CN218939860U - Battery and electricity utilization device - Google Patents

Abstract

The application discloses battery and power consumption device, this battery include upper cover, lock attach the subassembly, lower box and sealing member, lower box passes through lock attach the subassembly with the upper cover is connected, just lower box is equipped with the spacing groove, the spacing groove is located lock attach the inboard of subassembly, the sealing member set up in the spacing groove, just the sealing member compressed in the upper cover with between the spacing groove diapire. This application sets up in the inboard of lock attaching assembly through the spacing groove, sets up the sealing member in the spacing inslot again, promptly, sets up the sealing member in the inboard of lock attaching assembly, when carrying out IPX9K test to this battery, can directly block high-pressure rivers through lower box outside section bar wall to the protection sealing member, and then can effectively pass through the IPX9K test.

Description

Battery and electricity utilization device

Technical Field

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

Background

The existing battery generally comprises an upper cover, a lower box body, a battery module and a sealing gasket, wherein the upper cover is fixedly connected with the lower box body, the sealing gasket is arranged at the joint of the upper cover and the lower box body, so that the upper cover and the lower box body form a sealed accommodating cavity, and the battery module is arranged in the sealed accommodating cavity formed by the upper cover and the lower box body.

However, the sealing structure of the upper cover and the lower box of the existing battery pack can enable the sealing gasket to be directly exposed to the extension, so that the test of IPX9K (high-temperature high-pressure spraying test) cannot be effectively passed, when the high-pressure water gun is aligned with the edge of the sealing gasket to wash, the sealing gasket can be extruded to the inner side of the box, and the sealing failure is easy to occur.

Disclosure of Invention

In view of the above, the application provides a battery and an electric device, which can directly block high-pressure water flow through the profile wall at the outer side of the lower box body, and further protect a sealing element so as to ensure that the IPX9K test can be effectively passed.

In a first aspect, the present application provides a battery comprising:

an upper cover;

a locking assembly;

the lower box body is connected with the upper cover through the locking assembly, and is provided with a limiting groove which is positioned at the inner side of the locking assembly;

the sealing piece is arranged in the limiting groove, and is compressed between the upper cover and the bottom wall of the limiting groove.

According to the embodiment, the sealing element is arranged on the inner side of the locking assembly, so that when the battery is subjected to IPX9K test, high-pressure water flow is directly blocked through the profile wall on the outer side of the lower box body, and the sealing element is further protected, so that the battery can pass the IPX9K test effectively; meanwhile, the sealing piece does not need to cover two sides of the locking assembly, the width of the sealing piece can be set smaller, waste of materials is avoided, the sealing piece does not need to be provided with an avoidance hole, the process is simple, and in addition, the phenomenon that the torque of a bolt is attenuated due to the fact that the sealing piece is clamped with glue can be avoided.

In some embodiments, the compression amount of the sealing element compressed by the upper cover and the bottom wall of the limiting groove is 20% -80%, wherein the compression amount refers to the ratio of the compressed height of the sealing element to the height of the sealing element in a natural state. The embodiment ensures that the compression amount of the sealing element is 20-80 percent so as to ensure the sealing effect and the installation effect of the upper cover and the lower box body. Because, if the compression amount of the sealing member compressed is less than 20%, the elastic force of the sealing member is applied to the upper cover and the lower case, which affects the installation effect of the upper cover and the lower case, and if the compression amount of the sealing member compressed is more than 80%, the sealing effect of the upper cover and the lower case may be affected.

In some embodiments, the width of the seal is equal to or less than the width of the limit groove. The width of the sealing element is set to be equal to or smaller than the width of the limit groove, so that the sealing element can be installed conveniently. Because, if the width of the sealing member is greater than the width of the limiting groove, it may be difficult to install the sealing member into the limiting groove.

In some embodiments, the width of the limiting groove is 3 mm-15 mm. The width of the limiting groove is set to be 3-15 mm, so that a good sealing effect can be achieved, and waste of materials is avoided. Because, if the width of spacing groove is less than 3mm, then the width of sealing member probably also is less than 3mm, and sealed effect is relatively poor, if the width of spacing groove is greater than 15mm, then can cause the waste of material.

In some embodiments, the depth of the limiting groove is 1 mm-6 mm. The depth of the limiting groove is set to be 1-6 mm, so that the limiting of the sealing element can be better realized, and meanwhile, the waste of materials can be avoided. Because, if the depth of the limiting groove is less than 1mm, the limiting effect on the sealing element is possibly poor, and if the depth of the limiting groove is greater than 6mm, the waste of materials can be caused.

In some embodiments, the upper cover is provided with a limiting groove, and the position of the limiting groove corresponds to the position of the limiting groove, so that the sealing element is limited through the limiting groove and the limiting groove. According to the embodiment, the limiting groove corresponding to the limiting groove is formed in the upper cover, so that the sealing element can be limited through the limiting groove and the limiting groove, and the limiting effect on the sealing element is improved.

In some embodiments, the sealing member is made of silicon foam or ethylene propylene diene monomer rubber.

In some embodiments, the locking assembly comprises a bolt, the upper cover is connected with the lower box body through the bolt, and the sealing element is arranged on the inner side of the bolt. The upper cover and the lower box body are connected through the bolts, so that the connecting mode is simple, and the disassembly and the assembly are convenient.

In some embodiments, the locking assembly further comprises a nut disposed in the frame of the lower case, the bolt passing through the upper cover and being threadedly connected with the nut, connecting the upper cover with the lower case. In the embodiment, the nuts are arranged in the frame of the lower box body so as to facilitate the connection of the bolts and the lower box body.

In some embodiments, the locking assembly further comprises a threaded sleeve disposed in the frame of the lower case, and the bolt passes through the upper cover and is screwed with the threaded sleeve, so that the upper cover is connected with the lower case. In the embodiment, the screw sleeve is arranged in the frame of the lower box body so as to facilitate the connection of the bolt and the lower box body.

In some embodiments, a threaded hole is provided in the frame of the lower case, and the bolt passes through the upper cover and is in threaded connection with the threaded hole, so that the upper cover is connected with the lower case. In the embodiment, the screw holes are arranged in the frame of the lower box body so as to facilitate the connection of the bolts and the lower box body.

In a second aspect, the present application provides an electrical device comprising a battery according to the above embodiments, the battery being configured to provide electrical energy.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

fig. 1 is a perspective view of a battery provided in the prior art.

Fig. 2 is a partial structural view of the battery of fig. 1.

Fig. 3 is a structural diagram of an electric device according to an embodiment of the present application.

Fig. 4 is an exploded perspective view of a battery provided in an embodiment of the present application.

Fig. 5 is a top view of a battery provided in an embodiment of the present application.

Fig. 6 is a partial structural view of the battery of fig. 5.

Fig. 7 is a partial structural view of the lower case of the battery of fig. 5.

Fig. 8 is a structural view of the seal of fig. 4.

Fig. 9 is a partial block diagram of a battery according to another embodiment of the present application.

The attached drawings are identified:

1. an upper cover; 11. a first side portion; 12. a second side portion; 13. a third side portion; 14. a fourth side portion; 15. a through hole; 2. a lower box body; 21. a first side; 22. a second side; 23. a third side; 24. a fourth side; 25. a limit groove; 26. a mounting hole; 3. a locking assembly; 31. a bolt; 32. a nut; 33. a thread sleeve; 4. a seal; 1', an upper cover; 2', lower box; 3', a bolt; 4', a nut; 5', sealing gasket.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

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

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

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

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

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

The inventor notices that the sealing structure of the upper cover and the lower box body of the existing battery can enable the sealing gasket to be directly exposed to the extension, so that the sealing gasket cannot pass the IPX9K test effectively, and when the high-pressure water gun is aligned with the edge of the sealing gasket to wash, the sealing gasket can be extruded to the inner side of the box body, and the sealing failure is easy to occur. Referring to fig. 1 and 2, fig. 1 is a perspective view of a battery provided in the related art, and fig. 2 is a partial structural view of the battery of fig. 1. The battery generally comprises an upper cover 1' and a lower case 2' which are assembled in a sealing manner, and the sealing structure of the upper cover 1' and the lower case 2' of the conventional battery generally comprises a nut 4', a sealing gasket 5' and a bolt 3', wherein the nut 4' is placed in the frame of the lower case 2' when the upper cover 1' and the lower case 2' are assembled in a sealing manner, the sealing gasket 5' is sleeved in the nut 4', and then the bolt 3' is threaded with the nut 4' after passing through the upper cover 1', so that the upper cover 1' is connected with the lower case 2 in a sealing manner. The sealing structure ensures the compressed height of the sealing gasket 5' by utilizing the flange height of the nut 4', and indirectly controls the compression amount of the sealing gasket 5', thereby realizing the sealing between the upper cover 1' and the lower box body 2 '.

However, the sealing structure of the upper cover 1 'and the lower case 2' of the conventional battery has the following disadvantages: the sealing gasket is directly exposed to the extension, the test of IPX9K cannot be effectively passed, the sealing gasket can be extruded to the inner side of the box body when the high-pressure water gun is aligned with the edge of the sealing gasket for flushing, and the sealing failure is easy to occur; the sealing gaskets are covered on two sides of the box body nut, the sealing gaskets have large width, and materials are wasted; the sealing gasket needs to be punched at the position of the nut to avoid, and the processing technology of the sealing gasket is complex; the gasket is clamped between the upper cover and the box nut flange after the gasket is compressed, so that the bolt lock attachment interface is not rigidly contacted, and the phenomenon of bolt torque attenuation exists.

Based on the above considerations, in order to ensure effective passing of IPX9K test and avoid waste of materials, the present inventors have conducted intensive studies to design a battery including an upper cover, a locking assembly, a lower case, a sealing member, and a battery cell, the lower case being connected to the upper cover through the locking assembly, and the lower case being provided with a limit groove located inside the locking assembly; the sealing element is arranged in the limit groove, and is compressed between the upper cover and the bottom wall of the limit groove, so that a sealed accommodating cavity is formed between the upper cover and the lower box body, and the battery cell is arranged in the accommodating cavity. According to the embodiment, the sealing element is arranged on the inner side of the locking assembly, so that when the battery is subjected to IPX9K test, high-pressure water flow is directly blocked through the profile wall on the outer side of the lower box body, and the sealing element is further protected, so that the battery can pass the IPX9K test effectively; meanwhile, the sealing piece does not need to cover two sides of the locking assembly, the width of the sealing piece can be set smaller, waste of materials is avoided, the sealing piece does not need to be provided with an avoidance hole, the process is simple, and in addition, the phenomenon that the torque of a bolt is attenuated due to the fact that the sealing piece is clamped with glue can be avoided.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the batteries. A power supply system having the battery or the like disclosed in the present application constituting the power utilization device can be used, so that it can be ensured that the IPX9K test can be effectively passed; meanwhile, the width of the sealing element can be set smaller, the waste of materials is avoided, the sealing element does not need to be provided with an avoidance hole, the process is simple, and in addition, the phenomenon that the torque of the bolt is attenuated due to the fact that the sealing element is clamped with glue can be avoided.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following examples will take a battery according to an embodiment of the present application as an example.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 4, fig. 4 is an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 includes a lower case 2, an upper cover 1, and a battery module, the lower case 2 and the upper cover 1 being connected to define a receiving space for receiving the battery module, and the battery module being received in the receiving space defined by the lower case 2 and the upper cover 1. Wherein, the lower case 2 may have a hollow structure with one end opened, the upper cover 1 may have a plate structure, and the upper cover 1 covers the opening side of the lower case 2, so that the upper cover 1 and the lower case 2 define an accommodating space together; the upper cover 1 and the lower case 2 may be hollow structures with one side open, and the open side of the upper cover 1 is closed to the open side of the lower case 2. Of course, the case formed by the upper cover 1 and the lower case 2 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the battery 100, the battery module may include a plurality of battery cells, and the plurality of battery cells may be connected in series, in parallel, or in series-parallel, where the series-parallel refers to both of the plurality of battery cells being connected in series and in parallel. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery monomers is accommodated in the box body; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in a case. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between a plurality of battery cells.

Wherein each battery cell may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped.

The battery cell refers to the smallest unit constituting the battery. The battery cell includes an end cap, a case, an electrode assembly, and other functional components.

The end cap refers to a member that is covered at the opening of the case to isolate the inner environment of the battery cell from the outer environment. Without limitation, the shape of the end cap may be adapted to the shape of the housing to fit the housing. Optionally, the end cover may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the end cover is not easy to deform when being extruded and collided, so that the battery unit can have higher structural strength, and the safety performance can be improved. The end cap may be provided with a functional part such as an electrode terminal or the like. The electrode terminals may be used to be electrically connected with the electrode assembly for outputting or inputting electric power of the battery cells. In some embodiments, a pressure relief mechanism may also be provided on the end cap for relieving the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The material of the end cap may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment. In some embodiments, insulation may also be provided on the inside of the end cap, which may be used to isolate electrical connection components within the housing from the end cap to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The case is an assembly for mating with the end cap to form an internal environment of the battery cell, wherein the formed internal environment may be used to house the electrode assembly, electrolyte, and other components. The housing and the end cap may be separate components and an opening may be provided in the housing to form the internal environment of the battery cell by closing the end cap at the opening. The end cap and the housing may be integrated, and in particular, the end cap and the housing may be formed with a common connection surface prior to insertion of the other components into the housing, and the end cap may be closed to the housing when it is desired to encapsulate the interior of the housing. The housing may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case may be determined according to the specific shape and size of the electrode assembly. The material of the housing may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiments of the present application.

The electrode assembly is a component in which electrochemical reactions occur in the battery cells. One or more electrode assemblies may be contained within the case. The electrode assembly is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having the active material constitute the main body portion of the electrode assembly, and the portions of the positive electrode sheet and the negative electrode sheet having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected with the electrode terminal to form a current loop.

According to some embodiments of the present application, referring to fig. 4 to 8, fig. 4 is a perspective exploded view of a battery provided in the embodiment of the present application, fig. 5 is a top view of the battery provided in the embodiment of the present application, fig. 6 is a partial structure view of the battery in fig. 5, fig. 7 is a partial structure view of a lower case of the battery in fig. 5, and fig. 8 is a structure view of a sealing member in fig. 4. The application provides a battery, this battery include upper cover 1, battery module, lock attach the subassembly 3 and lower box 2, and the week side of lower box 2 is connected with upper cover 1 through lock attach the subassembly 3, is formed with and holds the chamber, and the week side of lower box 2 is equipped with spacing groove 25, and spacing groove 25 is located the inboard of lock attach the subassembly 3. The sealing element 4 is distributed on the periphery of the whole lower box body 2 and is positioned in the limiting groove 25, so that the sealing element 4 is positioned on the inner side of the locking assembly 3 and is compressed between the upper cover 1 and the bottom wall of the limiting groove 25, a sealed accommodating cavity is formed between the upper cover 1 and the lower box body 2, and the battery module is arranged in the accommodating cavity.

Wherein, the circumference side of lower box 2 is equipped with first connecting portion, and spacing groove 25 is located the inboard of first connecting portion. The peripheral side of the upper cover 1 is provided with a second connecting portion, which is connected with the first connecting portion through the lock attachment assembly 3, that is, the limit groove 25 is also located at the inner side of the lock attachment assembly 3, that is, the limit groove 25 is located closer to the accommodating cavity than the Yu Suo attachment assembly 3. The sealing member 4 is disposed in the limit groove 25, and in a natural state, the sealing member 4 protrudes from the limit groove 25, so that the sealing member 4 is compressed between the upper cover 1 and the bottom wall of the limit groove 25 when the upper cover 1 is assembled with the lower case 2.

According to the embodiment, the sealing element 4 is arranged on the inner side of the locking assembly 3, namely, the sealing structure of the battery is separated from the locking structure, so that the sealing element 4 is protected, when the battery is subjected to IPX9K test, high-pressure water flow is directly blocked through the profile wall on the outer side of the lower box body 2, and then the IPX9K test can be effectively passed, so that the sealing of the battery is ensured, meanwhile, the sealing element 4 only needs to be made into a square annular structure, extra punching is not needed, and the structure is simple; in addition, the sealing element 4 does not need to cover two sides of the locking assembly 3, the width of the sealing element 4 can be smaller, waste of materials is avoided, and the phenomenon that the torque of the bolts is attenuated due to the fact that the sealing element 4 is clamped by glue can be avoided. The present embodiment further provides a limit groove 25 to limit the sealing element 4, so as to prevent the sealing element 4 from being displaced in the process of being compressed.

According to some embodiments of the present application, optionally, the compression amount of the sealing member 4 compressed by the upper cover 1 and the bottom wall of the limiting groove 25 is 20% -80%, where the compression amount refers to a ratio of the compressed height of the sealing member 4 to the height of the sealing member 4 in a natural state.

In order to secure sealability of the battery, the compression amount of the sealing member 4 compressed by the upper cover 1 and the bottom wall of the limiting groove 25 is 20% to 80%, specifically, the compression amount of the sealing member 4 compressed by the upper cover 1 and the bottom wall of the limiting groove 25 may be 20%, 30%, 40%, 50%, 60%, 70%, 80%, or the like.

In this embodiment, the compression amount by which the seal member 4 is compressed is 20% to 80% so as to ensure the sealing effect and the mounting effect of the upper cover 1 and the lower case 2. Because, if the compression amount of the seal 4 is less than 20%, the elastic force of the seal 4 is applied to the upper cover 1 and the lower case 2, which affects the mounting effect of the upper cover 1 and the lower case 2, and if the compression amount of the seal 4 is more than 80%, the sealing effect of the upper cover 1 and the lower case 2 may be affected.

Optionally, according to some embodiments of the present application, the width of the seal 4 is equal to or less than the width of the limit groove 25.

Specifically, the width W of the limiting groove 25 is 3mm to 15mm, and specifically 3mm, 6mm, 9mm, 12mm, 15mm, etc. may be used. The width of the seal member 4 in the natural state is 3mm to 15mm, specifically, 3mm, 6mm, 9mm, 12mm, 15mm, etc., and the width of the seal member 4 in the natural state is equal to or smaller than the width of the limit groove 25.

The present embodiment sets the width of the seal member 4 to be equal to or smaller than the width of the limit groove 25 to facilitate the installation of the seal member 4. Because, if the width of the sealing member 4 is greater than the width of the limiting groove 25, it may be difficult to install the sealing member 4 into the limiting groove 25.

According to some embodiments of the present application, the depth of the limit groove 25 is optionally 1mm to 6mm.

Specifically, the depth H of the limiting groove 25 is 1mm to 6mm, and specifically may be 1mm, 3mm, 5mm, 6mm, or the like. The height of the sealing element 4 in the natural state is 1.3 mm-12 mm, specifically 1.3mm, 3mm, 5mm, 7mm, 9mm, 11mm, 12mm, etc., and the height of the sealing element 4 in the natural state is larger than the depth of the limit groove 25, so as to ensure that the sealing element 4 can be compressed by the upper cover 1 and the bottom wall of the limit groove 25.

In this embodiment, the depth of the limiting groove 25 is set to be 1 mm-6 mm, so that the limiting of the sealing element 4 can be better realized, and meanwhile, the waste of materials can be avoided. Because, if the depth of the limiting groove 25 is less than 1mm, the limiting effect on the sealing member 4 may be poor, and if the depth of the limiting groove 25 is greater than 6mm, the waste of material may be caused.

According to some embodiments of the present application, optionally, the upper cover 1 is provided with a limit groove (not shown in the figure), where the position of the limit groove is set corresponding to the position of the limit groove 25, so that the seal member is further limited by the limit groove 25 and the limit groove, and displacement of the seal member 4 is prevented.

In the embodiment, the limiting groove corresponding to the position of the limiting groove 25 is formed in the upper cover 1, so that the sealing element 4 can be limited through the limiting groove and the limiting groove 25, and the limiting effect on the sealing element 4 is improved.

According to some embodiments of the present application, optionally, the sealing member is made of silicon foam or Ethylene Propylene Diene Monomer (EPDM).

According to some embodiments of the present application, optionally, the locking assembly 3 comprises a bolt 31 by which the upper cover 1 is connected to the lower case 2, the seal 4 being provided inside the bolt.

With continued reference to fig. 3, the lower case 2 includes a frame having a first side 21, a second side 22, a third side 23, and a fourth side 24, the first side 21 and the second side 22 are disposed opposite to each other, the third side 23 and the fourth side 24 are disposed opposite to each other, and the first side 21, the second side 22, the third side 23, and the fourth side 24 are provided with first connection portions, and the first connection portions of the first side 21, the second side 22, the third side 23, and the fourth side 24 are provided with a plurality of mounting holes 26, respectively, and the plurality of mounting holes 26 are distributed at intervals along a length extending direction of each side. The upper cover 1 has a first side 11, a second side 12, a third side 13 and a fourth side 14, the first side 11 and the second side 12 are disposed opposite to each other, the third side 13 and the fourth side 14 are disposed opposite to each other, the first side 11, the second side 12, the third side 13 and the fourth side 14 are each provided with a second connection portion, the second connection portions of the first side 11, the second side 12, the third side 13 and the fourth side 14 are each provided with a plurality of through holes 15, the plurality of through holes 15 are distributed at intervals along the length extension direction of each side, and the positions of the plurality of through holes 15 correspond to the positions of the plurality of mounting holes 26.

The limiting grooves 25 are disposed at positions of the first side 21, the second side 22, the third side 23 and the fourth side 24 close to the battery module (the limiting grooves are closer to the battery module than the mounting holes), and the limiting grooves 25 on the respective sides are mutually communicated to form an annular structure. The sealing element 4 is of a square annular structure, and the shape of the sealing element corresponds to that of the limiting groove 25. During assembly, the sealing element 4 is assembled in the limit groove 25, and then the bolt 31 is penetrated through the through hole 15 and the mounting hole, so that the upper cover 1 is fixedly connected with the lower box body 2.

In this embodiment, the upper cover 1 is connected with the lower case 2 by the bolts 31, and the connection mode is simple and the disassembly and assembly are convenient.

According to some embodiments of the present application, optionally, the locking assembly 3 further includes a nut 32, the nut 32 is disposed in the frame of the lower case 2, and the bolt 31 passes through the upper cover 1 and is screwed with the nut 32, so that the upper cover 1 is connected with the lower case 2.

With continued reference to fig. 6, the lock attachment assembly 3 includes a bolt 31 and a nut 32, the nut 32 being fitted to the mounting hole 26, wherein the nut 32 may be, for example, a blind rivet nut. When the battery module is assembled, the sealing element 4 is assembled in the limit groove 25, and each bolt 31 respectively penetrates through each through hole 15 and is in threaded connection with each nut 32, so that the upper cover 1 is fixedly connected with the lower box body 2, meanwhile, the sealing element 4 is compressed by the upper cover 1 and the bottom wall of the limit groove 25, so that a sealed accommodating cavity for accommodating the battery module is formed between the upper cover 1 and the lower box body 2, and at the moment, the sealing element is positioned on the inner side of the bolt 31.

The present embodiment facilitates the connection of the bolts 31 to the lower case 2 by providing nuts 32 in the frame of the lower case 2.

According to some embodiments of the present application, the optional locking assembly 3 further comprises a threaded sleeve 33, the threaded sleeve 33 being provided in the frame of the lower case 2, and the bolt 31 passing through the upper cover 1 and being screwed with the threaded sleeve 33, connecting the upper cover 1 with the lower case 2.

Referring to fig. 9, fig. 9 is a partial structure view of a battery according to another embodiment of the present application. The lock assembly 3 includes a bolt 31 and a threaded sleeve 33, the threaded sleeve 33 being fitted into the mounting hole 26, the threaded sleeve 33 being, for example, a wire threaded sleeve. Bolts 31 pass through the through holes 15 and are screwed with the screw bosses 33, thereby fixedly connecting the upper cover 1 with the lower case 2, and simultaneously compressing the sealing member 4 by the bottom walls of the upper cover 1 and the limiting groove 25, thereby forming a sealed accommodating chamber between the upper cover 1 and the lower case 2, which can be used for accommodating the battery module.

The present embodiment facilitates the connection of the bolts 31 to the lower case 2 by providing a threaded sleeve 33 in the frame of the lower case 2.

According to some embodiments of the present application, optionally, a threaded hole is provided in the frame of the lower case 2, and a bolt 31 passes through the upper cover 1 and is screwed with the threaded hole, so that the upper cover 1 is connected with the lower case 2.

Specifically, the inner wall of the mounting hole 26 is threaded to form a threaded hole. During assembly, the bolts 31 penetrate through the through holes 15 and are in threaded connection with the threaded holes, so that the upper cover 1 is fixedly connected with the lower case 2, and meanwhile, the sealing member 4 is compressed by the bottom walls of the upper cover 1 and the limiting groove 25, so that a sealed accommodating cavity capable of accommodating the battery module is formed between the upper cover 1 and the lower case 2.

The present embodiment facilitates the connection of the bolts 31 to the lower case 2 by providing screw holes in the frame of the lower case 2.

According to some embodiments of the present application, there is also provided an electrical device comprising a battery as described in any one of the above aspects for providing electrical energy to the electrical device.

The powered device may be any of the aforementioned devices or systems employing batteries.

According to some embodiments of the present application, there is provided a battery including an upper cover 1, a locking assembly 3, a lower case 2, and a sealing member 4, the lower case 2 is connected with the upper cover 1 through the locking assembly 3, and the lower case 2 is provided with a limit groove 25, the limit groove 25 being located at an inner side of the locking assembly 3. The sealing member 4 is disposed in the limit groove 25, and the sealing member 4 is compressed between the upper cover 1 and the bottom wall of the limit groove 25.

Wherein the compression amount of the sealing element 4 compressed by the upper cover 1 and the bottom wall of the limit groove 25 is 20% -80%, the width W of the limit groove 25 is 3-15 mm, and the width of the sealing element 4 is equal to or smaller than the width of the limit groove 25. The depth of the limit groove 25 is 1 mm-6 mm, and the height of the sealing element 4 in a natural state is larger than the depth of the limit groove 25.

This embodiment is through setting up sealing member 4 in the inboard of bolt 31 to protect sealing member 4, when carrying out the IPX9K test to this battery, directly block high-pressure rivers through lower box 2 outside section bar wall, and then can effectively pass through the IPX9K test, the sealing member 4 of this application only need do a square annular structure simultaneously, and need not additionally to process and draw the rivet nut and dodge the hole, appearance and simple process, save material, and can also solve sealing member 4 and be pressed from both sides between upper cover 1 and the rivet nut and lead to the problem of bolt 31 moment of torsion decay.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A battery, comprising:

an upper cover;

a locking assembly;

the lower box body is connected with the upper cover through the locking assembly, and is provided with a limiting groove which is positioned at the inner side of the locking assembly;

the sealing piece is arranged in the limiting groove, and is compressed between the upper cover and the bottom wall of the limiting groove.

2. The battery according to claim 1, wherein the compression amount by which the seal member is compressed by the upper cover and the stopper groove bottom wall is 20% to 80%, wherein the compression amount is a ratio of the height of the seal member after being compressed to the height of the seal member in a natural state.

3. The battery of claim 1, wherein the width of the seal is equal to or less than the width of the limiting groove.

4. A battery according to claim 3, wherein the width of the limiting groove is 3mm to 15mm.

5. The battery of claim 1, wherein the limiting groove has a depth of 1mm to 6mm.

6. The battery according to claim 1, wherein the upper cover is provided with a limit groove, and the position of the limit groove is set corresponding to the position of the limit groove, so that the seal member is limited by the limit groove and the limit groove.

7. The battery according to any one of claims 1 to 6, wherein the sealing member is made of silicon foam or ethylene propylene diene monomer.

8. The battery according to any one of claims 1 to 6, wherein the locking assembly includes a bolt, the upper cover is connected to the lower case through the bolt, and the sealing member is provided inside the bolt.

9. The battery of claim 8, wherein the locking assembly further comprises a nut disposed in the frame of the lower housing, the bolt passing through the upper cover and threadably connecting the nut, the upper cover connecting the lower housing.

10. The battery of claim 8, wherein the locking assembly further comprises a threaded sleeve disposed in the frame of the lower case, the bolt passing through the upper cover and being threadedly coupled to the threaded sleeve to connect the upper cover to the lower case or,

the frame of the lower box body is provided with a threaded hole, and the bolt penetrates through the upper cover and is in threaded connection with the threaded hole, so that the upper cover is connected with the lower box body.

11. An electrical device comprising a battery as claimed in any one of claims 1 to 10.

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