WO2011018016A1 - 双头引出极柱的高密封性锂离子动力电池 - Google Patents

双头引出极柱的高密封性锂离子动力电池 Download PDF

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Publication number
WO2011018016A1
WO2011018016A1 PCT/CN2010/075802 CN2010075802W WO2011018016A1 WO 2011018016 A1 WO2011018016 A1 WO 2011018016A1 CN 2010075802 W CN2010075802 W CN 2010075802W WO 2011018016 A1 WO2011018016 A1 WO 2011018016A1
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WO
WIPO (PCT)
Prior art keywords
safety valve
inner ring
negative
pressure cover
side wall
Prior art date
Application number
PCT/CN2010/075802
Other languages
English (en)
French (fr)
Inventor
闻人红雁
Original Assignee
Wenren Hongyan
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Publication of WO2011018016A1 publication Critical patent/WO2011018016A1/zh

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention belongs to the technical field of manufacturing lithium-ion battery for electric vehicles, and particularly relates to a high-tightness lithium ion power battery with a double-headed pole.
  • Electric vehicles are a light, fast, green and environmentally-friendly vehicle. With the increasing awareness of environmental protection in the society, electric vehicles are becoming more and more popular. The electric vehicle industry is also strongly supported by all sectors of society, including government departments.
  • the battery is the "heart" of the electric car, and the performance of the battery directly affects the performance and quality of the electric car.
  • the structure of the existing battery has poor sealing performance and low safety. And safety is one of the most important performance indicators of batteries. Therefore, it is necessary to improve and innovate existing battery structures to improve their safety.
  • the invention discloses a high-tightness lithium ion power battery with double-headed poles, which solves the technical problem that the existing battery has low safety.
  • a high-tightness lithium ion power battery with a double-headed pole including a casing, the casing has a rectangular parallelepiped shape, and the opposite ends of the casing are integrally formed with a positive pressure cover.
  • the anode pressure cover, the positive pressure cover is provided with a positive pole and a positive safety valve, the negative pressure cover is provided with a negative pole and a negative safety valve, and a first sealing ring is placed between the positive pressure cover and the positive safety valve, and the negative electrode A second sealing ring is placed between the pressure cap and the negative safety valve.
  • the positive pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring Connected to the outer ring by the transition section, the outer wall of the inner ring forms a round barb thorn, and the hook surface of the barb is oriented toward the casing;
  • the positive safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms an annular groove, the inner ring is inside the positive safety valve, and a gap is left between the inner ring and the side wall;
  • the side wall extends into the annular groove of the positive pressure cover, and the inner ring of the positive pressure cover extends into the gap of the positive safety valve, and one of the inner walls of the annular groove of the side wall of the positive safety valve and the inner ring of
  • the anode pressure cover is convex inward, the inner convex portion defines a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring and the outer ring respectively
  • the ring is connected by the transition section, the outer wall of the inner ring forms a circle of barbs, and the hook surface faces the casing;
  • the negative safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms an annular groove
  • the inner ring is inside the negative safety valve, and there is a gap between the inner ring and the side wall; the side wall of the negative safety valve extends into the annular groove of the negative pressure cover, and the inner ring of the negative pressure cover extends into the gap of the negative safety valve
  • One of the inner walls of the annular groove of the side wall of the negative safety valve overlaps with the hook surface of the inner
  • the casing is provided with a positive pole transparent cover of a positive pole and a negative pole of a negative pole of the outer casing.
  • a plurality of parallel lateral square reinforcing ribs are formed on the outer wall of the casing.
  • the outermost end reinforcing rib of one side of the casing forms a protrusion
  • the outermost end reinforcing rib of the other side forms a recess
  • the shape of the recess is matched with the protrusion
  • the structure of the two outermost ribs on the opposite side of the body is opposite to the outermost rib structure of the opposite side.
  • the positive pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring And outside
  • the ring is connected by the transition section, and the outer wall of the inner ring forms an annular groove;
  • the positive safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barb thorns, and the barbed hook
  • the inner ring is in the inner side of the positive pressure relief valve, and the inner ring and the side wall are left with a gap; the side wall of the positive pressure safety valve extends into the annular groove of the positive pressure cover, and the inner ring of the positive pressure cover extends into the positive electrode.
  • the hook surface of the sidewall of the positive safety valve overlaps with one of the inner walls of the annular groove of the inner ring of the positive pressure cover; the sealing ring is placed in the gap of the positive safety valve and is at the positive pressure The upper end surface of the inner ring of the cover is between the inner wall of the top plate of the positive safety valve.
  • the anode pressure cover is convex inward, the inner convex portion defines a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring and the outer ring respectively
  • the ring is connected by the transition section, and the outer wall of the inner ring forms an annular groove;
  • the negative safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barb thorns, and the barb hook
  • the inner ring is in the inner part of the negative pressure safety valve, and there is a gap between the inner ring and the side wall; the side wall of the negative safety valve extends into the annular groove of the negative pressure cover, and the inner ring of the negative pressure cover extends into the negative electrode In the gap of the valve, the hook surface of the side wall of the negative safety valve overlaps with one of the inner walls of
  • the anode pressure cover is convex inward, the inner convex portion defines a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring and the outer ring respectively
  • the ring is connected by the transition section, and the outer wall of the inner ring forms an annular groove;
  • the negative safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barb thorns, and the barb hook
  • the inner ring is in the inner part of the negative pressure safety valve, and there is a gap between the inner ring and the side wall; the side wall of the negative safety valve extends into the annular groove of the negative pressure cover, and the inner ring of the negative pressure cover extends into the negative electrode In the gap of the valve, the hook surface of the side wall of the negative safety valve overlaps with one of the inner walls of
  • the negative pressure cover is inwardly convex, and the inner convex portion defines a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring
  • the outer ring is connected with the outer ring, and the outer wall of the inner ring forms a circle of barbs, and the hook surface faces the casing;
  • the negative safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a ring.
  • the inner ring is inside the negative safety valve, and there is a gap between the inner ring and the side wall; the side wall of the negative safety valve extends into the annular groove of the negative pressure cover, and the inner ring of the negative pressure cover extends into the negative safety valve In the gap, one of the inner walls of the annular groove of the side wall of the negative safety valve overlaps with the hook surface of the inner ring of the negative pressure cover; the sealing ring is placed in the gap of the negative safety valve, and is in The upper end surface of the inner ring of the negative pressure cover is between the inner wall of the top plate of the negative safety valve.
  • the positive pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring
  • the outer ring is connected with the outer ring, and the outer wall of the inner ring forms a round barb;
  • the positive safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barbs, the inner ring Inside the positive safety valve, there is a gap between the inner ring and the side wall; the side wall of the positive safety valve extends into the annular groove of the positive pressure cover, and the inner ring of the positive pressure cover extends into the gap of the positive safety valve,
  • the hook surface of the barb of the positive safety valve overlaps with the hook surface of the inner ring of the positive pressure cover; the sealing ring is placed in the gap of the
  • the negative pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring
  • the outer ring is connected with the outer ring, and the outer wall of the inner ring forms a round barb;
  • the negative safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barbs, the inner ring Inside the negative safety valve, there is a gap between the inner ring and the side wall; the side wall of the negative safety valve extends into the annular groove of the negative pressure cover, and the inner ring of the negative pressure cover extends into the gap of the negative safety valve,
  • the hook surface of the barb of the negative safety valve overlaps with the hook surface of the inner ring of the negative pressure cover; the sealing ring is placed in the gap of the
  • the positive pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring
  • the outer ring is connected with the outer ring, and the outer wall of the inner ring forms a round barb;
  • the positive safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barbs, the inner ring Inside the positive safety valve, there is a gap between the inner ring and the side wall; the side wall of the positive safety valve extends into the annular groove of the positive pressure cover, and the inner ring of the positive pressure cover extends into the gap of the positive safety valve,
  • the hook surface of the barb of the positive safety valve overlaps with the hook surface of the inner ring of the positive pressure cover; the sealing ring is placed in the gap of the
  • the positive pressure cover is partially inwardly convex, the inner convex portion is provided with a liquid injection hole, and the inner convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively, and the inner ring
  • the outer ring is connected with the outer ring, and the outer wall of the inner ring forms a round barb;
  • the positive safety valve is integrally formed by the top plate, the side wall and the inner ring, and the inner side of the side wall forms a circle of barbs, the inner ring Inside the positive safety valve, there is a gap between the inner ring and the side wall; the side wall of the positive safety valve extends into the annular groove of the positive pressure cover, and the inner ring of the positive pressure cover extends into the gap of the positive safety valve,
  • the hook surface of the barb of the positive safety valve overlaps with the hook surface of the inner ring of the positive pressure cover; the sealing ring is placed in the gap of the
  • the high-tightness lithium ion power battery of the double-headed pole of the invention is provided with a sealing ring to enhance airtightness.
  • the safety valve will be bounced to release the internal air pressure to avoid the danger of explosion.
  • FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Fig. 2 is an enlarged view of a portion A of Fig. 1.
  • Fig. 3 is a partial enlarged view of the second embodiment.
  • Fig. 4 is a partial enlarged view of the third embodiment.
  • the high-tightness lithium ion power battery of the double-headed pole is composed of a casing 4 having a rectangular parallelepiped shape, and the outer wall of the casing 4 is formed with a plurality of parallel lateral directions.
  • the structure of the two outermost end ribs on the opposite side of the casing 4 is exactly opposite to the above, and when a plurality of batteries are arranged, the arrangement can be accurately positioned by the cooperation of the above-mentioned embossed points.
  • the two opposite sides of the casing 4 integrally form a positive pressure cover 2 and a negative pressure cover 14 respectively.
  • the positive pressure cover 2 is provided with a positive pole 3 and a safety valve 1.
  • the negative pressure cover 14 is provided with a negative aluminum pole 11 and a safety valve. 13.
  • the matching structure of the positive pressure cover 2 and the safety valve 1 is as follows:
  • the positive pressure cover 2 is partially inwardly convex, and the inner convex portion is provided with a liquid injection hole 24, and the convex portion forms an annular groove 21, and the inner and outer portions of the annular groove 21 are respectively inner.
  • the ring 22, the outer ring 23, the inner ring 22 and the outer ring 23 are connected by a transition portion 26, and the middle through hole of the inner ring 22 is a liquid injection hole 24.
  • the outer wall of the inner ring 22 forms a loop of barbs 25 with its hook faces facing the inside of the casing (the hook faces can also face the outside of the casing).
  • the safety valve 1 is in the shape of a bottle cap. According to the cross section of the safety valve, the top plate 11, the side wall 12 and the inner ring 13 are integrally formed, and the inner side surface of the side wall 12 forms an annular groove 14 under the annular groove 14 The inner wall overlaps with the hook surface of the barb 25 of the inner ring 22 of the positive pressure cover.
  • the inner ring 13 is inside the safety valve 1, is centered on the side wall 12, and has a gap between the inner ring 13 and the side wall 12, and the gap 15 is built into the seal ring 16.
  • the side wall 12 of the safety valve extends into the annular groove 21 of the pressure cover 2, the inner ring 22 of the pressure cover 2 extends into the gap 15 of the safety valve 1, and the sealing ring 16 is at the upper end surface of the inner ring 22 of the positive pressure cover and the safety valve Between the inner walls of the top plate 11.
  • the structure of the negative pressure cover 14 and the safety valve 13 is the same as that of the positive electrode, and can be referred to the above, and will not be described in detail.
  • the two ends of the casing 4 are respectively covered with a positive transparent cover 9 and a negative transparent cover 10, and the two transparent covers are respectively disposed at the corresponding two ends of the casing 4.
  • the transparent cover can be dustproof and waterproof to block the influence of the external pole on the pole, the safety valve and the like.
  • Embodiment 2 In this embodiment, the matching structure of the safety valve and the pressure cover in the first embodiment is reversed. Referring to FIG. 3, the barb is provided on the safety valve, and the annular groove is disposed on the pressure cover. .
  • the structure of the positive electrode and the negative electrode may be different, for example, the structure of the positive electrode adopts the structure of the first embodiment, and the structure of the negative electrode adopts the structure of the second embodiment, or the structure of the positive electrode is adopted.
  • the structure of the second embodiment, and the structure of the negative electrode structure adopting the first embodiment, and the like, are the protection scope of the present invention and will not be described in detail.
  • Embodiment 3 As shown in FIG. 4, the positive pressure cover 2 is partially inwardly convex, and the inner convex portion is provided with a liquid injection hole, and the convex portion forms an annular groove, and the inner and outer portions of the annular groove are an inner ring and an outer ring respectively.
  • the ring and the outer ring are connected by a transition section, and the middle through hole of the inner ring is a liquid injection hole.
  • the outer wall of the inner ring forms a circle of barbs 25 with the hook faces facing the inside of the casing.
  • the positive safety valve 1 has a bottle cap shape. According to the cross section of the safety valve, the top plate, the side wall and the inner ring are integrally formed, and the inner side surface of the side wall forms a circle of barbs 27, and the hook surface faces the outer side of the casing, and The barb surface of the inner ring of the positive pressure cover is overlapped.
  • the matching structure of the anode pressure cap and the anode safety valve is the same as that of the anode, and will not be described in detail.
  • the structure of the present embodiment can also be matched with the structure of the foregoing embodiment, such as: the positive electrode structure adopts the embodiment, and the negative electrode structure adopts the structure of the first embodiment or the second embodiment, or the negative electrode adopts the structure of the embodiment, and
  • the structure of the positive electrode adopting the first embodiment or the second embodiment, and the like, are the protection scope of the present invention, and will not be described in detail.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Description

说 明 书 双头引出极柱的高密封性锂离子动力电池 【技术领域】
本发明属于电动车锂离子动力电池的制造技术领域， 特别涉及一种双头引 出极柱的高密封性锂离子动力电池。
【背景技术】
电动车是一种轻便快捷、 绿色环保的交通工具， 随着社会环保意识的普遍 增强， 电动车越来越普及， 电动车产业也受到包括政府部门在内的社会各界地 大力支持。
电池是电动车的 "心脏"， 电池的性能直接影响电动车的性能和质量。 现有 电池的结构， 其安全阀的密封性差， 安全性低。 而安全性是电池的最主要性能 指标之一。 因此， 有必要对现有电池结构进行改进和创新， 以提高其安全性。
【发明内容】
本发明公开了一种双头引出极柱的高密封性锂离子动力电池， 解决了现有 电池存在安全性低的技术问题。
为解决上述技术问题， 本发明所采取的技术方案如下： 双头引出极柱的高 密封性锂离子动力电池， 包括壳体， 壳体呈长方体状， 壳体的相对两头分别一 体成型正极压力盖、 负极压力盖， 正极压力盖设有正极极柱、 正极安全阀， 负 极压力盖设有负极极柱、 负极安全阀， 正极压力盖与正极安全阀间置入第一密 封圈， 所述的负极压力盖与负极安全阀间置入第二密封圈。
所述的高密封性锂离子动力电池， 正极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一圈倒勾刺， 倒勾刺的勾面朝向壳体内； 所 述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道环形凹 槽， 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀的侧壁 伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所 述正极安全阀侧壁的环形凹槽的其中一内壁与正极压力盖内环的倒勾刺的勾面 搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环上端面 与正极安全阀的顶板内壁间。
所述的高密封性锂离子动力电池， 负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外环由过渡 段相连， 内环的外壁形成一圈倒勾刺， 勾面朝向壳体内； 所述的负极安全阀由 顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道环形凹槽， 内环处于负极 安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的侧壁伸入负极压力盖的 环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安全阀侧壁 的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺的勾面搭接； 所述的密封 圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面与负极安全阀的顶 板内壁间。
所述的高密封性锂离子动力电池， 壳体设正极极柱一头外罩正极透明罩， 壳体设负极极柱一头外罩负极透明罩。
所述的高密封性锂离子动力电池， 壳体的四周外壁形成多条相平行的横向 的方形加强筋。
所述的高密封性锂离子动力电池， 壳体一侧面的最外端加强筋形成凸起， 该侧面的另一头最外端加强筋形成凹陷， 该凹陷的形状与凸起相适配； 壳体的 相对另一侧面两条最外端加强筋的结构与上述相对侧面的最外端加强筋结构相 反。
所述的高密封性锂离子动力电池， 正极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一道环形凹槽； 所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈倒勾刺， 倒勾刺的勾面朝向壳体 内； 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀的侧壁 伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所 述正极安全阀侧壁的勾面与正极压力盖内环的环形凹槽的其中一内壁搭接； 所 述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环上端面与正极安 全阀的顶板内壁间。
所述的高密封性锂离子动力电池， 负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外环由过渡 段相连， 内环的外壁形成一道环形凹槽； 所述的负极安全阀由顶板、 侧壁及内 环一体成型， 侧壁的内侧面形成一圈倒勾刺， 倒勾刺的勾面朝向壳体内； 内环 处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的侧壁伸入负极 压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安 全阀侧壁的勾面与负极压力盖内环的环形凹槽的其中一内壁搭接； 所述的密封 圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面与负极安全阀的顶 板内壁间。
所述的高密封性锂离子动力电池， 负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外环由过渡 段相连， 内环的外壁形成一道环形凹槽； 所述的负极安全阀由顶板、 侧壁及内 环一体成型， 侧壁的内侧面形成一圈倒勾刺， 倒勾刺的勾面朝向壳体内； 内环 处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的侧壁伸入负极 压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安 全阀侧壁的勾面与负极压力盖内环的环形凹槽的其中一内壁搭接； 所述的密封 圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面与负极安全阀的顶 板内壁间。 所述的高密封性锂离子动力电池， 所述负极压力盖向内凸， 内凸部开设注 液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外环 由过渡段相连， 内环的外壁形成一圈倒勾刺， 勾面朝向壳体内； 所述的负极安 全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道环形凹槽， 内环处 于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的侧壁伸入负极压 力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安全 阀侧壁的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺的勾面搭接； 所述 的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面与负极安全 阀的顶板内壁间。
所述的高密封性锂离子动力电池， 正极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的正极安全阀由顶板、 侧 壁及内环一体成型， 侧壁的内侧面形成一圈倒勾刺， 内环处于正极安全阀的内 部， 内环与侧壁间留有间隙； 正极安全阀的侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的 勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的 间隙内， 并处于正极压力盖内环上端面与正极安全阀的顶板内壁间。
所述的高密封性锂离子动力电池， 负极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的负极安全阀由顶板、 侧 壁及内环一体成型， 侧壁的内侧面形成一圈倒勾刺， 内环处于负极安全阀的内 部， 内环与侧壁间留有间隙； 负极安全阀的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安全阀侧壁的倒勾刺的 勾面与负极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入负极安全阀的 间隙内， 并处于负极压力盖内环上端面与负极安全阀的顶板内壁间。 所述的高密封性锂离子动力电池， 正极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的正极安全阀由顶板、 侧 壁及内环一体成型， 侧壁的内侧面形成一圈倒勾刺， 内环处于正极安全阀的内 部， 内环与侧壁间留有间隙； 正极安全阀的侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的 勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的 间隙内， 并处于正极压力盖内环上端面与正极安全阀的顶板内壁间； 所述负极 压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分 别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所 述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道环形凹 槽， 内环处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的侧壁 伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所 述负极安全阀侧壁的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺的勾面 搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面 与负极安全阀的顶板内壁间。
所述的高密封性锂离子动力电池， 正极压力盖的局部向内凸， 内凸部开设 注液孔， 内凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外 环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的正极安全阀由顶板、 侧 壁及内环一体成型， 侧壁的内侧面形成一圈倒勾刺， 内环处于正极安全阀的内 部， 内环与侧壁间留有间隙； 正极安全阀的侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的 勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的 间隙内， 并处于正极压力盖内环上端面与正极安全阀的顶板内壁间； 所述负极 压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分 别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一道环形凹槽； 所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈倒勾 刺， 倒勾刺的勾面朝向壳体外； 内环处于负极安全阀的内部， 内环与侧壁间留 有间隙； 负极安全阀的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸 入负极安全阀的间隙内， 所述负极安全阀侧壁的勾面与负极压力盖内环的环形 凹槽的其中一内壁搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极 压力盖内环上端面与负极安全阀的顶板内壁间。
本发明双头引出极柱的高密封性锂离子动力电池， 其加装了密封圈， 增强 了气密性。 当电池内部气压达到一定值时， 安全阀会被弹开， 将内部气压泄放， 避免造成爆炸的危险。
【附图说明】
图 1为本发明实施例一的结构示意图。
图 2为图 1的 A部放大图。
图 3为实施例二的局部放大图。
图 4为实施例三的局部放大图。
【具体实施方式】
下面结合附图对本发明作详细说明。
实施例一： 如图 1、 2所示， 双头引出极柱的高密封性锂离子动力电池包括 壳体 4， 壳体 4呈长方体状， 壳体 4的四周外壁形成多条相平行的横向的方形加 强筋 5， 壳体 4一侧面的最外端加强筋 5形成凸起 6， 该侧面的另一头最外端加 强筋 5形成凹陷， 该凹陷的形状与凸起 6相适配； 而壳体 4的相对另一侧面两 条最外端加强筋的结构刚好与上述相反， 则， 当多个电池排列时， 可以通过上 述凹凸点的配合而准确定位排列。 壳体 4的两个相对侧分别一体形成正极压力盖 2、 负极压力盖 14， 正极压 力盖 2设有正极极柱 3、 安全阀 1， 负极压力盖 14设有负极铝极柱 11、 安全阀 13。
正极压力盖 2与安全阀 1的配合结构如下： 正极压力盖 2的局部向内凸， 内凸部开有注液孔 24， 其凸部形成一道环形槽 21， 环形槽 21 的内外分别为内 环 22、 外环 23， 内环 22与外环 23间通过过渡段 26相连， 内环 22的中部通孔 便为注液孔 24。 内环 22的外壁形成一圈倒勾刺 25， 其勾面朝向壳体内部 (其勾 面也可以朝向壳体外部）。
安全阀 1呈瓶盖状， 根据安全阀的横截面， 其由顶板 11、 侧壁 12及内环 13—体成型， 侧壁 12的内侧面形成一道环形凹槽 14， 环形凹槽 14的下内壁与 正极压力盖内环 22的倒勾刺 25勾面相搭接。 内环 13处于安全阀 1的内部， 与 侧壁 12同圆心， 内环 13与侧壁 12间留有间隙 15， 间隙 15内置入密封圈 16。
安全阀的侧壁 12伸入压力盖 2的环形槽 21内， 压力盖 2的内环 22伸入安 全阀 1的间隙 15内， 密封圈 16处于正极压力盖的内环 22上端面与安全阀的顶 板 11的内壁间。
负极压力盖 14与安全阀 13的结构与正极结构相同， 可参考上述内容， 不 再详述。
当电池内部气压达到一定压力时， 内部气压顶起安全阀， 使安全阀与压力 盖搭接部相脱离， 安全阀被弹开， 而将气体排出壳体之外， 避免因内部气压太 大而发生电池爆炸的危险。
壳体 4的两头分别外罩正极透明罩 9、 负极透明罩 10， 两透明罩分别于壳 体 4相应的两头， 透明罩可以防尘、 防水， 以阻挡外界对极柱、 安全阀等的影 响。
实施例二： 本实施例将实施例一中的安全阀与压力盖的配合结构对调， 参 见图 3， 倒勾刺设于安全阀， 而环形凹槽设于压力盖， 其它内容参考实施例一。 上述对正极与负极相同结构的两个实施例予以说明， 当然， 正极与负极结 构可以不同， 如： 正极结构采用实施例一的结构， 而负极结构采用实施例二的 结构， 或者， 正极结构采用实施例二的结构， 而负极结构采用实施例一的结构， 等等， 都是本发明的保护范围， 不再详述。
实施例三： 如图 4所示， 正极压力盖 2的局部向内凸， 内凸部开有注液孔， 其凸部形成一道环形槽， 环形槽的内外分别为内环、 外环， 内环与外环间通过 过渡段相连， 内环的中部通孔便为注液孔。 内环的外壁形成一圈倒勾刺 25， 其 勾面朝向壳体内部。
正极安全阀 1 呈瓶盖状， 根据安全阀的横截面， 其由顶板、 侧壁及内环一 体成型， 侧壁的内侧面形成一圈倒勾刺 27， 勾面朝向壳体外侧， 其与正极压力 盖内环的倒勾刺 25勾面相搭接。
负极压力盖与负极安全阀的配合结构与正极相同， 不再详述。
本实施例的其它内容参考前述实施例。
本实施例的配合结构也可以与前述实施例的结构予以配合， 如： 正极结构 采用本实施例， 而负极结构采用实施例一或实施例二的结构， 或者负极采用本 实施例的结构， 而正极采用实施例一或实施例二的结构， 等等， 都是本发明的 保护范围， 不再详述。
上述只是对本发明优选实施例所作的说明， 而并非作为对本发明的限制， 本技术领域的普通技术人员应当认识到， 任何对本发明所作的变换、 变型都落 入本发明的保护范围。

Claims

权 利 要 求 书
1、双头引出极柱的高密封性锂离子动力电池， 包括壳体， 壳体呈长方体状， 其特征在于： 壳体的相对两头分别一体成型正极压力盖、 负极压力盖， 正极压 力盖设有正极极柱、 正极安全阀， 负极压力盖设有负极极柱、 负极安全阀， 所 述的正极压力盖与正极安全阀间置入第一密封圈， 所述的负极压力盖与负极安 全阀间置入第二密封圈。
2、 如权利要求 1所述的高密封性锂离子动力电池， 其特征在于： 所述正极 压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的 内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒勾 刺；
所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道 环形凹槽， 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀 的侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙 内， 所述正极安全阀侧壁的环形凹槽的其中一内壁与正极压力盖内环的倒勾刺 的勾面搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环 上端面与正极安全阀的顶板内壁间。
3、 如权利要求 1或 2所述的高密封性锂离子动力电池， 其特征在于： 所述 负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内 外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道 环形凹槽， 内环处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀 的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙 内， 所述负极安全阀侧壁的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺 的勾面搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环 上端面与负极安全阀的顶板内壁间。
4、 如权利要求 1所述的高密封性锂离子动力电池， 其特征在于： 壳体设正 极极柱一头外罩正极透明罩， 壳体设负极极柱一头外罩负极透明罩。
5、 如权利要求 1或 4所述的高密封性锂离子动力电池， 其特征在于： 所述 壳体的四周外壁形成多条相平行的横向的方形加强筋。
6、 如权利要求 5所述的高密封性锂离子动力电池， 其特征在于： 所述壳体 一侧面的最外端加强筋形成凸起， 该侧面的另一头最外端加强筋形成凹陷， 该 凹陷的形状与凸起相适配； 壳体的相对另一侧面两条最外端加强筋的结构与上 述相对侧面的最外端加强筋结构相反。
7、 如权利要求 1所述的高密封性锂离子动力电池， 其特征在于： 所述正极 压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的 内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一道环形 凹槽；
所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 倒勾刺的勾面朝向壳体外； 内环处于正极安全阀的内部， 内环与侧壁 间留有间隙； 正极安全阀的侧壁伸入正极压力盖的环形槽内， 正极压力盖的内 环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的勾面与正极压力盖内环的 环形凹槽的其中一内壁搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于 正极压力盖内环上端面与正极安全阀的顶板内壁间。
8、 如权利要求 1或 7所述的高密封性锂离子动力电池， 其特征在于： 所述 负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内 外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一道环形凹
1曰；
所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 倒勾刺的勾面朝向壳体外； 内环处于负极安全阀的内部， 内环与侧壁 间留有间隙； 负极安全阀的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内 环伸入负极安全阀的间隙内， 所述负极安全阀侧壁的勾面与负极压力盖内环的 环形凹槽的其中一内壁搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于 负极压力盖内环上端面与负极安全阀的顶板内壁间。
9、 如权利要求 2所述的高密封性锂离子动力电池， 其特征在于： 所述负极 压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外分 别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一道环形凹槽； 所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 倒勾刺的勾面朝向壳体外； 内环处于负极安全阀的内部， 内环与侧壁 间留有间隙； 负极安全阀的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内 环伸入负极安全阀的间隙内， 所述负极安全阀侧壁的勾面与负极压力盖内环的 环形凹槽的其中一内壁搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于 负极压力盖内环上端面与负极安全阀的顶板内壁间。
10、 如权利要求 7所述的高密封性锂离子动力电池， 其特征在于： 所述负 极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽的内外 分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒勾刺； 所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道 环形凹槽， 内环处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀 的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙 内， 所述负极安全阀侧壁的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺 的勾面搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环 上端面与负极安全阀的顶板内壁间。
11、 如权利要求 1 所述的高密封性锂离子动力电池， 其特征在于： 所述正 极压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽 的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒 勾刺；
所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀的 侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环上端面与正极 安全阀的顶板内壁间。
12、 如权利要求 1或 2或 7或 11所述的高密封性锂离子动力电池， 其特征 在于： 所述负极压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环 形槽， 环形槽的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外 壁形成一圈倒勾刺；
所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 内环处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀的 侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙内， 所述负极安全阀侧壁的倒勾刺的勾面与负极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环上端面与负极 安全阀的顶板内壁间。
13、 如权利要求 1 所述的高密封性锂离子动力电池， 其特征在于： 所述正 极压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽 的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒 勾刺；
所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀的 侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环上端面与正极 安全阀的顶板内壁间； 所述负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环 形槽的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一 圈倒勾刺；
所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一道 环形凹槽， 内环处于负极安全阀的内部， 内环与侧壁间留有间隙； 负极安全阀 的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内环伸入负极安全阀的间隙 内， 所述负极安全阀侧壁的环形凹槽的其中一内壁与负极压力盖内环的倒勾刺 的勾面搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于负极压力盖内环 上端面与负极安全阀的顶板内壁间。
14、 如权利要求 1 所述的高密封性锂离子动力电池， 其特征在于： 所述正 极压力盖的局部向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环形槽 的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一圈倒 勾刺；
所述的正极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 内环处于正极安全阀的内部， 内环与侧壁间留有间隙； 正极安全阀的 侧壁伸入正极压力盖的环形槽内， 正极压力盖的内环伸入正极安全阀的间隙内， 所述正极安全阀侧壁的倒勾刺的勾面与正极压力盖内环的倒勾刺的勾面搭接； 所述的密封圈置入正极安全阀的间隙内， 并处于正极压力盖内环上端面与正极 安全阀的顶板内壁间；
所述负极压力盖向内凸， 内凸部开设注液孔， 内凸部形成一道环形槽， 环 形槽的内外分别为内环、 外环， 内环与外环由过渡段相连， 内环的外壁形成一 道环形凹槽；
所述的负极安全阀由顶板、 侧壁及内环一体成型， 侧壁的内侧面形成一圈 倒勾刺， 倒勾刺的勾面朝向壳体外； 内环处于负极安全阀的内部， 内环与侧壁 间留有间隙； 负极安全阀的侧壁伸入负极压力盖的环形槽内， 负极压力盖的内 环伸入负极安全阀的间隙内， 所述负极安全阀侧壁的勾面与负极压力盖内环的 环形凹槽的其中一内壁搭接； 所述的密封圈置入负极安全阀的间隙内， 并处于 负极压力盖内环上端面与负极安全阀的顶板内壁间。
6
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