CN215816239U - Cover body assembly and energy storage equipment - Google Patents

Abstract

The application discloses lid subassembly and energy memory. The cover body assembly comprises a cover body and a sealing element, a groove is formed in one side of the cover body, and a through connecting hole is formed in the bottom wall of the groove. The sealing element comprises a sealing main body and a sealing convex part, wherein the sealing main body is matched with the groove, arranged in the groove and connected with the side wall of the groove in a sealing way. The sealing convex part is connected with one side of the sealing main body facing the bottom wall of the groove and is matched with the connecting hole; when the sealing main body is installed in the groove, the sealing convex part can be simultaneously inserted into the connecting hole and is in sealing connection with the hole wall of the connecting hole. By the mode, the sealing performance of the cover body assembly can be improved, and the cover body assembly is stable and reliable.

Description

Cover body assembly and energy storage equipment

Technical Field

The application relates to the field of energy equipment, in particular to a cover body assembly and energy storage equipment.

Background

With the development and application of power supply equipment, portable power supply equipment has more and more application scenes, and the safety and reliability of the power supply equipment also become important.

The cover body assembly of the existing power supply equipment is usually installed in a buckling mode or through screws, the sealing performance of the cover body assembly is defective, gaps are easily generated around a battery cover in buckling connection, the screws are also easily rusted, so that external impurities easily enter the cover body assembly through some gaps or screw holes of the cover body, the faults of an electric circuit are caused, and the power utilization safety is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The main technical problem who solves of this application provides lid subassembly and energy storage equipment, can improve the poor problem of lid subassembly sealing performance among the prior art.

In order to solve the technical problem, the application adopts a technical scheme that: the cover body assembly comprises a cover body and a sealing element, wherein a groove is formed in one side of the cover body, and a through connecting hole is formed in the bottom wall of the groove. The sealing element comprises a sealing main body and a sealing convex part, wherein the sealing main body is matched with the groove, arranged in the groove and connected with the side wall of the groove in a sealing way. The sealing convex part is connected with one side of the sealing main body facing the bottom wall of the groove and is matched with the connecting hole; when the sealing main body is installed in the groove, the sealing convex part can be simultaneously inserted into the connecting hole and is in sealing connection with the hole wall of the connecting hole.

In order to solve the above technical problem, another technical solution adopted by the present application is: the utility model provides an energy storage equipment, energy storage equipment include the bracket component and as above-mentioned lid subassembly, the bracket component sets up in the lid deviates from one side of sealing member. The bracket component is provided with a connecting column which is used for being matched with the connecting hole to connect the bracket component with the cover body.

The beneficial effect of this application is: be different from prior art's condition, this application runs through the both sides of diapire through the connecting hole, the sealed convex part and the connecting hole phase-match of sealing member, the lid is connected through sealed convex part to the sealing member, and when connecting, sealed convex part can insert the connecting hole, it is sealed with the one end of connecting hole, make the other end of connecting hole when connecting other parts, the dust, impurity such as steam can not follow the local infiltration that connecting hole and sealing member are connected, can protect the connecting hole effectively and the part of being connected with the connecting hole, reduce the influence of impurity etc. to the connecting hole, improve the stability of connecting, improve lid subassembly sealing performance and reliability.

Drawings

FIG. 1 is a schematic diagram of an exploded view of an embodiment of an energy storage device of the present application;

FIG. 2 is a schematic diagram of an exploded view of another embodiment of the energy storage device of the present application;

fig. 3 is an exploded view of a cover and bracket assembly according to another embodiment of the energy storage device of the present application;

FIG. 4 is a schematic view of the seal of FIG. 2;

FIG. 5 is a schematic view of the sealing nose of the seal of FIG. 4;

FIG. 6 is a schematic diagram of an exploded view of yet another embodiment of an energy storage device according to the present application;

fig. 7 is a schematic structural view of the bracket assembly shown in fig. 6.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

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

Embodiments of energy storage devices, typically devices for energy storage and management in mechanical devices, typically for storing electrical, magnetic, or chemical energy, and cover assemblies are provided. Common energy storage devices are, for example, accumulators, inductors, capacitors, etc. And the cover body assembly is an assembly used for assembling and protecting an internal circuit in the energy storage device.

As shown in fig. 1, an energy storage device 1 described in the embodiment of the energy storage device of the present application may include: a cover assembly 10 and a bracket assembly 103. The bracket assembly 103 is coupled to one side of the cover assembly 10.

Optionally, the energy storage device 1 may further comprise a battery assembly 20. The battery assembly 20 is connected to the side of the bracket assembly 103 away from the cover assembly 10. The battery assembly 20 may be used to provide the energy storage device 1 with the capability of storing electrical energy and may output electrical energy to an external device.

The battery assembly 20 may include a battery 201 and a lower cover 202, and the battery 201 may be a battery of a mobile power source, a battery of an emergency power source of an automobile, or a battery of another device. The lower cover 202 can be used for accommodating the battery 201 and related components, so that impurities such as dust and water vapor can be prevented from entering the energy storage device 1, the battery 201 is further prevented from entering the energy storage device 1, a corresponding protection effect is achieved, and the service life of the energy storage device 1 is prolonged. For example, the lower cover 202 is connected to the cover assembly 10 in a snap-fit manner to form a housing of the energy storage device 1, which can protect the battery 201 and other internal components of the energy storage device 1.

In the following detailed description of the embodiments of the energy storage device of the present application, because the energy storage device includes the cover assembly, reference may be made to the following description of the embodiments of the energy storage device for the embodiments of the cover assembly.

As shown in fig. 2 and 3, the energy storage device 1 described in the embodiments of the energy storage device of the present application may include a cover assembly 10 and a bracket assembly 103. Cap assembly 10 may specifically include a cap 102 and a seal 101. The cover 102 may be connected to the lower cover 202 of fig. 1, for example, the lower cover 202 may be detachably connected. The bracket assembly 103 may be electrically connected to the battery 201 of fig. 1 to control and protect the battery 201.

Specifically, the cover 102 has a recess 1022, wherein a bottom wall of the recess 1022 has a connection hole 1021, and the connection hole 1021 penetrates through two sides of the bottom wall of the recess 1022 in a through hole shape. Further, the seal 101 may include a seal body 1011 and a seal protrusion 1012 connected to the seal body 1011. The sealing main body 1011 is disposed on a side of the sealing member 101 facing the cover 102, the sealing main body 1011 matches with the groove 1022, the sealing main body 1011 is connected with a side wall of the sealing groove 1022 in a sealing manner, seals an opening of the groove 1022, and is fixedly installed in the groove 1022. The sealing protrusion 1012 is matched with the connection hole 1021, and is inserted into the connection hole 1021 and is connected with the connection hole 1021 in a sealing manner, so as to connect the sealing member 101 with the cover body 102. And the other side of the connection hole 1021 and the sealing convex part 1012 in sealing connection can be connected with a connecting piece to be protected, and when the connecting piece to be protected is connected with the other side of the connection hole 1021 and the sealing convex part 1012 in sealing connection, the sealing convex part 1012 can effectively seal the connection hole 1021, so that impurities are prevented from entering, and the connection stability is improved. For the convenience of understanding, the bracket assembly 103 is taken as an example of the connection component to be protected, and besides the bracket assembly 103 provided in the present application, a person skilled in the art may connect other components to the connecting hole 1021 and the sealing member 101 to improve the reliability and stability of the connection component to be protected.

With continued reference to fig. 2 and 3, the seal 101 and bracket assembly 103 are positioned on opposite sides of the bottom wall of the recess 1022. As described above, the sealing member 101 is coupled to the cover 102, the sealing main body 1011 closes one side opening of the recess 1022, and the sealing protrusion 1012 is coupled to the coupling hole 1021 at the bottom of the recess 1022. The bracket assembly 103 is disposed on a side of the cover 102 away from the sealing member 101 and is fixedly connected to the cover 102 in the connecting hole 1021. At least a portion of the connection position of the support assembly 103 and the cover 102 is located in the connection hole 1021, for example, the support assembly 103 and the cover 102 may be connected by a snap connection, a screw connection, an adhesive connection, or a tight fit (interference fit) connection, etc. in the connection hole 1021, so as to prevent the support assembly 103 and the cover 102 from being separated.

In the embodiment, the connection hole 1021 on the bracket component 103 and the cover 102 is detachably connected, and the sealing convex portion 1012 of the sealing main body 1011 is inserted into the connection hole 1021 in the cover 102 and seals the connection hole 1021, so that water or other impurities can be reduced from entering the connection hole 1021, the influence of the impurities and the like on the connection between the bracket component 103 and the connection hole 1021 can be reduced, the connection stability between the bracket component 103 and the connection hole 1021 can be improved, and the sealing performance and reliability of the cover component 10 can be improved.

Alternatively, the number of the connecting holes 1021 and the sealing protrusions 1012 may be plural, and each sealing protrusion 1012 is inserted into the corresponding connecting hole 1021 in a one-to-one correspondence, so as to enhance the stability among the bracket assembly 103, the cover 102, and the sealing member 101. The support assembly 103 is connected to the cover 102 through the plurality of connection holes 1021, and the plurality of sealing protrusions 1012 are inserted into the plurality of connection holes 1021 in the cover 102 in a one-to-one manner and block the plurality of connection holes 1021, so that water or other impurities can be prevented from entering the connection holes 1021, the sealing performance of the cover assembly 10 is improved, the use experience is improved, and the cover assembly 10 is stable and reliable.

The sealing member 101 may be integrally formed, and the material thereof may be plastic soft rubber. The sealing convex part 1012 can be arranged in a column shape, the maximum diameter of the cross section of the sealing convex part 1012 is larger than that of the connecting hole 1021, the sealing convex part 1012 can be partially or completely inserted into the connecting hole 1021, and a column section of the sealing convex part 1012, of which the diameter is larger than that of the connecting hole 1021, can be in interference fit with the connecting hole 1021, so that the connection stability of the sealing convex part 1012 and the connecting hole 1021 is enhanced, and the sealing convex part 1012 is ensured to block the connecting hole 1021.

Specifically, as shown in fig. 5, the sealing protrusion 1012 may include a first column section 10122 and a second column section 10121. One end of the first column section 10122 is fixedly connected to the sealing body 1011, and the other end of the first column section 10122 is fixedly connected to the second column section 10121. The diameter of the second column section 10121 is greater than the first column section 10122, the diameter of the second column section 10121 gradually decreases in a direction away from the first column section 10122, and the diameter of the second column section 10121 is greater than or equal to the diameter of the connecting hole 1021. When the sealing protrusion 1012 is partially or completely inserted into the connection hole 1021, the second column section 10121 is partially or completely inserted into the connection hole 1021, and the first column section 10122 is partially or completely inserted into the connection hole 1021. Because the diameter of the second column section 10121 is greater than or equal to the diameter of the connecting hole 1021, when the second column section 10121 and the first column section 10122 are inserted into the connecting hole 1021, a part of the column section of the second column section 10121 is in interference fit with the connecting hole 1021, so that water or other impurities can be prevented from entering the connecting hole 1021, and the sealing performance of the cover body assembly 10 is improved.

The sealing body 1011 and the recess 1022 may be annularly disposed. For example, the sealing body 1011 and the recess 1022 may be provided in the form of a circular ring or other polygonal ring. Due to the matching of the sealing body 1011 and the groove 1022, the sealing body 1011 and the groove 1022 may be configured with other shapes having certain features to position the sealing body 1011 and the groove 1022 to facilitate assembly of the sealing body 1011 and the groove 1022, for example, the openings of the sealing body 1011 and the groove 1022 are configured in a semi-circular shape to facilitate quick installation of the sealing body 1011 and the groove 1022. As shown in fig. 4, the sealing protrusion 1012 is disposed on a side of the sealing body 1011 facing the bracket assembly 103, i.e., a side of the sealing body 1011 near the connecting hole 1021. The plurality of sealing convex portions 1012 are arranged at intervals along the circumferential direction of the sealing main body 1011, and the connection holes 1021 corresponding to the sealing convex portions 1012 one by one are opened in the circumferential direction on the surface of the side where the cover body 102 is connected to the sealing member 101, so that the plurality of sealing convex portions 1012 can be inserted into the plurality of connection holes 1021 one by one.

By arranging the plurality of sealing convex portions 1012 on the sealing main body 1011, on the one hand, the sealing main body 1011 can be positioned better, and on the other hand, the connecting hole 1021 does not need to be plugged one by one, so that the connecting hole 1021 can be sealed more conveniently, unnecessary trouble is avoided, and the cover assembly 10 is convenient to detach.

In order to limit the fixing of the sealing protrusion 1012 in the connection hole 1021, as shown in fig. 4 and fig. 6, the sealing element 101 described in this embodiment further includes a limiting protrusion connected to the sealing main body 1011, and the cover 102 further defines a limiting hole, which is specifically located on a sidewall of the recess 1022, and the limiting protrusion can be embedded in the limiting hole to limit the movement of the sealing main body 1011 in the direction that the sealing protrusion 1012 is pulled out from the connection hole 1021.

Specifically, the position-limiting protrusions include a first position-limiting protrusion 1013 and a second position-limiting protrusion 1014, the position-limiting holes include a first position-limiting hole 10241 and a second position-limiting hole 10242, and optionally, the number of the first position-limiting protrusion 1013, the second position-limiting protrusion 1014, the first position-limiting hole 10241 and the second position-limiting hole 10242 is plural. The first and second position-restricting protrusions 1013 and 1014 are respectively fitted into the first and second position-restricting holes 10241 and 10242 in a one-to-one correspondence so as to restrict the movement of the sealing body 1011 in the direction in which the sealing protrusion 1012 is pulled out from the connecting hole 1021.

The first limiting hole 10241 and the second limiting hole 10242 are connected with the side wall of a groove 1022 arranged on the cover body 102, the shape of the groove 1022 is matched with that of the sealing main body 1011, and the groove 1022 and the sealing main body 1011 are arranged in an annular groove shape, for example, a square annular groove shape. The recess 1022 is also connected with a connection hole 1021. When the sealing main body 1011 is received in the recess 1022, the sealing main body 1011 abuts against the sidewall of the recess 1022, so that the first position-limiting protrusion 1013 and the second position-limiting protrusion 1014 are respectively embedded in the first position-limiting hole 10241 and the second position-limiting hole 10242 in a one-to-one correspondence manner. In this embodiment, the sealing member 101 is provided with a plurality of positioning protrusions for connecting with the limiting holes of the cover 102, so as to further enhance the stability between the cover 102 and the sealing member 101, and limit the movement of the sealing body 1011 and the groove 1022 when the cover 102 and the sealing member 101 are connected, thereby preventing the looseness between the cover 102 and the sealing member 101.

The recess 1022 is surrounded by the first sidewall 10231, the second sidewall 10232 and the bottom 10233 of the cover 102. Bottom wall 10233 is disposed opposite cartridge assembly 103, first sidewall 10231 and second sidewall 10232 are disposed opposite each other, and first sidewall 10231 and second sidewall 10232 are connected perpendicularly to the sides of bottom wall 10233, for example, first sidewall 10231, second sidewall 10232 and bottom wall 10233 are enclosed to form a closed square-ring-shaped groove including groove 1022, so that sealing body 1011 can engage first sidewall 10231, second sidewall 10232 and bottom wall 10233.

The first limiting holes 10241 are circumferentially spaced apart from the first sidewall 10231, the second limiting holes 10242 are circumferentially spaced apart from the second sidewall 10232, and the connecting holes 1021 are formed in the bottom wall 10233. Corresponding to the first limiting hole 10241 and the second limiting hole 10242, the inner side wall of the sealing main body 1011 is provided with a first limiting protrusion 1013 along the circumferential direction, the outer side wall of the sealing main body 1011 is provided with a second limiting protrusion 1014 along the circumferential direction, and the first limiting protrusion 1013 and the second limiting protrusion 1014 are fixedly connected with the sealing main body 1011. Alternatively, the first and second restriction protrusions 1013 and 1014 may have a rectangular parallelepiped shape, and alternatively, the first and second restriction holes 10241 and 10242 may have a shape matching the first and second restriction protrusions 1013 and 1014, respectively.

When the plurality of sealing protrusions 1012 are inserted into the plurality of connection holes 1021 and block the plurality of connection holes 1021, the plurality of first position-limiting protrusions 1013 and the plurality of second position-limiting protrusions 1014 connected to the sealing main body 1011 are respectively embedded into the plurality of first position-limiting holes 10241 and the plurality of second position-limiting holes 10242 in a one-to-one correspondence manner, so as to limit the movement of the sealing main body 1011 in the direction in which the sealing protrusions 1012 are pulled out of the connection holes 1021.

As shown in fig. 7, the rack assembly 103 may include a circuit board 1032 and a bottom plate 1031. The circuit board 1032 is mounted on the bottom plate 1031 near the side of the recess 1022, so that the circuit board 1032 is received in the recess when the bracket assembly 103 is connected to the cover 102. The connecting column 1033 is disposed on the bottom plate 1031, and one end of the connecting column 1033 is fixedly connected to a side of the bottom plate 1031 facing the cover 102. The other end of the connecting column 1033 is at least partially inserted into the connecting hole 1021 and detachably connected to the cover 102. Alternatively, the connecting column 1033 and the connecting hole may be fixed to each other by a fastener, and after the fastener is removed, the bracket assembly 103 and the cover 102 are detached from each other. Optionally, the connection column 1033 may be provided with a fastening portion, and a clamping groove portion corresponding to the fastening portion is provided in the connection hole 1021, so that the connection column 1033 and the connection hole 1021 are conveniently fixed. In this manner, assembly and positioning of the carriage assembly 103 may be facilitated.

The bottom plate 1031 may further be provided with support posts 1034. One end of the support pillar 1034 is fixedly connected to the bottom plate 1031 and spaced apart from the connection column 1033, and the other end of the support pillar 1034 is fixedly connected to the circuit board 1032 so that the circuit board 1032 is disposed in parallel and spaced apart from the bottom plate 1031.

Alternatively, the number of connection posts 1033 and support posts 1034 may be multiple, a plurality of connection posts 1033 may be disposed around the periphery of the circuit board 1032, and a plurality of support posts 1034 may be disposed around the circuit board 1032, the plurality of connection posts 1033 and support posts 1034 may further facilitate the positioning of the circuit board 1032 of the rack assembly 103.

Specifically, the connection column 1033 may be a screw column, an internal thread is formed at one end of the connection column 1033 inserted into the connection hole 1021, and the cover 102 is fixedly connected to the connection column 1033 in the connection hole 1021 through a first screw 011 matched with the internal thread of the connection column 1033. For example, the connection column 1033 is partially inserted into the connection hole 1021, so that the first screw 011 is guided, and the inaccurate installation of the first screw 011 is avoided. Alternatively, the number of the first screws 011 may be plural, and the first screws 011 may be self-tapping screws. A baffle may be disposed inside the connection hole 1021 to prevent the first screw 011 from passing through the connection hole 1021.

Optionally, the bottom plate 1031 and the connection column 1033 may be detachably connected by a snap structure, a thread structure, a detachable adhesive structure, a tight fit structure, a bolt structure, a screw structure, or the like. For example, the connecting column 1033 has a screw thread at one end connected to the bottom plate 1031, and the bottom plate 1031 and the connecting column 1033 are detachably connected by a screw thread structure.

Further, the support posts 1034 are closer to the center of the bottom plate 1031 than the connection posts 1033 so that when the support posts 1034 support the circuit board 1032, the circuit board 1032 is supported at the center of the bottom plate 1031. The supporting column 1034 may also be a screw column, one end of the supporting column 1034 fixedly connected to the circuit board 1032 is provided with an internal thread, the circuit board 1032 is provided with a through hole corresponding to the supporting column 1034, a second screw 012 adapted to the internal thread of the supporting column 1034 passes through the through hole and is threadedly connected to the supporting column 1034, and the circuit board 1032 is fixedly connected to the supporting column 1034 through the second screw 012. The circuit board 1032 may be provided with a control circuit (not shown) of the battery 201, and the circuit board 1032 controls the output power of the battery 201 through the control circuit. Of course, the circuit board 1032 may also have an overcurrent protection circuit (not shown), an overvoltage protection circuit (not shown), and the like.

Optionally, the bottom plate 1031 and the support columns 1034 may be detachably connected by a snap structure, a thread structure, a detachable adhesive structure, a tight-fit structure, a bolt structure, a screw structure, or the like. For example, the end of the support post 1034 connected to the bottom plate 1031 has a screw thread, and the bottom plate 1031 and the support post 1034 are detachably connected by a screw thread structure.

In order to enhance the heat dissipation performance of the cover 102 and to make the cover 102 more portable, as shown in fig. 6, the cover 102 is provided with a handle 10252 and an air outlet 10251. The air outlet 10251 is used to dissipate heat from the battery 201 and the circuit board 1032. Alternatively, the number of the handles 10252 may be plural, and the number of the air outlets 10251 may also be plural. For example, the handles 10252 are disposed on two opposite sides of the ring side of the cover 102, and the air outlets 10251 are disposed on the other two opposite sides of the ring side of the cover 102, so as to effectively improve the heat dissipation performance and portability of the cover 102.

To sum up, the lid subassembly and energy storage equipment that this application provided carry out the shutoff through sealed convex part to the connecting hole with leg joint, can effectively reduce impurity and enter into the connecting hole, reduce impurity etc. and to the fixed connection's of bracket component and lid influence, for prior art, have good steadiness and gas tightness to the bracket component in the lid subassembly can be dismantled removable, can make things convenient for the assembly of lid subassembly. The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. A cover assembly, comprising:

the cover comprises a cover body, wherein one side of the cover body is provided with a groove, and the bottom wall of the groove is provided with a through connecting hole;

a seal, the seal comprising:

the sealing main body is matched with the groove, is arranged in the groove and is in sealing connection with the side wall of the groove;

the sealing convex part is connected with one side of the sealing main body facing the bottom wall of the groove and matched with the connecting hole; when the sealing main body is installed in the groove, the sealing convex part can be simultaneously inserted into the connecting hole and is in sealing connection with the hole wall of the connecting hole.

2. The cover assembly of claim 1,

the sealing convex part is arranged in a columnar shape, the diameter of at least part of column sections of the sealing convex part is larger than or equal to that of the connecting hole, and at least part of column sections are inserted into the connecting hole to be in interference fit with the connecting hole.

3. The cover assembly of claim 2,

the sealing convex part comprises a first column section and a second column section which are connected with each other, one end of the first column section is fixedly connected with the sealing main body, the other end of the first column section is fixedly connected with the second column section, the diameter of the second column section is larger than that of the first column section, the diameter of the second column section is larger than or equal to that of the connecting hole, and at least part of the second column section is inserted into the connecting hole and is in interference fit with the connecting hole; wherein the diameter of the second column section gradually decreases in a direction away from the first column section.

4. The cover assembly of any one of claims 1-3,

the recess with sealed main part all is cyclic annular setting, sealed convex part with the quantity of connecting hole is a plurality of, and is a plurality of sealed convex part one-to-one inserts and arranges in a plurality of in the connecting hole.

5. The cover assembly of claim 1,

the lateral wall of recess has further seted up spacing hole, the sealing member further including connect in sealed main part's spacing arch, spacing arch inlays to be located spacing downthehole, in order to restrict sealed main part is in remove in the recess.

6. The cover assembly of claim 5,

the limiting hole and the connecting hole are respectively communicated with the groove, when the sealing main body is accommodated in the groove, the sealing convex part is inserted into the connecting hole, and the limiting bulge is embedded in the limiting hole.

7. The cover assembly of claim 6,

the cover body comprises a bottom wall surface and two side wall surfaces which are mutually connected to enclose the groove, the bottom wall surface is opposite to the support assembly, the connecting hole is formed in the bottom wall surface, the limiting hole is formed in the two side wall surfaces, and the limiting bulge is arranged on the side wall of the sealing main body opposite to the side wall surfaces;

the two side wall surfaces are oppositely arranged and are respectively connected with the bottom wall surface, and the two side walls of the sealing main body back to the back are correspondingly provided with the limiting bulges so as to correspond to the two side wall surfaces and be embedded in the limiting holes to be matched with the side wall surfaces.

8. The cover assembly of claim 7,

the recess is annular groove-shaped setting, and is at least one the lateral wall face is provided with a plurality ofly along circumference interval spacing hole, sealed main part is cyclic annular setting correspondingly, sealed main part at least one the lateral wall is provided with along circumference corresponding interval spacing arch, spacing arch one-to-one inlays to be located correspondingly spacing downthehole.

9. An energy storage device, comprising:

the cover assembly of any one of claims 1-8;

the bracket component is arranged on one side of the cover body, which is far away from the sealing element;

the support component is provided with a connecting column, and the connecting column is used for matching with the connecting hole to connect the support component and the cover body.

10. The energy storage device of claim 9,

the bracket component comprises a bottom plate and a circuit board installed on the bottom plate, the connecting column is fixedly connected to one side of the cover body facing the bottom plate, and at least part of the connecting column is inserted into the connecting hole and is fixedly connected with the cover body through a fastener.

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