CN113771627A - Power battery pack air tightness monitoring method and device and electric automobile - Google Patents
Power battery pack air tightness monitoring method and device and electric automobile Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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Abstract
本发明的实施例提供一种动力电池包的气密性监测方法、装置及电动汽车。所述方法应用于气密性监测控制器，所述方法包括：获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率；根据所述变化率，产生预警信息。本发明的上述方案，通过监测动力电池包在预设时长内的压力值的变化率，来判断动力电池包内的动力电池包的气密性是否存在需要进行预警的情况，避免了由于动力电池包使用老化所带来的气密性风险，提高了电动汽车使用的安全性和可靠性。
Embodiments of the present invention provide a method and device for monitoring the air tightness of a power battery pack, and an electric vehicle. The method is applied to an air tightness monitoring controller, and the method includes: acquiring a power battery pack whose pressure value reaches a preset pressure value, and a change rate of the pressure value within a preset time period; and generating an early warning according to the change rate information. In the above solution of the present invention, by monitoring the rate of change of the pressure value of the power battery pack within a preset period of time, it is determined whether the air tightness of the power battery pack in the power battery pack needs to be pre-warned, avoiding the need for early warning of the power battery pack The airtightness risk brought by the aging of the package improves the safety and reliability of the use of electric vehicles.
Description
技术领域technical field
本发明涉及电动汽车技术领域，特别是指一种动力电池包的气密性监测方法、装置及电动汽车。The invention relates to the technical field of electric vehicles, in particular to a method and device for monitoring the air tightness of a power battery pack and an electric vehicle.
背景技术Background technique
当前随着经济的发展，国家越来越注重环保问题。与普通燃油车相比，新能源电动汽车具有低排放、低污染等特点，利于我国环境友好型社会的建设，国家通过各项补贴政策鼓励人们购买电动汽车，因此，越来越多的人们倾向于选择电动汽车。动力电池系统作为电动汽车的动力来源，其安全性是整车的重中之重，是电动汽车推广的一个重要瓶颈，而IP67(防护安全级别)作为电池包安全性的重要指标，一直是各大整车厂研发投入的重心。With the current economic development, the country pays more and more attention to environmental protection issues. Compared with ordinary fuel vehicles, new energy electric vehicles have the characteristics of low emission and low pollution, which is conducive to the construction of an environment-friendly society in my country. The state encourages people to buy electric vehicles through various subsidy policies. Therefore, more and more people tend to to choose an electric vehicle. As the power source of electric vehicles, the safety of power battery system is the top priority of the whole vehicle and an important bottleneck for the promotion of electric vehicles. As an important indicator of battery pack safety, IP67 (protection safety level) has always been a The focus of R&D investment by large OEMs.
电动汽车所使用的动力电池包使用时间较长之后，会出现一定的老化，而电池包的老化所带来的气密性风险，也会影响电动汽车使用的安全性。The power battery pack used in electric vehicles will age to a certain extent after a long period of use, and the air tightness risk brought by the aging of the battery pack will also affect the safety of electric vehicles.
发明内容SUMMARY OF THE INVENTION
本发明要解决的技术问题是提供一种动力电池包的气密性监测方法、装置及电动汽车，从而解决动力电池包老化所带来的气密性风险，影响电动汽车使用的安全性的问题。The technical problem to be solved by the present invention is to provide a method and device for monitoring the airtightness of a power battery pack, and an electric vehicle, so as to solve the airtightness risk caused by the aging of the power battery pack and affect the safety of electric vehicles. .
为解决上述技术问题，本发明的技术方案如下：For solving the above-mentioned technical problems, the technical scheme of the present invention is as follows:
根据本发明的一个方面，提供一种动力电池包的气密性监测方法，应用于气密性监测控制器，所述方法包括：According to an aspect of the present invention, there is provided a method for monitoring the air tightness of a power battery pack, which is applied to an air tightness monitoring controller, and the method includes:
获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率；Obtain the change rate of the pressure value within the preset time period for the power battery pack whose pressure value reaches the preset pressure value;
根据所述变化率，产生预警信息。According to the change rate, early warning information is generated.
进一步地，获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率之前，还包括：Further, obtaining a power battery pack whose pressure value reaches a preset pressure value, before the rate of change of the pressure value within a preset time period, further includes:
获取对动力电池包充气加压的指令；Obtain the instruction to inflate and pressurize the power battery pack;
根据所述指令，控制充气装置对动力电池包充气加压；According to the instruction, control the inflator to inflate and pressurize the power battery pack;
若所述压力值达到预设压力值，则停止对动力电池包充气加压。If the pressure value reaches the preset pressure value, the charging and pressurizing of the power battery pack is stopped.
进一步地，获取对动力电池包充气加压的指令，包括：Further, obtain an instruction to inflate and pressurize the power battery pack, including:
在车辆启动后，产生对动力电池包充气加压的指令；或者，After the vehicle is started, a command to inflate and pressurize the power battery pack is generated; or,
接收用户终端发送的动力电池包气密性监测的请求，根据所述请求产生对动力电池包充气加压的指令。Receive a request for air tightness monitoring of the power battery pack sent by the user terminal, and generate an instruction to inflate and pressurize the power battery pack according to the request.
进一步地，根据所述变化率，产生预警信息，包括：Further, generating early warning information according to the rate of change, including:
若所述变化率大于或者等于第一预设值，且小于或者等于第二预设值，则发送第一预警信息；或者，If the rate of change is greater than or equal to the first preset value and less than or equal to the second preset value, first warning information is sent; or,
若所述变化率大于第二预设值，则发送第二预警信息；或者，If the rate of change is greater than the second preset value, send second warning information; or,
若所述变化率小于第一预设值，则产生反馈结果，并发送所述反馈结果。If the rate of change is less than the first preset value, a feedback result is generated, and the feedback result is sent.
根据本发明的另一个方面，还提供一种动力电池包的气密性监测装置，应用于气密性监测控制器，所述装置包括：According to another aspect of the present invention, there is also provided an airtightness monitoring device for a power battery pack, which is applied to an airtightness monitoring controller, and the device includes:
第一获取模块，用于获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率；a first acquisition module, used to acquire the rate of change of the pressure value within the preset time period of the power battery pack whose pressure value reaches the preset pressure value;
处理模块，用于根据所述变化率，产生预警信息。The processing module is configured to generate early warning information according to the change rate.
进一步地，所述装置还包括：Further, the device also includes:
第二获取模块，用于获取对动力电池包充气加压的指令；The second obtaining module is used to obtain an instruction to inflate and pressurize the power battery pack;
控制模块，用于根据所述指令，控制充气装置对动力电池包充气加压；还用于a control module, used for controlling the inflation device to inflate and pressurize the power battery pack according to the instruction; also used for
若所述压力值达到预设压力值，则控制充气装置停止对动力电池包充气加压。If the pressure value reaches the preset pressure value, the inflator is controlled to stop inflating and pressurizing the power battery pack.
进一步地，第二获取模块，具体用于：Further, the second acquisition module is specifically used for:
在车辆启动后，产生对动力电池包充气加压的指令；或者，After the vehicle is started, a command to inflate and pressurize the power battery pack is generated; or,
接收用户终端发送的动力电池包气密性监测的请求，根据所述请求产生对动力电池包充气加压的指令。Receive a request for air tightness monitoring of the power battery pack sent by the user terminal, and generate an instruction to inflate and pressurize the power battery pack according to the request.
进一步地，处理模块，具体用于：Further, the processing module is specifically used for:
若所述变化率大于或者等于第一预设值，且小于或者等于第二预设值，则发送第一预警信息；或者，If the rate of change is greater than or equal to the first preset value and less than or equal to the second preset value, first warning information is sent; or,
若所述变化率大于第二预设值，则发送第二预警信息；或者，If the rate of change is greater than the second preset value, send second warning information; or,
若所述变化率小于第一预设值，则产生反馈结果，并发送所述反馈结果。If the rate of change is less than the first preset value, a feedback result is generated, and the feedback result is sent.
根据本发明的另一个方面，还提供一种电动汽车，包括气密性监测控制器，以及与所述气密性监测控制器电连接的充气装置、大气压力传感器，所述气密性监测控制器包括如上所述的动力电池包的气密性监测装置。According to another aspect of the present invention, there is also provided an electric vehicle, comprising an airtightness monitoring controller, an inflator and an atmospheric pressure sensor electrically connected to the airtightness monitoring controller, the airtightness monitoring and control The device includes the air tightness monitoring device of the power battery pack as described above.
根据本发明的另一个方面，还提供一种存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行如上所述的方法。According to another aspect of the present invention, there is also provided a storage medium having a computer program stored thereon, the computer program being executed by a processor to execute the method as described above.
本发明的上述方案至少包括以下有益效果：The above-mentioned scheme of the present invention at least includes the following beneficial effects:
本发明的上述方案，通过监测动力电池包在预设时长内的压力值的变化率，来判断动力电池包内的动力电池包的气密性是否存在需要进行预警的情况，避免了由于动力电池包使用老化所带来的气密性风险，提高了电动汽车的使用安全性和可靠性。In the above solution of the present invention, by monitoring the rate of change of the pressure value of the power battery pack within a preset period of time, it is determined whether the air tightness of the power battery pack in the power battery pack needs an early warning, avoiding the need for early warning due to the power battery pack. The air tightness risk brought by the aging of the package improves the safety and reliability of the electric vehicle.
附图说明Description of drawings
图1是本发明的一种动力电池包的气密性监测方法的步骤图；Fig. 1 is the step diagram of the air tightness monitoring method of a kind of power battery pack of the present invention;
图2是本发明的一种动力电池包的气密性监测装置的器件连接图；Fig. 2 is a device connection diagram of an air tightness monitoring device of a power battery pack of the present invention;
图3是本发明的一种动力电池包的气密性监测方法的工作流程图。FIG. 3 is a working flow chart of a method for monitoring the air tightness of a power battery pack according to the present invention.
具体实施方式Detailed ways
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.
如图1所示，本发明的实施例提出一种动力电池包的气密性监测方法，应用于气密性监测控制器，所述方法包括：As shown in FIG. 1 , an embodiment of the present invention provides a method for monitoring the airtightness of a power battery pack, which is applied to an airtightness monitoring controller. The method includes:
S400、获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率；S400 , obtaining a power battery pack whose pressure value reaches a preset pressure value, and the rate of change of the pressure value within a preset time period;
S500、根据所述变化率，产生预警信息。S500. Generate early warning information according to the change rate.
本发明的上述方案，通过监测动力电池包在预设时长内的压力值的变化率，来判断动力电池包内的动力电池包的气密性是否存在需要进行预警的情况，避免了由于动力电池包使用老化所带来的气密性风险，提高了电动汽车的使用安全性和可靠性。In the above solution of the present invention, by monitoring the rate of change of the pressure value of the power battery pack within a preset period of time, it is determined whether the air tightness of the power battery pack in the power battery pack needs an early warning, avoiding the need for early warning due to the power battery pack. The air tightness risk brought by the aging of the package improves the safety and reliability of the electric vehicle.
本发明的一可选实施例中，步骤S400获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率之前，还包括：In an optional embodiment of the present invention, in step S400, obtaining a power battery pack whose pressure value reaches a preset pressure value, before the rate of change of the pressure value within a preset time period, further includes:
S100、获取对动力电池包充气加压的指令；S100. Obtain an instruction to inflate and pressurize the power battery pack;
S200、根据所述指令，控制充气装置对动力电池包充气加压；S200. According to the instruction, control the inflator to inflate and pressurize the power battery pack;
S300、若所述压力值达到预设压力值，则停止对动力电池包充气加压。S300. If the pressure value reaches a preset pressure value, stop inflating and pressurizing the power battery pack.
首先获取对动力电池包充气加压的指令，根据用户的需求对动力电池包的气密性进行监测，符合用户需求，有利于提高用户体验。对动力电池包充气加压直至压力值达到预设压力值，有利于提高监测的有效性，以及方法的准确性。First, obtain an instruction to inflate and pressurize the power battery pack, and monitor the airtightness of the power battery pack according to the user's needs, which is in line with the user's needs and is conducive to improving the user experience. Inflating and pressurizing the power battery pack until the pressure value reaches the preset pressure value is beneficial to improve the effectiveness of monitoring and the accuracy of the method.
本发明的一可选实施例中，步骤S100获取对动力电池包充气加压的指令，包括：In an optional embodiment of the present invention, step S100 obtains an instruction to inflate and pressurize the power battery pack, including:
在车辆启动后，产生对动力电池包充气加压的指令；或者，After the vehicle is started, a command to inflate and pressurize the power battery pack is generated; or,
接收用户终端发送的动力电池包气密性监测的请求，根据所述请求产生对动力电池包充气加压的指令。Receive a request for air tightness monitoring of the power battery pack sent by the user terminal, and generate an instruction to inflate and pressurize the power battery pack according to the request.
在车辆启动后，装置自动产生对动力电池包充气加压的指令，能够在车辆行驶过程中实时监测动力电池包的气密性，保障用户行车的安全性；用户有需要时，也可以通过向第二获取模块发送请求，进而得到动力电池包的气密性，灵活方便，有利于提高装置的适用性。After the vehicle is started, the device automatically generates an instruction to inflate and pressurize the power battery pack, which can monitor the airtightness of the power battery pack in real time during the driving process of the vehicle to ensure the safety of the user's driving; The second obtaining module sends a request to obtain the airtightness of the power battery pack, which is flexible and convenient, and is beneficial to improve the applicability of the device.
本发明的一可选实施例中，步骤S500根据所述变化率，产生预警信息，包括：In an optional embodiment of the present invention, step S500 generates early warning information according to the change rate, including:
若所述变化率大于或者等于第一预设值，且小于或者等于第二预设值，则发送第一预警信息；或者，If the rate of change is greater than or equal to the first preset value and less than or equal to the second preset value, first warning information is sent; or,
若所述变化率大于第二预设值，则发送第二预警信息；或者，If the rate of change is greater than the second preset value, send second warning information; or,
若所述变化率小于第一预设值，则产生反馈结果，并发送所述反馈结果。If the rate of change is less than the first preset value, a feedback result is generated, and the feedback result is sent.
第一预设值和第二预设值可以根据用户需求或者电动汽车的实际性能情况进行预先设定，提高监测的准确性；第一预警信息和第二预警信息可以根据动力电池包的气密性的好坏设置等级，比如第一预警信息可以只是预警，对用户进行提醒，第二预警信息中可以包括控制指令，如对汽车进行下电断高压的操作，提示用户需要去就近的4S店进行维修，提高用车安全性和装置的可靠性。The first preset value and the second preset value can be preset according to user needs or the actual performance of the electric vehicle to improve the accuracy of monitoring; the first warning information and the second warning information can be based on the airtightness of the power battery pack. For example, the first warning information can be just an early warning to remind the user, and the second warning information can include control instructions, such as the operation of powering off the car and cutting off the high voltage, prompting the user to go to the nearest 4S store Carry out maintenance to improve vehicle safety and device reliability.
如图2所示，本发明的实施例提出一种动力电池包的气密性监测装置，应用于气密性监测控制器，所述装置包括：As shown in FIG. 2 , an embodiment of the present invention proposes an airtightness monitoring device for a power battery pack, which is applied to an airtightness monitoring controller. The device includes:
第一获取模块，用于获取压力值达到预设压力值的动力电池包，在预设时长内的压力值的变化率；a first acquisition module, used to acquire the rate of change of the pressure value within the preset time period of the power battery pack whose pressure value reaches the preset pressure value;
处理模块，用于根据所述变化率，产生预警信息。The processing module is configured to generate early warning information according to the change rate.
本发明的上述方案，通过监测动力电池包在预设时长内的压力值的变化率，来判断动力电池包内的动力电池包的气密性是否存在需要进行预警的情况，避免了由于动力电池包使用老化所带来的气密性风险，提高了电动汽车的使用安全性和可靠性。In the above solution of the present invention, by monitoring the rate of change of the pressure value of the power battery pack within a preset period of time, it is determined whether the air tightness of the power battery pack in the power battery pack needs an early warning, avoiding the need for early warning due to the power battery pack. The air tightness risk brought by the aging of the package improves the safety and reliability of the electric vehicle.
本发明的一可选实施例中，所述装置还包括：In an optional embodiment of the present invention, the device further includes:
第二获取模块，用于获取对动力电池包充气加压的指令；The second obtaining module is used to obtain an instruction to inflate and pressurize the power battery pack;
控制模块，用于根据所述指令，控制充气装置对动力电池包充气加压；还用于a control module, used for controlling the inflation device to inflate and pressurize the power battery pack according to the instruction; also used for
若所述压力值达到预设压力值，则控制充气装置停止对动力电池包充气加压。If the pressure value reaches the preset pressure value, the inflator is controlled to stop inflating and pressurizing the power battery pack.
首先获取对动力电池包充气加压的指令，根据用户的需求对动力电池包的气密性进行监测，符合用户需求，有利于提高用户体验。对动力电池包充气加压直至压力值达到预设压力值，有利于提高监测的有效性，以及方法的准确性。First, obtain an instruction to inflate and pressurize the power battery pack, and monitor the airtightness of the power battery pack according to the user's needs, which is in line with the user's needs and is conducive to improving the user experience. Inflating and pressurizing the power battery pack until the pressure value reaches the preset pressure value is beneficial to improve the effectiveness of monitoring and the accuracy of the method.
本发明的一可选实施例中，第二获取模块，具体用于：In an optional embodiment of the present invention, the second acquisition module is specifically used for:
在车辆启动后，产生对动力电池包充气加压的指令；或者，After the vehicle is started, a command to inflate and pressurize the power battery pack is generated; or,
接收用户终端发送的动力电池包气密性监测的请求，根据所述请求产生对动力电池包充气加压的指令。Receive a request for air tightness monitoring of the power battery pack sent by the user terminal, and generate an instruction to inflate and pressurize the power battery pack according to the request.
在车辆启动后，装置自动产生对动力电池包充气加压的指令，能够在车辆行驶过程中实时监测动力电池包的气密性，保障用户行车的安全性；用户有需要时，也可以通过向第二获取模块发送请求，进而得到动力电池包的气密性，灵活方便，有利于提高装置的适用性。After the vehicle is started, the device automatically generates an instruction to inflate and pressurize the power battery pack, which can monitor the airtightness of the power battery pack in real time during the driving process of the vehicle to ensure the safety of the user's driving; The second obtaining module sends a request to obtain the airtightness of the power battery pack, which is flexible and convenient, and is beneficial to improve the applicability of the device.
本发明的一可选实施例中，处理模块，具体用于：In an optional embodiment of the present invention, the processing module is specifically used for:
若所述变化率大于或者等于第一预设值，且小于或者等于第二预设值，则发送第一预警信息；或者，If the rate of change is greater than or equal to the first preset value and less than or equal to the second preset value, first warning information is sent; or,
若所述变化率大于第二预设值，则发送第二预警信息；或者，If the rate of change is greater than the second preset value, send second warning information; or,
若所述变化率小于第一预设值，则产生反馈结果，并发送所述反馈结果。If the rate of change is less than the first preset value, a feedback result is generated, and the feedback result is sent.
第一预设值和第二预设值可以根据用户需求或者电动汽车的实际性能情况进行预先设定，提高监测的准确性；第一预警信息和第二预警信息可以根据动力电池包的气密性的好坏设置等级，比如第一预警信息可以只是预警，对用户进行提醒，第二预警信息中可以包括控制指令，如对汽车进行下电断高压的操作，提示用户需要去就近的4S店进行维修，提高用车安全性和装置的可靠性。The first preset value and the second preset value can be preset according to user needs or the actual performance of the electric vehicle to improve the accuracy of monitoring; the first warning information and the second warning information can be based on the airtightness of the power battery pack. For example, the first warning information can be just an early warning to remind the user, and the second warning information can include control instructions, such as the operation of powering off the car and cutting off the high voltage, prompting the user to go to the nearest 4S store Carry out maintenance to improve vehicle safety and device reliability.
需要说明的是，该装置是与上述图1所述的方法对应的装置，所示方法中的所有实现方式均适用于该装置的实施例中，也能达到同样的技术效果。It should be noted that the device is a device corresponding to the method described in FIG. 1 above, and all implementations in the shown method are applicable to the embodiments of the device, and the same technical effect can also be achieved.
本发明的实施例还提出一种电动汽车，包括气密性监测控制器，以及与所述气密性监测控制器电连接的充气装置、大气压力传感器，所述气密性监测控制器包括如图2所述的动力电池包的气密性监测装置。上述图2所示的动力电池包的气密性监测装置的所有实施例均适用于该电动汽车的实施例中，也能达到相同的技术效果。An embodiment of the present invention also provides an electric vehicle, including an airtightness monitoring controller, an inflator and an atmospheric pressure sensor electrically connected to the airtightness monitoring controller, the airtightness monitoring controller including: The air tightness monitoring device of the power battery pack shown in FIG. 2 . All the above-mentioned embodiments of the air tightness monitoring device for the power battery pack shown in FIG. 2 are applicable to the embodiments of the electric vehicle, and can also achieve the same technical effect.
本发明的实施例还提出一种存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行如图1所述的动力电池包的气密性监测方法。上述图1所示的动力电池包的气密性监测方法的所有实施例均适用于该存储介质的实施例中，也能达到相同的技术效果。An embodiment of the present invention also provides a storage medium on which a computer program is stored, and when the computer program is run by a processor, the method for monitoring the airtightness of a power battery pack as shown in FIG. 1 is executed. All the above-mentioned embodiments of the air tightness monitoring method for the power battery pack shown in FIG. 1 are applicable to the embodiments of the storage medium, and the same technical effect can also be achieved.
如图3所示，本发明实施例的一种动力电池包的气密性监测方法的一个工作流程是：车辆正常启动后，蓄电池给电池管理系统BMS及气密性监测控制器供电，此时BMS及气密性监测控制器开始工作，气密性监测控制器发出指令控制充气装置开始充气加压，大气压力传感器实时监测压力值，并实时发送给气密性监测控制器，当达到预定值(标定压力值)后，气密性监测控制器发出指令关闭充气装置，而大气压力传感器持续实时监测压力值，并实时发送给气密性监测控制器，气密性监测控制器根据这些信号输入，实时监控电池包内的气密性。当电池包内压力值的变化率不大，如第一预设值a≤变化率≤第二预设值b时，气密性监测控制器反馈预警信号给BMS，BMS上报给仪表显示预警信息，此时，车辆可行驶，同时仪表显示预警信息，提示用户需去就近的4S店进行检查；当电池包内压力值的变化率大，如变化率＞第二预设值b时，气密性监测控制器反馈故障信号给BMS，BMS上报给仪表显示故障信息，并执行下电断高压的操作，以此提示用户需去就近的4S店进行维修；气密性监测控制器将预警信息发送给仪表显示，使用户能够直观的看到该预警信息，进而进行处理，或者当驾驶员不方便观看时，气密性监测控制器也可以将预警信息发送给预先设置的用户终端，便于提醒使用驾驶员，或者气密性监测控制器也可以将预警信息同时发送给仪表和用户终端，确保驾驶员能够收到预警信息，提高驾驶安全性。另外，用户可通过终端，如手机、电脑等，实时查询电池包的气密性。此时，用户通过终端向气密性监测控制器发送动力电池包气密性监测的请求，远程信息处理器TBOX将该请求发送给BMS，BMS和气密性监测控制器开始工作，气密性监测控制器发出指令控制充气装置开始充气加压，大气压力传感器实时监测压力值，实时发送给气密性监测控制器，当达到预定值后，气密性监测控制器发出指令关闭充气装置，而大气压力传感器持续实时监测压力值，并实时发送给气密性监测控制器，气密性监测控制器根据这些信号输入，计算出t分钟(t为预设值)内电池包内的大气压力变化率，当电池包内压力值的变化率小，如压力值变化率＜第一预设值a时，气密性监测控制器可以编辑绿色的反馈结果发送至用户终端；当电池包内压力值的变化率不大，如第一预设值a≤压力值变化率≤第二预设值b时，气密性监测控制器可以编辑黄色的反馈结果发送至用户终端，提示用户车辆可行驶，但需去就近的4S店进行检查；当电池包内压力值的变化率大，如变化率＞第二预设值b时，气密性监测控制器可以编辑红色的反馈结果发送至用户终端，且BMS执行下电断高压的操作，车辆不能行驶，需去就近的4S店进行维修。上述反馈结果通过控制器局域网络CAN信号反馈给BMS，BMS将结果通过CAN信号反馈给TBOX，TBOX通过网络信号将结果反馈给用户终端。采用不同的颜色等级编辑反馈结果，便于用户能够直观的了解自身车辆动力电池包的气密性。As shown in FIG. 3 , a workflow of a method for monitoring the airtightness of a power battery pack according to an embodiment of the present invention is as follows: after the vehicle starts normally, the battery supplies power to the battery management system BMS and the airtightness monitoring controller. The BMS and the air tightness monitoring controller start to work, the air tightness monitoring controller sends an instruction to control the inflation device to start inflating and pressurizing, the atmospheric pressure sensor monitors the pressure value in real time, and sends it to the air tightness monitoring controller in real time. When the predetermined value is reached After (calibrating the pressure value), the air tightness monitoring controller sends an instruction to close the inflation device, while the atmospheric pressure sensor continuously monitors the pressure value in real time, and sends it to the air tightness monitoring controller in real time, and the air tightness monitoring controller inputs according to these signals , to monitor the air tightness in the battery pack in real time. When the change rate of the pressure value in the battery pack is not large, such as the first preset value a≤change rate≤second preset value b, the air tightness monitoring controller feeds back an early warning signal to the BMS, and the BMS reports it to the instrument to display the warning information , at this time, the vehicle can drive, and the instrument displays warning information, prompting the user to go to the nearest 4S store for inspection; when the change rate of the pressure value in the battery pack is large, such as the change rate > the second preset value b, the airtight The air tightness monitoring controller feeds back the fault signal to the BMS, and the BMS reports the fault information to the instrument, and performs the operation of power-off and high voltage, so as to remind the user to go to the nearest 4S shop for maintenance; the air tightness monitoring controller sends the warning information Display it to the instrument, so that the user can intuitively see the warning information, and then process it, or when the driver is inconvenient to watch, the air tightness monitoring controller can also send the warning information to the preset user terminal, which is convenient for reminding use The driver or the air tightness monitoring controller can also send the warning information to the instrument and the user terminal at the same time to ensure that the driver can receive the warning information and improve driving safety. In addition, users can query the air tightness of the battery pack in real time through terminals, such as mobile phones and computers. At this time, the user sends a request for airtightness monitoring of the power battery pack to the airtightness monitoring controller through the terminal, and the telematics processor TBOX sends the request to the BMS, and the BMS and the airtightness monitoring controller start to work, and the airtightness monitoring The controller sends an instruction to control the inflation device to start inflating and pressurizing. The atmospheric pressure sensor monitors the pressure value in real time and sends it to the air tightness monitoring controller in real time. The pressure sensor continuously monitors the pressure value in real time and sends it to the air-tightness monitoring controller in real time. The air-tightness monitoring controller calculates the rate of change of atmospheric pressure in the battery pack within t minutes (t is the preset value) based on these signal inputs. , when the change rate of the pressure value in the battery pack is small, such as the pressure value change rate < the first preset value a, the air tightness monitoring controller can edit the green feedback result and send it to the user terminal; when the pressure value in the battery pack changes The change rate is not large. For example, when the first preset value a≤pressure value change rate≤second preset value b, the air tightness monitoring controller can edit the yellow feedback result and send it to the user terminal to remind the user that the vehicle can be driven, but It is necessary to go to the nearest 4S store for inspection; when the change rate of the pressure value in the battery pack is large, such as the change rate > the second preset value b, the air tightness monitoring controller can edit the red feedback result and send it to the user terminal, and The BMS performs the operation of power-off and high-voltage, and the vehicle cannot be driven. It needs to go to the nearest 4S shop for maintenance. The above feedback results are fed back to the BMS through the CAN signal of the controller area network, the BMS feeds back the results to the TBOX through the CAN signal, and the TBOX feeds back the results to the user terminal through the network signal. Using different color levels to edit the feedback results, it is convenient for users to intuitively understand the airtightness of their own vehicle power battery packs.
本发明主要通过增加气密性监测控制器、充气装置、大气压力传感器等，与车上原有的电池管理系统BMS、组合仪表系统ICM、远程信息处理器TBOX等，实现联动来达到实时监测动力电池包的气密性及预警的目的。在车辆原有的安全级别上，以一定的成本及技术投入使整车的安全级别更上一层楼。本发明能提升整车安全性的预警能力，规避安全风险，同时加入用户远程查询功能，以达到更智能化、人性化的目的。The invention mainly realizes linkage with the original battery management system BMS, combination instrument system ICM, remote information processor TBOX, etc. on the vehicle by adding an air tightness monitoring controller, an inflator, an atmospheric pressure sensor, etc. to achieve real-time monitoring of the power battery. The air tightness of the bag and the purpose of the warning. On the original safety level of the vehicle, with a certain cost and technical investment, the safety level of the whole vehicle is improved to a higher level. The invention can improve the early warning capability of the safety of the whole vehicle, avoid safety risks, and at the same time add the user's remote query function, so as to achieve the purpose of being more intelligent and humanized.
本发明不仅能提升整车安全性的预警能力，同时也能保障车辆全生命周期的安全性，尤其是能规避车辆使用后期，电池包的使用老化所带来的气密性风险。The invention can not only improve the early warning capability of the safety of the whole vehicle, but also ensure the safety of the whole life cycle of the vehicle.
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.
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