CN109786611B - Battery device and electronic apparatus - Google Patents
Battery device and electronic apparatus Download PDFInfo
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- CN109786611B CN109786611B CN201910107887.7A CN201910107887A CN109786611B CN 109786611 B CN109786611 B CN 109786611B CN 201910107887 A CN201910107887 A CN 201910107887A CN 109786611 B CN109786611 B CN 109786611B
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- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000011324 bead Substances 0.000 claims description 28
- 238000004880 explosion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010329 laser etching Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a battery device and an electronic device. The battery device includes: the battery pack comprises a first shell, wherein the first shell comprises a first cylindrical side wall, a top cover and a second shell, the second shell comprises a second cylindrical side wall and a bottom cover, a concave structure is formed at least locally at a connecting part of the second cylindrical side wall and the bottom cover, the first cylindrical side wall is sleeved outside the second cylindrical side wall, an insulating sealing piece is arranged between the first cylindrical side wall and the second cylindrical side wall, a part, close to an open end, of the first cylindrical side wall is bent to one side of the concave structure along a circumferential direction locally to form a local curled edge, the local curled edge and the concave structure form a clamping connection, when the internal pressure of the battery pack reaches a set value, the first shell is locally deformed, so that the sealing structure between the first shell and the second shell is damaged, and pressure is relieved.
Description
Technical Field
The present invention relates to the technical field of energy storage devices, and more particularly, to a battery device and an electronic apparatus.
Background
Battery power is typically required in electronic products. For waterproof and dustproof requirements, the existing battery is generally integrally sealed, and the structural strength of various parts of the shell is similar. However, due to defects in battery design or manufacture, the battery frequently catches fire and even explodes at the time of abnormal use or overcharge. For the safety of the battery, it is necessary that the casing breaks the sealing property when the internal pressure is too high, so that the pressure relief can be performed in time.
Chinese patent application CN103262292a provides a solution. In this embodiment, the button cell comprises two half-shells and a seal. The two half-shells are connected to each other by press-fitting. The seal is located between the two half-shells. The two half-shells may also be connected to each other in an interlocking manner in the axial direction. The two half-shells have double-walled regions which overlap each other in the axial direction. The two half-shells are moved axially relative to each other under the effect of the pressure inside the shells, so that the width of the double-walled region is reduced. Holes are provided in the outer half shells. When the hole is in communication with the lumen, pressure relief is performed through the hole.
However, the axial distance of the button cell is often fixed during installation, which makes axial movement of the two half-shells difficult, pressure release failure is easy to cause, and the cell needs larger displacement to form protection, so that the reaction speed of the protection is relatively slow, and the accumulated energy is more. Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
It is an object of the present invention to provide a new solution for a battery device.
According to a first aspect of the present invention, a battery device is provided. The battery device includes: the battery device comprises a first shell, wherein the first shell comprises a first cylindrical side wall, a top cover and a second shell, the top cover is arranged at one end of the first cylindrical side wall, the second shell comprises a second cylindrical side wall and a bottom cover arranged at one end of the second cylindrical side wall, a concave structure is formed at least partially at the connecting part of the second cylindrical side wall and the bottom cover, the first shell and the second shell are spliced together in a mode that the opening ends are opposite, the first cylindrical side wall is sleeved on the outer side of the second cylindrical side wall, an insulating sealing piece is arranged between the first cylindrical side wall and the second cylindrical side wall, the part, close to the opening end, of the first cylindrical side wall is bent to one side of the concave structure along the circumferential direction to form a local curled edge, the local curled edge and the concave structure form a clamping connection, and when the internal pressure of the battery device reaches a set value, the first shell is deformed locally, so that a sealing structure between the first shell and the second shell is damaged, and pressure is relieved.
Optionally, an explosion-proof slot is formed on the bottom cover and/or the top cover.
Optionally, a pressure relief hole is formed in the bottom cover and/or the top cover, a sealing cover is arranged on the pressure relief hole, and the structural strength of the sealing cover is smaller than that of the top cover or the bottom cover.
Optionally, an explosion-proof groove is formed in the sealing cover.
Optionally, the depth of the explosion-proof groove is 30% -90% of the thickness of the cover body.
Optionally, the explosion-proof groove is annular or linear.
Optionally, the explosion-proof groove is in the shape of a positive electrode symbol or a negative electrode symbol.
Optionally, the partial bead is one or more.
Optionally, a plurality of notches are formed at a portion of the first cylindrical sidewall near the open end, and a tongue portion is formed between adjacent notches, and the tongue portion is bent toward one side of the concave structure to form a local curled edge.
According to another embodiment of the present disclosure, an electronic device is provided. The electronic equipment comprises the battery device.
According to one embodiment of the present disclosure, in the battery device, since the partial bead is provided at a portion of the first cylindrical sidewall near the open end in the circumferential direction, the structure of this arrangement is relatively unstable with respect to the manner in which the bead is formed entirely in the circumferential direction, and when the internal pressure of the battery device increases to the set value, the pressing region of the partial bead is preferentially deformed, so that the first case and the second case can be timely deformed without generating a large axial displacement under a small pressure under the condition that the sealability of the battery device is satisfied, thereby breaking the sealing structure to release the pressure, and thus the safety performance of the battery is more excellent.
In addition, the first shell and the second shell are decompressed through the deformation of the first shell, so that the large-scale shell separation is not formed, and the damage to the outside is less.
Other features of the present invention and its advantages 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 view of a battery device according to an embodiment of the present disclosure.
Fig. 2 is a cross-sectional view of a battery device according to one embodiment of the present disclosure.
Fig. 3 is a cross-sectional view of a second battery device according to one embodiment of the present disclosure.
Fig. 4 is a top view of a second battery device according to one embodiment of the present disclosure.
Fig. 5 is a cross-sectional view of a third battery device according to one embodiment of the present disclosure.
Fig. 6 is a top view of a third battery device according to one embodiment of the present disclosure.
Fig. 7-10 are schematic diagrams of battery device pressure relief according to one embodiment of the present disclosure.
Reference numerals illustrate:
11: a first cylindrical sidewall; 12: a top cover; 13: a bottom cover; 14: an explosion-proof tank; 15: a pressure relief hole; 16: sealing cover; 17: an insulating ring; 18: a notch; 19: a tongue-shaped portion; 20: a recessed structure; 21: local hemming; 22: a second cylindrical side wall; 23: a battery cell; 24: and (5) a sealing structure.
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: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
According to one embodiment of the present disclosure, a battery device is provided. As shown in fig. 1-2, the battery device is a primary or secondary battery that includes a first housing and a second housing that snap together. The first housing and the second housing are both of a metallic material, such as an aluminum alloy, stainless steel, or the like. The first case and the second case serve as two electrodes of the battery device, respectively.
As shown in fig. 1 to 3, the first housing includes a first cylindrical side wall 11 and a top cover 12 provided at one end of the first cylindrical side wall 11. The end of the first cylindrical side wall 11 opposite to the top cover 12 is an open end. The second housing includes a second cylindrical sidewall 22 and a bottom cover 13 disposed at one end of the second cylindrical sidewall 22. The end of the second cylindrical side wall 22 opposite to the bottom cover 13 is an open end.
As shown in fig. 2, 3 and 5, a recess structure 20 is formed at least partially at the connection portion of the second cylindrical sidewall 22 and the bottom cover 13. The connection locations are located near the corners. Of course, for ease of installation, the connection points may be a set distance from the corners, or may be formed directly at the corners. The recess structure 20 is an annular groove or an intermittent groove provided around the bottom cover 13.
The first housing and the second housing are plugged together with the open ends facing each other. The first cylindrical side wall 11 is fitted over the second cylindrical side wall 22. An insulating seal is provided between the first cylindrical side wall 11 and the second cylindrical side wall 22. For example, the inner diameter of the first cylindrical sidewall 11 is larger than the outer diameter of the second cylindrical sidewall 22. The insulating seal is an insulating ring 17. The insulating ring 17 is made of plastic or rubber. The material can have good insulation and sealing effects.
For example, as shown in fig. 7, the insulating ring 17 forms a U-shaped portion at a position located at the sealing structure 24. The U-shaped part is coated at the opening end of the second shell. The inner surface and the outer surface of the U-shaped part respectively have larger contact areas with the two shells, so that the sealing effect of the sealing structure is better. The seal structure 24 refers to a sealing structure formed between the open end of the second housing and the top cover 12 of the first housing.
Before assembly, the battery cell 23 is placed in the second housing, and the insulating ring 17 is sleeved outside the second cylindrical side wall 22. The battery cell 23 may be, but is not limited to, a lithium ion battery cell 23, a lithium metal battery cell 23, and the like. Then, the open ends of the two housings are opposed, and the second cylindrical side wall 22 is inserted into the first cylindrical side wall 11. A closed cavity is formed inside the first housing and the second housing. The first cylindrical side wall 11 is pressed in a direction approaching the second cylindrical side wall 22 for better sealing.
As shown in fig. 3, 4 and 6 to 10, a portion of the first cylindrical side wall 11 near the open end is bent in a partial circumferential direction toward the concave structure 20 side to form a partial bead 21. The partial bead 21 forms a snap fit with the recessed feature 20. The local curled edge is easy to deform when being locally pressed, and the first shell is locally deformed when the internal pressure of the battery device reaches a set value, so that a sealing structure between the first shell and the second shell is damaged, and pressure relief is performed.
For example, the first housing is locally deformed in the radial direction. The radial direction is shown by the arrow in fig. 10. For example, when the pressure in the cavity reaches 2MPa, the local bead 21 is radially away from the recess 20, eventually releasing the snap-fit, so that the seal 24 of the first and second housings is broken for pressure relief.
As shown in fig. 9, when the pressure in the chamber reaches 2MPa, the second cylindrical side wall 22 maintains its original shape. The first cylindrical sidewall 11 is deformed at the open end due to the separation of the partial bead 21 from the concave structure 20. The deformation of the open end of the first cylindrical sidewall 11 causes deformation of the portion adjacent to the top cover 12, thereby breaking the sealing structure 24 and forming pores. The internal gas escapes from the destruction.
For example, as shown in fig. 9 to 10, the first housing is deformed by the internal pressure, and its cross section is changed from a circular shape to a shuttle shape, an elliptical shape, or the like. The two partial beads 21 move away from each other, eventually effecting a separation from the recess 20 and a destruction of the first shell root seal.
Of course, the number of the partial beads 21 is not limited to 2 or 3, and may be set according to actual needs by those skilled in the art.
In this example, since the partial bead 21 is provided at a part of the first cylindrical side wall 11 near the open end in the circumferential direction, the structure of this arrangement is relatively unstable with respect to the manner in which the bead is formed entirely in the circumferential direction, and when the internal pressure of the battery device increases to the set value, the pressing region of the partial bead will be deformed preferentially, so that the first case and the second case can be deformed timely without generating a large axial displacement under a small pressure to break the sealing structure and release pressure under the condition that the sealability of the battery device is satisfied, and thus the safety performance of the battery is more excellent.
In addition, the battery device is decompressed by the deformation of the first shell, so that the shell is not separated greatly, and the damage to the outside is less.
In addition, the partial bead 21 is separated from the concave structure 20 at least in the radial direction, so that the pressure release can be more rapid, and the internal backlog energy is less and safer.
In one example, as shown in fig. 1, 4 and 6, the partial beads 21 are multiple (e.g., 3). For example, a plurality of partial beads 21 are distributed with respect to the open end of the first housing. In this example, the plurality of partial beads 21 make the explosion proof level the same at each position of the first case and the second case. The reliability and stability of the battery device are better.
For example, the partial beads 21 are uniformly distributed with respect to the open end of the first housing, so that the first housing and the second housing are fixed more uniformly in the circumferential direction, and the explosion-proof level is higher.
Of course, it is also possible that the plurality of partial beads 21 are unevenly distributed with respect to the open end of the first housing.
In other examples, only one partial bead 21 may be provided. The arrangement mode can also have good pressure relief and explosion prevention effects. The seal between the first and second housings is achieved by means of the mutual compression of the first cylindrical side wall 11, the insulating ring 17 and the second cylindrical side wall 22.
There are various ways in which the partial bead 21 may be provided. In one example, as shown in fig. 1, a plurality of notches 18 are provided in a portion of the first cylindrical side wall 11 near the open end. For example, the notch 18 is formed by laser etching, plasma cutting, stamping, or the like. Adjacent notches 18 form tongue 19 therebetween. The left and right sides of the tongue-shaped portion 19 are separated from other portions of the first cylindrical side wall 11. The tongue 19 is bent to the side of the recess 20 to form a partial bead 21. For example, the tongue portion 19 is pressed toward the concave structure 20 by pressing, so that the tongue portion 19 is attached to the concave structure 20, thereby forming a snap-fit.
Tongue 19 forms a point contact with recessed feature 20; or tongue 19 is an arc that makes arcuate contact with recessed feature 20.
In this example, the tongue 19 is more firmly engaged with the recess 20. The sealing effect between the first housing and the second housing is better.
Further, the bending of the tongue-shaped portion 19 does not affect other portions of the first cylindrical side wall 11. Therefore, the overall structure of the battery device does not change.
In other examples, the portion of the first cylindrical side wall 11 near the open end is bent toward the recessed structure 20 side to form the partial bead 21 without providing the notch 18.
For example, the material of the housing is metal. The portion of the open end of the first housing is partially punched inwardly by means of a punching process or a rolling process to recess to form the partial bead 21. In this way, the engagement can also be formed.
In one example, as shown in fig. 1-2, an explosion-proof slot 14 is provided in the bottom cover 13 and/or the top cover 12. When the pressure inside the battery device reaches a set value, the explosion-proof tank 14 is broken, and pressure relief is performed. For example, the explosion-proof tank 14 has a U-shaped, V-shaped, etc. cross section. The explosion-proof groove 14 is formed by means of laser etching or chemical etching. The explosion-proof groove 14 is opened on the inner surface or the outer surface of the top cover 12 and/or the bottom cover 13. The shape can form stress concentration at the bottom of the explosion-proof tank 14, so that the explosion-proof tank 14 is easy to break, and the sensitivity is high.
For example, the explosion-proof tank 14 has a ring shape or a line shape. For example, the ring shape includes a rectangular ring shape, an annular ring shape, an elliptical ring shape, and the like. The annular explosion proof tank 14 is more easily broken and forms a through hole after the breaking. Compared with the formation of gaps, the pressure release of the through holes is quicker, and the explosion-proof performance is better. The linear shape includes a straight line shape, an arc shape, a wavy line shape, and the like. The shape can play a good role in pressure relief and explosion prevention.
In one example, the explosion-proof tank 14 is in the shape of a positive electrode sign or a negative electrode sign. For example, the top cover 12 typically serves as the positive electrode of the battery device. The positive current collector of the cell 23 is electrically connected to the top cap 12. An explosion-proof groove 14 having a "+" shape is formed in an outer surface of the top cover 12 (for example, a middle portion of the top cover 12). The bottom cover 13 generally serves as the negative electrode of the battery. The negative current collector of the cell 23 is electrically connected to the bottom cover 13. An explosion-proof groove 14 of a "-" shape is provided on the outer surface of the bottom cover 13 (e.g., the middle portion of the bottom cover 13). In this example, the explosion-proof tank 14 can function both to relieve pressure and prevent explosion, and to identify the positive and negative electrodes.
In some battery devices, in order to secure structural strength of the battery device, the thicknesses of the first case and the second case are generally large, which makes the first case and the second case less prone to deformation. The sensitivity of the formed explosion-proof tank 14 is low, and pressure relief cannot be performed at a low pressure (for example, 2 MPa).
To solve this problem, in one example, as shown in fig. 3 to 6, a pressure relief hole 15 is provided in the bottom cover 13 and/or the top cover 12. The pressure release hole 15 is used for releasing the gas inside the battery device to release the pressure. In the normal state, the pressure release hole 15 is sealed. For example, a seal cover 16 is provided in the pressure release hole 15. The sealing cover 16 has a structural strength smaller than that of the top cover 12 or the bottom cover 13. In this example, the seal cap 16 is capable of breaking at a lower pressure to allow pressure relief due to its lower structural strength.
Further, as shown in fig. 3 and 5-6, an explosion-proof groove 14 is formed in the sealing cover 16. The blast groove 14 is shaped as previously described.
In this instance, since the structural strength of the sealing cover 16 is smaller than that of the top cover 12 or the bottom cover 13 where it is located, the explosion-proof tank 14 can be broken under a smaller pressure. In this way, the sensitivity of the blast groove 14 is higher.
For example, the sealing cover 16 is made of metal, such as copper alloy, aluminum alloy, stainless steel, etc. Is arranged on the pressure relief hole 15 by means of laser welding or resistance welding and forms a seal.
For example, the sealing cover 16 is made of the same material as the top cover 12 or the bottom cover 13. The thickness of the sealing cover 16 is smaller than that of the top cover 12 or the bottom cover 13. Alternatively, the seal cover 16 may be made of a metal having a low structural strength. For example, the top cover 12 or the bottom cover 13 is made of stainless steel, and the sealing cover 16 is made of copper, aluminum, or the like.
In one example, the depth of the blast groove 14 is 30% -90% of the thickness of the cover in which it is located. The cover body comprises a top cover 12, a bottom cover 13 or a sealing cover 16. In this depth range, the sealing performance and the safety performance of the battery device are good.
In the above embodiment, the clamping of the partial bead 21 with the recessed feature 20, the sealing cap 16 and the explosion proof slot 14 form multiple safety measures. In this way, at least one safety measure can be activated when the pressure in the battery device reaches a set value, so that pressure relief takes place. This arrangement significantly improves the safety of the battery device.
According to another embodiment of the present disclosure, an electronic device is provided. The electronic device may be, but is not limited to, a cell phone, tablet computer, smart watch, notebook computer, game console, intercom, earphone, electronic book reader, etc.
The electronic equipment comprises a shell and the battery device. A PCB is disposed within the housing. The battery device is disposed within the housing and electrically connected to the powered device within the electronic device via the PCB.
The electronic equipment has the characteristic of excellent safety performance.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are 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. A battery device, comprising:
a first housing including a first cylindrical side wall and a top cover disposed at one end of the first cylindrical side wall, and
the battery pack comprises a first shell, a second shell, a first shell and a second shell, wherein the first shell comprises a first cylindrical side wall and a bottom cover arranged at one end of the first cylindrical side wall, a concave structure is formed at least partially at the connecting part of the first cylindrical side wall and the bottom cover, the first shell and the second shell are inserted together in a mode that the opening ends are opposite, the first cylindrical side wall is sleeved on the outer side of the first cylindrical side wall, an insulating sealing piece is arranged between the first cylindrical side wall and the second cylindrical side wall, the part, close to the opening ends, of the first cylindrical side wall is bent to one side of the concave structure along the part in the circumferential direction so as to form a local curled edge, the local curled edge is clamped with the concave structure, and when the internal pressure of the battery pack reaches a set value, the first shell is deformed locally so that a sealing structure between the first shell and the second shell is destroyed, and pressure is relieved.
2. The battery device according to claim 1, wherein an explosion-proof groove is opened on the bottom cover and/or the top cover.
3. The battery device according to claim 1, wherein a pressure release hole is provided in the bottom cover and/or the top cover, and a sealing cover is provided in the pressure release hole, and the sealing cover has a structural strength smaller than that of the top cover or the bottom cover.
4. The battery device according to claim 3, wherein an explosion-proof groove is provided in the sealing cover.
5. The battery device according to claim 2 or 4, wherein the depth of the explosion-proof groove is 30% -90% of the thickness of the cover body.
6. The battery device according to claim 2 or 4, wherein the explosion-proof groove has a ring shape or a linear shape.
7. The battery device according to claim 1, wherein a portion of the first cylindrical side wall near the open end is bent toward the recessed structure side to form the partial bead.
8. The battery device of claim 1, wherein the partial bead is one or more.
9. The battery device according to any one of claims 1 to 4 and 8, wherein a plurality of notches are formed in a portion of the first cylindrical side wall near the open end, and a tongue-shaped portion is formed between adjacent notches, the tongue-shaped portion being bent toward the recessed structure side to form a partial bead.
10. An electronic device comprising the battery device according to any one of claims 1 to 9.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107887.7A CN109786611B (en) | 2019-02-02 | 2019-02-02 | Battery device and electronic apparatus |
| PCT/CN2019/095497 WO2020155563A1 (en) | 2019-02-02 | 2019-07-10 | Battery device and electronic device |
| US16/973,569 US11757154B2 (en) | 2019-02-02 | 2019-07-10 | Battery apparatus and electronic device |
| EP19913570.8A EP3780144A4 (en) | 2019-02-02 | 2019-07-10 | Battery device and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107887.7A CN109786611B (en) | 2019-02-02 | 2019-02-02 | Battery device and electronic apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109786611A CN109786611A (en) | 2019-05-21 |
| CN109786611B true CN109786611B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910107887.7A Active CN109786611B (en) | 2019-02-02 | 2019-02-02 | Battery device and electronic apparatus |
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| CN (1) | CN109786611B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3780144A4 (en) * | 2019-02-02 | 2022-02-02 | Guangdong Mic-power New Energy Co., Ltd. | Battery device and electronic device |
| CN110459703B (en) * | 2019-08-13 | 2024-05-31 | 广东微电新能源有限公司 | Battery device and electronic equipment |
| US20220294086A1 (en) * | 2019-11-05 | 2022-09-15 | Guangdong Mic-power New Energy Co., Ltd. | Button battery and electronic device |
| CN110890501A (en) * | 2019-12-13 | 2020-03-17 | 广东中科瑞龙精密技术有限公司 | Explosion-proof button battery beneficial to improving safety performance |
| CN111048730A (en) * | 2019-12-30 | 2020-04-21 | 漳州万宝能源科技股份有限公司 | Internal connection structure of button cell and manufacturing method thereof |
| CN111129388A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Energy storage device and assembling method thereof |
| CN111082156B (en) * | 2019-12-30 | 2021-07-13 | 漳州万宝能源科技股份有限公司 | Button cell and manufacturing method thereof |
| CN111129367A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Energy storage device and assembling method thereof |
| WO2021135166A1 (en) * | 2019-12-30 | 2021-07-08 | 广东微电新能源有限公司 | Energy storage device and method for assembling energy storage device |
| CN111146398A (en) * | 2020-01-15 | 2020-05-12 | 广东中科瑞龙精密技术有限公司 | Button cell structure beneficial to rapid charging and discharging |
| CN111146370A (en) * | 2020-01-15 | 2020-05-12 | 广东中科瑞龙精密技术有限公司 | Do benefit to button cell packaging structure who promotes assembly stability |
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| CN211907486U (en) | 2020-03-03 | 2020-11-10 | 珠海冠宇电池股份有限公司 | Shell assembly of button cell, button cell and electronic product |
| CN111162207A (en) * | 2020-03-06 | 2020-05-15 | 广东中科瑞龙精密技术有限公司 | Wearable battery structure beneficial to promotion of mass production |
| CN112331964B (en) * | 2020-11-09 | 2022-08-05 | 湖南宝特瑞能新能源有限责任公司 | Cylindrical packaging and sealing shell structure for lithium battery |
| CN112382825A (en) * | 2020-11-11 | 2021-02-19 | 路华置富电子(深圳)有限公司 | Button cell with explosion-proof structure |
| CN112701341B (en) * | 2020-12-28 | 2022-02-25 | 广东微电新能源有限公司 | Battery and electronic equipment |
| CN113594621A (en) * | 2021-07-21 | 2021-11-02 | 宁波小顶科技有限公司 | Exhaust device for filling type battery |
| CN113594622A (en) * | 2021-07-21 | 2021-11-02 | 宁波小顶科技有限公司 | Integrated battery directional exhaust device |
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