CN216015581U - Sleeve for battery box body, battery and power utilization device - Google Patents

Sleeve for battery box body, battery and power utilization device Download PDF

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Publication number
CN216015581U
CN216015581U CN202122345503.0U CN202122345503U CN216015581U CN 216015581 U CN216015581 U CN 216015581U CN 202122345503 U CN202122345503 U CN 202122345503U CN 216015581 U CN216015581 U CN 216015581U
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CN
China
Prior art keywords
main body
battery
sleeve
section
hanging
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Active
Application number
CN202122345503.0U
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Chinese (zh)
Inventor
王勇
杨辉
王庆
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Priority to CN202122345503.0U priority Critical patent/CN216015581U/en
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Publication of CN216015581U publication Critical patent/CN216015581U/en
Priority to PCT/CN2022/101781 priority patent/WO2023045461A1/en
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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

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

Abstract

The utility model discloses a sleeve, battery and power consumption device for battery box, include: the main body part is used for being tightly attached to the assembly hole of the battery box body; the hanging and carrying plate is arranged at one end of the sleeve in the axial direction and is connected with the main body part; wherein, the main part includes: the gap section is arranged at one end of the main body part close to the hanging and carrying plate in the axis direction, the gap section is connected with the hanging and carrying plate, and the outer diameter of the gap section is smaller than the inner diameter of the assembling hole; the interference section is arranged at one end, far away from the hanging support plate, of the axis direction of the main body part and connected with the clearance section, and the outer diameter of the interference section is larger than the inner diameter of the assembling hole. The utility model discloses not only can improve telescopic reverse pull out power, prevent that the sleeve from droing, can prevent the excessive extrusion warpage of connecting plate at pilot hole place again simultaneously.

Description

Sleeve for battery box body, battery and power utilization device
Technical Field
The utility model relates to a battery structure technical field especially relates to a sleeve, battery and power consumption device for battery box.
Background
In order to achieve light weight and meet the design strength requirement, the battery box body in the prior art is widely made of aluminum type materials. Considering reliability and strength of connection between the battery and the whole vehicle, the battery mounting position is designed with a connecting sleeve, and the connecting sleeve is generally fixedly connected with the battery box body through welding or fixedly connected with the battery box body through interference fit.
But the strength of a weld heat affected zone of the connecting sleeve is low, and the connecting sleeve is easy to crack under working conditions of vibration, impact and the like; and the reverse pull-out force of the connecting sleeve during interference fit completely depends on the magnitude of interference magnitude, and the larger interference magnitude can cause the face of the hole-assembling section to collapse and deform. There is therefore a need for an improved connection of a connecting sleeve to a battery case.
SUMMERY OF THE UTILITY MODEL
Therefore, a sleeve of the battery box needs to be provided for solving the technical problem that the connection between the connecting sleeve and the battery box is not firm.
In order to achieve the above object, the present invention provides a sleeve for a battery box, including:
the main body part is used for being tightly attached to the assembly hole of the battery box body;
the hanging and carrying plate is arranged at one end of the sleeve in the axial direction and is connected with the main body part;
wherein, the main part includes:
the gap section is arranged at one end of the main body part close to the hanging and carrying plate in the axis direction, the gap section is connected with the hanging and carrying plate, and the outer diameter of the gap section is smaller than the inner diameter of the assembling hole;
the interference section is arranged at one end, far away from the hanging support plate, of the axis direction of the main body part and connected with the clearance section, and the outer diameter of the interference section is larger than the inner diameter of the assembling hole.
Among the above-mentioned technical scheme, the telescopic main part of battery box is including gapped section and interference section, and wherein, the external diameter of clearance section is less than the internal diameter of pilot hole, and the external diameter of interference section is greater than the internal diameter of pilot hole, and the main part passes through interference section and clearance section and pilot hole cooperation, can improve reverse pull-out power, prevents that the sleeve from droing, can prevent the excessive extrusion warpage of section bar at pilot hole place again simultaneously.
Further, the main body part also comprises a guide section;
the guide section is arranged at one end of the main body part far away from the hanging support plate, the guide section is connected with the interference section, and the outer diameter of the guide section gradually decreases along the direction far away from the interference section.
Among the above-mentioned technical scheme, the external diameter of direction section of leading along keeping away from the interference section diminishes gradually to be convenient for sleeve and pilot hole aim at and insert.
Furthermore, the outer diameter of the tail end of the guide section is 0.1-0.2 mm smaller than the inner diameter of the assembly hole.
In the technical scheme, the sleeve and the assembling hole can be conveniently aligned and inserted.
Further, the mounting plate is provided with a glue groove, and the glue groove is located on the surface of one side, close to the main body part, of the mounting plate.
Among the above-mentioned technical scheme, the carry board is provided with gluey groove, glues the inslot and is used for the coating structure to glue, will carry the board and be connected with the section bar at pilot hole place, improves telescopic joint strength.
Further, the glue groove is an annular groove and is arranged around the main body part.
Among the above-mentioned technical scheme, gluey groove is the annular groove, and encircles the main part, can make the structure glue encircle the main part coating, and the distribution is glued more evenly and rationally to the structure, can guarantee to hang the reliability of being connected of the section bar at support plate and pilot hole place.
Furthermore, one side of the hanging plate close to the main body part is provided with an annular protruding part which surrounds the main body part, and a glue groove is formed on the outer peripheral surface of the hanging plate close to the main body part.
Among the above-mentioned technical scheme, the gluey groove is close to the main part setting to make the structure glue be close to the central distribution on the hanging plate, can guarantee the connection reliability of hanging the connecting plate at support plate and pilot hole place.
Further, the depth of the glue groove is greater than or equal to 0.2 mm.
Among the above-mentioned technical scheme, the degree of depth of gluing the groove is more than or equal to 0.2mm can guarantee to hang the joint strength of support plate and the section bar at pilot hole place.
In order to solve the above technical problem, the present application further provides another technical solution:
a battery, comprising:
a plurality of battery cells;
the battery box body is used for accommodating a plurality of battery monomers; the battery box includes:
the connecting plate is connected with the battery box body and used for mounting the battery box body, and an assembling hole is formed in the connecting plate;
the sleeve is the sleeve of any one of the technical schemes; the main body part is connected with the assembly hole.
Among the above-mentioned technical scheme, the battery box include with the sleeve, telescopic main part is including gapped section and interference section, and wherein, the external diameter of clearance section is less than the internal diameter of pilot hole, and the external diameter of interference section is greater than the internal diameter of pilot hole, and the main part passes through interference section and clearance section and pilot hole cooperation, can improve reverse pull-out power, prevents that the sleeve from droing, can prevent the excessive extrusion warpage of section bar at pilot hole place again simultaneously.
Furthermore, a glue layer is arranged between the connecting plate and the hanging plate and is connected with the connecting plate and the hanging plate.
Among the above-mentioned technical scheme, the glue film can improve the joint strength between connecting plate and the carry board.
In order to solve the above technical problem, the present application further provides another technical solution:
an electric device comprises the battery of any one of the technical schemes, and the battery is used for providing electric energy.
Be different from prior art, above-mentioned technical scheme provides a sleeve, battery and power consumption device for battery box, and wherein, the telescopic main part of battery box is including gapped section and interference section, and wherein, the external diameter of clearance section is less than the internal diameter of pilot hole, and the external diameter of interference section is greater than the internal diameter of pilot hole, and the main part passes through interference section and clearance section and pilot hole cooperation, not only can improve telescopic reverse pull-out power, prevents that the sleeve from droing, can prevent the excessive extrusion warpage of connecting plate at pilot hole place again simultaneously.
Drawings
FIG. 1 is a schematic illustration of a partial structure of a vehicle according to an embodiment of the present disclosure;
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 according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a sleeve and a connecting plate in a mating relationship according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of the sleeve assembled with the mounting hole of the connection plate according to an embodiment of the present disclosure;
FIG. 7 is a cross-sectional view of an assembled sleeve and web according to one embodiment of the present disclosure;
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 according to an embodiment of the present disclosure;
fig. 10 is a sectional view taken along a-a in fig. 11.
FIG. 11 is a schematic view of a body portion of a sleeve according to an embodiment of the present disclosure;
FIG. 12 is a partial enlarged view of portion A of FIG. 7;
description of reference numerals:
100. a controller;
200. a battery;
300. a motor;
21. a battery module;
22. a battery case;
23. a box cover;
24. a connecting plate;
241. an assembly hole;
242. an outer plate;
243. a middle layer plate;
1. a battery cell;
11. a battery case;
12. an end cap;
13. an electrode assembly;
14. an electrode terminal;
15. sealing the nail;
121. a liquid injection hole;
122. an explosion-proof valve;
3. a sleeve;
31. a main body portion;
32. hanging a support plate;
33. a glue groove;
311. a gap section;
312. an interference section;
313. a guide section;
4. structural adhesive;
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments. In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.
In the prior art, when the connecting sleeve is in interference fit compression joint with the connecting plate, the reverse pull-out force of the connecting sleeve is completely determined by the magnitude of interference, however, the larger interference can cause the section bar surface of the contact part of the connecting plate to collapse and deform, and the smaller interference can cause the reverse pull-out force of the bush to be too small (100N-1000N), so that the design requirement cannot be met, and the following problems are easy to occur:
1) the connecting sleeve falls off in the transportation process;
2) the connecting sleeve falls off under the hoisting working condition;
3) because of the interference section overlength, after the interference crimping was accomplished, the section bar face of connecting plate contact site can take place to kick-back, leads to connecting sleeve main part lower extreme and connecting plate contact surface to form great clearance (> 0.5mm), has connecting sleeve and the risk of connecting the face lock and attach insecure.
Based on the above problems discovered by the applicant, the applicant improves the sleeve of the battery box body, the main body part of the sleeve is provided with a gap section, an interference section and a guide section, after the sleeve is in compression joint with the assembly hole, the matching section of the main body part and the assembly hole is the gap section (the gap section is highly matched with the wall thickness of the section), and the interference section is below the surface of the section. Wherein the interference section can guarantee the reverse power of pulling out of sleeve to the clearance section can effectively reduce the clearance increase on sleeve and connecting plate surface that the connecting plate kick-backs and lead to. And, bond through the structure glue between telescopic carry board and the connecting plate to further improve reverse pull-out power, guaranteed that the battery box is in transportation and hoist and mount operating mode, the sleeve does not appear droing.
The examples of the present application are further described below.
The embodiment of the present application provides an electric device using the battery 200 as a power source. The electric device can be, but is not limited to, a vehicle, a ship, an aircraft or the like. Referring to fig. 1, a battery 200 may be used to power a vehicle, and the battery 200 is provided with a plurality of battery modules 21. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. In an embodiment of the present application, 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, thereby driving the vehicle to travel. The battery 200 may be used as a driving power source for a vehicle instead of or in part instead of fuel or natural gas to provide driving power for the vehicle. In one example, the battery 200 may be provided at the bottom or the front or rear of the vehicle. The battery 200 may be used to power a vehicle.
Referring to fig. 2, in the present embodiment, a battery 200 is provided, a plurality of battery modules 21 may be connected to form the battery 200, and a plurality of battery cells 1 may be disposed in each battery module 21. The battery 200 includes a battery case 22, and the shape of the battery case 22 is not limited. The battery case 22 may be a frame-shaped case, a disk-shaped case, a box-shaped case, or the like. Illustratively, the battery case 22 includes a case cover 23, and the case cover 23 covers the battery case 22. The battery case 22 and the case cover 23 are closed to form a receiving portion, and the battery case 22 and the case cover 23 are closed and fastened by a fastener such as a bolt. As shown in fig. 2, a plurality of battery modules 21 are provided in the battery 200, and the battery modules 21 are provided in the housing portion of the case. The battery module 21 includes a plurality of battery cells 1, and the plurality of battery cells 1 may be electrically connected in series or in parallel or in series-parallel.
In some embodiments, in order to meet the power requirements under different use conditions, the battery 200 may include a plurality of battery cells 1, wherein the plurality of battery cells 1 may be connected in series or in parallel or in series-parallel, and the series-parallel refers to a connection manner that is both series and parallel. That is, a plurality of battery cells 1 may be directly disposed in the receiving portion of the case to constitute the battery 200.
Referring to fig. 3, the battery case 22 is provided with connecting plates 24 at two sides thereof, the connecting plates 24 may be made of the same metal material as the battery case 22, and the connecting plates 24 may be fixedly connected to the main structure of the battery case 22 by welding or bolting. The battery 200 can be mounted on a vehicle, an airplane, or other electrical equipment via the connection plate 24. The connecting plate 24 is provided with a plurality of sleeves 3, the sleeves 3 are fixedly connected with the connecting plate 24, and when the battery 200 is mounted, fasteners such as bolts and rivets can penetrate through the sleeves 3 to mount the battery 200 on electric equipment.
Referring to fig. 4, a single battery cell is provided for the embodiment of the present application, and the single battery cell 1 includes a battery case 11, an end cap 12, and an electrode assembly 13 disposed in the battery case 11. The battery case 11 of the embodiment of the present application has a rectangular parallelepiped structure or another structure. The battery case 11 has an inner space accommodating the electrode assembly 13 and the electrolyte and an opening communicating with the inner space, and the end cap 12 is fitted to the opening. The cell housing 11 and the end cap 12 may be made of a material 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, wherein one electrode terminal 14 is a positive electrode terminal, the other electrode terminal 14 is a negative electrode terminal, and the liquid injection hole 121 is provided with a sealing nail 15.
The electrode assembly 13 of the embodiment of the present application may be formed by stacking or winding a first pole piece, a second pole piece, and a separator together, wherein the separator is an insulator interposed between the first pole piece and the second pole piece. In this embodiment, the first electrode tab is exemplarily described as a positive electrode tab, and the second electrode tab is exemplarily described as a negative electrode tab. Both the positive electrode tab and the negative electrode tab include a coated region and an uncoated region. The positive electrode tab active material is coated on the coating region of the positive electrode tab, and the negative electrode tab active material is coated on the coating region of the negative electrode tab. On the coated region, the active material is coated on a current collector formed of a metal thin plate, and on the uncoated region, the active material is not coated. The uncoated region of the positive electrode sheet forms the positive electrode tab, and the uncoated region of the negative electrode sheet forms the negative electrode tab. The electrode assembly 13 includes a main body portion, a positive electrode tab and a negative electrode tab, the positive electrode tab and the negative electrode tab are respectively formed by extending from one end portion of the main body portion, the positive electrode tab is connected to one of the electrode terminals 14 through a conductive connecting member, and the negative electrode tab is connected to the other electrode terminal 14 through another conductive connecting member. The positive electrode tab and the negative electrode tab can be positioned at one end of the main body part or can be respectively positioned at two ends of the main body part.
Referring to fig. 5 to 12, in the embodiment, a sleeve 3 for a battery case 22 is provided. Wherein, the connection plate 24 connected with the battery case 22 is provided with a plurality of fitting holes 241, wherein the fitting holes 241 may be provided at intervals along the outer circumference of the battery case 22, the fitting holes 241 may be through holes, and the sleeve 3 is connected with the fitting holes 241. As shown in fig. 6, which is a schematic view illustrating the sleeve 3 assembled with the fitting hole 241 of the connection plate 24, fig. 7 is a sectional view illustrating the sleeve 3 assembled with the connection plate 24. The connection plate 24 may be a hollow multi-layer plate, and the connection plate 24 includes an outer layer plate 242 and a middle layer plate 243, wherein the fitting hole 241 penetrates at least the outer layer plate 242, the main body portion 31 of the sleeve 3 is inserted into the fitting hole 241 from the outside of the outer layer plate 242, and the end of the main body portion 31 abuts against the middle layer plate 243. For convenience of operation, the middle plate 243 is provided with an operation hole which is coaxial with the assembly hole 241, and a mounting fastener can pass through the operation hole and can be mounted.
Referring to fig. 8, the sleeve 3 includes a main body 31 and a mounting plate 32 (i.e., a flange plate), and the sleeve 3 may be made of hard metal or alloy such as aluminum alloy, steel, iron, etc. The main body 31 and the mounting plate 32 are connected, 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 are manufactured by an integral molding process such as die casting, stamping, casting, etc.
The main body 31 is fastened and attached to the attachment hole 241 of the connection plate 24 of the battery case 22; the body portion 31 may be of a hollow, circular tubular configuration to facilitate passage of fasteners such as bolts.
The mounting plate 32 is provided at one end of the liner 3 in the axial direction, and the mounting plate 32 is connected to one end of the main body 31 to form a T-shaped structure.
As shown in fig. 9, the main body 31 includes: a clearance section 311 and an interference section 312.
The gap section 311 is disposed at one end of the main body 31 close to the mounting plate 32 in the axial direction, 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 disposed at an end of the main body 31 away from the hook plate 32 in the axial direction, the interference section 312 is connected to the gap section 311 (i.e., the interference section 312 and the gap section 311 are disposed adjacent to each other on the main body 31), and an outer diameter of the interference section 312 is greater than an inner diameter of the fitting hole 241.
When the sleeve 3 is assembled with the assembling hole 241, the main body 31 is inserted into the assembling hole 241, the interference section on the main body 31 passes through the assembling hole 241, the gap section 311 is clamped in the assembling hole 241, and the hanging-carrying plate 32 is located outside the assembling hole 241 and attached to the surface of the connecting plate 24 at the assembling hole 241.
In some embodiments, the outer diameter of the clearance section 311 is equal to the inner diameter of the fitting hole 241- (0 to 0.2mm), i.e., the outer diameter of the clearance section 311 is 0 to 0.2mm 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 assembling hole 241 plus 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 assembling hole 241.
Referring to fig. 10, wherein L1 is the length of the main body 31, L2 is the length of the gap section 311, and L3 is the length of the interference section 312. Wherein, the length L2 of the gap section 311 can be adjusted according to the thickness of the mounting hole 241 (the thickness of the connecting plate 24 at the mounting hole 241), the length L2 of the gap section 311 should be slightly larger than the thickness of the mounting hole 241, so that the inner wall of the mounting hole 241 is located right inside the gap section 311.
In the above embodiment, 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, and the main body portion 31 is matched with the fitting hole 241 through the interference section 312 and the gap section 311, so that the reverse pulling-out force of the sleeve 3 can be improved, the sleeve 3 can be prevented from falling off, the excessive extrusion and warping of the connecting plate where the fitting hole 241 is located can be prevented, and the gap between the connecting plate 24 and the mounting plate 32 caused by the warping and rebounding of the connecting plate 24 can be avoided from increasing. Through the embodiment, the gap between the connecting plate 24 and the mounting plate 32 can be controlled to be 0-0.3 mm, so that the risk of the locking and crushing of the sleeve 3 and the connecting plate 24 is eliminated.
Referring to fig. 9 and 10, in one embodiment, the main body 31 further includes a guide section 313. The guide section 313 is disposed at one end of the main body 31 away from the hooking plate 32, the guide section 313 is connected to the interference section 312 (that is, the guide section 313 is disposed adjacent to the interference section 312), and the outer diameter of the guide section 313 gradually decreases along a direction away from the interference section 312, that is, the outer diameter of the guide section 313 gradually decreases from a position close to the interference section 312 to a position away from the interference section 312, the end of the guide section 313 close to the interference section 312 is a large end (the outer diameter is large), and the end of the guide section 313 away from the interference section 312 is a small end (the outer diameter is small). In an embodiment, an outer diameter of one end (i.e., a small end surface) of the guide section 313 away from the interference section 312 is equal to an outer diameter- (0.1-0.2 mm) of the fitting hole 241, so that the outer diameter of the end of the guide section 313 is smaller than the inner diameter of the fitting hole 241, thereby facilitating alignment and smooth press-in of the main body portion 31 of the sleeve 3 with the fitting hole 241.
Referring to fig. 11, in an embodiment, the sleeve 3 is further provided with a glue groove 33, the glue groove 33 is disposed on the hanging support plate 32, specifically, the glue groove 33 is located on a surface of the hanging support plate 32 close to the main body 31, that is, the glue groove 33 is located between the surface of the hanging support plate 32 and the surface of the connecting plate 24.
The glue groove 33 may be a groove formed by milling or the like on the surface of the mounting plate 32 on the side close to the main body 31, or the glue groove 33 may be formed together with the mounting plate 32 by an integral molding process during the production of the sleeve 3. The glue groove 33 can be used for accommodating the structural glue 4, thereby improving the connection strength of the sleeve 3 and the connecting plate 24. Preferably, the depth of the glue groove is greater than or equal to 0.2 mm.
Compared with the structure glue 4 directly coated between the surface of the hanging support plate 32 and the surface of the connecting plate 24 without a glue groove, after the glue groove 33 is arranged, the thickness of the structure glue 4 between the hanging support plate 32 and the connecting plate 24 (namely the thickness of the structure glue is greater than or equal to the depth of the glue groove 33) can be ensured, so that the connection strength between the hanging support plate 32 on the sleeve 3 and the connecting plate 24 is ensured, and the sleeve 3 is further prevented from falling off under special working conditions. Due to the glue groove 33, the hanging plate 32 and the connecting plate 24 can still be effectively bonded together under the condition that the hanging plate 43 and the connecting plate are bonded at a zero distance (namely, completely bonded without a gap). Through a plurality of tests, in the embodiment, the glue groove 33 is formed in 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.
As shown in fig. 11, in an embodiment, the glue groove 33 is an annular groove, and the glue groove 33 is disposed around the outer circumference of the main body 31.
Further, as shown in fig. 12, one side of the mounting plate 32 close to the main body 31 is provided with an annular protrusion, the annular protrusion surrounds the main body 31, and an adhesive groove 33 is formed with the outer peripheral surface of the main body 31 close to the mounting plate 32 (i.e. the outer wall of the gap section 311).
In this embodiment, the glue groove 33 is provided near the main body 31 so that the structural glue is distributed near the center on the mounting plate 32, thereby ensuring the reliability of the connection between the mounting plate 32 and the connection plate 24 of the mounting hole 241.
In other embodiments, the glue groove 33 may be a segmented arc-shaped groove surrounding the body portion 31, instead of the annular groove structure shown in fig. 11. In other embodiments, the glue grooves 33 may also be a plurality of grooves uniformly distributed in a dotted manner on a side surface of the hanging and carrying plate 32 close to the main body 31.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative idea of the present invention, the changes and modifications to the embodiments herein, or the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims (10)

1. A sleeve for a battery case, comprising:
the main body part is used for being tightly attached to the assembly hole of the battery box body;
the hanging support plate is arranged at one end of the sleeve in the axial direction and is connected with the main body part;
wherein the main body portion includes:
the gap section is arranged at one end, close to the hanging and carrying plate, of the main body part in the axis direction, the gap section is connected with the hanging and carrying plate, and the outer diameter of the gap section is smaller than the inner diameter of the assembling hole;
the interference section is arranged at one end, far away from the axis direction of the main body part, of the hanging support plate, the interference section is connected with the clearance section, and the outer diameter of the interference section is larger than the inner diameter of the assembling hole.
2. The sleeve for a battery case of claim 1, wherein the main body portion further comprises a guide section;
the guide section is arranged at one end, far away from the hanging support plate, of the main body part, the guide section is connected with the interference section, and the outer diameter of the guide section gradually decreases along the direction far away from the interference section.
3. The sleeve for a battery case according to claim 2, wherein an outer diameter of a distal end of the guide section is smaller than an inner diameter of the fitting hole by 0.1mm to 0.2 mm.
4. The sleeve for the battery box body as claimed in claim 1, wherein the hanging and carrying plate is provided with a glue groove, and the glue groove is positioned on the surface of one side of the hanging and carrying plate close to the main body part.
5. The sleeve for the battery box according to claim 4, wherein the glue groove is an annular groove and is disposed around the main body portion.
6. The sleeve for the battery box body as claimed in claim 5, wherein one side of the hanging support plate close to the main body part is provided with an annular protrusion part, the annular protrusion part surrounds the main body part, and the rubber groove is formed on the outer peripheral surface of the hanging support plate close to the main body part.
7. The sleeve for a battery case according to any one of claims 4 to 6, wherein the depth of the glue groove is greater than or equal to 0.2 mm.
8. A battery, comprising:
a plurality of battery cells;
the battery box body is used for accommodating the plurality of battery cells; the battery box includes:
the connecting plate is connected with the battery box body and used for mounting the battery box body, and an assembling hole is formed in the connecting plate;
a sleeve according to any one of claims 1 to 7; the main body part is connected with the assembly hole.
9. The battery of claim 8, wherein a glue layer is disposed between the connection board and the hanging carrier board, and the glue layer connects the connection board and the hanging carrier board.
10. An electric consumer, characterized in that the electric consumer comprises a battery according to claim 8 or 9 for providing electric energy.
CN202122345503.0U 2021-09-27 2021-09-27 Sleeve for battery box body, battery and power utilization device Active CN216015581U (en)

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PCT/CN2022/101781 WO2023045461A1 (en) 2021-09-27 2022-06-28 Sleeve for battery case, battery and electric device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023045461A1 (en) * 2021-09-27 2023-03-30 宁德时代新能源科技股份有限公司 Sleeve for battery case, battery and electric device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5425526B2 (en) * 2009-05-29 2014-02-26 三洋電機株式会社 Sealed battery
CN207381449U (en) * 2017-10-31 2018-05-18 宁德时代新能源科技股份有限公司 Battery case and battery pack
CN209761927U (en) * 2019-03-15 2019-12-10 北京长城华冠汽车科技股份有限公司 A vehicle that is used for connection structure of vehicle and has it
CN216015581U (en) * 2021-09-27 2022-03-11 宁德时代新能源科技股份有限公司 Sleeve for battery box body, battery and power utilization device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023045461A1 (en) * 2021-09-27 2023-03-30 宁德时代新能源科技股份有限公司 Sleeve for battery case, battery and electric device

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