Battery system, vehicle

Abstract

This application discloses a battery system and a vehicle. The battery system includes a battery casing, multiple battery cell units, multiple monitoring units, and a main control circuit. The battery casing is used to house multiple battery cell units, and the multiple battery cell units are arranged in an array inside the battery casing. At least one monitoring unit is located in the area between the air inlet and the air outlet of the battery casing. The monitoring unit monitors the concentration of a specified gas inside the battery casing and generates a gas monitoring signal. The main control circuit generates an alarm signal when the gas monitoring signal is greater than a gas concentration threshold, alerting the user to a battery system malfunction. By pre-monitoring harmful gases inside the battery pack, the user's reaction time to battery pack malfunctions is increased.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery system and a vehicle. Background Technology

[0002] With the development of new energy batteries, research is underway to improve battery safety by using inorganic solid electrolytes instead of organic solvent electrolytes in all-solid-state lithium batteries. All-solid-state lithium batteries offer superior safety compared to lithium-ion batteries, particularly in terms of their resistance to thermal runaway caused by short circuits. Among inorganic solid electrolytes, sulfide-based solid electrolytes exhibit higher ionic conductivity than oxide-based solid electrolytes.

[0003] However, since the battery pack contains a variety of electronic components, if hydrogen sulfide gas leaks from the inorganic solid electrolyte, it will have a significant negative impact on the stability of the battery pack. Utility Model Content

[0004] In view of the above problems, this application provides a battery system and vehicle that can solve the problem of hydrogen sulfide gas leakage affecting the stability of the battery pack in the related art.

[0005] The first aspect of this application provides a battery system, which includes: a battery casing, multiple battery cell units, multiple monitoring units, and a main control circuit; The battery housing is used to house multiple battery cell units and multiple monitoring units, with an array of multiple battery cell units arranged inside the battery housing; At least one monitoring unit is disposed in the area between the air inlet and the air outlet of the battery casing. The monitoring unit is used to monitor the concentration of a specified gas inside the battery casing and generate a gas monitoring signal. The main control circuit is connected to multiple monitoring units and is used to generate an alarm signal when the gas monitoring signal is greater than the gas concentration threshold.

[0006] In the technical solution of this application embodiment, at least one monitoring unit is set in the area between the air inlet and the air outlet of the battery casing, and multiple battery cell units are set in the area between the air inlet and the air outlet of the battery casing. The monitoring unit monitors the concentration of a specified gas in the battery casing and generates a gas monitoring signal. When the gas monitoring signal is greater than the gas concentration threshold, the main control circuit generates an alarm signal to remind the user of the abnormality of the battery system. By monitoring the harmful gas in the battery pack in real time, the user's reaction time when facing the abnormality of the battery pack is increased, and the safety hazards caused by the leakage of harmful gas in the battery pack are reduced.

[0007] In some embodiments, at least one monitoring unit is disposed between adjacent cell units; and / or At least one monitoring unit is located in the bottom area of ​​the battery casing; and / or At least one monitoring unit is located at the air outlet of the battery casing; and / or At least one monitoring unit is located at the air inlet of the battery casing; and / or At least two monitoring units are respectively located in two corner areas of the battery casing.

[0008] In the technical solution of this application embodiment, the gas inside the battery casing is usually leaked from inside the battery cell. By placing a monitoring unit between adjacent battery cells, gas leaks can be quickly detected in the battery cells on both sides of the monitoring unit. Since the density of the leaking gas is usually greater than that of air or nitrogen, placing the monitoring unit in the bottom area of ​​the battery casing can monitor the cumulative gas concentration of the slowly leaking gas from the battery cells inside the battery casing, reducing the risk that the accumulated gas concentration inside the battery casing will reach a threshold due to the slow leakage of gas from the battery cells. Since all the gas in the battery casing needs to be discharged through the air outlet, by placing the monitoring unit at the air outlet of the battery casing, the gas concentration leaked from all battery cells inside the battery casing can be monitored in aggregate, avoiding the risk that the total gas concentration will reach a threshold when multiple battery cells leak gas. To improve the detection accuracy of the gas concentration inside the battery casing, by placing a monitoring unit at the air inlet of the battery casing, the main control circuit can compare the gas monitoring signal generated by the monitoring unit at the air inlet of the battery casing with the gas monitoring signal at the air outlet of the battery casing, and correct the monitoring unit according to the comparison result, or determine the change in gas concentration inside the battery casing according to the comparison result. In some embodiments, by setting monitoring units in at least two corner areas within the battery casing, the flow of leaked gas within the battery casing can be monitored, it can be determined whether leaked gas accumulates within the battery casing, and the concentration distribution of leaked gas within the battery casing can be monitored comprehensively.

[0009] In some embodiments, at least one monitoring unit is disposed in the tab sealing area of ​​the battery cell and is insulated from the tab of the battery cell.

[0010] In the technical solution of this application embodiment, the gas inside the battery casing usually leaks out through the tabs of the cell unit. By setting the monitoring unit in the tab sealing area of ​​the cell unit, it is possible to quickly detect whether there is a gas leak in the cell unit. When a gas leak occurs in the cell unit, the abnormality can be detected immediately, increasing the user's reaction time when facing battery pack abnormalities and reducing the safety hazards caused by the leakage of harmful gases inside the battery pack.

[0011] In some embodiments, multiple monitoring units are provided between multiple battery cell units, and the multiple monitoring units are spaced apart.

[0012] In the technical solution of this application embodiment, by setting multiple monitoring units between multiple battery cells in the battery casing, and the multiple monitoring units are set at intervals, the flow of leaked gas in the battery casing can be monitored, and the concentration distribution of leaked gas in the battery casing can be monitored in all directions.

[0013] In some embodiments, the main control circuit is further configured to acquire gas monitoring signals provided by multiple monitoring units and determine the health status of the battery cell based on the gas monitoring signals.

[0014] In the technical solution of this application embodiment, the main control circuit acquires gas monitoring signals collected by multiple monitoring units in real time, processes the collected data to obtain the leakage gas concentration information at each location, converts it into a quantified leakage concentration value, and determines the health status of the battery cell through a joint battery management system. If the leakage gas concentration at each monitoring point in the battery casing is consistent and below a threshold, the battery pack is considered safe. If the leakage gas concentration at any monitoring point in the battery casing changes abruptly, the user can be alerted. Alarm protection measures can also be set; if a critical threshold is reached, a warning will be issued to alert the user that the battery pack is at risk.

[0015] In some embodiments, the battery system further includes: The filter cartridge, located inside the battery casing, is used to adsorb hydrogen sulfide gas generated by the battery cell.

[0016] In the technical solution of this application embodiment, a filter box is installed inside the battery casing to adsorb hydrogen sulfide gas generated by the battery cell. Furthermore, the filter box can also be located at the air outlet of the battery casing, filling the entire air outlet. All gas flowing out of the battery casing must pass through the filter box for harmful gas filtration, reducing the concentration of emitted hydrogen sulfide gas and preventing harm to the driver.

[0017] In some embodiments, a monitoring unit is also provided inside the filter cartridge.

[0018] In the technical solution of this application embodiment, a monitoring unit is provided inside the filter cartridge to monitor the concentration of hydrogen sulfide after adsorption by the activated carbon membrane.

[0019] In some embodiments, the filter cartridge is further provided with an alkali-modified activated carbon membrane for absorbing hydrogen sulfide gas.

[0020] In the technical solution of this application embodiment, an alkali-modified activated carbon membrane (physical pore formation and chemical alkali addition) is provided inside the filter box. The filter box is used to absorb the generated hydrogen sulfide gas, reduce the concentration of emitted hydrogen sulfide gas, and avoid harm to the driver.

[0021] In some embodiments, the activated carbon membrane includes at least one basic group selected from sodium carboxylate, phenolic hydroxyl group, and lactone group.

[0022] In the technical solution of this application embodiment, the activated carbon membrane introduces groups such as sodium carboxylate (-COONa), phenolic hydroxyl (-ONa), lactone group, etc. These sites are active centers for chemical adsorption of acidic gases. Acidic gases (such as hydrogen sulfide gas, CO2) are more easily chemically adsorbed by alkaline surface, rather than simply physically adsorbed, which greatly improves adsorption capacity and selectivity.

[0023] In some embodiments, the activated carbon membrane includes a plurality of pore structures.

[0024] In the technical solution of this application embodiment, certain alkaline substances (such as KOH) in the activated carbon membrane react with carbon during the activation process, etching new micropores, increasing the specific surface area, and providing more channels and sites for adsorption.

[0025] A second aspect of this application also provides a vehicle, the vehicle including: a battery system as described in any of the above embodiments.

[0026] In the technical solution of this application embodiment, the vehicle includes a battery system, which includes a battery casing, multiple battery cell units, multiple monitoring units, and a main control circuit. The battery casing is used to house multiple battery cell units, and the multiple battery cell units are arranged in an array inside the battery casing. At least one monitoring unit is located in the area between the air inlet and the air outlet of the battery casing. The monitoring unit monitors the concentration of a specified gas inside the battery casing and generates a gas monitoring signal. When the gas monitoring signal is greater than the gas concentration threshold, the main control circuit generates an alarm signal to remind the user of the abnormality of the battery system. By pre-monitoring the harmful gases in the battery pack, the user's reaction time when facing battery pack abnormalities is increased. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of a first structure of a battery system provided in an embodiment of this application; Figure 2 This is a schematic diagram of a second structure of the battery system provided in an embodiment of this application; Figure 3 This is a schematic diagram of a third structure of the battery system provided in an embodiment of this application; Figure 4 This is a schematic diagram of a fourth structure of the battery system provided in an embodiment of this application. Detailed Implementation

[0028] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The phrase "second connection port" at various locations in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0032] In the description of the embodiments of this application, the term "multiple frames" refers to two or more (including two).

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0034] In related technologies, multiple sensors are required within the battery pack to monitor environmental and electrical parameters. However, these sensors are susceptible to interference from other gases, leading to inaccurate readings. For example, electrochemical sensors undergo redox reactions with gases, thus responding to various reducing gases (CO, SO2, H2, NOx). Some sensors use built-in chemical filters to block interfering gases, but these filters can become saturated, depleted, or fail due to environmental conditions such as high humidity. On the other hand, sensors exposed to certain substances (e.g., silicone compounds, lead, sulfur, etc.) can permanently decrease in sensitivity or become completely ineffective. Furthermore, some compounds that block active sites (such as silicone, commonly found in sealants and lubricants) can irreversibly adsorb onto the sensor's catalytic surface, preventing hydrogen sulfide gas from reacting with the sensing material. Long-term exposure to high concentrations of hydrogen sulfide can cause excessively rapid electrolyte depletion in electrochemical sensors or irreversible chemical changes in the sensing electrodes.

[0035] This application provides a battery system, see [link to relevant documentation]. Figure 1 As shown, the battery system in this embodiment includes: a battery casing 100, multiple battery cell units 210, multiple monitoring units 310, and a main control circuit 400. The battery casing 100 is used to house the multiple battery cell units 210 and the multiple monitoring units 310, and the multiple battery cell units 210 are arrayed within the battery casing 100. At least one monitoring unit 310 is disposed in the area between the air inlet and air outlet of the battery casing 100, and the monitoring unit 310 is used to monitor the concentration of a specified gas within the battery casing 100 and generate a gas monitoring signal. The main control circuit 400 is connected to the multiple monitoring units 310, and the main control circuit 400 is used to generate an alarm signal when the gas monitoring signal is greater than a gas concentration threshold.

[0036] In this embodiment, at least one monitoring unit 310 is provided in the area between the air inlet and the air outlet of the battery casing 100, and multiple battery cell units 210 are provided in the area between the air inlet and the air outlet of the battery casing 100. The monitoring unit 310 monitors the concentration of a specified gas in the battery casing 100 and generates a gas monitoring signal. When the gas monitoring signal is greater than the gas concentration threshold, the main control circuit 400 generates an alarm signal to remind the user of the abnormality of the battery system. By monitoring the harmful gas in the battery pack in real time, the user's reaction time when facing the abnormality of the battery pack is increased, and the safety hazards caused by the leakage of harmful gas in the battery pack are reduced.

[0037] In some embodiments, the battery housing 100 is used to house multiple battery cell units 210 and multiple monitoring units 310, which can form a battery module. The signals collected by the multiple monitoring units 310 can be aggregated to the main control circuit 400, thereby accurately locating the faulty battery cell and greatly simplifying after-sales maintenance and repair.

[0038] In some embodiments, combined with Figure 1 As shown, at least one monitoring unit 310 is disposed between adjacent cell units 210.

[0039] In this embodiment, the gas inside the battery casing 100 is usually leaked from inside the cell unit 210. By placing the monitoring unit 310 between adjacent cell units 210, it is possible to quickly detect whether there is gas leakage in the cell units 210 on both sides of the monitoring unit 310.

[0040] In some embodiments, the battery housing 100 includes a battery box 110 and a battery cover 120, which together form a sealed cavity structure.

[0041] In some embodiments, combined with Figure 2 As shown, at least one monitoring unit 310 is disposed in the bottom region of the battery casing 100 (e.g., Figure 2 (Bottom area ①-⑤).

[0042] In this embodiment, after the pouch cell is packaged, gas leakage is prone to occur at the connection between the tab and the aluminum-plastic film. If the cell experiences thermal runaway or damage, side reactions (generating hydrogen sulfide) are likely to occur. Since the density of the leaked gas is generally greater than that of air or nitrogen, the leaked gas will accumulate at lower positions within the pack. The monitoring unit 310 is located at the bottom of the battery casing 100 and can monitor the cumulative gas concentration of slowly leaking gas from the cell unit 210 within the battery casing 100, reducing the risk that the accumulated gas concentration within the battery casing 100 will reach a threshold due to slow gas leakage from the cell unit 210.

[0043] In some embodiments, combined with Figure 2 As shown, at least one monitoring unit 310 is disposed at the air outlet of the battery housing 100 (e.g., Figure 2 (⑦) of the sealing area.

[0044] In this embodiment, since all the gas in the battery casing 100 needs to be discharged through the air outlet, by setting the monitoring unit 310 at the air outlet of the battery casing 100, the gas concentration leaked by all the battery cell units 210 in the battery casing 100 can be monitored in a summary manner, avoiding the risk that the total gas concentration will reach the threshold when multiple battery cell units 210 leak gas.

[0045] In some embodiments, combined with Figure 2 As shown, at least one monitoring unit 310 is disposed at the air inlet of the battery housing 100 (e.g., Figure 2 (⑥) of the sealing area.

[0046] In this embodiment, in order to improve the detection accuracy of gas concentration inside the battery casing 100, a monitoring unit 310 is set at the air inlet of the battery casing 100. The main control circuit 400 can compare the gas monitoring signal generated by the monitoring unit 310 at the air inlet of the battery casing 100 with the gas monitoring signal at the air outlet of the battery casing 100, and correct the monitoring unit 310 according to the comparison result. It can also determine the change in gas concentration inside the battery casing 100 according to the comparison result.

[0047] In some embodiments, monitoring units 310 are arranged at the air inlet and air outlet of the battery casing 100 respectively to determine the gas source and gas production rate by the concentration gradient.

[0048] In some embodiments, combined with Figure 2 As shown, at least two monitoring units 310 are respectively disposed in two corner areas of the battery casing 100 (e.g., Figure 2 (⑤)

[0049] In this embodiment, by setting monitoring units 310 in at least two corner areas inside the battery housing 100, the flow of leaked gas inside the battery housing 100 can be monitored, and it can be determined whether the leaked gas accumulates inside the battery housing 100, thereby comprehensively monitoring the concentration distribution of leaked gas inside the battery housing 100.

[0050] In some embodiments, see Figure 3 As shown, at least one monitoring unit 310 is disposed in the tab sealing area 311 of the cell unit 210 and is mutually insulated from the tab of the cell unit 210.

[0051] In this embodiment, the gas inside the battery casing 100 usually leaks out through the tabs of the cell unit 210. By setting the monitoring unit 310 in the tab sealing area of ​​the cell unit 210, it is possible to quickly detect whether there is a gas leak in the cell unit 210. When a gas leak occurs in the cell unit 210, the abnormality can be detected immediately, increasing the user's reaction time when facing battery pack abnormalities and reducing the safety hazards caused by the leakage of harmful gases inside the battery pack.

[0052] In some embodiments, a plurality of monitoring units 310 are provided between a plurality of battery cell units 210, and the plurality of monitoring units 310 are spaced apart.

[0053] In this embodiment, by providing multiple monitoring units 310 between multiple cell units 210 within the battery casing 100, and by having the multiple monitoring units 310 spaced apart, the flow of leaked gas within the battery casing 100 can be monitored, and the concentration distribution of leaked gas within the battery casing 100 can be monitored in all directions.

[0054] In some embodiments, based on the arrangement of the pouch cells and the internal structure of the battery casing 100, a "distributed monitoring network" is adopted, in which multiple monitoring units 310 aggregate data to a main control circuit 400, thereby accurately locating the faulty cell and greatly simplifying after-sales maintenance and repair.

[0055] Each monitoring unit 310 includes at least one hydrogen sulfide sensor. The monitoring units 310 should be positioned between the tabs of the pouch cells and at the bottom of the battery pack system, and the wiring between the monitoring units 310 should cover the main area of ​​the battery system. Only then will the hydrogen sulfide concentration monitoring by the monitoring units 310 be representative. Furthermore, the monitoring units 310 should be positioned as close as possible to the battery casing 100, and at a certain distance from internal high-voltage connections, battery cells, and other structural components to prevent friction between the monitoring units 310 and other high-voltage components during vibration, which could lead to safety hazards. The monitoring units 310 also need to be securely connected to the battery cell unit 210 or the battery casing 100, ensuring a firm and reliable installation to prevent the monitoring units 310 from falling off.

[0056] In some embodiments, the distance between the monitoring unit 310 and the charged component inside the battery casing 100 is related to the voltage of the charged component. The higher the voltage of the charged component, the greater the distance between the monitoring unit 310 and the charged component. Furthermore, the monitoring unit 310 and the charged component are wrapped with insulating material.

[0057] In some embodiments, the main control circuit 400 is further configured to acquire gas monitoring signals provided by multiple monitoring units 310 and determine the health status of the battery cell 210 based on the gas monitoring signals.

[0058] In this embodiment, the main control circuit 400 acquires gas monitoring signals collected by multiple monitoring units 310 in real time, processes the collected data to obtain the leakage gas concentration information at each location, converts it into a quantified leakage concentration value, and determines the health status of the cell unit 210 through a joint battery management system. If the leakage gas concentration at each monitoring point within the battery casing 100 is consistent and below a threshold, the battery pack is considered safe. If the leakage gas concentration at any monitoring point within the battery casing 100 changes abruptly, the user can be alerted. Alarm protection measures can also be set; if a critical threshold is reached, a warning will be issued to alert the user that the battery pack is at risk.

[0059] In some embodiments, see Figure 4 As shown, the battery system also includes a filter cartridge 510, which is disposed inside the battery housing 100 and is used to adsorb hydrogen sulfide gas generated by the battery cell unit 210.

[0060] In this embodiment, a filter box 510 is installed inside the battery casing 100 to adsorb hydrogen sulfide gas generated by the battery cell unit 210.

[0061] In some embodiments, a monitoring unit 310 is also provided inside the filter cartridge 510.

[0062] In this embodiment, a monitoring unit 310 is provided inside the filter cartridge 510. The monitoring unit 310 is used to monitor the concentration of hydrogen sulfide after adsorption by the activated carbon membrane. Furthermore, the filter cartridge 510 can also be located at the air outlet of the battery housing 100. By filling the entire air outlet with the filter cartridge 510, all gas flowing out of the battery housing 100 needs to be filtered for harmful gases by the filter cartridge 510, thereby reducing the concentration of emitted hydrogen sulfide gas and avoiding harm to the driver.

[0063] In some embodiments, the monitoring unit 310 may include a hydrogen sulfide sensor and an activated carbon filter box 510 developed by the battery housing 100 is installed at the air outlet. The activated carbon filter box 510 has a strong adsorption capacity for hydrogen sulfide. When hydrogen sulfide is generated, it can adsorb the hydrogen sulfide at the air outlet. The hydrogen sulfide sensor can also monitor the concentration of hydrogen sulfide before and after adsorption in real time to avoid endangering the driver's life safety.

[0064] In some embodiments, the gas concentration threshold can be a corresponding electrical signal representing a gas concentration of 100 ppm.

[0065] In some embodiments, the main control circuit 400 determines the health status of the battery cell unit 210 inside the battery casing 100 by acquiring gas monitoring signals provided by multiple monitoring units 310, and outputs gas concentration data after processing the gas monitoring signals. Taking hydrogen sulfide gas detected by the monitoring unit 310 as an example, when the concentration of hydrogen sulfide gas detected by each monitoring unit 310 is less than a preset gas concentration threshold, the main control circuit 400 does not output an alarm signal, but records the hydrogen sulfide gas concentration, outputs a hydrogen sulfide gas concentration curve, and summarizes the total hydrogen sulfide gas concentration.

[0066] When the cumulative concentration of hydrogen sulfide gas in the battery casing 100 exceeds a preset gas concentration threshold, the main control circuit 400 outputs an alarm signal. The filter cartridge 510 inside the battery casing 100 adsorbs the hydrogen sulfide, and the monitoring unit 310 at the air outlet of the battery casing 100 continuously monitors the concentration of hydrogen sulfide gas. If the monitoring unit 310 at the air outlet of the battery casing 100 detects that the cumulative concentration of hydrogen sulfide gas reaches the preset gas concentration threshold, the main control circuit 400 issues a secondary warning, reminding the user that the concentration of hydrogen sulfide gas leaking from the battery casing 100 is high and reminding the user to stay away.

[0067] In some embodiments, the filter cartridge 510 is further provided with an alkali-modified activated carbon membrane for absorbing hydrogen sulfide gas.

[0068] In this embodiment, the filter cartridge 510 contains an alkali-modified activated carbon membrane (physical pore formation and chemical alkali enrichment), which has extremely high permeability (fast gas passage speed), good mechanical strength and chemical stability, and relatively low manufacturing cost. The filter cartridge 510 is used to absorb the generated hydrogen sulfide gas, reduce the concentration of emitted hydrogen sulfide gas, and avoid harm to the driver.

[0069] In some embodiments, the activated carbon membrane inside the filter cartridge 510 can be a composite membrane design. A modified zeolite-activated carbon substrate composite membrane is installed inside the filter cartridge 510, which ensures the adsorption capacity, high strength, and durability of the hydrogen sulfide adsorption membrane, while utilizing the high sensitivity and high adsorption capacity of modified zeolite to adsorb the generated hydrogen sulfide.

[0070] In some embodiments, the modified zeolite-activated carbon substrate composite membrane in this embodiment possesses highly regular and uniformly sized micropores (0.3-1.0 nm), exhibiting extremely high selectivity and serving as a perfect "precision sieve," capable of accurately distinguishing molecules with extremely small size differences. After passing through metal cations (such as Cu...) 2+ Modified zeolite can react more strongly with hydrogen sulfide gas to form metal sulfides, thereby efficiently capturing hydrogen sulfide gas.

[0071] In some embodiments, the activated carbon membrane inside the filter cartridge 510 can be made of impregnated activated carbon (common impregnating agents are alkalis such as KOH and NaOH, or oxidants such as KMnO4), which significantly improves the removal efficiency and sulfur capacity of H2S through chemical absorption. To improve the selectivity of the filter membrane, molecular sieves are introduced for fine sieving, and modified molecular sieves (as a coating) are dispersed on the surface of the activated carbon membrane to form a "composite matrix membrane".

[0072] In this embodiment, the molecular sieve particles in the composite matrix membrane provide precise channels, allowing gas molecules smaller than the molecular sieve pore size (such as H2O, H2) to pass through quickly, while larger molecules (such as CH4, N2) are blocked. For H2S (kinetic diameter approximately 3.6 Å), molecular sieves with specific pore sizes (such as 4A functionalized molecular sieves) can be selected to achieve efficient separation and adsorption.

[0073] Specifically, the preparation process of activated carbon membrane is as follows: The first step is to prepare modified molecular sieves: Molecular sieves with suitable pore size and surface properties (such as 4A modified molecular sieves) can be selected based on the target separation system (H2S removal, S dissolution). For example, sieves modified with metal cations (such as Cu) can be used. 2+Modified zeolite, this type of zeolite can react more strongly with H2S to form metal sulfides, thus efficiently capturing H2S.

[0074] Step 2: Preparation of activated carbon precursor: A solution of a high molecular weight polymer (such as polyimide PI) is usually used as the "ink" for film formation. After the solution coating is dried and the solvent is removed, the polymer film is carbonized and transformed into a porous activated carbon matrix membrane with high tensile strength.

[0075] Step 3: Preparation of modified zeolite dispersion solution: The modified zeolite is dispersed in a pre-prepared adhesive solution. After uniform dispersion, it is coated on the surface of a porous activated carbon matrix membrane. After coating, it is baked to finally prepare a high tensile strength activated carbon-modified zeolite composite membrane for efficient adsorption of H2S.

[0076] In some embodiments, the activated carbon membrane includes at least one basic group selected from sodium carboxylate, phenolic hydroxyl group, and lactone group.

[0077] In this embodiment, the activated carbon membrane is incorporating groups such as sodium carboxylate (-COONa), phenolic hydroxyl groups (-ONa), and lactone groups. These sites are active centers for the chemical adsorption of acidic gases. Acidic gases (such as hydrogen sulfide and CO2) are more easily chemically adsorbed by the alkaline surface, rather than simply physically adsorbed, which greatly improves the adsorption capacity and selectivity.

[0078] In some embodiments, the activated carbon membrane includes a plurality of pore structures.

[0079] In this embodiment, certain alkaline substances (such as KOH) in the activated carbon membrane react with carbon during the activation process, etching new micropores, increasing the specific surface area, and providing more channels and sites for adsorption.

[0080] In some embodiments, a fan is also provided inside the battery housing 100 to maintain a constant temperature and humidity environment inside the battery housing 100, thereby eliminating the interference of temperature and humidity on the sensitivity of the monitor.

[0081] This application also provides a vehicle, which includes a battery system as described in any of the above embodiments.

[0082] In this embodiment, the vehicle includes a battery system, which includes a battery housing 100, multiple battery cell units 210, multiple monitoring units 310, and a main control circuit 400. The battery housing 100 is used to house multiple battery cell units 210, and the multiple battery cell units 210 are arranged in an array within the battery housing 100. At least one monitoring unit 310 is located in the area between the air inlet and the air outlet of the battery housing 100. The monitoring unit 310 monitors the concentration of a specified gas within the battery housing 100 and generates a gas monitoring signal. When the gas monitoring signal exceeds a gas concentration threshold, the main control circuit 400 generates an alarm signal to alert the user to a battery system malfunction. By pre-monitoring harmful gases within the battery pack, the user's reaction time when facing battery pack malfunctions is increased.

[0083] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0085] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0086] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0087] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0088] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery system characterized by, The battery system includes: a battery casing, multiple battery cell units, multiple monitoring units, and a main control circuit; The battery housing is used to house multiple battery cell units and multiple monitoring units, and the array of multiple battery cell units is disposed within the battery housing; At least one of the monitoring units is disposed in the area between the air inlet and the air outlet of the battery casing, and the monitoring unit is used to monitor the concentration of a specified gas in the battery casing and generate a gas monitoring signal; The main control circuit is connected to multiple monitoring units, and the main control circuit is used to generate an alarm signal when the gas monitoring signal is greater than the gas concentration threshold.

2. The battery system of claim 1, wherein, At least one of the monitoring units is disposed between adjacent battery cells; and / or At least one of the monitoring units is disposed in the bottom region of the battery casing; and / or At least one of the monitoring units is disposed at the air outlet of the battery casing; and / or At least one of the monitoring units is disposed at the air inlet of the battery casing; and / or At least two of the monitoring units are respectively located in two corner areas of the battery casing.

3. The battery system of claim 1, wherein, At least one of the monitoring units is disposed in the tab sealing area of ​​the battery cell unit and is insulated from the tab of the battery cell unit.

4. The battery system of claim 3, wherein, At least one of the monitoring units is disposed in the area between the two tabs of the battery cell and is insulated from the tabs of the battery cell.

5. The battery system of claim 1, wherein, Multiple monitoring units are provided between multiple battery cell units, and the multiple monitoring units are arranged at intervals.

6. The battery system of any one of claims 1-5, wherein, The main control circuit is also used to acquire gas monitoring signals provided by multiple monitoring units and determine the health status of the battery cell based on the gas monitoring signals.

7. The battery system of any one of claims 1-5, wherein, The battery system also includes: A filter cartridge, located inside the battery casing, is used to adsorb hydrogen sulfide gas generated by the battery cell.

8. The battery system of claim 7, wherein, The monitoring unit is also installed inside the filter cartridge.

9. The battery system of claim 7, wherein, The filter cartridge is also equipped with an alkali-modified activated carbon membrane for absorbing hydrogen sulfide gas.

10. The battery system of claim 9, wherein, The activated carbon membrane includes at least one basic group selected from sodium carboxylate, phenolic hydroxyl group, and lactone group.

11. The battery system of claim 9, wherein, The activated carbon membrane includes several pore structures.

12. A vehicle characterized by comprising: The vehicle includes: a battery system as described in any one of claims 1 to 11.

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