Safety monitoring method of battery pack, device, apparatus, system, and storage medium

Abstract

To disclose and provide a safety monitoring method, a device, an apparatus, a system, and a storage medium of a battery pack, which belong to a battery technical field.SOLUTION: Force reception energy information of a battery pack is obtained on the basis of acquired force reception data of a battery pack in an electric vehicle by a safety monitoring method of a battery pack, an alarm condition of a target level is determined on the basis of the force reception energy information, alarm information corresponding to the alarm condition of a target level is dispatched, the alarm condition of a target level is an alarm condition of one level that force reception energy information satisfies from among alarm conditions of N preset levels, an alarm condition of the i-th level includes a condition in which the fact that collision energy expressed by force reception energy information is within a range of the i-th energy threshold occurs for the mi times, and a lower-limit value of the i-th energy threshold range corresponding to the i-th level alarm condition is larger than an upper-limit value of the (i-1)th energy threshold range corresponding to the alarm condition of the (i-1)th level and mi<mi-1 is true in the case of N>1 and 1<i≤N.SELECTED DRAWING: Figure 1

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application number 202110907630.7, filed on August 9, 2021, entitled "Battery pack safety monitoring method, device, equipment, system and storage medium," the entire contents of which are incorporated herein by reference. [Technical field]

[0002] The present application relates to the field of battery technology, and in particular to a method, device, apparatus, system and storage medium for monitoring the safety of a battery pack. [Background technology]

[0003] With the development of new energy technology, the application fields of batteries are becoming wider and wider, for example, they can be used as a power source to power electric vehicles and reduce the use of non-renewable resources.

[0004] For ease of installation, the battery may be installed in the electric vehicle in the form of a battery pack. During the driving process of the electric vehicle, if the electric vehicle encounters extremely poor road conditions, the battery pack may be damaged by collision, scraping, etc., which may destroy the structure and performance of the battery pack, causing a very large safety risk for the battery pack. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, apparatus, system, and storage medium for monitoring the safety of a battery pack, which can improve the safety of the battery pack.

[0006] According to the first aspect, the method for safely monitoring a battery pack according to an embodiment of the present application obtains force-receiving energy information of the battery pack based on the obtained force-receiving data of the battery pack in an electric vehicle. The force-receiving data is for representing the force-receiving distribution at the bottom of the battery pack, and the force-receiving energy information is for representing the collision energy received at the bottom of the battery pack. Based on the force-receiving energy information, a warning condition at a target level is determined, and warning information corresponding to the warning condition at the target level is transmitted. The warning condition at the target level is one of the preset N levels of warning conditions that the force-receiving energy information satisfies. The warning condition at the i-th level among the N levels of warning conditions is that the collision energy represented by the force-receiving energy information is within the i-th energy threshold range m i times, where N is a positive integer, 0 < i ≤ N, and when N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold range corresponding to the warning condition at the i-th level is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the warning condition at the (i - 1)-th level, m i <m i-1 is.

[0007] The fact that the force-receiving energy information satisfies the condition at the i-th level, that is, the collision energy represented by the force-receiving energy information is within the i-th energy threshold range m i times occurring indicates that the collisions within the i-th energy threshold range received by the battery pack accumulate to cause serious damage to the battery pack. The warning information corresponding to the warning condition at the level satisfied by the force-receiving energy information can indicate that there is a safety risk in the battery pack, quickly discover and process the safety risk of the battery pack, improve the safety of the battery pack, and avoid the battery pack catching fire, exploding, etc. from causing damage to the electric vehicle and the driver.

[0008] According to an embodiment of the first aspect of the present application, the target level warning condition is an i-th level warning condition, and determining the target level warning condition based on the force receiving energy information and issuing warning information corresponding to the target level warning condition includes: when the collision energy represented by the obtained force receiving energy information is in the i-th energy threshold range, performing an accumulation process on the risk accumulation number corresponding to the i-th energy threshold range, and the risk accumulation number corresponding to the i-th energy threshold range is for indicating the number of times that the collision energy represented by the force receiving energy information is in the i-th energy threshold range; and when the risk accumulation number corresponding to the i-th energy threshold range is m i if the i-th level alarm condition is reached, issuing alarm information corresponding to the i-th level alarm condition.

[0009] By performing accumulation processing on the risk cumulative number of times that the collision energy represented by the force receiving energy information is within each energy threshold range, statistics of the number of times that the collision energy is within each energy threshold range are facilitated, and the risk cumulative number of times corresponding to the i-th energy threshold range is m in the i-th level warning condition. i When the number of times reaches this limit, warning information can be sent out accurately and promptly.

[0010] According to any one of the embodiments described in the first aspect of the present application, m N =1.

[0011] m Ncorresponds to the highest level of warning condition, which is set for the most serious collision, and the higher the level of the warning condition, the fewer the number of times the collision energy required to trigger the issuance of warning information is within the corresponding energy threshold range. If the collision energy represented by the force-receiving energy information reaches the most serious collision standard, one collision can cause huge damage to the battery pack, and by setting the number of times within the corresponding energy threshold range in the highest level of warning condition to 1, the high safety risk to the battery pack due to serious collisions can be more quickly discovered and dealt with.

[0012] According to any one of the embodiments described in the first aspect of the present application, obtaining force-receiving energy information of the battery pack based on the acquired force-receiving data of the battery pack installed in the electric vehicle includes obtaining force-receiving energy information of the battery pack based on the force-receiving data when the force-receiving data exceeds a normal change threshold range.

[0013] The force reception data exceeding the normal change threshold range indicates that the bottom of the battery pack has been hit. Only when the bottom of the battery pack has been hit, conversion is performed to obtain the force reception energy information of the battery pack, thereby obtaining the force reception energy information required for the safety monitoring of the battery pack. There is no need to obtain force reception energy information that is not required for the safety monitoring of the battery pack, and the resources occupied by the battery safety monitoring, such as memory resources, calculation resources, etc., can be reduced.

[0014] According to any one of the embodiments described in the first aspect of the present application, before obtaining force-receiving energy information of the battery pack based on the acquired force-receiving data of the battery pack attached to the electric vehicle, the method includes acquiring force-receiving data, and if the number of cached force-receiving data is smaller than a predetermined number threshold, caching the currently acquired force-receiving data, and if the number of cached force-receiving data is equal to or greater than the predetermined number threshold, deleting the force-receiving data acquired at the earliest time and caching the currently acquired force-receiving data.

[0015] By comparing the number of cached force-receiving data with a preset number threshold, the newly acquired force-receiving data can be directly cached, or the force-receiving data with the earliest acquisition time can be deleted and the newly acquired force-receiving data can be cached, so that in addition to setting up cache resources for caching the force-receiving data, other cache resources can be ensured not to be occupied, and cache resources can be saved.

[0016] According to any one of the embodiments described in the first aspect of the present application, the force reception data includes one or more of fluctuation data, pressure data, and acceleration data; Here, the fluctuation data represents the mechanical waves of the collision received by the bottom of the battery pack, the pressure data represents the force received by the bottom of the battery pack, and the acceleration data represents the acceleration of the battery pack in a direction perpendicular to the bottom of the battery pack.

[0017] According to any one of the embodiments described in the first aspect of the present application, safety status information of the battery pack, including power receiving energy information and / or alarm information corresponding to an alarm condition of a target level, is uploaded to a cloud data center.

[0018] Through the data exchange with the cloud data center, the cloud data center can grasp the safety status of the battery pack. The cloud data center can further take certain measures based on the safety information of the battery pack to realize the inspection of the battery pack.

[0019] According to any one of the embodiments described in the first aspect of the present application, the received energy information includes the received energy, and the received energy information further includes the received position.

[0020] According to the second aspect, the safety monitoring device for the battery pack according to the embodiment of the present application is a calculation module for obtaining the received energy information of the battery pack in the obtained electric vehicle based on the received data of the battery pack, where the received data is for representing the received force distribution at the bottom of the battery pack, and the received energy information is a calculation module for representing the collision energy received by the battery pack, and an alarm module for determining the alarm condition of the target level based on the received energy information and transmitting the alarm information corresponding to the alarm condition of the target level, where the alarm condition of the target level is one of the preset N levels of alarm conditions that the received energy information satisfies, and the i-th level of alarm condition among the N levels of alarm conditions is that the collision energy represented by the received energy information is within the i-th energy threshold range for m i times of occurrence, where N is a positive integer, and 0 < i ≤ N. The alarm module includes, where N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold range corresponding to the i-th level of alarm condition is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the (i - 1)-th level of alarm condition, m i <m i-1 is.

[0021] The fact that the received energy information satisfies the i-th level of condition, that is, the collision energy represented by the received energy information is within the i-th energy threshold range for m iThe occurrence of rebounds indicates that the accumulative collisions within the i-th energy threshold range received by the battery pack cause serious damage to the battery pack. Alarm information corresponding to the alarm condition at the level satisfied by the force-receiving energy information can be used to indicate that there is a safety risk in the battery pack, quickly discover the safety risk of the battery pack, quickly process it, improve the safety of the battery pack, and avoid the damage caused by the ignition, explosion, etc. of the battery pack to the electric vehicle and the driver.

[0022] According to the third aspect, the safety monitoring system of the battery pack according to the embodiment of the present application includes a sensor provided at the bottom of the battery pack for collecting the force-receiving data of the battery pack, where the force-receiving data is for representing the force-receiving distribution at the bottom of the battery pack. The battery pack includes a sensor located in the electric vehicle and a controller communicatively connected to the sensor to obtain the force-receiving data from the sensor and obtain the force-receiving energy information of the battery pack based on the force-receiving data, where the force-receiving energy information is for representing the collision energy received at the bottom of the battery pack, and a full-behavior controller communicatively connected to the controller to determine the alarm condition at the target level based on the force-receiving energy information and transmit the alarm information corresponding to the alarm condition at the target level. The alarm condition at the target level is one of the preset N levels of alarm conditions satisfied by the force-receiving energy information. The i-th level of alarm condition among the N levels of alarm conditions is that the collision energy represented by the force-receiving energy information is within the i-th energy threshold range i including the condition of occurrence of rebounds. N is a positive integer, and 0 < i ≤ N. The full-behavior controller includes this. Here, when N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold range corresponding to the i-th level of alarm condition is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the (i - 1)-th level of alarm condition i <m i-1 is.

[0023] The force energy information satisfies the condition of the i-th level, that is, the collision energy represented by the force energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0024] According to a third embodiment of the present application, the system further includes a cloud data center communicatively connected to the full vehicle controller for obtaining safety status information of the battery pack from the full vehicle controller, the safety status information including power receiving energy information and / or alarm information corresponding to a target level alarm condition.

[0025] According to a fourth aspect, an embodiment of the present application provides a battery pack safety monitoring device, the device including a processor and a memory having computer program instructions stored therein, the device realizing the battery pack safety monitoring method of the first aspect when the processor executes the computer program instructions.

[0026] The force energy information satisfies the condition of the i-th level, that is, the collision energy represented by the force energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0027] According to a fifth aspect, an embodiment of the present application provides a computer-readable storage medium having computer program instructions stored thereon, the computer-readable storage medium realizing the battery pack safety monitoring method according to the second aspect when executed by a processor.

[0028] The force energy information satisfies the condition of the i-th level, that is, the collision energy represented by the force energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0029] The embodiments of the present application provide a battery pack safety monitoring method, device, equipment, system, and storage medium for obtaining force receiving energy information for ensuring energy due to force receiving at the bottom of the battery pack based on the force receiving data of the battery pack that can ensure the force receiving distribution at the bottom of the battery pack. Based on the force receiving energy information, an alarm condition of a level satisfied by the force receiving energy, i.e., an alarm condition of a target level, is determined, and alarm information corresponding to the alarm condition of the target level is issued. It is determined whether the force receiving energy information satisfies the condition of the i-th level, i.e., the collision energy represented by the force receiving energy information is within the i-th energy threshold range. iThe occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate that a safety risk exists in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack. [Brief description of the drawings]

[0030] In order to more clearly explain the technical solutions of the embodiments of the present application, the following briefly describes the drawings that need to be used in the embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without paying creative efforts.

[0031] [Figure 1] 2 is a flowchart of an embodiment of a battery pack safety monitoring method according to the present application. [Diagram 2] FIG. 2 is a schematic diagram of an example of a distribution of sensors at the bottom of a battery pack according to an embodiment of the present application. [Diagram 3] FIG. 11 is a schematic diagram of an example of a change over time in force reception data according to an embodiment of the present application. [Figure 4] 4 is a flowchart of another embodiment of a battery pack safety monitoring method according to the present application. [Diagram 5] 11 is a flowchart of yet another embodiment of a battery pack safety monitoring method according to the present application. [Figure 6] 1 is a structural schematic diagram of an embodiment of a battery pack safety monitoring device according to the present application; [Figure 7] FIG. 2 is a structural schematic diagram of another embodiment of a battery pack safety monitoring device according to the present application; [Figure 8] FIG. 2 is a structural schematic diagram of yet another embodiment of a battery pack safety monitoring device according to the present application; [Figure 9] 1 is a structural schematic diagram of an embodiment of a battery pack safety monitoring system according to the present application; [Figure 10]FIG. 2 is a structural schematic diagram of another embodiment of a battery pack safety monitoring system according to the present application; [Figure 11] 1 is a structural schematic diagram of an embodiment of a battery pack safety monitoring device according to the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] The following describes in detail the features and exemplary embodiments of each aspect of the present application, and in order to make the objectives, technical solutions and advantages of the present application clearer, the following describes the present application in more detail in conjunction with drawings and specific examples. It should be understood that the specific examples described herein are only for interpreting the present application, and do not limit the present application. For those skilled in the art, the present application may be implemented without the need for some of these specific details. The following description of the examples is only for providing a better understanding of the present application by illustrating the examples of the present application.

[0033] With the development of new energy technology, the application field of the battery is becoming wider and wider, for example, it can be used as a power source to provide power to an electric vehicle. For ease of installation, the battery may be installed in the electric vehicle in the form of a battery pack. Specifically, the battery pack may be installed at the bottom of the electric vehicle. In some examples, the battery pack may be used as the chassis of the electric vehicle. When the electric vehicle runs in some relatively bad road conditions, the battery pack may be damaged by collision, abrasion, etc., which may destroy the structure and performance of the battery pack, and may cause problems such as fire and explosion of the battery pack, which poses a very large safety risk.

[0034] The implementation of the present application provides a battery pack safety monitoring method, device, equipment, system, and storage medium that can determine whether to issue warning information based on the collision energy received by the bottom of a battery pack installed in an electric vehicle, and indicate that the battery pack is at risk. The battery pack safety monitoring method, device, equipment, system, and storage medium according to the present application are described in detail below.

[0035] The present application provides a battery pack safety monitoring method that can be executed by a battery pack safety monitoring device, a battery pack safety monitoring equipment, a controller, etc. The battery pack safety monitoring device, the battery pack safety monitoring equipment, the controller, etc. may be installed in an electric vehicle, and are not limited here. Figure 1 is a flowchart of an embodiment of the battery pack safety monitoring method according to the present application. As shown in Figure 1, the battery safety monitoring method may include step S101 and step S102.

[0036] In step S101, force receiving energy information of the battery pack is obtained based on the obtained force receiving data of the battery pack in the electric vehicle.

[0037] The force receiving data is for representing a force receiving distribution of the bottom of the battery pack. The force receiving distribution of the bottom of the battery pack may include a force received by the bottom of the battery pack and a force distribution. A sensor may be provided in the battery pack, and the force receiving data of the battery pack may be acquired by the sensor. The sensor may collect the force receiving data in real time, and when the electric vehicle is running or parked, the sensor may collect the force receiving data. The number, type, and installation position of the sensor in the battery pack are not limited here. The force receiving data may correspond to the type of the sensor. For example, the sensor may include one or more sensors such as a piezoelectric sensor, an acceleration sensor, etc., and are not limited here. Accordingly, the force receiving data may include pressure data and / or acceleration data, etc., that is, the force receiving data may include one or more of fluctuation data, pressure data, acceleration data, etc., and are not limited here. The fluctuation data may be for representing a mechanical wave of a collision received by the bottom of the battery pack. The pressure data may be for representing a force received by the bottom of the battery pack. The acceleration data is for representing the acceleration of the battery pack in a direction perpendicular to the bottom of the battery pack. When the bottom of the battery pack is impacted, the force data can represent the impact force received by the bottom of the battery pack. The sensor positions can be combined to determine the force and force distribution received by the bottom of the battery pack. Since the battery pack is located at the bottom of the electric vehicle, the impact received by the battery pack is mostly from the vertical direction, i.e., the direction perpendicular to the bottom of the battery pack, so that the impact received by the bottom of the battery pack can be more accurately represented by one or more of the mechanical wave received by the bottom of the battery pack in the vertical direction, the force received by the bottom of the battery pack in the vertical direction, and the acceleration of the bottom of the battery pack in the vertical direction.

[0038] In some examples, a plurality of sensors may be provided at the bottom of the battery pack. In order to make it easier for the force receiving data to represent the force receiving distribution at the bottom of the battery pack, the sensors may be provided uniformly at the bottom of the battery pack. For example, FIG. 2 is a schematic diagram of an example of the distribution of sensors at the bottom of the battery pack according to an embodiment of the present application. As shown in FIG. 2, six sensors C1 to C6 are provided at the bottom of the battery pack, the sensors C1 to C4 are provided at the four corners of the bottom of the battery pack, the sensor C5 is provided at the edge of the bottom of the battery pack and is located between the sensors C1 and C2, and the sensor C6 is provided at the edge of the bottom of the battery pack and is located between the sensors C3 and C4. The force receiving distribution at the bottom of the battery pack can be known by the force receiving data collected by the sensors C1 to C6.

[0039] The force receiving energy information is for representing the collision energy received by the bottom of the battery pack. The collision energy received by the bottom of the battery pack can be obtained by a force receiving distribution conversion calculation of the bottom of the battery pack represented by the force receiving data, that is, the force receiving energy information can be obtained. Specifically, the force receiving energy information may include the force receiving energy. The force receiving energy information may further include the force receiving position, and is not limited here.

[0040] In some instances, force-received energy information at a given time can be obtained by transforming the force-received data at that time.

[0041] In some other examples, the collision may belong to a short fluctuation process, and the short fluctuation time of the collision may be less than 1 second, so that the force receiving data in the continuous collision process can be used to perform conversion calculation to obtain the collision energy received by the bottom of the battery pack in this collision process. That is, the force receiving energy information of the battery pack in a certain period can be obtained by performing conversion based on the force receiving data obtained within this period. Accordingly, the force receiving data can be cached to easily perform conversion calculation using the force receiving data in this collision process to obtain the collision energy received by the bottom of the battery pack in this collision process.

[0042] In some examples, the force-receiving energy information of the battery pack can be obtained in real time based on the force-receiving data of the battery pack. In order to save storage space, the force-receiving energy information of the battery pack can be selectively stored. The stored force-receiving energy information of the battery pack subsequently participates in the process of determining the target level alarm condition. For example, the force-receiving energy information represented by the collision energy being greater than a collision damage minimum threshold can be stored, the collision damage minimum threshold being the minimum value of the collision energy that causes a collision on the battery pack, and the force-receiving energy information represented by the collision energy being greater than the collision damage minimum threshold can be recognized as the force-receiving energy information that causes a collision on the battery pack and adversely affects the safety of the battery pack, and such force-receiving energy information is the force-receiving energy information necessary for the safety monitoring of the battery pack, thereby eliminating the force-receiving energy information unnecessary for the safety monitoring of the battery pack.

[0043] In some other embodiments, in order to avoid occupying too many resources, such as memory resources, calculation resources, etc., to obtain the force-receiving energy information of the battery pack based on the force-receiving data of the battery pack, when the force-receiving data exceeds the normal change threshold range, the force-receiving energy information of the battery pack can be obtained based on the force-receiving data. When the bottom of the battery pack is hit, the force-receiving data of the battery pack will fluctuate significantly and exceed the normal change threshold range. The normal change threshold range is the change range of the force-receiving data when the bottom of the battery pack is not hit, and may be set according to scenarios, demands, experiences, etc., and is not limited here. The collision energy represented by the force-receiving energy information obtained by performing conversion on the upper limit of the normal change threshold range may be the minimum collision damage threshold, that is, conversion is performed only on the force-receiving data for which the collision energy represented by the force-receiving energy information obtained by conversion can be greater than the minimum collision damage threshold. The force-receiving data exceeding the normal change threshold range indicates that the bottom of the battery pack has been hit. Only when the bottom of the battery pack is hit, conversion is performed to obtain the force-receiving energy information of the battery pack, thereby obtaining the force-receiving energy information required for safety monitoring of the battery pack. There is no need to obtain force-receiving energy information that is unnecessary for the safety monitoring of the battery pack. For example, Fig. 3 is a schematic diagram of an example of the change over time of force-receiving data according to an embodiment of the present application. As shown in Fig. 3, the abscissa represents time (unit is seconds), and the ordinate represents the force-receiving data, which is about 0.2 seconds, when the battery pack is hit, the force-receiving data undergoes a large fluctuation and exceeds the normal change threshold range, and accordingly, the force-receiving energy information can be obtained based on the force-receiving data collected for about 0.2 seconds.

[0044] By removing force-receiving energy information unnecessary for safety monitoring of the battery pack and using the force-receiving energy information necessary for safety monitoring of the battery pack to perform battery safety monitoring, it is possible to reduce resources occupied by battery safety monitoring, such as memory resources and calculation resources.

[0045] In step S102, based on the force-receiving energy information, determine the warning condition at the target level, and transmit warning information corresponding to the warning condition at the target level.

[0046] The warning condition at the target level is one of the preset warning conditions at N levels that the force-receiving energy information satisfies. The warning condition at the i-th level among the N-level warning conditions is that the collision energy represented by the force-receiving energy information is within the i-th energy threshold range for m i times. N is a positive integer, and 0 < i ≤ N. When the collision energy represented by the force-receiving energy information is within the i-th energy threshold range for m i times, determine the warning condition at the i-th level as the warning condition at the target level.

[0047] When N = 1, only one level of warning condition is set. Regarding the value of m1 corresponding to the warning condition at the first level, it is not limited here and may be set to 1 or other values. When the first energy threshold range corresponding to the warning condition at the first level represents an extremely high safety risk, m1 = 1, that is, when it is within the first energy threshold range represented by the force-receiving energy information, transmit the warning information corresponding to the first warning condition. The warning information may be realized in ways such as text, image, voice, indicator lamp, etc., and is not limited here.

[0048] When N is a positive integer greater than 1, two or more levels of warning conditions are set. When N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold corresponding to the warning condition at the i-th level is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the warning condition at the (i - 1)-th level, and m i <m i-1The higher the level of the alarm condition, the higher the safety risk corresponding to this alarm condition. If multiple collisions with low safety risks are accumulated to a certain extent, a high safety risk will be reached, so the higher the level of the alarm condition, the fewer the number of times the collision energy required to trigger the issuance of alarm information falls within the corresponding energy threshold range. That is, the safety risk corresponding to the alarm condition of the i-th level is higher than the safety risk corresponding to the alarm condition of the i-1-th level. The energy threshold range corresponding to the alarm condition of each level may be set according to the scenario, demand, experience, etc., and is not limited here.

[0049] For example, N=2, and the first level alarm condition and the second level alarm condition are set accordingly. The first energy threshold range corresponding to the first level alarm condition may be set to [100J, 200J), and the second energy threshold range corresponding to the second level alarm condition may be set to [200J, +∞), where J is the unit of Joule. That is, the lower limit value of the second energy threshold range corresponding to the second level alarm condition is greater than the upper limit value of the first energy threshold range corresponding to the first level alarm condition. The lower limit value of the first energy threshold range may be an energy threshold for determining whether deformation has occurred in the housing of the battery pack. The collision energy represented by the force receiving energy information being within the first energy threshold range indicates that deformation has occurred in the housing of the battery and there is a safety risk, but the safety risk is relatively low, that is, the risk of failure of the battery pack is relatively low, and the battery pack can continue to operate normally. The lower limit value of the second energy threshold range may be an energy threshold for determining whether serious damage has occurred inside the battery pack. The collision energy represented by the force receiving energy information being within the second energy threshold range indicates that serious damage has occurred inside the battery pack, and that the operation of the electric vehicle needs to be temporarily stopped and that the battery pack needs to be inspected, replaced, or the like. m1 corresponding to the first level of warning condition is greater than m2 corresponding to the second level of warning condition, for example, m1=20, m2=1. That is, when the collision energy represented by the force receiving energy information is within the first energy threshold range, the number of times that a low safety risk has occurred reaches 20, the safety risk of the battery pack becomes high, and a warning needs to be issued by the warning information, and when the collision energy represented by the force receiving energy information is within the second energy threshold range, the number of times that a high safety risk has occurred is 1, that is, a warning needs to be issued by the warning information.

[0050] Further, for example, N=3, and the first level alarm condition, the second level alarm condition, and the third level alarm condition are set accordingly. The first energy threshold range corresponding to the first level alarm condition may be set to [100J, 150J), the second energy threshold range corresponding to the second level alarm condition may be set to [150J, 200), and the third energy threshold range corresponding to the third level alarm condition may be set to [200J, +∞). That is, the lower limit value of the third energy threshold range corresponding to the third level alarm condition is greater than the upper limit value of the second energy threshold range corresponding to the second level alarm condition, and the lower limit value of the second energy threshold range corresponding to the second level alarm condition is greater than the upper limit value of the first energy threshold range corresponding to the first level alarm condition. The lower limit value of the first energy threshold range may be an energy threshold for determining whether deformation has occurred in the housing of the battery pack. The collision energy represented by the force-receiving energy information being within the first energy threshold range indicates that deformation has occurred in the battery housing and that there is a low safety risk, i.e., the risk of failure of the battery pack is relatively low, and the battery pack can continue to operate normally. The lower limit of the second energy threshold range may be an energy threshold for determining that deformation has occurred in the battery housing and that a medium safety risk has been caused. The collision energy represented by the force-receiving energy information being within the second energy threshold range indicates that deformation has occurred in the battery housing and that there is a medium safety risk, i.e., the risk of failure of the battery pack is medium, and the battery pack can continue to operate normally. The lower limit of the third energy threshold range may be an energy threshold for determining whether serious damage has occurred inside the battery pack. The collision energy represented by the force-receiving energy information being within the third energy threshold range indicates that serious damage has occurred inside the battery pack, and that the operation of the electric vehicle needs to be temporarily stopped and the battery pack needs to be inspected, replaced, or the like.m1 corresponding to the first level alarm condition is greater than m2 corresponding to the second level alarm condition, and m2 corresponding to the second level alarm condition is greater than m3 corresponding to the third level alarm condition, for example, m1 = 20, m2 = 15, m3 = 1. That is, when the collision energy represented by the force receiving energy information is within the first energy threshold range, the number of occurrences of low safety risk reaches 20 times, the safety risk of the battery pack reaches a high risk, and an alarm needs to be issued by the alarm information; when the collision energy represented by the force receiving energy information is within the second energy threshold range, the number of occurrences of medium safety risk reaches 15 times, the safety risk of the battery pack reaches a high risk, and an alarm needs to be issued by the alarm information; when the collision energy represented by the force receiving energy information is within the third energy threshold range, the number of occurrences of high safety risk is 1 time, that is, an alarm needs to be issued by the alarm information.

[0051] N and m in the above examples i The values ​​of the energy threshold range, etc. may be set according to the scenario, demand, experience, etc., and are not limited here. In some examples, if the Nth level alarm condition corresponds to an extremely high safety risk, m N Set m to 1, i.e. N By setting it to 1, it is possible to react and process the extremely high safety risks of the battery pack more quickly, avoid the occurrence of dangerous situations such as fire and explosion in the battery pack, reduce the safety risks of the battery pack, improve the safety of the battery pack, and avoid harm to electric vehicles, drivers, passengers, etc.

[0052] Statistics may be performed on the number of times that the collision energy represented by the force receiving energy information falls within each energy threshold range, and the number of times that the collision energy represented by the force receiving energy information falls within each energy threshold range, i.e., the risk cumulative number for each level of warning condition, may be updated. The risk cumulative number is for indicating the number of times that the energy represented by the force receiving energy information falls within the corresponding energy threshold range. For example, the risk cumulative number corresponding to the i-th energy threshold range is for indicating the number of times that the collision energy represented by the force receiving energy information falls within the i-th energy threshold range, i.e., the risk cumulative number corresponding to the i-th level of warning condition is the number of times that the energy represented by the force receiving energy information falls within the i-th energy threshold range. Specifically, when the collision energy represented by the obtained force receiving energy information falls within the i-th energy threshold range, an accumulation process is performed on the risk cumulative number corresponding to the i-th energy threshold range. When the risk cumulative number corresponding to the i-th energy threshold range is m i When the target level alarm condition reaches the i-th level alarm condition, the alarm information corresponding to the i-th level alarm condition is issued. The step size of the accumulation is 1, that is, when the collision energy represented by the force receiving energy information falls within the i-th energy threshold range once, the risk accumulation count corresponding to the i-th energy threshold range is incremented by 1.

[0053] In some examples, the alarm information corresponding to different levels of alarm conditions may be the same or different, and is not limited herein. The alarm information may be transmitted to a related structure in the electric vehicle, and the related structure may execute an alarm based on the alarm information to notify relevant parties that there is a high safety risk in the battery pack. The alarm method is not limited herein and may be realized in the form of display, sound, etc. For example, the electric vehicle has a central control display or central control dashboard, and it is determined that the collision energy represented by the force receiving energy information is within the i-th energy threshold range. iWhen a collision occurs, a collision failure warning sign may be displayed on the central control display or the central control dashboard. Further, for example, if the electric vehicle has a buzzer and the collision energy represented by the impact energy information is within the i-th energy threshold range for m i When a collision occurs, the buzzer issues an alarm by means of a buzzer sound.

[0054] In some examples, the alarms corresponding to the alarm information of different levels of alarm conditions may be different. For example, when the alarm is the display of a collision failure warning sign, the failure warning signs corresponding to the alarm information of different levels of alarm conditions may be different. Further, for example, when the alarm is to emit a buzzer sound, the buzzer sounds corresponding to the alarm information of different levels of alarm conditions may be different.

[0055] In some examples, the intensity of the alarm corresponding to the alarm information of the i-th level of alarm conditions may be higher than the intensity of the alarm corresponding to the alarm information of the (i - 1)-th level of alarm conditions. For example, when the alarm corresponding to the alarm information of the (i - 1)-th level of alarm conditions is to emit a buzzer sound, the buzzer sound of the alarm corresponding to the alarm information of the i-th level of alarm conditions may be higher than the buzzer sound corresponding to the alarm corresponding to the alarm information of the (i - 1)-th level of alarm conditions.

[0056] In some cases, when i < N, when the collision energy represented by the impact energy information is within the i-th energy threshold range once, prompt information may be transmitted. The prompt information is for prompting that there is a low safety risk in the battery pack, and the user or operator can quickly obtain the state of the battery pack. The prompt intensity represented by the prompt information is lower than the prompt intensity represented by the information represented in the above embodiments.

[0057] In the embodiment of the present application, based on the force receiving data of the battery pack that can ensure the force receiving distribution at the bottom of the battery pack, force receiving energy information for ensuring the energy due to the force receiving at the bottom of the battery pack is obtained. Based on the force receiving energy information, the alarm condition of the level satisfied by the force receiving energy, i.e., the alarm condition of the target level, is determined, and alarm information corresponding to the alarm condition of the target level is issued. It is determined whether the force receiving energy information satisfies the condition of the i-th level, i.e., the collision energy represented by the force receiving energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0058] In some embodiments, to facilitate safety monitoring of the battery pack, the force-receiving data collected by the sensor may be cached. Since the sensor periodically collects the force-receiving data and the amount of the force-receiving data is relatively large, only a part of the force-receiving data may be cached to further reduce the cache resources occupied by the force-receiving data. FIG. 4 is a flowchart of another embodiment of the battery pack safety monitoring method according to the present application. The difference between FIG. 4 and FIG. 1 is that the battery pack safety monitoring method shown in FIG. 4 may further include steps S103 to S105.

[0059] In step S103, force reception data is acquired.

[0060] In step S104, if the number of cached force receiving data is smaller than a preset number threshold, the force receiving data obtained this time is cached.

[0061] After obtaining the force-receiving data, the number of cached force-receiving data may be compared with a preset number threshold. The preset number threshold is a number threshold set to limit the cache resource occupied by the cache of the force-receiving data, and may be set according to scenarios, demands, experiences, etc., and is not limited here. The number of cached force-receiving data is smaller than the preset number threshold, which indicates that the cache resource set for caching the force-receiving data is relatively sufficient, and the force-receiving data can continue to be directly cached.

[0062] In step S105, if the number of cached force receiving data is equal to or greater than a preset threshold number, the force receiving data acquired at the earliest time is deleted, and the force receiving data acquired this time is cached.

[0063] When the number of cached force-receiving data is greater than a preset number threshold, it indicates that the cache memory set for caching the force-receiving data is insufficient, and if newly acquired force-receiving data is to be cached, the force-receiving data acquired at the earliest time is deleted, and further, it is necessary to cache the newly acquired force-receiving data, thereby ensuring that other cache resources are not occupied except for the cache resources set for caching the force-receiving data, and thus saving cache resources.

[0064] For example, the collection period of force reception data by the sensor is 0.001 seconds, and the preset number threshold for each sensor is 1000. Table 1 shows the cached force reception data in the case of 1 second, and Table 2 shows the cached force reception data in the case of 1.001 seconds.

[0065] [Table 1]

[0066] [Table 2]

[0067] According to Tables 1 and 2, it is clear that the force-receiving data collected at 1.001 seconds is cached and the original force-receiving data collected at 0.001 seconds is deleted, and the cache resources occupied by the force-receiving data are saved by the limited caching of the force-receiving data. And since the deleted data is the force-receiving data with the earliest acquisition time, it does not adversely affect the subsequent safety monitoring of the battery pack.

[0068] In some embodiments, the force-receiving energy information, alarm information, etc. can be uploaded to a cloud data center to facilitate recording of the safety monitoring status of the battery pack. Figure 5 is a flow chart of yet another embodiment of the battery pack safety monitoring method according to the present application. The difference between Figure 5 and Figure 1 is that the battery pack safety monitoring method shown in Figure 5 may further include step S106.

[0069] In step S106, the safety status information of the battery pack is uploaded to the cloud data center.

[0070] The cloud data center may include, but is not limited to, a cloud data center of an electric vehicle manufacturer, a cloud data center of a battery pack manufacturer, etc. The safety status information of the battery pack is for ensuring the safety status of the battery pack, and may include, but is not limited to, force receiving energy information and / or alarm information corresponding to an alarm condition of a target level, etc. In some examples, the safety status information of the battery pack may include, but is not limited to, the presentation information in the above embodiments.

[0071] In some examples, the cloud data center can perform prediction or inspection, etc., on the safety state of the electric vehicle, the battery pack, etc. based on the received power receiving energy information and / or the alarm information corresponding to the target level alarm condition. In some examples, the safety state information of the battery pack may further include positioning information of the battery pack, etc., and the cloud data center can receive the alarm information in the safety state information of the battery pack, and further determine the position of the battery pack based on the positioning information of the battery pack, and send a communication message to a terminal device of the inspection service side that is close to the position of the battery pack, and notify the inspection service side to provide inspection service.

[0072] Through data interaction with the cloud data center, the cloud data center can grasp the safety status of the battery pack, and the cloud data center can take certain measures based on the safety information of the battery pack to realize the inspection of the battery pack.

[0073] An embodiment of the present application further provides a battery pack safety monitoring device. Figure 6 is a structural schematic diagram of an embodiment of a battery pack safety monitoring device according to the present application. As shown in Figure 6, the battery pack safety monitoring 200 may include a calculation module 201 and an alarm module 202.

[0074] The calculation module 201 may be used to obtain power-receiving energy information of the battery pack based on the acquired power-receiving data of the battery pack in the electric vehicle.

[0075] The force receiving data is intended to represent a force receiving distribution on the bottom of the battery pack, and the force receiving energy information is intended to represent a collision energy received by the bottom of the battery pack.

[0076] In some examples, the force-receiving data includes one or more of the fluctuation data, the pressure data, and the acceleration data. The fluctuation data is for representing the mechanical wave of the impact received at the bottom of the battery pack. The pressure data is for representing the force received at the bottom of the battery pack. The acceleration data is for representing the acceleration of the battery pack in the direction perpendicular to the bottom of the battery pack.

[0077] In some examples, the force-receiving energy information includes the force-receiving energy. In some other examples, the force-receiving energy information may further include the force-receiving position.

[0078] The alarm module 202 may be used to determine the alarm conditions at the target level based on the force-receiving energy information and transmit the alarm information corresponding to the alarm conditions at the target level.

[0079] The alarm conditions at the target level are one of the alarm conditions at N preset levels that the force-receiving energy information satisfies. The alarm condition at the i-th level among the N levels of alarm conditions is that the impact energy represented by the force-receiving energy information is within the i-th energy threshold range m i times, where N is a positive integer and 0 < i ≤ N.

[0080] When N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold corresponding to the alarm condition at the i-th level is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the alarm condition at the (i - 1)-th level, m i <m i-1 and so on.

[0081] In the embodiment of the present application, based on the force receiving data of the battery pack that can ensure the force receiving distribution at the bottom of the battery pack, force receiving energy information for ensuring the energy due to the force receiving at the bottom of the battery pack is obtained. Based on the force receiving energy information, the alarm condition of the level satisfied by the force receiving energy, i.e., the alarm condition of the target level, is determined, and alarm information corresponding to the alarm condition of the target level is issued. It is determined whether the force receiving energy information satisfies the condition of the i-th level, i.e., the collision energy represented by the force receiving energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0082] In some examples, the target level alarm condition is the i-th level alarm condition.

[0083] The warning module 202 may be used to perform an accumulation process on the risk accumulation number corresponding to the i-th energy threshold range when the collision energy represented by the obtained force receiving energy information is in the i-th energy threshold range, and the risk accumulation number corresponding to the i-th energy threshold range is for indicating the number of times that the collision energy represented by the force receiving energy information occurs in the i-th energy threshold range, and when the risk accumulation number corresponding to the i-th energy threshold range is m i i th level alarm condition is reached, the i th level alarm condition may be used to issue an alarm information corresponding to the i th level alarm condition.

[0084] In some instances, m N =1.

[0085] In some examples, the calculation module 201 may be used to obtain force-receiving energy information of the battery pack based on the force-receiving data when the force-receiving data exceeds the normal change threshold range.

[0086] 7 is a structural schematic diagram of another embodiment of a battery pack safety monitoring device according to the present application. The difference between FIG. 7 and FIG. 6 is that the battery pack safety monitoring device 200 shown in FIG. 7 may further include a data acquisition module 203 and a cache module 204.

[0087] The data acquisition module 203 may be used to acquire force reception data.

[0088] The cache module 204 may be used to cache the currently acquired force-receiving data when the number of cached force-receiving data is smaller than a preset number threshold, and to delete the force-receiving data acquired at the earliest time and cache the currently acquired force-receiving data when the number of cached force-receiving data is equal to or greater than the preset number threshold.

[0089] 8 is a structural schematic diagram of another embodiment of a battery pack safety monitoring device according to the present application. The difference between FIG. 8 and FIG. 6 is that the battery pack safety monitoring device 200 shown in FIG. 8 may further include a transmitting module 205.

[0090] The transmission module 205 may be used to upload the safety status information of the battery pack to a cloud data center.

[0091] The battery pack safety status information may include force energy information and / or alarm information corresponding to a target level alarm condition.

[0092] The present application provides a battery pack safety monitoring system. Figure 9 is a structural schematic diagram of an embodiment of the battery pack safety monitoring system according to the present application. As shown in Figure 9, the battery safety monitoring system may include a sensor 301, a controller 302, and a full vehicle controller 303.

[0093] The sensor 301 may be provided at the bottom of the battery pack 40 and is for collecting force reception data of the battery pack 40 .

[0094] The battery pack is located in the electric vehicle. The force receiving data is for representing the force receiving distribution of the bottom of the battery pack 40. In some examples, the force receiving data includes one or more of fluctuation data, pressure data, and acceleration data. The fluctuation data is for representing the mechanical wave of the impact received by the bottom of the battery pack 40. The pressure data is for representing the force received by the bottom of the battery pack 40. The acceleration data is for representing the acceleration of the battery pack 40 in a direction perpendicular to the bottom of the battery pack 40. The specific contents such as the installation and type of the sensor 201 may refer to the related explanations in the above embodiments, and the explanations will be omitted here.

[0095] The controller 302 is connected in communication with the sensor 301, for acquiring force receiving data from the sensor, and obtaining force receiving energy information of the battery pack 40 based on the force receiving data. In some examples, the controller 302 may be specifically realized as a microcontroller (MicroController Unit: MCU), and is not limited thereto.

[0096] The force receiving energy information is intended to represent the impact energy received by the bottom of the battery pack 40. In some examples, the force receiving energy information includes the force receiving energy. In other examples, the force receiving energy information may further include the force receiving position.

[0097] The full vehicle controller 303 is connected by communicating with the controller 302, and is configured to determine the warning conditions at the target level based on the received force energy information and transmit warning information corresponding to the warning conditions at the target level.

[0098] The warning conditions at the target level are one of the preset warning conditions at N levels that the received force energy information satisfies. The warning condition at the i-th level among the N levels of warning conditions is that the collision energy represented by the received force energy information is within the i-th energy threshold range for m i times, where N is a positive integer and 0 < i ≤ N.

[0099] When N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the i-th energy threshold corresponding to the warning condition at the i-th level is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the warning condition at the (i - 1)-th level, and m i <m i-1 is satisfied.

[0100] In some examples, as shown in FIG. 9, the battery pack safety monitoring system may further include a warning unit 304. The warning unit 304 may be used to transmit presentation information in response to the warning information. Specifically, the warning unit 304 may include a central control display, a central control dashboard, a buzzer, etc., without limitation here. The warning unit 304 may transmit the presentation information in a manner such as displaying an image or emitting a sound, and the form of the presentation information is not limited here.

[0101] In the embodiment of the present application, based on the force receiving data of the battery pack that can ensure the force receiving distribution at the bottom of the battery pack, force receiving energy information for ensuring the energy due to the force receiving at the bottom of the battery pack is obtained. Based on the force receiving energy information, the alarm condition of the level satisfied by the force receiving energy, i.e., the alarm condition of the target level, is determined, and alarm information corresponding to the alarm condition of the target level is issued. It is determined whether the force receiving energy information satisfies the condition of the i-th level, i.e., the collision energy represented by the force receiving energy information is within the i-th energy threshold range. i The occurrence of the i-th collision indicates that the collisions within the i-th energy threshold range received by the battery pack have accumulated to cause serious damage to the battery pack. The alarm information corresponding to the alarm condition level satisfied by the force received energy information can indicate the existence of a safety risk in the battery pack, so that the safety risk of the battery pack can be quickly discovered and dealt with, thereby improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, etc., which can cause harm to the electric vehicle and the driver.

[0102] When the collision energy represented by the obtained force receiving energy information is within the i-th energy threshold range, the full vehicle controller 303 performs an accumulation process on the risk accumulation number corresponding to the i-th energy threshold range, and the risk accumulation number corresponding to the i-th energy threshold range indicates the number of times that the collision energy represented by the force receiving energy information has been within the i-th energy threshold range, and when the risk accumulation number corresponding to the i-th energy threshold range is m i may be used to issue alarm information corresponding to the i-th level alarm condition when the target level alarm condition is reached. The target level alarm condition is the i-th level alarm condition.

[0103] In some instances, m N =1.

[0104] In some examples, the controller 302 may be used to obtain force-receiving energy information of the battery pack based on the force-receiving data when the force-receiving data exceeds the normal change threshold range.

[0105] In some examples, the controller 302 may further be used to acquire force-receiving data, and if the number of cached force-receiving data is less than a preset number threshold, cache the currently acquired force-receiving data, and if the number of cached force-receiving data is equal to or greater than the preset number threshold, delete the force-receiving data with the earliest acquisition time and cache the currently acquired force-receiving data.

[0106] 10 is a structural schematic diagram of another embodiment of a battery pack safety monitoring system according to the present application. The difference between FIG. 10 and FIG. 9 is that the battery pack safety monitoring system shown in FIG. 10 may further include a cloud data center 305.

[0107] The cloud data center 305 is communicatively connected to the full vehicle controller 303 for obtaining safety status information of the battery pack from the full vehicle controller.

[0108] The battery pack safety status information includes force received energy information and / or alarm information corresponding to a target level alarm condition.

[0109] For specific details regarding the battery pack safety monitoring method in the battery pack safety monitoring system, the relevant explanations in the above embodiments may be referred to, and therefore the explanation will be omitted here.

[0110] An embodiment of the present application further provides a battery pack safety monitoring device. Figure 11 is a structural schematic diagram of an embodiment of a battery pack safety monitoring device according to the present application. As shown in Figure 11, the battery pack safety monitoring device 400 includes a memory 401, a processor 402, and a computer program that can be stored in the memory 401 and run on the processor 402.

[0111] In one example, the processor 402 may include a central processing unit (CPU) or an application specific integrated circuit (ASIC), or may be disposed in one or more integrated circuits that implement embodiments of the present application.

[0112] The memory 401 may include Read-Only Memory (ROM), Random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash devices, electrical, optical, or other physical / tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and which software, when executed (e.g., by one or more processors), is operable to perform the operations described with reference to the battery pack safety monitoring method according to the present application.

[0113] The processor 402 is used to read the executable program code stored in the memory 401, run a computer program corresponding to the executable program code, and realize the battery pack safety monitoring method in the above embodiment.

[0114] In one example, the battery pack safety monitoring device 400 may further include a communication interface 403 and a bus 404. Here, as shown in Fig. 11, the memory 401, the processor 402, and the communication interface 403 are connected via the bus 404 to complete communication therebetween.

[0115] The communication interface 403 is mainly for realizing communication between each module, device, unit and / or device in the embodiment of the present application. Through the communication interface 403, an input device and / or an output device may be accessed.

[0116] The bus 404 may include hardware, software, or both, and couples the components of the battery pack safety monitoring device 400 together. For example, without limitation, bus 404 may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an unlimited bandwidth interconnect, a Low pin count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-E) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable bus, or a combination of two or more of the foregoing. Where appropriate, bus 404 may include one or more buses. Although embodiments of the present application have described and illustrated a particular bus, the present application contemplates any suitable bus or interconnect.

[0117] The embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer program instructions, which, when executed by a processor, can realize the battery pack safety monitoring method in the above embodiment and achieve the same technical effect. In order to avoid duplication of explanation, the description will be omitted here. Here, examples of the computer-readable storage medium may include non-transitory computer-readable storage media, such as read-only memory (abbreviated as ROM), random access memory (abbreviated as RAM), magnetic disk, optical disk, etc., but are not limited thereto.

[0118] The embodiments of the present application further provide an electric vehicle, which may include the battery pack safety monitoring device in the above embodiments, and the specific content may refer to the relevant description in the above embodiments, and the description will be omitted here.

[0119] Obviously, each embodiment in this specification is described in a stepwise manner, and the same or similar parts between each embodiment may be referred to each other, and each embodiment will be described focusing on the differences with other embodiments. For the device embodiment, the system embodiment, the equipment embodiment, the computer-readable storage medium embodiment, and the electric vehicle embodiment, the relevant parts may be referred to the description of the method embodiment. The present application is not limited to the specific steps and structures described above and shown in the drawings. Those skilled in the art may make various changes, modifications, and additions or change the order between steps after understanding the gist of the present application. And, for the sake of brevity, detailed descriptions of known method technologies are omitted here.

[0120] The above describes each aspect of the present application with reference to the flowcharts and / or block diagrams of the method, apparatus (system) and computer program product of the embodiment of the present application. It should be understood that each block in the flowcharts and / or block diagrams and combinations of blocks and flowcharts in the flowcharts and / or block diagrams may be realized by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, or other programmable data processing device to generate a machine, whereby the instructions executed by the processor of the computer or other programmable data processing device can realize the functions / operations specified in one or more blocks of the flowcharts and / or block diagrams. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It should be further understood that each block in the flowcharts and / or block diagrams and combinations of blocks and flowcharts in the block diagrams and / or flowcharts may be realized by dedicated hardware performing the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0121] As can be understood by those skilled in the art, the above embodiments are all illustrative and not restrictive. Different technical features appearing in different embodiments may be combined to obtain beneficial effects. Those skilled in the art can understand and realize other variations of the disclosed embodiments from studying the drawings, the specification, and the claims. In the claims, the term "comprises" does not exclude other devices or steps, the quantifier "a" does not exclude a plurality, and the terms "first" and "second" are intended to specify names rather than to indicate any particular order. Any reference signs in the claims should not be interpreted as limiting the scope of protection. The functions of multiple parts described in the claims may be realized by a single hardware or software module. The presence of some specific technical features in different dependent claims does not mean that these technical features cannot be combined to obtain beneficial effects.

Claims

[Claim 1] A method for monitoring safety of a battery pack, comprising: Obtaining force-receiving energy information of the battery pack based on the force-receiving data of the battery pack in the electric vehicle, the force-receiving data representing a force-receiving distribution of a bottom portion of the battery pack, and the force-receiving energy information representing a collision energy received by the bottom portion of the battery pack; Based on the force-receiving energy information, a target level warning condition is determined, and warning information corresponding to the target level warning condition is issued. The target level warning condition is one level warning condition among N levels of preset warning conditions that is satisfied by the force-receiving energy information, and the i-th level warning condition among the N levels of warning conditions is that the collision energy represented by the force-receiving energy information is within the i-th energy threshold range. ｉ times, where N is a positive integer, and 0<i≦N; where N is a positive integer greater than 1, and 1<i≦N, the lower limit of the i-th energy threshold corresponding to the i-th level of the alarm condition is greater than the upper limit of the i-1-th energy threshold range corresponding to the i-1-th level of the alarm condition, and m ｉ <m ｉ－１ A method for monitoring the safety of a battery pack.

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