CN1224934A - Battery - Google Patents
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- Publication number
- CN1224934A CN1224934A CN99100016A CN99100016A CN1224934A CN 1224934 A CN1224934 A CN 1224934A CN 99100016 A CN99100016 A CN 99100016A CN 99100016 A CN99100016 A CN 99100016A CN 1224934 A CN1224934 A CN 1224934A
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- Prior art keywords
- battery
- electrode
- negative pole
- battery case
- bent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
This invention is disclosed to improve the heavy load characteristic of a rectangular battery. The laminated electrode within the battery container is bent and formed a arched shape electrode structure so that the positive and negative electrodes are tightly engaged. A pair of faced-to-faced sides which is constituted the battery container are also bent to form an arched shape both directed to same direction to depress the expansion of the battery container due to inner-pressure raised of the battery. This battery structure enables positive electrode and negative electrode to maintain a good engagement in a long time because the force to make electrodes be tighten toward the laminated direction is not weakened even when the pressure in the battery increases, so that battery with good long-term heavy load characteristic is then able to be achieved.
Description
The invention provides a kind of battery that can improve battery performance.
In recent years, along with the enhancing day by day of mobile phone and notebook computer slimming tendency, square battery becomes its desirable driving power.Compare with cylindrical battery, square battery has the little advantage of thickness, so can play facilitation to the slimming of portable electronic equipment.
Yet, to compare with cylindrical battery, the heavy-current discharge performance of square battery is relatively poor.Like this, although used pancake square battery, be the notebook computer unloaded square battery still almost of condition of work with big capacity and heavy-current discharge with the mobile phone of little current work, still using cylindrical battery at present.Because the capacity of cylindrical battery depends on the diameter of battery case.Battery capacious its cell diameter naturally is also big.So, as long as notebook computer use be still cylindrical battery, realize that the thin typeization of notebook computer just is confronted with numerous difficulties.
Moreover, in order to prevent the warm phenomenon of the earth, the waiting and seeing realization early of electronic car of people.Yet electronic car needs the battery of heavy-current discharge equally, the cylindrical battery of still having to rely on like this in one quite long period.In order to obtain high voltage, the electronic car battery is the battery pack that is coupled together by many cells, the slit can occur between battery when arranging mutually owing to the cylindrical battery cylindrical battery, has so just reduced the possessive volume efficient of battery.Be loaded in battery pack on the electronic car with small-sized for good, nature is ideal with the square battery of volume efficiency height (being not easy to produce the slit between battery and the battery) the battery on being applied to electronic car like this.
Compare with cylindrical battery, little although square battery has such as the thickness of battery, strong points such as the volume efficiency height of battery pack, the heavy-current discharge performance of square battery is poorer than cylindrical battery.Square battery and cylindrical battery are attributable to the different of tightness between positive pole and negative pole in the difference on the heavy-current discharge performance.
As shown in figure 11, the cell device of cylindrical battery is clamped barrier film 3 by the negative pole 1 of band shape and strip-shaped positive electrode 2 and is wound into cylindrical making tightly, is placed into afterwards in the columniform battery can.In the cylindrical battery element of being made by said method, compress owing to be wound onto the electrode that inboard electrode is positioned at the outside, like this, the tightness degree of clamping between barrier film positive pole and the negative pole is high.Therefore, when barrier film contained electrolyte (being generally electrolyte), anodal ionic conduction resistance with negative pole can become very little, and the internal resistance of battery reduces too like this, can obtain good heavy-current discharge performance.Yet, even inner pressure of battery rises, columniform battery can be along its diametric expansion, therefore yet, the cylindrical battery element that is placed in the cylindrical battery jar can not expand along diametric(al) yet, and the tightness degree between positive pole and negative pole can not be affected.In sum, even through repeatedly charge and discharge process, the positive pole of cylinder type secondary battery and negative pole still can be in long-term the maintenance compact state, so cylinder type secondary battery can demonstrate superior heavy-current discharge performance over a long time.
The cell device of square battery is to be made by following two kinds of methods.First method is that the negative pole and the positive pole of the slight shape that is rectangle are clamped barrier film, overlapping from level to level forming; Second method is clamped barrier film 3 with the negative pole 1 and the strip-shaped positive electrode 2 of band shape and is wound into the flat-shaped battery element as shown in figure 12, takes in afterwards in the square battery can.By first method, promptly the cell device of making by the electrode of the overlapping slight shape that is rectangle if do not apply any pressure along the laminated direction of electrode, can not reach compact state between positive pole and the negative pole.In addition, can understand from Figure 12, in the flat-shaped battery element of making by second method, it is similar to above-mentioned cylindrical battery element to be positioned at the electrode part that two ends are bent, it is positioned at electrode that the inboard is bent and is positioned at the electrode that the outside is bent and compresses, therefore, it is high to clamp the positive pole and the tightness degree between the negative pole of barrier film.Yet,,, do not reach compact state between positive pole and the negative pole if it is not applied under the situation of any pressure along laminated direction along the laminated most of electrode of the thickness direction of cell device.
Figure 13 showed existing use less be rectangle the shape electrode and the cross-sectional view of the square battery made structure.Figure 14 has showed existing use pancake coiling cell device and the cross-sectional view of the square battery made structure.No matter adopt the battery structure of above-mentioned any square, in square metal can 4, electrode is piled up along the direction with the battery can parallel sided, is sealed in afterwards in the square metal battery jar 4.Under the state that laminated direction compresses electrode along electrode, can not insert laminated cell device in the battery can, the result clamps the positive pole and the negative pole of barrier film can not be closely close mutually.Moreover, even under the state that laminated direction compresses electrode along electrode, successfully laminated cell device to be inserted in the battery cylinder jar 4, the side of battery can 4 can expand, and therefore makes along the compacted electrode of the laminated direction of electrode to become loose.This shows that when barrier film contained electrolyte (normally electrolyte), the ionic conduction resistance between positive pole and negative pole was big, the internal resistance of battery is also big, and the heavy-current discharge performance of battery is poor.
And, when pressing in the battery when rising, the side of square battery jar 4 is easy to expand, and has further weakened along the thrust of the laminated direction of electrode, thereby cause the ionic conduction resistance between positive pole and negative pole bigger, the heavy-current discharge performance of battery becomes poorer.
The present invention makes every effort to improve the heavy-current discharge performance of square battery.
For addressing the above problem, solution of the present invention is that employing its electrode in battery case is bent to arciform battery structure.
Fig. 1 has showed the basic principle of battery of the present invention, and wherein 1 represents negative pole, and 2 represent positive pole, and 3 expression electrolyte are fulcrum with P1 and P2, clamps the opposed facing negative pole of barrier film and becomes arciform with anodal quilt song.The present invention is arciform by battery is bent to, and electrode is changed into along the thrust of (being the relative direction of electrode) of the laminated direction of electrode to the resilience force that flat state recovers, thereby make positive pole and negative pole be in good compact state.
Fig. 2 has showed the basic principle of existing square (platypelloid type) battery: same, and 1 expression negative pole, 2 expressions are anodal, 3 expression electrolyte.Negative pole and positive pole are clamped barrier film, face mutually.Because the laminated direction (being the electrode relative direction) along electrode does not apply any pressure, the tightness degree between positive pole and negative pole is very poor.
The battery of making according to the present invention, even its cell device is that the shape electrode is overlapping when forming by less being rectangle, as shown in Figure 3, all electrodes of this cell device are bent to arciform towards equidirectional, and this battery structure has guaranteed the compact state between positive pole and negative pole.Simultaneously, when cell device is flat coiling body, as shown in Figure 9, in battery can 4, all be bent to arciformly in the same direction along the laminated electrode of the thickness direction of coiling cell device part, like this, anodally can be in compact state with negative pole.Owing to the ionic conduction resistance between its positive pole of the battery of making according to the present invention and negative pole is very little, the interior pressure of battery is also along with reducing, and battery can have superior heavy-current discharge performance.
As Fig. 3 and shown in Figure 9, the present invention also bends to a pair of opposite flank (4A and 4B) of battery case arciform towards equidirectional, so particularly because the effect of the side 4B that is bent towards the battery case inboard is inhibited the battery case expansion that causes because inner pressure of battery rises.So,,, still can not weaken along the thrust of the laminated direction of cell device even because charging causes the inner pressure of battery rising if secondary cell adopts above-mentioned battery structure; Positive pole after experience the discharging and recharging repeatedly and negative pole be maintenance close relation in long-term still.As a result, the secondary cell that has superior heavy-current discharge performance for a long time can be achieved.
Following embodiment will the present invention is further detailed explanation.
Fig. 1 is basic principle figure of the present invention.
Fig. 2 is the basic principle figure of existing square battery.
Fig. 3 is the cross-sectional view of battery of the present invention.
Fig. 4 is the longitudinal section of battery of the present invention.
Fig. 5 is the stereogram of battery can.
Fig. 6 is the cross-sectional view when taking in cell device in the battery can.
Fig. 7 is the ground plan when taking in cell device in the battery can.
Fig. 8 is the installation drawing of expression extruding battery can side.
Fig. 9 is the cross-sectional view of battery of the present invention.
Figure 10 is the cross-sectional view of battery of the present invention.
Figure 11 is the sectional drawing of cylindrical roll around cell device.
Figure 12 is the sectional drawing of pancake coiling cell device.
Figure 13 is the cross-sectional view of existing square battery.
Figure 14 is the cross-sectional view of existing square battery.
Example 1:
With reference to Fig. 3 to Fig. 8, below the manufacturing process of battery of the present invention is made specific description.
At first make negative pole, through heat treated carbon particulate (d002=3,37 dusts) and acetylene black, bonding agent and solvent form slurry according to known existing method.Then this slurry is coated in two sides as the Copper Foil of negative electrode collector equably, in case after the drying, use the roll squeezer press molding, the negative pole of laminating, afterwards, this laminar negative pole is cut into the oblong-shaped negative pole 1a of 40mm * 38mm, the exposed portions serve of the Copper Foil collector body that is provided with in this negative pole end, with the wire bonds of nickel system on this exposed portions serve.
Positive pole also is to make according to known existing method.Lithium cobalt composite oxide (LiCoO as positive active material
2) and conductive agent, bonding agent and solvent form slurry, this slurry is coated in two sides as the aluminium foil of positive electrical body equably, in case after the drying, use the roll squeezer press molding, the shape positive pole of laminating, afterwards, this laminar positive pole is cut into the anodal 2a of oblong-shaped of 40mm * 38mm, the exposed portions serve of the aluminium foil collector body that is provided with in this positive pole end, with the wire bonds of aluminum on this exposed portions serve.
The battery case 4 that uses in example 1 is nickel plating metal cans made of iron, as shown in Figure 5, two side 4A of this metal can, 4B heaves, and the part 41 at jar end 40 has been removed.
The anodal 2a of the off-the-shelf less shape that is rectangle is inserted and is rolled in bag barrier film of shape porous polypropylene system 3.With interlaced being piled up of negative pole 1a of 15 pieces of positive poles making like this and the less shape made from quadrat method that is rectangle, to form cell device.The lead that takes out from 15 pieces of positive poles that constitute cell device is combined into a positive wire 7 and is welded on the anodal outside terminal, and this positive pole outside terminal is fixed by the plastic washer on the lid 10.The lead that takes out from 16 pieces of negative poles is combined into a cathode conductor 5 too, and is soldered on the lid 10.Then, cell device is taken among the battery case 4, shown in the ground plan of the cross-sectional view of Fig. 6 and Fig. 7, when cell device is taken in the battery case 4, because the laminated direction along battery does not apply enough pressure to cell device, slit 23 slightly between negative pole 1 and the anodal 2a like this, relation between the two is very not tight.
Then, as shown in Figure 8 the battery case that cell device is housed is placed in the anchor clamps 30, with the side of stamping machine 31 these battery cases of extruding, stop up the part that is removed of battery case bottom, with laser-beam welding machine the welding of the junction surface of side 4B and bottom 40 is lived.Then, lid is welded to the peristome of battery case, the battery case that cell device is housed is taken out from anchor clamps.At this moment, the section configuration of battery as shown in Figure 3, in battery case laminated negative pole 1a and anodal 2a all be bent to towards equidirectional arciform, the therefore of the present invention basic principle illustrated according to Fig. 1, negative pole 1a and anodal 2a are in good compact state.And, the side 4A of battery case and the side 4B electrode that all are laminated compresses, because the effect of the side 4B that is bent towards the battery case inboard has improved the intensity that the battery case opposing is expanded, therefore, battery case can not expand owing to the resilience force of compacted laminated battery element.
Then, inject the electrolyte into in the battery can, after the injection of having finished electrolyte, a Metal Ball made of iron is welded on the electrolyte inlet 11 so that it is blocked by the electrolyte inlet 11 on lid 10.The pancake lithium rechargeable battery S1 of the battery structure of sealing fully that has has so as shown in Figure 4 just finished.
Example 2:
With reference to Fig. 9 and Figure 10, below example 2 of the present invention is done detailed explanation.At first make laminar negative pole, then will this laminar negative pole make the banded negative pole 1b of wide 40mm, the exposed portions serve of Copper Foil collector body is set in the end of this band shape negative pole, nickel system cathode conductor 5 is welded on this exposed portions serve according to example 1 illustrated method.
Afterwards, the barrier film 3 that negative pole 1b that this is banded and anodal 2b clamp porous polypropylene system, be rolled into the coiling cell device of flat as shown in figure 12, the positive wire 7 that takes out from cell device is welded on this positive pole outside terminal, this positive pole outside terminal is fixed by plastic washer on the lid, the cathode conductor 5 that takes out from cell device is welded on the lid, and this cell device is placed in the battery case 4 identical with example 1.Then,, block the part that is removed of this battery case bottom, the junction surface of side and bottom is welded, lid 10 is welded to the peristome of this battery case with laser-beam welding machine according to the side of the illustrated method extruding battery case of embodiment 1.Then, take to inject the electrolyte in the battery can, Metal Ball is welded on the electrolyte inlet so that this inlet is blocked with the same method of example 1.Have as Fig. 9 and battery structure and complete airtight pancake ion secondary battery S2 shown in Figure 10 and just finished.
Made pancake lithium rechargeable battery S2 has section configuration as shown in Figure 9 in example 2, and the coiling cell device in battery case 4 is by being positioned at electrode that two ends are bent and forming along laminated these two parts of electrode of thickness direction.The part that wherein is bent is positioned at the electrode that the outside is bent and compresses owing to be positioned at electrode that the inboard is bent, anodally is in compact state with negative pole.In addition, as shown in Figure 1, also all be bent to arciformly towards equidirectional along the laminated electrode of thickness direction part, according to basic principle of the present invention as can be known, negative pole 1b and anodal 2b are in good compact state.In addition, the electrode laminated along thickness direction compressed by the side 4A of battery case and side 4B, and the effect of the side 4B that is bent towards the inboard has like this improved the anti-intensity that expands of battery case.So the bounce of laminated battery element can not cause battery case to expand, electrode can be maintained at the state that compresses.
The heavy-current discharge performance test of battery of the present invention
Battery S1 that makes in example 1 and example 2 respectively and battery S2 are charged to full-charge state, under the electric current of 0.2C, 0.5C, 1C, 2C and 3C, discharge then until cut-ff voltage 3.0V, ask the discharge capacity of calculating under each discharging current, with in the discharge capacity of discharging current 1C as 100%, the discharge capacity under each discharging current is as shown in table 1.
In the table 1 relatively the result of battery be that the lithium rechargeable battery that will sell on the market carries out same test and the result that obtains.Relatively battery 1 is the square shaped lithium ion secondary battery of selling on market, and relatively battery 2 is cylinder type lithium ion secondary batteries of selling on the market.
Table 1
| Discharging current | 0.2C | ?0.5C | 1C | 2C | 3C |
| Compare | 104％ | 103％ | 100％ | 67％ | 30％ |
| Compare | 102％ | 101％ | 100％ | 80％ | 51％ |
| Battery (S1) | 102％ | 101％ | 100％ | 81％ | 52％ |
| Battery (S2) | 102％ | 101％ | 100％ | 82％ | 52％ |
From battery 1 relatively and relatively battery 2 the result as seen, compare with existing cylinder type lithium ion secondary battery, (2C, 3C) its discharge capacity significantly reduces existing square shaped lithium ion secondary battery down at heavy-current discharge.That is to say that compare square lithium-ion secondary electricity current discharge properties with existing cylinder type lithium ion secondary battery relatively poor.Existing square shaped lithium ion secondary battery and existing cylinder type lithium ion secondary battery are attributable to the different of tightness degree between positive pole and negative pole in the difference on the heavy-current discharge performance.
Can learn also from table 1, compare that (2C, 3C) the discharge capacity minimizing under is less, this means that battery of the present invention has and the same good heavy-current discharge performance of cylindrical battery at heavy-current discharge for battery S1 of the present invention and S2 with comparing battery 1.
Relatively the battery structure of battery 1 as shown in figure 14.Its cell device is by electrode roll coiled flat, and in the income battery can, as can be seen from Figure 14, the cell device in the battery case is by being positioned at electrode that two ends are bent and forming along the laminated electrode of thickness direction, and wherein most electrode is piled up along thickness direction.Yet, for the electrode part that is piled up along thickness direction, do not apply pressure along laminated direction, therefore compare the big of battery 1 along the positive pole of the laminated electrode of thickness direction and the ionic conduction resistance between negative pole, thereby cause at heavy-current discharge (2.0C, 3.0C) discharging efficiency under the condition reduces, the discharge capacity under the heavy-current discharge condition is little.
In battery of the present invention, all by the lateral surface compressing of battery case, and because the effect of the side 4B that is bent towards the inboard has improved the intensity that the battery case opposing is expanded along the laminated electrode of thickness direction part.Like this, the bounce of laminated cell device just can not cause the expansion of battery case, and electrode can be maintained at the state that compresses, and the ionic conduction resistance between positive pole and negative pole reduces fully, and battery can have superior heavy-current discharge performance.
Although the lithium rechargeable battery of making in example 1 of the present invention and example 2 uses lithium and cobalt oxides to be positive active material, the carbon material is a negative electrode active material, principle of the present invention can be used in other different batteries, no matter be primary cell or secondary cell, even its cell reaction system (for example: nickel-hydrogen secondary cell), active material, or different in battery size specification and the present embodiment, the method for introducing among the present invention still can be implemented.
Because it is arciform that the electrode of use in battery of the present invention is bent to, this electrode just is converted into the thrust that electrode is compressed along the laminated direction of electrode (being the relative direction of electrode) to the bounce that flat state recovers.So the positive pole and the negative pole of battery of the present invention are in compact state, the ionic conduction resistance between positive pole and negative pole is little, has superior heavy-current discharge performance.In addition, a pair of opposite flank of the battery case of formation battery of the present invention also is bent to arciform towards equidirectional, therefore, has improved the intensity that the battery case opposing is expanded.Like this, even caused inner pressure of battery to rise by charging, the battery case side can not weakened the thrust of cell device yet, through charging and discharging process repeatedly, anodal and negative pole still can keep compact state in long-term, thereby makes the heavy-current discharge performance of battery keep superior over a long time.In addition and since the side of battery case towards equidirectional by hunch, when the synthetic battery pack of battery pack, the side of the projection of battery case and recessed side can be combined together, to avoid the bigger slit of generation between battery and battery.
In sum, have the flat-shaped battery of superior heavy-current discharge performance, the battery that has high volume efficiency (being not easy to produce the slit between battery and battery) shape can be achieved.No matter the present invention to the slimming of the portable electric product that needs heavy-current discharge performance, has still done great contribution to electronic car with the miniaturization of battery, has very high industrial value.
Claims (4)
1, a kind of its electrode in battery case by the battery of hunch.
2, a kind ofly pack into and be sealed in the battery case and the battery of making to pancake rolled electrode element that is rolled into by band electrode of major general, in this battery case, this pancake rolled electrode element all be bent to arciform along the laminated part of thickness direction towards identical direction.
3, battery as claimed in claim 1 or 2, a pair of opposite flank that constitutes battery case is bent to arciform towards equidirectional.
4, battery as claimed in claim 3, taken in the battery case that is removed of a part of its bottom when the cell device that constitutes by negative or positive electrode at least after, by connecting this battery case side and bottom to block the part that this battery case bottom is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99100016A CN1224934A (en) | 1998-01-05 | 1999-01-05 | Battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31969/1998 | 1998-01-05 | ||
| CN99100016A CN1224934A (en) | 1998-01-05 | 1999-01-05 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1224934A true CN1224934A (en) | 1999-08-04 |
Family
ID=5269731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99100016A Pending CN1224934A (en) | 1998-01-05 | 1999-01-05 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1224934A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316645C (en) * | 2001-08-24 | 2007-05-16 | 皇家飞利浦电子股份有限公司 | Method of manufacturing a lithium battery, a lithium battery and an electrical appliance |
| CN104810485A (en) * | 2014-01-28 | 2015-07-29 | 三星Sdi株式会社 | Battery pack |
| CN105006531A (en) * | 2014-04-16 | 2015-10-28 | 三星Sdi株式会社 | Battery pack |
| CN108886171A (en) * | 2016-03-24 | 2018-11-23 | 株式会社Lg化学 | battery |
| US20200185755A1 (en) | 2009-02-09 | 2020-06-11 | Varta Microbattery Gmbh | Button cells and method of producing same |
| WO2020140642A1 (en) * | 2018-12-30 | 2020-07-09 | 宁德时代新能源科技股份有限公司 | Battery module, battery pack and vehicle |
| US10804506B2 (en) | 2009-06-18 | 2020-10-13 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
-
1999
- 1999-01-05 CN CN99100016A patent/CN1224934A/en active Pending
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316645C (en) * | 2001-08-24 | 2007-05-16 | 皇家飞利浦电子股份有限公司 | Method of manufacturing a lithium battery, a lithium battery and an electrical appliance |
| US11233264B2 (en) | 2009-02-09 | 2022-01-25 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11276875B2 (en) | 2009-02-09 | 2022-03-15 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11258092B2 (en) | 2009-02-09 | 2022-02-22 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11024869B2 (en) | 2009-02-09 | 2021-06-01 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11233265B2 (en) | 2009-02-09 | 2022-01-25 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US20200185755A1 (en) | 2009-02-09 | 2020-06-11 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11791493B2 (en) | 2009-02-09 | 2023-10-17 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US10971776B2 (en) | 2009-06-18 | 2021-04-06 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US10804506B2 (en) | 2009-06-18 | 2020-10-13 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11362385B2 (en) | 2009-06-18 | 2022-06-14 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024906B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024905B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11791512B2 (en) | 2009-06-18 | 2023-10-17 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11362384B2 (en) | 2009-06-18 | 2022-06-14 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11158896B2 (en) | 2009-06-18 | 2021-10-26 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11217844B2 (en) | 2009-06-18 | 2022-01-04 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024904B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024907B1 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| CN104810485B (en) * | 2014-01-28 | 2019-08-13 | 三星Sdi株式会社 | Battery pack |
| CN104810485A (en) * | 2014-01-28 | 2015-07-29 | 三星Sdi株式会社 | Battery pack |
| US10714712B2 (en) | 2014-04-16 | 2020-07-14 | Samsung Sdi Co., Ltd. | Battery pack |
| CN105006531A (en) * | 2014-04-16 | 2015-10-28 | 三星Sdi株式会社 | Battery pack |
| CN105006531B (en) * | 2014-04-16 | 2020-05-29 | 三星Sdi株式会社 | Battery pack |
| CN108886171A (en) * | 2016-03-24 | 2018-11-23 | 株式会社Lg化学 | battery |
| US11705575B2 (en) | 2018-12-30 | 2023-07-18 | Contemporaty Amperex Technlogy Co., Limited | Battery module, battery pack, and vehicle |
| WO2020140642A1 (en) * | 2018-12-30 | 2020-07-09 | 宁德时代新能源科技股份有限公司 | Battery module, battery pack and vehicle |
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