CN115020923A - Battery and method for manufacturing same - Google Patents

Battery and method for manufacturing same Download PDF

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Publication number
CN115020923A
CN115020923A CN202210426338.8A CN202210426338A CN115020923A CN 115020923 A CN115020923 A CN 115020923A CN 202210426338 A CN202210426338 A CN 202210426338A CN 115020923 A CN115020923 A CN 115020923A
Authority
CN
China
Prior art keywords
cover plate
battery
conductive
welding
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210426338.8A
Other languages
Chinese (zh)
Inventor
徐永刚
曹星宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Envision Power Technology Jiangsu Co Ltd
Envision Ruitai Power Technology Shanghai Co Ltd
Original Assignee
Envision Power Technology Jiangsu Co Ltd
Envision Ruitai Power Technology Shanghai Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Envision Power Technology Jiangsu Co Ltd, Envision Ruitai Power Technology Shanghai Co Ltd filed Critical Envision Power Technology Jiangsu Co Ltd
Priority to CN202210426338.8A priority Critical patent/CN115020923A/en
Publication of CN115020923A publication Critical patent/CN115020923A/en
Pending legal-status Critical Current

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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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a battery and a manufacturing method thereof, wherein the battery comprises: a cover plate assembly; the battery cell is positioned on the back surface of the cover plate assembly and comprises a battery cell main body and a lug extending from the battery cell main body to the direction far away from the battery cell main body, and the lug faces the cover plate assembly; the conductive piece is arranged on the cover plate component, and part of the conductive piece is exposed out of the front surface of the cover plate component; the current-conducting plate comprises a separator and a welding piece, the separator is attached to the back surface of the cover plate assembly and is electrically connected with the electric conduction piece, and the welding piece extends towards the pole lug and is connected with the pole lug in a welding mode; the cover plate assembly further comprises a plurality of supporting pieces which are arranged at intervals, and each supporting piece extends towards the direction of the cell main body and abuts against the cell main body. Because the battery includes the current-conducting plate, this current-conducting plate has the part to extend towards the utmost point ear squarely to with utmost point ear welded connection, therefore utmost point ear need not buckle, but the current-conducting plate is connected with utmost point ear after buckling, can avoid the emergence of utmost point ear interpolation phenomenon.

Description

Battery and method for manufacturing same
Technical Field
The embodiment of the invention relates to the field of batteries, in particular to a battery and a manufacturing method thereof.
Background
With the rapid development of electric vehicles, research on batteries on electric vehicles is increasing and is becoming more and more widespread.
In the conventional battery, the battery cell has a tab electrically connected to the electrode on the cover plate, and the body of the battery cell is perpendicular to the cover plate. When the tab is bent relative to the main body of the battery cell, the tab may be inserted into the battery cell, and the tab is inserted into the main body of the battery cell, so that the tab is bent and then contacts with the main body of the battery cell to cause electrical connection, thereby causing short circuit of the battery.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a battery and a method of manufacturing the same, in which tabs are not inserted to cause a short circuit of the battery.
To solve the above technical problem, an embodiment of the present invention provides a battery including:
a cover plate assembly;
the battery cell is positioned on the back surface of the cover plate assembly and comprises a battery cell main body and a lug extending from the battery cell main body to the direction far away from the battery cell main body, and the lug is arranged towards the cover plate assembly;
the conductive piece is arranged on the cover plate component, and part of the conductive piece is exposed out of the front surface of the cover plate component; and
the current-conducting plate comprises a separator and a welding piece, the separator is attached to the back face of the cover plate assembly and is electrically connected with the electric conduction piece, and the welding piece extends towards the pole lug and is connected with the pole lug in a welding mode;
the cover plate assembly further comprises a plurality of supporting pieces which are arranged at intervals, and each supporting piece extends towards the direction of the battery cell main body and is abutted against the battery cell main body.
Compared with the prior art, the battery comprises the conductive plate, and part of the conductive plate extends towards the square shape of the lug and is connected with the lug in a welding mode, so that the lug is not required to be bent, but the conductive plate is connected with the lug after being bent, and the phenomenon of lug interpolation can be avoided.
In one embodiment, the number of the battery cells is multiple, and the battery cells are arranged in parallel;
wherein, each tab is welded on two sides of the welding sheet oppositely; or each tab is welded on any side of the welding sheet.
In an embodiment, the battery cells are sequentially arranged along the width direction of the cover plate assembly;
wherein, the welding piece is arranged in the middle of the cover plate component along the width direction of the cover plate component.
In one embodiment, the conductive member includes:
the polar plate is arranged on the front surface of the cover plate assembly and is arranged in the middle of the cover plate assembly in the width direction; and
the column body penetrates through the cover plate assembly and is respectively connected with the polar plate and the bottom plate, and the column body and the polar plate are eccentrically arranged;
and/or a liquid injection hole is formed in the cover plate assembly and is positioned in the middle of the cover plate assembly in the width direction;
and a notch is formed in one side of the welding sheet, which faces the cover plate assembly, and the notch is arranged right opposite to the liquid injection hole.
In one embodiment, the cover plate assembly further comprises:
the cover plate is provided with a mounting hole, and the conductive piece is at least partially arranged in the mounting hole and is arranged at an interval with the hole wall of the mounting hole;
an upper plastic ring disposed on the front side of the cover plate, the upper plastic ring operatively separating the conductive member and the cover plate;
lower plastic, lower plastic set up in the apron back, lower plastic includes: the separator is arranged between the cover plate and the current conducting plate, and the support pieces extend from the separator to the direction of the cell main body and abut against the cell main body.
In an embodiment, the support member is a support pillar, wherein, in a direction perpendicular to the cover plate, an end surface of the welding sheet facing the cell main body is located inside an end surface of the support pillar facing the cell main body.
In one embodiment, the cover plate is a rectangular strip plate, the conductive pieces and the conductive plates are arranged in a one-to-one correspondence manner, and the conductive plates are sequentially arranged along the length direction of the cover plate assembly;
the support columns are at least four, and the four support columns are respectively located at four top corners of the cover plate.
In an embodiment, the partition plate is a long strip-shaped partition plate extending along the length direction of the cover plate, and each of the conductive plates is located on the long strip-shaped partition plate;
and/or the clapboards are arranged in sequence along the length direction of the cover plate, and the clapboards and the conductive plates are arranged in one-to-one correspondence.
In one embodiment, at least one supporting column is arranged between two adjacent conductive pieces, and the supporting column extends along the width direction of the cover plate;
and/or, the electrically conductive piece is two, two set up at least one support column between the electrically conductive piece, be located two between the electrically conductive piece have the standing groove on the support column, the standing groove is located this the support column is towards apron one side, the explosion-proof valve of battery is laid to the standing groove operationally.
In one embodiment, the battery includes a casing having an opening, the battery cell is disposed in the casing, and the cover plate assembly covers the opening;
and/or the conductive piece and the conductive plate are poles of a battery; or, the conductive piece is a pole of the battery, and the conductive plate is a circuit adapter plate.
The invention also provides a manufacturing method based on the battery, which comprises the following steps:
preparing the cover plate assembly, the battery cell, the conductive piece and the conductive plate;
disposing the conductive member and the conductive plate on the cap assembly;
abutting the lug of the battery cell to the welding sheet of the current-conducting plate without bending, and abutting each supporting piece to the battery cell main body of the battery cell;
and welding the lug on the welding sheet of the current conducting plate.
In one embodiment, the tab is multiple, and the step of welding the tab to the welding tab of the conductive plate includes the following steps:
welding partial areas of at least two adjacent tabs in advance to form a whole;
and welding the welded electrode lugs to the welding sheets of the current conducting plate.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of a battery according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the cover plate assembly after being assembled with the conductive members and the conductive plates in the embodiment of the present invention;
FIG. 3 is a structural view of a battery of an embodiment of the present invention with the housing removed;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a cross-sectional view taken at a-a in fig. 4, with the tab welded to the outside of the weld tab;
FIG. 6 is an enlarged view at A in FIG. 5;
FIG. 7 is a schematic structural diagram of a lower plastic according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a conductive plate according to an embodiment of the present invention;
fig. 9 is an exploded view of a cover plate assembly, conductive members and conductive plates in an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a lower plastic in another embodiment of the invention.
Description of reference numerals:
1. a cover plate assembly; 11. a support member; 111. a first support column; 112. a second support column; 113. a third support column; 12. a cover plate; 121. mounting holes; 13. applying a plastic ring; 14. plastic is discharged; 141. a placement groove; 142. a partition plate; 143. a through hole; 144. reinforcing ribs; 15. a seal ring; 2. an electric core; 21. a cell main body; 22. a tab; 3. a conductive member; 31. a polar plate; 32. a cylinder; 33. a positive post; 34. a negative pole post; 4. a conductive plate; 41. a base plate; 42. welding the sheet; 421. a notch; 5. a liquid injection hole; 6. a housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
An embodiment battery of the present invention is described below with reference to the accompanying drawings, as shown in fig. 1 to 6, the battery including: apron subassembly 1, electric core 2, electrically conductive 3 and current conducting plate 4, electric core 2 is located the back of apron subassembly 1 to electric core 2 includes electric core main part 21 and the utmost point ear 22 that extends toward keeping away from electric core main part 21, and utmost point ear 22 sets up towards apron subassembly 1. The conductive member 3 is disposed on the cap plate assembly 1, and a portion of the conductive member 3 is exposed from the front surface of the cap plate assembly 1. The conductive plate 4 includes a bottom plate 41 and a welding tab 42, the bottom plate 41 is attached to the back surface of the cover plate assembly 1, the bottom plate 41 is electrically connected to the conductive member 3, and the welding tab 42 extends toward the tab 22 and is welded to the tab 22. Specifically, the welding tab 42 and the cell main body 21 are spaced from each other, so as to avoid electrical connection between the welding tab 42 and the cell main body 21.
The cover plate assembly 1 further includes a plurality of supporting members 11 disposed at intervals, and each supporting member 11 extends toward the cell main body 21 and abuts against the cell main body 21.
Because the battery comprises the conductive plate 4, and part of the conductive plate 4 extends towards the direction of the tab 22 and is welded with the tab 22, the tab 22 is not bent, but the conductive plate 4 is connected with the tab 22 after being bent, and the phenomenon of inserting the tab 22 can be avoided.
In addition, as shown in fig. 3, the cover plate assembly 1 further includes a plurality of supporting members 11 disposed at intervals, and each supporting member 11 abuts against the cell main body 21, so that the cover plate 12 in the cover plate assembly 1 and the cell main body 21 can be always separated by a certain distance, thereby maintaining a vertical state of the tab 22 and avoiding bending of the flexible tab 22.
Specifically, as shown in fig. 3, a plurality of battery cells 2 are provided, each battery cell 2 is disposed in parallel with each other, and each tab 22 is welded to two sides of the welding sheet 42, but in some embodiments, each tab 22 may be only welded to any one side of the welding sheet 42. Preferably, the battery cells 2 are sequentially arranged along the width direction of the cover plate assembly 1, and the welding sheet 42 is arranged at the center of the cover plate assembly 1 along the width direction of the assembly, so that the tabs 22 can be conveniently welded on the welding sheet 42.
In addition, as shown in fig. 9, it is preferable that the conductive member 3 includes a pole plate 31 and a column 32, the pole plate 31 is disposed on the front surface of the cap assembly 1, and the pole plate 31 is disposed at the center of the cap assembly 1 in the width direction. The column 32 penetrates through the cover plate assembly 1 and is connected with the pole plate 31 and the base plate 41 respectively, and the column 32 and the pole plate 31 are arranged eccentrically, so that the column 32 can be arranged to avoid the welding sheet 42, and the column 32 is conveniently welded on the base plate 41.
Further, as shown in FIG. 9, the lid member 1 is provided with a pouring hole 5, and the pouring hole 5 is located at the middle in the width direction of the lid member 1. The welding piece 42 faces to a notch 421 on one side of the cover plate component 1, and the notch 421 is arranged opposite to the liquid injection hole 5.
As shown in fig. 2 and 8, the bottom plate 41 is provided on one side of the welding piece 42 in the longitudinal direction of the lid assembly 1, and the bottom plate 41 is shorter than the welding piece 42 in the longitudinal direction of the lid assembly 1. The base plate 41 extends from the welding tab 42 in the width direction of the lid member 1 away from the welding tab 42, and the column 32 is welded to the base plate 41.
In addition, as shown in fig. 9, the cap assembly 1 includes: the cover plate 12 is provided with a mounting hole 121, the conductive member 3 is arranged in the mounting hole 121, and the conductive member 3 and the wall of the mounting hole 121 are arranged at intervals. An upper plastic ring 13 is disposed on the front surface of the cover plate 12, and the upper plastic ring 13 can separate the conductive member 3 from the cover plate 12. The lower plastic 14 is disposed on the back of the cover plate 12, and the lower plastic 14 includes: the separator 142, the support members 11, and the separator 142 are disposed between the cover plate 12 and the conductive plate 4, so that the cover plate 12 and the conductive plate 4 can be separated from each other, and the support members 11 extend from the separator 142 toward the cell main body 21 and abut against the cell main bodies 21. The distance between the cover plate 12 and the cell main body 21 can be maintained by the support members 11, so that the flexible tab 22 is prevented from being bent down.
Specifically, as shown in fig. 3, 5, and 7, the support member 11 is a support pillar, and an end surface of the welding tab facing the cell main body 21 is located inside an end surface of the support pillar facing the cell main body 21 in a direction perpendicular to the cover plate 12. That is, the length of the welding piece is shorter than that of the support column, so that the welding piece does not touch the cell main body 21, and short circuit between the welding piece and the cell main body 21 can be avoided.
In addition, as shown in the figure, the cover plate 12 is a rectangular strip plate, the conductive pieces 3 and the conductive plates 4 are all provided in a one-to-one correspondence, and the conductive plates 4 are sequentially arranged along the length direction of the cover plate 12 assembly 1. As shown in the figure, there are at least four support columns, and the four support columns are respectively located at four top corners of the cover plate 12. By adopting the above mode, the cover plate 12 and the battery cell main body 21 can be stably and mutually separated, and the welding device for welding the tab 22 also conveniently extends into the two adjacent support columns, so that the convenience for welding the tab 22 is improved.
In addition, in order to further improve the stability of the support, at least one support column is also disposed between two adjacent conductive members 3, and the support column extends along the width direction of the cover plate 12, specifically, in this embodiment, two support columns are disposed between two adjacent conductive members 3, and the two support columns extend along the width direction of the cover plate 12, but of course, in some embodiments, only one support column may be provided.
As shown in the figure, in the present embodiment, the plurality of partition plates 142 are sequentially arranged along the length direction of the cover plate 12, and each partition plate 142 and each conductive plate 4 are correspondingly arranged. Specifically, in this embodiment, since there are two conductive members 3, there are two conductive plates 4 and two partition plates 142, each partition plate 142 is provided with a plurality of support pillars, each support pillar is arranged around the center of the partition plate 142, and the conductive plate 4 is located between the support pillars. In this embodiment, as shown in fig. 9, the partition 142 is a rectangular plate, and the number of the supporting columns is three, the three supporting columns are respectively a first supporting column 111, a second supporting column 112 and a third supporting column 113, the first supporting column 111 and the second supporting column 112 are oppositely disposed along the width direction of the cover plate 12, and the first supporting column 111 and the second supporting column 112 are respectively disposed opposite to two top corners of the partition 142. The third supporting columns 113 are elongated columns 32 extending along the width direction of the cover plate 12, and the third supporting columns 113 are disposed opposite to the first supporting columns 111 and the second supporting columns 112 along the length direction of the case.
Because the first supporting column 111 and the second supporting column 112 are arranged separately from each other, the welding gun can pass through the first supporting column 111 and the second supporting column 112, and the tab 22 can be conveniently welded on the welding sheet 42.
Of course, it should be noted that there may be four support columns, and the four support columns are respectively disposed opposite to the four top corners of the partition 142. Meanwhile, the number and the arrangement positions of the support columns can be not only the scheme listed above, but also other schemes, as long as the invention does not depart from the scope of the invention. For example, as shown in fig. 2, the first support column 111 and the second support column 112 may be joined together to form one support column.
Preferably, the support post is a hollow post, but to increase the strength of the support post, a reinforcing rib 144 is provided in the support post.
Of course, in some embodiments, as shown in fig. 10, the partition 142 may also be an elongated partition 142, the elongated partition 142 extends along the length direction of the cover 12 and is parallel to the cover 12, the conductive plates 4 are located on the elongated partition 142, and the conductive plates 4 are arranged at intervals along the length direction of the partition 142. And a supporting column is also arranged between two connected conductive plates 4, and the supporting column is positioned on the elongated partition 142.
For example, as shown in fig. 10, four fourth supporting columns 114 are respectively disposed at four top corners of the elongated partition 142, one fifth supporting column 115 is disposed in the middle of the elongated partition 142, and the fifth supporting column 115 has a placement groove 141.
In addition, as shown in fig. 9, the cover plate 12 is a long strip-shaped cover plate 12, two conductive elements 3, two sealing rings 15, two upper plastic rings 13, two lower plastic rings 14 and two conductive plates 4 are provided, the two conductive elements 3 are a positive pole 33 and a negative pole 34, respectively, and the positive pole 33 and the negative pole 34 are arranged along the length direction of the cover plate 12. In addition, as shown in fig. 9, two third supporting columns 113 of the two lower plastics 14 are disposed closely to each other, and the side of the two third supporting columns 113 facing the cover plate 12 is provided with a placing groove 141, and the placing groove 141 is operable to place the explosion-proof valve of the battery.
In addition, as shown in fig. 9, in this embodiment, the conductive member 3 and the conductive plate 4 are combined to form a battery post, so that the tab 22 is directly welded to the post, and thus an adapter plate can be eliminated.
Specifically, as shown in fig. 9, the pillar 32 in the conductive member 3 is disposed substantially perpendicular to the pole plate 31, and the pillar 32 is located in the mounting hole 121. The upper plastic ring 13 is sleeved on the column 32 and located between the pole plate 31 and the cover plate 12 to separate the pole plate 31 and the cover plate 12. The cover plate assembly 1 further comprises a sealing ring 15 sleeved outside the column body 32, and the sealing ring 15 is used for sealing a gap between the hole wall of the mounting hole 121 and the column body 32. In addition, the lower plastic 14 also has a through hole 143, the through hole 143 is coaxially disposed with the mounting hole 121 of the cover plate 12, the column 32 is located in the through hole 143 and the mounting hole 121, and the conductive plate 4 is located on the back of the lower plastic 14 and fixedly connected to the column 32.
It should be noted that, in some embodiments, the conductive member 3 may be a post of a battery, and the conductive plate 4 may be a circuit adapter plate electrically connected to the post.
In addition, as shown in fig. 1 and fig. 3, the battery further includes a casing 6, the casing 6 has an opening, the battery core 2 is disposed in the casing 6, the cover plate assembly 1 covers the opening, and a cover plate 12 in the cover plate assembly 1 is welded to the casing 6.
The invention also provides a manufacturing method based on the battery in the above embodiment, specifically, as shown in fig. 1 to 9, the manufacturing method includes the following steps: preparing a cover plate assembly 1, a battery core 2, a conductive piece 3 and a conductive plate 4, arranging the conductive piece 3 and the conductive plate 4 on the cover plate assembly 1, specifically, combining all components of the cover plate assembly 1 together, and then welding a column 32 and a bottom plate 41 together.
And then the tab 22 of the electric core 2 is supported against the welding sheet of the current-conducting plate 4 without bending, and each support piece 11 is supported against the electric core main body 21 of the electric core 2. The tab 22 is then welded to the weld plate of the conductive plate 4.
In addition, when there are a plurality of tabs 22, the specific steps of welding the tabs 22 to the welding pieces of the conductive plate 4 are as follows: the partial areas of at least two adjacent tabs 22 are welded together in advance, for example, the tabs 22 may be welded together by ultrasonic welding, or the tabs 22 may be welded together by laser welding. The welded tab 22 is welded to a welding tab of the conductive plate 4, specifically, the welding tab 42 in the above embodiment.
Of course, it should be noted that the tab 22 may be welded to one side of the tab 22, if a plurality of tabs 22 are welded together and then welded to one side of the tab 22, or the plurality of tabs 22 may be divided into two parts and welded to opposite sides of the welding piece 42.
After the welding of the tabs 22 is completed, the battery cell 2 is placed in the casing 6, and the cover plate 12 is welded to the casing 6.
While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
It is to be understood that all of the above embodiments are related, and details of the related art mentioned in one embodiment are still valid in other embodiments, and are not described again for the sake of reducing redundancy.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims (12)

1. A battery, comprising:
a cover plate assembly;
the battery cell is positioned on the back surface of the cover plate assembly and comprises a battery cell main body and a lug extending from the battery cell main body to the direction far away from the battery cell main body, and the lug is arranged towards the cover plate assembly;
the conductive piece is arranged on the cover plate component, and part of the conductive piece is exposed out of the front surface of the cover plate component; and
the conductive plate comprises a bottom plate and a welding piece, the bottom plate is attached to the back face of the cover plate assembly and is electrically connected with the conductive piece, and the welding piece extends towards the pole lug and is connected with the pole lug in a welding mode;
the cover plate assembly further comprises a plurality of supporting pieces which are arranged at intervals, and each supporting piece extends towards the direction of the battery cell main body and is abutted against the battery cell main body.
2. The battery of claim 1, wherein the battery cell is a plurality of battery cells, and the battery cells are arranged in parallel with each other;
wherein, each tab is welded on two sides of the welding sheet oppositely; or each tab is welded on any side of the welding sheet.
3. The battery of claim 1, wherein the cells are arranged in sequence along the width direction of the cover plate assembly;
wherein, the welding piece is arranged in the middle of the cover plate component along the width direction of the cover plate component.
4. The battery of claim 3, wherein the conductive member comprises:
the polar plate is arranged on the front surface of the cover plate assembly and is arranged in the middle of the cover plate assembly in the width direction; and
the column body penetrates through the cover plate assembly and is respectively connected with the polar plate and the bottom plate, and the column body and the polar plate are eccentrically arranged;
and/or a liquid injection hole is formed in the cover plate assembly and is positioned in the middle of the cover plate assembly in the width direction;
and a notch is formed in one side of the welding sheet, which faces the cover plate assembly, and the notch is arranged right opposite to the liquid injection hole.
5. The battery of claim 1, wherein the cover plate assembly further comprises:
the cover plate is provided with a mounting hole, and the conductive piece is at least partially arranged in the mounting hole and is arranged at an interval with the hole wall of the mounting hole;
an upper plastic ring disposed on the front side of the cover plate, the upper plastic ring operatively separating the conductive member and the cover plate;
lower plastic, lower plastic set up in the apron back, lower plastic includes: the separator is arranged between the cover plate and the current conducting plate, and the support pieces extend from the separator to the direction of the cell main body and abut against the cell main body.
6. The battery of claim 5, wherein the support member is a support pillar, and wherein an end surface of the weld tab facing the cell body is located inward of an end surface of the support pillar facing the cell body in a direction perpendicular to the cover plate.
7. The battery of claim 6, wherein the cover plate is an elongated rectangular plate, the conductive members and the conductive plates are arranged in a one-to-one correspondence, and the conductive plates are sequentially arranged along the length direction of the cover plate assembly;
the support columns are at least four, and the four support columns are respectively located at four top corners of the cover plate.
8. The battery of claim 7, wherein the separator is an elongated separator extending along the length of the cover plate, and each of the conductive plates is located on the elongated separator;
and/or the plurality of the partition plates are arranged in sequence along the length direction of the cover plate, and the partition plates and the conductive plates are arranged in a one-to-one correspondence mode.
9. The battery of claim 7, wherein at least one supporting column is disposed between two adjacent conductive members, and the supporting column extends along the width direction of the cover plate;
and/or, the electrically conductive piece is two, two set up at least one support column between the electrically conductive piece, be located two between the electrically conductive piece have the standing groove on the support column, the standing groove is located this the support column is towards apron one side, the explosion-proof valve of battery is operably laid to the standing groove.
10. The battery of claim 1, wherein the battery comprises a housing having an opening, the cell is disposed in the housing, and the cover plate assembly covers the opening;
and/or the conductive piece and the conductive plate are poles of a battery; or, the conductive piece is a pole of the battery, and the conductive plate is a circuit adapter plate.
11. A method for manufacturing a battery according to any one of claims 1 to 10, comprising:
disposing the conductive member and the conductive plate on the cap assembly;
the lug of the battery cell is abutted to the welding sheet of the current conducting plate without bending, and each supporting piece abuts to the battery cell main body of the battery cell;
and welding the lug on the welding sheet of the current conducting plate.
12. The method of manufacturing a battery according to claim 11, wherein the tab is plural, and the step of welding the tab to the welding tab of the conductive plate is as follows:
welding partial areas of at least two adjacent tabs in advance to form a whole;
and welding the welded electrode lugs to the welding sheets of the current conducting plate.
CN202210426338.8A 2022-04-22 2022-04-22 Battery and method for manufacturing same Pending CN115020923A (en)

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CN202210426338.8A CN115020923A (en) 2022-04-22 2022-04-22 Battery and method for manufacturing same

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Application Number Priority Date Filing Date Title
CN202210426338.8A CN115020923A (en) 2022-04-22 2022-04-22 Battery and method for manufacturing same

Publications (1)

Publication Number Publication Date
CN115020923A true CN115020923A (en) 2022-09-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115939692A (en) * 2023-02-09 2023-04-07 深圳海润新能源科技有限公司 Lower plastic component, end cover component, energy storage device and electric equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205376627U (en) * 2016-02-26 2016-07-06 宁德时代新能源科技股份有限公司 Secondary battery
CN108511639A (en) * 2018-03-08 2018-09-07 四川西丹孚能源科技有限公司 Directly draw the power battery head cover of formula downhand welding structure based on lug
CN208385543U (en) * 2018-07-02 2019-01-15 比亚迪股份有限公司 Single battery, battery modules, power battery and electric car
CN216213745U (en) * 2021-10-18 2022-04-05 星恒电源股份有限公司 Square secondary battery's top cap and secondary battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205376627U (en) * 2016-02-26 2016-07-06 宁德时代新能源科技股份有限公司 Secondary battery
CN108511639A (en) * 2018-03-08 2018-09-07 四川西丹孚能源科技有限公司 Directly draw the power battery head cover of formula downhand welding structure based on lug
CN208385543U (en) * 2018-07-02 2019-01-15 比亚迪股份有限公司 Single battery, battery modules, power battery and electric car
CN216213745U (en) * 2021-10-18 2022-04-05 星恒电源股份有限公司 Square secondary battery's top cap and secondary battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115939692A (en) * 2023-02-09 2023-04-07 深圳海润新能源科技有限公司 Lower plastic component, end cover component, energy storage device and electric equipment
US12009550B1 (en) 2023-02-09 2024-06-11 Shenzhen Hithium Energy Storage Technology Co., Ltd. Lower plastic assembly, end cover assembly, energy-storage apparatus, and electronic device

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