WO2021036685A1 - Couvercle de batterie et structure d'assemblage de pôle, et procédé d'assemblage - Google Patents

Couvercle de batterie et structure d'assemblage de pôle, et procédé d'assemblage Download PDF

Info

Publication number
WO2021036685A1
WO2021036685A1 PCT/CN2020/106419 CN2020106419W WO2021036685A1 WO 2021036685 A1 WO2021036685 A1 WO 2021036685A1 CN 2020106419 W CN2020106419 W CN 2020106419W WO 2021036685 A1 WO2021036685 A1 WO 2021036685A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
metal
top cover
metal block
nail
Prior art date
Application number
PCT/CN2020/106419
Other languages
English (en)
Chinese (zh)
Inventor
姜斌
邹武元
李勇军
王程
郭玉国
Original Assignee
江苏塔菲尔新能源科技股份有限公司
东莞塔菲尔新能源科技有限公司
深圳塔菲尔新能源科技有限公司
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 江苏塔菲尔新能源科技股份有限公司, 东莞塔菲尔新能源科技有限公司, 深圳塔菲尔新能源科技有限公司 filed Critical 江苏塔菲尔新能源科技股份有限公司
Publication of WO2021036685A1 publication Critical patent/WO2021036685A1/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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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

Definitions

  • the invention belongs to the technical field of battery production and manufacturing, and specifically relates to an assembly structure and an assembly method of a battery top cover and a pole.
  • lithium batteries used in electric tools and electric cars are generally called power batteries.
  • the structure of the power battery pole and the top cover and the quality of the manufacturing process directly affect the performance of the lithium-ion battery cell and even the entire battery.
  • the Chinese Patent Document discloses a battery cover plate with raised poles (publication number: CN 208570681 U), including: a battery cover plate, the top and left ends of the battery cover plate are respectively equipped with a positive electrode assembly and a negative electrode assembly;
  • the battery cover plate is formed by buckling an upper cover plate and a lower cover plate; the left and right sides of the upper cover plate and the lower cover plate are respectively provided with a positive electrode mounting hole and a negative electrode mounting hole, and the left and right sides of the lower cover plate It can be disassembled and assembled with the intermediate explosion-proof insulation device.
  • this solution prevents the battery from swelling to a certain extent, but the inventor found that this solution has at least the following drawbacks: first, the structure is complex and difficult to disassemble and install; second, the pole is composed of a bottom base and a cylinder, which requires The friction welding process is used to connect, which leads to an increase in cost; third, the stability between the pole and the battery cover is poor, and it is susceptible to failure due to factors such as the environment, and the safety risk is greater.
  • One of the objectives of the present invention is to provide a battery top cover and pole assembly structure in view of the shortcomings of the prior art, which eliminates the need to form poles through friction welding, can reduce the production cost of the top cap and pole pole assembly, and also It can improve the overall overcurrent capability of the pole, and at the same time, improve the stability between the pole and the battery cover, which helps to improve the safety performance of the battery cell.
  • a battery top cover and pole assembly structure including a top cover sheet, a first pole and a second pole installed on the top cover sheet, the first pole and the top cover sheet are enclosed between A first plastic part is formed with glue, a second plastic part is formed with glue between the second pole and the top cover sheet, and the first pole includes a first metal block and at least one and the first A first metal nail with a concave-convex fit with a metal block, the first metal nail is welded to the first metal block, and the second pole includes a second metal block and at least one second metal block with a concave-convex fit with the second metal block. Two metal nails, the second metal nail is welded to the second metal block.
  • the bottom of the first metal block is provided with a first groove that cooperates with the first metal nail, and the first The end of the metal nail is welded to the first groove
  • the bottom of the second metal block is provided with a second groove that is matched with the second metal nail, and the end of the second metal nail is welded to the Mentioned second groove.
  • the top of the first metal block is provided with a first step, and the first plastic part is provided with the first step.
  • the top of the second metal block is provided with a second step, and the second plastic part is provided with a second convex hull that is matched with the second step.
  • the top cover sheet is also provided with at least one of an explosion-proof valve vent hole and a liquid injection hole, and the top cover sheet and An explosion-proof valve is installed between the lower plastics, and a protective film is installed on the top of the vent of the explosion-proof valve.
  • a sealing ring is sleeved between the first metal nail and the top cover sheet, and the second metal nail and the A sealing ring is sleeved between the top cover pieces, the bottom end of the first metal nail is welded with a first connecting piece, the bottom end of the second metal nail is welded with a second connecting piece, and the first connecting piece A lower plastic is arranged between the second connecting piece and the top cover piece.
  • the first metal block and the second metal block are both made of aluminum or copper-aluminum composite material, and the first metal block and the second metal block are made of aluminum or copper-aluminum composite material.
  • the metal nail and the first connecting piece adopt a welding structure of copper and aluminum, and the second metal nail and the second connecting piece adopt a welding structure of aluminum and copper.
  • the top cover sheet is provided with a pole mounting hole, and the first pole and the second pole pass through respectively
  • the pole mounting hole is fixed to the top cover sheet, a recess is formed on the top of the pole mounting hole, and the first plastic part and the second plastic part are respectively accommodated in the recess.
  • the first plastic part and the first pole are molded into an integral structure by overmolding
  • the second plastic part and The second pole is molded into an integral structure by overmolding
  • the first plastic part and the second plastic part are both integrally formed of PPS plastic, PSU plastic or nano-plastic.
  • the first plastic part is conductive plastic
  • the second plastic part is insulating plastic
  • the resistance of the conductive plastic is 10 ⁇ ⁇ 30000 ⁇ .
  • the electrical resistance of the conductive plastic is 1001 ⁇ -30000 ⁇ .
  • the second objective of the present invention is to provide a method for assembling the battery top cover and the pole, including:
  • At least one first metal nail is concave-convex matched with the first metal block, and then the first metal nail is welded to the first metal block to form a first pole;
  • At least one second metal nail is concave-convex matched with the second metal block, and then the second metal nail is welded to the second metal block to form a second pole;
  • the first pole and the second pole are mounted on the top cover sheet, and then the first plastic part is encapsulated between the first pole and the top cover sheet, and the second plastic part is wrapped Glue between the second pole and the top cover sheet.
  • the first metal nail and the first metal block are unevenly matched, the second metal nail is unevenly matched with the second metal block, the first metal nail is welded to the first metal block, and the second metal nail is welded to the first metal block.
  • the metal nail is welded to the second metal block.
  • the first metal block and the second metal block can weld multiple metals
  • the metal nails do not affect each other during the welding process, which is beneficial to improve the flow capacity.
  • the number of the first metal nail and the second metal nail is two, but the first metal nail and the second metal nail The number can be increased according to the actual overcurrent demand.
  • the present invention includes a top cover sheet, a first pole and a second pole installed on the top cover sheet, and a rubber encapsulation is formed between the first pole and the top cover sheet.
  • a first plastic part, a second plastic part is formed between the second pole and the top cover sheet by encapsulation, and the first pole includes a first metal block and at least one concave and convex portion with the first metal block
  • a matched first metal nail, the first metal nail is welded to the first metal block
  • the second pole includes a second metal block and at least one second metal nail that is concave-convex matched with the second metal block , The second metal nail is welded to the second metal block.
  • the pole is generally composed of a bottom base and a cylinder connected to the bottom base, when the two materials are different, friction welding is required to form the structure, which is costly, and the pole is assembled and riveted from top to bottom, resulting in the pole
  • the risk of failure due to environmental factors increases. Therefore, the first metal nail is concave-convex matched with the first metal block, the second metal nail is concave-convex matched with the second metal block, the first metal nail is welded to the first metal block, and the second metal nail is welded to the first metal block.
  • this structure is easy to produce and assemble, ensuring the stability between the metal nail and the metal block, even if the metal nail and the metal block are of different materials, such as copper and aluminum welding, there is no need to use high-cost friction
  • the welding or welding process helps to reduce the overall assembly cost of the top cover and the pole.
  • the first metal block 11 and the second metal block 21 can both weld multiple metal nails.
  • the metal nails do not affect each other during the welding process, which is beneficial to improve the current flow capacity of the pole.
  • the number of the first metal nail and the second metal nail is two, and the first metal nail and the second metal nail have two
  • the quantity can be increased according to the actual over-current demand; the first plastic part and the first pole are encapsulated into an integrated structure to ensure that the first plastic part can wrap the first pole to realize the first plastic part and the first pole
  • the electrical connection function of the second plastic part and the second pole is made into an integral structure through encapsulation to ensure that the second plastic part wraps the second pole to achieve the insulation function of the second plastic part and the second pole.
  • due to The encapsulation method is adopted to improve the mechanical performance between the two and prevent the first pole or the second pole from loosening due to the influence of the external environment.
  • the invention eliminates the need to form the pole by friction welding, can reduce the production cost of the top cover and the pole assembly, can also improve the overall flow capacity of the pole, and at the same time, improve the stability between the pole and the battery cover, which is helpful To improve the safety performance of the battery.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Figure 2 is an exploded schematic diagram of the present invention
  • FIG. 3 is a schematic cross-sectional view of the first pole and the top cover sheet after assembly in the present invention
  • FIG. 4 is a schematic cross-sectional view of the second pole and the top cover sheet of the present invention after being assembled
  • Figure 5 is an exploded schematic diagram of the first pole of the present invention.
  • Fig. 6 is an exploded schematic diagram of the second pole in the present invention.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense.
  • it may be a fixed connection or a detachable connection.
  • integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between the two components.
  • the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
  • a battery top cover and pole assembly structure including a top cover sheet 3, a first pole 1 and a second pole 2 mounted on the top cover sheet 3, and a first pole 1
  • a first plastic part 41 is formed with glue between the top cover sheet 3 and a second plastic part 42 is formed between the second pole 2 and the top cover sheet 3 with glue.
  • the first pole 1 includes a first metal block 11 And at least one first metal nail 12 that is matched with the first metal block 11 in concave and convex, the first metal nail 12 is welded to the first metal block 11, and the second pole 2 includes a second metal block 21 and at least one and the second metal block 21 A second metal nail 22 with concave-convex fit, and the second metal nail 22 is welded to the second metal block 21.
  • the pole is generally composed of a bottom base and a cylinder connected to the bottom base, when the two materials are different, friction welding is required to form the structure, which is costly, and the pole is assembled and riveted from top to bottom, resulting in the pole
  • the risk of failure due to environmental factors increases. Therefore, the first metal nail 12 and the first metal block 11 are unevenly matched, the second metal nail 22 is unevenly matched with the second metal block 21, and the first metal nail 12 is welded to the first metal block. 11.
  • the second metal nail 22 is welded to the second metal block 21.
  • This structure is easy to produce and assemble, ensuring the stability between the metal nail and the metal block, even if the material of the metal nail and the metal block is different, such as: copper-aluminum welding , There is no need to use high-cost friction welding or welding technology, which helps to reduce the overall assembly cost of the top cover and the pole.
  • the first metal block 11 and the second metal block 21 Multiple metal nails can be welded, and the metal nails do not affect each other during the welding process, which is beneficial to improve the flow capacity.
  • the number of the first metal nail 12 and the second metal nail 22 are both two. However, the present invention is not limited to this.
  • the number of the first metal nail 12 and the second metal nail 22 can be increased according to the actual overcurrent demand; the first plastic part 41 and the first pole 1 are formed by encapsulating
  • the integrated structure ensures that the first plastic part 41 can wrap the first pole 1 to realize the electrical connection function of the first plastic part 41 and the first pole 1.
  • the second plastic part 42 and the second pole 2 are formed by encapsulation.
  • the integrated structure ensures that the second plastic part 42 wraps the second pole 2 and realizes the insulation function of the second plastic part 42 and the second pole 2.
  • the mechanical performance between the two is improved , To prevent the first pole 1 or the second pole 2 from loosening due to the influence of the external environment.
  • the bottom of the first metal block 11 is provided with a first groove 111 that cooperates with the first metal nail 12, the end of the first metal nail 12 is welded to the first groove 111, and the bottom of the second metal block 21 is provided There is a second groove 211 matched with the second metal nail 22, and the end of the second metal nail 22 is welded to the second groove 211.
  • the end of the first metal nail 12 is equivalent to being embedded in the first groove 111
  • the end of the second metal nail 22 is equivalent to being embedded in the second groove 211.
  • the firmness between the metal block and the metal nail is also better than that of friction.
  • the welded pole is better to ensure the over-current performance between the two, eliminating the need for friction welding or riveting processes, helping to reduce production costs, and improve the safety performance of the top cover; among them, along the first groove 111 and The gap formed between the first metal nails 12 is welded and the gap formed between the second groove 211 and the second metal nail 22 is welded.
  • the manufacturing process is simple and helps reduce production costs.
  • the top of the first metal block 11 is provided with a first step 112
  • the first plastic part 41 is provided with a first convex hull 411 that cooperates with the first step 112
  • the top of the second metal block 21 is provided with a second step 212.
  • the second plastic part 42 is provided with a second convex hull 421 that cooperates with the second step 212.
  • the first convex hull 411 and the second convex hull 421 function to fasten the first step 112 and the second step 212, thereby functioning to fasten the pole post, forming an integrated structure, and improving the mechanical performance between the two. Prevent the first pole 1 or the second pole 2 from loosening due to the influence of the external environment.
  • a sealing ring 5 is sleeved between the first metal nail 12 and the top cover sheet 3
  • a sealing ring 5 is sleeved between the second metal nail 22 and the top cover sheet 3
  • the bottom end of the first metal nail 12 is welded
  • the sealing ring 5 serves to fasten the first metal nail 12 or the second metal nail 22, prevent the first metal nail 12 or the second metal nail 22 from shifting, and prevent the electrolyte from corroding the first plastic part 41 through crevices.
  • the second plastic part 42 the bottom end of the first metal nail 12 is welded with a first connecting piece 61, and the bottom end of the second metal nail 22 is welded with a second connecting piece 62, which can not only prevent the first pole 1, the second pole
  • the pole 2 falls off from the top cover sheet 3, which acts as a fastening connection, and also facilitates the connection of the first pole 1 and the second pole 2 with the battery tabs;
  • the lower plastic 7 serves as the insulating top cover sheet 3 and the connection
  • the function of the sheet reduces the probability of short-circuit, and also improves the insulation performance of the top cover sheet 3 and the battery core, and prevents the electrolyte from corroding the top cover sheet 3 to cause a short circuit of the battery.
  • the first metal block 11 and the second metal block 21 are both made of aluminum or copper-aluminum composite material
  • the first metal nail 12 and the first connecting piece 61 are made of copper and aluminum welding structure
  • the second metal nail 22 and The second connecting piece 62 adopts a welding structure of aluminum and copper.
  • the negative electrode current collector sheet is made of copper foil material
  • the second metal nail 22 and the second connecting piece 62 are both materials corresponding to the negative electrode current collector sheet
  • the second metal block 21 is made of aluminum material
  • the positive current collector sheet is made of aluminum foil material
  • the first metal block 11, the first metal nail 12 and the first connecting sheet 61 are all made of aluminum material, which can ensure the battery
  • the quality of the anode is not affected, the production cost of the anode is reduced, and the strength of the connection can be improved.
  • the top cover sheet 3 is provided with a pole mounting hole 33, the first pole 1 and the second pole 2 are respectively fixed to the top cover sheet 3 through the pole mounting hole 33, and the top of the pole mounting hole 33 is formed with
  • the concave part 331, the first plastic part 41 and the second plastic part 42 are respectively accommodated in the concave part 331.
  • the design of the concave portion 331 ensures the stability between the top cover sheet 3 and the poles, eliminates the riveting process, helps reduce production costs, and improves production efficiency.
  • this design not only ensures that the battery is not functional Affected, it can also reduce the space occupied by the top cover of the battery, so that larger batteries can be placed inside the battery, thereby increasing the energy density of the battery.
  • the top cover sheet 3 is also provided with at least one of an explosion-proof valve vent hole 31 and a liquid injection hole 32, an explosion-proof valve 8 is installed between the top cover sheet 3 and the lower plastic 7, and the explosion-proof valve vent hole 31 is installed on the top
  • a protective film 9 The liquid injection hole 32 is convenient for injecting electrolyte into the battery.
  • the explosion-proof valve 8 can automatically and quickly release the battery when the battery's internal pressure rises due to overcharge, overdischarge, overcurrent, and internal short circuit of the battery, so as to avoid battery explosion.
  • the protective film 9 can prevent external impurities from entering the explosion-proof valve 8 and affecting the function of the explosion-proof valve 8.
  • the first plastic part 41 and the first pole 1 are over-molded into an integrated structure
  • the second plastic part 42 and the second pole 2 are over-molded into an integrated structure
  • the pieces 42 are all integrally formed of PPS plastic, PSU plastic or nano-plastic.
  • PPS plastics, PSU plastics, and nanoplastics all have high temperature resistance, corrosion resistance, superior mechanical properties and insulation properties, which help to improve the service life of the first plastic part 41 and the second plastic part 42, thereby improving the quality of the battery, and It has good environmental performance and fire protection efficiency, and is more in line with environmental protection requirements in the field of new energy vehicles.
  • the first plastic part 41 and the second plastic part 42 can be formed by using PPS plastic, PSU plastic or nanoplastic .
  • the first plastic part 41 is conductive plastic
  • the second plastic part 42 is insulating plastic
  • the resistance of the conductive plastic is 10 ⁇ to 30000 ⁇ .
  • the first plastic part 41 is conductive plastic
  • the second plastic part 42 is insulating plastic.
  • Explosion limit the resistance of the conductive plastic to prevent the resistance of the conductive plastic from being too large to form a protective circuit, and at the same time, to prevent the resistance of the conductive plastic from being too small, which affects the safety performance of the battery.
  • the resistance of the conductive plastic in this embodiment is 1001 ⁇ to 30000 ⁇ .
  • the resistance of the conductive plastic is further limited, so that when the battery fails, the positive pole and the negative pole are connected to form an internal protection circuit, while ensuring the safety performance of the battery.
  • a method for assembling a battery top cover and a pole includes:
  • the first pole 1 and the second pole 2 are accommodated in the recess 331 of the pole mounting hole 33, and then the first plastic part 41 is encapsulated between the first pole 1 and the top cover sheet 3, and the second The plastic part 42 is encapsulated between the second pole 2 and the top cover piece 3; at the same time, the first metal nail 12 and the first connecting piece 61 adopt a copper and aluminum welding structure, and the second metal nail 22 and the second connecting piece 62 uses a welding structure of aluminum and copper.
  • first metal nail 12 and the first metal block 11 are unevenly matched
  • second metal nail 22 is unevenly matched with the second metal block 21
  • first metal nail 12 is welded to the first metal block 11
  • second metal nail is welded to the first metal block 11.
  • 22 is welded to the second metal block 21.
  • This assembly method is easy to assemble, reducing the difficulty of assembling the pole, and at the same time, ensuring the stability between the metal nail and the metal block. Even if the material of the metal nail and the metal block is different, there is no need to use it.
  • the high-cost friction welding or welding process helps to reduce the overall assembly cost of the top cover and the pole.
  • the first metal block 11 and the second metal block 21 can be welded more.
  • the number of the first metal nail 12 and the second metal nail 22 are both two, but the first metal nail 12 and the second metal nail
  • the number of 22 can be increased according to the actual over-current demand; the design of the recess 331 ensures the stability between the top cover 3 and the poles, eliminates the riveting process, helps reduce production costs, and improves production
  • this design not only ensures that the function of the battery is not affected, but also reduces the space inside the battery that the top cover occupies, so that larger batteries can be placed inside the battery, thereby increasing the energy density of the battery; the plastic parts are tight
  • the role of the solid pole to form an integrated structure improve the mechanical performance between the two, to prevent the first pole 1 or the second pole 2 from being loosened by the external environment; the first metal nail 12 and the first connecting piece 61 adopt The welding structure of copper and aluminum, the second metal nail 22 and the second connecting piece 62 adopt the welding structure of aluminum and copper, which can ensure that the quality of the battery is not affected, reduce the production cost of the positive electrode, and

Landscapes

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

Abstract

L'invention concerne un couvercle de batterie et une structure d'assemblage de pôle, et un procédé d'assemblage y relatif. La structure d'assemblage comprend une plaque formant couvercle (3), et un premier pôle (1) et un second pôle (2) montés sur la plaque formant couvercle (3) ; un premier élément en plastique (41) est formé de façon encapsulée entre le premier pôle (1) et la plaque formant couvercle (3), et un second élément en plastique (42) est formé de façon encapsulée entre le second pôle (2) et la plaque formant couvercle (3) ; le premier pôle (1) comprend un premier bloc métallique (11) et au moins une première broche métallique (12) qui s'ajuste dans le premier bloc métallique (11), la première broche métallique (12) étant soudée au premier bloc métallique (11) ; le second pôle (2) comprend un second bloc métallique (21) et au moins une seconde broche métallique (22) qui s'ajuste dans le second bloc métallique (21), la seconde broche métallique (22) étant soudée au second bloc métallique (21). La structure décrite permet d'éviter la formation de pôles au moyen d'un soudage par friction, et de réduire les coûts de production d'un ensemble couvercle et pôle tout en améliorant la capacité globale de surintensité des pôles ; de plus, la structure augmente la stabilité entre les pôles et la plaque formant couvercle de batterie, ce qui contribue à augmenter les performances de sécurité des éléments de batterie.
PCT/CN2020/106419 2019-08-26 2020-07-31 Couvercle de batterie et structure d'assemblage de pôle, et procédé d'assemblage WO2021036685A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910789333.X 2019-08-26
CN201910789333.XA CN110581307A (zh) 2019-08-26 2019-08-26 一种电池顶盖和极柱的装配结构及装配方法

Publications (1)

Publication Number Publication Date
WO2021036685A1 true WO2021036685A1 (fr) 2021-03-04

Family

ID=68812095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/106419 WO2021036685A1 (fr) 2019-08-26 2020-07-31 Couvercle de batterie et structure d'assemblage de pôle, et procédé d'assemblage

Country Status (2)

Country Link
CN (1) CN110581307A (fr)
WO (1) WO2021036685A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110581307A (zh) * 2019-08-26 2019-12-17 江苏塔菲尔新能源科技股份有限公司 一种电池顶盖和极柱的装配结构及装配方法
CN111509150B (zh) * 2020-03-20 2023-01-17 合肥国轩高科动力能源有限公司 一种锂离子电池的电芯结构
CN215834606U (zh) * 2021-07-15 2022-02-15 江苏正力新能电池技术有限公司 一种动力电池顶盖、电池及用电装置
CN113644356B (zh) * 2021-07-28 2023-05-16 江苏正力新能电池技术有限公司 一种电池顶盖的极耳连接结构及电池

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120040240A1 (en) * 2010-08-16 2012-02-16 Duk-Jung Kim Rechargeable battery
CN205921025U (zh) * 2016-07-20 2017-02-01 深圳塔菲尔新能源科技有限公司 一种复合极柱的连接结构
CN107732044A (zh) * 2017-11-16 2018-02-23 广州中国科学院工业技术研究院 锂离子电池及其盖板结构
CN109301105A (zh) * 2018-10-30 2019-02-01 江苏塔菲尔新能源科技股份有限公司 一种动力电池顶盖的装配结构及其装配方法
CN209249605U (zh) * 2018-10-30 2019-08-13 江苏塔菲尔新能源科技股份有限公司 一种动力电池顶盖极柱包胶结构
CN110581307A (zh) * 2019-08-26 2019-12-17 江苏塔菲尔新能源科技股份有限公司 一种电池顶盖和极柱的装配结构及装配方法
CN210379300U (zh) * 2019-08-26 2020-04-21 江苏塔菲尔新能源科技股份有限公司 一种电池顶盖和极柱的装配结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6762118B2 (en) * 2000-10-10 2004-07-13 Walsin Advanced Electronics Ltd. Package having array of metal pegs linked by printed circuit lines
DE102014220327A1 (de) * 2014-10-07 2016-04-07 Bae Batterien Gmbh Vorrichtung zum elektrischen Verbinden von Batteriezellen, Polschraube und Batterie mit elektrisch verbundenen Batteriezellen
CN206059541U (zh) * 2016-08-31 2017-03-29 山东威能环保电源科技股份有限公司 一种防过充过流的锂离子电池盖板组件
CN108695451B (zh) * 2017-04-07 2021-02-09 宁德时代新能源科技股份有限公司 二次电池的顶盖组件以及二次电池

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120040240A1 (en) * 2010-08-16 2012-02-16 Duk-Jung Kim Rechargeable battery
CN205921025U (zh) * 2016-07-20 2017-02-01 深圳塔菲尔新能源科技有限公司 一种复合极柱的连接结构
CN107732044A (zh) * 2017-11-16 2018-02-23 广州中国科学院工业技术研究院 锂离子电池及其盖板结构
CN109301105A (zh) * 2018-10-30 2019-02-01 江苏塔菲尔新能源科技股份有限公司 一种动力电池顶盖的装配结构及其装配方法
CN209249605U (zh) * 2018-10-30 2019-08-13 江苏塔菲尔新能源科技股份有限公司 一种动力电池顶盖极柱包胶结构
CN110581307A (zh) * 2019-08-26 2019-12-17 江苏塔菲尔新能源科技股份有限公司 一种电池顶盖和极柱的装配结构及装配方法
CN210379300U (zh) * 2019-08-26 2020-04-21 江苏塔菲尔新能源科技股份有限公司 一种电池顶盖和极柱的装配结构

Also Published As

Publication number Publication date
CN110581307A (zh) 2019-12-17

Similar Documents

Publication Publication Date Title
WO2021218844A1 (fr) Structure d'assemblage de couvercle supérieur de batterie
WO2021036685A1 (fr) Couvercle de batterie et structure d'assemblage de pôle, et procédé d'assemblage
WO2021179525A1 (fr) Structure de couvercle supérieur de batterie et procédé d'assemblage
CN210272439U (zh) 一种电池顶盖的装配结构
CN211265533U (zh) 一种电池顶盖装配结构
CN212062562U (zh) 一种电池顶盖极柱的加强结构及电池
CN106532099B (zh) 一种动力电池及其顶盖
CN218677502U (zh) 动力电池极柱的焊接结构
CN210379300U (zh) 一种电池顶盖和极柱的装配结构
CN219180634U (zh) 动力电池盖板和电池
CN212625810U (zh) 电芯盖板、电芯及电池包
CN110137393B (zh) 一种电池盖帽组件及电池
CN211350696U (zh) 一种圆柱锂离子电池结构
CN113131054A (zh) 一种动力电池极柱封装结构、顶盖、动力电池
CN114447413B (zh) 一种电池盖板以及电池
CN215418510U (zh) 一种二次电池的集成极柱
CN216015523U (zh) 电芯的顶盖组件和电芯
CN215496876U (zh) 一种电池顶盖组件、电池外壳及电池包
CN211045494U (zh) 一种电池顶盖绝缘结构
CN201877491U (zh) 一种新型大容量锂离子电池
CN211670219U (zh) 一种电池顶盖结构
CN201540909U (zh) 一种锂电池盖板组件及使用该组件的锂电池
CN210379124U (zh) 一种外置ptc的圆柱形电池
CN111416069A (zh) 一种极柱整体注塑的电池盖板结构
CN201616464U (zh) 低电阻的电池盖组

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20856388

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 23.08.2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20856388

Country of ref document: EP

Kind code of ref document: A1