CN115249876A - Battery tab and battery - Google Patents
Battery tab and battery Download PDFInfo
- Publication number
- CN115249876A CN115249876A CN202110460492.2A CN202110460492A CN115249876A CN 115249876 A CN115249876 A CN 115249876A CN 202110460492 A CN202110460492 A CN 202110460492A CN 115249876 A CN115249876 A CN 115249876A
- Authority
- CN
- China
- Prior art keywords
- tab
- battery
- heat treatment
- strength
- negative
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 230000002708 enhancing effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 3
- 238000005728 strengthening Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 238000007669 thermal treatment Methods 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- 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 invention discloses a battery tab and a battery, wherein the surface of the tab is provided with a strength enhancing area formed by heat treatment. Through setting up on utmost point ear surface and forming intensity reinforcing area through thermal treatment for in battery production manufacturing process, utmost point ear can not take place to curl because of receiving the collision, turns over and tear, reduces battery manufacturing cost simultaneously and can ensure the stability of battery performance.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a battery tab and a battery.
Background
The battery is because utmost point ear material is thinner, and in the manufacturing process, the utmost point ear receives easy curling, turns over and tears even after the collision, especially many utmost point ear battery, and its probability that the utmost point ear bumps in the coiling process is bigger, turns over the utmost point ear or tears and finally can influence the quality of battery, reports the waste product even appears.
Disclosure of Invention
The invention aims to provide a battery tab and a battery, so that the tab cannot be curled, folded and torn due to collision in the battery production and manufacturing process, the battery manufacturing cost is reduced, and the stability of the battery performance can be guaranteed.
In order to achieve the purpose, the invention provides a battery tab, and the surface of the tab is provided with a strength enhancing area formed by heat treatment.
Optionally, the heat treatment process comprises at least one of annealing, normalizing, quenching and high-frequency heating.
Optionally, the heat treatment mode comprises one of single-sided overall heat treatment, single-sided local heat treatment, double-sided overall heat treatment and double-sided local heat treatment.
Optionally, the tab has a first surface and a second surface opposite in the thickness direction;
the intensity-enhanced region is formed in all or a partial region of the first surface and/or in all or a partial region of the second surface.
Optionally, the strength reinforcing area includes a plurality of linear strips parallel to or having included angles with the side edges of the tab, and the plurality of linear strips are mutually parallel and distributed at intervals on the first surface and/or the second surface.
Optionally, the strength reinforcing area includes a linear strip parallel to the side edge of the tab or having an included angle, and the plurality of strength reinforcing areas are distributed in a cross grid shape on the first surface and/or the second surface.
Optionally, the strength-enhancing region comprises a plurality of curved strips, and the plurality of curved strips are symmetrically distributed on the first surface and/or the second surface.
The invention also provides a battery, which comprises a positive plate, a negative plate, a positive tab and a negative tab, wherein the positive tab is electrically connected with the positive plate, and the negative tab is electrically connected with the negative plate.
The invention has the beneficial effects that:
through setting up on utmost point ear surface and forming intensity reinforcing area through thermal treatment for in battery production manufacturing process, utmost point ear can not take place to curl because of receiving the collision, turns over and tear, reduces battery manufacturing cost simultaneously and can ensure the stability of battery performance.
The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 shows a schematic view of an enhanced strength region in a battery tab according to example 1 of the present invention.
Fig. 2 shows a schematic view of an enhanced strength region in a battery tab according to example 2 of the present invention.
Fig. 3 shows a schematic view of an enhanced strength region in a battery tab according to example 3 of the present invention.
Fig. 4 shows a schematic view of an enhanced strength region in a battery tab according to example 4 of the present invention.
Fig. 5 is a schematic view showing an enhanced strength region in a battery tab according to example 5 of the present invention.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
Fig. 1 shows a schematic view of an enhanced strength region in a battery tab according to example 1 of the present invention.
As shown in fig. 1, a battery tab, the surface of which tab 1 is provided with a strength-enhanced region 3 formed by heat treatment.
Wherein the heat treatment process comprises at least one of annealing, normalizing, quenching and high-frequency heating. The heat treatment mode comprises one of single-side overall heat treatment, single-side local heat treatment, double-side overall heat treatment and double-side local heat treatment.
The tab 1 has a first surface and a second surface opposite to each other in the thickness direction; in this embodiment, by adopting single-sided or double-sided integral heat treatment, the strength-enhanced region 3 may be formed on the entire area of the first surface, the entire area of the second surface, or the entire areas of the first surface and the second surface according to actual requirements.
In the specific implementation process, after the tab 1 is formed, the single face or double faces of the tab 1 are subjected to heat treatment, and the strength enhancing area 3 is formed in the whole area of the first surface and/or the whole area of the second surface of the tab 1, so that the strength of the tab 1 is enhanced, and the tab 1 cannot be curled, folded or torn easily even if being collided in the battery production and manufacturing process, thereby ensuring the quality of the battery and improving the yield.
In the case of the example 2, the following examples are given,
this embodiment differs from embodiment 1 in that the reinforcing region is formed in a partial region of the first surface and/or the second surface. The strength reinforcing area 3 comprises a plurality of linear strips parallel to the side edges of the tab 1, and the linear strips are mutually parallel and distributed at intervals on the first surface and/or the second surface.
As shown in fig. 2, in the specific implementation process, the strength enhancing region 3 formed by locally heat-treating the first surface and/or the second surface of the tab 1 includes 3 linear strips distributed at intervals in parallel, and the strips are parallel to the side edges of the tab 1, so as to enhance the strength of the tab 1. The rest is the same as embodiment 1, and is not described herein again.
Example 3
The difference between this embodiment and embodiment 1 is that the strength enhancing region 3 includes a plurality of linear strips forming an included angle with the side edge of the tab 1, and the plurality of linear strips are parallel to each other and distributed at intervals on the first surface and/or the second surface.
As shown in fig. 3, in the specific implementation process, the first surface and/or the second surface of the tab 1 is locally heat-treated to form a strength enhancing region 3, which includes 3 linear strips distributed at intervals in parallel, and the strips are all oblique strips having an included angle with the side edge of the tab 1, so as to enhance the strength of the tab 1. The rest is the same as embodiment 1, and is not described herein again.
Example 4
The difference between this embodiment and embodiment 1 is that the strength-enhanced zones 3 include linear strips parallel to or having an included angle with the side edges of the tab 1, and a plurality of strength-enhanced zones 3 are distributed in a cross-grid shape on the first surface and/or the second surface.
As shown in fig. 4, in the specific implementation process, the first surface and/or the second surface of the tab 1 is locally heat-treated to form a strength-enhanced region 3, and 4 linear strips are arranged in the heat-treated region and are respectively arranged in a staggered manner, so that the linear strips are distributed into two "cross" shapes, thereby enhancing the strength of the tab 1. The rest is the same as embodiment 1, and the description is omitted.
Example 5
This example differs from example 1 in that the strength-enhancing zone 3 comprises a plurality of curved strips, which are symmetrically distributed on the first surface and/or the second surface.
As shown in fig. 5, in the implementation, 2 heat treatment regions are provided, and are symmetrically distributed in curved strips, so as to enhance the strength of the tab 1. The rest is the same as embodiment 1, and the description is omitted.
Example 6
The invention also provides a battery, which comprises a pole piece 2 and a pole lug 1 electrically connected on the pole piece, wherein the pole piece 2 comprises a positive pole piece and a negative pole piece, the pole lug 1 comprises a positive pole lug and a negative pole lug, the positive pole lug is electrically connected with the positive pole piece, the negative pole lug is electrically connected with the negative pole piece, and the positive pole lug and/or the negative pole lug are/is the battery pole lug of any embodiment. As shown in fig. 1-5.
The battery can be a lithium ion battery, a sodium ion battery, a zinc ion battery, and the like.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (8)
1. A battery tab is characterized in that a strength strengthening area formed by heat treatment is arranged on the surface of the tab.
2. The battery tab as recited in claim 1, wherein the heat treatment process comprises at least one of annealing, normalizing, quenching, and high frequency heating.
3. The battery tab as claimed in claim 1, wherein the heat treatment manner comprises one of a single-sided overall heat treatment, a single-sided partial heat treatment, a double-sided overall heat treatment, and a double-sided partial heat treatment.
4. The battery tab as claimed in claim 1, wherein the tab has first and second surfaces opposite in a thickness direction;
the intensity-enhanced region is formed on all or a partial region of the first surface and/or on all or a partial region of the second surface.
5. The battery tab as claimed in claim 4, wherein the strength enhancing region comprises a plurality of linear strips parallel to or at an angle with respect to the side edges of the tab, and the plurality of linear strips are spaced apart from and parallel to each other on the first surface and/or the second surface.
6. The battery tab as claimed in claim 4, wherein the strength reinforcement areas comprise linear strips parallel to or angled from the tab sides, and a plurality of the strength reinforcement areas are distributed in a cross-grid pattern on the first surface and/or the second surface.
7. The battery tab as claimed in claim 4, wherein the strength reinforcement zone comprises a plurality of curvilinear strips symmetrically distributed on the first and/or second surfaces.
8. A battery comprising a positive plate, a negative plate, a positive tab and a negative tab, wherein the positive tab is electrically connected to the positive plate, and the negative tab is electrically connected to the negative plate, wherein the positive tab and/or the negative tab is the battery tab of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110460492.2A CN115249876A (en) | 2021-04-27 | 2021-04-27 | Battery tab and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110460492.2A CN115249876A (en) | 2021-04-27 | 2021-04-27 | Battery tab and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115249876A true CN115249876A (en) | 2022-10-28 |
Family
ID=83697437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110460492.2A Pending CN115249876A (en) | 2021-04-27 | 2021-04-27 | Battery tab and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115249876A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013018551A1 (en) * | 2011-08-04 | 2013-02-07 | 株式会社村田製作所 | Battery |
| CN103703152A (en) * | 2011-07-25 | 2014-04-02 | 麦格纳国际公司 | Product and process by localized heat treatment of sheet steel |
| CN205645969U (en) * | 2016-03-08 | 2016-10-12 | 宁德时代新能源科技股份有限公司 | Secondary cell utmost point ear and secondary cell |
| JP2018137079A (en) * | 2017-02-21 | 2018-08-30 | Tdk株式会社 | Storage battery |
| KR20200030410A (en) * | 2018-09-12 | 2020-03-20 | 주식회사 엘지화학 | Battery module |
-
2021
- 2021-04-27 CN CN202110460492.2A patent/CN115249876A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703152A (en) * | 2011-07-25 | 2014-04-02 | 麦格纳国际公司 | Product and process by localized heat treatment of sheet steel |
| WO2013018551A1 (en) * | 2011-08-04 | 2013-02-07 | 株式会社村田製作所 | Battery |
| CN205645969U (en) * | 2016-03-08 | 2016-10-12 | 宁德时代新能源科技股份有限公司 | Secondary cell utmost point ear and secondary cell |
| JP2018137079A (en) * | 2017-02-21 | 2018-08-30 | Tdk株式会社 | Storage battery |
| KR20200030410A (en) * | 2018-09-12 | 2020-03-20 | 주식회사 엘지화학 | Battery module |
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