CN114709499A - Lithium battery monitoring system and method based on fire-fighting parameters - Google Patents
Lithium battery monitoring system and method based on fire-fighting parameters Download PDFInfo
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- CN114709499A CN114709499A CN202210504421.2A CN202210504421A CN114709499A CN 114709499 A CN114709499 A CN 114709499A CN 202210504421 A CN202210504421 A CN 202210504421A CN 114709499 A CN114709499 A CN 114709499A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 128
- 238000012544 monitoring process Methods 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003313 weakening effect Effects 0.000 claims abstract description 74
- 230000035939 shock Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- H01M10/4285—Testing apparatus
-
- 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
-
- 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
Abstract
The invention discloses a lithium battery monitoring system and method based on fire-fighting parameters, relating to the technical field of lithium batteries and comprising the following steps: monitoring the chip; the fire-fighting parameter acquisition module is arranged on the lithium battery, and the output end of the fire-fighting parameter acquisition module is connected with the monitoring chip; the lithium battery starting module is arranged on the lithium battery and is controlled by the control chip; the lithium battery interruption module is arranged on the lithium battery and is controlled by the control chip; the impact weakening module is connected between the lithium battery and the output end and is used for weakening impact waves generated by starting the lithium battery; and the power circulation monitoring module is arranged at the output end of the lithium battery and used for monitoring the power parameters of the lithium battery. This application starts through utilizing the control chip control to strike the module that weakens, can control the harm that the shock wave that produces when lithium battery output circuit switches on caused output circuit to a certain extent.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery monitoring system and method based on fire-fighting parameters.
Background
The rush current is a current which is generated at a moment when an electric appliance is powered, and is equivalent to short circuit, the output load is damaged by the current, and certain damage is caused to the load. Unlike other batteries, lithium batteries have the characteristics of high charge density, long service life, high unit cost and the like.
When the lithium cell uses, each occasion of lithium cell application in the life usually, the lithium cell also can produce impulse current in the twinkling of an eye that starts to cause certain damage to the lithium cell, influence the life of lithium cell, and still can cause the damage to the load.
Disclosure of Invention
The invention aims to provide a lithium battery monitoring system and method based on fire-fighting parameters, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a lithium battery monitoring system based on fire-fighting parameters comprises:
the monitoring chip is used for analyzing and processing the acquired data;
the fire-fighting parameter acquisition module is arranged on the lithium battery, and the output end of the fire-fighting parameter acquisition module is connected with the monitoring chip and used for monitoring and transmitting the fire-fighting parameters of the lithium battery;
the lithium battery starting module is arranged on the lithium battery and is controlled by the control chip;
the lithium battery interruption module is arranged on the lithium battery and is controlled by the control chip;
the impact weakening module is connected between the lithium battery and the output end and is used for weakening impact waves generated by starting the lithium battery;
and the power circulation monitoring module is arranged at the output end of the lithium battery and used for monitoring the power parameters of the lithium battery.
As a further scheme of the invention: the monitoring chip adopts any one of a PLC chip, a single chip microcomputer control chip and a DSP chip.
As a still further scheme of the invention: fire control parameter acquisition module includes smoke transducer, bright sensor, temperature sensor, humidity transducer and unusual gaseous concentration sensor, smoke transducer, bright sensor, temperature sensor, humidity transducer and unusual gaseous concentration sensor all set up on the lithium cell, just on smoke transducer, bright sensor, temperature sensor, humidity transducer and the unusual gaseous concentration sensor connection monitor chip.
As a still further scheme of the invention: the electric power circulation monitoring module includes voltage monitoring unit, current monitoring unit, leakage current monitoring unit and power loss monitoring unit, voltage monitoring unit, current monitoring unit, leakage current monitoring unit and power loss monitoring unit all set up the output of lithium cell.
As a still further scheme of the invention: the impact weakening module comprises a first weakening resistor, a second weakening resistor, a first weakening capacitor, a first switch and a second switch, the first weakening resistor and the second weakening resistor are connected to the output end of the lithium battery, the first other end of the first weakening resistor is connected with the first switch, the second other end of the second weakening resistor is connected with the second weakening capacitor, the second other end of the second weakening capacitor is connected with the second switch, and the first switch and the second switch are connected with the other end of the second switch to output outside.
As a still further scheme of the invention: the lithium battery starting module and the lithium battery interruption module comprise starting switches and interruption switches, and the starting switches and the interruption switches are respectively arranged on the lithium batteries and used for realizing comprehensive starting and shutting of the lithium batteries.
A lithium battery monitoring method based on fire-fighting parameters comprises the following steps:
s1, starting the lithium battery starting module, and controlling the impact weakening module by using the monitoring chip to realize starting;
s2, the power circulation monitoring module transmits the obtained data to the monitoring chip until the monitoring chip judges that the data is stable;
and S3, the monitoring chip controls the data obtained by the fire-fighting parameter acquisition module, analyzes the data, and controls the lithium battery interruption module to interrupt the lithium battery if the data is abnormal.
As a further scheme of the invention: the step S1 includes the steps of:
s11, the lithium battery starting module controls the main switch to be turned on, and the impact weakening module is started;
s12, the switch II is closed, and the weakening capacitor is connected into the output circuit;
s13, closing the first switch, connecting the first weakening resistor into an output circuit, and reducing shock waves by using the first weakening capacitor;
and S14, opening the second switch to remove the weakening capacitor from the output circuit.
As a still further scheme of the invention: the monitoring chip is connected to a network unit, and the step S2 includes the following steps:
s21, recording the voltage and current data monitored by the voltage monitoring unit and the current monitoring unit according to time intervals;
s22, drawing the data obtained in the step S21 into a table, and recording the difference obtained by the adjacent time intervals;
s23, setting a maximum difference threshold value through the monitoring chip, comparing the difference value obtained in the step S22 with the maximum difference threshold value, and if the difference value is smaller than the maximum difference threshold value, judging that the system is normal;
and S24, setting a stable value range through the monitoring chip, comparing the voltage and the current monitored by the voltage monitoring unit and the current monitoring unit with the stable value, and judging that the switch-on circuit is stable if ten continuous groups of data are in the stable value range.
Compared with the prior art, the invention has the beneficial effects that: according to the method and the device, the impact weakening module is controlled by the monitoring chip to start, so that the damage of impact waves generated when the output circuit of the lithium battery is switched on to the output circuit can be controlled to a certain extent; meanwhile, the fire-fighting parameter acquisition module is adopted, so that the current working state of the lithium battery can be monitored in real time, and the normal use of the lithium battery is ensured; this application is through adopting electric power circulation monitoring module, carries out real time monitoring to the circuit after the switch-on, guarantees when the circuit appears unusually, can in time utilize the lithium cell to break off the circuit with the module, guarantees the safety of lithium cell to guarantee holistic power supply safety.
Drawings
Fig. 1 is a schematic diagram of a lithium battery monitoring system based on fire-fighting parameters.
Fig. 2 is a schematic diagram of a lithium battery monitoring method based on fire-fighting parameters.
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.
Referring to fig. 1, in an embodiment of the present invention, a lithium battery monitoring system based on fire-fighting parameters includes: the monitoring chip is used for analyzing and processing acquired data, so that the monitoring chip adopts any one of a PLC (programmable logic controller) chip, a single-chip microcomputer control chip and a DSP (digital signal processor) chip, and meanwhile, the monitoring chip is networked, all states in monitoring of the lithium battery can be uploaded to a monitoring platform through a network, so that remote monitoring and remote control can be realized; the fire-fighting parameter acquisition module is arranged on the lithium battery, the output end of the fire-fighting parameter acquisition module is connected with the monitoring chip and is used for monitoring and transmitting the fire-fighting parameters of the lithium battery, the fire-fighting parameter acquisition module comprises a smoke sensor, a light sensor, a temperature sensor, a humidity sensor and an abnormal gas concentration sensor, the smoke sensor, the light sensor, the temperature sensor, the humidity sensor and the abnormal gas concentration sensor are all arranged on the lithium battery and are connected with the monitoring chip and are respectively used for sensing the temperature and the humidity of the lithium battery in normal work, sensing whether the lithium battery has abnormal smoke, combustion, leakage and other faults or not by using the smoke, sensing whether the lithium battery has the combustion or short circuit spark and other faults or not by using the light sensor, the abnormal concentration sensor is used for sensing whether faults such as combustion or leakage occur, so that the lithium battery can respond in time once the faults occur during normal use; the lithium battery starting module is arranged on the lithium battery and is controlled by the control chip; the lithium battery interruption module is arranged on the lithium battery and is controlled by the control chip, wherein the lithium battery starting module and the lithium battery interruption module comprise a starting switch and an interruption switch, and the starting switch and the interruption switch are respectively arranged on the lithium battery and are used for realizing the comprehensive starting and the interruption of the lithium battery and controlling the starting and the interruption of the lithium battery on the whole; in order to weaken the shock wave generated when the lithium battery is started, a shock weakening module is connected between the lithium battery and an output end and is used for weakening the shock wave generated when the lithium battery is started, namely the shock weakening module comprises a first weakening resistor, a second weakening resistor, a first weakening capacitor, a second weakening resistor, a first switch and a second switch, the output end of the lithium battery is connected with the first weakening resistor and the second weakening resistor, the other end of the first weakening resistor is connected with the first switch, the other end of the second weakening resistor is connected with the second weakening capacitor, the other ends of the first weakening resistor and the second switch are connected with external output, namely when the lithium battery is used, the first weakening capacitor is firstly started to weaken when the lithium battery is started, and meanwhile, the two pairs of weakening resistors are used for protecting when the lithium battery is started and closed, and then the first weakening resistor is connected under the condition that the first weakening capacitor is connected into the circuit, the weakening resistor is switched on, and the weakening capacitor is switched off, so that the output circuit is kept in an open state, and the impact current generated by the output circuit is effectively protected; the electric power circulation monitoring module sets up the output at the lithium cell, monitors the electric power parameter of lithium cell, and electric power circulation monitoring module includes voltage monitoring unit, current monitoring unit, leakage current monitoring unit and power loss monitoring unit, voltage monitoring unit, current monitoring unit, leakage current monitoring unit and power loss monitoring unit all set up the output of lithium cell wherein utilizes voltage monitoring unit to monitor output circuit's voltage, utilizes current monitoring unit to monitor output circuit's electric current, utilizes the monitor chip to obtain leakage current monitoring unit and power loss monitoring unit's data afterwards.
Referring to fig. 2, in an embodiment of the present invention, a lithium battery monitoring method based on fire-fighting parameters includes the following steps: s1, the lithium battery is started through a lithium battery starting module, the impact weakening module is controlled by a monitoring chip to realize starting, so that the lithium battery is started, the lithium battery starting module is controlled by the monitoring chip, a starting signal is transmitted to the monitoring chip after the lithium battery starting module is manually controlled, the monitoring chip is used for controlling the current data obtained by the fire-fighting parameter acquisition module, and if the data is normal, the lithium battery starting module can formally start the lithium battery; s2, the power circulation monitoring module transmits the obtained data to the monitoring chip until the monitoring chip judges that the data is stable, namely the power circulation monitoring module can upload the obtained data to the control platform through the networking unit, so that the power circulation monitoring module is used for monitoring the current power-on state; the obtained data of S3 control chip control fire control parameter acquisition module to data analysis, if there is the exception in data, then control lithium cell interruption module and break off the lithium cell, carry out stable in-process at the circuit after the circuit starts promptly and at the circuit, need carry out accurate control to the circuit, avoid a series of unstabilities that the data caused after the start, certain influence that causes the output load.
As a further embodiment of the present application, please refer to fig. 2, wherein step S1 includes the following steps: s11 the lithium battery starting module controls the main switch to be turned on, and starts the impact weakening module, namely, the lithium battery starting module needs to be turned on at first, the circuit of the lithium battery is turned on by using the monitoring chip, and the impact weakening module is turned on correspondingly at the moment; s12, the switch II is closed, the weakening capacitor is connected into the output circuit, namely at the moment, the weakening capacitor and the weakening resistor II are connected into the output circuit, and at the moment, the output load circuit is in an open state, so that the impact current can be weakened to a certain degree; s13, closing the switch I, connecting the weakening resistor I into the output circuit, and reducing the shock wave by using the weakening capacitor; the second switch of S14 is disconnected, the weakening capacitor is removed from the output circuit, only one weakening resistor I is connected into the load circuit at the moment, the power parameters of the load circuit can be kept stable under the condition of the weakening resistor I gradually, if the load circuit needs to be closed, the lithium battery interruption module is started by the monitoring chip, the second switch is controlled to be closed by the monitoring chip, the first switch is disconnected, the weakening resistor I is disconnected, the second switch is closed, the weakening capacitor is unloaded, the lithium battery interruption module is disconnected with the main switch, the load circuit is effectively protected, if the circuit is abnormal, the main switch is disconnected by the lithium battery interruption module directly, and the circuit and the lithium battery are protected rapidly.
As a further embodiment of the present application, please refer to fig. 2, the monitoring chip is connected to the network unit, and step S2 includes the following steps: s21, recording the voltage and current data monitored by the voltage monitoring unit and the current monitoring unit according to time intervals, so as to record the current condition of the power parameter in the circuit for subsequent data processing; s22, drawing the data obtained in the step S21 into a table, and recording the difference value obtained at the adjacent time interval, wherein in the process, the data needs to be uploaded to a monitoring chip as required, so that the monitoring chip uploads the data to a platform for processing, and the platform is provided with corresponding processing software; s23, setting a maximum difference threshold value through a monitoring chip, comparing the difference obtained in the step S22 with the maximum difference threshold value, if the difference is smaller than the maximum difference threshold value, judging that the system is normal, wherein the system is used for ensuring that the data of the circuit in the process from starting to stabilizing are abnormal, when the data are abnormal, directly disconnecting the circuit, correspondingly detecting the data, and judging the abnormal data; s24 sets a stable value range through the monitoring chip, compares the voltage and current monitored by the voltage monitoring unit and the current monitoring unit with the stable value, if the ten groups of continuous data are in the stable value range, judges the switch-on circuit is stable, if the switch-on circuit is unstable, firstly, the next time node picks the ten groups of data again, judges the data, if the data are still not stable, the data are transmitted to the central system for processing, and whether the control circuit normally operates or is disconnected according to the requirement.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a lithium battery monitoring system based on fire control parameter which characterized in that includes:
the monitoring chip is used for analyzing and processing the acquired data;
the fire-fighting parameter acquisition module is arranged on the lithium battery, and the output end of the fire-fighting parameter acquisition module is connected with the monitoring chip and used for monitoring and transmitting the fire-fighting parameters of the lithium battery;
the lithium battery starting module is arranged on the lithium battery and is controlled by the control chip;
the lithium battery interruption module is arranged on the lithium battery and is controlled by the control chip;
the impact weakening module is connected between the lithium battery and the output end and is used for weakening impact waves generated by starting the lithium battery;
and the power circulation monitoring module is arranged at the output end of the lithium battery and used for monitoring the power parameters of the lithium battery.
2. The lithium battery monitoring system based on fire-fighting parameters as recited in claim 1, wherein the monitoring chip is any one of a PLC chip, a single-chip microcomputer control chip and a DSP chip.
3. The lithium battery monitoring system based on fire-fighting parameters according to claim 1, wherein the fire-fighting parameter collection module comprises a smoke sensor, a light sensor, a temperature sensor, a humidity sensor and an abnormal gas concentration sensor, the smoke sensor, the light sensor, the temperature sensor, the humidity sensor and the abnormal gas concentration sensor are all arranged on the lithium battery, and the smoke sensor, the light sensor, the temperature sensor, the humidity sensor and the abnormal gas concentration sensor are connected to a monitoring chip.
4. The lithium battery monitoring system based on fire-fighting parameters according to claim 1, wherein the power circulation monitoring module comprises a voltage monitoring unit, a current monitoring unit, a leakage current monitoring unit and a power loss monitoring unit, and the voltage monitoring unit, the current monitoring unit, the leakage current monitoring unit and the power loss monitoring unit are all arranged at the output end of the lithium battery.
5. The lithium battery monitoring system based on fire-fighting parameters as claimed in claim 1, wherein the impact-weakening module comprises a first weakening resistor, a second weakening resistor, a first weakening capacitor, a first switch and a second switch, the first weakening resistor and the second weakening resistor are connected to the output end of the lithium battery, the first weakening resistor is connected to the other end of the first weakening resistor, the first weakening resistor is connected to the other end of the second weakening resistor, the second weakening capacitor is connected to the other end of the second weakening resistor, and the first weakening resistor and the second weakening resistor are connected to an external output.
6. The lithium battery monitoring system based on fire-fighting parameters as recited in claim 1, wherein the lithium battery starting module and the lithium battery interrupting module comprise a starting switch and an interrupting switch, and the starting switch and the interrupting switch are respectively disposed on the lithium battery for realizing the overall starting and shutting of the lithium battery.
7. A lithium battery monitoring method based on fire-fighting parameters is characterized by comprising the following steps:
s1, starting the lithium battery starting module, and controlling the impact weakening module by using the monitoring chip to realize starting;
s2, the power circulation monitoring module transmits the obtained data to the monitoring chip until the monitoring chip judges that the data is stable;
and S3, the monitoring chip controls the data obtained by the fire-fighting parameter acquisition module, analyzes the data, and controls the lithium battery interruption module to interrupt the lithium battery if the data is abnormal.
8. The lithium battery monitoring method based on fire-fighting parameters as recited in claim 1, wherein the step S1 includes the steps of:
s11, the lithium battery starting module controls the main switch to be turned on, and the impact weakening module is started;
s12, the switch II is closed, and the weakening capacitor is connected into the output circuit;
s13, closing the switch I, connecting the weakening resistor I into the output circuit, and reducing the shock wave by using the weakening capacitor;
s14, the second switch is opened, and the weakening capacitor is removed from the output circuit.
9. The lithium battery monitoring method based on fire-fighting parameters as recited in claim 1, wherein the monitoring chip is connected to a network unit, and the step S2 includes the following steps:
s21, recording the voltage and current data monitored by the voltage monitoring unit and the current monitoring unit according to time intervals;
s22, drawing the data obtained in the step S21 into a table, and recording the difference obtained by the adjacent time intervals;
s23, setting a maximum difference threshold value through the monitoring chip, comparing the difference value obtained in the step S22 with the maximum difference threshold value, and if the difference value is smaller than the maximum difference threshold value, judging that the system is normal;
and S24, setting a stable value range through the monitoring chip, comparing the voltage and the current monitored by the voltage monitoring unit and the current monitoring unit with the stable value, and judging that the switch-on circuit is stable if ten continuous groups of data are in the stable value range.
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| CN202210504421.2A CN114709499A (en) | 2022-05-10 | 2022-05-10 | Lithium battery monitoring system and method based on fire-fighting parameters |
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| CN114087226A (en) * | 2021-11-30 | 2022-02-25 | 上海氢蓝新能源科技有限公司 | Air compressor control system, method and storage medium for hydrogen fuel cell system |
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2022
- 2022-05-10 CN CN202210504421.2A patent/CN114709499A/en active Pending
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| CN103928958A (en) * | 2014-04-08 | 2014-07-16 | 深圳桑达国际电源科技有限公司 | Lithium battery charging or discharging management circuit and lithium battery management system |
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