WO2024198637A1 - 端盖组件、储能装置和用电设备 - Google Patents

端盖组件、储能装置和用电设备 Download PDF

Info

Publication number
WO2024198637A1
WO2024198637A1 PCT/CN2024/071983 CN2024071983W WO2024198637A1 WO 2024198637 A1 WO2024198637 A1 WO 2024198637A1 CN 2024071983 W CN2024071983 W CN 2024071983W WO 2024198637 A1 WO2024198637 A1 WO 2024198637A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall surface
wall
injection
angle
energy storage
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2024/071983
Other languages
English (en)
French (fr)
Inventor
熊永锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hithium Energy Storage Technology Co Ltd
Original Assignee
Xiamen Hithium Energy Storage Technology Co Ltd
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 Xiamen Hithium Energy Storage Technology Co Ltd filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Publication of WO2024198637A1 publication Critical patent/WO2024198637A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to an end cover assembly, an energy storage device and an electrical equipment.
  • a secondary battery also known as a rechargeable battery or storage battery, refers to a battery that can be used continuously by recharging the active material after the battery is discharged.
  • the recyclable nature of secondary batteries has made them gradually become the main power source for electrical equipment.
  • people have higher and higher requirements for their performance in all aspects, especially for battery cycle performance.
  • the amount of liquid injected into the battery is an important parameter to ensure the battery cycle performance. Too little liquid injection will cause the cycle to decay too quickly, causing the battery life to decay too quickly. However, too much liquid injection will cause the battery to swell and damage the overall structure of the battery.
  • vacuum back-injection injection method has high requirements on the sealing of the equipment pipeline and may cause the shell to shrink and deform; while the forward injection method also has the technical problem of difficulty in controlling the injection accuracy and easy to cause the shell to bulge and deform.
  • the purpose of the present application is to provide an end cover assembly, an energy storage device and an electrical equipment that can improve safety performance.
  • the present application provides an end cover assembly for an energy storage device, comprising a top cover, the top cover comprising an outer surface and an inner surface opposite to each other, the top cover being provided with an injection hole, the injection hole penetrating the outer surface and the inner surface; the injection hole comprising a first wall surface and a second wall surface connected in a circumferential direction, the first wall surface and the second wall surface having an angle, or the first wall surface and the second wall surface having an angle of 180° and different surface shapes, wherein the angle between the first wall surface and the second wall surface refers to the angle in the tangent direction of the connecting point in the cross section.
  • the present application provides an injection hole on the top cover, so that during the manufacturing process of the energy storage device, an injection needle can be used to inject electrolyte into the interior of the energy storage device through the injection hole; and the injection hole is also designed to have a first wall surface and a second wall surface connected in the circumferential direction, and the first wall surface and the second wall surface have an angle, so that the cross-sectional shape of the injection hole is non-circular; thereby, when the injection hole and the injection needle cooperate, the injection hole has at least a part of the space not occupied by the injection needle, and during the injection process, the gas generated in the energy storage device can be discharged through the above-mentioned unoccupied space, avoiding the situation where the outer shell bulges and deforms due to excessive internal air pressure of the energy storage device during the injection process, and the secondary battery injection does not need to be pre-evacuated first, and high-speed injection can be performed under normal atmospheric pressure, which reduces the injection environment requirements and improves the injection efficiency.
  • the present application further provides an energy storage device, comprising an electrode assembly, a shell, and an end cap assembly described in any one of the various embodiments of the first aspect, wherein the electrode assembly is disposed in the shell, and the end cap assembly is electrically connected to the electrode assembly.
  • an electrical device comprising the energy storage device described in the first aspect, wherein the energy storage device supplies power to the electrical device.
  • FIG1 is a schematic diagram of a scenario of an energy storage device according to an embodiment
  • FIG1A is a perspective view of an energy storage device according to an embodiment
  • FIG2 is a structural diagram of the appearance of a top cover of an embodiment
  • FIG3 is an enlarged schematic diagram of the appearance structure of a top cover and a liquid injection hole according to an embodiment
  • FIG4 is a structural diagram of the appearance of a sealing member according to an embodiment
  • FIG5 is a cross-sectional view of a top cover of an embodiment
  • FIG6 is a schematic cross-sectional view of a liquid injection hole including a first wall surface and a second wall surface according to an embodiment
  • FIG. 7 is a schematic cross-sectional view of a liquid injection hole including a first wall surface and a second wall surface according to another embodiment
  • FIG8 is a schematic cross-sectional view of a liquid injection hole having a rotationally symmetrical structure according to an embodiment
  • FIG8A is a schematic cross-sectional view of a liquid injection hole with a rotationally symmetrical structure according to another embodiment
  • FIG9 is a schematic cross-sectional view of a liquid injection hole with a rotationally symmetrical structure according to another embodiment
  • FIG10 is a top view of a top cover of an embodiment
  • FIG11 is a schematic cross-sectional view of a liquid injection hole according to an embodiment
  • FIG12 is a schematic diagram of the appearance of the sealing member of the injection hole in FIG11;
  • FIG13 is a top view of a top cover of an embodiment
  • FIG14 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to an embodiment
  • FIG. 15 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to another embodiment
  • 16 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to another embodiment
  • FIG. 17 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to another embodiment
  • FIG. 18 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to another embodiment
  • 19 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface and a third wall surface according to another embodiment
  • FIG20 is a structural diagram of the appearance of a sealing member according to an embodiment
  • FIG. 21 is a schematic cross-sectional view of a liquid injection hole including a first wall surface, a second wall surface, a third wall surface, and a fourth wall surface according to an embodiment.
  • a component when a component is said to be “fixed to” another component, it can be directly on the other component or there can be a central component.
  • a component When a component is said to be “connected to” another component, it can be directly connected to the other component or there can be a central component at the same time.
  • an embodiment of the present application provides an energy storage device, in which a chemical battery is provided.
  • the energy storage device mainly utilizes the chemical elements in the chemical battery as the energy storage medium.
  • the charging and discharging process is accompanied by chemical reactions or changes in the energy storage medium.
  • the electric energy generated by wind energy and solar energy is stored in the chemical battery.
  • the use of external electric energy reaches a peak, the stored electricity is released for use, or transferred to places where electricity is scarce for use.
  • energy storage i.e. energy storage
  • power generation side energy storage grid side energy storage
  • renewable energy grid-connected energy storage user side energy storage.
  • energy storage devices include:
  • the embodiments of the present application are described by taking a household energy storage scenario in user-side energy storage as an example.
  • the energy storage device provided in the embodiments of the present application is not limited to the household energy storage scenario.
  • the household energy storage system includes an energy conversion device 200, an electrical device 300, etc., and an energy storage device 100
  • the energy storage device 100 is a small energy storage box, which can be mounted on an outdoor wall by wall hanging
  • the electrical device 300 can be a street lamp or a household appliance, etc.
  • the energy conversion device 200 can be a photovoltaic panel, which can convert solar energy into electrical energy during the period of low electricity prices
  • the energy storage device 100 is used to store the electrical energy and supply it to street lamps and household appliances for use during the peak electricity prices, or to supply power when the power grid is out of power/power outage.
  • the energy storage device 100 may include but is not limited to a single cell, a battery module, a battery pack, a battery system, etc.
  • the energy storage device When the energy storage device is a single cell, it may be a cylindrical battery or a square battery.
  • the present application provides an energy storage device 100, as shown in FIG1A, comprising an electrode assembly, a housing, and an end cap assembly, wherein the electrode assembly is disposed in the housing, and the end cap assembly is electrically connected to the electrode assembly.
  • the end cap assembly is disposed at an opening of the housing and closes the housing.
  • An embodiment of the present application provides an end cover assembly for an energy storage device 100, please refer to Figures 2 to 4, including a top cover 11 and a sealing member 12, wherein an injection hole 111 is provided on the top cover 11, and during the manufacturing process of the energy storage device, an injection needle can be used to inject electrolyte into the interior of the energy storage device 100 through the injection hole 111.
  • the top cover 11 is made of insulating material, specifically plastic material, such as PP (polypropylene) material.
  • the top cover 11 includes an outer surface and an inner surface opposite to each other, and the inner surface is opposite to the electrode assembly of the energy storage device 100.
  • the top cover 11 is in the shape of a plate, and the plate surface is generally circular in shape.
  • the top cover 11 has a length, a width and a thickness. When describing each structure later, the extension direction of the length of the top cover 11 is the length direction, the extension direction of the width is the width direction, and the extension direction of the thickness is the thickness direction.
  • the outer surface and the inner surface are two opposite surfaces in the thickness direction.
  • the injection hole 111 passes through the outer surface and the inner surface along the thickness direction.
  • the wall surface of the top cover 11 used to enclose the injection hole 111 can be called the inner peripheral wall.
  • the inner peripheral wall can include a plurality of connected sub-wall surfaces. It can be understood that the sub-wall surfaces on the inner peripheral wall can be judged by the connection between the two wall surfaces being a non-smooth connection; or the two sub-wall surfaces are the connection of two different surface shapes, such as the connection of a curved surface and a flat surface.
  • the injection hole 111 includes a first wall 1111 and a second wall 1112 connected in the circumferential direction, and the first wall 1111 and the second wall 1112 have an angle, or the angle between the first wall 1111 and the second wall 1112 is 180° and the surface shapes are different, wherein the angle between the first wall 1111 and the second wall 1112 refers to the angle in the tangent direction of the connecting point in the cross section.
  • first wall surface 1111 and the second wall surface 1112 are sequentially connected in the circumferential direction of the injection hole 111.
  • the surface shapes of the first wall surface 1111 and the second wall surface 1112 can be the same or different.
  • the first wall 1111 and the second wall 1112 can both be curved surfaces, and the radius of the first wall 1111 and the radius of the second wall 1112 are different.
  • the angle between the first wall 1111 and the second wall 1112 should be the angle between the corresponding tangents of the two, that is, the first wall 1111 and the second wall 1112 are tangent to the two at the connection point, and the angle at which the two tangents intersect is the angle mentioned above.
  • the injection hole 111 can be formed by the intersection of two circular holes, and the radii of the two circular holes are different.
  • One of the holes can be passed through by the injection needle, and the other hole can be used to discharge gas during injection.
  • the aperture of the hole for the injection needle to pass through can be larger, and the aperture of the hole used to discharge gas can be smaller. In this way, it can be avoided that the electrolyte splashes out of the injection hole 111 during injection.
  • the first wall surface 1111 and the second wall surface 1112 may both be planes, so when the first wall surface 1111 and the second wall surface 1112 have a non-smooth connection, there must be an angle.
  • the injection hole 111 must also include other sub-walls for connecting the first wall surface 1111 and the second wall surface 1112.
  • the cross section of the injection hole 111 is a triangle, a quadrilateral, a hexagon, or a fan.
  • the first wall 1111 or the second wall 1112 is a curved surface. It is understandable that when the first wall 1111 and the second wall 1112 have different surface shapes, a tangent is made to the curved surface at the connection between the first wall 1111 and the second wall 1112, and the angle formed by the obtained tangent and another plane.
  • the seal 12 may be made of an insulating material, specifically an elastic plastic material, such as TPU (thermoplastic polyurethane elastomer rubber).
  • TPU thermoplastic polyurethane elastomer rubber
  • the function of the seal 12 is to accommodate and seal the injection hole 111 after the injection is completed. Therefore, the shape of the seal 12 may be the same as the contour shape of the injection hole 111, and the outer wall of the seal 12 may fit the inner circumferential wall of the injection hole 111, thereby ensuring the sealing of the end cap assembly.
  • the present application provides a liquid injection hole 111 on the top cover 11, so that during the manufacturing process of the energy storage device 100, an injection needle can be used to inject electrolyte into the interior of the energy storage device through the liquid injection hole 111, and in order to ensure the maximum liquid injection efficiency, the liquid injection needle is generally adapted to the largest cylindrical shape (i.e., the largest inner circle) that the liquid injection hole 111 can extend into; and the liquid injection hole 111 is also designed to have a first wall surface 1111 and a second wall surface 1112 connected in the circumferential direction, and the first wall surface 1111 and the second wall surface 1112 have an angle, so that the liquid injection hole 1111 is The cross-sectional shape of 11 is non-circular; thereby, when the injection hole 111 and the injection needle cooperate, the injection hole 111 has at least a portion of the space not occupied by the injection needle, and during the injection process, the gas generated in the energy storage device 100 can be discharged through the above-mentioned unoccupied space, thereby avoiding the situation in
  • the two opposite ends of the first wall 1111 are connected to the second wall 1112, and the two opposite ends of the first wall 1111 have a first angle and a second angle with the second wall 1112 respectively, the first angle ⁇ 1 is 10° ⁇ 1 ⁇ 160°, and the second angle ⁇ 2 is 10° ⁇ 2 ⁇ 160°.
  • the first angle ⁇ 1 can be but not limited to 10°, 15°, 25°, 40°, 60°, 100°, 160°;
  • the second angle ⁇ 2 can be but not limited to 10°, 15°, 25°, 40°, 60°, 100°, 160°.
  • the injection hole 111 in this embodiment is formed by enclosing two curved surfaces, and the specific shape can refer to the above embodiment, which will not be repeated here. Controlling the first angle and the second angle mentioned above within the designed range can reduce the sharp angle of the tangent surface, avoid the difficulty of processing the bare aluminum sheet, and increase the cost; at the same time, it can also avoid the exhaust channel being too narrow and close to the wall of the injection needle, and the gas discharged to the outside is impacted and rolled back into the battery by the high-speed injected electrolyte, reducing the exhaust efficiency.
  • the hole formed for exhausting the gas is too small, which is not conducive to exhausting the gas during rapid injection, and the processing is difficult, increasing the manufacturing cost; when the first angle and the second angle mentioned above are too small, the hole formed for exhausting the gas is too large, which is easy to cause splashing of the electrolyte.
  • the number of the first wall 1111 and the second wall 1112 are both multiple, and the multiple first wall 1111 and the second wall 1112 are arranged in a circular array, and the two opposite ends of the second wall 1112 are respectively connected to the two adjacent first walls 1111.
  • there can be one hole for injection and there can be multiple holes for exhausting gas
  • the cross-sectional shape of the injection hole 111 can be a rotationally symmetrical figure.
  • the cross-section of the injection hole 111 can be formed by two orthogonal ellipses, or by two orthogonal prisms.
  • the injection hole 111 can include an injection area 111A and multiple exhaust areas 111B.
  • the injection area 111A is the largest circular area that can be formed on the cross section of the injection hole 111 (the dotted line in Figures 8 and 9 is enclosed as a circle), and the injection area 111A is used for the injection needle to pass through to achieve injection.
  • the injection hole 111 may have two first walls 1111 and two second walls 1112.
  • the first wall 1111 and the second wall 1112 each enclose a gas exhaust area 111B, and the gas exhaust area 111B is used to exhaust gas during liquid injection.
  • it can be subdivided into the first gas exhaust area 111B1 to the fourth gas exhaust area 111B4, wherein the two first walls 1111 respectively enclose the first gas exhaust area 111B1 and the third gas exhaust area 111B3 relative to each other, and the two second walls 1112 respectively enclose the second gas exhaust area 111B2 and the fourth gas exhaust area 111B4 relative to each other. Therefore, it can be understood that the two opposite ends of the second wall 1112 are respectively connected to the two adjacent first walls 1111.
  • any set of the first wall surface 1111 and the second wall surface 1112 enclose one of the exhaust areas 111B, and the exhaust area 111B is used to exhaust gas during injection. Specifically, it can be subdivided into the first exhaust area 111B1 to the fourth exhaust area 111B4, wherein one end of the first wall surface 1111 is connected to the second wall surface 1112 to enclose the first exhaust area 111B1, and the other end of the first wall surface 1111 that is separated from each other can be connected to the second wall surface 1112 that encloses the fourth exhaust area 111B4.
  • the cross-section of the injection hole 111 can also be other shapes, and the above embodiment is only an adaptability example through simple explanation.
  • the number of exhaust areas 111B can also be two or more, and the cross-sectional shapes of the exhaust areas 111B are not all the same, which is not specifically limited.
  • the injection hole 111 can be a rotationally symmetrical structure.
  • the injection hole 111 can have multiple areas for gas discharge, thereby increasing the efficiency of gas discharge; at the same time, the rotationally symmetrical structure of the injection hole 111 also makes the volume of gas discharged at each position the same, so that the air pressure around the injection needle is balanced.
  • the number of the first wall 1111 and the second wall 1112 are both two, the two first walls 1111 are arranged opposite to each other in a first direction S, the two second walls 1112 are arranged opposite to each other in a second direction L, and the first direction S and the second direction L intersect; the distance from the first wall 1111 to the rotation center of the circular array is greater than the distance from the second wall 1112 to the rotation center of the circular array.
  • first wall surface 1111 and the second wall surface 1112 may have different surface shapes, for example, the first wall surface 1111 may be a curved surface, and the second wall surface 1112 may be a flat surface. Therefore, when there are two first wall surfaces 1111 and two second wall surfaces 1112, the cross-sectional shape of the injection hole 111 may be a rounded rectangle. Furthermore, the distance between the two opposite first wall surfaces 1111 may be greater than the distance between the two opposite second wall surfaces 1112.
  • the distance between the two opposite second walls 1112 should not be less than the outer diameter of the injection needle. It can be understood that when the injection hole 111 is in the shape of a rounded rectangle, the minimum distance between the two opposite walls of the injection hole 111 should meet the size of the injection needle, so that the injection needle can be smoothly inserted. Therefore, when the distance between the two opposite first walls 1111 is large, the injection needle can be inserted at any position in the first direction S of the injection hole 111.
  • the shape of the injection hole 111 can be a rounded rectangle, the space for the injection needle to be inserted is increased, and the injection needle is allowed to have an error in the first direction S, thereby reducing the operation accuracy during injection.
  • the seal 12 has elastic deformation capability, and the degree of deformation of the seal 12 in the first direction S is greater than the degree of deformation of the seal 12 in the second direction L.
  • the cross-sectional shape of the sealing member 12 may also be a rounded rectangle, so as to be compatible with the injection hole 111 .
  • the seal 12 may be set to be interference fit compared to the injection hole 111, that is, the size of the seal 12 is slightly larger than the size of the injection hole 111. Since the seal 12 has elastic deformation capability, the seal 12 can be fixed to the injection hole 111 by compression during installation, and then expand outwards under the action of its own deformation elastic force, so as to make the sealing of the injection port more reliable.
  • the deformation degree of the seal 12 in the first direction S is greater than the deformation degree of the seal 12 in the second direction L
  • the interference degree of the seal 12 in the first direction S is greater than the interference degree in the second direction L. Therefore, when the deformation degree of the seal 12 in the first direction S is greater, its own deformation elastic force is greater, and thus the sealing performance in the first direction S is better.
  • the deformation degree of the sealing member 12 in the first direction S is greater than the deformation degree in the second direction L, This enables the sealing member 12 to have a larger interference fit in the first direction S.
  • the aperture of the injection hole 111 in the first direction S is larger, the sealing effect of the sealing member 12 in the first direction S can be improved.
  • the injection hole 111 also includes a third wall 1113, the third wall 1113 is connected to the second wall 1112, the third wall 1113 and the second wall 1112 have an angle, or the angle between the third wall 1113 and the second wall 1112 is 180° and the surface shapes are different, wherein the angle between the third wall 1113 and the second wall 1112 refers to the angle in the tangent direction of the connecting point in the cross section.
  • the third wall surface 1113 can be connected to the second wall surface 1112 or the first wall surface 1111 in the circumferential direction of the injection hole 111. It can be understood that since there is no specific positional relationship restriction between the first wall surface 1111 and the second wall surface 1112, the third wall surface 1113 can be connected to either of them. That is, the inner peripheral wall includes at least three sub-wall surfaces connected at an angle. In addition, the surface shapes of the first wall surface 1111, the second wall surface 1112 and the third wall surface 1113 can be the same or not completely the same.
  • the first wall 1111, the second wall 1112 and the third wall 1113 can all be curved surfaces, and the radius of the first wall 1111, the radius of the second wall 1112 and the radius of the third wall 1113 are not all the same.
  • the injection hole 111 can be formed by the intersection of three circular holes, and the radii of the three circular holes are not all the same.
  • One of the holes can be passed through by the injection needle, and the other two holes can be used to discharge gas during injection.
  • the aperture of the hole for the injection needle to pass through can be larger, and the aperture of the hole for discharging gas can be smaller.
  • the aperture of the hole used to discharge gas can be the same or different. In this way, it can be avoided that the electrolyte splashes out of the injection hole 111 during injection.
  • first wall 1111, the second wall 1112 and the third wall 1113 are all planes, the above embodiments can be referred to, and no further description is given here.
  • the outer wall of the injection needle can be connected to the first wall 1111, the second wall 1112 and the third wall 1113 respectively.
  • At least one of the first wall surface 1111, the second wall surface 1112 and the third wall surface 1113 is a curved surface.
  • the cross-sectional shape of the formed injection hole 111 can be a fan shape or other irregular shapes.
  • the third wall 1113 By setting the third wall 1113 on the injection hole 111, and connecting the third wall 1113 to the second wall 1112 at an angle, at least one of the three connected walls can fit with the injection needle, which is beneficial for ensuring the adaptation of the injection hole 111 to the injection needle when the injection needle is too large.
  • the two opposite ends of the third wall 1113 are respectively connected to the second wall 1112 and the first wall 1111, and have a third angle and a fourth angle
  • the third angle ⁇ 1 is 10° ⁇ 1 ⁇ 160°
  • the fourth angle ⁇ 2 is 10° ⁇ 2 ⁇ 160°.
  • the third angle ⁇ 1 can be, but not limited to, 10°, 15°, 25°, 40°, 60°, 100°, 160°
  • the fourth angle ⁇ 2 can be, but not limited to, 10°, 15°, 25°, 40°, 60°, 100°, 160°.
  • the injection hole 111 in this embodiment can be surrounded by a total of three sub-walls, and the specific shape of the sub-walls is not limited, and can refer to the above embodiment, and will not be repeated here.
  • the sharp angles of the tangent surfaces can be reduced, thereby avoiding difficulties in processing the bare aluminum sheet and increasing costs.
  • it can also prevent the exhaust channel from being too narrow and close to the wall of the injection needle, so that the gas discharged to the outside is impacted and rolled back into the battery by the high-speed injected electrolyte, reducing the exhaust efficiency.
  • the number of the first wall 1111, the second wall 1112 and the third wall 1113 is multiple, and the multiple first wall 1111, the second wall 1112 and the third wall 1113 are arranged in a circular array.
  • the hole for injection can be one, and the hole for exhausting gas can be multiple, and the cross-sectional shape of the injection hole 111 can be a rotationally symmetrical figure.
  • the injection hole 111 may include an injection area 111A and a plurality of exhaust areas 111B.
  • the injection area 111A is the largest circular area that can be formed on the cross section of the injection hole 111 (the circle enclosed by the dotted line in FIGS. 16 to 18 ). Used for the injection needle to pass through to achieve injection.
  • the first wall 1111 and the second wall 1112 can both be planes, and the third wall 1113 is a curved surface.
  • the first wall 1111 and the second wall 1112 can both be curved surfaces, and the third wall 1113 is also a curved surface (the dotted lines in Figures 16 and 17 enclose the circular injection area 111A).
  • the first wall 1111 and the second wall 1112 enclose one of the exhaust areas 111B, and the exhaust area 111B is used to exhaust gas during liquid injection.
  • first exhaust area 111B1 can be subdivided into the first exhaust area 111B1 to the fourth exhaust area 111B4, wherein one end of the first wall 1111 is connected to the second wall 1112 to enclose the first exhaust area 111B1, and the other end of the first wall 1111 that is opposite to each other can be connected to the third wall 1113.
  • the first wall 1111 and the third wall 1113 may respectively enclose the exhaust area 111B (the circular injection area 111A enclosed by the dotted line in FIG. 18 ). Specifically, it can be subdivided into the first exhaust area 111B1 to the fourth exhaust area 111B4, wherein the two first walls 1111 respectively enclose the first exhaust area 111B1 and the third exhaust area 111B3 relative to each other, and the two third walls 1113 respectively enclose the second exhaust area 111B2 and the fourth exhaust area 111B4 relative to each other. Therefore, it can be understood that the two opposite ends of the first wall 1111 are respectively connected to the two adjacent second walls 1112, and the two opposite ends of the third wall 1113 are respectively connected to the two adjacent second walls 1112.
  • the radius of curvature of the third wall surface 1113 may be not less than the outer diameter of the injection needle, so that during injection, the third wall surface 1113 may fit with the outer wall of the injection needle.
  • the plurality of third walls 1113 may stabilize and reinforce the injection needle, thereby preventing the injection needle from shaking during injection and causing electrolyte splashing.
  • the injection hole 111 can be a rotationally symmetrical structure.
  • the injection hole 111 can have multiple areas for gas discharge, thereby increasing the efficiency of gas discharge; at the same time, the rotationally symmetrical structure of the injection hole 111 also makes the volume of gas discharged at each position the same, so that the air pressure around the injection needle is balanced.
  • the injection hole 111 when the cross-sectional shape of the injection hole 111 is a rounded rectangle, the injection hole 111 can be surrounded by a first wall 1111, a second wall 1112, and a third wall 1113, respectively.
  • the first wall 1111 and the third wall 1113 can be planes, and there are two of them, the two first walls 1111 are arranged opposite to each other in the first direction S, and the two third walls 1113 are arranged opposite to each other in the second direction L; the second wall 1112 can be a curved surface, and there are four of them, which are respectively located at four opposite corners.
  • Other features of the rounded rectangular injection hole 111 can refer to the above embodiment, and will not be repeated here.
  • connection point between the first wall surface 1111 and the second wall surface 1112 can be transitioned by chamfering. It can be understood that designing a chamfer at the connection point is to add a curved surface so that the connection point transitions to a circular arc to avoid being too sharp. Therefore, the chamfering transition is to add a chamfered surface R to the first wall surface 1111 and the second wall surface 1112 so that the injection hole 111 has at least three curved surfaces. It can be understood that the chamfered surface R is the second wall surface 1112 in the above embodiment, and the original second wall surface 1112 becomes the third wall surface 1113. For details, please refer to the above embodiment, and no further details will be given here.
  • the first wall 1111, the second wall 1112 and the third wall 1113 are all smoothly connected curved surfaces; multiple first walls 1111, multiple second walls 1112 and multiple third walls 1113 enclose a circular injection area 111A and four exhaust areas 111B, and the exhaust areas 111B are rotationally symmetrically arranged on the periphery of the injection area 111A, and the injection area 111A is used for the insertion of the injection needle.
  • the injection area 111A is the largest circular area that can be formed on the cross section of the injection hole 111 (the dotted line in FIG8A is a circle), and the injection area 111A is used for the injection needle to pass through to achieve injection.
  • the four exhaust areas 111B can be arranged in a circular array with equal spacing.
  • the injection hole 111 is provided with four rotationally symmetrical exhaust areas 111B, so that the gas inside the energy storage device 100 can be exhausted from four directions of the injection hole 111 , thereby improving the uniformity of exhaust.
  • the four exhaust areas 111B include two first exhaust areas 111B1 and two second exhaust areas 111B2.
  • the two first exhaust areas 111B1 are oppositely disposed, and the two second exhaust areas 111B2 are oppositely disposed.
  • the projection area of the first exhaust area 111B1 is smaller than the projection area of the second exhaust area 111B2.
  • the four exhaust areas 111B may be respectively located in four directions of the liquid injection area 111A, and the two first exhaust areas 111B1 are arranged opposite to each other, and the two second exhaust areas 111B2 are arranged opposite to each other.
  • the first exhaust area 111B1 can be arranged relatively in the second direction L, and the second exhaust area 111B2 can be arranged relatively in the first direction S.
  • the size of the first exhaust area 111B1 in the second direction L is smaller than the size of the second exhaust area 111B2 in the first direction S. That is, the length of the injection hole 111 in the first direction S is greater than the length in the second direction L.
  • injection holes 111 with different length-to-width ratios can be provided, which is beneficial for adapting to the exhaust space of the square energy storage device.
  • the injection hole 111 also includes a fourth wall 1114, the fourth wall 1114 is connected to the first wall 1111, the fourth wall 1114 and the first wall 1111 have an angle, or the angle between the fourth wall 1114 and the first wall 1111 is 180° and the surface shapes are different, wherein the angle between the fourth wall 1114 and the first wall 1111 refers to the angle in the tangent direction of the connecting point in the cross section.
  • the fourth wall surface 1114 can be connected to the first wall surface 1111 in the circumferential direction of the injection hole 111.
  • the surface shape of the fourth wall surface 1114 is not specifically limited.
  • the two opposite ends of the fourth wall surface 1114 can be connected to the first wall surface 1111 and the third wall surface 1113 respectively. Therefore, the injection hole 111 can be formed by the intersection of a circular hole and a square hole.
  • the exhaust area 111B is formed by the fourth wall surface 1114, the first wall surface 1111 and the second wall surface 1112.
  • the number of the first wall 1111, the second wall 1112, the third wall 1113 and the fourth wall 1114 is multiple, and the multiple first walls 1111, the second wall 1112, the third wall 1113 and the fourth wall 1114 are arranged in a circular array.
  • the specific features can be referred to the above embodiment, which will not be repeated here.
  • the wall surface of the injection hole 111 may also include a fifth wall surface and above. It is understandable that the present application designs the sub-wall surfaces on the inner peripheral wall to have a connection angle, so that the shape of the injection hole 111 can have a structure other than a circular shape, and can have a ventilating function while meeting the injection requirements, and prevent the battery from swelling when injecting electrolyte, so the number of sub-wall surfaces on the inner peripheral wall is not specifically limited.
  • the embodiment of the present application also provides an electrical device, including the energy storage device 100 in the embodiment of the present application, and the energy storage device 100 is used to supply power to the electrical device.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling, Topping-Up Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种端盖组件、储能装置（100）和用电设备（300），端盖组件包括顶盖（11），顶盖（11）包括相背的外表面和内表面，顶盖（11）开设有注液孔（111），注液孔（111）贯穿外表面和内表面；注液孔（111）包括在周向上相连的第一壁面（1111）和第二壁面（1112），第一壁面（1111）与第二壁面（1112）具有夹角，其中，第一壁面（1111）与第二壁面（1112）的夹角是指在横截面中相接点的切线方向的夹角。

Description

端盖组件、储能装置和用电设备
本申请要求于2023年03月30日提交中国专利局、申请号为202310331617.0、申请名称为“端盖组件、储能装置和用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及储能技术领域，具体涉及一种端盖组件、储能装置和用电设备。
背景技术
二次电池(Rechargeable battery)又称为充电电池或蓄电池，是指在电池放电后可通过充电的方式使活性物质激活而继续使用的电池。二次电池的可循环利用特性使其逐渐成为用电设备的主要动力来源，随着二次电池的需求量逐渐增大，人们对其各方面的性能要求也越来越高，尤其是对于电池循环性能的要求，而电池的注液量是保证电池循环性能的重要参数，注液量过少会导致循环衰减过快，造成电池的使用寿命衰减过快。但过多的注液量又会造成电池胀液，破坏电池的整体结构。
在传统的二次电池如锂电池注液生产时，一般用人工注液方式，进行一对一的注液孔加注电解液，注液精度低、生产效率低、安全性差。虽然现有技术中也出现了真空倒吸式和正向注液式两种形式，但真空倒吸式注液方式对设备管路的密封性要求较高，且有可能造成外壳收缩变形；而正向注液方式也存在注液精度控制难度大，易造成外壳鼓包变形的技术问题。
以正向注液为例，注液时，二次电池内部气体无法通过注液孔排出，所以导致电池鼓包膨胀，极易发生安全事故，所以如何解决在注液时气体流动的问题成为了关键。
发明内容
本申请的目的是提供一种可提高安全性能的端盖组件、储能装置和用电设备。
为实现本申请的目的，本申请提供了如下的技术方案：
第一方面，本申请提供一种端盖组件，用于储能装置，包括顶盖，所述顶盖包括相背的外表面和内表面，所述顶盖开设有注液孔，所述注液孔贯穿所述外表面和所述内表面；所述注液孔包括在周向上相连的第一壁面和第二壁面，所述第一壁面与所述第二壁面具有夹角，或者，所述第一壁面与所述第二壁面的夹角为180°且面型不同，其中，所述第一壁面与所述第二壁面的夹角是指在横截面中相接点的切线方向的夹角。
本申请通过在顶盖上开设注液孔，使得在储能装置的制造过程中，可以利用注液针通过注液孔向储能设备的内部注射电解液；并且，还设计注液孔在周向上具有相连接的第一壁面和第二壁面，第一壁面和第二壁面具有夹角，以此使得注液孔的横截面形状为非圆形；以此使得在注液孔和注液针相配合时，注液孔具有至少部分空间未被注液针占据，而注液的过程中，储能装置内的产生的气体可以通过上述中未被占据的空间而排出，避免了注液过程中储能装置内部气压过大造成外壳鼓包变形的情况，二次电池注液可以不需要先预抽真空，在正常大气压下进行高速注液，降低了注液环境要求的同时，提升了注液效率。
第二方面，本申请还提供一种储能装置，所述储能装置包括电极组件、壳体以及第一方面各种实施方式中任一项所述的端盖组件，所述电极组件设置于所述壳体内，所述端盖组件电连接于所述电极组件。
第三方面，一种用电设备，所述用电设备包括第人方面所述的储能装置，所述储能装置为所述用电设备供电。
附图说明
为了更清楚地说明本申请实施方式或现有技术中的技术方案，下面将对实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施方式，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的附图。
图1是一种实施例的储能装置的场景示意图；
图1A是一种实施例的储能装置的立体图；
图2是一种实施例的顶盖的外观结构图；
图3是一种实施例的顶盖的外观结构以及注液孔的放大示意图；
图4是一种实施例的密封件的外观结构图；
图5是一种实施例的顶盖的截面图；
图6是一种实施例的包括第一壁面和第二壁面的注液孔横截面示意图；
图7是另一种实施例的包括第一壁面和第二壁面的注液孔横截面示意图；
图8是一种实施例的旋转对称结构的注液孔横截面示意图；
图8A是另一种实施例的旋转对称结构的注液孔横截面示意图；
图9是另一种实施例的旋转对称结构的注液孔横截面示意图；
图10是一种实施例的顶盖的俯视图；
图11是一种实施例的注液孔的横截面示意图；
图12是图11中的注液孔的密封件的外观示意图；
图13是一种实施例的顶盖的俯视图；
图14是一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图15是另一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图16是另一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图17是另一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图18是另一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图19是另一种实施例的包括第一壁面、第二壁面和第三壁面的注液孔横截面示意图；
图20是一种实施例的密封件的外观结构图；
图21是一种实施例的包括第一壁面、第二壁面、第三壁面和第四壁面的注液孔横截面示意图。
附图标记说明：
100-储能装置，200-电能转换装置，300-用电设备；
11-顶盖，12-密封件，111-注液孔，1111-第一壁面，1112-第二壁面，1113-第三壁面，1114-
第四壁面，111A-注液区，111B-排气区，S-第一方向，L-第二方向。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。
除非另有定义，本申请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。本申请中在说明书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。本申请所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
由于人们所需要的能源都具有很强的时间性和空间性，为了合理利用能源并提高能量的利用率，需要通过一种介质或者设备，把一种能量形式用同一种或者转换成另外一种能量形式存储起来，基于未来应用需要再以特定能量形式释放出来。众所周知，要实现碳中和的大目标，目前绿色电能的产生主要途径是发展光伏、风电等绿色能源来替代化石能源。
目前绿色电能的产生普遍依赖于光伏、风电、水势等，而风能和太阳能等普遍存在间歇性强、波动性大的问题，会造成电网不稳定、用电高峰电不够、用电低谷电太多，不稳定的电压还会对电力造成损害，因此可能因为用电需求不足或电网接纳能力不足，引发“弃风弃光”问题，要解决这些问题须依赖储能，即将电能通过物理或者化学的手段转化为其他形式的能量存储起来，在需要的时候将能量转化为电能释放出来。简单来说，储能类似一个大型“充电宝”，在光伏、风能充足时，将电能储存起来，在需要时释放储能的电力。
以电化学储能为例，本申请实施例提供一种储能装置，储能装置内设有化学电池，主要是利用化学电池内的化学元素做储能介质，充放电过程伴随储能介质的化学反应或者变化，简单说就是把风能和太阳能产生的电能存在化学电池中，在外部电能的使用达到高峰时再将存储的电量释放出来使用，或者转移给电量紧缺的地方再使用。
目前的储能(即能量存储)应用场景较为广泛，包括发电侧储能、电网侧储能、可再生能源并网储能以及用户侧储能等方面，对应的储能装置的种类包括有：
(1)应用在电网侧储能场景的大型储能集装箱，其可作为电网中优质的有功无功调节电源，实现电能在时间和空间上的负荷匹配，增强可再生能源消纳能力，并在电网系统备用、缓解高峰负荷供电压力和调峰调频方面意义重大；
(2)应用在用户侧的工商业储能场景(银行、商场等)的中小型储能电柜以及应用在用户侧的家庭储能场景的户用小型储能箱，主要运行模式为“削峰填谷”。由于根据用电量需求在峰谷位置的电费存在较大的价格差异，用户有储能设备后，为了减少成本，通常在电价低谷期，对储能柜/箱进行充电处理；电价高峰期，再将储能设备中的电放出来进行使用，以达到节省电费的目的。另外，在边远地区，以及地震、飓风等自然灾害高发的地区，家用储能装置的存在，相当于用户为自己和电网提供了备用电源，免除由于灾害或其他原因导致的频 繁断电带来的不便。
本申请实施例以用户侧储能中的家用储能场景为例进行说明，本申请实施例提供的储能装置并不限定于家用储能场景。
本申请实施例提供一种户用储能系统，如图1所示，该户用储能系统包括电能转换装置200、用电设备300等以及储能装置100，该储能装置100为一小型储能箱，可通过壁挂方式安装于室外墙壁，用电设备300可以为路灯或家用电器等。具体地，电能转换装置200可以为光伏板，光伏板可以在电价低谷时期将太阳能转换为电能，储能装置100用于储存该电能并在电价高峰时供给路灯和家用电器进行使用，或者在电网断电/停电时进行供电。
可以理解的是，储能装置100可包括但不限于单体电池、电池模组、电池包、电池系统等。当该储能装置为单体电池时，其可为圆柱电池或方形电池。
本申请实施例提供一种储能装置100，请参考图1A，包括电极组件、壳体以及端盖组件，电极组件设置于壳体内，端盖组件电连接于电极组件。端盖组件盖设在壳体的开口处并封闭壳体。
本申请实施例提供一种用于储能装置100的端盖组件，请参考图2至图4，包括顶盖11和密封件12，其中顶盖11上开设有注液孔111，储能设备制造过程中可以通过注液针穿过注液孔111向储能装置100的内部注射电解液。
顶盖11为绝缘材质，具体可为塑料材质，例如PP(聚丙烯)材质。顶盖11包括相背的外表面和内表面，内表面与储能装置100的电极组件相对。顶盖11呈板状，板面大体形状呈圆形，顶盖11具有长度、宽度和厚度，后续描述各结构时，以顶盖11的长度的延伸方向为长度方向，宽度的延伸方向为宽度方向，厚度的延伸方向为厚度方向。外表面和内表面为厚度方向上相背的两面。注液孔111沿厚度方向贯穿外表面和内表面。
顶盖11用于围合注液孔111的壁面可以称之为内周壁。内周壁可以包括多个相连接的子壁面。可以理解的，内周壁上的子壁面的判断方式可以为，两个壁面之间具有连接为非平滑的连接处；或者两个子壁面为两中不同面型的接合，例如曲面和平面的接合。
一种实施方式中，请参考图3和图5，注液孔111包括在周向上相连的第一壁面1111和第二壁面1112，第一壁面1111与第二壁面1112具有夹角，或者，第一壁面1111与第二壁面1112的夹角为180°且面型不同，其中，第一壁面1111与第二壁面1112的夹角是指在横截面中相接点的切线方向的夹角。
可选的，第一壁面1111和第二壁面1112在注液孔111的周向呈依次连接。并且，第一壁面1111和第二壁面1112的面型可以相同或不同。
举例而言，请参考图6和图7，第一壁面1111和第二壁面1112可以均为曲面，且第一壁面1111的半径和第二壁面1112的半径不同。同时，第一壁面1111和第二壁面1112所具有的夹角应该为二者对应切线的夹角，即在第一壁面1111和第二壁面1112的连接处分别对二者做切线，得到的两条切线相交的角度即为上述中的夹角。可以理解的，注液孔111可以由两个圆形孔洞相交而形成，并且两个圆形孔洞的半径不同。其中一个孔洞可以供注液针穿过，另一个孔洞可以用于注液时排出气体。可选的，供注液针穿过的孔洞的孔径可以较大，用于排出气体的孔洞的孔径可以较小。以此，可以避免注液时，电解液从注液孔111中溅出。
在其他实施方式中，第一壁面1111和第二壁面1112可以均为平面，所以第一壁面1111和第二壁面1112具有非平滑的连接处时，必然具有夹角。当然，在第一壁面1111和第二壁面1112可以均为平面的情况下，注液孔111必然还会包括其他的子壁面用于连接第一壁面1111和第二壁面1112。例如，在注液孔111的横截面为三角形、四边形、六边形或扇形等。
在其他实施方式中，第一壁面1111或第二壁面1112为曲面。可以理解的，当第一壁面1111和第二壁面1112的面型不同时，在第一壁面1111和第二壁面1112的连接处对其中的曲面做切线，得到的切线与另一平面所成的夹角。
可选的，密封件12可以为绝缘材质，具体可为弹性塑料材质，例如TPU(热塑性聚氨酯弹性体橡胶)材质。密封件12的作用为在注液完成后可以容置并封闭注液孔111。所以，密封件12的形状可以与注液孔111的轮廓形状相同，并且密封件12的外壁可以与注液孔111的内周壁相贴合，以此保证端盖组件的密封性。
本申请通过在顶盖11上开设注液孔111，使得在储能装置100的制造过程中，可以利用注液针通过注液孔111向储能设备的内部注射电解液，而且为保证最大注液效率，注液针一般为适配注液孔111能伸入的最大圆筒状(即最大内圆)；并且，还设计注液孔111在周向上具有相连接的第一壁面1111和第二壁面1112，第一壁面1111和第二壁面1112具有夹角，以此使得注液孔111的横截面形状为非圆形；以此使得在注液孔111和注液针相配合时，注液孔111具有至少部分空间未被注液针占据，而注液的过程中，储能装置100内的产生的气体可以通过上述中未被占据的空间而排出，避免了注液过程中储能装置100内部气压过大造成外壳鼓包变形的情况，二次电池注液可以不需要先预抽真空，在正常大气压下进行高速注液，降低了注液环境要求的同时，提升了注液效率。
一种实施方式中，请参考图6和图7，第一壁面1111相背离的两端均连接第二壁面1112，第一壁面1111相背离的两端分别与第二壁面1112具有第一夹角和第二夹角，第一夹角α1为10°≤α1≤160°，第二夹角α2为10°≤α2≤160°。其中，第一夹角α1具体可以但不限于为10°、15°、25°、40°、60°、100°、160°；第二夹角α2具体可以但不限于为10°、15°、25°、40°、60°、100°、160°。可以理解的，本实施方式中的注液孔111是通过两个曲面围合而成，具体形状可以参照上述实施方式，在此不做赘述。将上述中的第一夹角和第二夹角控制在设计的范围内，可以减小曲面相切的尖角，避免光铝片加工困难，造成成本增加；同时，还可以避免排气通道过于狭窄且贴近注液针壁面，向外排出的气体被高速注射的电解液冲击反卷带回电池内部，降低了排气效率。当上述中的第一夹角和第二夹角过大时，所形成的排出气体的孔洞过小，不利于在快速注液时将气体排出，且加工困难，增加制造成本；当上述中的第一夹角和第二夹角过小时，所形成的排出气体的孔洞过大，容易造成电解液的飞溅。
一种实施方式中，请参考图8和图9，第一壁面1111和第二壁面1112的数量均为多个，且多个第一壁面1111和第二壁面1112呈环形阵列排布，第二壁面1112相背离的两端分别连接相邻的两个第一壁面1111。具体的，在上述实施方式的基础上，用于注液的孔洞可以为一个，且排出气体的孔洞可以为多个，注液孔111的横截面形状可以为旋转对称图形。举例而言，注液孔111的横截面可以为两个椭圆形正交而形成，或者为两个棱形正交而形成。其中，注液孔111可以包括一个注液区111A和多个排气区111B。注液区111A即为注液孔111的截面上所可以形成的最大圆形区域(图8和图9中虚线所围合为圆形)，注液区111A用于供注液针穿过实现注液。
可选的，请参考图8，当注液孔111的横截面为两个椭圆形正交而形成时，注液孔111上可以具有两个第一壁面1111和两个第二壁面1112。第一壁面1111和第二壁面1112分别各自围合一个排气区111B，排气区111B用于在注液时排出气体。具体可以被细分为第一排气区111B1至第四排气区111B4，其中两个第一壁面1111分别围合相对的第一排气区111B1和第三排气区111B3，两个第二壁面1112分别围合相对的第二排气区111B2和第四排气区111B4。所以可以理解的，第二壁面1112相背离的两端分别连接相邻的两个第一壁面1111。
可选的，请参考图9，当注液孔111的横截面为两个棱形正交而形成时，任意一组第一壁面1111和第二壁面1112围合其中一个排气区111B，排气区111B用于在注液时排出气体。具体可以被细分为第一排气区111B1至第四排气区111B4，其中第一壁面1111的一端连接第二壁面1112以围合第一排气区111B1，并且该第一壁面1111相背离的另一端可以与围合第四排气区111B4的第二壁面1112连接。
当然，在其他实施方式中，注液孔111的横截面还可以为其他形状，上述实施方式仅为通过简单说明的适应性示例。在其他实施方式中，排气区111B的数量还可以为两个或两个以上，且排气区111B的横截面形状不全相同，具体不做限制。
通过设置第一壁面1111和第二壁面1112的数量为多个，且均呈环形阵列排布的方式，使得注液孔111可以为旋转对称结构，注液孔111除了用于供注液针插入的区域外，可以具有多个供气体排出的区域，以此增加气体排出的效率；同时，旋转对称结构的注液孔111也使得气体在各个位置排出的体量可以相同，使得注液针周围的气压均衡。
一种实施方式中，请参考图10和图11，第一壁面1111和第二壁面1112的数量均为两个，两个第一壁面1111在第一方向S上相对设置，两个第二壁面1112在第二方向L上相对设置，第一方向S和第二方向L相交；第一壁面1111到呈环形阵列排布的旋转中心距离大于第二壁面1112到呈环形阵列排布的旋转中心距离。
具体的，第一壁面1111和第二壁面1112的面型可以不同，例如第一壁面1111的可以为曲面，第二壁面1112可以为平面。所以当第一壁面1111和第二壁面1112的数量均为两个时，注液孔111的横截面形状可以为圆角矩形。并且，相对的两个第一壁面1111之间的距离可以大于相对的两个第二壁面1112之间的距离。
可选的，相对的两个第二壁面1112之间的距离应该不小于注液针的外径。可以理解的，当注液孔111的形状为圆角矩形时，注液孔111相对的两个壁面之间的最小距离应该要满足注液针的尺寸，以此才可以使得注液针能够顺利插入。所以在相对的两个第一壁面1111之间的距离较大时，注液针可以在注液孔111的第一方向S上的任意位置插入。
通过将两个第一壁面1111在第一方向S上相对设置，两个第二壁面1112在第二方向L上相对设置，且第一壁面1111到呈环形阵列排布的旋转中心距离大于第二壁面1112到呈环形阵列排布的旋转中心距离，使得注液孔111的形状可以为圆角矩形，供注液针插入的空间变大，在第一方向S上允许注液针能够具有误差，降低了注液时的操作精度。
一种实施方式中，请参考图12，密封件12具有弹性变形能力，密封件12在第一方向S上的形变程度大于密封件12在第二方向L上的形变程度。
具体的，在上述实施方式的基础上，密封件12的横截面形状也可以为圆角矩形。以此可以与注液孔111适配。
可选的，密封件12相比注液孔111可以为过盈设置，即密封件12的尺寸略大于注液孔111给的尺寸。由于密封件12具有弹性变形能力，密封件12在安装时可以通过压缩被固定在注液孔111，然后在其自身变形弹性力的作用下向外膨胀以此使得对注液口的密封更加可靠。
可选的，当密封件12在第一方向S上的形变程度大于密封件12在第二方向L上的形变程度时，即可以理解为密封件12在第一方向S上的过盈度大于在第二方向L上的过盈度。所以密封件12在第一方向S上的形变程度较大时，其自身的变形弹性力越大，从而在第一方向S上的密封性更好。
通过设置密封件12在第一方向S上的形变程度大于在所述第二方向L上的形变程度， 使得密封件12能够在第一方向S上具有较大的过盈量，当注液孔111在第一方向S上的孔径较大时，可以提升密封件12在第一方向S上的密封效果。
一种实施方式中，请参考图13和图14，注液孔111还包括第三壁面1113，第三壁面1113连接第二壁面1112，第三壁面1113与第二壁面1112具有夹角，或者，第三壁面1113与第二壁面1112的夹角为180°且面型不同，其中，第三壁面1113与第二壁面1112的夹角是指在横截面中相接点的切线方向的夹角。
具体的，第三壁面1113可以在注液孔111的周向上与第二壁面1112或第一壁面1111连接。可以理解的，由于第一壁面1111和第二壁面1112并无具体的位置关系限制，所以第三壁面1113与二者中的任一个均可以连接。即内周壁至少包括三个呈夹角连接的子壁面。并且，第一壁面1111、第二壁面1112和第三壁面1113的面型可以相同或不全相同。
可选的，请参考图14，第一壁面1111、第二壁面1112和第三壁面1113可以均为曲面，且第一壁面1111的半径、第二壁面1112的半径以及第三壁面1113的半径不全相同。可以理解的，注液孔111可以由三个圆形孔洞相交而形成，并且三个圆形孔洞的半径不全相同。其中一个孔洞可以供注液针穿过，另外两个孔洞可以用于注液时排出气体。可选的，供注液针穿过的孔洞的孔径可以较大，用于排出气体的孔洞的孔径可以较小。可选的，用于排出气体的孔洞的孔径可以相同或不同。以此，可以避免注液时，电解液从注液孔111中溅出。
在其他实施方式中，请参考图15，第一壁面1111、第二壁面1112和第三壁面1113均为平面时，可以参照上述实施方式，在此不做赘述。其中注液针的外壁可以分别与第一壁面1111、第二壁面1112和第三壁面1113相连接。
在其他实施方式中，第一壁面1111、第二壁面1112和第三壁面1113中至少一个为曲面。所形成注液孔111的横截面形状可以为扇形或其他不规则图形。
通过在注液孔111上设置第三壁面1113，并且第三壁面1113与第二壁面1112为夹角连接，以此使得三个相连接的壁面中至少可以存在一个与注液针的相贴合，有利于在注液针尺寸过大时，也能够确保注液孔111于注液针的适配。
一种实施方式中，请参考图14，第三壁面1113相背离的两端分别连接第二壁面1112和第一壁面1111，并具有第三夹角和第四夹角，第三夹角β1为10°≤β1≤160°，第四夹角β2为10°≤β2≤160°。其中，第三夹角β1具体可以但不限于为10°、15°、25°、40°、60°、100°、160°；第四夹角β2具体可以但不限于为10°、15°、25°、40°、60°、100°、160°。可以理解的，本实施方式中的注液孔111可以由共三个子壁面围合而成，所述子壁面的具体形状不做限制，可以参照上述实施方式，在此不做赘述。将上述中的第三夹角和第四夹角控制在设计的范围内，可以减小曲面相切的尖角，避免光铝片加工困难，造成成本增加；同时，还可以避免排气通道过于狭窄且贴近注液针壁面，向外排出的气体被高速注射的电解液冲击反卷带回电池内部，降低了排气效率。
一种实施方式中，请参考图16至图18，第一壁面1111、第二壁面1112和第三壁面1113的数量均为多个，且多个第一壁面1111、第二壁面1112和第三壁面1113呈环形阵列排布。具体的，在上述实施方式的基础上，用于注液的孔洞可以为一个，且排出气体的孔洞可以为多个，注液孔111的横截面形状可以为旋转对称图形。举例而言，在现有圆形注液孔111的基础上，在注液孔111的内周壁上形成有多个凹槽，凹槽沿顶盖11的厚度方向贯穿外表面和内表面，多个凹槽绕注液孔111的轴线呈环形阵列排布，以此形成本申请所提供的注液孔111。其中，注液孔111可以包括一个注液区111A和多个排气区111B。注液区111A即为注液孔111的截面上所可以形成的最大圆形区域(图16至图18中虚线所围合为圆形)，注液区111A 用于供注液针穿过实现注液。
可选的，请参考图16和图17，第一壁面1111和第二壁面1112可以均为平面，第三壁面1113为曲面。或者，第一壁面1111和第二壁面1112可以均为曲面，第三壁面1113也为曲面(图16和图17中虚线所围合为圆形的注液区111A)。其中第一壁面1111和第二壁面1112围合其中一个排气区111B，排气区111B用于在注液时排出气体。具体可以被细分为第一排气区111B1至第四排气区111B4，其中第一壁面1111的一端连接第二壁面1112以围合第一排气区111B1，并且该第一壁面1111相背离的另一端可以与第三壁面1113连接。
可选的，请参考图18，第一壁面1111、第二壁面1112和第三壁面1113均为曲面时，还可以为其中第一壁面1111和第三壁面1113分别围合排气区111B(图18中虚线所围合为圆形的注液区111A)。具体可以被细分为第一排气区111B1至第四排气区111B4，其中两个第一壁面1111分别围合相对的第一排气区111B1和第三排气区111B3，两个第三壁面1113分别围合相对的第二排气区111B2和第四排气区111B4。所以可以理解的，第一壁面1111相背离的两端分别连接相邻的两个第二壁面1112，第三壁面1113相背离的两端分别连接相邻的两个第二壁面1112。
可选的，第三壁面1113的曲率半径可以不小于注液针的外径，以此在注液时，第三壁面1113可以与注液针的外壁相贴合。从而多个第三壁面1113第注液针可以起到稳定加固的作用，避免注液时注液针晃动而造成电解液飞溅。
通过设置第一壁面1111、第二壁面1112和第三壁面1113的数量为多个，且均呈环形阵列排布的方式，使得注液孔111可以为旋转对称结构，注液孔111除了用于供注液针插入的区域外，可以具有多个供气体排出的区域，以此增加气体排出的效率；同时，旋转对称结构的注液孔111也使得气体在各个位置排出的体量可以相同，使得注液针周围的气压均衡。
一种实施方式中，请参考图19，当注液孔111的横截面形状为圆角矩形时，注液孔111可以分别由第一壁面1111、第二壁面1112和第三壁面1113围合。其中，第一壁面1111和第三壁面1113均可以为平面，且各为两个，两个第一壁面1111在第一方向S上相对设置，两个第三壁面1113在第二方向L上相对设置；第二壁面1112可以为曲面，且数量为四个，分别位于相对的四个角上。圆角矩形的注液孔111的其他特征可以参照上述实施方式，在此不做赘述。
一种实施方式中，请参考图8A，第一壁面1111和第二壁面1112之间的连接点可以通过倒角过度。可以理解的，在连接点处设计倒角即为添加一个弧面，使得连接点位圆弧过渡，避免过于尖锐。所以，倒角过度即为在第一壁面1111和第二壁面1112添加倒角面R，使得注液孔111具有至少三个曲面。可以理解为倒角面R为上述实施方式中的第二壁面1112，原第二壁面1112成为第三壁面1113，具体可参照上述实施方式，在此不做赘述。
一种实施方式中，请参考图2和图8A，第一壁面1111、第二壁面1112和第三壁面1113之间均为平滑连接的曲面；多个第一壁面1111、多个第二壁面1112和多个第三壁面1113围合圆形的注液区111A以及四个排气区111B，排气区111B在注液区111A的外周为旋转对称排布，注液区111A用于供注液针插入。
具体的，在上述实施方式的基础上，注液区111A即为注液孔111的截面上所可以形成的最大圆形区域(图8A中虚线所围合为圆形)，注液区111A用于供注液针穿过实现注液。四个排气区111B可以为环阵等距排布。
通过设置第一壁面1111、第二壁面1112和第三壁面1113之间均为平滑连接的曲面有利于制作密封件12的时候控制形变量(尖锐或平面之间的连接不好控制形变量)；并且，利用 设置注液孔111具有四个旋转对称的排气区111B，使得储能装置100内部的气体可以从注液孔111四个方向排出，以此提升排气的均匀性。
一种实施方式中，请参考图18，四个排气区111B包括两个第一排气区111B1和两个第二排气区111B2，两个第一排气区111B1相对设置，两个第二排气区111B2相对设置，第一排气区111B1的投影面积小于第二排气区111B2的投影面积。
具体的，在上述实施方式的基础上，四个排气区111B可以分别位于注液区111A的四个方向，且两个第一排气区111B1相对设置，两个第二排气区111B2相对设置。
优选的，第一排气区111B1可以在第二方向L相对设置，第二排气区111B2可以在第一方向S上相对设置。并且，第一排气区111B1在第二方向L上的尺寸小于第二排气区111B2在第一方向S上的尺寸。即为注液孔111在第一方向S的长度大于在第二方向L上的长度。
通过将排气区111B分为两种不同的规格(第一排气区111B1和第二排气区111B2)，可以设置出长宽比不一样的注液孔111，从而有利于适配方形储能装置的排气空间。
一种实施方式中，请参考图20和图21，注液孔111还包括第四壁面1114，第四壁面1114连接第一壁面1111，第四壁面1114与第一壁面1111具有夹角，或者，第四壁面1114与第一壁面1111的夹角为180°且面型不同，其中，第四壁面1114与第一壁面1111的夹角是指在横截面中相接点的切线方向的夹角。
具体的，第四壁面1114可以在注液孔111的周向上与第一壁面1111连接。并且，第四壁面1114的面型不做具体限制。举例而言，第四壁面1114相背离的两端可以分别连接第一壁面1111和第三壁面1113。所以注液孔111可以为由一个圆孔和一个方孔相交而形成。其中排气区111B有第四壁面1114、第一壁面1111和第二壁面1112围合形成。
可选的，第一壁面1111、第二壁面1112、第三壁面1113和第四壁面1114的数量均为多个，且多个第一壁面1111、第二壁面1112、第三壁面1113和第四壁面1114呈环形阵列排布。具体的特征可参照上述实施方式，在此不做赘述。
在其他实施方式中，注液孔111的壁面还可以包括第五壁面及以上。可以理解的，本申请通过设计内周壁上的子壁面的具有连接角度，使得注液孔111的形状可以具有除圆形以外的结构，可以在满足注液需求的前提下，具有透气的功能，防止注入电解液时出现电池胀液的现象，所以内周壁上的子壁面的数量不做具体限制。
基于前述本申请实施例的顶盖11、端盖组件以及储能装置100，本申请实施例还提供一种用电设备，包括本申请实施例中的储能装置100，该储能装置100用于为用电设备供电。
在本申请实施例的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指标的方位或位置关系为基于附图所述的方位或位置关系，仅是为了便于描述本申请和简化描述，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的限制。
以上所揭露的仅为本申请一种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于本申请所涵盖的范围。

Claims (12)

  1. 一种端盖组件，用于储能装置(100)，其中，包括:
    顶盖(11)，所述顶盖(11)包括相背的外表面和内表面，所述顶盖(11)开设有注液孔(111)，所述注液孔(111)贯穿所述外表面和所述内表面；
    所述注液孔(111)包括在周向上相连的第一壁面(1111)和第二壁面(1112)，所述第一壁面(1111)与所述第二壁面(1112)具有夹角，或者，所述第一壁面(1111)与所述第二壁面(1112)的夹角为180°且面型不同，其中，所述第一壁面(1111)与所述第二壁面(1112)的夹角是指在横截面中相接点的切线方向的夹角。
  2. 根据权利要求1所述的端盖组件，其中，所述第一壁面(1111)相背离的两端均连接所述第二壁面(1112)，所述第一壁面(1111)相背离的两端分别与相连接的所述第二壁面(1112)具有第一夹角和第二夹角，所述第一夹角α1为10°≤α1≤160°，所述第二夹角α2为10°≤α2≤160°。
  3. 根据权利要求1或2所述的端盖组件，其中，所述第一壁面和所述第二壁面的数量均为多个，且多个所述第一壁面和所述第二壁面呈环形阵列排布，所述第二壁面相背离的两端分别连接相邻的两个所述第一壁面。
  4. 根据权利要求3所述的端盖组件，其中，所述第一壁面(1111)和所述第二壁面(1112)的数量均为两个，两个所述第一壁面(1111)在第一方向(S)上相对设置，两个所述第二壁面(1112)在所述第二方向(L)上相对设置，所述第一方向(S)和所述第二方向(L)相交；所述第一壁面(1111)到呈环形阵列排布的旋转中心距离大于所述第二壁面(1112)到呈环形阵列排布的旋转中心距离。
  5. 根据权利要求4所述的端盖组件，其中，所述端盖组件还包括密封件(12)，所述密封件(12)具有弹性变形能力，所述密封件(12)在所述第一方向(S)上的形变程度大于所述密封件(12)在所述第二方向(L)上的形变程度。
  6. 根据权利要求1至5任一项所述的端盖组件，其中，所述注液孔(111)还包括第三壁面(1113)，所述第三壁面(1113)连接所述第二壁面(1112)，所述第三壁面(1113)与所述第二壁面(1112)具有夹角，或者，所述第三壁面(1113)与所述第二壁面(1112)的夹角为180°且面型不同，其中，所述第三壁面(1113)与所述第二壁面(1112)的夹角是指在横截面中相接点的切线方向的夹角。
  7. 根据权利要求6所述的端盖组件，其中，所述第三壁面(1113)相背离的两端分别连接所述第二壁面(1112)和所述第一壁面(1111)，并具有第三夹角和第四夹角，所述第三夹角β1为10°≤β1≤160°，所述第四夹角β2为10°≤β2≤160°。
  8. 根据权利要求7所述的端盖组件，其中，所述第一壁面(1111)、所述第二壁面(1112)和所述第三壁面(1113)的数量均为多个，且多个所述第一壁面(1111)、所述第二壁面(1112)和所述第三壁面(1113)呈环形阵列排布。
  9. 根据权利要求8所述的端盖组件，其中，所述第一壁面(1111)、所述第二壁面(1112)和所述第三壁面(1113)之间均为平滑连接的曲面；多个所述第一壁面(1111)、多个所述第二壁面(1112)和多个所述第三壁面(1113)围合圆形的注液区(111A)以及四个排气区(111B)，所述排气区(111B)在所述注液区(111A)的外周为旋转对称排布，所述注液区(111A)用于供注液针插入。
  10. 根据权利要求9所述的端盖组件，其中，四个所述排气区(111B)包括两个第一排气区(111B1)和两个第二排气区(111B2)，两个所述第一排气区(111B1)相对设置，两个所述第二排气区(111B2)相对设置，所述第一排气区(111B1)的投影面积小于所述第二排气区(111B2)的投影面积。
  11. 一种储能装置(100)，其中，所述储能装置(100)包括电极组件、壳体以及如权利要求1至10任意一项所述的端盖组件，所述电极组件设置于所述壳体内，所述端盖组件电连接于所述电极组件。
  12. 一种用电设备，其中，所述用电设备包括如权利要求11所述的储能装置(100)，所述储能装置(100)为所述用电设备供电。
PCT/CN2024/071983 2023-03-30 2024-01-12 端盖组件、储能装置和用电设备 Ceased WO2024198637A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310331617.0 2023-03-30
CN202310331617.0A CN116154426B (zh) 2023-03-30 2023-03-30 端盖组件、储能装置和用电设备

Publications (1)

Publication Number Publication Date
WO2024198637A1 true WO2024198637A1 (zh) 2024-10-03

Family

ID=86352606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/071983 Ceased WO2024198637A1 (zh) 2023-03-30 2024-01-12 端盖组件、储能装置和用电设备

Country Status (2)

Country Link
CN (1) CN116154426B (zh)
WO (1) WO2024198637A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116154426B (zh) * 2023-03-30 2024-07-23 厦门海辰储能科技股份有限公司 端盖组件、储能装置和用电设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014099266A (ja) * 2012-11-13 2014-05-29 Toyota Industries Corp 蓄電装置、及び蓄電装置の封止方法
CN112234326A (zh) * 2020-11-20 2021-01-15 苏州凌威新能源科技有限公司 一种电池注液口结构及电池盖板
CN114204233A (zh) * 2021-11-23 2022-03-18 天津力神电池股份有限公司 采用多边形双孔注液方式的锂离子电池注液方法
CN218242206U (zh) * 2022-07-22 2023-01-06 阳光电源股份有限公司 一种盖板结构及锂电池
CN116154426A (zh) * 2023-03-30 2023-05-23 厦门海辰储能科技股份有限公司 端盖组件、储能装置和用电设备
CN116207462A (zh) * 2023-03-30 2023-06-02 厦门海辰储能科技股份有限公司 端盖组件、储能装置和用电设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5926697B2 (ja) * 2013-03-04 2016-05-25 日立オートモティブシステムズ株式会社 角形蓄電素子
KR102699032B1 (ko) * 2018-12-05 2024-08-27 에스케이온 주식회사 파우치 필름 및 이를 포함하는 이차전지
CN210805834U (zh) * 2019-11-20 2020-06-19 欣旺达电动汽车电池有限公司 一种单体电池及动力电池组
CN212161870U (zh) * 2020-05-14 2020-12-15 宁德时代新能源科技股份有限公司 端盖组件、外壳组件、二次电池、电池组、使用电池的装置及注液装置
CN214477667U (zh) * 2021-06-24 2021-10-22 比亚迪股份有限公司 电池壳及电池
CN216958250U (zh) * 2022-01-18 2022-07-12 湖北亿纬动力有限公司 一种电池盖板组件及电池
CN218274682U (zh) * 2022-06-07 2023-01-10 欣旺达惠州动力新能源有限公司 电池及电池模组
CN217334362U (zh) * 2022-06-20 2022-08-30 宁德时代新能源科技股份有限公司 端盖、端盖组件、电池单体、电池及用电装置
CN115692962A (zh) * 2022-11-02 2023-02-03 厦门海辰储能科技股份有限公司 电池的顶盖组件、电池和用电装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014099266A (ja) * 2012-11-13 2014-05-29 Toyota Industries Corp 蓄電装置、及び蓄電装置の封止方法
CN112234326A (zh) * 2020-11-20 2021-01-15 苏州凌威新能源科技有限公司 一种电池注液口结构及电池盖板
CN114204233A (zh) * 2021-11-23 2022-03-18 天津力神电池股份有限公司 采用多边形双孔注液方式的锂离子电池注液方法
CN218242206U (zh) * 2022-07-22 2023-01-06 阳光电源股份有限公司 一种盖板结构及锂电池
CN116154426A (zh) * 2023-03-30 2023-05-23 厦门海辰储能科技股份有限公司 端盖组件、储能装置和用电设备
CN116207462A (zh) * 2023-03-30 2023-06-02 厦门海辰储能科技股份有限公司 端盖组件、储能装置和用电设备

Also Published As

Publication number Publication date
CN116154426B (zh) 2024-07-23
CN116154426A (zh) 2023-05-23

Similar Documents

Publication Publication Date Title
US20250149763A1 (en) End cover assembly, energy storage device, and electric apparatus
CN116470240B (zh) 端盖组件、储能装置以及用电设备
CN116544627B (zh) 端盖单元、储能装置及用电设备
WO2024198622A1 (zh) 端盖组件、储能装置及用电设备
WO2024222078A1 (zh) 端盖组件、储能装置和用电设备
US12080866B1 (en) Energy-storage device, electricity-consumption system, and energy-storage system
WO2025200527A1 (zh) 端盖组件、储能装置及用电设备
CN116154426B (zh) 端盖组件、储能装置和用电设备
CN116581443B (zh) 储能装置及用电设备
CN116759760B (zh) 端盖组件、储能装置及储能系统
WO2024222071A1 (zh) 集流盘、端盖组件、储能装置和用电设备
CN116207462B (zh) 端盖组件、储能装置和用电设备
WO2026007809A1 (zh) 电池模组与储能系统
WO2024222217A1 (zh) 端盖组件、储能装置及户用储能系统
WO2025200644A1 (zh) 电池壳体、储能装置和用电设备
CN117497975B (zh) 端盖组件、储能装置、用电设备及注液方法
WO2024198597A1 (zh) 端盖组件、储能装置及用电设备
CN220556611U (zh) 一种端盖组件、储能装置及用电设备
WO2024244295A1 (zh) 储能装置及储能系统
WO2024250804A1 (zh) 储能装置及用电设备
WO2024222074A1 (zh) 储能装置和用电设备
WO2024222215A1 (zh) 端盖单元、储能装置及用电设备
WO2025001166A1 (zh) 储能装置、储能模组及用电设备
CN221978159U (zh) 储能装置和用电设备
US20250007136A1 (en) Energy-storage device and electricity-consumption apparatus

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: 24777432

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE