CN109884547B - Detection method and system for abnormal temperature rise module and related components - Google Patents
Detection method and system for abnormal temperature rise module and related components Download PDFInfo
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- CN109884547B CN109884547B CN201910127287.7A CN201910127287A CN109884547B CN 109884547 B CN109884547 B CN 109884547B CN 201910127287 A CN201910127287 A CN 201910127287A CN 109884547 B CN109884547 B CN 109884547B
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Abstract
The application discloses detection method of temperature rise abnormity module is applied to power battery assembly, includes: when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly; acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection; and determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data. The method can accurately detect the abnormal temperature rise module in the power battery assembly, and prolong the service life of the power battery assembly. The application also discloses a detection system of the abnormal temperature rise module, a computer readable storage medium and an electronic device, which have the beneficial effects.
Description
Technical Field
The application relates to the technical field of new energy automobiles, in particular to a method and a system for detecting an abnormal temperature rise module, a computer readable storage medium and electronic equipment.
Background
The power battery assembly is used as a core component of a new energy automobile, the quality of the performance of the power battery assembly determines the visual feeling of a user in the use process, two main factors mainly influencing the popularization of the new energy automobile at present are charging time and driving range, the charging and discharging performance of the power battery is poor under the low-temperature condition, so that the charging time is too long under the low-temperature condition and the actual charging capacity is low, and safety accidents such as explosion, liquid leakage and the like can occur even if the charging current is increased blindly under the low-temperature condition. At present, most power battery assemblies adopt a PTC heating mode to heat the battery assembly to be higher than 0 ℃ and then charge the battery assembly.
Receive the condition that battery assembly box structure and module distribute, the module intensification difference of different positions often can appear in same battery assembly condition big that the module difference in temperature is too big can influence its performance and life absolutely.
Therefore, how to accurately detect the abnormal temperature rise module in the power battery assembly and improve the service life of the power battery assembly is a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The application aims to provide a method and a system for detecting a temperature rise abnormal module, a computer readable storage medium and electronic equipment, which can accurately detect the temperature rise abnormal module in a power battery assembly and prolong the service life of the power battery assembly.
In order to solve the technical problem, the application provides a method for detecting an abnormal temperature rise module, which is applied to a power battery assembly, and the method comprises the following steps:
when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly;
acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
and determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data.
Optionally, the obtaining of the temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection includes:
acquiring temperature rise data corresponding to the power battery assembly under a first temperature rise condition, a second temperature rise condition, a third temperature rise condition and a fourth temperature rise condition respectively through the communication connection;
the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and PTC heating operation is carried out on the power battery assembly; the second temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of a module of the power battery assembly and the box body to execute PTC heating operation, and a contact part of the PTC heater and air is wrapped by heat insulation cotton; the third temperature rise condition is that a heat insulation pad is arranged on a contact part of a module and a box body of the power battery assembly to execute PTC heating operation; the fourth temperature-rising condition is to wrap the heat insulating cotton around the air-contacting portion of the PTC heater and perform the PTC heating operation.
Optionally, the method further includes:
and determining the abnormal reason of the temperature rise of the abnormal temperature rise module by comparing the corresponding temperature rise data of the power battery assembly under the first temperature rise condition, the second temperature rise condition, the third temperature rise condition and the fourth temperature rise condition.
Optionally, the obtaining of the temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection includes:
when a charging instruction is received, heating operation is carried out on the power battery assembly, and charging operation is carried out on the power battery assembly according to the charging instruction;
and acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection.
Optionally, the method further includes:
judging whether the battery parameters of the power battery assembly meet preset conditions or not;
if so, stopping heating operation;
the battery parameters comprise the current battery temperature, the current total battery voltage and the current single battery voltage, and the preset conditions comprise any one or combination of any one of a first sub-condition, a second sub-condition and a third sub-condition; the first sub-condition is that the current battery temperature is greater than a preset temperature, the second sub-condition is that the current total battery voltage is greater than a preset voltage, and the third sub-condition is that the current single battery voltage is greater than the preset voltage.
Optionally, the temperature rise data includes any one or a combination of any several of heating current, heating time, highest module temperature, lowest module temperature, highest module number, lowest module number, heating time, and power battery system fault level.
The application still provides a detecting system of abnormal module of temperature rise, is applied to the power battery assembly, and this detecting system includes:
the communication module is used for establishing communication connection between the test system and the power battery assembly when the power battery assembly is detected to be connected with the test system;
the data acquisition module is used for acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
and the module determining module is used for determining the temperature rise abnormal module in the power battery assembly according to all the temperature rise data.
Optionally, the data obtaining module is specifically a module that obtains temperature rise data of the power battery assembly under a first temperature rise condition, a second temperature rise condition, a third temperature rise condition and a fourth temperature rise condition through the communication connection;
the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and PTC heating operation is carried out on the power battery assembly; the second temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of a module of the power battery assembly and the box body to execute PTC heating operation, and a contact part of the PTC heater and air is wrapped by heat insulation cotton; the third temperature rise condition is that a heat insulation pad is arranged on a contact part of a module and a box body of the power battery assembly to execute PTC heating operation; the fourth temperature-rising condition is to wrap the heat insulating cotton around the air-contacting portion of the PTC heater and perform the PTC heating operation.
The application also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed, the steps executed by the detection method of the upper temperature rise abnormal module are realized.
The application also provides electronic equipment which comprises a memory and a processor, wherein a computer program is stored in the memory, and the processor realizes the step of executing the detection method of the upper temperature rise abnormal module when calling the computer program in the memory.
The application provides a detection method of abnormal temperature rise module, which is applied to a power battery assembly and comprises the following steps: when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly; acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection; and determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data.
This application passes through the communication connection of test system and power battery assembly to obtain temperature rise data through this communication connection. Under different temperature rise conditions, each module in the power battery assembly can have different temperature rise expressions, consequently this application can accurately detect the unusual module of temperature rise in the power battery assembly through the temperature rise data of acquireing the power battery assembly under multiple temperature rise condition, improves the life of power battery assembly. This application still provides a detecting system, a computer readable storage medium and an electronic equipment of temperature rise unusual module simultaneously, has above-mentioned beneficial effect, and no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a method for detecting an abnormal temperature rise module according to an embodiment of the present disclosure;
fig. 2 is a flowchart of another method for detecting an abnormal temperature rise module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a system for detecting an abnormal temperature rise module according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart of a method for detecting an abnormal temperature rise module according to an embodiment of the present disclosure.
The specific steps may include:
s101: when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly;
among them, the purpose of this embodiment lies in: the method for detecting the unbalance of the heating temperature rise of the power battery is used for determining a module with a large temperature difference after the heating is stopped, determining the main reason influencing the problem of the uneven temperature rise according to a test verification result, providing an optimization reference for the design of a later-stage battery pack thermal management structure and avoiding the problem from a design angle.
The execution main body of the embodiment can be a computer connected with a test system, and the test system is called a power battery charging and discharging test system. Before this step, the operation of setting up the test bed is present by default in this embodiment, and the specific process may include: the I + end of the test system is connected with the anode of the power battery assembly, and the I-end is connected with the cathode of the power battery assembly. And (4) checking the output voltage of the stabilized direct current power supply by using a universal meter, adjusting the output voltage to be within a normal working range of a Battery Management System (BMS), and turning off the stabilized direct current power supply. The battery management system is a device in the power battery assembly and is used for detecting the battery electric quantity and the battery temperature of each battery module in the power battery assembly. Furthermore, the CAN communication data line of the battery management system, the CAN communication line of the test system, the BMS and the voltage-stabilizing direct-current power supply CAN be connected according to the PIN definition specified by the power battery assembly, all wire harnesses are confirmed to be connected without errors and metal exposure, and a safety switch of the battery assembly is installed. Specifically, the communication connection between the test system and the power battery assembly is established, and the communication connection can be established between the test system and a battery management system of the power battery assembly. The present embodiment may further include a regulated dc power supply for charging the power battery assembly.
As a preferred embodiment, the power battery assembly may be placed in an environmental test chamber during testing, and the power battery assembly may also be connected to a cooling system.
Between S101 and S102, there may also be an operation of detecting whether there is a failure of the power battery assembly: the starting power battery test system and the voltage-stabilizing direct-current power supply are started, whether the BMS sends out signals normally or not is observed through the control computer, the temperature of the battery is normal temperature, and the total voltage and the monomer voltage of the battery are within the range specified by a manufacturer, so that the battery has no fault.
S102: acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
the temperature rise data of the power battery assembly is acquired through the established communication connection, and the temperature rise test experiment is performed on the power battery assembly under various temperature rise conditions by default. The temperature rise condition refers to that different heat insulation measures or temperature rise modes are adopted for the battery modules in the power battery assembly. The power battery assembly comprises a plurality of battery modules and a box body.
As a preferred embodiment, the plurality of temperature-rising conditions mentioned in this step may include a first temperature-rising condition, a second temperature-rising condition, a third temperature-rising condition, and a fourth temperature-rising condition. Specifically, the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and the PTC heating operation is performed on the power battery assembly, namely that no heat insulation measure is taken on the first temperature rise condition. The second temperature rise condition is that a heat insulation pad is arranged on a contact part of the module and the box body of the power battery assembly to execute PTC heating operation and wrap the PTC heater and the air contact part with heat insulation cotton, namely the second temperature rise condition is that the heat insulation pad is arranged on the contact part of each module and the box body, and the PTC heater and the air contact part are wrapped with the heat insulation cotton. The third temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of the module and the box body of the power battery assembly to perform PTC heating operation, namely, the heat insulation pad is only arranged on the contact part of the module and the box body, and the PTC heating operation is used for verifying the influence of contact heat conduction singly. The fourth temperature-rising condition is specifically to wrap the heat insulation cotton on the contact part of the PTC heater and the air and perform the PTC heating operation, namely to wrap the heat insulation cotton only on the contact part of the PTC heater and the air, so as to verify the influence of heat exchange on the PTC surface.
On the basis of the above preferred embodiment, in this embodiment, the cause of the abnormal temperature rise module can be determined by comparing the temperature rise data of the power battery assembly corresponding to the first temperature rise condition, the second temperature rise condition, the third temperature rise condition and the fourth temperature rise condition. When a temperature rise of a certain battery module is abnormal under a first temperature rise condition, the reason for the abnormal temperature rise is the reason of the battery module. When the battery module has abnormal temperature rise under the second temperature rise condition, the reason for the abnormal temperature rise is contact heat conduction and/or PTC surface heat exchange. When the battery module has abnormal temperature rise under the third temperature rise condition, the reason for the abnormal temperature rise is contact heat conduction. When the battery module has abnormal temperature rise under the fourth temperature rise condition, the reason for the abnormal temperature rise is PTC surface heat exchange. For example, the battery module a is abnormal in temperature rise only under both the second temperature rise condition and the third temperature rise condition, and therefore, it can be determined that the cause of the abnormal temperature rise of the battery module a is contact heat conduction.
S103: and determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data.
The temperature rise data of the power battery assembly under various different temperature rise conditions are acquired, and the corresponding temperature rise abnormal module under various temperature rise conditions can be determined. It can be understood that, the abnormal temperature rise module mentioned herein means that in the heating process of the power battery assembly, the temperature rise condition of the battery module is obviously different from that of most of the battery modules, that is, the difference between the temperature rise condition of the abnormal temperature rise module and that of other normal battery modules in the heating process of the power battery assembly is greater than the preset standard. The number of the abnormal temperature rise modules is not limited, the related parameters for judging the abnormal temperature rise modules are not limited, and the modules which cause the non-uniform temperature rise of the power battery module can be determined.
Specifically, the temperature rise data may include any one or a combination of any several of heating current, heating time, maximum module temperature, minimum module temperature, maximum module number, minimum module number, heating time, and power battery system fault level.
The temperature rise data is acquired through the communication connection between the testing system and the power battery assembly. Under different temperature rise conditions, each module in the power battery assembly can have different temperature rise expressions, so this embodiment can accurately detect the unusual module of temperature rise in the power battery assembly through obtaining the temperature rise data of power battery assembly under multiple temperature rise conditions, improves the life of power battery assembly.
Referring to fig. 2, fig. 2 is a flowchart of another method for detecting an abnormal temperature rise module according to an embodiment of the present disclosure;
the specific steps may include:
s201: when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly;
s202: when a charging instruction is received, heating operation is carried out on the power battery assembly, and charging operation is carried out on the power battery assembly according to the charging instruction;
s203: judging whether the battery parameters of the power battery assembly meet preset conditions or not; if so, stopping heating operation; if not, ending the flow;
the battery parameters obtained in this step may include a current battery temperature, a current total battery voltage, and a current battery cell voltage, and the preset condition may include any one or a combination of any two of a first sub-condition, a second sub-condition, and a third sub-condition; the first sub-condition is that the current battery temperature is greater than a preset temperature, the second sub-condition is that the current total battery voltage is greater than a preset voltage, and the third sub-condition is that the current single battery voltage is greater than the preset voltage.
S204: and acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection.
S205: and determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data.
The flow described in the above embodiment is explained below by an embodiment in practical use.
1. Battery heating operation
Sending a charging request signal to enable the power battery assembly to enter an external plug-in alternating current charging state, charging according to the required current sent by the BMS, and stopping charging when the BMS sends a charging end signal; in the test process, if the temperature of the battery reaches the designated temperature or the total voltage of the battery reaches U2 or the voltage of the battery monomer reaches U2, the heating is stopped;
under the same test environment, can do as follows to the power battery assembly (1) module and box contact part add the heat insulating mattress, and PTC and air contact part parcel thermal-insulated cotton (2) module and box contact part add heat insulating mattress (3) PTC and air contact part parcel thermal-insulated cotton, carry out the contrast test under the same test environment.
2. Process inspection
After a low-temperature heating test is completed under one test condition, the power battery assembly is subjected to insulation resistance test, so that the high-voltage components of the power battery system are ensured to be free of abnormality.
3. Data recording
The automatic recording of the power battery assembly charging and discharging equipment is as follows: heating current, heating time, highest and lowest module temperature, highest and lowest module number, heating time, power battery system fault level and the like.
4. Data analysis
According to the data collected by the rack, whether the temperature rise condition of the power battery assembly under the low-temperature condition is stable or not is analyzed, and the influence of two factors, namely contact heat conduction or PTC surface heat exchange, on the temperature rise, which is the reason for uneven temperature rise of the module is found out by comparing heating test data which are not processed.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a detection system for an abnormal temperature rise module according to an embodiment of the present disclosure;
the system may include:
the communication module 100 is configured to establish a communication connection between the test system and the power battery assembly when it is detected that the power battery assembly is connected to the test system;
the data acquisition module 200 is configured to acquire temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
and the module determining module 300 is configured to determine an abnormal temperature rise module in the power battery assembly according to all the temperature rise data.
The temperature rise data is acquired through the communication connection between the testing system and the power battery assembly. Under different temperature rise conditions, each module in the power battery assembly can have different temperature rise expressions, so this embodiment can accurately detect the unusual module of temperature rise in the power battery assembly through obtaining the temperature rise data of power battery assembly under multiple temperature rise conditions, improves the life of power battery assembly.
Further, the data obtaining module 200 is specifically a module that obtains temperature rise data of the power battery assembly under a first temperature rise condition, a second temperature rise condition, a third temperature rise condition and a fourth temperature rise condition through the communication connection;
the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and PTC heating operation is carried out on the power battery assembly; the second temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of a module of the power battery assembly and the box body to execute PTC heating operation, and a contact part of the PTC heater and air is wrapped by heat insulation cotton; the third temperature rise condition is that a heat insulation pad is arranged on a contact part of a module and a box body of the power battery assembly to execute PTC heating operation; the fourth temperature-rising condition is to wrap the heat insulating cotton around the air-contacting portion of the PTC heater and perform the PTC heating operation.
Further, the system further comprises:
and the reason determining module is used for determining the abnormal reason of the temperature rise of the abnormal temperature rise module by comparing the corresponding temperature rise data of the power battery assembly under the first temperature rise condition, the second temperature rise condition, the third temperature rise condition and the fourth temperature rise condition.
Further, the data obtaining module 200 is configured to, when receiving a charging instruction, perform a heating operation on the power battery assembly, and perform a charging operation on the power battery assembly according to the charging instruction; and the temperature rise data of the power battery assembly under various temperature rise conditions is acquired through the communication connection.
Further, the system further comprises:
the judging module is used for judging whether the battery parameters of the power battery assembly meet preset conditions or not; if so, stopping heating operation;
the battery parameters comprise the current battery temperature, the current total battery voltage and the current single battery voltage, and the preset conditions comprise any one or combination of any one of a first sub-condition, a second sub-condition and a third sub-condition; the first sub-condition is that the current battery temperature is greater than a preset temperature, the second sub-condition is that the current total battery voltage is greater than a preset voltage, and the third sub-condition is that the current single battery voltage is greater than the preset voltage.
Further, the temperature rise data includes any one or a combination of any several of heating current, heating time, maximum module temperature, minimum module temperature, maximum module number, minimum module number, heating time, and power battery system fault level.
Since the embodiment of the system part corresponds to the embodiment of the method part, the embodiment of the system part is described with reference to the embodiment of the method part, and is not repeated here.
The present application also provides a computer readable storage medium having stored thereon a computer program which, when executed, may implement the steps provided by the above-described embodiments. The storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The application further provides an electronic device, which may include a memory and a processor, where the memory stores a computer program, and the processor may implement the steps provided by the foregoing embodiments when calling the computer program in the memory. Of course, the electronic device may also include various network interfaces, power supplies, and the like.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A detection method of a temperature rise abnormal module is applied to a power battery assembly and is characterized by comprising the following steps:
when the power battery assembly is detected to be connected with a test system, establishing communication connection between the test system and the power battery assembly;
acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data;
wherein, obtaining temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection comprises:
acquiring temperature rise data corresponding to the power battery assembly under a first temperature rise condition, a second temperature rise condition, a third temperature rise condition and a fourth temperature rise condition respectively through the communication connection;
the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and PTC heating operation is carried out on the power battery assembly; the second temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of a module of the power battery assembly and the box body to execute PTC heating operation, and a contact part of the PTC heater and air is wrapped by heat insulation cotton; the third temperature rise condition is that a heat insulation pad is arranged on a contact part of a module and a box body of the power battery assembly to execute PTC heating operation; the fourth temperature-rising condition is to wrap the heat insulating cotton around the air-contacting portion of the PTC heater and perform the PTC heating operation.
2. The detection method according to claim 1, further comprising:
and determining the abnormal reason of the temperature rise of the abnormal temperature rise module by comparing the corresponding temperature rise data of the power battery assembly under the first temperature rise condition, the second temperature rise condition, the third temperature rise condition and the fourth temperature rise condition respectively.
3. The detection method according to claim 1, wherein the step of obtaining temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection comprises the following steps:
when a charging instruction is received, heating operation is carried out on the power battery assembly, and charging operation is carried out on the power battery assembly according to the charging instruction;
and acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection.
4. The detection method according to claim 3, further comprising:
judging whether the battery parameters of the power battery assembly meet preset conditions or not;
if so, stopping heating operation;
the battery parameters comprise the current battery temperature, the current total battery voltage and the current single battery voltage, and the preset conditions comprise any one or combination of any one of a first sub-condition, a second sub-condition and a third sub-condition; the first sub-condition is that the current battery temperature is greater than a preset temperature, the second sub-condition is that the current total battery voltage is greater than a preset voltage, and the third sub-condition is that the current single battery voltage is greater than the preset voltage.
5. The test method according to any one of claims 1 to 4, wherein the temperature rise data comprises any one or a combination of any several of heating current, heating time, highest module temperature, lowest module temperature, highest module number, lowest module number, heating time, and power battery system fault level.
6. The utility model provides a detection system of unusual module of temperature rise, is applied to the power battery assembly, its characterized in that includes:
the communication module is used for establishing communication connection between the test system and the power battery assembly when the power battery assembly is detected to be connected with the test system;
the data acquisition module is used for acquiring temperature rise data of the power battery assembly under various temperature rise conditions through the communication connection;
the module determining module is used for determining a temperature rise abnormal module in the power battery assembly according to all the temperature rise data;
the data acquisition module is specifically a module for acquiring temperature rise data of the power battery assembly under a first temperature rise condition, a second temperature rise condition, a third temperature rise condition and a fourth temperature rise condition through the communication connection;
the first temperature rise condition is that no heat insulation measure is taken on the power battery assembly and PTC heating operation is carried out on the power battery assembly; the second temperature rise condition is specifically that a heat insulation pad is arranged on a contact part of a module of the power battery assembly and the box body to execute PTC heating operation, and a contact part of the PTC heater and air is wrapped by heat insulation cotton; the third temperature rise condition is that a heat insulation pad is arranged on a contact part of a module and a box body of the power battery assembly to execute PTC heating operation; the fourth temperature-rising condition is to wrap the heat insulating cotton around the air-contacting portion of the PTC heater and perform the PTC heating operation.
7. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for detecting an abnormal temperature rise module according to any one of claims 1 to 5 when the computer program is executed.
8. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for detecting a temperature rise abnormality module according to any one of claims 1 to 5 are implemented.
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| CN112505550B (en) * | 2020-11-26 | 2022-06-07 | 重庆长安汽车股份有限公司 | Power battery monitoring and early warning method |
| CN115377552A (en) * | 2022-04-24 | 2022-11-22 | 宁德时代新能源科技股份有限公司 | Self-heating control method and system for power battery, storage medium and electronic equipment |
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