WO2023115993A1 - Structure d'étanchéité de formation et de remplissage de liquide et batterie - Google Patents

Structure d'étanchéité de formation et de remplissage de liquide et batterie Download PDF

Info

Publication number
WO2023115993A1
WO2023115993A1 PCT/CN2022/112443 CN2022112443W WO2023115993A1 WO 2023115993 A1 WO2023115993 A1 WO 2023115993A1 CN 2022112443 W CN2022112443 W CN 2022112443W WO 2023115993 A1 WO2023115993 A1 WO 2023115993A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
liquid injection
sealing plug
battery
sealing structure
Prior art date
Application number
PCT/CN2022/112443
Other languages
English (en)
Chinese (zh)
Inventor
励建炬
Original Assignee
深圳市科达利实业股份有限公司
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 深圳市科达利实业股份有限公司 filed Critical 深圳市科达利实业股份有限公司
Publication of WO2023115993A1 publication Critical patent/WO2023115993A1/fr

Links

Images

Classifications

    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • H01M50/645—Plugs
    • 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

Definitions

  • the present application relates to the field of battery technology, for example, it relates to liquid injection and formation sealing structures and batteries.
  • batteries are essential. After the cell is assembled, it is necessary to fill the cell with electrolyte. Therefore, a liquid injection hole is reserved on the battery cover, and the electrolyte is filled through the liquid injection hole after the battery is assembled and welded. After the electrolyte filling is completed, use a chemical nail to temporarily seal it, and start the battery cell for chemical activation. After activation, the chemical nail needs to be removed from the injection hole, and then the injection hole is permanently sealed.
  • the related sealing method is weak in sealing, and gas is generated during the operation of the battery, resulting in excessive internal pressure, and the gas will destroy the seal, so that there is a risk of electrolyte leakage, which reduces the performance of the battery.
  • the present application provides a liquid injection and chemical formation sealing structure and a battery, which can ensure the sealing of the liquid injection hole, thereby effectively preventing the leakage of the electrolyte and ensuring the performance of the battery.
  • This application provides a liquid injection and chemical formation sealing structure, including:
  • the battery cover plate is provided with a liquid injection hole for filling electrolyte
  • a sealing plug the sealing plug is passed through the liquid injection hole, and the sealing plug is configured to block the liquid injection hole;
  • a fixing piece is arranged in the liquid injection hole and located above the sealing plug, and the fixing piece is welded to the battery cover plate.
  • the application also provides a battery top cover, including:
  • a top cover sheet, the top cover sheet is provided with a positive electrode hole, a negative electrode hole, an explosion-proof hole and a liquid injection hole;
  • the positive pole protrudes into the positive pole hole and cooperates with the positive pole hole, and is connected to the positive pole pin;
  • a negative pole the negative pole protrudes into the negative pole hole and cooperates with the negative pole hole, and is connected to the negative pole pin;
  • the liquid injection and formation sealing structure fits in the liquid injection hole.
  • the application also provides a battery, comprising:
  • the box body, the upper end of the box body is open and fits with the battery top cover.
  • Fig. 1 is a sectional view of a liquid injection and formation sealing structure of the present application
  • Fig. 2 is a cross-sectional view of a battery cover plate in a liquid injection and formation sealing structure of the present application
  • Fig. 3 is a cross-sectional view of a fixing member in a liquid injection and chemical sealing structure of the present application
  • Fig. 4 is a schematic diagram of a sealing plug in a liquid injection and formation sealing structure of the present application
  • Fig. 5 is a structural schematic diagram of a battery cover plate of the present application.
  • FIG. 6 is a schematic structural diagram of a battery of the present application.
  • Battery cover plate 11. First hole; 111. First wall; 12. Second hole; 2. Sealing plug; 21. Guide cone; Groove; 32, avoidance groove; 33, second wall surface; 100, top cover sheet; 101, liquid injection hole; 200, positive pole; 201, positive pole pin; 300, negative pole pole; 301, negative pole pin; 400, explosion-proof Valve; 500, box body.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or a It is an electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or a It is an electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components.
  • a first feature being "on” or “under” a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but pass between them. additional feature contacts.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the liquid injection and formation sealing structure includes: a battery cover plate 1 , a sealing plug 2 and a fixing member 3 .
  • the battery cover plate 1 is provided with a liquid injection hole for filling the electrolyte; the sealing plug 2 is penetrated in the liquid injection hole, and the sealing plug 2 is set to block the liquid injection hole to achieve sealing; the fixing member 3 is fixedly arranged in the liquid injection hole, and is located above the sealing plug 2, and the fixing part 3 is welded to the battery cover plate 1.
  • the liquid injection hole can be blocked by setting the sealing plug 2, and the movement of the sealing plug 2 can be restricted by setting the fixing member 3. Even if gas is generated in the battery to push the sealing plug 2 to move, due to the position limitation of the fixing member 3, the sealing plug can be prevented. 2 Detach from the liquid injection hole, so as to ensure the stability of the seal, prevent electrolyte leakage, and then ensure the performance of the battery.
  • the liquid injection hole is a stepped hole, including a first hole 11 and a second hole 12 coaxially arranged, the diameter of the first hole 11 is larger than the diameter of the second hole 12, and the sealing plug 2 is located in the second hole. 12 , the fixing member 3 is located in the first hole 11 .
  • the first hole 11 is a tapered hole
  • the first hole 11 has a rounded frustum-shaped first wall surface 111
  • the peripheral surface of the fixing member 3 is a rounded frustum-shaped second wall surface matched with the first wall surface 111 33.
  • a avoidance groove 32 is defined on a side of the fixing member 3 facing the sealing plug 2 .
  • the avoidance groove 32 it is possible to avoid interference between the fixing part 3 and the top of the sealing plug 2 , thereby avoiding deformation of the fixing part 3 during installation.
  • the diameter of the escape groove 32 is larger than the diameter of the sealing plug 2 .
  • an annular groove 31 is formed on a side of the fixing member 3 facing away from the sealing plug 2 . As shown in FIG. 3 , the annular groove 31 is located at the edge of the fixing member 3 , so that the edge portion of the fixing member 3 has resilience.
  • the diameter of the fixing part 3 can be slightly larger than the diameter of the first hole 11, so that when the fixing part 3 is placed in the first hole 11, the fixing part 3 is slightly deformed after being squeezed, and the elastic Under the action of restoring force, it is in close contact with the hole wall of the first hole 11 .
  • the side of the sealing plug 2 facing away from the fixing member 3 is provided with a plurality of limiting grooves 22 , and the limiting grooves 22 are evenly arranged along the circumferential direction of the sealing plug 2 . In the above manner, the installation of the sealing plug 2 is facilitated.
  • the end of the sealing plug 2 facing away from the fixing member 3 is provided with a guide cone 21 .
  • the guide cone portion 21 and the sealing plug 2 are an integral structure. The insertion of the sealing plug 2 into the second hole 12 is facilitated by providing the guide cone portion 21 .
  • the liquid injection and chemical formation sealing structure provided in this embodiment has a liquid injection hole on the battery cover, and a sealing plug is inserted in the liquid injection hole to seal the liquid injection hole, thereby realizing the sealing of the liquid injection hole , a fixing piece is arranged above the sealing plug, the fixing piece is located in the liquid injection hole, and is welded with the battery cover to ensure the tightness of the connection between the fixing piece and the battery cover.
  • the liquid injection hole can be blocked by setting the sealing plug, and the movement of the sealing plug can be restricted by setting the fixing member. Even if the gas is generated in the battery to push the sealing plug to move, the position limitation of the fixing member can prevent the sealing plug from entering the liquid injection hole. Detachment, so as to ensure the stability of the seal, prevent electrolyte leakage, and then ensure the performance of the battery.
  • the present application also discloses a battery top cover, which includes a top cover sheet 100 , a positive pole 200 , a negative pole 300 , an explosion-proof valve 400 and a liquid injection and chemical formation sealing structure.
  • the top cover sheet 100 is provided with a positive pole hole, a negative pole hole, an explosion-proof hole and a liquid injection hole 101;
  • the positive pole pole 200 extends into the positive pole hole and cooperates with the positive pole hole, and is connected with the positive pole pin 201;
  • the negative pole pole 300 extends into the negative electrode hole and cooperate with the negative electrode hole, and connect with the negative electrode pin 301;
  • the explosion-proof valve 400 is fitted in the explosion-proof hole;
  • the battery top cover of the present invention has the above-mentioned liquid injection and chemical formation sealing structure, which can ensure the sealing of the liquid injection hole, thereby effectively preventing the leakage of the electrolyte and ensuring the performance of the battery.
  • the present invention also discloses a battery, which includes a battery top cover and a box body 500 .
  • the upper end of the box body 500 is open and fitted with the battery top cover.
  • the battery provided in this embodiment can ensure the sealing of the liquid injection hole, thereby effectively preventing the leakage of the electrolyte and ensuring the performance of the battery.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling, Topping-Up Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

La présente invention concerne une structure d'étanchéité de formation et de remplissage de liquide et une batterie. La structure d'étanchéité de formation et de remplissage de liquide comprend une plaque de couvercle de batterie, la plaque de couvercle de batterie comprenant un trou de remplissage de liquide, qui est conçu pour remplir d'électrolyte ; un bouchon d'étanchéité, le bouchon d'étanchéité étant disposé dans le trou de remplissage de liquide d'une manière pénétrante, et le bouchon d'étanchéité étant conçu pour bloquer le trou de remplissage de liquide pour l'étanchéité ; et un élément de fixation, l'élément de fixation étant disposé dans le trou de remplissage de liquide et situé au-dessus du bouchon d'étanchéité, et l'élément de fixation étant soudé à la plaque de couvercle de batterie.
PCT/CN2022/112443 2021-12-20 2022-08-15 Structure d'étanchéité de formation et de remplissage de liquide et batterie WO2023115993A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202123200439.3 2021-12-20
CN202123200439.3U CN218215628U (zh) 2021-12-20 2021-12-20 一种注液及化成密封结构和电池

Publications (1)

Publication Number Publication Date
WO2023115993A1 true WO2023115993A1 (fr) 2023-06-29

Family

ID=83898673

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/112443 WO2023115993A1 (fr) 2021-12-20 2022-08-15 Structure d'étanchéité de formation et de remplissage de liquide et batterie

Country Status (5)

Country Link
CN (1) CN218215628U (fr)
DE (1) DE202022104204U1 (fr)
FR (1) FR3131102B3 (fr)
HU (1) HU5569U (fr)
WO (1) WO2023115993A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117673680A (zh) * 2024-01-31 2024-03-08 蜂巢能源科技股份有限公司 电池密封结构及电池

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206961937U (zh) * 2017-06-30 2018-02-02 大族激光科技产业集团股份有限公司 电池及其密封组件
CN107978700A (zh) * 2017-12-28 2018-05-01 桑德集团有限公司 一种用于电池金属外壳的盖板以及金属外壳
CN208368558U (zh) * 2018-07-23 2019-01-11 宁德时代新能源科技股份有限公司 动力电池及其顶盖组件
CN211828848U (zh) * 2020-04-30 2020-10-30 蜂巢能源科技有限公司 电池盖板组件及具有其的电池和车辆
CN213752974U (zh) * 2020-09-08 2021-07-20 厦门海辰新能源科技有限公司 锂离子电池顶盖及基于该顶盖的电池组件
CN214848969U (zh) * 2021-01-04 2021-11-23 厦门海辰新能源科技有限公司 二次电池的顶盖组件及二次电池
CN114221096A (zh) * 2021-12-10 2022-03-22 湖北亿纬动力有限公司 一种电池顶盖组件
CN216354675U (zh) * 2021-10-18 2022-04-19 厦门海辰新能源科技有限公司 一种电池顶盖
CN217158403U (zh) * 2022-03-17 2022-08-09 宁德时代新能源科技股份有限公司 电池单体、电池以及用电装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206961937U (zh) * 2017-06-30 2018-02-02 大族激光科技产业集团股份有限公司 电池及其密封组件
CN107978700A (zh) * 2017-12-28 2018-05-01 桑德集团有限公司 一种用于电池金属外壳的盖板以及金属外壳
CN208368558U (zh) * 2018-07-23 2019-01-11 宁德时代新能源科技股份有限公司 动力电池及其顶盖组件
CN211828848U (zh) * 2020-04-30 2020-10-30 蜂巢能源科技有限公司 电池盖板组件及具有其的电池和车辆
CN213752974U (zh) * 2020-09-08 2021-07-20 厦门海辰新能源科技有限公司 锂离子电池顶盖及基于该顶盖的电池组件
CN214848969U (zh) * 2021-01-04 2021-11-23 厦门海辰新能源科技有限公司 二次电池的顶盖组件及二次电池
CN216354675U (zh) * 2021-10-18 2022-04-19 厦门海辰新能源科技有限公司 一种电池顶盖
CN114221096A (zh) * 2021-12-10 2022-03-22 湖北亿纬动力有限公司 一种电池顶盖组件
CN217158403U (zh) * 2022-03-17 2022-08-09 宁德时代新能源科技股份有限公司 电池单体、电池以及用电装置

Also Published As

Publication number Publication date
CN218215628U (zh) 2023-01-03
HU5569U (hu) 2023-02-28
DE202022104204U1 (de) 2022-10-18
FR3131102B3 (fr) 2024-02-02
FR3131102A3 (fr) 2023-06-23

Similar Documents

Publication Publication Date Title
WO2023151320A1 (fr) Ensemble plaque de couvercle de batterie, batterie cylindrique et bloc-batterie
WO2023115993A1 (fr) Structure d'étanchéité de formation et de remplissage de liquide et batterie
JP5224324B2 (ja) 密閉型電池
WO2024045458A1 (fr) Ensemble couvercle supérieur, batterie et dispositif électrique
WO2008049293A1 (fr) Ensemble plaque de couverture antidéflagrant et batterie
WO2006133618A1 (fr) Ensemble plaque de recouvrement destine a une batterie au lithium, boitier de batterie et batterie utilisant ledit ensemble
WO2023006050A1 (fr) Batterie et produit électronique
CN112234326A (zh) 一种电池注液口结构及电池盖板
CN213936475U (zh) 一种电池注液口结构及电池盖板
JP3241009U (ja) 動力電池蓋板及び動力電池
CN213782112U (zh) 一种多功能锂电池盖帽封口结构
JP5716713B2 (ja) 密閉型電池
CN216818477U (zh) 一种锂电池顶盖结构及锂电池
WO2023103395A1 (fr) Plaque de couvercle supérieur de batterie et batterie
CN212542633U (zh) 一种电池注液结构、电池顶盖及动力电池
KR101315186B1 (ko) 밸브 제어식 납축전지에서의 배기구 어셈블리 및 그 조립방법
WO2024021313A1 (fr) Ensemble d'étanchéité et batterie
CN111952531A (zh) 一种电池注液结构、电池顶盖及动力电池
JP2000200597A (ja) 電 池
KR20050041308A (ko) 납축전지용 인디케이터
CN218677348U (zh) 电池盖板及电池
CN219759764U (zh) 电池的盖板组件及包括其的二次电池
CN217788570U (zh) 一种密封件、电池顶盖及动力电池
CN217387483U (zh) 一种注液孔密封结构及电池包
WO2024027813A1 (fr) Plaque de recouvrement de batterie, batterie et dispositif électrique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22909321

Country of ref document: EP

Kind code of ref document: A1