WO2021036685A1 - Battery cover and pole assembly structure and assembly method - Google Patents

Battery cover and pole assembly structure and assembly method Download PDF

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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
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WO
WIPO (PCT)
Prior art keywords
pole
metal
top cover
metal block
nail
Prior art date
Application number
PCT/CN2020/106419
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French (fr)
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
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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/en

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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
    • H01M10/052—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

Abstract

A battery cover and pole assembly structure, and an assembly method therefor. The assembly structure comprises a cover plate (3), and a first pole (1) and a second pole (2) mounted on the cover plate (3); a first plastic element (41) is encapsulatingly formed between the first pole (1) and the cover plate (3), and a second plastic element (42) is encapsulatingly formed between the second pole (2) and the cover plate (3); the first pole (1) comprises a first metal block (11) and at least one first metal pin (12) that fits into the first metal block (11), the first metal pin (12) being welded to the first metal block (11); the second pole (2) comprises a second metal block (21) and at least one second metal pin (22) that fits into the second metal block (21), the second metal pin (22) being welded to the second metal block (21). The described structure omits formation of poles by means of friction welding, and can decrease production costs for a cover and pole assembly, as well as improve overall overcurrent capability of the poles; in addition, the structure increases stability between the poles and the battery cover plate, helping to increase battery cell safety performance.

Description

一种电池顶盖和极柱的装配结构及装配方法Assembly structure and assembly method of battery top cover and pole 技术领域Technical field
本发明属于电池生产制造的技术领域，具体涉及一种电池顶盖和极柱的装配结构及装配方法。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.
背景技术Background technique
随着现代社会的发展和人们环保意识的增强，越来越多的设备选择以锂电池作为电源，如手机、笔记本电脑、电动工具和电动汽车等等，这为锂电池的应用与发展提供了广阔的空间。其中，电动工具和电动汽车等所使用的锂电池一般称之为动力电池。其中，动力电池极柱与顶盖的结构及制造工艺的好坏直接影响锂离子电池电芯乃至整个电池的性能。With the development of modern society and the enhancement of people’s awareness of environmental protection, more and more devices choose lithium batteries as their power source, such as mobile phones, notebook computers, power tools and electric cars, etc., which provides the application and development of lithium batteries. A vast space. Among them, lithium batteries used in electric tools and electric cars are generally called power batteries. Among them, 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.
其中，中国专利文献公开了一种极柱凸起电池盖板(公开号：CN 208570681 U)，包括：包括电池盖板，所述电池盖板顶部左右两端分别装有正极组件和负极组件；所述电池盖板由上盖板和下盖板扣合而成；所述上盖板和下盖板左右两侧分别设置有正极安装孔和负极安装孔，所述下盖板的左右两侧与中间防爆绝缘装置可拆分装配。上述的方案在一定程度上防止电池的膨胀，但是发明人发现这种方案至少还存在以下缺陷：第一，结构复杂且不易拆卸和安装；第二，极柱由底基座和圆柱构成，需采用摩擦焊工艺连接，导致成本上升；第三，极柱和电池盖板之间稳固性较差，容易受环境等因素失效，安全风险较大。Among them, 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. The above 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.
发明内容Summary of the invention
本发明的目的之一在于：针对现有技术的不足，提供一种电池顶盖和极柱的装配结构，省去通过摩擦焊形成极柱，能够降低顶盖和极柱装配的生产成本，还能提高极柱整体的过流能力，同时，提高极柱和电池盖板之间稳固性，有助于提高电芯的安全性能。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.
为了实现上述目的，本发明采用如下技术方案：In order to achieve the above objectives, the present invention adopts the following technical solutions:
一种电池顶盖和极柱的装配结构，包括顶盖片、安装于所述顶盖片的第一极柱及第二极柱，所述第一极柱和所述顶盖片之间包胶形成有第一塑胶件，所述第二极柱和所述顶盖片之间包胶形成有第二塑胶件，所述第一极柱包括第一金属块及至少一个与所述第一金属块凹凸配合的第一金属钉，所述第一金属钉焊接于所述第一金属块，所述第二极柱包括第二金属块及至少一个与所述第二金属块凹凸配合的第二金属钉，所述第二金属钉焊接于所述第二金属块。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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一金属块的底部设置有与所述第一金属钉配合的第一凹槽，所述第一金属钉的端部焊接于所述第一凹槽，所述第二金属块的底部设置有与所述第二金属钉配合的第二凹槽，所述第二金属钉的端部焊接于所述第二凹槽。As an improvement of the assembly structure of the battery top cover and the pole according to the present invention, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一金属块的顶部设置有第一台阶，所述第一塑胶件设置有与所述第一台阶配合的第一凸包，所述第二金属块的顶部设置有第二台阶，所述第二塑胶件设置有与所述第二台阶配合的第二凸包。As an improvement of the assembly structure of the battery top cover and the pole of the present invention, the top of the first metal block is provided with a first step, and the first plastic part is provided with the first step. For the mating first convex hull, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述顶盖片上还设置有防爆阀透气孔和注液孔中的至少一种，所述顶盖片和所述下塑胶之间安装有防爆阀，所述防爆阀透气孔顶部安装有保护膜。As an improvement of the assembly structure of the battery top cover and the pole of the present invention, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一金属钉和所述顶盖片之间套设有密封圈，所述第二金属钉和所述顶盖片之间套设有密封圈，所述第一金属钉的底端焊接有第一连接片，所述第二金属钉的底端焊接有第二连接片，所述第一连接片和所述第二连接片与所述顶盖片之间设置有下塑胶。As an improvement of the assembly structure of the battery top cover and the pole according to the present invention, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一金属块和所述第二金属块均采用铝或铜铝复合材料制成，所述第一金属钉和所 述第一连接片采用铜与铝的焊接结构，所述第二金属钉和所述第二连接片采用铝与铜的焊接结构。As an improvement of the assembly structure of the battery top cover and the pole of the present invention, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述顶盖片设置有极柱安装孔，所述第一极柱和所述第二极柱分别穿过所述极柱安装孔固定于所述顶盖片，所述极柱安装孔的顶部形成有凹部，所述第一塑胶件和所述第二塑胶件分别容置于所述凹部。As an improvement of the assembly structure of the battery top cover and the pole according to the present invention, 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.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一塑胶件和所述第一极柱通过包胶注塑成一体结构，所述第二塑胶件和所述第二极柱通过包胶注塑成一体结构，所述第一塑胶件和所述第二塑胶件均为由PPS塑料、PSU塑料或纳米塑胶一体成型结构。As an improvement of the assembly structure of the battery top cover and the pole according to the present invention, the first plastic part and the first pole are molded into an integral structure by overmolding, and the second plastic part and The second pole is molded into an integral structure by overmolding, and the first plastic part and the second plastic part are both integrally formed of PPS plastic, PSU plastic or nano-plastic.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述第一塑胶件为导电塑胶，所述第二塑胶件为绝缘塑胶，所述导电塑胶的电阻为10Ω～30000Ω。As an improvement of the assembly structure of the battery top cover and the pole according to the present invention, the first plastic part is conductive plastic, the second plastic part is insulating plastic, and the resistance of the conductive plastic is 10Ω ~30000Ω.
作为本发明所述的一种电池顶盖和极柱的装配结构的一种改进，所述导电塑胶的电阻为1001Ω～30000Ω。As an improvement of the assembly structure of the battery top cover and the pole of the present invention, the electrical resistance of the conductive plastic is 1001Ω-30000Ω.
本发明的目的之二在于提供一种电池顶盖和极柱的装配方法，包括：The second objective of the present invention is to provide a method for assembling the battery top cover and the pole, including:
将至少一个第一金属钉与第一金属块凹凸配合，然后将所述第一金属钉焊接于所述第一金属块，形成第一极柱；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;
将至少一个第二金属钉与第二金属块凹凸配合，然后将所述第二金属钉焊接于所述第二金属块，形成第二极柱；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;
将所述第一极柱和所述第二极柱安装于顶盖片，然后将第一塑胶件包胶于所述第一极柱和所述顶盖片之间，将第二塑胶件包胶于所述第二极柱和所述顶盖片之间。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.
需要说明的是：本发明的装配方法中，采用第一金属钉与第一金属块凹凸配合，第二金属钉与第二金属块凹凸配合，第一金属钉焊接于第一金属块，第 二金属钉焊接于第二金属块，这种装配方法易于组装，降低极柱的装配难度，同时，保证金属钉和金属块之间的稳固性，即使金属钉和金属块的材料不同，也无需采用高成本的摩擦焊或熔接的工艺，有助于降低顶盖和极柱的整体装配成本，此外，相比具有圆柱结构的极柱，第一金属块和第二金属块均能焊接多个金属钉，且金属钉之间在焊接过程中互不影响，有利于提高过流能力，其中，第一金属钉和第二金属钉的数量均为两个，但第一金属钉和第二金属钉的数量可以根据实际的过流需求而增加。It should be noted that: in the assembling method of the present invention, 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. This assembly method is easy to assemble, reducing the difficulty of assembly of 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. In addition, compared to the pole with a cylindrical structure, 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. Among them, 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.
本发明的有益效果在于，本发明包括顶盖片、安装于所述顶盖片的第一极柱及第二极柱，所述第一极柱和所述顶盖片之间包胶形成有第一塑胶件，所述第二极柱和所述顶盖片之间包胶形成有第二塑胶件，所述第一极柱包括第一金属块及至少一个与所述第一金属块凹凸配合的第一金属钉，所述第一金属钉焊接于所述第一金属块，所述第二极柱包括第二金属块及至少一个与所述第二金属块凹凸配合的第二金属钉，所述第二金属钉焊接于所述第二金属块。由于极柱一般由底基座和连接在底基座上的圆柱构成，两者材料不同时，需摩擦焊形成该结构，成本较高，且极柱是从上往下装配铆接，导致极柱因环境因素失效的风险增大，因此，第一金属钉与第一金属块凹凸配合，第二金属钉与第二金属块凹凸配合，第一金属钉焊接于第一金属块，第二金属钉焊接于第二金属块，这种结构易于生产和组装，保证金属钉和金属块之间的稳固性，即使金属钉和金属块的材料不同，如：铜铝焊接，也无需采用高成本的摩擦焊或熔接的工艺，有助于降低顶盖和极柱的整体装配成本，此外，相比具有圆柱结构的极柱，第一金属块11和第二金属块21均能焊接多个金属钉，且金属钉之间在焊接过程中互不影响，有利于提高极柱过流能力，其中，第一金属钉和第二金属钉的数量均为两个，第一金属钉和第二金属钉的数量可以根据实际的过流需求而增加；第一塑胶件和第一极柱通过包胶成一体结构，确保第一塑胶件能够把第一极柱包裹，实现第一塑胶件和第一极柱的电连接功能，第二塑胶件和第二极柱通过 包胶成一体结构，确保第二塑胶件将第二极柱包裹，实现第二塑胶件和第二极柱的绝缘功能，同时，由于采用包胶的方式，提高两者之间的机械性能，防止第一极柱或第二极柱受外部环境影响发生松动。本发明省去通过摩擦焊形成极柱，能够降低顶盖和极柱装配的生产成本，还能提高极柱整体的过流能力，同时，提高极柱和电池盖板之间稳固性，有助于提高电芯的安全性能。The beneficial effect of the present invention is that 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, and 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. Since 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. Welded to the second 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. In addition, compared to the pole with a cylindrical structure, the first metal block 11 and the second metal block 21 can both weld multiple metal nails. In addition, the metal nails do not affect each other during the welding process, which is beneficial to improve the current flow capacity of the pole. Among them, 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. At the same time, 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.
附图说明Description of the drawings
图1为本发明的结构示意图；Figure 1 is a schematic diagram of the structure of the present invention;
图2为本发明的分解示意图；Figure 2 is an exploded schematic diagram of the present invention;
图3为本发明中第一极柱和顶盖片组装后的剖面示意图；3 is a schematic cross-sectional view of the first pole and the top cover sheet after assembly in the present invention;
图4为本发明的第二极柱和顶盖片组装后的剖面示意图；4 is a schematic cross-sectional view of the second pole and the top cover sheet of the present invention after being assembled;
图5为本发明的第一极柱的分解示意图；Figure 5 is an exploded schematic diagram of the first pole of the present invention;
图6为本发明中第二极柱的分解示意图；Fig. 6 is an exploded schematic diagram of the second pole in the present invention;
其中：1-第一极柱；2-第二极柱；3-顶盖片；11-第一金属块；12-第一金属钉；111-第一凹槽；112-第一台阶；21-第二金属块；22-第二金属钉；211-第二凹槽；212-第二台阶；31-防爆阀透气孔；32-注液孔；33-极柱安装孔；331-凹部；41-第一塑胶件；411-第一凸包；42-第二塑胶件；421-第二凸包；5-密封圈；61-第一连接片；62-第二连接片；7-下塑胶；8-防爆阀；9-保护膜。Among them: 1-first pole; 2-second pole; 3-top cover sheet; 11-first metal block; 12-first metal nail; 111-first groove; 112-first step; 21 -Second metal block; 22-Second metal nail; 211-Second groove; 212-Second step; 31-Explosion-proof valve ventilation hole; 32-Injection hole; 33-Pole mounting hole; 331-Concavity; 41-first plastic part; 411-first convex hull; 42-second plastic part; 421-second convex hull; 5-sealing ring; 61-first connecting piece; 62-second connecting piece; 7-down Plastic; 8-Explosion-proof valve; 9-Protective film.
具体实施方式detailed description
如在说明书及权利要求当中使用了某些词汇来指称特定组件。本领域技术人员应可理解，硬件制造商可能会用不同名词来称呼同一个组件。本说明书及权利要求并不以名称的差异来作为区分组件的方式，而是以组件在功能上的差异来作为区分的准则。如在通篇说明书及权利要求当中所提及的“包含”为一开放式用语，故应解释成“包含但不限定于”。“大致”是指在可接受的误差范围内，本领域技术人员能够在一定误差范围内解决技术问题，基本达到技术效果。For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. If the "include" mentioned in the entire specification and claims is an open term, it should be interpreted as "include but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、 “左”、“右”、水平”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", and horizontal are based on the accompanying drawings. The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to the present invention. limits.
在发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection. Or 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. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
以下结合附图对本发明作进一步详细说明，但不作为对本发明的限定。The present invention will be further described in detail below in conjunction with the accompanying drawings, but it is not intended to limit the present invention.
实施例1Example 1
如图1～6所示，一种电池顶盖和极柱的装配结构，包括顶盖片3、安装于顶盖片3的第一极柱1及第二极柱2，第一极柱1和顶盖片3之间包胶形成有第一塑胶件41，第二极柱2和顶盖片3之间包胶形成有第二塑胶件42，第一极柱1包括第一金属块11及至少一个与第一金属块11凹凸配合的第一金属钉12，第一金属钉12焊接于第一金属块11，第二极柱2包括第二金属块21及至少一个与第二金属块21凹凸配合的第二金属钉22，第二金属钉22焊接于第二金属块21。由于极柱一般由底基座和连接在底基座上的圆柱构成，两者材料不同时，需摩擦焊形成该结构，成本较高，且极柱是从上往下装配铆接，导致极柱因环境因素失效的风险增大，因此，第一金属钉12与第一金属块11凹凸配合，第二金属钉22与第二金属块21凹凸配合，第一金属钉12焊接于第一金属块11，第二金属钉22焊接于第二金属块21，这种结构易于生产和组装，保证金属钉和金属块之间的稳固性，即使金属钉和金属块的材料不同，如：铜铝焊接，也无需采用高成本的摩擦焊或熔接的工艺，有助于降低顶盖和极柱的整体装配成本，此外，相比具有圆柱结构的极柱，第一金属块11和第二金属块21均能焊接多个金属钉，且金属钉之 间在焊接过程中互不影响，有利于提高过流能力，于本实施例中，第一金属钉12和第二金属钉22的数量均为两个，但本发明的不以此为限，第一金属钉12和第二金属钉22的数量可以根据实际的过流需求而增加；第一塑胶件41和第一极柱1通过包胶成一体结构，确保第一塑胶件41能够把第一极柱1包裹，实现第一塑胶件41和第一极柱1的电连接功能，第二塑胶件42和第二极柱2通过包胶成一体结构，确保第二塑胶件42将第二极柱2包裹，实现第二塑胶件42和第二极柱2的绝缘功能，同时，由于采用包胶的方式，提高两者之间的机械性能，防止第一极柱1或第二极柱2受外部环境影响发生松动。As shown in Figures 1 to 6, 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. Since 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. In addition, compared with the pole with a cylindrical structure, 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. In this embodiment, 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. At the same time, due to the way of encapsulation, 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.
优选的，第一金属块11的底部设置有与第一金属钉12配合的第一凹槽111，第一金属钉12的端部焊接于第一凹槽111，第二金属块21的底部设置有与第二金属钉22配合的第二凹槽211，第二金属钉22的端部焊接于第二凹槽211。第一金属钉12的端部相当于嵌入第一凹槽111内，第二金属钉22的端部相当于嵌入第二凹槽211内，金属块和金属钉之间的牢固性能也比采用摩擦焊的极柱更好，确保两者之间的过流性能，省去了摩擦焊或铆接的工序，有助于降低生产成本，提高顶盖的安全性能；其中，沿第一凹槽111和第一金属钉12之间形成的缝隙进行焊接，和沿第二凹槽211和第二金属钉22之间形成的缝隙进行焊接，制作工艺简单，有助于降低生产成本。Preferably, 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, and 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.
优选的，第一金属块11的顶部设置有第一台阶112，第一塑胶件41设置有与第一台阶112配合的第一凸包411，第二金属块21的顶部设置有第二台阶212，第二塑胶件42设置有与第二台阶212配合的第二凸包421。第一凸包411和第二凸包421起到紧固第一台阶112和第二台阶212的作用，从而起到紧固极柱的作用，形成一体结构，提高两者之间的机械性能，防止第一极柱1或第二极柱2受外部环境影响发生松动。Preferably, 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, and 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.
优选的，第一金属钉12和顶盖片3之间套设有密封圈5，第二金属钉22和顶盖片3之间套设有密封圈5，第一金属钉12的底端焊接有第一连接片61，第二金 属钉22的底端焊接有第二连接片62，第一连接片61和第二连接片62与顶盖片3之间设置有下塑胶7。密封圈5起到紧固第一金属钉12或第二金属钉22的作用，防止第一金属钉12或第二金属钉22发生移位，此外，防止电解液通过缝隙腐蚀第一塑胶件41和第二塑胶件42；第一金属钉12的底端焊接有第一连接片61，第二金属钉22的底端焊接有第二连接片62，不仅能够防止第一极柱1、第二极柱2从顶盖片3脱落，起到紧固连接的作用，还便于第一极柱1和第二极柱2与电池极耳进行连接；下塑胶7起到绝缘顶盖片3和连接片的作用，降低发生短路的概率，还提高顶盖片3与电芯的绝缘性能，防止电解液腐蚀顶盖片3导致电池短路。Preferably, 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, and the bottom end of the first metal nail 12 is welded There is a first connecting piece 61, a second connecting piece 62 is welded to the bottom end of the second metal nail 22, and a lower plastic 7 is provided between the first connecting piece 61 and the second connecting piece 62 and the top cover piece 3. 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. And 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.
优选的，第一金属块11和第二金属块21均采用铝或铜铝复合材料制成，第一金属钉12和第一连接片61采用铜与铝的焊接结构，第二金属钉22和第二连接片62采用铝与铜的焊接结构。由于铝材料比铜材料的价格更低，当负极集流片为铜箔材料，第二金属钉22和第二连接片62均为负极集流片对应的材料，第二金属块21为铝材料，能够保证电池的质量不受影响，降低负极的生产成本；当正极集流片为铝箔材料，第一金属块11、第一金属钉12和第一连接片61均采用铝材料，能够保证电池的质量不受影响，降低正极的生产成本，还能提高连接的强度。Preferably, 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, and the second metal nail 22 and The second connecting piece 62 adopts a welding structure of aluminum and copper. Since the price of aluminum material is lower than that of copper material, when 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, and the second metal block 21 is made of aluminum material , Can ensure that the quality of the battery is not affected, and reduce the production cost of the negative electrode; when 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.
优选的，顶盖片3设置有极柱安装孔33，第一极柱1和第二极柱2分别穿过极柱安装孔33固定于顶盖片3，极柱安装孔33的顶部形成有凹部331，第一塑胶件41和第二塑胶件42分别容置于凹部331。采用凹部331的设计，保证了顶盖片3和各极柱间的稳固性，省去了铆接的工序，有助于降低生产成本，提高生产效率，此外，这种设计不仅保证电池的功能不受影响，还能减少顶盖占用电池内部的空间，使电池内部能够放置更大的电芯，从而提高电池的能量密度。Preferably, 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. In addition, 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.
优选的，顶盖片3上还设置有防爆阀透气孔31和注液孔32中的至少一种，顶盖片3和下塑胶7之间安装有防爆阀8，防爆阀透气孔31顶部安装有保护膜9。注液孔32便于将电解液注入到电池内部，防爆阀8能够在电池由于过充、过放、过 流及电池内部短路导致电池内压上升时，使电池自动快速泄压，避免电池爆炸导致安全事故的发生，保护膜9能够防止外界杂质进入到防爆阀8内，影响防爆阀8的功能。Preferably, 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 There is 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. In the event of a safety accident, 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.
优选的，第一塑胶件41和第一极柱1通过包胶注塑成一体结构，第二塑胶件42和第二极柱2通过包胶注塑成一体结构，第一塑胶件41和第二塑胶件42均为由PPS塑料、PSU塑料或纳米塑胶一体成型结构。PPS塑料、PSU塑料、纳米塑料均具有耐高温、耐腐蚀、优越的机械性能和绝缘性能，有助于提高第一塑胶件41和第二塑胶件42的使用寿命，从而提高电池的质量，而且具有良好的环保性能和防火功效，更符合新能源汽车领域的环保要求，可根据电池的结构和成本的需要，采用PPS塑料、PSU塑料或纳米塑料形成第一塑胶件41和第二塑胶件42。Preferably, 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 first plastic part 41 and the second plastic 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. According to the structure and cost of the battery, the first plastic part 41 and the second plastic part 42 can be formed by using PPS plastic, PSU plastic or nanoplastic .
优选的，第一塑胶件41为导电塑胶，第二塑胶件42为绝缘塑胶，导电塑胶的电阻为10Ω～30000Ω。第一塑胶件41为导电塑胶，第二塑胶件42为绝缘塑胶，能够在电池内部发生高温、高压时，通过翻转片正常翻转，实现正极柱和负极柱连接，即形成内部保护回路，防止电池爆炸；限定导电塑胶的电阻，防止导电塑胶的电阻过大，无法形成保护回路，同时，防止导电塑胶的电阻过小，影响电池的安全性能。Preferably, the first plastic part 41 is conductive plastic, the second plastic part 42 is insulating plastic, and the resistance of the conductive plastic is 10Ω to 30000Ω. The first plastic part 41 is conductive plastic, and the second plastic part 42 is insulating plastic. When high temperature and high pressure occur inside the battery, the positive pole and the negative pole can be connected through the flip sheet to connect the positive pole and the negative pole to prevent the battery. 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.
实施例2Example 2
与实施例1不同的是：本实施例的导电塑胶的电阻为1001Ω～30000Ω。进一步限定导电塑胶的电阻，满足在电池故障时，正极柱和负极柱连接，形成内部保护回路，同时保证电池的安全性能。The difference from Embodiment 1 is that the resistance of the conductive plastic in this embodiment is 1001Ω to 30000Ω. 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.
其他结构与实施例1相同，这里不再赘述。The other structure is the same as that of Embodiment 1, and will not be repeated here.
实施例3Example 3
如图1～6所示，一种电池顶盖和极柱的装配方法，包括：As shown in Figures 1 to 6, a method for assembling a battery top cover and a pole includes:
将至少一个第一金属钉12嵌入第一金属块11底部的第一凹槽111，然后沿第一凹槽111和第一金属钉12之间形成的缝隙进行焊接，从而将第一金属钉12焊接 于第一金属块11，形成第一极柱1；Insert at least one first metal nail 12 into the first groove 111 at the bottom of the first metal block 11, and then perform welding along the gap formed between the first groove 111 and the first metal nail 12, thereby connecting the first metal nail 12 Welded to the first metal block 11 to form the first pole 1;
将至少一个第二金属钉22嵌入第二金属块21底部的第二凹槽211，然后沿第二凹槽211和第二金属钉22之间形成的缝隙进行焊接，从而将第二金属钉22焊接于第二金属块21，形成第二极柱2；Insert at least one second metal nail 22 into the second groove 211 at the bottom of the second metal block 21, and then perform welding along the gap formed between the second groove 211 and the second metal nail 22, so that the second metal nail 22 Welded to the second metal block 21 to form the second pole 2;
将第一极柱1和第二极柱2容置于极柱安装孔33的凹部331，然后将第一塑胶件41包胶于第一极柱1和顶盖片3之间，将第二塑胶件42包胶于第二极柱2和顶盖片3之间；同时，第一金属钉12和第一连接片61采用铜与铝的焊接结构，第二金属钉22和第二连接片62采用铝与铜的焊接结构。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.
需要说明的是：第一金属钉12与第一金属块11凹凸配合，第二金属钉22与第二金属块21凹凸配合，第一金属钉12焊接于第一金属块11，第二金属钉22焊接于第二金属块21，这种装配方法易于组装，降低极柱的装配难度，同时，保证金属钉和金属块之间的稳固性，即使金属钉和金属块的材料不同，也无需采用高成本的摩擦焊或熔接的工艺，有助于降低顶盖和极柱的整体装配成本，此外，相比具有圆柱结构的极柱，第一金属块11和第二金属块21均能焊接多个金属钉，沿第一凹槽111和第一金属钉12之间形成的缝隙进行焊接，和沿第二凹槽211和第二金属钉22之间形成的缝隙进行焊接，制作工艺简单，且金属钉之间在焊接过程中互不影响，有利于提高过流能力，其中，第一金属钉12和第二金属钉22的数量均为两个，但第一金属钉12和第二金属钉22的数量可以根据实际的过流需求而增加；采用凹部331的设计，保证了顶盖片3和各极柱间的稳固性，省去了铆接的工序，有助于降低生产成本，提高生产效率，此外，这种设计不仅保证电池的功能不受影响，还能减少顶盖占用电池内部的空间，使电池内部能够放置更大的电芯，从而提高电池的能量密度；塑胶件起到紧固极柱的作用，形成一体结构，提高两者之间的机械性能，防止第一极柱1或第二极柱2受外部环境影响发生松动；第一金属钉12和第一连接片61采用铜与铝的焊接结构，第二金属钉22和第二连接片62采用铝与铜的焊接结构，能够保证电池的质量不受 影响，降低正极的生产成本，还能提高连接的强度。It should be noted that 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, the first metal nail 12 is welded to the first metal block 11, and the 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. In addition, compared to the pole with a cylindrical structure, the first metal block 11 and the second metal block 21 can be welded more. Two metal nails, welded along the gap formed between the first groove 111 and the first metal nail 12, and welded along the gap formed between the second groove 211 and the second metal nail 22, the manufacturing process is simple, and The metal nails do not affect each other during the welding process, which is beneficial to improve the flow capacity. Among them, 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 In addition, 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 increase the strength of the connection.
根据上述说明书的揭示和教导，本发明所属领域的技术人员还能够对上述实施方式进行变更和修改。因此，本发明并不局限于上述的具体实施方式，凡是本领域技术人员在本发明的基础上所作出的任何显而易见的改进、替换或变型均属于本发明的保护范围。此外，尽管本说明书中使用了一些特定的术语，但这些术语只是为了方便说明，并不对本发明构成任何限制。Based on the disclosure and teaching of the foregoing specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the foregoing embodiments. Therefore, the present invention is not limited to the above-mentioned specific embodiments, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present invention shall fall within the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (10)

  1. 一种电池顶盖和极柱的装配结构，其特征在于：包括顶盖片(3)、安装于所述顶盖片(3)的第一极柱(1)及第二极柱(2)，所述第一极柱(1)和所述顶盖片(3)之间包胶形成有第一塑胶件(41)，所述第二极柱(2)和所述顶盖片(3)之间包胶形成有第二塑胶件(42)，所述第一极柱(1)包括第一金属块(11)及至少一个与所述第一金属块(11)凹凸配合的第一金属钉(12)，所述第一金属钉(12)焊接于所述第一金属块(11)，所述第二极柱(2)包括第二金属块(21)及至少一个与所述第二金属块(21)凹凸配合的第二金属钉(22)，所述第二金属钉(22)焊接于所述第二金属块(21)。A battery top cover and pole assembly structure, which is characterized in that it comprises a top cover piece (3), a first pole (1) and a second pole (2) mounted on the top cover piece (3) , A first plastic part (41) is formed between the first pole (1) and the top cover sheet (3), the second pole (2) and the top cover sheet (3) ) Is encapsulated with a second plastic part (42). The first pole (1) includes a first metal block (11) and at least one first metal block (11) that is concave-convex matched with the first metal block (11). Metal nails (12), the first metal nails (12) are welded to the first metal block (11), the second pole (2) includes a second metal block (21) and at least one The second metal block (21) is a second metal nail (22) with concave-convex matching, and the second metal nail (22) is welded to the second metal block (21).
  2. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一金属块(11)的底部设置有与所述第一金属钉(12)配合的第一凹槽(111)，所述第一金属钉(12)的端部焊接于所述第一凹槽(111)，所述第二金属块(21)的底部设置有与所述第二金属钉(22)配合的第二凹槽(211)，所述第二金属钉(22)的端部焊接于所述第二凹槽(211)。The assembly structure of the battery top cover and the pole according to claim 1, characterized in that: the bottom of the first metal block (11) is provided with a first metal nail (12) matching with the first metal nail (12). Groove (111), 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 with the second metal nail (22) A matched second groove (211), and the end of the second metal nail (22) is welded to the second groove (211).
  3. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一金属块(11)的顶部设置有第一台阶(112)，所述第一塑胶件(41)设置有与所述第一台阶(112)配合的第一凸包(411)，所述第二金属块(21)的顶部设置有第二台阶(212)，所述第二塑胶件(42)设置有与所述第二台阶(212)配合的第二凸包(421)。The assembly structure of the battery top cover and the pole according to claim 1, wherein the top of the first metal block (11) is provided with a first step (112), and the first plastic part ( 41) is provided with a first convex hull (411) matching the first step (112), the top of the second metal block (21) is provided with a second step (212), the second plastic part ( 42) A second convex hull (421) that is matched with the second step (212) is provided.
  4. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述顶盖片(3)设置有极柱安装孔(33)，所述第一极柱(1)和所述第二极柱(2)分别穿过所述极柱安装孔(33)固定于所述顶盖片(3)，所述极柱安装孔(33)的顶部形成有凹部(331)，所述第一塑胶件(41)和所述第二塑胶件(42)分别容置于所述凹部(331)。The assembly structure of a battery top cover and a pole according to claim 1, wherein the top cover sheet (3) is provided with a pole mounting hole (33), and the first pole (1) And the second pole (2) respectively pass through the pole mounting hole (33) and fixed to the top cover sheet (3), and a recess (331) is formed on the top of the pole mounting hole (33) , The first plastic part (41) and the second plastic part (42) are respectively accommodated in the concave portion (331).
  5. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一金属钉(12)和所述顶盖片(3)之间套设有密封圈(5)，所述第二金属钉(22)和所 述顶盖片(3)之间套设有密封圈(5)，所述第一金属钉(12)的底端焊接有第一连接片(61)，所述第二金属钉(22)的底端焊接有第二连接片(62)，所述第一连接片(61)和所述第二连接片(62)与所述顶盖片(3)之间设置有下塑胶(7)。The assembly structure of the battery top cover and the pole according to claim 1, characterized in that: 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 piece (3), and a first connecting piece ( 61), the bottom end of the second metal nail (22) is welded with a second connecting piece (62), and the first connecting piece (61) and the second connecting piece (62) are connected to the top cover piece A lower plastic (7) is arranged between (3).
  6. 如权利要求5所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一金属块(11)和所述第二金属块(21)均采用铝或铜铝复合材料制成，所述第一金属钉(12)和所述第一连接片(61)采用铜与铝的焊接结构，所述第二金属钉(22)和所述第二连接片(62)采用铝与铜的焊接结构。The assembly structure of the battery top cover and the pole according to claim 5, wherein the first metal block (11) and the second metal block (21) are made of aluminum or copper-aluminum composite materials. Manufactured, the first metal nail (12) and the first connecting piece (61) adopt a welding structure of copper and aluminum, and the second metal nail (22) and the second connecting piece (62) adopt Welded structure of aluminum and copper.
  7. 如权利要求5所述的一种电池顶盖和极柱的装配结构，其特征在于：所述顶盖片(3)上还设置有防爆阀透气孔(31)和注液孔(32)中的至少一种，所述顶盖片(3)和所述下塑胶(7)之间安装有防爆阀(8)，所述防爆阀透气孔(31)顶部安装有保护膜(9)。A battery top cover and pole assembly structure according to claim 5, characterized in that: the top cover sheet (3) is also provided with an explosion-proof valve vent (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 a protective film (9) is installed on the top of the vent hole (31) of the explosion-proof valve.
  8. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一塑胶件(41)和所述第一极柱(1)通过包胶注塑成一体结构，所述第二塑胶件(42)和所述第二极柱(2)通过包胶注塑成一体结构，所述第一塑胶件(41)和所述第二塑胶件(42)均为由PPS塑料、PSU塑料或纳米塑胶一体成型结构。The assembly structure of the battery top cover and the pole according to claim 1, wherein the first plastic part (41) and the first pole (1) are overmolded into an integral structure, The second plastic part (42) and the second pole (2) are molded into an integral structure by overmolding, and the first plastic part (41) and the second plastic part (42) are made of PPS Plastic, PSU plastic or nano-plastic integrated molding structure.
  9. 如权利要求1所述的一种电池顶盖和极柱的装配结构，其特征在于：所述第一塑胶件(41)为导电塑胶，所述第二塑胶件(42)为绝缘塑胶，所述导电塑胶的电阻为10Ω～30000Ω；优选的，所述导电塑胶的电阻为1001Ω～30000Ω。The assembly structure of the battery top cover and the pole according to claim 1, wherein the first plastic part (41) is conductive plastic, the second plastic part (42) is insulating plastic, and The resistance of the conductive plastic is 10 Ω to 30000 Ω; preferably, the resistance of the conductive plastic is 1001 Ω to 30000 Ω.
  10. 一种电池顶盖和极柱的装配方法，其特征在于，包括：A method for assembling a battery top cover and a pole, which is characterized in that it comprises:
    将至少一个第一金属钉(12)与第一金属块(11)凹凸配合，然后将所述第一金属钉(12)焊接于所述第一金属块(11)，形成第一极柱(1)；At least one first metal nail (12) is matched with the first metal block (11) with concave and convex, and then the first metal nail (12) is welded to the first metal block (11) to form a first pole ( 1);
    将至少一个第二金属钉(22)与第二金属块(21)凹凸配合，然后将所述第二金属钉(22)焊接于所述第二金属块(21)，形成第二极柱(2)；Fit at least one second metal nail (22) with the second metal block (21) concave and convex, and then weld the second metal nail (22) to the second metal block (21) to form a second pole ( 2);
    将所述第一极柱(1)和所述第二极柱(2)安装于顶盖片(3)，然后将第一塑胶件(41)包胶于所述第一极柱(1)和所述顶盖片(3)之间，将第二塑胶件(42)包胶于所述 第二极柱(2)和所述顶盖片(3)之间。Install the first pole (1) and the second pole (2) on the top cover (3), and then encapsulate the first plastic part (41) on the first pole (1) And the top cover piece (3), a second plastic part (42) is encapsulated between the second pole (2) and the top cover piece (3).
PCT/CN2020/106419 2019-08-26 2020-07-31 Battery cover and pole assembly structure and assembly method WO2021036685A1 (en)

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CN111509150B (en) * 2020-03-20 2023-01-17 合肥国轩高科动力能源有限公司 Lithium ion battery's electric core structure
CN215834606U (en) * 2021-07-15 2022-02-15 江苏正力新能电池技术有限公司 Power battery top cap, battery and power consumption device
CN113644356B (en) * 2021-07-28 2023-05-16 江苏正力新能电池技术有限公司 Lug connection structure of battery top cover and battery

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