CN114726042A - Early warning method for monitoring battery health by using charging curve and battery charging cabinet - Google Patents
Early warning method for monitoring battery health by using charging curve and battery charging cabinet Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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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
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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
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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
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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
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/63—Control systems
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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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
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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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Abstract
An early warning method for monitoring battery health by using a charging curve and a battery charging cabinet comprise the steps of obtaining charging parameters of a current charging grid, presetting a charging curve model, and identifying a target charging type according to charging current and/or charging voltage of the current charging grid; the charging curve model matches a corresponding standard charging curve and a deviation interval according to a target charging type, and loads charging parameters to generate a target charging curve; calculating a target set of the target charging curve exceeding the deviation interval; and calculating the target set by using the measurement indexes, and triggering early warning pushing and/or early warning actions of the battery charging cabinet. The invention collects the charging parameters of the battery charging in real time, sets the range deviation by matching with the corresponding standard charging parameters, and warns the charging parameters by a plurality of measurement indexes to acquire the health of the battery and warns the abnormal conditions which may occur during the charging of the battery, thereby effectively reducing the emergency of the battery during the charging and ensuring the charging safety of the battery.
Description
Technical Field
The invention relates to the field of battery charging cabinets of electric vehicles, in particular to an early warning method for monitoring battery health by using a charging curve and a battery charging cabinet.
Background
Along with the high-speed development of social economy, people's trip efficiency is higher and higher, and electric bicycle is the excellent instrument of people's short distance trip. However, the safety problem of charging nearly 3 hundred million electric bicycle users in the country is a problem to be solved urgently by management departments at all levels. In recent years, along with the popularization of electric bicycles, the electric bicycles have high fire hazard, high fire hazard spreading speed, high generated temperature, much toxic smoke and great harmfulness, hidden danger problems of public corridor parking charging, in-building flying line charging, resident home charging and the like mainly exist in daily use of residents, and casualties and property loss are easily caused once a fire hazard occurs, so public and safe charging solutions are urgently expected.
The charging cabinet is a new product which is centralized for charging digital products, and along with the continuous development and innovation of science and technology, more and more mobile electronic products have the characteristic of convenient movement. However, the storage battery and the storage battery are used for a long time, and the storage battery need to be charged for products such as electronic equipment frequently, so that the charging cabinet is convenient and practical. Electric vehicles represented by bicycles using storage batteries as power sources have a rapidly increasing number in the world, and great potential safety hazards are caused to places with dense stream of people such as urban traffic, shopping malls, group renting houses, dense residential areas, floor corridors, elevators and the like. In the real life, often there is the electric motor car to charge in the room and causes the report of conflagration, sets up the cabinet that charges specially in the district for concentrate the battery of electric motor car and charge, improved the security of each family.
At present, the problem of electric bicycle storage battery deposit and charge can be solved to the cabinet that charges, but, traditional cabinet that charges does not charge to the battery that charges the cabinet the inside and carries out temperature management and control and heat dissipation processing for the battery can receive ambient temperature or charger quality problem's influence in the charging process, leads to rechargeable battery's temperature to last to rise, not only can make rechargeable battery's life-span subtract the weak point, still can arouse potential safety hazards such as conflagration. In addition, in the conventional technical scheme, when the battery is charged at abnormal charging voltage or charging current, accelerated aging of the battery and abnormal charging of the battery are easily caused, an early warning scheme for charging the battery and health monitoring of the battery are lacked, the failure probability of the battery is increased, and even potential safety hazards such as fire and explosion can be caused during charging.
Disclosure of Invention
Aiming at the defects of early warning during the charging of the battery and health monitoring of the battery in the traditional technical scheme, the invention provides the early warning method for monitoring the health of the battery by using the charging curve and the battery charging cabinet.
In order to achieve the purpose, the invention adopts the following technical scheme: an early warning method for monitoring the health of a battery by using a charging curve comprises the following steps:
acquiring charging parameters of a current charging grid, wherein the charging parameters are charging current and/or charging voltage acquired by a monitoring unit during charging in the charging grid where a battery is located;
presetting a charging curve model, wherein the charging curve model comprises a plurality of standard charging curves of different types and a deviation interval based on the standard charging curves;
identifying a target charging type according to the charging current and/or the charging voltage of the current charging grid;
the charging curve model matches a corresponding standard charging curve and a deviation interval according to a target charging type, and loads the charging parameters to generate a target charging curve;
calculating a target set of the target charging curve exceeding the deviation interval;
and calculating the target set by using a measurement index so as to trigger early warning pushing and/or battery charging cabinet early warning actions when the target set exceeds the standard.
Preferably, the different types of standard charging curves include a charging voltage-charging time relation curve V when the normal battery is charged at a plurality of different rated current values respectively(t)，
And/or the curve I of the charging current versus the charging time when the normal battery is charged with different rated voltage values respectively(t)。
Preferably, the deviation interval is based on a plurality of charging voltage-charging time relation curves V(t)And/or the charging current versus the charging time curve I(t)And (4) presetting a deviation range, and establishing a corresponding relation between the preset deviation range and an object based on the preset deviation range.
Preferably, the matching of the target charging type with the corresponding standard charging curve and the deviation interval includes:
acquiring the charging current and/or charging voltage of the current charging grid;
matching a corresponding standard charging curve and a deviation interval establishing a corresponding relation with the standard charging curve according to the input parameters and the output parameters of the battery charging adaptation unit;
wherein the input parameters include at least one of: input voltage, input frequency, input current;
the output parameters include at least one of: output voltage, output current.
Preferably, the loading the charging parameters to generate the target charging curve comprises:
the charging current is related to the curve I in a time axis manner(t)Establishing a corresponding relation to generate a target charging current curve;
and/or establishing a corresponding relation between the charging voltage and the relation curve by a time axis to generate a target charging voltage curve.
Preferably, the early warning method further comprises:
acquiring a target set of which the target charging curve exceeds the deviation interval, wherein the target set comprises one or more early warning line segments or early warning nodes outside the deviation interval;
calculating the time period T between the beginning and the end of the early warning line segmentmAnd using a preset first metric T1Making a judgment on the time period TmWhether the first measurement index exceeds the standard or not is judged, and the first measurement index is a time value;
and/or calculating the time period T between adjacent early warning line segments and/or adjacent early warning nodesnAnd using a preset second metric T2Making a judgment on the time period TnWhether the standard exceeds the standard or not, wherein the second measurement index is a time value;
and when the standard exceeding result is judged according to the measurement index, triggering early warning pushing and/or early warning action of the battery charging cabinet.
Preferably, the early warning method further comprises:
acquiring the temperature of a battery which is being charged in a current charging grid, wherein the temperature of the battery is acquired by a temperature sensing unit of the charging grid in which the battery is located;
establishing a mapping relation according to the target charging curve by time to generate a target temperature curve;
the node of the target temperature curve satisfies a third metric T3Triggering early warning pushing and/or early warning actions of a battery charging cabinet, wherein the third measurement index is a temperature value;
when the first measurement index T is used1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnJudging whether the target temperature curve meets a fourth measurement index T or not when the superstandard is obtained4The fourth measurement index is a temperature value;
if the battery charging cabinet early warning action is met, triggering early warning pushing and executing the battery charging cabinet early warning action.
On the other hand, the invention also adopts the following technical scheme: a battery charging cabinet comprises a central cabinet body and charging grids arranged on two sides of the central cabinet body, wherein the central cabinet body is provided with a centralized power supply device and a control device, the charging grids are provided with power supply units and monitoring units, the centralized power supply device is electrically connected with the power supply units of a plurality of charging grids respectively, and the monitoring units are electrically connected with the control device;
the control device is configured to implement an early warning method for monitoring battery health using a charging profile as described above.
Preferably, the charging grid is provided with an air inlet and an air outlet, the air inlet is communicated with the outside, the air outlet is in butt joint with the central cabinet body, and the top of the central cabinet body is provided with an exhaust fan so that the charging grid forms air flow from the air inlet to the air outlet for heat dissipation;
at the time period TmGreater than the first metric T1When the battery health early warning information is sent to the user, the control device controls the battery charging cabinet communication unit to send the battery health early warning information to the user;
at the time period TnGreater than the second metric T2When the battery health early warning information is sent to the user, the control device controls the battery charging cabinet communication unit to send the battery health early warning information to the user;
when a certain node of the target temperature curve meets the third measurement index T3When the battery charging cabinet is used, the control device controls the exhaust fan to be started so that the charging grids and the central cabinet body form directional airflow to dissipate heat of the heating battery, and battery charging heating early warning information is pushed to a user through the battery charging cabinet communication unit.
Preferably, the control means is further arranged to be able to perform the steps of:
when the first measurement index T is used1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnJudging whether the target temperature curve is full or not when the superscript is obtainedFourth metric T4The fourth metric T4Greater than the third metric T3；
If the battery charging state is met, the control device controls the centralized power supply device to stop supplying power to the power supply unit of the charging grid where the battery is located, and battery charging abnormity early warning information is pushed to a user through the battery charging cabinet communication unit.
Preferably, the central cabinet body is further provided with a smoke sensor at the position of the exhaust fan, the smoke sensor is electrically connected with the control device, when smoke is generated in the battery of the charging grid body, the smoke is enabled to flow to the central cabinet body along with the air flow through the negative pressure provided by the exhaust fan and is discharged through the exhaust fan, the smoke triggers the smoke sensor, and the control device controls the centralized power supply device to stop supplying power to all the charging grid bodies.
Preferably, still have automatic fire extinguishing induction system in the grid that charges, automatic fire extinguishing induction system and controlling means electric connection, but automatic fire extinguishing induction system triggers the processing of putting out a fire automatically when appearing catching fire, and/or triggers the processing of putting out a fire by controlling means control.
Compared with the prior art, the invention has the following beneficial effects:
the invention collects the charging parameters of the battery charging in real time, sets the range deviation by matching with the corresponding standard charging parameters, and warns the charging parameters by a plurality of measurement indexes to acquire the health of the battery and warns the abnormal conditions which may occur during the charging of the battery, thereby effectively reducing the emergency of the battery during the charging and ensuring the charging safety of the battery.
The invention takes the charging current as a monitoring object, obtains the abnormal charging current information and screens the abnormal charging current information through the measurement indexes, effectively improves the accuracy of the abnormal charging of the battery, carries out early warning according to the abnormal charging information, carries out real-time monitoring on the charging condition of the battery, effectively screens the abnormal charging and fault trends of the battery, prevents the charging fault phenomenon which is about to occur in the battery, and further enhances the charging safety performance of the battery.
The battery charging cabinet not only can effectively warn the charging abnormity of the battery, but also has a corresponding processing means for the battery when the battery generates smoke and fires, and when the temperature of the battery exceeds a measurement index to indicate that the battery is charged and heated, the exhaust fan is controlled to be started by the control device to enable directional airflow for heat dissipation to be formed in the battery charging cabinet; when the battery generates smoke, the power supply of the centralized power supply device is cut off by the control device; when the battery catches fire, the control device controls the automatic fire extinguishing induction device or automatically triggers the automatic fire extinguishing induction device to extinguish the fire. The invention carries out temperature control, heat dissipation treatment and fault monitoring treatment on battery charging, and prevents battery faults or safety accidents which are about to occur when the battery is charged.
Drawings
In order to more clearly illustrate the technical solution, 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 that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the battery charging cabinet of the present invention.
Detailed Description
For a clear and complete understanding of the technical solutions, the present invention will now be further described with reference to the embodiments and the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, an early warning method for monitoring the health of a battery by using a charging curve includes the following steps:
s100, acquiring the charging current of the current charging grid, wherein the charging current is the charging current acquired by the monitoring unit during the charging period of the charging grid in which the battery is located.
S200, presetting a charging curve model, wherein the charging curve model comprises a plurality of standard charging curves of different types and deviation intervals based on the standard charging curves.
S210, the different types of standard charging curves comprise a relation curve V between charging voltage and charging time when a normal battery is charged at different rated current values respectively(t)And/or the charging current versus charging time curve I when the normal battery is charged with different rated voltage values respectively(t). The charging of the battery is conventionally divided into three stages, namely trickle charging, large-current charging and constant-voltage charging, when the electric quantity of the battery is very low, the battery is low in voltage, and small-current charging, namely trickle charging, is adopted, if the battery voltage is not low when the charging is started, the trickle charging process is not needed, and the small-current charging is used for protecting the battery and avoiding the damage of the large-current impact on the internal structure of the battery; if the voltage of the battery is not low, large-current charging can be started, namely, the allowed maximum current is used for charging, so that the charging time is saved, the maximum current is used for charging, and the voltage of the battery is gradually increased along with the charging; when the battery voltage reaches or approaches to the full charge voltage, the constant voltage charging is started, because the full charge voltage is reached, the voltage can be kept basically unchanged, and the charging current is gradually reduced, namely the constant voltage charging. Said relation curve I(t)The charging current and the charging time of the normal battery in the large-current charging stage are completely related.
S220, the deviation interval is based on a plurality of relation curves V of charging voltage and charging time(t)And/or the charging current vs. charging time curve I(t)And (4) presetting a deviation range, and establishing a corresponding relation between the preset deviation range and an object based on the preset deviation range.
S300, identifying a target charging type according to the charging current and/or the charging voltage of the current charging grid, wherein the step of matching the target charging type with the corresponding standard charging curve and the deviation interval comprises the following steps: acquiring the charging current and/or charging voltage of the current charging grid; and matching the corresponding standard charging curve and the deviation interval establishing the corresponding relation with the standard charging curve according to the input voltage, the input frequency, the input current, the output voltage and the output current of the battery charging adaptive unit.
S400, matching the corresponding relation curve I of the charging current and the charging time by the charging curve model according to the target charging type(t)And matching the relation curve I(t)The deviation interval is preset according to the corresponding relation curve;
s500, loading charging parameters to generate a target charging curve; the charging current is related to the curve I in a time axis manner(t)And establishing a corresponding relation to generate a target charging current curve. The embodiment is carried out according to the battery capacity and the electric quantity and/or the battery voltage during charging and the relation curve I(t)Establishing a corresponding relation, starting to generate a target charging current curve when the battery enters a large-current charging stage during access charging, wherein the target charging current curve is connected with the relation curve I by a time axis according to the battery capacity, the electric quantity and/or the battery voltage(t)Establishing a corresponding relation to determine that the starting point of the target charging current curve is located on the relation curve I(t)The specific time location of (a).
S600, calculating a target set of the target charging curve beyond the deviation interval.
S610, acquiring a target set of which the target charging current curve exceeds the deviation interval, wherein the target set comprises one or more early warning line segments or early warning nodes outside the deviation interval, the early warning line segments are formed by charging current values of a plurality of continuous time nodes exceeding a preset deviation interval when a battery is charged, the early warning nodes are formed by charging current values of one time node exceeding the deviation interval when the battery is charged, and the charging current value of the next time node is located in the deviation interval;
s620, calculating the time period T between the beginning and the end of the early warning line segmentmWhen the charging current values of a plurality of continuous time nodes exceed a preset deviation interval, calculating the plurality of continuous time nodesThe time length of the node and the time length of the charging current value exceeding the deviation interval, such as the charging time of continuous 10mn, all charge the battery with larger current exceeding the deviation interval based on the standard value;
s630, calculating the time period T between adjacent early warning line segments and/or adjacent early warning nodesnWhen a live early warning node of an early warning line segment appears and the time of 2 adjacent early warning line segments and the early warning node is shorter, if the next early warning line segment starts again 0.5min after the previous early warning line segment ends, the time length of the adjacent early warning line segments in the deviation interval can be ignored; or a plurality of early warning nodes appear, and the condition that the battery reaches the early warning condition can be indicated by too short time between the early warning nodes.
S700, calculating the target set by using a measurement index so as to trigger early warning pushing and/or early warning actions of a battery charging cabinet when the target set exceeds the standard.
S710, using a preset first metric T1Making a judgment on the time period TmWhether the first measurement index T exceeds the standard or not1Is a time value, such as 5min, 10min, etc.;
s711, during the time period TmGreater than the first metric T1And when the battery is in a sub-health state, early warning pushing is triggered, and battery sub-health early warning information is pushed to a user through the battery charging cabinet communication unit.
S720, using the preset second measurement index T2Making a judgment on the time period TnWhether the standard exceeds the standard or not, wherein the second measurement index is a time value, such as 1min, 2min and the like;
s721, during the time period TnGreater than the second metric T2And when the battery is in a sub-health state, early warning pushing is triggered, and battery sub-health early warning information is pushed to a user through the battery charging cabinet communication unit.
The second embodiment:
as shown in fig. 2, a method for early warning of battery health using a charging curve, the method further includes:
and S800, acquiring the temperature of the battery which is being charged in the current charging grid, wherein the temperature of the battery is acquired by the temperature sensing unit of the charging grid in which the battery is located.
And S810, establishing a mapping relation according to the target charging curve by time to generate a target temperature curve, and establishing a corresponding mapping relation between the target charging curve and the target temperature curve by a time node.
S820, the node of the target temperature curve meets a third metric T3Triggering early warning pushing and/or early warning action of a battery charging cabinet, and measuring the third measurement index T3The temperature values, such as 40 ℃ and 50 ℃, indicate that the battery has serious heat generation during the charging process.
S821, when the temperature value of a certain time node in the target temperature curve exceeds the third measurement index T3When the set temperature value is reached, the battery is heated in the charging process, and early warning pushing and early warning actions of a battery charging cabinet are triggered;
s822, pushing early warning information of heating of the battery during charging to a user;
s823, the battery charging cabinet starts the heat dissipation early warning action, and the exhaust fan is controlled to start through the control device of the battery charging cabinet, so that directional airflow is formed in the battery charging cabinet to perform heat dissipation treatment on the battery.
S830, on the basis of the first embodiment, when the first metric T is1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnJudging whether the target temperature curve meets a fourth measurement index T or not when the superstandard is obtained4The fourth metric T4The fourth measure T is a temperature value, such as 55 deg.C, 60 deg.C, etc4Greater than the third metric T3；
S831, if yes, the battery is heated in the charging process and is charged by abnormal input current, the temperature of the battery is continuously rising, early warning pushing is triggered, and early warning action of the battery charging cabinet is executed;
s832, pushing battery charging abnormity early warning information that the battery generates heat and the temperature of the battery has a rising trend during charging to a user;
and S833, the battery charging cabinet controls the centralized power supply device through the control device to stop supplying power to the power supply unit of the charging grid where the heating battery is located. As another technical solution in this embodiment, when the temperature of the battery being charged in the charging grid is continuously increased and reaches the fourth metric T4In the meantime, even if the battery is charged with a normal charging current, the battery charging cabinet performs an early warning action to cut off power supply, thereby improving safety.
The third embodiment is as follows:
as shown in fig. 3, a battery charging cabinet includes a central cabinet body 10 and a charging grid 20 disposed on two sides of the central cabinet body 10, the central cabinet body 10 is provided with a centralized power supply device and a control device, the charging grid 20 is provided with a power supply unit and a monitoring unit, the centralized power supply device is respectively connected with a plurality of power supply units of the charging grid 20, the monitoring unit is electrically connected with the control device, the monitoring unit includes a sampling circuit for monitoring current or voltage of a battery when charging, and a temperature sensor for acquiring real-time temperature of the battery when charging.
The grid that charges has air intake and air outlet, the air intake is located the back of the grid that charges and is just communicate with the outside, the air outlet with the gaseous circulation of the grid and the central cabinet body of charging so that the central cabinet body dock, the top of the central cabinet body is equipped with air exhauster 30 so that the grid that charges forms the air current from air intake to air outlet for the heat dissipation.
The central cabinet body is located air exhauster department and still is equipped with smoke transducer, smoke transducer and controlling means electric connection, when the battery of the grid that charges takes place to smoke, the negative pressure that provides through the air exhauster makes the flue gas follow the air current from the grid that charges flow to the central cabinet body and discharge through the air exhauster, and the flue gas triggers smoke transducer, controlling means control is concentrated power supply unit and is stopped the power supply to all grids that charge.
Still have automatic fire extinguishing induction system in the grid that charges, automatic fire extinguishing induction system and controlling means electric connection, but automatic fire extinguishing induction system triggers the processing of putting out a fire automatically when appearing catching fire, and/or triggers the processing of putting out a fire by controlling means control.
The control device is configured to implement an early warning method for monitoring battery health using a charging profile that implements either embodiment one or embodiment two.
Triggering early warning pushing and early warning actions of the battery charging cabinet comprise:
s910, during the time period TmGreater than the first metric T1Time and/or time period TnGreater than the second metric T2When the battery health early warning information is sent to the user, the control device controls the battery charging cabinet communication unit to send the battery health early warning information to the user;
s920, when the battery temperature represented by a certain time node of the target temperature curve meets a third measurement index T3When the battery charging cabinet is used, the control device controls the exhaust fan to be started so that the charging grids and the central cabinet body form directional airflow to dissipate heat of the heating battery, and the battery charging cabinet communication unit pushes battery charging heating early warning information to a user.
S930, when the first measurement index T is used1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnJudging whether the target temperature curve meets a fourth measurement index T or not when the superstandard is obtained4(ii) a If the battery charging state is met, the control device controls the centralized power supply device to stop supplying power to the power supply unit of the charging grid where the battery is located, and battery charging abnormity early warning information is pushed to a user through the battery charging cabinet communication unit. As another technical solution in this embodiment, when the temperature of the battery being charged in the charging grid is continuously increased and reaches the fourth metric T4In the meantime, even if the battery is charged with a normal charging current, the battery charging cabinet performs an early warning action to cut off power supply, thereby improving safety.
S940, when the battery smokes, the temperature of the smoking battery is usually in a state of being capable of triggering the heat dissipation treatment of the battery charging cabinet, smoke is sensed by the smoke sensor when being discharged outwards through the exhaust fan, the power failure early warning action of the battery charging cabinet is triggered, the control device controls the centralized power supply device to stop supplying power to all charging grids, charging fault early warning information of the battery cabinet where the battery is located is pushed to a user, and meanwhile fault information is pushed to the management end to be processed in time.
S950, when the battery catches fire, the battery charging cabinet can acquire the temperature exceeding condition through the control device, such as setting a fifth measurement index T5At 80 ℃, when the temperature of the battery reaches the standard, the control device triggers the automatic fire extinguishing induction device to extinguish the fire. The automatic fire extinguishing induction device can also automatically trigger fire extinguishing treatment by burning flame to the induction device.
The above disclosure is intended only to illustrate one or more preferred embodiments of the present invention and not to limit the invention in any way, which is intended to be encompassed by the present invention.
Claims (10)
1. An early warning method for monitoring the health of a battery by using a charging curve is characterized by comprising the following steps:
acquiring charging parameters of a current charging grid, wherein the charging parameters are charging current and/or charging voltage acquired by a monitoring unit during charging in the charging grid where a battery is located;
presetting a charging curve model, wherein the charging curve model comprises a plurality of standard charging curves of different types and a deviation interval based on the standard charging curves;
identifying a target charging type according to the charging current and/or the charging voltage of the current charging grid;
the charging curve model matches a corresponding standard charging curve and a deviation interval according to a target charging type, and loads the charging parameters to generate a target charging curve;
calculating a target set of the target charging curve exceeding the deviation interval;
and calculating the target set by using a measurement index so as to trigger early warning pushing and/or battery charging cabinet early warning actions when the target set exceeds the standard.
2. The warning method for monitoring the health of a battery according to claim 1, wherein the warning method comprises the following steps: the different types of standard charging curves comprise a relation curve V between charging voltage and charging time when a normal battery is respectively charged at a plurality of different rated current values(t)，
And/or the curve I of the charging current versus the charging time when the normal battery is charged with different rated voltage values respectively(t)。
3. The warning method for monitoring the health of a battery according to claim 2, wherein the warning method comprises the following steps: the deviation interval is based on a plurality of relation curves V of charging voltage and charging time(t)And/or the charging current versus the charging time curve I(t)And (4) presetting a deviation range, and establishing a corresponding relation between the preset deviation range and an object based on the preset deviation range.
4. The warning method for monitoring the health of a battery according to claim 1, wherein the matching of the target charging type with the corresponding standard charging curve and the deviation interval comprises:
acquiring the charging current and/or charging voltage of the current charging grid;
matching a corresponding standard charging curve and a deviation interval establishing a corresponding relation with the standard charging curve according to the input parameters and the output parameters of the battery charging adaptation unit;
wherein the input parameters include at least one of: input voltage, input frequency, input current;
the output parameters include at least one of: output voltage, output current.
5. The warning method for monitoring the health of a battery according to claim 1, wherein the loading the charging parameters to generate the target charging curve comprises:
the charging current is related to the curve I in a time axis manner(t)Establishing a corresponding relation to generate a target charging current curve;
and/or establishing a corresponding relation between the charging voltage and the relation curve by a time axis to generate a target charging voltage curve.
6. The warning method for monitoring the health of a battery according to claim 1, further comprising:
acquiring a target set of which the target charging curve exceeds the deviation interval, wherein the target set comprises one or more early warning line segments or early warning nodes outside the deviation interval;
calculating the time period T between the beginning and the end of the early warning line segmentmAnd using a preset first metric T1Making a judgment on the time period TmWhether the first measurement index exceeds the standard or not is judged, and the first measurement index is a time value;
and/or calculating the time period T between adjacent early warning line segments and/or adjacent early warning nodesnAnd using a preset second metric T2Making a judgment on the time period TnWhether the standard exceeds the standard or not, wherein the second measurement index is a time value;
and when the standard exceeding result is judged according to the measurement index, triggering early warning pushing and/or early warning action of the battery charging cabinet.
7. The warning method for monitoring the health of a battery according to claim 6, further comprising:
acquiring the temperature of a battery which is being charged in a current charging grid, wherein the temperature of the battery is acquired by a temperature sensing unit of the charging grid in which the battery is located;
establishing a mapping relation according to the target charging curve by time to generate a target temperature curve;
the node of the target temperature curve satisfies a third metric T3Time-triggered early warning deviceSending and/or early warning actions of the battery charging cabinet, wherein the third measurement index is a temperature value;
when the first measurement index T is used1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnJudging whether the target temperature curve meets a fourth measurement index T or not when the superstandard is obtained4The fourth measurement index is a temperature value;
if the battery charging cabinet early warning action is met, triggering early warning pushing and executing the battery charging cabinet early warning action.
8. A battery charging cabinet which characterized in that: the intelligent charging cabinet comprises a central cabinet body and charging grids arranged on two sides of the central cabinet body, wherein the central cabinet body is provided with a centralized power supply device and a control device, the charging grids are provided with a power supply unit and a monitoring unit, the centralized power supply device is respectively and electrically connected with the power supply units of the charging grids, and the monitoring unit is electrically connected with the control device;
the control device is arranged to implement a pre-warning method for monitoring the health of a battery using a charging profile as claimed in any one of claims 1 to 7.
9. A battery charging cabinet according to claim 8, wherein: the charging grid body is provided with an air inlet and an air outlet, the air inlet is communicated with the outside, the air outlet is in butt joint with the central cabinet body, and the top of the central cabinet body is provided with an exhaust fan so that the charging grid body forms airflow from the air inlet to the air outlet for heat dissipation;
at the time period TmGreater than the first metric T1When the battery health early warning information is sent to the user, the control device controls the battery charging cabinet communication unit to send the battery health early warning information to the user;
at the time period TnGreater than the second metric T2When the battery health early warning information is sent to the user, the control device controls the battery charging cabinet communication unit to send the battery health early warning information to the user;
when a certain node of the target temperature curve meets the third measurement index T3When the control device controls theThe exhaust fan starts so that the charging grid body and the central cabinet body form directional airflow to dissipate heat of the heating battery, and battery charging heating early warning information is pushed to a user through the battery charging cabinet communication unit.
10. A battery charging cabinet according to claim 9, wherein: the control device is further arranged to be able to perform the steps of:
when the first measurement index T is used1Or a second metric T2Respectively corresponding to the judgment time periods TmOr time period TnWhen the over-standard is obtained, whether the target temperature curve meets a fourth measurement index T or not is judged4The fourth metric T4Greater than the third metric T3；
If the battery charging state is met, the control device controls the centralized power supply device to stop supplying power to the power supply unit of the charging grid where the battery is located, and battery charging abnormity early warning information is pushed to a user through the battery charging cabinet communication unit.
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