WO2024001498A1 - 一种电池 - Google Patents

一种电池 Download PDF

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Publication number
WO2024001498A1
WO2024001498A1 PCT/CN2023/091568 CN2023091568W WO2024001498A1 WO 2024001498 A1 WO2024001498 A1 WO 2024001498A1 CN 2023091568 W CN2023091568 W CN 2023091568W WO 2024001498 A1 WO2024001498 A1 WO 2024001498A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
reinforcement
side plate
flange
battery according
Prior art date
Application number
PCT/CN2023/091568
Other languages
English (en)
French (fr)
Inventor
杜帅
王永旺
曾玉祥
Original Assignee
珠海冠宇电池股份有限公司
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 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Publication of WO2024001498A1 publication Critical patent/WO2024001498A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • 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
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/134—Hardness
    • 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 technical field of electrochemical energy storage, and specifically relates to a battery.
  • Batteries are commonly used electrochemical energy storage devices, which generally include a casing, a battery core, a sealing sheet, etc.
  • a liquid injection hole on the housing. After the electrolyte is injected into the housing through the liquid injection hole, a sealing sheet is used to seal the liquid injection hole.
  • the injection pipe needs to be in close contact with the injection hole to prevent leakage.
  • the injection pipe will press hard against the shell, and the shell is usually thin, which can easily cause the injection hole to sink and cause the seal to be not strong enough. It is also easy to form cracks or cracks on the inside of the casing, but they cannot be known in time because they cannot be seen from the outside.
  • this application is committed to providing a battery that strengthens the structural strength of the liquid injection hole, reduces the deformation that easily occurs during the liquid injection process, and improves the firmness of the seal, so as to solve the problem of the structure of the liquid injection hole in the prior art. If the strength is weak, it will easily crack and leak in the later stage.
  • the present application provides a battery, which includes: a casing, which is surrounded by a casing cavity and has a first side plate with a first through hole; a reinforcement located inside the casing, It has a second through hole; a reinforcement member is located outside the housing and has a third through hole; wherein the reinforcement member, the first side plate and the reinforcement member are connected in sequence, and the third through hole passes through The first through hole and the second through hole are connected with the housing cavity.
  • the reinforcement, the reinforcement and the first side plate are integrally formed structures, or the reinforcement, the reinforcement and the first side plate are sealed and connected. and connected as an integral component.
  • the projection of the second through hole on the first side plate covers the projection of the first through hole on the first side plate, and/or the second through hole
  • the projection of a through hole on the first side plate covers the projection of the third through hole on the first side plate.
  • a sealing member is further included, the sealing member is sealingly connected to the reinforcement member, and the projection of the sealing member on the first side plate covers the location of the third through hole. The projection on the first side panel.
  • the reinforcement includes a plate body, the plate body is connected to the first side plate, the third through hole is opened on the plate body, and the first through hole Located within the edge of the projection area of the plate body on the first side plate.
  • the reinforcement includes a first reinforcement part connected to the first side plate, and the second through hole is opened in the first reinforcement part.
  • the reinforcement further includes a first flange protruding from one side of the plate body, and the third through hole penetrates the first flange in the axial direction.
  • the first flange passes through the first through hole; or, the first flange passes through the first through hole and the second through hole. within; or, the axial dimension of the first flange is not less than the sum of the axial lengths of the first through hole and the second through hole.
  • the outer side wall of the first flange is in contact with the hole wall of the first through hole; or, the first flange includes a first section and a second section, and the The outer side wall of the first section is in contact with the hole wall of the first through hole, and the outer side wall of the second section is in contact with the hole wall of the second through hole.
  • the reinforcement further includes a second flange protruding from one side of the first reinforcement part, and the second through hole penetrates the second flange in the axial direction.
  • the second flange penetrates through the first through hole; or, the second flange penetrates through the first through hole and the third through hole. within; or, the axial dimension of the second flange is not less than the sum of the axial lengths of the first through hole and the third through hole.
  • the outer side wall of the second flange is in contact with the hole wall of the first through hole; or, the second flange includes a first section and a second section, and the The outer side wall of the first section is in contact with the hole wall of the first through hole, and the outer side wall of the second section is in contact with the hole wall of the third through hole.
  • the sealing member includes a sealing plate that is attached and connected to the first side plate, and the sealing plate covers the third through hole.
  • a boss extending into the third through hole is provided on a side of the sealing plate facing the first side plate.
  • the boss is provided in the third through hole; or the boss is provided in the third through hole and the first through hole; or, the boss is provided in the third through hole and the first through hole;
  • the boss is inserted into the third through hole, the first through hole and the second through hole; or, the reinforcing member is inserted into the first through hole and the third through hole.
  • the second flange, the second through hole penetrates the second flange in the axial direction, and the boss is disposed in the second through hole.
  • the projection of the second through hole on the first side plate covers the projection of the boss on the first side plate; and/or the first through hole
  • the projection of the hole on the first side plate covers the projection of the boss on the first side plate; and/or the first through hole, the second through hole, the third through hole Both the hole and the boss are coaxially arranged.
  • the size of the boss in the axial direction of the third through hole is not smaller than that of the third through hole.
  • the axial length of the through hole is not smaller than that of the third through hole.
  • the axial cross-section of the boss is any one of cylindrical, conical, rectangular, square, semicircular, U-shaped and arcuate.
  • the reinforcement further includes a second reinforcement part connected to the first reinforcement part, and the second reinforcement part is connected to the first tab through a connector; and/or the The reinforcement further includes a third reinforcement part connected to the first reinforcement part, the housing includes a bottom plate connected to the first side plate, and the third reinforcement part is connected to the bottom plate.
  • one or more reinforcing ribs are provided between the second reinforcing part and the first reinforcing part.
  • the connecting part between the second reinforcement part and the first reinforcement part has a reinforcement area corresponding to the position of the reinforcement rib, and the reinforcement area is closer to the second reinforcement part.
  • the reinforcing rib is recessed in an angular direction with the first reinforcing part; and/or one end of the reinforcing rib is connected to the first reinforcing part and the reinforcing rib is connected to the second reinforcing part.
  • the angle between the connecting line between the connecting ends and the surface of the first reinforcing part is 30° to 60°; and/or, the end of the reinforcing rib connecting to the first reinforcing part and the The angle between the connection line between the reinforcing rib and one end of the second reinforcement part and the surface of the second reinforcement part is 30° to 60°.
  • the first tab is electrically connected to the circuit of the battery through the connector, the reinforcement, and the first side plate.
  • the first side plate is made of any one of steel, aluminum, aluminum alloy, nickel, iron or nickel-iron alloy.
  • the minimum thickness of the reinforcement in the direction from the first side plate to the reinforcement is 0.2 mm to 1 mm; and/or, the reinforcement is along the battery core.
  • the minimum thickness in the thickness direction is 0.2mm-1mm; and/or, along the direction from the first side plate to the first tab, the length of the reinforcement is 1mm-3mm.
  • the first electrode tab is a positive electrode tab or a negative electrode tab; and/or the battery core of the battery is a laminated battery core or a wound battery core.
  • a first through hole is provided on the first side plate of the casing, which can be used for liquid injection.
  • the inner and outer sides of the casing are also the two sides of the first side plate.
  • the reinforcements, the first side plate and the reinforcements are connected in sequence.
  • convex thickened areas are formed on both sides of the housing. , significantly enhancing the structural strength at the first through hole.
  • the liquid injection parts on the shell are thickened, which significantly improves the load capacity and deformation resistance of the liquid injection parts.
  • the liquid injection part is subjected to a large pressure, the area around the liquid injection hole is not prone to dents or cracks.
  • the sealing piece can better seal the third through hole, which can improve the firmness of the seal. degree. Therefore, the battery provided by this application has higher safety in use and quality assurance.
  • Figure 1 is a schematic diagram of the composition of the battery in the embodiment of the present application.
  • Figure 2 is a schematic diagram of the first side plate in the embodiment of the present application.
  • Figure 3 is a schematic diagram of the sealing member and the first side plate in the embodiment of the present application.
  • Figure 4 is a partial enlarged view of the A-A cross-sectional view in Figure 3 in the first embodiment
  • Figure 5 is a front view of the sealing member
  • Figure 6 is a side view of the sealing member
  • Figure 7 is a partial enlarged view of the A-A cross-sectional view in Figure 3 in the second embodiment
  • Figure 8 is a cross-sectional view of the reinforcement
  • Figure 9 is a partial enlarged view of the A-A cross-sectional view in Figure 3 in the third embodiment.
  • Figure 10 is a cross-sectional view of the reinforcement
  • Figure 11 is a schematic structural diagram of a reinforcement according to an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a reinforcement according to an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a reinforcement according to an embodiment of the present application.
  • Figure 14 is a schematic cross-sectional view of a reinforcement according to an embodiment of the application.
  • Figure 15 is a schematic cross-sectional view of a reinforcement according to an embodiment of the application.
  • Figure 16 is a schematic structural diagram of a reinforcement according to an embodiment of the present application.
  • 1 Shell; 11: First side plate; 12: Bottom plate; 100, first through hole; 2: Battery core; 21: First tab; 3: Reinforcement; 300: Groove; 310: Second pass hole; 311: first reinforcement part; 312: second reinforcement part; 313: third reinforcement part; 314: reinforcement area; 315: reinforcement rib; 316, second flange; 4, reinforcement; 410, third pass Hole; 411, plate body; 412, first flange; 5, sealing member; 511, sealing plate; 512, boss; 6, connector.
  • the embodiment of the present application provides a battery, which includes a casing 1, a reinforcing member 3 and a reinforcing member 4.
  • the casing 1 encloses a shell cavity for accommodating electrolyte and battery core 2.
  • the housing 1 has a first side plate 11, and a first through hole 100 is opened in the first side plate 11.
  • the first through hole 100 penetrates the first side plate 11 along the thickness direction of the first side plate 11, and can be used for injecting electrolyte. inside the shell cavity.
  • the reinforcement 3 is located inside the housing 1 and has a second through hole 310 connected with the first through hole 100.
  • the reinforcement 3 can be arranged around the circumference of the first through hole 100 to cover the periphery of the first through hole 100.
  • the area (in the circumferential direction) is also equivalent to the area where the reinforcement 3 covers the first through hole 100 and communicates with the first through hole 100 and the shell cavity through the second through hole 310 .
  • the reinforcement 4 is located outside the housing 1 and has a third through hole 410 connected with the first through hole 100.
  • the reinforcement 4 is arranged around the circumference of the first through hole 100, that is, covering the area around the first through hole 100. It is also equivalent to the reinforcing member 4 covering the area where the first through hole 100 is located, and at the same time, the first through hole 100 and the space outside the shell are connected through the third through hole 410 .
  • the reinforcement 3, the first side plate 11 and the reinforcement 4 are connected in sequence.
  • this sentence may refer to three independent components being connected in sequence, or it may refer to the relative connection of three different parts of an integral component.
  • the reinforcement 3, the first side plate 11 and the reinforcement 4 are integrally formed.
  • the space outside the shell is connected to the shell cavity through the third through hole 410, the first through hole 100, and the second through hole 310, and the third through hole 410, the first through hole 100, and the second through hole 310 form a passage.
  • the reinforcement 4 and the reinforcement 3 are respectively connected to the first side plate 11 on both inner and outer sides of the housing 1 and both cover the area where the first through hole 100 is located, and the first The through hole 100 extends through the reinforcing member 4 and the reinforcing member 3 .
  • the hole segment on the reinforcing member 4 forms a third through hole 410
  • the hole segment on the reinforcing member 3 forms a second through hole 310 .
  • the liquid injection pipe When injecting liquid, the liquid injection pipe is pressed against the reinforcement 4, and the liquid flows through the third through hole 410 on the reinforcement 4, the first through hole 100 on the first side plate 11 and the second through hole 100 on the reinforcement 3 in sequence.
  • the through hole 310 enters the housing cavity.
  • the reinforcement 3 supports the area (peripheral area) surrounding the first side plate 11 in the circumferential direction of the first through hole 100
  • the reinforcement 4 supports the area surrounding the first side plate 11 in the circumferential direction of the first through hole 100.
  • thickened areas are formed on both sides of the first side plate 11, that is, the thickness of the area where the liquid injection hole is located is increased, which significantly improves the structural strength of the area where the first through hole 100 is located.
  • the load capacity and deformation resistance of this area are improved to prevent deformation such as dents when this area is used as an injection site for liquid injection and is subjected to greater pressure, and is less prone to cracks and cracks.
  • the sealing member 5 and the reinforcing member 4 can fit better and have a larger contact area.
  • the reinforcing member 3 and the reinforcing member 4 both structurally strengthen the liquid injection part.
  • the sealing member and the reinforcing member 4 Greater operating force can also be applied during connection such as welding, which not only facilitates the connection operation, but also seals the third through hole 410 more tightly and firmly, thereby improving the stability of the connection and the reliability of the seal.
  • the battery provided by the present application has higher sealing performance, safety in use and quality assurance compared with batteries in the prior art that are not provided with reinforcements 4 and/or reinforcements 3 .
  • the reinforcing member 4, the reinforcing member 3 and the first side plate 11 are formed into an integral structure, or the three are connected into an integrated component (which means that the connection is a non-detachable connection, and after the connection, a An integral component with sealed joints). Then, there is no connection or leakage gap between the thickened areas on the inner and outer sides of the first side plate 11 and the first side plate, and there is no particularly weak point in the structure, further improving the first through hole.
  • the structural strength of the area where 100 is located further improves the load capacity and deformation resistance of this area. When this area is used as a liquid injection site and bears greater pressure, it is less prone to cracking.
  • the reinforcing member 3, the reinforcing member 4 and the first side plate 11 can be integrally formed by machining, such as milling, etc. on a single piece of material.
  • the reinforcement 3, the reinforcement 4 and the first side plate 11 can also be welded into an integrated component. Then, the connection between the three has high structural strength and high deformation resistance, and can load the fluid injected during the liquid injection process. The resistance force of the liquid pipe to the liquid injection site.
  • the projection of the first through hole 100 on the first side plate 11 and the projection of the second through hole 310 on the first side plate 11 may overlap partially or completely.
  • the projection of the second through hole 310 on the first side plate 11 covers the projection of the first through hole 100 on the first side plate 11 . That is to say, the diameter of the second through hole 310 is not smaller than the diameter of the first through hole 100
  • the projection of the third through hole 410 on the first side plate 11 is the same as the projection of the first through hole 100 on the first side plate 11 Can overlap partially, or completely.
  • the projection of the first through hole 100 on the first side plate 11 covers the projection of the third through hole 410 on the first side plate 11 . That is to say, the diameter of the first through hole 100 is not smaller than the diameter of the third through hole 410 .
  • the first through hole 100, the second through hole 310 and the third through hole 410 may be coaxially disposed. Or, the concentricity is not greater than 1.5mm.
  • the battery also includes a sealing member 5, which is sealingly connected to the reinforcement member 4.
  • the projection of the sealing member 5 on the first side plate 11 covers the projection of the third through hole 410 on the first side plate 11, thereby protecting the third through hole 410.
  • the through hole 410 is effectively sealed.
  • the sealing member 5 and the reinforcing member 4 can be welded, and due to the presence of the reinforcing member 3, it is easier to apply force when welding the sealing member 5 and the welding can be stronger.
  • the reinforcing member 4 includes a plate body 411.
  • the plate body 411 is connected to the first side plate 11.
  • a third through hole 410 is opened on the plate body 411.
  • the first through hole 100 is located within the edge of the projection area of the plate body 411 on the first side plate 11 , that is, the plate body 411 is arranged around the first through hole 100 and covers the area around the first through hole 100 , so that the plate body 411 can The circumferential direction of the first through hole 100 is effectively sealed.
  • the reinforcement 3 includes a first reinforcement part 311, which is connected to the first side plate 11.
  • a second through hole 310 is opened in the first reinforcement part 311, along the thickness direction of the first reinforcement part 311, that is, the first through hole 310.
  • the direction from the side plate 11 to the reinforcement 3 is penetrating.
  • the first through hole 100 is located within the edge of the projection area of the first reinforcement part 311 on the first side plate 11 , that is, the first reinforcement part 311 surrounds the first through hole 100 and covers the area around the first through hole 100 , so that the first through hole 100 is surrounded by the first reinforcement part 311 .
  • a reinforcement part 311 can effectively seal the circumferential direction of the first through hole 100. Even if this part is pressed by external force during liquid injection, it will not crack, effectively preventing the electrolyte from infiltrating between the first side plate 11 and the reinforcement 3. Occasionally, the reinforcement 3 may easily fall off during use.
  • the sealing member 5 includes a sealing plate 511 connected to the first side plate 11 , the sealing plate 511 covers the third through hole 410 , and the sealing plate 511 is sealingly connected to the first side plate 11 .
  • the sealing plate 511 and the first side plate 11 may be welded.
  • the first reinforcement part 311, the first side plate 11, the plate body 411 and the sealing plate 511 are arranged in sequence along the thickness direction of the first side plate 11, and can be welded to each other to form an integrated component, so that the battery has Extremely high sealing and quality assurance.
  • the sealing member 5 in addition to the sealing plate 511, is also provided with a boss 512.
  • the boss 512 protrudes from at least one side of the sealing plate 511 and is used to insert the third through hole 410.
  • the third through hole 410 The projection in the radial direction at least partially overlaps with the projection of the boss 512 in the radial direction, and the projection of the third through hole 410 on the first side plate 11 covers the projection of the boss 512 on the first side plate 11 .
  • the sealing member 5 can be positioned quickly and accurately, and it can also ensure that the sealing plate 511 fully covers and seals the area around the third through hole 410 to prevent connections due to misalignment.
  • the strength is uneven, and there are connection parts with different thicknesses or seriously different strengths in the circumferential direction of the third through hole 410, which easily shortens the service life of the battery.
  • the hole wall of the third through hole 410 and the outer wall of the boss 512 may be in contact with each other, or may have a gap.
  • the projection of the first through hole 100 on the first side plate 11 and the projection of the boss 512 on the first side plate 11 at least partially overlap. Specifically, they may overlap partially or completely. When all are overlapped, the projection of the first through hole 100 on the first side plate 11 covers the projection of the boss 512 on the first side plate 11 .
  • the projection of the second through hole 310 on the first side plate 11 and the projection of the boss 512 on the first side plate 11 at least partially overlap. Specifically, they may overlap partially or completely. When all are overlapped, the projection of the second through hole 310 on the first side plate 11 covers the projection of the boss 512 on the first side plate 11 .
  • first through hole 100 , the second through hole 310 , the third through hole 410 and the boss 512 are all coaxially arranged.
  • the boss 512 can only be inserted into the third through hole 410 , and the size of the boss 512 in the axial direction of the third through hole 410 is no greater than the axial length of the third through hole 410 .
  • the outer side wall of the boss 512 and the hole wall of the third through hole 410 may be in contact or have a distance.
  • the boss 512 is inserted into the third through hole 410 and the first through hole 100, and the axial size of the boss 512 in the third through hole 410 is not less than the axial length of the third through hole 410, but not greater than the axial length of the third through hole 410.
  • the outer side wall of the boss 512 may be in contact with or have a distance from the hole wall of the third through hole 410 , and may be in contact with or have a distance from the hole wall of the first through hole 100 .
  • the boss 512 is inserted into the third through hole 410, the first through hole 100 and the second through hole 310, and the size of the boss 512 in the axial direction of the third through hole 410 is not smaller than that of the third through hole 410 and the first through hole 410.
  • the outer wall of the boss 512 may be in contact with or have a distance from the hole wall of the third through hole 410, may be in contact with or may have a distance from the hole wall of the first through hole 100, and may be in contact with the hole wall of the second through hole 100.
  • the walls of the holes 310 may be in contact or have spacing.
  • the axial cross section of the boss 512 is any one of cylindrical, conical, rectangular, square, semicircular, U-shaped and arcuate.
  • a flange is provided on one of the reinforcing member 4 and the reinforcing member 3 , and the flange can at least be inserted into the first through hole 100 .
  • Such arrangement can not only facilitate the positioning and docking between the reinforcement 4 and the first side plate 11 , or the reinforcement 3 and the first side plate 11 , or the three, but also guide the injection of electrolyte.
  • the flange is provided on the reinforcement 4.
  • the reinforcement 4 includes a first flange 412 protruding from one side of the plate body 411, and a third through hole 410 along the axis. to penetrate the first flange 412 . That is, the first flange 412 is cylindrical, and the cylindrical hole is formed by extending the third through hole 410 .
  • the first flange 412 can be disposed in the first through hole 100 , and the axial length is no greater than the axial length of the first through hole 100 . In this way, the reinforcement 3 and the first side plate 11 are easily positioned and connected, and the first through hole 100 and the third through hole 410 are prevented from being misaligned.
  • the first flange 412 includes a first section and a second section, the first section is inserted into the first through hole 100 , and the second section is inserted into the second through hole 310 , that is, the first flange 412 is inserted into the first through hole 100 .
  • the axial length of the first flange 412 may be greater than the axial length of the first through hole 100, but shorter than the first through hole 100 and the second through hole 310. The sum of the axial lengths.
  • the reinforcing member 4, the first side plate 11 and the reinforcing member 3 can be easily positioned and connected to each other to ensure that the first through hole 100, the second through hole 310 and the third through hole 410 are relatively aligned, thereby avoiding misalignment and affecting liquid injection. speed.
  • the first flange 412 includes a first section and a second section, the first section is inserted into the first through hole 100 , the second section is inserted into the second through hole 310 , and the first flange 412 is inserted into the first through hole 100 .
  • the axial length of the first flange 412 is not less than the sum of the axial lengths of the first through hole 100 and the second through hole 310, specifically including the length of the first through hole 412 and the second through hole 310.
  • the end surface of 310 at one end away from the first through hole 100 is flush with the end surface, or exceeds the end surface at the second end away from the first through hole 100 .
  • the reinforcement 4, the first side plate 11 and the reinforcement 3 can be positioned and docked accurately, and can This is to ensure that the first through hole 100, the second through hole 310 and the third through hole 410 are relatively aligned to avoid misalignment and affecting the liquid injection speed.
  • the outer diameter of the first flange 412 may match the inner diameter of the first through hole 100 , that is, the outer wall of the first flange 412 matches the inner diameter of the first through hole 100 .
  • the hole walls (hole walls) of a through hole 100 are in contact.
  • the outer diameter of the first flange 412 is an interference fit with the inner diameter of the first through hole 100.
  • the first flange 412 When the first flange 412 is inserted into the first through hole 100 and the second through hole 310 , the first flange 412 includes a first section and a second section.
  • the outer wall of the first section and the hole of the first through hole 100 The walls (hole walls) may be in contact, and the outer side wall of the second section and the hole wall (hole wall) of the second through hole 310 may be in contact.
  • the inner diameter of the first section matches the inner diameter of the first through hole 100 , which is an interference fit
  • the outer diameter of the second section matches the inner diameter of the second through hole 310 , which is an interference fit.
  • the outer side wall of the first flange 412 and the walls of the first through hole 100 and the second through hole 310 can form a sealing effect through size matching.
  • the electrolyte will basically not enter the first through hole 100 and the second through hole 310 . between the flange 412 and the first through hole 100 and the second through hole 310 .
  • the boss 512 is embedded in the third through hole 410. Since the positioning between the reinforcement 4, the first side plate 11 and the reinforcement 3 has been achieved through the first flange 412, the size of the boss 512 in the axial direction of the third through hole 410 can be smaller than that of the third through hole 410. axial length.
  • the size of the boss 512 in the axial direction of the third through hole 410 may also be equal to or greater than the axial length of the third through hole 410 .
  • the outer side wall of the boss 512 and the hole wall of the third through hole 410 may be in contact or have a distance.
  • the flange is provided on the reinforcement 3.
  • the reinforcement 3 includes a second flange 316 protruding from one side of the first reinforcement 311, and a second through hole. 310 axially penetrates the second flange 316 . That is, the first flange 412 is cylindrical, and the cylindrical hole is formed by extending the third through hole 410 .
  • the second flange 316 can be disposed in the first through hole 100, and the axial length is not greater than the axial length of the first through hole 100. In this way, the reinforcement 3 and the first side plate 11 can be easily positioned and connected to avoid the first through hole 100.
  • the hole 100 is offset from the second through hole 310 .
  • the second flange 316 includes a first section and a second section, the first section is inserted into the first through hole 100 , and the second section is inserted into the third through hole 410 , that is, the second flange 316 is inserted into the first through hole 100 .
  • the axial length of the second flange 316 can be greater than the axial length of the first through hole 100, but smaller than the first through hole 100 and the third through hole. The sum of the axial lengths of 410.
  • the reinforcement 3 can be easily positioned and connected with the first side plate 11 and the reinforcement 4 to ensure that the first through hole 100 , the second through hole 310 and the third through hole 410 are relatively aligned, thereby avoiding misalignment and affecting liquid injection. speed.
  • the second flange 316 includes a first section and a second section, the first section is penetrated in the first through hole 100 , the second section is penetrated in the third through hole 410 , and the second flange 316 is penetrated in the first through hole 100 .
  • the axial length of the second flange 316 is not less than the sum of the axial lengths of the first through hole 100 and the third through hole 410, specifically including the length of the second flange 316 and the third through hole 410.
  • the end surface of 410 that is far away from the first through hole 100 is flush with the end surface, or exceeds the end surface of the second end that is far away from the first through hole 100 .
  • the reinforcement 3 can be easily positioned and connected with the first side plate 11 and the reinforcement 4 to ensure that the first through hole 100 , the second through hole 310 and the third through hole 410 are relatively aligned, thereby avoiding misalignment and affecting liquid injection. speed.
  • the outer wall of the second flange 316 may be in contact with the hole wall of the first through hole 100 , and the outer diameter of the second flange 316 may be in contact with the hole wall of the first through hole 100 .
  • the inner diameter of a through hole 100 matches, for example, the outer diameter of the second flange 316 is an interference fit with the inner diameter of the first through hole 100. In this arrangement, the second flange 316 and the first through hole 100 form a seal through size matching.
  • the electrolyte When injecting electrolyte, the electrolyte will basically not enter between the second flange 316 and the first through hole 100, effectively preventing electrolyte from accumulating between the second flange 316 and the first through hole 100 and affecting later use. .
  • the second flange 316 When the second flange 316 penetrates the first through hole 100 and the third through hole 410, the second flange 316 includes a first section and a second section, which can be the outer wall of the first section and the first through hole. 100 is in contact with the hole wall, and the outer wall of the second section is in contact with the hole wall of the third through hole 410.
  • the inner diameter of the first section matches the inner diameter of the first through hole 100, which is an interference fit.
  • the outer diameter matches the inner diameter of the third through hole 410 , which is an interference fit.
  • the electrolyte When the electrolyte is injected, the electrolyte will basically not enter the second flange 316 and the first through hole. 100 and the third through hole 410, effectively preventing electrolyte from accumulating between the second flange 316 and the through hole, which may affect later use.
  • the reinforcement 3 is provided with a second flange 316, and one end of the second flange 316 close to the sealing member 5 is inserted into the third through hole 410, according to the second protrusion
  • the boss 512 may be inserted into the third through hole 410 or the second through hole 310 .
  • the boss 512 is inserted into the second through hole 310 .
  • the hole wall of the second through hole 310 is in contact with or has a distance from the outer side wall of the boss 512 . Since the positioning between the reinforcement 4, the first side plate 11 and the reinforcement 3 has been achieved through the second flange 316, the size of the boss 512 in the axial direction of the second through hole 310 can be smaller than the second through hole. axial length of 310.
  • the size of the boss 512 in the axial direction of the second through hole 310 may also be equal to or greater than the axial length of the second through hole 310 .
  • the reinforcement 3, the first side plate 11, the reinforcement 4 and the sealing member 5 are arranged and connected in order.
  • the reinforcement 3, the first side plate 11 and the reinforcement 4 can be an integrally formed structure or
  • the sealing member 5 is connected to the reinforcing member 4 through sealing connection, such as welding, or it can form an integrated member with the three members.
  • the first side plate 11 is a side plate of the housing 1 and is in the shape of a plate.
  • the reinforcement 3 includes a first reinforcement portion 311 connected to the first side plate 11 .
  • the reinforcement 4 includes a first reinforcement portion 311 connected to the first side plate 11 .
  • the plate body 411 and the sealing member 5 include a sealing plate 511 connected to the plate body 411.
  • the first reinforcing part 311, the plate body 411 and the sealing plate 511 can all be in the shape of plates. Furthermore, the sealing member 5 is provided with a boss 512 for positioning with the reinforcing member 4 . Furthermore, a flange can be used to position the reinforcement 3 , the first side plate 11 and the reinforcement 4 , and the flange can be provided on the reinforcement 3 or the reinforcement 4 .
  • the sealing member 5 includes a sealing plate 511 and a boss 512 .
  • the boss 512 can be formed by a solid block protruding from one side of the sealing plate 511 , or by a groove recessed in the sealing plate 511 .
  • the reinforcement 3 is provided with a groove 300 on the side away from the first side plate 11 , and the cavity of the groove 300 , the second through hole 310 and the shell cavity are connected.
  • the groove 300 has a guiding effect on the flow of the electrolyte.
  • the groove 300 is preferably a through groove.
  • the battery core 2 has a first tab 21 and a second tab. Both pole lugs need to be electrically connected to the battery circuit outside the housing 1.
  • the reinforcement 3 further includes a second reinforcement part 312 connected to the first reinforcement part 311 , and the second reinforcement part 312 is connected to the first tab 21 of the battery core 2 .
  • the reinforcement 3 also plays a role in connecting the first tab 21 and the housing 1 .
  • the reinforcement 3 can be connected to the first tab 21 through the connector 6, and the first tab 21 is electrically connected to the circuit of the battery through the connector 6, the reinforcement 3, and the first side plate 11 to realize the battery core 2 A circuit arrangement in which one pole lug is electrically connected to the circuit outside the shell.
  • the reinforcement 3 integrates the two functions of achieving the strength of the liquid injection site and connecting the housing 1 and the first tab 21 into one body, and one component performs two functions.
  • the first reinforcement part 311 and the second reinforcement part 312 may surround the above-mentioned groove 300, and the groove 300 may be L-shaped or L-like.
  • the reinforcement 3 includes a third reinforcement part 313 connected to the first reinforcement part 311
  • the housing 1 includes a bottom plate 12 connected to the first side plate 11
  • the third reinforcement part 313 is connected to the bottom plate 12 .
  • This setting enhances the The supporting function of the first reinforcing part 311 further enhances the structural strength of the liquid injection part.
  • the first reinforcement part 311 and the third reinforcement part 313 may surround the above-mentioned groove 300, and the groove 300 may be L-shaped or L-like.
  • the reinforcement 3 includes a second reinforcement part 312 and a third reinforcement part 313 connected to the first reinforcement part 311.
  • the second reinforcement part 312 and the third reinforcement part 313 are oppositely arranged and located on the first reinforcement part 311. opposite sides of.
  • the first reinforcement part 311, the second reinforcement part 312 and the third reinforcement part 313 surround the above-mentioned groove 300.
  • the second through hole 310 is opened on the bottom wall of the groove 300 , that is, the first reinforcement part 311 forms the bottom wall of the groove 300 .
  • the notch of the groove 300 faces the shell cavity.
  • the groove cavity extends along the length direction of the first side plate 11. Both ends can be open to form a through groove.
  • the axial direction of the groove 300 can be perpendicular to the axial direction of the second through hole 310.
  • the cross section of the groove 300 may be U-shaped, semicircular, or arc-shaped, or both side walls of the groove 300 may be perpendicular to the bottom wall.
  • the minimum thickness of the reinforcement 3 in the direction from the first side plate 11 to the reinforcement 3 is 0.2 mm to 1 mm, such as 0.2 mm, 0.5 mm, 0.8 mm, 1 mm, etc.;
  • the minimum thickness of the reinforcement 3 along the thickness direction of the housing 1 is 0.2 mm to 1 mm, such as 0.2 mm, 0.5 mm, 0.8 mm, 1 mm, etc.
  • the length of the reinforcement 3 along the direction from the first side plate 11 to the first tab 21 is 1mm-3mm, such as 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm. , 2.8mm, 3mm, etc.
  • the reinforcement 3 can be integrally formed, for example, formed by bending a sheet metal piece, or formed by metal powder metallurgy.
  • an included angle is formed between the first reinforced part 311 and the second reinforced part 312 , and the included angle is, for example, not greater than 90° (that is, the angle between the two surfaces or planes is not greater than 90°. (included angle), one or more reinforcing ribs 315 are provided between the second reinforcing part 312 and the first reinforcing part 311. Specifically, the reinforcing rib 315 is located in the groove 300, specifically at the angle between the first reinforcing part 311 and the second reinforcing part 312. One end of the reinforcing rib 315 is connected to the first reinforcing part 311, and the other end is connected to the second reinforcing part 312. Thereby, the first reinforcement part 311 and the second reinforcement part 312 are supported, the structural stability of the reinforcement 31 is improved, and deformation and other phenomena are avoided during welding and other processes of the second reinforcement part 312.
  • the connecting portion between the second reinforcement part 312 and the first reinforcement part 311 has a reinforcement area 314 corresponding to the position of the reinforcement rib 315 .
  • the reinforcement area 314 is close to the second reinforcement part 312 and the first reinforcement part 314 .
  • the angular direction of the portion 311 (the direction facing the groove 300) is recessed and a reinforcing rib 315 is formed, that is, in the reinforcing area 314, the outside of the connecting portion of the second reinforcing portion 312 and the first reinforcing portion 311 (away from the groove 300
  • One side (the side facing the first side plate 11) is recessed to form a fourth groove.
  • the fourth groove has two opposite side walls and a bottom wall (ie, reinforcing rib 315) located between the two side walls.
  • One side wall is connected to the first reinforcement part 311 and extends toward the bottom wall from the side connected to the first reinforcement part 311 , and the other side wall is connected to the second reinforcement part 312 and connected to the second reinforcement part 312 from there.
  • the lateral bottom wall extends, and the cross-sectional shape of the fourth groove side wall is, for example, a triangle.
  • the reinforcing ribs 315 may be formed by punching from the reinforcing area, that is, punching from the outside of the connecting part of the second reinforcing part 312 and the first reinforcing part 311 to make it move toward the first reinforcing part 311 and the second reinforcing part.
  • the included angle direction of 312 is recessed to form a reinforcing rib 315 .
  • connection line between the end of the reinforcing rib 315 and the first reinforcing part 311 and the end of the reinforcing rib 315 and the second reinforcing part 312 are connected to the surface of the first reinforcing part 311 (
  • the included angle (included angle ⁇ 1) between the first reinforcing part and the side connecting the reinforcing rib 315 is 30° to 60°, such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.
  • the included angle is 30-60°, such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.
  • the side of the reinforcing rib 315 located in the groove 300 is a slope (one end of which is connected to the first reinforcement part 311 and the other end is connected to the second reinforcement part 312), then the slope and the first reinforcement part 311 are connected with the reinforcement.
  • the included angle between the connecting surface of the ribs 315 is 30°-60°, and the included angle between the inclined surface and the connecting surface of the second reinforcing part 312 and the reinforcing rib 315 is 30°-60°.
  • the length direction of the housing 1 is also the length direction of the battery core 2
  • the width direction of the housing 1 is also the width direction of the battery core 2
  • the thickness direction of the housing 1 is also the thickness direction of the battery core 2.
  • the first pole tab 21 may be a positive pole tab or a negative pole tab, that is, one of the first pole tab 21 and the second pole tab is a positive pole tab, and the other is a negative pole tab.
  • the first pole tab 21 is a negative pole tab.
  • the casing 1 can be specifically a metal packaging shell, that is, it can be made of metal, that is, the first side plate 11, the second side plate, the third side plate, the fourth side plate, the bottom plate 12, and the top cover can all be made of metal. , such as steel, aluminum, aluminum alloy, nickel, iron or nickel-iron alloy, etc.
  • the housing 1 when the housing 1 is electrically connected to the positive terminal, the housing 1 can be made of the same polarity material as the positive terminal, such as aluminum or aluminum alloy respectively.
  • the specific materials of the two can be the same or different (the two materials can be the same or different).
  • the materials are different, for example, the material of the positive electrode lug is aluminum, and the material of the housing 1 is aluminum alloy); when the housing 1 and the negative electrode lug are electrically connected, the housing 1 and the negative electrode lug are made of the same polarity, such as steel respectively.
  • nickel, iron or nickel-iron alloy the specific material types of the two can be the same or different.
  • the cell 2 of the battery is a laminated cell or a wound cell.
  • the battery core 2 includes a plurality of stacked electrode sheets, and the electrode sheets are stacked along the thickness direction of the battery core 2 .
  • each component can be disassembled and/or reassembled.
  • These decompositions and/or recombinations shall be considered equivalent versions of this application.

Landscapes

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

Abstract

本申请提供了一种电池，包括有:壳体，围成有壳腔，具有第一侧板，第一侧板上开设有第一通孔；加固件，位于壳体内部，具有第二通孔；加强件，位于壳体外部，具有第三通孔；其中，加固件、第一侧板及加强件依次连接，且第三通孔通过第一通孔及第二通孔与壳腔连通。本申请提供的电池，加强了注液孔处的结构强度，消减注液过程易发生的形变并能够提高封口的牢固程度，具有更高的使用安全性和质量保障性。

Description

一种电池 技术领域
本申请涉及电化学储能技术领域，具体涉及一种电池。
背景技术
电池是常用的电化学储能装置，其一般包括壳体、电芯、封口片等组成。壳体上开有注液孔，电解液通过注液孔注入壳体内后，使用封口片密封注液孔。但由于注液时，注液管需要与注液孔紧密接触，以防止泄露，注液管会强力压抵壳体，而壳体通常较薄，容易使注液孔下陷而导致封口不够牢固，也容易在壳体内侧形成裂纹或裂缝，却因从外部无法看到而无法及时得知，这些薄弱之处影响电池的使用质量，也容易在电池的使用过程中开裂，导致电解液外漏，使电池报废。
发明内容
有鉴于此，本申请致力于提供一种电池，加强了注液孔处的结构强度，消减注液过程易发生的形变并能够提高封口的牢固程度，以解决现有技术中注液孔处结构强度薄弱后期容易开裂漏液的问题。
本申请提供了一种电池，包括有:壳体，围成有壳腔，具有第一侧板，所述第一侧板上开设有第一通孔；加固件，位于所述壳体内部，具有第二通孔；加强件，位于所述壳体外部，具有第三通孔；其中，所述加强件、所述第一侧板及所述加强件依次连接，所述第三通孔通过所述第一通孔及所述第二通孔与所述壳腔连通。
在一种可能的实施方式中，所述加固件、所述加强件与所述第一侧板为一体成型结构，或，所述加固件、所述加强件与所述第一侧板密封连接并连接为一体式构件。
在一种可能的实施方式中，所述第二通孔在所述第一侧板上的投影覆盖所述第一通孔在所述第一侧板上的投影，和/或，所述第一通孔在所述第一侧板上的投影覆盖所述第三通孔在所述第一侧板上的投影。
在一种可能的实施方式中，还包括有封口件，所述封口件与所述加强件密封连接，所述封口件在所述第一侧板上的投影覆盖所述第三通孔在所述第一侧板上的投影。
在一种可能的实施方式中，所述加强件包括板体，所述板体与所述第一侧板连接，所述第三通孔开设在所述板体上，所述第一通孔处于所述板体在所述第一侧板上的投影区域的边缘内。
在一种可能的实施方式中，所述加固件包括第一加固部，所述第一加固部与所述第一侧板连接，所述第二通孔开设在所述第一加固部上。
在一种可能的实施方式中，所述加强件还包括凸出于所述板体一侧的第一凸缘，所述第三通孔沿轴向贯穿所述第一凸缘。
在一种可能的实施方式中，所述第一凸缘穿设于所述第一通孔内；或，所述第一凸缘穿设于所述第一通孔及所述第二通孔内；或，所述第一凸缘的轴向尺寸不小于所述第一通孔及所述第二通孔的轴向长度之和。
在一种可能的实施方式中，所述第一凸缘的外侧壁与所述第一通孔的孔壁相接触；或，所述第一凸缘包括第一段和第二段，所述第一段的外侧壁与所述第一通孔的孔壁相接触，所述第二段的外侧壁与所述第二通孔的孔壁相接触。
在一种可能的实施方式中，所述加固件还包括凸出于所述第一加固部一侧的第二凸缘，所述第二通孔沿轴向贯穿所述第二凸缘。
在一种可能的实施方式中，所述第二凸缘穿设于所述第一通孔内；或，所述第二凸缘穿设于所述第一通孔及所述第三通孔内；或，所述第二凸缘的轴向尺寸不小于所述第一通孔及所述第三通孔的轴向长度之和。
在一种可能的实施方式中，所述第二凸缘的外侧壁与所述第一通孔的孔壁相接触；或，所述第二凸缘包括第一段和第二段，所述第一段的外侧壁与所述第一通孔的孔壁相接触，所述第二段的外侧壁与所述第三通孔的孔壁相接触。
在一种可能的实施方式中，所述封口件包括与所述第一侧板贴合相连的封板，所述封板覆盖所述第三通孔。
在一种可能的实施方式中，所述封板的朝向所述第一侧板的一侧设有伸入至所述第三通孔内的凸台。
在一种可能的实施方式中，所述凸台穿设于所述第三通孔内；或所述凸台穿设于所述第三通孔及所述第一通孔内；或，所述凸台穿设于所述第三通孔、所述第一通孔及所述第二通孔内；或，所述加固件包括插入所述第一通孔及所述第三通孔内的第二凸缘，所述第二通孔沿轴向贯穿所述第二凸缘，所述凸台穿设于所述第二通孔内。
在一种可能的实施方式中，所述第二通孔在所述第一侧板上的投影覆盖所述凸台在所述第一侧板上的投影；和/或，所述第一通孔在所述第一侧板上的投影覆盖所述凸台在所述第一侧板上的投影；和/或，所述第一通孔、所述第二通孔、所述第三通孔及所述凸台均同轴设置。
在一种可能的实施方式中，所述凸台在所述第三通孔轴向上的尺寸不小于所述第三 通孔的轴向长度。
在一种可能的实施方式中，所述凸台的轴向截面为圆柱形、锥形、矩形、方形、半圆形、U形及弓形，中的任意一种。
在一种可能的实施方式中，所述加固件还包括与所述第一加固部相连的第二加固部，所述第二加固部通过连接件与第一极耳连接；和/或，所述加固件还包括与所述第一加固部相连的第三加固部，所述壳体包括与所述第一侧板相连的底板，所述第三加固部与所述底板相连。
在一种可能的实施方式中，所述第二加固部与所述第一加固部之间设有一个或多个加强筋。
在一种可能的实施方式中，所述第二加固部与所述第一加固部的相接部位具有与所述加强筋位置对应的加强区，所述加强区向靠近所述第二加固部与所述第一加固部的夹角方向凹陷并形成所述加强筋；和/或，所述加强筋与所述第一加固部相接的一端和所述加强筋与所述第二加固部相接的一端之间的连线与所述第一加固部的表面的夹角为30°～60°；和/或，所述加强筋与所述第一加固部相接的一端和所述加强筋与所述第二加固部相接的一端之间的连线与所述第二加固部的表面的夹角为30°～60°。
在一种可能的实施方式中，所述第一极耳通过所述连接件、所述加固件、及所述第一侧板与所述电池的线路电连接。
在一种可能的实施方式中，所述第一侧板的材质为钢、铝、铝合金、镍、铁或镍铁合金中的任意一种。
在一种可能的实施方式中，所述加固件在沿所述第一侧板至所述加固件的方向上的最小厚度为0.2mm～1mm；和/或，所述加固件在沿电芯的厚度方向上的最小厚度为0.2mm～1mm；和/或，沿所述第一侧板至所述第一极耳的方向，所述加固件的长度为1mm-3mm。
在一种可能的实施方式中，所述第一极耳为正极耳或负极耳；和/或，所述电池的电芯为叠片式电芯或卷绕式电芯。
根据本申请提供的电池，壳体的第一侧板上设有第一通孔，可用于注液，而在第一通孔处，在壳体内外两侧也是第一侧板的两侧分别具有覆盖在第一通孔上的加固件和加强件，加固件、第一侧板及加强件依次连接，则，在注液部位，壳体内外两侧都形成了外凸的增厚的区域，显著增强了第一通孔处的结构强度。注液时，注液管压抵在加强件上，液体流经加强件上的第三通孔、第一侧板上的第一通孔和加固件上的第二通孔进入壳腔内。壳体上的注液部位处增厚，显著提升了注液部位处的负载能力和抗形变能力， 该注液部位承受较大压力时，注液孔周边区域也不易于产生凹陷或者开缝开裂的情况，在注液完毕后，封口片能够更好的封闭第三通孔，能够提高封口的牢固程度。从而本申请提供的电池，具有更高的使用安全性和质量保障性。
附图说明
图1为本申请实施例中电池的组成示意图；
图2为本申请实施例中第一侧板的示意图；
图3为本申请实施例中封口件与第一侧板的示意图；
图4为第一种实施例中图3内A-A剖视图的局部放大图；
图5为封口件的正视图；
图6为封口件的侧视图；
图7为第二种实施例中图3内A-A剖视图的局部放大图；
图8为加强件的剖视图；
图9为第三种实施例中图3内A-A剖视图的局部放大图；
图10为加固件的剖视图；
图11为本申请一实施例的加固件的结构示意图；
图12为本申请一实施例的加固件的结构示意图；
图13为本申请一实施例的加固件的结构示意图；
图14为申请一实施例的加固件的截面示意图；
图15为申请一实施例的加固件的截面示意图；
图16为本申请一实施例的加固件的结构示意图；
图1-图16中：
1：壳体；11：第一侧板；12：底板；100、第一通孔；2：电芯；21：第一极耳；3：加固件；300：凹槽；310：第二通孔；311：第一加固部；312：第二加固部；313：第三加固部；314：加强区；315：加强筋；316、第二凸缘；4、加强件；410、第三通孔；411、板体；412、第一凸缘；5、封口件；511、封板；512、凸台；6、连接件。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于 本申请中的实施例，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例，都属于本申请保护的范围。
请参考附图1-16，本申请的实施例提供了一种电池，包括有壳体1、加固件3及加强件4，壳体1围成有容纳电解液和电芯2的壳腔，壳体1具有第一侧板11，第一侧板11上开设有第一通孔100，第一通孔100沿第一侧板11的厚度方向贯穿第一侧板11，可供电解液注入壳腔内。而加固件3位于壳体1内部，开设有与第一通孔100相连通的第二通孔310，加固件3可沿第一通孔100的周向环绕设置即覆盖第一通孔100周边(周向上)的区域，也相当于加固件3覆盖第一通孔100所在的区域同时通过第二通孔310连通第一通孔100与壳腔。加强件4位于壳体1外部，具有与第一通孔100相连通的第三通孔410，加强件4沿第一通孔100的周向环绕设置即覆盖第一通孔100周边的区域，也相当于加强件4覆盖第一通孔100所在的区域，同时，通过第三通孔410连通第一通孔100与壳外空间。加固件3、第一侧板11及加强件4依次连接，需要说明的是，此句可以是指三个相独立的部件依次连接，也可以是指一个整体构件上的三个不同部位的相对关系例如加固件3、第一侧板11及加强件4一体成型。则壳外的空间通过第三通孔410、第一通孔100、第二通孔310与壳腔相连通，第三通孔410、第一通孔100、第二通孔310形成一个通路。
为加强理解，可换一种描述方式如下，加强件4与加固件3分别在壳体1的内外两侧与第一侧板11连接且均覆盖第一通孔100所在的区域，而第一通孔100延伸贯穿了加强件4与加固件3，在加强件4上的孔段形成第三通孔410，在加固件3上的孔段形成第二通孔310。
注液时，注液管压抵在加强件4上，液体依次流经加强件4上的第三通孔410、第一侧板11上的第一通孔100和加固件3上的第二通孔310进入壳腔内。
由于加固件3对第一侧板11围设在第一通孔100周向上的区域(周边区域)进行支撑，加强件4对第一侧板11围设在第一通孔100周向上的区域进行加强，在第一通孔100处，第一侧板11的两侧均形成了增厚区域，即注液孔所在区域的厚度增加，显著提升了第一通孔100所在区域的结构强度，提升了该部位的负载能力和抗形变能力，防止该区域作为注液部位进行注液而承受较大压力时，产生凹陷等变形情况，更不易于产生开缝开裂的情况。在注液完毕后，封口件5与加强件4能够更好的贴合，具有更大的接触面积，加之加固件3与加强件4均对注液部位进行结构加强，封口件与加强件4连接时例如焊接，也能施加更大的操作力度，既便于进行连接操作，也能够更紧密更牢固的封闭第三通孔410，提高连接的稳固性和密封牢靠性。
可见，本申请提供的电池，相比于现有技术中未设置有加强件4和/或加固件3的电池，具有更高的密封性、使用安全性和质量保障性。
一种实施例中，加强件4、加固件3及第一侧板11三者为一体成型结构，或者，三者连接为一体式构件(指的是连接为非可拆卸连接，且连接之后形成一个整体式的、连接处密封连接的构件)。则，相当于第一侧板11内外两侧的增厚区域与第一侧板之间，不存在连接之处或不存在泄露缝隙，不存在结构特别薄弱之处，进一步提升了第一通孔100所在区域的结构强度，进一步提升了该部位的负载能力和抗形变能力，该区域作为注液部位进行注液而承受较大压力时，更不易于产生开缝开裂的情况。
加固件3、加强件4及第一侧板11可以通过对一整块材料进行机加工如铣削等来一体成型。加固件3、加强件4及第一侧板11也可焊接为一体式构件，则，三者之间的连接处的结构强度高，具有较高的抗形变能力，能够负载注液过程中注液管对注液部位的抵压力。
其中，第一通孔100在第一侧板11上的投影与第二通孔310在第一侧板11上的投影可以部分重叠，或全部重叠。一种实施例中，第二通孔310在第一侧板11上的投影覆盖第一通孔100在第一侧板11上的投影。也就是说，第二通孔310的孔径不小于第一通孔100的孔径，第三通孔410在第一侧板11上的投影与第一通孔100在第一侧板11上的投影可以部分重叠，或全部重叠。一种实施例中，第一通孔100在第一侧板11上的投影覆盖第三通孔410在第一侧板11上的投影。也就是说，第一通孔100的孔径不小于第三通孔410的孔径。
第一通孔100、第二通孔310和第三通孔410可以同轴设置。或者，同心度不大于1.5mm。
电池还包括有封口件5，封口件5与加强件4密封连接，封口件5在第一侧板11上的投影覆盖第三通孔410在第一侧板11上的投影，从而对第三通孔410进行了有效密封。
封口件5与加强件4可焊接，且由于加固件3的存在，焊接封口件5时，更便于施加力度，能够焊接的更牢固。
如图1所示，加强件4包括板体411，板体411与第一侧板11连接，第三通孔410开设在板体411上，沿板体411的厚度方向也即加强件4至第一侧板11的方向呈贯通状。第一通孔100处于板体411在第一侧板11上的投影区域的边缘内，即板体411环绕第一通孔100设置，覆盖第一通孔100周边的区域，从而板体411能够对第一通孔100的周向进行有效密封，即便注液时，此部位受外力压抵，电解液从第三通孔410进入第 一通孔100时，也不会从第一侧板11与加强件4之间泄露。
加固件3包括第一加固部311，第一加固部311与第一侧板11连接，第二通孔310开设在第一加固部311上，沿第一加固部311的厚度方向也即第一侧板11至加固件3的方向呈贯通状。第一通孔100处于第一加固部311在第一侧板11上的投影区域的边缘内，即第一加固部311环绕第一通孔100，覆盖第一通孔100周边的区域，从而第一加固部311能够对第一通孔100的周向进行有效密封，即便注液时，此部位受外力压抵，也不会开裂，有效防止电解液浸入第一侧板11与加固件3之间而在使用中容易导致加固件3脱落的现象。
封口件5包括第一侧板11相连的封板511，封板511覆盖第三通孔410，且封板511与第一侧板11密封连接。封板511与第一侧板11可为焊接。
如图4所示，第一加固部311、第一侧板11、板体411及封板511沿第一侧板11的厚度方向依次排列，并可以彼此焊接而形成一体式构件，使得电池具有极高的密封性和质量保障。
一种实施例中，封口件5除封板511外，还设置有凸台512，凸台512至少凸出于封板511的一侧，并用于插入第三通孔410，第三通孔410在径向上的投影与凸台512在径向上的投影至少部分重叠，第三通孔410在第一侧板11上的投影覆盖凸台512在第一侧板11上的投影。通过凸台512与第三通孔410插接定位，可以实现封口件5的快速准确定位，也能够保证封板511将第三通孔410周边的区域全方位覆盖密封，防止因错位而导致连接强度不均匀，第三通孔410周向上存在薄厚不一或强度严重不一的连接部位，从而容易缩短电池使用寿命的问题。
第三通孔410的孔壁与凸台512的外侧壁可以相接触，也可以具有间距。
第一通孔100在第一侧板11上的投影与凸台512在第一侧板11上的投影至少部分重叠，具体可以是部分重叠，也可以是全部重叠。全部重叠时，第一通孔100在第一侧板11上的投影覆盖凸台512在第一侧板11上的投影。
第二通孔310在第一侧板11上的投影与凸台512在第一侧板11上的投影至少部分重叠，具体可以是部分重叠，也可以是全部重叠。全部重叠时，第二通孔310在第一侧板11上的投影覆盖凸台512在第一侧板11上的投影。
还可以是，第一通孔100、第二通孔310、第三通孔410及凸台512均同轴设置。
凸台512可以仅插入第三通孔410内，凸台512在第三通孔410轴向上的尺寸不大于第三通孔410的轴向长度。此实施例中，凸台512的外侧壁与第三通孔410的孔壁可以相接触也可以具有间距。
或者，凸台512插入第三通孔410内及第一通孔100内，凸台512在第三通孔410轴向上的尺寸不小于第三通孔410的轴向长度，但不大于第三通孔410和第一通孔100的轴向长度之和。此实施例中，凸台512的外侧壁与第三通孔410的孔壁可以相接触也可以具有间距，与第一通孔100的孔壁可以相接触也可以具有间距。
或者，凸台512插入第三通孔410内、第一通孔100及第二通孔310内，凸台512在第三通孔410轴向上的尺寸不小于第三通孔410和第一通孔100的轴向长度之和。此实施例中，凸台512的外侧壁与第三通孔410的孔壁可以相接触也可以具有间距，与第一通孔100的孔壁可以相接触也可以具有间距，与第二通孔310的孔壁可以相接触也可以具有间距。
凸台512的轴向截面为圆柱形、锥形、矩形、方形、半圆形、U形及弓形中的任意一种。
进一步而言，如图7-10所示，加强件4与加固件3二者之一上设置有凸缘，凸缘至少能够插入第一通孔100内。如此设置，既能够便于加强件4与第一侧板11、或加固件3与第一侧板11、或三者之间的定位对接，也对电解液的注入起到导向作用。
一种实施例中，凸缘设在加强件4上，如图7和图8所示，加强件4包括凸出于板体411一侧的第一凸缘412，第三通孔410沿轴向贯穿第一凸缘412。即第一凸缘412呈筒状，筒孔由第三通孔410延伸形成。
第一凸缘412可穿设于第一通孔100内，轴向长度不大于第一通孔100的轴向长度。如此，加固件3与第一侧板11便于定位对接，避免第一通孔100与第三通孔410错位。
或者，第一凸缘412包括第一段与第二段，第一段穿设于第一通孔100内，第二段穿设于第二通孔310内，即第一凸缘412穿设于第一通孔100及第二通孔310内；而第一凸缘412的轴向长度可以是大于第一通孔100的轴向长度，却小于第一通孔100及第二通孔310的轴向长度之和。如此，加强件4与第一侧板11和加固件3均便于准确地定位对接，可以保证第一通孔100、第二通孔310和第三通孔410相对正，避免错位而影响注液速度。
或者，第一凸缘412包括第一段与第二段，第一段穿设于第一通孔100内，第二段穿设于第二通孔310内，第一凸缘412穿设于第一通孔100及第二通孔310内；而第一凸缘412的轴向长度不小于第一通孔100及第二通孔310的轴向长度之和，具体包括与第二通孔310远离第一通孔100的一端的端面相齐平，或，超出第二远离第一通孔100的一端的端面。如此，加强件4与第一侧板11和加固件3均便于准确地定位对接，可 以保证第一通孔100、第二通孔310和第三通孔410相对正，避免错位而影响注液速度。
第一凸缘412穿设于第一通孔100内时，可以是，第一凸缘412的外径与第一通孔100的内径相匹配，即，第一凸缘412的外侧壁与第一通孔100的孔壁(孔壁)相接触。例如第一凸缘412的外径与第一通孔100的内径过盈配合，如此设置，第一凸缘412的外侧壁与第一通孔100的孔壁之间通过尺寸配合能够形成密封性效果，注入电解液时，电解液基本不会进入第一凸缘412与第一通孔100之间。
当然，在其他的实施例中，也可以是，第一凸缘412的外侧壁与第一通孔100的孔壁之间具有间距。
第一凸缘412穿设于第一通孔100及第二通孔310内时，第一凸缘412包括第一段和第二段，第一段的外侧壁与第一通孔100的孔壁(孔壁)可以相接触，第二段的外侧壁与第二通孔310的孔壁(孔壁)可以相接触。例如第一段的内径与第一通孔100的内径相匹配即过盈配合，第二段的外径与第二通孔310的内径相匹配即过盈配合。则，第一凸缘412的外侧壁与第一通孔100及第二通孔310的孔壁之间均通过尺寸配合能够形成密封性效果，注入电解液时，电解液基本不会进入第一凸缘412与第一通孔100和第二通孔310之间。
或者，第一段的外侧壁与第一通孔100的孔壁之间具有间距，第二段的外侧壁与第二通孔310的孔壁之间具有间距。
加强件4上设置有第一凸缘412且封口件5设置有凸台512时，如图7所示，凸台512嵌入第三通孔410内。由于通过第一凸缘412，已经实现了加强件4、第一侧板11、加固件3之间的定位，凸台512在第三通孔410轴向上的尺寸可小于第三通孔410的轴向长度。
当然，凸台512在第三通孔410轴向上的尺寸也可以等于或大于第三通孔410的轴向长度。
此实施例中，凸台512的外侧壁与第三通孔410的孔壁可以相接触也可以具有间距。
另一种实施例中，凸缘设在加固件3上，如图9和图10所示，加固件3包括凸出于第一加固部311一侧的第二凸缘316，第二通孔310沿轴向贯穿第二凸缘316。即第一凸缘412呈筒状，筒孔由第三通孔410延伸形成。
第二凸缘316可穿设于第一通孔100内，轴向长度不大于第一通孔100的轴向长度，如此，加固件3与第一侧板11便于定位对接，避免第一通孔100与第二通孔310错位。
或者，第二凸缘316包括第一段与第二段，第一段穿设于第一通孔100内，第二段穿设于第三通孔410内，即第二凸缘316穿设于第一通孔100及第三通孔410内；而第二凸缘316的轴向长度可以是使大于第一通孔100的轴向长度，却小于第一通孔100及第三通孔410的轴向长度之和。如此，加固件3与第一侧板11和加强件4均便于准确地定位对接，可以保证第一通孔100、第二通孔310和第三通孔410相对正，避免错位而影响注液速度。
或者，第二凸缘316包括第一段与第二段，第一段穿设于第一通孔100内，第二段穿设于第三通孔410内，第二凸缘316穿设于第一通孔100及第三通孔410内；而第二凸缘316的轴向长度不小于第一通孔100及第三通孔410的轴向长度之和，具体包括与第三通孔410远离第一通孔100的一端的端面相齐平，或，超出第二远离第一通孔100的一端的端面。如此，加固件3与第一侧板11和加强件4均便于准确地定位对接，可以保证第一通孔100、第二通孔310和第三通孔410相对正，避免错位而影响注液速度。
第二凸缘316仅穿设于第一通孔100内时，可以是，第二凸缘316的外侧壁与第一通孔100的孔壁相接触，第二凸缘316的外径与第一通孔100的内径相匹配，例如第二凸缘316的外径与第一通孔100的内径过盈配合，如此设置，第二凸缘316与第一通孔100通过尺寸配合形成了密封性效果，注入电解液时，电解液基本不会进入第二凸缘316与第一通孔100之间，有效防止第二凸缘316与第一通孔100之间囤积电解液而影响后期使用。
也可以是，第二凸缘316的外侧壁与第一通孔100的孔壁之间具有间距。
第二凸缘316穿设于第一通孔100及第三通孔410内时，第二凸缘316包括第一段和第二段，可以是，第一段的外侧壁与第一通孔100的孔壁相接触，第二段的外侧壁与第三通孔410的孔壁相接触，例如，第一段的内径与第一通孔100的内径相匹配即过盈配合，第二段的外径与第三通孔410的内径相匹配即过盈配合。则，第二凸缘316与第一通孔100及第二通孔410均通过尺寸配合形成了密封性效果，注入电解液时，电解液基本不会进入第二凸缘316与第一通孔100和第三通孔410之间，有效防止第二凸缘316与通孔之间囤积电解液而影响后期使用。
当然，也可以是，第一段的外侧壁与第一通孔100的孔壁之间具有间距，第二段的外侧壁与第三通孔410的孔壁之间具有间距。
在封口件5设置有凸台512，加固件3上设置有第二凸缘316，且第二凸缘316靠近封口件5的一端插入第三通孔410内的实施例中，根据第二凸缘316的长度情况，凸台512可以是穿设于第三通孔410内，也可以是穿设于第二通孔310内。例如当第二凸 缘316靠近封口件5的一端的端面，与板体411靠近封口件5的端面齐平或基本齐平时，如图9所示，凸台512穿设于第二通孔310内。第二通孔310的孔壁与凸台512的外侧壁相接触或具有间距。而由于通过第二凸缘316，已经实现了加强件4、第一侧板11、加固件3之间的定位，凸台512在第二通孔310轴向上的尺寸可小于第二通孔310的轴向长度。
当然，凸台512在第二通孔310轴向上的尺寸也可以等于或大于第二通孔310的轴向长度。
对上述内容进行概括，加固件3、第一侧板11、加强件4及封口件5依次排列并连接，其中加固件3、第一侧板11及加强件4三者可以为一体成型结构或连接为一体式构件，封口件5通过与加强件4密封连接，例如焊接，也可以与三者形成一体式构件。第一侧板11作为壳体1的一个侧板，呈板状，加固件3包括与第一侧板11相连的第一加固部311，加强件4包括与第一侧板11贴合相连的板体411，封口件5包括与板体411相连的封板511，第一加固部311、板体411及封板511均可呈板块状。进一步而言，封口件5上设有凸台512，与加强件4进行定位。再进一步而言，加固件3、第一侧板11及加强件4之间可以通过凸缘进行定位，凸缘可设在加固件3上也可设在加强件4上。
如图6所示，封口件5包括封板511与凸台512，凸台512可由凸出于封板511一侧的实体块形成，也可由凹陷于封板511的槽体形成。
如图1和图11所示，加固件3在背离第一侧板11的一侧设置有凹槽300，凹槽300的槽腔、第二通孔310及壳腔相连通。电解液从第二通孔310流入壳腔的同时，会流经槽腔，该凹槽300对电解液的流动具有导向作用。该凹槽300优先为通槽。
电芯2具有第一极耳21和第二极耳。两个极耳都需要与壳体1外的电池线路进行电连接。一种实施例中，加固件3还包括与第一加固部311相连的第二加固部312，第二加固部312与电芯2的第一极耳21连接。则加固件3还起到了连接第一极耳21与壳体1的作用。
具体地，加固件3可通过连接件6与第一极耳21连接，则第一极耳21通过连接件6、加固件3及第一侧板11与电池的线路电连接，实现电芯2的一个极耳与壳外线路电连的线路设置。此实施例中，加固件3将实现注液处的强度、连接壳体1及第一极耳21的两个功能集合为一体，一个部件实现两个作用。此实施例中，第一加固部311与第二加固部312可围成上述凹槽300，该凹槽300可呈L型或类L型。
一种实施例中，加固件3包括与第一加固部311相连的第三加固部313，壳体1包括与第一侧板11相连的底板12，第三加固部313与底板12相连。如此设置，增强了对 第一加固部311的支撑作用，进一步增强注液部位的结构强度。此实施例中，第一加固部311与第三加固部313可围成上述凹槽300，该凹槽300可呈L型或类L型。
一种实施例中，加固件3包括与第一加固部311相连的第二加固部312和第三加固部313，第二加固部312和第三加固部313相对设置、位于第一加固部311的相对两侧。第一加固部311、第二加固部312和第三加固部313围成上述凹槽300。第二通孔310开设在凹槽300的槽底壁上，即第一加固部311形成凹槽300的槽底壁。凹槽300的槽口朝向壳腔，槽腔沿第一侧板11的长度方向延伸，两端可敞口而形成通槽，凹槽300的轴向可与第二通孔310的轴向垂直。凹槽300的横截面可为U形或半圆形或弧形，或者，凹槽300的两个侧壁均与底壁相垂直。
一种实施例中，如图11和图16所示，加固件3在沿第一侧板11至加固件3的方向上的最小厚度(第一加固部311的最薄部位的厚度，也即第一加固部311在该方向上的厚度)为0.2mm～1mm，例如0.2mm、0.5mm、0.8mm、1mm等；
一种实施例中，加固件3在沿壳体1的厚度方向上的最小厚度为0.2mm～1mm，例如0.2mm、0.5mm、0.8mm、1mm等。
一种实施例中，沿第一侧板11至第一极耳21的方向，加固件3的长度为1mm-3mm，例如1mm、1.2mm、1.5mm、1.8mm、2mm、2.2mm、2.5mm、2.8mm、3mm等。
具体地，加固件3可以一体成型，例如由钣金件折弯形成，或者采用金属粉末冶金冶金成型。
如图12至图15所示，第一加固部311和第二加固部312之间形成有夹角，该夹角例如不大于90°(即二者表面或所在平面之间形成不大于90°的夹角)，第二加固部312与第一加固部311之间设有一个或多个加强筋315。具体地，加强筋315位于凹槽300内，具体位于第一加固部311和第二加固部312的夹角处，其一端与第一加固部311相连，另一端与第二加固部312相连，从而支撑第一加固部311和第二加固部312，提高加固件31的结构稳定性，避免在第二加固部312的焊接等过程中发生变形等现象。
如图12至图15所示，第二加固部312与第一加固部311的相接部位具有与加强筋315位置对应的加强区314，加强区314向靠近第二加固部312与第一加固部311的夹角方向(面向凹槽300的方向)凹陷并形成加强筋315，即在加强区314，第二加固部312与第一加固部311的相接部位的外侧(背离凹槽300的一侧/面向第一侧板11的一侧)凹陷形成第四凹槽，第四凹槽具有相对的两个侧壁、以及位于两个侧壁之间的底壁(即加强筋315)，一个侧壁与第一加固部311连接并从其与第一加固部311相接的一侧向底壁延伸，另一个侧壁与第二加固部312连接并从其与第二加固部312相接的一 侧向底壁延伸，第四凹槽侧壁的横截面形状例如为三角形。
具体地，加强筋315可以是由加强区被冲压形成，即从第二加固部312与第一加固部311的相接部位的外侧进行冲压，使其向第一加固部311与第二加固部312的夹角方向凹陷，形成加强筋315。
如图12至图15所示，加强筋315与第一加固部311相接的一端和加强筋315与第二加固部312相接的一端之间的连线与第一加固部311的表面(第一加固部与加强筋315相接的一面)的夹角(夹角α1)为30°～60°，例如30°、35°、40°、45°、50°、55°、60°等，加强筋315与第一加固部311相接的一端和加强筋315与第二加固部312相接一端之间的连线与第二加固部312的表面(与加强筋315相接的一面)的夹角(夹角α2)为30-60°，例如30°、35°、40°、45°、50°、55°、60°等。
示例性地，加强筋315位于凹槽300的一面为斜面(其一端与第一加固部311相接，另一端与第二加固部312相接)，则该斜面和第一加固部311与加强筋315相接的一面之间的夹角为30°～60°，该斜面和第二加固部312与加强筋315相接的一面之间的夹角为30°～60°。
一般情况下，壳体1的长度方向亦为电芯2的长度方向，壳体1的宽度方向亦为电芯2的宽度方向，壳体1的厚度方向亦为电芯2的厚度方向。第一极耳21可以是正极耳或负极耳，即第一极耳21和第二极耳中的一者是正极耳，另一者是负极耳，优选第一极耳21为负极耳。
壳体1具体可以是金属包装壳，即其可以是金属材质，意即第一侧板11、第二侧板、第三侧板、第四侧板、底板12、顶盖均可以是金属材质，例如钢、铝、铝合金、镍、铁或镍铁合金等。
一般情况下，当壳体1与正极耳电连接时，壳体1可以是与正极耳同极性的材质，例如分别为铝或铝合金，二者的具体材质种类可以相同或不同(二者材质不同时，例如正极耳的材质是铝，而壳体1的材质是铝合金)；当壳体1与负极耳电连接时，壳体1与负极耳是同极性材质，例如分别为钢、镍、铁或镍铁合金，二者的具体材质种类可以相同或不同。
电池的电芯2为叠片式电芯或卷绕式电芯。为叠片式电芯时，电芯2包括多个层叠设置的电极片，电极片沿电芯2的厚度方向层叠设置。
以上结合具体实施例描述了本申请的基本原理，但是，需要指出的是，在本申请中提及的优点、优势、效果等仅是示例而非限制，不能认为这些优点、优势、效果等是本申请的各个实施例必须具备的。另外，上述公开的具体细节仅是为了示例的作用和便于 理解的作用，而非限制，上述细节并不限制本申请为必须采用上述具体的细节来实现。
本申请中涉及的部件、装置仅作为例示性的例子并且不意图要求或暗示必须按照附图示出的方式进行连接、布置、配置。如本领域技术人员将认识到的，可以按任意方式连接、布置、配置这些部件、装置。诸如“包括”、“包含”、“具有”等等的词语是开放性词汇，指“包括但不限于”，且可与其互换使用。这里所使用的词汇“或”和“和”指词汇“和/或”，且可与其互换使用，除非上下文明确指示不是如此。这里所使用的词汇“诸如”指词组“诸如但不限于”，且可与其互换使用。
还需要指出的是，在本申请的装置、设备中，各部件是可以分解和/或重新组合的。这些分解和/或重新组合应视为本申请的等效方案。
提供所公开的方面的以上描述以使本领域的任何技术人员能够做出或者使用本申请。对这些方面的各种修改对于本领域技术人员而言是非常显而易见的，并且在此定义的一般原理可以应用于其他方面而不脱离本申请的范围。因此，本申请不意图被限制到在此示出的方面，而是按照与在此公开的原理和新颖的特征一致的最宽范围。
应当理解，本申请实施例描述中所用到的限定词“第一”、“第二”、“第三”、“第四”、“第五”和“第六”仅用于更清楚的阐述技术方案，并不能用于限制本申请的保护范围。
为了例示和描述的目的已经给出了以上描述。此外，此描述不意图将本申请的实施例限制到在此公开的形式。尽管以上已经讨论了多个示例方面和实施例，但是本领域技术人员将认识到其某些变型、修改、改变、添加和子组合。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种电池，其特征在于，包括有:
    壳体(1)，围成有壳腔，具有第一侧板(11)，所述第一侧板(11)上开设有第一通孔(100)；
    加固件(3)，位于所述壳体(1)内部，具有第二通孔(310)；
    加强件(4)，位于所述壳体(1)外部，具有第三通孔(410)；
    其中，所述加固件(3)、所述第一侧板(11)及所述加强件(4)依次连接，所述第三通孔(410)通过所述第一通孔(100)及所述第二通孔(310)与所述壳腔连通。
  2. 如权利要求1所述的电池，其特征在于，所述加固件(3)、所述加强件(4)与所述第一侧板(11)为一体成型结构，或，所述加固件(3)、所述加强件(4)与所述第一侧板(11)连接为一体式构件。
  3. 如权利要求1所述的电池，其特征在于，所述第二通孔(310)在所述第一侧板(11)上的投影覆盖所述第一通孔(100)在所述第一侧板(11)上的投影，和/或，所述第一通孔(100)在所述第一侧板(11)上的投影覆盖所述第三通孔(410)在所述第一侧板(11)上的投影。
  4. 如权利要求1所述的电池，其特征在于，还包括有封口件(5)，所述封口件(5)与所述加强件(4)密封连接，所述封口件(5)在所述第一侧板(11)上的投影覆盖所述第三通孔(410)在所述第一侧板(11)上的投影。
  5. 如权利要求1所述的电池，其特征在于，所述加强件(4)包括板体(411)，所述板体(411)与所述第一侧板(11)连接，所述第三通孔(410)开设在所述板体(411)上，所述第一通孔(100)处于所述板体(411)在所述第一侧板(11)上的投影区域的边缘内。
  6. 如权利要求1所述的电池，其特征在于，所述加固件(3)包括第一加固部(311)，所述第一加固部(311)与所述第一侧板(11)连接，所述第二通孔(310)开设在所述第一加固部(311)上。
  7. 如权利要求5所述的电池，其特征在于，所述加强件(4)还包括凸出于所述板体(411)一侧的第一凸缘(412)，所述第三通孔(410)沿轴向贯穿所述第一凸缘(412)。
  8. 如权利要求7所述的电池，其特征在于，所述第一凸缘(412)穿设于所述第一通孔(100)内；
    或，所述第一凸缘(412)穿设于所述第一通孔(100)及所述第二通孔(310)内；
    或，所述第一凸缘(412)的轴向尺寸不小于所述第一通孔(100)及所述第二通孔 (310)的轴向长度之和。
  9. 如权利要求8所述的电池，其特征在于，所述第一凸缘(412)外侧壁与所述第一通孔(100)的孔壁相接触；
    或，所述第一凸缘(412)包括第一段和第二段，所述第一段的外侧壁所述第一通孔(100)的孔壁相接触，所述第二段的外侧壁所述第二通孔(310)的孔壁相接触。
  10. 如权利要求6所述的电池，其特征在于，所述加固件(3)还包括凸出于所述第一加固部(311)一侧的第二凸缘(316)，所述第二通孔(310)沿轴向贯穿所述第二凸缘(316)。
  11. 如权利要求10所述的电池，其特征在于，所述第二凸缘(316)穿设于所述第一通孔(100)内；
    或，所述第二凸缘(316)穿设于所述第一通孔(100)及所述第三通孔(410)内；
    或，所述第二凸缘(316)的轴向尺寸不小于所述第一通孔(100)及所述第三通孔(410)的轴向长度之和。
  12. 如权利要求4所述的电池，其特征在于，所述封口件(5)包括与所述第一侧板(11)贴合相连的封板(511)，所述封板(511)覆盖所述第三通孔(410)。
  13. 如权利要求12所述的电池，其特征在于，所述封板(511)的朝向所述第一侧板(11)的一侧设有伸入至所述第三通孔(410)内的凸台(512)。
  14. 如权利要求13所述的电池，其特征在于，所述凸台(512)穿设于所述第三通孔(410)内；
    或，所述凸台(512)穿设于所述第三通孔(410)及所述第一通孔(100)内；
    或，所述凸台穿设于所述第三通孔(410)、所述第一通孔(100)及所述第二通孔(310)内；
    或，所述加固件(3)包括插入所述第一通孔(100)及所述第三通孔(410)内的第二凸缘(316)，所述第二通孔(310)沿轴向贯穿所述第二凸缘(316)，所述凸台(512)穿设于所述第二通孔(310)内。
  15. 如权利要求14所述的电池，其特征在于，所述第二通孔(310)在所述第一侧板(11)上的投影覆盖所述凸台(512)在所述第一侧板(11)上的投影；和/或，所述第一通孔(100)在所述第一侧板(11)上的投影覆盖所述凸台(512)在所述第一侧板(11)上的投影；和/或，所述第一通孔(100)、所述第二通孔(310)、所述第三通孔(410)及所述凸台(512)均同轴设置；和/或，
    所述凸台(512)在所述第三通孔(410)轴向上的尺寸不小于所述第三通孔(410) 的轴向长度。
  16. 如权利要求6所述的电池，其特征在于，所述加固件(3)还包括与所述第一加固部(311)相连的第二加固部(312)，所述第二加固部(312)通过连接件(6)与第一极耳(21)连接；
    和/或，所述加固件(3)还包括与所述第一加固部(311)相连的第三加固部(313)，所述壳体(1)包括与所述第一侧板(11)相连的底板(12)，所述第三加固部(313)与所述底板(12)相连。
  17. 如权利要求16所述的电池，其特征在于，所述第二加固部(312)与所述第一加固部(311)之间设有一个或多个加强筋(315)。
  18. 如权利要求17所述的电池，其特征在于，
    所述第二加固部(312)与所述第一加固部(311)的相接部位具有与所述加强筋(315)位置对应的加强区(314)，所述加强区(314)向靠近所述第二加固部(312)与所述第一加固部(311)的夹角方向凹陷并形成所述加强筋(315)；和/或，
    所述加强筋(315)与所述第一加固部(311)相接的一端和所述加强筋(315)与所述第二加固部(312)相接的一端之间的连线与所述第一加固部(311)的表面的夹角为30°～60°；和/或，
    所述加强筋(315)与所述第一加固部(311)相接的一端和所述加强筋(315)与所述第二加固部(312)相接的一端之间的连线与所述第二加固部(312)的表面的夹角为30°～60°。
  19. 如权利要求16所述的电池，其特征在于，所述第一极耳(21)通过所述连接件(6)、所述加固件(3)及所述第一侧板(11)与所述电池的线路电连接。
  20. 如权利要求1-14任一项所述的电池，其特征在于，所述加固件(3)在沿所述第一侧板(11)至所述加固件(3)的方向上的最小厚度为0.2mm～1mm；
    和/或，所述加固件(3)在沿电芯(2)的厚度方向上的最小厚度为0.2mm～1mm；和/或，沿所述第一侧板(11)至所述加固件(3)的方向，所述加固件(3)的长度为1mm-3mm。
PCT/CN2023/091568 2022-06-30 2023-04-28 一种电池 WO2024001498A1 (zh)

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CN217589145U (zh) * 2022-06-30 2022-10-14 珠海冠宇电池股份有限公司 一种电池
CN218586277U (zh) * 2022-10-21 2023-03-07 珠海冠宇电池股份有限公司 电池

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030077511A1 (en) * 2001-10-02 2003-04-24 Hiroyuki Mizuno Closed type battery
CN208955033U (zh) * 2018-10-19 2019-06-07 宁德时代新能源科技股份有限公司 二次电池
CN216015456U (zh) * 2021-09-28 2022-03-11 东莞锂微电子科技有限公司 具有补强结构的外壳组件及其扣式电池
CN114597610A (zh) * 2022-03-26 2022-06-07 珠海冠宇电池股份有限公司 电池
CN114665233A (zh) * 2022-03-26 2022-06-24 珠海冠宇电池股份有限公司 电池
CN217589145U (zh) * 2022-06-30 2022-10-14 珠海冠宇电池股份有限公司 一种电池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030077511A1 (en) * 2001-10-02 2003-04-24 Hiroyuki Mizuno Closed type battery
CN208955033U (zh) * 2018-10-19 2019-06-07 宁德时代新能源科技股份有限公司 二次电池
CN216015456U (zh) * 2021-09-28 2022-03-11 东莞锂微电子科技有限公司 具有补强结构的外壳组件及其扣式电池
CN114597610A (zh) * 2022-03-26 2022-06-07 珠海冠宇电池股份有限公司 电池
CN114665233A (zh) * 2022-03-26 2022-06-24 珠海冠宇电池股份有限公司 电池
CN217589145U (zh) * 2022-06-30 2022-10-14 珠海冠宇电池股份有限公司 一种电池

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