CN114744373A - Battery manufacturing method - Google Patents
Battery manufacturing method Download PDFInfo
- Publication number
- CN114744373A CN114744373A CN202210556038.1A CN202210556038A CN114744373A CN 114744373 A CN114744373 A CN 114744373A CN 202210556038 A CN202210556038 A CN 202210556038A CN 114744373 A CN114744373 A CN 114744373A
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- pole ear
- tab
- battery manufacturing
- window
- blade
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000005452 bending Methods 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention belongs to the technical field of battery manufacturing, and discloses a battery manufacturing method which comprises a positioning step and a connecting step. In the positioning step, the fixing tool and the main structure of the current collecting component are fixedly assembled; in the connecting step, the pole ear part is led out from one end of the electrode assembly in the length direction, and the pole ear part penetrates through a window formed in the main structure and then is connected with the blade on the window. In the battery manufacturing method, the pole ear part of the electrode assembly penetrates out of the window on the main body structure and is connected with the blade, compared with the traditional pole ear part which is connected with the wing structures at two sides after winding the width direction of the main body structure, the pole ear part directly penetrates through the window and is connected with the blade and is not connected with the blade again around the width direction of the main body structure, the total size of the pole ear part and the main body structure in the width direction is reduced, the energy density of the battery is favorably improved, the length of the pole ear part can be reduced, and the use of pole ear materials is favorably reduced.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a battery manufacturing method.
Background
At present, in the existing battery manufacturing method, after the tab portion and the wing structures on both sides of the main structure of the current collecting member are connected, they are turned outwards together in a direction away from the electrode assembly, and the tab portion and the wing structures are turned outwards, so that the occupied space after bending is large, and the overall size is increased.
Disclosure of Invention
The invention aims to provide a battery manufacturing method to solve the problem that the eversion and bending of the tab part and wing structure occupies large space.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery manufacturing method comprising:
positioning, namely fixedly assembling the fixing tool and the main structure of the current collecting component;
and a connecting step, leading out a pole lug part from one end of the electrode assembly in the length direction, wherein the pole lug part penetrates through a window formed in the main body structure and then is connected with the blade on the window.
Optionally, after the connecting step, a bending step is further included, and the bending step includes bending the blade and the pole ear part toward a direction close to the window.
Optionally, in the positioning step, a fixing structure is arranged at one end of the main body structure assembled with the fixing tool, and the fixing tool is assembled with the fixing structure in an inserting manner. The fixing tool and the fixing structure are inserted, assembled and positioned to fix the main body structure, so that when the blade is turned over subsequently, the main body structure is prevented from being slightly deflected due to the influence of torque, and the product quality is prevented from being influenced.
Optionally, the fixing structure includes a bending portion, a groove structure is formed in the fixing tool, and the bending portion is inserted and fixed with the groove structure. The fixed tool is connected with the main body structure through the bending part and the groove structure in a quick positioning mode, and assembling efficiency is improved.
Optionally, in the connecting step, two sets of the electrode assemblies and two sets of the windows are respectively arranged correspondingly, and the two sets of the windows are arranged at intervals along the width direction of the main body structure; the electrode lug parts in the same direction of the two groups of electrode assemblies correspondingly penetrate through the two groups of windows and are correspondingly connected with the blades on the two groups of windows. The lug parts at the ends of the two groups of electrode assemblies in the same direction share one adapter for concentrated output, so that the number of the adapters is reduced, and the battery density is further improved.
Optionally, in the connecting step, the tab portion includes a first tab piece and a second tab piece that are disposed at an interval, each group of the windows is rotatably connected with two of the blades, and the first tab piece and the second tab piece are connected with two of the blades in a one-to-one correspondence manner. Two formula utmost point ears are traditional a slice utmost point ear relatively, and it is more convenient to buckle, has promoted utmost point ear quality of buckling, when making things convenient for utmost point ear to buckle, does benefit to the consumption that reduces utmost point ear material, saves the cost.
Optionally, in the positioning step, one end of the current collecting member is provided with a lead-out structure, and the lead-out structure is connected with the cover plate assembly.
Optionally, in the bending step, the method further includes withdrawing the fixing tool after the blades and the tab portions are bent.
Optionally, in the step of attaching, the tab portion and the blade are attached by an ultrasonic welding process. The ultrasonic welding has high welding speed and high machining precision, and is favorable for improving the welding quality.
Optionally, the tab portion includes a plurality of layers of single tabs, and the tab portion further includes a tab preprocessing step for preprocessing the plurality of layers of the single tabs so as to integrate the plurality of layers of the single tabs to form the tab portion.
Optionally, the tab pretreatment includes subjecting the multilayer single-piece tab to ultrasonic pre-welding or hot pressing, and cutting the length of the multilayer single-piece tab to form the tab portion.
The invention has the beneficial effects that:
in the battery manufacturing method, the pole ear part of the electrode assembly penetrates out of the window on the main body structure and is connected with the blade, compared with the traditional pole ear part which is connected with the wing structures at two sides after winding the width direction of the main body structure, the pole ear part directly penetrates through the window and is connected with the blade and is not connected with the blade again around the width direction of the main body structure, the total size of the pole ear part and the main body structure in the width direction is reduced, the energy density of the battery is favorably improved, the length of the pole ear part can be reduced, and the use of pole ear materials is favorably reduced.
Drawings
Fig. 1 is a schematic view of an assembly of a current collecting member and a cover plate assembly according to an embodiment of the present invention;
fig. 2 is an assembly schematic view of a current collecting member, a fixing tool and a cover plate assembly according to an embodiment of the present invention;
fig. 3 is an assembly schematic diagram of a current collecting member, a fixing tool, a cover plate assembly and an electrode assembly according to an embodiment of the present invention;
FIG. 4 is a side view of the structure shown in FIG. 3;
FIG. 5 is a schematic structural view of a blade and a tab portion after ultrasonic welding according to an embodiment of the present invention;
FIG. 6 is a schematic view of a bent blade according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of the stationary tooling after being withdrawn;
FIG. 8 is a side view of the structure shown in FIG. 7;
fig. 9 is a schematic view of the structure of a current collecting member according to an embodiment of the present invention;
fig. 10 is an assembly view of a current collecting member and a fixing tool according to an embodiment of the present invention;
fig. 11 is a partially enlarged schematic view of a portion a of fig. 10.
In the figure:
1. a body structure; 11. a window; 111. a blade;
2. exporting the structure;
3. a holding structure; 31. a bending part;
100. an electrode assembly; 101. an electrode assembly side; 102. a lug portion; 1021. a first pole ear piece; 1022. a second pole ear piece; 103. fixing the tool; 104. a cover plate assembly; 105. and (4) a pole.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a battery manufacturing method, which comprises the following steps:
a positioning step, namely fixedly assembling a fixing tool 103 and the main structure 1 of the current collecting component;
in this step, as shown in fig. 9, the current collecting member structure of this embodiment includes a main body structure 1 and a lead-out structure 2 for leading out current, the lead-out structure 2 is pre-assembled and connected with a cover plate assembly 104, the cover plate assembly 104 includes poles 105 disposed at two ends, and the lead-out structure 2 is fixedly connected with the poles 105. The main body structure 1 is provided with a window 11, and the window 11 is provided with a blade 111 capable of being connected with the tab part 102. After the structure 2 to be led out is assembled and connected with the cover plate assembly 104, the fixing tool 103 is assembled and connected with the main structure 1 of the current collecting member, as shown in fig. 1 and 2.
In the above positioning step, a fixing structure 3 is arranged at one end of the main structure 1 of the current collecting member, which is assembled with the fixing tool 103, and the fixing tool 103 can be inserted into and assembled with the fixing structure 3. As shown in fig. 10, the fixing structure 3 in this embodiment is disposed at the tail of the main body structure 1, and the fixing tool 103 and the fixing structure 3 are inserted into each other to fix the main body structure 1.
Specifically, the fixing structure 3 includes a bending portion 31, a groove structure is formed on the fixing tool 103, and the bending portion 31 is inserted and fixed with the groove structure. As shown in fig. 11, the fixing structure 3 in this embodiment includes a bending portion 31, a groove structure is disposed on the fixing tool 103, and the bending portion 31 can be inserted into the groove structure of the fixing tool 103, so as to achieve quick positioning connection between the fixing tool 103 and the main structure 1, thereby facilitating improvement of assembly efficiency. In addition, the fixing tool 103 and the holding structure 3 may be connected in other types, which is not limited to this embodiment.
A connecting step, leading out the pole lug part 102 from one end of the electrode assembly 100 in the length direction, wherein the pole lug part 102 penetrates through a window 11 formed in the main body structure 1 and then is connected with a blade 111 on the window 11;
in this step, as shown in fig. 3 and 4, current collecting members are respectively disposed at the electrode assembly sides 101 at both ends of the electrode assembly 100 in the length direction, and the body structure 1 is parallel to the electrode assembly sides 101. The tab part 102 drawn out from one end of the electrode assembly 100 in the longitudinal direction is connected to the blade 111 through the window 11.
Alternatively, in the above-mentioned connecting step, two sets of the electrode assemblies 100 and the windows 11 are respectively disposed correspondingly, and the two sets of the windows 11 are disposed at intervals along the width direction of the main body structure 1; the tab parts 102 of the two sets of electrode assemblies 100 in the same direction correspondingly penetrate through the two sets of windows 11, and are correspondingly connected with the blades 111 on the two sets of windows 11. As shown in fig. 4, with reference to fig. 9, two rectangular windows 11 are formed in the main body structure 1, two corresponding sets of electrode assemblies 100 are also provided, the two sets of electrode assemblies 100 are arranged in the same row, the tab portions 102 of each set of electrode assemblies 100 correspondingly penetrate through one set of windows 11 and are correspondingly connected with the blades 111 at the windows 11, in this embodiment, the tab portions 102 at the ends of the two sets of electrode assemblies 100 in the same direction share one adapter for concentrated output, so that the number of adapters is reduced, and the battery density is further improved. In addition to the embodiment shown in fig. 4, only one electrode assembly 100 may be provided, only one window 11 may be opened on the main structure 1, and the tab 102 at one end of the electrode assembly 100 may be connected by one current collecting member, which is not limited to the connection manner of the embodiment.
Optionally, in the above-mentioned connecting step, the tab part 102 includes a first tab piece 1021 and a second tab piece 1022 which are arranged at intervals, two blades 111 are rotatably connected to each group of windows 11, and the first tab piece 1021 and the second tab piece 1022 are connected to the two blades 111 in a one-to-one correspondence. As shown in fig. 4, the present embodiment divides the tab part 102 at one end of each set of electrode assembly 100 into two separate pieces, a first tab piece 1021 and a second tab piece 1022, and the number of the blades 111 at the window 11 is also set to two, respectively connected to the first tab piece 1021 and the second tab piece 1022. It can be understood that compare with the utmost point ear portion 102 of a slice formula, this embodiment divides into first utmost point ear piece 1021 and second utmost point ear piece 1022 two parts with utmost point ear portion 102, and two slice formula utmost point ears are traditional a slice utmost point ear relatively, and it is more convenient to buckle, has promoted utmost point ear and has buckled the quality, when making things convenient for utmost point ear to buckle, does benefit to the consumption that reduces utmost point ear material, saves the cost. And the main structure 1 of the current collecting component is designed by opening a window, only the blade 111 at the window 11 is turned over when the current collecting component is used, the main structure 1 of the current collecting component bears smaller torque, and the strength of the main structure 1 is improved.
Optionally, in the above-described joining step, the tab portion 102 and the blade 111 are joined by an ultrasonic welding process. In this embodiment, the connection mode of the tab portion 102 and the blade 111 may be selected to be fixed by ultrasonic welding, as shown in fig. 5, the welding speed is fast, and the processing precision is high. In addition, a connection process other than laser welding, soldering, or the like may be employed, and the present embodiment is not limited thereto.
In the manufacturing method of the battery, the tab part 102 directly penetrates through the window to be connected with the 11 blades 111, and is not connected with the blades 111 around the width direction of the main body structure 1, so that the total size of the tab part 102 and the main body structure 1 in the width direction is reduced, the energy density of the battery is favorably improved, the length of the tab part 102 can be reduced, and the use of tab materials is favorably reduced.
Preferably, after the connecting step, a bending step is further included, the bending step includes bending the blade 111 and the tab portion 102 toward the window 11, and after the bending of the blade 111 and the tab portion 102 is completed, the fixing tool 103 is removed.
In this step, in addition to the above-mentioned manner of directly connecting the tab portion 102 with the blade 111 through the window 11, after the tab portion 102 is connected with the blade 111, the blade 111 may be bent, as shown in fig. 6, so that the blade 111 and the tab portion 102 thereon are bent toward the window 11 and at least partially cover the window 11. The overall thickness of the bent blades 111 and the tab parts 102 is reduced, which is beneficial to improving the energy density of the battery, and the main structure 1 of the current collecting member is designed through opening a window, only the blades 111 at the window 11 are turned over when the current collecting member is used, so that the main structure 1 of the current collecting member bears a smaller torque, and the strength of the main structure 1 is improved.
Optionally, the tab part 102 includes a multi-layer single tab, and the tab pretreatment is further performed on the multi-layer single tab before the connecting step, so that the multi-layer single tab is integrated to form the tab part 102. It can be understood that the tab portion 102 is formed by integrating a plurality of layers of single tabs, and the tab portion 102 is pre-processed before being bent. The pretreatment mode of the tab comprises the steps of carrying out ultrasonic prewelding or hot pressing and other treatments on the multilayer single-sheet tab, and then cutting the length of the treated multilayer single-sheet tab to form the tab part 102 with proper length by the multilayer single-sheet tab.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method of manufacturing a battery, comprising:
positioning, namely fixedly assembling a fixing tool (103) and a main structure (1) of the current collecting component;
and a connecting step, wherein a pole lug part (102) is led out from one end of the electrode assembly (100) in the length direction, and the pole lug part (102) penetrates through a window (11) formed in the main body structure (1) and then is connected with a blade (111) on the window (11).
2. The battery manufacturing method according to claim 1, further comprising, after the connecting step, a bending step including bending the blade (111) and the tab portion (102) toward a direction close to the window (11).
3. The battery manufacturing method according to claim 1, wherein in the positioning step, a fixing structure (3) is arranged at one end of the main body structure (1) assembled with the fixing tool (103), and the fixing tool (103) is assembled with the fixing structure (3) in an inserting manner.
4. The battery manufacturing method according to claim 3, wherein the fixing structure (3) comprises a bending portion (31), a groove structure is formed in the fixing tool (103), and the bending portion (31) is fixedly inserted into the groove structure.
5. The battery manufacturing method according to claim 1, wherein in the connecting step, the electrode assembly (100) and the windows (11) are respectively provided in two sets, the two sets of windows (11) being arranged at intervals in the width direction of the main structure (1); the pole ear parts (102) of the two groups of electrode assemblies (100) in the same direction correspondingly penetrate through the two groups of windows (11) and are correspondingly connected with the blades (111) on the two groups of windows (11).
6. The battery manufacturing method according to claim 5, wherein in the connecting step, the pole ear part (102) comprises a first pole ear piece (1021) and a second pole ear piece (1022) which are arranged at intervals, two blades (111) are rotatably connected to each group of the windows (11), and the first pole ear piece (1021) and the second pole ear piece (1022) are connected with the two blades (111) in a one-to-one correspondence.
7. The battery manufacturing method according to claim 1, wherein in the positioning step, one end of the current collecting member is provided with a lead-out structure (2), and the lead-out structure (2) is connected with a cap plate assembly (104).
8. The battery manufacturing method according to claim 2, wherein in the bending step, the fixing tool (103) is withdrawn after the blades (111) and the pole ear parts (102) are bent.
9. The battery manufacturing method of claim 1, wherein the tab portion (102) comprises a plurality of layers of one-piece tabs, and further comprising, prior to the step of attaching, tab pre-treating the plurality of layers of one-piece tabs to integrate the plurality of layers of one-piece tabs into the tab portion (102).
10. The battery manufacturing method of claim 9, wherein the tab pre-treatment comprises ultrasonically pre-welding or hot pressing a plurality of layers of the single tab and cutting a length of the plurality of layers of the single tab to form the tab portion (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210556038.1A CN114744373A (en) | 2022-05-20 | 2022-05-20 | Battery manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210556038.1A CN114744373A (en) | 2022-05-20 | 2022-05-20 | Battery manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN114744373A true CN114744373A (en) | 2022-07-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210556038.1A Pending CN114744373A (en) | 2022-05-20 | 2022-05-20 | Battery manufacturing method |
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| Country | Link |
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| CN (1) | CN114744373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055256A1 (en) * | 2022-09-15 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Battery cell and preparation method therefor, battery, and electrical device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007311167A (en) * | 2006-05-18 | 2007-11-29 | Hitachi Vehicle Energy Ltd | Secondary battery, battery pack, and battery module |
| CN105591061A (en) * | 2016-02-29 | 2016-05-18 | 宁德时代新能源科技股份有限公司 | Tab connecting assembly and secondary battery |
| CN111384349A (en) * | 2018-12-29 | 2020-07-07 | 宁德时代新能源科技股份有限公司 | Current collector and secondary battery |
| CN111509150A (en) * | 2020-03-20 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Lithium ion battery's electric core structure |
| CN111864172A (en) * | 2019-04-25 | 2020-10-30 | 宁德时代新能源科技股份有限公司 | Battery unit and battery module |
| CN215119060U (en) * | 2021-05-14 | 2021-12-10 | 中航锂电科技有限公司 | Battery with a battery cell |
| CN216288854U (en) * | 2021-12-07 | 2022-04-12 | 中创新航科技股份有限公司 | Battery and battery pack |
-
2022
- 2022-05-20 CN CN202210556038.1A patent/CN114744373A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007311167A (en) * | 2006-05-18 | 2007-11-29 | Hitachi Vehicle Energy Ltd | Secondary battery, battery pack, and battery module |
| CN105591061A (en) * | 2016-02-29 | 2016-05-18 | 宁德时代新能源科技股份有限公司 | Tab connecting assembly and secondary battery |
| CN111384349A (en) * | 2018-12-29 | 2020-07-07 | 宁德时代新能源科技股份有限公司 | Current collector and secondary battery |
| CN111864172A (en) * | 2019-04-25 | 2020-10-30 | 宁德时代新能源科技股份有限公司 | Battery unit and battery module |
| CN111509150A (en) * | 2020-03-20 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Lithium ion battery's electric core structure |
| CN215119060U (en) * | 2021-05-14 | 2021-12-10 | 中航锂电科技有限公司 | Battery with a battery cell |
| CN216288854U (en) * | 2021-12-07 | 2022-04-12 | 中创新航科技股份有限公司 | Battery and battery pack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055256A1 (en) * | 2022-09-15 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Battery cell and preparation method therefor, battery, and electrical device |
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