A battery system, a method, device, terminal, and storage medium for airtightness monitoring.

Abstract

This invention discloses a battery system, an airtightness monitoring method, device, terminal, and storage medium, belonging to the field of electric vehicle technology. It includes an execution module and a high-voltage transmission module electrically connected to the battery module. The execution module is electrically connected to a real-time airtightness monitoring device, the high-voltage transmission module, and a battery control module. The battery control module is electrically connected to a signal acquisition module and a low-voltage transmission module. The real-time airtightness monitoring device includes a terminal electrically connected to the battery control module. The air pressure control module is connected to an air pressure regulation module and an air pressure acquisition module. This patent provides that when the vehicle is powered on at high voltage, the air pressure regulation module maintains an intermittent working state, keeping the air pressure value inside the battery pack at a level lower than atmospheric pressure. The real-time monitoring of the air pressure value inside the pack by a pre-installed air pressure acquisition module determines whether the airtightness of the battery pack meets the requirements.

Description

Technical Field

[0001] This invention discloses a battery system, an airtightness monitoring method, a device, a terminal, and a storage medium, belonging to the field of electric vehicle technology. Background Technology

[0002] With the widespread adoption of electric vehicles, the safety of power batteries, which serve as the energy storage and output units for electric vehicles, is receiving increasing attention. During the battery's lifespan, if gases, liquids, or solids from outside the battery pack enter the pack, the battery's safety cannot be guaranteed, potentially seriously endangering the lives of passengers. Therefore, it is necessary to monitor the airtightness of the battery pack and to promptly report a "battery pack airtightness failure" warning signal when the airtightness is substandard.

[0003] As a factor affecting battery safety, the airtightness of power batteries has attracted much attention, and research on its monitoring methods has been ongoing. Currently, the airtightness of battery packs is monitored by increasing the internal air pressure through a built-in air pressure detection module and monitoring changes in that pressure. This module activates upon receiving an external excitation signal, increasing the internal air pressure, and a pressure sensor detects any abnormalities to determine if the battery pack's airtightness is up to standard. However, this method cannot provide real-time monitoring of battery pack airtightness. Furthermore, increased internal pressure can cause the pressure relief valve to open unexpectedly, affecting the accuracy of airtightness measurements. Additionally, this method requires a pre-installed air pump within the battery pack, which reduces the battery pack's energy density and impacts the vehicle's driving range. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a battery system, airtightness monitoring method, device, terminal, and storage medium that can meet the requirements for real-time monitoring and alarm of power battery airtightness. When the battery airtightness does not meet the set requirements, it can promptly report the fault, minimizing the danger caused by unqualified battery airtightness.

[0005] The technical solution of the present invention is as follows:

[0006] According to a first aspect of the present invention, a battery system is provided, comprising an execution module and a high-voltage transmission module electrically connected to a battery module, the execution module being electrically connected to a real-time airtightness monitoring device, the high-voltage transmission module, and a battery control module, the battery control module being electrically connected to a signal acquisition module and a low-voltage transmission module, the real-time airtightness monitoring device including a terminal electrically connected to the battery control module, the air pressure control module being connected to an air pressure regulation module and an air pressure acquisition module, the battery module, the execution module, the high-voltage transmission module, the battery control module, the signal acquisition module, the terminal, the air pressure acquisition module, and the low-voltage transmission module being disposed inside a battery pack, the air pressure regulation module being disposed outside the battery pack, and the air pressure regulation module being connected to the internal space of the battery pack via a pipeline.

[0007] Preferably, the low-voltage transmission module is electrically connected to the vehicle control module located outside the battery pack, and the high-voltage transmission module is electrically connected to an external load located outside the battery pack.

[0008] According to a second aspect of the present invention, an airtightness monitoring method is provided, comprising:

[0009] Upon receiving the air tightness detection start signal, the air pressure acquisition module is controlled to acquire the initial air pressure value of the battery pack;

[0010] When the pressure inside the battery pack is adjusted to the preset pressure value, determine the relationship curve between the adjustment time period and the real-time air pressure, and determine the airtightness of the battery pack based on the battery pack airtightness threshold curve.

[0011] Preferably, the step of determining the relationship curve between the adjustment time period and the real-time air pressure when adjusting the pressure inside the battery pack to a preset pressure value, and determining the airtightness of the battery pack based on the battery pack airtightness threshold curve, includes:

[0012] When the pressure regulation module adjusts the pressure inside the battery pack to a first preset pressure value, it determines the relationship curve between the first adjustment time period and the real-time pressure.

[0013] By comparing the curve of the relationship between the first adjustment time period and real-time air pressure with the curve of the air tightness threshold of the first stage battery pack in the corresponding segment from the initial air pressure value to the first preset pressure value, it is determined whether the slope of the curve of the relationship between the first adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the first stage battery pack.

[0014] Yes, the battery pack is airtight and proceeds to the next step;

[0015] No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop;

[0016] The system is left to stand for a preset detection period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the detection period, the relationship curve between the second adjustment period and the real-time air pressure is determined.

[0017] By comparing the curve of the relationship between the second adjustment time period and real-time air pressure with the curve of the air tightness threshold of the battery pack in the second stage, it is determined whether the slope of the curve of the relationship between the second adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the battery pack in the second stage:

[0018] Yes, the battery pack is airtight and proceeds to the next step;

[0019] No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop;

[0020] When the pressure regulation module adjusts the pressure inside the battery pack to the first preset pressure value, it determines the relationship curve between the third adjustment time period and the real-time pressure.

[0021] By comparing the relationship curve between the third adjustment time period and real-time air pressure with the third-stage battery pack air tightness threshold curve in the corresponding segment from the second preset pressure value to the first preset pressure value, it is determined whether the slope of the relationship curve between the third adjustment time period and real-time air pressure is less than that of the third-stage battery pack air tightness threshold curve P3.

[0022] Yes, the battery pack is airtight and is repeatedly left to stand for a preset testing period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the testing period, the relationship curve between the second adjustment period and the real-time air pressure is determined.

[0023] No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop.

[0024] Preferably, the battery pack airtightness threshold curve for the first stage is specifically represented as follows:

[0025]

[0026] Wherein, P1 is the current pressure threshold value in the first segment of the battery pack, △S is the flow rate of the air pressure regulation module, △M is the flow rate of the battery pack's natural air leakage, ρ is the air density, V is the volume of air that can be arranged in the battery pack, t is the adjustment time, and P0 is the initial air pressure value.

[0027] Preferably, the second-stage battery pack airtightness threshold curve is specifically represented as follows:

[0028]

[0029] Where: P2 is the threshold value of the current battery pack pressure in the second segment, P 预设1 This is the first preset pressure value.

[0030] Preferably, the third-stage battery pack airtightness threshold curve is specifically represented as follows:

[0031]

[0032] Where: P3 is the threshold value of the current battery pack pressure in the third segment, P 预设2 This is the second preset pressure value.

[0033] According to a third aspect of the present invention, an airtightness monitoring device is provided, comprising:

[0034] The acquisition module is used to control the air pressure acquisition module to acquire the initial air pressure value of the battery pack when the air tightness detection start signal is received;

[0035] The judgment module is used to determine the relationship curve between the adjustment time period and the real-time air pressure when the pressure inside the battery pack is adjusted to the preset pressure value, and to determine the airtightness of the battery pack according to the airtightness threshold curve of the battery pack.

[0036] According to a fourth aspect of the present invention, a terminal is provided, comprising:

[0037] One or more processors;

[0038] Memory for storing the one or more processor-executable instructions;

[0039] Wherein, the one or more processors are configured as follows:

[0040] Perform the method described in the first aspect of the embodiments of the present invention.

[0041] According to a fifth aspect of the present invention, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to perform the method described in the first aspect of the present invention.

[0042] According to a sixth aspect of the present invention, an application product is provided that, when the application product is running on a terminal, causes the terminal to execute the method described in the first aspect of the present invention.

[0043] The beneficial effects of this invention are as follows:

[0044] This patent provides a battery system, an airtightness monitoring method, device, terminal, and storage medium. When the vehicle is powered on, the air pressure regulating module maintains an intermittent working state to keep the air pressure value inside the battery pack at a level lower than atmospheric pressure. By monitoring the air pressure value inside the pack in real time through a pre-installed air pressure acquisition module, it is determined whether the airtightness of the battery pack meets the requirements. This method will not cause the battery pack pressure relief valve to open unexpectedly. At the same time, placing the air pressure regulating module that reduces the pressure of the battery pack outside the battery pack can increase the energy density of the battery pack.

[0045] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the electrical connections of a battery system according to an exemplary embodiment;

[0047] Figure 2 This is a schematic diagram of the electrical connections of a real-time airtightness monitoring device according to an exemplary embodiment;

[0048] Figure 3 This is a flowchart illustrating an airtightness monitoring method according to an exemplary embodiment;

[0049] Figure 4 This is a spliced ​​battery pack air tightness threshold calibration curve illustrating an air tightness monitoring method according to an exemplary embodiment;

[0050] Figure 5 This is a battery pack air tightness monitoring curve during a first adjustment period in an air tightness monitoring method according to an exemplary embodiment;

[0051] Figure 6 This is a battery pack air tightness monitoring curve during a second adjustment period in an air tightness monitoring method according to an exemplary embodiment;

[0052] Figure 7 This is a battery pack air tightness monitoring curve during the third adjustment time period in an air tightness monitoring method according to an exemplary embodiment;

[0053] Figure 8 This is a schematic block diagram illustrating the structure of a low-speed pedestrian warning sound design system for electric vehicles, according to an exemplary embodiment.

[0054] Figure 9 This is a schematic block diagram of a terminal structure according to an exemplary embodiment. Detailed Implementation

[0055] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] Example 1

[0059] Figure 1-2 This is a battery system according to an exemplary embodiment, including: a high-voltage transmission module, a low-voltage transmission module, a battery module, a battery control module, an execution module, a high-voltage connection module, a low-voltage connection module, a signal acquisition module, and a real-time airtightness monitoring device. The execution module and the high-voltage transmission module are electrically connected to the battery module, and the execution module is electrically connected to the real-time airtightness monitoring device, the high-voltage transmission module, and the battery control module. The execution module can be in an open state and a closed state. The battery module consists of N battery cells.

[0060] The high-voltage connection module connects the cells in series and parallel and the execution module in series to form a high-voltage circuit for the battery pack. It is then connected to the external load of the battery pack through the high-voltage transmission module to provide the required power output to the external load. The signal acquisition module and the execution module are connected to the battery control module through the low-voltage connection module. The battery control module is also connected to the vehicle control module outside the battery pack through the low-voltage transmission module. The battery control module can communicate with the vehicle control module outside the battery pack based on the signals acquired by the signal acquisition module. The battery control module can also control the opening and closing of the high-voltage circuit by adjusting the state of the execution module. The airtightness real-time monitoring device can monitor the airtightness inside the battery pack in real time.

[0061] The real-time airtightness monitoring device includes a terminal electrically connected to the battery control module, an air pressure control module connected to the air pressure regulation module and the air pressure acquisition module, a battery module, an execution module, a high-voltage transmission module, a battery control module, a signal acquisition module, a terminal, an air pressure acquisition module and a low-voltage transmission module respectively located inside the battery pack, an air pressure regulation module, a vehicle control module and an external load installed outside the battery pack, an air pressure regulation module connected to the internal space of the battery pack via a pipeline, a low-voltage transmission module electrically connected to the vehicle control module, and a high-voltage transmission module electrically connected to the external load.

[0062] The air pressure regulation module is used to regulate the air pressure value inside the battery pack. It is pre-set in the vehicle environment outside the battery pack and connected to the inside of the battery pack through connecting pipes. It is connected to the air pressure control module through a data transmission harness. Its power source is the vehicle's 12V battery. The working flow rate Δs of the air pressure regulation module is required not to affect the safety of the battery pack, meet the requirements of battery pack airtightness monitoring, and minimize the power consumption of the air pressure regulation module. Δs can be obtained through actual engineering calibration methods, model prediction, and simulation calculation.

[0063] The air pressure acquisition module and the air pressure control module are located inside the battery pack. The air pressure acquisition module is used to acquire the air pressure value inside the battery pack. This module consists of M sampling units inside the battery pack and is connected to the air pressure control module through a data transmission harness. Its signal acquisition range is [A0, A3] and its sensitivity is δ. It is required to meet the air tightness monitoring requirements of the battery pack.

[0064] The terminal is used to adjust the working status of the air pressure regulation module and to monitor the air tightness of the battery pack in real time. The working status of the real-time battery pack air tightness monitoring device is defined as follows: after the vehicle completes high-voltage power-on, the air pressure regulation module starts working and adjusts its working status according to the terminal instructions. When the air pressure regulation module is working, the gas inside the battery pack is drawn to the outside of the battery pack, reducing the air pressure inside the battery pack. After the vehicle's high-voltage power-off, the air pressure regulation module stops working.

[0065] Example 2

[0066] This invention provides an airtightness monitoring method, which is implemented by a terminal, the terminal including at least a CPU, etc. Figure 3 As shown, the method includes the following steps:

[0067] Step S101: Upon receiving the air tightness detection start signal, control the air pressure acquisition module to acquire the initial air pressure value of the battery pack.

[0068] When the vehicle is powered on, upon receiving the air tightness detection start signal, the terminal controls the air pressure acquisition module to obtain the initial air pressure value of the battery pack, and then performs an air tightness test on the battery pack.

[0069] Step S102: When the pressure inside the battery pack is adjusted to the preset pressure value, determine the relationship curve between the adjustment time period and the real-time air pressure, and determine the airtightness of the battery pack according to the battery pack airtightness threshold curve. The specific content is as follows:

[0070] The battery pack airtightness threshold curve is divided into three stages, obtained through actual engineering calibration. The three calibration curves are stored in the terminal. 预设1 and P 预设2 The airtightness threshold curves of the battery pack in stages 1, 2, and 3 can be obtained through actual engineering calibration methods, model prediction, and simulation calculations, according to P. 预设曲线1 +n×(P 预设曲线2 +P 预设曲线3 By stitching together the time sequences, a complete airtightness threshold curve can be obtained. n is positively correlated with the vehicle's operating time. The stitched battery pack airtightness threshold curve is shown below. Figure 4 As shown.

[0071] Retrieve the first-stage battery pack airtightness threshold curve P 预设曲线1 The first-stage battery pack airtightness threshold curve P1 is specifically represented as follows:

[0072]

[0073] Wherein, P1 is the current pressure threshold value in the first segment of the battery pack, △S is the flow rate of the air pressure regulation module, △M is the flow rate of the battery pack's natural air leakage, ρ is the air density, V is the volume of air that can be arranged in the battery pack, t1 is the adjustment time, and P0 is the initial air pressure value.

[0074] Find the value P in the curve that is equal to the air pressure P inside the battery pack at this moment, according to the time sequence. start ,like Figure 5 As shown, this point is used as the starting point for comparing the battery pack airtightness threshold curve with the measured battery pack air pressure curve. The air pressure regulation module starts working at a flow rate Δs, and the air pressure acquisition module monitors the air pressure value inside the battery pack in real time, adjusting the pressure inside the battery pack to the first preset pressure value P. 预设1 The curve showing the relationship between the first adjustment period and real-time air pressure was determined.

[0075] By comparing the curve showing the relationship between the first adjustment period and real-time air pressure with the curve showing the airtightness threshold of the battery pack in the first stage from the initial air pressure value to the first preset pressure value, it is determined whether the slope of the curve showing the relationship between the first adjustment period and real-time air pressure is less than that of the curve P1 showing the airtightness threshold of the battery pack in the first stage.

[0076] Yes, the battery pack airtightness is qualified; proceed to the next step.

[0077] No, if the battery pack airtightness fails, a "Battery pack airtightness fails" signal will be reported and monitoring will stop.

[0078] When the air pressure inside the battery pack equals P 预设1 When the pressure regulation module stops working, it remains stationary within a preset detection time period. The relationship curve between the second regulation time period and the real-time pressure is determined by acquiring the pressure from the first preset pressure value to the second preset pressure value within that detection time period. Figure 6 As shown;

[0079] Retrieve the second-stage battery pack airtightness threshold curve P 预设曲线2 The second-stage battery pack airtightness threshold curve P2 is specifically represented as follows:

[0080]

[0081] Where: P2 is the threshold value of the current battery pack pressure in the second segment, P 预设1 This is the first preset pressure value.

[0082] By comparing the curve of the relationship between the second adjustment time period and real-time air pressure with the curve of the air tightness threshold of the battery pack in the second stage, it is determined whether the slope of the curve of the relationship between the second adjustment time period and real-time air pressure is less than that of the curve P2 of the air tightness threshold of the battery pack in the second stage:

[0083] Yes, the battery pack airtightness is qualified; proceed to the next step.

[0084] No, if the battery pack airtightness fails, a "Battery pack airtightness fails" signal will be reported and monitoring will stop.

[0085] When the air pressure inside the battery pack P equals P 预设2 At that time, the air pressure regulation module continues to work at a flow rate Δs. When the air pressure regulation module adjusts the pressure inside the battery pack to the first preset pressure value, the relationship curve between the third adjustment time period and the real-time air pressure is determined, such as... Figure 7 As shown;

[0086] Retrieve the second-stage battery pack airtightness threshold curve P 预设曲线3 The third-stage battery pack airtightness threshold curve P3 is specifically represented as follows:

[0087]

[0088] Where: P3 is the threshold value of the current battery pack pressure in the third segment, P 预设2 This is the second preset pressure value.

[0089] By comparing the curve showing the relationship between the third adjustment time period and real-time air pressure with the third-stage battery pack airtightness threshold curve P3 in the corresponding segment from the second preset pressure value to the first preset pressure value, it can be determined whether the slope of the curve showing the relationship between the third adjustment time period and real-time air pressure is less than that of the third-stage battery pack airtightness threshold curve P3.

[0090] Yes, if the battery pack airtightness is qualified and the vehicle continues to run, it will be placed still within the preset detection period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained within the detection period, the relationship curve between the second adjustment period and the real-time air pressure is determined. The battery pack airtightness monitoring work of the second stage and the third stage is repeated in sequence. When the vehicle is turned off at any time, the battery pack airtightness monitoring work will stop immediately. When the vehicle is restarted, the battery pack air pressure value measurement and airtightness monitoring work will start again from the first stage.

[0091] No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop.

[0092] Example 3

[0093] In an exemplary embodiment, an airtightness monitoring device is also provided, such as Figure 8 As shown, it includes:

[0094] The acquisition module 210 is used to control the air pressure acquisition module to acquire the initial air pressure value of the battery pack when it receives the air tightness detection start signal;

[0095] The judgment module 220 is used to determine the relationship curve between the adjustment time period and the real-time air pressure when the pressure inside the battery pack is adjusted to the preset pressure value, and to determine the airtightness of the battery pack according to the airtightness threshold curve of the battery pack.

[0096] When the vehicle is powered on, the air pressure regulating module of this invention maintains an intermittent working state to keep the air pressure in the battery pack at a level lower than atmospheric pressure. The air pressure is monitored in real time by a pre-installed air pressure acquisition module inside the pack to determine whether the air tightness of the battery pack meets the requirements. This method will not cause the battery pack pressure relief valve to open unexpectedly. At the same time, placing the air pressure regulating module that reduces the pressure in the battery pack outside the battery pack can increase the energy density of the battery pack.

[0097] Example 4

[0098] Figure 9 This is a structural block diagram of a terminal provided in an embodiment of this application. The terminal can be the terminal in the above embodiments. The terminal 300 can be a portable mobile terminal, such as a smartphone or tablet computer. The terminal 300 may also be referred to as user equipment, portable terminal, or other names.

[0099] Typically, terminal 300 includes a processor 301 and a memory 302.

[0100] Processor 301 may include one or more processing cores, such as a quad-core processor or an octa-core processor. Processor 301 may be implemented using at least one hardware form selected from DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). Processor 301 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 301 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 301 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0101] The memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. The memory 302 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 302 are used to store at least one instruction, which is executed by the processor 301 to implement an airtightness monitoring method provided in this application.

[0102] In some embodiments, the terminal 300 may also optionally include: a peripheral device interface 303 and at least one peripheral device. Specifically, the peripheral device includes at least one of: a radio frequency circuit 304, a touch display screen 305, a camera 306, an audio circuit 307, a positioning component 308, and a power supply 309.

[0103] The peripheral device interface 303 can be used to connect at least one I / O (Input / Output) related peripheral device to the processor 301 and the memory 302. In some embodiments, the processor 301, memory 302, and peripheral device interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 301, memory 302, and peripheral device interface 303 can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0104] The radio frequency (RF) circuit 304 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 304 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 304 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals back into electrical signals. Optionally, the RF circuit 304 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit 304 can communicate with other terminals through at least one wireless communication protocol. This wireless communication protocol includes, but is not limited to: the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit 304 may also include circuitry related to NFC (Near Field Communication), which is not limited in this application.

[0105] The touch display screen 305 is used to display a UI (User Interface). This UI may include graphics, text, icons, videos, and any combination thereof. The touch display screen 305 also has the ability to collect touch signals on or above its surface. These touch signals can be input as control signals to the processor 301 for processing. The touch display screen 305 is used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. In some embodiments, there may be one touch display screen 305, which is located on the front panel of the terminal 300; in other embodiments, there may be at least two touch display screens, respectively located on different surfaces of the terminal 300 or in a folded design; in still other embodiments, the touch display screen 305 may be a flexible display screen, located on a curved or folded surface of the terminal 300. Furthermore, the touch display screen 305 may be configured as a non-rectangular, irregular shape, i.e., a non-rectangular screen. The touch display screen 305 may be made of materials such as LCD (Liquid Crystal Display) or OLED (Organic Light-Emitting Diode).

[0106] Camera assembly 306 is used to acquire images or videos. Optionally, camera assembly 306 includes a front-facing camera and a rear-facing camera. Typically, the front-facing camera is used for video calls or selfies, and the rear-facing camera is used for taking photos or videos. In some embodiments, there are at least two rear-facing cameras, which are any one of a main camera, a depth-sensing camera, and a wide-angle camera, to achieve background blurring by fusion of the main camera and the depth-sensing camera, and panoramic shooting and VR (Virtual Reality) shooting by fusion of the main camera and the wide-angle camera. In some embodiments, camera assembly 306 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash is a combination of a warm light flash and a cool light flash, which can be used for light compensation at different color temperatures.

[0107] Audio circuit 307 provides an audio interface between the user and terminal 300. Audio circuit 307 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, converting the sound waves into electrical signals that are input to processor 301 for processing, or input to radio frequency circuit 304 for voice communication. For stereo sound acquisition or noise reduction purposes, multiple microphones may be used, each located at a different part of terminal 300. The microphone may also be an array microphone or an omnidirectional microphone. The speaker is used to convert electrical signals from processor 301 or radio frequency circuit 304 into sound waves. The speaker may be a conventional diaphragm speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can convert electrical signals not only into audible sound waves but also into inaudible sound waves for purposes such as distance measurement. In some embodiments, audio circuit 307 may also include a headphone jack.

[0108] The positioning component 308 is used to determine the current geographic location of the terminal 300 in order to enable navigation or LBS (Location Based Service). The positioning component 308 can be a positioning component based on the US GPS (Global Positioning System), China's BeiDou system, or Russia's Galileo system.

[0109] The power supply 309 is used to power the various components in the terminal 300. The power supply 309 can be AC ​​power, DC power, a disposable battery, or a rechargeable battery. When the power supply 309 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired connection, while a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0110] Those skilled in the art will understand that Figure 9 The structure shown does not constitute a limitation on terminal 300, and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0111] Example 5

[0112] In an exemplary embodiment, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements an airtightness monitoring method as provided in all embodiments of the present application.

[0113] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0114] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including—but not limited to—electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of transmitting, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0115] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0116] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0117] Example 6

[0118] In an exemplary embodiment, an application product is also provided, including one or more instructions that can be executed by the processor 301 of the aforementioned device to complete the aforementioned airtightness monitoring method.

[0119] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A method for monitoring air tightness, applied to a battery system, the battery system comprising an execution module and a high-voltage transmission module electrically connected to a battery module, the execution module being electrically connected to a real-time air tightness monitoring device, the high-voltage transmission module, and a battery control module, the battery control module being electrically connected to a signal acquisition module and a low-voltage transmission module, the real-time air tightness monitoring device comprising a terminal electrically connected to the battery control module, an air pressure control module being connected to an air pressure regulation module and an air pressure acquisition module, the battery module, execution module, high-voltage transmission module, battery control module, signal acquisition module, terminal, air pressure acquisition module, and low-voltage transmission module being disposed inside a battery pack, the air pressure regulation module being disposed outside the battery pack, the air pressure regulation module being connected to the internal space of the battery pack via a pipeline, the low-voltage transmission module being electrically connected to a vehicle control module disposed outside the battery pack, and the high-voltage transmission module being electrically connected to an external load disposed outside the battery pack, characterized in that... The airtightness monitoring method includes: Upon receiving the air tightness detection start signal, the air pressure acquisition module is controlled to acquire the initial air pressure value of the battery pack; When the pressure inside the battery pack is adjusted to the preset pressure value, determine the relationship curve between the adjustment time period and the real-time air pressure, and determine the airtightness of the battery pack based on the airtightness threshold curve of the battery pack. The step of determining the relationship curve between the adjustment time period and the real-time air pressure when adjusting the pressure inside the battery pack to a preset pressure value, and determining the airtightness of the battery pack based on the battery pack airtightness threshold curve, includes: When the pressure regulation module adjusts the pressure inside the battery pack to a first preset pressure value, it determines the relationship curve between the first adjustment time period and the real-time pressure. By comparing the curve of the relationship between the first adjustment time period and real-time air pressure with the curve of the air tightness threshold of the first stage battery pack in the corresponding segment from the initial air pressure value to the first preset pressure value, it is determined whether the slope of the curve of the relationship between the first adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the first stage battery pack. Yes, the battery pack is airtight and proceeds to the next step; No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop; The system is left to stand for a preset detection period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the detection period, the relationship curve between the second adjustment period and the real-time air pressure is determined. By comparing the curve of the relationship between the second adjustment time period and real-time air pressure with the curve of the air tightness threshold of the battery pack in the second stage, it is determined whether the slope of the curve of the relationship between the second adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the battery pack in the second stage: Yes, the battery pack is airtight and proceeds to the next step; No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop; When the pressure regulation module adjusts the pressure inside the battery pack to the first preset pressure value, it determines the relationship curve between the third adjustment time period and the real-time pressure. By comparing the relationship curve between the third adjustment time period and real-time air pressure with the third-stage battery pack airtightness threshold curve in the corresponding segment from the second preset pressure value to the first preset pressure value, it is determined whether the slope of the relationship curve between the third adjustment time period and real-time air pressure is less than that of the third-stage battery pack airtightness threshold curve. Yes, the battery pack is airtight and is repeatedly left to stand for a preset testing period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the testing period, the relationship curve between the second adjustment period and the real-time air pressure is determined. No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop.

2. The airtightness monitoring method according to claim 1, characterized in that, The specific representation of the battery pack airtightness threshold curve in the first stage is as follows: Wherein, P1 is the current pressure threshold value in the first segment of the battery pack, △S is the flow rate of the air pressure regulation module, △M is the flow rate of the battery pack's natural air leakage, ρ is the air density, V is the volume of air that can be arranged in the battery pack, t is the adjustment time, and P0 is the initial air pressure value.

3. The airtightness monitoring method according to claim 2, characterized in that, The specific representation of the battery pack airtightness threshold curve in the second stage is as follows: Where: P2 is the threshold value of the current battery pack pressure in the second segment, P 预设1 This is the first preset pressure value.

4. The airtightness monitoring method according to claim 3, characterized in that, The specific representation of the third-stage battery pack airtightness threshold curve is as follows: Where: P3 is the threshold value of the current battery pack pressure in the third segment, P 预设2 This is the second preset pressure value.

5. An airtightness monitoring device, characterized in that, include: The acquisition module is used to control the air pressure acquisition module to acquire the initial air pressure value of the battery pack when the air tightness detection start signal is received; The judgment module is used to determine the relationship curve between the adjustment time period and the real-time air pressure when the pressure inside the battery pack is adjusted to a preset pressure value, and to determine the airtightness of the battery pack based on the battery pack airtightness threshold curve; wherein, determining the relationship curve between the adjustment time period and the real-time air pressure when the pressure inside the battery pack is adjusted to a preset pressure value, and determining the airtightness of the battery pack based on the battery pack airtightness threshold curve, includes: When the control air pressure regulation module adjusts the pressure inside the battery pack to the first preset pressure value, it determines the relationship curve between the first adjustment time period and the real-time air pressure. By comparing the curve of the relationship between the first adjustment time period and real-time air pressure with the curve of the air tightness threshold of the first stage battery pack in the corresponding segment from the initial air pressure value to the first preset pressure value, it is determined whether the slope of the curve of the relationship between the first adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the first stage battery pack. Yes, the battery pack is airtight and proceeds to the next step; No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop; The system is left to stand for a preset detection period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the detection period, the relationship curve between the second adjustment period and the real-time air pressure is determined. By comparing the curve of the relationship between the second adjustment time period and real-time air pressure with the curve of the air tightness threshold of the battery pack in the second stage, it is determined whether the slope of the curve of the relationship between the second adjustment time period and real-time air pressure is less than that of the curve of the air tightness threshold of the battery pack in the second stage: Yes, the battery pack is airtight and proceeds to the next step; No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop; When the pressure regulation module adjusts the pressure inside the battery pack to the first preset pressure value, it determines the relationship curve between the third adjustment time period and the real-time pressure. By comparing the relationship curve between the third adjustment time period and real-time air pressure with the third-stage battery pack airtightness threshold curve in the corresponding segment from the second preset pressure value to the first preset pressure value, it is determined whether the slope of the relationship curve between the third adjustment time period and real-time air pressure is less than that of the third-stage battery pack airtightness threshold curve. Yes, the battery pack is airtight and is repeatedly left to stand for a preset testing period. When the first preset pressure value to the second preset pressure value of the air pressure acquisition module is obtained during the testing period, the relationship curve between the second adjustment period and the real-time air pressure is determined. No, if the battery pack airtightness fails, a "battery pack airtightness fails" signal will be reported and monitoring will stop.

6. A terminal, characterized in that, include: One or more processors; Memory for storing the one or more processor-executable instructions; Wherein, the one or more processors are configured as follows: Perform an airtightness monitoring method as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal, the terminal is able to perform an airtightness monitoring method as described in any one of claims 1 to 4.

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