CN106706756A - Device and method for detecting safety of lithium ion battery for electric bicycle - Google Patents

Device and method for detecting safety of lithium ion battery for electric bicycle Download PDF

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Publication number
CN106706756A
CN106706756A CN201710075492.4A CN201710075492A CN106706756A CN 106706756 A CN106706756 A CN 106706756A CN 201710075492 A CN201710075492 A CN 201710075492A CN 106706756 A CN106706756 A CN 106706756A
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battery
detection
temperature
lithium ion
ion battery
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于燕燕
丁宇
王晨光
李涛
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Technical Center For Safety Of Industrial Products Of Tianjin Entry-Exit Inspection & Quarantine
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Technical Center For Safety Of Industrial Products Of Tianjin Entry-Exit Inspection & Quarantine
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/389Measuring internal impedance, internal conductance or related variables
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04Analysing solids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285Testing apparatus
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Abstract

The invention relates to a device and a method for detecting the safety of a lithium ion battery for an electric bicycle. The device comprises an anti-explosion box body 3, a base 2, a charging device 16, a discharging device 17, an ultrasonic probe 4, a heating device 15, a second temperature sensor 8, a camera 5, an air inlet hole 6, an air outlet hole 7, and the like, and can detect the safety parameters such as lithium analysis, deformation and ignition point. After the device and the method are used, multiple safety performance parameters of the battery are detected and evaluated at a time, so that not only is the technology blank of the safety performance detection of the lithium ion battery for the electric bicycle made up, but the detection efficiency is also effectively improved.

Description

A kind of automobile-used lithium ion battery safety detection device of electrical salf-walking and method
Technical field
The invention belongs to battery detecting field, more particularly to a kind of automobile-used lithium ion battery safety detection device of electrical salf-walking And method.
Background technology
Lithium ion battery is considered as performance rechargeable battery the most superior, the title for having " ultimate battery ".Although industry Change only have more than ten years time, market for lithium ion battery great demand, and human and material resources, financial resources extensive throwing Enter, guiding the sector gradually goes strong, and makes it possible application of the lithium ion battery in electric bicycle.
The automobile-used lithium ion battery of electrical salf-walking, is a kind of battery system of new development in recent years and commercialization, and it substitutes lead Acid accumulator has turned into inexorable trend as electric bicycle power.Lithium-ion-power cell have operating voltage high, small volume, It is lightweight, the good characteristic such as specific energy is high, have extended cycle life, quick charge.These features can be solved in electric bicycle design Bottleneck problem, combination property is greatly improved.At present, lithium-ion-power cell cost is also higher, accounts for the 1/3 of integral vehicle cost To 1/2, the proportion much larger than lead-acid battery in integral vehicle cost.But it is with advances in technology and ripe, on electric bicycle It is the trend of following Development of E-bike using lithium battery.
The automobile-used lithium ion battery of electrical salf-walking, while possessing many merits, because specific energy is high, stability of material phase To difference, safety problem also becomes increasingly conspicuous.The weight of the automobile-used lithium ion battery of electrical salf-walking is about 4 kilograms, bigger than battery of mobile phone by 100 Many times, the energy of storage also accordingly increases hundreds of times, and the increase of energy also implies that greatly improving for danger.Meanwhile, lithium from Had differences between the cell of sub- battery pack, during charging, percentage of batteries is overcharged, percentage of batteries underfill electricity, portion during electric discharge Battery is divided not to be discharged, part is then crossed and put, and vicious circle, battery is susceptible to danger.Meanwhile, because the automobile-used lithium of electrical salf-walking The particularity of ion battery use environment, more extrudes, acupuncture, immersion situations such as, have particular/special requirement to its performance. Bicycle use lithium ion battery is researched and developed and when using, blast and combustion incident once repeatedly occurs, the event of battery spontaneous combustion is also multiple Occur.
With fast-developing, the popularization of bicycle use lithium ion battery, commercialization has become inevitable trend.Urgent need is opened Exhibition associated safety performance technical research, is that China's relevant laws and regulations formulate and implement supports that provide the necessary technical, with guarantee Battery product is produced and uses safety.The security performance of bicycle use lithium ion battery detects the research of key technology, will promote China's battery health, develop in an orderly manner, while also for reply foreign technology trade barrier provide strong science and technology support.Especially It is, at this stage, to grasp first chance, is taken the initiative, and just can guarantee that comprehensive commercialization of the China in bicycle use lithium ion battery In period, established oneself in an unassailable position in World Battery trade.
Because China starts late in the research of battery product secure context, the automobile-used lithium battery of electrical salf-walking is to research and develop in recent years With a battery system of commercialization.Although also having formulated some standards, detection architecture is still far from perfect, and correlation technique falls Afterwards, instrument and equipment lacks, and the implementation for being difficult to China's relevant laws and regulations provides strong technical support.At present, detect main Foundation:IEC 62133《Secondary cell and the safety requirements of battery containing alkalescence or non-acidic electrolyte liquid》, QBT_ 2947.3-2008《Electric bicycle battery and charger _ part 1:Lithium-ions battery and charger》, but it is several above Individual standard and regulation are mainly for portable lithium battery or primarily focus on the performance requirement of battery, it is impossible to meet electric bicycle With the safety detection requirement of lithium-ion-power cell.
At present, it is that inside is the hierarchical structure of multilayer repetition the characteristics of the commercial li-ion battery of large-scale use, makes Have many reason for cell decay during, including material degradation, concentration of electrolyte change, diaphragm failures etc., but it is common It is that thickness, the body of the hierarchical structures such as electrode, barrier film is changed, is produced as crackle and defect, the simultaneous surface of solids The generations of boundary layer such as dielectric film (SEI) and clear up, therefore, the analysis for cell performance decay should be paid close attention in battery The multi-level structure such as portion's electrode, barrier film, SEI thickness and metamorphosis.
The content of the invention
In order to solve defect present in prior art, the present invention provides a kind of peace of the automobile-used lithium ion battery of electrical salf-walking Full inspection survey device and method, disposably realize the multinomial security performance parameter of battery detection, assessment, not only compensate for it is electronic from The technological gap that driving is detected with lithium ion battery safety performance, and effectively improve detection efficiency.
First technical scheme of the invention provides a kind of safety detection device of the automobile-used lithium ion battery of electrical salf-walking, should Device includes such as lower component:
Deformation and internal inspection system:Anti-explosion box body 3, base 2, charging device 16, electric discharge device 17, ultrasonic probe 4, plus Thermal 15, second temperature sensor 8, video camera 5, air admission hole 6, venthole 7;
The base 2 is manufactured by high-temperature alloy, is arranged on the bottom of anti-explosion box body 3, and is provided with slide rail 13, and two are set on slide rail 13 The dismountable clamping plate 11 of block, the clamping plate 11 is arranged on the tested both sides of battery 1, and can be slided on base 2 and fixed;
The clamping plate 11 is respectively provided with the first temperature sensor 23 and deformation detection piece 18, the first temperature sensor 23 by circuit with The temperature data processing module connection of control system, and by display displays temperature, deformation detection piece is on battery side It is provided with multiple detection temperature sensors 23 of contact 22 and first, opposite side is provided with positive outside wire 19, negative outside wire 20 and the One temperature sensor scheme 21, the detection contact 22 connects the deformation data of control system by positive and negative electrode lead-out wire 19,20 Processing module, and deformation is shown by display;
The ultrasonic probe 4 is arranged on the middle part of the top layer of anti-explosion box body 3, and by cable component(It is not drawn into Fig. 1)And shifting Dynamic terminal 24 is connected, and the cable component includes ultrasonic wave transmitting and receiving module, measuring circuit, power supply circuit and the control of electrical connection Circuit processed, the cable component is connected by 3.5mm audio heads with mobile terminal;The ultrasonic probe direction is adjustable, and its is right The inside battery electrode of quasi- battery.
The anti-explosion box body 3 also sets up cabinet door 12, and handle 14 is set on door;
Charging socket 9 and electric discharge socket 10 are provided with the relative side side wall of the anti-explosion box body door, respectively with the charging Device 16 and electric discharge device 17 are connected;Multiple second temperature sensors 8 are also uniformly arranged on the side wall;
The bottom of the anti-explosion box body 3, the bottom of base 2 are provided with heater 15;
Video camera 5 is also set up in the middle part of the top layer of the anti-explosion box body 3, view data is transported to image real time transfer by video camera 5 Module, and show over the display, so as to realize real-time monitoring anti-explosion box body internal cell situation;
The air inlet 6 and gas outlet 7 are separately positioned on the both sides of the top layer of anti-explosion box body 3.
The heater is electric heater unit.
Second technical scheme of the invention provides a kind of safety detection method of the automobile-used lithium ion battery of electrical salf-walking, the party Method uses said apparatus;Specifically include following operation:
(One)Analysis lithium detection
Battery is placed on base, clamping plate is installed on the siding track of battery two, adjustment two clamping plates position makes clamping plate clamp electricity Pond;
The charge and discharge circuit of battery is connected into charging socket 9 and electric discharge socket 10 respectively;Ultrasonic probe 4 is opened, adjustment is described Ultrasonic probe direction is adjustable, the inside battery electrode of its alignment battery;
At different temperatures, charge and discharge electric treatment is carried out to lithium ion battery using different charge-discharge magnifications, including:
A 0.3C chargings) are carried out at 0 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
B 0.7C chargings) are carried out at 10 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
C 1.2C chargings) are carried out at 20 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
D 1.8C chargings) are carried out at 30 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
Change according to ultrasonic signal is analyzed and explores inside battery different levels structure change, including thickness, body hair Changing, it is produced as crackle and defect;
After analysis lithium detection terminates, ultrasonic probe is closed, pull up the charge and discharge electric line of battery;
(Two)Deformation detection
Continue to rise high-temperature, the deformation detection piece 18 set using clamping plate 11 detects the deformation of battery, and the clamping plate 11 is also First temperature sensor 23 is set, and the first temperature sensor 23 is connected by circuit with the temperature data processing module of control system Connect, and by display displays temperature, deformation detection piece is provided with multiple detection temperature of contact 22 and first near battery side Sensor 23, opposite side is provided with positive outside wire 19, the temperature sensor scheme 21 of negative outside wire 20 and first, and the detection is touched Point 22 connects the deformation data processing module of control system by positive and negative electrode lead-out wire 19,20, and shows deformation by display Situation;Cell deformation-temperature curve is formed, to detect the safe handling temperature of lithium ion battery;
(Three)Combustion supervision
After deformation detection terminates, clamping plate 11 is taken out from base 2, continue to add lithium ion battery using heater 15 Heat, to open and also set up video camera 5, air inlet 6 and gas outlet 7 in the middle part of the top layer of anti-explosion box body 3, and be passed through sky in air inlet Gas;With the continuous rising of lithium ion battery temperature, be transported to the view data of lithium ion battery at view data by video camera 5 Reason module, and show over the display, so as to realize real-time monitoring anti-explosion box body internal cell situation, it is arranged on explosion-proof tank side Real time temperature in casing is sent to image data processing module by the second temperature sensor 8 of wall, is shown with reference to display Image detection determines the burning-point of lithium ion battery, and then determines the anti-flaming safe temperature of battery;
(Four)Search report
By above-mentioned data output, the examining report of lithium ion battery is obtained.
Above-mentioned steps(One)In, the step A), B), C), D) without order limit.
The step(Three)In, air is passed through box house by hair-dryer.
The present invention has advantages below:
1st, while detecting the multinomial safety index of lithium ion battery, detection efficiency is improve, has saved detection funds;
2nd, structure of the detecting device is simple, security performance is high;
3rd, using ultrasound examination inside battery structure, battery internal layer knot accurately can be judged in the case where battery is not destroyed The change of structure;
4th, using homemade clamping plate, the accuracy of deformation detection is improve, while the setting slide rail of creativeness, effectively improves clamping plate Recycling degree, reduce testing cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the safety detection device of the automobile-used lithium ion battery of electrical salf-walking of the present invention;
Wherein, battery 1, base 2, anti-explosion box body 3, ultrasonic probe 4, video camera 5, air admission hole 6, venthole 7, the second temperature are tested Degree sensor 8, charging socket 9, discharge socket 10, clamping plate 11, cabinet door 12, slide rail 13, handle 14, and heater 15 charges Device 16, electric discharge device 17, deformation detection piece 18, positive outside wire 19, negative outside wire 20, the first temperature sensor scheme 21, deformation detection contact 22, the first temperature sensor 23, mobile terminal 24.
Fig. 2 is clamping plate schematic diagram of the present invention;
Fig. 3 is ultrasonic probe handling process schematic diagram of the present invention;
Fig. 4 is temperature of the present invention, deformation, image real time transfer schematic flow sheet.
Specific embodiment
Second technical scheme of the invention provides a kind of safety detection method of the automobile-used lithium ion battery of electrical salf-walking, the party Method uses said apparatus;Specifically include following operation:
(One)Analysis lithium detection
Battery is placed on base, clamping plate is installed on the siding track of battery two, adjustment two clamping plates position makes clamping plate clamp electricity Pond;
The charge and discharge circuit of battery is connected into charging socket 9 and electric discharge socket 10 respectively;Ultrasonic probe 4 is opened, adjustment is described Ultrasonic probe direction is adjustable, the inside battery electrode of its alignment battery;
At different temperatures, charge and discharge electric treatment is carried out to lithium ion battery using different charge-discharge magnifications, including:
A 0.3C chargings) are carried out at 0 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
B 0.7C chargings) are carried out at 10 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
C 1.2C chargings) are carried out at 20 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
D 1.8C chargings) are carried out at 30 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
The step A), B), C), D) without order limit;
Change according to ultrasonic signal is analyzed and explores inside battery different levels structure change, including thickness, body hair Changing, it is produced as crackle and defect;
After analysis lithium detection terminates, ultrasonic probe is closed, pull up the charge and discharge electric line of battery;
(Two)Deformation detection
Continue to rise high-temperature, the deformation detection piece 22 set using clamping plate 11 detects the deformation of battery, and the clamping plate 11 is also First temperature sensor 23 is set, and the first temperature sensor 23 is connected by circuit with the temperature data processing module of control system Connect, and by display displays temperature, deformation detection piece is provided with multiple detection temperature of contact 22 and first near battery side Sensor 23, opposite side is provided with positive outside wire 19, the temperature sensor scheme 21 of negative outside wire 20 and first, and the detection is touched Point 22 connects the deformation data processing module of control system by positive and negative electrode lead-out wire 19,20, and shows deformation by display Situation;Cell deformation-temperature curve is formed, to detect the safe handling temperature of lithium ion battery;
(Three)Combustion supervision
After deformation detection terminates, clamping plate 11 is taken out from base 2, continue to add lithium ion battery using heater 15 Heat, to open and also set up video camera 5, air inlet 6 and gas outlet 7 in the middle part of the top layer of anti-explosion box body 3, and be passed through sky in air inlet Gas;With the continuous rising of lithium ion battery temperature, be transported to the view data of lithium ion battery at view data by video camera 5 Reason module, and show over the display, so as to realize real-time monitoring anti-explosion box body internal cell situation, it is arranged on explosion-proof tank side Real time temperature in casing is sent to image data processing module by the second temperature sensor 8 of wall, is shown with reference to display Image detection determines the burning-point of lithium ion battery, and then determines the anti-flaming safe temperature of battery;
(Four)Examining report
By above-mentioned data output, the examining report of lithium ion battery is obtained.
Embodiment 1
Detection object is certain brand lithium ion battery for electric bicycle, according to step(One)Detection analysis lithium situation, in different temperatures Under, charge and discharge electric treatment is carried out to lithium ion battery using different charge-discharge magnifications, including:
A 0.3C chargings) are carried out at 0 DEG C, 0.5C electric discharges are circulated 10 times, and analysis lithium detection is carried out to battery;
B 0.7C chargings) are carried out at 10 DEG C, 0.5C electric discharges are circulated 10 times, and analysis lithium detection is carried out to battery;
C 1.2C chargings) are carried out at 20 DEG C, 0.5C electric discharges are circulated 10 times, and analysis lithium detection is carried out to battery;
D 1.8C chargings) are carried out at 30 DEG C, 0.5C electric discharges are circulated 10 times, and analysis lithium detection is carried out to battery;
According to testing result it is expected that the cell safety discharge and recharge number of times is about 2100 times;
According to step(Two)Deformation detection is carried out, detection data is formed into cell deformation-temperature curve, can be with according to Dependence Results It is determined that, 54 DEG C of the safe handling temperature of the battery;
According to step(Three)Combustion supervision is carried out, after testing, the burning-point of the battery is 135 DEG C.
Form examining report.

Claims (5)

1. the safety detection device of the automobile-used lithium ion battery of a kind of electrical salf-walking, it is characterised in that the device includes such as lower component:
Anti-explosion box body 3, base 2, charging device 16, electric discharge device 17, ultrasonic probe 4, heater 15, second temperature sensing Device 8, video camera 5, air admission hole 6, venthole 7;
The base 2 is manufactured by high-temperature alloy, is arranged on the bottom of anti-explosion box body 3, and is provided with slide rail 13, and two are set on slide rail 13 The dismountable clamping plate 11 of block, the clamping plate 11 is arranged on the tested both sides of battery 1, and can be slided on base 2 and fixed;
The clamping plate 11 is respectively provided with the first temperature sensor 23 and deformation detection piece 18, the first temperature sensor 23 by circuit with The temperature data processing module connection of control system, and by display displays temperature, deformation detection piece is on battery side It is provided with multiple detection temperature sensors 23 of contact 22 and first, opposite side is provided with positive outside wire 19, negative outside wire 20 and the One temperature sensor scheme 21, the detection contact 22 connects the deformation data of control system by positive and negative electrode lead-out wire 19,20 Processing module, and deformation is shown by display;
The ultrasonic probe 4 is arranged on the middle part of the top layer of anti-explosion box body 3, and by cable component(It is not drawn into Fig. 1)And shifting Dynamic terminal 24 is connected, and the cable component includes ultrasonic wave transmitting and receiving module, measuring circuit, power supply circuit and the control of electrical connection Circuit processed, the cable component is connected by 3.5mm audio heads with mobile terminal;The ultrasonic probe direction is adjustable, and its is right The inside battery electrode of quasi- battery;
The anti-explosion box body 3 also sets up cabinet door 12, and handle 14 is set on door;
Charging socket 9 and electric discharge socket 10 are provided with the relative side side wall of the anti-explosion box body door, respectively with the charging Device 16 and electric discharge device 17 are connected;Multiple second temperature sensors 8 are also uniformly arranged on the side wall;
The bottom of the anti-explosion box body 3, the bottom of base 2 are provided with heater 15;
Video camera 5 is also set up in the middle part of the top layer of the anti-explosion box body 3, view data is transported to image real time transfer by video camera 5 Module, and show over the display, so as to realize real-time monitoring anti-explosion box body internal cell situation;
The air inlet 6 and gas outlet 7 are separately positioned on the both sides of the top layer of anti-explosion box body 3.
2. the safety detection device of the automobile-used lithium ion battery of electrical salf-walking as claimed in claim 1, it is characterised in that it is described plus Hot charging is set to electric heater unit.
3. a kind of usage right requires the detection side of the safety detection device of the automobile-used lithium ion battery of electrical salf-walking described in 1 or 2 Method, it is characterised in that specifically include following operation:
(One)Analysis lithium detection
Battery is placed on base, clamping plate is installed on the siding track of battery two, adjustment two clamping plates position makes clamping plate clamp electricity Pond;
The charge and discharge circuit of battery is connected into charging socket 9 and electric discharge socket 10 respectively;Ultrasonic probe 4 is opened, adjustment is described Ultrasonic probe direction is adjustable, the inside battery electrode of its alignment battery;
At different temperatures, charge and discharge electric treatment is carried out to lithium ion battery using different charge-discharge magnifications, including:
A 0.3C chargings) are carried out at 0 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
B 0.7C chargings) are carried out at 10 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
C 1.2C chargings) are carried out at 20 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
D 1.8C chargings) are carried out at 30 DEG C, 0.5C electric discharges are circulated 3~20 times, and analysis lithium detection is carried out to battery;
Change according to ultrasonic signal is analyzed and explores inside battery different levels structure change, including thickness, body hair Changing, it is produced as crackle and defect;
After analysis lithium detection terminates, ultrasonic probe is closed, pull up the charge and discharge electric line of battery;
(Two)Deformation detection
Continue to rise high-temperature, the deformation detection piece 22 set using clamping plate 11 detects the deformation of battery, and the clamping plate 11 is also First temperature sensor 23 is set, and the first temperature sensor 23 is connected by circuit with the temperature data processing module of control system Connect, and by display displays temperature, deformation detection piece is provided with multiple detection temperature of contact 22 and first near battery side Sensor 23, opposite side is provided with positive outside wire 19, the temperature sensor scheme 21 of negative outside wire 20 and first, and the detection is touched Point 22 connects the deformation data processing module of control system by positive and negative electrode lead-out wire 19,20, and shows deformation by display Situation;Cell deformation-temperature curve is formed, to detect the safe handling temperature of lithium ion battery;
(Three)Combustion supervision
After deformation detection terminates, clamping plate 11 is taken out from base 2, continue to add lithium ion battery using heater 15 Heat, to open and also set up video camera 5, air inlet 6 and gas outlet 7 in the middle part of the top layer of anti-explosion box body 3, and be passed through sky in air inlet Gas;With the continuous rising of lithium ion battery temperature, be transported to the view data of lithium ion battery at view data by video camera 5 Reason module, and show over the display, so as to realize real-time monitoring anti-explosion box body internal cell situation, it is arranged on explosion-proof tank side Real time temperature in casing is sent to image data processing module by the second temperature sensor 8 of wall, is shown with reference to display Image detection determines the burning-point of lithium ion battery, and then determines the anti-flaming safe temperature of battery;
(Four)Examining report
By above-mentioned data output, the examining report of lithium ion battery is obtained.
4. detection method as claimed in claim 3, it is characterised in that step(One)In, the step A), B), C), D) do not have Order is limited.
5. detection method as claimed in claim 3, it is characterised in that step(Three)In, air is passed through casing by hair-dryer It is internal.
CN201710075492.4A 2017-02-13 2017-02-13 Device and method for detecting safety of lithium ion battery for electric bicycle Pending CN106706756A (en)

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CN108646195A (en) * 2018-07-03 2018-10-12 东莞百瑞自动化有限公司 A kind of battery simulation simulation test machine and its control method
CN108663273A (en) * 2018-04-11 2018-10-16 上海空间电源研究所 Measure the test method of lithium ion battery mechanical deformation stress
CN108963356A (en) * 2018-06-12 2018-12-07 无锡智安能科技有限公司 A kind of devices and methods therefor obtaining the distribution of inside lithium ion cell state
CN109568835A (en) * 2018-11-26 2019-04-05 华霆(合肥)动力技术有限公司 The quick-fried spray detection device of battery, method and system
CN109596992A (en) * 2018-12-28 2019-04-09 中国标准化研究院 A kind of lithium ion battery accelerates the early stage verification method of analysis lithium failure
CN110531267A (en) * 2019-08-30 2019-12-03 恒大新能源科技集团有限公司 Battery thermal shock test method and test device
CN110800151A (en) * 2017-06-23 2020-02-14 株式会社村田制作所 Lithium ion secondary battery system, charging unit, and method for controlling lithium ion secondary battery
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