Liquid discharge mechanism, battery box, battery and electric device

Abstract

The invention discloses a liquid discharge mechanism, a battery box, a battery and an electric device. The liquid discharging mechanism comprises a valve body (10), the valve body (10) is provided with a containing cavity (11), a liquid inlet part (12) and an opening part (13), and the liquid inlet part (12) and the opening part (13) are both communicated with the containing cavity (11); the sealing cover assembly (20) is movably arranged on the opening part (13); and the actuating assembly (30) is arranged in the containing cavity (11), and the actuating assembly (30) is configured to respond to liquid entering the containing cavity (11) through the liquid inlet part (12) to actuate, so that the sealing cover assembly (20) moves to at least partially open the opening part (13).

Description

Drain mechanism, battery box, battery and electrical device Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a liquid discharge mechanism, a battery box, a battery and an electrical device. Background Art

[0002] Secondary batteries, especially lithium-ion batteries, offer advantages such as high voltage, high specific energy, long cycle life, environmental friendliness, a wide operating temperature range, and low self-discharge. They are widely used in portable electronic devices and powering large-scale new energy electric vehicles, playing a significant role in addressing environmental pollution and the energy crisis. With the widespread use of lithium-ion batteries, battery safety has become a matter of close concern to users.

[0003] Summary of the Invention

[0004] In one aspect of the present disclosure, a liquid discharge mechanism is provided, comprising: a valve body, a sealing cover assembly and an actuating assembly, wherein the valve body is constructed with a accommodating chamber, a liquid inlet portion and an opening portion, and both the liquid inlet portion and the opening portion are connected to the accommodating chamber; the sealing cover assembly is movably disposed at the opening portion; the actuating assembly is disposed in the accommodating chamber, and the actuating assembly is configured to actuate in response to liquid entering the accommodating chamber through the liquid inlet portion, so as to move the sealing cover assembly to at least partially open the opening portion.

[0005] In this embodiment, an actuating assembly that can be actuated in response to liquid is provided in the accommodating cavity of the valve body. When liquid enters the accommodating cavity through the liquid inlet portion, the actuating assembly is actuated to move the sealing assembly to at least partially open the opening portion, thereby allowing the liquid in the accommodating cavity to be discharged outward from the opening portion to achieve an effective liquid discharge function.

[0006] In some embodiments, the cover assembly includes an active surface, and the actuation assembly is configured to push the active surface after actuation to move the cover assembly to at least partially open the opening.

[0007] The actuating assembly applies a thrust to the active surface of the cover assembly to push the active surface, so that the cover assembly is displaced under the action of the thrust, thereby at least partially opening the opening. This can improve the reliability of opening the opening when the actuating assembly is actuated.

[0008] In some embodiments, the actuating assembly is configured to actuate the rear push surface to move the closure assembly in a direction away from the opening.

[0009] When the active surface of the cover assembly is pushed by the actuating assembly, the cover assembly moves in a direction away from the opening, thereby easily and quickly forming a drainage channel for liquid to flow out between the opening and the cover assembly, thereby increasing the drainage speed and also helping to reduce the space occupied by the drainage mechanism on a plane perpendicular to the direction of the cover assembly.

[0010] In some embodiments, the actuation assembly includes a deformable member configured to expand and deform upon contact with a liquid.

[0011] The deformable member expands and deforms after contacting the liquid, so as to form a driving effect to move the cover assembly through the expanded size. In addition, this method can respond more quickly to the liquid entering the accommodating chamber through the liquid inlet portion, thereby improving the reaction speed of the discharge mechanism.

[0012] In some embodiments, the deformable member is configured to absorb liquid and expand.

[0013] The deformable element can absorb the liquid while in contact with the liquid by utilizing its own ability to absorb the liquid, and naturally expand outward to increase the volume, thereby being more reliably actuated when encountering the liquid.

[0014] In some embodiments, the deformable member includes a groove and / or a through hole communicating from the liquid inlet portion to the opening portion.

[0015] Taking into account that the deformable part will occupy a certain space in the accommodating cavity after expansion and deformation, in order to reduce the possibility of the deformable part interfering with the drainage, a groove and / or through hole connecting from the liquid inlet part to the opening part is provided on the deformable part, so that the liquid can still be discharged smoothly and continuously after the deformable part expands and deforms.

[0016] In some embodiments, the deformable member is configured as a plurality of sheets, and the plurality of sheet-shaped deformable members are stacked along the thickness direction of the sheet.

[0017] Multiple sheet-shaped deformable parts can increase the contact area between the deformable parts and the liquid, improve the sensitivity of responding to the liquid, and multiple sheet-shaped deformable parts stacked along their own thickness direction can more effectively control the expansion direction of the deformable parts, so that they expand and deform in the desired direction.

[0018] In some embodiments, the deformable member comprises electrical paperboard, which can achieve higher durability.

[0019] In some embodiments, the volume of alcohol liquid that can be absorbed by the deformable member per unit volume is a first absorption amount, and the volume of water that can be absorbed by the deformable member per unit volume is a second absorption amount, and the first absorption amount is greater than the second absorption amount.

[0020] By adopting a deformable member that absorbs a larger volume of alcohol liquid than water, the drainage mechanism can obtain a selective drainage function, thereby meeting the requirement of mainly discharging alcohol liquid.

[0021] In some embodiments, the volume change rate generated by the deformable member absorbing a unit volume of alcohol liquid is a first volume deformation rate, and the volume deformation rate generated by the deformable member absorbing a unit volume of water is a second volume deformation rate, and the first volume deformation rate is greater than the second volume deformation rate.

[0022] By adopting a deformable member whose volume change rate when absorbing alcohol liquid is greater than that when absorbing water, the drainage mechanism can obtain a selective drainage function, thereby meeting the requirement of mainly discharging alcohol liquid.

[0023] In some embodiments, the discharge mechanism further comprises a connecting structure, wherein the connecting structure connects the valve body and the cover assembly, and the connecting structure is used to enable the cover assembly to keep covering the opening when the actuating assembly is not actuated.

[0024] By providing a connection structure connecting the valve body and the cover assembly, the actuating assembly can maintain the state of the cover assembly covering the opening when not actuated, thereby meeting the sealing requirements of the area where the discharge mechanism is installed and improving the response sensitivity of the discharge mechanism.

[0025] In some embodiments, the connection structure includes an elastic connection member configured to undergo elastic deformation when the opening portion is opened by the cover assembly.

[0026] When the actuator assembly is actuated, the cover assembly moves to open the opening. The elastic connector allows the cover assembly to return to the opening when the actuator assembly returns to the unactuated state, thereby allowing the drain mechanism to be reused. Furthermore, the elastic connector allows the cover assembly to more stably seal the opening when the actuator assembly is unactuated, thereby maintaining the internal seal of the drain mechanism.

[0027] In some embodiments, the elastic connector is configured as a compression spring, the valve body includes a first pressing portion, and the cover assembly includes a second pressing portion. The first pressing portion and the second pressing portion are respectively located at both ends of the elastic connector. The cover assembly is configured to move the second pressing portion toward the first pressing portion and compress the elastic connector when it is detached from the opening portion.

[0028] A compression spring is arranged between the first pressing part of the valve body and the second pressing part of the cover assembly. The compression spring can stably press the cover assembly against the opening of the valve body through elastic force, and is compressed when the cover assembly is separated from the opening. The elastic force after compression can quickly reset the cover assembly when the actuating assembly is not actuated.

[0029] In some embodiments, the second pressing portion includes a pressing plate and a limiting rod, the first pressing portion includes a mounting hole, the pressing plate is connected to the limiting rod, the limiting rod is movably inserted into the mounting hole, and the elastic connecting member is sleeved on the limiting rod and clamped between the pressing plate and the second pressing portion.

[0030] The first pressing part includes a pressing plate and a limiting rod passing through a mounting hole on the second pressing part. The elastic connecting piece is sleeved on the limiting rod and is clamped between the pressing plate and the second pressing part. In this way, when the second pressing part and the pressing plate move toward each other, the length of the elastic connecting piece is compressed, and the elastic connecting piece makes the second pressing part and the pressing plate tend to move away from each other, so as to realize rapid reset of the cover assembly.

[0031] In some embodiments, the cover assembly further includes a cover body, and the limiting rod is detachably connected to the cover body.

[0032] The cover assembly adopts a detachable structure of the cover body and the limit rod, so that the cover body and the limit rod can be manufactured separately and then assembled, thereby reducing the manufacturing difficulty and facilitating component replacement and maintenance.

[0033] In some embodiments, the elastic connector is located in the accommodating cavity.

[0034] Arranging the elastic connector in the accommodating cavity of the valve body can reduce the space occupied by the discharge mechanism and reduce the risk of interference with the elastic connector by other structures outside the discharge mechanism.

[0035] In some embodiments, the elastic connector includes a disc spring, the valve body includes a limiting protrusion spaced apart from the wall of the accommodating chamber, and the elastic connector is clamped between the limiting protrusion and the cover assembly.

[0036] The disc spring located between the limiting protrusion and the cover assembly provides the cover assembly with an elastic force to cover the valve body opening, which can satisfy the elastic force while occupying a smaller space, thereby realizing a smaller-sized liquid discharge mechanism.

[0037] In some embodiments, the elastic connector includes a disc spring, the valve body includes a first limiting protrusion and a second limiting protrusion spaced apart on the wall of the accommodating chamber, and the elastic connector is clamped between the first limiting protrusion and the second limiting protrusion.

[0038] The disc spring can be stably maintained by the first limiting protrusion and the second limiting protrusion arranged at intervals, so that the elastic connecting member can reliably provide elastic force, and can occupy a smaller space while meeting the elastic force, thereby realizing a smaller-sized discharge mechanism.

[0039] In some embodiments, the cover assembly further includes a cover body having an extension section and a hook section. The extension section extends from the cover body toward the accommodating cavity. The hook section is located on the extension section and is used to abut the end face of the elastic connector facing away from the opening.

[0040] The hook section can stably abut against the end surface of the elastic connector through the elasticity of the extension section, making assembly easy.

[0041] In some embodiments, the elastic connector includes a tension spring, the valve body includes a first fixed portion, the cover assembly includes a second fixed portion, and the two ends of the elastic connector are respectively connected to the first fixed portion and the second fixed portion. When the cover assembly is detached from the opening, the second fixed portion can move in a direction away from the first fixed portion and stretch the elastic connector.

[0042] The cover assembly is kept at the opening by providing elastic force through the tension spring. When the actuating assembly is actuated, the tension spring is stretched, so that the actuating assembly is reset when it is not actuated by the stretched elastic force.

[0043] In some embodiments, the elastic connecting member is located in the accommodating cavity, the actuating assembly is provided with a through hole, and the elastic connecting member is passed through the through hole.

[0044] By arranging the elastic connecting member in the through hole of the actuating assembly, the elastic connecting member and the actuating assembly can share a height space, thereby facilitating the realization of a smaller-sized liquid discharge mechanism.

[0045] In some embodiments, the first fixing portion is located on the bottom wall of the accommodating cavity, and the second fixing portion is located on the surface of the cover assembly facing the accommodating cavity. Along the through direction of the through hole, the first fixing portion and the second fixing portion are arranged opposite to each other.

[0046] The first fixing portion and the second fixing portion connect the elastic connector along the through-going direction of the through hole, so that interference is not likely to occur between the elastic connector and the actuating assembly during relative movement, thereby enabling the discharge mechanism to reliably perform the discharge function.

[0047] In some embodiments, the liquid inlet portion includes two spaced-apart liquid inlets, the first fixed portion is configured as a partition strip separating the two liquid inlets, and a first hook is provided at one end of the elastic connecting member close to the first fixed portion, and the first hook hooks the partition strip to connect the valve body and the elastic connecting member.

[0048] The two spaced-apart liquid inlet holes can not only realize liquid inlet through the liquid inlet port, but also utilize the dividing strip between the two liquid inlets to connect the first hook at the end of the elastic connector, which can facilitate the installation of the elastic connector and provide the liquid inlet function of the valve body.

[0049] In some embodiments, the cover assembly protrudes from the surface facing the accommodating cavity to form a second fixing portion, and the elastic connector is provided with a second hook at one end close to the second fixing portion, and the second fixing portion is provided with a hanging hole, and the second hook hooks the hanging hole to connect the cover assembly and the elastic connector.

[0050] The protrusion on the cover assembly is provided with a hook to connect with the second hook at the end of the elastic connector, so that the elastic connector can be easily installed.

[0051] In some embodiments, the liquid discharge mechanism further includes a fixing member, and the fixing member is used to fix the valve body to the target member.

[0052] The valve body is fixed to the target part by the fixing part, so that the valve body can more reliably realize the discharge function at the position of the target part.

[0053] In some embodiments, the outer wall of the valve body includes a threaded segment extending along a first direction, and a mating portion formed by extending a preset size along a plane perpendicular to the first direction. The mating portion is located at one end of the threaded segment in the screwing direction. The fixing member includes a fixing nut, which is used to be locked to the outer wall through threads and form a clamping space together with the mating portion.

[0054] The threaded section of the valve body is threadedly connected to the fixing nut, and together with the matching portion and the fixing nut, a clamping space for clamping the target part is formed. This threaded connection method is very convenient and quick to assemble and disassemble, and can be adapted to target parts of different thicknesses. It is also easy to realize torque monitoring during the installation process, which can improve the reliability of the fixed connection.

[0055] In some embodiments, the opening portion includes a first groove, a first elastic sealing member is disposed in the first groove, and at least a portion of the cover assembly is located in the first groove when the actuating assembly is not actuated.

[0056] At least part of the cover assembly is located in the first groove when the actuating assembly is not actuated, and the first elastic sealing member in the first groove of the opening portion can improve the sealing performance between the cover assembly and the opening portion.

[0057] In some embodiments, the capping assembly includes an energy-absorbing structure. This structure can absorb energy when the capping assembly is scraped, squeezed, or collided with other structures on the outside, thereby preventing or reducing damage to the drainage mechanism and lowering the risk of failure of the drainage mechanism.

[0058] In some embodiments, the energy absorbing structure includes a buffer cavity in the cover assembly. The energy absorbing structure can be a buffer cavity provided in the cover assembly, which can effectively absorb energy through deformation of the buffer cavity when the cover assembly is squeezed or impacted.

[0059] In some embodiments, the cover assembly includes a cover body and a baffle, the baffle being disposed on a side of the cover body away from the valve body and being connected to or integrally formed with the cover body; wherein a buffer chamber is located between the cover body and the baffle. The cover assembly seals the opening through the cover body, provides protection for the cover body through the baffle, and absorbs energy through the buffer chamber between the baffle and the cover body.

[0060] In some embodiments, the cover body includes a cover plate, wherein a first cover plate surface adjacent to the baffle plate has an inner recess; wherein the baffle plate surface adjacent to the cover plate and the inner recess form a buffer cavity. The cover plate of the cover body may have an inner recess formed on its surface, and the inner recess and the baffle plate surface enclose a buffer cavity. When the baffle plate is squeezed or impacted, it deforms first within the buffer cavity, thereby reducing the energy transferred to the baffle plate.

[0061] In some embodiments, the wall of the accommodating chamber is provided with a guide groove, and the cover body further includes a guide post protruding toward the accommodating chamber. When the cover body is sealed over the opening, the guide post cooperates with the guide groove to limit the rotation angle of the cover plate relative to the valve body. The cover body includes a cover plate and a guide post protruding toward the accommodating chamber. The guide post is capable of sliding within the guide groove in the wall of the accommodating chamber, preventing the cover body from rotating within the valve body when the actuating assembly is actuated, thereby preventing the liquid discharge process from being affected.

[0062] In some embodiments, the baffle surface is flat. Using a baffle with a flat baffle surface can reduce the difficulty of manufacturing and processing the baffle, and is conducive to using harder materials to resist external scratches, extrusions or collisions.

[0063] In some embodiments, the baffle is made of a material having a higher strength than the material of the closure body. Using a higher-strength material to manufacture the baffle can improve the ability of the drainage mechanism's closure assembly to resist external scraping, squeezing, or impact, while using a lower-strength material to manufacture the closure body facilitates the formation of more complex structures, such as a closure body comprising a cover plate with an inner recess and guide posts.

[0064] In some embodiments, the outer wall of the valve body includes a mating portion formed by extending a preset size along a plane perpendicular to the thickness direction of the baffle, the mating portion includes a first stepped hole section and a second stepped hole section, the cross-sectional dimension of the second stepped hole section is larger than the cross-sectional dimension of the first stepped hole section, the cover plate is configured to be at least partially located in the second stepped hole section when the actuating assembly is not actuated, and the second cover plate surface on the side of the cover plate adjacent to the actuating assembly is sealed with the step surface between the first stepped hole section and the second stepped hole section.

[0065] The cover body is accommodated by the stepped hole, and the second cover plate surface is sealed with the step surface, so that the sealed portion can be shielded by the second stepped hole section, reducing the risk of external impurities entering the sealed portion.

[0066] In some embodiments, the baffle has a drainage hole that passes through the thickness direction of the cover assembly, and the drainage hole is located on the circumferential outer side of the cover plate.

[0067] By arranging drainage holes penetrating the baffle plate, and distributing the drainage holes on the circumferential outer side of the cover plate, liquid can be discharged outward through the drainage holes on the baffle plate when the actuating assembly is actuated.

[0068] In some embodiments, a plurality of drainage holes are provided, and the plurality of drainage holes are arranged at intervals along the circumferential direction on the circumferential outer side of the cover plate.

[0069] Arranging multiple drainage holes at intervals in the circumferential direction can make the drainage more uniform, and even if some drainage holes are blocked by external impurities, drainage can be achieved through other drainage holes, which can improve the normal operation of the drainage function.

[0070] In some embodiments, the cover assembly further includes: a snap ring, which is arranged on the outer edge of the baffle and is connected to or integrally formed with the baffle; wherein the snap ring has a flange protruding from the baffle toward the actuating assembly.

[0071] The flange of the clamping ring provided on the outer edge of the baffle can form a shielding effect in the radial direction, which can reduce the blocking and sealing effects of external impurities on the cover assembly to a certain extent.

[0072] In some embodiments, the outer wall of the valve body includes a fitting portion extending along a plane perpendicular to the thickness direction of the baffle to a preset size, and the flange is located on the outer side of the fitting portion.

[0073] Providing the flange on the outside of the mating portion can reduce the possibility of the valve body being laterally impacted by external structures by shielding the valve body. It can also shield some external impurities and reduce the risk of impurities blocking the drainage channel.

[0074] In some embodiments, the flange has a drainage notch. The drainage function can be achieved by setting a drainage notch on the flange.

[0075] In some embodiments, a plurality of drainage gaps are provided, and the plurality of drainage gaps are circumferentially spaced apart on the flange.

[0076] Multiple drainage gaps are arranged at intervals in the circumferential direction of the flange, which can achieve uniform drainage function in the radial direction. Even if some drainage gaps are blocked by external impurities, drainage can be achieved through other drainage gaps, which can improve the normal operation of the drainage function.

[0077] In some embodiments, the baffle has a plurality of drainage holes extending through the baffle in a thickness direction; the plurality of drainage holes are circumferentially spaced apart on the outer edge of the cover plate and are alternately arranged circumferentially with the plurality of drainage notches.

[0078] The plurality of drainage holes penetrating along the thickness direction and the plurality of drainage notches on the flange are alternately arranged in the circumferential direction, so that the drainage can achieve more uniform radial drainage and circumferential drainage at various positions in the circumferential direction.

[0079] In some embodiments, the cover body includes: a cover plate and a core body, the cover plate is used to cover the opening; the core body is connected to the cover plate or made integrally and is located on a side of the cover plate adjacent to the actuating assembly, and the core body has a liquid guide groove.

[0080] The surface of the core of the cover body faces the actuating assembly, so that it can abut against the actuating assembly when the actuating assembly is actuated and move under the push of the actuating assembly. The liquid guide groove provided on the core body can guide the liquid entering the accommodating chamber to be discharged outward through the drainage channel between the cover plate and the opening.

[0081] In some embodiments, the core includes a plurality of sub-cores, and the plurality of sub-cores are adjacent to each other to form a liquid-conducting groove.

[0082] The gaps between adjacent sub-cores in the plurality of sub-cores can form a plurality of liquid-conducting grooves in the form of flow channels, thereby achieving uniform liquid discharge outwards.

[0083] In some embodiments, the liquid discharge mechanism further comprises a fixing member, which is used to fix the valve body to the target member; wherein the circumferential side wall of the fixing member has a water inlet notch, and the liquid inlet portion includes a liquid inlet hole provided in the wall of the accommodating chamber, the liquid inlet hole being connected to the water inlet notch. When the valve body is fixed to the fixing member, the water inlet notch is provided on the circumferential side wall of the fixing member and is connected to the liquid inlet hole in the wall of the accommodating chamber. In this way, when the fixing member is fixed to the target member, liquid flowing into the fixing member can flow into the accommodating chamber through the water inlet notch and the liquid inlet hole, making the liquid discharge process smoother.

[0084] In one aspect of the present disclosure, a battery box is provided, comprising: a box body and the aforementioned drainage mechanism, wherein the box body is used to accommodate battery cells; and the drainage mechanism is located at the lower portion of the box body.

[0085] By arranging the liquid discharge mechanism at the lower part of the box body, the liquid in the box body can flow to the lower part of the box body under the action of gravity, so that the liquid in the box body can be quickly discharged by utilizing the liquid discharge mechanism.

[0086] In one aspect of the present disclosure, a battery is provided, comprising: the aforementioned drainage mechanism; or the aforementioned battery box.

[0087] The battery using the above-mentioned drainage mechanism or battery box can improve the reliability and safety of the battery.

[0088] In some embodiments, the battery further includes: a battery cell and a thermal management component, wherein the battery cell is disposed in the box; and the thermal management component is disposed in the box for performing heat exchange with the battery cell.

[0089] Liquid generated or leaked from the heat management component disposed in the box during use can be quickly discharged through the drainage mechanism.

[0090] In some embodiments, multiple thermal management components are provided. When multiple thermal management components are provided in the battery case, each thermal management component has multiple joints when installed and connected. The drainage mechanism can discharge liquid working fluid leaking from the joints to the outside of the battery, thereby improving the reliability and safety of the battery.

[0091] In some embodiments, the battery cell has a terminal post located at the bottom or side of the battery cell.

[0092] In the case where the pole of the battery cell is arranged at the bottom or side of the battery cell, the liquid discharge mechanism can quickly discharge the liquid, reducing the risk of the liquid contacting the pole and causing a short circuit.

[0093] In one aspect of the present disclosure, there is provided an electrical device comprising: the aforementioned battery, wherein the battery is used to provide electrical energy.

[0094] The electrical device using the battery has higher reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on the drawings without any creative work.

[0096] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0097] FIG1 is a schematic structural diagram of some embodiments of an electric device according to the present disclosure;

[0098] FIG2 is a schematic structural diagram of some embodiments of batteries according to the present disclosure;

[0099] FIG3A is a schematic diagram of the exploded structure of the first embodiment of the liquid discharge mechanism according to the present disclosure;

[0100] FIG3B is a schematic cross-sectional view of the embodiment shown in FIG3A in an unopened state;

[0101] FIG3C is a cross-sectional schematic diagram of the embodiment shown in FIG3A in an open state;

[0102] FIG3D is a schematic diagram of the three-dimensional structure of the valve body in the embodiment shown in FIG3A ;

[0103] FIG3E is a schematic diagram of the three-dimensional structure of the actuating assembly in the embodiment shown in FIG3A ;

[0104] 3F and 3G are schematic diagrams of the three-dimensional structure of the cover body in the embodiment shown in FIG. 3A at different viewing angles;

[0105] FIG3H is a schematic diagram of the three-dimensional structure of the baffle in the embodiment shown in FIG3A ;

[0106] FIG3I is a schematic diagram of the three-dimensional structure of the snap ring in the embodiment shown in FIG3A ;

[0107] 3J and 3K are schematic diagrams of the three-dimensional structure of the cover assembly in the embodiment shown in FIG. 3A at different viewing angles;

[0108] FIG3L is a schematic diagram of the three-dimensional structure of the fixing member in the embodiment shown in FIG3A ;

[0109] FIG4A is a schematic diagram of the exploded structure of a second embodiment of the liquid discharge mechanism according to the present disclosure;

[0110] 4B and 4C are perspective schematic diagrams of the installation structure of the embodiment shown in FIG. 4A at different viewing angles;

[0111] FIG4D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in FIG4A in an unopened state;

[0112] FIG5A is a schematic diagram of the exploded structure of a third embodiment of the liquid discharge mechanism according to the present disclosure;

[0113] 5B and 5C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in FIG. 5A at different viewing angles;

[0114] FIG5D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in FIG5A in an unopened state;

[0115] FIG6A is a schematic diagram of the exploded structure of a fourth embodiment of the liquid discharge mechanism according to the present disclosure;

[0116] 6B and 6C are respectively perspective schematic views of the mounting structure of the embodiment shown in FIG. 6A at different viewing angles;

[0117] FIG6D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in FIG6A in an unopened state;

[0118] FIG7A is a schematic diagram of the exploded structure of a fifth embodiment of the liquid discharge mechanism according to the present disclosure;

[0119] 7B and 7C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in FIG. 7A at different viewing angles;

[0120] FIG7D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in FIG7A in an unopened state.

[0121] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components.

[0122] Description of reference numerals:

[0123] 10. Valve body; 11. Accommodating cavity; 111. Guide groove; 112. Position-limiting protrusion; 12. Liquid inlet; 121. Liquid inlet port; 122. Liquid inlet hole; 13. Opening; 131. First groove; 14. Threaded section; 15. Fitting portion; 151. Second groove; 152. First stepped hole section; 153. Second stepped hole section; 154. Step surface; 16. Positioning post;

[0124] 20. Cover assembly; 21. Cover body; 211. Cover plate; 212. Sub-core; 213. Guide post; 214. Liquid guide groove; 22. Baffle; 221. Drain hole; 23. Buffer cavity; 24. Snap ring; 241. Flange; 242. Drain notch;

[0125] 30. Actuating assembly; 31. Through hole; 32. Deformable member; 33. Groove;

[0126] 41. Extension spring; 42. Compression spring; 43. Disc spring;

[0127] 51. First elastic sealing member; 52. Second elastic sealing member;

[0128] 60. Fixing piece; 61. Internal thread; 62. Water inlet notch;

[0129] 70. Battery box; 71. Box body; 711. Upper box body; 712. Lower box body; 72. Drain mechanism;

[0130] 80. Battery; 81. Battery cell; 82. Thermal management component;

[0131] 90. Vehicle; 91. Controller; 92. Motor. DETAILED DESCRIPTION

[0132] The following detailed description of the embodiments of the present disclosure is provided in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure, that is, the present disclosure is not limited to the described embodiments.

[0133] In the description of the present disclosure, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0134] The directional words appearing in the following description are all directions shown in the figures and do not limit the specific structure of the present disclosure. In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0135] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0136] In some related technologies, when a cooling plate is installed inside a battery box to manage the cooling and heat dissipation of battery modules or battery cells, there is a risk of leakage of liquid working fluid (such as water or refrigerant) circulating inside the cooling plate at the joints. In addition, the battery box is susceptible to condensation due to environmental changes or humid air. Accumulated condensation or leaked liquid working fluid inside the battery box poses a risk of causing a battery short circuit, affecting the battery's reliability and safety.

[0137] In view of this, embodiments of the present disclosure provide a liquid discharge mechanism, a battery box, a battery, and an electrical device, which can improve the reliability and safety of the battery.

[0138] The drainage mechanism of the embodiment of the present disclosure can be applied to a battery box or a battery, and can be used for draining the liquid in the battery box or the battery, and can also be applied to other equipment or containers that require drainage, etc. The battery box can be applied to various types of batteries to accommodate battery cells or battery modules. The battery can be used in various types of electrical equipment that use batteries. Electrical equipment can be mobile phones, portable devices, laptops, electric vehicles, electric vehicles, ships, spacecraft, electric toys and electric tools, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers. The embodiment of the present disclosure does not impose any special restrictions on the above-mentioned electrical equipment.

[0139] The battery module installed in the battery box may include multiple battery cells connected in series, parallel, or mixed. A battery cell is the smallest unit of a battery. A battery cell includes an electrode assembly capable of undergoing an electrochemical reaction. Battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., although the embodiments of the present disclosure are not limited to this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., although the embodiments of the present disclosure are not limited to this.

[0140] Figure 1 is a schematic diagram of the structure of some embodiments of electrical devices according to the present disclosure. For convenience, the electrical device is described using a vehicle 90 as an example. Vehicle 90 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle or a hybrid vehicle. A battery 80 can be installed at the bottom, front, or rear of vehicle 90.

[0141] The battery 80 can be used to power the vehicle 90. For example, the battery 80 can serve as the operating power source for the vehicle 90 and the circuit system of the vehicle 90, such as the power required for starting, navigation, and operation of the vehicle 90. The battery 80 can not only serve as the operating power source for the vehicle 90, but also as the driving power source for the vehicle 90, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 90.

[0142] Vehicle 90 may also be provided with axles, wheels, a motor 92, and a controller 91. The controller 91 is used to control the battery 80 to power the motor 92. For example, when the vehicle 90 is powered by the battery 80, the controller 91 can provide the motor 92 with the power required for uniform speed and acceleration. The motor 92 is used to drive the axles to rotate, thereby driving the wheels to rotate.

[0143] Figure 2 is a schematic diagram of the structure of some embodiments of batteries according to the present disclosure. Referring to Figure 2, in some embodiments, a battery 80 includes a battery case 70 and battery cells 81. The battery case 70 is configured to accommodate the battery cells 81 and can provide functions such as cooling, sealing, and impact protection for the battery cells 81, or reduce the possibility of liquids or other foreign matter adversely affecting the charging, discharging, or safety of the battery cells.

[0144] The battery box 70 may include a box body 71 for accommodating battery cells 81 and a drainage mechanism 72. The drainage mechanism 72 may be located at the bottom of the box body 71, so that liquid within the box body 71 can flow to the bottom of the box body 71 under the action of gravity, thereby quickly draining the liquid within the box body 71 using the drainage mechanism 72. The battery box 70 may include one or more drainage mechanisms 72. Multiple drainage mechanisms 72 may be arranged at intervals or in zones along at least one direction on the bottom surface of the lower portion of the box body 71.

[0145] In Figure 2, the housing 71 may include an upper housing 711 and a lower housing 712. The upper housing 711 and the lower housing 712, when engaged, form a space for accommodating the battery cells 81. A drainage mechanism 72 may be provided on the bottom surface of the lower housing 712. Furthermore, the battery 80 may further include a thermal management component 82 disposed within the housing 71, such as a cooling plate with a liquid working fluid circulating therein. The thermal management component 82 is configured to exchange heat with the battery cells 81. Thus, liquid generated or leaked from the thermal management component 82 disposed within the housing 71 during use can be quickly drained through the drainage mechanism 72.

[0146] Referring to Figure 2 , in some embodiments, multiple thermal management components 82 are provided. When multiple thermal management components 82 are provided within the housing 71 , each thermal management component 82 has multiple joints during installation and connection. The large number of joints also increases the risk of liquid leakage. The drain mechanism 72 is designed to drain liquid leaking from the joints out of the battery 80 , thereby improving the reliability and safety of the battery 80 .

[0147] Multiple battery cells 81 can be provided within the housing 71, and the multiple battery cells 81 can be electrically connected to each other (e.g., in series, parallel, or hybrid) to achieve the desired electrical performance parameters of the battery 80. The multiple battery cells 81 can be arranged in rows, and one or more rows of battery cells 81 can be provided within the housing 71 as needed.

[0148] In some embodiments, multiple battery cells 81 may be arranged along at least one of the length and width of the housing 71. Depending on actual needs, at least one row or column of battery cells 81 may be provided. Alternatively, one or more layers of battery cells 81 may be provided along the height of the battery 80.

[0149] In some embodiments, multiple battery cells 81 may be connected in series, parallel, or hybrid to form a battery module, and then the multiple battery modules may be connected in series, parallel, or hybrid to form a whole unit, which is then housed in the housing 71. In other embodiments, all battery cells 81 may be directly connected in series, parallel, or hybrid to form a whole unit, and then all battery cells 81 may be housed in the housing 71.

[0150] The battery cell 81 may include a housing, an electrode assembly, and an end cap assembly. The battery cell 81 also contains an electrolyte. The housing has a chamber and an end opening communicating with the chamber. The chamber is used to house the electrode assembly. The housing may be a hollow rectangular parallelepiped, a hollow cube, or a hollow cylinder, depending on the shape of the electrode assembly or assemblies. The housing may be made of a conductive metal or plastic. Alternatively, the housing may be made of aluminum or an aluminum alloy.

[0151] The end cap assembly is disposed at the open end to form a sealed cavity with the housing to accommodate the electrode assembly. The end cap assembly may include two poles with opposite polarities, each electrically connected to a tab on a pole piece of corresponding polarity in the electrode assembly via a connector assembly or directly.

[0152] The battery cell 81 has a pole, which may be located at the bottom or side of the battery cell 81. In this case, the liquid discharge mechanism 72 can quickly discharge the liquid, reducing the risk of the liquid contacting the pole and causing a short circuit.

[0153] The electrode assembly may include a positive electrode sheet, a negative electrode sheet, and a separator located between the positive and negative electrode sheets. The operation of the battery cell is achieved by the movement of metal ions inside between the positive and negative electrode sheets.

[0154] The positive electrode sheet includes a positive current collector and a positive active material layer. The positive electrode tab is connected to or formed on the positive current collector. For lithium-ion batteries, for example, the positive current collector can be made of aluminum, and the positive active material can be a lithiated material that can provide lithium ions, such as lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. When a bonding material is used to bond the positive current collector and the positive active material layer, the bonding material can be polyvinylidene fluoride (PVDF).

[0155] The negative electrode sheet consists of a negative current collector and a negative active material layer. The negative electrode tab is connected to the negative current collector. For lithium-ion batteries, for example, the negative current collector can be made of copper, and the negative active material can be materials capable of storing lithium ions, such as graphite, silicon, or lithium titanate. When a binder is used to bond the negative current collector and the negative active material layer, the binder can be carboxymethyl cellulose, epoxy resin, or styrene-butadiene rubber.

[0156] The material of the diaphragm can be PP (polypropylene) or PE (polyethylene). The electrolyte includes an electrolyte and a solvent. The electrolyte is an organic metal salt, an inorganic salt, etc., which can provide metal ions that shuttle between the positive electrode and the negative electrode. In order to have sufficient overcurrent capacity, the number of positive electrode tabs can be multiple and stacked together, and the number of negative electrode tabs can be multiple and stacked together. In addition, the electrode assembly can be a wound structure or a laminated structure, and the embodiments of the present disclosure are not limited to this.

[0157] Figure 3A is a schematic diagram of the exploded structure of the first embodiment of the liquid discharge mechanism according to the present disclosure. Figure 3B is a schematic cross-sectional view of the embodiment shown in Figure 3A in an unopened state. Figure 3C is a schematic cross-sectional view of the embodiment shown in Figure 3A in an open state. Figure 3D is a schematic diagram of the three-dimensional structure of the valve body in the embodiment shown in Figure 3A. Figure 3E is a schematic diagram of the three-dimensional structure of the actuating assembly in the embodiment shown in Figure 3A. Figures 3F and 3G are schematic diagrams of the three-dimensional structure of the cover body in the embodiment shown in Figure 3A at different viewing angles, respectively. Figure 3H is a schematic diagram of the three-dimensional structure of the baffle in the embodiment shown in Figure 3A. Figure 3I is a schematic diagram of the three-dimensional structure of the retaining ring in the embodiment shown in Figure 3A. Figures 3J and 3K are schematic diagrams of the three-dimensional structure of the cover assembly in the embodiment shown in Figure 3A at different viewing angles, respectively. Figure 3L is a schematic diagram of the three-dimensional structure of the fixing member in the embodiment shown in Figure 3A.

[0158] 3A-3L , an embodiment of the present disclosure provides a liquid discharge mechanism 72, comprising a valve body 10, a cover assembly 20, and an actuator assembly 30. The valve body 10 is configured with a receiving chamber 11, a liquid inlet 12, and an opening 13, both of which are connected to the receiving chamber 11. The cover assembly 20 is movably disposed at the opening 13. The actuator assembly 30 is disposed within the receiving chamber 11 and is configured to actuate in response to liquid entering the receiving chamber 11 through the liquid inlet 12, so as to move the cover assembly 20 to at least partially open the opening 13.

[0159] An actuating assembly 30 that can be actuated in response to liquid is provided in the accommodating cavity 11 of the valve body 10. When liquid enters the accommodating cavity 11 through the liquid inlet portion 12, the actuating assembly 30 is actuated to move the sealing assembly 20 to at least partially open the opening portion 13, thereby allowing the liquid in the accommodating cavity 11 to be discharged outward from the opening portion 13 to achieve an effective drainage function.

[0160] The liquid discharge function here is achieved by actuating the actuating assembly 30 to establish a liquid discharge channel from the liquid inlet 12 of the valve body 10 to the accommodating chamber 11 and then to the opening 13, so that the liquid entering the accommodating chamber 11 through the liquid inlet 12 is discharged outward from the opening 13. The actuating assembly 30 can be actuated in different ways in response to liquid, and the response to liquid here includes contact with the liquid or sensing the liquid in a non-contact manner. The actuation of the actuating assembly 30 to move the cover assembly 20 can be by directly applying a force to the cover assembly 20, or by indirectly applying a force to the cover assembly 20 by acting on an intermediate piece. In addition, the ways in which the cover assembly 20 moves to at least partially open the opening 13 include moving away from the opening along the opening direction of the opening 13, moving away along the opening direction perpendicular to the opening 13 to expose the opening 13, or changing the covering range of the cover assembly 20 on the opening 13 by rotating, etc.

[0161] 3B , in some embodiments, the cover assembly 20 includes an operating surface S1, and the actuating assembly 30 is configured to push the operating surface S1 after actuation, so that the cover assembly 20 moves to at least partially open the opening 13. By having the actuating assembly 30 apply a thrust to the operating surface S1 of the cover assembly 20 to push the operating surface S1, the cover assembly 20 is displaced under the action of the thrust, thereby at least partially opening the opening 13. This can improve the reliability of opening the opening 13 when the actuating assembly 30 is actuated.

[0162] In Figures 3B and 3C , after actuation, the actuator assembly 30 pushes the active surface S1, causing the cap assembly 20 to move away from the opening 13. In Figures 3A-3C , the direction in which the cap assembly 20 moves away from the opening 13 is direction z, which can be parallel to the thickness of the cap assembly 20. In Figure 3B , when the actuator assembly 30 is in the unactuated state, the cap assembly 20 abuts against the end surface of the opening 13, forming a closed area where liquids can flow in a different direction.

[0163] When the active surface S1 of the cover assembly 20 is pushed by the actuating assembly 30, the cover assembly 20 moves in a direction away from the opening 13. As can be seen from FIG3C , the gap formed between the end surface of the end cover assembly 20 and the opening 13 at this time constitutes a drainage channel between the end cover assembly 20 and the opening 13 (indicated by shadow in FIG3C ). Referring to the multiple black arrows in FIG3C , liquid can enter the accommodating cavity of the valve body from the liquid inlet portion on the side of the valve body, then flow toward the opening along the direction z, and then be discharged outward from the drainage channel between the opening and the end cover assembly 20. In this way, by easily and quickly forming a drainage channel for liquid to flow out between the opening 13 and the cover assembly 20, the drainage speed is increased, which is also conducive to reducing the space occupied by the drainage mechanism 72 on the plane perpendicular to the direction of the cover assembly 20.

[0164] 3A and 3E , in some embodiments, the actuating assembly 30 includes a deformable member 32 configured to expand and deform upon contact with liquid. Upon contact with liquid, the deformable member 32 expands and deforms, and its expanded size creates a driving force for moving the capping assembly 20. This approach allows for a more rapid response to liquid entering the accommodating chamber 11 through the liquid inlet portion 12, thereby increasing the responsiveness of the liquid discharge mechanism 72.

[0165] In some embodiments, the deformable member 32 is configured to expand by absorbing liquid. Leveraging its inherent liquid-absorbing capacity, the deformable member 32 absorbs liquid upon contact and naturally expands outward, increasing its volume, thereby more reliably actuating upon contact with liquid. In addition to absorbing liquid, in other embodiments, the deformable member 32 can also expand and deform by pressure from the liquid on the deformable member 32 or other means.

[0166] Considering that the deformable member 32 occupies a certain amount of space within the accommodating chamber 11 after expansion and deformation, and to reduce the possibility of the deformable member 32 interfering with liquid drainage, referring to FIG3E , in some embodiments, the deformable member 32 includes a groove 33 and / or a through hole 31 connecting from the liquid inlet portion 12 to the opening portion 13. This allows for smooth and continuous liquid drainage even after the deformable member 32 expands and deforms. In FIG3E , the deformable member 32 has a through hole 31 extending through the center and multiple grooves 33 located around the periphery.

[0167] In some embodiments, the deformable member 32 can be a single piece. Referring to FIG. 3E , in some embodiments, the deformable member 32 can be configured as a plurality of sheets, with the plurality of sheet-shaped deformable members 32 stacked along their thickness. Each sheet-shaped deformable member 32 can have a through hole running through the center and multiple grooves located around the periphery. When the plurality of deformable members 32 are stacked together along direction z, the through holes of the deformable members can interpenetrate to form a single, integrated through hole, while the grooves around the periphery of the deformable members can correspondingly form a continuous, elongated groove.

[0168] Multiple sheet-shaped deformable elements 32 can increase the contact area between the deformable element 32 and the liquid, improving its sensitivity to liquid. Furthermore, stacking multiple sheet-shaped deformable elements 32 along their thickness direction (direction z) can more effectively control the expansion direction of the deformable element 32, causing it to expand and deform in the desired direction. For example, for a liquid-absorbing deformable element, as it becomes thicker after absorbing liquid, the stacking of multiple thickened deformable elements in the thickness direction results in expansion and deformation in the thickness direction.

[0169] In order to ensure that the deformable member 32 maintains durability after contact with liquid, in some embodiments, the deformable member 32 comprises electrical cardboard for greater durability. In other embodiments, the deformable member may be made of other liquid-absorbing materials or structures, such as cellulose polymer organic materials.

[0170] In some embodiments, the volume of alcoholic liquid that can be absorbed per unit volume of the deformable member 32 is a first absorption capacity, and the volume of water that can be absorbed per unit volume of the deformable member 32 is a second absorption capacity, where the first absorption capacity is greater than the second absorption capacity. By employing a deformable member 32 that absorbs a greater volume of alcoholic liquid than it absorbs water, the drain mechanism 72 can achieve a selective drain function, thereby primarily satisfying the need to drain alcoholic liquids. For example, if the coolant circulating through the cooling plate within a battery box is an alcoholic liquid such as ethylene glycol, in the event of a leak, the drain mechanism including such a deformable member 32 can selectively drain the leak.

[0171] Furthermore, the volume change rate of the deformable member 32 per unit volume of alcoholic liquid absorbed is a first volume deformation rate, and the volume deformation rate of the deformable member 32 per unit volume of water absorbed is a second volume deformation rate. The first volume deformation rate may be greater than the second volume deformation rate. By employing a deformable member 32 having a volume change rate for absorbing alcoholic liquid greater than that for absorbing water, the drain mechanism 72 can achieve a selective drain function, thereby satisfying the requirement of primarily draining alcoholic liquids.

[0172] To ensure that the actuator assembly 30 maintains the cap assembly 20 sealed against the opening 13 when not actuated, in some embodiments, the drain mechanism 72 further includes a connecting structure. The connecting structure connects the valve body 10 and the cap assembly 20 and is configured to maintain the cap assembly 20 sealed against the opening 13 when the actuator assembly 30 is not actuated. This ensures that the sealing requirements of the area in which the drain mechanism 72 is installed are met and improves the responsiveness of the drain mechanism 72.

[0173] In some embodiments, the connection structure includes an elastic connector. The elastic connector is configured to undergo elastic deformation when the capping assembly 20 opens the opening 13. When the actuating assembly 30 is actuated, the capping assembly 20 moves to open the opening 13. The elastic connector allows the capping assembly 20 to return to the opening 13 when the actuating assembly 30 returns to the unactuated state, thereby allowing the drain mechanism 72 to be reused. Furthermore, the elastic connector allows the capping assembly 20 to more stably maintain the capping opening 13 when the actuating assembly 30 is unactuated, thereby maintaining the internal seal of the drain mechanism.

[0174] Referring to Figure 3A, in some embodiments, the elastic connector includes a tension spring 41. In Figures 3B and 3G, the valve body 10 may include a first fixing portion D1, and the cover assembly 20 may include a second fixing portion D2. The two ends of the elastic connector are respectively connected to the first fixing portion D1 and the second fixing portion D2. When the cover assembly 20 is separated from the opening portion 13, the second fixing portion D2 can be moved in a direction away from the first fixing portion D1 and stretch the elastic connector. The tension spring 41 provides an elastic force to keep the cover assembly 20 in the opening portion 13. When the actuating assembly 30 is actuated, the tension spring 41 is stretched, so that the actuating assembly 30 is reset when it is not actuated by the stretched elastic force.

[0175] 3B , the actuator assembly 30 is provided with a through hole 31, and the elastic connector can be disposed in the accommodating cavity 11 and passed through the through hole 31. This allows the elastic connector and the actuator assembly 30 to share a height space, thereby facilitating a smaller size of the discharge mechanism 72.

[0176] In Figure 3B , the first fixing portion D1 is located on the bottom wall of the accommodating cavity 11, and the second fixing portion D2 is located on the surface of the cover assembly 20 facing the accommodating cavity 11. The first fixing portion D1 and the second fixing portion D2 are arranged opposite each other along the through-hole 31. The first fixing portion D1 and the second fixing portion D2 connect the elastic connector along the through-hole 31. This prevents interference between the elastic connector and the actuator assembly 30 during relative movement, thereby enabling the drain mechanism 72 to reliably perform its draining function.

[0177] Specifically, in FIG3B , the liquid inlet portion 12 may include two spaced-apart liquid inlets 121, with the first fixed portion D1 serving as a dividing strip separating the two liquid inlets 121. A first hook is provided on one end of the elastic connector, proximate to the first fixed portion D1, and the first hook engages the dividing strip to connect the valve body 10 to the elastic connector. Liquid can be introduced not only through the two spaced-apart liquid inlets 121, but also by utilizing the dividing strip between the two liquid inlets 121 to connect to the first hook at the end of the elastic connector. This facilitates installation of the elastic connector while also ensuring liquid inlet to the valve body 10.

[0178] In Figures 3B and 3G , the cover assembly 20 has a second fixing portion D2 protruding from the surface facing the accommodating cavity 11. The elastic connector has a second hook at one end near the second fixing portion D2. The second fixing portion D2 has a hooking hole, which engages the hooking hole to connect the cover assembly 20 to the elastic connector. The hook provided on the protrusion of the cover assembly 20 connects to the second hook at the end of the elastic connector, facilitating installation of the elastic connector.

[0179] To facilitate installation of the drain mechanism 72 in an area requiring drainage, such as the bottom of a battery compartment, with reference to Figures 2, 3A, 3B, and 3L, in some embodiments, the drain mechanism 72 further includes a fixing member 60. The fixing member 60 is used to secure the valve body 10 to a target component. The target component may be the bottom plate of the battery compartment. By securing the valve body 10 to the target component via the fixing member 60, the valve body 10 can more reliably perform its drainage function at the target component's location.

[0180] Referring to Figures 3B and 3L, in some embodiments, the outer wall of the valve body 10 includes a threaded segment 14 extending along a first direction (which may be direction z). The fixing member 60 includes a fixing nut having an internal thread 61, which is used to be screwed to the outer wall and to form a clamping space together with the mating portion 15. This threaded connection method is very convenient and quick to assemble and disassemble, and can be adapted to target parts of different thicknesses. It is also easy to monitor the torque during the installation process, thereby improving the reliability of the fixed connection. In other embodiments, the valve body 10 can also be installed with the target part in other ways, including omitting the fixing member 60. For example, a structure that can be snapped or threadedly connected to the target part is provided on the outer wall of the valve body 10.

[0181] In FIG3L , the circumferential sidewall of the fixing member 60 may have a water inlet notch 62, and the liquid inlet portion 12 includes a liquid inlet hole 122 provided on the wall of the accommodating chamber 11, and the liquid inlet hole 122 is connected to the water inlet notch 62. Thus, when the valve body 10 is fixed to the fixing member 60, a water inlet notch 62 is provided on the circumferential sidewall of the fixing member 60, which is connected to the liquid inlet hole 122 on the wall of the accommodating chamber 11. Thus, when the fixing member 60 is fixed to the target part, liquid flowing toward the fixing member 60 can flow into the accommodating chamber 11 through the water inlet notch 62 and the liquid inlet hole 122, making the drainage process smoother. In FIG3D , the edges of the liquid inlet hole 122 may be rounded to prevent the edges from being too sharp and affecting the inflow and outflow of liquid.

[0182] Referring to Figures 3B-3D , in some embodiments, the outer wall of the valve body 10 may further include a mating portion 15 extending along a plane perpendicular to the first direction to a predetermined dimension. The mating portion 15 is located at one end of the threaded section 14 in the screwing direction. The mating portion 15 may include a second groove 151, within which a second elastic seal 52 is disposed. When the retaining nut is screwed into place, the second elastic seal 52 improves the seal between the valve body 10 and the target component.

[0183] 3B , the opening portion 13 may include a first groove 131, in which a first elastic seal 51 is disposed. When the actuating assembly 30 is not actuated, at least a portion of the capping assembly 20 is located in the first groove 131. When the actuating assembly 30 is not actuated, at least a portion of the capping assembly 20 is located in the first groove 131. The first elastic seal 51 in the first groove 131 of the opening portion 13 may improve the sealing between the capping assembly 20 and the opening portion 13.

[0184] Considering that when the drain mechanism 72 is installed, its cover assembly 20 is often located outside the target component and is easily scraped, squeezed, or collided with other external structures, which may cause the drain mechanism 72 to fail. Therefore, in some embodiments, the cover assembly 20 may include an energy-absorbing structure. When the cover assembly 20 is located outside and scrapes, squeezes, or collides with other structures, the energy-absorbing structure provided on the cover assembly 20 can absorb energy, thereby preventing or reducing damage to the drain mechanism 72 and reducing the risk of failure of the drain mechanism 72.

[0185] The energy-absorbing structure can take various forms, including materials capable of absorbing energy. Referring to FIG3B , in some embodiments, the energy-absorbing structure includes a buffer cavity 23 within the cover assembly 20. When the cover assembly 20 is subjected to compression or impact, the buffer cavity 23 deforms to effectively absorb energy. The buffer cavity 23 can be formed by assembling multiple components or by integral manufacturing. The buffer cavity 23 can be filled with air, an energy-absorbing material, or a vacuum.

[0186] 3A , in some embodiments, the cover assembly 20 includes a cover body 21 and a baffle 22. The baffle 22 is disposed on a side of the cover body 21 away from the valve body 10 and is connected to or integrally formed with the cover body 21. A buffer chamber 23 is located between the cover body 21 and the baffle 22. The cover assembly 20 seals the opening 13 through the cover body 21, provides protection to the cover body 21 through the baffle 22, and absorbs energy through the buffer chamber 23 between the baffle 22 and the cover body 21.

[0187] In Figures 3B, 3F, and 3H, the cover body 21 includes a cover plate 211. A first cover plate surface S2 of the cover plate 211, adjacent to the baffle plate 22, has an inner recess 231. A baffle plate surface S3 of the baffle plate 22, adjacent to the cover plate 211, and the inner recess 231 define a buffer cavity 23. The cover plate 211 of the cover body 21, through the inner recess 231 and the baffle plate surface S3, defines the buffer cavity 23. When the baffle plate 22 is squeezed or impacted, it deforms first within the buffer cavity 23, thereby reducing the energy transferred to the baffle plate 22.

[0188] 3D , 3F , and 3G , in some embodiments, the wall of the accommodating cavity 11 is provided with a guide groove 111, and the cover body 21 further includes a guide post 213 protruding toward the accommodating cavity 11. When the cover body 21 is sealed on the opening 13, the guide post 213 cooperates with the guide groove 111 to limit the rotation angle of the cover plate 211 relative to the valve body 10. The cover body 21 includes the cover plate 211 and the guide post 213 protruding toward the accommodating cavity 11. The guide post 213 is capable of sliding within the guide groove 111 on the wall of the accommodating cavity 11, preventing the cover body 21 from rotating within the valve body 10 when the actuating assembly 30 is actuated, thereby preventing the liquid discharge process from being affected.

[0189] The guide posts 213 and the guide grooves 111 can both extend along the direction z. In order to guide the stable movement of the cover body 21, multiple sets of guide posts 213 and guide grooves 111 can be used for guiding cooperation. The multiple sets of guide posts 213 and guide grooves 111 can be arranged at intervals along the circumference of the valve body 10.

[0190] To reduce the manufacturing and processing difficulty of the baffle 22 and to use a harder material to resist external scratches, extrusion, or collisions, in some embodiments, the baffle surface S3 is flat. Accordingly, the material of the baffle 22 can have a higher strength than the material of the cover body 21. Using a higher-strength material to manufacture the baffle 22 can improve the ability of the cover assembly 20 of the discharge mechanism 72 to resist external scratches, extrusion, or collisions. While using a lower-strength material to manufacture the cover body 21 facilitates the formation of more complex structures, such as a cover body 21 including a cover plate 211 having an inner recess 231 and a guide post 213.

[0191] 3B and 3D , in some embodiments, the outer wall 14 of the valve body 10 includes a mating portion 15 extending along a plane perpendicular to the thickness of the baffle 22 to a predetermined dimension. The mating portion 15 includes a first stepped bore section 152 and a second stepped bore section 153. The cross-sectional dimensions of the second stepped bore section 153 are larger than those of the first stepped bore section 152. The cover plate 211 is configured to be at least partially located within the second stepped bore section 153 when the actuating assembly 30 is not actuated. The surface of the second cover plate 211, located on the side of the cover plate 211 adjacent to the actuating assembly 30, seals with a stepped surface 154 between the first and second stepped bore sections 152, 153. The stepped bore accommodates the cover body 21, and the surface of the second cover plate 211 seals with the stepped surface 154, thereby shielding the sealed portion from the second stepped bore section 153, reducing the risk of external impurities entering the sealed portion.

[0192] Referring to Figures 3A, 3B, 3C, 3H, 3J, and 3K, in some embodiments, the baffle plate 22 has drainage holes 221 extending through the thickness of the cover assembly 20. These drainage holes 221 are located circumferentially outside the cover plate 211. By providing drainage holes 221 extending through the baffle plate 22 and distributing them circumferentially outside the cover plate 211, liquid can be discharged through the drainage holes 221 on the baffle plate 22 when the actuator assembly 30 is actuated. In Figure 3C, liquid is discharged from the opening 13 through the drainage holes 221 in the direction z.

[0193] In Figures 3H, 3J, and 3K, a plurality of drainage holes 221 are provided. The plurality of drainage holes 221 are arranged circumferentially and spaced apart on the outer side of the cover plate 211. This allows for more uniform drainage, and even if some of the drainage holes 221 are blocked by impurities, drainage can still be achieved through the other drainage holes 221, ensuring that the drainage function can function normally.

[0194] In order to reduce the blockage and sealing effects of external impurities on the cover assembly 20, with reference to Figures 3A, 3B, and 3I to 3K, in some embodiments, the cover assembly 20 further includes a snap ring 24. The snap ring 24 is disposed on the outer edge of the baffle 22 and is connected to or integrally formed with the baffle 22. In Figures 3B and 3I, the snap ring 24 has a flange 241 that protrudes from the baffle 22 toward the actuator assembly 30. The flange 241 of the snap ring 24 disposed on the outer edge of the baffle 22 can form a shielding effect in the radial direction, thereby reducing the blockage and sealing effects of external impurities on the cover assembly 20 to a certain extent.

[0195] In some embodiments, the flange 241 can be disposed outside the mating portion 15. This can shield the valve body 10 to reduce the possibility of the valve body 10 being hit laterally by external structures, and can also shield some external impurities, reducing the risk of impurities blocking the drainage channel.

[0196] In Figures 3I and 3J , flange 241 has drainage notches 242. The provision of drainage notches 242 on flange 241 enables drainage. Multiple drainage notches 242 may be provided, with multiple drainage notches 242 spaced circumferentially on flange 241. The provision of multiple drainage notches 242 spaced circumferentially around flange 241 allows for uniform drainage in the radial direction. Furthermore, even if some drainage notches 242 are blocked by external impurities, drainage can still be achieved through the remaining drainage notches 242, ensuring proper drainage.

[0197] The plurality of drainage holes 221 on the baffle plate 22 are circumferentially spaced apart on the outer edge of the cover plate 211 and may be circumferentially alternately arranged with the plurality of drainage notches 242. The alternating circumferential arrangement of the plurality of drainage holes 221 extending through the thickness and the plurality of drainage notches 242 on the flange 241 allows for more uniform radial and circumferential drainage of liquid at various circumferential locations.

[0198] 3G , in some embodiments, the cover body 21 includes: a cover plate 211 for covering the opening portion 13 and a core body connected to or integrally formed with the cover plate 211. The core body is located on a side of the cover plate 211 adjacent to the actuating assembly 30, and the core body has a liquid guide groove 214. The surface of the core body of the cover body 21 faces the actuating assembly 30, so that it can abut against the actuating assembly 30 when the actuating assembly 30 is actuated, and move under the push of the actuating assembly 30, and the liquid guide groove 214 provided on the core body can guide the liquid entering the accommodating chamber 11 to be discharged outward through the drainage channel between the cover plate 211 and the opening portion 13.

[0199] In Figure 3G, the core includes multiple sub-cores 212, each of which forms adjacent liquid-conducting grooves 214. The gaps between adjacent sub-cores 212 can form multiple liquid-conducting grooves 214 in the form of flow channels, enabling uniform liquid drainage. The multiple sub-cores 212 can be distributed outside the second fixing portion D2 of the cover plate 211, where the elastic connector is mounted, and spaced apart circumferentially. Each sub-core 212 can be fan-shaped, with an annular groove on the side adjacent to the second fixing portion D2 providing communication between the liquid-conducting grooves 214.

[0200] Figure 4A is a schematic diagram of the exploded structure of the second embodiment of the liquid discharge mechanism according to the present disclosure. Figures 4B and 4C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in Figure 4A from different perspectives. Figure 4D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in Figure 4A in an unopened state.

[0201] Compared with the first embodiment of the liquid discharge mechanism disclosed herein, referring to Figures 4A to 4D, the elastic connector of the second embodiment also includes a tension spring 41. The tension spring 41 can be arranged on the outside of the valve body 10, and the tension spring 41 can be configured as a plurality so as to apply a more balanced tension to the cover assembly 20. In Figure 4D, the cover assembly 20 is provided with a second fixing portion D2, and the valve body 10 is provided with a through hole on the mating portion 15 formed by extending a preset size along a plane perpendicular to the direction z, so as to allow the second fixing portion D2 to pass through. The valve body 10 is provided with a first fixing portion D1 extending outward at one end away from the opening. The two ends of the tension spring 41 can be connected to the first fixing portion D1 and the second fixing portion D2 respectively, so that the cover assembly 20 can stably maintain the state of the opening of the cover valve body 10 when the actuating assembly 30 is not actuated. In addition, the second fixing portion 20 also achieves guidance and anti-rotation of the cover assembly 20 by cooperating with the through hole on the mating portion 15.

[0202] In Figures 4A and 4D , the accommodating cavity of the valve body 10 may further include a positioning post 16, which may be inserted through a through-hole defined in the actuating assembly 30. The mating portion 15 may have grooves at both ends for mounting a first elastic seal 51 and a second elastic seal 52, respectively, to form a seal between the valve body 10 and the cover assembly 20, and between the valve body 10 and the target component to which the drain mechanism is mounted. For other structural features, refer to the first embodiment described above and will not be further described here.

[0203] Figure 5A is a schematic diagram of the exploded structure of the third embodiment of the liquid discharge mechanism according to the present disclosure. Figures 5B and 5C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in Figure 5A from different perspectives. Figure 5D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in Figure 5A in an unopened state.

[0204] Compared with the second embodiment of the drainage mechanism disclosed in the present invention, referring to Figures 5A to 5D, the tension spring 41 of the third embodiment is located in the accommodating cavity of the valve body 10, and can be located between the outer wall of the actuating assembly 30 and the inner wall of the accommodating cavity. This can reduce the space occupied by the drainage mechanism 72 and reduce the risk of interference with the elastic connector by other structures outside the drainage mechanism 72. The tension spring 41 can be configured in multiple numbers so as to apply a more balanced tension to the cover assembly 20. Accordingly, the two ends of the tension spring 41 are respectively connected between the inner wall of the accommodating cavity of the valve body 10 and the surface of the cover assembly 20 adjacent to the valve body. An annular groove is provided on the fitting portion 15 formed by extending the valve body 10 along a plane perpendicular to the direction z to form a preset size, and the cover assembly 20 is embedded in the annular groove.

[0205] In Figures 5A and 5D , the accommodating cavity of the valve body 10 may further include a positioning post 16, which may be inserted through a through-hole defined in the actuating assembly 30. Grooves may be provided at each end of the mating portion 15 for mounting a first elastic seal 51 and a second elastic seal 52, respectively, to form a seal between the valve body 10 and the cover assembly 20, and between the valve body 10 and the target component to which the drain mechanism is mounted. For other structural features, refer to the first embodiment described above and will not be further described here.

[0206] Figure 6A is a schematic diagram of the exploded structure of the fourth embodiment of the liquid discharge mechanism according to the present disclosure. Figures 6B and 6C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in Figure 6A from different perspectives. Figure 6D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in Figure 6A in an unopened state.

[0207] Compared to the first embodiment of the liquid discharge mechanism of the present disclosure, referring to Figures 6A-6D , the elastic connector of the fourth embodiment is configured as a compression spring 42. The valve body 10 includes a first pressing portion C1, and the cover assembly 20 includes a second pressing portion C2. The first pressing portion C1 and the second pressing portion C2 are respectively located at opposite ends of the elastic connector. When the cover assembly 20 is separated from the opening 13, the second pressing portion C2 moves toward the first pressing portion C1 and compresses the elastic connector.

[0208] A compression spring 42 is arranged between the first pressing portion C1 of the valve body 10 and the second pressing portion C2 of the cover assembly 20. The compression spring 42 can stably press the cover assembly 20 against the opening portion 13 of the valve body 10 through elastic force, and is compressed when the cover assembly 20 is separated from the opening portion 13. The elastic force after compression can quickly reset the cover assembly 20 when the actuating assembly 30 is not actuated.

[0209] In FIG6D , the second pressing portion C2 may include a pressing plate C21 and a limiting rod C22. The first pressing portion C1 includes a mounting hole C11, the pressing plate C21 is connected to the limiting rod C22, and the limiting rod C22 is movably inserted into the mounting hole C11. An elastic connector is sleeved on the limiting rod C22 and is sandwiched between the pressing plate C21 and the second pressing portion C2. The first pressing portion C1 includes the pressing plate C21 and the limiting rod C22 that passes through the mounting hole C11 on the second pressing portion C2. A compression spring 42 is sleeved on the limiting rod C22 and is sandwiched between the pressing plate C21 and the second pressing portion C2. In this way, when the second pressing portion C2 and the pressing plate C21 move toward each other, the length of the elastic connector is compressed, and the elastic connector causes the second pressing portion C2 and the pressing plate C21 to move away from each other, thereby achieving rapid reset of the cover assembly 20.

[0210] To facilitate assembly of the drain mechanism 72, referring to FIG6D , in some embodiments, the cap assembly 20 further includes a cap body 21, and the limiting rod C12 is detachably connected to the cap body 21, for example, by threading the limiting rod C12 to the cap body 21. The cap assembly 20 employs a detachable structure comprising the cap body 21 and the limiting rod C12, allowing the cap body 21 and the limiting rod C12 to be manufactured separately and then assembled, thereby reducing manufacturing complexity and facilitating component replacement and repair.

[0211] The valve body 10, extending along a plane perpendicular to the z-axis to a predetermined dimension, has an annular groove formed on its mating portion 15. The cover assembly 20 is inserted into the annular groove. In Figures 6A and 6D, grooves are provided at each end of the mating portion 15 for mounting a first elastic seal 51 and a second elastic seal 52, respectively. This creates a seal between the valve body 10 and the cover assembly 20, and between the valve body 10 and the target component to which the liquid discharge mechanism is mounted. For other structural features, refer to the first embodiment described above and will not be further described here.

[0212] Figure 7A is a schematic diagram of the exploded structure of the fifth embodiment of the liquid discharge mechanism according to the present disclosure. Figures 7B and 7C are three-dimensional schematic diagrams of the mounting structure of the embodiment shown in Figure 7A from different perspectives. Figure 7D is a cross-sectional schematic diagram of the mounting structure of the embodiment shown in Figure 7A in an unopened state.

[0213] Compared to the first embodiment of the drainage mechanism disclosed herein, as shown in Figures 7A-7D , the elastic connector includes a disc spring 43. Disc spring 43 maintains sufficient elastic force while occupying less space, enabling a smaller drainage mechanism 72. The disc spring 43 is located within the accommodating cavity 11, effectively reducing the space occupied by the drainage mechanism 72 and minimizing the risk of interference with the elastic connector from other structures external to the drainage mechanism 72.

[0214] In Figure 7D, the valve body 10 includes a limiting protrusion 112 provided on the wall of the accommodating chamber 11, and a disc spring 43 is sandwiched between the limiting protrusion 112 and the cover assembly 20. The disc spring 43 can provide a reliable and stable elastic force between the valve body 10 and the cover assembly 20 while occupying less space.

[0215] The valve body 10 is formed by extending a predetermined dimension along a plane perpendicular to the z direction, and an annular groove is provided on the mating portion 15. The cover assembly 20 is embedded in the annular groove. In Figures 5A and 5D, the accommodating cavity of the valve body 10 can also be provided with a positioning post 16, which can pass through a through hole provided in the actuating assembly 30. Grooves can be provided at both ends of the mating portion 15 for mounting a first elastic seal 51 and a second elastic seal 52, respectively, to form a sealed fit between the valve body 10 and the cover assembly 20, and between the valve body 10 and the target component for mounting the liquid discharge mechanism. For other structures, please refer to the first embodiment described above and will not be described in detail here.

[0216] In other embodiments, the elastic connector includes a disc spring 43, the valve body 10 includes a first limiting protrusion and a second limiting protrusion spaced apart from each other on the wall of the accommodating chamber 11, and the elastic connector is sandwiched between the first and second limiting protrusions. The first and second limiting protrusions spaced apart from each other can stably retain the disc spring, allowing the elastic connector to reliably provide an elastic force. This can ensure that the elastic force is met while occupying a smaller space, thereby enabling a smaller-sized liquid discharge mechanism.

[0217] The cover body 21 of the cover assembly 20 may include an extension section and a hook section. The extension section extends from the cover body 21 toward the accommodating cavity 11. The hook section is located on the extension section and is used to abut the end surface of the elastic connector facing away from the opening 13. The hook section can stably abut the end surface of the elastic connector through the elasticity of the extension section, facilitating assembly.

[0218] The structure of an embodiment of a liquid discharge mechanism will be described below with reference to FIG. 3A to FIG. 3L .

[0219] In Figure 3A , the liquid discharge mechanism 72 includes a valve body 10, a cover assembly 20, an actuator assembly 30, a tension spring 41, a first elastic seal 51, a second elastic seal 52, and a fixing member 60. In Figures 3B and 3D , the valve body 10 is configured with a accommodating chamber 11, a liquid inlet portion 12, and an opening 13. Both the liquid inlet portion 12 and the opening 13 are connected to the accommodating chamber 11. The liquid inlet portion 12 includes a liquid inlet hole 122 provided on the wall of the accommodating chamber 11 and two spaced-apart liquid inlet ports 121. The cover assembly 20 is movably disposed at the opening 13 along the direction z.

[0220] In Figures 3B and 3E , the actuator assembly 30 is disposed within the accommodating chamber 11 and is capable of absorbing liquid and expanding. The actuator assembly 30 comprises multiple sheet-shaped deformable members 32, stacked along their thickness. Each deformable member 32 has a through hole 31 extending from the liquid inlet 121 to the opening 13, as well as multiple grooves 33 formed around the deformable member 32.

[0221] In Figures 3B, 3G, and 3J, the elastic connector is located within the accommodating cavity 11 and extends through the through hole 31. The valve body 10 includes a first fixing portion D1 located on the bottom wall of the accommodating cavity 11, and the cover assembly 20 includes a second fixing portion D2 disposed opposite the first fixing portion D1. The ends of the elastic connector are respectively connected to the first fixing portion D1 and the second fixing portion D2. When the cover assembly 20 is separated from the opening 13, the second fixing portion D2 can move away from the first fixing portion D1, thereby stretching the elastic connector.

[0222] The first fixing portion D1 is configured as a partition strip that separates the two liquid inlets 121 . A first hook is provided at one end of the elastic connector close to the first fixing portion D1 . The first hook hooks the partition strip to connect the valve body 10 and the elastic connector.

[0223] The cover assembly 20 protrudes on the surface facing the accommodating cavity 11 to form a second fixing portion D2, and the elastic connector is provided with a second hook at one end close to the second fixing portion D2. The second fixing portion D2 is provided with a hanging hole, and the second hook hooks the hanging hole to connect the cover assembly 20 and the elastic connector.

[0224] In Figures 3B and 3L , a fixing member 60 is used to secure the valve body 10 to a target object (e.g., the bottom plate of a battery compartment). The outer wall of the valve body 10 includes a threaded segment 14 extending in a first direction and a mating portion 15 extending along a plane perpendicular to the first direction and having a predetermined dimension. The mating portion 15 is located at one end of the threaded segment 14 in the screwing direction. The fixing member 60 includes a fixing nut that is threadably locked to the outer wall and, together with the mating portion 15, forms a clamping space. The circumferential sidewall of the fixing member 60 defines a water inlet notch 62, with the liquid inlet hole 122 communicating with the water inlet notch 62.

[0225] In Figures 3B and 3F-3K, the cover assembly 20 includes: a cover body 21 and a baffle 22. The baffle 22 is arranged on a side of the cover body 21 away from the valve body 10 and is connected to the cover body 21. A buffer chamber 23 is formed between the cover body 21 and the baffle 22. The cover body 21 includes a cover plate 211. A first cover plate surface S2 on a side of the cover plate 211 adjacent to the baffle 22 has an inner recess 231. The baffle surface S3 is flat, and the material of the baffle 22 has higher strength than the material of the cover body 21.

[0226] In Figure 3J, the cavity wall of the accommodating cavity 11 is provided with a guide groove 111, and the cover body 21 also includes a guide column 213 protruding toward the accommodating cavity 11. When the cover body 21 covers the opening 13, the guide column 213 cooperates with the guide groove 111 to limit the rotation angle of the cover plate 211 relative to the valve body 10.

[0227] In Figures 3B and 3D , the outer wall 14 of the valve body 10 includes a mating portion 15 extending along a plane perpendicular to the thickness of the baffle 22 to a predetermined dimension. The mating portion 15 comprises a first stepped bore section 152 and a second stepped bore section 153. The cross-sectional dimensions of the second stepped bore section 153 are larger than those of the first stepped bore section 152. The cover plate 211 is configured to be at least partially located within the second stepped bore section 153 when the actuating assembly 30 is not actuated. The surface of the second cover plate 211 on the side of the cover plate 211 adjacent to the actuating assembly 30 seals against the stepped surface 154 between the first and second stepped bore sections 152, 153 via a first elastic sealing ring 51. When the valve body 10 is connected to a fixed portion, the mating portion 15 seals against the target component via a second elastic sealing ring 52.

[0228] In FIG3J , the baffle 22 has a plurality of drainage holes 221 extending through the thickness of the cover assembly 20. The plurality of drainage holes 221 are circumferentially spaced apart on the outer side of the cover plate 211. The cover assembly 20 also includes a retaining ring 24 disposed on the outer edge of the baffle 22. The retaining ring 24 has a flange 241 that protrudes from the baffle 22 toward the actuating assembly 30. The flange 241 is located outside the mating portion 15. The flange 241 has a plurality of drainage notches 242, which are circumferentially spaced apart on the flange 241. The plurality of drainage holes 221 and the plurality of drainage notches 242 are circumferentially arranged alternately.

[0229] 3G and 3J , the cover body 21 further comprises a core body connected to the cover plate 211 and located on a side of the cover plate 211 adjacent to the actuating assembly 30, and the core body has a liquid guide groove 214. The core body comprises a plurality of sub-cores 212, which are adjacent to each other to form the liquid guide groove 214.

[0230] Based on the various embodiments of the aforementioned drain mechanism disclosed herein, the present disclosure further provides a battery case employing the aforementioned drain mechanism embodiments. The battery case further includes a housing for housing the battery cells. The drain mechanism is located at the lower portion of the housing. By locating the drain mechanism at the lower portion of the housing, the liquid within the housing can flow to the lower portion of the housing under the action of gravity, thereby rapidly draining the liquid within the housing.

[0231] Based on the various embodiments of the aforementioned drain mechanism or battery case disclosed herein, the present disclosure also provides a battery utilizing the aforementioned drain mechanism or battery case. This improves the reliability and safety of the battery. The battery may further include battery cells and a thermal management component disposed within the case. The thermal management component is configured to exchange heat with the battery cells. Liquid generated or leaked by the thermal management component within the case during use can be quickly drained via the drain mechanism.

[0232] In some embodiments, multiple thermal management components are provided. When multiple thermal management components are provided in the battery case, each thermal management component has multiple joints when installed and connected. The drainage mechanism can discharge liquid working fluid leaking from the joints to the outside of the battery, thereby improving the reliability and safety of the battery.

[0233] The battery cell has a terminal, which is located at the bottom or side of the battery cell. In the case where the battery cell terminal is located at the bottom or side of the battery cell, the drainage mechanism can quickly drain the liquid, reducing the risk of liquid contacting the terminal and causing a short circuit.

[0234] In one aspect of the present disclosure, an electrical device is provided, comprising the aforementioned battery. The electrical device using the aforementioned battery can achieve better reliability and safety.

[0235] While the present disclosure has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present disclosure is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A liquid discharge mechanism (72), comprising: A valve body (10), the valve body (10) being constructed with a receiving chamber (11), a liquid inlet portion (12) and an opening portion (13), the liquid inlet portion (12) and the opening portion (13) both being connected to the receiving chamber (11); a cover assembly (20) movably disposed at the opening (13); and An actuating assembly (30) is disposed in the accommodating chamber (11), and the actuating assembly (30) is configured to actuate in response to liquid entering the accommodating chamber (11) through the liquid inlet portion (12), so as to move the sealing assembly (20) to at least partially open the opening portion (13).

2. The liquid discharge mechanism (72) according to claim 1, wherein: The cover assembly (20) includes an action surface (S1), and the actuating assembly (30) is configured to push the action surface (S1) after actuation, so as to move the cover assembly (20) to at least partially open the opening (13).

3. The liquid discharge mechanism (72) according to claim 2, wherein: The actuating assembly (30) is configured to push the action surface (S1) after actuation, so as to move the cover assembly (20) in a direction away from the opening (13).

4. The liquid discharge mechanism (72) according to any one of claims 1 to 3, wherein: The actuating assembly (30) includes a deformable member (32), and the deformable member (32) is configured to expand and deform after contacting liquid.

5. The liquid discharge mechanism (72) according to claim 4, wherein: The deformable member (32) is configured to absorb liquid and expand.

6. The liquid discharge mechanism (72) according to any one of claims 4 to 5, wherein: The deformable member (32) includes a groove (33) and / or a through hole (31) communicating from the liquid inlet portion (12) to the opening portion (13).

7. The liquid discharge mechanism (72) according to any one of claims 4 to 6, wherein: The deformable members (32) are configured in a plurality and are in a sheet shape, and the plurality of sheet-shaped deformable members (32) are stacked along the thickness direction thereof.

8. The liquid discharge mechanism (72) according to any one of claims 4 to 7, wherein: The deformable member (32) comprises electrical paperboard.

9. The liquid discharge mechanism (72) according to any one of claims 4 to 7, wherein: The volume of alcohol liquid that the deformable member (32) can absorb per unit volume is a first absorption amount, and the volume of water that the deformable member (32) can absorb per unit volume is a second absorption amount, and the first absorption amount is greater than the second absorption amount.

10. The liquid discharge mechanism (72) according to any one of claims 4 to 7 and 9, wherein: The volume change rate generated by the deformable member (32) absorbing a unit volume of alcohol liquid is a first volume deformation rate, and the volume deformation rate generated by the deformable member (32) absorbing a unit volume of water is a second volume deformation rate, and the first volume deformation rate is greater than the second volume deformation rate.

11. The liquid discharge mechanism (72) according to any one of claims 1 to 10, further comprising a connecting structure, wherein the connecting structure connects the valve body (10) and the sealing assembly (20), and the connecting structure is used to enable the sealing assembly (20) to keep sealing the opening portion (13) when the actuating assembly (30) is not actuated.

12. The liquid discharge mechanism (72) according to claim 11, wherein: The connection structure comprises an elastic connection member, and the elastic connection member is configured to undergo elastic deformation when the cover assembly (20) opens the opening portion (13).

13. The liquid discharge mechanism (72) according to claim 12, wherein: The elastic connecting member is configured as a compression spring (42), the valve body (10) includes a first pressing portion (C1), and the cover assembly (20) includes a second pressing portion (C2), the first pressing portion (C1) and the second pressing portion (C2) are respectively located at two ends of the elastic connecting member, and the cover assembly (20) is configured to move the second pressing portion (C2) toward the first pressing portion (C1) and compress the elastic connecting member when it is detached from the opening portion (13).

14. The liquid discharge mechanism (72) according to claim 13, wherein: The second pressing portion (C2) includes a pressing plate (C21) and a limiting rod (C22); the first pressing portion (C1) includes a mounting hole (C11); the pressing plate (C21) is connected to the limiting rod (C22); the limiting rod (C22) is movably inserted into the mounting hole (C11); the elastic connecting piece is sleeved on the limiting rod (C22) and is clamped between the pressing plate (C21) and the second pressing portion (C2).

15. The liquid discharge mechanism (72) according to claim 14, wherein: The cover assembly (20) further comprises a cover body (21), and the limiting rod (C12) is detachably connected to the cover body (21).

16. The liquid discharge mechanism (72) according to claim 12, wherein: The elastic connecting piece is located in the accommodating cavity (11).

17. The liquid discharge mechanism (72) according to claim 16, wherein: The elastic connecting member includes a disc spring (43), the valve body (10) includes a limiting protrusion (112) spaced apart on the wall of the accommodating cavity (11), and the elastic connecting member is clamped between the limiting protrusion (112) and the cover assembly (20).

18. The liquid discharge mechanism (72) according to claim 16, wherein: The elastic connecting member includes a disc spring (43), the valve body (10) includes a first limiting protrusion and a second limiting protrusion spaced apart on the cavity wall of the accommodating cavity (11), and the elastic connecting member is sandwiched between the first limiting protrusion and the second limiting protrusion.

19. The liquid discharge mechanism (72) according to claim 18, wherein: The cover assembly (20) further comprises a cover body (21), the cover body (21) having an extension section and a hook section, the extension section extending from the cover body (21) toward the accommodating cavity (11), the hook section being located on the extension section and being used to abut against the end face of the elastic connector facing away from the opening portion (13).

20. The drain mechanism (72) according to claim 12, wherein: The elastic connector includes a tension spring (41), the valve body (10) includes a first fixing portion (D1), and the cover assembly (20) includes a second fixing portion (D2). Both ends of the elastic connector are respectively connected to the first fixing portion (D1) and the second fixing portion (D2). When the cover assembly (20) is detached from the opening portion (13), the second fixing portion (D2) can move in a direction away from the first fixing portion (D1) and stretch the elastic connector.

21. The liquid discharge mechanism (72) according to claim 20, wherein: The elastic connecting member is located in the accommodating cavity (11), the actuating assembly (30) is provided with a through hole (31), and the elastic connecting member is passed through the through hole (31).

22. The liquid discharge mechanism (72) according to claim 20 or 21, wherein: The first fixing portion (D1) is located on the bottom wall of the accommodating cavity (11), and the second fixing portion (D2) is located on the surface of the cover assembly (20) facing the accommodating cavity (11). Along the through direction of the through hole (31), the first fixing portion (D1) and the second fixing portion (D2) are arranged opposite to each other.

23. The liquid discharge mechanism (72) according to any one of claims 20 to 22, wherein: The liquid inlet portion (12) includes two liquid inlets (121) spaced apart from each other, the first fixed portion (D1) is configured as a partition strip separating the two liquid inlets (121), and a first hook is provided at one end of the elastic connecting member close to the first fixed portion (D1), and the first hook hooks the partition strip to connect the valve body (10) and the elastic connecting member.

24. The drain mechanism (72) according to claim 23, wherein: The cover assembly (20) protrudes on the surface facing the accommodating cavity (11) to form the second fixing portion (D2), and the elastic connector is provided with a second hook at one end close to the second fixing portion (D2), and the second fixing portion (D2) is provided with a hanging hole, and the second hook hooks the hanging hole to connect the cover assembly (20) and the elastic connector.

25. The liquid discharge mechanism (72) according to any one of claims 1 to 24, further comprising a fixing member (60), wherein the fixing member (60) is used to fix the valve body (10) to a target member.

26. The drain mechanism (72) according to claim 25, wherein: The outer wall of the valve body (10) includes a threaded section (14) extending along a first direction, and a fitting portion (15) formed by extending a preset size along a plane perpendicular to the first direction, wherein the fitting portion (15) is located at one end of the threaded section (14) in the screwing direction, and the fixing member (60) includes a fixing nut, which is used to be locked to the outer wall through the thread and to form a clamping space together with the fitting portion (15).

27. The liquid discharge mechanism (72) according to any one of claims 1 to 26, wherein: The opening portion (13) includes a first groove (131), a first elastic sealing member (51) is provided in the first groove (131), and at least a portion of the cover assembly (20) is located in the first groove (131) when the actuating assembly (30) is not actuated.

28. The liquid discharge mechanism (72) according to any one of claims 1 to 27, wherein: The sealing cover assembly (20) has an energy absorbing structure.

29. The drain mechanism (72) according to claim 28, wherein: The energy absorbing structure includes a buffer cavity (23) located in the cover assembly (20).

30. The drain mechanism (72) according to claim 29, wherein: The cover assembly (20) comprises: a cover body (21) and a baffle (22), wherein the baffle (22) is arranged on a side of the cover body (21) away from the valve body (10) and is connected to or integrally formed with the cover body (21); Wherein, the buffer cavity (23) is located between the cover body (21) and the baffle (22).

31. The liquid discharge mechanism (72) according to claim 30, wherein: The cover body (21) comprises: a cover plate (211), wherein a first cover plate surface (S2) of the cover plate (211) adjacent to the baffle (22) has an inner recess (231); The baffle surface (S3) of the baffle (22) adjacent to the cover plate (211) and the inner recess (231) form the buffer cavity (23).

32. The drain mechanism (72) according to claim 31, wherein: The cavity wall of the accommodating cavity (11) is provided with a guide groove (111), and the cover body (21) further includes a guide column (213) protruding toward the accommodating cavity (11). When the cover body (21) covers the opening (13), the guide column (213) cooperates with the guide groove (111) to limit the rotation angle of the cover plate (211) relative to the valve body (10).

33. The liquid discharge mechanism (72) according to any one of claims 31-32, wherein: The baffle surface (S3) is flat.

34. The drainage mechanism (72) according to any one of claims 30 to 33, wherein: The material of the baffle (22) has higher strength than the material of the cover body (21).

35. The drainage mechanism (72) according to any one of claims 31 to 34, wherein: The outer wall (14) of the valve body (10) includes a mating portion (15) formed by extending a preset size along a plane perpendicular to the thickness direction of the baffle (22), and the mating portion (15) includes a first stepped hole section (152) and a second stepped hole section (153), wherein the cross-sectional dimension of the second stepped hole section (153) is larger than the cross-sectional dimension of the first stepped hole section (152), and the cover plate (211) is configured to be at least partially located in the second stepped hole section (153) when the actuating assembly (30) is not actuated, and the surface of the second cover plate (211) on the side of the cover plate (211) adjacent to the actuating assembly (30) is sealed with the step surface (154) between the first stepped hole section (152) and the second stepped hole section (153).

36. The drain mechanism (72) according to claim 35, wherein: The baffle (22) has a drainage hole (221) that penetrates along the thickness direction of the cover assembly (20), and the drainage hole (221) is located on the circumferential outside of the cover plate (211).

37. The drain mechanism (72) according to claim 36, wherein: A plurality of drainage holes (221) are provided, and the plurality of drainage holes (221) are arranged at intervals along the circumferential direction on the circumferential outer side of the cover plate (211).

38. The drainage mechanism (72) according to any one of claims 30 to 37, wherein: The cover assembly (20) further comprises: a snap ring (24), which is arranged on the outer edge of the baffle (22) and is connected to or integrally formed with the baffle (22); The clamping ring (24) has a flange (241) protruding from the baffle (22) in the direction of the actuating assembly (30).

39. The drain mechanism (72) according to claim 38, wherein: The outer wall (14) of the valve body (10) includes a fitting portion (15) formed by extending a preset size along a plane perpendicular to the thickness direction of the baffle (22), and the flange (241) is located outside the fitting portion (15).

40. The drain mechanism (72) according to claim 39, wherein: The protruding edge (241) has a drainage notch (242).

41. The liquid discharge mechanism (72) according to claim 40, wherein: A plurality of the drainage notches (242) are provided, and the plurality of drainage notches (242) are arranged on the flange (241) at intervals along the circumferential direction.

42. The liquid discharge mechanism (72) according to claim 41, wherein: The baffle (22) has a plurality of drainage holes (221) extending through the baffle (22) in a thickness direction; the plurality of drainage holes (221) are arranged at intervals along the circumferential direction on the outer edge of the cover plate (211), and are alternately arranged with the plurality of drainage notches (242) in the circumferential direction.

43. The drainage mechanism (72) according to any one of claims 30 to 42, wherein: The cover body (21) comprises: a cover plate (211) for covering the opening (13); and The core body is connected to or integrally formed with the cover plate (211) and is located on a side of the cover plate (211) adjacent to the actuating assembly (30), and the core body has a liquid guide groove (214).

44. The drain mechanism (72) according to claim 43, wherein: The core body includes a plurality of sub-core bodies (212), and the plurality of sub-core bodies (212) are adjacent to each other to form the liquid-conducting groove (214).

45. The liquid discharge mechanism (72) according to any one of claims 1 to 44, further comprising a fixing member (60), wherein the fixing member (60) is used to fix the valve body (10) to a target member; in, The circumferential side wall of the fixing member (60) has a water inlet notch (62), and the liquid inlet portion (12) includes a liquid inlet hole (122) arranged on the cavity wall of the accommodating cavity (11), and the liquid inlet hole (122) is connected to the water inlet notch (62).

46. ​​A battery box (70), comprising: A box (71) for accommodating a battery cell (81); and The liquid discharge mechanism (72) according to any one of claims 1 to 45 is located at the lower part of the box body (71).

47. A battery (80) comprising: The liquid discharge mechanism (72) according to any one of claims 1 to 45; or The battery box (70) according to any one of claims 46.

48. The battery (80) of claim 47, further comprising: A battery cell (81) is disposed in the box (71); and A heat management component (82) is arranged in the box (71) and is used for heat exchange with the battery cell (81).

49. The battery (80) according to claim 48, wherein The heat management member (82) is provided in plurality.

50. The battery (80) according to claim 48 or 49, wherein The battery cell (81) has a pole, and the pole is located at the bottom or side of the battery cell (81).

51. An electrical device comprising: The battery (80) according to any one of claims 47 to 50, wherein the battery (80) is used to provide electrical energy.

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