CN216710297U - Moisture absorption device, battery module, battery pack and electric device - Google Patents

Abstract

The application discloses moisture absorption device, battery module, battery package and electric installation. The moisture absorption device comprises a sleeve, a moisture absorption part and a base, wherein an accommodating cavity is arranged in the sleeve, and a plurality of air holes are formed in the sleeve; the moisture absorption part is arranged in the accommodating cavity; the base is mounted on the other end of the sleeve. Through the setting of moisture absorption part, the external steam of sleeve alright get into through the bleeder vent and hold the intracavity, absorb the steam by the moisture absorption part who holds the intracavity again, after moisture absorption part absorbs steam, the steam liquefaction becomes the comdenstion water after, can be with the comdenstion water separation holding the intracavity, can prevent to hold the comdenstion water of intracavity and pass through the bleeder vent and flow.

Description

Moisture absorption device, battery module, battery package and electric device

Technical Field

The application relates to the technical field of batteries, in particular to a moisture absorption device, a battery module, a battery pack and an electric device.

Background

In recent years, with the development of electric vehicles, the use of battery packs has become more widespread, and therefore, the requirements for safety performance of battery packs have become higher and more stringent, and the requirements for insulation inside battery packs have become stricter. In the process of charging and discharging the battery pack, condensed water is easily generated in the battery pack along with the change of the temperature in the battery pack, so that the insulation safety of the battery pack is threatened. Although the battery pack is subjected to sealing treatment at present, and the moisture absorbent is arranged in the battery pack to absorb water vapor in the battery pack, the moisture absorbent is easy to generate accumulated water after absorbing water saturation, so that the safety risk in the battery pack is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a moisture absorption device, battery module, battery package and power consumption device to overcome above-mentioned not enough, provide to solve the inside moisture absorbent of current battery package and absorb water saturation after, easily produce the problem of ponding.

In a first aspect, the application provides a moisture absorption device, which comprises a sleeve, a moisture absorption part and a base, wherein one end of the sleeve is provided with an inwards concave containing cavity, and the sleeve is provided with air holes; the moisture absorption part is arranged in the accommodating cavity; the base is arranged at the other end of the sleeve.

In the technical scheme of this application embodiment, under the setting of moisture absorption part, the intracavity is held in the entering of external steam accessible bleeder vent, absorb steam by the moisture absorption part who holds the intracavity again, after moisture absorption piece absorbs steam, after the steam liquefaction becomes the comdenstion water, can be holding the intracavity with the comdenstion water separation, can prevent to hold the comdenstion water of intracavity and pass through the bleeder vent and flow, simultaneously, set to dismantling between base and the sleeve, thereby conveniently dismantle the sleeve, so that take out the moisture absorption part and change.

In some embodiments, the plurality of air holes are arranged around the axis of the sleeve. The air holes are arranged to be a plurality of and arranged around the axis of the sleeve, so that external water vapor of the air holes can more uniformly pass through the air holes, and the moisture absorption component can be stably limited in the accommodating cavity.

In some embodiments, the absorbent member includes an absorbent mass disposed within the containment chamber and a waterproof breathable membrane disposed between the absorbent mass and the sleeve. The waterproof breathable film is arranged at the position, so that the waterproof breathable film can be conveniently and stably arranged on the air holes of the sleeve, and the waterproof breathable film is prevented from being separated from the air holes.

In some embodiments, the absorbent mass is adapted to the receiving cavity. The setting of absorbing the wet piece and holding chamber looks adaptation down can be full of with holding the chamber packing to it rocks to avoid absorbing the wet piece and take place to hold the intracavity, can guarantee the moisture absorption volume of absorbing the wet piece simultaneously.

In some embodiments, the waterproof, breathable membrane is secured within the containment chamber. Fix waterproof ventilated membrane in holding the intracavity, can prevent that waterproof ventilated membrane from breaking away from holding the chamber when dismantling the sleeve.

In some embodiments, the base is provided with a connector barrel at an end adjacent to the sleeve, and the sleeve is detachably secured to the connector barrel. The connecting cylinder is used for connecting the sleeve and the base.

In some embodiments, the connector barrel is threadably connected to the sleeve. Under the effect of the threaded connection of the connecting cylinder and the sleeve, the sleeve can be conveniently detached or installed on the connecting cylinder

In a second aspect, the present application provides a battery module including the moisture absorption device as in any of the above embodiments, the moisture absorption device being detachably mounted in the battery module.

Among the technical scheme of this application embodiment, install detachable moisture absorption device in battery module, alright absorb the drying to the inside steam of battery module, and can avoid the comdenstion water that forms behind the steam condensation to spill to the battery module in from moisture absorption device, thereby can avoid the secondary to get wet, install in battery module at moisture absorption device detachably simultaneously, can change the moisture absorption piece in the moisture absorption device when needs, pull down moisture absorption device, thereby the change to the moisture absorption piece is convenient.

In some embodiments, the end of the base away from the sleeve is provided with a connecting structure, and the connecting structure is detachably mounted in the battery module. The connecting structure is used for connecting the base and the battery module.

In some embodiments, the battery module comprises a frame, the frame is provided with an edge beam at an edge position, and the connecting structure is in threaded connection with the edge beam. The moisture absorption device is detachably arranged on the boundary beam in the frame, and the moisture absorption device can be arranged at the edge position of the frame, so that the utilization rate of the inner space of the frame is improved, and the waste of the inner space of the frame is avoided.

In a third aspect, the present application provides a battery pack including the battery module according to any one of the above embodiments.

In a fourth aspect, the present application provides an electric device, comprising the battery pack according to any of the above embodiments, wherein the battery pack is used for supplying electric energy.

Through adopting foretell technical scheme, the beneficial effect of this application is:

1. this application is under the setting of moisture absorption piece, and the external steam of sleeve alright gets into through the bleeder vent and holds the intracavity, again by the moisture absorption piece that holds the intracavity with the steam absorption, after moisture absorption piece absorbs steam, after the steam liquefaction becomes the comdenstion water, by the cooperation of waterproof ventilated membrane under, can be holding the intracavity with the comdenstion water separation, can prevent to hold the comdenstion water of intracavity and pass through the bleeder vent and flow.

2. This application is installed moisture absorption device in battery module, alright absorb the drying to the inside steam of battery module, and can avoid the comdenstion water that forms behind the steam condensation to spill to the battery module in from moisture absorption device to can avoid the secondary to get wet, install in battery module at moisture absorption device detachably simultaneously, can be when the moisture absorption piece in the moisture absorption device is changed to needs, detach moisture absorption device and treat the dehumidification thing, thereby the change to the moisture absorption piece is convenient.

3. This application sets up the battery module in the battery package, alright absorb the drying to the inside steam of battery package, and can avoid the comdenstion water that forms behind the steam condensation to spill to the battery package in from moisture absorption device to can avoid the secondary to get wet.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Clearly, such objects and other objects of the present application will become more apparent after a review of the following detailed description of the preferred embodiments as illustrated in the various figures and drawings.

These and other objects, features and advantages of the present application will become more apparent from the following detailed description of one or more preferred embodiments, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a powered device according to some embodiments of the present application;

fig. 2 is a partial structural view illustrating a battery module mounted with a moisture absorption device according to some embodiments of the present application;

FIG. 3 is a schematic perspective view of an absorbent device according to some embodiments of the present application;

FIG. 4 is a schematic view of an exploded view of an absorbent device according to some embodiments of the present application;

fig. 5 is a schematic cross-sectional view of an absorbent device according to some embodiments of the present application.

Description of reference numerals:

1. a sleeve; 11. an accommodating chamber; 12. air holes are formed;

2. an absorbent member; 21. a moisture-absorbing block; 22. a waterproof breathable film;

3. a base; 31. a connecting cylinder;

4. a connecting structure;

5. a battery module; 51. a frame; 52. a boundary beam;

6. a battery pack;

7. and (4) a power utilization device.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The battery pack in the power battery is a chargeable and dischargeable battery (rechargeable battery) which mainly depends on the movement of ions between a positive electrode and a negative electrode to work. In the charging and discharging process, because the liquid water can directly influence the safety risk of the battery pack, and the battery pack can be burnt out due to short circuit in severe cases, the insulation requirement on the battery pack is more and more strict.

At present in order to prevent that external steam from getting into the battery package, when the battery package is produced, can seal the processing to the battery package, but inside steam among the external environment still can get into the battery package, at the charge-discharge in-process of battery package, along with the change of the inside temperature of battery package, can produce the comdenstion water, threatens the safety of battery package.

In order to solve the problem that water in the battery pack is condensed into liquid water, a moisture absorbent can be arranged in the battery pack, when the moisture absorbent absorbs water and is saturated, accumulated water is easy to generate, and leakage of the accumulated water can cause insulation failure of the battery pack, so that the battery pack has potential safety hazards. Can also set up the comdenstion water in the bottom of battery package and collect to utilize the sensor to detect the water level, combine battery package management system to monitor and in time remind personnel to open the aqua storage tank and carry out the drainage, nevertheless when meetting special operating mode under, for example under the big impact condition, battery package bottom ponding flows back easily and causes the insulation failure in the battery package, brings the potential safety hazard, and this scheme structure is complicated, and the cost is higher, is difficult for using widely on a large scale.

Based on the above consideration, in order to solve the problem of the interior condensate water of battery package, and a moisture absorption device has been designed, through be equipped with the moisture absorption piece in the sleeve, telescopic one is served to run through there is the bleeder vent, and waterproof ventilated membrane in the society between bleeder vent and moisture absorption piece, when having steam in the battery package, steam can pass inside waterproof ventilated membrane gets into the sleeve through the bleeder vent, steam is just absorbed by the moisture absorption piece, when the excessive production ponding of the comdenstion water that absorbs the formation of steam as the moisture absorption piece, with the condensate water separation in the sleeve through waterproof ventilated membrane, thereby can prevent ponding external leakage, be connected through dismantling of sleeve and base simultaneously, can pull down the sleeve, change new moisture absorption piece, in order to guarantee moisture absorption device's moisture absorption effect. In the battery pack, the moisture absorption device can be arranged on the edge beam of the battery pack so as to reduce the space occupied by the moisture absorption device.

The moisture absorption device disclosed in the embodiment of the application can be used in battery devices such as battery cells, battery modules and battery packs, but not limited to battery devices, and can also be used in other equipment which needs to be kept dry. Can use the electrical power generating system who possesses constituteing electric installation such as moisture absorption device, battery module, battery package that this application is disclosed, like this, not only can keep the inside drying of battery package, can also prevent leaking of ponding to guarantee the safety of battery package.

The embodiment of the present application provides an electric device using a battery pack as a power source, the electric device may be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft, and the like, wherein the electric toy may include a stationary or mobile electric toy, such as a game machine, an electric automobile toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments are described by taking an electric device as an example of a vehicle according to some embodiments of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electric device 7 according to some embodiments of the present disclosure.

The electric device 7 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and other vehicles. The battery pack 6 is provided inside the power utilization device 7. The battery pack 6 may be used for power supply of the electric device 7, for example, the battery pack 6 may serve as an operation power source of the electric device 7. The power consumer 7 may also include a controller and a motor, the controller being used to control the battery pack 6 to power the motor, for example, for operational power requirements during start-up, navigation, and travel of the power consumer 7.

In some embodiments of the present application, the battery pack 6 may be used not only as an operation power source for the electric device 7, but also as a driving power source for the electric device 7, instead of or in part of fuel or natural gas, to provide driving power for the electric device 7.

Referring to fig. 2, fig. 2 is a partial structural view illustrating a battery module according to some embodiments of the present invention in which a moisture absorption device is mounted. The battery pack 6 includes a case and the battery module 5, and the battery module 5 is accommodated in the case. Wherein, the box is used for providing accommodation space for battery module 5, and the box can adopt multiple structure. In some embodiments, the case may include a first portion and a second portion that cover each other, and the first portion and the second portion together define a receiving space for receiving the battery pack 6. The second part can be a hollow structure with one open end, the first part can be a plate-shaped structure, and the first part covers the open side of the second part, so that the first part and the second part jointly define an accommodating space; the first part and the second part can be hollow structures with one side opened, and the opening side of the first part is covered on the opening side of the second part. Of course, the box formed by the first and second portions may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

The number of the battery modules 5 may be plural, and the plural battery modules 5 may be connected in series, in parallel, or in series-parallel, where the series-parallel means that the plural battery modules 5 are connected in series or in parallel. The plurality of battery modules 5 can be directly connected in series or in parallel or in series and parallel, and the whole formed by the plurality of battery modules 5 is accommodated in the box body; of course, the battery pack 6 may also be formed by connecting a plurality of battery modules 5 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case. The battery pack 6 may also include other structures, for example, the battery pack 6 may also include a bus member for achieving electrical connection between the plurality of battery modules 5.

Wherein each battery module 5 may be a lithium ion secondary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery module 5 may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes.

Referring to fig. 3-5, according to some embodiments of the present application, fig. 3 is a schematic perspective view of an absorbent device according to some embodiments of the present application; FIG. 4 is a schematic view of an exploded view of an absorbent device according to some embodiments of the present application; fig. 5 is a schematic cross-sectional view of an absorbent device according to some embodiments of the present application. The present application provides a moisture absorption apparatus. The moisture absorption device comprises a sleeve 1, a moisture absorption part 2 and a base 3, wherein one end of the sleeve 1 is provided with an inwards concave containing cavity 11, and the sleeve 1 is provided with an air hole 12; the moisture absorption part 2 is arranged in the accommodating cavity 11; the base 3 is mounted to the other end of the sleeve 1.

The sleeve 1 is of a hollow structure, one end of the sleeve is not completely communicated with the outside of the sleeve 1, so that the moisture absorption part 2 in the sleeve 1 is not exposed, the other end of the sleeve is completely communicated with the outside of the sleeve 1, so that the moisture absorption part 2 in the sleeve 1 can freely extend into and extend out, the hollow structure forms an accommodating cavity 11, and the accommodating cavity 11 is used for accommodating the moisture absorption part 2.

The air hole 12 is a hole penetrating through the end surface of one end of the sleeve 1, and the hole is communicated with the accommodating cavity 11, that is, substances such as water, air and the like can freely flow outside the sleeve 1 and in the accommodating cavity 11.

The moisture absorbing member 2 is a material that satisfies the ability to absorb moisture from the environment, and can achieve the moisture absorbing object of the present application.

The base 3 is used for supporting the sleeve 1 and can be used for blocking the accommodating cavity 11 in the sleeve 1, so that the absorbent part 2 in the accommodating cavity 11 is not exposed and the liquid in the absorbent part 2 does not leak outwards. In addition, the base 3 and the sleeve 1 may be connected in a fixed manner or in a detachable manner. For the fixed connection mode, the sealing performance between the base 3 and the sleeve 1 is good, and the phenomenon that liquid in the moisture absorption part 2 in the accommodating cavity 11 leaks outwards can be avoided; for the detachable connection mode, the moisture absorption part 2 in the sleeve 1 can be replaced conveniently, and the maintenance cost of the moisture absorption device is reduced.

Through moisture absorption part 2's setting, the outside steam accessible bleeder vent 12 of sleeve 1 gets into and holds in the chamber 11, absorb steam by the moisture absorption part 2 who holds in the chamber 11 again, after moisture absorption part 2 absorbs steam, after the steam liquefaction becomes the comdenstion water, can be with the comdenstion water separation in holding chamber 11, can prevent to hold the comdenstion water in the chamber 11 and pass through bleeder vent 12 and flow out, and simultaneously, can also set to dismantling between base 3 and the sleeve 1, thereby conveniently dismantle sleeve 1, so that take out moisture absorption part 2 and change.

According to some embodiments of the present application, optionally, the ventilation holes 12 are provided in a plurality, and the plurality of ventilation holes 12 are arranged around the axis of the sleeve 1. The plurality of air holes 12 are arranged around the axis of the sleeve 1, so that external water vapor can more uniformly pass through the air holes 12, and the moisture absorption component 2 can be stably limited in the accommodating cavity 11.

According to some embodiments of the present application, optionally, the absorbent part 2 comprises an absorbent block 21 and a waterproof breathable membrane 22, the absorbent block 21 is disposed within the accommodating chamber 11, and the waterproof breathable membrane 22 is disposed between the absorbent block 21 and the sleeve 1.

The moisture absorption block 21 is a substance that can achieve the moisture absorption purpose of the present application as long as it has a capacity of absorbing moisture from the environment, and the material thereof includes, but is not limited to, silica gel, or chlorine salts such as calcium chloride and magnesium chloride.

Wherein, the silica gel, also called silicon rubber, is a high-activity adsorption material, belongs to crystalline substance, and has chemical molecular formula of mSiO₂.nH₂O, insoluble in water and any solvent, non-toxic, odorless, stable in chemical property, and free from chemical reaction with any substance except strong alkali and hydrofluoric acid. The silica gel has a nano-scale microporous structure inside, and a large number of hydroxyl groups exist on the surface of the silica gel. Through the mutual attraction among molecules, the hydroxyl groups are compatible with water molecules in the air, so that the water absorption function is realized. Silica gel has an open porous structure, has extremely strong adsorbability, and can adsorb various substances.

Calcium chloride (CaCl)₂) Magnesium chloride (MgCl)₂) All have good water absorption performance, and the chemical reaction formula of the water absorption is CaCl₂+6H₂O＝CaCl₂·6H₂O and MgCl₂+6H₂O＝MgCl₂·6H₂O。

The waterproof breathable film 22 is a high-molecular waterproof material, and water particles are very fine in a water vapor state, and can smoothly permeate into a capillary to the other side according to the capillary movement principle, so that a breathable phenomenon is generated; after water vapor is condensed into water drops, the particles become large, and water molecules are mutually pulled to counterbalance under the action of the surface tension of the water drops, so that the water molecules can not smoothly separate from the water drops and permeate to the other side, namely, the permeation of water is prevented, and the breathable film has a waterproof function.

The waterproof breathable membrane 22 includes, but is not limited to, Polytetrafluoroethylene (PTFE). The polytetrafluoroethylene membrane has high water resistance due to the fact that the surface of the polytetrafluoroethylene membrane is water-repellent and has high water resistance, the water resistance of the polytetrafluoroethylene membrane is mainly based on the characteristics of low surface tension of the PTFE membrane and high water resistance of the composite membrane, liquid drops are not easy to adhere, wet or penetrate, and a small amount of liquid automatically slides down after being sprayed, so that the liquid drops cannot penetrate.

Through the arrangement of the waterproof breathable film 22, the waterproof breathable film 22 is conveniently and stably arranged on the air holes 12 of the sleeve 1, so that the waterproof breathable film 22 is prevented from being separated from the air holes 12.

According to some embodiments of the present application, the absorbent block 21 is optionally adapted to the receiving cavity 11.

The moisture absorption block 21 is matched with the accommodating cavity 11, namely the moisture absorption block 21 can be embedded into the accommodating cavity 11, and the outer wall of the moisture absorption block 21 is tightly attached to the inner wall of the accommodating cavity 11; in other words, the absorbent block 21 can be inserted into the accommodating chamber 11, and the absorbent block 21 fills the space of the accommodating chamber 11, so that the absorbent block 21 is not easily shaken in the accommodating chamber 11.

Under the setting of absorbing moisture piece 21 and holding chamber 11 looks adaptation, can be full of the chamber 11 packing that holds to avoid absorbing moisture piece 21 to take place to rock in holding chamber 11, can guarantee absorbing moisture piece 21's moisture absorption volume simultaneously.

According to some embodiments of the present application, optionally, a waterproof breathable membrane 22 is secured within the receiving cavity 11. Fix waterproof ventilated membrane 22 in holding chamber 11, can prevent when dismantling sleeve 1 that waterproof ventilated membrane 22 breaks away from holding chamber 11.

According to some embodiments of the present application, optionally, one end of the base 3 near the sleeve 1 is provided with a connecting cylinder 31, and the sleeve 1 is detachably fixed on the connecting cylinder 31. The connecting cylinder 31 is used for connecting the sleeve 1 and the base 3.

According to some embodiments of the present application, optionally, the connection barrel 31 is threadedly connected with the sleeve 1. The connecting cylinder 31 is in threaded connection with the sleeve 1, specifically, the connecting cylinder 31 is provided with an external thread, the sleeve 1 is provided with an internal thread, and the external thread is in threaded connection with the internal thread so as to realize the threaded connection between the connecting cylinder 31 and the sleeve 1; it can also be that the connecting cylinder 31 is last to have the internal thread, has the external screw thread on the sleeve 1, and rethread external screw thread and internal thread threaded connection to the realization is with connecting cylinder 31 and sleeve 1 threaded connection. The sleeve 1 can be conveniently detached or mounted on the connecting cylinder 31 under the effect of the threaded connection of the connecting cylinder 31 and the sleeve 1.

According to some embodiments of the present disclosure, please refer to fig. 2 and 5, fig. 2 is a schematic structural view of a portion of a battery module of some embodiments of the present disclosure, which is mounted with a moisture absorption device; fig. 5 is a schematic cross-sectional view of an absorbent device according to some embodiments of the present application. The present application provides a battery module including the moisture absorption device as in any of the above embodiments, the moisture absorption device being detachably mounted in the battery module 5.

Among the technical scheme of this application embodiment, install detachable moisture absorption device in battery module 5, alright absorb the drying to the inside steam of battery module 5, and can avoid the comdenstion water that forms behind the steam condensation to spill to battery module 5 in from moisture absorption device, thereby can avoid the secondary to get wet, install in battery module 5 at moisture absorption device detachably simultaneously, can change moisture absorption piece 21 in the moisture absorption device when needs, pull down moisture absorption device, thereby the change to moisture absorption piece 21 is convenient.

According to some embodiments of the present application, optionally, one end of the base 3 away from the sleeve 1 is provided with a connection structure 4, and the connection structure 4 is detachably installed in the battery module 5. The connecting structure 4 is used for connecting the base 3 and the battery module 5. Connection structure 4 is detachable, and is concrete, can be but not limited to have the external screw thread on connection structure 4, has the internal thread in battery module 5 or has the internal thread on connection structure 4, and the external screw thread passes through external screw thread and internal screw thread threaded connection in battery module 5, can realize connection structure 4's the function of dismantling.

According to some embodiments of the present application, optionally, the battery module 5 includes a frame 51, an edge position of the frame 51 is provided with an edge beam 52, and the connection structure 4 is screwed with the edge beam 52.

The frame 51 refers to a component in the battery module for accommodating the battery cell; the edge beam 52 refers to a shelf that supports the edge of the frame 51 at the edge position of the frame 51.

The frame 51 is provided with the edge beam 52, and the moisture absorbing device can be mounted at the edge of the frame 51, so that the utilization rate of the internal space of the frame 51 is improved, and the waste of the internal space of the frame 51 is avoided. Connecting structure 4's function of dismantling, it is specific, can be but not limited to have the external screw thread on connecting structure 4, have the internal thread hole on the boundary beam 52 or have the internal thread on connecting structure 4, have the external screw thread post on the boundary beam 52 and pass through external screw thread and internal screw thread threaded connection, can realize connecting structure 4's function of dismantling.

According to some embodiments of the present application, please refer to fig. 2, the present application provides a battery pack including a battery module 5 according to any of the above embodiments.

According to some embodiments of the present application, there is provided an electric device, including a battery pack 6 as in any of the above embodiments, wherein the battery pack 6 is used for providing electric energy.

According to some embodiments of the present application, referring to fig. 2-5, an absorbent device is provided. The moisture absorption device comprises a sleeve 1, a moisture absorption block 21 and a waterproof breathable film 22, wherein one end of the sleeve 1 is provided with an inwards concave containing cavity 11, and the sleeve 1 is provided with a plurality of air holes 12 penetrating through the containing cavity 11; the moisture absorption block 21 is embedded in the accommodating cavity 11; waterproof ventilated membrane 22 is located between moisture absorption piece 21 and bleeder vent 12, and the sleeve 1 corresponds the one end that holds chamber 11 and is fixed with base 3, passes through threaded connection between the one end of base 3 and the sleeve 1, and the other end of base 3 is fixed in on the boundary beam 52 of the frame 51 inward flange position in the battery package well box. In the process of moisture absorption, water vapor in the battery pack passes through the waterproof breathable film 22 through the air holes 12 and is absorbed by the moisture absorption block 21; and when the comdenstion water that absorbs piece 21 and absorb is too much and the ponding that produces, under waterproof ventilated membrane 22's effect, waterproof ventilated membrane 22 can be with the comdenstion water separation in the chamber 11 that holds of sleeve 1, makes the frame 51 of the unable battery package that flows through bleeder vent 12 of comdenstion water to can guarantee the drying of battery package, avoid ponding to threaten the insulating risk of battery package. When the moisture absorption block 21 needs to be replaced, the base 3 can be detached from the frame 51 of the battery pack, and then the sleeve 1 can be detached from the base 3, so that the moisture absorption block 21 can be replaced conveniently; when the moisture absorption block 21 is replaced by first detaching the base 3, the condensed water is prevented from leaking into the frame 51 of the battery pack.

It is to be understood that the embodiments disclosed herein are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc.

Claims (12)

1. An absorbent device, comprising:

one end of the sleeve (1) is provided with an inwards concave containing cavity (11), and the sleeve (1) is provided with an air hole (12);

an absorbent member (2) disposed within the housing chamber (11);

and a base (3) mounted on the other end of the sleeve (1).

2. The absorbent device of claim 1 wherein said plurality of air holes (12) are provided, and a plurality of said air holes (12) are arranged around the axis of said sleeve (1).

3. The absorbent device of claim 1, wherein said absorbent member (2) comprises an absorbent mass (21) and a waterproof breathable membrane (22), said absorbent mass (21) being disposed within said containment chamber (11), said waterproof breathable membrane (22) being disposed between said absorbent mass (21) and said sleeve (1).

4. The absorbent device of claim 3, wherein said absorbent mass (21) is adapted to said receiving cavity (11).

5. The absorbent device of claim 3, wherein said waterproof breathable membrane (22) is secured within said containment chamber (11).

6. The absorbent device of claim 3 wherein said base (3) is provided with a connector (31) at an end thereof adjacent said sleeve (1), said sleeve (1) being removably secured to said connector (31).

7. The absorbent device of claim 6 wherein said connector (31) is threadably connected to said sleeve (1).

8. A battery module characterized by comprising the moisture absorption device as set forth in any one of claims 1 to 7, which is detachably mounted in the battery module (5).

9. The battery module according to claim 8, wherein the end of the base (3) away from the sleeve (1) is provided with a connecting structure (4), and the connecting structure (4) is detachably mounted in the battery module (5).

10. The battery module according to claim 9, wherein the battery module (5) comprises a frame (51), an edge of the frame (51) is provided with an edge beam (52), and the connecting structure (4) is in threaded connection with the edge beam (52).

11. A battery pack characterized by comprising the battery module (5) according to any one of claims 8 to 10.

12. An electric consumer, characterized in that it comprises a battery pack (6) according to claim 11, said battery pack (6) being intended to provide electric energy.

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