Humidity control modules, battery modules, battery boxes, and power tool kits.

Abstract

DEPCT66 This request discloses the humidity control module, battery module, battery box, and tool kit. The electric humidity control module includes a humidity control layer configured to absorb or release vapor. Water, the primary permeable layer, is arranged in a stacked manner on the surface of the humidity control layer. The primary permeable layer that allows water vapor to pass through while preventing the passage of water. In a liquid state, a second, gas-permeable layer is arranged in a stacked manner on the surface of the gaseous layer. The first permeable layer faces away from the humidity control layer, and the second gas permeable layer has the capability. To allow liquid steam and water to pass through, and an adhesive layer is arranged on the side of the control layer. Moisture facing away from the first permeable layer and configured to hold the control layer. The first and second permeable layers of moisture are integrated with the carrier;

Description

Humidity control module, battery module, battery box and electrical device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202122506161.6, filed on October 18, 2021, entitled “Humidification Control Module, Battery Module, Battery Box and Electrical Device,” and the entire contents of that application are incorporated herein by reference. Technical Field

[0003] The embodiments of the present application belong to the field of battery technology, and in particular relate to a humidity control module, a battery module, a battery box, and an electrical device. Background Art

[0004] As one of the core components of pure electric vehicles, the power battery contains numerous electrical components such as battery modules, copper busbars, relays, and BMS controllers. The presence of these electrical components places high demands on the air humidity inside the power battery box.

[0005] If the humidity inside the battery compartment is too high, it may cause the electrical components to rust over time, leading to a decrease in battery performance. More seriously, water vapor in the air can condense into liquid water on the surface of the electrical components, causing short circuits within the battery and corrosion of some metal components, resulting in the battery losing its normal function and even posing a safety risk.

[0006] Currently, the industry primarily uses complex drying devices or dehumidification systems to dehumidify battery boxes. While these methods achieve a certain degree of dehumidification and remove water vapor, they are complex and require regular maintenance and replacement. Furthermore, the battery modules and other electrical components within the battery box require a suitable humidity environment, but these methods cannot effectively control the humidity within the battery box.

[0007] Summary of the Invention

[0008] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a humidity control module, a battery module, a battery box, and an electrical device that can automatically absorb water vapor from the battery box or release water vapor into the battery box, effectively regulating the humidity within the battery box, preventing short circuits within the battery box and corrosion of metal electrical components by liquid water, thereby ensuring the structural and performance stability of the electrical components within the battery box.

[0009] In a first aspect, the present application provides a humidity control module, comprising:

[0010] Humidity-regulating layer, used to absorb or release water vapor;

[0011] a first breathable layer laminated on a surface of the humidity-controlling layer, the first breathable layer allowing water vapor to pass through but preventing liquid water from passing through;

[0012] a second breathable layer laminated on a surface of the first breathable layer facing away from the humidity-controlling layer, the second breathable layer being permeable to water vapor and liquid water;

[0013] The fixing layer is provided on a side of the humidity-controlling layer away from the first breathable layer, and is used to fix the humidity-controlling layer, the first breathable layer and the second breathable layer to a carrier.

[0014] The humidity control module according to the embodiment of the first aspect of the present application has at least the following beneficial effects:

[0015] When the humidity control module of the present application is in use, the humidity control module can be fixed as a whole to the outer surface of the battery module or the inner wall of the battery box through the fixing layer. When the humidity in the battery box is high and the temperature is low, the water vapor in the battery box will pass through the second air permeable layer and the first air permeable layer on the humidity control module in sequence through its own diffusion effect, and then contact the humidity control layer and be absorbed by the humidity control layer, thereby reducing the humidity in the battery box and preventing a large amount of water vapor in the battery box from condensing into liquid water due to the low temperature, which may cause a short circuit in the circuit inside the battery box, corrosion of the battery module and other metal electrical components, and ensuring the stability of the structure and performance of the electrical components in the battery box. When the humidity in the battery box is low and the temperature is high, the moisture on the humidity control layer will absorb the heat in the battery box and evaporate into water vapor. The water vapor will then pass through the first air permeable layer and the second air permeable layer in sequence and diffuse into the internal space of the battery box, increasing the humidity in the battery box to a certain extent, and also having the effect of reducing the temperature inside the battery box. This humidity control module, by configuring the first air-permeable layer to allow water vapor to pass through and preventing liquid water from passing through, can prevent a small amount of liquid water in the battery box from directly contacting the humidity control layer and affecting the normal function of the humidity control layer. In addition, this humidity control module, by designing the second air-permeable layer to allow water vapor and liquid water to pass through, when the humidity in the battery box is high and the temperature is low, the water vapor remaining on the humidity control layer will diffuse through the first air-permeable layer, and then condense into liquid water on the inner surface of the second air-permeable layer and be absorbed by the second air-permeable layer. This not only prevents the water vapor remaining inside the humidity control module from entering the battery box, but also prevents liquid water from flowing on the inner and outer surfaces of the second air-permeable layer, ensuring that the water vapor in the battery box can be efficiently absorbed by the humidity control layer, but also reduces the probability of water vapor condensing on electrical components. The humidity control module of the present application has a simple and ingenious structure. Through the cooperation of the humidity control layer, the first breathable layer and the second breathable layer, it can automatically absorb water vapor in the battery box or release water vapor into the battery box, effectively regulating the humidity in the battery box. At the same time, it also plays a role in regulating the temperature in the battery box to a certain extent. It has high reliability. Through the absorption and release of water vapor by the humidity control layer, the entire humidity control module also has the effect of recycling.

[0016] Some embodiments of the present application further include: an insulating isolation layer, laminated between the humidity-control layer and the fixing layer, the insulating isolation layer being used to prevent water vapor from passing through; wherein the fixing layer is used to fix the insulating isolation layer, the humidity-control layer, the first breathable layer, and the second breathable layer to a carrier. The provision of the insulating isolation layer can provide insulation protection, preventing water vapor or liquid water in the humidity-control layer from directly contacting electrical components in the battery box, preventing the humidity-control layer from directly contacting the electrical components in the battery box and causing a short circuit in the electrical components, and also preventing water vapor or liquid water in the humidity-control layer from directly contacting the fixing layer and affecting the fixing function of the fixing layer.

[0017] In some embodiments of the present application, the insulating isolation layer covers the humidity-conditioning layer in its perpendicular projection relative to the plane where the humidity-conditioning layer lies. This allows the insulating isolation layer to completely cover the humidity-conditioning layer, thereby completely isolating the moisture vapor or liquid water within the humidity-conditioning layer and ensuring that the fixed layer and the electrical components within the battery box remain dry.

[0018] In some embodiments of the present application, the insulating isolation layer is an aluminum-plastic film layer. Due to the strong barrier and moisture-proof properties of the aluminum-plastic film, the insulating isolation layer can effectively prevent water vapor or liquid water in the humidity-conditioning layer from directly contacting the electrical components in the battery box. Due to the strong insulation properties of the aluminum-plastic film, the insulating isolation layer can effectively prevent the humidity-conditioning layer from directly contacting the electrical components in the battery box, thereby preventing short circuits in the electrical components.

[0019] In some embodiments of the present application, the first breathable layer and the fixed layer are connected as one body through a hemming process, and the humidity control layer is arranged in the accommodation space enclosed by the first breathable layer and the fixed layer. By placing the humidity control layer between the first breathable layer and the fixed layer, it is possible to prevent water vapor or liquid water in the battery box from directly contacting the humidity control layer, and to place the humidity control layer in a space with relatively stable humidity, thereby maintaining the function of the humidity control layer to absorb or release water vapor in a relatively stable state, thereby making it easier to maintain the environment in the battery box in a relatively stable equilibrium state. In addition, it can also increase the service life of the humidity control layer and the entire humidity control module.

[0020] In some embodiments of the present application, the vertical projection of the first breathable layer relative to the plane on which the humidity-controlling layer lies covers the humidity-controlling layer. This design allows the first breathable layer to completely cover the humidity-controlling layer, thereby completely blocking the path for liquid water to enter the humidity-controlling layer and ensuring the normal function of the humidity-controlling layer.

[0021] In some embodiments of the present application, the perpendicular projection of the first breathable layer relative to the plane on which the second breathable layer lies overlaps the second breathable layer. This design increases the contact area between the first and second breathable layers, allowing the first breathable layer to overlap the second breathable layer. This ensures that all water vapor within the battery case must first pass through the second and first breathable layers before coming into contact with and being absorbed by the humidity-conditioning layer. Furthermore, the first breathable layer completely blocks liquid water from the second breathable layer, further ensuring the proper function of the humidity-conditioning layer.

[0022] In some embodiments of the present application, the first breathable layer is a non-woven membrane or an expanded polytetrafluoroethylene membrane. Both non-woven membranes and expanded polytetrafluoroethylene membranes have high strength and breathability, ensuring that small volumes of water vapor can efficiently pass through the first breathable layer and be absorbed by the humidity-control layer.

[0023] In a second aspect, the present application provides a battery module, comprising: a battery module body; and a humidity control module disposed on the outer surface of the battery module body, wherein the humidity control module is the humidity control module described above.

[0024] The battery module according to the second embodiment of the present application has at least the following beneficial effects:

[0025] Since the battery module is equipped with the above-mentioned humidity control module, when in use, the humidity control modules can be arranged at different positions on the outer surface of the battery module body, so that the humidity at different positions on the outer surface of the battery module can be adjusted, thereby preventing water vapor from condensing on the outer surface of the battery module and affecting the normal function of the battery module.

[0026] In a third aspect, the present application provides a battery box comprising: a box body; at least one battery module arranged in the box body; at least one humidity control module, the humidity control module being arranged on the inner wall of the box body and / or the outer surface of the battery module, and the humidity control module being the above-mentioned humidity control module.

[0027] The battery box according to the third embodiment of the present application has at least the following beneficial effects:

[0028] Since this battery box is equipped with the above-mentioned humidity control module, when in use, the humidity control modules can be arranged at different positions on the outer surface of the battery module and at different positions on the inner wall of the battery box, so that the humidity inside the entire box can be adjusted, thereby avoiding short circuits inside the box and corrosion of metal electrical components by liquid water, thereby ensuring the stability of the structure and performance of the battery modules and other electrical components in the battery box.

[0029] In a fourth aspect, the present application provides an electrical device comprising the above-mentioned battery module or battery box.

[0030] The electrical device according to the fourth embodiment of the present application has at least the following beneficial effects:

[0031] Since the electrical device includes the above-mentioned battery module or battery box, it also has the same technical effects as the above-mentioned battery module or battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] FIG1 is a schematic structural diagram of a humidity control module according to some embodiments of the present application;

[0034] FIG2 is a top view of a humidity control module according to some embodiments of the present application;

[0035] FIG3 is a schematic diagram of the structural decomposition of a humidity control module according to some embodiments of the present application;

[0036] FIG4 is a schematic structural diagram of a battery box according to some embodiments of the present application;

[0037] FIG5 is a schematic structural diagram of a battery module according to some embodiments of the present application;

[0038] FIG6 is another structural schematic diagram of a battery box according to some embodiments of the present application;

[0039] FIG7 is a schematic diagram of the structure of the battery box in FIG6;

[0040] FIG8 is a schematic structural diagram of an electrical device according to some embodiments of the present application.

[0041] In the drawings: humidity control module 100; humidity control layer 110; first air permeable layer 120; second air permeable layer 130; fixing layer 140; insulating isolation layer 150; battery module body 200; box 300; upper shell 310; lower shell 320; electrical device 400. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application embodiments can be implemented without the need for some of these specific details. The following description of the embodiments is merely for providing a better understanding of the present application by illustrating the examples of the present application.

[0043] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of this application.

[0044] In the description of the embodiments of this application, "several" means one or more, "many" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0045] In the description of the embodiments of the present application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technical personnel in the relevant technical field can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

[0047] Currently, power batteries, as a core component of pure electric vehicles, house numerous electrical components, including battery modules, copper busbars, relays, and BMS controllers. The presence of these components places high demands on the air humidity within the battery compartment. Excessive humidity within the battery compartment can cause rust to form within the components over time, degrading battery performance. In more serious cases, water vapor in the air can condense into liquid water on the surfaces of the components, causing short circuits within the battery and corrosion of certain metal components. This can lead to functional impairment and even safety risks.

[0048] Currently, the industry primarily uses complex drying devices or dehumidification systems to dehumidify battery boxes. While these methods achieve a certain degree of dehumidification and remove water vapor, they are complex and require regular maintenance and replacement. Furthermore, the battery modules and other electrical components within the battery box require a suitable humidity environment, making these methods ineffective in effectively controlling humidity within the battery box.

[0049] Referring to Figures 1, 2, 3, and 4, in order to solve the problem of the inability to properly regulate the humidity in the battery box in the prior art, the present application provides a humidity control module 100, which includes a humidity control layer 110, a first air permeable layer 120, a second air permeable layer 130, and a fixing layer 140. The humidity control layer 110 is used to absorb or release water vapor, the first air permeable layer 120 is laminated on one surface of the humidity control layer 110, and the first air permeable layer 120 allows water vapor to pass through and prevents liquid water from passing through, the second air permeable layer 130 is laminated on the surface of the first air permeable layer 120 facing away from the humidity control layer 110, and the second air permeable layer 130 allows water vapor and liquid water to pass through, and the fixing layer 140 is disposed on the side of the humidity control layer 110 facing away from the first air permeable layer 120, and the fixing layer 140 is used to fix the humidity control layer 110, the first air permeable layer 120, and the second air permeable layer 130 to a carrier.

[0050] In the technical solution of the present application, the carrier may be a battery cell or battery core, a battery module, a battery box body and other structures in the battery box. Of course, the carrier may also be other electrical boxes or electrical cabinets with electrical components or circuit structures, and the specific structure of the carrier is not limited.

[0051] It should be understood that the specific shape of humidity-conditioning layer 110 is not limited. Humidity-conditioning layer 110 is preferably in a block or sheet structure. The shape of humidity-conditioning layer 110 is also not limited and can be selected based on application requirements. Humidity-conditioning layer 110 contains a functional material capable of sensing and regulating the relative humidity of ambient air. This functional material can be acrylic resin and a highly absorbent polymer mixed within the acrylic resin. The two can form a highly absorbent polyester fiber material. The functional material within humidity-control layer 110 works as follows: The highly absorbent polymer forms a ternary bridged molecular chain within the acrylic resin. Due to the hydrophilic groups within the highly absorbent polymer, the functional material within humidity-control layer 110 readily absorbs water molecules from the ambient air. Once the water molecules enter the acrylic resin, the ionized groups on the acrylic resin molecular chains dissociate in the water. The electrostatic repulsion between the ions causes the polymer chains to stretch and swell, further drawing the water molecules into the acrylic resin, thus achieving the moisture-absorbing function of humidity-control layer 110. Once the water molecules enter the acrylic resin, the ion concentration difference between the internal and external solutions creates reverse osmotic pressure, making it easier for the water molecules to enter the acrylic resin. Therefore, the higher the relative humidity of the ambient air, the stronger the moisture-absorbing capacity of humidity-control layer 110. Conversely, when the relative humidity of the ambient air is low, the ion concentration difference between the internal and external solutions changes, causing the water molecules within the acrylic resin to be automatically released due to the osmotic pressure, thus achieving the moisture-releasing function of humidity-control layer 110.

[0052] Obviously, in the technical solution of the present application, the humidity-control layer 110 can realize energy-free humidity control inside the battery box without the need for an external power source.

[0053] In the technical solution of this application, the shapes and thicknesses of the first breathable layer 120, the second breathable layer 130, and the fixed layer 140 are not restricted. Optionally, to reduce the overall thickness and weight of the humidity control module, the combined thickness of the first and second breathable layers 120, 130 is controlled between 0.13 mm and 0.15 mm, and the thickness of the fixed layer 140 is controlled between 0.09 mm and 0.11 mm. Furthermore, to ensure sufficient ventilation of the first and second breathable layers 120, 130, the air permeability of the first and second breathable layers 120, 130 can be set at 2000 g / m² / 24h.

[0054] In the technical solution of the present application, the fixing layer 140 can be a highly sticky adhesive film, optionally double-sided tape, to stably secure the humidity-control layer 110, the first breathable layer 120, and the second breathable layer 130 to the carrier, preventing the entire humidity-control module from falling off the carrier. Of course, the fixing layer 140 can also be a snap or hook structure to stably secure the humidity-control layer 110, the first breathable layer 120, and the second breathable layer 130 to the carrier. The specific structure of the fixing layer 140 is not limited.

[0055] When the humidity control module of the present application is in use, the humidity control module 100 can be fixed as a whole to the outer surface of the battery module or the inner wall of the battery box through the fixing layer 140. When the humidity in the battery box is high and the temperature is low, the water vapor in the battery box will pass through the second air permeable layer 130 and the first air permeable layer 120 on the humidity control module in sequence through its own diffusion effect, and then contact the humidity control layer 110, and then be absorbed by the humidity control layer 110, thereby reducing the humidity in the battery box and preventing a large amount of water vapor in the battery box from condensing into liquid water due to the low temperature, causing a short circuit in the circuit inside the battery box, corrosion of the battery module and other metal electrical components, and ensuring the stability of the structure and performance of the electrical components in the battery box.

[0056] When the humidity in the battery box is low and the temperature is high, the moisture on the humidity regulating layer 110 will absorb the heat in the battery box and evaporate into water vapor. The water vapor then passes through the first breathable layer 120 and the second breathable layer 130 in sequence and diffuses into the internal space of the battery box, thereby increasing the humidity in the battery box to a certain extent and also having the effect of lowering the internal temperature of the battery box.

[0057] By configuring the first air-permeable layer 120 to allow water vapor to pass through but prevent liquid water from passing through, the humidity control module 100 prevents a small amount of liquid water within the battery compartment from directly contacting the humidity control layer 110 and affecting the normal function of the humidity control layer 110. Furthermore, by configuring the second air-permeable layer 130 to allow both water vapor and liquid water to pass through, the humidity control module 100 prevents water vapor remaining on the humidity control layer 110 from diffusing through the first air-permeable layer 120 and condensing into liquid water on the inner surface of the second air-permeable layer 130, where it is absorbed by the second air-permeable layer 130. This not only prevents water vapor remaining within the humidity control module from entering the battery compartment, but also prevents liquid water from flowing along the inner and outer surfaces of the second air-permeable layer 130, ensuring that water vapor within the battery compartment is efficiently absorbed by the humidity control layer 110 and reducing the probability of water vapor condensing on electrical components.

[0058] The humidity control module of the present application has a simple and ingenious structure. Through the cooperation of the humidity control layer 110, the first air permeable layer 120 and the second air permeable layer 130, it can automatically absorb water vapor in the battery box or release water vapor into the battery box, effectively regulating the humidity in the battery box. At the same time, it also has the effect of regulating the temperature in the battery box to a certain extent. It has high reliability. Through the absorption and release of water vapor by the humidity control layer 110, the entire humidity control module has the effect of recycling. The provision of the second air permeable layer 130 also effectively strengthens the structural strength of the entire humidity control module and protects the first air permeable layer 120, preventing external sharp objects from directly contacting the first air permeable layer 120 and damaging the first air permeable layer 120, affecting the normal function of the first air permeable layer 120, and ensuring the stability of the structure and function of the first air permeable layer 120.

[0059] Referring again to Figures 1 to 3, in some embodiments of the present application, the humidity control module 100 further includes an insulating isolation layer 150, which is stacked between the humidity control layer 110 and the fixed layer 140. The insulating isolation layer 150 is used to prevent water vapor from passing through; wherein the fixed layer 140 is used to fix the insulating isolation layer 150, the humidity control layer 110, the first breathable layer 120, and the second breathable layer 130 to the carrier. It should be understood that the insulating isolation layer 150, the humidity control layer 110, and the fixed layer 140 can all be selected as rectangular sheet structures, and the thickness of the four can be adaptively selected and adjusted according to actual use needs. In other embodiments, the structure of the insulating isolation layer 150 can be stably sandwiched between the fixed layer 140 and the humidity control layer 110, and its two opposite side surfaces are respectively in surface contact with the humidity control layer 110 and the fixed layer 140. It should be understood that the insulating isolation layer 150 has strong insulation and airtightness. The setting of the insulating isolation layer 150 can play an insulating and protective role, effectively preventing the water vapor or liquid water in the humidity control layer 110 from directly contacting the electrical components in the battery box, preventing the humidity control layer 110 from directly contacting the electrical components in the battery box and causing a short circuit on the electrical components, and also preventing the water vapor or liquid water in the humidity control layer 110 from directly contacting the fixed layer 140 and affecting the fixing function of the fixed layer 140.

[0060] In some embodiments of the present application, the insulating isolation layer 150 covers the humidity control layer 110 in a vertical projection relative to the plane where the humidity control layer 110 is located, so that the insulating isolation layer 150 can completely cover the humidity control layer 110, thereby completely isolating the water vapor or liquid water in the humidity control layer 110, ensuring that the fixed layer 140 and the electrical components in the battery box are in a dry state.

[0061] In some embodiments of the present application, the insulating isolation layer 150 is an aluminum-plastic film layer. Due to the strong barrier and moisture-proof properties of the aluminum-plastic film, the insulating isolation layer 150 can effectively prevent water vapor or liquid water in the humidity-control layer 110 from directly contacting the electrical components in the battery box. Due to the strong insulation properties of the aluminum-plastic film, the insulating isolation layer 150 can effectively prevent the humidity-control layer 110 from directly contacting the electrical components in the battery box and causing a short circuit in the electrical components. When the insulating isolation layer 150 is an aluminum-plastic film layer, the fixing layer 140 can be a double-sided adhesive layer. The high smoothness of the aluminum-plastic film allows the release film of the double-sided adhesive to be seamlessly bonded to the aluminum-plastic film, effectively preventing water vapor or liquid water in the humidity-control layer 110 from directly contacting the double-sided adhesive layer and affecting the normal adhesive function of the double-sided adhesive layer.

[0062] In some embodiments of the present application, the first breathable layer 120 and the fixed layer 140 are connected as one body through a hemming process, and the humidity-control layer 110 is disposed within the accommodation space enclosed by the first breathable layer 120 and the fixed layer 140. Placing the humidity-control layer 110 between the first breathable layer 120 and the fixed layer 140 prevents direct contact between the water vapor or liquid water in the battery box and the humidity-control layer 110, placing the humidity-control layer 110 in a space with relatively stable humidity. This allows the humidity-control layer 110 to maintain its ability to absorb or release water vapor in a relatively stable state, thereby making it easier to maintain a relatively stable equilibrium state within the battery box. Furthermore, this can improve the service life of the humidity-control layer 110 and the entire humidity-control module.

[0063] Of course, in other embodiments, the first breathable layer 120 and the second breathable layer 130 are both film layer structures and the two are laminated into an integral part through a hot pressing process. The first breathable layer 120 and the second breathable layer 130 of the integral part are connected to the insulating isolation layer 150 through a edging process to form an integral structure, and the humidity regulating layer 110 is sandwiched in the accommodating space formed by the first breathable layer 120 and the insulating isolation layer 150, so that the first breathable layer 120, the second breathable layer 130 and the insulating isolation layer 150 jointly cover the humidity regulating layer 110 to prevent liquid water in the external environment from contacting the humidity regulating layer 110 and affecting the normal moisture absorption and release functions of the humidity regulating layer 110.

[0064] Referring again to FIG. 3 , in some embodiments of the present application, the first breathable layer 120 covers the humidity-controlling layer 110 in its perpendicular projection relative to the plane where the humidity-controlling layer 110 lies. This design allows the first breathable layer 120 to completely cover the humidity-controlling layer 110, thereby completely blocking the path for liquid water to enter the humidity-controlling layer 110 and ensuring the normal function of the humidity-controlling layer 110.

[0065] Similarly, in some embodiments of the present application, the perpendicular projection of the first breathable layer 120 relative to the plane of the second breathable layer 130 covers the second breathable layer 130. This design increases the contact area between the first breathable layer 120 and the second breathable layer 130, allowing the first breathable layer 120 to overlap the second breathable layer 130. This ensures that all water vapor within the battery case must first pass through the second breathable layer 130 and the first breathable layer 120 before coming into contact with the humidity-conditioning layer 110 and being absorbed by the humidity-conditioning layer 100. Furthermore, the first breathable layer 120 completely blocks liquid water from the second breathable layer 130, further ensuring the normal function of the humidity-conditioning layer 100.

[0066] In some embodiments of the present application, the first breathable layer 120 is either a non-woven membrane or an expanded polytetrafluoroethylene membrane. It is understood that both non-woven membranes and expanded polytetrafluoroethylene membranes have high strength and air permeability, ensuring that small volumes of water vapor can efficiently pass through the first breathable layer 120 and be absorbed by the humidity-controlling layer 110. This allows the humidity-controlling layer 110 to efficiently release water vapor into the ambient air at low relative humidity, thereby effectively regulating the relative humidity of the ambient air. Of course, the first breathable layer 120 can also be other functional membranes that allow water vapor to pass through while preventing liquid water from passing through, and its specific structure is not limited.

[0067] 5 , the present application further provides a battery module, including a battery module body 200 and a humidity control module disposed on the outer surface of the battery module body 200 , wherein the humidity control module is the humidity control module described above.

[0068] It should be understood that the battery module body 200 can be square, cylindrical or other shapes. The battery module body 200 has a plurality of battery cells arranged vertically and horizontally inside. The shape of the battery cells is not limited and can be square, cylindrical or other shapes.

[0069] Since the battery module is equipped with the above-mentioned humidity control module 100, when in use, the humidity control module 100 can be arranged at different positions on the outer surface of the battery module body 200, so that the humidity at different positions on the outer surface of the battery module can be adjusted, thereby preventing water vapor from condensing on the outer surface of the battery module and affecting the normal function of the battery module, and preventing water vapor from condensing into liquid water on the outer surface of the battery module and flowing into the interior of the battery module and affecting the normal function of the battery cells.

[0070] Referring to Figures 4, 5, 6 and 7, the present application also provides a battery box, including a box body 300, at least one battery module arranged in the box body 300, and at least one humidity control module, the humidity control module is arranged on the inner wall of the box body and / or the outer surface of the battery module, and the humidity control module is the above-mentioned humidity control module.

[0071] Since the battery box is equipped with the above-mentioned humidity control module 100, when in use, the humidity control module 100 can be arranged at different positions on the outer surface of the battery module and at different positions on the inner wall of the battery box body 300, so that the humidity inside the entire box body can be adjusted, thereby avoiding short circuits inside the box body and corrosion of metal electrical components by liquid water, thereby ensuring the stability of the structure and performance of the battery modules and other electrical components in the battery box.

[0072] Specifically, in order to facilitate the inspection and replacement of the battery module, the box body 300 is composed of an upper shell 310 and a lower shell 320 that are detachably assembled. The upper shell 310 and the lower shell 320 are assembled to form a cavity for accommodating the battery module.

[0073] In addition, referring to FIG8 , the present application provides an electric device 400 including the aforementioned battery module or battery box. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, and the like. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0074] Since the electrical device includes the above-mentioned battery module or battery box, it also has the same technical effects as the above-mentioned battery module or battery box, that is, the humidity of the battery module or battery box on the electrical device can be effectively regulated by the humidity control module 100.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

DEPCT661. A humidity control module comprising humidity control layers configured to absorb or release water vapor. A primary permeable layer is stacked on the surface of the primary humidity control layer; this permeable layer allows water vapor to pass through and prevents the passage of liquid water. A second permeable layer is stacked on the surface of the primary permeable layer facing away from the primary humidity control layer; this permeable layer allows both water vapor and liquid water to pass through. An adhesive layer is arranged on the side of the humidity control layer facing away from the primary permeable layer and is configured to attach the humidity control layer, the primary permeable layer, and the second permeable layer to the carrier.2.

1. A humidity control module under Recusation 1, which includes an additional insulating isolation layer arranged in a stacked manner between the humidity control layer and the bonding layer. The insulating isolation layer is configured to prevent vapor penetration, and the bonding layer is configured to hold the insulating isolation layer, the humidity control layer, the primary permeable layer, and the secondary permeable layer to the carrier.

3. A humidity control module under Recusation 2, where the perpendicular extensions of the insulating isolation layer on the plane on which the humidity control layer is located enclose the humidity control layer.

4. A humidity control module under Recusation 2 or 3, where the insulating isolation layer is an aluminum plastic film.

5. Any one of the humidity control modules under Recusation 1 through 4, where the primary permeable layer and the bonding layer are entirely connected by an enclosure process, and the humidity control layer is arranged in a receiving area enclosed by the primary permeable layer and the bonding layer. 6.

7. A humidity control module under any of the claims 1 through 5 where a perpendicular extension of the first permeable layer to the plane on which the humidity control layer is located covers the second permeable layer.

8. A humidity control module under claim 6 where a perpendicular extension of the first permeable layer to the plane on which the second permeable layer is located covers the second permeable layer.

9. A humidity control module under any of the claims 1 through 7 where the first permeable layer is one of a non-woven fabric film or an expanded polytetrafluoroethylene film.

10. A battery module comprising a battery module and a humidity control module arranged on the outer surface of the battery module where the humidity control module is a humidity control module under any of the claims 1 through 8.A battery box incorporating at least one battery module arranged within the box and at least one humidity control module arranged on the inner wall of the box and / or the outer surface of the battery module where the humidity control module is a humidity control module as specified in any one of Claims 1 through 8; 11. An electrical kit incorporating a battery module as specified in Claim 9 or a battery box as specified in Claim 10;