CN111403816A - Battery with a battery cell - Google Patents

Battery with a battery cell Download PDF

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Publication number
CN111403816A
CN111403816A CN202010241113.6A CN202010241113A CN111403816A CN 111403816 A CN111403816 A CN 111403816A CN 202010241113 A CN202010241113 A CN 202010241113A CN 111403816 A CN111403816 A CN 111403816A
Authority
CN
China
Prior art keywords
battery
bottom wall
tab
cup body
battery cell
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
CN202010241113.6A
Other languages
Chinese (zh)
Inventor
曾玉祥
王永旺
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.)
Zhuhai Coslight Battery Co Ltd
Original Assignee
Zhuhai Coslight Battery 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 Zhuhai Coslight Battery Co Ltd filed Critical Zhuhai Coslight Battery Co Ltd
Priority to CN202010241113.6A priority Critical patent/CN111403816A/en
Publication of CN111403816A publication Critical patent/CN111403816A/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
    • 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
    • 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)
  • Materials Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The present invention provides a battery comprising: the battery comprises a shell and a battery cell, wherein the shell comprises a first bottom wall and a second bottom wall which are arranged oppositely, and part of the second bottom wall protrudes towards the direction of the first bottom wall to form a protruding part; the battery cell comprises a first tab and a second tab, the first tab is connected with the first bottom wall, and the second tab is connected with the top surface of the protruding portion. The first tab and the second tab of the battery cell may be connected to the same side of the cell by the protrusion on the second bottom wall. When the battery is processed, the processing of the two pole lugs can be finished at the same side, the processing procedure of the battery is simplified, and the processing efficiency of the battery is improved. Meanwhile, the battery cell can be fixed due to the protruding part, so that the battery cell is prevented from moving, and the safety performance of the battery is improved.

Description

Battery with a battery cell
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery.
Background
With the development of technology, people have increasingly raised requirements for wearable electronic devices, and one of the important components in wearable electronic devices is a battery. The battery assembly needs to connect the battery core inside the battery with an external shell structure through the tabs, so that the normal operation of the battery is realized.
Two lugs of the existing battery are usually arranged on the positive pole and the negative pole of the battery, and the battery needs to be turned over to process the lugs, so that the processing procedure of the lugs is complicated.
Therefore, the conventional battery has the problem of complicated processing procedures.
Disclosure of Invention
The embodiment of the invention aims to provide a battery, which solves the problem that the existing battery is complicated in processing procedure.
In order to achieve the above object, an embodiment of the present invention provides a battery, including: a shell and a battery core, wherein,
the shell comprises a first bottom wall and a second bottom wall which are oppositely arranged, and part of the second bottom wall protrudes towards the first bottom wall to form a protruding part; the battery cell comprises a first tab and a second tab, the first tab is connected with the first bottom wall, and the second tab is connected with the top surface of the protruding portion.
Optionally, one side of the protruding portion departing from the first bottom wall is formed with an accommodating cavity, and the accommodating cavity accommodates the conductive column.
Optionally, the casing includes a first cup, a second cup, and a first insulator, wherein:
the first cup body and the second cup body are cavities with one ends open, the first cup body comprises a first bottom wall and a first side wall connected to the first bottom wall, and the second cup body comprises a second bottom wall and a second side wall connected to the second bottom wall; the opening of the first cup body is opposite to the opening of the second cup body, the first side wall extends into the opening of the second cup body, the first side wall and the second side wall are connected through the first insulating part, so that the first cup body and the second cup body are sealed to form a containing cavity, and the battery cell is contained in the containing cavity.
Optionally, the housing further includes a second insulating member, and the second insulating member covers a portion of the second bottom wall that is not raised.
Optionally, the first sidewall abuts against the second insulating member.
Optionally, the housing further includes a third insulating member, and the third insulating member covers a side surface of the protruding portion.
Optionally, an insulating adhesive paper is arranged between the first tab and the second tab.
Optionally, the first tab and the insulating gummed paper are bonded; and the second tab is bonded with the insulating gummed paper.
Optionally, the width of the protrusion is 10-30% of the width of the battery.
Optionally, the length of the protrusion is greater than 80% of the height of the cell.
One of the above technical solutions has the following advantages or beneficial effects:
the embodiment of the invention provides a battery, which comprises: the battery comprises a shell and a battery cell, wherein the shell comprises a first bottom wall and a second bottom wall which are arranged oppositely, and part of the second bottom wall protrudes towards the direction of the first bottom wall to form a protruding part; the battery cell comprises a first tab and a second tab, the first tab is connected with the first bottom wall, and the second tab is connected with the top surface of the protruding portion. The first tab and the second tab of the battery cell may be connected to the same side of the cell by the protrusion on the second bottom wall. When the battery is processed, the processing of the two pole lugs can be finished at the same side, the processing procedure of the battery is simplified, and the processing efficiency of the battery is improved. Meanwhile, the battery cell can be fixed due to the protruding part, so that the battery cell is prevented from moving, and the safety performance of the battery is improved.
Drawings
Fig. 1 is a top view of a battery according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line G-G of FIG. 1;
fig. 3 is a schematic diagram of a battery cell in a battery according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, an embodiment of the present invention provides a battery, including: the case 100, and the battery cell 200, wherein,
the housing 100 includes a first bottom wall 111 and a second bottom wall 121 which are oppositely arranged, and a part of the second bottom wall 121 protrudes towards the first bottom wall 111 to form a convex part 1211; the battery cell 200 includes a first tab 210 and a second tab 220, the first tab 210 is connected to the first bottom wall 111, and the second tab 220 is connected to the top surface of the protruding portion 1211.
The housing 100 is made of a metal conductive material, such as an aluminum-manganese alloy, and the like, which is not limited herein; the first tab 210 and the first bottom wall 111 can be welded by laser, electric welding or heat sealing; the second tab 220 may be welded to the top surface of the projection 1211 by laser, electric welding, or heat sealing, but is not limited thereto.
In the embodiment of the present invention, a portion of the second bottom wall 121 protrudes toward the first bottom wall 111 to form a protrusion 1211. Since the protrusion 1211 has a certain length, the top surface of the protrusion 1211 may be close to the first bottom wall 111. The first tab 210 of the battery cell 200 is connected to the first bottom wall 111, and the second tab 220 of the battery cell 200 is connected to the top surface of the protruding portion 1211, so that the first tab 210 and the second tab 220 of the battery cell 200 are located on the same side of the battery cell 200, when the battery structure is processed, the processing of the two tabs can be completed on the same side of the battery, the processing procedure of the battery is simplified, and the processing efficiency of the battery is improved.
In addition, the protrusion 1211 is provided to facilitate fixing the battery cell 200 and prevent the battery cell 200 from moving, for example, the protrusion 1211 may extend into the through hole in the middle of the battery cell 200 when the battery cell 200 is wound, and the protrusion 1211 may be disposed on the battery cell 200 while the battery cell 200 is fixed, so as to fully utilize the space and improve the capacity of the battery.
The embodiment of the invention provides a battery, which comprises: the battery cell comprises a casing 100 and a battery cell 200, wherein the casing 100 comprises a first bottom wall 111 and a second bottom wall 121 which are oppositely arranged, and part of the second bottom wall 121 protrudes towards the first bottom wall 111 to form a protruding part 1211; the battery cell 200 includes a first tab 210 and a second tab 220, the first tab 210 is connected to the first bottom wall 111, and the second tab 220 is connected to the top surface of the protruding portion 1211. The first tab 210 and the second tab 220 of the battery cell 200 can be connected to the same side of the battery cell 200 by the protrusion 1211 on the second bottom wall 121. When the battery is processed, the processing of the two pole lugs can be finished at the same side, the processing procedure of the battery is simplified, and the processing efficiency of the battery is improved. Meanwhile, the protrusion 1211 can fix the battery cell 200, so that the battery cell 200 is prevented from moving, and the safety performance of the battery is improved.
Optionally, a receiving cavity is formed on a side of the protruding portion 1211 facing away from the first bottom wall 111, and the receiving cavity receives the conductive post 300 therein.
In this embodiment, the conductive post 300 can further ensure the conduction between the protruding portion 1211 and the first bottom wall 111, and further ensure the normal operation of the battery.
Further, the conductive post 300 is integrally formed with the second bottom wall 121 by stamping, as shown in fig. 2. The integral structure of the battery can be more stable through the integral forming. In addition, the conductive post 300 may be welded to the second bottom wall 121, including laser welding, electric welding, or the like, which is not limited herein.
Optionally, the shell 100 includes a first cup 110, a second cup 120, a first insulator 130, wherein: the first cup 110 and the second cup 120 are both cavities with one open end, the first cup 110 includes a first bottom wall 111 and a first side wall 112 connected to the first bottom wall 111, and the second cup 120 includes a second bottom wall 121 and a second side wall 122 connected to the second bottom wall 121; the opening of the first cup body 110 is opposite to the opening of the second cup body 120, the first side wall 112 extends into the opening of the second cup body 120, and the first side wall 112 and the second side wall 122 are connected through the first insulating member 130, so that the first cup body 110 and the second cup body 120 are sealed to form a containing chamber in which the battery cell 200 is contained;
the first insulating member 130 may be a rubber ring, or may be a rubber ring made of other insulating materials or other insulating connecting members such as insulating gummed paper; the first cup 110 and the second cup 120 are made of a metal conductive material, such as an aluminum-manganese alloy, and the like, which is not limited herein.
In this embodiment, the diameter of the first bottom wall 111 of the first cup 110 is smaller than the diameter of the second bottom wall 121 of the second cup 120, the first sidewall 112 of the first cup 110 extends into the second cup 120 and is surrounded by the second sidewall 122 of the second cup 120, and the first insulating member 130 insulates and seals between the first cup 110 and the second cup 120, thereby ensuring the normal operation of the battery. Such a nested structure may make the overall cell structure more stable and sealed. The first sidewall 112 may partially extend into the second cup 120, or may fully extend into the second cup 120, which is not limited herein.
In this embodiment, the first sidewall 112 and the first insulating member 130 can be connected by laser welding, electric welding, heat sealing, or injection molding; similarly, the second sidewall 122 and the first insulating member 130 may be laser welded, electric welded, heat sealed or injection molded, but are not limited thereto. The structure of welding, butt fusion or injection molding connection can improve the stability of the whole structure of the battery.
Further, the housing 100 further includes a second insulating member 140, and the second insulating member 140 covers the non-protruding portion of the second bottom wall 121.
The second insulating member 140 may be a rubber pad, or may be a rubber pad made of other insulating materials or other insulating members such as insulating gummed paper.
In this embodiment, in addition to the connection between the first sidewall 112 and the second sidewall 122 through the first insulating member 130, the portion of the second bottom wall 121 of the second cup 120 that is not protruded may be covered with the second insulating member 140, so as to further ensure the insulation between the battery cell 200 and the casing 100, and further ensure the normal operation of the battery.
Further, the first sidewall 112 may abut against the second insulating member 140.
In this embodiment, based on that the second insulating member 140 can cover the non-protruding portion of the second bottom wall 121, the first sidewall 112 of the first cup 110 can completely extend into the second cup 120, and the first sidewall 112 can be abutted against the second insulating member 140. At this time, the first bottom wall 111, the first side wall 112, and the second bottom wall 121 enclose the housing chamber, further reducing the size of the battery as a whole in the thickness direction.
Optionally, the housing 100 further includes a third insulating member, where the third insulating member may be a rubber pad, or may be a rubber pad made of other insulating materials or other insulating members such as insulating adhesive paper. The third insulating member covers the side surface of the protruding portion 1211, so that insulation between the battery cell 200 and the casing 100 can be further ensured, and normal operation of the battery can be further ensured.
Optionally, an insulating adhesive paper 230 is disposed between the first tab 210 and the second tab 220.
Further, the first tab 210 is bonded with the adhesive paper 230; the second tab 220 is adhered to the adhesive paper 230.
In this embodiment, since the space inside the battery except the battery cell 200 is small, and the first tab 210 and the second tab 220 are both connected to the same side of the battery cell 200, the first tab 210 and the second tab 220 are closer to each other. In order to prevent the first tab 210 and the second tab 220 from contacting each other to cause short circuit between the positive and negative electrodes and affect the normal operation of the battery, the first tab 210 and the second tab 220 are adhered to each other by an adhesive paper 230. The insulating gummed paper is light and thin, does not occupy too much inner space, and the processing of direct bonding can, has further simplified the processing technology of battery.
Alternatively, the width of the projection 1211 is 10-30% of the width of the battery.
In this embodiment, the width of the projection 1211 is 10 to 30% of the width of the battery. Too wide a projection 1211 tends to occupy a large space inside the battery case, thereby relatively reducing the capacity of the battery cell.
Alternatively, the length of the projection 1211 is greater than 80% of the height of the battery.
In this embodiment, since the second tab 220 is connected to the top surface of the protruding portion 1211, the protruding portion 1211 needs to extend out of the battery cell at least to be close to the first bottom wall 111. This further ensures that the first tab 210 and the second tab 220 are located on the same side of the battery, further facilitating the processing of the battery.
To sum up, an embodiment of the present invention provides a battery, including: the battery cell comprises a casing 100 and a battery cell 200, wherein the casing 100 comprises a first bottom wall 111 and a second bottom wall 121 which are oppositely arranged, and part of the second bottom wall 121 protrudes towards the first bottom wall 111 to form a protruding part 1211; the battery cell 200 includes a first tab 210 and a second tab 220, the first tab 210 is connected to the first bottom wall 111, and the second tab 220 is connected to the top surface of the protruding portion 1211. The first tab 210 and the second tab 220 of the battery cell 200 can be connected to the same side of the battery cell 200 by the protrusion 1211 on the second bottom wall 121. When the battery is processed, the processing of the two pole lugs can be finished at the same side, the processing procedure of the battery is simplified, and the processing efficiency of the battery is improved. Meanwhile, the battery cell can be fixed due to the protruding part, so that the battery cell is prevented from moving, and the safety performance of the battery is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A battery, comprising: a shell and a battery core, wherein,
the battery cell comprises a first tab and a second tab, wherein the first tab is connected with the first bottom wall, and the second tab is connected with the top surface of the lug.
2. The battery according to claim 1, wherein a receiving cavity is formed on a side of the protruding portion facing away from the first bottom wall, and the receiving cavity receives the conductive post therein.
3. The battery of claim 1, wherein the housing comprises a first cup, a second cup, and a first insulator, wherein:
the first cup body and the second cup body are cavities with one ends open, the first cup body comprises a first bottom wall and a first side wall connected to the first bottom wall, and the second cup body comprises a second bottom wall and a second side wall connected to the second bottom wall; the opening of the first cup body is opposite to the opening of the second cup body, the first side wall extends into the opening of the second cup body, the first side wall and the second side wall are connected through the first insulating part, so that the first cup body and the second cup body are sealed to form a containing cavity, and the battery cell is contained in the containing cavity.
4. The battery of claim 3, wherein the housing further comprises a second insulating member covering an unembossed portion of the second bottom wall.
5. The battery of claim 4, wherein the first sidewall abuts against the second insulator.
6. The battery of claim 3, wherein the housing further comprises a third insulating member covering the sides of the raised portion.
7. The battery of claim 1, wherein an adhesive paper is disposed between the first and second tabs.
8. The battery of claim 7, wherein the first tab is bonded to the adhesive paper; and the second tab is bonded with the insulating gummed paper.
9. The battery of claim 1, wherein the width of the protrusions is 10-30% of the width of the battery.
10. The battery of claim 1, wherein the length of the protrusion is greater than 80% of the height of the battery.
CN202010241113.6A 2020-03-31 2020-03-31 Battery with a battery cell Pending CN111403816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010241113.6A CN111403816A (en) 2020-03-31 2020-03-31 Battery with a battery cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010241113.6A CN111403816A (en) 2020-03-31 2020-03-31 Battery with a battery cell

Publications (1)

Publication Number Publication Date
CN111403816A true CN111403816A (en) 2020-07-10

Family

ID=71433865

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010241113.6A Pending CN111403816A (en) 2020-03-31 2020-03-31 Battery with a battery cell

Country Status (1)

Country Link
CN (1) CN111403816A (en)

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Legal Events

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CB02 Change of applicant information

Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province

Applicant after: Zhuhai CosMX Battery Co.,Ltd.

Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province

Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd.

CB02 Change of applicant information
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination