CN112824919A - Method, device and equipment for determining thermal runaway alarm threshold of battery - Google Patents
Method, device and equipment for determining thermal runaway alarm threshold of battery Download PDFInfo
- Publication number
- CN112824919A CN112824919A CN201911148459.5A CN201911148459A CN112824919A CN 112824919 A CN112824919 A CN 112824919A CN 201911148459 A CN201911148459 A CN 201911148459A CN 112824919 A CN112824919 A CN 112824919A
- Authority
- CN
- China
- Prior art keywords
- thermal runaway
- battery
- characteristic parameter
- alarm threshold
- cell
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 111
- 238000012216 screening Methods 0.000 claims description 33
- 238000012795 verification Methods 0.000 claims description 18
- 238000009783 overcharge test Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000007654 immersion Methods 0.000 claims description 7
- 238000009863 impact test Methods 0.000 claims description 6
- 230000020169 heat generation Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003031 high energy carrier Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the disclosure provides a method, a device and equipment for determining a thermal runaway alarm threshold of a battery. The method comprises the following steps: detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes to obtain a parameter value group; the parameter value group comprises electric core characteristic parameter values of the electric core characteristic parameters when heat is out of control in each test scene; and determining the thermal runaway alarm threshold of the characteristic parameters of the battery cell according to the parameter value group. Therefore, compared with the situation that the thermal runaway alarm threshold is determined according to manual experience in the prior art, the embodiment of the disclosure can determine the thermal runaway alarm threshold with guaranteed accuracy and reliability based on the parameter value group obtained in the actual test scene, so that the thermal runaway alarm signal can be timely and reliably sent out.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of batteries, in particular to a method, a device and equipment for determining a thermal runaway alarm threshold of a battery.
Background
With the rapid development of the technical field of vehicles, the popularity of vehicles such as new energy vehicles and the like is higher and higher. In many cases, a safety accident of a vehicle such as a new energy automobile is caused by a battery system as a power source, and since a battery cell (i.e., a battery cell) in the battery system belongs to a high-energy carrier and has an active property, thermal runaway may occur under a low-temperature condition, and the thermal runaway phenomenon is too preventive.
In the prior art, a vehicle generally outputs a thermal runaway alarm signal to prompt drivers and passengers to take corresponding measures for thermal runaway, however, the output time of the thermal runaway alarm signal is determined based on a thermal runaway alarm threshold selected according to manual experience, and the thermal runaway alarm threshold is probably inaccurate, so that the thermal runaway alarm signal cannot be timely and reliably sent out.
Disclosure of Invention
The embodiment of the disclosure provides a method, a device and equipment for determining a thermal runaway alarm threshold of a battery, and aims to solve the problem that a thermal runaway alarm signal cannot be timely and reliably sent out due to inaccurate thermal runaway alarm threshold used in the prior art.
In a first aspect, an embodiment of the present disclosure provides a method for determining a thermal runaway alarm threshold of a battery, where the method includes:
detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes to obtain a parameter value group; the parameter value set comprises cell characteristic parameter values of the cell characteristic parameters when thermal runaway occurs in each test scene;
and determining a thermal runaway alarm threshold of the battery core characteristic parameters according to the parameter value set.
In some embodiments, determining the thermal runaway alarm threshold for the cell characteristic parameter according to the parameter value set includes:
screening one electric core characteristic parameter value in the parameter value groups as a reference value of the electric core characteristic parameter according to a screening rule matched with the electric core characteristic parameter;
and determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
In some embodiments, the screening, according to a screening rule matching the cell characteristic parameter, one of the parameter value sets as a reference value of the cell characteristic parameter includes:
and screening the parameter value set under the condition that the electrical core characteristic parameter is the electrical core temperature, the electrical core voltage or the electrical core temperature rise slope, wherein the electrical core characteristic parameter value with the minimum value is used as the reference value of the electrical core characteristic parameter.
In some embodiments, after determining the thermal runaway alarm threshold for the cell characteristic parameter according to the parameter value set, the method further includes:
transmitting thermal runaway configuration information to the vehicle;
the thermal runaway configuration information is used for indicating the vehicle to output a thermal runaway alarm signal under the condition that a preset condition is met, wherein the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope;
the preset condition comprises at least one of the following conditions:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
In some embodiments, the plurality of test scenarios comprises at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
In some embodiments of the present invention, the,
the cell level test scenario includes at least one of: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scenario of the battery module level comprises at least one of the following: heating a test scene by the battery module and needling the test scene by the battery module;
the battery system level test scenario includes at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
In some embodiments, after determining the thermal runaway alarm threshold for the cell characteristic parameter, the method further includes:
under a calibration scene, acquiring a cell characteristic parameter value of the cell characteristic parameter when thermal runaway occurs;
and verifying the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the verifying the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained magnitude relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter includes:
under the condition that the characteristic parameter of the battery core is the temperature of the battery core, the voltage of the battery core or the temperature rise slope of the battery core, if the obtained characteristic parameter value of the battery core is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery core, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery core passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the electrical core characteristic parameter is not passed.
In a second aspect, embodiments of the present disclosure provide an apparatus for determining a thermal runaway alarm threshold of a battery, the apparatus comprising:
the first obtaining module is used for detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes so as to obtain a parameter value group; the parameter value set comprises cell characteristic parameter values of the cell characteristic parameters when thermal runaway occurs in each test scene;
and the determining module is used for determining the thermal runaway alarm threshold of the battery core characteristic parameter according to the parameter value group.
In some embodiments, the determining module comprises:
the screening submodule is used for screening one electric core characteristic parameter value in the parameter value groups as a reference value of the electric core characteristic parameter according to a screening rule matched with the electric core characteristic parameter;
and the determining submodule is used for determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
In some embodiments, the screening submodule is specifically configured to:
and screening the parameter value set under the condition that the electrical core characteristic parameter is the electrical core temperature, the electrical core voltage or the electrical core temperature rise slope, wherein the electrical core characteristic parameter value with the minimum value is used as the reference value of the electrical core characteristic parameter.
In some embodiments, the apparatus further comprises:
the sending module is used for sending thermal runaway configuration information to a vehicle after determining the thermal runaway alarm threshold of the battery cell characteristic parameter according to the parameter value group;
the thermal runaway configuration information is used for indicating the vehicle to output a thermal runaway alarm signal under the condition that a preset condition is met, wherein the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope;
the preset condition comprises at least one of the following conditions:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
In some embodiments, the plurality of test scenarios comprises at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
In some embodiments of the present invention, the,
the cell level test scenario includes at least one of: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scenario of the battery module level comprises at least one of the following: heating a test scene by the battery module and needling the test scene by the battery module;
the battery system level test scenario includes at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
In some embodiments, the apparatus further comprises:
the second obtaining module is used for obtaining the electrical core characteristic parameter value of the electrical core characteristic parameter when thermal runaway occurs in a checking scene after the thermal runaway alarm threshold of the electrical core characteristic parameter is determined;
and the checking module is used for checking the thermal runaway alarm threshold of the electric core characteristic parameter according to the obtained size relationship between the electric core characteristic parameter value and the thermal runaway alarm threshold of the electric core characteristic parameter.
In some embodiments, the verification module is specifically configured to:
under the condition that the characteristic parameter of the battery core is the temperature of the battery core, the voltage of the battery core or the temperature rise slope of the battery core, if the obtained characteristic parameter value of the battery core is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery core, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery core passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the electrical core characteristic parameter is not passed.
In a third aspect, an embodiment of the present disclosure provides a battery thermal runaway alarm threshold determination device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the above battery thermal runaway alarm threshold determination method.
In a fourth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the steps of the above battery thermal runaway alarm threshold determination method.
In the embodiment of the disclosure, the cell characteristic parameters when the heat generation is out of control in a plurality of test scenes can be detected to obtain the parameter value group, and the parameter value group can include the cell characteristic parameter values of the cell characteristic parameters when the heat generation is out of control in each test scene, so that the parameter value group can reflect the real parameter values of the cell characteristic parameters when the heat generation is out of control in various test scenes. And then, determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the parameter value group, wherein the determined thermal runaway alarm threshold of the electrical core characteristic parameter can cover the thermal runaway condition under all test scenes. Compared with the situation that the thermal runaway alarm threshold is determined according to manual experience in the prior art, the embodiment of the disclosure can determine the thermal runaway alarm threshold with guaranteed accuracy and reliability based on the parameter value group obtained in the actual test scene, so that the thermal runaway alarm signal can be timely and reliably sent out.
Drawings
FIG. 1 is a flow chart of a battery thermal runaway alarm threshold determination method provided by an embodiment of the disclosure;
FIG. 2 is a block diagram of a battery thermal runaway alarm threshold determination apparatus provided by an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a battery thermal runaway alarm threshold determination device provided by an embodiment of the disclosure.
Detailed Description
Technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
First, a method for determining a thermal runaway alarm threshold of a battery provided by an embodiment of the disclosure is described below.
It should be noted that the method for determining the warning threshold value of the battery thermal runaway provided by the embodiment of the disclosure can be applied to a device for determining the warning threshold value of the battery thermal runaway. Specifically, the battery thermal runaway alarm threshold determination device may be a server, and of course, the battery thermal runaway alarm threshold determination device may also be other electronic devices with computing and processing capabilities, which is not listed here.
Referring to fig. 1, a flowchart of a method for determining a battery thermal runaway alarm threshold provided by an embodiment of the disclosure is shown. As shown in fig. 1, the method comprises the steps of:
Here, the "plurality" of the plurality of test scenarios may be five, eight, ten, twelve or other numbers, which are not listed here.
Generally, a Battery System in a vehicle may include a Battery pack and a Battery Management System (BMS) for managing the Battery pack; the battery pack can include a battery module, a housing and a thermal management system, and the battery module can be formed by combining a plurality of battery cells in a series-parallel connection mode.
Prior to performing step 101, historical vehicle accident case information may be counted, for example, between 1 month to 3 months of 2019 in 2015. According to statistics of vehicle accident case information, the conditions of safety failure of the battery system mainly include: the charging spontaneous combustion, spontaneous combustion during driving, water immersion spontaneous combustion, collision spontaneous combustion and the like, and the analysis of the vehicle accident case information shows that the main reasons for the safety failure of the battery system are as follows: the method comprises the following steps of internal short circuit of a battery core, overcharge of a battery system, failure of a battery management system, electrical failure of the battery system, structural seal failure of the battery system, structural strength failure of the battery system and the like.
Before step 101 is executed, a fault tree analysis may be performed on the battery system from a safety design perspective, specifically, the battery system may be subjected to safety design check from electrical safety, mechanical safety, chemical safety, and functional safety perspectives from component to system level, so as to comb out main control factors of thermal runaway safety, where the main control factors may include safety of a battery cell, safety of a battery module, sealing of a thermal management system, sealing of a battery box, safety of a battery management system, electrical safety of the battery system, and bonding strength of the battery system.
Next, the analysis result obtained according to the vehicle accident case information and the fault tree analysis result of the battery system may be combined to determine the situation that thermal runaway is likely to occur, which mainly includes: the method comprises the following steps of short circuit of the battery core, overcharge of the battery core, heating of the battery module, needling of the battery module, overcharge of the battery system, soaking of the battery system, ball impact of the battery system, electric connection and untwisting of a high-voltage loop of the battery system and the like.
After determining that the thermal runaway is likely to occur, the plurality of test scenarios in step 101 may be determined according to the determined situation. Specifically, the plurality of test scenarios may include at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
In some embodiments of the present invention, the,
the cell level test scenario may include at least one of: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scenario of the battery module level may include at least one of: heating a test scene by the battery module and needling the test scene by the battery module;
the battery system level test scenario may include at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
And for each test scene in the plurality of test scenes, performing vehicle test to switch the vehicle from a state in which thermal runaway does not occur to a state in which thermal runaway occurs, and detecting the electrical core characteristic parameters for each test scene respectively to obtain the electrical core characteristic parameter values of the electrical core characteristic parameters when thermal runaway occurs in each test scene, so as to obtain a parameter value group consisting of the obtained plurality of electrical core characteristic parameter values. It should be noted that, the cell characteristic parameters and the parameter value groups may be in a one-to-one correspondence relationship, that is, the number of the cell characteristic parameters is the same as the number of the parameter value groups.
And step 102, determining a thermal runaway alarm threshold of the characteristic parameter of the battery cell according to the parameter value group.
In some embodiments, step 102 may comprise:
according to a screening rule matched with the battery cell characteristic parameters, screening one battery cell characteristic parameter value in the parameter value groups as a reference value of the battery cell characteristic parameters;
and determining the thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
Here, the cell characteristic parameter may be a cell temperature, a cell voltage, or a cell temperature rise slope.
Specifically, the cell temperature may be detected by a temperature sensor; the cell voltage can be detected by a voltage sensor; the cell temperature rise slope can be obtained by processing the cell temperature detected by the temperature sensor, and can represent the rise of the cell temperature value in unit time. It can be understood that the three physical quantities of the cell temperature, the cell voltage and the cell temperature rise slope can effectively represent the cell characteristics when thermal runaway occurs.
It should be noted that the cell characteristic parameter may also be a cell current or other characteristic parameter, which is not listed here.
In some embodiments, screening, according to a screening rule matching with the cell characteristic parameter, one of the cell characteristic parameter values in the parameter value set as a reference value of the cell characteristic parameter includes:
and under the condition that the cell characteristic parameters are cell temperature, cell voltage or cell temperature rise slope, in the screening parameter value groups, the cell characteristic parameter value with the minimum value is used as the reference value of the cell characteristic parameters.
Specifically, assuming that the cell characteristic parameter is the cell temperature, and the parameter value group of the cell characteristic parameter includes 78 degrees celsius, 79 degrees celsius, 80 degrees celsius, and 82 degrees celsius, 78 degrees celsius may be screened out from the parameter value group, and 78 degrees celsius is used as the reference value of the cell temperature.
Therefore, the implementation mode can conveniently screen the reference values of the cell characteristic parameters.
Of course, the specific implementation of determining the reference value of the electrical core characteristic parameter through the screening operation is not limited to this, and in the case that the electrical core characteristic parameter is a parameter other than the electrical core temperature, the electrical core voltage, and the electrical core temperature rise slope, the screening process may also be to screen the electrical core characteristic parameter value with the largest value as the reference value of the electrical core characteristic parameter, and it is only necessary to ensure that the finally screened reference value of the electrical core characteristic parameter can cover the thermal runaway condition in all test scenes.
After the reference value of the electrical core characteristic parameter is obtained, the reference value of the electrical core characteristic parameter can be directly used as a thermal runaway alarm threshold value of the electrical core characteristic parameter; or, the reference value of the cell characteristic parameter may be multiplied by the safety factor, and the obtained product is used as the thermal runaway alarm threshold of the cell characteristic parameter. In particular, the safety factor may be 0.8, 0.85, 0.9, or other positive numbers less than 1, which are not listed here.
In the embodiment of the disclosure, the cell characteristic parameters when the heat generation is out of control in a plurality of test scenes can be detected to obtain the parameter value group, and the parameter value group can include the cell characteristic parameter values of the cell characteristic parameters when the heat generation is out of control in each test scene, so that the parameter value group can reflect the real parameter values of the cell characteristic parameters when the heat generation is out of control in various test scenes. And then, determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the parameter value group, wherein the determined thermal runaway alarm threshold of the electrical core characteristic parameter can cover the thermal runaway condition under all test scenes. Compared with the situation that the thermal runaway alarm threshold is determined according to manual experience in the prior art, the embodiment of the disclosure can determine the thermal runaway alarm threshold with guaranteed accuracy and reliability based on the parameter value group obtained in the actual test scene, so that the thermal runaway alarm signal can be timely and reliably sent out.
In some embodiments, after determining the thermal runaway alarm threshold of the cell characteristic parameter according to the parameter value group, the method further includes:
transmitting thermal runaway configuration information to the vehicle;
the thermal runaway configuration information is used for indicating that a vehicle outputs a thermal runaway alarm signal under the condition that a preset condition is met, and the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
Specifically, the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope. That is, one of the at least three electrical core characteristic parameters is the electrical core temperature, another one of the at least three electrical core characteristic parameters is the electrical core voltage, and another one of the at least three electrical core characteristic parameters is the electrical core temperature rise slope.
The preset condition may include at least one of:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
Here, the preset value may be 1 ampere, and the preset duration may be 30 seconds, 1 minute, or 2 minutes, and of course, values of the preset value and the preset duration are not limited thereto, and may be determined specifically according to an actual situation, and the embodiment of the present disclosure does not limit this.
Here, the thermal runaway configuration information may carry a thermal runaway alarm threshold of the cell temperature, a thermal runaway alarm threshold of the cell temperature rise slope, and a thermal runaway alarm threshold of the cell voltage. In the operation process, the vehicle can detect the cell temperature, the cell voltage and the cell temperature rise slope at regular time or irregular time.
Under the condition that the temperature value of the battery core is greater than the thermal runaway alarm threshold of the temperature of the battery core, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core, the temperature value of the battery core and the temperature rise slope value of the battery core can be considered to both reach alarm conditions; when the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold of the voltage of the battery core, the temperature rise slope value of the battery core and the voltage value of the battery core can be considered to reach alarm conditions; when the temperature value of the battery core is greater than the thermal runaway alarm threshold value of the temperature of the battery core and the voltage acquisition of the battery core fails, the temperature value of the battery core can be considered to reach the alarm condition, and the voltage value of the battery core cannot be acquired at all; when the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the duration that the cell current value is greater than or equal to the preset duration, it can be considered that the cell voltage value reaches the alarm condition, and the cell is in an overcharged state. Under any one of the four conditions, a thermal runaway alarm threshold value can be output, so that the driver and the passengers can take measures in time to deal with the thermal runaway, and the safety of the driver and the passengers is ensured.
In some embodiments, after determining the thermal runaway alarm threshold for the cell characteristic parameter, the method further includes:
under a calibration scene, acquiring a cell characteristic parameter value of a cell characteristic parameter when thermal runaway occurs;
and verifying the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter.
Here, the verification scenario includes, but is not limited to, a fire scenario, a wade scenario, and the like.
Specifically, according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter, the thermal runaway alarm threshold of the electrical core characteristic parameter is verified, including:
under the condition that the characteristic parameter of the battery cell is the temperature of the battery cell, the voltage of the battery cell or the temperature rise slope of the battery cell, if the obtained characteristic parameter value of the battery cell is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery cell, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery cell passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the cell characteristic parameter is not passed.
Assuming that the electrical core characteristic parameter is the electrical core temperature, it can be understood that, under a normal condition, the electrical core temperature value when thermal runaway occurs should be greater than the thermal runaway alarm threshold of the electrical core temperature determined before, then, under a calibration scene, the electrical core temperature when thermal runaway occurs is collected to obtain the electrical core temperature value, and then, the obtained electrical core temperature value and the thermal runaway alarm threshold of the electrical core temperature can be compared in size. If the comparison result is that the obtained electric core temperature value is greater than the thermal runaway alarm threshold of the electric core temperature, which indicates that the comparison result is consistent with the normal condition, the verification of the thermal runaway alarm threshold of the electric core temperature can be determined to be passed; otherwise, it can be determined that the verification of the thermal runaway alarm threshold of the cell temperature fails.
Therefore, the mode can conveniently and reliably verify the thermal runaway alarm threshold of the electrical core characteristic parameter.
Optionally, in a calibration scenario, a plurality of cell temperature values when thermal runaway occurs may be obtained, and if each of the obtained plurality of cell temperature values is greater than a thermal runaway alarm threshold of the cell temperature, it may be determined that the calibration on the thermal runaway alarm threshold of the cell temperature passes; otherwise, it can be determined that the verification of the thermal runaway alarm threshold of the cell temperature fails.
Therefore, in the embodiment of the disclosure, the thermal runaway alarm threshold of the electrical core characteristic parameter can be verified, so that the accuracy and reliability of the thermal runaway alarm threshold finally used on the vehicle are ensured.
In summary, in the embodiment of the disclosure, a relatively accurate thermal runaway alarm threshold can be obtained through test data in a plurality of test scenarios, and the accuracy of the thermal runaway alarm threshold used on a vehicle can be further ensured through checking the thermal runaway alarm threshold, so that when a thermal runaway occurs, a battery management system of the vehicle can timely and reliably send out a thermal runaway alarm signal.
The following describes an alarm threshold determination device provided by an embodiment of the present disclosure.
Referring to fig. 2, a block diagram of a battery thermal runaway alarm threshold determination device 200 provided by an embodiment of the disclosure is shown. As shown in fig. 2, the battery thermal runaway alarm threshold determination device 200 includes:
a first obtaining module 201, configured to detect a cell characteristic parameter when heat runaway occurs in multiple test scenes, so as to obtain a parameter value set; the parameter value group comprises electric core characteristic parameter values of the electric core characteristic parameters when heat is out of control in each test scene;
and the determining module 202 is configured to determine a thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value group.
In some embodiments, the determining module 202 includes:
the screening submodule is used for screening one electric core characteristic parameter value in the parameter value group as a reference value of the electric core characteristic parameter according to a screening rule matched with the electric core characteristic parameter;
and the determining submodule is used for determining the thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
In some embodiments, the screening submodule is specifically configured to:
and under the condition that the cell characteristic parameters are cell temperature, cell voltage or cell temperature rise slope, in the screening parameter value groups, the cell characteristic parameter value with the minimum value is used as the reference value of the cell characteristic parameters.
In some embodiments, the battery thermal runaway alarm threshold determination device 200 further comprises:
the sending module is used for sending thermal runaway configuration information to the vehicle after determining the thermal runaway alarm threshold of the electrical core characteristic parameter according to the parameter value group;
the thermal runaway configuration information is used for indicating that a vehicle outputs a thermal runaway alarm signal under the condition that a preset condition is met, and the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope;
the preset conditions include at least one of the following:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
In some embodiments, the plurality of test scenarios includes at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
In some embodiments of the present invention, the,
the test scene of the cell level comprises at least one of the following: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scene of the battery module level comprises at least one of the following items: heating a test scene by the battery module and needling the test scene by the battery module;
the test scenario at the battery system level includes at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
In some embodiments, the battery thermal runaway alarm threshold determination device 200 further comprises:
the second obtaining module is used for obtaining the electrical core characteristic parameter value of the electrical core characteristic parameter when thermal runaway occurs in a checking scene after the thermal runaway alarm threshold of the electrical core characteristic parameter is determined;
and the checking module is used for checking the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the verification module is specifically configured to:
under the condition that the characteristic parameter of the battery cell is the temperature of the battery cell, the voltage of the battery cell or the temperature rise slope of the battery cell, if the obtained characteristic parameter value of the battery cell is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery cell, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery cell passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the cell characteristic parameter is not passed.
Compared with the situation that the thermal runaway alarm threshold is determined according to manual experience in the prior art, the embodiment of the disclosure can determine the thermal runaway alarm threshold with guaranteed accuracy and reliability based on the parameter value group obtained in the actual test scene, so that the thermal runaway alarm signal can be timely and reliably sent out.
The following describes a battery thermal runaway alarm threshold determination device provided by an embodiment of the disclosure.
Referring to fig. 3, a schematic structural diagram of a battery thermal runaway alarm threshold determination device 300 provided by an embodiment of the disclosure is shown. As shown in fig. 3, the battery thermal runaway alarm threshold determination device 300 includes: a processor 301, a transceiver 302, a memory 303, a user interface 304 and a bus interface.
A processor 301 for reading the program in the memory 303 and executing the following processes:
detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes to obtain a parameter value group; the parameter value group comprises electric core characteristic parameter values of the electric core characteristic parameters when heat is out of control in each test scene;
and determining the thermal runaway alarm threshold of the characteristic parameters of the battery cell according to the parameter value group.
In FIG. 3, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 301, and various circuits, represented by memory 303, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 302 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 304 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 301 is responsible for managing the bus architecture and general processing, and the memory 303 may store data used by the processor 301 in performing operations.
In some embodiments, the processor 301 is specifically configured to:
according to a screening rule matched with the battery cell characteristic parameters, screening one battery cell characteristic parameter value in the parameter value groups as a reference value of the battery cell characteristic parameters;
and determining the thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
In some embodiments, the processor 301 is specifically configured to:
and under the condition that the cell characteristic parameters are cell temperature, cell voltage or cell temperature rise slope, in the screening parameter value groups, the cell characteristic parameter value with the minimum value is used as the reference value of the cell characteristic parameters.
In some embodiments, the processor 301 is further configured to:
after determining a thermal runaway alarm threshold of the characteristic parameters of the battery cell according to the parameter value group, sending thermal runaway configuration information to a vehicle;
the thermal runaway configuration information is used for indicating that a vehicle outputs a thermal runaway alarm signal under the condition that a preset condition is met, and the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope;
the preset conditions include at least one of the following:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
In some embodiments, the plurality of test scenarios includes at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
In some embodiments of the present invention, the,
the test scene of the cell level comprises at least one of the following: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scene of the battery module level comprises at least one of the following items: heating a test scene by the battery module and needling the test scene by the battery module;
the test scenario at the battery system level includes at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
In some embodiments, the processor 301 is further configured to:
after determining a thermal runaway alarm threshold of the electrical core characteristic parameter, acquiring an electrical core characteristic parameter value of the electrical core characteristic parameter when the thermal runaway occurs in a calibration scene;
and verifying the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter.
In some embodiments, the processor 301 is specifically configured to:
under the condition that the characteristic parameter of the battery cell is the temperature of the battery cell, the voltage of the battery cell or the temperature rise slope of the battery cell, if the obtained characteristic parameter value of the battery cell is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery cell, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery cell passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the cell characteristic parameter is not passed.
Compared with the situation that the thermal runaway alarm threshold is determined according to manual experience in the prior art, the embodiment of the disclosure can determine the thermal runaway alarm threshold with guaranteed accuracy and reliability based on the parameter value group obtained in the actual test scene, so that the thermal runaway alarm signal can be timely and reliably sent out.
The embodiment of the present disclosure further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by the processor 301, the computer program implements each process in the method for determining a threshold of a battery thermal runaway alarm, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (15)
1. A method for determining a thermal runaway alarm threshold for a battery, the method comprising:
detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes to obtain a parameter value group; the parameter value set comprises cell characteristic parameter values of the cell characteristic parameters when thermal runaway occurs in each test scene;
and determining a thermal runaway alarm threshold of the battery core characteristic parameters according to the parameter value set.
2. The method of claim 1, wherein determining the thermal runaway alarm threshold for the cell characteristic parameter based on the set of parameter values comprises:
screening one electric core characteristic parameter value in the parameter value groups as a reference value of the electric core characteristic parameter according to a screening rule matched with the electric core characteristic parameter;
and determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
3. The method of claim 2, wherein the screening, according to a screening rule matching the cell characteristic parameter, one of the parameter value sets as the reference value of the cell characteristic parameter includes:
and screening the parameter value set under the condition that the electrical core characteristic parameter is the electrical core temperature, the electrical core voltage or the electrical core temperature rise slope, wherein the electrical core characteristic parameter value with the minimum value is used as the reference value of the electrical core characteristic parameter.
4. The method of claim 1, wherein after determining the thermal runaway alarm threshold for the cell characteristic parameter based on the set of parameter values, the method further comprises:
transmitting thermal runaway configuration information to the vehicle;
the thermal runaway configuration information is used for indicating the vehicle to output a thermal runaway alarm signal under the condition that a preset condition is met, wherein the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
5. The method of claim 4, wherein the number of the cell characteristic parameters is at least three, and the at least three cell characteristic parameters include a cell temperature, a cell voltage, and a cell temperature rise slope;
the preset condition comprises at least one of the following conditions:
the temperature value of the battery core is greater than the thermal runaway alarm threshold of the battery core temperature, and the temperature rise slope value of the battery core is greater than the thermal runaway alarm threshold of the temperature rise slope of the battery core;
the temperature rise slope value of the battery core is larger than the thermal runaway alarm threshold value of the temperature rise slope of the battery core, and the voltage value of the battery core is smaller than the thermal runaway alarm threshold value of the voltage of the battery core;
the temperature value of the battery core is larger than the thermal runaway alarm threshold value of the battery core temperature, and the voltage acquisition of the battery core is invalid;
the cell voltage value is higher than the thermal runaway alarm threshold of the cell voltage, and the time length when the cell current value is greater than or equal to the preset time length.
6. The method of claim 1, wherein the plurality of test scenarios comprises at least one of:
a test scenario of a cell level;
a test scenario of a battery module level;
a battery system level test scenario.
7. The method of claim 6,
the cell level test scenario includes at least one of: a battery cell short circuit test scene and a battery cell overcharge test scene;
the test scenario of the battery module level comprises at least one of the following: heating a test scene by the battery module and needling the test scene by the battery module;
the battery system level test scenario includes at least one of: the method comprises the following steps of a battery system overcharge test scene, a battery system immersion test scene, a battery system ball impact test scene and a battery system high-voltage loop electric connection back-twist test scene.
8. The method of claim 1, wherein after determining the thermal runaway alarm threshold for the cell characteristic parameter, the method further comprises:
under a calibration scene, acquiring a cell characteristic parameter value of the cell characteristic parameter when thermal runaway occurs;
and verifying the thermal runaway alarm threshold of the electrical core characteristic parameter according to the obtained relationship between the electrical core characteristic parameter value and the thermal runaway alarm threshold of the electrical core characteristic parameter.
9. The method of claim 8, wherein the verifying the warning threshold value of the cell characteristic parameter according to the obtained magnitude relationship between the cell characteristic parameter value and the warning threshold value of the cell characteristic parameter, includes:
under the condition that the characteristic parameter of the battery core is the temperature of the battery core, the voltage of the battery core or the temperature rise slope of the battery core, if the obtained characteristic parameter value of the battery core is larger than the thermal runaway alarm threshold value of the characteristic parameter of the battery core, determining that the thermal runaway alarm threshold value of the characteristic parameter of the battery core passes the verification; otherwise, determining that the verification of the thermal runaway alarm threshold of the electrical core characteristic parameter is not passed.
10. An apparatus for determining a thermal runaway alarm threshold for a battery, the apparatus comprising:
the first obtaining module is used for detecting the cell characteristic parameters when the heat is out of control in a plurality of test scenes so as to obtain a parameter value group; the parameter value set comprises cell characteristic parameter values of the cell characteristic parameters when thermal runaway occurs in each test scene;
and the determining module is used for determining the thermal runaway alarm threshold of the battery core characteristic parameter according to the parameter value group.
11. The apparatus of claim 10, wherein the determining module comprises:
the screening submodule is used for screening one electric core characteristic parameter value in the parameter value groups as a reference value of the electric core characteristic parameter according to a screening rule matched with the electric core characteristic parameter;
and the determining submodule is used for determining a thermal runaway alarm threshold of the electrical core characteristic parameter according to the reference value of the electrical core characteristic parameter.
12. The apparatus of claim 10, further comprising:
the sending module is used for sending thermal runaway configuration information to a vehicle after determining the thermal runaway alarm threshold of the battery cell characteristic parameter according to the parameter value group;
the thermal runaway configuration information is used for indicating the vehicle to output a thermal runaway alarm signal under the condition that a preset condition is met, wherein the preset condition is associated with a thermal runaway alarm threshold of the electrical core characteristic parameter.
13. The apparatus of claim 10, further comprising:
the second obtaining module is used for obtaining the electrical core characteristic parameter value of the electrical core characteristic parameter when thermal runaway occurs in a checking scene after the thermal runaway alarm threshold of the electrical core characteristic parameter is determined;
and the checking module is used for checking the thermal runaway alarm threshold of the electric core characteristic parameter according to the obtained size relationship between the electric core characteristic parameter value and the thermal runaway alarm threshold of the electric core characteristic parameter.
14. A battery thermal runaway alarm threshold determination device comprising a processor, a memory, a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the battery thermal runaway alarm threshold determination method as claimed in any one of claims 1 to 9.
15. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for battery thermal runaway alarm threshold determination of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148459.5A CN112824919B (en) | 2019-11-21 | 2019-11-21 | Battery thermal runaway alarm threshold determining method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148459.5A CN112824919B (en) | 2019-11-21 | 2019-11-21 | Battery thermal runaway alarm threshold determining method, device and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112824919A true CN112824919A (en) | 2021-05-21 |
| CN112824919B CN112824919B (en) | 2023-06-13 |
Family
ID=75907353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911148459.5A Active CN112824919B (en) | 2019-11-21 | 2019-11-21 | Battery thermal runaway alarm threshold determining method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112824919B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454774A (en) * | 2022-01-05 | 2022-05-10 | 重庆金康动力新能源有限公司 | Battery pack thermal runaway early warning system and method |
| WO2023207362A1 (en) * | 2022-04-28 | 2023-11-02 | 华为技术有限公司 | Battery thermal runaway test system and test method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040267467A1 (en) * | 2002-09-17 | 2004-12-30 | Gopal Ravi B | Alarm recovery system and method for fuel cell testing systems |
| CN102176627A (en) * | 2011-02-10 | 2011-09-07 | 张佳宾 | Adaptive measurement and control system for charge-discharge process of integrated storage battery |
| CN105067215A (en) * | 2015-08-05 | 2015-11-18 | 合肥美的电冰箱有限公司 | Method and system for acquiring drop impact test data |
| US20170003339A1 (en) * | 2015-07-01 | 2017-01-05 | Broadcom Corporation | Apparatus and Method to Monitor Thermal Runaway in a Semiconductor Device |
| CN107611513A (en) * | 2017-09-21 | 2018-01-19 | 公安部天津消防研究所 | A kind of method for monitoring lithium ion battery of electric automobile thermal runaway |
| CN107632262A (en) * | 2017-08-07 | 2018-01-26 | 北京长城华冠汽车科技股份有限公司 | A kind of detection method and device of power battery pack cycle life |
| WO2018041421A1 (en) * | 2016-09-02 | 2018-03-08 | Volkswagen Aktiengesellschaft | Method for determining the functional reliability of a battery |
| CN107861065A (en) * | 2017-09-30 | 2018-03-30 | 中国汽车技术研究中心 | Thermal runaway test method for power battery test |
| CN109786872A (en) * | 2019-03-18 | 2019-05-21 | 北京航空航天大学 | A kind of lithium ion battery thermal runaway early warning system and method |
| CN110261781A (en) * | 2019-06-12 | 2019-09-20 | 天津市捷威动力工业有限公司 | A kind of method for early warning of battery thermal runaway |
| CN110370984A (en) * | 2019-06-26 | 2019-10-25 | 清华大学 | Power battery thermal runaway method for early warning |
-
2019
- 2019-11-21 CN CN201911148459.5A patent/CN112824919B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040267467A1 (en) * | 2002-09-17 | 2004-12-30 | Gopal Ravi B | Alarm recovery system and method for fuel cell testing systems |
| CN102176627A (en) * | 2011-02-10 | 2011-09-07 | 张佳宾 | Adaptive measurement and control system for charge-discharge process of integrated storage battery |
| US20170003339A1 (en) * | 2015-07-01 | 2017-01-05 | Broadcom Corporation | Apparatus and Method to Monitor Thermal Runaway in a Semiconductor Device |
| CN105067215A (en) * | 2015-08-05 | 2015-11-18 | 合肥美的电冰箱有限公司 | Method and system for acquiring drop impact test data |
| WO2018041421A1 (en) * | 2016-09-02 | 2018-03-08 | Volkswagen Aktiengesellschaft | Method for determining the functional reliability of a battery |
| CN107632262A (en) * | 2017-08-07 | 2018-01-26 | 北京长城华冠汽车科技股份有限公司 | A kind of detection method and device of power battery pack cycle life |
| CN107611513A (en) * | 2017-09-21 | 2018-01-19 | 公安部天津消防研究所 | A kind of method for monitoring lithium ion battery of electric automobile thermal runaway |
| CN107861065A (en) * | 2017-09-30 | 2018-03-30 | 中国汽车技术研究中心 | Thermal runaway test method for power battery test |
| CN109786872A (en) * | 2019-03-18 | 2019-05-21 | 北京航空航天大学 | A kind of lithium ion battery thermal runaway early warning system and method |
| CN110261781A (en) * | 2019-06-12 | 2019-09-20 | 天津市捷威动力工业有限公司 | A kind of method for early warning of battery thermal runaway |
| CN110370984A (en) * | 2019-06-26 | 2019-10-25 | 清华大学 | Power battery thermal runaway method for early warning |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454774A (en) * | 2022-01-05 | 2022-05-10 | 重庆金康动力新能源有限公司 | Battery pack thermal runaway early warning system and method |
| CN114454774B (en) * | 2022-01-05 | 2024-01-05 | 重庆金康动力新能源有限公司 | Battery pack thermal runaway early warning system and method |
| WO2023207362A1 (en) * | 2022-04-28 | 2023-11-02 | 华为技术有限公司 | Battery thermal runaway test system and test method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112824919B (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109240277B (en) | Control system diagnosis function real vehicle test automation platform and test method | |
| CN109031138B (en) | Safety assessment method and device for power battery | |
| US20140346982A1 (en) | Method and Apparatuses for Authenticating Measurement Data for a Battery | |
| CN112824919B (en) | Battery thermal runaway alarm threshold determining method, device and equipment | |
| CN113492679B (en) | Pyrotechnic igniter circuit and testing method | |
| CN111913113A (en) | Method and device for identifying short circuit in electric core, storage medium and electronic equipment | |
| CN113625692B (en) | Electric automobile battery security inspection system based on fault injection | |
| US20160363629A1 (en) | Systems and methods for estimating battery system power capability | |
| CN109001576B (en) | Vehicle collision simulation test method and device | |
| KR101748644B1 (en) | Apparatus for simulating battery module | |
| Barreras et al. | Functional analysis of Battery Management Systems using multi-cell HIL simulator | |
| CN113787914A (en) | Power battery monitoring method and device, server and storage medium | |
| Khan | ISO 26262 system level functional safety validation for battery management systems in automobiles | |
| KR20220120372A (en) | Battery management apparatus and method of the same | |
| CN116626492A (en) | Battery fault diagnosis method and device and vehicle | |
| CN116773134A (en) | Power battery collision test method, device, equipment and medium | |
| EP3871919B1 (en) | Method and detection unit for detecting inhomogeneous cell performance of a battery system | |
| CN114270203B (en) | Battery pack simulation device and method for checking battery management unit using same | |
| CN115503535A (en) | Secure charging method, apparatus, device and computer readable storage medium | |
| Murray et al. | Electric Vehicle Battery Safety and Compliance | |
| CN115047344A (en) | Power battery pack heat estimation method and device | |
| US20140019449A1 (en) | Method for Providing Codes for the State of Risk of a Battery | |
| CN112634569A (en) | Fire early warning method and device, electronic equipment and storage medium | |
| Taylor et al. | High-Voltage Battery System Concepts for ISO 26262 Compliance | |
| CN114074574A (en) | Current acquisition method and device for vehicle, control equipment and automobile |
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 |