WO2023173753A1 - 电池、电池模组及电池包 - Google Patents

电池、电池模组及电池包 Download PDF

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Publication number
WO2023173753A1
WO2023173753A1 PCT/CN2022/127587 CN2022127587W WO2023173753A1 WO 2023173753 A1 WO2023173753 A1 WO 2023173753A1 CN 2022127587 W CN2022127587 W CN 2022127587W WO 2023173753 A1 WO2023173753 A1 WO 2023173753A1
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WO
WIPO (PCT)
Prior art keywords
pole
battery
plastic part
housing
upper plastic
Prior art date
Application number
PCT/CN2022/127587
Other languages
English (en)
French (fr)
Inventor
吴迪
李开波
陈风
何巍
刘金成
Original Assignee
湖北亿纬动力有限公司
惠州亿纬动力电池有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 湖北亿纬动力有限公司, 惠州亿纬动力电池有限公司 filed Critical 湖北亿纬动力有限公司
Priority to EP22822832.6A priority Critical patent/EP4270615A1/en
Priority to US18/003,446 priority patent/US20240106042A1/en
Publication of WO2023173753A1 publication Critical patent/WO2023173753A1/zh

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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
    • 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
    • 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
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • 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

  • This application relates to the field of battery technology, for example, to a battery, a battery module and a battery pack.
  • cylindrical batteries can save the number of parts and improve battery production efficiency and assembly efficiency.
  • the terminal posts and upper plastic parts need to be firmly sealed and installed with the top cover of the case to ensure the safety performance of the battery, and the vertical direction between the terminal posts and the top cover of the case is The larger the spacing, the greater the insulating medium between the two, which can further improve the safety performance of the battery. Therefore, in cylindrical batteries, in order to increase the insulating medium in the vertical direction between the terminal pole and the top cover of the case , usually makes the terminal pole far higher than the height of the upper plastic part, which greatly reduces the flatness and appearance of the cylindrical battery.
  • This application provides a battery so that the top of the battery is smoother and more beautiful, and the safety of the battery is improved.
  • This application provides a battery module to make the top of the battery module smoother and more beautiful, and to improve the safety of the battery module.
  • This application provides a battery pack to make the top of the battery pack smoother and more beautiful, and to improve the safety of the battery pack.
  • a battery including:
  • a terminal pole is inserted into the first penetration hole
  • the upper plastic part is arranged above the top cover of the housing.
  • the terminal pole can pass through the upper plastic part and bend outward and press against the upper plastic part, and the terminal The upper top surface of the pole is flush with the upper top surface of the upper plastic part.
  • an accommodating groove is provided on the top surface of the upper plastic part, and a second through hole is provided on the bottom wall of the accommodating groove, and the terminal pole can pass through the The second through hole is bent and flanged outward and pressed against the bottom wall of the accommodating groove, so that the upper top surface of the terminal pole is flush with the upper top surface of the upper plastic part.
  • the terminal pole includes:
  • the pole plate part is connected to the pole part and is located below the top cover of the housing;
  • sealing flange connected to the pole plate part and arranged opposite to the pole plate part; the sealing flange is arranged around the outer circumference of the pole part; and the sealing flange is opposite to the pole
  • the bottom part and the pole plate part are bent outward and pressed against the bottom wall of the accommodating groove.
  • a plurality of flanging notches are spaced on the outer peripheral wall of the sealing flange.
  • annular escape groove is opened between the sealing flange and the pole part, so that the sealing flange and the pole part are spaced apart.
  • the sealing flange, the pole part and the upper top surface of the upper plastic part are flush.
  • the sealing flange is provided with an annular reinforcing rib at a portion where the pole portion and the pole plate portion are bent outward.
  • one of the lower end surface of the upper plastic part and the top cover of the housing is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion can be inserted into in the positioning groove.
  • annular protrusion is provided on the lower end surface of the upper plastic part, and the annular protrusion is sandwiched between the terminal pole and the inner peripheral wall of the first through hole.
  • the battery further includes:
  • a sealing ring sleeved on the terminal pole, and sandwiched between the terminal pole, the inner peripheral wall of the first through hole, and the inner wall of the housing top cover;
  • the lower plastic part fits the inner wall of the housing top cover and is sleeved on the outer periphery of the sealing ring;
  • An electrical connector is fitted to the lower plastic part and connected to the terminal pole;
  • the battery core is arranged inside the housing and connected to the electrical connector.
  • embodiments of the present application provide a battery module, including the above-mentioned battery.
  • embodiments of the present application provide a battery pack including at least one set of the above battery modules.
  • the terminal pole is inserted into the first penetration hole of the top cover of the case, the upper plastic part is arranged above the top cover of the case, and the terminal pole is passed through the upper plastic part outward. Bending the flange and pressing it against the upper plastic part can firmly wrap the upper plastic part and the top cover of the case to achieve a sealing effect and ensure the stability of the connection between the terminal pole and the upper plastic part and the top cover of the case. and reliability.
  • the top surface of the terminal pole is flush with the top surface of the upper plastic part, which not only makes the top of the battery smoother and more beautiful, but also increases the insulation medium in the vertical direction of the terminal pole and the case, improving the safety of the battery. sex.
  • the battery module provided by this application uses the above-mentioned battery to improve the stability and sealing effect of the connection between the casing, terminal poles and upper plastic parts, making the overall structure of the battery module more neat and beautiful, and also improving the battery module security.
  • the battery pack provided by this application uses the above-mentioned battery module to make the overall structure of the battery pack more neat and beautiful, and also improves the safety of the battery pack.
  • Figure 1 is one of the cross-sectional views of the battery provided by the embodiment of the present application.
  • Figure 2 is a partial enlarged view of position A in Figure 1;
  • Figure 3 is a schematic structural diagram of the upper plastic part provided by the embodiment of the present application.
  • Figure 4 is the second cross-sectional view of the battery provided by the embodiment of the present application.
  • FIG. 5 is a partial enlarged view of position B in FIG. 4 .
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • the specific meanings of the above terms in this application can be understood on a case-by-case basis.
  • the term “above” or “below” a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the terminal posts and upper plastic parts need to be firmly sealed and installed with the top cover of the case to ensure the safety performance of the battery, and the vertical direction between the terminal posts and the top cover of the case is The larger the spacing, the greater the insulating medium between the two, which can further improve the safety performance of the battery. Therefore, in cylindrical batteries, in order to increase the insulating medium in the vertical direction between the terminal pole and the top cover of the case , usually makes the terminal pole far higher than the height of the upper plastic part, which greatly reduces the flatness and appearance of the cylindrical battery.
  • this embodiment provides a battery, which can be a cylindrical battery, which includes an upper plastic part 1, a terminal pole 2 and a case 3, wherein the case The top cover of housing 3 is provided with a first through hole 31, and the terminal pole 2 is inserted into the first through hole 31.
  • the upper plastic part 1 is arranged above the top cover of the housing 3, and the terminal pole 2 can pass through it.
  • the upper plastic part 1 is bent and flanged outward and pressed against the upper plastic part 1, and the upper top surface of the terminal pole 2 is flush with the upper top surface of the upper plastic part 1.
  • the upper plastic part 1 and the top cover of the housing 3 can be firmly wrapped to achieve a sealing effect. Ensure the stability and reliability of the connection between the terminal pole 2, the upper plastic part 1 and the top cover of the housing 3.
  • the upper top surface of the terminal pole 2 is flush with the upper top surface of the upper plastic part 1, which not only makes the top of the battery smoother and more beautiful, but also increases the insulation medium in the vertical direction of the terminal pole 2 and the housing 3, improving the improve battery safety.
  • the terminal pole 2 is completely inserted into the first through hole 31 , so that the overlapping height of the terminal pole 2 and the first through hole 31 is maximized. , also further reduces the height of the top cover of the housing 3, which is beneficial to improving the volumetric energy density of the battery.
  • an accommodating groove 11 is formed on the upper surface of the upper plastic part 1
  • a second through hole 111 is formed on the bottom wall of the accommodating groove 11 , through which the terminal pole 2 can pass. Bend the flange outward through the second through hole 111 and press it against the bottom wall of the accommodating groove 11 so that the upper top surface of the terminal pole 2 is flush with the upper top surface of the upper plastic part 1 .
  • a positioning protrusion 12 is provided on the lower end surface of the upper plastic part 1, and the housing There is a positioning groove 32 on the top cover of the housing 3, and the positioning protrusion 12 can be inserted into the positioning groove 32, thereby ensuring that the upper plastic part 1 is positioned more accurately on the top cover of the housing 3, ensuring that the upper plastic part 1 and The top cover of the housing 3 is connected more reliably and stably.
  • a positioning groove 32 can also be provided on the lower end surface of the upper plastic part 1
  • a positioning protrusion 12 can be provided on the top cover of the housing 3 .
  • a plurality of positioning protrusions 12 are arranged at intervals on the circumference of the upper plastic part 1.
  • Each positioning protrusion 12 corresponds to a positioning groove 32, which further improves the quality of the upper plastic part 1 and the shell. The reliability and stability of body 3 top cover connection.
  • annular protrusion 13 is provided on the lower end surface of the upper plastic part 1.
  • the annular protrusion 13 is arranged around the second through hole 111, and the annular protrusion 13 is sandwiched between Between the terminal pole 2 and the inner peripheral wall of the first through hole 31 , the reliability and sealing performance of the connection between the upper plastic part 1 , the terminal pole 2 and the top cover of the housing 3 are further improved.
  • the battery also includes a sealing ring 4, the sealing ring 4 is sleeved on the terminal pole 2, and the sealing ring 4 is clamped It is provided between the terminal pole 2, the inner peripheral wall of the first penetration hole 31 and the inner wall of the top cover of the housing 3, so that the sealing ring 4 not only ensures the connection seal between the terminal pole 2 and the first penetration hole 31 It also ensures the insulation properties between the terminal pole 2 and the inner wall of the top cover of the housing 3 and the inner peripheral wall of the first through hole 31 .
  • the annular protrusion 13 is connected to the sealing ring 4 between the terminal pole 2 and the inner peripheral wall of the first through hole 31 , so that the upper plastic part 1 and the sealing ring 4 completely connect the terminal pole 2 and the shell.
  • the body 3 is separated to ensure the insulation properties between the terminal pole 2 and the housing 3.
  • the lower end surface of the sealing ring 4 is provided with a first positioning groove 41, and the terminal pole 2 is provided with a first positioning convex bump 231.
  • the first positioning convex bump 231 can be inserted into the first positioning groove 41. in the groove 41, thereby ensuring that the sealing ring 4 can be sleeved on the terminal pole 2 more quickly and accurately to achieve positioning installation.
  • the upper end surface of the sealing ring 4 is provided with a second positioning protrusion 42, and the inner wall of the top cover of the housing 3 is provided with a second positioning groove 33.
  • the second positioning protrusion 42 can be inserted into the second positioning groove 33, so that Achieve precise installation between the sealing ring 4 and the top cover of the housing 3.
  • a first positioning groove 41 can also be provided on the terminal pole 2
  • a first positioning convex 231 is provided on the lower end surface of the sealing ring 4
  • a second positioning groove 33 is provided on the upper end surface of the sealing ring 4.
  • a second positioning protrusion 42 is provided on the inner wall of the top cover of the housing 3 . It should be noted that both the first positioning convex bump 231 and the second positioning convex bump 42 are annular, and correspondingly, the first positioning groove 41 and the second positioning groove 33 are annular.
  • the first positioning groove 41 is formed by the sealing ring 4 being recessed toward the inner wall of the top cover of the housing 3, and the second positioning convex bulge 42 is formed on one side of the sealing ring 4 toward the inner wall of the top cover of the housing 3.
  • the terminal pole 2 is protruding toward one side of the sealing ring 4 to form a first positioning protrusion 231. This arrangement not only facilitates processing of the sealing ring 4, but also makes the structure of the sealing ring 4 more compact.
  • the battery also includes a lower plastic part 5, an electrical connector 6 and a battery core 7.
  • the lower plastic part 5 fits the inner wall of the top cover of the housing 3, and the lower plastic part 5 is sleeved On the outer periphery of the sealing ring 4, the insulation properties between the terminal pole 2 and the inner wall of the top cover of the housing 3 are further ensured.
  • the electrical connector 6 fits the lower plastic part 5, and the electrical connector 6 and the terminal pole 2-phase connection, the battery core 7 is arranged inside the housing 3, and the battery core 7 is connected to the electrical connector 6.
  • the terminal pole 2 includes a pole portion 21, a pole plate portion 23 and a sealing flange 22, wherein the pole The plate part 23 is connected to the pole part 21, and the plate part 23 is located below the sealing ring 4 and the lower plastic part 5.
  • the sealing flange 22 is connected to the pole plate part 23 and is arranged opposite to the pole plate part 23.
  • the sealing flange 22 is The edge 22 surrounds the outer periphery of the pole portion 21 , and the sealing flange 22 is bent outward relative to the pole portion 21 and the pole plate portion 23 and presses against the bottom wall of the accommodating groove 11 .
  • the pole part 21 , the pole plate part 23 and the sealing flange 22 are integrally formed, which simplifies the manufacturing process of the terminal pole 2 and thereby reduces the manufacturing cost of the terminal pole 2 .
  • the electrode plate portion 23 protrudes toward one side of the sealing ring 4 to form a first positioning protrusion 231 .
  • the sealing flange 22, the pole portion 21 and the upper top surface of the upper plastic part 1 are flush, making the top of the battery smoother and more beautiful.
  • a plurality of flange notches 221 are spaced on the outer peripheral wall of the sealing flange 22 .
  • the flange notch 221 reduces the tensile deformation force of the outer peripheral wall of the sealing flange 22 during the bending process, preventing the outer peripheral wall of the sealing flange 22 from cracking due to excessive tensile force during the bending process, ensuring the sealing flange. 22Reliability during the bending process.
  • an annular escape groove 24 is opened between the sealing flange 22 and the pole part 21 so that the sealing flange 22 and the pole part 21 are spaced apart, which is more conducive to sealing the flange 22 Perform an outward bending and flanging operation relative to the pole portion 21 and the pole plate portion 23 .
  • an annular reinforcing rib 222 is provided at the portion where the sealing flange 22 bends outward relative to the pole portion 21 and the plate portion 23 , further improving the strength of the bending portion of the sealing flange 22 .
  • the structural strength prevents the sealing flange 22 from breaking during the bending process, thereby improving the structural strength of the entire terminal pole 2 .
  • This embodiment also provides a battery module.
  • the stability and sealing effect of the connection between the housing 3, the terminal pole 2 and the upper plastic part 1 are improved, making the overall structure of the battery module more neat and beautiful. , and also improves the safety of the battery module.
  • This embodiment also provides a battery pack, including at least one set of the above-mentioned battery modules, which makes the overall structure of the battery pack more neat and beautiful, and also improves the safety of the battery pack.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请涉及电池技术领域，例如涉及一种电池、电池模组及电池包。该电池包括壳体、端子极柱以及上塑胶件，壳体的顶盖上开设有第一穿设孔，端子极柱穿设在第一穿设孔中，上塑胶件设置在壳体顶盖的上方，端子极柱能穿过上塑胶件向外折弯翻边并抵压在上塑胶件上，并且端子极柱的上顶面与上塑胶件的上顶面相齐平。

Description

电池、电池模组及电池包
本申请要求在2022年06月02日提交中国专利局、申请号为202221374414.7的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，例如涉及一种电池、电池模组及电池包。
背景技术
对于电池用户而言，大圆柱电池能够节约零件数量，还能够提升电池生产效率与装配效率。圆柱电池在生产制造过程中，端子极柱、上塑胶件需要与壳体的顶盖之间进行稳固的密封安装，从而保证电池的安全性能，并且端子极柱与壳体顶盖之间垂直方向的间距越大，两者之间的绝缘介质也就越大，能够进一步提升电池的安全性能，因此，在圆柱电池中，为了增加端子极柱与壳体顶盖之间垂直方向上的绝缘介质，通常使得端子极柱远远高出上塑胶件的高度，大大降低了圆柱电池的平整度和美观度。
因此，亟需一种电池、电池模组及电池包，以解决上述问题。
发明内容
本申请提供一种电池，以使电池的顶部更加平整美观，并且提升电池的安全性。
本申请提供一种电池模组，以使电池模组的顶部更加平整美观，并且提升电池模组的安全性。
本申请提供一种电池包，以使电池包的顶部更加平整美观，并且提升电池包的安全性。
第一方面，本申请实施例提供了一种电池，包括：
壳体，所述壳体的顶盖上开设有第一穿设孔；
端子极柱，穿设在所述第一穿设孔中；以及
上塑胶件，设置在所述壳体顶盖的上方，所述端子极柱能穿过所述上塑胶件并向外折弯翻边并抵压在所述上塑胶件上，并且所述端子极柱的上顶面与所述上塑胶件的上顶面相齐平。
在一实施例中，所述上塑胶件的上顶面上开设有容置槽，并且所述容置槽的底壁上开设有第二穿设孔，所述端子极柱能穿过所述第二穿设孔向外折弯翻边并抵压在所述容置槽的底壁上，以使所述端子极柱的上顶面与所述上塑胶件的上顶面相齐平。
在一实施例中，所述端子极柱包括：
极柱部；
极板部，与所述极柱部相连接，并且位于所述壳体顶盖的下方；以及
密封翻边，与所述极板部相连接并与所述极板部相对设置，所述密封翻边围设在所述极柱部的外周上，并且所述密封翻边相对所述极柱部和所述极板部向外折弯并抵压在所述容置槽的底壁上。
在一实施例中，所述密封翻边外周壁上间隔开设有多个翻边缺口。
在一实施例中，所述密封翻边和所述极柱部之间开设有环形避让槽，以使所述密封翻边与所述极柱部间隔设置。
在一实施例中，所述密封翻边、所述极柱部以及所述上塑胶件的上顶面相齐平。
在一实施例中，所述密封翻边相对所述极柱部和所述极板部向外折弯的部位设置有环形加强筋。
在一实施例中，所述上塑胶件的下端面和所述壳体的顶盖两者中的一个上设置有定位凸起，另一个上开设有定位凹槽，所述定位凸起能插入所述定位凹槽中。
在一实施例中，所述上塑胶件的下端面上设置有环形凸起，并且所述环形凸起夹设在所述端子极柱和所述第一穿设孔的内周壁之间。
在一实施例中，所述电池还包括：
密封圈，套设在所述端子极柱上，并且夹设在所述端子极柱、所述第一穿设孔的内周壁以及所述壳体顶盖的内壁之间；
下塑胶件，与所述壳体顶盖的内壁相贴合，并且套设在所述密封圈的外周上；
电连接件，与所述下塑胶件相贴合，并且与所述端子极柱相连接；以及
电芯，设置在所述壳体内部，并且与所述电连接件相连接。
第二方面，本申请实施例提供了一种电池模组，包括上述的电池。
第三方面，本申请实施例提供了一种电池包，包括至少一组上述的电池模 组。
本申请的有益效果：
本申请提供的电池，通过将端子极柱穿设在壳体顶盖的第一穿设孔中，上塑胶件设置在壳体顶盖的上方，并且将端子极柱穿过上塑胶件向外折弯翻边并抵压在上塑胶件上，能够牢固地将上塑胶件和壳体的顶盖包裹住，实现密封效果，保证端子极柱与上塑胶件和壳体顶盖连接的稳定性和可靠性。此外，端子极柱的上顶面与上塑胶件的上顶面相齐平，不仅使得电池的顶部更加平整美观，还增加了端子极柱和壳体垂直方向上的绝缘介质，提升了电池的安全性。
本申请提供的电池模组，通过应用上述电池，提高了壳体、端子极柱和上塑胶件连接的稳定性和密封效果，使得电池模组的整体结构更加整齐美观，也提升了电池模组的安全性。
本申请提供的电池包，通过应用上述电池模组，使得电池包的整体结构更加整齐美观，也提升了电池包的安全性。
附图说明
图1是本申请实施例提供的电池的剖视图之一；
图2是图1中A处的局部放大图；
图3是本申请实施例提供的上塑胶件的结构示意图；
图4是本申请实施例提供的电池的剖视图之二；
图5是图4中B处的局部放大图。
图中：
1、上塑胶件；11、容置槽；111、第二穿设孔；12、定位凸起；13、环形凸起；2、端子极柱；21、极柱部；22、密封翻边；221、翻边缺口；222、环形加强筋；23、极板部；231、第一定位凸包；24、环形避让槽；3、壳体；31、第一穿设孔；32、定位凹槽；33、第二定位槽；4、密封圈；41、第一定位槽；42、第二定位凸包；5、下塑胶件；6、电连接件；7、电芯。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
圆柱电池在生产制造过程中，端子极柱、上塑胶件需要与壳体的顶盖之间进行稳固的密封安装，从而保证电池的安全性能，并且端子极柱与壳体顶盖之间垂直方向的间距越大，两者之间的绝缘介质也就越大，能够进一步提升电池的安全性能，因此，在圆柱电池中，为了增加端子极柱与壳体顶盖之间垂直方向上的绝缘介质，通常使得端子极柱远远高出上塑胶件的高度，大大降低了圆柱电池的平整度和美观度。
为了解决上述问题，如图1和图2所示，本实施例提供了一种电池，该电池可以为圆柱电池，其包括上塑胶件1、端子极柱2以及壳体3，其中，壳体3的顶盖上开设有第一穿设孔31，端子极柱2穿设在第一穿设孔31中，上塑胶件1设置在壳体3顶盖的上方，端子极柱2能穿过上塑胶件1并向外折弯翻边并抵压在上塑胶件1上，并且端子极柱2的上顶面与上塑胶件1的上顶面相齐平。通过将端子极柱2穿过上塑胶件1向外折弯翻边并抵压在上塑胶件1上，能够牢固地将上塑胶件1和壳体3的顶盖包裹住，实现密封效果，保证端子极柱2与上塑胶件1和壳体3顶盖连接的稳定性和可靠性。此外，端子极柱2的上顶面与上塑胶件1的上顶面相齐平，不仅使得电池的顶部更加平整美观，还增加了端子极柱2和壳体3垂直方向上的绝缘介质，提升了电池的安全性。
需要说明的是，在本实施例中，如图2所示，端子极柱2完全穿设在第一穿设孔31中，使得端子极柱2与第一穿设孔31的重合高度最大化，也进一步降低了壳体3顶盖处的高度，有利于提升电池的体积能量密度。
示例性地，如图2所示，上塑胶件1的上顶面上开设有容置槽11，并且容置槽11的底壁上开设有第二穿设孔111，端子极柱2能穿过第二穿设孔111向 外折弯翻边并抵压在容置槽11的底壁上，以使端子极柱2的上顶面与上塑胶件1的上顶面相齐平。
为了保证将上塑胶件1更加精准稳定地放置在壳体3的顶盖上，如图2和图3所示，所示，上塑胶件1的下端面上设置有定位凸起12，壳体3的顶盖上开设有定位凹槽32，定位凸起12能插入定位凹槽32中，从而保证将上塑胶件1更加精准地定位在壳体3的顶盖上，保证上塑胶件1和壳体3顶盖连接地更加可靠稳定。需要说明的是，在其他实施例中，还可以在上塑胶件1的下端面上开设定位凹槽32，在壳体3的顶盖上设置定位凸起12。
示例性地，如图3所示，上塑胶件1的周向上间隔设置有多个定位凸起12，每个定位凸起12均对应一个定位凹槽32，进一步提升了上塑胶件1和壳体3顶盖连接的可靠性和稳定性。
在本实施例中，如图2和图3所示，上塑胶件1的下端面上设置有环形凸起13，环形凸起13围绕第二穿设孔111设置，并且环形凸起13夹设在端子极柱2和第一穿设孔31的内周壁之间，进一步提升了上塑胶件1、端子极柱2和壳体3顶盖之间连接的可靠性和密封性。
为了进一步提升端子极柱2与第一穿设孔31处连接的密封性，如图2所示，电池还包括密封圈4，密封圈4套设在端子极柱2上，并且密封圈4夹设在端子极柱2、第一穿设孔31的内周壁以及壳体3顶盖的内壁之间，使得密封圈4不仅保证了端子极柱2与第一穿设孔31之间的连接密封性，还确保了端子极柱2与壳体3顶盖的内壁以及第一穿设孔31的内周壁之间的绝缘特性。
在本实施例中，环形凸起13在端子极柱2和第一穿设孔31内周壁之间与密封圈4相连接，使得上塑胶件1和密封圈4完全将端子极柱2和壳体3分隔开，确保了端子极柱2与壳体3之间的绝缘特性。
示例性地，如图2所示，密封圈4的下端面上设置有第一定位槽41，端子极柱2上设置有第一定位凸包231，第一定位凸包231能插入第一定位槽41中，从而保证密封圈4能够更加快速精准地套设在端子极柱2上，实现定位安装。此外，密封圈4的上端面上设置有第二定位凸包42，壳体3顶盖的内壁上设置有第二定位槽33，第二定位凸包42能插入第二定位槽33中，从而实现密封圈4与壳体3顶盖之间的精准安装。上述设置使得密封圈4、端子极柱2以及壳体3顶盖之间的安装更加精准，也提高了连接的稳定性。在其他实施例中，也可以在端子极柱2上设置第一定位槽41，密封圈4的下端面设置第一定位凸包231，在密封圈4的上端面上设置第二定位槽33，壳体3顶盖的内壁上设置第二定位凸包42。需要说明的是，第一定位凸包231和第二定位凸包42均呈环状，相对应地，第一定位槽41和第二定位槽33呈环状。
在本实施例中，第一定位槽41由密封圈4朝向壳体3顶盖的内壁凹陷形成，并使密封圈4朝向壳体3顶盖的内壁的一侧形成第二定位凸包42，端子极柱2朝向密封圈4的一侧凸设形成第一定位凸包231，该设置方式不仅便于对密封圈4进行加工，也使得密封圈4的结构更加紧凑。
此外，如图2所示，电池还包括下塑胶件5、电连接件6以及电芯7，其中，下塑胶件5与壳体3顶盖的内壁相贴合，并且下塑胶件5套设在密封圈4的外周上，进一步保证端子极柱2与壳体3顶盖的内壁之间的绝缘特性，电连接件6与下塑胶件5相贴合，并且电连接件6与端子极柱2相连接，电芯7设置在壳体3内部，并且电芯7与电连接件6相连接。
现结合图4和图5对端子极柱2的具体结构进行说明，如图4和图5所示，端子极柱2包括极柱部21、极板部23以及密封翻边22，其中，极板部23与极柱部21相连接，并且极板部23位于密封圈4和下塑胶件5的下方，密封翻边22与极板部23相连接并与极板部23相对设置，密封翻边22围设在极柱部21的外周上，并且密封翻边22相对极柱部21和极板部23向外折弯并抵压在容置槽11的底壁上。需要说明的是，在本实施例中，极柱部21、极板部23以及密封翻边22一体成型，简化了端子极柱2的制造工艺，进而降低了端子极柱2的制造成本。在本实施例中，极板部23朝向密封圈4的一侧凸设形成第一定位凸包231。
在本实施例中，密封翻边22、极柱部21以及上塑胶件1的上顶面相齐平，使得电池的顶部更加平整美观。
示例性地，如图5所示，密封翻边22外周壁上间隔开设有多个翻边缺口221，当密封翻边22相对极柱部21和极板部23向外折弯翻边时，翻边缺口221降低了密封翻边22外周壁在折弯过程中的拉伸变形力，避免密封翻边22的外周壁在折弯过程中因拉伸力过大产生裂痕，保证了密封翻边22在折弯过程中的可靠性。
示例性地，如图5所示，密封翻边22和极柱部21之间开设有环形避让槽24，以使密封翻边22与极柱部21间隔设置，更加有利于将密封翻边22相对极柱部21和极板部23进行向外折弯翻边操作。
在本实施例中，如图5所示，密封翻边22相对极柱部21和极板部23向外折弯的部位设置有环形加强筋222，进一步提高了密封翻边22折弯部位的结构强度，避免密封翻边22在折弯的过程中，折弯部发生断裂，提升了整个端子极柱2的结构强度。
本实施例还提供了一种电池模组，通过应用上述电池，提高了壳体3、端子 极柱2和上塑胶件1连接的稳定性和密封效果，使得电池模组的整体结构更加整齐美观，也提升了电池模组的安全性。
本实施例还提供了一种电池包，包括至少一组上述的电池模组，使得电池包的整体结构更加整齐美观，也提升了电池包的安全性。

Claims (12)

  1. 一种电池，包括：
    壳体(3)，所述壳体(3)的顶盖上开设有第一穿设孔(31)；
    端子极柱(2)，穿设在所述第一穿设孔(31)中；以及
    上塑胶件(1)，设置在所述壳体(3)顶盖的上方，所述端子极柱(2)能穿过所述上塑胶件(1)并向外折弯翻边，使所述端子极柱(2)抵压在所述上塑胶件(1)上，并且所述端子极柱(2)的上顶面与所述上塑胶件(1)的上顶面相齐平。
  2. 根据权利要求1所述的电池，其中，所述上塑胶件(1)的上顶面上开设有容置槽(11)，并且所述容置槽(11)的底壁上开设有第二穿设孔(111)，所述端子极柱(2)能穿过所述第二穿设孔(111)向外折弯翻边并抵压在所述容置槽(11)的底壁上，以使所述端子极柱(2)的上顶面与所述上塑胶件(1)的上顶面相齐平。
  3. 根据权利要求2所述的电池，其中，所述端子极柱(2)包括：
    极柱部(21)；
    极板部(23)，与所述极柱部(21)相连接，并且位于所述壳体(3)顶盖的下方；以及
    密封翻边(22)，与所述极板部(23)相连接并与所述极板部(23)相对设置，所述密封翻边(22)围设在所述极柱部(21)的外周上，并且所述密封翻边(22)相对所述极柱部(21)和所述极板部(23)向外折弯并抵压在所述容置槽(11)的底壁上。
  4. 根据权利要求3所述的电池，其中，所述密封翻边(22)外周壁上间隔开设有多个翻边缺口(221)。
  5. 根据权利要求3所述的电池，其中，所述密封翻边(22)和所述极柱部(21)之间开设有环形避让槽(24)，以使所述密封翻边(22)与所述极柱部(21)间隔设置。
  6. 根据权利要求3所述的电池，其中，所述密封翻边(22)、所述极柱部(21)以及所述上塑胶件(1)的上顶面相齐平。
  7. 根据权利要求3所述的电池，其中，所述密封翻边(22)相对所述极柱部(21)和所述极板部(23)向外折弯的部位设置有环形加强筋(222)。
  8. 根据权利要求1～7任一项所述的电池，其中，所述上塑胶件(1)的下端面和所述壳体(3)的顶盖两者中的一个上设置有定位凸起(12)，另一个上 开设有定位凹槽(32)，所述定位凸起(12)能插入所述定位凹槽(32)中。
  9. 根据权利要求1～7任一项所述的电池，其中，所述上塑胶件(1)的下端面上设置有环形凸起(13)，并且所述环形凸起(13)夹设在所述端子极柱(2)和所述第一穿设孔(31)的内周壁之间。
  10. 根据权利要求1～7任一项所述的电池，还包括：
    密封圈(4)，套设在所述端子极柱(2)上，并且所述密封圈(4)夹设在所述端子极柱(2)、所述第一穿设孔(31)的内周壁以及所述壳体(3)顶盖的内壁之间；
    下塑胶件(5)，与所述壳体(3)顶盖的内壁相贴合，并且所述下塑胶件(5)套设在所述密封圈(4)的外周上；
    电连接件(6)，与所述下塑胶件(5)相贴合，并且所述电连接件(6)与所述端子极柱(2)相连接；以及
    电芯(7)，设置在所述壳体(3)内部，并且所述电芯(7)与所述电连接件(6)相连接。
  11. 一种电池模组，包括权利要求1～10任一项所述的电池。
  12. 一种电池包，包括至少一组权利要求11所述的电池模组。
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