CN112462280A - Battery formation and capacity grading system - Google Patents
Battery formation and capacity grading system Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims abstract description 59
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- 238000012360 testing method Methods 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 25
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- 238000010277 constant-current charging Methods 0.000 description 6
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- BNPSSFBOAGDEEL-UHFFFAOYSA-N albuterol sulfate Chemical compound OS(O)(=O)=O.CC(C)(C)NCC(O)C1=CC=C(O)C(CO)=C1.CC(C)(C)NCC(O)C1=CC=C(O)C(CO)=C1 BNPSSFBOAGDEEL-UHFFFAOYSA-N 0.000 description 1
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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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
- H01M10/446—Initial charging measures
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a battery formation and capacity grading system, which comprises: the system comprises an upper computer system, a middle computer system and a lower computer system, wherein the three systems are connected in a ring type manner; the system comprises a central computer system, a capacity grading cabinet, a monitoring system and a warning system, wherein the central computer system is used for monitoring the capacity grading cabinet of the battery and the environment where the capacity grading cabinet is located, and sending warning information to the upper computer system when abnormality occurs; the lower computer system is used for executing a control instruction from the upper computer system to control the battery capacity grading cabinet, collecting state information of batteries in the battery capacity grading cabinet and uploading the state information to the upper computer system; and the upper computer system is used for carrying out data processing on the state information acquired by the lower computer system and the alarm information sent by the middle computer system and sending a control instruction according to a processing result. The system has the characteristics of high precision, high safety performance, strong reliability and simple and convenient operation.
Description
Technical Field
The invention relates to the field of new energy, in particular to a battery formation and capacity grading system.
Background
The lithium battery has high energy density, high voltage, high cycle, high safety, long cycle life, environment friendship and other excellent performance, and is used widely in electronic product and other fields. The battery component grading system is one of key devices in the battery grouping process and is directly related to the quality and the yield of the battery.
At present, most of battery formation and capacity grading systems in China are developed before 2005, the number of batteries formed in one time is small, the stability and the reliability are poor, the system cannot adapt to formation of batteries with multiple parameters and multiple specifications, and the system is not beneficial to battery capacity grading treatment. And the foreign advanced equipment is expensive and high in maintenance cost.
In terms of reliability, overcharge and overdischarge of the battery can cause life loss or explosion, resulting in significant loss. Therefore, real-time effective control of parameters such as voltage, current, temperature and the like is the primary requirement of system reliability.
In the aspect of control transmission structures, the current battery formation and capacity grading system mostly adopts an upper computer/lower computer and an upper computer/middle computer/lower computer progressive transmission structure, and the single-wire connection mode and the chip performance limit the data transmission speed to a certain extent.
Disclosure of Invention
The invention provides a battery formation and grading system, which aims to solve the problem that the existing battery formation and grading system cannot meet the existing requirements in the aspects of automation degree, reliability, stability, detection precision, transmission rate, safety alarm processing and the like.
According to a first aspect of the present invention, there is provided a battery chemical composition and capacity system comprising:
the system comprises an upper computer system, a middle computer system and a lower computer system, wherein the upper computer system, the middle computer system and the lower computer system are connected in an annular mode; wherein,
the central computer system is used for monitoring the battery capacity grading cabinet and the environment where the battery capacity grading cabinet is located, and sending alarm information to the upper computer system when an abnormality occurs;
the lower computer system is used for executing a control instruction from the upper computer system to control the battery capacity grading cabinet, collecting state information of batteries in the battery capacity grading cabinet and uploading the state information to the upper computer system;
and the upper computer system is used for carrying out data processing on the state information acquired by the lower computer system and the alarm information sent by the middle computer system and sending a control instruction according to a processing result.
Optionally, the upper computer system, the middle computer system and the lower computer system communicate through a CAN bus.
Optionally, the lower computer system includes: the device comprises a main control module, a charge-discharge module, a data acquisition module, a communication module, a switch control module, an overload overcurrent protection module, a power supply module and a display module;
the main control module is used for controlling the corresponding module to work according to the control instruction;
the data acquisition module is used for acquiring the state information of the single batteries in the battery capacity grading cabinet;
the charge and discharge module is used for charging and discharging the single battery;
the switch control module is used for starting or closing the charging and discharging process of the charging and discharging module under the control of the main control module;
the communication module is used for receiving the control instruction and sending the state information to the upper computer system;
the power supply module is used for supplying power to other modules of the lower computer system;
the display module is used for displaying the current, the voltage, the temperature, the capacity grading process and the selection mode of the single battery;
the overload overcurrent protection module is used for carrying out overload protection when the battery capacity grading cabinet exceeds rated load current and carrying out overcurrent protection when circuit current is overlarge.
Optionally, the data acquisition module includes:
the voltage and current sampling devices are respectively used for acquiring voltage and current data of the single battery;
and the temperature sensor is used for acquiring temperature change data of the single battery in the charging and discharging process.
Optionally, the central computer system comprises a power supply monitoring control module, a temperature monitoring control module and/or a fire fighting monitoring control module;
the power supply monitoring control module is used for monitoring a public power supply and uploading a monitoring result to the upper computer system;
the temperature monitoring control module is used for monitoring the temperature in the battery capacity grading cabinet and uploading the monitoring result to the upper computer system;
the fire-fighting monitoring control module is used for monitoring smoke and fire in the battery capacity grading cabinet and uploading a monitoring result to the upper computer system.
Optionally, when the power monitoring and control module monitors the public power, if the voltage exceeds a first preset range, the power monitoring and control module sends a voltage abnormality warning to the upper computer system;
when the temperature monitoring control module monitors the temperature in the battery capacity grading cabinet, if the temperature exceeds a second preset range, sending a temperature abnormity warning to the upper computer system;
the fire-fighting monitoring control module monitors smoke and fire in the battery capacity-sharing cabinet through a smoke sensor and a thermal sensing camera, and if the fire is monitored, the fire-fighting monitoring control module controls the dry-chemical fire extinguisher to be started and sends a fire report to the upper computer system.
Optionally, the upper computer system includes: the device comprises a user login module, a detection scheme selection module, a calibration initialization module, an interface display module, an alarm module, a data management module and a precision coefficient adjustment module; wherein,
the user login module is used for managing information of a user and executing login operation;
the detection scheme selection module is used for providing a detection scheme for a user to select;
the calibration initialization module is used for initializing initial parameters for performing calibration test on the battery capacity grading cabinet;
the interface display module is used for managing and displaying information of the upper computer system, the middle computer system and the lower computer system;
the alarm module is used for processing alarm information from the middle position machine system;
the data management module is used for executing data management of state information acquired by the lower computer system and alarm information sent by the middle computer system;
and the precision coefficient adjusting module is used for debugging the voltage precision and the current precision of the voltage and current sampling device.
Optionally, the initialization content of the calibration initialization module includes: the method comprises the steps of automatically running a calibration test process, testing the functions of the CC and the CV of the battery capacity grading cabinet, calibrating the standard voltage and the standard current of the battery capacity grading cabinet, switching and calibrating the working mode of the battery capacity grading cabinet, calibrating a display screen of an interface display module, automatically detecting an alarm module, automatically detecting a communication system and initializing software of a central computer system and a lower computer system.
Optionally, the data management module includes: the battery parameter input module is used for inputting the information of the single batteries in the battery capacity grading cabinet, and the information of the single batteries comprises: manufacturer information, battery production process, capacity grading flow and reports.
Optionally, the data management module includes:
the data query module is used for querying a test result of the battery through keywords and displaying the test result to a user in an Access or Excel format, wherein the keywords comprise: a user name, a file name, a test date, a battery number and a grading cabinet number; and/or
The test report printing module is used for arranging the test results into the test reports to be output and printed, and the test results comprise: the method comprises the following steps of numbering a grading cabinet, testing date, battery type, battery qualification rate, single battery current, a grading cabinet temperature trend curve, alarm type and times and a voltage trend curve.
The battery formation and capacity grading system provided by the invention has the following beneficial effects:
the system mainly executes the instruction sent by the upper computer through the lower computer to realize the control of the battery capacity grading cabinet; carrying out data processing and giving risk assessment through an upper computer system, and controlling dangerous factors such as overcurrent and overvoltage; the central computer detects the temperature, smoke and fire of the public power supply and the capacity grading cabinet, so that the safety level of the capacity grading cabinet is improved. The system has the advantages of high precision, high safety performance, high transmission rate and simple and convenient operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the communication process of the system of the present invention;
fig. 3 is a schematic diagram of the system components of the lower computer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a system of the middle position machine according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the upper computer system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a work flow of the upper computer system in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
As shown in fig. 1, the present embodiment provides a battery chemical composition and capacity system, including: an upper computer system 10, a middle computer system 20 and a lower computer system 30. The upper computer system 10, the middle computer system 20, and the lower computer system 30 in this embodiment are connected in a ring type. The middle computer system 20 is used for monitoring the battery capacity grading cabinet and the environment, and sending alarm information to the upper computer system 10 when an abnormality occurs; the lower computer system 30 is used for executing a control instruction from the upper computer system 10 to control the battery capacity grading cabinet, collecting state information of batteries in the battery capacity grading cabinet and uploading the state information to the upper computer system 10; the upper computer system 10 is configured to perform data processing on the state information collected by the lower computer system 30 and the alarm information sent by the middle computer system 20, and send a control instruction according to a processing result.
Further, as shown in fig. 2, the upper computer system 10, the middle computer system 20, and the lower computer system 30 in the present embodiment communicate with each other through the CAN bus. Data streams and instructions among the upper computer system 10, the middle computer system 20 and the lower computer system 30 are transmitted through the CAN bus.
Further, as shown in fig. 3, the lower computer system 30 in the present embodiment includes: the device comprises a main control module 31, a charging and discharging module 32, a data acquisition module 33, a communication module 34, a switch control module 35, an overload overcurrent protection module 36, a power supply module 37 and a display module 38; the main control module 31 is configured to control the corresponding module to work according to a control instruction of the upper computer system 10; the charge and discharge module 32 is used for charging and discharging the single battery; the data acquisition module 33 is used for acquiring the state information of the single batteries in the battery capacity grading cabinet; the communication module 34 is used for receiving a control instruction from the upper computer system 10 and sending the acquired state information of the single batteries in the battery capacity grading cabinet to the upper computer system 10; the switch control module 35 is used for turning on or off the charging and discharging process of the charging and discharging module under the control of the main control module 31; the overload and overcurrent protection module 36 is used for performing overload protection when the battery capacity grading cabinet exceeds the rated load current and performing overcurrent protection when the circuit current of the battery capacity grading cabinet is overlarge. The power module 37 is used to supply power to other modules in the lower computer system 30; the display module 38 is used for displaying the current, voltage, temperature, capacity grading process and selection mode of each single battery in the battery capacity grading cabinet. The lower computer system 30 realizes the control of the battery capacity grading cabinet, the acquisition of the voltage, the current and the temperature of the single battery and the control of dangerous factors such as overcurrent and overvoltage through the matching of the modules.
Further, the main control module 31 in this embodiment includes an MCU, a crystal oscillator circuit, and a reset circuit. The MCU is a control center of the whole hardware, and when receiving an instruction, the MCU controls the corresponding module to work. The crystal oscillator circuit is a clock generating system of the whole single chip microcomputer, and the reset circuit is used for restarting the whole circuit.
The charging and discharging module 32 in this embodiment further includes a charging circuit and a discharging circuit. The charging circuit and the discharging circuit are respectively connected in series or in parallel with the battery pack of the battery capacity grading cabinet and controlled by the MCU of the main control module 31 to charge and discharge the battery monomer.
The data acquisition module 33 in this embodiment further includes: voltage and current sampling devices, temperature sensors and anti-interference circuits. The voltage and current sampling devices are respectively used for acquiring voltage and current data of the single battery; the temperature sensor is used for acquiring temperature change data of the single battery in the charging and discharging process. The anti-interference circuit comprises an RC filter circuit and a pull-up resistor, and EMI can be reduced. After voltage and current collection is completed, the main control module 31 calculates the capacity of the battery through the formula (1), and completes calibration of the battery capacity. The formula (1) is as follows,
Q＝C·T (1)
where Q is the capacity of the battery, C is the discharge current, and T is the discharge time.
The communication module 34 in this embodiment further includes: CAN transceiver and filter circuit. Wherein the CAN transceiver communicates with the entire field CAN control bus via CAN-H, CAN-L. The filter circuit in this embodiment is composed of two capacitors and a bidirectional diode, and functions to stabilize signals.
The switch control module 35 in this embodiment further includes: a switching circuit. The switch circuit is controlled by the MCU of the main control module to start or stop the charge and discharge of the whole single battery.
In the overload overcurrent protection module 36 in this embodiment, overcurrent protection is to prevent the circuit current from being too large and damaging electrical components; overload protection is a mode of protection that is taken to prevent the grading cabinet from exceeding the rated load current.
The power module 37 in this embodiment contains the voltage levels required by each module to ensure the normal operation of each module.
The display module 38 in this embodiment includes a display screen and a peripheral circuit, and information such as current, voltage, temperature, capacity grading progress, and selected mode of the single battery can be observed through the display screen.
The middle computer system in the embodiment is an information interaction platform of an upper computer and a lower computer, and comprises a plurality of functional modules so as to reduce the workload of the lower computer. Referring to fig. 4, the mid-station system 20 in the present embodiment includes a power monitoring control module 21, a temperature monitoring control module 22, and/or a fire monitoring control module 23; the power supply monitoring control module 21 is used for monitoring a public power supply and uploading a monitoring result to the upper computer system 10; the temperature monitoring control module 22 is used for monitoring the temperature in the battery capacity grading cabinet and uploading the monitoring result to the upper computer system 10; the fire monitoring control module 23 is used for monitoring smoke and fire in the battery capacity grading cabinet and uploading the monitoring result to the upper computer system 10. The central computer system 20 improves the safety level of the grading cabinet by detecting the public power supply, the temperature of the grading cabinet, the smoke and the fire.
Further, the power monitoring control module 21 in this embodiment includes a voltage sampling module, and when the voltage sampling module monitors the common power, if the voltage of the common power exceeds a first preset range, the voltage sampling module sends a voltage abnormality warning to the upper computer system 10 through the CAN bus. The content of the voltage abnormality warning corresponding to the first preset range includes: and voltage ranges corresponding to abnormal conditions such as overvoltage, undervoltage, power failure, fuse blow and the like.
The temperature monitoring control module 22 comprises a temperature sensor, an alarm and a cooling system. When the temperature monitoring control module 22 monitors the temperature in the battery capacity grading cabinet, if the temperature exceeds a second preset range, the temperature monitoring control module sends a temperature abnormity warning to the upper computer system. Meanwhile, the temperature in the cabinet is ensured to be within a constant range by monitoring and controlling the cooling system in the cabinet, and the efficiency of the grading cabinet is improved.
Specifically, in this embodiment, the different temperature ranges detected by the temperature sensor and the measures taken are as follows: t is0The ventilator is started to be in a low gear at the temperature of less than 30 ℃; t is not less than 30 DEG C0The temperature is less than or equal to 35 ℃, and the ventilation fan is started to be in the middle gear; t at 35 ℃%0The temperature is less than or equal to 40 ℃, and the ventilation fan is started to be high-grade; t is0And (6) starting the cooling fan when the temperature is higher than 40 ℃. When the cooling fan is started to cool for a certain time and the temperature in the partial volume cabinet is still unchanged, the alarm is started and transmits a temperature alarm signal to the upper computer through the CAN busAnd (4) information.
The fire monitoring control module 23 comprises a smoke sensor, a thermal sensing camera, a dry powder fire extinguisher and an alarm. The fire monitoring control module 23 monitors smoke and fire in the battery compartment through the smoke sensor and the thermal sensing camera, and if the fire is monitored, the fire monitoring control module controls to start the dry powder fire extinguisher and sends a fire report to the upper computer system 10. Specifically, the upper computer system 10 controls the middle computer system 20 to take different measures according to the received smoke concentration data: when the concentration is low, smoke alarm information is sent to the upper computer system 10 through the CAN bus; when the concentration is very high, the picture is processed through the thermal image of the thermal induction camera, the ignition point is found through comparison with a normal picture, and the dry powder fire extinguisher is directly started to aim at the root of the fire source to extinguish fire.
As shown in fig. 5, the upper computer system 10 provided in the present embodiment includes: the device comprises a user login module 11, a detection scheme selection module 12, a calibration initialization module 13, an interface display module 14, an alarm module 15, a data management module 16 and an accuracy coefficient adjustment module 17. The user login module 11 is used for managing information of a user and executing login operation; the detection scheme selection module 12 is used for providing a detection scheme for selection by a user; the calibration initialization module 13 is used for initializing initial parameters for performing calibration test on the battery capacity grading cabinet; the interface display module 14 is used for managing and displaying information of the upper computer system, the middle computer system and the lower computer system; the alarm module 15 is used for processing alarm information from the middle position machine system; the data management module 16 is configured to perform data management on the state information collected by the lower computer system 30 and the alarm information sent by the middle computer system 20; the precision coefficient adjusting module 17 is used for debugging the voltage precision and the current precision of the voltage and current sampling device of the data acquisition module 33.
Referring to fig. 6, when the upper computer system 10 works, firstly, a user logs in a login interface through the user login module 11, and then, a logged-in user selects a detection scheme through the detection scheme selection module 12; after selection, the calibration initialization module 13 judges whether to calibrate, if so, the calibration is carried out and a test link is entered, and if not, the detection scheme selection is returned to continue.
The upper computer in the embodiment adopts C + + and MATLAB mixed programming, and data fitting of the charge-discharge curve is realized when data are processed. Specifically, the user login module 11 includes functions of user login, user name addition, user password modification, and user language selection, and provides security for the detection system. The detection scheme selection module 12 is used for setting and selecting CC (Constant current charging), CV (Constant voltage charging), standing time, cycle number, battery type and the like, and can reduce test accidents and improve test precision by selecting a proper scheme. The voltage and current levels, rest time and cycle number of the CC and CV are selected according to the battery type and standard. Further, the above-mentioned battery types include pouch batteries, cylindrical batteries, prismatic batteries, button batteries, and the like.
The initialization content of the calibration initialization module 13 in this embodiment includes: the method comprises the following functions of automatic operation in a calibration test process, CC and CV function test of the battery capacity grading cabinet, calibration of standard voltage and standard current of the battery capacity grading cabinet, switching calibration of the working mode of the battery capacity grading cabinet, calibration of a display screen of an interface display module, automatic detection of an alarm module, automatic detection of a communication system, software initialization of a central computer system and a lower computer system and the like.
The precision coefficient adjusting module 17 in this embodiment includes voltage precision debugging and current precision debugging. In a current and voltage control conversion unit, theoretically, a sampling value and a sampled actual voltage current value are in a fixed linear relation, but due to the influence of parameters of electronic components, the linearity is poor, so that a measured value and an actual value have large deviation, and precision debugging needs to be performed on a system sampling unit.
The CC and CV functional tests of the grading cabinet in this embodiment can be determined after the selection of the test scheme, and are illustrated by the grading step and standard of the battery capacity 3700 mAh. Referring to table 1:
TABLE 1 Capacity grading procedure and Standard for batteries with capacities less than or equal to 3700mAh
In this embodiment, the interface display module 14 includes a function button, a mode selection, a battery charging/discharging simulation diagram, a single battery current, a voltage curve trend diagram, an alarm display interface, and the like.
The alarm module 15 in the embodiment has the functions of public power supply abnormity alarm, temperature alarm and fire alarm, and all alarm information is transmitted to the upper computer by the middle computer through the CAN bus, so that the safety performance of the whole system is improved, and the probability of accidents is reduced.
The data management module 16 in this embodiment includes: the battery parameter entry module is used for entering the information of the single batteries in the battery capacity grading cabinet, and the information of the single batteries comprises: manufacturer information, battery production process, capacity grading flow and reports. In this embodiment, battery parameter input module enters the information of battery cell through scanning the battery two-dimensional code, and this information can be updated in real time to the trouble can acquire battery cell information through scanning the battery two-dimensional code in the use in the future, help the staff in time find out the trouble source. In other preferred embodiments, the information of the battery cell may also be recorded by scanning a barcode, a radio frequency coil, or the like, which is not limited specifically herein
In this embodiment, the data management module further includes: the data query module is used for querying the test result of the battery through keywords and displaying the test result to a user in an Access or Excel format, wherein the keywords comprise: user name, file name, test date, battery number, bin number, etc.
In this embodiment, the data management module further includes: the test report printing module is used for arranging the test results into the test reports to be output and printed, wherein the test results comprise: the method comprises the following steps of numbering a grading cabinet, testing date, battery type, battery qualification rate, single battery current, a grading cabinet temperature trend curve, alarm type and times, a voltage trend curve and the like. The test result can be displayed to the user in the Access or Excel format, and the test report is output and printed in the Word format.
In summary, the battery formation and capacity division system provided by the invention is provided with the lower computer system, the middle computer system and the upper computer system, so that the battery formation and capacity division system with high precision, high safety performance, strong reliability and simple and convenient operation is realized.
In the system, the lower computer mainly executes the instruction sent by the upper computer to realize the control of the battery capacity grading cabinet. The lower computer has the function of collecting voltage, current and temperature information of the single batteries, transmits the collected information to the upper computer through the CAN bus, and carries out data processing and risk assessment by the upper computer system to control over-current, over-voltage and other dangerous factors. Electromagnetic interference prevention protection is adopted among all modules of the lower computer, so that the normal operation of all electronic components is ensured, and the failure rate is reduced.
The central computer system improves the safety level of the grading cabinet by detecting the temperature, the smoke and the fire of the public power supply and the grading cabinet. Electromagnetic interference prevention protection is adopted among all modules of the central computer, so that the normal operation of all electronic components is ensured, and the failure rate is reduced.
And after the upper computer system receives the information of alarming, voltage acquisition, current acquisition, battery temperature and the like of the lower computer or the middle computer, the information is analyzed and processed, and then corresponding measures are implemented. The corresponding measures are taken: when the upper computer receives the alarm information, the most effective measures are taken after the severity of the alarm information and the position of the content distribution cabinet are integrated, and maintenance staff are dispatched to check the alarm information; when the upper computer receives the voltage, current and temperature information of the single battery collected by the lower computer, the upper computer can further control the charge-discharge module of the lower computer according to the collected information, so that the capacity grading efficiency reaches the highest level and the faults of overcharge, overdischarge, overload and the like are reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A battery chemical composition and capacity system, comprising: the system comprises an upper computer system, a middle computer system and a lower computer system, wherein the upper computer system, the middle computer system and the lower computer system are connected in an annular mode; wherein,
the central computer system is used for monitoring the battery capacity grading cabinet and the environment where the battery capacity grading cabinet is located, and sending alarm information to the upper computer system when an abnormality occurs;
the lower computer system is used for executing a control instruction from the upper computer system to control the battery capacity grading cabinet, collecting state information of batteries in the battery capacity grading cabinet and uploading the state information to the upper computer system;
and the upper computer system is used for carrying out data processing on the state information acquired by the lower computer system and the alarm information sent by the middle computer system and sending a control instruction according to a processing result.
2. The battery chemical composition and capacity grading system according to claim 1, wherein the upper computer system, the middle computer system and the lower computer system communicate through a CAN bus.
3. The battery chemical composition and capacity grading system according to claim 1, wherein the lower computer system comprises: the device comprises a main control module, a charge-discharge module, a data acquisition module, a communication module, a switch control module, an overload overcurrent protection module, a power supply module and a display module;
the main control module is used for controlling the corresponding module to work according to the control instruction;
the data acquisition module is used for acquiring the state information of the single batteries in the battery capacity grading cabinet;
the charge and discharge module is used for charging and discharging the single battery;
the switch control module is used for starting or closing the charging and discharging process of the charging and discharging module under the control of the main control module;
the communication module is used for receiving the control instruction and sending the state information to the upper computer system;
the power supply module is used for supplying power to other modules of the lower computer system;
the display module is used for displaying the current, the voltage, the temperature, the capacity grading process and the selection mode of the single battery;
the overload overcurrent protection module is used for carrying out overload protection when the battery capacity grading cabinet exceeds rated load current and carrying out overcurrent protection when circuit current is overlarge.
4. The battery chemical composition and capacity system of claim 3, wherein the data acquisition module comprises:
the voltage and current sampling devices are respectively used for acquiring voltage and current data of the single battery;
and the temperature sensor is used for acquiring temperature change data of the single battery in the charging and discharging process.
5. The battery chemical composition and capacity grading system according to claim 1, wherein the central computer system comprises a power supply monitoring control module, a temperature monitoring control module and/or a fire fighting monitoring control module;
the power supply monitoring control module is used for monitoring a public power supply and uploading a monitoring result to the upper computer system;
the temperature monitoring control module is used for monitoring the temperature in the battery capacity grading cabinet and uploading the monitoring result to the upper computer system;
the fire-fighting monitoring control module is used for monitoring smoke and fire in the battery capacity grading cabinet and uploading a monitoring result to the upper computer system.
6. The battery chemical composition and capacity grading system according to claim 5, wherein when the power monitoring and control module monitors the public power, if the voltage exceeds a first preset range, the power monitoring and control module sends a voltage abnormality warning to the upper computer system;
when the temperature monitoring control module monitors the temperature in the battery capacity grading cabinet, if the temperature exceeds a second preset range, sending a temperature abnormity warning to the upper computer system;
the fire-fighting monitoring control module monitors smoke and fire in the battery capacity-sharing cabinet through a smoke sensor and a thermal sensing camera, and if the fire is monitored, the fire-fighting monitoring control module controls the dry-chemical fire extinguisher to be started and sends a fire report to the upper computer system.
7. The battery chemical composition and capacity grading system according to claim 1, wherein the upper computer system comprises: the device comprises a user login module, a detection scheme selection module, a calibration initialization module, an interface display module, an alarm module, a data management module and a precision coefficient adjustment module; wherein,
the user login module is used for managing information of a user and executing login operation;
the detection scheme selection module is used for providing a detection scheme for a user to select;
the calibration initialization module is used for initializing initial parameters for performing calibration test on the battery capacity grading cabinet;
the interface display module is used for managing and displaying information of the upper computer system, the middle computer system and the lower computer system;
the alarm module is used for processing alarm information from the middle position machine system;
the data management module is used for executing data management of state information acquired by the lower computer system and alarm information sent by the middle computer system;
and the precision coefficient adjusting module is used for debugging the voltage precision and the current precision of the voltage and current sampling device.
8. The battery chemical composition capacity system of claim 7, wherein the content of the calibration initialization module initialization comprises: the method comprises the steps of automatically running a calibration test process, testing the functions of the CC and the CV of the battery capacity grading cabinet, calibrating the standard voltage and the standard current of the battery capacity grading cabinet, switching and calibrating the working mode of the battery capacity grading cabinet, calibrating a display screen of an interface display module, automatically detecting an alarm module, automatically detecting a communication system and initializing software of a central computer system and a lower computer system.
9. The battery chemical composition and capacity system of claim 7, wherein the data management module comprises: the battery parameter input module is used for inputting the information of the single batteries in the battery capacity grading cabinet, and the information of the single batteries comprises: manufacturer information, battery production process, capacity grading flow and reports.
10. The battery chemical composition and capacity system of claim 7, wherein the data management module comprises:
the data query module is used for querying a test result of the battery through keywords and displaying the test result to a user in an Access or Excel format, wherein the keywords comprise: a user name, a file name, a test date, a battery number and a grading cabinet number; and/or
The test report printing module is used for arranging the test results into the test reports to be output and printed, and the test results comprise: the method comprises the following steps of numbering a grading cabinet, testing date, battery type, battery qualification rate, single battery current, a grading cabinet temperature trend curve, alarm type and times and a voltage trend curve.
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