WO2024000795A1 - 电池单体、电池和用电设备 - Google Patents

电池单体、电池和用电设备 Download PDF

Info

Publication number
WO2024000795A1
WO2024000795A1 PCT/CN2022/116277 CN2022116277W WO2024000795A1 WO 2024000795 A1 WO2024000795 A1 WO 2024000795A1 CN 2022116277 W CN2022116277 W CN 2022116277W WO 2024000795 A1 WO2024000795 A1 WO 2024000795A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
sealing member
battery cell
housing
injection hole
Prior art date
Application number
PCT/CN2022/116277
Other languages
English (en)
French (fr)
Inventor
朱嘉伟
阎晓洁
宋英俊
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2024000795A1 publication Critical patent/WO2024000795A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • 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
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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, specifically to a battery cell, a battery and electrical equipment.
  • Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection.
  • battery technology is an important factor related to their development.
  • This application provides a battery cell, a battery and electrical equipment.
  • the technical solution provided by this application can improve the service life of the battery.
  • the application provides a battery cell, including: a casing, including a wall portion, the wall portion is provided with a liquid injection hole for injecting electrolyte into the casing; a sealing member to seal the liquid injection Hole; a first protective member covering at least one end of the sealing member close to the inside of the housing to isolate the sealing member from the electrolyte in the housing.
  • the sealing member and the electrolyte in the casing are isolated from each other by providing a first protective member to prevent the sealing member from being corroded due to contact between the sealing member and the electrolyte, and the electrolyte leaking from the corroded area, causing the battery to Has a high service life.
  • the sealing member has external threads
  • the liquid injection hole has internal threads
  • the sealing member is threadedly connected to the liquid injection hole.
  • the sealing member is threadedly connected to the liquid injection hole, which facilitates the disassembly and assembly of the sealing member, so that the battery cell can be conveniently circulated for liquid injection; at the same time, since the first protection member can prevent the sealing member from contacting the electrolyte, The external thread is not corroded by the electrolyte, ensuring that the seal can be removed from the housing smoothly and safely.
  • the seal includes a first section and a second section connected to each other, the first section being closer to the interior of the housing than the second section, and the first section The diameter is smaller than the diameter of the second section, and the second section is threadedly connected to the liquid injection hole; the first protective member covers at least one end of the first section away from the second section.
  • the second section of the seal is threadedly connected to the liquid injection hole to ensure that the seal tightly seals the liquid injection hole;
  • the first section is closer to the inside of the shell than the second section and has a smaller diameter than the second section to ensure that at least
  • the first protective member covering the end of the first section can be placed in the housing along with the sealing member to isolate the sealing member from the electrolyte.
  • the first protection member includes a bottom wall and a side wall, the side wall is surrounding the bottom wall, the bottom wall covers the end surface of the first section, and the The side wall covers at least a portion of the outer circumferential surface of the first section.
  • the bottom wall of the first protective member covers the end surface of the first section, and the side wall covers at least a part of the outer peripheral surface of the first section, so as to effectively isolate the electrolyte in the housing and the sealing member from each other and prevent the sealing member from being damaged. Electrolyte corrosion.
  • the side wall is threadedly connected to the first section.
  • the side wall is threadedly connected to the first section, so that the first protective member can be easily assembled with the sealing member, and the stability of the connection between the first protective member and the sealing member is ensured.
  • the first protection member further includes a first convex portion, the first convex portion is provided on the outer peripheral surface of the side wall, and the first convex portion is used to abut against the side wall.
  • the side of the wall facing the interior of the housing.
  • the first protrusion contacts the inner side of the wall of the casing, which can withstand the extrusion force of the gas generated due to the electrochemical reaction inside the battery cell, and reduce the loosening of the seal due to gas extrusion, causing the seal to become loose. Risk of seal failure.
  • the hole wall of the liquid injection hole is provided with a channel, the channel extends along the axial direction of the liquid injection hole, and the channel is used for the first protrusion to pass through the wall.
  • the first protrusion of the first protective member when assembling the seal, can easily enter the housing through the channel, and then the seal is rotated by twisting the first protrusion, so that the first protrusion can abut. on the inside of the wall.
  • the number of the first protrusions is at least two, and the at least two first protrusions are distributed at intervals along the circumference of the side wall; the number of the channels is the same as the number of the first protrusions. The number of protrusions is equal, and the channels correspond to the first protrusions one by one.
  • the resistance of the sealing member to gas extrusion inside the battery can be improved, and the risk of loosening of the sealing member due to gas extrusion, resulting in sealing failure of the sealing member, can be effectively reduced.
  • the battery cell further includes: a second protective member located between the first protective member and the second section, the second protective member including a body and a second convex portion, so The body is sleeved on the first section, the second protrusion is provided on the outer peripheral surface of the body, and the second protrusion is embedded in the channel to block the channel.
  • the protection of the first section can be improved to prevent the electrolyte from contacting the sealing member; at the same time, by providing a second protrusion, the channel is blocked to prevent the electrolyte from leaking through the channel.
  • the first protective member is fixed to the sealing member, and the second protective member rotates with the sealing member about a central axis of the sealing member.
  • the first protective member is fixed to the sealing member so as to enter the interior of the housing when the sealing member is assembled in the housing to isolate the electrolyte and the sealing member.
  • the second protective member and the sealing member can rotate relative to each other. By rotating the second protective member, the circumferential position of the second convex portion of the sealing member can be adjusted, so that the second convex portion can smoothly enter the channel to block the channel.
  • the sealing member is a metal piece, and both the first protective member and the second protective member are rubber pieces.
  • the sealing member is a metal part to ensure that the sealing member has sufficient strength and meets the sealing assembly requirements.
  • the first protective part and the second protective part are both rubber parts capable of anti-corrosion to isolate the sealing part from the electrolyte.
  • the sealing member includes a screw rod and a nut, the nut abuts on a side of the wall portion away from the inside of the housing, and the screw rod passes through the liquid injection hole. And is threadedly connected to the liquid injection hole, and one end of the screw rod is connected to the nut.
  • the seal includes a screw and a nut.
  • the screw rotates to assemble the seal and the liquid injection hole.
  • the seal can be removed from the liquid injection hole. separation to achieve circular injection.
  • a groove is provided on a side of the wall away from the interior of the housing, the liquid injection hole is provided on the bottom surface of the groove, and the nut is located in the groove.
  • a groove is provided on the outside of the wall, and the groove can accommodate the nut of the seal, reducing the risk of seal failure due to damage to foreign objects, and at the same time giving the battery a neat appearance.
  • this application also provides a battery, including the battery cell according to any one of the first aspects.
  • this application also provides an electrical device, including the battery described in the second aspect, where the battery is used to provide electrical energy.
  • Figure 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • Figure 2 is a schematic diagram of the exploded structure of a battery provided by some embodiments of the present application.
  • Figure 3 is a schematic diagram of a battery cell provided by some embodiments of the present application.
  • Figure 4 is a schematic diagram of a partial structure of a battery cell provided by some embodiments of the present application.
  • Figure 5 is a three-dimensional exploded view of the wall and seal provided by some embodiments of the present application.
  • Figure 6 is an enlarged view of point A in Figure 5;
  • Figure 7 is a schematic diagram of a liquid injection hole and a seal in some embodiments of the present application.
  • Figure 8 is a schematic diagram of the sealing member and the first protective member in some embodiments of the present application.
  • Figure 9 is a schematic diagram of the first protective component in some embodiments of the present application.
  • Figure 10 is an internal schematic diagram of the wall part, the sealing part and the first protective part in some embodiments of the present application.
  • Icon 10-casing; 100-wall; 101-liquid injection hole; 1010-channel; 102-groove; 11-seal; 110-first section; 111-second section; 112-screw; 113-screw Cap; 12-first protective member; 120-bottom wall; 121-side wall; 122-first convex portion; 13-second protective member; 130-body; 131-second convex portion; 1000-vehicle; 100a- Battery; 200-controller; 300-motor; 20-battery cell; 30-box; 31-first part; 32-second part.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • the term “plurality” refers to two or more (including two).
  • the orientation or positional relationship indicated by the technical terms “length”, “width”, “thickness”, “inner”, “outer”, “circumferential”, etc. are based on the orientation or positional relationship shown in the drawings, and only It is intended to facilitate the description of the embodiments of the present application and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.
  • the battery mentioned refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery cell includes a casing, an electrode assembly and an electrolyte.
  • the electrode assembly and the electrolyte are arranged inside the casing.
  • the electrode assembly consists of a positive electrode piece, a negative electrode piece and an isolation film. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the electrolyte is the carrier for ion transport.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the current collector without the positive electrode active material layer is used as a positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector without the negative electrode active material layer is used as a negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the material of the isolation film can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
  • the housing has a wall, which may be a top wall, a bottom wall, or a wall between the top wall and the bottom of the housing.
  • the wall is provided with a liquid injection hole, and the electrolyte is injected into the interior of the casing through the liquid injection hole.
  • the liquid injection hole is blocked by a sealing member so that the electrolyte is in a sealed environment and prevents leakage of the electrolyte. Due to material strength considerations, seals are generally metal seals.
  • the battery cell has a sealing member and a first protective member.
  • the first protective member covers at least the outer shell close to the sealing member.
  • One end on the inside to isolate the seal from the electrolyte inside the housing.
  • the sealing member and the electrolyte are isolated from each other, avoiding contact between the sealing member and the electrolyte, reducing the risk of leakage of the electrolyte due to corrosion of the sealing member, thereby allowing the battery to have a longer service life.
  • the battery cells disclosed in the embodiments of the present application can be used in, but are not limited to, vehicles, ships, aircraft, and other electrical equipment.
  • the power supply system of the electrical equipment can be composed of battery cells, batteries, etc. disclosed in this application.
  • Embodiments of the present application provide an electrical device that uses a battery as a power source.
  • the electrical device can be, but is not limited to, a mobile phone, a tablet computer, a laptop, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, Spacecraft and more.
  • electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc.
  • spacecraft can include airplanes, rockets, space shuttles, spaceships, etc.
  • an electrical device is a vehicle 1000 as an example.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • the battery 100a is disposed inside the vehicle 1000, and the battery 100a may be disposed at the bottom, head, or tail of the vehicle 1000.
  • the battery 100a can be used to power the vehicle 1000.
  • the battery 100a can be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000, such as for the starting, navigation and operating power requirements of the vehicle 1000.
  • the vehicle 1000 may also include a controller 200 and a motor 300.
  • the controller 200 is used to control the battery 100a to provide power to the motor 300, for example, to meet the power requirements for starting, navigation and driving of the vehicle 1000.
  • the battery 100a can not only be used as an operating power source of the vehicle 1000, but also can be used as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • FIG. 2 is a schematic diagram of an exploded structure of a battery 100a provided by some embodiments of the present application.
  • the battery 100a includes a case 30 and battery cells 20, and the battery cells 20 are accommodated in the case 30.
  • the box 30 is used to provide an accommodation space for the battery cells 20 , and the box 30 can adopt a variety of structures.
  • the box 30 may include a first part 31 and a second part 32 , the first part 31 and the second part 32 covering each other, the first part 31 and the second part 32 jointly defining a space for accommodating the battery cells 20 of accommodation space.
  • the second part 32 may be a hollow structure with one end open, and the first part 31 may be a plate-like structure.
  • the first part 31 covers the open side of the second part 32 so that the first part 31 and the second part 32 jointly define a receiving space.
  • the first part 31 and the second part 32 may also be hollow structures with one side open, and the open side of the first part 31 is covered with the open side of the second part 32.
  • the battery 100a there may be a plurality of battery cells 20, and the plurality of battery cells 20 may be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the plurality of battery cells 20 are connected in series and in parallel.
  • the plurality of battery cells 20 can be directly connected in series or in parallel or mixed together, and then the whole composed of the plurality of battery cells 20 can be accommodated in the box 30 ; of course, the battery 100 a can also be a plurality of battery cells 20 First, the battery modules are connected in series, parallel, or mixed to form a battery module, and then multiple battery modules are connected in series, parallel, or mixed to form a whole, and are accommodated in the box 30 .
  • the battery 100a may also include other structures.
  • the battery 100a may further include a bus component for realizing electrical connections between multiple battery cells 20 .
  • Each battery cell 20 may be a secondary battery, a primary battery, a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.
  • Figure 3 is a schematic diagram of a battery cell 20 provided by some embodiments of the present application.
  • Figure 4 is a schematic diagram of a partial structure of a battery cell 20 provided by some embodiments of the present application.
  • Figure 5 is a schematic diagram of a battery cell 20 provided by some embodiments of the present application. Some embodiments provide an exploded perspective view of wall 100 and seal 11 .
  • Figure 6 is an enlarged view of point A in Figure 5.
  • the battery cell 20 includes a casing 10 , a sealing member 11 and a first protective member 12 .
  • the housing 10 includes a wall 100 , and the wall 100 is provided with an injection hole 101 for injecting electrolyte into the housing 10 .
  • the sealing member 11 seals the liquid injection hole 101.
  • the first protective member 12 covers at least one end of the sealing member 11 close to the inside of the housing 10 to isolate the sealing member 11 from the electrolyte in the housing 10 .
  • the casing 10 may be used to encapsulate the electrode assembly and electrolyte of the battery cell 20 .
  • the housing 10 may include a housing and a cover.
  • the housing has an opening through which the electrode assembly is placed in the housing.
  • the cover closes the opening to form an internal environment with the housing that can accommodate the electrode assembly, electrolyte and other components.
  • the housing and cover may be separate components.
  • Housing 10 may come in a variety of shapes and sizes. Specifically, the shape of the housing 10 can be determined according to the specific shape and size of the electrode assembly.
  • the outer casing 10 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not particularly limited in the embodiments of the present application.
  • the embodiment of the present application is introduced by taking the housing 10 as a rectangular parallelepiped shape as an example.
  • the wall 100 may be a top wall, a bottom wall, or a wall between the top and bottom walls of the housing 10 .
  • the wall 100 may be the cover, or the wall 100 may be any wall of the housing.
  • the liquid injection hole 101 is a hole structure formed in the wall portion 100 , and the electrolyte can be injected into the interior of the housing 10 through the liquid injection hole 101 .
  • the sealing member 11 is a structure that blocks the liquid injection hole 101 .
  • the liquid injection hole 101 is blocked by the sealing member 11 so that the electrolyte is sealed inside the housing 10 .
  • the sealing member 11 may be a sealing nail.
  • the sealing member 11 may be a sealing screw or a sealing rivet.
  • the first protective member 12 is a component that covers at least one end of the sealing member 11 close to the inside of the housing 10 .
  • the first protective member 12 is made of a material with corrosion resistance.
  • the function of the first protective member 12 includes isolating the sealing member 11 and the electrolyte in the housing 10 from each other to prevent the sealing member 11 from contacting the electrolyte.
  • the first protective member 12 can cover an end surface of the sealing member 11 close to the inside of the housing 10 to achieve isolation between the sealing member 11 and the electrolyte.
  • the first protective member 12 may cover the end surface of the sealing member 11 close to the housing 10 and the portion above the end surface to achieve isolation between the sealing member 11 and the electrolyte.
  • the first protective member 12 may also cover the entire sealing member 11 to achieve isolation between the sealing member 11 and the electrolyte.
  • the sealing member 11 and the electrolyte in the housing 10 are isolated from each other by providing the first protective member 12 to prevent the sealing member 11 from being corroded due to contact between the sealing member 11 and the electrolyte, and the electrolyte leaking from the corroded place. This situation occurs so that the battery has a higher service life.
  • FIG. 7 is a schematic diagram of the liquid injection hole 101 and the seal 11 in some embodiments of the present application.
  • the sealing member 11 has an external thread
  • the liquid injection hole 101 has an internal thread
  • the sealing member 11 is threadedly connected to the liquid injection hole 101 .
  • the sealing member 11 and the liquid injection hole 101 are threadedly matched, so that the sealing member 11 and the housing 10 can be detached from each other, thereby realizing multiple liquid injections (cyclic liquid injection) of the battery cells 20 .
  • the seal 11 is screwed to the liquid injection hole 101, which can reduce the metal chips generated by opening the hole. Metal shavings falling into the casing may cause an internal short circuit in the battery cell 20 , thereby improving the safety of the battery.
  • the amount of electrolyte in the housing 10 can be selectively injected according to demand (the amount of electrolyte injected in a single time can be determined according to the usage requirements). After the electrolyte is consumed for a certain amount, The liquid is injected again after reaching a certain extent. This can solve the problem of the existing battery cell's liquid injection coefficient being too large (the amount of electrolyte injected is too large), resulting in reduced energy density, so that the battery cell has a higher energy density. At the same time, with the development of electrolyte technology, the cost of electrolyte is reduced.
  • the battery cell 20 can be injected cyclically, there is no need to fill the battery with one injection to meet the electrolyte consumption demand during the entire life cycle of the battery. Therefore, the cost is lower by injecting it later. Low electrolyte can effectively reduce the cost of use of the battery cell throughout its life cycle.
  • the electrolyte can be prevented from contacting the external thread of the seal 11 and the seal cannot be screwed out of the liquid injection hole 101 due to corrosion of the external thread.
  • the sealing member 11 is threadedly connected to the liquid injection hole 101, so that the sealing member 11 can be easily disassembled from the housing 10, so that the battery cell 20 can be conveniently circulated for liquid injection (multiple liquid injections); at the same time, due to The first protective member 12 can prevent the sealing member 11 from contacting the electrolyte, so the external thread is not corroded by the electrolyte, ensuring that the sealing member 11 can be disassembled from the housing 10 smoothly and safely.
  • FIG. 8 is a schematic diagram of the seal 11 and the first protective member 12 in some embodiments of the present application.
  • the seal 11 includes a first section 110 and a second section 111 connected to each other. , the first section 110 is closer to the inside of the housing 10 than the second section 111 , the diameter of the first section 110 is smaller than the diameter of the second section 111 , and the second section 111 is threadedly connected to the liquid injection hole 101 .
  • the first protective member 12 covers at least one end of the first section 110 away from the second section 111 .
  • the first section 110 and the second section 111 are coaxially arranged, and their cross-sections are circular.
  • the diameter of the first section 110 is smaller than the diameter of the second section 111 , so that the first section 110 can be inserted into the liquid injection hole 101 and the second section 111 can be threadedly connected to the liquid injection hole 101 . Since the diameter of the first section 110 is smaller, the first section 110 covering the first protective member 12 can also be inserted into the liquid injection hole 101 .
  • the end face can realize mutual isolation between the sealing member 11 and the electrolyte.
  • the first protective member 12 can also cover other parts of the first section 110 to achieve mutual isolation between the sealing member 11 and the electrolyte.
  • the second section 111 of the seal 11 is threadedly connected to the liquid injection hole 101 to ensure that the seal 11 tightly seals the liquid injection hole 101; the first section 110 is closer to the inside of the housing 10 than the second section 111 and has a smaller diameter than the second section 111.
  • the diameter of the second section 111 is to ensure that at least the first protective member 12 covering the end of the first section 110 can be placed inside the housing 10 along with the seal 11 to isolate the seal 11 from the electrolyte.
  • FIG. 9 is a schematic diagram of the first protection member 12 in some embodiments of the present application.
  • the first protection member 12 includes a bottom wall 120 and a side wall 121 .
  • the side wall 121 is surrounded by the bottom wall 120 .
  • the bottom wall 120 covers the end surface of the first section 110 .
  • the side wall 121 covers at least the outer peripheral surface of the first section 110 . part.
  • the first protective member 12 is in the shape of a cover and is disposed on the end of the first section 110 .
  • the bottom wall 120 of the first protective member 12 is used to cover the end surface of the first section 110 .
  • the side wall 121 is a portion of the first protective member 12 extending around the circumference of the first section 110 to cover the circumferential surface of the first section 110 .
  • the side wall 121 may cover the entire outer circumference of the first section 110 .
  • the bottom wall 120 of the first protective member 12 covers the end surface of the first section 110
  • the side wall 121 covers at least a part of the outer peripheral surface of the first section 110 to effectively separate the electrolyte in the housing 10 from the seal 11 Isolate from each other to prevent the seal 11 from being corroded by the electrolyte.
  • the side wall 121 is threadedly connected to the first section 110 .
  • the side wall 121 is surrounded by the bottom wall 120.
  • the side wall 121 and the bottom wall 120 form a cavity, and part of the first section 110 is located in the cavity.
  • Internal threads are formed on the inner surface of the side wall 121 , and the internal threads cooperate with the external threads on the peripheral surface of the first section 110 .
  • the side wall 121 is threadedly connected to the first section 110 so that the first protective member 12 can be easily assembled with the sealing member 11 and ensure the stability of the connection between the first protective member 12 and the sealing member 11 .
  • the first protective member 12 can also be disposed on the first section 110 by adhesion. In other embodiments, the first protection member 12 can also be disposed on the first section 110 by hot pressing.
  • FIG. 10 is an internal schematic diagram of the wall portion 100 , the sealing member 11 and the first protective member 12 in some embodiments of the present application.
  • the first protection member 12 further includes a first protrusion 122 , which is disposed on the outer peripheral surface of the side wall 121 .
  • the first protrusion 122 is used to abut the side of the wall 100 facing the inside of the housing 10 .
  • the first protrusion 122 is a structure protruding from the side wall 121 , and may be block-shaped or sheet-shaped, so as to be able to protrude from the side wall 121 and abut against the side of the wall 100 facing the inside of the housing 10 .
  • the side of the wall part 100 facing the inside of the housing 10 may refer to the inner surface of the wall part 100 .
  • the sealing member 11 and the first protective member can be blocked. 12 comes out of the liquid injection hole 101 along the axial direction of the liquid injection hole 101 .
  • gas will be generated due to electrochemical reactions.
  • the gas inside the battery cell 20 will increase, and the gas will exert a squeezing force on the seal 11.
  • the first protrusion 122 By setting the first protrusion 122 to resist the squeezing force of the gas.
  • the first protrusion 122 contacts the inner side of the wall 100 of the housing 10 and can withstand the extrusion force of the gas generated due to the electrochemical reaction inside the battery cell 20 , thereby reducing the risk of the sealing member 11 being extruded by the gas. Looseness may cause the seal 11 to fail.
  • the hole wall of the liquid injection hole 101 is provided with a channel 1010.
  • the channel 1010 extends along the axial direction of the liquid injection hole 101.
  • the channel 1010 is used for the first protrusion 122 to pass through the wall. Department 100.
  • the liquid injection hole 101 will be recessed outward along its radial direction to form a channel 1010, or a groove is made in the wall of the liquid injection hole 101, and the groove penetrates the wall portion 100 along the thickness direction of the wall portion 100.
  • the function of the channel 1010 is to allow the first protrusion 122 protruding from the side wall 121 to move, so that the first protrusion 122 enters the housing 10 from outside the housing 10 .
  • the position of the first protrusion 122 changes to be misaligned with the channel 1010 and then abut against the inner surface of the wall 100 .
  • the first protrusion 122 of the first protection member 12 can easily enter the housing 10 through the channel 1010, and then the first protrusion 122 is rotated by twisting the seal 11, thereby causing the first protrusion 122 to rotate.
  • the first convex portion 122 can be in contact with the inner side of the wall portion 100 .
  • the liquid injection hole 101 may not be provided with the channel 1010 .
  • the first protrusion 122 is deformed to become smaller in volume, so that the liquid injection hole 101 can be inserted into the housing 10 .
  • the number of first protrusions 122 is at least two, and the at least two first protrusions 122 are spaced apart in the circumferential direction of the side wall 121; the number of channels 1010 is different from the number of first protrusions 122. Equally, the channel 1010 corresponds to the first convex portion 122 one-to-one.
  • the number of the first protrusions 122 is two, and the two first protrusions 122 are symmetrically arranged along the axial direction of the seal 11 . In other embodiments, the number of the first protrusions 122 may also be three, four or five.
  • the number of channels 1010 corresponds to the number of first protrusions 122 , so that each first protrusion 122 enters the interior of the housing 10 through the corresponding channel 1010 .
  • the resistance of the seal 11 to the gas extrusion inside the battery can be improved, and the risk of the seal 11 loosening due to gas extrusion, resulting in sealing failure of the seal 11 can be effectively reduced.
  • the battery cell 20 also includes: a second protective member 13 located between the first protective member 12 and the second section 111.
  • the second protective member 13 includes a body 130 and a second protrusion 131.
  • the body 130 is sleeved on the first section. 110.
  • the second protrusion 131 is provided on the outer peripheral surface of the body 130, and the second protrusion 131 is embedded in the channel 1010 to block the channel 1010.
  • the second protective member 13 is a component located between the first protective member 12 and the second section 111 , and has a body 130 and a second protrusion 131 .
  • the main body 130 is annular, and is sleeved on the first section 110 and covers part of the peripheral surface of the first section 110 .
  • the part of the circumferential surface refers to the part of the main body 130 that is projected onto the circumferential surface of the first section 110 .
  • the body 130 can prevent the first section 110 from contacting the electrolyte.
  • the second protrusion 131 is a component protruding from the outer peripheral surface of the body 130.
  • the second protrusion 131 can be block-shaped or sheet-shaped to correspond to the shape of the channel 1010, and is used to block the channel 1010 and prevent the electrolyte from leaking from the channel 1010. out.
  • the protection of the first section 110 can be improved to prevent the electrolyte from contacting the seal 11; at the same time, by providing the second protrusion 131, the channel 1010 is blocked to prevent the electrolyte from contacting the sealing member 11. Leaked via channel 1010.
  • the first protective member 12 is fixed to the sealing member 11
  • the second protective member 13 is rotatable relative to the sealing member 11 around the central axis of the sealing member 11 .
  • the first protective member 12 is fixed to the sealing member 11 so as to rotate along with the rotation of the sealing member 11 , thereby enabling the first protrusion 122 and the channel 1010 to be misaligned with each other, thereby achieving abutment against the inner surface of the wall portion 100 .
  • “The first protective member 12 is fixed to the sealing member 11 ” may mean that when the sealing member 11 is screwed so that the sealing member 11 is threadedly matched with the liquid injection hole 101 , the first protective member 12 can be stationary relative to the sealing member 11 to follow. The seal 11 moves.
  • the second protective member 13 is rotatable relative to the seal 11 around the central axis of the seal 11 , so that the second protrusion 131 can be exposed from the channel 1010 by adjusting the positional relationship between the second protrusion 131 and the seal 11 Enter the channel 1010 to block the channel 1010.
  • the second protection member 13 can be threadedly connected to the first section 110 , that is, the inner circumferential surface of the body 130 is formed with internal threads, and the internal threads can cooperate with the external threads of the first section 110 .
  • the first protective member 12 is fixed to the sealing member 11 so as to enter the interior of the housing 10 when the sealing member 11 is assembled in the housing 10 to isolate the electrolyte and the sealing member 11 .
  • the second protection member 13 and the sealing member 11 can rotate relative to each other, so that the second protrusion 131 can smoothly enter the channel 1010 to block the channel 1010 by adjusting the position of the second protection member 13 in the circumferential direction of the sealing member 11 .
  • the sealing member 11 is a metal piece
  • the first protective member 12 and the second protective member 13 are both rubber pieces.
  • the sealing member 11 can be a metal piece made of aluminum, or a metal piece with an inner core made of stainless steel and a surface plated with aluminum.
  • the first protective member 12 and the second protective member 13 can be made of materials with corrosion resistance such as fluorine rubber.
  • the sealing member 11 is a metal piece to ensure that the sealing member 11 has sufficient strength and meets the sealing assembly requirements.
  • the first protective member 12 and the second protective member 13 are both rubber parts capable of preventing corrosion to isolate the sealing member 11 from the electrolyte.
  • the seal 11 includes a screw 112 and a nut 113 .
  • the nut 113 abuts on a side of the wall 100 away from the interior of the housing 10 .
  • the screw 112 is threaded through the injection hole.
  • the liquid hole 101 is threadedly connected to the liquid injection hole 101, and one end of the screw rod 112 is connected to the nut 113.
  • the area of the orthogonal projection of the screw 112 on the wall 100 is smaller than the area of the orthogonal projection of the nut 113 on the wall 100 . Since the nut 113 has a large area, the screw 112 can be easily rotated by twisting the nut 113 to achieve the blocking of the liquid injection hole 101 by the seal 11 .
  • the seal 11 includes a screw 112 and a nut 113.
  • the screw 112 rotates to realize the assembly of the seal 11 and the liquid injection hole 101; at the same time, by twisting the nut 113 in the reverse direction, the screw 112 can be rotated.
  • the seal 11 is detached from the liquid injection hole 101 to achieve circular liquid injection.
  • FIG. 6, FIG. 7 and FIG. 10 are combined.
  • a groove 102 is provided on the side of the wall 100 away from the inside of the housing 10.
  • the liquid injection hole 101 is provided on the bottom surface of the groove 102, and the nut 113 is located in the groove 102.
  • a groove 102 is provided on a side of the wall portion 100 away from the interior of the housing 10 .
  • the groove 102 is provided on the outer surface of the wall portion 100 .
  • the groove 102 is used to accommodate the nut 113 .
  • the depth of groove 102 may be equal to the thickness of nut 113 such that the surface on which the top surface of nut 113 lies is the outer surface of wall 100 . In some embodiments, the depth of groove 102 may be greater than the thickness of nut 113 such that the top surface of nut 113 lies below the outer surface of wall 100 .
  • a groove 102 is provided on the outside of the wall 100, and the groove 102 can accommodate the nut 113 of the seal 11, thereby reducing the risk of seal failure of the seal 11 due to damage by foreign objects, and at the same time making the battery neat. Exterior.
  • the present application also provides a battery, which includes the battery cell 20 described above.
  • the present application also provides an electric device, the electric device includes the battery described above, and the battery is used to provide electric energy.
  • the present application also provides a battery cell 20, see Figures 3-10.
  • the battery cell 20 includes a casing 10 , a sealing member 11 , a first protective member 12 and a second protective member 13 .
  • the casing 10 includes a casing and a cover.
  • the electrode assembly of the battery cell 20 has an opening of the casing placed inside the casing, and the opening of the casing is closed by the cover.
  • a liquid injection hole 101 is formed on the cover body, and the electrolyte is injected into the interior of the housing 10 through the liquid injection hole 101 .
  • a channel 1010 is formed on the hole wall of the liquid injection hole 101 .
  • the sealing member 11 is made of metal, and the first protective member 12 and the second protective member 13 are made of fluororubber.
  • the seal 11 is a sealing nail, which includes a nut 113 and a screw rod 112.
  • the screw rod 112 includes a first section 110 and a second section 111 that are connected to each other.
  • the second section 111 is connected to the nut 113.
  • the diameter of the first section 110 is smaller than the diameter of the second section 111 , and the second section 111 is threadedly connected to the liquid injection hole 101 .
  • the first protective member 12 is in the shape of a cover, and includes a bottom wall 120 and a side wall 121.
  • the bottom wall 120 covers the end surface of the first section 110, and the side wall 121 wraps around the outer periphery of the first section 110.
  • the side wall 121 and the first section 110 Threaded connection between.
  • a first protrusion 122 is formed on the side wall 121 of the first protection member 12.
  • the first protrusion 122 corresponds to the channel 1010.
  • the first protrusion 122 enters the interior of the housing 10 through the channel 1010 and is used to abut the inner surface of the cover.
  • the second protection member 13 includes a body 130 and a second protrusion 131 .
  • the body 130 is annular and is disposed between the first protective member 12 and the second section 111.
  • the inner circumferential surface of the body 130 is threadedly connected to the first section 110.
  • the second protrusion 131 is formed on the outer circumferential surface of the body 130. To block the channel 1010.
  • the first protection member 12 enters the inside of the housing 10 as the seal 11 is inserted.
  • the screw nut 112 is rotated by twisting the nut 113, and the first protrusion 122 follows the rotation to connect with the channel. 1010 misalignment, and can press against the inner surface of the cover. Twist the second protective member 13 and adjust the position of the second protective member 13 so that the second protrusion 131 can block the channel 1010 .
  • the seal 11 can be easily removed from the cover.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

本申请公开一种电池单体、电池和用电设备。电池单体，包括：外壳，包括壁部，壁部设置有用于向外壳内注入电解液的注液孔；密封件，密封注液孔；第一保护件，至少包覆于密封件的靠近外壳内部的一端，以将密封件与外壳内的电解液相互隔离。本申请提供的技术方案能够提高电池的使用寿命。

Description

电池单体、电池和用电设备
相关申请的交叉引用
本申请要求享有于2022年06月27日提交的名称为“电池单体、电池和用电设备”的中国专利申请202221611631.3的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，具体而言，涉及一种电池单体、电池和用电设备。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，如何提高电池的使用寿命，是电池技术一个亟需解决的技术问题。
发明内容
本申请提供了一种电池单体、电池和用电设备，本申请提供的技术方案能够提高电池的使用寿命。
本申请是通过下述技术方案实现的：
第一方面，本申请提供了一种电池单体，包括：外壳，包括壁部，所述壁部设置有用于向所述外壳内注入电解液的注液孔；密封件，密封所述注液孔；第一保护件，至少包覆于所述密封件的靠近所述外壳内部的一端，以将所述密封件与所述外壳内的所述电解液相互隔离。
在上述方案中，通过设置第一保护件将密封件和外壳内的电解液相互隔离，以防止因密封件与电解液接触导致密封件被腐蚀，电解液由腐蚀处泄露的情况发生，使得电池具有较高的使用寿命。
根据本申请的一些实施例，所述密封件具有外螺纹，所述注液孔具有内螺纹，所述密封件与所述注液孔螺纹连接。
上述方案中，密封件与注液孔螺纹连接，便于密封件拆装，进而使得该电池单体可以方便地循环注液；同时，由于第一保护件能够使得密封件不与电解液接触，故外螺纹不被电解液腐蚀，保证密封件可顺利安全地由外壳拆卸。
根据本申请的一些实施例，所述密封件包括相互连接的第一段和第二段，所述第一段相比所述第二段更靠近所述外壳的内部，所述第一段的直径小于所述第二段的直径，所述第二段与所述注液孔螺纹连接；所述第一保护件至少包覆于所述第一段的远离所述第二段的一端。
上述方案中，密封件的第二段与注液孔螺纹连接，保证密封件紧密地密封注液孔；第一段较第二段靠近外壳的内部且直径小于第二段的直径，以保证至少包覆于第一段的端部的第一保护件能够随密封件置于外壳内，以隔离密封件和电解液。
根据本申请的一些实施例，所述第一保护件包括底壁和侧壁，所述侧壁围设于所述底壁的周围，所述底壁覆盖所述第一段的端面，所述侧壁覆盖所述第一段的外周面的至少一部分。
上述方案中，第一保护件的底壁覆盖第一段的端面，侧壁覆盖第一段的外周面的至少一部分，以有效地将外壳内的电解液与密封件相互隔离，避免密封件被电解液腐蚀。
根据本申请的一些实施例，所述侧壁与所述第一段螺纹连接。
上述方案中，侧壁与第一段螺纹连接，使得第一保护件能够方便地与密封件装配，且保证第一保护件和密封件之间的连接稳定性。
根据本申请的一些实施例，所述第一保护件还包括第一凸部，所述第一凸部设置于所述侧壁的外周面，所述第一凸部用于抵接于所述壁部的面向所述外壳内部的一侧。
上述方案中，第一凸部抵接于外壳的壁部的内侧，能够抵挡因电池单体内部电化学反应产生的气体的挤压力，降低因气体挤压而使得密封件松动，导致密封件密封失效的风险。
根据本申请的一些实施例，所述注液孔的孔壁设置有通道，所述通道沿所述注液孔的轴向延伸，所述通道用于供所述第一凸部穿过所述壁部。
上述方案中，在装配密封件时，第一保护件的第一凸部能够方便地经过通道进入外壳内，随后通过拧动密封件使得第一凸部转动，进而使得第一凸部能够抵接于壁部的内侧。
根据本申请的一些实施例，所述第一凸部的数量为至少两个，至少两个所述第一凸部沿所述侧壁的周向间隔分布；所述通道的数量与所述第一凸部的数量相等，所述通道与所述第一凸部一一对应。
上述方案中，通过设置多个第一凸部，能够提高密封件对电池内部气体挤压的抵抗能力，有效降低因气体挤压而使得密封件松动，导致密封件密封失效的风险。
根据本申请的一些实施例，电池单体还包括：第二保护件，位于所述第一保护件和所述第二段之间，所述第二保护件包括本体和第二凸部，所述本体套设于所述第一段，所述第二凸部设置于所述本体的外周面，所述第二凸部嵌设于所述通道内，以封堵所述通道。
上述方案中，通过设置第二保护件，能够提高对第一段的保护，防止电解液与密封件接触；同时，通过设置第二凸部，以封堵通道，防止电解液通过通道泄露。
根据本申请的一些实施例，所述第一保护件固定于所述密封件，所述第二保护件绕所述密封件的中心轴线与所述密封件转动配合。
上述方案中，第一保护件固定于密封件，以随密封件装配于外壳时进入外壳内部，以隔离电解液和密封件。第二保护件与密封件可相对转动，通过转动第二保护件，能够调整第二凸部在密封件的周向的位置，使得第二凸部能够顺利地进入通道以封堵通道。
根据本申请的一些实施例，所述密封件为金属件，所述第一保护件和所述第二保护件均为橡胶件。
上述方案中，密封件为金属件，以保证密封件具有足够的强度，满足密封装配需求。第一保护件和第二保护件均为能够起防腐蚀作用的橡胶件，以隔离密封件和电解液。
根据本申请的一些实施例，所述密封件包括螺杆和螺帽，所述螺帽抵接于所述壁部的背离所述外壳内部的一侧，所述螺杆穿设于所述注液孔且与所述注液孔螺纹连接，所述螺杆的一端连接于所述螺帽。
上述方案中，密封件包括螺杆和螺帽，通过拧动螺帽使得螺杆转动，以实现密封件和注液孔的装配；同时通过反向拧动螺帽，能够使得密封件由注液孔拆离，实现循环注液。
根据本申请的一些实施例，所述壁部的背离所述外壳内部的一侧设置有凹槽，所述注液孔设置于所述凹槽的底面，所述螺帽位于所述凹槽内。
上述方案中，壁部的外侧设置有凹槽，该凹槽能够容纳密封件的螺帽，降低密封件因外物受损而密封失效的风险，同时使得电池具有整齐的外观。
第二方面，本申请还提供一种电池，包括第一方面任一项所述的电池单体。
第三方面，本申请还提供一种用电设备，包括第二方面所述的电池，所述电池用于提供电能。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池的分解结构示意图；
图3为本申请一些实施例提供的电池单体的示意图；
图4为本申请一些实施例提供的电池单体的部分结构的示意图；
图5为本申请一些实施例提供的壁部和密封件立体爆炸图；
图6为图5中A处的放大图；
图7为本申请一些实施例中注液孔和密封件的示意图；
图8为本申请一些实施例中密封件和第一保护件的示意图；
图9为本申请一些实施例中第一保护件的示意图；
图10为本申请一些实施例中壁部、密封件以及第一保护件的内部示意图。
图标：10-外壳；100-壁部；101-注液孔；1010-通道；102-凹槽；11-密封件；110-第一段；111-第二段；112-螺杆；113-螺帽；12-第一保护件；120-底壁；121-侧壁；122-第一凸部；13-第二保护件；130-本体；131-第二凸部；1000-车辆；100a-电池；200-控制器；300-马达；20-电池单体；30-箱体；31-第一部分；32-第二部分。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：存在A，同时存在A和B，存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)。
在本申请实施例的描述中，技术术语“长度”“宽度”“厚度”“内”“外”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连 接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，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，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
在本申请中，所提及的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。
电池单体包括外壳、电极组件和电解液，电极组件和电解液设置于外壳的内部。电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。电解液是离子传输的载体。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。外壳具有壁部，该壁部可以为外壳的顶壁、底壁或者位于顶壁和底部之间的壁。壁部设置有注液孔，电解液通过注液孔注入于外壳内部。注液孔通过密封件封堵，以使得电解液处于密封环境中，防止电解液泄露。出于材料强度的考虑，密封件一般为金属密封件。
在电池技术的发展中，如何提高电池的使用寿命是亟待解决的技术问题，发明人发现，目前电池单体存在电解液泄露的问题，而电解液泄露会影响电池单体充放电性能，导致电池使用寿命较短，经发明人深入研究发现，电解液泄露的原因在于，封堵注液孔的密封件因与电池单体内部的电解液接触而被腐蚀，导致电解液由腐蚀处泄露。
鉴于此，为提高电池的使用寿命，发明人经过深入研究，设计了一种电池单体，该电池单体具有密封件和第一保护件，第一保护件至少包覆于密封件的靠近外壳内部的一端，以将密封件与外壳内的电解液相互隔离。
通过设置第一保护件，将密封件和电解液相互隔离，避免密封件与电解液接触，降低因密封件被腐蚀而造成电解液泄露的风险，进而使得电池具有较高的使用寿命。
本申请实施例公开的电池单体可以但不限用于车辆、船舶或飞行器等用电设备中。可以使用具备本申请公开的电池单体、电池等组成该用电设备的电源系统。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于手机、平板电脑、笔记本电脑、电动玩具、电动工具、电动自行车、电动摩托车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电设备为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100a，电池100a可以设置在车辆1000的底部或头部或尾部。电池100a可以用于车辆1000的供电，例如，电池100a可以作为车辆1000的操作电源，用于车辆1000的电路系统，例如用于车辆1000的启动、导航和运行时的工作用电需求。车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100a为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。在本申请一些实施例中，电池100a不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一些实施例提供的电池100a的分解结构示意图。电池100a包括箱体30和电池单体20，电池单体20容纳于箱体30内。其中，箱体30用于为电池单体20提供容纳空间，箱体30可以采用多种结构。在一些实施例中，箱体30可以包括第一部分31和第二部分32，第一部分31与第二部分32相互盖合，第一部分31和第二部分32共同限定出用于容纳电池单 体20的容纳空间。第二部分32可以为一端开口的空心结构，第一部分31可以为板状结构，第一部分31盖合于第二部分32的开口侧，以使第一部分31与第二部分32共同限定出容纳空间；第一部分31和第二部分32也可以是均为一侧开口的空心结构，第一部分31的开口侧盖合于第二部分32的开口侧。
在电池100a中，电池单体20可以是多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。多个电池单体20之间可直接串联或并联或混联在一起，再将多个电池单体20构成的整体容纳于箱体30内；当然，电池100a也可以是多个电池单体20先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体30内。电池100a还可以包括其他结构，例如，该电池100a还可以包括汇流部件，用于实现多个电池单体20之间的电连接。
其中，每个电池单体20可以为二次电池、一次电池、锂硫电池、钠离子电池或镁离子电池，但不局限于此。
请参照图3-图6，图3为本申请一些实施例提供的电池单体20的示意图，图4为本申请一些实施例提供的电池单体20的部分结构的示意图，图5为本申请一些实施例提供的壁部100和密封件11立体爆炸图。图6为图5中A处的放大图。
电池单体20包括外壳10、密封件11以及第一保护件12。外壳10包括壁部100，壁部100设置有用于向外壳10内注入电解液的注液孔101。密封件11密封注液孔101。第一保护件12至少包覆于密封件11的靠近外壳10内部的一端，以将密封件11与外壳10内的电解液相互隔离。
外壳10可以用于封装电池单体20的电极组件和电解液。外壳10可以包括壳体和盖体，壳体具有开口，电极组件通过开口置入于壳体内，盖体封闭开口以与壳体形成可以容纳电极组件、电解液等其他部件的内部环境。壳体和盖体可以是独立的部件。外壳10可以是多种形状和多种尺寸的。具体地，外壳10的形状可以根据电极组件的具体形状和尺寸大小来确定。外壳10的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。本申请实施例以外壳10为长方体形为例介绍。
壁部100可以为外壳10的顶壁、底壁或者顶壁和底壁之间的壁。当外壳10包括壳体和盖体时，壁部100可以盖体，或者壁部100可以为壳体的任一壁。
注液孔101为形成于壁部100的孔结构，电解液可以由注液孔101注入于外壳10的内部。
密封件11为封堵注液孔101的结构，通过密封件11封堵注液孔101，以使得电解液密封于外壳10内部。在一些实施例中，密封件11可以为密封钉，例如密封件11可以为密封螺钉或密封铆钉等。
第一保护件12，为至少包覆于密封件11的靠近外壳10内部的一端的部件。第一保护件12采用具有耐腐蚀特性的材料制成，第一保护件12的作用包括将密封件11和外壳10内的电解液相互隔离，以防止密封件11接触电解液。在一些实施例中，第一保护件12可以包覆于密封件11靠近外壳10内的一端面，实现密封件11和电解液的隔离。在另一些实施例中，第一保护件12可以包覆于密封件11靠近外壳10的一端的端面以及该端面以上的部位，以实现密封件11和电解液的隔离。在其他一些实施例中，第一保护件12还可以将整个密封件11包覆，以实现密封件11和电解液的隔离。
在上述方案中，通过设置第一保护件12将密封件11和外壳10内的电解液相互隔离，以防止因密封件11与电解液接触导致密封件11被腐蚀，电解液由腐蚀处泄露的情况发生，使得电池具有较高的使用寿命。
根据本申请的一些实施例，结合图6和图7，图7为本申请一些实施例中注液孔101和密封件11的示意图。密封件11具有外螺纹，注液孔101具有内螺纹，密封件11与注液孔101螺纹连接。
密封件11和注液孔101螺纹配合，能够实现密封件11和外壳10之间相互拆离，进而实现电池单体20的多次注液(循环注液)。较现有技术中密封件11焊接于注液孔101，通过在外壳10 上重新开孔注液的方案而言，密封件11螺接于注液孔101，能够降低因开孔产生金属屑，金属屑坠入壳体内部致使电池单体20内部短路的风险，提高电池的安全性。
在一些实施例中，由于可以循环注液，故能够根据需求，选择性地注液外壳10的电解液的量(单次电解液的注入量，可根据使用需求确定)，待电解液消耗一定程度后再次注液，为此能够解决现有电池单体注液系数过大(电解液注入量过大)，导致能量密度降低的问题，使得电池单体具有较高的能量密度。同时，随着电解液技术的发展，电解液成本的降低，由于该电池单体20能够循环注液，不需要通过一次注液满足电池全寿命周期电解液消耗需求，故通过在后期注入成本较低的电解液，能够有效降低电池单体20全生命周期的使用成本。
由于设置有第一保护件12，故能够防止电解液接触密封件11的外螺纹，避免因外螺纹被腐蚀而导致的密封件无法拧出于注液孔101的情况发生。
上述方案中，密封件11与注液孔101螺纹连接，使得密封件11能够方便地由外壳10拆卸，进而使得该电池单体20可以方便地循环注液(多次注液)；同时，由于第一保护件12能够使得密封件11不与电解液接触，故外螺纹不被电解液腐蚀，保证密封件11可顺利安全地由外壳10拆卸。
根据本申请的一些实施例，请结合图8，图8为本申请一些实施例中密封件11和第一保护件12的示意图，密封件11包括相互连接的第一段110和第二段111，第一段110相比第二段111更靠近外壳10的内部，第一段110的直径小于第二段111的直径，第二段111与注液孔101螺纹连接。第一保护件12至少包覆于第一段110的远离第二段111的一端。
第一段110和第二段111同轴设置，且二者的横截面分别呈圆形。第一段110的直径小于第二段111的直径，以实现第一段110能够穿设于注液孔101，第二段111能够与注液孔101螺纹连接。由于第一段110的直径较小，故包覆了第一保护件12的第一段110也能够穿设于注液孔101。
“第一保护件12至少包覆于第一段110的远离第二段111的一端”，指在一些实施例中，第一保护件12仅包覆第一段110的远离第二段111的端面就能够实现密封件11与电解液的相互隔离。同时，在另一些实施例中，第一保护件12还可以包覆第一段110的其他部位，以实现密封件11与电解液的相互隔离。
上述方案中，密封件11的第二段111与注液孔101螺纹连接，保证密封件11紧密地密封注液孔101；第一段110较第二段111靠近外壳10的内部且直径小于第二段111的直径，以保证至少包覆于第一段110的端部的第一保护件12能够随密封件11置于外壳10内，以隔离密封件11和电解液。
根据本申请的一些实施例，结合图9，图9为本申请一些实施例中第一保护件12的示意图。第一保护件12包括底壁120和侧壁121，侧壁121围设于底壁120的周围，底壁120覆盖第一段110的端面，侧壁121覆盖第一段110的外周面的至少一部分。
第一保护件12呈罩状，罩设于第一段110的端部。第一保护件12的底壁120用于覆盖第一段110的端面。侧壁121为第一保护件12的绕第一段110的周向延伸以包覆于第一段110的周面的部位。
“侧壁121覆盖第一段110的外周面的至少一部分”，指侧壁121至少覆盖第一段110的部分外周面，该部分外周面指沿第一段110的轴向上的外周面，以保证电解液不与密封件11接触。在一些实施例中，侧壁121可以将第一段110的整个外周面覆盖。
上述方案中，第一保护件12的底壁120覆盖第一段110的端面，侧壁121覆盖第一段110的外周面的至少一部分，以有效地将外壳10内的电解液与密封件11相互隔离，避免密封件11被电解液腐蚀。
根据本申请的一些实施例，请参见图8和图9，侧壁121与第一段110螺纹连接。
侧壁121围设于底壁120，侧壁121与底壁120形成腔室，第一段110的部分位于该腔室 中。侧壁121的内表面形成有内螺纹，该内螺纹与第一段110周面的外螺纹配合。通过拧动第一保护件12，能够快速地将第一保护件12装配于第一段110。
上述方案中，侧壁121与第一段110螺纹连接，使得第一保护件12能够方便地与密封件11装配，且保证第一保护件12和密封件11之间的连接稳定性。
在其他实施例中，第一保护件12还可以通过粘接的方式设置于第一段110。在其他实施例中，第一保护件12还可以通过热压的方式设置于第一段110。
根据本申请的一些实施例，请结合图10，图10为本申请一些实施例中壁部100、密封件11以及第一保护件12的内部示意图。第一保护件12还包括第一凸部122，第一凸部122设置于侧壁121的外周面，第一凸部122用于抵接于壁部100的面向外壳10内部的一侧。
第一凸部122为凸出于侧壁121的结构，其可以为块状或片状等，以能够凸出于侧壁121并抵接于壁部100的面向外壳10内部的一侧。
“壁部100的面向外壳10内部的一侧”，可以指壁部100的内表面，当第一凸部122抵接于壁部100的内表面时，能够阻止密封件11和第一保护件12沿注液孔101的轴向脱出于注液孔101。
电池单体20在使用过程中，因电化学反应会产生气体，随着使用时间的增加，电池单体20内部的气体会增多，气体会对密封件11施加挤压力，通过设置第一凸部122，以抵抗该气体的挤压力。
上述方案中，第一凸部122抵接于外壳10的壁部100的内侧，能够抵挡因电池单体20内部电化学反应产生的气体的挤压力，降低因气体挤压而使得密封件11松动，导致密封件11密封失效的风险。
根据本申请的一些实施例，请参见图7，注液孔101的孔壁设置有通道1010，通道1010沿注液孔101的轴向延伸，通道1010用于供第一凸部122穿过壁部100。
注液孔101会沿其径向向外侧凹陷以形成通道1010，或者说在注液孔101的孔壁开槽，且该槽由沿壁部100的厚度方向贯穿壁部100。
通道1010的作用在于容许凸出于侧壁121的第一凸部122的移动，以使得第一凸部122由外壳10之外进入外壳10之内。
在装配密封件11时，可首先将第一凸部122对准通道1010，以将第一段110置入于外壳10，在拧动第二段111使得密封件11与注液孔101螺纹连接。在密封件11拧动的过程中，第一凸部122位置发生改变，以与通道1010错位，进而抵接于壁部100的内表面。
上述方案中，在装配密封件11时，第一保护件12的第一凸部122能够方便地经过通道1010进入外壳10内，随后通过拧动密封件11使得第一凸部122转动，进而使得第一凸部122能够抵接于壁部100的内侧。
在其他实施例中，注液孔101可不设置通道1010，通过挤压第一凸部122，使得第一凸部122形变以体积变小，以由注液孔101置入于外壳10内。
根据本申请的一些实施例，第一凸部122的数量为至少两个，至少两个第一凸部122沿侧壁121的周向间隔分布；通道1010的数量与第一凸部122的数量相等，通道1010与第一凸部122一一对应。
在一些实施例中，第一凸部122的数量为两个，两个第一凸部122沿密封件11的轴向对称布设。在其他实施例中，第一凸部122的数量还可以为三个、四个或五个等。
通道1010的数量与第一凸部122的数量对应，以使得每一个第一凸部122由对应的通道1010进入外壳10的内部。
上述方案中，通过设置多个第一凸部122，能够提高密封件11对电池内部气体挤压的抵抗能力，有效降低因气体挤压而使得密封件11松动，导致密封件11密封失效的风险。
根据本申请的一些实施例，请参见图6-图8。电池单体20还包括：第二保护件13，位于第一保护件12和第二段111之间，第二保护件13包括本体130和第二凸部131，本体130套设于第一段110，第二凸部131设置于本体130的外周面，第二凸部131嵌设于通道1010内，以封堵通道1010。
第二保护件13为处于第一保护件12和第二段111之间的部件，其具有本体130和第二凸部131。本体130呈环状，其套设于第一段110并覆盖第一段110的部分周面。该部分周面所指的部位为本体130正投影于第一段110周面的部位。本体130能够防止第一段110与电解液接触。
第二凸部131为凸出于本体130外周面的部件，第二凸部131可以为块状或者片状，以对应通道1010的形状，用于封堵通道1010，防止电解液由通道1010泄出。
上述方案中，通过设置第二保护件13，能够提高对第一段110的保护，防止电解液与密封件11接触；同时，通过设置第二凸部131，以封堵通道1010，防止电解液通过通道1010泄露。
根据本申请的一些实施例，第一保护件12固定于密封件11，第二保护件13绕密封件11的中心轴线与密封件11可相对转动。
第一保护件12固定于密封件11，从而可以随密封件11的转动而转动，进而能够实现第一凸部122与通道1010相互错位，实现对壁部100内表面的抵顶。“第一保护件12固定于密封件11”，可以指，在拧动密封件11使得密封件11与注液孔101螺纹配合时，第一保护件12能够相对于密封件11静止，以随密封件11运动。
第二保护件13绕密封件11的中心轴线可相对于密封件11转动，以便于通过调节第二凸部131与密封件11的位置关系，使得第二凸部131能够由通道1010之外置入于通道1010，以封堵通道1010。
在一些实施例中，参见图8，第二保护件13可以与第一段110螺纹连接，即本体130的内周面形成有内螺纹，该内螺纹能够与第一段110的外螺纹配合。
上述方案中，第一保护件12固定于密封件11，以随密封件11装配于外壳10时进入外壳10内部，以隔离电解液和密封件11。第二保护件13与密封件11可相对转动，以通过调整第二保护件13在密封件11周向的位置，使得第二凸部131能够顺利地进入通道1010以封堵通道1010。
根据本申请的一些实施例，密封件11为金属件，第一保护件12和第二保护件13均为橡胶件。
在一些实施例中，密封件11可以为由铝材质制得的金属件，也可以为内芯为不锈钢表面镀铝的金属件。
第一保护件12和第二保护件13可以通过氟橡胶等具有耐腐蚀特性的材料制得。
上述方案中，密封件11为金属件，以保证密封件11具有足够的强度，满足密封装配需求。第一保护件12和第二保护件13均为能够起防腐蚀作用的橡胶件，以隔离密封件11和电解液。
根据本申请的一些实施例，结合图7和图8，密封件11包括螺杆112和螺帽113，螺帽113抵接于壁部100的背离外壳10内部的一侧，螺杆112穿设于注液孔101且与注液孔101螺纹连接，螺杆112的一端连接于螺帽113。
螺杆112在壁部100的正投影的面积小于螺帽113在壁部100的正投影的面积。由于螺帽113具有较大的面积，故通过拧动螺帽113能够轻易地使得螺杆112旋转，实现密封件11对注液孔101的封堵。
上述方案中，密封件11包括螺杆112和螺帽113，通过拧动螺帽113使得螺杆112转动，以实现密封件11和注液孔101的装配；同时通过反向拧动螺帽113，能够使得密封件11由注液孔101拆离，实现循环注液。
根据本申请的一些实施例，结合图6、图7以及图10。壁部100的背离外壳10内部的一侧 设置有凹槽102，注液孔101设置于凹槽102的底面，螺帽113位于凹槽102内。
壁部100的背离外壳10内部的一侧设置有凹槽102，指壁部100的外表面设置有凹槽102，该凹槽102用于容纳螺帽113。
在一些实施例中，凹槽102的深度可以等于螺帽113的厚度，以使得螺帽113的顶面所处的表面为壁部100的外表面。在一些实施例中，凹槽102的深度可以大于螺帽113的厚度，以使得螺帽113的顶面所处的表面位于壁部100的外表面的下方。
上述方案中，壁部100的外侧设置有凹槽102，该凹槽102能够容纳密封件11的螺帽113，降低密封件11因外物受损而密封失效的风险，同时使得电池具有整齐的外观。
根据本申请的一些实施例，本申请还提供一种电池，该电池包括上述描述的电池单体20。
根据本申请的一些实施例，本申请还提供一种用电设备，该用电设备包括上文描述的电池，该电池用于提供电能。
根据本申请的一些实施例，本申请还提供一种电池单体20，请参见图3-图10。电池单体20包括外壳10、密封件11、第一保护件12以及第二保护件13。外壳10包括壳体和盖体，电池单体20的电极组件有壳体的开口置入于壳体内部，壳体的开口通过盖体封闭。盖体形成有注液孔101，电解液通过注液孔101注入于外壳10内部。注液孔101的孔壁形成有通道1010。密封件11由金属制得，第一保护件12和第二保护件13由氟橡胶制得。
密封件11为密封钉，其包括螺帽113和螺杆112，沿密封件11的轴向，螺杆112包括相互连接的第一段110和第二段111，第二段111与螺帽113连接，第一段110的直径小于第二段111的直径，第二段111与注液孔101螺纹连接。
第一保护件12呈罩状，其包括底壁120和侧壁121，底壁120覆盖第一段110的端面，侧壁121包裹于第一段110的外周，侧壁121与第一段110之间螺纹连接。第一保护件12的侧壁121形成有第一凸部122，第一凸部122与通道1010对应，第一凸部122经通道1010进入外壳10内部，用于抵接盖体的内表面。第二保护件13包括本体130和第二凸部131。本体130呈环状，其设置于第一保护件12和第二段111之间，本体130的内周面与第一段110螺纹连接，第二凸部131形成于本体130的外周面，用于封堵通道1010。
在密封件11装配于盖体时，第一保护件12随密封件11的置入而进入外壳10内部，通过拧动螺帽113使得螺杆112发生转动，第一凸部122跟随转动以与通道1010错位，进而能够抵顶于盖体的内表面。拧动第二保护件13，调节第二保护件13的位置，以使得第二凸部131能够封堵通道1010。同理，将第一凸部122对齐于通道1010，取消第一凸部122与盖体的抵顶关系，能够方便地将密封件11由盖体取下。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种电池单体，其特征在于，包括：
    外壳，包括壁部，所述壁部设置有用于向所述外壳内注入电解液的注液孔；
    密封件，密封所述注液孔；
    第一保护件，至少包覆于所述密封件的靠近所述外壳内部的一端，以将所述密封件与所述外壳内的所述电解液相互隔离。
  2. 根据权利要求1所述的电池单体，其特征在于，
    所述密封件具有外螺纹，所述注液孔具有内螺纹，所述密封件与所述注液孔螺纹连接。
  3. 根据权利要求2所述的电池单体，其特征在于，
    所述密封件包括相互连接的第一段和第二段，所述第一段相比所述第二段更靠近所述外壳的内部，所述第一段的直径小于所述第二段的直径，所述第二段与所述注液孔螺纹连接；
    所述第一保护件至少包覆于所述第一段的远离所述第二段的一端。
  4. 根据权利要求3所述的电池单体，其特征在于，
    所述第一保护件包括底壁和侧壁，所述侧壁围设于所述底壁的周围，所述底壁覆盖所述第一段的端面，所述侧壁覆盖所述第一段的外周面的至少一部分。
  5. 根据权利要求4所述的电池单体，其特征在于，
    所述侧壁与所述第一段螺纹连接。
  6. 根据权利要求4或5所述的电池单体，其特征在于，
    所述第一保护件还包括第一凸部，所述第一凸部设置于所述侧壁的外周面，所述第一凸部用于抵接于所述壁部的面向所述外壳内部的一侧。
  7. 根据权利要求6所述的电池单体，其特征在于，
    所述注液孔的孔壁设置有通道，所述通道沿所述注液孔的轴向延伸，所述通道用于供所述第一凸部穿过所述壁部。
  8. 根据权利要求7所述的电池单体，其特征在于，
    所述第一凸部的数量为至少两个，至少两个所述第一凸部沿所述侧壁的周向间隔分布；
    所述通道的数量与所述第一凸部的数量相等，所述通道与所述第一凸部一一对应。
  9. 根据权利要求7或8所述的电池单体，其特征在于，所述电池单体还包括：
    第二保护件，位于所述第一保护件和所述第二段之间，所述第二保护件包括本体和第二凸部，所述本体套设于所述第一段，所述第二凸部设置于所述本体的外周面，所述第二凸部嵌设于所述通道内，以封堵所述通道。
  10. 根据权利要求9所述的电池单体，其特征在于，
    所述第一保护件固定于所述密封件，所述第二保护件绕所述密封件的中心轴线与所述密封件转动配合。
  11. 根据权利要求9或10所述的电池单体，其特征在于，
    所述密封件为金属件，所述第一保护件和所述第二保护件均为橡胶件。
  12. 根据权利要求2-11任一项所述的电池单体，其特征在于，
    所述密封件包括螺杆和螺帽，所述螺帽抵接于所述壁部的背离所述外壳内部的一侧，所述螺杆穿设于所述注液孔且与所述注液孔螺纹连接，所述螺杆的一端连接于所述螺帽。
  13. 根据权利要求12所述的电池单体，其特征在于，
    所述壁部的背离所述外壳内部的一侧设置有凹槽，所述注液孔设置于所述凹槽的底面，所述螺帽位于所述凹槽内。
  14. 一种电池，其特征在于，包括权利要求1-13任一项所述的电池单体。
  15. 一种用电设备，其特征在于，包括权利要求14所述的电池，所述电池用于提供电能。
PCT/CN2022/116277 2022-06-27 2022-08-31 电池单体、电池和用电设备 WO2024000795A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202221611631.3U CN217507573U (zh) 2022-06-27 2022-06-27 电池单体、电池和用电设备
CN202221611631.3 2022-06-27

Publications (1)

Publication Number Publication Date
WO2024000795A1 true WO2024000795A1 (zh) 2024-01-04

Family

ID=83339929

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/116277 WO2024000795A1 (zh) 2022-06-27 2022-08-31 电池单体、电池和用电设备

Country Status (2)

Country Link
CN (1) CN217507573U (zh)
WO (1) WO2024000795A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009048968A (ja) * 2007-08-23 2009-03-05 Toyota Motor Corp 密閉型電池
CN107403886A (zh) * 2016-05-19 2017-11-28 宁德时代新能源科技股份有限公司 电池顶盖
CN206849939U (zh) * 2017-05-13 2018-01-05 合肥国轩高科动力能源有限公司 一种方形电池注液孔密封组件
CN112635934A (zh) * 2021-03-10 2021-04-09 江苏时代新能源科技有限公司 用于密封通孔的密封组件、制备电池单体的方法和装置
CN214477678U (zh) * 2021-04-29 2021-10-22 宁德时代新能源科技股份有限公司 盖板、电池单体、电池及用电设备
CN215896640U (zh) * 2021-04-20 2022-02-22 湖北亿纬动力有限公司 非焊接式盖板注液结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009048968A (ja) * 2007-08-23 2009-03-05 Toyota Motor Corp 密閉型電池
CN107403886A (zh) * 2016-05-19 2017-11-28 宁德时代新能源科技股份有限公司 电池顶盖
CN206849939U (zh) * 2017-05-13 2018-01-05 合肥国轩高科动力能源有限公司 一种方形电池注液孔密封组件
CN112635934A (zh) * 2021-03-10 2021-04-09 江苏时代新能源科技有限公司 用于密封通孔的密封组件、制备电池单体的方法和装置
CN215896640U (zh) * 2021-04-20 2022-02-22 湖北亿纬动力有限公司 非焊接式盖板注液结构
CN214477678U (zh) * 2021-04-29 2021-10-22 宁德时代新能源科技股份有限公司 盖板、电池单体、电池及用电设备

Also Published As

Publication number Publication date
CN217507573U (zh) 2022-09-27

Similar Documents

Publication Publication Date Title
CN214254576U (zh) 端盖组件、电池单体、电池及用电装置
WO2022188323A1 (zh) 用于密封通孔的密封组件、制备电池单体的方法和装置
CN215988964U (zh) 电池单体、电池及用电设备
US11757161B2 (en) Battery cell, battery and electricity consuming device
CN214477678U (zh) 盖板、电池单体、电池及用电设备
WO2023221598A1 (zh) 连接组件、电池单体、电池及用电设备
WO2023231209A1 (zh) 密封组件、电池单体、电池及用电装置
WO2023142953A1 (zh) 电池顶盖组件、电池单体、电池及用电装置
CN217306722U (zh) 端盖组件、电池单体、电池及用电装置
US20230395931A1 (en) End cover assembly, battery cell, battery, and electric apparatus
US20240145889A1 (en) Insulation patch, battery cell, battery, and device
WO2024008054A1 (zh) 电池单体、电池及用电装置
WO2024032195A1 (zh) 电池单体、电池和用电装置
WO2024000795A1 (zh) 电池单体、电池和用电设备
WO2023216829A1 (zh) 电池单体、电池及用电装置
WO2023160034A1 (zh) 电池箱体上盖、电池箱体、电池及用电设备
US20230155262A1 (en) Housing, battery cell, battery and electric apparatus
WO2023168954A1 (zh) 电芯、电芯的制造方法、电池单体、电池及用电设备
WO2022267602A1 (zh) 电池及用电装置
CN216850124U (zh) 螺钉、连接结构、电池和用电装置
WO2023070532A1 (zh) 电池单体、电池、用电装置、制备电池单体的方法和装置
WO2023004827A1 (zh) 外壳、电池单体、电池、用电设备及电池单体的制造方法
WO2024036554A1 (zh) 端盖组件、电池单体、电池以及用电装置
WO2023220880A1 (zh) 端盖组件、电池单体、电池及用电装置
WO2023155034A1 (zh) 端盖组件、电池单体、电池以及使用电池的装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22948885

Country of ref document: EP

Kind code of ref document: A1