CN213692197U - Energy storage device and electronic equipment - Google Patents

Energy storage device and electronic equipment Download PDF

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Publication number
CN213692197U
CN213692197U CN202022576763.4U CN202022576763U CN213692197U CN 213692197 U CN213692197 U CN 213692197U CN 202022576763 U CN202022576763 U CN 202022576763U CN 213692197 U CN213692197 U CN 213692197U
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CN
China
Prior art keywords
energy storage
storage device
electrically connected
electrical connection
end cap
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Active
Application number
CN202022576763.4U
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Chinese (zh)
Inventor
廖伟鑫
童焰
李正东
陈志勇
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Guangdong Mic Power New Energy Co Ltd
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Guangdong Mic Power New Energy Co Ltd
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Priority to CN202022576763.4U priority Critical patent/CN213692197U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model relates to an energy storage device and an electronic device, wherein the energy storage device comprises a shell and a protection circuit component; the shell forms an accommodating groove, an opening of the accommodating groove is provided with an end cover, the end cover is used as a first electrode of the energy storage device, and the shell is used as a second electrode of the energy storage device; the protection circuit assembly comprises an assembly body, a first electric connection portion and a second electric connection portion are arranged on the assembly body, the assembly body is arranged on the end cover, the end cover is electrically connected with the first electric connection portion, and the shell is electrically connected with the second electric connection portion. The utility model discloses a technological effect lies in, through setting up protection circuit subassembly and energy memory's casing into a body structure, makes the space between the component arrange compacter, when setting up this energy memory in electronic equipment, can effectively improve space utilization.

Description

Energy storage device and electronic equipment
Technical Field
The utility model relates to the field of electronic technology, more specifically, the utility model relates to an energy storage device and electronic equipment.
Background
Electronic devices usually need to use an energy storage device to provide power, and different components are arranged in the electronic devices to perform corresponding functions. Each part occupies spaces with different sizes in the electronic equipment, the energy storage device occupies more spaces in the electronic equipment, and the spaces occupied by other elements in the electronic equipment are reduced.
Therefore, a new technical solution is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an energy memory's new technical scheme.
According to one aspect of the present invention, there is provided an energy storage device comprising a housing and a protection circuit assembly;
the shell forms an accommodating groove, an opening of the accommodating groove is provided with an end cover, the end cover is used as a first electrode of the energy storage device, and the shell is used as a second electrode of the energy storage device;
the protection circuit assembly comprises an assembly body, wherein a first electric connection portion and a second electric connection portion are arranged on the assembly body, the assembly body is arranged on the end cover, the end cover is electrically connected with the first electric connection portion, and the shell is electrically connected with the second electric connection portion.
Optionally, the protection circuit assembly further includes a first connector and a second connector, the assembly body has a first surface and a second surface opposite to the first surface, the first surface is opposite to the end cap, the first electrical connection portion is located on the first surface, and the second electrical connection portion is located on the second surface;
the first connecting piece is respectively and electrically connected with the end cover and the first electric connection part, and the second connecting piece is respectively and electrically connected with the shell and the second electric connection part.
Optionally, the first connecting element includes a first portion, a second portion, and a first bending portion connected to the first portion and the second portion, respectively, the first portion is electrically connected to the end cap, the second portion is electrically connected to the first electrical connection portion, the first portion is attached to the first surface, the second portion is attached to the end cap, and the first portion is opposite to the second portion.
Optionally, the second connector includes a third portion, a fourth portion, and a second bending portion respectively connected to the third portion and the fourth portion, the third portion is electrically connected to the second electrical connection portion, the fourth portion is electrically connected to the housing, the third portion is attached to the second surface, and the fourth portion is attached to the housing.
Optionally, the end cover includes an end cover body and a protrusion protruding from the end cover body, the end cover body is disposed at the opening of the accommodating groove, and the first connecting member is electrically connected to the protrusion.
Optionally, the end cover further comprises an insulating gasket, wherein the insulating gasket is provided with an avoiding area, the protruding portion is located in the avoiding area, and the insulating gasket is located between the first connecting piece and the end cover body.
Optionally, the first connecting piece and the electric connection part of the first electric connection part are provided with first welding points, the first welding points comprise welding points of laser welding or welding points of electric resistance welding, the first connecting piece and the electric connection part of the end cover are provided with second welding points, and the second welding points comprise welding points of laser welding or welding points of electric resistance welding.
Optionally, the assembly body does not protrude beyond the edge of the end face where the end cap is located.
Optionally, the thickness of the protection circuit component is less than 3.0 mm.
According to another aspect of the present invention, there is provided an electronic apparatus including the energy storage device as described in any one of the above.
The utility model discloses a technological effect lies in, through setting up protection circuit subassembly and energy memory's casing into a body structure, makes the space between the component arrange compacter, when setting up this energy memory in electronic equipment, can effectively improve space utilization.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of an energy storage device according to an embodiment of the present disclosure.
Fig. 2 is a schematic top view of an energy storage device in an embodiment of the present disclosure.
Fig. 3 is a cross-sectional view of an energy storage device in an embodiment of the present disclosure.
Fig. 4 is a partially enlarged view of fig. 3.
Fig. 5 is an exploded view of an energy storage device in one embodiment of the present disclosure.
Reference numerals:
1-shell, 10-end cover, 11-bulge, 2-component body, 21-first electric connection part, 22-second electric connection part, 23-third electric connection part, 24-fourth electric connection part, 25-component, 3-first connecting piece, 31-first part, 32-second part, 33-first bent part, 4-second connecting part, 41-third part, 42-fourth part, 420-fourth welding point, 43-second bent part and 5-insulating gasket.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In one embodiment of the present disclosure, an energy storage device is provided, as shown in fig. 1-5, which includes a housing 1 and a protection circuit assembly. The shell 1 forms an accommodating groove, an end cover 10 is arranged at an opening of the accommodating groove, the end cover 10 serves as a first electrode of the energy storage device, and the shell 1 serves as a second electrode of the energy storage device.
The protection circuit assembly comprises an assembly body 2, a first electric connection portion 21 and a second electric connection portion 22 are arranged on the assembly body 2, the assembly body 2 is arranged on the end cover 10, the end cover 10 is electrically connected with the first electric connection portion 21, and the shell 1 is electrically connected with the second electric connection portion 22.
In this embodiment, the structure of the protection circuit assembly is provided at the end of the housing 1 of the energy storage device. The structure of the protection circuit assembly is integrated on the housing 1, increasing the compactness of the structure. Compared with the prior art, the layout of the protection circuit assembly and the energy storage device occupies smaller space, so that the space utilization rate of the interior of the electronic equipment where the energy storage device is located is improved. Other elements can be arranged in the space where the protection circuit assembly is arranged originally, or elements in the electronic equipment can be rearranged, so that the space of the part is reduced, and the space occupied by the electronic equipment is reduced.
The package body 2 is a circuit board integrated with a protection circuit, and the component 25 is an element provided on the package body 2 and protruding from the surface of the package body 2. The first electrical connection 21 and the second electrical connection 22 provided on the assembly body 2 are used for connecting to the electrodes of the energy storage device. The end cap 10 is electrically connected to the first electrical connection portion 21 as a first electrode, and the case 2 is electrically connected to the second electrical connection portion 22 as a second electrode. The first electrode and the second electrode each correspond to one of the positive electrode and the negative electrode. For example, the end cap 10 is conducted with the positive electrode of the battery cell in the energy storage device to make the first electrode as the positive electrode, and the shell 1 is conducted with the negative electrode of the battery cell in the energy storage device to make the second electrode as the negative electrode.
The assembly body 2 is further provided with a third electrical connection portion 23 and a fourth electrical connection portion 24, and the third electrical connection portion 23 and the fourth electrical connection portion 24 are used for being electrically connected with an external circuit, so that power is supplied to the external circuit other than the energy storage device or the energy storage device is supplied from the external circuit. For example, for completing a circuit within the electronic device to provide power to the electronic device. The first electrical connection portion 21, the second electrical connection portion 22, the third electrical connection portion 23, and the fourth electrical connection portion 24 may be pad-formed connection structures.
In one embodiment, as shown in fig. 3 and 4, the protection circuit assembly further includes a first connecting member 3 and a second connecting member 4, the assembly body 2 has a first surface and a second surface opposite to the first surface, the first surface is opposite to the end cap 10, the first electrical connection portion 21 is located on the first surface, and the second electrical connection portion 22, the third electrical connection portion 23 and the fourth electrical connection portion 24 are located on the second surface.
The first connecting piece 3 is electrically connected with the end cover 10 and the first electric connecting part 21 respectively, and the second connecting piece 4 is electrically connected with the shell 1 and the second electric connecting part 22 respectively.
The first connecting member 3 is located between the first surface and the end cap 10, and electrically connects the end cap 10 and the first electrical connection portion 21. The first surface faces the side where the end cover 10 is located, so that the structure of the first connecting piece 3 is located between the assembly body 2 and the end cover 10, and the first connecting piece 3 can be prevented from occupying more space. The second connector 4 electrically connects the second electrical connection portion 22 of the second surface with the housing 1, which facilitates the arrangement of the second connector 4.
For example, the housing 1 includes a bottom plate and a side wall surrounding the bottom plate, and the bottom plate and the side wall form a receiving groove. The second connecting member 4 is electrically connected to the second electrical connection portion 22 and then bent downward to be electrically connected to the sidewall.
The electric connection structure formed by the first connecting piece 3 and the second connecting piece 4 in the embodiment is simpler, is more convenient in the implementation process, and does not occupy too much space.
In one embodiment, as shown in fig. 4, the first connecting member 3 includes a first portion 31, a second portion 32 and a first bending portion 33 respectively connected to the first portion 31 and the second portion 32, the first portion 31 is electrically connected to the end cap 10, the second portion 32 is electrically connected to the first electrical connection portion 21, the first portion 31 is attached to the first surface, the second portion 32 is attached to the end cap 10, and the first portion 31 is opposite to the second portion 32.
In this embodiment, the first connector 3 forms a stable connection between the first electrical connection portion 21 and the end cap 10. The first portion 31 is attached to the first surface and electrically connected to the first electrical connection portion 21, and the second portion 32 is attached to the end cap 10 and electrically connected to the end cap 10. The first portion 31 and the second portion 32 are distributed in a stacked configuration, and the first portion 31 and the second portion 32 are connected by a first bend 33.
The structure of the first connecting member 3 makes the electrical connection structure between the first electrical connection portion 21 and the end cap 10 simpler and more convenient to operate, so that the electrical connection between the first electrical connection portion 21 and the end cap 10 is formed.
Optionally, the first connecting member 3 is of unitary construction. During the process of mounting the first connector 3, the first portion 31, the second portion 32 and the first bent portion 33 are spread apart. When mounted, the module body 2 is positioned against the first portion 31 to connect the first portion 31 to the first electrical connection portion 21. The side of the end cap 10 that is adjacent to the second portion connects the second portion 32 to the end cap 10. And then bent from the position of the first bent portion 33, so that the first surface of the module body 2 is opposite to the end cap 10. This enables the pack body 2 to be compactly arranged on the end cap 10 with the first portion 31 and the second portion 32 facing each other to form a laminated structure. And, sufficient operation space can be secured in the process of making connection.
For example, the first portion 31 is connected with the first electrical connection portion 21, and the second portion 32 is connected with the end cap 10. The assembly body 2 is then placed on the end cap 10 with the first portion 31 facing the second portion 32 to form a stacked arrangement. Finally, the first bent part 33 is connected to the first portion 31 and the second portion 32, respectively, and the first bent part 33 can reinforce the connection structure of the first portion 31 and the second portion 32 in this embodiment.
For example, the first bent portion 33 has a U-shaped structure, the first portion 31 is connected to one side of the U-shaped structure, and the second portion 32 is connected to the other side of the U-shaped structure. After the first connecting member 3 is connected to the end cap and the assembly body 2, the relative positions of the first portion 31 and the second portion 32 can be adjusted by the U-shaped structure.
For example, by moving the first portion 31 in the direction of the plane of the second portion 32, the position of the U-shaped structure on the first connecting member 3 changes, and the first portion 31 shortens or lengthens relative to the second portion 32. For example, moving first portion 31 toward the opening of the U-shaped structure lengthens first portion 31 and shortens second portion 32. Conversely, moving first portion 31 in a direction opposite to the direction of the opening of the U-shaped structure shortens first portion 31 and lengthens second portion 32. In response to the movement of the first portion 31, the assembly body 2 moves on the end face of the energy storage device, thereby adjusting the position of the assembly body 2. This can increase the assembly accuracy and also allow for adjustment after assembly. As shown in fig. 4, when the module body 2 needs to be adjusted in the left-right direction, the U-shaped first bent portion 33 enables the module body 2 to be more easily moved.
In one embodiment, the second connecting member 4 includes a third portion 41, a fourth portion 42 and a second bending portion 43 respectively connected to the third portion 41 and the fourth portion 42, the third portion 41 is electrically connected to the second electrical connection portion 22, the fourth portion 42 is electrically connected to the housing 1, the third portion 41 is attached to the second surface, and the fourth portion 42 is attached to the housing 1.
In this embodiment, the third portion 41 of the second connecting member 4 is attached to the second electrical connecting portion 22, the fourth portion 42 is attached to the housing 1, and the second bent portion 43 is disposed along the edge of the assembly body 2 and forms a connection between the third portion 41 and the fourth portion 42.
Alternatively, the second connection portion 4 is of unitary construction. In the mounting process, the third portion 41 is connected to the second electrical connection portion 22, and then the second connection member 4 is bent to make the second bent portion 43 fit to the edge of the device body 2. Finally the fourth portion 42 is connected to the housing 1. Or the fourth portion 42 and the housing 1 are connected first and then bent toward the second surface, so that the third portion 41 is connected to the second electrical connection portion 22. For example, the second bending portion 43 has an L-shaped structure, and one side of the L-shaped structure is located on the second surface corresponding to the third portion 41 and connected to the second electrical connection portion 22. The other side of the L-shaped structure corresponds to the fourth portion 42 and is electrically connected to the housing 1, the second bent portion 43 corresponds to the bent portion of the L-shaped structure connecting the two sides, and the second bent portion 43 and the edge of the module body 2 can form a compact structural layout.
In one embodiment, the end cap 10 includes an end cap body and a protrusion 11 protruding from the end cap body, the end cap body is disposed at the opening of the receiving groove, and the first connector 3 is electrically connected to the protrusion 11.
In this embodiment, the protrusion 11 on the end cap 10 is conducted with an electrode of a cell of the energy storage device to form a first electrode. For example, the protruding portion 11 is in conduction with the positive electrode of the cell.
The bulge 11 protrudes from the end cover body, is conveniently connected with the first connecting piece 3, improves the operability during connection, and can improve the connection strength.
In one embodiment, as shown in fig. 4, the energy storage device further includes an insulating gasket 5, the insulating gasket 5 is provided with an avoidance area, the protrusion 11 is located in the avoidance area, and the insulating gasket 5 is located between the first connecting member 3 and the end cover body.
In this embodiment, the insulating gasket 5 can form insulation between the first connecting member 3 and the end cover body, so as to prevent the first connecting member 3 from being close to the housing 1 to cause short circuit. The protrusion 11 protrudes from the escape area to form a connection with the first connector 3, and the insulating gasket 5 is located at the end of the housing 1 facing the assembly body 2 and covers the area outside the protrusion 11, thereby forming an effective insulation with the third connector 3.
For example, the second portion 32 is stacked on the side of the insulating spacer 5 facing away from the housing 1, and a part of the second portion 32 is electrically connected to the protrusion 11 located in the relief area.
In one embodiment, the electrical connection portion of the first connector 3 and the first electrical connection portion 21 has a first welding point including a welding point of laser welding or a welding point of resistance welding, and the electrical connection portion of the first connector 3 and the end cap 10 has a second welding point including a welding point of laser welding or a welding point of resistance welding.
The welding spots welded by laser welding or resistance welding can not protrude out of the surface of the welding spot part, so that the thickness increased at the welding spot position can be effectively avoided, and more space is prevented from being occupied. For example, the direction in which the protection circuit module and the case 1 are stacked is the thickness direction, and the increase in thickness can be avoided by laser welding or resistance welding.
In this embodiment, the first solder point formed by the first connecting member 3 and the electrical connection portion of the first electrical connection portion 21 does not increase the thickness of the connection portion, for example, the thickness of the electrical connection portion of the first portion 31 and the first electrical connection portion 21 does not increase due to the structure of the connection. The second welding point formed by the first connecting piece 3 and the electric connecting part of the end cover 10 does not increase the thickness of the connecting part, for example, the thickness of the second part 32 and the electric connecting part of the end cover 10 does not increase the thickness due to the connecting structure. This can effectively reduce the thickness of the first connecting member 3 formed between the assembly body 2 and the end cap 10.
In one embodiment, the electrical connection portion of the second connection member 4 and the case 1 has a fourth welding point 420, and the fourth welding point 420 is a welding point of laser welding or a welding point of resistance welding. For example, in fig. 1, the electrical connection portion of the fourth portion 42 and the housing 1 has a fourth solder joint 420, and the fourth solder joint 420 prevents the formed electrical connection structure from protruding out of the surface of the fourth portion 42, thereby avoiding increasing the lateral thickness of the energy storage device.
The electrical connection portion of the second connecting member 4 and the second electrical connection portion 22 has a third welding point, which is a welding point of laser welding or a welding point of resistance welding. For example, the third portion 41 and the electrical connection portion of the second electrical connection portion 22 have a third pad, so that the formed electrical connection structure does not protrude from the third portion 41, thereby avoiding increasing the thickness.
In one embodiment, the assembly body 2 does not protrude beyond the edge of the end face where the end cap 10 is located.
In this embodiment, the assembly body 2 is held within the range of the end face where the end cap 10 is located, and an increase in the dimension of the energy storage device in the width direction can be effectively avoided. For example, it is possible to avoid increasing the size of the cylindrical battery in the radial direction.
In one embodiment, the thickness of the protection circuit component is less than 3.0 mm.
In this example, the protection circuit components that increase on casing 1 form an organic whole structure, can control the thickness that increases to be less than 3.0mm, makes the energy memory of this disclosure effectively utilize energy memory's installation space, reduces to the space in the electronic equipment and occupies.
Optionally, the thickness of the protection circuit component is less than or equal to 1.8 mm.
The thickness of the protective circuit assembly can be kept less than or equal to 1.8mm, so that the energy storage device disclosed by the disclosure has a more compact structure, and the occupied space is further reduced.
In an embodiment of the present disclosure, there is provided an electronic device including the energy storage apparatus according to any one of the above embodiments.
In this embodiment, the energy storage device in the present disclosure is provided in the electronic device, and a space capable of accommodating the energy storage device is provided in the electronic device, so that it is not necessary to provide an additional installation space for protecting the circuit component. Compared with the energy storage device and the protection circuit component which are separately arranged in the prior art, the structure is more compact, and the occupied space is reduced. Therefore, the space utilization rate of the electronic equipment can be improved, and the volume of the electronic equipment can be reduced.
Alternatively, the energy storage device in the present disclosure may be a cylindrical battery, a square battery, a button battery, or the like, which needs to be provided with a protection circuit.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. An energy storage device, comprising a housing and a protection circuit assembly;
the shell forms an accommodating groove, an opening of the accommodating groove is provided with an end cover, the end cover is used as a first electrode of the energy storage device, and the shell is used as a second electrode of the energy storage device;
the protection circuit assembly comprises an assembly body, wherein a first electric connection portion and a second electric connection portion are arranged on the assembly body, the assembly body is arranged on the end cover, the end cover is electrically connected with the first electric connection portion, and the shell is electrically connected with the second electric connection portion.
2. The energy storage device of claim 1, wherein the protection circuit assembly further comprises a first connector and a second connector, the assembly body having a first surface and a second surface opposite the first surface, the first surface being opposite the end cap, the first electrical connection being located on the first surface, the second electrical connection being located on the second surface;
the first connecting piece is respectively and electrically connected with the end cover and the first electric connection part, and the second connecting piece is respectively and electrically connected with the shell and the second electric connection part.
3. The energy storage device of claim 2, wherein the first connection element comprises a first portion, a second portion, and a first bending portion connected to the first portion and the second portion, respectively, the first portion is electrically connected to the end cap, the second portion is electrically connected to the first electrical connection portion, the first portion is attached to the first surface, the second portion is attached to the end cap, and the first portion is opposite to the second portion.
4. The energy storage device of claim 2, wherein the second connector comprises a third portion, a fourth portion and a second bending portion respectively connected to the third portion and the fourth portion, the third portion is electrically connected to the second electrical connection portion, the fourth portion is electrically connected to the housing, the third portion is attached to the second surface, and the fourth portion is attached to the housing.
5. The energy storage device as defined in claim 2, wherein the end cap includes an end cap body and a protrusion protruding from the end cap body, the end cap body is disposed at the opening of the receiving groove, and the first connector is electrically connected to the protrusion.
6. The energy storage device as defined in claim 5, further comprising an insulating spacer, wherein the insulating spacer is provided with an avoidance area, the protruding portion is located in the avoidance area, and the insulating spacer is located between the first connecting member and the end cover body.
7. The energy storage device of claim 2, wherein the electrical connection of the first connector to the first electrical connection has a first weld point, the first weld point comprising a weld point of a laser weld or a weld point of an electrical resistance weld, and the electrical connection of the first connector to the end cap has a second weld point, the second weld point comprising a weld point of a laser weld or a weld point of an electrical resistance weld.
8. The energy storage device of claim 1, wherein the assembly body does not protrude beyond the edge of the end face where the end cap is located.
9. The energy storage device of claim 1, wherein the thickness of the protection circuit component is less than 3.0 mm.
10. An electronic device, characterized in that it comprises an energy storage device according to any one of claims 1-9.
CN202022576763.4U 2020-11-09 2020-11-09 Energy storage device and electronic equipment Active CN213692197U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022576763.4U CN213692197U (en) 2020-11-09 2020-11-09 Energy storage device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022576763.4U CN213692197U (en) 2020-11-09 2020-11-09 Energy storage device and electronic equipment

Publications (1)

Publication Number Publication Date
CN213692197U true CN213692197U (en) 2021-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022576763.4U Active CN213692197U (en) 2020-11-09 2020-11-09 Energy storage device and electronic equipment

Country Status (1)

Country Link
CN (1) CN213692197U (en)

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