CN209447912U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
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- CN209447912U CN209447912U CN201920314329.3U CN201920314329U CN209447912U CN 209447912 U CN209447912 U CN 209447912U CN 201920314329 U CN201920314329 U CN 201920314329U CN 209447912 U CN209447912 U CN 209447912U
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- Prior art keywords
- groove
- end daughter
- secondary cell
- daughter board
- board
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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
Abstract
The utility model relates to energy storage device fields, provide a kind of secondary cell, comprising: shell has opening and accommodating cavity；Electrode assembly is placed in accommodating cavity, including the first pole piece, the second pole piece and diaphragm, diaphragm are set between the first pole piece and the second pole piece；Cover plate assembly, including cover board and first end daughter board, cover board covering are open and have electrode fairlead, and first end daughter board is located at the side of the separate shell of cover board and covering electrode fairlead；The side far from the cover board of the first end daughter board has groove；Switching piece is set between the cover board and the electrode assembly and has first connecting portion and second connecting portion, and the first connecting portion is connect with first pole piece, and the second connecting portion is protruded into the electrode fairlead and connect with the first end daughter board；And containment member, it is arranged in the groove.Groove is arranged in the technical program on terminal board, and containment member is arranged in groove, and containment member can prevent electrode terminal and switching piece from welding the electrolyte extravasation risk caused when battery air tightness being caused to fail, improves the safety of secondary cell.
Description
Technical field
The utility model relates to energy storage device fields, more particularly to a kind of secondary cell.
Background technique
In the secondary battery, the intracorporal electrode assembly of shell is usually to pass through switching piece to connect with the electrode terminal on top cover.
In existing secondary cell manufacturing process, electrode assembly is first welded with switching piece, and then switching piece and electrode terminal are by swashing
Photocoagulation is attached, and finally electrode assembly is packed into shell again.However when electrode terminal and switching piece weld, it may go out
Existing air-tightness failure, and then cause cell safety problem.
Utility model content
For this reason, it may be necessary to provide a kind of secondary cell, the electrode terminal and switching piece for solving above-mentioned secondary cell are welded
When, in fact it could happen that air-tightness failure, and then the technical issues of initiation cell safety.
To achieve the above object, the utility model provides a kind of secondary cell, comprising:
Shell has opening and accommodating cavity；
Electrode assembly is placed in the accommodating cavity, including the first pole piece, the second pole piece and diaphragm, the diaphragm setting
Between first pole piece and second pole piece；
Cover plate assembly, including cover board and first end daughter board, the cover board covering is described to be open and has electrode fairlead, institute
State the side far from the shell and the covering electrode fairlead that first end daughter board is located at the cover board；The first terminal
The side far from the cover board of plate has groove；
Switching piece is set between the cover board and the electrode assembly and has first connecting portion and second connecting portion,
The first connecting portion is connect with first pole piece, and the second connecting portion protrudes into the electrode fairlead and with described the
The welding of one terminal board；And
Containment member is arranged in the groove.
Further, the containment member is metal seal component, the edge of the metal seal component and the groove
It is formed and is tightly connected by welding.
Further, the inner sidewall of the groove includes annular slope, and the annular slope is located at the top of the inner sidewall
It portion and is tilted to the middle part of the groove, the lateral wall of the metal seal component is parallel to each other with the annular slope.
Further, the metal seal component is provided with stress relief grooves, and the stress relief grooves are close along the metal
Seal the edge setting of component and distribution annular in shape.
Further, the second connecting portion and the first end daughter board weld the bottom that the weldering print to be formed is located at the groove
Portion.
Further, the containment member is sealant, and the sealant covers the weldering print.
Further, surface far from the cover board of the sealant lower than the first end daughter board.
Further, the bottom of the groove is provided with recessed portion.
Further, the bottom of the groove is provided with through-hole, and the through-hole runs through the first end daughter board.
Further, the material of the first end daughter board includes aluminum or aluminum alloy.
It is different from the prior art, groove is arranged on the first end daughter board of secondary cell in above-mentioned technical proposal, and recessed
Containment member is provided in slot, containment member can prevent electrode terminal and switching piece from welding initiation when battery air tightness being caused to fail
Electrolyte exosmose risk, improve the safety of secondary cell.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of secondary cell described in specific embodiment；
Fig. 2 is the explosive view of secondary cell described in specific embodiment；
Fig. 3 is the sectional view of battery component described in specific embodiment；
Fig. 4 is the explosive view of cover plate assembly described in specific embodiment；
Fig. 5 be specific embodiment described in secondary cell along Fig. 1 A-A to sectional view；
Fig. 6 is the partial enlarged view of part A in Fig. 5；
Fig. 7 a is the structural schematic diagram of containment member and groove described in specific embodiment；
Fig. 7 b is the structural schematic diagram of first end daughter board described in another specific embodiment；
Fig. 8 be specific embodiment described in secondary cell along Fig. 1 A-A to sectional view；
Fig. 9 is the partial enlarged view of part B in Fig. 8；
Description of symbols:
100, shell；
110, it is open；
120, accommodating cavity；
200, electrode assembly；
210, the first tab；
220, the second tab；
230, the first pole piece；
240, the second pole piece；
250, diaphragm；
300, cover plate assembly；
310, first end daughter board；
311, groove；
3111, annular slope；
312, recessed portion；
313, through-hole；
314, weldering print；
320, second end daughter board；
330, cover board；
331, seal groove；
332, electrode fairlead；
340, sealing ring；
400, switching piece；
410, the first switching piece；
411, first connecting portion；
412, second connecting portion；
420, the second switching piece；
421, first connecting portion；
422, second connecting portion；
500, containment member；
510, locating slot；
520, stress relief grooves；
530, lateral wall；
600, explosion-proof valve；
700, liquid injection hole；
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
It should be noted that in the description of the present application unless specifically defined or limited otherwise, term " first ", " the
Two ", it is only used for the purpose of description, is not understood to indicate or imply relative importance；Unless otherwise prescribed or illustrate, term
" multiple " refer to two or more；Term " connection ", " fixation " etc. shall be understood in a broad sense, for example, " connection " can be fixed company
It connects, may be a detachable connection, or be integrally connected, or electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.
In the description of this specification, it is to be understood that "upper", "lower" described in the embodiment of the present application, "left", "right"
The equal nouns of locality are described with angle shown in the drawings, should not be construed as the restriction to the embodiment of the present application.In addition,
In context, it is also necessary to which understanding can not only when mentioning an element and being connected to another element "upper" or "lower"
It is enough connected directly between another element "upper" or "lower", another element "upper" can also be indirectly coupled to by intermediary element
Or "lower".
Fig. 1 to Fig. 9 is please referred to, this application provides a kind of secondary cells.It as depicted in figs. 1 and 2, is specific embodiment
The structural schematic diagram of secondary cell, Fig. 2 are the explosive view of specific embodiment secondary cell.Secondary cell includes shell 100, electrode
Component 200, cover plate assembly 300, switching piece 400 and containment member 500.
Shell 100 can be made of metal materials such as aluminium, aluminium alloy or nickel-plated steels, and shell 100 can be rectangular box-shaped structure
Or column structure, shell 100 have opening 110 and accommodating cavity 120.Electrode assembly 200 is contained in the accommodating cavity 120 of shell 100
It is interior.
As shown in figure 3, being the sectional view of electrode assembly 200.Electrode assembly 200 includes the first pole piece 230, the second pole piece
240 and the diaphragm 250 that is set between first pole piece 230 and second pole piece 240.Wherein, the first pole piece 230 can
Think that positive plate, the second pole piece 240 are negative electrode tab, diaphragm 250 is made of insulation film.In other examples, the first pole
Piece 230 can also be negative electrode tab, and second electrode is positive plate.Wherein, diaphragm 250 is between the first pole piece 230 and the second pole
Insulator between piece 240.The active material of positive plate can be applied on the coating area of positive plate, the active material of negative electrode tab
It can be applied on the coating area of negative electrode tab.First tab 210 is then used as by the part that the coating area of the first pole piece 230 is extended
That is positive pole ear；Second tab 220 i.e. negative lug is then used as by the part that the coating area of the second pole piece 240 is extended.First
Tab 210 (i.e. positive pole ear) is connected to 310 (the i.e. anode of first end daughter board on cover plate assembly 300 by the first switching piece 410
Daughter board), the second tab 220 (i.e. negative lug) is connected to the second end daughter board on cover plate assembly 300 by the second switching piece 420
320 (i.e. negative terminal daughter boards).
In the embodiment shown in fig. 3, electrode assembly 200 be takeup type structure, i.e. the first pole piece 230, diaphragm 250 and
Second pole piece 240 is banded structure, and the first pole piece 230, diaphragm 250 and the second pole piece 240 are stacked gradually and wound
Two circle electrode assemblies 200 formed above.In other embodiments, electrode assembly 200 or stacked electrode assembly, i.e.,
There is the second pole piece of the first pole piece of multi-disc and multi-disc in electrode assembly, diaphragm is arranged between the first pole piece and the second pole piece,
First pole piece, diaphragm, the second pole piece are cascading.
As shown in Fig. 2, there are two electrode assembly 200, thickness of two electrode assemblies 200 along shell 100 for setting in shell 100
Direction is spent to stack.Certainly, in other embodiments, an electrode assembly 200 has been may also set up in shell 100, or in shell
There are three above electrode assemblies 200 for setting in body 100.Multiple electrodes component 200 is stacked along the thickness direction of shell 100.
As illustrated in fig. 1 and 2, cover plate assembly 300 is set to the opening of shell 100, forms closed be used for shell 100
The accommodating cavity 120 of electrode assembly 200 is accommodated, is provided with explosion-proof valve 600 and liquid injection hole 700 on cover plate assembly 300.
As shown in figure 4, being the explosive view (including switching piece 400) of specific embodiment cover plate assembly 300.Cover plate assembly
300 include cover board 330 and the first end daughter board 310 and second end daughter board 320 that are set on cover board 330.Cover board 330 can be by
The metal materials such as aluminium, aluminium alloy are made, and the size of the opening 110 of the size and shell 100 of cover board 330 is adapted, can
It seals and cooperates with opening 110.Seal groove 331 and electrode fairlead 332 are provided on cover board 330.Wherein, seal groove 331 by
The surface of the separate electrode assembly 200 of cover board 330 is recessed inwardly to be formed, and may be provided with sealing ring 340 in seal groove 331, sealing
The lower part of circle 340 is connect with seal groove 331, and the top of sealing ring 340 is connect with the bottom of first end daughter board 310, to play
Sealing function prevents the electrolyte in shell 100 from exosmosing.First end daughter board 310 and second end daughter board 320 can pass through welding, riveting
The fixing pieces such as nail or plastic cement are fixed on cover board 330.Electrode fairlead 332 is located at the middle part of seal groove 331, therefore works as first end
When daughter board 310 or second end daughter board 320 are installed on cover board 330, electrode fairlead 332 is by first end daughter board 310 or Second terminal
Plate 320 is covered.
Switching piece 400 is provided between cover plate assembly 300 and electrode assembly 200, switching piece 400 includes the first switching piece
410 and second switching piece 420, wherein the first tab 210 of electrode assembly 200 by the first switching piece 410 on cover board 330
First end daughter board 310 be electrically connected, the second tab 220 passes through the second switching piece 420 and the second end daughter board 320 on cover board 330
Electrical connection.Wherein, as shown in figure 4, the first switching piece 410 includes first connecting portion 411 and second connecting portion 412, the second switching
Piece 420 includes first connecting portion 421 and second connecting portion 422, and first connecting portion 411 can be plate-like structure, the second connection
Portion 412 can be to be set in first connecting portion 411 and to the protrusion of the protrusion of first end daughter board 310.First adapter 410
For first connecting portion 411 for connecting with the first pole piece 230 of electrode assembly 200, second connecting portion 412 protrudes into electrode fairlead
It is connect in 332 and with first end daughter board 310.The structure of second switching piece 420 is identical as the structure of the first switching piece 410, equally
, the first connecting portion 421 of the second switching piece 420 is connect with the second pole piece 240 of electrode assembly 200, the second switching piece 420
It connect, therefore passes through in another electrode fairlead 332 that second connecting portion 422 protrudes on cover board 330 and with second end daughter board 320
Switching piece 400 can realize being electrically connected between first end daughter board 310, second end daughter board 320 and electrode assembly 200.
As shown in Fig. 5, Fig. 6 and Fig. 7 a, Fig. 5 be specific embodiment secondary cell along Fig. 1 A-A to sectional view；
Fig. 6 is the partial enlarged view of part A in Fig. 5；Fig. 7 a is the structural representation of specific embodiment containment member 500 and groove 311
Figure.First end daughter board 310 is positive terminal board, and second end daughter board 320 is negative terminal board, as shown in Fig. 6 and Fig. 7 a, first end daughter board
310 can be made of aluminum or aluminum alloy.
As shown in Figure 2 and Figure 4, for the ease of the weldering of the second connecting portion 412 of first end daughter board 310 and the first switching piece 410
It connects, the second connecting portion 422 of second end daughter board 320 and the second switching piece 420 is welded, and is provided in the middle part of first end daughter board 310
Groove 311 reduces bonding power, bonding power reduction can to reduce welding surface on terminal board at a distance from switching piece 400
Terminal board is reduced by the probability of burn-through, to improve the leakproofness of secondary cell.
As shown in Figure 5 and Figure 6, groove 311 is set to the surface of the separate cover board 330 of first end daughter board 310, groove 311
For blind hole, the surface from first end daughter board 310 far from cover board 330 is recessed to 330 direction of cover board, but does not run through first end daughter board
310.Likewise, being also provided with groove at the middle part of second end daughter board 320.
As shown in fig. 6, being 310 upper groove of first end daughter board when first end daughter board 310 and the first switching piece 410 weld
311 positions weld together with the first switching piece 410, and form weld seam, and weldering print 314 is located at the bottom of groove, ascend the throne
In on the surface in 310 groove of first end daughter board.When welding, first electrode assembly 200 and switching piece 400 can be welded, then again
Electrode assembly 200 will be entered into shell 100 and cover plate assembly 300 is assemblied in the opening of shell 100 110, finally again from secondary cell
Outside first end daughter board 310 and second end daughter board 320 are welded with switching piece 400, so as to avoid metal broken
The inside that bits enter secondary cell shell 100 causes electrode assembly 200 short-circuit, improves battery safety.In addition, weldering print 314
Positioned at the bottom of groove, surface or smooth, when will not influence group die-filling group busbar connector of the first end daughter board 310 in addition to groove
Welding.
As shown in Figure 8 and Figure 9, containment member 500 is set to the groove 311 and second end daughter board of first end daughter board 310
In 320 groove.Containment member 500 is set in the groove 311 of first end daughter board 310, and the close of first end daughter board 310 can be improved
Feng Xing avoids first end daughter board 310 by the electrolyte of secondary cell when burn-through from groove 311 to extravasation；Meanwhile prevented also from weldering
Cause steam to enter enclosure interior after connecing failure, declines battery life.Likewise, the containment member on second end daughter board 320
500 also can be improved the leakproofness of second end daughter board 320, to improve the quality of secondary cell.
Containment member 500 can also be by being made, and in order to improve with the metal material of 310 same material of first end daughter board
Metal seal component 500 and 311 connection sealing of groove, the edge and groove 311 of metal seal component 500 can be by welding shape
At sealed connection.In embodiment as shown in Figure 7a, in order to improve the welding of metal seal component 500 Yu first end daughter board 310
Precision, the middle part of metal seal component 500 are provided with locating slot 510.Locating slot 510 by metal seal component 500 upper surface
Recess is formed downwards, and positioning is used when locating slot 510 can be used for metal seal component 500 and the welding of first end daughter board 310.Further
, stress relief grooves 520 are also provided at the edge of metal seal component 500.When metal seal component 500 and stress relief grooves
520 with first end daughter board 310 when welding, and the stress near the releasable weld seam of stress relief grooves 520 prevents metal seal component
500 crack and make seal failure.
As shown in Fig. 4, Fig. 6 and Fig. 7 a, groove 311 is circular groove, and the inner sidewall of circular groove includes annular slope
3111.Wherein, annular slope 3111 is located at the top of the medial surface of groove, the i.e. opening of circular groove, and annular slope
3111 tilt to the middle part of groove 311, i.e., from the opening of groove 311 to bottom direction, the diameter in 3111 section of annular slope by
Gradual change is small.And the lateral wall 530 of containment member 500 and the inner sidewall annular slope 3111 of groove 311 are parallel to each other.In the reality
It applies in mode, annular slope 3111 will be arranged at the top of the inner sidewall of groove 311, connect convenient for containment member 500 and groove 311
It connects, and influence of the processing dimension error of containment member 500 to connection sealing can be reduced, containment member 500 is effectively ensured
With the connection sealing between groove 311.
As shown in fig. 6, being set to the opening of groove 311 in containment member 500, and the thickness of containment member 500 is small
In the depth of groove 311, to make that there is cavity between containment member 500 and the bottom of groove 311.In this embodiment,
The thickness of containment member 500 is less than the depth of groove 311, can reduce the volume and quality of containment member 500, and then improve secondary
The energy density of battery；Meanwhile the welding exhaust gas that the cavity generates when can also store welded seal component 500, to prevent void
Weldering causes seal failure.
As shown in Figure 7a, it is also provided with recessed portion 312 in the bottom of groove 311, recessed portion 312 is blind hole, recessed portion 312
The center of 311 bottom of groove can be located at, and be recessed from the bottom of groove 311 to electric 200 direction of level assembly and formed.First end
Daughter board 310 and containment member 500 can generate exhaust gas when welding, the recessed portion 312 of 311 bottom of groove can increase storage welding exhaust gas
Space, to prevent rosin joint from causing seal failure.
As shown in Figure 7b, in another embodiment, the bottom of groove 311 is provided with through-hole 313.Specifically, through-hole 313
The bottom of groove 311 on first end daughter board 310, and through-hole 313 runs through first end daughter board 310, and through-hole 313 can be used for
The gas generated when discharge welding first end daughter board 310 and second connecting portion 412 prevents welding exhaust gas from entering and causes void in molten bath
Weldering；Secondly through-hole 313 can also be used in the fit-up gap for detecting first end daughter board 310 and second connecting portion 412, improve welding essence
Degree, prevents weld failure.
As shown in Figure 8 and Figure 9, Fig. 8 be specific embodiment described in secondary cell along Fig. 1 A-A to sectional view；Fig. 9
For the partial enlarged view of part B in Fig. 8.Wherein, containment member 500 is sealant, and sealant is filled in first end daughter board 310
In groove 311, and sealant will at least cover the bottom of groove 311, specifically, sealant at least to cover groove 311 with
The weldering print 314 of first switching piece 410.Likewise, containment member 500 or sealing in the groove of second end daughter board 320
Glue.Sealant, which can be selected, has good combination intensity, and the sealant with good heat resistance and mobility, example with metal material
Such as hot melt adhesive, light-sensitive emulsion.When infusing sealant in groove 311, it should ensure that sealant can either cover weldering print 314, simultaneously
It cannot be overflowed again from groove 311.Therefore the bottom that groove 311 can be covered by sealant, by first end daughter board 310 and first turn
314 covering of weldering print of contact pin 410, prevents electrolyte leakage caused by failing at weldering print 314, to improve the matter of secondary cell
Amount.
Further, as shown in figure 9, in the present embodiment, the top of sealant is separate lower than first end daughter board 310
The surface of shell 100, the i.e. top of sealant are lower than the opening of groove 311.The dosage of sealant can be reduced in this way.
Claims (10)
1. a kind of secondary cell characterized by comprising
Shell has opening and accommodating cavity；
Electrode assembly is placed in the accommodating cavity, including the first pole piece, the second pole piece and diaphragm, the diaphragm are set to institute
It states between the first pole piece and second pole piece；
Cover plate assembly, including cover board and first end daughter board, the cover board covering opening and have electrode fairlead, and described the
One terminal board is located at the side far from the shell of the cover board and the covering electrode fairlead；The first end daughter board
Side far from the cover board has groove；
Switching piece is set between the cover board and the electrode assembly and has first connecting portion and second connecting portion, described
First connecting portion is connect with first pole piece, the second connecting portion protrude into the electrode fairlead and with the first end
Daughter board welding；And
Containment member is arranged in the groove.
2. secondary cell according to claim 1, which is characterized in that the containment member is metal seal component, described
The edge of metal seal component and the groove are formed by welding to be tightly connected.
3. secondary cell according to claim 2, which is characterized in that the inner sidewall of the groove includes annular slope, institute
Annular slope is stated to be located at the top of the inner sidewall and tilt to the middle part of the groove, the lateral wall of the metal seal component
It is parallel to each other with the annular slope.
4. secondary cell according to claim 2, which is characterized in that the metal seal component is provided with stress release
Slot, the stress relief grooves are along the setting of the edge of the metal seal component and distribution annular in shape.
5. secondary cell according to claim 1, which is characterized in that the second connecting portion and the first end daughter board weld
Connect the bottom that the weldering print to be formed is located at the groove.
6. secondary cell according to claim 5, which is characterized in that the containment member is sealant, the sealant
Cover the weldering print.
7. secondary cell according to claim 6, which is characterized in that the sealant is remote lower than the first end daughter board
Surface from the cover board.
8. secondary cell according to claim 1, which is characterized in that the bottom of the groove is provided with recessed portion.
9. secondary cell according to claim 1, which is characterized in that the bottom of the groove is provided with through-hole, described logical
The first end daughter board is run through in hole.
10. secondary cell according to claim 1, which is characterized in that the material of the first end daughter board includes aluminium or aluminium
Alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314329.3U CN209447912U (en) | 2019-03-13 | 2019-03-13 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314329.3U CN209447912U (en) | 2019-03-13 | 2019-03-13 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209447912U true CN209447912U (en) | 2019-09-27 |
Family
ID=68033768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920314329.3U Active CN209447912U (en) | 2019-03-13 | 2019-03-13 | Secondary cell |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767848A (en) * | 2019-11-21 | 2020-02-07 | 四川新敏雅电池科技有限公司 | Battery cover plate assembly and battery cell |
| CN113314760A (en) * | 2021-05-31 | 2021-08-27 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and battery cell |
| EP3926741A4 (en) * | 2020-04-17 | 2021-12-22 | Contemporary Amperex Technology Co., Limited | End cap assembly, battery cell, battery module, and apparatus |
| CN114883757A (en) * | 2022-05-31 | 2022-08-09 | 远景动力技术(江苏)有限公司 | Cylindrical battery and electronic equipment |
| CN114927833A (en) * | 2022-06-30 | 2022-08-19 | 远景动力技术(江苏)有限公司 | Cylindrical battery assembly method, cylindrical battery and electronic equipment |
| WO2023025108A1 (en) * | 2021-08-23 | 2023-03-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
| US11715867B2 (en) | 2020-04-17 | 2023-08-01 | Contemporary Amperex Technology Co., Limited | End cover assembly, battery cell, battery module and device |
-
2019
- 2019-03-13 CN CN201920314329.3U patent/CN209447912U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767848A (en) * | 2019-11-21 | 2020-02-07 | 四川新敏雅电池科技有限公司 | Battery cover plate assembly and battery cell |
| EP3926741A4 (en) * | 2020-04-17 | 2021-12-22 | Contemporary Amperex Technology Co., Limited | End cap assembly, battery cell, battery module, and apparatus |
| US11715867B2 (en) | 2020-04-17 | 2023-08-01 | Contemporary Amperex Technology Co., Limited | End cover assembly, battery cell, battery module and device |
| CN113314760A (en) * | 2021-05-31 | 2021-08-27 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and battery cell |
| CN113314760B (en) * | 2021-05-31 | 2022-05-27 | 蜂巢能源科技有限公司 | Battery cell manufacturing method and battery cell |
| WO2023025108A1 (en) * | 2021-08-23 | 2023-03-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
| CN114883757A (en) * | 2022-05-31 | 2022-08-09 | 远景动力技术(江苏)有限公司 | Cylindrical battery and electronic equipment |
| CN114927833A (en) * | 2022-06-30 | 2022-08-19 | 远景动力技术(江苏)有限公司 | Cylindrical battery assembly method, cylindrical battery and electronic equipment |
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