WO2023207217A1 - 电池绝缘件、顶盖组件及电池 - Google Patents

电池绝缘件、顶盖组件及电池 Download PDF

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Publication number
WO2023207217A1
WO2023207217A1 PCT/CN2023/070385 CN2023070385W WO2023207217A1 WO 2023207217 A1 WO2023207217 A1 WO 2023207217A1 CN 2023070385 W CN2023070385 W CN 2023070385W WO 2023207217 A1 WO2023207217 A1 WO 2023207217A1
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WO
WIPO (PCT)
Prior art keywords
pole
battery
mounting plate
plate
limiting
Prior art date
Application number
PCT/CN2023/070385
Other languages
English (en)
French (fr)
Inventor
舒宽金
袁威
郑旭
贺孝武
何巍
Original Assignee
湖北亿纬动力有限公司
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 filed Critical 湖北亿纬动力有限公司
Publication of WO2023207217A1 publication Critical patent/WO2023207217A1/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 of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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 insulator, a top cover assembly and a battery.
  • the plastic part is integrally formed, and the plastic part extends toward the side of the battery core to form a shielding part.
  • the shielding part will block the welding head of the welding equipment from extending into the welding position between the pole and the pole lug. It affects the positioning and welding of the pole by the welding equipment, thereby affecting the welding quality between the pole lug and the pole.
  • This application provides a battery insulator with a simple structure and a split design.
  • This application also provides a top cover assembly with a simple structure and high assembly efficiency.
  • This application also provides a battery with a simple structure and high safety.
  • inventions of the present application provide a battery insulator, which is provided between a cover and a battery core.
  • the battery insulator includes a first component and a second component, and the first component includes a first body, Two baffles are provided at intervals on one end of the first body toward the second member, the second member includes a second body, and a mounting plate is provided on one end of the second body toward the first body.
  • the mounting plate is provided with a first pole hole for the pole of the battery to pass through.
  • the mounting plate is movably arranged between the two baffles.
  • the mounting plate and the two baffles jointly form an accommodating space.
  • the receiving groove is configured to accommodate the tab of the battery core.
  • the mounting plate is slidingly connected to the baffle.
  • one of each baffle and the mounting plate is provided with a chute, the chute extends along the length direction of the mounting plate, and the other is provided with a chute connected to the installation plate.
  • the slider is adapted to the chute, and the slider is slidably arranged in the chute.
  • the chute is provided on the mounting plate, and the mounting plate is provided with a first limiting part.
  • the first limiting part is located away from the second position along the length direction of the chute. At one end of the main body, when the first limiting portion is in contact with the slider, the first limiting portion can limit the slider from escaping from the slide groove.
  • a second limiting part is provided at one end of the mounting plate away from the second body, and a third limiting part is provided between the two baffles.
  • the third limiting part is connected to The first body is spaced apart.
  • a fourth limiting portion is provided at one end of the mounting plate close to the second body. When a side of the fourth limiting portion facing away from the second body abuts against a side of the slider facing the second body. When connected, the fourth limiting portion can limit the movement of the mounting plate in a direction close to the first body.
  • a limiting bar is provided on each baffle, the limiting bar and the slider are located on the same side of the baffle, and the limiting bar is disposed toward the mounting plate.
  • embodiments of the present application provide a top cover assembly, including a cover plate, poles, terminals and the above-mentioned battery insulator.
  • the battery insulator and the terminal are located on opposite sides of the cover plate.
  • the cover plate is provided with a second pole hole corresponding to the first pole hole on the first member.
  • the first end of the pole is connected to the pole lug, and the second end of the pole passes through it in turn.
  • the first pole hole and the second pole hole are connected to the terminal.
  • the pole includes a body and a pole plate.
  • the pole plate is arranged in the receiving groove.
  • the pole plate includes a first connection part, a second connection part and a fuse part.
  • the body and the pole plate are arranged in the receiving groove.
  • the first connection part and the tab are connected to the second connection part, and the first connection part and the second connection part are connected through the fuse part.
  • the top cover assembly further includes an insulating sheet, the insulating sheet is disposed on a side of the pole plate facing away from the cover plate, and the insulating sheet covers at least the first connecting portion and the The fuse part is on a side surface facing away from the cover plate.
  • the mounting plate is provided with a limiting protrusion on one side facing the pole plate, the pole plate is provided with a through hole, and the limiting protrusion is inserted into the through hole.
  • the cross-section of the body is rectangular, and the ratio of the long side to the wide side of the body is X, 1 ⁇ X ⁇ 10; or,
  • the cross-section of the body is elliptical, and the ratio of the long axis to the short axis of the body is Y, 1 ⁇ Y ⁇ 10.
  • a battery which includes a casing, a battery core and the above-mentioned battery insulator.
  • the top cover assembly is disposed at the opening of the casing, and the tabs of the battery core are in contact with the battery insulator.
  • the pole posts are connected, and the pole tabs are located in the receiving grooves.
  • a step surface is provided on the periphery of the cover plate, the step surface abuts the open end of the housing, and part of the cover plate is inserted into the housing, and the cover plate
  • the thickness is H
  • the distance between one side of the cover plate adjacent to the battery core and the step surface is D, and D ⁇ 2/3H.
  • the pole tab is provided with at least one bent portion.
  • the beneficial effects of the present application are: by using the battery insulator as a split component of the first component and the second component, it is easy to design and produce the first component and the second component respectively, the structure is simpler, and the manufacturing cost is low.
  • the first body is provided with baffles at intervals, and the second body is provided with a mounting plate.
  • the mounting plate is disposed between the two baffles to form an accommodating groove, so as to accommodate the pole tabs through the accommodating groove, so that the pole tabs It is isolated from the battery casing to prevent the tabs from contacting the casing and causing a short circuit.
  • the mounting plate can be provided with The position of the first pole hole is pulled out from between the two baffles, and then after the battery's pole lug and pole are welded, the position where the pole hole is set on the mounting plate is pushed into the two baffles for assembly. , to prevent the baffle of the first component from affecting the welding of the tabs.
  • Figure 1 is a schematic structural diagram of a battery insulator according to an embodiment of the present application.
  • Figure 2 is an extended view of the first component and the second component of the embodiment of the present application
  • Figure 3 is a partial enlarged view of A in Figure 2;
  • Figure 4 is a schematic structural diagram of the first component of the embodiment of the present application.
  • Figure 5 is a schematic structural diagram of the second component according to the embodiment of the present application.
  • Figure 6 is a schematic structural diagram of the top cover assembly according to the embodiment of the present application.
  • Figure 7 is a cross-sectional view of the top cover assembly according to the embodiment of the present application.
  • Figure 8 is a disassembled schematic diagram of the top cover assembly according to the embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a battery according to an embodiment of the present application.
  • 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 meanings of the above terms in this application can be understood according to the circumstances.
  • 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.
  • a shielding portion is provided on the plastic part between the cover plate and the battery core to insulate the tabs from the casing through the shielding portion.
  • the plastic parts in the related art are integrally formed, and the plastic parts extend toward the side of the battery core to form a shielding portion. The shielding portion will affect the positioning and welding of the poles by the welding equipment, thereby affecting the welding quality between the pole tabs and the poles. .
  • the battery insulator includes a first member 1 and a second member 2.
  • the first member 1 includes a first body 11, One end of the first body 11 facing the second member 2 is provided with two baffles 12 spaced apart.
  • the second member 2 includes a second body 21 .
  • the second body 21 is provided with a mounting plate 22 at one end facing the first body 11 .
  • the mounting plate 22 A first pole hole 221 for the battery pole 4 to pass through is provided therethrough.
  • the mounting plate 22 is movably arranged between the two baffles 12.
  • the mounting plate 22 and the two baffles 12 together form a receiving groove 111, and the The notch of the groove 111 faces the battery core 9 , and the receiving groove 111 is configured to accommodate the tab 90 on the battery core 9 .
  • the battery insulator as a split component of the first component 1 and the second component 2, it is easy to design and produce the first component 1 and the second component 2 respectively, the structure is simpler, and the manufacturing cost is low.
  • the first body 11 is provided with baffles 12 at intervals, and the second body 21 is provided with a mounting plate 22 .
  • the mounting plate 22 is disposed between the two baffles 12 to form an accommodating groove 111 for pole alignment through the accommodating groove 111 .
  • the tabs 90 are stored to form an isolation between the tabs 90 and the casing 8 of the battery, thereby preventing the tabs 90 from contacting the casing 8 to form a short circuit.
  • the mounting plate 22 and the baffle 12 are movably connected, and the pole 4 of the battery is disposed through the first pole hole 221, before welding, it can be The position where the first pole hole 221 is provided on the mounting plate 22 is pulled out from between the two baffles 12 , and then after the battery tab 90 and the pole 4 are welded, the first pole is set on the mounting plate 22 The position of the hole 221 is pushed into the two baffles 12 for assembly to prevent the baffles 12 of the first component 1 from affecting the welding of the tab 90 .
  • baffle 12 when the tab 90 is welded to the pole 4, welding equipment is required to position the welding position of the pole 4, and a baffle 12 is provided on the battery insulator. The baffle 12 will affect the positioning of the welding equipment to the pole 4. positioning.
  • first member 1 and the second member 2 are made of insulating plastic material.
  • first component 1 and the second component 2 can be made of other insulating materials.
  • the mounting plate 22 is slidingly connected to the baffle 12 .
  • the sliding connection has high assembly efficiency and facilitates assembly between the first component 1 and the second component 2 .
  • the mounting plate 22 is provided with a slide groove 222 that extends along the length direction of the installation plate 22 .
  • the two baffles 12 are provided with slide blocks 121 that are adapted to the slide grooves 222 .
  • the slide blocks 121 are slidably disposed on the slide grooves 222 . In the groove 222 , the slider 121 can limit the second member 2 so that the second member 2 can slide relative to the first member 1 .
  • the second member 2 can be pulled relative to the first member 1 along the length direction of the chute 222 so that part of the mounting plate 22 exits the two baffles 12 .
  • the mounting plate 22 corresponds to the first pole hole 221
  • weld the pole 4 and the tab 90 provided on the first pole hole 221 and then push the second member 2 to move in the direction of approaching the first member 1, so that The mounting plate 22 is completely inserted between the two baffles 12 to complete the assembly without disassembling the first component 1 and the second component 2 respectively.
  • the operation is simple and efficient.
  • the chute 222 is disposed on the mounting plate 22.
  • the mounting plate 22 is provided with first limiting portions 223 at opposite ends along the length direction of the chute 222.
  • the first limiting portion 223 is disposed on the mounting plate 22.
  • a limiter 223 is located at an end of the slide groove 222 away from the second body 21. When the first limiter 223 contacts the slider 121, the first limiter 223 can limit the slider 121 from leaving the slider 222 to prevent the slider 121 from leaving the slider 222.
  • the first member 1 and the second member 2 are completely separated. It can be understood that the slider 121 is limited by providing the first limiting portion 223 on the mounting plate 22 so that the mounting plate 22 has a limit position between the baffles 12.
  • the slider 121 includes a second connection part and a guide part.
  • the first end of the connection part is connected to the inner wall of the baffle 12
  • the second end of the connection part is connected to the guide part
  • the slide groove 222 is provided on the mounting plate 22
  • a guide portion is inserted into the slide groove 222 on a side surface away from the opening of the accommodating groove 111 , and the guide portion can guide the mounting plate 22 .
  • slide grooves 222 are provided on both sides of the mounting plate 22 along the width direction, and slide blocks 121 are provided on both baffles 12.
  • the two slide blocks 121 are respectively provided in the two slide grooves 222 to improve Mounting plate 22 sliding stability.
  • a limiting bar 14 is provided on the baffle 12 .
  • the limiting bar 14 and the slider 121 are located on the same side of the baffle 12 , and the limiting bar 14 is disposed toward the mounting plate 22 .
  • the mounting plate 22 will not deviate from the limiting position of the two baffles 12 in the thickness direction of the first member 1 .
  • the limiting strips 14 extend along the length direction of the baffle 12 so that the limiting strips 14 can serve as reinforcing strips to increase the strength of the baffle 12 .
  • a chute 222 is recessed on the inner wall of the baffle 12, and part of the mounting plate 22 is inserted into the chute 222.
  • the structure is simple and easy to manufacture.
  • a chute 222 is provided on the side wall of the mounting plate 22 , a guide block is provided on the side wall of the baffle 12 , and the guide block is disposed in the chute 222 .
  • first component 1 and the second component 2 are rotationally connected.
  • a second limiting part 224 is provided at one end of the mounting plate 22 away from the second body 21 , and a third limiting part 13 is provided between the two baffles 12 .
  • the three limiting portions 13 are spaced apart from the first body 11, and the opposite ends of the third limiting portion 13 are connected to the two baffles 12 respectively.
  • a fourth limiting portion 226 is provided at one end of the mounting plate 22 close to the second body 21 .
  • the fourth limiting portion 226 faces away from the second body 21 and the side of the slider 121 toward the second body 21
  • the fourth limiting portion 226 can limit the movement of the mounting plate 22 in a direction closer to the first body 11 . It can be understood that the second member 2 moves toward the first body 11, and finally the second limiting portion 224 contacts the third limiting portion 13, and the fourth limiting portion 226 contacts the slider 121, so that The second member 2 is locked, and the second member 2 cannot move relative to the first member 1 along the length direction of the slide groove 222 .
  • the fourth limiting portion 226 and the second limiting portion 224 are located on opposite sides of the mounting plate 22 .
  • FIG. 6-8 This application also discloses a top cover assembly, as shown in Figures 6-8, which includes a cover plate 3, a pole 4, a terminal 5 and the battery insulator of any of the above embodiments.
  • the battery insulator and the terminal 5 are located on the cover.
  • the cover plate 3 On the opposite sides of the plate 3, the cover plate 3 is provided with a second pole hole 31 corresponding to the first pole hole 221 on the first member 1.
  • the first end of the pole 4 is connected to the pole lug 90, and the third pole hole 31 of the pole 4 is connected to the pole lug 90.
  • the two ends pass through the first pole hole 221 and the second pole hole 31 in sequence and are connected to the terminal 5 .
  • the top cover assembly uses the battery insulator, and the battery insulator is composed of a first member 1 and a second member 2, and the first member 1 and the second member 2 are slidingly connected, which is easy to install and has high efficiency.
  • the terminal 5 is arranged outside the cover 3 , the first end of the pole 4 is connected to the terminal 5 , and the second end of the pole 4 passes through the first pole hole 221 and the second pole hole 31 in sequence. It is connected to the tabs 90 on the battery core 9 to conduct electrical conduction between the inside and outside of the battery using the top cover assembly, and to provide power to the load device through the terminal 5.
  • the pole 4 includes a body 41 and a pole plate 42 .
  • the pole plate 42 is arranged in the receiving groove 111 .
  • the pole plate 42 includes a first connecting part 421 , a second connecting part 422 and a fuse part 423 , the body 41 is connected to the first connecting part 421, the tab 90 is connected to the second connecting part 422, and the first connecting part 421 and the second connecting part 422 are connected through the fuse part 423.
  • the fuse part 423 has an overcurrent protection function. When the current on the electrode plate 42 is too large, the fuse part 423 will first fuse to disconnect the body 41 and the tab 90, thereby protecting the entire battery and preventing the battery from being damaged. Explosion occurs due to overcurrent.
  • overcurrent refers to overcurrent
  • overcurrent means that the current value exceeds the rated value.
  • the maximum output current of a regulated battery is 30 amps (A).
  • A the maximum output current of a regulated battery
  • the pole plate 42 is provided with first grooves on opposite sides of the fuse portion 423 , and the distance between the groove bottoms of the two first grooves is smaller than the width of the pole plate 42 , so that the fuse portion 423 is formed at the position of the pole plate 42 .
  • the local weak area has a weaker current flow capacity than other locations on the electrode plate 42. Therefore, when the current on the electrode plate 42 is too large, the current cannot pass through the fuse portion 423, causing the temperature of the fuse portion 423 to rise and melt.
  • a through hole 4231 is provided through the fuse portion 423 , and the through hole 4231 is located between the two first grooves.
  • the top cover assembly further includes an insulating sheet 7 , the insulating sheet 7 is disposed on a side of the pole plate 42 facing away from the cover 3 , and the insulating sheet 7 covers at least a side of the first connecting portion 421 and the fuse portion 423 facing away from the cover 3 . side surface, so as to form insulation between the first connection part 421 and the fuse part 423 and the tab 90 to prevent the first connection part 421 and the fuse part 423 from being directly connected to the tab 90 .
  • the insulating sheet 7 can be used to prevent the molten liquid metal from falling into the core package. When the fuse portion 423 is blown, the molten liquid metal is blocked by the insulating sheet 7 to prevent the molten liquid metal from falling into the core package and causing a short circuit and thermal runaway of the battery. .
  • the side of the first connecting portion 421 and the fuse portion 423 facing away from the cover 3 is the first side
  • the side of the second connecting portion 422 facing away from the cover 3 is the second side.
  • the side surface and the second side surface are spaced apart along the thickness direction of the electrode plate 42, the insulating sheet 7 is in contact with the first side surface, and the side surface of the insulation sheet 7 away from the electrode plate 42 is flush with the second side surface.
  • a mounting position for installing the insulating sheet 7 is formed on the first side. When the insulating sheet 7 is installed on the mounting position, the insulating sheet 7 will not partially protrude relative to the second connecting portion 422 .
  • the mounting plate 22 is provided with a limiting protrusion 225 on one side facing the pole plate 42.
  • the pole plate 42 is provided with a through hole 4231, and the limiting protrusion 225 is inserted into the through hole 4231 to realize the connection between the pole plate 42 and the pole plate 42.
  • the second components 2 are connected to each other to prevent the second components 2 from loosening after the top cover assembly is assembled.
  • the ratio of the length and width of the rectangle is Y, 1 ⁇ Y ⁇ 10.
  • the torsion resistance of pole 4 is ensured.
  • the pole 4 is used in special-shaped batteries, for example, batteries with a small width and a large length. The size of the pole 4 can ensure the connection area between the pole 4 and the terminal 5 or the load device within this range.
  • an identification code is set on the side of the cover 3 facing the battery insulator.
  • the first body 11 is provided with a code scanning window 112 corresponding to the identification code, so that the operator does not need to insulate the cover 3 from the battery. After the parts are separated, the identification code can be scanned and verified through the code scanning window 112, which is simple to operate and reduces the effective space occupied by the identification code on the cover 3.
  • the identification code is a QR code or a barcode.
  • the top cover assembly is provided with two groups, one of which is a positive top cover assembly and the other is a negative top cover assembly.
  • a plastic part 6 is provided between the cover plate 3 and the terminal 5, and the plastic part 6 is an insulating plastic part to form insulation between the terminal 5 and the cover plate 3 to prevent them from conducting electricity.
  • the cover 3 is provided with an explosion-proof hole 32
  • the second body 21 is provided with a vent hole corresponding to the explosion-proof hole 32.
  • the explosion-proof hole 32 is provided with an explosion-proof valve and an explosion-proof disc. When the internal air pressure of the battery is too high, the explosion-proof valve will It opens under pressure so that the gas inside the battery can escape from the vent hole.
  • six vent holes are provided at intervals on the second body 21 .
  • the cover plate 3 is provided with a liquid injection hole. After the top cover assembly is assembled, the electrolyte can be injected into the casing 8 through the liquid injection hole.
  • a second groove is provided around the liquid injection hole, and the second groove is arranged around the outside of the liquid injection hole.
  • the traditional sinking platform is replaced by the second groove being provided around the liquid injection hole to solve the problem of sinking. Table edge collapse problem.
  • a plastic part 6 is provided between the cover plate 3 and the terminal 5, and the plastic part 6 is a conductive plastic part, so that the connection between the terminal 5 and the cover plate 3 is more stable and has better conductivity.
  • this application also discloses a battery, including a casing 8, a battery core 9 and a top cover assembly of any of the above embodiments.
  • the battery core 9 is disposed in the casing 8, and the top cover assembly is disposed at the opening of the casing 8.
  • the tab 90 of the battery core 9 is connected to the pole 4
  • the tab 90 is located in the receiving groove 111 .
  • This battery uses the above-mentioned top cover assembly so that the tabs 90 can be stored in the position of the battery insulator. That is, the baffle 12 separates the tabs 90 from the casing 8 to prevent the tabs 90 from being connected to the casing 8. short circuit. And the first component 1 and the second component 2 are slidingly connected.
  • the mounting plate 22 can be pulled out from between the two baffles 12, and then the pole lug 90 and the pole post 4 are welded by welding equipment. This prevents the baffle 12 from affecting the welding equipment. After the pole post 4 and the pole lug 90 are welded, the installation plate 22 is pushed between the two baffles 12. The operation is simple and efficient.
  • a step surface 30 is provided on the periphery of the cover plate 3 .
  • the step surface 30 abuts the open end of the housing 8 , and part of the cover plate 3 is inserted into the housing 8 .
  • the thickness of the cover 3 is H
  • the distance between the side of the cover 3 adjacent to the battery core 9 and the step surface 30 is D
  • D ⁇ 2/3H the distance between the side of the cover 3 adjacent to the battery core 9 and the step surface 30
  • the pole tab 90 is provided with at least one bent portion 91 .
  • the pole tab 90 is provided with only one bending portion 91, the pole tab 90 is bent in a C-shape.
  • the pole tab 90 is bent in a Z-shape.
  • the pole tab 90 is bent into three structures.
  • the first structure is: the positive pole tab is bent in a C shape, and the negative pole tab is bent in a Z shape;
  • the second structure is: the positive pole tab is bent in a Z shape,
  • the negative electrode ear is bent in a C shape;
  • the third structure is: both the positive electrode ear and the negative electrode ear are bent in a Z shape.

Abstract

本申请涉及一种电池绝缘件、顶盖组件及电池，其中，电池绝缘件包括第一构件和第二构件，第一构件包括第一主体，第一主体朝向第二构件的一端间隔设置有两个挡板，第二构件包括第二主体，安装朝向第一主体的一端设置有安装板，安装板贯穿设置有供电池的极柱穿过的第一极柱孔，安装板活动设置在两个挡板之间，安装板与两个挡板共同形成容纳槽，容纳槽用于容纳与电芯连接的极耳。该电池绝缘件采用分体式设计，结构简单，制造成本低，能提高应用该电池绝缘件的电池的安全性。

Description

电池绝缘件、顶盖组件及电池
本公开要求在2022年12月23日提交中国专利局、申请号为202223467244.X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，例如涉及一种电池绝缘件、顶盖组件及电池。
背景技术
在电池生产过程中，一般需将电芯上的极片进行折弯形成极耳，然后再将极耳与顶盖组件的极板焊接。但是折弯形成的极耳稳定性较差，容易出现松散现象而导致极耳与电池外壳接触形成短路。因此为了防止极耳与外壳接触，在盖板与电芯之间的塑胶件上设置遮挡部，以通过遮挡部将极耳与外壳进行绝缘隔绝。但是相关技术存在以下缺陷：塑胶件为一体成型，且塑胶件朝向电芯的一侧延伸形成有遮挡部，遮挡部会遮挡焊接设备的焊头伸入至极柱与极耳之间的焊接位置，从而影响焊接设备对极柱的定位以及焊接，进而影响极耳与极柱之间的焊接质量。
发明内容
本申请提供了一种电池绝缘件，其结构简单，采用分体式设计。
本申请还提供了一种顶盖组件，其结构简单，装配效率高。
本申请还提供了一种电池，其结构简单，安全性较高。
第一方面，本申请实施例提供了一种电池绝缘件，设于盖板与电芯之间，所述电池绝缘件包括第一构件和第二构件，所述第一构件包括第一主体，所述第一主体朝向所述第二构件的一端间隔设置有两个挡板，所述第二构件包括第二主体，所述第二主体朝向所述第一主体的一端设置有安装板，所述安装板贯穿设置有供电池的极柱穿过的第一极柱孔，所述安装板活动设置在两个所述挡板之间，所述安装板与两个所述挡板共同形成容纳槽，所述容纳槽设置为容纳所述电芯的极耳。
在一实施例中，所述安装板与所述挡板滑动连接。
在一实施例中，每个所述挡板和所述安装板两者中的一者设置有滑槽，所 述滑槽沿所述安装板的长度方向延伸，另一者设置有与所述滑槽适配的滑块，所述滑块滑动设置在所述滑槽内。
在一实施例中，所述滑槽设置在所述安装板上，所述安装板设置有第一限位部，所述第一限位部位于沿所述滑槽长度方向远离所述第二主体的一端，当所述第一限位部与所述滑块抵接时，所述第一限位部能限制所述滑块脱离所述滑槽。
在一实施例中，所述安装板远离所述第二主体的一端设置有第二限位部，两个所述挡板之间设置有第三限位部，所述第三限位部与所述第一主体间隔，当所述第二限位部远离所述第二主体的一侧面与所述第三限位部邻近第一主体的一侧面抵接时，所述第三限位部能限制所述安装板朝远离所述第一主体的方向移动；和/或，
所述安装板靠近第二主体的一端设置有第四限位部，当所述第四限位部背离所述第二主体的一侧面与所述滑块朝向所述第二主体的一侧面抵接时，所述第四限位部能限制所述安装板朝靠近所述第一主体的方向移动。
在一实施例中，每个所述挡板上均设置有限位条，所述限位条与所述滑块位于所述挡板的同一侧面，且所述限位条朝向所述安装板设置。
第二方面，本申请实施例提供了一种顶盖组件，包括盖板、极柱、端子和上述的电池绝缘件，所述电池绝缘件与所述端子位于所述盖板的相对两侧，所述盖板对应所述第一构件上的第一极柱孔设置有第二极柱孔，所述极柱的第一端与所述极耳连接，所述极柱的第二端依次贯穿所述第一极柱孔和所述第二极柱孔与所述端子连接。
在一实施例中，所述极柱包括本体和极板，所述极板设置在所述容纳槽内，所述极板包括第一连接部、第二连接部和熔断部，所述本体与所述第一连接部，所述极耳与所述第二连接部连接，所述第一连接部和所述第二连接部通过所述熔断部连接。
在一实施例中，所述顶盖组件还包括绝缘片，所述绝缘片设置在所述极板背离所述盖板的一侧面，且所述绝缘片至少覆盖所述第一连接部和所述熔断部背离所述盖板的一侧面。
在一实施例中，所述安装板朝向所述极板的一侧面设置有限位凸起，所述 极板上设置有通孔，所述限位凸起插设在所述通孔内。
在一实施例中，所述本体的截面呈矩形，所述本体的长边与宽边的比值为X，1＜X＜10；或，
所述本体的截面呈椭圆形，所述本体的长轴与短轴的比值为Y，1＜Y＜10。
第三方面，本申请实施例提供了一种电池，其包括外壳、电芯和上述的电池绝缘件，所述顶盖组件设置在所述外壳的开口处，所述电芯的极耳与所述极柱连接，且所述极耳位于所述容纳槽内。
在一实施例中，所述盖板的周部设置有台阶面，所述台阶面与所述外壳的开口端抵接，且部分所述盖板插设在所述外壳内，所述盖板的厚度为H，所述盖板邻近所述电芯的一侧面与所述台阶面之间的间距为D，D＜2/3H。
在一实施例中，所述极耳至少设置一个折弯部。
本申请的有益效果为：通过将电池绝缘件采用第一构件和第二构件的分体式组成，便于分别对第一构件和第二构件进行设计生产，结构更加简单，制造成本低。在第一主体上间隔设置有挡板，在第二主体上设置有安装板，将安装板设置在两个挡板之间形成容纳槽，以通过容纳槽对极耳进行收纳，以使极耳与电池的外壳之间形成隔绝，防止极耳与外壳接触形成短路。此外，应用该电池绝缘件的电池在装配过程中，由于安装板与挡板为活动连接，且电池的极柱贯穿设置在第一极柱孔内，在焊接前，可以先将安装板设置有第一极柱孔的位置从两个挡板之间拉出，然后将电池的极耳与极柱焊接完成后，再将安装板上设置极柱孔的位置推入两个挡板内进行装配，避免第一构件的挡板影响极耳的焊接。
附图说明
下面根据附图和实施例对本申请作说明。
图1为本申请实施例的电池绝缘件的结构示意图；
图2为本申请实施例的第一构件和第二构件的伸展示意图；
图3为图2的A处的局部放大图；
图4为本申请实施例的第一构件的结构示意图；
图5为本申请实施例的第二构件的结构示意图；
图6为本申请实施例的顶盖组件的结构示意图；
图7为本申请实施例的顶盖组件的剖视图；
图8为本申请实施例的顶盖组件的拆解示意图；
图9为本申请实施例的电池的结构示意图。
图中：
1、第一构件；11、第一主体；111、容纳槽；112、扫码窗口；12、挡板；121、滑块；13、第三限位部；14、限位条；2、第二构件；21、第二主体；22、安装板；221、第一极柱孔；222、滑槽；223、第一限位部；224、第二限位部；225、限位凸起；226、第四限位部；3、盖板；30、台阶面；31、第二极柱孔；32、防爆孔；4、极柱；41、本体；42、极板；421、第一连接部；422、第二连接部；423、熔断部；4231、通孔；5、端子；6、塑胶件；7、绝缘片；8、外壳；9、电芯；90、极耳；91、折弯部。
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，可以根据情况理解上述术语在本申请中的含义。
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。
在电池生产过程中，一般需将电芯上的极片进行折弯形成极耳，然后将极耳与顶盖组件的极板焊接。但是折弯形成的极耳稳定性较差，容易出现松散的现象而导致极耳与电池外壳接触形成短路。因此为了防止极耳与外壳接触，在盖板与电芯之间的塑胶件上设置遮挡部，以通过遮挡部将极耳与外壳进行绝缘隔绝。但是相关技术的塑胶件为一体成型，且塑胶件朝向电芯的一侧延伸形成有遮挡部，遮挡部会影响焊接设备对极柱的定位以及焊接，从而影响极耳与极柱之间的焊接质量。
为解决上述问题，如图1、图2和图7所示，本申请公开一种电池绝缘件，电池绝缘件包括第一构件1和第二构件2，第一构件1包括第一主体11，第一主体11朝向第二构件2的一端间隔设置有两个挡板12，第二构件2包括第二主体21，第 二主体21朝向第一主体11的一端设置有安装板22，安装板22贯穿设置有供电池的极柱4穿过的第一极柱孔221，安装板22活动设置在两个挡板12之间，安装板22与两个挡板12共同形成容纳槽111，且容纳槽111的槽口朝向电芯9，容纳槽111设置为容纳电芯9上的极耳90。通过将电池绝缘件采用第一构件1和第二构件2的分体式组成，便于分别对第一构件1和第二构件2进行设计生产，结构更加简单，制造成本低。在第一主体11上间隔设置有挡板12，在第二主体21上设置有安装板22，将安装板22设置在两个挡板12之间形成容纳槽111，以通过容纳槽111对极耳90进行收纳，以使极耳90与电池的外壳8之间形成隔绝，防止极耳90与外壳8接触形成短路。此外，应用该电池绝缘件的电池在装配过程中，由于安装板22与挡板12为活动连接，且电池的极柱4贯穿设置在第一极柱孔221内，在焊接前，可以先将安装板22设置有第一极柱孔221的位置从两个挡板12之间拉出，然后将电池的极耳90与极柱4焊接完成后，再将安装板22上设置第一极柱孔221的位置推入两个挡板12内进行装配，避免第一构件1的挡板12影响极耳90的焊接。
需要说明的是，极耳90与极柱4焊接时，需要焊接设备对极柱4焊接位置进行定位，而在电池绝缘件上设置有挡板12，挡板12会影响焊接设备对极柱4的定位。
可选地，第一构件1和第二构件2采用绝缘塑胶材料制成。当然，在其他实施例中，第一构件1和第二构件2可以采用其他绝缘材料制成。
本实施例中，如图2和图3所示，安装板22与挡板12滑动连接，滑动连接的装配效率较高，便于第一构件1和第二构件2之间的装配。示例性地，安装板22设置有滑槽222，滑槽222沿安装板22的长度方向延伸，两个挡板12设置有与滑槽222适配的滑块121，滑块121滑动设置在滑槽222内，以使滑块121可以对第二构件2进行限位，从而使得第二构件2能相对第一构件1滑动。在使用过程中，可以将第二构件2沿滑槽222的长度方向相对第一构件1拉动，以使部分安装板22退出两个挡板12，当安装板22对应第一极柱孔221的位置脱出两个挡板12后，将设置在第一极柱孔221上的极柱4与极耳90焊接后，再推动第二构件2朝与第一构件1相互靠近的方向移动，以使安装板22完全插入两块挡板12之间，从而完成装配，无需分别对第一构件1和第二构件2进行拆分，操作简单且效率高。
示例性地，滑槽222设置在安装板22上，安装板22上沿滑槽222长度方向相对两端设置有第一限位部223，安装板22上设置有第一限位部223，第一限位部223位于滑槽222远离第二主体21的一端，当第一限位部223与滑块121抵接时，第一限位部223能限制滑块121脱离滑槽222，以防止在拉动第二构件2过程中第一构件1和第二构件2完全脱离。可以理解的是，通过在安装板22上设置第一限位部223对滑块121进行限位，以使安装板22在挡板12之间具有极限位置，当拉动第二构件2相对第一构件1相互远离的方向移动至极限位置时，滑块121与第一限位部223抵接，第一限位部223对滑块121进行限位，让第二构件2无法沿滑槽222的长度方向移动继续滑动。
示例性地，滑块121包括第二连接部和导向部，连接部的第一端与挡板12的内侧壁连接，连接部的第二端与导向部连接，滑槽222设置在安装板22背离容纳槽111的槽口的一侧面，导向部插设在滑槽222内，导向部可以对安装板22进行导向。
可选地，在安装板22沿宽度方向的两侧均设置有滑槽222，两块挡板12上均设置有滑块121，两个滑块121分别设置在两个滑槽222内，提高安装板22滑动稳定性。
示例性地，如图4所示，在挡板12上设置有限位条14，限位条14与滑块121位于挡板12的同一侧面，且限位条14朝向安装板22设置。在限位条14与滑块121共同作用下，以使安装板22不会从第一构件1的厚度方向脱离出两个挡板12的限位。另一方面，限位条14沿挡板12的长度方向延伸，以使限位条14可作为加强条提高挡板12的强度。
一实施例中，在挡板12的内侧壁上凹设有滑槽222，部分安装板22插设在滑槽222内，结构简单，制造方便。
一实施例中，在安装板22的侧壁上设置有滑槽222，在挡板12的侧壁上设置有导向块，导向块设置在滑槽222内。
另一实施例中，第一构件1和第二构件2转动连接。
本实施例中，如图4和图5所示，安装板22远离第二主体21的一端设置有第二限位部224，两个挡板12之间设置有第三限位部13，第三限位部13与第一主体11间隔，第三限位部13的相对两端分别与两个挡板12连接，当第二限位部224远离第二主体21的一侧面与第三限位部13邻近第一主体11的一侧面抵接时，第二限位部224能限制安装板22朝远离第一主体11的方向移动。在一实施例中，安装板22靠近第二主体21的一端设置有第四限位部226，当第四限位部226背离第二主体21的一侧面与滑块121朝向第二主体21的一侧面抵接时，第四限位部226能限制安装板22朝靠近第一主体11的方向移动。可以理解的是，第二构件2朝向第一主体11移动，并最终第二限位部224与第三限位部13抵接，以及第四限位部226与滑块121抵接，以使第二构件2被锁紧，沿滑槽222的长度方向上，第二构件2无法相对第一构件1移动。
示例性地，第四限位部226和第二限位部224位于安装板22相对两侧面。
本申请还公开一种顶盖组件，如图6-图8所示，其包括盖板3、极柱4、端子5和上述任一实施例的电池绝缘件，电池绝缘件与端子5位于盖板3的相对两侧，盖板3对应第一构件1上的第一极柱孔221设置有第二极柱孔31，极柱4的第一端与极耳90连接，极柱4的第二端依次贯穿第一极柱孔221和第二极柱孔31与端子5连接。该顶盖组件应用该电池绝缘件，而该电池绝缘件通过第一构件1和第二构件2组成，且第一构件1和第二构件2滑动连接，安装方便，且效率高。可以理解的是，端子5设置在盖板3的外侧，极柱4的第一端与端子5连接，极柱4的第二端依次穿过第一极柱孔221和第二极柱孔31与电芯9上的极耳90连接，以使应用该 顶盖组件的电池的内外电导通，并通过端子5为负载设备供电。
示例性地，如图8所示，极柱4包括本体41和极板42，极板42设置在容纳槽111内，极板42包括第一连接部421、第二连接部422和熔断部423，本体41与第一连接部421，极耳90与第二连接部422连接，第一连接部421和第二连接部422通过熔断部423连接。熔断部423具有过流保护作用，当极板42上的电流过大时，熔断部423会首先发生熔断，以使本体41与极耳90之间断开连接，从而对整个电池进行保护，防止电池发生过流现象而爆炸。
需要说明的是，过流指是过电流，过电流表示电流值超过额定值。例如一个稳压电池最大输出电流是30安培(A)，当电池的输出电流超过30A时，则出现过流现象。
示例性地，极板42在熔断部423相对两侧设置有第一凹槽，两个第一凹槽的槽底之间的间距小于极板42的宽度，以使在熔断部423的位置形成局部薄弱区，薄弱区相对极板42的其他位置的电流流通能力更弱，因此在极板42上的电流过大时，电流无法通过熔断部423，导致熔断部423的温度升高而熔化。
在一实施例中，在熔断部423贯穿设置有通孔4231，通孔4231位于两个第一凹槽之间。通过在熔断部423的位置同时设置第一凹槽和通孔4231，以使熔断部423的面积更小，以使该电池对过流现象具有更好的保护效果。
示例性地，顶盖组件还包括绝缘片7，绝缘片7设置在极板42背离盖板3的一侧面，且绝缘片7至少覆盖第一连接部421和熔断部423背离盖板3的一侧面，以使第一连接部421以及熔断部423与极耳90之间形成绝缘，防止第一连接部421以及熔断部423直接与极耳90连接。此外，绝缘片7可以用于防止熔融液态金属掉落芯包，当熔断部423发生熔断时，熔融液态金属被绝缘片7进行遮挡，避免融液态金属掉落芯包而造成电池发生短路热失控。
为了让顶盖组件结构更加紧凑，在第一连接部421与熔断部423背离盖板3的一侧面为第一侧面，第二年连接部422背离盖板3的侧面为第二侧面，第一侧面与第二侧面沿极板42的厚度方向间隔，绝缘片7与第一侧面抵接，且绝缘片7背离极板42的侧面与第二侧面平齐。在该设计中，在第一侧面形成了用于安装绝缘片7的安装位，将绝缘片7安装在安装位上时，绝缘片7不会相对第二连接部422局部凸出。
示例性地，安装板22朝向极板42的一侧面设置有限位凸起225，极板42上设置有通孔4231，限位凸起225插设在通孔4231内，以实现极板42与第二构件2之间连接，防止顶盖组件装配完成后第二构件2产生松动。
可选地，当本体41的截面呈矩形时，矩形的长与宽的比值为X，1＜X＜10；当本体41的截面呈椭圆形时，椭圆形的长轴与短轴的比值为Y，1＜Y＜10。该设计中，保证了极柱4的抗扭能力。且极柱4应用于异形电池中，例如，电池的宽度较小，长度较大的电池，极柱4的尺寸在该范围内能保证极柱4与端子5或负载设备的连接面积。
为了便于电池生产后的管理，在盖板3朝向电池绝缘件的一侧设置标识码，第一主体11对应标识码设置有扫码窗口112，以使作业人员可以无需将盖板3与电池绝缘件分离，便可通过扫码窗口112对标识码进行扫码验证，操作简单，且减少标识码占用盖板3的有效空间。例如，标识码为二维码或条形码。
本实施例中，顶盖组件设置有两组，其中一组为正极顶盖组件，另一组为负极顶盖组件。
在正极顶盖组件中，盖板3与端子5之间设置有塑胶件6，且该塑胶件6为绝缘塑胶件，以使端子5与盖板3之间形成绝缘，防止两者导电。在盖板3上设置有防爆孔32，第二主体21上设置对应防爆孔32设置有泄气孔，在防爆孔32上设置有防爆阀和防爆片，当电池内部气压过大时，防爆阀会受压而打开，以使电池内部的气体可以从泄气孔进行泄气。例如，在第二主体21间隔设置有六个泄气孔。
在负极顶盖组件中，盖板3上设置有注液孔，顶盖组件装配完成后，可以通过注液孔将电解液注入外壳8内。示例性地，在注液孔的周部设置第二凹槽，第二凹槽环绕设置在注液孔外，通过在注液孔周部设置第二凹槽代替传统的沉台，以解决沉台边缘塌陷问题。在盖板3和端子5之间设置有塑胶件6，且该塑胶件6为导电塑胶件，以使端子5和盖板3之间的连接稳定性更高，导电性更好。
如图9所示，本申请还公开一种电池，包括外壳8、电芯9和上述任意实施例的顶盖组件，电芯9设置在外壳8内，顶盖组件设置在外壳8的开口处，电芯9的极耳90与极柱4连接，且极耳90位于容纳槽111内。该电池通过应用上述的顶盖组件，以使在电池绝缘件的位置可以对极耳90进行收纳，也就是挡板12将极耳90与外壳8进行间隔，防止极耳90与外壳8连接而短路。且该第一构件1和第二构件2为滑动连接，在焊接时，可以将安装板22从两块挡板12之间拉出，然后通过焊接设备对极耳90与极柱4进行焊接，避免了挡板12影响焊接设备，极柱4与极耳90焊接完成后，在将安装板22推入两块挡板12之间，操作简单且高效。
示例性地，盖板3的周部设置有台阶面30，台阶面30与外壳8的开口端抵接，且部分盖板3插设在外壳8内。
示例性地，盖板3的厚度为H，盖板3邻近电芯9的侧面与台阶面30之间的间距为D，D＜2/3H，该设计中，保证了盖板3与外壳8连接位置的强度。
本实施例中，极耳90至少设置有一个折弯部91，通过在极耳90上设置折弯部91，以减小极耳90的体积，以便于容纳槽111对极耳90进行收纳。当极耳90仅设置一个折弯部91时，极耳90呈C型折弯，当极耳90设置有两个折弯部91时，极耳90呈Z型折弯。示例性地，极耳90折弯形成有三种结构，第一种结构为：正极耳是C字形弯折、负极耳是Z字形弯折；第二种结构为：正极耳是Z字形弯折，负极耳是C字形弯折；第三种结构为：正极耳、负极耳均是Z字形弯折。该极耳弯折组合有利于芯包入壳后极耳90与顶盖的焊接。
于本文的描述中，需要理解的是，术语“上”、“下”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。
在本说明书的描述中，参考术语“一实施例”等的描述意指结合该实施例的特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体。

Claims (14)

  1. 一种电池绝缘件，设于盖板(3)与电芯(9)之间，包括第一构件(1)和第二构件(2)，所述第一构件(1)包括第一主体(11)，所述第一主体(11)朝向所述第二构件(2)的一端间隔设置有两个挡板(12)，所述第二构件(2)包括第二主体(21)，所述第二主体(21)朝向所述第一主体(11)的一端设置有安装板(22)，所述安装板(22)贯穿设置有供电池的极柱(4)穿过的第一极柱孔(221)，所述安装板(22)活动设置在两个所述挡板(12)之间，所述安装板(22)与两个所述挡板(12)共同形成容纳槽(111)，所述容纳槽(111)设置为容纳所述电芯(9)的极耳(90)。
  2. 根据权利要求1所述的电池绝缘件，其中，所述安装板(22)与所述挡板(12)滑动连接。
  3. 根据权利要求2所述的电池绝缘件，其中，每个所述挡板(12)和所述安装板(22)两者中的一者设置有滑槽(222)，所述滑槽(222)沿所述安装板(22)的长度方向延伸，每个所述挡板(12)和所述安装板(22)两者中的另一者设置有与所述滑槽(222)适配的滑块(121)，所述滑块(121)滑动设置在所述滑槽(222)内。
  4. 根据权利要求3所述的电池绝缘件，其中，所述滑槽(222)设置在所述安装板(22)上，所述安装板(22)设置有第一限位部(223)，所述第一限位部(223)位于沿所述滑槽(222)长度方向远离所述第二主体(21)的一端，当所述第一限位部(223)与所述滑块(121)抵接时，所述第一限位部(223)能限制所述滑块(121)脱离所述滑槽(222)。
  5. 根据权利要求3所述的电池绝缘件，其中，所述安装板(22)远离所述第二主体(21)的一端设置有第二限位部(224)，两个所述挡板(12)之间设 置有第三限位部(13)，所述第三限位部(13)与所述第一主体(11)间隔，当所述第二限位部(224)远离所述第二主体(21)的一侧面与所述第三限位部(13)邻近第一主体(11)的一侧面抵接时，所述第三限位部(13)能限制所述安装板(22)朝远离所述第一主体(11)的方向移动；和/或，
    所述安装板(22)靠近第二主体(21)的一端设置有第四限位部(226)，当所述第四限位部(226)背离所述第二主体(21)的一侧面与所述滑块(121)朝向所述第二主体(21)的一侧面抵接时，所述第四限位部(226)能限制所述安装板(22)朝靠近所述第一主体(11)的方向移动。
  6. 根据权利要求3所述的电池绝缘件，其中，每个所述挡板(12)上均设置有限位条(14)，所述限位条(14)与所述滑块(121)位于所述挡板(12)的同一侧面，且所述限位条(14)朝向所述安装板(22)设置。
  7. 一种顶盖组件，包括盖板(3)、极柱(4)和端子(5)，所述顶盖组件还包括如权利要求1-6任一项所述电池绝缘件，所述电池绝缘件与所述端子(5)位于所述盖板(3)的相对两侧，所述盖板(3)对应所述第一构件(1)上的第一极柱孔(221)设置有第二极柱孔(31)，所述极柱(4)的第一端与所述极耳(90)连接，所述极柱(4)的第二端依次贯穿所述第一极柱孔(221)和所述第二极柱孔(31)与所述端子(5)连接。
  8. 根据权利要求7所述的顶盖组件，其中，所述极柱(4)包括本体(41)和极板(42)，所述极板(42)设置在所述容纳槽(111)内，所述极板(42)包括第一连接部(421)、第二连接部(422)和熔断部(423)，所述本体(41)与所述第一连接部(421)，所述极耳(90)与所述第二连接部(422)连接，所述第一连接部(421)和所述第二连接部(422)通过所述熔断部(423)连接。
  9. 根据权利要求8所述的顶盖组件，所述顶盖组件还包括绝缘片(7)，所述绝缘片(7)设置在所述极板(42)背离所述盖板(3)的一侧面，且所述绝缘片(7)至少覆盖所述第一连接部(421)和所述熔断部(423)背离所述盖板(3)的一侧面。
  10. 根据权利要求8所述的顶盖组件，其中，所述安装板(22)朝向所述极板(42)的一侧面设置有限位凸起(225)，所述极板(42)上设置有通孔(4231)，所述限位凸起(225)插设在所述通孔(4231)内。
  11. 根据权利要求8所述的顶盖组件，其中，所述本体(41)的截面呈矩形，所述本体(41)的长边与宽边的比值为X，1＜X＜10；或，
    所述本体(41)的截面呈椭圆形，所述本体(41)的长轴与短轴的比值为Y，1＜Y＜10。
  12. 一种电池，包括外壳(8)和电芯(9)，所述电芯(9)设置在所述外壳(8)内，所述电池还包括如权利要求7所述的顶盖组件，所述顶盖组件设置在所述外壳(8)的开口处，所述电芯(9)的极耳(90)与所述极柱(4)连接，且所述极耳(90)位于所述容纳槽(111)内。
  13. 据权利要求12所述的电池，其中，所述盖板(3)的周部设置有台阶面(30)，所述台阶面(30)与所述外壳(8)的开口端抵接，且部分所述盖板(3)插设在所述外壳(8)内，所述盖板(3)的厚度为H，所述盖板(3)邻近所述电芯(9)的一侧面与所述台阶面(30)之间的间距为D，D＜2/3H。
  14. 据权利要求12所述的电池，其中，所述极耳(90)至少设置一个折弯部(91)。
PCT/CN2023/070385 2022-12-23 2023-01-04 电池绝缘件、顶盖组件及电池 WO2023207217A1 (zh)

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