CN204927440U - Lamination formula secondary cell - Google Patents
Lamination formula secondary cell Download PDFInfo
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- CN204927440U CN204927440U CN201520746565.4U CN201520746565U CN204927440U CN 204927440 U CN204927440 U CN 204927440U CN 201520746565 U CN201520746565 U CN 201520746565U CN 204927440 U CN204927440 U CN 204927440U
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- lug
- fuse area
- ploe
- secondary cell
- insulating barrier
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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
Abstract
The utility model relates to an energy storage device field especially relates to a lamination formula secondary cell, and including electric core, electric core has first pole piece range upon range of each other, second pole piece and setting the diaphragm first pole piece and second pole piece between opposite with first pole piece electrical property, the battery still includes the first ploe post, the second ploe post opposite with first ploe post electrical property, a plurality of first ploe ears and a plurality of second ploe ear, the first ploe post is realized the electricity through a plurality of first ploe ears and electric core and is connected, the second ploe post is realized the electricity through a plurality of second ploe ears and electric core and is connected, every first ploe ear all sets up first fuse area, every first ploe ear both sides surface all sets up the first insulation layer, and/or every second ploe ear all sets up the second fuse area, every first ploe ear both sides surface all sets up the first insulation layer and/or every second ploe ear both sides surface all sets up the second insulating layer, the lamination formula secondary cell that this application provided can effectively avoid the utmost point ear after the fusing to keep in contact, secondary cell's security performance has been improved by a wide margin.
Description
Technical field
The application relates to energy storage device field, particularly relates to a kind of stacked secondary cell.
Background technology
Along with the development of modern society and the enhancing of people's environmental consciousness, and lithium ion battery has high-energy, high power capacity and high-power feature, and electric automobile more and more tends to use lithium ion battery as its energy source.Along with the active demand that electric automobile promotes the mileage that cruises, the energy density of secondary cell improves constantly.Secondary cell in use in the face of various critical conditions and abuse, all likely can cause thermal runaway.Therefore safety problem seems very important, especially for the secondary cell with high-energy-density.
Under critical conditions and abuse condition, probably there is internal short-circuit in stacked secondary cell.Once occur, namely can cause the heavy-current discharge behavior of inside battery, battery temperature is raised.To the thermal runaway of battery be caused time serious, and cause fuel gas ejection in battery even battery explosion to occur, cause security incident.
In view of this, the necessary stacked secondary cell providing a kind of security performance higher.
Utility model content
This application provides a kind of stacked secondary cell, can security performance be improved.
This application provides a kind of stacked secondary cell, comprise battery core, the diaphragm that described battery core has the first mutually stacked pole piece second pole piece electrically contrary with described first pole piece and is arranged between described first pole piece and described second pole piece; Described stacked secondary cell also comprises the first pole, second pole electrically contrary with described first pole, multiple first lug and multiple second lug, described first pole realizes being electrically connected with described battery core by multiple described first lug, described second pole realizes being electrically connected with described battery core by multiple described second lug
Each described first lug all arranges the first fuse area, at least arranges the first insulating barrier in the first fuse area both side surface in each described first lug,
And/or
Each described second lug all arranges the second fuse area, at least arranges the second insulating barrier in the second fuse area both side surface in each described second lug.
Preferably, one or more insurance hole is provided with in described first fuse area and/or described second fuse area.
Preferably, the area in described insurance hole accounts for 10 ~ 90% of described first fuse area or the described second fuse area gross area.
Preferably, the sidepiece of described first fuse area and/or described second fuse area is provided with one or more breach.
Preferably, one or more snippets indentation is provided with in described first fuse area and/or described second fuse area.
Preferably,
Described first lug also comprises the first bonding pad and the second bonding pad, and described first fuse area is electrically connected with described first pole by described first bonding pad, and described first fuse area is electrically connected with described battery core by described second bonding pad,
And/or
Described second lug also comprises the 3rd bonding pad and the 4th bonding pad, and described second fuse area is electrically connected with described second pole by described 3rd bonding pad, and described second fuse area is electrically connected with described battery core by described 4th bonding pad.
Preferably,
Described first insulating barrier accounts for 0 ~ 7/10 of the total length of described first lug near the side of the junction of described first lug and described battery core to the distance of this junction, described first insulating barrier accounts for 1/10 ~ 8/10 of the total length of described first lug away from the side of the junction of described first lug and described battery core to the distance of this junction
And/or
Described second insulating barrier accounts for 0 ~ 7/10 of the total length of described second lug near the side of the junction of described second lug and described battery core to the distance of this junction, and described second insulating barrier accounts for 1/10 ~ 8/10 of the total length of described second lug away from the side of the junction of described second lug and described battery core to the distance of this junction.
Preferably, the thickness of described first insulating barrier and/or described second insulating barrier is 1 ~ 50 μm.
Preferably, described first insulating barrier and/or described second insulating barrier are ceramic material or organic material.
The technical scheme that the application provides can reach following beneficial effect:
The secondary cell that the application provides by arranging independently fuse area on lug, and arranges insulating barrier outside fuse area, the lug after fusing effectively can be avoided to keep in touch, significantly improve the security performance of secondary cell.
Should be understood that, it is only exemplary that above general description and details hereinafter describe, and can not limit the application.
Accompanying drawing explanation
The overall structure schematic diagram of the stacked secondary cell inside that Fig. 1 provides for the embodiment of the present application;
Fig. 2 is the cutaway view of making along the X-X line in Fig. 1;
The syndeton schematic diagram of the first pole piece that Fig. 3 provides for the embodiment of the present application and the first lug;
Fig. 4 is the partial enlargement structural representation of part A in Fig. 3, and be wherein provided with circular insurance hole in the first fuse area, the first insulating barrier is only arranged on the first fuse area both side surface;
Fig. 5 is the partial enlargement structural representation of part A in Fig. 3, and be wherein provided with Long Circle insurance hole in fuse area, the first insulating barrier is arranged on the both side surface of the first fuse area and the second bonding pad simultaneously;
Fig. 6 is the partial enlargement structural representation of the first lug (in Fig. 3 part A), and be wherein provided with rectangle insurance hole in the first fuse area, the first insulating barrier is arranged on the both side surface of the first fuse area and the second bonding pad simultaneously;
Fig. 7 is the partial enlargement structural representation of the first lug, and be wherein provided with indentation in the first fuse area, the first insulating barrier is arranged on the both side surface of the first fuse area and the second bonding pad simultaneously.
Fig. 8 is the structural representation of the first lug when not arranging the first insulating barrier, and wherein the both sides of the first fuse area are provided with rectangle breach;
Fig. 9 is the fusing schematic diagram that nail penetrates the first lug when inside battery makes battery core generation internal short-circuit.
Reference numeral:
1-battery container;
2-battery core;
20-shorting region;
3-top cover;
30-explosion-proof valve;
4-first pole; 4 '-the second pole;
5-first switching piece; 5 '-the second switching piece;
6-first lug; 6 '-the second lug;
60-first bonding pad;
62-first fuse area;
620-insures hole; 622-indentation; 624-breach;
64-second bonding pad;
66-first insulating barrier;
7-plastic rubber bracket;
8-nail.
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows the embodiment meeting the application, and is used from specification one principle explaining the application.
Embodiment
Also by reference to the accompanying drawings the application is described in further detail below by specific embodiment."front", "rear" described in literary composition, "left", "right", " on ", D score all with the laying state of the stacked secondary cell in accompanying drawing for reference.
As depicted in figs. 1 and 2, the embodiment of the present application provides a kind of stacked secondary cell, comprises battery container 1, battery core 2, top cover 3, first pole 4, second pole 4 ' electrically contrary with the first pole, the first lug 6, second lug 6 ' and electrolyte (not shown).Battery core 2 is contained in battery container 1, the diaphragm that battery core has the first mutually stacked pole piece second pole piece electrically contrary with the first pole piece and is arranged between the first pole piece and the second pole piece.Top cover 3 seal group is loaded on battery container 1 top, and the first pole 4 and the second pole 4 ' are all arranged on top cover 3, top cover 3 are also provided with explosion-proof valve 30, to strengthen the explosion-proof capabilities of battery.As shown in Figure 9, the first pole 4 directly can realize electrical connection by the first lug 6 with the first pole piece, and the second pole 4 ' directly can realize electrical connection by the second lug 6 ' with the second pole piece.As depicted in figs. 1 and 2, also electrical connection can be realized by arranging the first switching piece 5 between first pole 4 and the first lug 6, same, electrical connection can be realized by arranging the second switching piece 5 ' between second pole 4 ' and the second lug 6 ', the top of the first switching piece 5 is connected with the bottom of the first pole 4, the top of the second switching piece 5 ' is connected with the bottom of the second pole 4 ', and electrolyte filling is in battery container 1 and infiltrate battery core 2.
In the present embodiment, the material of battery container 1 is stainless steel or aluminium, has good corrosion resistance and enough intensity.Plastic rubber bracket 7 is set between battery container 1 and battery core 2, thus plays the effect of fixing battery core 2.First switching piece 5 and the second switching piece 5 ' are made up of the sheet metal with good conductive thermal conductivity (as aluminium, copper or nickel etc.).First lug 6 and the second lug 6 ' are made up (as aluminium, copper or nickel etc.) of the metal forming with good conductive thermal conductivity, thickness is 5-20 μm, both ensured that the first lug 6 and the second lug 6 ' had certain intensity and weldability, saved material cost again.
As shown in Figure 3, the first lug 6 comprises the first bonding pad 60, first fuse area 62 and the second bonding pad 64 connected successively, also comprises the first insulating barrier 66 being arranged on the first fuse area 62.Wherein, the first bonding pad 60 and the second bonding pad 64 are separately positioned on the two ends of the first fuse area 62, and three arranges along the length direction of lug 6, and the first bonding pad 60 is electrically connected with the first pole, and the second bonding pad 64 is electrically connected with battery core.In the first lug 6, there is in the first fuse area 62 region that an area of passage is less than other region (first bonding pad 60 and the second bonding pad 64) area of passage of the first lug 6.When battery generation internal short-circuit (such as, because drift bolt, Li dendrite are worn out diaphragm thus make the first pole piece and the second pole piece be short-circuited), the material of the first lug 6 is very thin, because its area of passage is minimum during the first fuse area 62, therefore this zone resistance temperature that is maximum, that produce is the highest, when the electric current by the first lug 6 reaches certain value, the first lug 6 can be fused instantaneously at the first fuse area 62 place, thus cutting-off of short-circuit district lug and the electrical connection of non-shorting region lug, play the effect preventing or alleviate internal short-circuit harm.See Fig. 9, Fig. 9 is the fusing schematic diagram that nail 8 penetrates the first lug when inside battery makes battery core generation internal short-circuit, when partial short-circuit formation shorting region 20 occurs in the inside that nail 8 passes battery core 2, the first pole piece in shorting region 20 and the second pole piece are formed by nail 8 and are electrically connected thus produce big current in shorting region 20.Simultaneously, because the first pole piece of shorting region 20 and the first pole piece of non-shorting region are all electrically connected on the first pole 4, and the second pole piece of the second pole piece of shorting region 20 and non-shorting region is all electrically connected on the second pole 4 ', therefore the pole piece of non-shorting region can form path by the first lug 6 and the second lug 6 ' with the pole piece of shorting region, and power to the pole piece of shorting region 20, thus increase the electric current of shorting region further, produce larger potential safety hazard.In the present embodiment, because the first lug 6 has offered the first fuse area 62, first lug 6 of shorting region 20 is by being fused instantaneously at the first fuse area 62 during big current, thus cutting-off of short-circuit district lug and the electrical connection of non-shorting region lug, realize the path between cutting-off of short-circuit district pole piece and non-shorting region pole piece.
But after the first lug 6 be connected with shorting region 20 fuses, the first lug 6 phase that the part of disconnection also may and be connected with non-shorting region overlaps, thus cannot path completely between cutting-off of short-circuit district pole piece and non-shorting region pole piece.In order to prevent the first lug 6 after fusing from contacting with each other again, in the present embodiment, be all provided with the first insulating barrier 66 in the both side surface of each first fuse area 62.After the first fuse area 62 fuses, due to the existence of the first insulating barrier 66, fuse portion still can be under the parcel of the first insulating barrier 66, thus can not be electrically connected with other the first lug 6, thus the first lug 6 of shorting region 20 is insulated completely with the first lug 6 of non-shorting region, avoid non-shorting region pole piece to power to shorting region pole piece, to reduce short-circuit power, reduce internal short-circuit harm, improve the security performance of battery.
Continue produce high temperature for the first lug 6, first fuse area 62 in fusing process, if the first fuse area 62 is too near battery core 2, then likely damage the barrier film of battery core 2.For this reason, be provided with the second bonding pad 64 in the present embodiment especially, first fuse area 62 is connected with battery core 2 by the second bonding pad 64, increases the distance between the first fuse area 62 and battery core 2 like this, thus reduces the damage risk of the first fuse area 62 pairs of separators 66.
The setting area of the first insulating barrier 66 is larger, the probability that the first lug 6 phase be connected with non-shorting region after first fuse area 62 of the first lug 6 be connected with shorting region 20 fuses overlaps is less, therefore can arrange the first insulating barrier 66 in the first bonding pad 60 and the second bonding pad 64 both side surface.But because the first bonding pad 60 needs to be electrically connected with the first pole 4 or with the first switching piece 5, therefore in order to ensure the electrical connection properties of the two, first insulating barrier 66 can not wrap up completely the first setting of bonding pad 60, first insulating barrier 66 in the first bonding pad 60 only otherwise affect the first bonding pad 60 and the first pole 4 or and the first switching piece 5 between electrical connection.In like manner, the setting of the first insulating barrier 66 in the second bonding pad 64 only otherwise affect the electrical connection of the second bonding pad 60 and battery core.There are two kinds of connected modes in the second bonding pad 64 with battery core 2, one is that the first lug 6 and the first pole piece are respectively separate part, now the mode by welding is needed to be connected between the second bonding pad 64 and the first pole piece of battery core 2, in this case in order to prevent, the connection of the first lug 6 and the first lug 6 is counteracted, first insulating barrier 66 can only be arranged on the first weld zone 62, and is not arranged on the second bonding pad 64 (see Fig. 4).Another kind of situation is, first lug 6 is integral type structure with the first pole piece of battery core 2, now, second bonding pad 64 is only connected with battery core 2 by side, therefore the second bonding pad 64 can be arranged (see Fig. 5 to 7) by the first insulating barrier 66 in the lump, and can not affect the electrical connection of the first lug 6 and battery core 2.
Based on this, as shown in Figure 4, the length of the first lug 6 is L, first insulating barrier 66 is L1 near the side (in figure lower limb) of the first lug 6 and the junction of battery core 2 to the distance of this junction, first insulating barrier 66 is L2 away from the side (in figure top edge) of the first lug 6 and the junction of battery core 2 to the distance of this junction, in the present embodiment, length between the top edge of the first insulating barrier and lower limb and setting position can follow following rule: the ratio L1/L of L1 and L is 0 ~ 7/10, and the ratio L2/L of L2 and L is 1/10 ~ 8/10.If exceed this scope, then likely cause that the setting area of the first insulating barrier 66 is too small or setting position is improper, affect the connection between the first lug 6 and other parts.Under the prerequisite meeting above-mentioned condition, the setting area of the first insulating barrier 66 can expand as far as possible, so that the probability that the first lug 6 phase that the first fuse area 62 reducing the first lug 6 be connected with shorting region 20 is connected with non-shorting region after fusing overlaps.
In order to play good insulation effect, the first insulating barrier 66 can adopt the ceramic materials such as aluminium oxide, or adopts the organic material such as epoxy resin, butyl polyacrylate, certainly can select composite material or other there is the material of insulation property.According to the difference of material therefor and battery size, the thickness of the first insulating barrier 66 can be selected within the scope of 1 ~ 50 μm.
The mode reducing area of passage in the first fuse area 62 has a variety of, such as one or more insurance hole 620 is set in the first fuse area 62, because electric current cannot through insurance hole 620, be merely able to be passed through by the both sides in insurance hole 620, therefore be actually and decrease width when the thickness of flow-passing surface is constant, and then reduce area of passage.The shape in insurance hole 620 can be selected as required, such as, be set to circle (see Fig. 4), Long Circle (see Fig. 5) or rectangle (see Fig. 6) etc.In order to ensure the normal power supply of battery, possess higher overcurrent protection sensitivity, the area in insurance hole 620 can not arbitrarily be arranged, and the area that generally will insure hole 620 accounts for 10 ~ 90% of first fuse area 62 gross area simultaneously.The area of passage that the area in insurance hole 620 more hour to produce is larger; the temperature produced during short circuit is lower; and the difficulty of fusing is also larger; the sensitivity decrease of overcurrent protection can be made; if the area insuring hole 620 is excessive, the structural strength of the first lug 6 can be reduced; also can improve heating temp, under extreme case, the first lug 6 also may be fused in normal use simultaneously.
In addition, as shown in Figure 7, also can arrange one or more snippets indentation 622 on the first fuse area 62 in the present embodiment, this mode is in fact a part of thickness reducing flow-passing surface, and then reduces area of passage.The length of indentation, width, the degree of depth and quantity, interval etc. all can adjust as required.
Except above two kinds of modes, as shown in Figure 8, in the present embodiment, the first fuse area 62 can also be narrowed by the mode arranging one or more breach 624 at the sidepiece of the first fuse area 62, thus reduce area of passage.Breach 624 can only be offered in the side of the first fuse area 62, also can offer in both sides simultaneously.The shape of breach 624 can select rectangle, semicircle, half elliptic or other be easy to the shape that makes.Same, breach 624 quantity, size and distributing position etc. also can not adjusting according to the first lug 6 material therefor and battery size on an equal basis.
Certainly, the present embodiment also can by improving the second lug 6 ', it is made to copy the structures such as the first fuse area 62, second bonding pad 64, bonding pad 60, first of the first lug 6, form the 3rd bonding pad, the second fuse area, the 4th bonding pad, and the structures such as insurance hole, indentation, breach are set in the second fuse area, and setting, as structures such as the second insulating barriers of the first insulating barrier 66, makes the effect that the second lug 6 ' can reach identical with the first lug 6 on the second fuse area and the 4th bonding pad.
Generally speaking, only need to select a wherein pole lug to carry out transformation and can realize circuit fusing function, the first lug 6 and the second lug 6 ' can certainly be transformed simultaneously simultaneously, better effect can be possessed.Wherein, the parameter such as shape, structure, size of the first lug 6 and the second lug 6 ' can be identical, also can be different, and those skilled in the art all can adjust according to the actual requirements.First lug 6 such as, arranged circular insurance hole 620, and the second lug 6 ' is arranged rectangle breach etc., do not repeat them here.
The present embodiment can not only be sensitiveer protection battery avoid the thermal runaway that external short circuit causes; and when inside battery generation various forms partial short-circuit; first fuse area 62 of the first lug 6 and the coupling of the first insulating barrier 66 can cut off non-shorting region completely and power to shorting region; reduce short-circuit power; delay to reduce internal short-circuit harm, improve the security performance of battery.In addition, the present embodiment structure is simple, is easy to realize, can be applicable to suitability for industrialized production.
According in the secondary cell of the application, secondary cell can be lithium rechargeable battery, sodium ion secondary battery or zinc ion secondary cell.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in the application.
Claims (9)
1. a stacked secondary cell, comprises battery core, the diaphragm that described battery core has the first mutually stacked pole piece second pole piece electrically contrary with described first pole piece and is arranged between described first pole piece and described second pole piece; Described stacked secondary cell also comprises the first pole, second pole electrically contrary with described first pole, multiple first lug and multiple second lug, described first pole realizes being electrically connected with described battery core by multiple described first lug, described second pole realizes being electrically connected with described battery core by multiple described second lug, it is characterized in that
Each described first lug all arranges the first fuse area, at least arranges the first insulating barrier in the first fuse area both side surface in each described first lug,
And/or
Each described second lug all arranges the second fuse area, at least arranges the second insulating barrier in the second fuse area both side surface in each described second lug.
2. stacked secondary cell according to claim 1, is characterized in that, is provided with one or more insurance hole in described first fuse area and/or described second fuse area.
3. stacked secondary cell according to claim 2, is characterized in that, the area in described insurance hole accounts for 10 ~ 90% of described first fuse area or the described second fuse area gross area.
4. stacked secondary cell according to claim 1, is characterized in that, the sidepiece of described first fuse area and/or described second fuse area is provided with one or more breach.
5. stacked secondary cell according to claim 1, is characterized in that, is provided with one or more snippets indentation in described first fuse area and/or described second fuse area.
6. stacked secondary cell according to claim 1, is characterized in that,
Described first lug also comprises the first bonding pad and the second bonding pad, and described first fuse area is electrically connected with described first pole by described first bonding pad, and described first fuse area is electrically connected with described battery core by described second bonding pad,
And/or
Described second lug also comprises the 3rd bonding pad and the 4th bonding pad, and described second fuse area is electrically connected with described second pole by described 3rd bonding pad, and described second fuse area is electrically connected with described battery core by described 4th bonding pad.
7. the stacked secondary cell according to any one of claim 1 to 6, is characterized in that,
Described first insulating barrier accounts for 0 ~ 7/10 of the total length of described first lug near the side of the junction of described first lug and described battery core to the distance of this junction, described first insulating barrier accounts for 1/10 ~ 8/10 of the total length of described first lug away from the side of the junction of described first lug and described battery core to the distance of this junction
And/or
Described second insulating barrier accounts for 0 ~ 7/10 of the total length of described second lug near the side of the junction of described second lug and described battery core to the distance of this junction, and described second insulating barrier accounts for 1/10 ~ 8/10 of the total length of described second lug away from the side of the junction of described second lug and described battery core to the distance of this junction.
8. the stacked secondary cell according to any one of claim 1 to 6, is characterized in that, the thickness of described first insulating barrier and/or described second insulating barrier is 1 ~ 50 μm.
9. stacked secondary cell according to claim 1, is characterized in that, described first insulating barrier and/or described second insulating barrier are ceramic material or organic material.
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|---|---|---|---|
| CN201520746565.4U CN204927440U (en) | 2015-09-24 | 2015-09-24 | Lamination formula secondary cell |
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|---|---|---|---|
| CN201520746565.4U CN204927440U (en) | 2015-09-24 | 2015-09-24 | Lamination formula secondary cell |
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| CN107978731A (en) * | 2017-12-28 | 2018-05-01 | 厦门紫阳科技产业发展有限公司 | A kind of battery pole ear based on graphite ene coatings and preparation method thereof |
| CN108023055A (en) * | 2016-11-01 | 2018-05-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| EP3331052A1 (en) * | 2016-12-02 | 2018-06-06 | Contemporary Amperex Technology Co., Limited | Secondary battery |
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| CN114552135A (en) * | 2022-02-28 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Novel tab protection structure for secondary battery, tab forming method and battery cell |
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| US11557816B2 (en) | 2016-12-02 | 2023-01-17 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| EP3331052A1 (en) * | 2016-12-02 | 2018-06-06 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10916756B2 (en) | 2016-12-02 | 2021-02-09 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| CN112886154A (en) * | 2016-12-02 | 2021-06-01 | 宁德时代新能源科技股份有限公司 | Secondary battery and assembly for secondary battery |
| CN112886154B (en) * | 2016-12-02 | 2023-08-11 | 宁德时代新能源科技股份有限公司 | Secondary battery and assembly for secondary battery |
| CN107978731A (en) * | 2017-12-28 | 2018-05-01 | 厦门紫阳科技产业发展有限公司 | A kind of battery pole ear based on graphite ene coatings and preparation method thereof |
| CN108428852A (en) * | 2018-01-12 | 2018-08-21 | 宁德时代新能源科技股份有限公司 | Secondary battery and automobile |
| CN108428852B (en) * | 2018-01-12 | 2024-02-09 | 宁德时代新能源科技股份有限公司 | Secondary battery and automobile |
| WO2019141129A1 (en) * | 2018-01-18 | 2019-07-25 | 比亚迪股份有限公司 | Battery, battery pack and automobile |
| US11605858B2 (en) | 2018-01-18 | 2023-03-14 | Byd Company Limited | Battery, battery pack, and vehicle |
| US11387528B2 (en) | 2018-01-29 | 2022-07-12 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN110098368A (en) * | 2018-01-29 | 2019-08-06 | 三星Sdi株式会社 | Secondary cell |
| CN113451714A (en) * | 2021-06-24 | 2021-09-28 | 广州小鹏汽车科技有限公司 | Fusing structure for battery core and battery module |
| CN114156521A (en) * | 2021-12-02 | 2022-03-08 | 芜湖天弋能源科技有限公司 | Battery processing technology |
| CN114552135A (en) * | 2022-02-28 | 2022-05-27 | 上海兰钧新能源科技有限公司 | Novel tab protection structure for secondary battery, tab forming method and battery cell |
| WO2024077652A1 (en) * | 2022-10-11 | 2024-04-18 | 湖北亿纬动力有限公司 | Cell pack and power battery |
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