WO2023045461A1 - 一种用于电池箱体的套筒、电池及用电装置 - Google Patents

一种用于电池箱体的套筒、电池及用电装置 Download PDF

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Publication number
WO2023045461A1
WO2023045461A1 PCT/CN2022/101781 CN2022101781W WO2023045461A1 WO 2023045461 A1 WO2023045461 A1 WO 2023045461A1 CN 2022101781 W CN2022101781 W CN 2022101781W WO 2023045461 A1 WO2023045461 A1 WO 2023045461A1
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WIPO (PCT)
Prior art keywords
sleeve
main body
battery
mounting plate
section
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PCT/CN2022/101781
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English (en)
French (fr)
Inventor
王勇
杨辉
王庆
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宁德时代新能源科技股份有限公司
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Publication of WO2023045461A1 publication Critical patent/WO2023045461A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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 battery structure technology, in particular to a sleeve for a battery box, a battery and an electrical device.
  • the battery case is widely made of aluminum materials in the prior art.
  • a connecting sleeve is designed at the battery mounting position, and the connecting sleeve is fixedly connected with the battery box by welding, or the connecting sleeve is generally fixed with the battery box by interference fit connect.
  • connection sleeve the strength of the weld heat-affected zone of the connecting sleeve is low, and it is prone to cracking under conditions such as vibration and impact; while the reverse pull-out force of the connecting sleeve during interference fit depends entirely on the size of the interference. The surplus will cause the surface of the assembly hole to collapse and deform. Therefore, there is an urgent need to improve the existing connection scheme between the connection sleeve and the battery box.
  • a sleeve for a battery box including:
  • the main body is used for fastening and fitting with the assembly hole of the battery box;
  • the mounting plate is arranged at one end of the sleeve in the axial direction, and the mounting plate is connected with the main body;
  • the main part includes:
  • the gap section is arranged at one end of the main body in the axial direction close to the mounting plate, the gap section is connected with the mounting plate, and the outer diameter of the gap section is smaller than the inner diameter of the assembly hole;
  • the interference section is arranged at the end of the main body away from the mounting plate in the axial direction, the interference section is connected with the gap section, and the outer diameter of the interference section is larger than the inner diameter of the assembly hole.
  • the main body of the sleeve of the battery case includes a gap section and an interference section, wherein the outer diameter of the gap section is smaller than the inner diameter of the assembly hole, the outer diameter of the interference section is larger than the inner diameter of the assembly hole, and the main body
  • the main body also includes a guide section
  • the guide section is arranged at the end of the main body away from the mounting plate, the guide section is connected with the interference section, and the outer diameter of the guide section gradually decreases along the direction away from the interference section.
  • the outer diameter of the guide section gradually decreases along the direction away from the interference section, so as to facilitate the alignment and insertion of the sleeve and the assembly hole.
  • the outer diameter of the end of the guide segment is 0.1mm-0.2mm smaller than the inner diameter of the assembly hole.
  • the mounting plate is provided with a glue groove, and the glue groove is located on the surface of the mounting plate close to the main body.
  • the mounting plate is provided with a glue groove, and the glue groove is used for coating structural glue to connect the mounting plate with the profile where the assembly hole is located, so as to improve the connection strength of the sleeve.
  • the glue groove is an annular groove and is arranged around the main body.
  • the glue groove is an annular groove and surrounds the main body, so that the structural glue can be coated around the main body, and the distribution of the structural glue is more uniform and reasonable, which can ensure the reliability of the connection between the mounting plate and the profile where the assembly hole is located .
  • the side of the mounting plate close to the main body is provided with an annular protruding portion, the annular protruding portion surrounds the main body, and forms a glue groove with the outer peripheral surface of the main body close to the mounting plate.
  • the glue tank is arranged close to the main body, so that the structural glue is distributed on the mounting plate close to the center, which can ensure the reliability of the connection between the mounting plate and the connecting plate where the assembly hole is located.
  • the depth of the glue groove is greater than or equal to 0.2mm.
  • the depth of the glue groove is greater than or equal to 0.2 mm to ensure the connection strength between the mounting plate and the profile where the assembly hole is located.
  • a battery comprising:
  • the battery box is used to accommodate multiple battery cells; the battery box includes:
  • the connecting plate is connected with the battery box for mounting the battery box, and the connecting plate is provided with assembly holes;
  • the sleeve, the sleeve is the sleeve of any one of the above technical solutions; the main body is connected with the assembly hole.
  • the battery case includes a sleeve and a sleeve
  • the main body of the sleeve includes a gap section and an interference section, wherein the outer diameter of the gap section is smaller than the inner diameter of the assembly hole, and the outer diameter of the interference section is larger than the assembly hole
  • the inner diameter, the main body cooperates with the assembly hole through the interference section and the gap section, which can improve the reverse pull-out force, prevent the sleeve from falling off, and at the same time prevent the profile where the assembly hole is located from excessive extrusion and warping.
  • an adhesive layer is provided between the connecting plate and the mounting plate, and the adhesive layer connects the connecting plate and the mounting plate.
  • the adhesive layer can improve the connection strength between the connecting plate and the mounting plate.
  • An electrical device the electrical device includes the battery of any one of the above technical solutions, and the battery is used to provide electrical energy.
  • the above technical solution provides a sleeve for the battery box, a battery and an electrical device, wherein the main body of the sleeve of the battery box includes a gap section and an interference section, wherein the gap section
  • the outer diameter of the outer diameter is smaller than the inner diameter of the assembly hole
  • the outer diameter of the interference section is larger than the inner diameter of the assembly hole.
  • the main body cooperates with the assembly hole through the interference section and the gap section, which can not only improve the reverse pull-out force of the sleeve, but also prevent the sleeve from falling off , and at the same time prevent excessive extrusion and warping of the connecting plate where the assembly hole is located.
  • FIG. 1 is a schematic diagram of a partial structure of a vehicle disclosed in an embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a battery disclosed in an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a battery case disclosed in an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a battery cell disclosed in an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a matching relationship between a sleeve and a connecting plate disclosed in an embodiment of the present application;
  • Fig. 6 is a schematic diagram of the assembly of the sleeve and the assembly hole on the connecting plate disclosed in an embodiment of the present application;
  • Fig. 7 is a cross-sectional view of an assembled sleeve and connecting plate disclosed in an embodiment of the present application.
  • Fig. 8 is a front view of a sleeve disclosed in an embodiment of the present application.
  • Fig. 9 is an axial view of a sleeve disclosed in an embodiment of the present application.
  • Fig. 10 is a cross-sectional view along A-A direction in Fig. 11 .
  • Fig. 11 is a schematic view of the main body of a sleeve disclosed in an embodiment of the present application, facing the angle of view;
  • Fig. 12 is a partially enlarged view of part A in Fig. 7;
  • connection should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary.
  • connection should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary.
  • the applicant improved the sleeve of the battery box, and provided a gap section, an interference section, and a guide section on the main body of the sleeve.
  • the main body The matching section with the assembly hole is a gap section (the height of the gap section is designed according to the wall thickness of the profile), and the interference section is below the profile surface.
  • the interference section can ensure the reverse pull-out force of the sleeve, and the gap section can effectively reduce the increase of the gap between the sleeve and the surface of the connecting plate caused by the rebound of the connecting plate.
  • the mounting plate and the connection plate of the sleeve are bonded by structural glue, thereby further improving the reverse pull-out force and ensuring that the sleeve does not fall off during the transportation and hoisting conditions of the battery box.
  • the embodiment of the present application provides an electric device using a battery 200 as a power source.
  • the electrical device may be, but not limited to, a vehicle, a ship, or an aircraft.
  • the battery 200 can be used to power a vehicle, and the battery 200 is provided with a plurality of battery modules 21 .
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles.
  • a vehicle may include a motor 300 , a controller 100 and a battery 200 .
  • the controller 100 is used to control the battery 200 to supply power to the motor 300 .
  • the motor 300 is connected to the wheels through a transmission mechanism, so as to drive the vehicle to travel.
  • the battery 200 can be used as a driving power source for the vehicle, replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle.
  • the battery 200 may be located at the bottom or front or rear of the vehicle. Battery 200 may be used to power the vehicle.
  • the embodiment of the present application provides a battery 200 , a plurality of battery modules 21 can be connected to form the battery 200 , and each battery module 21 can be provided with a plurality of battery cells 1 .
  • the battery 200 includes a battery case 22, and the shape of the battery case 22 is not limited.
  • the battery box 22 can be a frame-shaped box, a disc-shaped box, or a box-shaped box.
  • the battery case 22 includes a case cover 23 , and the case cover 23 covers the battery case 22 .
  • the battery box 22 and the box cover 23 are closed to form a receiving portion, and the battery box 22 and the box cover 23 can be locked and fixed by fasteners such as bolts after being closed. As shown in FIG.
  • the battery module 21 includes a plurality of battery cells 1 , and the plurality of battery cells 1 can be electrically connected in series, in parallel or in parallel.
  • the battery 200 may include multiple battery cells 1, wherein the multiple battery cells 1 may be connected in series, in parallel, or in parallel. There are series and parallel connections. That is to say, a plurality of battery cells 1 can be directly disposed in the receiving portion of the case to form the battery 200 .
  • connection plates 24 the connection plates 24 can be made of the same metal material as the battery case 22, and the connection plates 24 can be connected with the battery case by welding or bolting.
  • the main structure of the body 22 is fixedly connected.
  • the battery 200 can be mounted on electrical equipment such as vehicles and airplanes through the connecting plate 24 .
  • a plurality of sleeves 3 are arranged on the connection plate 24, and the sleeves 3 are fixedly connected to the connection plate 24.
  • the battery 200 can be mounted on the power supply through the sleeve 3 through fasteners such as bolts and rivets. on the device.
  • the battery cell 1 includes a battery case 11 , an end cover 12 and an electrode assembly 13 disposed in the battery case 11 .
  • the battery casing 11 in the embodiment of the present application is a rectangular parallelepiped structure or other structures.
  • the battery case 11 has an inner space for accommodating the electrode assembly 13 and electrolyte, and an opening communicating with the inner space, and the end cap 12 fits into the opening.
  • the battery case 11 and the end cap 12 can be made of materials such as aluminum, aluminum alloy or plastic.
  • the end cap 12 is provided with a liquid injection hole 121 , an explosion-proof valve 122 and two electrode terminals 14 , one of which is a positive terminal and the other electrode terminal 14 is a negative terminal.
  • the liquid injection hole 121 is provided with a sealing nail 15 .
  • the electrode assembly 13 of the embodiment of the present application can be formed by stacking or winding a first pole piece, a second pole piece and a separator, wherein the separator is an insulator between the first pole piece and the second pole piece.
  • the first pole piece is exemplarily described as a positive pole piece
  • the second pole piece is a negative pole piece for illustration.
  • Both positive and negative electrodes include coated and uncoated regions.
  • the active material of the positive plate is coated on the coating area of the positive plate, and the active material of the negative plate is coated on the coating area of the negative plate. On the coated area, the active material is coated on the current collector formed of the thin metal plate, and on the uncoated area, the active material is not coated.
  • the electrode assembly 13 includes a main body, a positive pole ear and a negative pole ear.
  • the positive pole ear and the negative pole ear are respectively extended from one end of the main body.
  • the conductive connector is connected to the other electrode terminal 14 .
  • the positive pole tab and the negative pole tab can be located at one end of the main body, or can be respectively located at two ends of the main body.
  • a sleeve 3 for the battery case 22 is provided in the embodiment.
  • an assembly hole 241 is provided on the connecting plate 24 that is connected with the battery case 22, wherein, the assembly hole 241 can have a plurality, and the plurality of assembly holes 241 are arranged at intervals along the outer circumference of the battery case 22, and the assembly hole 241 can be Through hole, the sleeve 3 is connected with the assembly hole 241.
  • FIG. 6 it is a schematic diagram of the assembly of the sleeve 3 and the assembly hole 241 on the connection plate 24
  • FIG. 7 is a cross-sectional view of the assembly of the sleeve 3 and the connection plate 24 .
  • the connecting plate 24 can be a hollow multi-layer plate, and the connecting plate 24 includes an outer plate 242 and a middle plate 243, wherein the assembly hole 241 at least runs through the outer plate 242, and the main body 31 of the sleeve 3 is formed from the outer plate 242.
  • the outer side is inserted into the fitting hole 241 , and the end of the main body portion 31 abuts against the middle plate 243 .
  • an operation hole on the same axis as the assembly hole 241 is provided on the middle plate 243 , through which the mounting fasteners can pass through and mounting operations such as mounting can be performed.
  • the sleeve 3 includes a main body 31 and a mounting plate 32 (ie, a flange plate).
  • the sleeve 3 can be made of hard metals or alloys such as aluminum alloy, steel, and iron.
  • the main body 31 and the mounting plate 32 are connected, and the main body 31 and the mounting plate 32 can be fixed together by welding, or the main body 31 and the mounting plate 32 can be made by integral molding processes such as die-casting, stamping, and casting.
  • the main body 31 is used to fasten and fit with the assembly hole 241 on the connecting plate 24 of the battery case 22 ; the main body 31 can be a hollow circular tubular structure, so as to facilitate the passage of fasteners such as bolts.
  • the mounting plate 32 is arranged at one end of the sleeve 3 in the axial direction, and the mounting plate 32 is connected with one end of the main body portion 31 to form a T-shaped structure.
  • the main body 31 includes: a gap section 311 and an interference section 312 .
  • the gap section 311 is arranged at one end of the main body 31 in the axial direction close to the mounting plate 32 , the gap section 311 is connected to the mounting plate 32 , and the outer diameter of the gap section 311 is smaller than the inner diameter of the mounting hole 241 .
  • the interference section 312 is arranged at one end of the axis direction of the main body 31 away from the mounting plate 32, and the interference section 312 is connected with the gap section 311 (that is, the interference section 312 and the gap section 311 are adjacently arranged on the main body 31),
  • the outer diameter of the interference section 312 is larger than the inner diameter of the fitting hole 241 .
  • the outer diameter of the gap section 311 is equal to the inner diameter of the fitting hole 241 ⁇ (0-0.2 mm), that is, the outer diameter of the gap section 311 is 0-0.2 mm smaller than the inner diameter of the fitting hole 241 .
  • the outer diameter of the interference section 312 is equal to the inner diameter of the assembly hole 241 +0.05-0.2 mm), that is, the outer diameter of the interference section 312 is 0.05-0.2 mm larger than the inner diameter of the assembly hole 241 .
  • L1 is the length of the main body 31
  • L2 is the length of the gap section 311
  • L3 is the length of the interference section 312 .
  • the length L2 of the gap section 311 can be adjusted according to the thickness of the assembly hole 241 (the thickness of the connecting plate 24 at the location of the assembly hole 241), and the length L2 of the gap section 311 should be slightly greater than the thickness of the assembly hole 241, so that the assembly hole The inner wall of 241 is just inside the gap section 311 .
  • the outer diameter of the gap section 311 of the sleeve 3 is smaller than the inner diameter of the fitting hole 241
  • the outer diameter of the interference section 312 is larger than the inner diameter of the fitting hole 241
  • the main body 31 is connected with the interference section 312 and the gap section 311.
  • the cooperation of the assembly hole 241 can not only improve the reverse pull-out force of the sleeve 3 and prevent the sleeve 3 from falling off, but also prevent the connection plate where the assembly hole 241 is located from being excessively squeezed and warped, and prevent the connection plate 24 from warping and rebounding.
  • the gap between the connecting plate 24 and the mounting plate 32 increases. Through the above-mentioned embodiment, the gap between the connecting plate 24 and the mounting plate 32 can be controlled within 0-0.3 mm, thereby eliminating the risk of locking and crushing the sleeve 3 and the connecting plate 24 .
  • the main body 31 further includes a guide section 313 .
  • the guide section 313 is arranged on the end of the main body 31 away from the mounting plate 32, the guide section 313 is connected with the interference section 312 (that is, the guide section 313 is adjacent to the interference section 312), and along the direction away from the interference section 312
  • the outer diameter of the guide section 313 in the direction gradually decreases, that is, from the position close to the interference section 312 to the position away from the interference section 312, the outer diameter of the guide section 313 gradually decreases, and the guide section 313 is close to one end of the interference section 312
  • the end of the guide section 313 away from the interference section 312 is the small end (smaller outside diameter).
  • the outer diameter of the end of the guide section 313 away from the interference section 312 i.e. the small end surface
  • the outer diameter of the assembly hole 241 - 0.1-0.2mm
  • the sleeve 3 is also provided with a glue groove 33 , and the glue groove 33 is arranged on the mounting plate 32 .
  • the glue groove 33 is located on a side of the mounting plate 32 close to the main body 31
  • the side surface, that is, the glue groove 33 is located between the surface of the mounting plate 32 and the surface of the connecting plate 24 .
  • the glue groove 33 can be a groove processed on the surface of the mounting plate 32 near the main body 31 by milling or other means, or the glue groove 33 can be integrated with the mounting plate 32 through an integral molding process when the sleeve 3 is produced. formed together.
  • the glue groove 33 can be used to accommodate the structural glue 4, thereby improving the connection strength between the sleeve 3 and the connecting plate 24.
  • the depth of the glue groove is greater than or equal to 0.2mm.
  • the adhesion of the structural glue 4 between the mounting plate 32 and the connecting plate 24 can be guaranteed. Thickness (that is, the thickness of the structural glue is greater than or equal to the depth of the glue groove 33), thereby ensuring the connection strength between the mounting plate 32 and the connecting plate 24 on the sleeve 3, thereby further preventing the sleeve 3 from falling off under special working conditions. Since the glue groove 33 is provided, the mounting plate 32 and the connecting plate 24 can still be effectively bonded together when the mounting plate 43 and the connecting plate are attached at zero distance (that is, completely fitted without gap). After multiple tests, in this embodiment, a glue groove 33 is provided on the surface of the mounting plate 32, and the structural glue 4 is coated in the glue groove, so that the reverse pull-out force of the sleeve 3 can reach more than 2000N.
  • the glue groove 33 is an annular groove, and the glue groove 33 is arranged around the outer periphery of the main body portion 31 .
  • the side of the mounting plate 32 close to the main body 31 is provided with an annular protruding portion, the annular protruding portion surrounds the main body 31, and is close to the outer peripheral surface of the mounting plate 32 with the main body 31 ( That is, the outer wall of the gap section 311) forms the glue groove 33.
  • the glue groove 33 is arranged close to the main body 31 , so that the structural glue is distributed on the mounting plate 32 near the center, thereby ensuring the connection reliability between the mounting plate 32 and the connecting plate 24 of the mounting hole 241 .
  • the glue groove 33 may be a segmented arc groove surrounding the main body 31 in addition to the annular groove structure shown in FIG. 11 . In some other embodiments, the glue groove 33 may also be a plurality of grooves evenly distributed in dots on the side surface of the mounting plate 32 close to the main body 31 .

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种用于电池箱体的套筒、电池及用电装置，包括：主体部，用于与电池箱体的装配孔紧固贴合；挂载板，设置在套筒的轴线方向的一端，挂载板与主体部相连接；其中，主体部包括：间隙段，设置在主体部的轴线方向靠近挂载板的一端，间隙段与挂载板相连接，间隙段的外径小于装配孔的内径；过盈段，设置在主体部的轴线方向远离挂载板的一端，过盈段与间隙段相连接，过盈段的外径大于装配孔的内径。本申请不仅可提高套筒的反向拔脱力，防止套筒脱落，同时又可防止装配孔所在的连接板过度挤压翘曲。

Description

一种用于电池箱体的套筒、电池及用电装置
相关申请的交叉引用
本申请要求享有于2021年9月27日提交的名称为“一种用于电池箱体的套筒、电池及用电装置”的中国专利申请202122345503.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池结构技术领域，特别是涉及一种用于电池箱体的套筒、电池及用电装置。
背景技术
为了实现轻量化以及达到设计强度要求，现有技术中电池箱体广泛采用铝型材料制成。考虑电池与整车连接的可靠性及强度，电池挂载位置设计有连接套筒，该连接套筒普与电池箱体通过焊接固定连接，或连接套筒普与电池箱体通过过盈配合固定连接。
但连接套筒的焊缝热影响区域强度低，在振动、冲击等工况下易出现开裂；而过盈配合时连接套筒的反向拔脱力完全取决于过盈量大小，较大的过盈量又会导致装配孔型材面塌陷变形。因此亟需对现有的连接套筒与电池箱体的连接方案进行改进。
申请内容
为此，需要提供一种电池箱体的套筒,用于解决上述连接套筒与电池箱体连接不牢固的技术问题。
为实现上述目的，本申请提供了一种用于电池箱体的套筒，包括：
主体部，用于与电池箱体的装配孔紧固贴合；
挂载板，设置在套筒的轴线方向的一端，挂载板与主体部相连接；
其中，主体部包括：
间隙段，设置在主体部的轴线方向靠近挂载板的一端，间隙段与挂载板相连接，间隙段的外径小于装配孔的内径；
过盈段，设置在主体部的轴线方向远离挂载板的一端，过盈段与间隙段相连接，过盈段的外径大于装配孔的内径。
上述技术方案中，电池箱体的套筒的主体部包括有间隙段和过盈段，其中，间隙段的外径小于装配孔的内径，过盈段的外径大于装配孔的内径，主体部通过过盈段和间隙段与装配孔配合，即可提高反向拔脱力，防止套筒脱落，同时又可防止装配孔所在的型材过度挤压翘曲。
进一步的，主体部还包括导向段；
导向段设置在主体部远离挂载板的一端，导向段与过盈段相连接，沿远离过盈段的方向导向段的外径逐渐变小。
上述技术方案中，导向段沿远离过盈段的方向导向段的外径逐渐变小，从而便于套筒与装配孔对准和插入。
进一步的，导向段末端的外径比装配孔的内径小0.1mm～0.2mm。
上述技术方案中，便于套筒与装配孔对准和插入。
进一步的，挂载板设置有胶槽，胶槽位于挂载板靠近主体部的一侧的表面。
上述技术方案中，挂载板设置有胶槽，胶槽内用于涂覆结构胶，将挂载板与装配孔所在的型材连接，提高套筒的连接强度。
进一步的，胶槽为环形凹槽，且环绕主体部设置。
上述技术方案中，胶槽为环形凹槽，且环绕主体部，可使结构胶环绕主体部涂覆，结构胶分布更均匀和合理，可保证挂载板与装配孔所在的型材的连接可靠性。
进一步的，挂载板靠近主体部的一侧设置有环形凸出部，环形凸出部环 绕主体部，且与主体部靠近挂载板的外周面形成胶槽。
上述技术方案中，胶槽靠近主体部设置，从而使结构胶在挂载板上靠近中心分布，可保证挂载板与装配孔所在的连接板的连接可靠性。
进一步的，胶槽的深度大于或等于0.2mm。
上述技术方案中，胶槽的深度大于或等于0.2mm可保证挂载板与装配孔所在的型材的连接强度。
为解决上述技术问题，本申请还提供了另一技术方案：
一种电池，包括：
多个电池单体；
电池箱体，用于容纳多个电池单体；电池箱体包括：
连接板，与电池的箱体连接用于挂载电池箱体，连接板上设置有装配孔；
套筒，套筒为以上任一技术方案的套筒；主体部与装配孔连接。
上述技术方案中，电池箱体包括和和套筒，套筒的主体部包括有间隙段和过盈段，其中，间隙段的外径小于装配孔的内径，过盈段的外径大于装配孔的内径，主体部通过过盈段和间隙段与装配孔配合，即可提高反向拔脱力，防止套筒脱落，同时又可防止装配孔所在的型材过度挤压翘曲。
进一步的，连接板与挂载板之间设置有胶层，胶层连接连接板和挂载板。
上述技术方案中，胶层可提高连接板与挂载板之间的连接强度。
为解决上述技术问题，本申请还提供了另一技术方案：
一种用电装置，用电装置包括以上任一技术方案的电池，电池用于提供电能。
区别于现有技术，上述技术方案提供了用于电池箱体的套筒、电池及用电装置，其中，电池箱体的套筒的主体部包括有间隙段和过盈段，其中，间隙段的外径小于装配孔的内径，过盈段的外径大于装配孔的内径，主体部通 过过盈段和间隙段与装配孔配合，不仅可提高套筒的反向拔脱力，防止套筒脱落，同时又可防止装配孔所在的连接板过度挤压翘曲。
附图说明
图1为本申请一实施例公开的一种车辆的局部结构示意图；
图2为本申请一实施例公开的一种电池的结构示意图；
图3为本申请一实施例公开的一种电池箱体的结构示意图；
图4为本申请一实施例公开的一种电池单体的结构示意图；
图5为本申请一实施例公开的一种套筒与连接板配合关系的示意图；
图6为本申请一实施例公开的套筒与连接板上的装配孔装配好的示意图；
图7为本申请一实施例公开的一种套筒与连接板装配好的剖视图；
图8为本申请一实施例公开的一种套筒的主视图；
图9为本申请一实施例公开的一种套筒的轴视图；
图10为图11中沿A-A向的剖视图。
图11为本申请一实施例公开的一种套筒的主体部朝向视角的示意图；
图12为图7中A部分的局部放大图；
附图标记说明：
100、控制器；
200、电池；
300、电机；
21、电池模组；
22、电池箱体；
23、箱盖；
24、连接板；
241、装配孔；
242、外层板；
243、中层板；
1、电池单体；
11、电池壳体；
12、端盖；
13、电极组件；
14、电极端子；
15、密封钉；
121、注液孔；
122、防爆阀；
3、套筒；
31、主体部；
32、挂载板；
33、胶槽；
311、间隙段；
312、过盈段；
313、导向段；
4、结构胶。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示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。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
在现有技术中，连接套筒与连接板通过过盈配合压接时，连接套筒的反向拔脱力大小完全取决于过盈量大小，然而较大的过盈量又会导致连接板接触部的型材面塌陷变形，而较小的过盈量会导致衬套的反向拔脱力过小(100N～1000N)，达不到设计要求，且易出现以下问题：
1)运输过程连接套筒脱落；
2)吊装工况时连接套筒脱落；
3)因过盈段过长，过盈压接完成后，连接板接触部的型材面会发生回弹，导致连接套筒主体部下端与连接板触面形成较大间隙(＞0.5mm)，存在连接套筒与连接面锁附不牢的风险。
基于申请人发现的上述问题，申请人对电池箱体的套筒进行了改进，在套筒的主体部设置了间隙段、过盈段和导向段，套筒与装配孔压接后，主体部与装配孔的配合段为间隙段(间隙段高度配合型材壁厚设计)，过盈段在型材面以下。其中过盈段可保证套筒反向拔脱力，并且间隙段可有效降低连接板回弹而导致的套筒与连接板表面的间隙增大。并且，通过套筒的挂载板与连接板之间通过结构胶粘接，从而进一步提高反向拔脱力，保证了电池箱体在运输过程和吊装工况中，套筒不出现脱落。
下面对本申请实施例进行进一步描述。
本申请实施例提供了一种使用电池200作为电源的用电装置。该用电装置可以但不仅限于为车辆、船舶或飞行器等。参见图1所示，电池200可以用于为车辆供电，电池200设置有多个电池模组21。车辆可以为燃油汽车、燃气汽车或新能源汽车。新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。在本申请一实施例中，车辆可以包括电机300、控制器100以及电池200。控制器100用来控制电池200为电机300供电。电机300通过传动机构与车轮连接，从而驱动车辆行进。电池200可以作为车辆的驱动电源，替代或部分地替代燃油或天然气为车辆提供驱动动力。在一个示例中，在车辆的底部或车头或车尾可以设置电池200。电池200可以用于为车辆供电。
参见图2所示，本申请实施例提供了一种电池200，多个电池模组21可连接形成电池200，每个电池模组21内可设置有多个电池单体1。电池200包括电池箱体22，电池箱体22的形状不受限制。电池箱体22可为框状箱体、盘状箱体或盒状箱体等。示例性地，电池箱体22包括箱盖23，箱盖23盖合的电池箱体22上。电池箱体22和箱盖23盖合后形成容纳部，电池箱体22和箱盖23盖合后可通过螺栓等紧固件锁紧固定。如图2所示，电池200内设置有多个电池模组21，该电池模组21设置于箱体的容纳部内。电池模组21包括多个电池单体1，多个电池单体1可以通过串联或并联或混联的方式电连接。
在一些实施例中，为了满足不同使用情况下的电力需求，电池200可以包括多个电池单体1，其中，多个电池单体1之间可以串联或并联或混联，混联是指既有串联又有并联的连接方式。也就是说，多个电池单体1可以直接设置于箱体的容纳部内以组成电池200。
参阅图3所示，电池箱体22的两侧设置有连接板24，连接板24可选用与电池箱体22相同的金属材质制成，连接板24可通过焊接或螺栓连接等方式与电池箱体22的主体结构固定连接。电池200可通过连接板24挂载于车辆、飞机等用电设备上。连接板24上设置有多个套筒3，套筒3与连接板24 固定连接，电池200挂载时，可通过螺栓、铆钉等紧固件穿过套筒3将电池200挂载于用电设备上。
参阅图4所示，为本申请实施例提供了电池单体，电池单体1包括电池壳体11、端盖12以及设置于电池壳体11内的电极组件13。本申请实施例的电池壳体11为长方体结构或其他结构。电池壳体11具有容纳电极组件13和电解液的内部空间以及与内部空间相连通的开口，端盖12与开口相适配。电池壳体11和端盖12可以由例如铝、铝合金或塑料等材料制造。端盖12上设置有注液孔121、防爆阀122以及两个电极端子14，其中一个电极端子14为正极端子，另一个电极端子14为负极端子，注液孔121上设置有密封钉15。
本申请实施例的电极组件13可通过将第一极片、第二极片以及隔膜一同堆叠或卷绕形成，其中，隔膜是介于第一极片和第二极片之间的绝缘体。在本实施例中，示例性地以第一极片为正极片，第二极片为负极片进行说明。正极片和负极片均包括涂覆区和未涂覆区。正极片活性物质被涂覆在正极片的涂覆区上，而负极片活性物质被涂覆在负极片的涂覆区上。在涂覆区上，活性物质被涂覆在由金属薄板形成的集流体上，在未涂覆区上没有涂覆活性物质。正极片的未涂覆区形成正极耳，而负极片的未涂覆区形成负极耳。电极组件13包括主体部、正极耳以及负极耳，正极耳和负极耳分别从主体部的一个端部上延伸而成，正极耳通过导电连接件与其中一个电极端子14连接，负极耳通过另一导电连接件与另一电极端子14连接。其中，正极耳和负极耳可以位于主体部的一端，也可以分别位于主体部的两端。
请参阅图5至图12所示，在实施例中提供了一种用于电池箱体22的套筒3。其中，在与电池箱体22连接的连接板24上设置有装配孔241，其中，装配孔241可以具有多个，多个装配孔241沿电池箱体22的外周间隔设置，装配孔241可以为通孔，套筒3与装配孔241连接。如图6所示，为套筒3与连接板24上的装配孔241装配好的示意图，图7为套筒3与连接板24装配好的剖视图。其中，连接板24可以为中空多层板，连接板24包括外层板 242、和中层板243，其中，装配孔241至少贯穿外层板242，套筒3的主体部31从外层板242外侧插入装配孔241，并且主体部31的末端与中层板243相抵。为了方便操作，在中层板243上设置有与装配孔241位于同一轴线的操作孔，通过操作孔可供挂载紧固件穿过以及进行挂载等安装操作。
结合图8所示，套筒3包括了主体部31和挂载板32(即法兰板)，套筒3可以采用、铝合金、钢、铁等硬质金属或合金制成。其中，主体部31和挂载板32相连接，主体部31和挂载板32可以通过焊接固定在一起，或主体部31和挂载板32通过压铸、冲压、浇铸等一体成型工艺制成。
主体部31用于与电池箱体22的连接板24上的装配孔241紧固贴合；主体部31可以中空的圆形管状结构，从而方便螺栓等紧固件通过。
挂载板32设置在套筒3的轴线方向的一端，挂载板32与主体部31的一端相连接，从而形成T字形结构。
如图9所示，其中，主体部31包括：间隙段311和过盈段312。
间隙段311设置在主体部31的轴线方向靠近挂载板32的一端，间隙段311与挂载板32相连接，间隙段311的外径小于装配孔241的内径。
过盈段312设置在主体部31的轴线方向远离挂载板32的一端，过盈段312与间隙段311相连接(即过盈段312与间隙段311在主体部31上相邻设置)，过盈段312的外径大于装配孔241的内径。
在套筒3与装配孔241装配时，主体部31插入装配孔241，主体部31上的过盈段穿过装配孔241，且使间隙段311卡接于装配孔241内，挂载板32位于装配孔241外与装配孔241处的连接板24的表面贴合。
在一些实施例中，间隙段311的外径等于装配孔241的内径-(0～0.2mm)，即间隙段311的外径比装配孔241的内径小0～0.2mm。过盈段312的外径等于装配孔241的内径+0.05～0.2mm)，即过盈段312的外径比装配孔241的内径大0.05～0.2mm。
参阅图10所示，其中L1为主体部31的长度，L2为间隙段311的长度， L3为过盈段312的长度。其中，间隙段311的长度L2可以根据装配孔241的厚度(连接板24在装配孔241所在处的厚度)而调整，间隙段311的长度L2应略大于装配孔241的厚度，从而使装配孔241的内壁正好位于间隙段311内。
在上述实施方式中，套筒3的间隙段311的外径小于装配孔241的内径，过盈段312的外径大于装配孔241的内径，主体部31通过过盈段312和间隙段311与装配孔241配合，不仅可提高套筒3反向拔脱力，防止套筒3脱落，同时又可防止装配孔241所在的连接板过度挤压翘曲，以及避免连接板24翘曲回弹导致的连接板24与挂载板32之间的间隙增大。通过上述实施例可以使连接板24与挂载板32之间的间隙可控制在0～0.3mm之间，从而消除套筒3与连接板24锁附压溃的风险。
请参阅图9和图10所示，在一实施例中，主体部31还包括导向段313。其中，导向段313设置在主体部31远离挂载板32的一端，导向段313与过盈段312相连接(即导向段313与过盈段312相邻设置)，并且沿远离过盈段312的方向导向段313的外径逐渐变小，即从靠近过盈段312的位置向远离过盈段312的位置，导向段313的外径逐渐减小，导向段313靠近过盈段312的一端为大端(外径较大)，导向段313远离过盈段312的一端为小端(外径较小)。在一实施例中，导向段313远离过盈段312的一端(即小端面)的外径＝装配孔241的外径-(0.1～0.2mm)，从而使导向段313末端外径小于装配孔241的内径，从而便于套筒3的主体部31与装配孔241对准以及顺利压入。
参阅图11所示，在一实施例中，套筒3还设置有胶槽33，胶槽33设置于挂载板32上，具体的，胶槽33位于挂载板32靠近主体部31的一侧的表面，即胶槽33位于挂载板32的表面与连接板24表面之间。
胶槽33可以是通过铣削等方式在挂载板32靠近主体部31的一侧的表面加工出的凹槽，或者胶槽33可以是在生产套筒3时通过一体成型工艺与挂载板32一同形成的。胶槽33可用于容纳结构胶4，从而提高套筒3与连接板 24的连接强度。优选的，胶槽的深度大于或等于0.2mm。
相对于没有设置胶槽直接在挂载板32的表面与连接板24表面之间涂覆结构胶4，设置有胶槽33后，可保证挂载板32与连接板24之间结构胶4的厚度(即结构胶的厚度大于或等于胶槽33的深度)，从而保证套筒3上的挂载板32与连接板24的连接强度，从而进一步避免套筒3在特殊工况下脱落。由于设置有胶槽33，可以确保挂载板43与连接板零距离贴合(即完全贴合，无间隙)的情况下，挂载板32与连接板24仍能有效粘接在一起。经多次测试，在该实施例中，在挂载板32的表面设置胶槽33，并在胶槽内涂覆结构胶4可以套筒3的反向拔脱力达到2000N以上。
如图11所示，在一实施例中，胶槽33为环形凹槽，胶槽33环绕主体部31的外周设置。
进一步的，如图12所示，挂载板32靠近主体部31的一侧设置有环形凸出部，环形凸出部环绕主体部31，且与主体部31靠近挂载板32的外周面(即间隙段311的外壁)形成胶槽33。
在该实施方式中，胶槽33靠近主体部31设置，从而使结构胶在挂载板32上靠近中心分布，因此可保证挂载板32与装配孔241连接板24的连接可靠性。
在另一些实施例中，胶槽33除了采用图11所示的环形凹槽结构，还可以为环绕主体部31的分段式弧形槽。在另一些实施例中，胶槽33也可以为点状均匀分布于挂载板32靠近主体部31的一侧表面的多个凹槽。
需要说明的是，尽管在本文中已经对上述各实施例进行了描述，但并非因此限制本申请的专利保护范围。因此，基于本申请的创新理念，对本文实施例进行的变更和修改，或利用本申请说明书及附图内容所作的等效结构或等效流程变换，直接或间接地将以上技术方案运用在其他相关的技术领域，均包括在本申请的专利保护范围之内。

Claims (15)

  1. 一种用于电池箱体的套筒，其特征在于，包括：
    主体部，用于与所述电池箱体的装配孔紧固贴合；
    挂载板，设置在所述套筒的轴线方向的一端，所述挂载板与所述主体部相连接；
    其中，所述主体部包括：
    间隙段，设置在所述主体部的轴线方向靠近所述挂载板的一端，所述间隙段与所述挂载板相连接，所述间隙段的外径小于所述装配孔的内径；
    过盈段，设置在所述主体部的轴线方向远离所述挂载板的一端，所述过盈段与所述间隙段相连接，所述过盈段的外径大于所述装配孔的内径。
  2. 根据权利要求1所述的用于电池箱体的套筒，其特征在于，所述主体部还包括导向段；
    所述导向段设置在所述主体部远离所述挂载板的一端，所述导向段与所述过盈段相连接，沿远离所述过盈段的方向所述导向段的外径逐渐变小。
  3. 根据权利要求2所述的用于电池箱体的套筒，其特征在于，所述导向段末端的外径比所述装配孔的内径小0.1mm～0.2mm。
  4. 根据权利要求1所述的用于电池箱体的套筒，其特征在于，所述挂载板设置有胶槽，所述胶槽位于所述挂载板靠近所述主体部的一侧的表面。
  5. 根据权利要求4所述的用于电池箱体的套筒，其特征在于，所述胶槽为环形凹槽，且环绕所述主体部设置。
  6. 根据权利要求5所述的用于电池箱体的套筒，其特征在于，所述挂载板靠近所述主体部的一侧设置有环形凸出部，所述环形凸出部环绕所述主体部，且与所述主体部靠近所述挂载板的外周面形成所述胶槽。
  7. 根据权利要求4至6任一所述的用于电池箱体的套筒，其特征在于，所述胶槽的深度大于或等于0.2mm。
  8. 一种电池，其特征在于，包括：
    多个电池单体；
    电池箱体，用于容纳所述多个电池单体；所述电池箱体包括：
    连接板，与所述电池的箱体连接用于挂载所述电池箱体，所述连接板上设置有所述装配孔；
    套筒，所述套筒为权利要求1-7任一所述的套筒；所述主体部与所述装配孔连接。
  9. 根据权利要求8所述的电池，其特征在于，所述连接板与所述挂载板之间设置有胶层，所述胶层连接所述连接板和所述挂载板。
  10. 根据权利要求8所述的电池，其特征在于，所述装配孔为多个装配孔，所述多个装配孔沿所述电池箱体的外周间隔设置。
  11. 根据权利要求8所述的电池，其特征在于，所述连接板包括外层板和中层板。
  12. 根据权利要求11所述的电池，其特征在于，所述装配孔至少贯穿所述外层板，所述套筒的所述主体部从所述外层板外侧插入所述装配孔，并且所述主体部的末端与所述中层板相抵。
  13. 根据权利要求8所述的电池，其特征在于，在所述套筒与所述装配孔装配时，所述主体部插入所述装配孔。
  14. 根据权利要求13所述的电池，其特征在于，所述套筒的所述间隙段的外径小于所述装配孔的内径，所述过盈段的外径大于所述装配孔的内径。
  15. 一种用电装置，其特征在于，所述用电装置包括权利要求8-14任一项所述的电池，所述电池用于提供电能。
PCT/CN2022/101781 2021-09-27 2022-06-28 一种用于电池箱体的套筒、电池及用电装置 WO2023045461A1 (zh)

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CN216015581U (zh) * 2021-09-27 2022-03-11 宁德时代新能源科技股份有限公司 一种用于电池箱体的套筒、电池及用电装置
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