Battery pack safety monitoring method, device, equipment, system, and storage medium

Abstract

This application discloses a method, apparatus, device, system, and storage medium for safety monitoring of a battery pack, belonging to the field of battery technology. This method includes obtaining the force-receiving energy information of the battery pack in an electric vehicle based on the acquired force-receiving data of the battery pack, determining an alarm condition at a target level based on the force-receiving energy information, transmitting alarm information corresponding to the alarm condition at the target level, and the alarm condition at the target level is one of the preset N levels of alarm conditions that the force-receiving energy information satisfies. The alarm condition at the i-th level is that the collision energy represented by the force-receiving energy information is within the i-th energy threshold range, and it includes the condition that this occurs m i times. When N>1 and 1<i≤N, the lower limit value of the i-th energy threshold range 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, and m i <m i-1 is included.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 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 technologies, the application fields of batteries are becoming increasingly 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. If the electric vehicle encounters extremely poor road conditions during its travel, the battery pack may be damaged by collisions, scrapes, etc., which may destroy the structure and performance of the battery pack and cause a significant safety risk to 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 safety monitoring of 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, an alarm condition at a target level is determined, and alarm information corresponding to the alarm condition at the target level is transmitted. The alarm condition at the target level is one of the preset N levels of alarm conditions that the force-receiving energy information satisfies. 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 for m i times, where N is a positive integer, and 0 < i ≤ N. 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, m i <m i-1 is.

[0007] That the force-receiving energy information satisfies the condition of the i-th level, that is, the collision energy represented by the force-receiving energy information is within the i-th energy threshold range for m i times means 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 alarm information corresponding to the alarm 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; 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 in the i-th energy threshold range; and when the risk accumulation number corresponding to the i-th energy threshold range is m i and issuing an alarm information corresponding to the i-th level alarm condition when the i-th level alarm condition is reached.

[0009] By performing accumulation processing on the 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 made easier, and the cumulative number of times that the risk corresponding to the i-th energy threshold range is m in the i-th level warning condition. i If the number of times reaches this number, warning information can be sent accurately and quickly.

[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. The higher the level of the warning condition, the fewer times the collision energy required to trigger the issuance of warning information must be within the corresponding energy threshold range. If the collision energy represented by the force-receiving energy information reaches the most serious collision standard, a single collision can cause severe damage to the battery pack. By setting the threshold for the number of times within the corresponding energy threshold range for the highest level of warning condition to 1, high safety risks to the battery pack due to serious collisions can be more quickly detected and dealt with promptly.

[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] If the force-receiving data exceeds the normal change threshold range, it indicates that the bottom of the battery pack has been hit. Only when the bottom of the battery pack has been hit is the conversion performed to obtain the force-receiving energy information of the battery pack, thereby obtaining the force-receiving energy information necessary for battery pack safety monitoring. There is no need to obtain force-receiving energy information that is not necessary for battery pack safety monitoring, and resources occupied by battery safety monitoring, such as memory resources and calculation resources, 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; if the number of cached force-receiving data is less 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 earliest 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. In this way, in addition to setting up cache resources for caching the force-receiving data, it is ensured that other cache resources are not occupied, and cache resources are 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 that the bottom of the battery pack receives, the pressure data represents the force that the bottom of the battery pack receives, 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. Based on the safety information of the battery pack, the cloud data center can further take certain measures 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 force energy information includes the received force energy, and the received force energy information further includes the received force 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 force energy information of the battery pack in the obtained electric vehicle based on the received force data of the battery pack. The received force data is for representing the received force distribution at the bottom of the battery pack, and the received force energy information is a calculation module for representing the collision energy received by the battery pack. Based on the received force energy information, it is an alarm module for determining the alarm condition of the target level and transmitting the alarm information corresponding to the alarm condition of the target level. The alarm condition of the target level is one of the preset N levels of alarm conditions that the received force energy information satisfies. The i-th level of alarm condition among the N levels of alarm conditions is that the collision energy represented by the received force energy information is within the i-th energy threshold range and has occurred m i times, 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, and m i <m i-1 is.

[0021] The fact that the received force energy information satisfies the i-th level of condition, that is, the collision energy represented by the received force energy information is within the i-th energy threshold range and has occurred m iThe occurrence of multiple collisions within the ith energy threshold range received by the battery pack indicates that the cumulative collisions can cause serious damage to the battery pack. Alarm information corresponding to the alarm conditions at the level satisfied by the force-receiving energy information can indicate the existence of a safety risk in the battery pack, enabling the rapid discovery and prompt handling of the safety risk of the battery pack, improving the safety of the battery pack, and avoiding damage to the electric vehicle and the driver caused by the ignition or explosion of the battery pack.

[0022] According to the third aspect, the safety monitoring system for the battery pack according to the embodiments 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. The force-receiving data represents the force-receiving distribution at the bottom of the battery pack. The battery pack includes a sensor located in an 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. The force-receiving energy information represents the collision energy received at the bottom of the battery pack. The battery pack further includes a full-behavior controller communicatively connected to the controller 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. The alarm conditions at the target level are one of the preset N levels of alarm conditions satisfied by the force-receiving energy information. The ith level of alarm conditions among the N levels of alarm conditions is that the collision energy represented by the force-receiving energy information is within the ith energy threshold range, including the condition that multiple collisions have occurred. N is a positive integer, and 0 < i ≤ N. Here, when N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the ith energy threshold range corresponding to the ith level of alarm conditions is greater than the upper limit value of the (i - 1)th energy threshold range corresponding to the (i - 1)th level of alarm conditions. i When multiple collisions have occurred, N is a positive integer, and 0 < i ≤ N. Here, when N is a positive integer greater than 1 and 1 < i ≤ N, the lower limit value of the ith energy threshold range corresponding to the ith level of alarm conditions is greater than the upper limit value of the (i - 1)th energy threshold range corresponding to the (i - 1)th level of alarm conditions. i <m i-1 That 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or 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, from the full vehicle controller, safety status information of the battery pack, including force-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 storing computer program instructions, 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or 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 program instructions, when executed by a processor, realizing the battery pack safety monitoring method according to the second aspect.

[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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or 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 the energy received by the 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 for the level satisfied by the force receiving energy, i.e., a target level alarm condition, is determined, and alarm information corresponding to the target level alarm condition is issued. It is determined that the force receiving energy information satisfies the i-th level condition, 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition that the force received energy information meets can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with promptly, thereby improving the safety of the battery pack. [Brief explanation of the drawings]

[0030] In order to more clearly describe 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 any creative effort.

[0031]

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[0032] The following describes in detail the features and exemplary embodiments of each aspect of the present application. 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 the purpose of interpreting the present application and do not limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the examples is merely intended to provide a better understanding of the present application by illustrating examples of the present application.

[0033] With the development of new energy technologies, the application fields of batteries are becoming increasingly broad, for example, they can be used as a power source to power electric vehicles. For ease of installation, batteries may be installed in electric vehicles in the form of a battery pack. Specifically, the battery pack may be installed at the bottom of the electric vehicle. In some cases, the battery pack may serve as the chassis of the electric vehicle. When electric vehicles are driven on relatively poor road conditions, the battery pack may be damaged by collisions, scrapes, etc., which may destroy the structure and performance of the battery pack, and may cause problems such as fire or explosion of the battery pack, posing a significant safety risk.

[0034] The present application provides a battery pack safety monitoring method, device, equipment, system, and storage medium that can determine whether to issue an alarm 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 device, a controller, or the like. The battery pack safety monitoring device, the battery pack safety monitoring device, the controller, or the like may be installed in an electric vehicle, and is not limited thereto. FIG. 1 is a flowchart of one embodiment of the battery pack safety monitoring method according to the present application. As shown in FIG. 1, the battery safety monitoring method may include step S101 and step S102.

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

[0037] The force reception data represents a force reception distribution at the bottom of the battery pack. The force reception distribution at 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 to acquire the force reception data of the battery pack. The sensor may collect the force reception data in real time, and may collect the force reception data when the electric vehicle is running or parking. The number, type, and installation location of the sensors on the battery pack are not limited herein. The force reception data may correspond to the type of sensor. For example, the sensor may include one or more sensors such as a piezoelectric sensor and an acceleration sensor, and the like, and the like. Accordingly, the force reception data may include pressure data and / or acceleration data, etc., i.e., the force reception data may include one or more of fluctuation data, pressure data, acceleration data, etc., and the like, and the like, and the like, and the fluctuation data may represent a mechanical wave of a collision received by the bottom of the battery pack. The pressure data may represent a force received by the bottom of the battery pack. The acceleration data represents 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 hit, the force data can represent the impact force received by the bottom of the battery pack. The sensor positions can be linked to determine the force and force distribution received by the bottom of the battery pack. Because the battery pack is located at the bottom of the electric vehicle, the impact received by the battery pack is often in the vertical direction, i.e., perpendicular to the bottom of the battery pack. Therefore, the impact received by the bottom of the battery pack can be more accurately represented by one or more of the mechanical waves 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, multiple sensors may be provided on the bottom of the battery pack. To make it easier for force reception data to represent the force reception distribution on the bottom of the battery pack, the sensors may be uniformly provided on the bottom of the battery pack. For example, FIG. 2 is a schematic diagram of an example of the distribution of sensors on the bottom of a battery pack according to an embodiment of the present application. As shown in FIG. 2, six sensors C1 to C6 are provided on the bottom of the battery pack. Sensors C1 to C4 are provided at the four corners of the bottom of the battery pack. Sensor C5 is provided on the edge of the bottom of the battery pack and is located between sensors C1 and C2. Sensor C6 is provided on the edge of the bottom of the battery pack and is located between sensors C3 and C4. The force reception distribution on the bottom of the battery pack can be determined from the force reception data collected by sensors C1 to C6.

[0039] The force receiving energy information represents the impact energy received by the bottom of the battery pack. The impact energy received by the bottom of the battery pack can be obtained by calculating the force receiving distribution of the bottom of the battery pack represented by the force receiving data, i.e., 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 thereto.

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

[0041] In some other examples, the collision may be a short-fluctuation process, and the short fluctuation time of the collision may be less than one second. Therefore, the force reception data in the continuous collision process can be used to perform a conversion calculation to obtain the collision energy received by the bottom of the battery pack in this collision process. That is, by performing a conversion based on the force reception data obtained within a certain period, the force reception energy information of the battery pack within this period can be obtained. Accordingly, by caching the force reception data, it is possible to easily perform a conversion calculation using the force reception 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, based on the force-receiving data of the battery pack, force-receiving energy information of the battery pack can be obtained in real time. 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 is subsequently used to determine a target level alarm condition. For example, force-receiving energy information representing a collision energy greater than a minimum collision damage threshold can be stored. The minimum collision damage threshold is the minimum value of collision energy that will cause a collision to the battery pack. Force-receiving energy information representing a collision energy greater than the minimum collision damage threshold can be recognized as force-receiving energy information that will cause a collision to the battery pack and adversely affect the safety of the battery pack. Such force-receiving energy information is force-receiving energy information necessary for safety monitoring of the battery pack, thereby eliminating force-receiving energy information unnecessary for safety monitoring of the battery pack.

[0043] In some other embodiments, to avoid occupying too many resources (e.g., storage resources, computation resources) for obtaining the force energy information of the battery pack based on the force data of the battery pack, if the force data exceeds the normal change threshold range, the force energy information of the battery pack can be obtained based on the force data. If the bottom of the battery pack is hit, the force 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 data when the bottom of the battery pack is not hit, and may be set based on scenarios, needs, experience, etc., and is not limited thereto. The collision energy represented by the force energy information obtained by converting the upper limit of the normal change threshold range may be the minimum collision damage threshold. That is, only force data whose collision energy represented by the force energy information obtained by conversion can be greater than the minimum collision damage threshold is converted. If the force data exceeds the normal change threshold range, it indicates that the bottom of the battery pack has been hit. Only if the bottom of the battery pack is hit, conversion is performed to obtain the force energy information of the battery pack, thereby obtaining the force energy information required for safety monitoring of the battery pack. There is no need to obtain force-received energy information that is not necessary for safety monitoring of the battery pack. For example, Figure 3 is a schematic diagram of an example of changes in force-received data over time according to an embodiment of the present application. As shown in Figure 3, the abscissa represents time (unit: seconds), and the ordinate represents force-received data. At approximately 0.2 seconds, when the battery pack is hit, the force-received data undergoes a significant fluctuation, exceeding the normal change threshold range. Accordingly, force-received energy information can be obtained based on the force-received data collected for approximately 0.2 seconds.

[0044] By removing force-receiving energy information unnecessary for safety monitoring of the battery pack and using 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 warning conditions at N preset levels 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 for m i times. N is a positive integer, and 0 < i ≤ N. If 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 a very 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 that alarm condition. Since multiple low-risk collisions accumulate to a certain extent to reach a high safety risk, the higher the level of the alarm condition, the fewer times the collision energy required to trigger the issuance of alarm information falls within the corresponding energy threshold range. In other words, the safety risk corresponding to an i-th level alarm condition is higher than the safety risk corresponding to an i-1-th level alarm condition. The energy threshold range corresponding to each level alarm condition may be set based on scenarios, demands, experience, etc., and is not limited here.

[0049] For example, N=2, and a first level alarm condition and a second level alarm condition are set accordingly. A first energy threshold range corresponding to the first level alarm condition may be set to [100 J, 200 J], and a second energy threshold range corresponding to the second level alarm condition may be set to [200 J, +∞], where J is the unit of joules. 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 battery pack housing. If the collision energy represented by the force energy information is within the first energy threshold range, deformation has occurred in the battery housing and a safety risk exists, but the safety risk is relatively low, i.e., the risk of battery pack failure 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. When the collision energy represented by the force-receiving energy information falls within the second energy threshold range, it indicates that serious damage has occurred inside the battery pack, and that operation of the electric vehicle must be temporarily suspended and that processing such as inspection or replacement of the battery pack must be performed. m1, which corresponds to the first level of warning condition, is greater than m2, which corresponds to the second level of warning condition, e.g., m1 = 20, m2 = 1. That is, when the collision energy represented by the force-receiving energy information falls within the first energy threshold range, the number of times a low safety risk has occurred reaches 20, the safety risk of the battery pack is high, and a warning must be issued via warning information. When the collision energy represented by the force-receiving energy information falls within the second energy threshold range, the number of times a high safety risk has occurred is 1, and a warning must be issued via warning information.

[0050] Further, for example, N=3, and first, second, and third level alarm conditions are set accordingly. A first energy threshold range corresponding to the first level alarm condition may be set to [100 J, 150 J), a second energy threshold range corresponding to the second level alarm condition may be set to [150 J, 200 J), and a third energy threshold range corresponding to the third level alarm condition may be set to [200 J, +∞). That is, the lower limit of the third energy threshold range corresponding to the third level alarm condition is greater than the upper limit of the second energy threshold range corresponding to the second level alarm condition, and the lower limit of the second energy threshold range corresponding to the second level alarm condition is greater than the upper limit of the first energy threshold range corresponding to the first level alarm condition. The lower limit of the first energy threshold range may be an energy threshold for determining whether deformation has occurred in the housing of the battery pack. When the collision energy represented by the force energy information is within a first energy threshold range, it indicates that deformation has occurred in the battery housing and that a low safety risk exists, i.e., the risk of battery pack failure 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 pack housing and that a medium safety risk exists. When the collision energy represented by the force energy information is within the second energy threshold range, it indicates that deformation has occurred in the battery housing and that a medium safety risk exists, i.e., the risk of battery pack failure 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. When the collision energy represented by the force energy information is within the third energy threshold range, it indicates that serious damage has occurred inside the battery pack, and it is necessary to temporarily suspend operation of the electric vehicle and perform measures such as battery pack inspection or replacement.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, and 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 times a low safety risk has occurred reaches 20, and the safety risk of the battery pack reaches a high risk, and an alarm needs to be issued via alarm information; when the collision energy represented by the force receiving energy information is within the second energy threshold range, the number of times a medium safety risk has occurred reaches 15, and the safety risk of the battery pack reaches a high risk, and an alarm needs to be issued via alarm information; and when the collision energy represented by the force receiving energy information is within the third energy threshold range, the number of times a high safety risk has occurred is 1, and an alarm needs to be issued via 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 ≠1, it is possible to react and deal with extremely high safety risks of the battery pack more quickly, avoid dangerous situations such as fire or explosion of the battery pack, reduce the safety risks of the battery pack, improve the safety of the battery pack, and avoid harm to the electric vehicle, driver, passengers, etc.

[0052] Statistics may be run on the number of times the collision energy represented by the force receiving energy information falls within each energy threshold range, and the number of times the collision energy represented by the force receiving energy information falls within each energy threshold range, i.e., the cumulative risk count for each level of warning condition, may be updated. The cumulative risk count indicates the number of times the energy represented by the force receiving energy information falls within the corresponding energy threshold range. For example, the cumulative risk count corresponding to the i-th energy threshold range indicates the number of times the collision energy represented by the force receiving energy information falls within the i-th energy threshold range, i.e., the cumulative risk count corresponding to the i-th level of warning condition is the number of times 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 cumulative risk count corresponding to the i-th energy threshold range. If the cumulative risk count 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, once the collision energy represented by the force receiving energy information falls within the i-th energy threshold range, the risk accumulation count corresponding to the i-th energy threshold range is incremented by 1.

[0053] In some examples, the warning information corresponding to different levels of warning conditions may be the same or different, and is not limited thereto. The warning information may be transmitted to a related structure in the electric vehicle, and the related structure may execute a warning based on the warning information to notify relevant parties that there is a high safety risk in the battery pack. The warning method is not limited thereto, and may be realized in the form of a display, a sound, or the like. 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. iIf 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 an 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 If a collision occurs, the buzzer emits an alarm by making 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, if 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, if 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, if 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 that the force receiving energy satisfies, 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 that 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or the driver.

[0058] In some embodiments, to facilitate safety monitoring of the battery pack, force-receiving data collected by the sensor may be cached. Because the sensor periodically collects force-receiving data and the amount of force-receiving data is relatively large, only a portion 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 a 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 acquired this time is cached.

[0061] After the forced data is obtained, the number of cached forced data may be compared with a preset threshold value. The preset threshold value is a threshold value set to limit the cache resources occupied by the cache of forced data, and may be set according to scenarios, needs, experience, etc., and is not limited thereto. If the number of cached forced data is smaller than the preset threshold value, it indicates that the cache resources set for caching the forced data are relatively sufficient, and the forced 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] If 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 must be deleted, and further, the newly acquired force-receiving data must be cached, ensuring that other cache resources than those set for caching the force-receiving data are not occupied, thereby saving cache resources.

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

[0065] [Table 1]

[0066] [Table 2]

[0067] According to Tables 1 and 2, the force-receiving data collected at 1.001 seconds is cached and the original force-receiving data collected at 0.001 seconds is deleted. This restrictive caching of force-receiving data saves cache resources. Furthermore, since the deleted force-receiving data is the earliest acquired data, it does not adversely affect subsequent safety monitoring of the battery pack.

[0068] In some embodiments, the power 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 flowchart 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 battery pack safety status information is for ensuring the safety status of the battery pack and may include, but is not limited to, power receiving energy information and / or alarm information corresponding to a target level alarm condition, etc. In some examples, the battery pack safety status information may include, but is not limited to, the presentation information in the above embodiments.

[0071] In some examples, the cloud data center can predict or inspect the safety status of the electric vehicle, battery pack, etc. based on the received power receiving energy information and / or alarm information corresponding to the target level alarm condition. In some examples, the safety status information of the battery pack may further include positioning information of the battery pack, etc. The cloud data center can receive the alarm information in the safety status information of the battery pack, and further determine the location 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 location of the battery pack, notifying 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 then take certain measures based on the safety information of the battery pack to inspect 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 one embodiment of a battery pack safety monitoring device according to the present application. As shown in Figure 6, the battery pack safety monitoring device 200 may include a calculation module 201 and an alarm module 202.

[0074] The calculation module 201 may be used to obtain the 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 indicates the force receiving distribution at the bottom of the battery pack, and the force receiving energy information indicates the 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 for 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, and m i <m i-1 is satisfied.

[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 that the force receiving energy satisfies, 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 that 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or the driver.

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

[0083] When the collision energy represented by the obtained force receiving energy information is in the i-th energy threshold range, 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, 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 may be used to issue an alarm information corresponding to the i-th level alarm condition when the i-th level alarm condition is reached.

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

[0085] In some examples, the calculation module 201 may be used to obtain the force-receiving energy information of the battery pack based on the force-receiving data when the force-receiving data exceeds the normal variation 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 force-receiving data currently acquired when the number of cached force-receiving data is smaller than a preset threshold value, and to delete the force-receiving data acquired earliest and cache the force-receiving data currently acquired when the number of cached force-receiving data is equal to or greater than a preset threshold value.

[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 powered energy information and / or alarm information corresponding to target level alarm conditions.

[0092] The present application provides a battery pack safety monitoring system. Fig. 9 is a structural schematic diagram of one embodiment of the battery pack safety monitoring system according to the present application. As shown in Fig. 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 an electric vehicle. The force receiving data represents a force receiving distribution at 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 represents a mechanical wave of a collision received by the bottom of the battery pack 40. The pressure data represents a force received by the bottom of the battery pack 40. The acceleration data represents an acceleration of the battery pack 40 in a direction perpendicular to the bottom of the battery pack 40. For specific details such as the installation and type of the sensor 201, please refer to the related descriptions in the above embodiments, and further description will be omitted here.

[0095] The controller 302 is communicatively connected to the sensor 301, acquires force receiving data from the sensor, and obtains 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 collision 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 a target-level warning condition based on the received force energy information and transmit warning information corresponding to the target-level warning condition.

[0098] The target-level warning condition is one of the preset N-level warning conditions that the received force energy information satisfies. The i-th level warning condition among the N-level 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 i-th level warning condition is greater than the upper limit value of the (i - 1)-th energy threshold range corresponding to the (i - 1)-th level warning condition, 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 an alarm unit 304. The alarm unit 304 may be used to transmit prompt information in response to the warning information. Specifically, the alarm unit 304 may include a central control display, a central control dashboard, a buzzer, etc., without limitation here. The alarm unit 304 may transmit prompt information in a manner such as displaying an image or emitting a sound, and the form of the prompt 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 that the force receiving energy satisfies, 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 that 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 battery pack has been subjected to a cumulative number of collisions within the i-th energy threshold range, causing serious damage to the battery pack. Alarm information corresponding to the alarm condition level met by the force received energy information can indicate that there is a safety risk in the battery pack, allowing the safety risk in the battery pack to be quickly discovered and dealt with, improving the safety of the battery pack and preventing the battery pack from catching fire, exploding, or causing harm to the electric vehicle or 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 the 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 predetermined number threshold, cache the force-receiving data acquired this time, and if the number of cached force-receiving data is equal to or greater than the predetermined number threshold, delete the force-receiving data acquired the earliest and cache the force-receiving data acquired this time.

[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 powered energy information and / or alarm information corresponding to target level alarm conditions.

[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 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 one embodiment of a battery pack safety monitoring device according to the present application. As shown in Figure 11, a battery pack safety monitoring device 400 includes a memory 401, a processor 402, and a computer program stored in the memory 401 and operable 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 located on 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, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, which, 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 the 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 between them.

[0115] The communication interface 403 is mainly for realizing communication between the modules, devices, units and / or equipment in the embodiments of the present application. Input devices and / or output devices may be accessed through the communication interface 403.

[0116] Bus 404 may include hardware, software, or both, and couples the components of 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 these. Where appropriate, bus 404 may include one or more buses. Although the embodiments of this application have described and illustrated a particular bus, this application contemplates any suitable bus or interconnect.

[0117] An 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, realize the battery pack safety monitoring method of the above embodiment and achieve the same technical effect. To avoid repetition, further description is omitted here. Here, examples of the computer-readable storage medium may include, but are not limited to, non-transitory computer-readable storage media, such as read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[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 contents may refer to the relevant descriptions in the above embodiments, and the description will be omitted here.

[0119] Obviously, each embodiment in this specification will be described step by step, and the same or similar parts between the embodiments may be referred to, and each embodiment will be described focusing on the differences from other embodiments. For the device embodiments, system embodiments, equipment embodiments, computer-readable storage medium embodiments, and electric vehicle embodiments, relevant parts may be referred to the description of the method embodiments. 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 of steps, after understanding the spirit of the present application. Therefore, for the sake of brevity, detailed descriptions of known method technologies will be omitted here.

[0120] The above describes various aspects of the present application with reference to flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments 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 implemented 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 produce a machine whereby the instructions, executed by the processor of the computer or other programmable data processing device, can implement 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 implemented by dedicated hardware that performs the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0121] As will be understood by those skilled in the art, the above embodiments are 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 description, 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 used for naming purposes only and do not imply any particular order. Any reference signs in the claims should not be construed as limiting the scope of protection. The functions of multiple parts recited in the claims may be realized by a single hardware or software module. The presence of certain technical features in different dependent claims does not mean that these technical features cannot be combined to obtain beneficial effects. Note that the description of the claims during the domestic transfer of this application is as follows. 〔Claim 1〕 A method for safety monitoring of a battery pack, comprising: Based on the obtained force-receiving data of the battery pack in an electric vehicle, obtaining the force-receiving energy information of the battery pack, wherein 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, determining an alarm condition at a target level and transmitting alarm information corresponding to the alarm condition at the target level, wherein the alarm condition at the target level is one of the preset N levels of alarm conditions that the force-receiving energy information satisfies, and the alarm condition at the i-th level 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 for m i times, N is a positive integer, and 0 < i ≤ N; Here, 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, and m i <m i-1 A method for safety monitoring of a battery pack as described above. 〔Claim 2〕 The alarm condition at the target level is the alarm condition at the i-th level, The above-mentioned determining an alarm condition at a target level based on the force-receiving energy information and transmitting alarm information corresponding to the alarm condition at the target level includes: When the collision energy represented by the obtained force-receiving energy information is within the i-th energy threshold range, performing an accumulation process on the risk accumulation count corresponding to the i-th energy threshold range, wherein the risk accumulation count 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 within the i-th energy threshold range; When the risk accumulation count corresponding to the i-th energy threshold range reaches m i Transmitting alarm information corresponding to the alarm condition at the i-th level. The method according to claim 1. 〔Claim 3〕 m N 2. The method of claim 1, wherein: [Claim 4] 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 includes: The method of claim 1 , further comprising: obtaining the 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. [Claim 5] Before obtaining the 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 the force reception data; When the number of cached force receiving data is smaller than a preset number threshold, caching the force receiving data acquired this time; The method of claim 1, further comprising: if the number of cached force-receiving data is equal to or greater than a predetermined threshold number, deleting the force-receiving data acquired at the earliest time, and caching the force-receiving data acquired this time. [Claim 6] The force receiving data is The data includes one or more of fluctuation data, pressure data, and acceleration data; The method of claim 1, wherein the fluctuation data represents a mechanical wave of a collision received by the bottom of the battery pack, the pressure data represents a force received by the bottom of the battery pack, and the acceleration data represents an acceleration of the battery pack in a direction perpendicular to the bottom of the battery pack. [Claim 7] The method of claim 1 , further comprising uploading the power-receiving energy information and / or safety status information of the battery pack, including alarm information corresponding to the target level alarm condition, to a cloud data center. [Claim 8] 8. The method according to claim 1, wherein the force receiving energy information includes a force receiving energy, and the force receiving energy information further includes a force receiving position. [Claim 9] A safety monitoring device for a battery pack, comprising: a calculation module for obtaining force receiving energy information of a battery pack in an electric vehicle based on acquired force receiving data of the battery pack, the force receiving data representing a force receiving distribution at a bottom of the battery pack, and the force receiving energy information representing a collision energy received by the bottom of the battery pack; An alarm module for determining an alarm condition at a target level based on the received force energy information and transmitting alarm information corresponding to the alarm condition at the target level, wherein the alarm condition at the target level is one of the preset alarm conditions at N levels that the received force energy information satisfies, and the alarm condition at the i-th level among the N levels of alarm 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, N is a positive integer, and 0 < i ≤ N, including an alarm module Here, 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, and m i <m i-1 is a safety monitoring device for a battery pack [Claim 10] A safety monitoring system for a battery pack, A sensor provided at the bottom of the battery pack for collecting the received force data of the battery pack, wherein the received force data is for representing the received force distribution at the bottom of the battery pack, and the battery pack is a sensor located in an electric vehicle, A controller communicatively connected to the sensor, obtaining the received force data from the sensor, and obtaining the received force energy information of the battery pack based on the received force data, wherein the received force energy information is for representing the collision energy received at the bottom of the battery pack A full-beak controller communicatively connected to the controller, determining an alarm condition at a target level based on the received force energy information, and transmitting alarm information corresponding to the alarm condition at the target level, wherein the alarm condition at the target level is one of the preset alarm conditions at N levels that the received force energy information satisfies, and the alarm condition at the i-th level among the N levels of alarm 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, N is a positive integer, and 0 < i ≤ N, including a full-beak controller Here, 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 of the i-th level is greater than the upper limit value of the i - 1-th energy threshold range corresponding to the alarm condition of the i - 1-th level, m i <m i-1 is a safety monitoring system for a battery pack. [Claim 11] The system according to claim 10, further comprising a cloud data center connected in communication with the full - vehicle controller to obtain safety state information of the battery pack including the force - receiving energy information and / or alarm information corresponding to the alarm condition of the target level from the full - vehicle controller. [Claim 12] A safety monitoring device for a battery pack, comprising a processor and a memory storing computer program instructions, wherein when the processor executes the computer program instructions, it realizes the safety monitoring method for a battery pack according to any one of claims 1 to 8. [Claim 13] A computer - readable storage medium storing computer program instructions, wherein when the computer program instructions are executed by a processor, it realizes the safety monitoring method for a battery pack according to any one of claims 1 to 8.

Claims

1. A method for monitoring safety of a battery pack, comprising: Based on the acquired force reception data of the bottom of a battery pack of the electric vehicle, force reception energy information of the bottom of the battery pack is obtained, the force reception data is intended to represent a force reception distribution of the bottom of the battery pack, the force reception distribution includes forces and force distribution received by the bottom of the battery pack, which are determined in association with the positions of a plurality of sensors provided at the four corners of the bottom of the battery pack, and the force reception energy information is intended to represent collision energy received by the bottom of the battery pack; A target level alarm condition is determined based on the force-receiving energy information, and alarm information corresponding to the target level alarm condition is issued. The target level alarm condition is one level alarm condition among preset N level alarm conditions that is satisfied by the force-receiving energy information, and the i-th level alarm condition among the N level alarm conditions is determined by determining whether 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 alarm condition is greater than the upper limit of the i-1-th energy threshold range corresponding to the i-1-th level alarm condition, and m ｉ <m ｉ－１ A method for monitoring the safety of a battery pack.

2. the target level alarm condition is the i-th level alarm condition, Determining a 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 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, and the risk cumulative 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; The cumulative number of risks corresponding to the i-th energy threshold range is m ｉ and issuing an alarm information corresponding to the i-level alarm condition if the i-level alarm condition is reached.

3. m Ｎ 2. The method of claim 1, wherein: =1.

4. Obtaining force-receiving energy information of the battery pack based on the acquired force-receiving data of the bottom of the battery pack attached to the electric vehicle includes: The method of claim 1 , further comprising: obtaining the force-receiving energy information of the bottom of the battery pack based on the force-receiving data when the force-receiving data exceeds a normal change threshold range.

5. Before obtaining force-receiving energy information of the bottom of the battery pack based on the acquired force-receiving data of the bottom of the battery pack attached to the electric vehicle, the method includes: acquiring the force reception data; When the number of cached force receiving data is smaller than a preset number threshold, caching the force receiving data acquired this time; The method of claim 1, further comprising: if the number of cached force-receiving data is equal to or greater than a predetermined threshold number, deleting the force-receiving data acquired at the earliest time and caching the force-receiving data acquired this time.

6. The force receiving data is The data includes one or more of fluctuation data, pressure data, and acceleration data; 2. The method of claim 1, wherein the fluctuation data represents a mechanical wave of a collision received by the bottom of the battery pack, the pressure data represents a force received by the bottom of the battery pack, and the acceleration data represents an acceleration of the battery pack in a direction perpendicular to the bottom of the battery pack.

7. The method of claim 1 , further comprising uploading the force-receiving energy information and / or safety status information of the battery pack, including alarm information corresponding to the target level alarm condition, to a cloud data center.

8. The method according to any one of claims 1 to 7, wherein the force receiving distribution includes forces and force distributions received by the bottom of the battery pack, determined in association with positions of a plurality of sensors provided at the four corners and at the edges of the bottom of the battery pack.

9. A safety monitoring device for a battery pack, comprising: a calculation module for obtaining force receiving energy information of the bottom of a battery pack in an electric vehicle based on force receiving data of the bottom of the battery pack obtained, the force receiving data representing a force receiving distribution of the bottom of the battery pack, the force receiving distribution including forces and force distributions received by the bottom of the battery pack determined in association with positions of a plurality of sensors provided at four corners of the bottom of the battery pack, and the force receiving energy information representing collision energy received by the bottom of the battery pack; An alarm module for determining a target level alarm condition based on the force-receiving energy information and issuing alarm information corresponding to the target level alarm condition, wherein the target level alarm condition is one level alarm condition among preset N level alarm conditions that is satisfied by the force-receiving energy information, and the i-th level alarm condition among the N level alarm conditions is determined by determining that the collision energy represented by the force-receiving energy information is within an i-th energy threshold range. ｉ a condition that the condition has occurred a certain number of times, where N is a positive integer, and an alarm module where 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 alarm condition is greater than the upper limit of the i-1-th energy threshold range corresponding to the i-1-th level alarm condition, and m ｉ <m ｉ－１ This is a battery pack safety monitoring device.

10. A battery pack safety monitoring system, comprising: a sensor provided at a bottom of a battery pack located in an electric vehicle for collecting force reception data of the bottom of the battery pack, the force reception data representing a force reception distribution of the bottom of the battery pack, the force reception distribution including forces received by the bottom of the battery pack and force distribution determined in association with positions of a plurality of sensors provided at four corners of the bottom of the battery pack; a controller connected in communication with the sensor, for acquiring the force reception data from the sensor, and for obtaining force reception energy information of the bottom of the battery pack based on the force reception data, the force reception energy information representing collision energy received by the bottom of the battery pack; A full vehicle controller is connected to the controller in communication with the controller, and determines a target level warning condition based on the force-receiving energy information, and issues warning information corresponding to the target level warning condition, wherein the target level warning condition is one level warning condition among preset N level warning conditions that is satisfied by the force-receiving energy information, and the i-th level warning condition among the N level warning conditions is determined by determining that the collision energy represented by the force-receiving energy information is within an i-th energy threshold range. ｉ a full vehicle controller including a condition that i has occurred a certain number of 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 alarm condition is greater than the upper limit of the i-1-th energy threshold range corresponding to the i-1-th level alarm condition, and m ｉ <m ｉ－１ This is a battery pack safety monitoring system.

11. 11. The system of claim 10, further comprising a cloud data center communicatively connected to the full vehicle controller for obtaining battery pack safety status information from the full vehicle controller, the battery pack safety status information including the force-receiving energy information and / or alarm information corresponding to the target level alarm condition.

12. A battery pack safety monitoring device, comprising: a processor; and a memory having computer program instructions stored therein; A battery pack safety monitoring device that, when the processor executes the computer program instructions, implements the battery pack safety monitoring method according to any one of claims 1 to 8.

13. A computer-readable storage medium having stored thereon computer program instructions, the computer-readable storage medium realizing the battery pack safety monitoring method according to any one of claims 1 to 8, when the computer program instructions are executed by a processor.

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