CN113871807A - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
- Publication number
- CN113871807A CN113871807A CN202010614980.XA CN202010614980A CN113871807A CN 113871807 A CN113871807 A CN 113871807A CN 202010614980 A CN202010614980 A CN 202010614980A CN 113871807 A CN113871807 A CN 113871807A
- Authority
- CN
- China
- Prior art keywords
- battery
- out position
- leading
- tab
- thickness
- 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
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a battery and a battery pack, wherein the battery comprises: the battery cell is provided with at least one pole core, each pole core is provided with a plurality of lugs, the lugs are converged and form a lug converging leading-out position, and the thickness of the battery cell and the lug converging leading-out position of each pole core are configured into: the distance between the tab confluent leading-out position and the central axis of the pole core is changed in a manner of negative correlation with the thickness of the battery core. From this, through making utmost point ear converge the distance between leading-out position and the utmost point core the central axis and change with the thickness of electric core negative correlation, utmost point ear converges the leading-out position at utmost point ear and gathers together the back, can make the angle of buckling of utmost point ear suitable, can guarantee that utmost point ear can not extrude the diaphragm, reduces the damaged risk of diaphragm to can reduce the inside risk that takes place the short circuit of electric core, and then can promote the safety in utilization of battery.
Description
Technical Field
The invention relates to the field of batteries, in particular to a battery and a battery pack with the same.
Background
Among the correlation technique, be equipped with the utmost point core in the current electric core, be equipped with a plurality of utmost point ears in the utmost point core, a plurality of utmost point ears are drawn forth the back and are gathered together, a plurality of utmost point ears can take place to buckle, but the angle of buckling of utmost point ear is great, utmost point ear can extrude the diaphragm, make positive plate, diaphragm, negative pole piece three in close contact with, it is damaged probably to be can by extruded diaphragm in the battery use, lead to diaphragm insulation failure, make positive plate and negative pole piece contact, arouse the inside short circuit that takes place of electric core, the safety in utilization of battery has been reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a battery, which can make the bending angle of the tab suitable, and can ensure that the tab does not extrude the diaphragm, and reduce the risk of damage of the diaphragm, so as to reduce the risk of short circuit inside the battery cell, and further improve the safety of the battery.
The invention further provides a battery pack.
The battery according to the present invention includes: the battery cell is provided with at least one pole core, each pole core is provided with a plurality of lugs, the lugs are converged and form a lug converging leading-out position, and the thickness of the battery cell and the lug converging leading-out position of each pole core are configured into: the distance between the tab confluent leading-out position and the central axis of the pole core is changed in a manner of negative correlation with the thickness of the battery core.
According to the battery provided by the invention, the distance between the tab converging and leading-out position and the central axis of the pole core is changed in a manner of negative correlation with the thickness of the battery core, so that after the tabs are converged together at the tab converging and leading-out position, the bending angle of the tabs can be proper, the tabs can be ensured not to extrude a diaphragm, the risk of damage of the diaphragm is reduced, the risk of short circuit in the battery core can be reduced, and the use safety of the battery can be improved.
In some examples of the invention, the tab confluent lead-out position comprises a zero lead-out position and a middle lead-out position; when the thickness of the battery cell is smaller than or equal to a first preset thickness D1, the tab converging and leading-out position is located at the zero leading-out position; when the thickness of the battery cell is greater than the first preset thickness D1 and less than or equal to a second preset thickness D2, the tab converging and leading-out position is at an offset leading-out position between the zero leading-out position and the middle leading-out position; when the thickness of the battery cell is greater than the second preset thickness D2, the tab converging and leading-out position is located at the middle position leading-out position; wherein the first predetermined thickness D1 is smaller than the second predetermined thickness D2.
In some examples of the present invention, the difference D3 between the second preset thickness D2 and the first preset thickness D1 satisfies: d3 is more than or equal to 10mm and less than or equal to 20 mm.
In some examples of the invention, the D3 satisfies: d3 ═ 15 mm.
In some examples of the invention, the D1 is 50mm and the D2 is 65 mm.
In some examples of the invention, when the tab confluent lead-out position is at the zero lead-out position, the thickness of the pole core is less than or equal to 25 mm.
In some examples of the invention, when the tab merging lead-out position is at the offset lead-out position, the thickness of the pole core is greater than or equal to 12.5mm and less than or equal to 32.5 mm.
In some examples of the present invention, when the tab merging lead-out position is located at the offset lead-out position, a distance a between the offset lead-out position and an outer ring of the pole core satisfies: a is more than or equal to 2mm and less than or equal to 14 mm.
In some examples of the present invention, when the tab merging lead-out position is at the middle lead-out position, the battery further includes: and the transition piece is used for connecting the pole lugs.
In some examples of the present invention, the transition piece has a first sub-transition piece for connecting in parallel with the tab and a second sub-transition piece for connecting in parallel with the cap plate lead-out piece.
The battery pack comprises the battery.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a cross-sectional view of a battery according to an embodiment of the present invention;
fig. 2 is a sectional view of a pole core with a tab junction lead-out position in a zero lead-out position according to an embodiment of the present invention;
fig. 3 is a sectional view of a pole core with a tab merge lead-out position in an offset lead-out position according to an embodiment of the invention;
fig. 4 is a sectional view of a pole core with a tab junction lead-out position at a middle lead-out position according to an embodiment of the present invention.
Reference numerals:
a battery 10;
an electric core 1; a pole core 11; a tab 12;
a tab convergence leading-out position 2; a zero leading-out position 21; a median lead-out position 22; an offset lead-out position 23;
a transition piece 3; a cover plate leading-out sheet 4; pole core central axis 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A battery 10 according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a battery 10 according to an embodiment of the present invention includes: electric core 1, electric core 1 have at least one pole piece 11, it should be noted that electric core 1 may have one pole piece 11, two pole pieces 11, three pole pieces 11, four pole pieces 11, etc., each pole piece 11 has a plurality of tabs 12, a plurality of tabs 12 converge and form a tab convergence lead-out position 2, the thickness of electric core 1 and the tab convergence lead-out position 2 of each pole piece 11 are configured as follows: the distance between the tab junction lead-out position 2 and the central axis 5 of the pole core 11 changes in a manner of negatively correlating with the thickness of the battery cell 1, and it should be noted that the tab junction lead-out position 2 includes a zero lead-out position 21 and a middle lead-out position 22, the middle lead-out position 22 coincides with the central axis 5 of the pole core, in the thickness direction of the battery cell 1, the thickness direction of the battery cell 1 refers to the up-down direction in fig. 2, 3 and 4, the greater the thickness of the battery cell 1, the closer the tab junction lead-out position 2 is to the middle lead-out position 22, and the smaller the thickness of the battery cell 1, the closer the tab junction lead-out position 2 is to the zero lead-out position 21. When the battery cell 1 has a plurality of pole cores 11, the thickness of the battery cell 1 is the sum of the thicknesses of the plurality of pole cores 11.
Wherein, a plurality of tabs 12 are led out and then gathered together at a tab converging leading-out position 2, the tab converging leading-out position 2 is arranged between a zero leading-out position 21 and a middle leading-out position 22 or between the zero leading-out position 21 or the middle leading-out position 22 according to different thicknesses of different battery cores 1, the tabs 12 are gathered together at the tab converging leading-out position 2, compared with the prior art, aiming at the battery cores 1 with different thicknesses, different tab converging and leading-out positions 2 are adopted, so that the bending angle of the tab 12 is proper, can ensure that the electrode lug 12 can not extrude the diaphragm, avoid the close contact of the positive plate, the diaphragm and the negative plate, reduce the risk of the damage of the diaphragm, prevent the insulation failure of the diaphragm, avoid the direct contact of the positive plate and the negative plate, therefore, the risk of short circuit inside the battery cell 1 can be reduced, and the use safety of the battery 10 can be improved.
From this, through making utmost point ear converge the distance between the central axis 5 of leading out position 2 and utmost point core 11 and the thickness of electric core 1 changes with negative correlation, utmost point ear 12 converges after leading out position 2 gathers together at utmost point ear, can make utmost point ear 12 the angle of buckling suitable, can guarantee that utmost point ear 12 can not extrude the diaphragm, reduces the damaged risk of diaphragm to can reduce the inside risk that takes place the short circuit of electric core 1, and then can promote battery 10's safety in utilization.
In some embodiments of the present invention, as shown in fig. 2, when the thickness of the electric core 1 is less than or equal to the first preset thickness D1, the tab merging and leading-out position 2 is located at the zero-position leading-out position 21, that is, when the thickness of the electric core 1 is less than or equal to the first preset thickness D1, the tab merging and leading-out position 2 is located at the zero-position leading-out position 21, when the pole core 11 is a winding pole core, in the thickness direction of the pole core 11, the zero-position leading-out position 21 is located on an axis where the outermost layer of the pole core 11 is located, and when the pole core 11 is a laminated pole core, in the thickness direction of the pole core 11, the zero-position leading-out position 21 is located on an axis where the outermost layer of the pole core 11 is located, and the axis is parallel to the pole core central axis 5. Set up like this and can guarantee to be located outmost utmost point ear 12 and set up upright, the inlayer utmost point ear 12 that is located outmost utmost point ear 12 inboard supports utmost point ear 12 through the space ring, the angle of buckling that makes utmost point ear 12 is more suitable, can further guarantee utmost point ear 12 can not extrude the diaphragm, further avoid positive plate, the diaphragm, negative pole piece three in close contact with, further reduce the damaged risk of diaphragm, further avoid positive plate and negative pole piece direct contact, thereby can further reduce the risk of 1 inside emergence short circuits of electric core, and then can further promote battery 10's safety in utilization.
In some embodiments of the present invention, as shown in fig. 3, when the thickness of the battery cell 1 is greater than the first preset thickness D1 and less than or equal to the second preset thickness D2, the tab converging and leading-out position 2 is located at the offset leading-out position 23 between the zero leading-out position 21 and the middle leading-out position 22, such arrangement can ensure that the bending angle of the tab 12 is more suitable, and at this time, the tab 12 is supported by the aid of the spacer ring, so as to further ensure that the tab 12 does not extrude the diaphragm, further avoid the tight contact of the positive plate, the diaphragm, and the negative plate, further reduce the risk of the diaphragm damage, further avoid the direct contact of the positive plate and the negative plate, further reduce the risk of short circuit occurring inside the battery cell 1, and further improve the safety of the battery 10. And, it is also convenient for a plurality of tabs 12 to converge at the tab junction lead-out position 2.
In some embodiments of the present invention, as shown in fig. 4, when the thickness of the electrical core 1 is greater than the second preset thickness D2, the tab junction leading-out position 2 is located at the median leading-out position 22, or it can be understood that, when the thickness of the electrical core 1 is greater than the second preset thickness D2, the tab junction leading-out position 2 is located at the median leading-out position 22, and the median leading-out position 22 is the central axis 5 of the electrode core 11, such an arrangement can ensure that the bending angle of the tab 12 is more suitable, can further ensure that the tab 12 does not extrude the separator, further avoid the tight contact of the positive plate, the separator, and the negative plate, further reduce the risk of the separator damage, and further avoid the direct contact of the positive plate and the negative plate, thereby further reducing the risk of the short circuit occurring inside the electrical core 1, and further improving the safety of the battery 10. And, it is also convenient for a plurality of tabs 12 to converge at the tab junction lead-out position 2.
The first predetermined thickness D1 is smaller than the second predetermined thickness D2.
In some embodiments of the present invention, the difference between the second predetermined thickness D2 and the first predetermined thickness D1 is D3, and the D3 satisfies the following relation: d3 is more than or equal to 10mm and less than or equal to 20mm, preferably, D3 is 15mm, so that the tab converging and leading-out position 2 can be better arranged at the offset leading-out position 23 or the zero leading-out position 21 or the middle leading-out position 22 according to different thicknesses of different battery cores 1, and after a plurality of tabs 12 are converged together at the tab converging and leading-out position 2, the bending angle of the tabs 12 can be better ensured.
In some embodiments of the present invention, D1 is 50mm, D2 is 65mm, so that the technical effect that the difference between the second preset thickness D2 and the first preset thickness D1 is 15mm can be achieved, and it can also be ensured that the tab merging and leading-out position 2 is set at an appropriate position, so that the operational reliability of the battery cell 1 can be ensured.
In some embodiments of the invention, when the tab converging and leading-out position 2 is located at the zero-position leading-out position 21, the thickness of a single tab 11 is less than or equal to 25mm, so that the thickness of the tab 11 is suitable, a plurality of tabs 12 are convenient to converge at the zero-position leading-out position 21, and after the tabs 12 converge together at the zero-position leading-out position 21, the bending angle of the tabs 12 can be more suitable, so that the tab 12 leading-out positions of the tab 11 with different thicknesses are more reasonable, the bending angle of the tab 12 is kept in a better angle range, and the extrusion of the tab 12 is avoided to generate short circuit.
In some embodiments of the present invention, when the tab converging and leading-out position 2 is located at the offset leading-out position 23, the thickness of a single tab 11 is greater than or equal to 12.5mm and less than or equal to 32.5mm, so that the thickness of the tab 11 is suitable, a plurality of tabs 12 are convenient to converge at the offset leading-out position 23, and after the tabs 12 converge together at the offset leading-out position 23, the bending angle of the tabs 12 can be more suitable, so that the leading-out positions of the tabs 12 of the tab 11 with different thicknesses are more reasonable, and the bending angle of the tabs 12 is kept in a better angle range, thereby preventing the tabs 12 from being extruded to generate short circuit.
In some embodiments of the present invention, as shown in fig. 3, when the tab merging lead-out position 2 is located at the offset lead-out position 23, the distance a between the offset lead-out position 23 and the outer ring of the pole core 11 satisfies: a is more than or equal to 2mm and less than or equal to 14mm, so that a plurality of lugs 12 can be more conveniently gathered at the bias leading-out position 23, and after the lugs 12 are gathered together at the bias leading-out position 23, the bending angle of the lugs 12 can be more suitable, so that the leading-out positions of the lugs 12 of the pole cores 11 with different thicknesses are more reasonable, the bending angle of the lugs 12 is kept in a better angle range, and the extrusion of the lugs 12 is avoided to generate short circuit.
In some embodiments of the present invention, as shown in fig. 1, when the tab merging lead-out position 2 is located at the middle lead-out position 22, the battery 10 may further include: a transition piece 3 for connecting the tabs 12. When the thickness of electric core 1 is greater than second predetermined thickness D2, need increase transition piece 3 and connect between piece 4 is drawn forth to the apron of utmost point ear 12 and battery 10, so set up and can guarantee to draw forth piece 4 reliably welding together with utmost point ear 12 and apron.
According to an embodiment of the present invention, as shown in fig. 1, the transition piece 3 may be configured as a flat plate structure, when welding the tab 12 and the transition piece 3, the transition piece 3 extends along the length direction of the battery cell 1 and is welded to the tab 12, that is, the extension direction of the transition piece 3 and the extension direction of the tab 12 are kept parallel, then the tab 12 is bent to keep the transition piece 3 and the cover plate lead-out piece 4 parallel, and the transition piece 3 and the cover plate lead-out piece 4 are welded together.
According to another embodiment of the present invention, the transition piece 3 may have a first sub-transition piece and a second sub-transition piece, the first sub-transition piece is used for being connected with the tab 12 in parallel, and the second sub-transition piece is used for being connected with the cover plate lead-out piece 4 in parallel, so that the tab 12 can be conveniently connected with the cover plate lead-out piece 4, and the tab 12 and the cover plate lead-out piece 4 can be reliably welded together.
According to the battery pack provided by the embodiment of the invention, the battery 10 provided by the embodiment of the invention has the advantages that the bending angle of the tab 12 is appropriate, the tab 12 can be ensured not to extrude a diaphragm, and the risk of damage of the diaphragm is reduced, so that the risk of short circuit in the battery core 1 can be reduced, the use safety of the battery 10 can be further improved, and the use safety of the battery pack can also be improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A battery, comprising:
the battery cell is provided with at least one pole core, each pole core is provided with a plurality of lugs, the lugs are converged and form a lug converging leading-out position, and the thickness of the battery cell and the lug converging leading-out position of each pole core are configured into: the distance between the tab confluent leading-out position and the central axis of the pole core is changed in a manner of negative correlation with the thickness of the battery core.
2. The battery of claim 1, wherein the tab confluent exit positions include a zero exit position and a neutral exit position;
when the thickness of the battery cell is smaller than or equal to a first preset thickness D1, the tab converging and leading-out position is located at the zero leading-out position;
when the thickness of the battery cell is greater than the first preset thickness D1 and less than or equal to a second preset thickness D2, the tab converging and leading-out position is at an offset leading-out position between the zero leading-out position and the middle leading-out position;
when the thickness of the battery cell is greater than the second preset thickness D2, the tab converging and leading-out position is located at the middle position leading-out position;
wherein the first predetermined thickness D1 is smaller than the second predetermined thickness D2.
3. The battery according to claim 2, wherein the difference D3 between the second predetermined thickness D2 and the first predetermined thickness D1 satisfies: d3 is more than or equal to 10mm and less than or equal to 20 mm.
4. The battery of claim 3, wherein D3 satisfies: d3 ═ 15 mm.
5. The battery of any one of claims 2-4, wherein the D1-50 mm and the D2-65 mm.
6. The battery of claim 5 wherein the pole core thickness is less than or equal to 25mm when the tab merge exit position is in the zero exit position.
7. The battery according to claim 5, wherein the thickness of the pole core is 12.5mm or more and 32.5mm or less when the tab merging lead-out position is at the offset lead-out position.
8. The battery according to claim 5, wherein when the tab merging extraction position is at the offset extraction position, a distance A between the offset extraction position and an outer ring of the pole core satisfies: a is more than or equal to 2mm and less than or equal to 14 mm.
9. The battery of claim 5, wherein when the tab merging extraction position is in the neutral extraction position, the battery further comprises: and the transition piece is used for connecting the pole lugs.
10. The battery of claim 9, wherein the transition piece has a first sub-transition piece for connecting in parallel with the tab and a second sub-transition piece for connecting in parallel with a cap plate lead-out piece.
11. A battery pack comprising a battery according to any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614980.XA CN113871807A (en) | 2020-06-30 | 2020-06-30 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614980.XA CN113871807A (en) | 2020-06-30 | 2020-06-30 | Battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113871807A true CN113871807A (en) | 2021-12-31 |
Family
ID=78981277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010614980.XA Pending CN113871807A (en) | 2020-06-30 | 2020-06-30 | Battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113871807A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517807A (en) * | 2006-07-24 | 2009-08-26 | 株式会社Lg化学 | Electrode assembly having electrode tabs of the same size in joint portion thereof and electrochemical cell containing the same |
| CN202172099U (en) * | 2011-08-05 | 2012-03-21 | 山东齐星新能源科技有限责任公司 | Li-ion battery roll core polar lug bending device |
| CN202930467U (en) * | 2010-02-09 | 2013-05-08 | 三菱重工业株式会社 | Secondary battery and manufacturing apparatus of secondary battery |
| JP2014191967A (en) * | 2013-03-27 | 2014-10-06 | Murata Mfg Co Ltd | Battery |
| CN104380500A (en) * | 2012-06-26 | 2015-02-25 | 株式会社丰田自动织机 | Accumulator device |
| CN104409768A (en) * | 2014-11-25 | 2015-03-11 | 东莞新能源科技有限公司 | Lithium battery |
| JP2016110948A (en) * | 2014-12-10 | 2016-06-20 | 株式会社豊田自動織機 | Lithium ion secondary battery |
| JP2018006114A (en) * | 2016-06-30 | 2018-01-11 | 株式会社豊田自動織機 | Power storage device |
| KR20180072065A (en) * | 2016-12-21 | 2018-06-29 | 주식회사 엘지화학 | Battery Cell and Manufacturing Method thereof |
| CN108292730A (en) * | 2015-11-25 | 2018-07-17 | Nec能源元器件株式会社 | Electrochemical device |
| CN207690905U (en) * | 2018-01-12 | 2018-08-03 | 宁德时代新能源科技股份有限公司 | Secondary cell and automobile |
| CN108604660A (en) * | 2016-11-30 | 2018-09-28 | 株式会社Lg化学 | With double welded battery units |
| JP2019061878A (en) * | 2017-09-27 | 2019-04-18 | Tdk株式会社 | Electrochemical device |
| CN209401759U (en) * | 2019-01-30 | 2019-09-17 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| CN110326133A (en) * | 2017-02-27 | 2019-10-11 | 三洋电机株式会社 | Rectangular secondary cell and its manufacturing method |
| CN210172794U (en) * | 2019-05-30 | 2020-03-24 | 万向一二三股份公司 | Improve torn prewelding retaining device of utmost point ear foil |
-
2020
- 2020-06-30 CN CN202010614980.XA patent/CN113871807A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517807A (en) * | 2006-07-24 | 2009-08-26 | 株式会社Lg化学 | Electrode assembly having electrode tabs of the same size in joint portion thereof and electrochemical cell containing the same |
| CN202930467U (en) * | 2010-02-09 | 2013-05-08 | 三菱重工业株式会社 | Secondary battery and manufacturing apparatus of secondary battery |
| CN202172099U (en) * | 2011-08-05 | 2012-03-21 | 山东齐星新能源科技有限责任公司 | Li-ion battery roll core polar lug bending device |
| CN104380500A (en) * | 2012-06-26 | 2015-02-25 | 株式会社丰田自动织机 | Accumulator device |
| JP2014191967A (en) * | 2013-03-27 | 2014-10-06 | Murata Mfg Co Ltd | Battery |
| CN104409768A (en) * | 2014-11-25 | 2015-03-11 | 东莞新能源科技有限公司 | Lithium battery |
| JP2016110948A (en) * | 2014-12-10 | 2016-06-20 | 株式会社豊田自動織機 | Lithium ion secondary battery |
| CN108292730A (en) * | 2015-11-25 | 2018-07-17 | Nec能源元器件株式会社 | Electrochemical device |
| JP2018006114A (en) * | 2016-06-30 | 2018-01-11 | 株式会社豊田自動織機 | Power storage device |
| CN108604660A (en) * | 2016-11-30 | 2018-09-28 | 株式会社Lg化学 | With double welded battery units |
| KR20180072065A (en) * | 2016-12-21 | 2018-06-29 | 주식회사 엘지화학 | Battery Cell and Manufacturing Method thereof |
| CN110326133A (en) * | 2017-02-27 | 2019-10-11 | 三洋电机株式会社 | Rectangular secondary cell and its manufacturing method |
| JP2019061878A (en) * | 2017-09-27 | 2019-04-18 | Tdk株式会社 | Electrochemical device |
| CN207690905U (en) * | 2018-01-12 | 2018-08-03 | 宁德时代新能源科技股份有限公司 | Secondary cell and automobile |
| CN209401759U (en) * | 2019-01-30 | 2019-09-17 | 宁德时代新能源科技股份有限公司 | Secondary cell |
| CN210172794U (en) * | 2019-05-30 | 2020-03-24 | 万向一二三股份公司 | Improve torn prewelding retaining device of utmost point ear foil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190280280A1 (en) | Secondary battery | |
| CN113330631B (en) | Electrode assembly, electrochemical device, and electronic device | |
| CN205429058U (en) | Secondary battery | |
| US20180123161A1 (en) | Secondary battery | |
| CN113193163B (en) | Battery cell and power utilization device | |
| KR20120018723A (en) | Jelly-roll of improved structure and secondary battery comprising the same | |
| CN114204224B (en) | Battery cell | |
| US10833371B2 (en) | Wound-type cell | |
| CN205429100U (en) | Lithium ion cell | |
| US10693192B2 (en) | Wound-type cell | |
| US11699557B2 (en) | Power storage module | |
| CN212571262U (en) | Laminated battery core and soft package battery | |
| CN211578871U (en) | Prevent utmost point ear and electric core of electric core short circuit | |
| CN113871807A (en) | Battery and battery pack | |
| US10505216B2 (en) | Secondary battery | |
| CN219778914U (en) | Battery cell structure, lithium battery and electronic equipment | |
| CN112117497A (en) | Battery cell and battery cell forming method | |
| CN202384439U (en) | Lithium ion battery winding structure | |
| CN112490596A (en) | Battery cell, preparation method thereof and single battery | |
| CN114204222A (en) | Battery and battery pack | |
| CN217214848U (en) | Winding type battery cell and cylindrical battery with same | |
| CN209747629U (en) | Compound utmost point ear subassembly, soft packet of power battery and vehicle | |
| CN110620207A (en) | Soft connecting sheet for lithium ion battery and lithium ion battery | |
| CN220553584U (en) | Battery and battery device | |
| CN219677309U (en) | Winding cell and battery structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |