Battery device, case assembly, and electric appliance

Abstract

The application discloses a battery device, a box assembly and a power utilization equipment, and relates to the technical field of batteries. The battery device comprises a box assembly and a battery monomer. The box assembly comprises a box body, a cover body, a moisture absorption component and a temperature sensor. The box body has an opening, and the side of the box body with the opening is provided with a first sealing interface. The cover body has a second sealing interface, the first sealing interface is sealingly connected with the second sealing interface, and the cover body covers the opening. The battery monomer is arranged in a cavity formed by the box body and the cover body. The moisture absorption component is arranged between the first sealing interface and the second sealing interface. The humidity sensor is connected with the moisture absorption component. The technical scheme can give an early warning in the early stage of sealing failure, so as to remind maintenance personnel to timely check and repair, reduce the risk of serious electrochemical corrosion caused by a large amount of water vapor entering the box body, and improve the safety and reliability of the battery device.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device, housing assembly, and electrical equipment. Background Technology

[0002] Battery enclosures typically consist of a top cover and a main body, which must be sealed together. However, in actual use, crevice corrosion easily occurs at the sealing interface between the top cover and the main body. Crevice corrosion gradually expands along the sealing interface, eventually leading to seal failure. This allows moisture to enter the enclosure, triggering more severe electrochemical corrosion. The corrosion at the sealing interface is often difficult to detect in a timely manner, usually only becoming apparent after complete seal failure, lacking effective online early warning systems. Utility Model Content

[0003] The main purpose of this application is to provide a battery device, housing assembly, and electrical equipment, which aims to improve the problem of the difficulty in timely detection of corrosion between the battery device's housing body and cover.

[0004] To achieve the above objectives, the battery device proposed in this application includes a housing assembly and a battery cell; the housing assembly includes a housing body, a cover, a moisture-absorbing component, and a temperature sensor; the housing body has an opening, and a first sealing interface is provided on the side of the housing body with the opening; the cover has a second sealing interface, and the first sealing interface and the second sealing interface are sealed together, and the cover closes the opening; the battery cell is disposed within a cavity formed by the housing body and the cover; the moisture-absorbing component is sandwiched between the first sealing interface and the second sealing interface; the humidity sensor is connected to the moisture-absorbing component.

[0005] This application's technical solution provides an opening in the casing of the battery assembly, facilitating the placement of individual battery cells within the casing. Closing the opening with a cover provides excellent protection for the battery cells. The casing has a first sealing interface on the side with the opening, and the cover has a second sealing interface. A moisture-absorbing component is positioned between the first and second sealing interfaces, connected to a humidity sensor. When moisture seeps between the first and second sealing interfaces, the moisture-absorbing component rapidly absorbs the moisture and changes the humidity. The humidity sensor detects this change and sends a signal, providing an early warning of seal failure. This alerts maintenance personnel to promptly inspect and repair the battery, reducing the risk of severe electrochemical corrosion caused by excessive moisture entering the casing assembly and improving the safety and reliability of the battery assembly.

[0006] In one embodiment of this application, the moisture-absorbing member is annular and is arranged circumferentially along the first sealing interface.

[0007] This configuration allows the moisture-absorbing component to continuously cover the entire circumference of the sealing area. Therefore, no matter where water vapor seeps into the sealing area from, it can be captured and adsorbed by the moisture-absorbing component. This reduces the adsorption blind zone and the monitoring blind zone, enabling comprehensive monitoring and early warning of water vapor and improving the reliability of early warning of the sealing performance between the first and second sealing interfaces.

[0008] In one embodiment of this application, at least two moisture-absorbing members are provided at intervals along the direction from the outer edge of the first sealing interface to the inner edge of the first sealing interface, and at least two of the moisture-absorbing members are connected to the humidity sensor.

[0009] This setup creates at least two lines of defense for monitoring, enabling not only early warning but also preliminary assessment of the degree and location of seal failure by comparing humidity data from multiple moisture-absorbing components. It also allows for the calculation of corrosion propagation rates, providing maintenance personnel with more accurate decision-making support.

[0010] In one embodiment of this application, the distance from at least one of the moisture-absorbing members to the inner edge of the first sealing interface is less than the distance from the moisture-absorbing member to the outer edge of the first sealing interface.

[0011] This setup allows for an alarm to be triggered before moisture actually enters the enclosure components, reducing premature alarms and thus minimizing the need for frequent battery replacements or repairs.

[0012] In one embodiment of this application, the distance from the moisture-absorbing member to the inner edge of the first sealing interface is L, where L is not less than 2 mm.

[0013] This configuration ensures that the moisture-absorbing components are within a sufficiently safe range to absorb moisture, and that the humidity sensor can detect and issue an early warning in a timely manner, thereby reducing the risk of moisture entering the interior of the enclosure components.

[0014] In one embodiment of this application, a sealing gasket is further sandwiched between the first sealing interface and the second sealing interface; the moisture-absorbing member is provided between the sealing gasket and the first sealing interface, and / or the moisture-absorbing member is provided between the sealing gasket and the second sealing interface.

[0015] By setting a sealing gasket between the first sealing interface and the second sealing interface, the elastic deformation of the sealing gasket can make it press tightly against both the first and second sealing interfaces, thereby improving the sealing performance between the first and second sealing interfaces.

[0016] By placing the moisture-absorbing component between the sealing gasket and the first sealing interface, the component can absorb moisture in the area between the gasket and the first sealing interface, thus providing an early warning of corrosion at the first sealing interface. Similarly, by placing the moisture-absorbing component between the sealing gasket and the second sealing interface, the component can absorb moisture in the area between the gasket and the second sealing interface, thus providing an early warning of corrosion at the second sealing interface.

[0017] In addition, the elastic recovery force of the sealing gasket can also press the moisture-absorbing component tightly against the first sealing interface and / or the second sealing interface, thereby improving the moisture-absorbing component's adsorption effect on the first sealing interface and / or the second sealing interface, thus improving the sensitivity and response speed of humidity detection.

[0018] In one embodiment of this application, the moisture-absorbing component includes at least one of a moisture-absorbing core, a moisture-absorbing coating, and a moisture-absorbing film.

[0019] This design facilitates the replacement or recoating of the moisture-absorbing components, reducing the replacement cost of the moisture-absorbing components.

[0020] In one embodiment of this application, the cover and / or the box body are provided with a first groove, and the moisture-absorbing member is disposed in the first groove.

[0021] This setting effectively limits the moisture-absorbing component, reducing the risk of displacement during assembly or use, thereby improving the accuracy of the moisture-absorbing component being located at the preset monitoring position.

[0022] In one embodiment of this application, a sealing gasket is provided between the first sealing interface and the second sealing interface, and the moisture-absorbing member is provided between the sealing gasket and the first sealing interface and / or between the sealing gasket and the second sealing interface; the moisture-absorbing member includes at least one of a moisture-absorbing core, a moisture-absorbing coating, and a moisture-absorbing membrane; a second groove is provided on the sealing gasket, and the moisture-absorbing member is disposed in the second groove.

[0023] With this configuration, the elasticity of the sealing gasket itself allows the groove wall of the second groove to tightly wrap around the moisture-absorbing component, thereby achieving a good fixing effect on the moisture-absorbing component and pressing the moisture-absorbing component tightly against the opposite sealing interface, improving the reliability and response speed of corrosion detection.

[0024] In one embodiment of this application, the moisture-absorbing member includes a capillary channel disposed at at least one of the first sealing interface and the second sealing interface.

[0025] This configuration allows water vapor between the first and second sealing interfaces to be effectively collected by the capillary channel and conducted to the sensor, thereby achieving an early warning effect for water vapor corrosion between the first and second sealing interfaces.

[0026] In addition, this configuration can reduce the number of moisture-absorbing cores, moisture-absorbing coatings, or moisture-absorbing films, thereby reducing the number of parts and improving the assembly efficiency of the battery device; at the same time, it can also reduce the risk of moisture-absorbing components moving and improve the accuracy of early warning of corrosion conditions.

[0027] In one embodiment of this application, the battery device further includes an alarm device electrically connected to the humidity sensor.

[0028] This configuration allows the humidity signal detected by the humidity sensor to be transformed into more intuitive and clear alarm information, which can be clearly perceived by the user and reduce the risk of missing the warning signal.

[0029] In one embodiment of this application, the humidity sensor includes a main body and a sensing part. The main body is disposed in the cavity and is electrically connected to the alarm device. The sensing part is connected to the main body and is also connected to the moisture-absorbing component.

[0030] This configuration allows the sensing element to accurately detect the state of the moisture-absorbing component and transmit the humidity signal to the main body. The humidity sensor then calculates the current humidity of the moisture-absorbing component, providing an early warning of corrosion. Furthermore, by placing the main body within the cavity of the housing assembly, the humidity sensor is effectively protected, improving detection sensitivity and extending its lifespan.

[0031] This application also proposes a housing assembly for use in a battery device, the housing assembly comprising: The box body has an opening, and a first sealing interface is provided on the side of the box body with the opening; A cover having a second sealing interface, wherein the first sealing interface is sealed to the second sealing interface, and the cover closes the opening; A moisture-absorbing member, wherein the moisture-absorbing member is sandwiched between the first sealing interface and the second sealing interface; and A humidity sensor is connected to the moisture-absorbing component.

[0032] This application provides an opening in the casing body of the housing assembly, facilitating the placement of individual battery cells within the casing. Closing the opening with a cover provides excellent protection for the battery cells. The casing body has a first sealing interface on the side with the opening, and the cover has a second sealing interface. A moisture-absorbing component is positioned between the first and second sealing interfaces, connected to a humidity sensor. When moisture seeps between the first and second sealing interfaces, the moisture-absorbing component rapidly absorbs the moisture and changes the humidity. The humidity sensor detects this change and sends a signal, providing an early warning of seal failure. This alerts maintenance personnel to promptly inspect and repair the assembly, reducing the risk of severe electrochemical corrosion caused by excessive moisture entering the casing assembly.

[0033] This application also proposes an electrical device including the aforementioned battery device.

[0034] This application's technical solution provides an opening in the battery housing assembly of an electrical device, facilitating the placement of individual battery cells within the housing. Closing the opening with a cover provides excellent protection for the battery cells. The housing body has a first sealing interface on the side with the opening, and the cover has a second sealing interface. A moisture-absorbing component is positioned between the first and second sealing interfaces, connected to a humidity sensor. When moisture seeps between the first and second sealing interfaces, the moisture-absorbing component rapidly absorbs the moisture and changes the humidity. The humidity sensor detects this change and sends a signal, providing an early warning of potential seal failure. This alerts maintenance personnel to promptly inspect and repair the device, reducing the risk of severe electrochemical corrosion caused by excessive moisture entering the housing assembly. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application; Figure 2 This is an exploded view of the battery device according to some embodiments of this application; Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application; Figure 4This is a cross-sectional view of one embodiment of the battery device according to some embodiments of this application; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A top view of one embodiment of the battery device according to some embodiments of this application after removing the cover plate; Figure 7 for Figure 6 A magnified view of a section at point B in the middle; Figure 8 This is a cross-sectional view of another embodiment of the battery device in some embodiments of this application; Figure 9 for Figure 8 A magnified view of a section at point C; Figure 10 This is a partial cross-sectional view of yet another embodiment of the battery device in some embodiments of this application.

[0037] Explanation of icon numbers: 1000, vehicles; 100. Battery assembly; 200. Controller; 300. Motor; 10. Box assembly; 110. Box body; 111. First sealing interface; 120. Cover; 121. Second sealing interface; 130. Moisture-absorbing component; 131. Moisture-absorbing core; 132. Capillary channel; 140. Humidity sensor; 141. Main body; 142. Sensing part; 150. Sealing gasket; 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab.

[0038] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0043] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0044] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0045] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0046] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0047] Please refer to Figure 2 The battery device 100 includes a housing assembly 10 and battery cells 20, with the battery cells 20 housed within the housing assembly 10. The housing assembly 10 provides a receiving space for the battery cells 20, and can employ various structures. In some embodiments, the housing assembly 10 may include a first portion and a second portion, which overlap each other, jointly defining a receiving space for accommodating the battery cells 20. The second portion may be a hollow structure open at one end, while the first portion may be a plate-like structure, with the first portion covering the open side of the second portion so that the first and second portions jointly define the receiving space. Alternatively, both the first and second portions may be hollow structures open on one side, with the open side of the first portion covering the open side of the second portion. Of course, the housing assembly 10 formed by the first and second portions can be of various shapes, such as a cylinder, a cuboid, etc.

[0048] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0049] Please refer to Figure 3 , Figure 2 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0050] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0051] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0052] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals 21a to form a current loop.

[0053] In the battery device 100, there can be multiple battery cells 20. These multiple battery cells 20 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of these multiple battery cells 20 is housed within the housing assembly 10. (For further details, please refer to...) Figure 2 The battery device 100 can also be composed of multiple battery cells 20 connected in series, parallel or mixed to form a battery cell assembly, and then multiple battery cell assemblies connected in series, parallel or mixed to form a whole, which is housed in the housing assembly 10.

[0054] The housing assembly 10 of the battery device 100 typically consists of a cover and a housing body, which need to be sealed together. However, in actual use, crevice corrosion is prone to occur at the sealing interface between the cover and the housing body. Crevice corrosion gradually extends along the sealing interface, eventually leading to the failure of the seal between the housing body and the cover, allowing moisture to enter the housing and causing more severe electrochemical corrosion. The corrosion state of the sealing interface is usually difficult to detect in time, often only becoming apparent after the seal has completely failed, lacking effective online early warning mechanisms.

[0055] To address the issue of difficulty in timely detection of corrosion between the battery pack body and cover of the battery device 100, please refer to the following reference. Figures 4 to 7This application proposes a battery device 100, which includes a housing assembly 10 and a battery cell 20. The housing assembly 10 includes a housing body 110, a cover 120, a moisture-absorbing component 130, and a temperature sensor. The housing body 110 has an opening, and a first sealing interface 111 is provided on the side of the housing body 110 with the opening. The cover 120 has a second sealing interface 121, and the first sealing interface 111 and the second sealing interface 121 are sealed together, and the cover 120 closes the opening. The battery cell 20 is disposed in the cavity formed by the housing body 110 and the cover 120. The moisture-absorbing component 130 is sandwiched between the first sealing interface 111 and the second sealing interface 121. The humidity sensor 140 is connected to the moisture-absorbing component 130.

[0056] The housing body 110 is configured as the main component for accommodating the battery cell 20. The housing body 110 can be a cuboid, cube, or other shape, as long as it can accommodate the battery cell 20. To facilitate the placement of the battery cell 20 within the housing body 110, the housing body 110 has an opening. Taking a cuboid housing body 110 as an example, with the plate opposite the opening of the housing body 110 serving as the bottom plate, the housing body 110 may include a bottom plate and four side plates respectively surrounding the periphery of the bottom plate. The bottom plate and side plates together form an accommodating space for the battery cell 20. The side plates of the housing body 110 enclose the opening, and one end of the side plate forming the opening may have a flange to provide sufficient connection space with the cover 120. In this case, the flange and the top surface of the side plate of the housing assembly 10 together form a flat annular first sealing interface 111. Alternatively, the side plates of the housing body 110 may not have flanges; in this case, the top end face of the side plate forms the first sealing interface 111. The first sealing interface 111 is flat or serrated, etc.

[0057] The cover 120 can be a flat cover, with its surface facing the opening forming a second sealing interface 121 corresponding to the area of ​​the first sealing interface 111; the other areas can completely cover the opening of the box body 110. Alternatively, the cover 120 can also be a component with an opening on one side and a receiving space, as long as the cover 120 can cover the opening of the box body 110 and has a second sealing interface 121 that contacts and seals with the first sealing interface 111. The second sealing interface 121 can be flat or serrated, etc. When the first sealing interface 111 and the second sealing interface 121 are sealed together, the sealing effect can be achieved by sandwiching a sealing gasket 150 between the two sealing interfaces, or by applying sealant.

[0058] The moisture-absorbing component 130 refers to a component capable of absorbing moisture, which can be a moisture-absorbing core 131, a moisture-absorbing coating, a moisture-absorbing membrane, or a capillary channel 132, etc. When the moisture-absorbing component 130 is a moisture-absorbing core 131 or a moisture-absorbing membrane, the moisture-absorbing component 130 can be clamped between the first sealing interface 111 and the second sealing interface 121 by the clamping force between the first sealing interface 111 and the second sealing interface 121; or it can be disposed on the first sealing interface 111 and / or the second sealing interface 121 by means of adhesion, etc. The moisture-absorbing core 131 includes a porous molecular sieve, and its resistance and dielectric constant change significantly after absorbing water, thereby facilitating the capture of signals by the humidity sensor 140. The moisture-absorbing coating is a polymer water-absorbing resin coating applied to the first sealing interface 111 and / or the second sealing interface 121. The moisture-absorbing membrane refers to a highly absorbent and breathable polymer thin film structure. When the moisture-absorbing component 130 includes a capillary channel 132, the capillary channel 132 is disposed on the first sealing interface 111 and / or the second sealing interface 121. The moisture-absorbing component 130 can be segmented along the circumference of the first sealing interface 111 and between the first sealing interface 111 and the second sealing interface 121; or it can be an integral annular structure and disposed between the first sealing interface 111 and the second sealing interface 121.

[0059] The humidity sensor 140 may include capacitive humidity sensors, resistive humidity sensors, optical humidity sensors, etc. The measurement principles of these humidity sensors 140 are common knowledge in the art and will not be described in detail here. Taking a resistive humidity sensor 140 as an example, the humidity sensor 140 has a main body 141 and a sensing part 142. The main body 141 may include a signal acquisition chip, a signal transmission harness, etc., and can be electrically connected to the sensing part 142, and can also be electrically connected to some alarm devices or other electronic control devices. The main body 141 may be located inside or outside the housing assembly 10. The sensing part 142 refers to a component with a probe or a metal sensing contact, which can be fixed to the surface of the moisture-absorbing member 130 by bonding or other fixing methods. The sensing part 142 collects the humidity change signal after the moisture-absorbing member 130 absorbs water in real time.

[0060] When the seal between the enclosure body 110 and the cover is poor, moisture will enter the gap between the first sealing interface 111 of the enclosure body 110 and the second sealing interface 121 of the cover. The moisture-absorbing component 130 absorbs the moisture entering the gap, and the humidity sensor 140 can detect the amount of moisture absorbed by the moisture-absorbing component 130 in a timely manner. It can be set that when the amount of moisture absorbed by the moisture-absorbing component 130 reaches a preset threshold, the humidity sensor 140 transmits a signal to an alarm device, which reminds maintenance personnel to promptly address the seal between the cover 120 and the enclosure body 110 to reduce the risk of further moisture entering the enclosure assembly 10 and causing electrochemical corrosion. Alternatively, the humidity sensor 140 can be connected to a display device, allowing maintenance personnel to periodically observe the humidity signal on the display device and address the seal between the cover 120 and the enclosure assembly 10 accordingly.

[0061] The technical solution of this application provides an opening in the housing body 110 of the housing assembly 10 in the battery device 100, allowing the battery cell 20 to be placed inside the housing body 110 through the opening. By covering the opening with the cover 120, a good protective effect can be achieved for the battery cell 20. The housing body 110 has a first sealing interface 111 on the side with the opening, and the cover 120 has a second sealing interface 121. A moisture-absorbing component 130 is provided between the first sealing interface 111 and the second sealing interface 121. The moisture-absorbing component 130 is connected to a humidity sensor 140. When moisture seeps into the space between the first sealing interface 111 and the second sealing interface 121, the moisture-absorbing component 130 will quickly absorb the moisture and change the humidity. The humidity sensor 140 can then detect this change and send a signal, thereby achieving an early warning effect at the early stage of seal failure. This reminds maintenance personnel to perform timely inspection and repair, reducing the risk of severe electrochemical corrosion caused by a large amount of moisture entering the housing assembly 10, and improving the safety and reliability of the battery device 100.

[0062] Please refer to the reference. Figure 6 and Figure 7 In one embodiment of this application, the moisture-absorbing member 130 is annular and is arranged circumferentially along the first sealing interface 111.

[0063] The moisture-absorbing component 130 can be a ring-shaped rectangle, circle, or other polygonal shape. The shape of the moisture-absorbing component 130 can be the same as or different from the outer edge shape of the first sealing interface 111 or the second sealing interface 121.

[0064] By setting the moisture-absorbing component 130 as a ring structure, the moisture-absorbing component 130 can continuously cover the circumference of the entire sealing area. Therefore, no matter where water vapor seeps in from in the circumference of the sealing area, it can be captured and adsorbed by the moisture-absorbing component 130, thereby reducing the adsorption blind zone and the monitoring blind zone. This enables all-round monitoring and early warning of water vapor, improving the reliability of early warning of the sealing performance between the first sealing interface 111 and the second sealing interface 121.

[0065] Please refer to the reference. Figures 8 to 10 In one embodiment of this application, at least two moisture-absorbing members 130 are provided at intervals in the direction from the outer edge of the first sealing interface 111 to the inner edge of the first sealing interface 111, and at least two moisture-absorbing members 130 are connected to the humidity sensor 140.

[0066] Along the direction from the outer edge to the inner edge of the first sealing interface 111, two, three, four, or more moisture-absorbing components 130 may be provided at intervals. Each moisture-absorbing component 130 may be independently connected to a humidity sensor 140, meaning the number of moisture-absorbing components 130 and the number of humidity sensors 140 may be the same; or all moisture-absorbing components 130 may be connected to the same humidity sensor 140, as long as the humidity sensor 140 can detect the humidity of each moisture-absorbing component 130.

[0067] When corrosion begins between the first sealing interface 111 and the second sealing interface 121, the moisture-absorbing member 130 closest to the outer side of the housing assembly 10 first absorbs the moisture between the two interfaces, causing a change in humidity. The corresponding humidity sensor 140 senses this humidity change and sends a signal to the user. As corrosion continues to advance into the housing assembly 10, the second and third moisture-absorbing members 130, and so on, sequentially absorb the moisture between the two interfaces, causing the corresponding humidity sensor 140 to send a signal indicating a change in humidity in the respective member. When the moisture-absorbing member 130 closest to the outer edge of the first sealing interface 111 detects an increase in humidity, while the moisture-absorbing member 130 closest to the inner edge of the first sealing interface 111 maintains normal humidity, it can be determined that corrosion or leakage is gradually expanding from the outside of the housing assembly 10 towards the inside. If high humidity is detected in all moisture-absorbing components 130, it indicates that the seal failure is quite serious and the moisture has approached the cavity of the housing component 10.

[0068] This setup creates at least two lines of defense for monitoring, enabling not only early warning but also preliminary assessment of the degree and location of seal failure by comparing humidity data from multiple moisture-absorbing components 130, and calculation of corrosion propagation rate, thus providing maintenance personnel with more accurate decision-making support.

[0069] Please refer to the reference. Figure 4 and Figure 8 In one embodiment of this application, the distance from at least one moisture-absorbing member 130 to the inner edge of the first sealing interface 111 is less than the distance from the moisture-absorbing member 130 to the outer edge of the first sealing interface 111.

[0070] This configuration allows for an alarm to be triggered before moisture actually enters the housing assembly 10, while also reducing premature alarms and thus minimizing the need for frequent replacement or repair of the battery device 100.

[0071] like Figure 8 As shown, in one embodiment of this application, a sealing gasket 150 is further sandwiched between the first sealing interface 111 and the second sealing interface 121. A moisture-absorbing member 130 is provided between the sealing gasket 150 and the first sealing interface 111, and / or, a moisture-absorbing member 130 is provided between the sealing gasket 150 and the second sealing interface 121.

[0072] The sealing gasket 150 is made of an elastic polymer material, such as rubber or silicone. When the sealing gasket 150 is sandwiched between the first sealing interface 111 and the second sealing interface 121, it will deform under pressure, thereby filling the microscopic uneven areas between the interfaces and achieving a good sealing effect.

[0073] The moisture-absorbing component 130 may be provided only between the first sealing interface 111 and the sealing gasket 150, or the moisture-absorbing component 130 may be provided only between the second sealing interface 121 and the sealing gasket 150, or the moisture-absorbing component 130 may be provided between the sealing gasket 150 and the first sealing interface 111 and between the sealing gasket 150 and the second sealing interface 121.

[0074] The moisture-absorbing member 130 is disposed between the first sealing interface 111 and the sealing gasket 150, meaning that the moisture-absorbing member 130 can be sandwiched between the first sealing interface 111 and the sealing gasket 150, or the moisture-absorbing member 130 can be disposed on the first sealing interface 111 or the sealing gasket 150. Similarly, the moisture-absorbing member 130 is disposed between the second sealing interface 121 and the sealing gasket 150, meaning that the moisture-absorbing member 130 can be sandwiched between the second sealing interface 121 and the sealing gasket 150, or the moisture-absorbing member 130 can be disposed on the second sealing interface 121 or the sealing gasket 150.

[0075] By providing a sealing gasket 150 between the first sealing interface 111 and the second sealing interface 121, the sealing gasket 150 can be pressed tightly against both the first sealing interface 111 and the second sealing interface 121 through its elastic deformation, thereby improving the sealing performance between the first sealing interface 111 and the second sealing interface 121.

[0076] By placing the moisture-absorbing component 130 between the sealing gasket 150 and the first sealing interface 111, the moisture-absorbing component 130 can absorb moisture in the area between the sealing gasket 150 and the first sealing interface 111, thereby providing an early warning of corrosion of the first sealing interface 111. Similarly, by placing the moisture-absorbing component 130 between the sealing gasket 150 and the second sealing interface 121, the moisture-absorbing component 130 can absorb moisture in the area between the sealing gasket 150 and the second sealing interface 121, thereby providing an early warning of corrosion of the second sealing interface 121.

[0077] In addition, the elastic restoring force of the sealing gasket 150 can also press the moisture-absorbing member 130 tightly against the first sealing interface 111 and / or the second sealing interface 121, thereby improving the moisture adsorption effect of the moisture-absorbing member 130 on the first sealing interface 111 and / or the second sealing interface 121, and thus improving the sensitivity and response speed of humidity detection.

[0078] Please refer to the reference. Figure 5 and Figure 9 In one embodiment of this application, the distance from the moisture-absorbing member 130 to the inner edge of the first sealing interface 111 is L, and L is not less than 2 mm.

[0079] When there is only one moisture-absorbing component 130, the distance from the moisture-absorbing component 130 to the inner edge of the first sealing interface 111 is L; when there are at least two moisture-absorbing components 130, the distance L from the moisture-absorbing component 130 to the inner edge of the first sealing interface 111 is not less than 2mm, which means that at least the distance between the moisture-absorbing component 130 closest to the inner cavity of the housing assembly 10 and the inner edge of the first sealing interface 111 is not less than 2mm.

[0080] The distance L between the moisture-absorbing component 130 and the inner edge of the first sealing interface 111 can be 2mm, 3mm, 4mm, 5mm, etc. If the distance L between the moisture-absorbing component 130 and the inner edge of the sealing interface is less than 2mm, the moisture-absorbing component 130 is too close to the inner cavity of the housing assembly 10, which may cause pollution to the internal environment of the housing assembly 10 due to the shedding of small particles or the release of volatiles from the moisture-absorbing component 130 itself, and may also cause the risk of delayed corrosion warning.

[0081] By setting the distance L between the moisture-absorbing component 130 and the inner edge of the first sealing interface 111 to not less than 2mm, it can be ensured that the moisture-absorbing component 130 is within a sufficiently safe range to absorb water vapor and be detected and warned in time by the humidity sensor 140, thereby reducing the risk of water vapor entering the interior of the housing assembly 10.

[0082] Please refer to the reference. Figures 4 to 9 In one embodiment of this application, the moisture-absorbing member 130 includes at least one of a moisture-absorbing core 131, a moisture-absorbing coating, and a moisture-absorbing film.

[0083] The moisture-absorbing core 131 can be a porous fiber woven body, such as a strip woven from glass fiber, polyester fiber or polypropylene fiber, which has a large number of micron-sized pores inside, or a particulate matter with a large number of pores, or a sintered porous ceramic block, such as diatomaceous earth or zeolite sintered block, which can absorb and lock in moisture.

[0084] The moisture-absorbing coating may be a thin polymer layer containing a moisture absorbent, such as calcium chloride, silica gel, or sodium polyacrylate, formed on the first sealing interface 111 and / or the second sealing interface 121 by dip coating, spraying, or printing processes.

[0085] The moisture-absorbing membrane can be a self-formed thin film material, such as a polyimide membrane or a perfluorosulfonic acid ion membrane doped with moisture-absorbing fillers.

[0086] By including at least one of the moisture-absorbing component 130, the moisture-absorbing core 131, the moisture-absorbing coating, and the moisture-absorbing film, it is easy to replace or recoat the moisture-absorbing component 130, thus reducing the replacement cost of the moisture-absorbing component 130.

[0087] In one embodiment of this application, the cover 120 and / or the box body 110 are provided with a first groove, and the moisture-absorbing member 130 is disposed in the first groove.

[0088] The first groove can be directly formed on the second sealing interface 121 of the cover 120 by mechanical milling or casting, and / or the first groove can be directly formed on the first sealing interface 111 of the box body 110 by mechanical milling or casting. The cross-sectional shape of the first groove can be rectangular, trapezoidal or semi-circular, and its depth can be adapted to the thickness of the moisture-absorbing member 130, or less than the thickness of the moisture-absorbing member 130, so that the moisture-absorbing member 130 can fit tightly with the second sealing interface 121 or with the sealing gasket 150 provided on the first sealing interface 111 and the second sealing interface 121 after installation.

[0089] By embedding the moisture-absorbing component 130 into the first groove, the sidewall of the groove can be used to effectively limit the moisture-absorbing component 130, reducing the risk of displacement during assembly or use, thereby improving the accuracy of the moisture-absorbing component 130 in the preset monitoring position.

[0090] Please refer to the reference. Figures 4 to 10 In one embodiment of this application, a sealing gasket 150 is provided between the first sealing interface 111 and the second sealing interface 121, and a moisture-absorbing member 130 is provided between the sealing gasket 150 and the first sealing interface 111 and / or between the sealing gasket 150 and the second sealing interface 121; the moisture-absorbing member 130 includes at least one of a moisture-absorbing core 131, a moisture-absorbing coating, and a moisture-absorbing film; a second groove is provided on the sealing gasket 150, and the moisture-absorbing member 130 is disposed in the second groove.

[0091] The second groove is provided on at least one surface of the sealing gasket 150. For example, the second groove is provided on the side of the sealing gasket 150 facing the first sealing interface 111, or on the side of the sealing gasket 150 facing the second sealing interface 121, or the sealing gasket 150 has the second groove on both the side facing the first sealing interface 111 and the side facing the second sealing interface 121. The second groove can be integrally formed when the sealing gasket 150 is molded.

[0092] By embedding the moisture-absorbing component 130 into the second groove of the sealing gasket 150, the sealing gasket 150 and the moisture-absorbing component 130 form a combined assembly. During assembly, the moisture-absorbing component 130 can be first installed on the sealing gasket 150, and then the entire assembly can be placed between the first sealing interface 111 and the second sealing interface 121, simplifying the assembly process and improving production efficiency. Furthermore, the elasticity of the sealing gasket 150 allows the groove wall of the second groove to tightly wrap around the moisture-absorbing component 130, achieving a good fixing effect and pressing the moisture-absorbing component 130 firmly against the opposing sealing interface, thus improving the reliability and response speed of corrosion detection.

[0093] like Figure 10 As shown, in one embodiment of this application, the moisture-absorbing member 130 includes a capillary channel 132, which is disposed at least one of the first sealing interface 111 and the second sealing interface 121.

[0094] The capillary channel 132 is a microgroove structure formed on the surface of the second sealing interface 121 of the cover 120 and / or the first sealing interface 111 of the box body 110. The width of these grooves can be between tens of micrometers and hundreds of micrometers, and the depth can be around tens of micrometers. The capillary channel 132 can also be in the form of an integral ring or a ring formed by multiple segments. The capillary channel 132 utilizes the capillary action generated by the surface tension of the liquid to directionally absorb a very small amount of liquid water or high humidity water vapor at the corresponding sealing interface.

[0095] This configuration allows water vapor between the first sealing interface 111 and the second sealing interface 121 to be effectively collected by the capillary channel 132 and conducted to the sensor, thereby achieving an early warning effect for water vapor corrosion between the first sealing interface 111 and the second sealing interface 121.

[0096] In addition, this configuration can reduce the number of moisture-absorbing cores 131, moisture-absorbing coatings, or moisture-absorbing films, thereby reducing the number of parts and improving the assembly efficiency of the battery device 100; at the same time, it can also reduce the risk of movement of the moisture-absorbing component 130 and improve the accuracy of early warning of corrosion conditions.

[0097] In one embodiment of this application, the battery device 100 further includes an alarm device electrically connected to the humidity sensor 140.

[0098] The alarm device can be an audible and visual alarm module integrated into the humidity sensor 140, or it can be an audible and visual alarm module independent of the humidity sensor 140.

[0099] When the humidity sensor 140 detects that the humidity value of the moisture-absorbing component 130 exceeds a preset safety threshold, it sends a trigger signal to the alarm device. The alarm device then issues an alarm message that is easily perceived by the operator, such as a buzzer, flashing lights, or warning icons on the dashboard, or it can push a warning message to the user's mobile terminal via wireless communication methods such as Bluetooth or Wi-Fi.

[0100] This configuration allows the humidity signal detected by the humidity sensor 140 to be transformed into more intuitive and clear alarm information, which can be clearly perceived by the user and reduce the risk of missing the warning signal.

[0101] Please refer to the reference. Figure 5 and Figure 9 In one embodiment of this application, the humidity sensor 140 includes a main body 141 and a sensing part 142. The main body 141 is disposed in the cavity and is electrically connected to an alarm device. The sensing part 142 is connected to the main body 141 and is also connected to the moisture-absorbing member 130.

[0102] The main body 141 is the core unit of the humidity sensor 140, and it integrates signal processing circuits, analog-to-digital conversion modules, and communication interfaces. The main body 141 is located inside the cavity of the housing assembly 10, and the outer shell of the housing assembly 10 can provide good protection for it, reducing the impact of external moisture, dust, etc. on its internal components.

[0103] The sensing part 142 can be a conductive probe, a humidity-sensitive resistor, or a humidity-sensitive capacitor's moisture-sensing layer. The sensing part 142 is electrically connected to the main body 141 via a wire or conductive adhesive, and its sensing part can be tightly attached to the moisture-absorbing member 130 or embedded in the moisture-absorbing member 130.

[0104] With this configuration, the sensing unit 142 can accurately detect the state of the moisture-absorbing component 130 and transmit the humidity signal to the main body 141, so that the humidity sensor 140 can calculate the current humidity of the moisture-absorbing component 130 and thus provide early warning of corrosion. In addition, by placing the main body 141 inside the cavity of the housing assembly 10, a good protective effect can be achieved for the humidity sensor 140, improving the detection sensitivity and service life.

[0105] This application also proposes a housing assembly 10. This housing assembly 10 is applied to the aforementioned battery device 100. The specific structure of the housing assembly 10 refers to the embodiment of the housing assembly 10 in the aforementioned battery device 100, and therefore possesses at least all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, which will not be elaborated upon here. Specifically, the housing assembly 10 includes a housing body 110, a cover 120, a moisture-absorbing member 130, and a humidity sensor 140; the housing body 110 has an opening, and a first sealing interface 111 is provided on the side of the housing body 110 with the opening; the cover 120 has a second sealing interface 121, and the first sealing interface 111 and the second sealing interface 121 are sealed together, and the cover 120 closes the opening; the moisture-absorbing member 130 is sandwiched between the first sealing interface 111 and the second sealing interface 121; the humidity sensor 140 is connected to the moisture-absorbing member 130.

[0106] By providing an opening in the body 110 of the housing assembly 10, the battery cell 20 can be easily placed inside the housing body 110 through the opening. By covering the opening with the cover 120, a good protective effect can be achieved for the battery cell 20. The side of the housing body 110 with the opening has a first sealing interface 111, and the cover 120 has a second sealing interface 121. A moisture-absorbing member 130 is provided between the first sealing interface 111 and the second sealing interface 121. The moisture-absorbing member 130 is connected to a humidity sensor 140. When moisture seeps into the space between the first sealing interface 111 and the second sealing interface 121, the moisture-absorbing member 130 will quickly absorb the moisture and change the humidity. The humidity sensor 140 can then detect this change and send a signal, thereby achieving an early warning effect in the early stage of seal failure. This reminds maintenance personnel to perform timely inspection and repair, reducing the risk of severe electrochemical corrosion caused by a large amount of moisture entering the housing assembly 10.

[0107] Of course, the enclosure assembly 10 in this application can be used not only in the battery device 100, but also in other devices that require sealing, such as electrical switch cabinets or medicine boxes.

[0108] This application also proposes an electrical appliance. For example... Figure 1 As shown, the electrical device includes a battery device 100. The specific structure of the battery device 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. Specifically, the electrical device can be any of the aforementioned devices or systems that use the battery device 100.

[0109] The above are merely exemplary embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery device, characterized in that, It includes a housing assembly and individual battery cells; the housing assembly includes: The box body has an opening, and a first sealing interface is provided on the side of the box body with the opening; The cover has a second sealing interface, and the first sealing interface is sealed to the second sealing interface. The cover closes the opening. The battery cell is disposed in the cavity formed by the box body and the cover. A moisture-absorbing member, wherein the moisture-absorbing member is sandwiched between the first sealing interface and the second sealing interface; and A humidity sensor is connected to the moisture-absorbing component.

2. The battery device as claimed in claim 1, characterized in that, The moisture-absorbing component is annular and is arranged circumferentially along the first sealing interface; And / or, in the direction from the outer edge of the first sealing interface to the inner edge of the first sealing interface, at least two moisture-absorbing members are provided at intervals, and at least two of the moisture-absorbing members are connected to the humidity sensor.

3. The battery device as claimed in claim 1, characterized in that, The distance from at least one of the moisture-absorbing components to the inner edge of the first sealing interface is less than the distance from the moisture-absorbing component to the outer edge of the first sealing interface.

4. The battery device as claimed in claim 3, characterized in that, The distance from the moisture-absorbing component to the inner edge of the first sealing interface is L, and L is not less than 2mm.

5. The battery device as claimed in claim 1, characterized in that, A sealing gasket is also sandwiched between the first sealing interface and the second sealing interface; The moisture-absorbing member is provided between the sealing gasket and the first sealing interface, and / or the moisture-absorbing member is provided between the sealing gasket and the second sealing interface.

6. The battery device according to any one of claims 1 to 5, characterized in that, The moisture-absorbing component includes at least one of a moisture-absorbing core, a moisture-absorbing coating, and a moisture-absorbing membrane.

7. The battery device as claimed in claim 6, characterized in that, The first sealing interface and / or the second sealing interface are provided with a first groove, and the moisture-absorbing member is disposed in the first groove.

8. The battery device according to any one of claims 1 to 4, characterized in that, A sealing gasket is provided between the first sealing interface and the second sealing interface, and the moisture-absorbing member is provided between the sealing gasket and the first sealing interface and / or between the sealing gasket and the second sealing interface; the moisture-absorbing member includes at least one of a moisture-absorbing core, a moisture-absorbing coating, and a moisture-absorbing membrane; The sealing gasket has a second groove, and the moisture-absorbing component is disposed in the second groove.

9. The battery device according to any one of claims 1 to 5, characterized in that, The moisture-absorbing component includes a capillary channel, which is disposed at least one of the first sealing interface and the second sealing interface.

10. The battery device according to any one of claims 1 to 5, characterized in that, The battery device also includes an alarm device, which is electrically connected to the humidity sensor.

11. The battery device as claimed in claim 10, characterized in that, The humidity sensor includes: The main body is disposed within the cavity and is electrically connected to the alarm device; and The sensing part is connected to the main body and is also connected to the moisture-absorbing member.

12. A housing assembly, characterized in that, Applied to battery devices, the housing assembly includes: The box body has an opening, and a first sealing interface is provided on the side of the box body with the opening; A cover having a second sealing interface, wherein the first sealing interface is sealed to the second sealing interface, and the cover closes the opening; A moisture-absorbing member, wherein the moisture-absorbing member is sandwiched between the first sealing interface and the second sealing interface; and A humidity sensor is connected to the moisture-absorbing component.

13. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 11.

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