CN222168452U - Battery and electric equipment - Google Patents
Battery and electric equipment Download PDFInfo
- Publication number
- CN222168452U CN222168452U CN202323364749.8U CN202323364749U CN222168452U CN 222168452 U CN222168452 U CN 222168452U CN 202323364749 U CN202323364749 U CN 202323364749U CN 222168452 U CN222168452 U CN 222168452U
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- China
- Prior art keywords
- battery
- tab
- shell
- diameter
- sealing
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 238000004804 winding Methods 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 238000005524 ceramic coating Methods 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 24
- 239000011149 active material Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
本实用新型涉及电池技术领域，尤其涉及一种电池及用电设备。电池包括外壳、卷芯和密封片，外壳顶部设置有开口，卷芯设置于外壳内，卷芯的两个极耳的直径为0.05mm～0.2mm，极耳的直径与外壳直径之比为0.83％～13.4％。用电设备包括上述的电池，通过将极耳的直径设置为0.05mm～0.2mm，极耳的直径与外壳直径之比为0.83％～13.4％，使得极耳直径相对于外壳较小，在密封片自身弹力作用下能够抱紧极耳，保证极耳与密封片之间保持良好的密封，避免电池发生漏液现象。
The utility model relates to the technical field of batteries, and in particular to a battery and an electrical device. The battery comprises a shell, a winding core and a sealing sheet. The top of the shell is provided with an opening, the winding core is arranged in the shell, the diameter of the two pole ears of the winding core is 0.05mm-0.2mm, and the ratio of the diameter of the pole ears to the diameter of the shell is 0.83%-13.4%. The electrical device comprises the above-mentioned battery, by setting the diameter of the pole ears to 0.05mm-0.2mm, and the ratio of the diameter of the pole ears to the diameter of the shell is 0.83%-13.4%, so that the diameter of the pole ears is smaller than that of the shell, and the sealing sheet can hold the pole ears tightly under the elastic force of the sealing sheet itself, so as to ensure that the pole ears and the sealing sheet are well sealed, and avoid leakage of the battery.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery and electric equipment.
Background
Micro batteries are commonly used in small devices, such as micro trackers. The whole size of the miniature battery is smaller, and the battery core is led out by adopting a semi-sealing structure scheme, namely the tab of the winding core passes through the sealing piece of the battery shell. The size of the existing tab is larger than the overall size of the micro battery, so that a gap is formed between the tab and the sealing piece, and the risk of leakage of the micro battery exists. Moreover, the relatively large tab also occupies a limited space within the housing, resulting in a reduced volume of active material within the housing, affecting battery capacity.
Disclosure of utility model
The utility model aims to provide a battery and electric equipment, so as to reduce the size of a tab and improve the tightness of the tab and a sealing piece.
The technical scheme adopted by the utility model is as follows:
A battery, comprising:
The shell and roll up the core, the shell top is provided with the opening, roll up the core set up in the shell, the diameter of two utmost point ears of roll up the core is 0.05mm ~0.2mm, the diameter of utmost point ear with the ratio of shell diameter is 0.83% -13.4%.
Preferably, the battery further comprises:
The sealing piece is arranged in the opening in a sealing way, two through holes are formed in the sealing piece, and the two electrode lugs penetrate out of the sealing piece from the corresponding through holes respectively.
As a preferable scheme, the length of the tab penetrating out of the sealing sheet is 15 mm-30 mm.
Preferably, the inner diameter of the sealing piece is 96% -98.5% of the inner diameter of the shell.
As a preferable scheme, the opening edge of the shell is inwards bent to form a flanging, the flanging is abutted against the upper surface of the sealing sheet, and sealing glue is arranged between the flanging and the sealing sheet.
Preferably, one of the tabs has a length greater than that of the other tab, and at least the outer surface of the tab having a longer length has an insulating layer.
Preferably, one tab has a length 5 mm-15 mm longer than the other tab.
As a preferable scheme, the thickness of the insulating layer is 0.01 mm-0.04 mm.
Preferably, the insulating layer is an insulating paint layer or a ceramic coating.
Preferably, the distance between the two lugs is 1/3-1/2 of the inner diameter of the shell.
Preferably, the wall thickness of the shell is 0.1 mm-0.3 mm.
And the battery comprises the battery.
The beneficial effects of the utility model are as follows:
The battery provided by the utility model comprises a shell, a winding core and a sealing piece, wherein an opening is formed in the top of the shell, the winding core is arranged in the shell, the diameter of two lugs of the winding core is 0.05-0.2 mm, and the ratio of the diameter of each lug to the diameter of the shell is 0.83-13.4%. The diameter of the tab is set to be 0.05-0.2 mm, and the ratio of the diameter of the tab to the diameter of the shell is 0.83-13.4%, so that the diameter of the tab is smaller than the diameter of the shell. When the tab is penetrated out of the through hole of the sealing sheet, the tab can be held tightly under the action of the self elasticity of the sealing sheet, so that a gap is avoided between the tab and the sealing sheet, good sealing is kept between the tab and the sealing sheet, and the leakage phenomenon of the battery is avoided.
The electric equipment comprises the battery, and the diameter of the electrode lug is set to be 0.05-0.2 mm, and the ratio of the diameter of the electrode lug to the diameter of the shell is 0.83-13.4%, so that the diameter of the electrode lug is smaller than the diameter of the shell. When the tab is penetrated out of the through hole of the sealing sheet, the tab can be held tightly under the action of the self elasticity of the sealing sheet, so that a gap is avoided between the tab and the sealing sheet, good sealing is kept between the tab and the sealing sheet, and the leakage phenomenon of electric equipment is avoided.
Drawings
Fig. 1 is a schematic view of a battery according to an embodiment of the present utility model.
The parts in the figures are named and numbered as follows:
1. 11 parts of shell, 11 parts of flange, 2 parts of winding core, 21 parts of tab, 3 parts of sealing piece, 31 parts of through hole.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
The whole size of the miniature battery is smaller, and the battery core is led out by adopting a semi-sealing structure scheme, namely the tab of the winding core passes through the sealing piece of the battery shell. The size of the existing tab is larger than the overall size of the micro battery, so that a gap is formed between the tab and the sealing piece, and the risk of leakage of the micro battery exists. Moreover, the relatively large tab also occupies a limited space within the housing, resulting in a reduced volume of active material within the housing, affecting battery capacity. In addition, the tabs are not generally insulated, resulting in the risk of shorting the positive and negative electrodes of the two tabs during the manufacturing process of the micro battery.
In order to solve the above problems, as shown in fig. 1, the present embodiment provides a battery, which includes a housing 1, a winding core 2 and a sealing plate 3, wherein an opening is provided at the top of the housing 1, the diameter of the housing 1 is 1.5 mm-6 mm, the winding core 2 is disposed in the housing 1, the diameters of two tabs 21 of the winding core 2 are 0.05 mm-0.2 mm, and the ratio of the diameters of the tabs 21 to the diameter of the housing 1 is 0.83% -13.4%. The sealing piece 3 is arranged in the opening in a sealing way, two through holes 31 are formed in the sealing piece 3, and the two lugs 21 penetrate out of the sealing piece 3 from the corresponding through holes 31 respectively. By setting the diameter of the tab 21 to 0.05 mm-0.2 mm, the ratio of the diameter of the tab 21 to the diameter of the housing 1 is 0.83% -13.4%, so that the diameter of the tab 21 is smaller than the diameter of the housing 1. When the tab 21 passes through the through hole 31 of the sealing sheet 3, the tab 21 can be held tightly under the action of the self elasticity of the sealing sheet 3, so that a gap between the tab 21 and the sealing sheet 3 is avoided, good sealing is kept between the tab 21 and the sealing sheet 3, and the leakage phenomenon of the battery is avoided. Meanwhile, the outer surface of at least one tab 21 is provided with an insulating layer, so that the two tabs 21 can be prevented from being in direct contact, short circuit of the battery is avoided, and the safety of the battery is improved.
It should be noted that, the length of one tab 21 is longer than the length of the other tab 21, and at least the outer surface of the tab 21 with the longer length has an insulating layer. The outer surface of one tab 21 of the present embodiment has an insulating layer, and the outer surface of the other tab 21 does not contain an insulating layer. Of course, the outer surfaces of both tabs 21 may also be provided with an insulating layer.
Specifically, the insulating layer of the present embodiment is an insulating paint layer or a ceramic coating layer. The insulating paint layer may be a polyurethane layer, a polyester-imide layer, or the like, so that the tab 21 has good insulating performance, and short circuit of the battery is avoided. It should be noted that, the thickness of the insulating layer is 0.01mm to 0.04mm, and the thickness value not only can ensure the insulating performance of the two tabs 21, but also is convenient for the subsequent removal operation of the insulating layer.
The wall thickness of the shell 1 is 0.1 mm-0.3 mm. For example, the wall thickness of the casing 1 may be 0.1mm, 0.2mm, 0.3mm, or the like, and in other embodiments, the wall thickness of the casing 1 may be set to other values according to the design requirements of the battery, which is not particularly limited herein.
The winding core 2 of the present embodiment is a member in which electrochemical reaction occurs in the battery. The winding core 2 is mainly formed by winding a laminated pole piece and a diaphragm. Specifically, the pole piece is divided into a positive pole piece and a negative pole piece, the diaphragm is divided into a first diaphragm and a second diaphragm, and the first diaphragm, the negative pole piece, the second diaphragm and the positive pole piece are mutually laminated and then wound to form the winding core 2. The portions of the positive electrode sheet and the negative electrode sheet having the active material constitute the main body portion of the winding core 2, and the respective tabs 21 (positive electrode tab and negative electrode tab) are connected to the portions of the positive electrode sheet and the negative electrode sheet having no active material. The two tabs 21 may be located at one end of the main body or located at two ends of the main body respectively, and the two tabs 21 of the present embodiment are located at one end of the main body. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 21 connects the electrode terminals to form a current loop. The first diaphragm is used for insulating and separating the negative electrode plate from the shell 1, and the second diaphragm is used for insulating and separating the positive electrode plate from the negative electrode plate. The tab 21 in this embodiment is cylindrical, the material of the positive electrode tab is aluminum, steel or nickel wire, and the material of the negative electrode tab is nickel, copper nickel plating, etc. In other embodiments, the tab 21 may also have a flat sheet-like structure.
After the winding core 2 is mounted on the housing 1, the sealing sheet 3 is placed on the winding core 2. The gap is arranged between the sealing piece 3 and the inner wall of the shell 1, so that the sealing piece 3 is convenient to assemble, and the sealing piece 3 is prevented from being wrinkled after being assembled, and the assembling efficiency and the assembling quality of the battery are improved. The sealing sheet 3 of the embodiment is in a disc structure, and the inner diameter of the sealing sheet 3 is 96% -98.5% of the inner diameter of the shell 1. In other embodiments, the gap between the sealing plate 3 and the housing 1 can be flexibly adjusted, which is not particularly limited herein.
Further, as shown in fig. 1, the opening edge of the housing 1 is bent inwards to form a flange 11, the flange 11 abuts against the upper surface of the sealing sheet 3, and sealing glue is arranged between the flange 11 and the sealing sheet 3. The flange 11 can be abutted against the sealing piece 3, so that good sealing is kept between the shell 1 and the sealing piece 3, and meanwhile, the sealing performance of the shell 1 and the sealing piece 3 is further improved in a mode of coating sealing glue.
The two tabs 21 of the embodiment are respectively a positive electrode tab and a negative electrode tab, and the length of the tab 21 penetrating out of the sealing sheet 3 is 15 mm-30mm, so that the battery can be better clamped in a corresponding jig in a subsequent processing procedure. For example, the length of the two tabs 21 penetrating out of the sealing sheet 3 may be 15mm, 20mm, 25mm, 30mm, or the like. In other embodiments, the length of the tab 21 passing through the sealing sheet 3 may be set to other values according to the design requirements of the battery, which is not particularly limited herein.
When the battery is assembled, the insulating layer of the tab 21 is removed, so that the two tabs 21 are connected to the electrode terminals, respectively, to form a current loop. The length of one tab 21 (tab 21 with insulating layer) is 5mm to 15mm longer than the length of the other tab 21 (tab 21 without insulating layer), so that the height difference of the two tabs 21 is 5mm to 15mm. For example, the length of the negative electrode tab 21 is 30mm, the length of the positive electrode tab 21 is 20mm, and the removal length of the insulating layer of the tab 21 with the insulating layer is 8mm, so that the exposed parts (conductive parts) of the two tabs 21 are not in direct contact, short circuit of the battery is avoided, and the safety of the battery is improved.
Further, the distance between the two tabs 21 is 1/3-1/2 of the inner diameter of the housing 1. When the pitch of the two tabs 21 is too small, the assembly of the tabs 21 and the sealing sheet 3 is not facilitated, and the two tabs 21 are easily brought into direct contact when the insulating layer is not applied. When the pitch of the two tabs 21 is excessively large, the two tabs 21 are easily brought into contact with the case 1 without the insulating layer being applied.
The embodiment also provides electric equipment, which comprises the battery. By setting the diameter of the tab 21 to 0.05 mm-0.2 mm, the ratio of the diameter of the tab 21 to the diameter of the housing 1 is 0.83% -13.4%, so that the diameter of the tab 21 is smaller than the diameter of the housing 1. When the tab 21 passes through the through hole 31 of the sealing sheet 3, the tab 21 can be held tightly under the action of the self elasticity of the sealing sheet 3, so that a gap between the tab 21 and the sealing sheet 3 is avoided, good sealing is kept between the tab 21 and the sealing sheet 3, and the leakage phenomenon of electric equipment is avoided. Meanwhile, the outer surface of the tab 21 is provided with an insulating layer, so that the two tabs 21 can be prevented from being in direct contact, short circuit of the battery is avoided, and the safety of the battery is improved.
The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (12)
1. A battery, comprising:
the novel solar battery pack comprises a shell (1) and a winding core (2), wherein an opening is formed in the top of the shell (1), the winding core (2) is arranged in the shell (1), the diameters of two pole lugs (21) of the winding core (2) are 0.05-0.2 mm, and the ratio of the diameters of the pole lugs (21) to the diameter of the shell (1) is 0.83-13.4%.
2. The battery of claim 1, wherein the battery further comprises:
The sealing piece (3) is arranged in the opening in a sealing way, two through holes (31) are formed in the sealing piece (3), and the two electrode lugs (21) penetrate out of the sealing piece (3) from the corresponding through holes (31) respectively.
3. The battery according to claim 2, wherein the tab (21) extends out of the sealing sheet (3) by 15mm to 30mm.
4. The battery according to claim 2, characterized in that the inner diameter of the sealing sheet (3) is 96% -98.5% of the inner diameter of the housing (1).
5. The battery according to claim 2, characterized in that the opening edge of the housing (1) is bent inwards to form a flange (11), the flange (11) abuts against the upper surface of the sealing sheet (3), and a sealing glue is arranged between the flange (11) and the sealing sheet (3).
6. The battery according to claim 1, wherein one of the tabs (21) has a length greater than that of the other tab (21), and at least the outer surface of the longer tab (21) has an insulating layer.
7. The battery according to claim 6, wherein the length of one of the tabs (21) is 5mm to 15mm longer than the length of the other tab (21).
8. The battery of claim 6, wherein the insulating layer has a thickness of 0.01mm to 0.04mm.
9. The battery of claim 6, wherein the insulating layer is an insulating paint layer or a ceramic coating.
10. The battery according to any one of claims 1 to 9, wherein a space between two of the tabs (21) is 1/3 to 1/2 of an inner diameter of the case (1).
11. The battery according to any one of claims 1 to 9, wherein the wall thickness of the housing (1) is 0.1mm to 0.3mm.
12. A powered device comprising a battery as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323364749.8U CN222168452U (en) | 2023-12-08 | 2023-12-08 | Battery and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323364749.8U CN222168452U (en) | 2023-12-08 | 2023-12-08 | Battery and electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222168452U true CN222168452U (en) | 2024-12-13 |
Family
ID=93788682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323364749.8U Active CN222168452U (en) | 2023-12-08 | 2023-12-08 | Battery and electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222168452U (en) |
-
2023
- 2023-12-08 CN CN202323364749.8U patent/CN222168452U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |