CN211789225U - Battery with explosion-proof structure - Google Patents
Battery with explosion-proof structure Download PDFInfo
- Publication number
- CN211789225U CN211789225U CN202020779344.8U CN202020779344U CN211789225U CN 211789225 U CN211789225 U CN 211789225U CN 202020779344 U CN202020779344 U CN 202020779344U CN 211789225 U CN211789225 U CN 211789225U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- battery
- metal shell
- rubber ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model provides a battery with explosion-proof structure, it includes casing, explosion-proof piece, electric core and insulating rubber ring, the casing includes interior metal casing and outer metal casing, interior metal casing and outer metal casing cup joint, be provided with heavy groove and explosion-proof through-hole on the casing, explosion-proof through-hole intercommunication casing's inner chamber and exterior space, heavy groove is formed through the mode of carrying out cutting process to the surface of casing, explosion-proof through-hole is located heavy groove, explosion-proof piece is connected in heavy groove, explosion-proof piece seals explosion-proof through-hole; the battery core is arranged in the inner metal shell, and the insulating rubber ring is arranged between the outer metal shell and the inner metal shell in a sealing manner. The utility model discloses a mode that carries out cutting process to the surface of casing forms heavy groove, and the explosion-proof piece is connected in heavy groove, generates heat when the battery, and its inside can produce high-pressure gas, and high-pressure gas can burst explosion-proof piece, releases high-pressure gas for the battery has explosion-proof function, has increased the inside space of battery simultaneously, can do the capacity of battery bigger.
Description
Technical Field
The utility model relates to a battery field, in particular to battery with explosion-proof construction.
Background
A battery is a device that contains an electrolyte solution and metal electrodes, and is capable of converting chemical energy into electrical energy. Among them, the battery is thin and small in size, so that it is often used in various electronic products to be powered by the battery. Wherein the battery is under the condition that suffers from unconventional operations such as fire roast, violent striking, the intensification that generates heat easily for the inside gas of battery increases, and atmospheric pressure increases, and then probably breaks outer metal casing release energy, leads to the battery to catch fire or explode, consequently can set up some blast resistant construction on the battery generally, but in prior art, blast resistant construction on the battery need carry out stamping process on the battery casing, and this stamping structure often can occupy the inside partial space of battery, thereby influences the capacity of battery.
It is desirable to provide a battery having an explosion-proof structure to solve the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery with explosion-proof structure, its mode through carrying out cutting process to the surface of casing forms heavy groove, and the explosion-proof piece is connected in heavy groove to solve among the prior art explosion-proof structure on the battery and often can occupy the partial space of battery inside, influence the problem of the capacity of battery.
In order to solve the technical problem, the utility model adopts the technical scheme that: a battery having an explosion-proof structure, comprising:
the anti-explosion shell comprises a shell, a shell body and a shell cover, wherein the shell body comprises an inner metal shell and an outer metal shell, the inner metal shell is of a cylindrical structure, one end of the inner metal shell is provided with a first opening, the outer metal shell is of a cylindrical structure, one end of the outer metal shell is provided with a second opening, the first opening is in butt joint with the second opening, the shell body is provided with a sinking groove and an anti-explosion through hole, the anti-explosion through hole is communicated with an inner cavity and an outer space of the shell body, the sinking groove is formed by cutting the outer surface of the shell body, and the anti-;
the explosion-proof sheet is connected in the sinking groove, the explosion-proof sheet seals the explosion-proof through hole, the area of the explosion-proof sheet opposite to the through hole is an explosion-proof area, a crack line is arranged on the explosion-proof sheet, and at least part of the crack line is positioned in the explosion-proof area;
the battery cell is arranged in the inner metal shell, connected with the outer metal shell through a positive electrode lug and connected with the inner metal shell through a negative electrode lug; and
and the insulating rubber ring is arranged between the outer metal shell and the inner metal shell in a sealing manner, and one end of the outer metal shell is connected to the periphery of the insulating rubber ring in a locking manner, so that a seal is formed between the edge of the outer metal shell and the insulating rubber ring.
The utility model discloses in, set up two on the internal surface of explosion-proof piece the fracture line, two the crisscross setting of fracture line, two the nodical position of fracture line is in the explosion-proof area.
The utility model discloses in, set up a fracture line on the explosion-proof piece, the fracture line is the loop configuration, the loop configuration includes blind end and non-blind end, the blind end is located in the explosion-proof area.
The utility model discloses in, the heavy groove sets up on the outside terminal surface of interior metal casing, just the heavy groove is close to the terminal surface edge of interior metal casing, or the heavy groove sets up on the outside terminal surface of outer metal casing, just the heavy groove is close to the terminal surface edge of outer metal casing.
The utility model discloses in, the battery still includes insulating piece and lower insulating piece, it sets up to go up the insulating piece the electricity core with between the interior top surface of interior metal casing, the insulating piece sets up down the electricity core with between the interior bottom surface of outer metal casing go up the insulating piece or be provided with the air vent on the insulating piece down.
The utility model discloses in, the explosion-proof piece is the copper foil piece, the copper foil piece is connected through the mode of hot pressure welding in the heavy groove, the degree of depth in heavy groove equals the thickness of copper foil piece.
The utility model discloses in, the insulating rubber ring cladding is in on the inside and outside surface of the axial curb plate of interior metal casing, interior metal casing is close to first open-ended border and is provided with the hem, the hem is to the outside protrusion, the hem with the insulating rubber ring card is solid.
The edge of the inner side of one end, close to the first opening, of the insulating rubber ring is provided with an oblique chamfer, and the edge of the outer side of the insulating rubber ring is provided with a round chamfer.
The utility model discloses in, keep away from in the outer metal casing second open-ended one end is provided with the section that contracts, it is close to contract the section the internal diameter of second open-ended one end is greater than it keeps away from to contract the section the internal diameter of second open-ended one end.
In the utility model discloses in, it is between 0.15 ~ 0.7 to tighten the height ratio of section and the height of outer metal casing, it is between 170 ~ 179 to tighten the contained angle between the internal face of section and the internal face of outer metal casing.
The utility model discloses in, be provided with annular sand grip on the inner wall of outer metal casing, annular sand grip with insulating rubber ring interference is connected, annular sand grip is through right the outside of outer metal casing carries out the mode formation of punching press.
In the utility model, an inner shell clamping part is arranged at one end of the outer side surface of the inner metal shell, the inner shell clamping part comprises an inner first convex part and an outer first concave part, and the inner insulating rubber ring is coated on the non-arranged area of the first convex part of the inner surface of the inner metal shell;
the insulating rubber ring is provided with a rubber ring clamping portion, the rubber ring clamping portion comprises an inner second convex portion and an outer second concave portion, the second convex portion is clamped in the first concave portion, and the edge of the outer metal shell is clamped in the second concave portion.
The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a mode that carries out cutting process to the surface of casing forms heavy groove, and the explosion-proof piece is connected in heavy groove, generates heat when the battery, and its inside can produce high-pressure gas, and high-pressure gas can burst explosion-proof piece, releases high-pressure gas for the battery has explosion-proof function, has increased the inside space of battery simultaneously, can do the capacity of battery bigger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.
Fig. 1 is a schematic view of a sectional structure of the battery with an explosion-proof structure according to the present invention when the explosion-proof through hole is disposed on the inner metal case.
Fig. 2 is an enlarged view of a portion of the structure at X in fig. 1.
Fig. 3 is an enlarged view of a portion of the structure at Y in fig. 1.
Fig. 4 is a schematic structural view of a rupture disk provided with two fracture lines.
Fig. 5 is a schematic structural view of a rupture disk provided with a ring-structured fracture line.
Fig. 6 is a schematic structural view of a rupture disk provided with a ring-structured fracture line.
Fig. 7 is a schematic structural diagram of the upper insulation sheet.
Fig. 8 is a schematic structural view of the battery with explosion-proof structure according to the present invention, when the outer metal casing is provided with the annular protruding strip.
Fig. 9 is a schematic structural diagram of the battery with an explosion-proof structure according to the present invention, when the inner metal casing is provided with the inner casing engaging portion.
Fig. 10 is a schematic sectional view of the explosion-proof through hole of the battery having an explosion-proof structure according to the present invention, which is provided in the outer metal case.
An outer metal shell 11; an annular rib 111; a housing explosion-proof through hole 112; an inner metal shell 12; an inner shell explosion-proof through hole 121; a folded edge 122; an inner shell engaging portion 123; an insulating rubber ring 13; a rubber ring air escape 131; a rubber ring engaging portion 132; a cell 14; a negative electrode tab 15; a positive electrode tab 16; an upper insulating sheet 17; a vent hole 171; a lower insulating sheet 18; an explosion-proof sheet 19; a tear line 191; the length L is compacted.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.
The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., the connection may be a detachable connection or a connection in a unitary structure; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the prior art, the explosion-proof structure on the battery needs to be stamped on the battery shell, and the stamped structure often occupies part of the space inside the battery, thereby affecting the capacity of the battery.
The present invention provides a first embodiment of a battery having an explosion-proof structure, which can solve the above technical problems.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic cross-sectional view illustrating an explosion-proof through hole of a battery having an explosion-proof structure according to the present invention disposed on an inner metal case, and fig. 2 is an enlarged view of a portion of the battery at X in fig. 1.
In the drawings, elements having similar structures are denoted by the same reference numerals.
The utility model provides a battery with explosion-proof structure, it includes casing, explosion-proof piece 19, electric core 14 and insulating rubber ring 13.
Wherein, the casing includes interior metal casing 12 and outer metal casing 11, interior metal casing 12 has first open-ended tubular structure for one end, outer metal casing 11 has second open-ended tubular structure for one end, first opening and second opening butt joint are provided with heavy groove and explosion-proof through-hole on the casing, the inner chamber and the exterior space of explosion-proof through-hole intercommunication casing, heavy groove is formed through the mode of carrying out cutting process to the surface of casing, if mill the surface to the casing in order to form heavy groove, explosion-proof through-hole is located heavy inslot.
The explosion-proof sheet 19 is connected in the sinking groove, the explosion-proof through hole is sealed by the explosion-proof sheet 19, the area of the explosion-proof sheet 19 opposite to the through hole is an explosion-proof area, a crack line 191 is arranged on the explosion-proof sheet 19, and at least part of the crack line 191 is positioned in the explosion-proof area.
The battery cell 14 is arranged in the inner metal shell 12, the battery cell 14 is connected with the outer metal shell 11 through a positive electrode tab 16, and the battery cell 14 is connected with the inner metal shell 12 through a negative electrode tab 15.
The insulating rubber ring 13 is arranged between the outer metal shell 11 and the inner metal shell 12 in a sealing mode, so that sealing and insulation are formed between the outer metal shell 11 and the inner metal shell 12, one end of the outer metal shell 11 is connected to the periphery of the insulating rubber ring 13 in a locking mode, and a seal is formed between the edge of the outer metal shell 11 and the insulating rubber ring 13.
When the battery generates heat, high-pressure gas is generated in the battery, and when the air pressure reaches a certain degree, the high-pressure gas can burst the explosion-proof sheet 19 along the crack line 191, a release through hole is formed on the explosion-proof sheet 19, and the high-pressure gas can be released through the explosion-proof through hole and the release through hole to prevent the battery from catching fire or exploding.
The utility model provides a height-diameter ratio of battery with explosion-proof structure is between 0.4 ~ 1.
Referring to fig. 1, the sinking groove in this embodiment may be an inner shell sinking groove disposed on an outer end surface of the inner metal shell 12, the explosion-proof through hole is an inner shell explosion-proof through hole 121 disposed on an end surface of the inner metal shell 12, the inner shell explosion-proof through hole 121 is located in the inner shell sinking groove, and the inner shell sinking groove is close to an end surface edge of the inner metal shell 12, so as to prevent the inner shell explosion-proof through hole 121 from interfering with the negative electrode tab 15.
Or referring to fig. 10, the sinking groove in this embodiment may also be an outer shell sinking groove disposed on the outer end surface of the outer metal shell 11, the explosion-proof through hole is an outer shell explosion-proof through hole 112 disposed on the end surface of the outer metal shell 11, the outer shell explosion-proof through hole 112 is located in the outer shell sinking groove, and the outer shell sinking groove is close to the edge of the end surface of the inner metal shell 12, so as to prevent the inner shell explosion-proof through hole 121 from interfering with the positive electrode tab 16.
Referring to fig. 4, preferably, two fracture lines 191 are disposed on the inner surface of the explosion-proof sheet 19, the two fracture lines 191 are disposed in a staggered manner, and the intersection point of the two fracture lines 191 is located in the explosion-proof area.
Referring to fig. 5 and 6, a crack line may be further disposed on the explosion-proof plate 19, where the crack line is an annular structure, the annular structure includes a closed end and a non-closed end, the closed end is located in the explosion-proof area, and by disposing the non-closed end, when the high-pressure gas in the battery breaks the explosion-proof plate 19 along the crack line, fragments of the explosion-proof plate 19 can be prevented from splashing.
The lower end of the fracture line in fig. 5 is a closed end, the upper end of the fracture line is a non-closed end, the lower end of the fracture line in fig. 6 is a closed end, and the upper end of the fracture line is a non-closed end.
Referring to fig. 7, the battery of the present invention further includes an upper insulation sheet 17 and a lower insulation sheet 18, the upper insulation sheet 17 is disposed between the inner top surfaces of the battery cell 14 and the inner metal shell 12, the lower insulation sheet 18 is disposed between the inner bottom surfaces of the battery cell 14 and the outer metal shell 11, the upper insulation sheet 17 and the lower insulation sheet 18 can isolate the battery cell 14 from the inner metal shell 12, and the upper insulation sheet 17 or the lower insulation sheet 18 is provided with a vent hole 171, so that when the battery cell 14 generates heat, the gas inside the battery can flow into the explosion-proof through hole through the vent hole 171.
As shown in fig. 1, especially in the case where the battery cell 14 is a wound battery cell, the battery cell 14 generates heat, and gas generated in the gap between the battery cell membranes of the battery cell 14 can better flow to the explosion-proof through hole through the vent hole 171.
The explosion-proof sheet 19 in this embodiment is a copper foil, the copper foil is connected in the sinking groove by means of thermocompression bonding, the depth of the sinking groove is equal to the thickness of the copper foil, and the depth of the sinking groove is processed based on the thickness of the copper foil.
The utility model discloses in, on the inside and outside surface of the axial curb plate of metal casing 12 including insulating rubber ring 13 cladding, the insulating rubber ring 13 of interior metal casing 12 internal surface can keep apart metal casing 12 and electric core 14 for it is insulating to form between interior metal casing 12 and the electric core 14.
Referring to fig. 3, a folded edge 122 is disposed at an edge of the inner metal shell 12 close to the first opening, the folded edge 122 protrudes outward, and the folded edge 122 is fastened to the insulating rubber ring 13, so that the inner metal shell 12 and the insulating rubber ring 13 are connected and fastened.
The insulating rubber ring 13 is provided with a rubber ring air release opening 131. When the battery generates heat, high-pressure gas is generated inside the battery, and the high-pressure gas can separate the outer metal shell 11 from the insulating rubber ring 13. When outer metal casing 11 and insulating rubber ring 13 separate to the settlement degree, insulating rubber ring 13 no longer with outer metal casing 11 sealing connection for rubber ring air escape port 131 can communicate the inner space and the exterior space of outer metal casing 11, thereby can prevent through the release of rubber ring air escape port 131 that high-pressure gas from catching fire or exploding.
When the battery generates heat rapidly, high-pressure gas does not have time to release through explosion-proof through hole and release through hole, and high-pressure gas can make outer metal casing 11 and insulating rubber ring 13 separate, and the explosion-proof structure of the mouth 131 that loses heart of rubber ring just can play a role, and the explosion-proof structure of the mouth 131 that loses heart of rubber ring combines with the explosion-proof structure of explosion-proof piece 19 to form dual explosion-proof, and the explosion-proof performance is better.
The insulating rubber ring 13 in this embodiment is provided with an oblique chamfer at the inner side edge of one end close to the first opening, and a round chamfer is provided at the outer side edge. The inner side of the insulating rubber ring 13 is provided with an oblique chamfer, so that excessive interference between the insulating rubber ring 13 and the battery cell 14 during assembly can be avoided, and the outer side of the insulating rubber ring 13 is provided with a round chamfer, so that the assembly between the insulating rubber ring 13 and the outer metal shell 11 is facilitated.
The utility model discloses in, keep away from second open-ended one end in the outer metal casing 11 and be provided with to reduce section L, along the directional outer metal casing 11 inner bottom surface's of second opening direction, reduce section L's internal diameter and reduce gradually, reduce section L promptly and be greater than to reduce section L and keep away from the internal diameter of second open-ended one end.
In the early stage of the sleeving connection of the insulating rubber ring 13 and the outer metal shell 11, a gap is formed between the insulating rubber ring 13 and the inner wall of the outer metal shell 11, so that the installation is convenient and easy.
And when the insulating rubber ring 13 is gradually connected with the tightening section L, the insulating rubber ring 13 gradually forms interference connection with the outer metal shell 11, then, the edge of the outer metal shell 11 is pressurized to deform, and after the deformation is generated, the edge of the outer metal shell 11 is locked and connected to the periphery of the insulating rubber ring 13, so that a seal is formed between the edge of the outer metal shell 11 and the insulating rubber ring 13, the outer metal shell 11 and the insulating rubber ring 13 are firmly sleeved, and the sealing performance between the insulating rubber ring and the outer metal shell 11 is better.
In the embodiment, the ratio of the height of the contraction section L to the height of the outer metal shell 11 is between 0.15 and 0.7, and the included angle between the inner wall surface of the contraction section L and the inner wall surface of the outer metal shell 11 is between 170 and 179 degrees.
Referring to fig. 8, in the present invention, an annular protruding strip 111 is disposed on an inner wall of the outer metal shell 11, the annular protruding strip 111 is in interference connection with the insulating rubber ring 13, and the annular protruding strip 111 is formed by punching an outer side of the outer metal shell 11.
The annular rib 111 can enhance the connection between the outer metal shell 11 and the inner metal shell 12, and the annular rib 111 is formed by punching after the outer metal shell 11 and the inner metal shell 12 are assembled, so that the assembling operation of the outer metal shell 11 and the inner metal shell 12 is not affected.
Referring to fig. 9, in the present invention, an inner shell clamping portion 123 is disposed at one end of the outer side surface of the inner metal shell 12, the inner shell clamping portion 123 includes an inner first convex portion and an outer first concave portion, and the inner insulating rubber ring 13 is wrapped around the inner metal shell 12, i.e. as shown in fig. 9, the inner insulating rubber ring 13 of the inner metal shell 12 does not extend from bottom to top to contact with the first convex portion, and thus the space is saved.
Be provided with rubber ring joint portion 132 on the insulating rubber ring 13, rubber ring joint portion 132 includes the second concave part in the inboard second convex part and the outside, and second convex part joint is in first concave part, and the border joint of outer metal casing 11 is in the second concave part, through setting up inner shell joint portion 123 and rubber ring joint portion 132, can be connected outer metal casing 11 and insulating rubber ring 13 more firmly.
The utility model discloses a mode that carries out cutting process to the surface of casing forms heavy groove, and the explosion-proof piece is connected in heavy groove, generates heat when the battery, and its inside can produce high-pressure gas, and high-pressure gas can burst explosion-proof piece, releases high-pressure gas for the battery has explosion-proof function, has increased the inside space of battery simultaneously, can do the capacity of battery bigger.
In summary, although the present invention has been disclosed in two embodiments, the above embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A battery having an explosion-proof structure, comprising:
the anti-explosion shell comprises a shell, a shell body and a shell cover, wherein the shell body comprises an inner metal shell and an outer metal shell, the inner metal shell is of a cylindrical structure, one end of the inner metal shell is provided with a first opening, the outer metal shell is of a cylindrical structure, one end of the outer metal shell is provided with a second opening, the first opening is in butt joint with the second opening, the shell body is provided with a sinking groove and an anti-explosion through hole, the anti-explosion through hole is communicated with an inner cavity and an outer space of the shell body, the sinking groove is formed by cutting the outer surface of the shell body, and the anti-;
the explosion-proof sheet is connected in the sinking groove, the explosion-proof sheet seals the explosion-proof through hole, the area of the explosion-proof sheet opposite to the through hole is an explosion-proof area, a crack line is arranged on the explosion-proof sheet, and at least part of the crack line is positioned in the explosion-proof area;
the battery cell is arranged in the inner metal shell, connected with the outer metal shell through a positive electrode lug and connected with the inner metal shell through a negative electrode lug; and
and the insulating rubber ring is arranged between the outer metal shell and the inner metal shell in a sealing manner, and one end of the outer metal shell is connected to the periphery of the insulating rubber ring in a locking manner, so that a seal is formed between the edge of the outer metal shell and the insulating rubber ring.
2. The battery with the explosion-proof structure as defined in claim 1, wherein two said fracture lines are provided on the inner surface of the explosion-proof sheet, the two said fracture lines are staggered, and the intersection point of the two said fracture lines is located in the explosion-proof area.
3. The battery with an explosion-proof structure as recited in claim 1, wherein the explosion-proof sheet is provided with a score line, the score line is of a ring structure, the ring structure comprises a closed end and a non-closed end, and the closed end is located in the explosion-proof area.
4. The battery having an explosion-proof structure as set forth in claim 1, wherein said sink is provided on an outer end face of said inner metal case and said sink is close to an end face edge of said inner metal case, or said sink is provided on an outer end face of said outer metal case and said sink is close to an end face edge of said outer metal case.
5. The battery with an explosion-proof structure as defined in claim 1, wherein the battery further comprises an upper insulation sheet and a lower insulation sheet, the upper insulation sheet is disposed between the battery core and the inner top surface of the inner metal shell, the lower insulation sheet is disposed between the battery core and the inner bottom surface of the outer metal shell, and a vent hole is disposed on the upper insulation sheet or the lower insulation sheet.
6. The battery with the explosion-proof structure as defined in claim 1, wherein the explosion-proof sheet is a copper foil, the copper foil is connected in the sinking groove by means of thermocompression bonding, and the depth of the sinking groove is equal to the thickness of the copper foil.
7. The battery with the explosion-proof structure as claimed in claim 1, wherein the insulating rubber ring is coated on the inner and outer surfaces of the axial side plate of the inner metal shell, and the edge of the inner metal shell close to the first opening is provided with a folded edge, the folded edge protrudes outwards, and the folded edge is fastened with the insulating rubber ring.
8. A battery having an explosion proof structure as recited in claim 1, wherein an end of the outer metal case remote from the second opening is provided with a constricted section, and an inner diameter of the constricted section near the end of the second opening is larger than an inner diameter of the constricted section at the end remote from the second opening.
9. The battery with the explosion-proof structure as defined in claim 1, wherein the inner wall of the outer metal shell is provided with an annular rib, the annular rib is in interference connection with the insulating rubber ring, and the annular rib is formed by punching the outer side of the outer metal shell.
10. The battery with the explosion-proof structure as recited in claim 1, wherein an inner housing engaging portion is disposed at one end of the outer side surface of the inner metal housing, the inner housing engaging portion includes an inner first convex portion and an outer first concave portion, and the inner insulating rubber ring is wrapped around a non-disposed region of the first convex portion of the inner surface of the inner metal housing;
the insulating rubber ring is provided with a rubber ring clamping portion, the rubber ring clamping portion comprises an inner second convex portion and an outer second concave portion, the second convex portion is clamped in the first concave portion, and the edge of the outer metal shell is clamped in the second concave portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020779344.8U CN211789225U (en) | 2020-05-12 | 2020-05-12 | Battery with explosion-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020779344.8U CN211789225U (en) | 2020-05-12 | 2020-05-12 | Battery with explosion-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211789225U true CN211789225U (en) | 2020-10-27 |
Family
ID=72957153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020779344.8U Active CN211789225U (en) | 2020-05-12 | 2020-05-12 | Battery with explosion-proof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211789225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564590A (en) * | 2020-05-12 | 2020-08-21 | 路华置富电子(深圳)有限公司 | Battery with explosion-proof structure |
-
2020
- 2020-05-12 CN CN202020779344.8U patent/CN211789225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564590A (en) * | 2020-05-12 | 2020-08-21 | 路华置富电子(深圳)有限公司 | Battery with explosion-proof structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3813171B1 (en) | Button battery for improving utilization rate of radial space | |
| JP5399990B2 (en) | Secondary battery | |
| CN210245557U (en) | Button cell | |
| WO2022117098A1 (en) | Button cell and electronic device | |
| CN111564590B (en) | Battery with explosion-proof structure | |
| JP2010520580A (en) | Battery and battery seal assembly for easy assembly | |
| WO2021004226A1 (en) | Top cover assembly and secondary battery | |
| CN214625295U (en) | Cylindrical lithium ion battery | |
| CN211789225U (en) | Battery with explosion-proof structure | |
| CN210956728U (en) | Alkaline manganese cell sealing structure and alkaline manganese cell | |
| CN115332719A (en) | Top cover assembly, battery and preparation method of battery | |
| CN211789227U (en) | Winding cell button cell with novel sealing structure | |
| CN211789114U (en) | Winding cell button battery with shell explosion-proof structure | |
| CN211789230U (en) | Laminated cell button cell with novel sealing structure | |
| CN211789229U (en) | Winding battery cell button battery with inner shell explosion-proof structure | |
| CN211789226U (en) | Laminated cell button battery with inner shell explosion-proof structure | |
| CN114171841A (en) | Cover plate assembly, battery and power utilization device | |
| US7459232B2 (en) | Secondary battery having safety valve and method of manufacturing same | |
| CN217158534U (en) | Explosion-proof valve, battery cover plate and battery | |
| CN211828855U (en) | Winding cell button cell convenient for installation | |
| CN211789231U (en) | Laminated cell button battery with shell explosion-proof structure | |
| CN112331971A (en) | Explosion-proof cover plate assembly of lithium ion battery | |
| JPH117922A (en) | Sealing structure for sealed battery | |
| CN211789115U (en) | Laminated cell button cell convenient to install | |
| CN217426920U (en) | Button cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |