CN110649335B - Thermal runaway prevention control system and method for lithium ion battery - Google Patents

Thermal runaway prevention control system and method for lithium ion battery Download PDF

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CN110649335B
CN110649335B CN201910949420.7A CN201910949420A CN110649335B CN 110649335 B CN110649335 B CN 110649335B CN 201910949420 A CN201910949420 A CN 201910949420A CN 110649335 B CN110649335 B CN 110649335B
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王驰伟
冯树南
杨益志
祁春翔
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Jiewei Power Industry Jiangsu Co ltd
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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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • 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
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The invention discloses a system and a method for controlling thermal runaway prevention of a lithium ion battery, wherein the system comprises a temperature acquisition module for acquiring the temperature of the surface of the lithium ion battery, a heat dissipation module for dissipating the heat of the lithium ion battery, a central control module for enabling a user to screen the acquired temperature, an alarm module for alarming when the temperature of the surface of the lithium ion battery is too high, a power supply module for supplying power to all the modules and a signal transmission module for transmitting data with a remote PC (personal computer); the power supply module is respectively and electrically connected with the temperature acquisition module, the heat dissipation module, the central processing module, the alarm module and the signal transmission module.

Description

Thermal runaway prevention control system and method for lithium ion battery
Technical Field
The invention relates to the field of lithium batteries, in particular to a thermal runaway prevention control system and method for a lithium ion battery.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charging and discharging, Li + is inserted and extracted back and forth between two electrodes: during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. The working temperature range is-20 ℃ to 60 ℃.
Lithium batteries are classified into lithium batteries and lithium ion batteries. Lithium ion batteries are used in mobile phones and notebook computers, and are commonly called as lithium batteries. The battery generally adopts a material containing lithium element as an electrode, and is a representative of modern high-performance batteries. The real lithium battery is rarely applied to daily electronic products due to high danger.
The most common cause of explosion in batteries is a mistake in the charging process. In an electronic device using a lithium battery, there is often related software that sets the amount of electricity that the lithium battery should be charged, and the charging speed. If the relevant setting is wrong, the compounds in the battery will be unstable, and a problem called "thermal runaway" by researchers occurs, which may cause combustion or explosion.
The lithium battery is also explosive due to the high temperature. Therefore, some smart phones can actively give an alarm when the temperature of the battery is too high, and prompt a user to cool down.
Another cause of overheating and explosion occurs during the manufacturing process, or at the user's discretion. If unwanted material (such as a small iron piece) is left in the battery manufacturing process, this can cause a short circuit in the battery and cause thermal runaway.
Disclosure of Invention
The invention aims to provide a thermal runaway prevention control system and method for a lithium ion battery, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a thermal runaway prevention control system of a lithium ion battery comprises a temperature acquisition module for acquiring the surface temperature of the lithium ion battery, a heat dissipation module for dissipating heat of the lithium ion battery, a central control module for enabling a user to screen the acquired temperature, an alarm module for alarming the overhigh surface temperature of the lithium ion battery, a power supply module for supplying power to all the modules and a signal transmission module for transmitting data with a remote PC (personal computer);
the power supply module is respectively and electrically connected with the temperature acquisition module, the heat dissipation module, the central processing module, the alarm module and the signal transmission module.
According to the technical scheme, the temperature acquisition module comprises an internal temperature sensor for sensing the surface temperature of the lithium ion battery in real time and an external temperature sensor for sensing the external temperature;
the internal temperature sensor and the external temperature sensor are electrically connected with the heat dissipation module;
the internal temperature sensor is electrically connected with the central processing module;
according to the technical scheme, the heat dissipation module comprises a semiconductor refrigeration piece for cooling the surface of the lithium ion battery and a second temperature sensor for monitoring the temperature of the surface of the lithium ion battery close to one side of the semiconductor refrigeration piece, the semiconductor refrigeration piece is adhered to the surface of the lithium ion battery close to one side of the semiconductor refrigeration piece, and the type of the semiconductor refrigeration piece is TEC 2-2540840N 40.
According to the technical scheme, the central control module is internally provided with a PLC chip, the input end of the PLC chip is electrically connected with the temperature acquisition module, the output end of the PLC chip is electrically connected with the alarm module and the signal transmission module, the central control module is provided with a display screen for displaying the real-time temperature of the surface of the lithium ion battery, and the display screen is connected with the PLC chip, wherein the interface of the display screen at least comprises a lithium ion battery surface temperature notification area, an indoor atmospheric temperature notification area and a lithium ion battery surface suitable temperature notification area.
According to the technical scheme, the alarm module comprises a buzzer for sounding, and an emergency switch button for turning off and turning on the buzzer is arranged on the alarm module.
According to the technical scheme, the power module is provided with a USB female port for supplying power and a USB male port for connecting an external power supply through a corresponding power line, the power module is internally provided with a switch relay for cutting off and starting the power module, and the model of the switch relay adopts a T73(3FF)12V/A small-sized general relay.
According to the technical scheme, the equipment of the signal transmission module consists of a router and wireless WI-FI.
A thermal runaway prevention control method of a lithium ion battery comprises the following steps:
s1, collecting the surface temperature of the lithium ion battery by using a temperature collecting module;
s2: processing the temperature information acquired by the temperature acquisition module by using the central processing module;
s3: comparing the temperature data acquired by the temperature acquisition module with a set threshold value by using the central processing module, and judging whether the surface of the lithium ion battery is overheated or not;
s4: the collected temperature data exceeds a set threshold value, and the data is sent to an alarm module and a signal transmission module;
s5: the collected temperature does not exceed the predetermined threshold and the central processing module does not process it.
According to the above technical solution, when the temperature acquisition system is used to acquire the temperature of the surface of the lithium ion battery in step S1, the method further includes the following steps:
a1, detecting the temperature of the external air by using an external temperature sensor;
a2, detecting the surface temperature of the lithium ion battery by using an internal temperature sensor;
a3, when the temperature of the outside air is greater than or equal to a set threshold, controlling the opening of the heat dissipation module to realize the temporary cooling of the surface of the lithium ion battery;
a4, detecting the surface temperature of the lithium ion battery by an internal temperature sensor, when the surface temperature is greater than or equal to a set threshold value, on one hand, controlling a heat dissipation module to temporarily cool the surface of the lithium ion battery, starting a second temperature sensor to monitor the temperature of one side of the lithium ion battery close to the heat dissipation module in real time, and sending the monitored temperature to a central control module for processing;
on the other hand, real-time temperature data of the lithium ion battery surface close to one side of the internal temperature sensor is sent to the central control module for processing;
and A5, calculating and analyzing by the central control module by using the data transmitted by the second temperature sensor and the internal temperature sensor.
According to the technical scheme: in the step a5, when an internal temperature sensor is used to collect the temperature of one side of the surface of the lithium ion battery, the second temperature sensor collects the temperature of the other side of the surface of the lithium ion battery;
the internal temperature sensor is arranged on one side of the surface of the lithium ion battery and is used for collecting the real-time temperature of the surface of the lithium ion battery, whereinThe collected temperature data is set to N1、N2、N3、…、NnAnd acquiring the real-time temperature of one side of the surface of the lithium ion battery close to the heat dissipation module by using a second temperature sensor, wherein the acquired temperature data is Y1、Y2、Y3、…、YnSetting the detection times of the internal temperature sensor and the second temperature sensor as C, setting the average value of the difference between the collected temperatures of the internal temperature sensor and the second temperature sensor as L, and according to the formula:
L＝(N1-Y1)+(N2-Y2)+…+(Nn-Yn)/C
when L is less than or equal to a set threshold value, the central control module judges that the surface temperature of the lithium ion battery is too high and sends data to the alarm module and the signal transmission module; when L is larger than a set threshold value, the central control module does not process;
the time for collecting the temperature of the internal temperature sensor and the second temperature sensor is T1、T2、T3、…、TnSetting the ratio of the difference between the collected temperature of the currently measured internal temperature sensor and the second temperature sensor and the collected temperature of the internal temperature sensor and the second temperature sensor which are measured last time to the difference between the currently measured time and the last measured time as M, and according to the formula:
Figure BDA0002225107660000051
m can be calculated by the formula1、M2、M3、…、MnTherefore, the temperature of the surface of the lithium ion battery which continuously rises can be predicted, the predicted value is set to be Z, and the formula for calculating the predicted value Z is as follows:
Z＝(Nn-Yn)+Mn-1
and obtaining a predicted value Z through the formula, sending the predicted value Z to a display screen by the central control module, and informing the predicted value Z by the display screen.
Compared with the prior art, the invention has the beneficial effects that:
1. the temperature acquisition system is arranged, the surface temperature of the lithium ion battery is detected by using the external temperature sensor and the internal temperature sensor, the surface of the lithium ion battery is temporarily cooled by using the heat dissipation module, the temperature of one side of the heat dissipation module is detected in real time by using the second temperature sensor, and the average number of the temperature difference between the internal temperature sensor and the second temperature sensor is calculated by using the central control module, so that whether the lithium ion battery is overheated or not is judged, the surface overheating of the lithium ion battery is avoided, and the lithium ion battery is damaged.
2. Set up alarm module and signal transmission module, carry out signal transmission to alarm module through central control module, thereby report to the police under the overheated condition in lithium ion battery surface, alarm module is including the bee calling organ that is used for sounding, the siren, one or more or its combination in the loudspeaker, emergency switch button can be used for closing and opening bee calling organ, signal transmission module comprises router and wireless WI-FI, can send alarm signal to long-range PC, thereby make operating personnel faster will cool down the protection to lithium ion battery, prevent that lithium ion battery from overheating and causing the damage.
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In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
FIG. 1 is a schematic structural diagram of a thermal runaway prevention control system of a lithium ion battery according to the invention;
FIG. 2 is a schematic diagram illustrating steps of a thermal runaway prevention control method for a lithium ion battery according to the present invention;
fig. 3 is a detailed step diagram of step S1 of the method for controlling thermal runaway prevention of a lithium ion battery according to the present invention;
fig. 4 is a schematic diagram of an implementation process of a thermal runaway prevention control method for a lithium ion battery according to 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.
A thermal runaway prevention control system and method for a lithium ion battery are provided.
The working principle of the invention is as follows: as shown in fig. 1, a thermal runaway prevention control system for a lithium ion battery includes a temperature acquisition module for acquiring a temperature of a surface of the lithium ion battery, where the temperature acquisition module includes an internal temperature sensor for sensing the surface temperature of the lithium ion battery in real time and an external temperature sensor for sensing an external temperature;
the internal temperature sensor and the external temperature sensor are electrically connected with the heat dissipation module;
the internal temperature sensor is electrically connected with the central processing module;
the system comprises a heat dissipation module for dissipating heat of the lithium ion battery, the heat dissipation module comprises a semiconductor refrigeration piece for cooling the surface of the lithium ion battery and a second temperature sensor for monitoring the surface temperature of one side, close to the semiconductor refrigeration piece, of the lithium ion battery, the semiconductor refrigeration piece is adhered to the surface of the lithium ion battery close to one side of the semiconductor refrigeration piece, and the model of the semiconductor refrigeration piece is TEC 2-2540840N 40.
The system is including being used for making the user carry out the central control module of screening processing with the temperature of gathering, the inside PLC chip that is equipped with of central control module, the input and the temperature acquisition module electricity of PLC chip are connected, the output and the alarm module and the signal transmission module electricity of PLC chip are connected, be equipped with the display screen that is used for showing the real-time temperature in lithium ion battery surface on the central control module, the display screen is connected with the PLC chip, wherein, the interface of display screen includes lithium ion battery surface temperature at least and infories the district, the district is inforied to indoor atmospheric temperature, lithium ion battery surface is fit for the temperature and info.
The system comprises an alarm module for alarming the overhigh surface temperature of the lithium ion battery, wherein the alarm module comprises a buzzer for sounding, and an emergency switch button for turning off and on the buzzer is arranged on the alarm module.
The system comprises a signal transmission module for transmitting data with a remote PC, and the equipment of the signal transmission module consists of a router and wireless WI-FI.
The system comprises a power supply module for supplying power to all modules, wherein the power supply module is provided with a USB female port for supplying power and a USB male port for connecting an external power supply through a corresponding power line, a switch relay for cutting off and starting the power supply module is arranged in the power supply module, and the model of the switch relay adopts a T73(3FF)12V/A small-sized universal relay; the power supply module is respectively and electrically connected with the temperature acquisition module, the heat dissipation module, the central processing module, the alarm module and the signal transmission module.
As shown in fig. 2 and 3: a thermal runaway prevention control method of a lithium ion battery comprises the following steps:
s1, collecting the surface temperature of the lithium ion battery by using a temperature collecting module;
the step of S1 further includes:
a1, detecting the temperature of the external air by using an external temperature sensor;
a2, detecting the surface temperature of the lithium ion battery by using an internal temperature sensor;
a3, when the temperature of the outside air is greater than or equal to a set threshold, controlling the opening of the heat dissipation module to realize the temporary cooling of the surface of the lithium ion battery;
a4, detecting the surface temperature of the lithium ion battery by an internal temperature sensor, when the surface temperature is greater than or equal to a set threshold value, on one hand, controlling a heat dissipation module to temporarily cool the surface of the lithium ion battery, starting a second temperature sensor to monitor the temperature of one side of the lithium ion battery close to the heat dissipation module in real time, and sending the monitored temperature to a central control module for processing;
on the other hand, real-time temperature data of the lithium ion battery surface close to one side of the internal temperature sensor is sent to the central control module for processing;
and A5, calculating and analyzing by the central control module by using the data transmitted by the second temperature sensor and the internal temperature sensor.
Wherein the threshold value for the outside air temperature is set to 30 degrees.
S2: processing the temperature information acquired by the temperature acquisition module by using the central processing module;
s3: comparing the temperature data acquired by the temperature acquisition module with a set threshold value by using the central processing module, and judging whether the surface of the lithium ion battery is overheated or not;
s4: the collected temperature data exceeds a set threshold value, and the data is sent to an alarm module and a signal transmission module;
s5: the collected temperature does not exceed the predetermined threshold and the central processing module does not process it.
In the step a5, when an internal temperature sensor is used to collect the temperature of one side of the surface of the lithium ion battery, the second temperature sensor collects the temperature of the other side of the surface of the lithium ion battery;
the internal temperature sensor is arranged on one side of the surface of the lithium ion battery and used for collecting the real-time temperature of the surface of the lithium ion battery, and the collected temperature data is set to be N1、N2、N3、…、NnAnd acquiring the real-time temperature of one side of the surface of the lithium ion battery close to the heat dissipation module by using a second temperature sensor, wherein the acquired temperature data is Y1、Y2、Y3、…、YnSetting the detection times of the internal temperature sensor and the second temperature sensor as C, setting the average value of the difference between the collected temperatures of the internal temperature sensor and the second temperature sensor as L, and according to the formula:
L＝(N1-Y1)+(N2-Y2)+…+(Nn-Yn)/C
when L is less than or equal to a set threshold value, the central control module judges that the surface temperature of the lithium ion battery is too high and sends data to the alarm module and the signal transmission module; when L is larger than a set threshold value, the central control module does not process;
the time for collecting the temperature of the internal temperature sensor and the second temperature sensor is T1、T2、T3、…、TnSetting the ratio of the difference between the collected temperature of the currently measured internal temperature sensor and the second temperature sensor and the collected temperature of the internal temperature sensor and the second temperature sensor which are measured last time to the difference between the currently measured time and the last measured time as M, and according to the formula:
Figure BDA0002225107660000111
m can be calculated by the formula1、M2、M3、…、MnTherefore, the temperature of the surface of the lithium ion battery which continuously rises can be predicted, the predicted value is set to be Z, and the formula for calculating the predicted value Z is as follows:
Z＝(Nn-Yn)+Mn-1
and obtaining a predicted value Z through the formula, sending the predicted value Z to a display screen by the central control module, and informing the predicted value Z by the display screen.
In example 1, the conditions are defined, the internal temperature sensor sets the threshold value to be 40 degrees, the internal temperature sensor measures the surface of the lithium ion battery in real time, the measured data are respectively 48 ℃, 50 ℃ and 52 ℃, the measurement times are three times, and the corresponding time is respectively 11:00, 12:00 and 13: 00;
the second temperature sensor measures the surface temperature of the lithium ion battery close to one side of the heat dissipation module, and the measured data are respectively 20 ℃, 24 ℃ and 24 ℃.
According to the formula L ═ N1-Y1)+(N2-Y2)+…+(Nn-Yn) The calculation result of the temperature is that L is (48-20) + (50-22) + (52-22)/3 is 28 ℃, the set threshold value of the L is 20 ℃, the L is more than 20 ℃, and the central control module does not process the L;
when the central control module does not give an alarm, the central processing module can predict the surface temperature of the lithium ions at the next moment according to the fact that the central control module does not give an alarm
Figure BDA0002225107660000112
Is calculated to obtain
Figure BDA0002225107660000113
According to the formula Z ═ Nn-Yn)+Mn-1Calculating to obtain Z ═ (52-22) +1 ═ 31 ℃; therefore, the predicted value of the comprehensive temperature of the surface of the lithium ion battery at the moment of 14:00 is 31 ℃, the central control module sends the predicted value of 31 ℃ to the display screen, and the display screen informs the predicted value of 31 ℃ to remind workers.
Example 2: limiting conditions, setting a threshold value of 40 ℃ by an internal temperature sensor, measuring the surface of the lithium ion battery by the internal temperature sensor in real time, wherein the measured data are respectively 40 ℃, 50 ℃ and 60 ℃, the measuring times are three times, and the corresponding time is respectively 10:00, 11:00 and 12: 00;
the second temperature sensor measures the surface temperature of the lithium ion battery close to one side of the heat dissipation module, and the measured data are respectively 25 ℃, 27 ℃ and 29 ℃.
According to the formula L ═ N1-Y1)+(N2-Y2)+…+(Nn-Yn) The calculation result of the temperature is that L is (40-25) + (50-27) + (60-29)/3 is 23 ℃, the set threshold value of the L is 20 ℃, the L is more than 20 ℃, and the central control module does not process the L;
when the central control module does not give an alarm, the central processing module can predict the surface temperature of the lithium ions at the next moment according to the fact that the central control module does not give an alarm
Figure BDA0002225107660000121
Is calculated to obtain
Figure BDA0002225107660000122
According to the formula Z ═ Nn-Yn)+Mn-1Calculated to give Z ═ (60-29) +8 ═ 39 ℃; therefore, the predicted value of the comprehensive temperature of the surface of the lithium ion battery at the moment of 14:00 is 39 ℃, the central control module sends the predicted value of 39 ℃ to the display screen, and the display screen carries out prediction on the predicted value of 39 DEG CAnd (5) performing notification to remind workers.
Example 3: limiting conditions, setting a threshold value of 40 ℃ by an internal temperature sensor, measuring the surface of the lithium ion battery by the internal temperature sensor in real time, wherein the measured data are respectively 45 ℃, 55 ℃ and 65 ℃, the measuring times are three times, and the corresponding time is respectively 16:00, 17:00 and 18: 00;
the second temperature sensor measures the surface temperature of the lithium ion battery close to one side of the heat dissipation module, and the measured data are 31 ℃, 42 ℃ and 53 ℃.
According to the formula L ═ N1-Y1)+(N2-Y2)+…+(Nn-Yn) And C, calculating to obtain that L is (65-53) + (55-42) + (45-31)/3 is 13 ℃, the set threshold value of L is 20 ℃, L is less than 20 ℃, the central control module immediately sends the data to the alarm module and the signal transmission module, the alarm module starts a buzzer to give an alarm, and the signal transmission module sends the data to a remote PC to give a strong prompt.
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.

Claims (1)

1. A thermal runaway prevention control method of a thermal runaway prevention control system of a lithium ion battery is characterized by comprising the following steps: the system comprises a temperature acquisition module for acquiring the temperature of the surface of the lithium ion battery, a heat dissipation module for dissipating heat of the lithium ion battery, a central control module for enabling a user to screen the acquired temperature, an alarm module for alarming when the temperature of the surface of the lithium ion battery is too high, a power supply module for supplying power to all the modules and a signal transmission module for transmitting data with a remote PC (personal computer);
the power supply module is respectively and electrically connected with the temperature acquisition module, the heat dissipation module, the central processing module, the alarm module and the signal transmission module;
the temperature acquisition module comprises an internal temperature sensor for sensing the surface temperature of the lithium ion battery in real time and an external temperature sensor for sensing the external temperature;
the internal temperature sensor and the external temperature sensor are electrically connected with the heat dissipation module;
the internal temperature sensor is electrically connected with the central processing module;
the heat dissipation module comprises a semiconductor refrigeration piece for cooling the surface of the lithium ion battery and a second temperature sensor for monitoring the surface temperature of one side, close to the semiconductor refrigeration piece, of the lithium ion battery, the semiconductor refrigeration piece is adhered to the surface of the lithium ion battery close to one side of the semiconductor refrigeration piece, and the model of the semiconductor refrigeration piece is TEC 2-2540840N 40;
the central control module is internally provided with a PLC chip, the input end of the PLC chip is electrically connected with the temperature acquisition module, the output end of the PLC chip is electrically connected with the alarm module and the signal transmission module, the central control module is provided with a display screen for displaying the real-time temperature of the surface of the lithium ion battery, and the display screen is connected with the PLC chip, wherein the interface of the display screen at least comprises a lithium ion battery surface temperature notification area, an indoor atmospheric temperature notification area and a lithium ion battery surface proper temperature notification area;
the alarm module comprises a buzzer for sounding, and an emergency switch button for turning off and turning on the buzzer is arranged on the alarm module;
the power module is provided with a USB female port for supplying power and a USB male port for connecting an external power supply through a corresponding power line, a switch relay for cutting off and starting the power module is arranged in the power module, and the model of the switch relay adopts a T73(3FF)12V/A small universal relay;
the equipment of the signal transmission module consists of a router and wireless WI-FI;
the thermal runaway prevention control method comprises the following steps:
s1, collecting the surface temperature of the lithium ion battery by using a temperature collecting module;
s2: processing the temperature information acquired by the temperature acquisition module by using the central processing module;
s3: comparing the temperature data acquired by the temperature acquisition module with a set threshold value by using the central processing module, and judging whether the surface of the lithium ion battery is overheated or not;
s4: the collected temperature data exceeds a set threshold value, and the data is sent to an alarm module and a signal transmission module;
s5: the central processing module does not process the acquired temperature which does not exceed a preset threshold value; in step S1, when the temperature acquisition system is used to acquire the temperature of the surface of the lithium ion battery, the method further includes the following steps:
a1, detecting the temperature of the external air by using an external temperature sensor;
a2, detecting the surface temperature of the lithium ion battery by using an internal temperature sensor;
a3, when the temperature of the outside air is greater than or equal to a set threshold, controlling the opening of the heat dissipation module to realize the temporary cooling of the surface of the lithium ion battery;
a4, detecting the surface temperature of the lithium ion battery by an internal temperature sensor, when the surface temperature is greater than or equal to a set threshold value, on one hand, controlling a heat dissipation module to temporarily cool the surface of the lithium ion battery, starting a second temperature sensor to monitor the temperature of one side of the lithium ion battery close to the heat dissipation module in real time, and sending the monitored temperature to a central control module for processing;
on the other hand, real-time temperature data of the lithium ion battery surface close to one side of the internal temperature sensor is sent to the central control module for processing;
a5, the central control module calculates and analyzes by using the data transmitted by the second temperature sensor and the internal temperature sensor;
in the step a5, when an internal temperature sensor is used to collect the temperature of one side of the surface of the lithium ion battery, the second temperature sensor collects the temperature of the other side of the surface of the lithium ion battery;
the internal temperature sensor is arranged on one side of the surface of the lithium ion battery and used for collecting the real-time temperature of the surface of the lithium ion battery, and the collected temperature data is set to be N1、N2、N3、…、NnAnd acquiring the real-time temperature of one side of the surface of the lithium ion battery close to the heat dissipation module by using a second temperature sensor, wherein the acquired temperature data is Y1、Y2、Y3、…、YnSetting the detection times of the internal temperature sensor and the second temperature sensor as C, setting the average value of the difference between the collected temperatures of the internal temperature sensor and the second temperature sensor as L, and according to the formula:
L＝(N1-Y1)+(N2-Y2)+…+(Nn-Yn)/C
when L is less than or equal to a set threshold value, the central control module judges that the surface temperature of the lithium ion battery is too high and sends data to the alarm module and the signal transmission module; when L is larger than a set threshold value, the central control module does not process;
the time for collecting the temperature of the internal temperature sensor and the second temperature sensor is T1、T2、T3、…、TnSetting the ratio of the difference between the collected temperature of the currently measured internal temperature sensor and the second temperature sensor and the collected temperature of the internal temperature sensor and the second temperature sensor which are measured last time to the difference between the currently measured time and the last measured time as M, and according to the formula:
Figure FDA0002692512170000041
m can be calculated by the formula1、M2、M3、…、MnTherefore, the temperature of the surface of the lithium ion battery which continuously rises can be predicted, the predicted value is set to be Z, and the formula for calculating the predicted value Z is as follows:
Z＝(Nn-Yn)+Mn-1
and obtaining a predicted value Z through the formula, sending the predicted value Z to a display screen by the central control module, and informing the predicted value Z by the display screen.
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Publication number Priority date Publication date Assignee Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290618A (en) * 2011-07-26 2011-12-21 浙江吉利汽车研究院有限公司 Vehicle battery thermal management system
CN105609895A (en) * 2016-03-07 2016-05-25 宁德时代新能源科技股份有限公司 battery pack thermal management system
CN105789655A (en) * 2016-03-04 2016-07-20 广东工业大学 Temperature measurement and temperature control integration system for battery module
CN106384854A (en) * 2016-10-26 2017-02-08 广东工业大学 Power battery with inside temperature measuring and heating functions and control method thereof
CN106486700A (en) * 2016-11-02 2017-03-08 凤凰新能源(惠州)有限公司 The core strueture of power lithium-ion battery
KR20190061442A (en) * 2017-11-28 2019-06-05 주식회사 엘지화학 Internal-Pressure Sensitive Color Changing Pouch-Type Battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290618A (en) * 2011-07-26 2011-12-21 浙江吉利汽车研究院有限公司 Vehicle battery thermal management system
CN105789655A (en) * 2016-03-04 2016-07-20 广东工业大学 Temperature measurement and temperature control integration system for battery module
CN105609895A (en) * 2016-03-07 2016-05-25 宁德时代新能源科技股份有限公司 battery pack thermal management system
CN106384854A (en) * 2016-10-26 2017-02-08 广东工业大学 Power battery with inside temperature measuring and heating functions and control method thereof
CN106486700A (en) * 2016-11-02 2017-03-08 凤凰新能源(惠州)有限公司 The core strueture of power lithium-ion battery
KR20190061442A (en) * 2017-11-28 2019-06-05 주식회사 엘지화학 Internal-Pressure Sensitive Color Changing Pouch-Type Battery

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