CN114895201A - Battery monitoring method and device - Google Patents
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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Abstract
本发明公开了一种电池的监测方法和装置,监测方法包括:获取至少一个电池模组中相邻电芯之间的膨胀压力;根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。通过监测电池模组中相邻电芯之间的膨胀压力,可以采集全生命周期内模组内部膨胀力变化来进行热失控预警和报警,根据电池模组中相邻电芯之间的膨胀压力来监测电池并进行预警,提升预警的及时性和准确度,可以针对预警、报警车辆提前干预,提高整车全生命周期内安全性能,减少电池损坏带来的事故。
The invention discloses a battery monitoring method and device. The monitoring method includes: acquiring the expansion pressure between adjacent cells in at least one battery module; according to the expansion pressure between adjacent cells in the at least one battery module The parameter information of the parameter determines whether to issue a reminder message; the parameter information of the inflation pressure includes at least one of the magnitude and the rate of change of the inflation pressure. By monitoring the expansion pressure between adjacent cells in the battery module, it is possible to collect the changes in the expansion force inside the module during the entire life cycle to carry out thermal runaway warning and alarm. According to the expansion pressure between adjacent cells in the battery module It can monitor the battery and give early warning to improve the timeliness and accuracy of the early warning. It can intervene in advance for the early warning and alarm vehicles, improve the safety performance of the entire vehicle life cycle, and reduce accidents caused by battery damage.
Description
技术领域technical field
本发明属于汽车技术领域,具体涉及一种电池的监测方法和装置。The invention belongs to the technical field of automobiles, and in particular relates to a battery monitoring method and device.
背景技术Background technique
随着锂电池技术的不断成熟和国家政策的大力扶持,新能源汽车的发展十分迅猛,但当前电动汽车始终面临着续航里程和安全性不足等问题,随着续航里程的要求提升,电池能量密度也逐渐地提高,市场保有量也在逐步提高,安全问题的重要性日益凸显。最近电动汽车安全事故频发,大多是动力电池起火导致,使得新能源汽车行业的热失控安全性成为人们关注的焦点。With the continuous maturity of lithium battery technology and the strong support of national policies, the development of new energy vehicles is very rapid, but current electric vehicles always face problems such as insufficient cruising range and safety. It is also gradually increasing, and the market share is also gradually increasing, and the importance of safety issues has become increasingly prominent. Recently, the frequent occurrence of electric vehicle safety accidents, mostly caused by the fire of the power battery, makes the thermal runaway safety of the new energy vehicle industry the focus of attention.
锂离子电池失效的原因十分复杂,但主要可分为自身缺陷和滥用两个方面,经过长时间的累积均会导致电池系统发生热失控,危害乘客生命财产安全。目前从电芯层级、模组层级、电池系统层级、整车层级都正在进行积极探索电池系统的全生命周期的安全性保证,但尚无针对全生命周期的系统性的安全性研究。目前主机厂普遍采用的预警和报警方法仅是通过监测电池的电压和温度来实现,仍有大量事故不能及时,甚至根本不能预警和报警,无法达到较好的热失控监测目的。The reasons for the failure of lithium-ion batteries are very complex, but they can be mainly divided into two aspects: self-defect and abuse. After a long period of accumulation, thermal runaway of the battery system will occur, endangering the life and property of passengers. At present, from the cell level, module level, battery system level, and vehicle level, the safety assurance of the battery system's entire life cycle is being actively explored, but there is no systematic safety research for the entire life cycle. At present, the pre-warning and alarm methods commonly used by OEMs are only realized by monitoring the voltage and temperature of the battery. There are still a large number of accidents that cannot be timely, or even cannot be pre-alarmed and alarmed at all, which cannot achieve a better thermal runaway monitoring purpose.
发明内容SUMMARY OF THE INVENTION
本发明实施例的目的是提供一种电池的监测方法和装置,用以解决现有电池的监测和预警不及时,不准确的问题。The purpose of the embodiments of the present invention is to provide a battery monitoring method and device to solve the problems of untimely and inaccurate monitoring and early warning of existing batteries.
第一方面,本发明实施例提供了一种电池的监测方法,包括:In a first aspect, an embodiment of the present invention provides a method for monitoring a battery, including:
获取至少一个电池模组中相邻电芯之间的膨胀压力;obtaining the expansion pressure between adjacent cells in at least one battery module;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;Determine whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in at least one battery module;
所述膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。The parameter information of the inflation pressure includes at least one of a magnitude and a rate of change of the inflation pressure.
其中,根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤包括:Wherein, the step of determining whether to send out the reminder information according to the parameter information of the expansion pressure between the adjacent cells in the at least one battery module includes:
根据至少一个电池模组中相邻电芯之间的膨胀压力的大小确定是否发出提醒信息;Determine whether to issue a reminder message according to the magnitude of the expansion pressure between adjacent cells in at least one battery module;
当至少一个电池模组中相邻电芯之间的膨胀压力的大小大于或等于预设压力值时,发出提醒信息。When the magnitude of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset pressure value, a reminder message is issued.
其中,根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤包括:Wherein, the step of determining whether to send out the reminder information according to the parameter information of the expansion pressure between the adjacent cells in the at least one battery module includes:
根据至少一个电池模组中相邻电芯之间的膨胀压力的变化速率确定是否发出提醒信息;Determine whether to issue a reminder message according to the rate of change of the expansion pressure between adjacent cells in at least one battery module;
当至少一个电池模组中相邻电芯之间的膨胀压力的变化速率大于或等于预设速率时,发出提醒信息。When the rate of change of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset rate, a reminder message is issued.
其中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤包括:Wherein, the step of obtaining the expansion pressure between adjacent cells in at least one battery module includes:
获取多个电池模组中相邻电芯之间的膨胀压力;Obtain the expansion pressure between adjacent cells in multiple battery modules;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤包括:The step of determining whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in at least one battery module includes:
根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量,确定是否发出提醒信息;Whether to issue a reminder message is determined according to the pressure deviation between the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between adjacent cells in the remaining battery modules ;
当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,确定发出提醒信息。When the pressure deviation between the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between adjacent cells in the remaining battery modules is greater than or equal to the preset deviation When the amount is reached, make sure to send out a reminder message.
其中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤包括:Wherein, the step of obtaining the expansion pressure between adjacent cells in at least one battery module includes:
获取多个电池模组中相邻电芯之间的膨胀压力;Obtain the expansion pressure between adjacent cells in multiple battery modules;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤包括:The step of determining whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in at least one battery module includes:
根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量,确定是否发出提醒信息;According to the amount of variation deviation between the rate of change of the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the rate of change of the expansion pressure between the adjacent cells in the remaining battery modules , to determine whether to issue a reminder message;
当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,确定发出提醒信息。The amount of variation deviation between the rate of change of the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the rate of change of the expansion pressure between the adjacent cells in the remaining battery modules When it is greater than or equal to the preset variation deviation, it is determined to issue a reminder message.
其中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤包括:Wherein, the step of obtaining the expansion pressure between adjacent cells in at least one battery module includes:
获取在第一时刻与第二时刻时同一个电池模组中相邻电芯之间的膨胀压力,第一时刻早于第二时刻;Obtain the expansion pressure between adjacent cells in the same battery module at the first time and the second time, and the first time is earlier than the second time;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤包括:The step of determining whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in at least one battery module includes:
当第二时刻时一个电池模组中相邻电芯之间的膨胀压力小于第一时刻时同一个电池模组中相邻电芯之间的膨胀压力的情况下,确定发出提醒信息。When the expansion pressure between adjacent cells in one battery module at the second time is lower than the expansion pressure between adjacent cells in the same battery module at the first time, it is determined to send a reminder message.
第二方面,本发明实施例提供了一种电池的监测装置,包括:In a second aspect, an embodiment of the present invention provides a battery monitoring device, including:
获取模块,用于获取至少一个电池模组中相邻电芯之间的膨胀压力;an acquisition module for acquiring the expansion pressure between adjacent cells in at least one battery module;
提醒模块,用于根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;a reminder module, configured to determine whether to issue reminder information according to parameter information of the expansion pressure between adjacent cells in at least one battery module;
所述膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。The parameter information of the inflation pressure includes at least one of a magnitude and a rate of change of the inflation pressure.
其中,所述提醒模块,用于根据至少一个电池模组中相邻电芯之间的膨胀压力的大小确定是否发出提醒信息;Wherein, the reminder module is used to determine whether to issue reminder information according to the magnitude of the expansion pressure between adjacent cells in at least one battery module;
所述提醒模块,用于当至少一个电池模组中相邻电芯之间的膨胀压力的大小大于或等于预设压力值时,发出提醒信息;或者The reminder module is used to issue reminder information when the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset pressure value; or
其中,所述提醒模块,用于根据至少一个电池模组中相邻电芯之间的膨胀压力的变化速率确定是否发出提醒信息;Wherein, the reminder module is configured to determine whether to issue reminder information according to the rate of change of the expansion pressure between adjacent cells in at least one battery module;
所述提醒模块,用于当至少一个电池模组中相邻电芯之间的膨胀压力的变化速率大于或等于预设速率时,发出提醒信息;或者The reminder module is used to issue reminder information when the rate of change of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset rate; or
其中,所述获取模块,用于获取多个电池模组中相邻电芯之间的膨胀压力;Wherein, the acquisition module is used to acquire the expansion pressure between adjacent cells in the plurality of battery modules;
所述提醒模块,用于根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量,确定是否发出提醒信息;The reminder module is used for the pressure deviation between the expansion pressure between the adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between the adjacent cells in the remaining battery modules amount to determine whether to issue a reminder;
所述提醒模块,用于当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,确定发出提醒信息;或者The reminder module is used for the pressure deviation between the expansion pressure between the adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between the adjacent cells in the remaining battery modules When the amount is greater than or equal to the preset deviation amount, it is determined to issue a reminder message; or
其中,所述获取模块,用于获取多个电池模组中相邻电芯之间的膨胀压力;Wherein, the acquisition module is used to acquire the expansion pressure between adjacent cells in the plurality of battery modules;
所述提醒模块,用于根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量,确定是否发出提醒信息;The reminder module is used for the change rate of the expansion pressure between the adjacent cells of the target battery module in the plurality of battery modules and the change of the expansion pressure between the adjacent cells in the remaining battery modules The change deviation between the rates to determine whether to issue a reminder message;
所述提醒模块,用于当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,确定发出提醒信息;或者The reminder module is used when the rate of change of the expansion pressure between the adjacent cells of the target battery module in the plurality of battery modules and the change of the expansion pressure between the adjacent cells in the remaining battery modules When the variation deviation between the rates is greater than or equal to the preset variation deviation, a reminder message is determined to be issued; or
其中,所述获取模块,用于获取在第一时刻与第二时刻时同一个电池模组中相邻电芯之间的膨胀压力,第一时刻早于第二时刻;Wherein, the acquisition module is used to acquire the expansion pressure between adjacent cells in the same battery module at a first time and a second time, and the first time is earlier than the second time;
所述提醒模块,用于当第二时刻时一个电池模组中相邻电芯之间的膨胀压力小于第一时刻时同一个电池模组中相邻电芯之间的膨胀压力的情况下,确定发出提醒信息。The reminder module is used for, when the expansion pressure between adjacent cells in one battery module at the second moment is less than the expansion pressure between adjacent cells in the same battery module at the first moment, Make sure to send a reminder message.
第三方面,本发明实施例提供了一种电子设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现上述实施例中所述的方法的步骤。In a third aspect, an embodiment of the present invention provides an electronic device, including a processor and a memory, where the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor The steps of implementing the methods described in the above embodiments.
第四方面,本发明实施例提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现上述实施例中所述的方法的步骤。In a fourth aspect, an embodiment of the present invention provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the methods described in the foregoing embodiments are implemented .
本发明实施例的电池的监测方法包括:获取至少一个电池模组中相邻电芯之间的膨胀压力;根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;所述膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。通过监测电池模组中相邻电芯之间的膨胀压力,可以采集全生命周期内模组内部膨胀力变化来进行热失控预警和报警,根据电池模组中相邻电芯之间的膨胀压力来监测电池并进行预警,提升预警的及时性和准确度,可以针对预警、报警车辆提前干预,提高整车全生命周期内安全性能,减少电池损坏带来的事故。The battery monitoring method according to the embodiment of the present invention includes: acquiring the expansion pressure between adjacent cells in at least one battery module; Reminder information; the parameter information of the inflation pressure includes at least one of a magnitude and a rate of change of the inflation pressure. By monitoring the expansion pressure between adjacent cells in the battery module, it is possible to collect the changes in the expansion force within the module during the entire life cycle for thermal runaway warning and alarm. According to the expansion pressure between adjacent cells in the battery module It can monitor the battery and give early warning, improve the timeliness and accuracy of early warning, and intervene in advance for early warning and alarm vehicles, improve the safety performance of the entire vehicle life cycle, and reduce accidents caused by battery damage.
附图说明Description of drawings
图1为监测装置的一个连接示意图;Fig. 1 is a connection schematic diagram of monitoring device;
图2为电池的一个结构示意图;Fig. 2 is a structural schematic diagram of a battery;
图3为电池的一个爆炸示意图;Fig. 3 is an exploded schematic diagram of the battery;
图4为电池中相邻电芯之间的膨胀力的变化速率的一个示意图;Fig. 4 is a schematic diagram of the rate of change of the expansion force between adjacent cells in the battery;
图5为电池结构失效的一个示意图;Fig. 5 is a schematic diagram of the failure of the battery structure;
图6为不同电池模组中相邻电芯之间的膨胀力的变化示意图;6 is a schematic diagram of the variation of the expansion force between adjacent cells in different battery modules;
附图标记reference number
电芯1;端板2;汇流排3;侧板4;
获取模块10;压力传感器11;
提醒模块20。
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
本发明的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”,一般表示前后关联对象是一种“或”的关系。The terms "first", "second" and the like in the description and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that embodiments of the invention can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.
下面结合附图1至图6所示,通过具体的实施例及其应用场景对本发明实施例提供的电池的监测方法进行详细地说明。The following describes the battery monitoring method provided by the embodiment of the present invention in detail through specific embodiments and application scenarios shown in FIGS. 1 to 6 .
本发明实施例的电池的监测方法包括:The monitoring method of the battery according to the embodiment of the present invention includes:
获取至少一个电池模组中相邻电芯之间的膨胀压力;obtaining the expansion pressure between adjacent cells in at least one battery module;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;所述膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。提醒信息可以包括声音信息、光电信息、振动信息、文字或图案信息等。Whether to issue a reminder message is determined according to parameter information of the expansion pressure between adjacent cells in at least one battery module; the parameter information of the expansion pressure includes at least one of a magnitude and a rate of change of the expansion pressure. The reminder information may include sound information, photoelectric information, vibration information, text or pattern information, and the like.
在本发明实施例的电池的监测方法中,通过监测电池模组中相邻电芯之间的膨胀压力,可以采集全生命周期内模组内部膨胀力变化来进行热失控预警和报警,根据电池模组中相邻电芯之间的膨胀压力来监测电池并进行预警,提升预警的及时性和准确度,可以针对预警、报警车辆提前干预,提高整车全生命周期内安全性能,减少电池损坏带来的事故。可显著提升电池系统的预警提前度和准确覆盖度,基于热失控产热机制,采用模组膨胀力这个信号进行预警具有灵敏度高,可靠性强和预警提前度高的优势。电芯在老化过程中期之前,电压及温度可能无明显变化,但是电芯内部的压力已经出现变化,能够通过模组内部压力变化,提前识别异常,进行早期预警,减少热失控风险,该方法热失控报警达到早于电压及温度报警的效果。可以对非工作(停车静置)状态的车辆进行监控,弥补目前停车状态下无法预警的弊端。In the battery monitoring method of the embodiment of the present invention, by monitoring the expansion pressure between adjacent cells in the battery module, the change of the expansion force inside the module in the whole life cycle can be collected to carry out thermal runaway warning and alarm. The expansion pressure between adjacent cells in the module is used to monitor the battery and give early warning, improve the timeliness and accuracy of early warning, and can intervene in advance for early warning and warning vehicles, improve the safety performance of the entire vehicle life cycle, and reduce battery damage. brought about by the accident. It can significantly improve the early warning and accurate coverage of the battery system. Based on the thermal runaway heat generation mechanism, using the module expansion force signal for early warning has the advantages of high sensitivity, strong reliability and high early warning. Before the middle of the aging process, the voltage and temperature of the cell may not change significantly, but the pressure inside the cell has changed. Through the change in the internal pressure of the module, the abnormality can be identified in advance, early warning can be carried out, and the risk of thermal runaway can be reduced. The out-of-control alarm has an effect earlier than the voltage and temperature alarms. It can monitor the vehicles in the non-working (parking and standing) state to make up for the drawbacks that the current parking state cannot be forewarned.
在一些实施例中,根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤可以包括:In some embodiments, the step of determining whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in the at least one battery module may include:
根据至少一个电池模组中相邻电芯之间的膨胀压力的大小确定是否发出提醒信息;Determine whether to issue a reminder message according to the magnitude of the expansion pressure between adjacent cells in at least one battery module;
当至少一个电池模组中相邻电芯之间的膨胀压力的大小大于或等于预设压力值时,发出提醒信息。当电池模组中的电芯出现异常时,电池模组中相邻电芯之间的膨胀压力会发生变化,电池模组中相邻电芯之间的膨胀压力会增大,当至少一个电池模组中相邻电芯之间的膨胀压力的大小大于或等于预设压力值时,发出提醒信息,以便于可以及时准确地提醒用户,使得用户可以及时干预和处理,减少电池损坏带来的事故。When the magnitude of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset pressure value, a reminder message is issued. When the cells in the battery module are abnormal, the expansion pressure between adjacent cells in the battery module will change, and the expansion pressure between adjacent cells in the battery module will increase. When the size of the expansion pressure between adjacent cells in the module is greater than or equal to the preset pressure value, a reminder message will be issued, so that the user can be reminded in a timely and accurate manner, so that the user can intervene and deal with it in time, and reduce the damage caused by battery damage. ACCIDENT.
在另一些实施例中,根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤可以包括:In other embodiments, the step of determining whether to issue a reminder message according to parameter information of the expansion pressure between adjacent cells in the at least one battery module may include:
根据至少一个电池模组中相邻电芯之间的膨胀压力的变化速率确定是否发出提醒信息;Determine whether to issue a reminder message according to the rate of change of the expansion pressure between adjacent cells in at least one battery module;
当至少一个电池模组中相邻电芯之间的膨胀压力的变化速率大于或等于预设速率时,发出提醒信息。When the rate of change of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to a preset rate, a reminder message is issued.
当电池模组中的电芯出现异常时,电池模组中相邻电芯之间的膨胀压力的变化速率会发生变化,电池模组中相邻电芯之间的膨胀压力的变化速率会突然增大,当至少一个电池模组中相邻电芯之间的膨胀压力的变化速率大于或等于预设速率时,发出提醒信息,以便于可以及时准确地提醒用户,使得用户可以及时干预和处理,减少电池损坏带来的事故。可以通过电池模组中相邻电芯之间的膨胀压力的变化速率异常变化,进行热失控报警。When the cells in the battery module are abnormal, the change rate of the expansion pressure between adjacent cells in the battery module will change, and the change rate of the expansion pressure between adjacent cells in the battery module will suddenly change Increase, when the rate of change of the expansion pressure between adjacent cells in at least one battery module is greater than or equal to the preset rate, a reminder message is issued, so that the user can be reminded in a timely and accurate manner, so that the user can intervene and deal with it in time , reduce the accident caused by battery damage. The thermal runaway alarm can be performed by abnormal changes in the rate of change of the expansion pressure between adjacent cells in the battery module.
在应用过程中,如图4所示,当电池模组中的电芯出现热失控时,此时监控到模组内部膨胀力出现显著异常。假设电池模组正常时,充电时电池模组内部膨胀力平均增加速率为V0;当电芯出现异常,电池模组内部膨胀力平均增加速率为V1,异常报警系数可以为k,当V1>k*V0时,电池系统可以报警,模组内部异常,可以及时提醒用户。During the application process, as shown in Figure 4, when the cells in the battery module are thermally out of control, a significant abnormality in the expansion force inside the module is monitored at this time. Assuming that the battery module is normal, the average increase rate of the internal expansion force of the battery module during charging is V0; when the battery cell is abnormal, the average increase rate of the internal expansion force of the battery module is V1, and the abnormal alarm coefficient can be k. When V1>k When *V0, the battery system can alarm, the module is abnormal, and the user can be reminded in time.
在本发明的实施例中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤可以包括:In an embodiment of the present invention, the step of acquiring the expansion pressure between adjacent cells in the at least one battery module may include:
获取多个电池模组中相邻电芯之间的膨胀压力;Obtain the expansion pressure between adjacent cells in multiple battery modules;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤可以包括:The step of determining whether to issue a reminder message according to the parameter information of the expansion pressure between adjacent cells in the at least one battery module may include:
根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量,确定是否发出提醒信息;Whether to issue a reminder message is determined according to the pressure deviation between the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between adjacent cells in the remaining battery modules ;
当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,确定发出提醒信息。When the pressure deviation between the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the expansion pressure between adjacent cells in the remaining battery modules is greater than or equal to the preset deviation When the amount is reached, make sure to send out a reminder message.
也即是,可以获取多个电池模组中相邻电芯之间的膨胀压力,根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量,确定是否发出提醒信息;当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,确定发出提醒信息。通过将不同的电池模组中相邻电芯之间的膨胀压力进行对比,可以发现异常的电池模组。当电池模组出现异常时,异常的电池模组中相邻电芯之间的膨胀压力与正常的电池模组中相邻电芯之间的膨胀压力存在偏差,当异常的电池模组中相邻电芯之间的膨胀压力与正常的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,可以发出提醒信息,以便于可以及时准确地提醒用户,使得用户可以及时干预和处理,减少电池损坏带来的事故。That is, the expansion pressure between adjacent cells in the multiple battery modules can be obtained, according to the expansion pressure between the adjacent cells of the target battery module in the multiple battery modules and the remaining battery modules. The pressure deviation between the expansion pressures between the adjacent cells in the battery module determines whether to issue a reminder message; when the expansion pressure between the adjacent cells of the target battery module in multiple battery modules is related to the remaining When the pressure deviation between the expansion pressures between adjacent cells in the group is greater than or equal to the preset deviation, it is determined to issue a reminder message. By comparing the expansion pressures between adjacent cells in different battery modules, abnormal battery modules can be found. When the battery module is abnormal, there is a deviation between the expansion pressure between adjacent cells in the abnormal battery module and the expansion pressure between adjacent cells in the normal battery module. When the pressure deviation between the expansion pressure between adjacent cells and the expansion pressure between adjacent cells in a normal battery module is greater than or equal to the preset deviation, a reminder message can be issued so that timely and accurate Remind the user, so that the user can intervene and deal with it in time, and reduce the accident caused by the battery damage.
在另一些实施例中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤可以包括:In other embodiments, the step of obtaining the expansion pressure between adjacent cells in the at least one battery module may include:
获取多个电池模组中相邻电芯之间的膨胀压力;Obtain the expansion pressure between adjacent cells in multiple battery modules;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤可以包括:The step of determining whether to issue a reminder message according to the parameter information of the expansion pressure between adjacent cells in the at least one battery module may include:
根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量,确定是否发出提醒信息;According to the amount of variation deviation between the rate of change of the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the rate of change of the expansion pressure between the adjacent cells in the remaining battery modules , to determine whether to issue a reminder message;
当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,确定发出提醒信息。The amount of variation deviation between the rate of change of the expansion pressure between adjacent cells of the target battery module in the plurality of battery modules and the rate of change of the expansion pressure between the adjacent cells in the remaining battery modules When it is greater than or equal to the preset variation deviation, it is determined to issue a reminder message.
在应用过程中,可以获取多个电池模组中相邻电芯之间的膨胀压力,根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量,确定是否发出提醒信息;当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,确定发出提醒信息。通过将不同的电池模组中相邻电芯之间的膨胀压力的变化速率进行对比,可以发现异常的电池模组。当电池模组出现异常时,异常的电池模组中相邻电芯之间的膨胀压力的变化速率与正常的电池模组中相邻电芯之间的膨胀压力的变化速率存在偏差,当异常的电池模组中相邻电芯之间的膨胀压力的变化速率与正常的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,可以发出提醒信息,以便于可以及时准确地提醒用户,使得用户可以及时干预和处理,减少电池损坏带来的事故。通过电池内所有模组之间的横向对比,识别异常模组,进行预警。During the application process, the expansion pressure between adjacent cells in the plurality of battery modules can be obtained, according to the change rate of the expansion pressure between the adjacent cells of the target battery module in the plurality of battery modules and the residual The amount of variation deviation between the rate of change of the expansion pressure between adjacent cells in the battery module is determined to determine whether to issue a reminder; When the variation deviation between the rate of change of the expansion pressure and the rate of change of the expansion pressure between adjacent cells in the remaining battery modules is greater than or equal to the preset variation deviation, it is determined to issue a reminder message. By comparing the rate of change of the expansion pressure between adjacent cells in different battery modules, abnormal battery modules can be found. When the battery module is abnormal, there is a deviation between the rate of change of the expansion pressure between adjacent cells in the abnormal battery module and the rate of change of the expansion pressure between adjacent cells in the normal battery module. The variation deviation between the rate of change of the expansion pressure between adjacent cells in a normal battery module and the rate of change of the expansion pressure between adjacent cells in the normal battery module is greater than or equal to the preset variation deviation When the alarm occurs, a reminder message can be issued, so that the user can be reminded in a timely and accurate manner, so that the user can intervene and deal with it in a timely manner, and reduce accidents caused by battery damage. Through the horizontal comparison between all modules in the battery, abnormal modules are identified and early warning is given.
在电池模组的全生命周期内,可以实时监控电池内所有电池模组中相邻电芯之间的膨胀力。假设电池内有n个电池模组,当其中一个电池模组内部的电芯发生加速老化、极片增厚、产气速率加快等特征时,如图6所示,其中,曲线a表示异常模组的膨胀力变化,曲线b表示正常模组的膨胀力变化,通过横向比较异常模组内部膨胀力Fn与其他正常模组内部膨胀力F的偏离程度和变化量进行预警,异常预警系数为K,K数值越大,故障越严重。During the entire life cycle of the battery module, the expansion force between adjacent cells in all battery modules in the battery can be monitored in real time. Assuming that there are n battery modules in the battery, when the cells in one of the battery modules have the characteristics of accelerated aging, thickening of the pole piece, and accelerated gas production rate, as shown in Figure 6, the curve a represents the abnormal mode. The expansion force change of the group, the curve b represents the expansion force change of the normal module, the early warning is made by horizontally comparing the deviation and change of the internal expansion force Fn of the abnormal module and the internal expansion force F of other normal modules, and the abnormal warning coefficient is K , the larger the K value, the more serious the fault.
异常模组中相邻电芯之间的膨胀力增长速率Vn可以为:The expansion rate Vn between adjacent cells in the abnormal module can be:
Vn=Fn/tVn=Fn/t
正常模组中相邻电芯之间的膨胀力平均增长速率Vavg可以为:The average growth rate Vavg of the expansion force between adjacent cells in a normal module can be:
Vavg=(F1+F2+…+Fn)-Fn/(n-1)tVavg=(F1+F2+…+Fn)-Fn/(n-1)t
异常报警系数K可以为:The abnormal alarm coefficient K can be:
k=Vn/Vavg。k=Vn/Vavg.
异常模组中相邻电芯之间的膨胀力增长速率与正常模组中相邻电芯之间的膨胀力平均增长速率之间的变化偏差量超过预设值时可以发出提醒信息,以提醒用户,使得用户可以及时干预和处理,减少电池损坏带来的事故。可以通过模组结构强度阈值,对模组结构失效进行分级报警。When the deviation between the growth rate of the expansion force between adjacent cells in the abnormal module and the average growth rate of the expansion force between the adjacent cells in the normal module exceeds the preset value, a reminder message can be sent to remind user, so that the user can intervene and handle in time, and reduce the accident caused by battery damage. The module structure failure can be graded and alarmed through the module structure strength threshold.
在一些实施例中,获取至少一个电池模组中相邻电芯之间的膨胀压力的步骤可以包括:In some embodiments, the step of obtaining the expansion pressure between adjacent cells in the at least one battery module may include:
获取在第一时刻与第二时刻时同一个电池模组中相邻电芯之间的膨胀压力,第一时刻早于第二时刻;Obtain the expansion pressure between adjacent cells in the same battery module at the first time and the second time, and the first time is earlier than the second time;
根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息的步骤可以包括:The step of determining whether to issue a reminder message according to the parameter information of the expansion pressure between adjacent cells in the at least one battery module may include:
当第二时刻时一个电池模组中相邻电芯之间的膨胀压力小于第一时刻时同一个电池模组中相邻电芯之间的膨胀压力的情况下,确定发出提醒信息。When the expansion pressure between adjacent cells in one battery module at the second time is lower than the expansion pressure between adjacent cells in the same battery module at the first time, it is determined to send a reminder message.
第一时刻可以为电池模组的模组结构失效前的一个时刻,第二时刻可以为电池模组的模组结构失效后的一个时刻,当同一个模组内部膨胀力异常跌落且达到异常时,可以发出提醒信息,以便于可以及时准确地提醒用户,使得用户可以及时干预和处理。The first moment can be a moment before the module structure of the battery module fails, and the second moment can be a moment after the module structure of the battery module fails, when the internal expansion force of the same module falls abnormally and reaches an abnormal level. , a reminder message can be issued, so that the user can be reminded in a timely and accurate manner, so that the user can intervene and process in time.
当电池内部有至少一个电池模组的Fn达到模组结构强度阈值F值,提前预警模组结构失效风险,异常预警系数为K,其中,K=Fn/F,K数值越大,故障越严重。模组结构失效前模组内部压力为Fn前,模组结构失效后模组内部压力为Fn后,异常报警系数为K,其中,K=Fn前/Fn后,当同一个模组内部膨胀力异常跌落且达到异常报警系数为K时,则报模组结构失效故障。如图5所示,电池模组结构在位置c出现失效。When the Fn of at least one battery module inside the battery reaches the module structural strength threshold F value, the risk of module structural failure is warned in advance, and the abnormal warning coefficient is K, where K=Fn/F, the larger the K value, the more serious the fault. . Before the module structure fails, the internal pressure of the module is before Fn, and after the module structure fails, the internal pressure of the module is Fn, and the abnormal alarm coefficient is K, where K=before Fn/after Fn, when the internal expansion force of the same module is When it falls abnormally and reaches the abnormal alarm coefficient of K, the module structure failure fault is reported. As shown in FIG. 5 , the battery module structure fails at position c.
本发明实施例提供一种电池的监测装置,如图1所示,监测装置可以包括:An embodiment of the present invention provides a battery monitoring device. As shown in FIG. 1 , the monitoring device may include:
获取模块10,可以用于获取至少一个电池模组中相邻电芯之间的膨胀压力;an
提醒模块20,可以用于根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息;所述膨胀压力的参数信息包括膨胀压力的大小与变化速率中的至少一个。在本发明实施例的电池的监测装置中,通过获取模块10可以获取至少一个电池模组中相邻电芯之间的膨胀压力;通过提醒模块20可以根据至少一个电池模组中相邻电芯之间的膨胀压力的参数信息确定是否发出提醒信息。通过监测电池模组中相邻电芯之间的膨胀压力,可以采集全生命周期内模组内部膨胀力变化来进行热失控预警和报警,根据电池模组中相邻电芯之间的膨胀压力来监测电池并进行预警,提升预警的及时性和准确度,可以针对预警、报警车辆提前干预,提高整车全生命周期内安全性能,减少电池损坏带来的事故。The
如图3所示,获取模块10可以包括压力传感器11,压力传感器11可以设置于电池模组中相邻电芯1之间,以监测电池模组中相邻电芯1之间的膨胀压力。如图2所示,四个电芯1可以通过汇流排3串联而成,电芯1之间可以布置有压力传感器11,最后端板2与侧板4可以通过焊接使得模组成为一个整体。As shown in FIG. 3 , the
可选地,提醒模块20可以用于根据至少一个电池模组中相邻电芯之间的膨胀压力的大小确定是否发出提醒信息;Optionally, the
所述提醒模块20可以用于当至少一个电池模组中相邻电芯之间的膨胀压力的大小大于或等于预设压力值时,发出提醒信息。The reminding
可选地,所述提醒模块20可以用于根据至少一个电池模组中相邻电芯之间的膨胀压力的变化速率确定是否发出提醒信息;Optionally, the
所述提醒模块20可以用于当至少一个电池模组中相邻电芯之间的膨胀压力的变化速率大于或等于预设速率时,发出提醒信息。The reminding
可选地,所述获取模块10可以用于获取多个电池模组中相邻电芯之间的膨胀压力;Optionally, the obtaining
所述提醒模块20可以用于根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量,确定是否发出提醒信息;The reminding
所述提醒模块20可以用于当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力与剩余的电池模组中相邻电芯之间的膨胀压力之间的压力偏差量大于或等于预设偏差量时,确定发出提醒信息。The reminding
可选地,所述获取模块10可以用于获取多个电池模组中相邻电芯之间的膨胀压力;Optionally, the obtaining
所述提醒模块20可以用于根据多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量,确定是否发出提醒信息;The reminding
所述提醒模块20可以用于当多个电池模组中的目标电池模组的相邻电芯之间的膨胀压力的变化速率与剩余的电池模组中相邻电芯之间的膨胀压力的变化速率之间的变化偏差量大于或等于预设变化偏差量时,确定发出提醒信息。The reminding
可选地,所述获取模块10可以用于获取在第一时刻与第二时刻时同一个电池模组中相邻电芯之间的膨胀压力,第一时刻早于第二时刻;Optionally, the obtaining
所述提醒模块20可以用于当第二时刻时一个电池模组中相邻电芯之间的膨胀压力小于第一时刻时同一个电池模组中相邻电芯之间的膨胀压力的情况下,确定发出提醒信息。The
本发明实施例提供一种电子设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现上述实施例中所述的监测方法的步骤。An embodiment of the present invention provides an electronic device, including a processor and a memory, where the memory stores a program or an instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the above-mentioned embodiments are implemented The steps of the monitoring method.
本发明实施例提供一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现上述实施例中所述的监测方法的步骤。An embodiment of the present invention provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the monitoring method described in the foregoing embodiments are implemented.
上面结合附图对本发明的实施例进行了描述,但是本发明并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本发明的启示下,在不脱离本发明宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本发明的保护之内。The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115575845A (en) * | 2022-11-08 | 2023-01-06 | 南京英锐创电子科技有限公司 | Thermal runaway warning device and battery system |
CN116646620A (en) * | 2023-01-11 | 2023-08-25 | 广州锐速智能科技股份有限公司 | Power management method and device for high-voltage battery system |
CN116973779A (en) * | 2023-07-28 | 2023-10-31 | 哲弗智能系统(上海)有限公司 | Battery pack thermal runaway prediction method, device and system and power supply system |
CN117388725A (en) * | 2023-03-13 | 2024-01-12 | 中国石油大学(华东) | An early abnormality warning method based on the expansion force of lithium-ion batteries |
CN117429264A (en) * | 2023-12-21 | 2024-01-23 | 钛深科技(深圳)有限公司 | Maintenance detection method of battery module, storage medium, automobile and energy storage system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021169487A1 (en) * | 2020-02-24 | 2021-09-02 | 上海蔚来汽车有限公司 | Short-circuit monitoring method, system and device for cells in power battery |
CN113991200A (en) * | 2021-10-28 | 2022-01-28 | 远景动力技术(江苏)有限公司 | Monitoring method and monitoring device for secondary battery, secondary battery and vehicle |
-
2022
- 2022-04-06 CN CN202210357716.1A patent/CN114895201A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021169487A1 (en) * | 2020-02-24 | 2021-09-02 | 上海蔚来汽车有限公司 | Short-circuit monitoring method, system and device for cells in power battery |
CN113991200A (en) * | 2021-10-28 | 2022-01-28 | 远景动力技术(江苏)有限公司 | Monitoring method and monitoring device for secondary battery, secondary battery and vehicle |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115575845A (en) * | 2022-11-08 | 2023-01-06 | 南京英锐创电子科技有限公司 | Thermal runaway warning device and battery system |
CN116646620A (en) * | 2023-01-11 | 2023-08-25 | 广州锐速智能科技股份有限公司 | Power management method and device for high-voltage battery system |
CN117388725A (en) * | 2023-03-13 | 2024-01-12 | 中国石油大学(华东) | An early abnormality warning method based on the expansion force of lithium-ion batteries |
CN116973779A (en) * | 2023-07-28 | 2023-10-31 | 哲弗智能系统(上海)有限公司 | Battery pack thermal runaway prediction method, device and system and power supply system |
CN117429264A (en) * | 2023-12-21 | 2024-01-23 | 钛深科技(深圳)有限公司 | Maintenance detection method of battery module, storage medium, automobile and energy storage system |
CN117429264B (en) * | 2023-12-21 | 2024-03-29 | 钛深科技(深圳)有限公司 | Maintenance detection method of battery module, storage medium, automobile and energy storage system |
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