CN207881842U - Lithium ion battery pack thermal runaway automatic alarm based on infrared thermal imaging technology - Google Patents
Lithium ion battery pack thermal runaway automatic alarm based on infrared thermal imaging technology Download PDFInfo
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- CN207881842U CN207881842U CN201820357912.8U CN201820357912U CN207881842U CN 207881842 U CN207881842 U CN 207881842U CN 201820357912 U CN201820357912 U CN 201820357912U CN 207881842 U CN207881842 U CN 207881842U
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 52
- 238000001931 thermography Methods 0.000 title claims abstract description 31
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 22
- 238000005516 engineering process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000012806 monitoring device Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 238000003860 storage Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
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Abstract
The utility model relates to a prediction early warning automatic alarm based on lithium ion battery group thermal runaway, especially a lithium ion battery group thermal runaway automatic alarm based on infrared thermal imaging technique carries out temperature alarm to the thermal runaway in warehouse storage, the charging process, carries out on-line monitoring and timely early warning to lithium ion battery group through online infrared thermal imager. Comprises a monitoring device part, a control part, an alarm device part and an auxiliary device part; the monitoring device part adopts an infrared thermal imager; the auxiliary device comprises a relay; the control part comprises a computer and a computer display, the computer display is connected with the computer, and a program module is arranged in the computer; the monitoring device part, the alarming device part and the auxiliary device part are respectively connected with the control part through USB interfaces. The utility model has the advantages of real-time on-line monitoring, response time are rapid, easy operation etc.
Description
Technical field
The utility model is related to a kind of prediction and warning autoalarm based on Li-ion batteries piles thermal runaway, especially one
Li-ion batteries piles thermal runaway autoalarm of the kind based on infrared thermal imaging technique, to the heat in warehouse storage, charging process
Carry out temperature alarming out of control, monitors Li-ion batteries piles on-line by online infrared thermography and timely early warning.
Background technology
Lithium ion battery has the features such as, long lifespan higher than energy, specific power is big and at low cost, is widely used in hand
The small-sized electronic products such as machine, laptop, and shown on the new energy vehicles such as electric vehicle, hybrid vehicle
Extensive foreground.In recent years combustion explosion accident occurs in charge and discharge process and in storage and transportation process for lithium ion battery,
Cause the example of casualties economic loss commonplace.On May 31st, 2016 one lithium ion battery public affairs of Jiangsu Province's Qidong City
It takes charge of warehouse and fire explosion occurs.Samsung Galaxy Note7 cause mobile phone that fire occurs quick-fried due to the safety problem of battery
Fried accident, this serial mobile phone are recalled.The safety issue of lithium ion battery becomes focus again.Therefore, to lithium ion battery into
Trip temperature monitors and early warning, the thermal runaway for preventing lithium ion battery are of great significance.
With the continuous development of battery technology, large capacity, high density battery occurs and the development of rapid nitriding, people
Often there are charge and discharge, fast charging and discharging, short circuit, mechanical abuse conditions and high temperature thermal shocking etc. when using lithium ion battery
The unsafe acts of situation.These unsafe acts are extremely easy the dangerous side reaction of triggering inside battery and generate heat,
Cause thermal runaway, leads to the generation of fire explosion.
Utility model content
The utility model aim is that place provides a kind of lithium-ion electric based on infrared thermal imaging technique against the above deficiency
Pond group thermal runaway autoalarm is a kind of the pre- of the real time on-line monitoring Li-ion batteries piles thermal runaway based on infrared thermal imaging
Early warning autoalarm is surveyed, real time on-line monitoring early warning is carried out to Li-ion batteries piles, can be that lithium ion battery is being used, stored up
Safer environment is provided during depositing.Before thermal runaway occurs for Li-ion batteries piles, adopts an effective measure, avoid causing
Casualties, property loss.Help to provide important value and social effect for the further development of lithium ion battery.
The utility model takes following technical scheme to realize：
Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique includes monitoring device part, control
Partly, warning device part and auxiliary device part；Monitoring device part uses infrared thermography；Auxiliary device includes relay
Device；Control section includes computer and computer display, and computer display is connected with computer, and journey is equipped in computer
Sequence module；Monitoring device part, warning device part and auxiliary device part are connected by USB interface with control section respectively.
The warning device part is made of blue led indicator light, red LED alarm lamp and buzzer.
For the thermal infrared imager at least provided with 2, it is diagonal that 2 thermal infrared imagers are located at monitored battery case
On the perpendicular bisector of line, the angle between body diagonal 70mm, with side where tested battery case diagonal line vertex is
30°。
The control section real-time online shows the infrared thermal imaging image in each face of battery pack, and analyzes its maximum temperature
And the position at place.
When utility model works, monitored battery pack is placed as cuboid, and maked somebody a mere figurehead, monitoring device part is real
When on-line monitoring, acquisition be monitored battery pack temperature information and infrared image, and by collected temperature information and infrared image
Control device, control device displays temperature information and infrared image are fed back to, while sending control signal and giving warning device part
With auxiliary device part.
The prediction and warning automatic alarm side of Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique
Method includes the following steps：
1）Install monitoring device part；
The visible angle of the infrared thermography of monitoring device part is set as 80 °, at least provided with it is two infrared heat at
As instrument, when work, each thermal infrared imager covering was monitored 3 faces of battery pack；Monitored battery pack is set to be all covered,
It need to only ensure that the body diagonal of battery pack is capped；
2）Monitored battery pack is maked somebody a mere figurehead with holder, overhead height 100mm-150mm；
3）Thermal infrared imager obtain battery pack infrared image after, by image Real-time Feedback to computer, and by computer into
Row analysis, obtains the maximum temperature in image and its position at place, analysis result and original image, which are transmitted to computer, to be shown
Show and shown on device, while maximum temperature being compared with alarm temperature, warning device is sent instructions to by computer.
Step 3）The method that middle maximum temperature is compared with alarm temperature, includes the following steps：
3-1）When the maximum temperature that thermal infrared imager obtains is less than 60 DEG C, it is normal operating conditions, meter to be monitored battery
Calculation machine sends out instruction to warning device part, and the blue led indicator light of warning device part lights at this time；
3-2）When the maximum temperature that thermal infrared imager obtains is more than or equal to 60 DEG C and is less than 80 DEG C, monitored battery pack reaches
To level-one alert status, computer sends out instruction to warning device part, and the blue led indicator light of warning device part is put out at this time
It goes out, red LED alarm lamp lights, and reminds staff to be monitored battery pack and comes into level-one thermal runaway state, reply is supervised
It surveys battery pack to be handled, fire explosion occurs to prevent thermal runaway state from aggravating；
3-3）When the maximum temperature that thermal infrared imager obtains is more than 80 DEG C, monitored battery pack reaches two level early warning shape
State, computer send out instruction to warning device part, and the red LED alarm lamp of warning device part lights at this time, buzzer work
Make, sends out lasting sound；Simultaneous computer sends out instruction to auxiliary device part, cuts off the work electricity for being monitored battery pack
Road, and battery backup circuit is enabled, remind staff to carry out preservation data in time to the device where being monitored battery pack
And normal switching-off work, and the monitored battery pack of thermal runaway is handled.
Li-ion batteries piles thermal runaway autoalarm of the utility model based on infrared thermal imaging technique, which is used as, is directed to lithium
Thermal runaway prior-warning device of the ion battery group in charge and discharge process, have the advantages that it is easy to operate, it is real-time monitoring, postpone it is low,
Early warning can be carried out to the thermal runaway of battery pack and is automatically cut off.Real-time online prison is carried out in charge and discharge process to lithium ion battery
It surveys, the thermal runaway of Li-ion batteries piles is given warning in advance and automatically cut off, prevents Li-ion batteries piles in charging process
Thermal runaway occurs, causes lithium ion battery that fire explosion occurs, causes casualties and property loss, provided for personnel and equipment
One safer environment.It greatly ensure that reliability and safety of the Li-ion batteries piles in charge and discharge process, reduce
The possibility of fire explosion occurs because of thermal runaway for Li-ion batteries piles.
Description of the drawings
Below with reference to attached drawing, the utility model is described in further detail：
Fig. 1 is the structural schematic diagram of the Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique；
Fig. 2 is the monitoring state signal of the Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique
Figure.
In figure：1, it is monitored battery pack, 2, infrared thermography I, 3, infrared thermography II, 4, battery backup, 5,
Auxiliary device part, 6, computer, 7, machinery equipment, 8, warning device part.
Specific implementation mode
With reference to attached drawing 1,2, the Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique includes monitoring
Device part, control section, warning device part 8 and auxiliary device part 5；Monitoring device part uses infrared thermography；
Auxiliary device includes relay；Control section includes computer 6 and computer display, computer display and computer phase 6
Even, program module is equipped in computer 6；Monitoring device part, warning device part 8 and auxiliary device part 5 pass through respectively
USB interface is connected with control section.
The warning device part is made of blue led indicator light, red LED alarm lamp and buzzer.
For the thermal infrared imager at least provided with 2, it is diagonal that 2 thermal infrared imagers are located at monitored battery case
On the perpendicular bisector of line, apart from body diagonal 70mm, the faces the c angle with monitored battery pack 1 is 30 °.
The control section real-time online shows the infrared thermal imaging image in each face of battery pack, and analyzes its maximum temperature
And the position at place.
Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique, is the reality based on infrared thermal imaging
When on-line monitoring Li-ion batteries piles thermal runaway prediction and warning autoalarm work when, by thermal infrared imager shooting supervised
The infrared image of battery pack is surveyed, and image is transmitted to calculating 6 by USB interface, is analyzed and is judged by computer 6, root
According to the temperature threshold of setting, the blue led indicator light, red LED alarm lamp and buzzer of alarm is driven to act, and will be infrared
Image and temperature data are transmitted on computer display.The algnment accuracy that thermal infrared imager provides within the scope of room temperature is ± 2
DEG C, the maximum temperature on 1 surface of battery pack and its position at place are calculated by computer 6.
1）Install monitoring device part；
The visible angle of the infrared thermography of monitoring device part is set as 80 °, at least provided with it is two infrared heat at
As instrument, when work, each thermal infrared imager covering was monitored 3 faces of battery pack 1；Monitored battery pack 1 is set all to be covered
Lid need to only ensure that the body diagonal of battery pack 1 is capped；
By taking the battery pack of 3 18650 type lithium ion batteries composition as an example, body diagonal length is 86.4mm, infrared heat
As instrument visible angle is 80 °.It being computed, thermal infrared imager is 51.5mm with the cornerwise minimum range of battery case, takes 70mm,
It it is 30 ° with the faces C angle on the cornerwise perpendicular bisector of battery case.An infrared thermal imagery is respectively arranged in the both sides of battery pack 1
Instrument, thermal infrared imager I 2 are used to monitor the face a, b, c of battery pack 1, and thermal infrared imager II 3 is used to monitor d, e, f of battery pack 1
Face.
2）Monitored battery pack is maked somebody a mere figurehead with holder, overhead height 100mm-150mm；
3）After thermal infrared imager obtains the infrared image of battery pack 1, by image Real-time Feedback to computer 6, and by calculating
Machine software module is analyzed, and the maximum temperature in image and its position at place are obtained, and analysis result and original image are passed
It is sent on computer display and is shown, while maximum temperature being compared with alarm temperature, sent and instructed by computer 6
To warning device part 8.
Step 3）The method that middle maximum temperature is compared with alarm temperature, includes the following steps：
3-1）When the maximum temperature that thermal infrared imager obtains is less than 60 DEG C, it is normal operating conditions, meter to be monitored battery
Calculation machine 6 sends out instruction to warning device part 8, and the blue led indicator light of warning device part 8 lights at this time；
3-2）When the maximum temperature that thermal infrared imager obtains is more than or equal to 60 DEG C and is less than 80 DEG C, it is monitored battery pack 1
Reach level-one alert status, computer 6 sends out instruction to warning device part 8, and the blue led of warning device part 8 refers at this time
Show that lamp extinguishes, red LED alarm lamp lights, and reminds staff to be monitored battery pack 1 and comes into level-one thermal runaway state, answers
Monitored battery pack 1 is handled, fire explosion occurs to prevent thermal runaway state from aggravating；
3-3）When the maximum temperature that thermal infrared imager obtains is more than 80 DEG C, monitored battery pack 1 reaches two level early warning shape
State, computer 6 send out instruction to warning device part 8, and the red LED alarm lamp of warning device part 8 lights at this time, buzzer
Work, sends out lasting sound；Simultaneous computer 6 sends out instruction to auxiliary device part 5, cuts off the work for being monitored battery pack 1
Make circuit, and enable the circuit of battery backup 4, staff is reminded to carry out the device where being monitored battery pack 1 in time
Data and normal switching-off work are preserved, and the monitored battery pack 1 of thermal runaway is handled.
Li-ion batteries piles thermal runaway autoalarm of the utility model based on infrared thermal imaging technique is directed to 18650 types
Thermal runaway of the Li-ion batteries piles in charge and discharge process is monitored and early warning, is mountable to the charging of lithium ion battery, puts
The places such as electricity and storage, provide real time temperature parameter, by each face of battery pack for the Li-ion batteries piles under different places
Temperature parameter analyzed, early warning and cut-out are carried out in time when surface temperature reaches certain threshold value, so that staff adopts
Effective measures are taken, prevent thermal runaway from aggravating and generating combustion explosion accident.
Embodiment 1：
In use, two infrared thermographies are respectively arranged on the perpendicular bisector of Li-ion batteries piles body diagonal, away from
The faces C angle from monitored battery case diagonal line 70mm thermal imaging systems normal direction and battery 1 is 30 °, and body diagonal both sides are each
One infrared thermography is set.
It is now assumed that certain 18650 type Li-ion batteries piles carries out exoelectrical reaction, current temperature in thermal infrared imager monitoring range
Degree is abnormal, and method for early warning includes the following steps：
1）After thermal infrared imager obtains battery pack infrared image, by image Real-time Feedback to computer 6, and it is soft by computer
Part module is analyzed, and the maximum temperature in image and its position at place are obtained, by analysis result and original image include
On computer display, while maximum temperature being compared with alarm temperature, warning device portion is sent instructions to by computer 6
Divide 8.
2）If the maximum temperature that thermal infrared imager obtains is less than 60 DEG C, it is normal operating conditions to be monitored battery, is calculated
Machine 6 sends out instruction to warning device part 8, and the blue led indicator light of warning device part lights at this time.
3）If the maximum temperature that thermal infrared imager obtains is more than or equal to 60 DEG C and is less than 80 DEG C, monitored battery pack 1 reaches
To level-one alert status, computer sends out instruction to warning device part 8, at this time the blue led indicator light of warning device part 8
Extinguish, red LED alarm lamp lights, and staff's battery pack 1 is reminded to come into level-one thermal runaway state, copes with battery pack 1
It is handled, fire explosion occurs to prevent thermal runaway state from aggravating.
4）If the maximum temperature that thermal infrared imager obtains is more than 80 DEG C, monitored battery pack 1 reaches two level alert status.
Computer 6 sends out instruction to warning device part 8, and the red LED alarm lamp of warning device part lights at this time, buzzer work
Make, sends out lasting sound.Simultaneous computer 6 sends out instruction to auxiliary device part 5, cuts off the operating circuit of battery pack 1, and
The circuit of battery backup 4 is enabled, staff is reminded to carry out preserving data in time to the device where battery pack 1 and normally close
Work is closed, and the battery pack of thermal runaway 1 is handled.
In the example of the utility model, thermal infrared imager selects the online infrared heat of PI200 of SENSYSTEM companies production
As instrument, buzzer uses commercially available buzzer；Blue led indicator light and red LED alarm lamp are all made of commercially available LED light.
The utility model has real-time as thermal runaway warning device of the lithium ion battery in charge and discharge process is directed to
It monitors on-line, the response time is rapid, simple operation and other advantages.The utility model is mainly used for the charge and discharge of Li-ion batteries piles
Cheng Zhong carries out real time on-line monitoring to lithium ion battery in charge and discharge process, prevents Li-ion batteries piles in charging process
Thermal runaway occurs, causes lithium ion battery that fire explosion occurs, causes casualties and property loss.Therefore, the utility model
Using online thermal infrared imager to Li-ion batteries piles carry out real time on-line monitoring, to for lithium ion battery in charge and discharge
Higher safety is provided in journey.
Claims (3)
1. a kind of Li-ion batteries piles thermal runaway autoalarm based on infrared thermal imaging technique, it is characterised in that：Including prison
Survey device part, control section, warning device part and auxiliary device part；Monitoring device part uses infrared thermography；
Auxiliary device includes relay；Control section includes computer and computer display, and computer display is connected with computer,
Program module is equipped in computer；Monitoring device part, warning device part and auxiliary device part pass through USB interface respectively
It is connected with control section.
2. the Li-ion batteries piles thermal runaway autoalarm according to claim 1 based on infrared thermal imaging technique,
It is characterized in that：The warning device part is made of blue led indicator light, red LED alarm lamp and buzzer.
3. the Li-ion batteries piles thermal runaway autoalarm according to claim 1 based on infrared thermal imaging technique,
It is characterized in that：For the thermal infrared imager at least provided with 2,2 thermal infrared imagers are located at monitored battery case pair
On the perpendicular bisector of linea angulata, the angle between body diagonal 70mm, with side where tested battery case diagonal line vertex is
30°。
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| CN201820357912.8U CN207881842U (en) | 2018-03-16 | 2018-03-16 | Lithium ion battery pack thermal runaway automatic alarm based on infrared thermal imaging technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108332860A (en) * | 2018-03-16 | 2018-07-27 | 南京工业大学 | Lithium ion battery pack thermal runaway automatic monitoring method based on infrared thermal imaging technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332860A (en) * | 2018-03-16 | 2018-07-27 | 南京工业大学 | Lithium ion battery pack thermal runaway automatic monitoring method based on infrared thermal imaging technology |
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