CN111638302B - Lithium ion battery fire hazard risk grade classification test detection method - Google Patents
Lithium ion battery fire hazard risk grade classification test detection method Download PDFInfo
- Publication number
- CN111638302B CN111638302B CN202010466696.2A CN202010466696A CN111638302B CN 111638302 B CN111638302 B CN 111638302B CN 202010466696 A CN202010466696 A CN 202010466696A CN 111638302 B CN111638302 B CN 111638302B
- Authority
- CN
- China
- Prior art keywords
- battery
- temperature
- hot box
- lithium ion
- ion battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combustion & Propulsion (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a lithium ion battery fire hazard grade classification universal test detection method, which comprises the following steps: charging the lithium ion battery to a 100% charge state, and then respectively carrying out a hot box experiment and a combustion experiment on the sample battery; in the hot box experiment, the temperature T of the hot box is set to be 140, 160 and 180 ℃ in sequence, the temperature is kept for 30 minutes after the surface of the battery reaches the set temperature of the hot box, whether the thermal runaway of the battery occurs or the temperature exceeds 200 ℃ is observed, and if the temperature is the critical environment temperature T of the thermal runaway of the battery to be detected0The temperature of the hot box is less than or equal to the temperature of the hot box and is greater than the temperature of the previous hot box; in the combustion experiment, the battery is heated to be in thermal runaway combustion, the combustion phenomenon of the battery and the peak value of the heat release rate of the battery are recorded and standardized as qpeak(ii) a Finally based on the critical environment temperature T of thermal runaway0And normalized heat release rate peak qpeakAnd detecting and grading the fire hazard of the lithium ion battery to be detected according to the fire hazard level matrix.
Description
Technical Field
The invention relates to the technical field of lithium ion battery fire hazard grade research, in particular to a lithium ion battery fire hazard grade grading test method, which is used for detecting and grading the fire hazard grade of a battery from two angles of the ignition possibility and the fire hazard destructive power of the lithium ion battery.
Background
In recent years, lithium ion batteries have become the most common secondary batteries in daily life, and are widely used in the fields of mobile phones, portable computers, aerospace and electric vehicles. However, lithium ion batteries still have certain safety problems due to their high energy density and flammable and explosive material compositions, mainly manifested by the risk of thermal runaway or fire when the batteries undergo overcharge and overdischarge, mechanical shock, and overheating. In the thermal runaway process of the lithium ion battery, exothermic reactions among oxygen released by decomposition of the positive electrode material, electrolyte and the electrode material often occur, and these side reactions often result in the release of heat and gas, and finally result in the thermal runaway causing extremely serious fire threats such as combustion and explosion. Therefore, the research on the fire hazard grade grading general test method and the grading matrix of the lithium ion battery has important significance for qualitative and quantitative analysis of the thermal safety of the battery.
At present, common abuse tests of the lithium ion battery are mainly divided into electric, thermal and mechanical abuse tests; wherein the electric abuse comprises overcharge, overdischarge, short circuit and the like, the thermal abuse comprises heating, flame broil and the like, and the mechanical abuse comprises extrusion, needling, impact and the like; among them, the battery hot box test and the combustion test are widely concerned. The fire risk rating of a substance may be considered from two perspectives, namely the likelihood of fire and the amount of destructive power of the fire. The more easily a certain substance catches fire, e.g. the lower the ignition temperature; the larger the destructive power of a certain substance after ignition is, the stronger the heat release capacity is; the greater the fire risk of such a substance. However, a general classification test method and a classification matrix for fire hazard classes special for lithium ion batteries are not available at present; with the monopoly status of lithium ion batteries in the field of electronic products and the expansion to the fields of large-scale electric vehicles, energy storage power stations and the like, a lithium ion battery fire hazard risk grade classification universal test detection method is urgently needed to be provided to perform qualitative and quantitative analysis on the thermal safety of the batteries and provide guidance for the safety design of the batteries.
Disclosure of Invention
The invention aims to provide a lithium ion battery fire hazard grade classification universal test detection method based on a hot box test and a combustion test. By carrying out a lithium ion battery hot box experiment, measuring the thermal runaway critical environment temperature of the battery, the ignition possibility of the battery can be evaluated; by developing a lithium ion battery combustion experiment, the fire destructive power of the battery can be evaluated; and (4) combining the two indexes to detect and classify the fire hazard of the lithium ion battery.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a lithium ion battery fire hazard grade classification universal test detection method comprises the following steps:
step 1, charging a lithium ion battery to a 100% charge state;
step 2, respectively carrying out a hot box experiment and a combustion experiment on a tested battery sample;
step 3, in a hot box experiment, sequentially setting the hot box temperatures T to be 140, 160 and 180 ℃ according to a hot box temperature step sequence, and keeping the battery surface temperature at the set hot box temperature for 30 minutes after the battery surface temperature reaches the hot box temperature set in the hot box temperature step sequence; checking whether the battery is in thermal runaway or the surface temperature exceeds 200 ℃ under the temperature of the hot box, and if so, recording that the thermal runaway critical environment temperature of the battery to be tested is less than or equal to the set temperature of the hot box and greater than the temperature step of the previous hot box; if not, increasing the temperature of the hot box to the next temperature step, and continuing the experiment; obtaining the critical environment temperature T of the battery thermal runaway0；
Step 4, in the battery combustion experiment, heating the battery to thermal runaway combustion, recording the battery combustion phenomenon and the peak value of the heat release rate, and standardizing the peak value to qpeak；
Step 5, according to the critical environment temperature T of thermal runaway of the battery measured by the experiment0And normalized heat release rate peak qpeakAnd obtaining the fire hazard level of the lithium ion battery to be detected based on the fire hazard level grading matrix.
Furthermore, a hanging basket, a thermocouple, a data acquisition instrument and a hot box are adopted in the lithium ion battery hot box experiment; the highest temperature which can be reached by the hot box is more than 250 ℃, and the temperature control precision is less than or equal to 1 ℃; after the thermocouple is arranged on the surface of the battery, the battery is placed into a hanging basket, and the hanging basket is fixed in the center of the hot box.
Further, firstly, the temperature of a hot box is set to be 140 ℃, after the surface temperature of the battery reaches the temperature of the hot box, the temperature is kept for 30 minutes, whether the thermal runaway of the lithium ion battery occurs or whether the battery temperature exceeds 200 ℃ is observed under the temperature of the hot box, and if so, the thermal runaway critical environment temperature T of the lithium ion battery0≤140℃。
Further, if the lithium ion battery does not generate thermal runaway at the ambient temperature of 140 ℃ and the battery temperature does not exceed 200 ℃, increasing the temperature of a hot box to 160 ℃, keeping for 30 minutes after the surface temperature of the battery reaches the temperature of the hot box, and observing whether the lithium ion battery generates thermal runaway or whether the battery temperature exceeds 200 ℃ at the temperature of the hot box; if yes, the critical environment temperature T of thermal runaway of the lithium ion battery to be tested0In the range of 140 deg.C<T0Less than or equal to 160 ℃; if not, continuously increasing the temperature of the hot box to 180 ℃, keeping for 30 minutes after the surface temperature of the battery reaches the temperature of the hot box, and observing whether the lithium ion battery is out of control thermally or whether the battery temperature exceeds 200 ℃ under the temperature of the hot box; if yes, the critical environment temperature T of thermal runaway of the lithium ion battery to be tested0In the range of 160 deg.C<T0Less than or equal to 180 ℃; if not, the thermal runaway critical environment temperature T of the tested lithium ion battery0>180℃。
Further, the lithium ion battery combustion experiment comprises: a lithium ion battery combustion experiment table is built, a heating element is utilized to heat the battery until the battery is burnt out of control thermally, the combustion heat release rate of the lithium ion battery is measured based on the oxygen consumption principle, and the heat release rate is subjected to standardization treatment by the surface area of the battery.
Further, when a combustion calorimeter is selected, the measuring range of the calorimeter is determined according to the capacity of the battery, and the battery with the capacity within 2Ah is measured by adopting a cone calorimeter; testing the battery cell with the capacity of 2-500 Ah by using a mesoscale calorimeter with the range of 1kW-200 kW; due to the jet flow characteristics of the battery, the smoke is completely absorbed by the smoke collecting hood during testing, and no overflow occurs.
Further, the heat release rate of the battery is measured according to an oxygen consumption method, and the heat release rate peak is normalized using the total surface area of the battery to obtain a normalized heat release rate peak qpeak(MW m-2)。
Further, according to the critical environment temperature T of thermal runaway of the battery0And normalized heat release rate peak qpeakAnd obtaining the fire hazard risk level of the lithium ion battery.
Further, lithium ion battery fire risk ratings include extreme risk (I), severe risk (II), moderate risk (III), and mild risk (IV).
Has the advantages that:
according to the general test method, the ignition possibility of the battery can be evaluated by carrying out a lithium ion battery hot box test and measuring the thermal runaway critical environment temperature of the battery; by developing a lithium ion battery combustion experiment, the fire destructive power of the battery can be evaluated; and (4) integrating the two test parameters to detect the fire hazard of the lithium ion battery.
Drawings
FIG. 1 is a basic flow diagram of the test method of the present invention;
FIG. 2 is a lithium ion battery fire risk rating grading matrix according to the present invention;
FIG. 3(a) is a graph of hot box results for 0% SOC batteries with hot box temperatures of 140, 160 and 180 oC;
FIG. 3(b) is a graph of hot box results for a 50% SOC battery with hot box temperatures of 140, 160 and 180 oC;
FIG. 3(c) is a graph of hot box results for 75% SOC batteries with hot box temperatures of 140, 160 and 180 oC;
FIG. 3(d) is a graph of hot box results for 100% SOC batteries with hot box temperatures of 140, 160 and 180 oC;
FIG. 4A certain type of Li (Ni)xCoyMnz)O2Graph of heat release rate peak after normalization for graphite 18650 cells and comparison to other standard fuels.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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, rather than all embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention without creative efforts.
According to an embodiment of the invention, a lithium ion battery fire risk grade classification universal test detection method is provided, which comprises the following steps:
step 1, charging a lithium ion battery to a 100% charge state;
step 2, respectively carrying out a hot box experiment and a combustion experiment on a tested battery sample;
step 3, in a hot box experiment, sequentially setting the hot box temperatures T to be 140, 160 and 180 ℃ according to a hot box temperature step sequence, and keeping the battery surface temperature at the set hot box temperature for 30 minutes after the battery surface temperature reaches the hot box temperature set in the hot box temperature step sequence; checking whether the battery is in thermal runaway or the surface temperature exceeds 200 ℃ under the temperature of the hot box, and if so, recording that the thermal runaway critical environment temperature of the battery to be tested is less than or equal to the set temperature of the hot box and greater than the temperature step of the previous hot box; if not, increasing the temperature of the hot box to the next temperature step, and continuing the experiment; obtaining the critical environment temperature T of the battery thermal runaway0；
Step 4, in the battery combustion experiment, heating the battery to thermal runaway combustion, recording the battery combustion phenomenon and the peak value of the heat release rate, and standardizing the peak value to qpeak；
Step 5, according to the critical environment temperature T of thermal runaway of the battery measured by the experiment0And normalized heat release rate peak qpeakAnd obtaining the fire hazard level of the lithium ion battery to be detected based on the fire hazard level grading matrix.
As shown in fig. 1, according to an embodiment of the present invention, a lithium ion battery fire risk classification universal test detection method includes a hot box test and a combustion test. Based on the critical environment temperature of the lithium ion battery thermal runaway measured by a hot box experiment and the peak value of the release rate of the battery combustion heat measured by a combustion experiment, the fire hazard grade classification of the lithium ion battery is obtained by contrasting with a fire hazard grade classification matrix.
The hot box experiment was carried out as shown in FIG. 1. The hot box should meet the following requirements: the volume is more than or equal to 1 mx 1m, the temperature control precision is less than or equal to 1 ℃, the temperature is continuously adjustable, the highest adjustable temperature is not lower than 250 ℃, and the anti-explosion strength is certain.
After the battery is charged to a full-charge state, a thermocouple is fixed on the surface of the battery, the battery is placed on a hanging basket of the hot box, and finally the hanging basket is fixed in the center of the hot box.
Raising the temperature of the hot box to 140 ℃, and keeping for 30 minutes after the surface temperature of the battery reaches 140 ℃; observing whether the battery is in thermal runaway or whether the battery temperature exceeds 200 ℃, and recording the thermal runaway critical environment temperature T of the battery if the battery temperature exceeds 200 DEG C0Less than or equal to 140 ℃; if not, the hot box temperature is raised to 160 ℃.
After the surface temperature of the battery reaches 160 ℃, keeping for 30 minutes; observing whether the thermal runaway of the battery occurs or whether the surface temperature of the battery exceeds 200 ℃, and if so, recording the thermal runaway critical environment temperature of the battery at 140 DEG C<T0Less than or equal to 160 ℃; if not, the hot box temperature is raised to 180 ℃.
After the surface temperature of the battery reaches 180 ℃, keeping for 30 minutes; observing whether the thermal runaway of the battery occurs or whether the surface temperature of the battery exceeds 200 ℃, and if so, recording the thermal runaway critical environment temperature of the battery of 160 DEG C<T0Less than or equal to 180 ℃; if not, recording the thermal runaway critical environment temperature T of the battery0>180 ℃ is carried out. Based on the thermal box experiment steps, the critical environment temperature T of the lithium ion battery thermal runaway is obtained0。
The steps for carrying out the combustion test of the lithium ion battery are shown in fig. 1. The lithium ion battery combustion heat release rate is measured based on the oxygen consumption principle. The range of the combustion calorimeter is selected as follows: the battery with the capacity within 2Ah can be measured by adopting a cone calorimeter; the battery core with the capacity of 2-500 Ah can be tested by adopting a mesoscale calorimeter with the range of 1kW-200 kW. Due to the jet flow characteristics of the battery, the smoke is ensured to be completely absorbed by the smoke collecting hood during testing, and no overflow occurs.
In the combustion experiment, the battery was heated to thermal runaway and burn by external heating. The heating method and heating power setting recommendation table is shown in table 1:
TABLE 1
Taking a square battery and a heating plate as an example, after the battery is charged to a full-charge state, a thermocouple is arranged in the center of the surface of the battery and is tightly attached to the heating plate, and meanwhile, a support is adopted to fix the heating plate and the battery, so that the contact surface of the fixing support and the battery and the heating plate is required to have better heat insulation capacity, and the battery can be heated to be out of control and burnt; for the soft-packaged battery cell, clamping plates are additionally arranged at two ends of the battery cell according to the actual terminal installation condition, and the clamping plates are used for limiting the expansion of the battery cell. And placing the bracket and the battery in a combustion chamber of a heat release test system, heating the battery until the battery is burnt out of control, igniting the battery to generate gas outside if no open fire exists, recording the burning phenomenon by video, and waiting until the battery is completely extinguished.
Recording the heat release rate curve of the battery, dividing the curve by the surface area of the battery to obtain the normalized heat release rate and obtaining the peak value q of the normalized heat release ratepea k。
Based on the hot box experiment and the combustion experiment, the thermal runaway critical environment temperature T of the battery to be tested is obtained0And peak combustion heat release rate qpeak. Based on the two parameters, the ignition possibility and the fire destructive power of the lithium ion battery are analyzed to obtain the fire risk level of the lithium ion battery to be tested, and the grading matrix is shown in fig. 2:
the abscissa represents the critical ambient temperature T for thermal runaway0The ordinate represents the peak value q of the combustion heat release ratepeak。
If the battery explodes or qpeak≥1MW m-2Or T0The fire hazard grade is extreme (including explosion) hazard (I) when the temperature is less than or equal to 140 ℃; if 0.5MW m-2≤qpeak<1MW m-2Or 140 deg.C<T0The fire hazard grade is serious danger (II) when the temperature is less than or equal to 160 ℃; if 0.2MW m-2≤qpeak<0.5MW m-2Or 160 deg.C<T0The fire hazard grade is moderate hazard (III) when the temperature is less than or equal to 180 ℃; if q ispeak<0.2MW m-2Or T0>180 ℃, the fire hazard rating is mild hazard (IV). If according to T0And q ispeakIf the obtained risk levels are not consistent, the level with high risk is taken as the standard.
In order to verify the feasibility of the lithium ion battery fire risk grade classification general test detection method, an experimental example is used for analysis.
Example (b):
according to the above embodiment, for certain Li (Ni)xCoyMnz)O2The graphite 18650 type cell was subjected to a hot box test and a combustion test, respectively. The temperature of the hot box is respectively set to be 140 ℃, 160 ℃ and 180 ℃; in the combustion experiment, a hollow cylindrical heater which just can accommodate a battery is adopted for heating, the heating power is 150W, and a Heat Release Rate (HRR) testing instrument is a standard cone calorimeter. FIG. 3 shows a certain formula of Li (Ni)xCoyMnz)O2Graphite 18650 type battery hot box experimental results. The temperature in the label represents the set hot box temperature; the surface temperature of the different SOC batteries in the hot box experiment is shown in the change curves along with the time in the graphs of 3(a) to (d); normalized heat release rate peak q for different state of charge (SOC) cellspeakAnd a comparison graph with other standard fuels is shown in figure 4. According to the hot box experiment, the thermal runaway critical environment temperature T of different SOC batteries can be obtained00%, 50%, 75% and 100% fire risk ratings are class IV, III and III, respectively; according to the combustion experiment, the heat release rate peak value q after the standardization of different SOC batteries can be obtainedpeak0%, 50%, 75% and 100% fire risk ratings are class IV, III, II and I, respectively; and combining the two parameters, wherein the grade with high risk is the fire risk grade of the tested sample battery, and the fire risk grades of 0%, 50%, 75% and 100% are respectively IV, III, II and I. The lithium ion battery fire risk grade classification general test detection method and the classification matrix can well classify the fire risk grades of different SOC batteries, and the classification result conforms to the rule that the fire risk of the batteries increases along with the increase of SOC and the actual situation.
In summary, the invention provides a lithium ion battery fire hazard risk grade grading systemThe test detection method comprises a lithium ion battery hot box test and a combustion test, and the lithium ion battery thermal runaway critical environment temperature T is obtained according to the measurement0And normalized heat release rate peak qpeakAnd evaluating the ignition possibility and the fire destructive power of the battery. And comprehensively considering the parameters, and providing a lithium ion battery fire hazard grade grading matrix. The general test method and the fire hazard grade grading matrix provide suggestions and guidance for quantitative detection of the lithium ion battery fire hazard and research of the lithium ion battery safety prevention and control strategy.
The present embodiments are illustrative only, and do not limit the scope of the invention, and modifications and variations that may be made by those skilled in the art without departing from the principles of the invention are to be considered as within the scope of the invention.
Claims (3)
1. A lithium ion battery fire hazard grade classification universal test detection method is characterized by comprising the following steps:
step 1, charging a lithium ion battery to a 100% charge state;
step 2, respectively carrying out a hot box experiment and a combustion experiment on a tested battery sample;
step 3, adopting a hanging basket, a thermocouple, a data acquisition instrument and a hot box for a lithium ion battery hot box experiment; the highest temperature which can be reached by the hot box is more than 250 ℃, and the temperature control precision is less than or equal to 1 ℃; after a thermocouple is arranged on the surface of the battery, the battery is placed in a hanging basket, and the hanging basket is fixed in the center of a hot box; in the hot box experiment, the temperature of the hot box is set in sequence according to the step sequence of the temperature of the hot boxTAt 140, 160 and 180 ℃, after the surface temperature of the battery reaches the temperature of the hot box set in the hot box temperature step sequence, keeping the temperature of the battery at the set temperature of the hot box for 30 minutes; checking whether the battery is in thermal runaway or the surface temperature exceeds 200 ℃ under the temperature of the hot box, and if so, recording that the thermal runaway critical environment temperature of the battery to be tested is less than or equal to the set temperature of the hot box and greater than the temperature step of the previous hot box; if not, increasing the temperature of the hot box to the next temperature step, and continuing to usePerforming an experiment; obtaining the critical environment temperature of thermal runaway of the batteryT 0(ii) a The method specifically comprises the following steps:
firstly, setting the temperature of a hot box to 140 ℃, keeping for 30 minutes after the surface temperature of the battery reaches the temperature of the hot box, observing whether the lithium ion battery is out of control thermally or whether the battery temperature exceeds 200 ℃ under the temperature of the hot box, and if so, determining the critical environment temperature of the lithium ion battery in thermal out of controlT 0≤140℃；
If the lithium ion battery does not generate thermal runaway at the ambient temperature of 140 ℃ and the battery temperature does not exceed 200 ℃, increasing the temperature of a hot box to 160 ℃, keeping for 30 minutes after the surface temperature of the battery reaches the temperature of the hot box, and observing whether the lithium ion battery generates thermal runaway or whether the battery temperature exceeds 200 ℃ at the temperature of the hot box; if yes, the critical environment temperature of thermal runaway of the lithium ion battery is measuredT 0In the range of 140 deg.C<T 0Less than or equal to 160 ℃; if not, continuously increasing the temperature of the hot box to 180 ℃, keeping for 30 minutes after the surface temperature of the battery reaches the temperature of the hot box, and observing whether the lithium ion battery is out of control thermally or whether the battery temperature exceeds 200 ℃ under the temperature of the hot box; if yes, the critical environment temperature of thermal runaway of the lithium ion battery is measuredT 0In the range of 160 deg.C<T 0Less than or equal to 180 ℃; if not, the critical environment temperature of thermal runaway of the lithium ion battery is measuredT 0>180℃；
Step 4, in the battery combustion experiment, heating the battery to thermal runaway combustion, measuring the heat release rate of the battery according to an oxygen consumption method, and standardizing the heat release rate peak value by using the total surface area of the battery to obtain a standardized heat release rate peak valueq peak，MW m-2；
Step 5, according to the critical environment temperature of thermal runaway of the battery measured by the experimentT 0And normalized peak heat release rateq peakObtaining the fire hazard level of the lithium ion battery to be detected based on the fire hazard level grading matrix;
the lithium ion battery combustion experiment comprises: building a lithium ion battery combustion experiment table, heating the battery by using a heating element until the battery is combusted in a thermal runaway way, measuring the combustion heat release rate of the lithium ion battery based on an oxygen consumption principle, and carrying out standardization treatment on the heat release rate by using the surface area of the battery;
when the combustion calorimeter is selected, the measuring range of the calorimeter is determined according to the capacity of the battery, and the battery with the capacity within 2Ah is measured by adopting a cone calorimeter; testing the battery cell with the capacity of 2-500 Ah by using a mesoscale calorimeter with the range of 1kW-200 kW; due to the jet flow characteristics of the battery, the smoke is completely absorbed by the smoke collecting hood during testing, and no overflow occurs;
according to the critical environment temperature of thermal runaway of the batteryT 0And normalized peak heat release rateq peakAnd obtaining the fire hazard risk level of the lithium ion battery.
2. The lithium ion battery fire risk rating classification universal test detection method as claimed in claim 1, wherein the lithium ion battery fire risk rating comprises extreme risk I, severe risk II, moderate risk III and mild risk IV.
3. The lithium ion battery fire risk grade classification universal test detection method according to claim 1, characterized in that before heating the lithium ion battery, a thermocouple is arranged at the center of the battery surface, and the battery is tightly attached to a heating element; meanwhile, fixing the heating element and the battery by using a bracket; for the soft-packaged battery cell, clamping plates are added at two ends of the battery cell and used for limiting the expansion of the battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466696.2A CN111638302B (en) | 2020-05-28 | 2020-05-28 | Lithium ion battery fire hazard risk grade classification test detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466696.2A CN111638302B (en) | 2020-05-28 | 2020-05-28 | Lithium ion battery fire hazard risk grade classification test detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111638302A CN111638302A (en) | 2020-09-08 |
| CN111638302B true CN111638302B (en) | 2022-03-01 |
Family
ID=72328805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010466696.2A Active CN111638302B (en) | 2020-05-28 | 2020-05-28 | Lithium ion battery fire hazard risk grade classification test detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111638302B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394084A (en) * | 2020-09-14 | 2021-02-23 | 万向一二三股份公司 | Device and method for measuring combustion heat value of lithium ion battery in limited space |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026051A1 (en) * | 2014-08-22 | 2016-02-25 | Corvus Energy Ltd. | Thermal runaway containment apparatus for a battery |
| CN105445320A (en) * | 2015-11-18 | 2016-03-30 | 王建刚 | Thermal runaway visualizing test and analysis system for power battery |
| CN106290458A (en) * | 2015-05-15 | 2017-01-04 | 中国电力科学研究院 | A kind of detection method of lithium ion battery security |
| CN109613056A (en) * | 2018-11-22 | 2019-04-12 | 清华大学 | The evaluation method of lithium ion battery fire risk |
| CN109655748A (en) * | 2018-12-29 | 2019-04-19 | 清华大学 | The determination method of battery thermal runaway temperature and the evaluation method of battery thermal runaway performance |
| CN110376247A (en) * | 2019-08-14 | 2019-10-25 | 中国科学技术大学 | A kind of lithium ion battery combustion experiment platform |
| CN209728136U (en) * | 2019-03-15 | 2019-12-03 | 深圳市比克动力电池有限公司 | A kind of lithium ion battery thermal runaway experimental provision and its monitoring system |
-
2020
- 2020-05-28 CN CN202010466696.2A patent/CN111638302B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026051A1 (en) * | 2014-08-22 | 2016-02-25 | Corvus Energy Ltd. | Thermal runaway containment apparatus for a battery |
| CN106290458A (en) * | 2015-05-15 | 2017-01-04 | 中国电力科学研究院 | A kind of detection method of lithium ion battery security |
| CN105445320A (en) * | 2015-11-18 | 2016-03-30 | 王建刚 | Thermal runaway visualizing test and analysis system for power battery |
| CN109613056A (en) * | 2018-11-22 | 2019-04-12 | 清华大学 | The evaluation method of lithium ion battery fire risk |
| CN109655748A (en) * | 2018-12-29 | 2019-04-19 | 清华大学 | The determination method of battery thermal runaway temperature and the evaluation method of battery thermal runaway performance |
| CN209728136U (en) * | 2019-03-15 | 2019-12-03 | 深圳市比克动力电池有限公司 | A kind of lithium ion battery thermal runaway experimental provision and its monitoring system |
| CN110376247A (en) * | 2019-08-14 | 2019-10-25 | 中国科学技术大学 | A kind of lithium ion battery combustion experiment platform |
Non-Patent Citations (2)
| Title |
|---|
| 18650型锂离子电池的安全性能研究;胡杨等;《电池》;20060630(第03期);1.3实验方法，热箱实验，2.1热箱实验，表一电池的热箱实验结果 * |
| 矿用锂离子电池与镍氢电池安全性分析;李相哲等;《矿业安全与环保》;20111210(第06期);第85-78页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111638302A (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Fire behavior of lithium-ion battery with different states of charge induced by high incident heat fluxes | |
| Wang et al. | A comparative analysis on thermal runaway behavior of Li (NixCoyMnz) O2 battery with different nickel contents at cell and module level | |
| Zhong et al. | Thermal runaway and fire behavior investigation of lithium ion batteries using modified cone calorimeter | |
| Abada et al. | Safety focused modeling of lithium-ion batteries: A review | |
| Golubkov et al. | Thermal runaway of large automotive Li-ion batteries | |
| Zhang et al. | Safety of lithium-ion batteries | |
| Song et al. | Thermal runaway propagation behavior and energy flow distribution analysis of 280 Ah LiFePO4 battery | |
| Niu et al. | Thermal-runaway propagation over a linear cylindrical battery module | |
| Chen et al. | Thermal runaway modeling of LiNi0. 6Mn0. 2Co0. 2O2/graphite batteries under different states of charge | |
| Wang et al. | An experimental analysis on thermal runaway and its propagation in Cell-to-Pack lithium-ion batteries | |
| Shelkea et al. | Combined numerical and experimental studies of 21700 lithium-ion battery thermal runaway induced by different thermal abuse | |
| Wang et al. | Thermal explosion energy evaluated by thermokinetic analysis for series-and parallel-circuit NMC lithium battery modules | |
| Hu et al. | Investigation on thermal runaway of 18,650 lithium ion battery under thermal abuse coupled with charging | |
| Said et al. | Characterisation of thermal runaway behaviour of cylindrical lithium-ion battery using Accelerating Rate Calorimeter and oven heating | |
| Shelke et al. | Characterizing and predicting 21700 NMC lithium-ion battery thermal runaway induced by nail penetration | |
| Wang et al. | Study on the fire risk associated with a failure of large‐scale commercial LiFePO4/graphite and LiNixCoyMn1‐x‐yO2/graphite batteries | |
| Wang et al. | An experimental investigation of the degradation and combustion behaviors associated with lithium ion batteries after different aging treatments | |
| CN110058173A (en) | A kind of test method of power lithium-ion battery thermal runaway | |
| Liu et al. | Propensity to self-heating ignition of open-circuit pouch lithium-ion battery pile on a hot boundary | |
| Bugryniec et al. | Assessment of thermal runaway in commercial lithium iron phosphate cells due to overheating in an oven test | |
| Willstrand et al. | Impact of different Li-ion cell test conditions on thermal runaway characteristics and gas release measurements | |
| CN111638302B (en) | Lithium ion battery fire hazard risk grade classification test detection method | |
| Duh et al. | Thermal runaway on 18650 lithium-ion batteries containing cathode materials with and without the coating of self-terminated oligomers with hyper-branched architecture (STOBA) used in electric vehicles | |
| Zeng et al. | Cell-level hazard evaluation of 18650 form-factor Lithium-ion battery with different cathode materials | |
| Xu et al. | A comparative study of the venting gas of lithium-ion batteries during thermal runaway triggered by various methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |