WO2022041821A1 - 箱体、电池、用电设备及箱体的组装方法 - Google Patents

箱体、电池、用电设备及箱体的组装方法 Download PDF

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Publication number
WO2022041821A1
WO2022041821A1 PCT/CN2021/091336 CN2021091336W WO2022041821A1 WO 2022041821 A1 WO2022041821 A1 WO 2022041821A1 CN 2021091336 W CN2021091336 W CN 2021091336W WO 2022041821 A1 WO2022041821 A1 WO 2022041821A1
Authority
WO
WIPO (PCT)
Prior art keywords
box body
box
sealant
bracket
accommodating groove
Prior art date
Application number
PCT/CN2021/091336
Other languages
English (en)
French (fr)
Inventor
陈彬彬
薛丹月
王庆
陈宜锋
任帅
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to JP2022580063A priority Critical patent/JP7536902B2/ja
Priority to EP21859668.2A priority patent/EP4160796A4/en
Publication of WO2022041821A1 publication Critical patent/WO2022041821A1/zh
Priority to US18/175,476 priority patent/US20230207946A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
    • 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
    • H01M50/26—Assemblies sealed to each other in a non-detachable manner
    • 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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 power batteries, and in particular, to a case, a battery, an electrical device, and an assembly method of the case.
  • a sealing ring is provided between the first case body and the second case body to realize the sealing of the first case body and the second case body, and this sealing method is easy to fail.
  • Embodiments of the present application provide a case body, a battery, an electrical device, and an assembling method for the case body, so as to improve the problem of easy failure of sealing in the existing sealing method.
  • an embodiment of the present application provides a box body, including a first box body, an accommodating groove, a sealant, and a second box body; the first box body has an opening; the accommodating groove is arranged along the circumference of the opening; The glue is accommodated in the accommodating groove; the second case body has a circumferentially arranged joint portion, and the joint portion is used for extending into the accommodating groove and extending into the accommodating groove when the second case body is closed on the opening. It is combined with the sealant to realize the sealed connection between the first box body and the second box body.
  • the accommodating groove acts as a restriction on the sealant, the sealant will not be offset in the accommodating groove, the seal failure is not easy to occur, and the sealing is ensured.
  • the sealing performance of the glue Since the joint portion of the second box body extends into the accommodating groove and is combined with the sealant, the accommodating groove can also limit the position of the joint portion. During installation, after the sealant is injected into the accommodating groove, the joint part of the second box body is extended into the accommodating groove and combined with the sealant, so as to realize the sealing of the first box body and the second box body, and the installation is convenient and fast.
  • the accommodating groove always contains the sealant, and the joint part of the second box and the sealant can always be kept in a combined state, and will not be caused by the excessive pressing of the second box. Seal failure.
  • the joint portion is used to extend into the accommodating groove and be inserted into the sealant, so that the joint portion is combined with the sealant.
  • the combination of the joint and the sealant is realized by inserting the joint into the sealant, which improves the firmness of the joint and the sealant, increases the contact area between the sealant and the joint, and improves the first time.
  • the tightness of the first box body and the second box body is realized by inserting the joint into the sealant, which improves the firmness of the joint and the sealant, increases the contact area between the sealant and the joint, and improves the first time.
  • the accommodating groove is located inside the first box body.
  • the accommodating groove inside the first box by arranging the accommodating groove inside the first box, the space inside the first box is effectively utilized, the external space occupied by the first box is reduced, and the energy density of the battery is improved.
  • the box body further includes a bracket, the bracket is disposed in the first box body, and the inner peripheral wall of the first box body and the bracket jointly define the accommodating groove.
  • the supporting groove is defined by the bracket disposed inside the box body and the inner peripheral wall of the first box body.
  • the brackets disposed on the first box body can play a certain role in strengthening the first box body.
  • the bracket has a limit portion; the limit portion is used for abutting against the battery unit located in the first case, so as to restrict the battery unit from approaching the second case direction of the body.
  • the limiting portion of the bracket can limit the battery cells placed in the first box, so as to reduce the possibility of the battery cells shaking in the first box. That is to say, the bracket has two functions, one function is to define a receiving groove together with the inner peripheral wall of the first box body, and the other function is to confine the battery cells in the first box body.
  • the bracket is integrally formed with the first box body; or the bracket is independent of the first box body.
  • the bracket and the first box body are integrally formed, so that the bracket and the first box body form a whole, the firmness between the bracket and the first box body is improved, and there is no gap between the bracket and the first box body. There will be no leakage of glue in the holding tank.
  • the bracket is independent of the first box body, and the bracket and the first box body can be manufactured separately and then assembled, which can effectively reduce the forming difficulty of the accommodating groove and reduce the production cost.
  • the box body further includes a first locking member, and the bracket and the first box body are connected by the first locking member.
  • the bracket and the first box are connected together by the first locking member, which improves the firmness of the bracket after the bracket is arranged inside the first box, and further reduces the possibility of the battery unit shaking in the first box.
  • the first box body is provided with a first installation hole
  • the bracket is provided with a second installation hole; the first locking member passes through the first installation hole, The sealant and the second mounting hole are used to connect the bracket with the first box body.
  • the first locking member since the first locking member passes through the first mounting hole, the sealant and the second mounting hole in sequence, while the first locking member locks the bracket and the first box body, the first locking member
  • the sealant plays a fixed role to prevent the sealant from falling off from the accommodating groove.
  • a notch for avoiding the first locking member is formed on the joint portion, and the sealant completely covers the notch.
  • the joint part since the joint part is set in the gap, when the joint part is inserted into the sealant, the first locking member will enter into the gap, so as to avoid the interference between the joint part and the first locking member, and ensure that the joint part can Insert deeper into the sealant. Since the sealant completely covers the gap, it prevents external media (gas, liquid, etc.) from entering the box from the gap, ensuring good sealing.
  • the outer peripheral wall of the bracket includes a first peripheral surface and a second peripheral surface; the first peripheral surface is in contact with the inner peripheral wall of the first box body; the second peripheral surface is in contact with the first peripheral surface.
  • the inner peripheral wall of the first box body is arranged at intervals, the second peripheral surface is one side wall of the accommodating groove, and the inner peripheral wall of the first box body is the other side wall of the accommodating groove.
  • the first peripheral surface of the bracket is in contact with the inner peripheral wall of the first box body, which can realize the positioning of the bracket and the first box body, and can effectively reduce the possibility of the bracket shaking in the first box body.
  • the sealant in the accommodating groove will not overflow from between the first peripheral surface and the inner peripheral wall of the first box body.
  • the outer peripheral wall of the bracket further includes: a stepped surface formed between the first peripheral surface and the second peripheral surface, and the stepped surface is the bottom wall of the accommodating groove .
  • the step surface of the bracket is the bottom wall of the accommodating groove, that is, the bottom wall (step surface) and one side wall (the second peripheral surface) of the accommodating groove are both located on the bracket, and the bracket is rationally used, which simplifies the first box body. Structure.
  • the box body further includes a second locking member, and the second box body and the first box body are connected by the second locking member.
  • the second box body and the first box body are connected together by the second locking member, which improves the firmness of the joint portion of the second box body after being combined with the sealant.
  • the first box body is provided with a third mounting hole
  • the second box body is provided with a fourth mounting hole
  • the second locking member passes through the third mounting hole in sequence
  • the installation hole and the fourth installation hole are used to connect the first case body and the second case body; wherein, the third installation hole is closer to the opening than the sealant.
  • the third installation hole on the first box body through which the second locking member passes is closer to the opening of the first box body than the sealant, which can effectively avoid the process of injecting the sealant into the accommodating groove from the first box. Leakage of glue in the three mounting holes.
  • an embodiment of the present application provides a battery, including a battery unit and the case provided in the first aspect; the battery unit is accommodated in a sealed space jointly defined by the first case and the second case.
  • the sealant of the box body is accommodated in the accommodating groove, the sealant is not easy to fail, and the first box body and the second box body have good sealing performance, which can provide a long-term stable sealing environment for the battery cells.
  • an embodiment of the present application provides an electrical device, including the battery provided in the second aspect.
  • the battery of the electrical equipment has good sealing performance, and the box of the battery can provide a long-term stable sealing environment for the battery unit.
  • an embodiment of the present application provides a method for assembling a box, the method comprising: injecting sealant into a accommodating groove provided along the circumference of an opening of the first box; The joint portion of the second box body is arranged in the circumferential direction into the accommodating groove and is combined with the sealant.
  • the battery can be quickly assembled by the above method, and the assembled battery has good sealing performance. Since the sealant is injected into the accommodating groove, the accommodating groove restricts the sealant, the sealant will not be offset in the accommodating groove, and the sealing failure is not easy to occur, so as to ensure the sealing performance of the sealant. After the bonding part of the battery is combined with the sealant, the second box body and the first box body can provide a long-term stable sealing environment for the battery unit.
  • the method further includes: installing a bracket in the first box, so that the inner peripheral wall of the first box and the bracket together define an opening along the first box Circumferentially arranged accommodating grooves.
  • the bracket is installed in the first box, and the bracket and the inner peripheral wall of the first box jointly define the accommodating groove, so that the accommodating groove can be as close as possible to the edges of the surrounding of the first box, and at the same time effectively reduce the problem of The forming difficulty of the accommodating groove reduces the production cost.
  • FIG. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • FIG. 2 is a schematic structural diagram of a battery provided by some embodiments of the present application.
  • FIG. 3 is a partial view of a box body (the first possibility of the first combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 4 is a partial view of a box body (a second possibility of the first combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 5 is a partial view of a box body (the third possibility of the first combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 6 is a partial view of a box body (the second combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 7 is a partial view of a box body (the first possibility of the third combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 8 is a partial view of a box body (the second possibility of the third combination form of the joint part and the sealant) provided by some embodiments of the present application;
  • FIG. 9 is a first possible positional relationship diagram of the first box body and the accommodating groove provided by some embodiments of the present application.
  • FIG. 10 is a second possible positional relationship diagram of the first box body and the accommodating groove provided by some embodiments of the application.
  • FIG. 11 is a third possible positional relationship diagram of the first box body and the accommodating groove provided by some embodiments of the application.
  • FIG. 12 is an exploded view of a battery provided by some embodiments of the present application.
  • FIG. 13 is a positional relationship diagram of the first box body and the bracket provided by some embodiments of the present application.
  • FIG. 14 is a positional relationship diagram of a first box body, a bracket, and a battery unit according to some embodiments of the present application;
  • 15 is a schematic structural diagram of a stent provided by some embodiments of the present application.
  • FIG. 16 is a first possible structural schematic diagram of a case body (the first case body and the bracket are connected by a first locking member) provided by some embodiments of the application;
  • Fig. 17 is a schematic diagram of a second possible structure of the case provided by some embodiments of the application (the first case and the bracket are connected by a first locking member);
  • FIG. 18 is a schematic structural diagram of a case (the second case is connected to the first case by a second locking member) provided by some embodiments of the application;
  • 19 is a partial view of a battery provided by some embodiments of the present application.
  • FIG. 20 is a flowchart of a method for assembling a box body provided by some embodiments of the present application.
  • 21 is a flow chart of a method for assembling a box body provided by further embodiments of the present application.
  • the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the application is usually placed in use, or the Orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product of the application is commonly placed in use, is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present application. Furthermore, the terms “first”, “second”, “third”, etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.
  • the embodiments of the present application provide an electrical device, a battery, a case, and a method for assembling the case, so as to improve the situation that the existing sealing method is easy to fail.
  • Embodiments of the present application provide an electrical device, which may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, and the like.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.
  • spacecraft include airplanes, rockets, space shuttles, spacecraft, etc.
  • electric toys include fixed Electric toys of type or mobile type, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.
  • electric tools include metal cutting electric tools, grinding electric tools, assembling electric tools and railway electric tools, such as, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators and electric planers, etc.
  • the embodiments of the present application do not impose special restrictions on the above-mentioned electrical equipment.
  • the electric device is a vehicle as an example for description.
  • a battery 100 is disposed inside a vehicle 1000 , and the battery 100 may be disposed at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 may be used for power supply of the vehicle 1000 , for example, the battery 100 may be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may also include a controller 200 and a motor 300 for controlling the battery 100 to supply power to the motor 300 , eg, for starting, navigating, and running the vehicle 1000 for work power requirements.
  • the battery 100 can not only be used as the operating power source of the vehicle 1000 , but also can be used as the driving power source of the vehicle 1000 to provide driving power for the vehicle 1000 instead or partially instead of fuel or natural gas.
  • the battery 100 provided in this embodiment of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery 100 mentioned in this application may include a battery module or a battery pack or the like.
  • the battery 100 generally includes a case for enclosing one or more battery cells.
  • the box can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.
  • a battery cell includes one or more battery cells. If the battery cell includes a plurality of battery cells, the plurality of battery cells may be connected together in series and/or in parallel via the busbar.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application.
  • the battery cell may be in the form of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which are not limited in the embodiments of the present application.
  • the battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator.
  • the battery cell mainly relies on the movement of metal ions between the positive and negative plates to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, and the positive electrode active material layer is not coated.
  • the current collector coated with the positive electrode active material layer serves as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate.
  • the negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer, The current collector coated with the negative electrode active material layer was used as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc.
  • the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together.
  • the material of the diaphragm can be PP or PE, etc.
  • the electrode assembly may be a wound structure or a laminated structure, and the embodiment of the present application is not limited thereto.
  • the battery 100 provided in the embodiment of the present application includes a case 10 and a battery unit 30 , the battery unit 30 is accommodated in the case 10 , and the case 10 can provide a long-term stable sealing environment for the battery unit 30 .
  • the box body 10 provided in the embodiment of the present application includes a first box body 11 , a receiving groove 12 , a sealant 13 and a second box body 14 .
  • the first box body 11 has an opening 111 , the accommodating groove 12 is disposed along the circumferential direction of the opening 111 , and the sealant 13 is accommodated in the accommodating groove 12 .
  • the second box body 14 has a circumferentially arranged joint portion 141 , and the joint portion 141 is used to extend into the accommodating groove 12 and combine with the sealant 13 when the second box body 14 is closed on the opening 111 , so as to realize the first box body
  • the body 11 is in a sealed connection with the second box body 14 .
  • the accommodating groove 12 Since the sealant 13 is accommodated in the accommodating groove 12 , the accommodating groove 12 has a restricting effect on the sealant 13 , the sealant 13 will not be offset in the accommodating groove 12 , and the sealing failure is unlikely to occur, ensuring the sealant 13 . sealing performance. Since the joint portion 141 of the second box body 14 extends into the accommodating groove 12 and is combined with the sealant 13 , the accommodating groove 12 can also limit the position of the joint portion 141 . During installation, after the sealant 13 is injected into the accommodating groove 12 , the joint portion 141 of the second box body 14 is extended into the accommodating groove 12 and combined with the sealant 13 , so that the first box body 11 and the second box body 14 are connected together. Sealed, easy and fast installation.
  • the sealant 13 is always contained in the accommodating groove 12, and the joint portion 141 of the second box body 14 and the sealant 13 can always be kept in a combined state, and will not be affected by the second box body 14.
  • the casing 14 is pressed too much, causing the seal to fail.
  • first box body 11 may be the box cover of the second box body 14
  • second box body 14 may be the box cover of the first box body 11 .
  • the following embodiments are all described by taking the second box body 14 as the box cover of the first box body 11 as an example. It can be understood that the second box body 14 is located on the upper side of the first box body 11 .
  • the first box 11 is a hollow structure with an opening 111 at the top.
  • the first box 11 may be a rectangular parallelepiped, a cylinder, or the like.
  • the second case body 14 also has a body 142 for covering the opening 111 of the first case body 11 , and the joint portion 141 is fixed to the bottom of the body 142 .
  • the coupling portion 141 may be a rectangular ring, a circular ring, or the like.
  • the body 142 of the second box 14 may be a rectangular structure, and the joint portion 141 of the second box 14 may be a rectangular ring; in the case where the first box 11 is a cylinder Next, the body 142 of the second case 14 may be a circular structure, and the joint portion 141 of the second case 14 may be a circular ring.
  • joint portion 141 of the second box body 14 is combined with the sealant 13, which can be understood as that after the sealant 13 in the accommodating groove 12 is solidified, the sealant 13 and the joint portion 141 are connected together.
  • the bonding portion 141 and the sealant 13 have various bonding forms.
  • the joint portion 141 is inserted into the sealant 13 to combine the joint portion 141 with the sealant 13 .
  • This structure improves the performance of the joint portion 141 and the sealant 13 .
  • the firmness after bonding increases the contact area between the sealant 13 and the bonding portion 141 , and improves the sealing performance between the first case 11 and the second case 14 .
  • the joint portion 141 when the joint portion 141 is inserted into the sealant 13, the joint portion 141 has three arrangement forms. Please refer to FIG. 3 , the first one is that the inner peripheral wall and the outer peripheral wall of the joint portion 141 are at a distance from the side wall of the accommodating groove 12 ; please refer to FIG. Please refer to FIG. 5 , the third type is that the outer peripheral wall of the joint portion 141 is attached to a side wall of the accommodating groove 12 .
  • the joint portion 141 When the joint portion 141 is inserted into the sealant 13 , the joint portion 141 may extend to the bottom wall of the accommodating slot 12 , and the joint portion 141 may also have a certain distance from the bottom wall of the accommodating slot 12 .
  • the end face of one end of the joint portion 141 extending into the receiving groove 12 is just bonded to the upper surface of the sealant 13 , so that the joint portion 141 is combined with the sealant 13 .
  • a concave portion 1411 is provided on the end surface of one end of the joint portion 141 extending into the accommodating groove 12 , and the sealant 13 extends into the concave portion 1411 so that the joint portion 1411 141 is combined with the sealant 13.
  • the thickness of the coupling portion 141 may be equal to the width of the accommodating groove 12 , that is, the inner peripheral wall and the outer peripheral wall of the coupling portion 141 are respectively attached to the two side walls of the accommodating groove 12 .
  • the coupling portion 141 presses the sealant 13 in the accommodating groove 12 into the concave portion 1411 .
  • the recessed portion 1411 may have various structures. Referring to FIG. 7 , the concave portion 1411 may be an annular groove 1411a disposed in the joint portion 141 ; please refer to FIG. 8 , the concave portion 1411 may be an air outlet hole 1411b disposed in the joint portion 141 , and the air outlet hole 1411b may be a circular hole , square holes, etc.
  • the accommodating groove 12 is provided in the first box body 11 , and the accommodating groove 12 may have various arrangement forms. Referring to FIG. 9 , the accommodating groove 12 may be disposed on the outer side of the first box body 11 . Referring to FIG. 10 , the accommodating groove 12 may also be disposed on the end surface of the first box body 11 . Referring to FIG. 11 , the accommodating groove 12 can also be disposed inside the first case 11 to effectively utilize the space inside the first case 11 , reduce the external space occupied by the first case 11 , and improve the energy density of the battery 100 .
  • the box body 10 further includes a bracket 15 , the bracket 15 is disposed in the first box body 11 , and the bracket 15 and the inner peripheral wall of the first box body 11 together define The accommodating groove 12 (shown in FIG. 13 ) on the inner side of the first case 11 .
  • the accommodating groove 12 is jointly defined by the bracket 15 disposed inside the box body 10 and the inner peripheral wall of the first box body 11 , the structure is simple, and the accommodating groove 12 can be as close to the periphery of the first box body 11 as possible.
  • the brackets 15 disposed on the first box body 11 can play a certain role in strengthening the first box body 11 .
  • the bracket 15 is independent of the first box body 11 . After the bracket 15 and the first box body 11 can be manufactured separately, they can be assembled together, which can effectively reduce the difficulty of forming the accommodating groove 12 and reduce the production cost.
  • the peripheral wall of the bracket 15 includes a first peripheral surface 151 and a second peripheral surface 152 .
  • the first peripheral surface 151 is in contact with the inner peripheral wall of the first case 11 .
  • the second peripheral surface 152 is spaced apart from the inner peripheral wall of the first box 11 , the second peripheral surface 152 is one side wall of the accommodating groove 12 , and the inner peripheral wall of the first box 11 is the other side wall of the accommodating groove 12 .
  • the first peripheral surface 151 of the bracket 15 is in contact with the inner peripheral wall of the first box body 11 .
  • the sealant 13 in the accommodating groove 12 will not overflow from the space between the first peripheral surface 151 and the inner peripheral wall of the first box 11 .
  • the outer peripheral wall of the bracket 15 further includes a stepped surface 153 formed between the first peripheral surface 151 and the second peripheral surface 152 , and the stepped surface 153 is the bottom wall of the accommodating groove 12 .
  • the stepped surface 153 of the bracket 15 is the bottom wall of the accommodating groove 12 , that is, the bottom wall (step surface 153 ) and one side wall (the second peripheral surface 152 ) of the accommodating groove 12 are both located on the bracket 15 .
  • the rational use of the bracket 15 simplifies the The structure of the first case 11 .
  • the bottom wall of the accommodating groove 12 may also be provided on the first box body 11 .
  • the bracket 15 is a hollow frame structure, which can effectively reduce the weight of the bracket 15, and at the same time, facilitate the placement of components such as circuit boards (not shown in the figure) and wire harnesses (not shown in the figure).
  • the bracket 15 includes a first enclosure 154 , a second enclosure 155 and a connecting body 156 , and the first enclosure 154 and the second enclosure 155 are connected by the connecting body 156 .
  • the second enclosure 155 is closer to the opening 111 of the box body 10 than the first enclosure 154
  • the first peripheral surface 151 is the outer surface of the first enclosure 154
  • the second peripheral surface 152 is the outer surface of the second enclosure 155
  • the stepped surface 153 is the outer surface of the connecting body 156 .
  • the bracket 15 further includes a limiting portion 157 , and the limiting portion 157 is used to abut against the battery unit 30 located in the first case 11 to limit the battery unit 30 to approach the second The direction of the box 14 moves.
  • the limiting portion 157 of the bracket 15 can limit the battery cells 30 placed in the first case 11 , so as to reduce the possibility of the battery cells 30 shaking in the first case 11 . That is to say, the bracket 15 has two functions, one is to define the receiving groove 12 together with the inner peripheral wall of the first case 11 , and the other is to confine the battery cells 30 in the first case 11 .
  • the battery unit 30 can be placed in the first box 11 first, and then the bracket 15 can be installed in the first box 11, so that the limiting part 157 is pressed against the top of the battery unit 30, so that the battery unit 30 is confined within the first casing 11 .
  • the limiting portion 157 extends from the connecting body 156 in a direction close to the center of the first box body 11 .
  • the limiting portion 157 may be arranged along the entire circumference of the connecting body 156 , that is, the limiting portion 157 is an annular structure, such as a rectangular ring or a circular ring.
  • the limiting portion 157 may also be partially arranged along the circumference of the connecting body 156 , for example, the connecting body 156 is a rectangular ring structure, and the limiting portion 157 is arranged on one, two or three sides of the connecting body 156 .
  • the bracket 15 is a rectangular ring structure, and the bracket 15 includes four frames 159 connected end to end. It is understandable that the first enclosure body 154 , the second enclosure body 155 and the connecting body 156 of the bracket 15 are all rectangular ring structures. Limiting portions 157 are provided on two opposite sides of the connecting body 156 .
  • the bracket 15 may be an integral structure or a split structure.
  • the four frames 159 of the bracket 15 can be manufactured separately, and then the four frames 159 are connected together by welding.
  • the four borders 159 can be formed by bending a plate.
  • the sealant 13 can play a certain role in fixing the bracket 15 and the first box 11, that is, the bracket 15
  • the first box body 11 is bonded together by the sealant 13 .
  • the box body 10 may further include a first locking member 16 , and the bracket 15 and the first box body 11 are connected by the first locking member 16 , In order to connect and fix the bracket 15 with the first box body 11 , the possibility of the battery unit 30 shaking in the first box body 11 is further reduced.
  • the first housing 11 is provided with a first mounting hole 112
  • the bracket 15 is provided with a second mounting hole 158
  • the first locking member 16 passes through the first mounting hole 112 , the sealant 13 and the The second mounting hole 158 is used to connect the bracket 15 with the first box body 11 .
  • the first locking member 16 Since the first locking member 16 passes through the first mounting hole 112 , the sealant 13 and the second mounting hole 158 in sequence, the first locking member 16 locks the bracket 15 and the first box 11 at the same time as the first locking member 16 .
  • the tightening member 16 acts to fix the sealant 13 to prevent the sealant 13 from falling off from the accommodating groove 12 .
  • the sealant 13 completely covers the first mounting hole 112 and the second mounting hole 158 , even if there is a gap between the peripheral wall of the first locking member 16 and the hole wall of the first mounting hole 112 or the second mounting hole 158 , The sealant 13 can also block or block the gap, thereby increasing the sealing reliability of the box body 10 .
  • the second mounting hole 158 is disposed on the second enclosure 155 of the bracket 15 .
  • first locking member 16 passes through the first installation hole 112 , the sealant 13 and the second installation hole 158 in sequence, which only means that the first locking member 16 passes through the first installation hole 112 , the sealant and the sealant at the same time.
  • the final state of 13 and the second mounting hole 158 does not merely mean that during assembly, the first locking member 16 first passes through the first mounting hole 112, then passes through the sealant 13, and finally passes through the second mounting hole 158 .
  • the sealant 13 may be injected into the accommodating groove 12 first, and then the first locking member 16 is passed through the first mounting hole 112 and the second mounting hole 158, and the first locking member 16 naturally passes through
  • the sealant 13 finally realizes the connection and fixation of the bracket 15 and the box body 10; of course, it is also possible to first pass the first locking member 16 through the first installation hole 112 and the second installation hole 158 to realize the connection between the bracket 15 and the box 10. After the connection of the box body 10 is fixed, the sealant 13 is injected into the accommodating groove 12 .
  • the first locking member 16 is a screw, the end of the first locking member 16 is screwed with a first nut 17, the first nut 17 is located inside the first box 11, and the first nut 17 is pressed against the The second enclosure 155 of the bracket 15 .
  • the first nut 17 is a tubular member with one end open, the first nut 17 is screwed to the outside of the first locking member 16 , and the open end of the first nut 17 extends into the second mounting hole 158 , the part of the first nut 17 extending to the second installation hole 158 forms a sealing connection with the hole wall of the second installation hole 158 .
  • the portion of the first nut 17 extending into the second mounting hole 158 may form a sealing connection with the hole wall of the second mounting hole 158 through the first sealing ring 18 .
  • the end of the joint portion 141 may extend to the first lock.
  • the area between the locking member 16 and the bottom wall of the accommodating slot 12, in this case, a gap 1412 (shown in FIG. 12) for avoiding the first locking member 16 can be opened on the joint portion 141 to avoid the joint
  • the portion 141 interferes with the first locking member 16 to ensure that the joint portion 141 can be inserted into a deeper position of the sealant 13 .
  • the sealant completely covers the gap 1412 to prevent external media (gas, liquid, etc.) from entering the box body 10 from the gap 1412, so as to ensure good sealing.
  • the main body 142 of the second box 14 and the joint part 141 have a one-piece structure, and the second box 14 forms a bending structure 143 at the connection position of the main body 142 and the joint part 141 , and the joint part 141 When inserted into the sealant 13 , the body 142 naturally covers the opening 111 of the first case 11 .
  • the end of the joint portion 141 may also extend to the first The area between the locking piece 16 and the notch of the receiving groove 12 .
  • bracket 15 in addition to connecting and fixing the bracket 15 with the box body 10 through the first locking member 16, the bracket 15 can also be connected and fixed with the box body 10 in other ways. For example, after the bracket 15 is placed in the box body 10, Both are fixed by welding.
  • the bracket 15 in addition to being independent of the bracket 15, the bracket 15 can also be integrally formed with the first box body 11, so that the bracket 15 and the first box body 11 form a whole, and the distance between the bracket 15 and the first box body 11 is improved. Firmness, there will be no gap between the bracket 15 and the first box body 11 , and no glue leakage will occur in the accommodating groove 12 .
  • the limiter 157 may not be provided in the bracket 15, and the battery unit 30 (shown in FIG. 14 ) is loaded into the first box
  • the battery unit 30 can be put into the first case body 11 from the central position of the bracket 15 .
  • the box body 10 may further include a second locking member 19 , and the second box body 14 and the first box body 11 are connected by the second locking member 19 to connect the second box body 14 is connected and fixed with the first box body 11 .
  • This structure improves the firmness of the joint portion 141 of the second box body 14 after being combined with the sealant 13 . At the same time, this structure also improves the stability of the connection between the second box body 14 and the first box body 11 .
  • the first box body 11 is provided with a third mounting hole 113
  • the second box body 14 is provided with a fourth mounting hole 1413 .
  • the second locking member 19 passes through the third mounting hole 113 and the fourth mounting hole 1413 in sequence, so as to connect and fix the first box body 11 and the second box body 14 .
  • the third mounting hole 113 is closer to the opening 111 than the sealant 13 . It is understandable that the third mounting hole 113 is higher than the sealant 13 .
  • This structure can effectively avoid the leakage of glue from the third installation hole 113 during the process of injecting the sealant 13 into the accommodating groove 12 , and at the same time, the bracket 15 will not be affected by the bracket 15 during the process of passing the second locking member 19 . interference.
  • the fourth mounting hole 1413 is provided on the joint portion 141 of the second box body 14 .
  • the second locking member 19 is a screw, the end of the second locking member 19 is screwed with a second nut 20, the second nut 20 is located inside the first box 11, and the second nut 20 is pressed against the Bonding part 141 .
  • the second nut 20 is a tubular member with one end open, the second nut 20 is screwed to the outside of the second locking member 19 , and the open end of the second nut 20 extends into the fourth mounting hole 1413 , the part of the second nut 20 extending to the fourth installation hole 1413 forms a sealing connection with the hole wall of the fourth installation hole 1413 .
  • the portion of the second nut 20 extending into the fourth mounting hole 1413 may form a sealing connection with the hole wall of the second mounting hole 158 through the second sealing ring 21 .
  • the battery unit 30 is accommodated in the sealed space 22 jointly defined by the first case 11 and the second case 14 .
  • the top of the battery unit 30 abuts against the limiting portion 157 of the bracket 15 .
  • the battery unit 30 may directly abut against the limiting portion 157 , and the battery unit 30 may also indirectly abut against the limiting portion 157 .
  • the battery unit 30 is indirectly abutted against the limiting portion 157 .
  • the top of the battery unit 30 is provided with an insulator 31 , which is used to limit the battery unit 30 and play an insulating role.
  • the top of the insulator 31 is provided with a buffer member 32 , and the buffer member 32 abuts against the limiting portion 157 .
  • the buffer member 32 is used for buffering the insulator 31 to avoid rigid contact between the insulator 31 and the limiting portion 157, and has a good vibration damping effect on the battery unit 30.
  • the buffer member 32 may be made of foam, rubber or other materials.
  • the battery unit 30 includes one or more battery cells 33 . If the battery cell 30 includes a plurality of battery cells 33, the plurality of battery cells 33 may be connected together in series and/or in parallel via a bus bar (not shown in the figure). FIG. 19 shows a case where the battery cell 30 includes a plurality of cylindrical battery cells.
  • box body 10 provided in the embodiment of the present application is not limited to accommodating the battery unit 30, and the box body 10 can also be used to accommodate other objects, such as goods that need to be dust-proof and waterproof during transportation.
  • an embodiment of the present application further provides a method for assembling the box body 10 , the method includes:
  • the box body 10 can be quickly assembled, and the assembled box body 10 has good sealing performance. Since the sealant 13 is injected into the accommodating groove 12 , the accommodating groove 12 has a restricting effect on the sealant 13 , the sealant 13 will not be offset in the accommodating groove 12 , and the sealing failure is unlikely to occur, ensuring the sealant 13 . In terms of sealing performance, after the joint portion 141 of the second box body 14 is combined with the sealant 13 , the second box body 14 and the first box body 11 can provide a long-term stable sealing environment.
  • the assembling method of the box body 10 further includes:
  • the accommodating groove 12 is provided in the circumferential direction of the opening 111 of the first box body 11 .
  • step S200 the second box body 14 and the first box body 11 can be locked by the second locking member 19 .
  • step S300 when assembling the battery 100 based on the assembling method of the box body 10, the battery unit 30 may be put into the first box body first, and then step S300 is performed.
  • step S300 the limiting portion 157 of the bracket 15 may be pressed against the top of the battery unit 30 first, and then the bracket 15 and the first case 11 may be locked by the first locking member 16 .
  • step S300 can also be performed first, and then the battery cells 30 are put into the first case 11 .
  • the brackets 15 are first installed in the first box 11 , and then the battery cells 30 are removed from the center of the brackets 15 . put into the first box 11 .

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Abstract

一种箱体（10）、电池（100）、用电设备及箱体（10）的组装方法。其中，箱体（10）包括第一箱体（11）、容纳槽（12）、密封胶（13）和第二箱体（14）。第一箱体（11）具有开口（111）。容纳槽（12）沿开口（111）的周向设置。密封胶（13）容纳于容纳槽（12）内。第二箱体（14）具有周向布置的结合部（141），结合部（141）用于在第二箱体（14）盖合在开口（111）上时伸入容纳槽（12）内并与密封胶（13）结合，以实现第一箱体（11）与第二箱体（14）的密封连接。容纳槽（12）可对密封胶（13）起到限制作用，密封胶（13）在容纳槽（12）内不会出现偏移现象，不易出现密封失效的情况，保证密封胶（13）的密封性能。

Description

箱体、电池、用电设备及箱体的组装方法
相关申请的交叉引用
本申请要求享有于2020年08月31日提交的名称为“箱体、电池、用电设备及箱体的组装方法”的中国专利申请CN202010901525.8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
本申请涉及动力电池技术领域，具体而言，涉及一种箱体、电池、用电设备及箱体的组装方法。
背景技术
为保证电池的密封性，一般需要在电池的第一箱体与第二箱体之间进行密封。在一些情形中，在第一箱体与第二箱体之间设置密封圈，来实现对第一箱体与第二箱体的密封，这种密封方式密封容易失效。
发明内容
本申请实施例提供一种箱体、电池、用电设备及箱体的组装方法，以改善现有的密封方式密封容易失效的问题。
第一方面，本申请实施例提供一种箱体，包括第一箱体、容纳槽、密封胶和第二箱体；第一箱体具有开口；容纳槽沿所述开口的周向设置；密封胶容纳于所述容纳槽内；第二箱体具有周向布置的结合部，所述结合部用于在所述第二箱体盖合在所述开口上时伸入所述容纳槽内并与所述密封胶结合，以实现所述第一箱体与所述第二箱体的密封连接。
在本申请提供的箱体中，由于密封胶容纳于容纳槽内，容纳槽对密封胶起到限制作用，密封胶在容纳槽内不会出现偏移现象，不易出现密封失效的情况，保证密封胶的密封性能。由于第二箱体的结合部延伸至容纳槽内与密封胶结合，容纳槽对结合部也可起到限位作用。在安装时，容纳槽内注入密封胶后，将第二箱体的结合部延伸至容纳槽内与密封胶结合，则实现第一箱体与第二箱体的密封，安装方便快速。在安装过程中，即使第二箱体按压过量，容纳槽内始终容纳有密封胶，第二箱体的结合部与密封胶始终能够保持在结合状态，不会因第二箱体按压过量而造成密封失效。
在本申请一些实施例中，所述结合部用于伸入所述容纳槽内并插入所述密封胶中，以使所述结合部与所述密封胶结合。
上述方案中，通过结合部插入密封胶中，来实现结合部与密封胶的结合，提高了结合部与密封胶结合后的牢固性，增大了密封胶与结合部的接触面积，提高了第一箱体与第二箱体的密封性。
在本申请一些实施例中，所述容纳槽位于所述第一箱体的内侧。
上述方案中，通过将容纳槽设置在第一箱体的内侧，有效利用第一箱体内部的空间，减少第一箱体所占用的外部空间，提高电池的能量密度。
在本申请一些实施例中，所述箱体还包括支架，支架设置在所述第一箱体内，所述第一箱体的内周壁与所述支架共同限定所述容纳槽。
上述方案中，通过设置在箱体内部的支架与第一箱体的内周壁共同限定出容纳槽，结构简单，可使容纳槽尽可能的靠近于第一箱体的四周的边缘。此外，设置于第一箱体的支架可对第一箱体起到一定的加固作用。
在本申请一些实施例中，所述支架具有限位部；所述限位部用于与位于所述第一箱体内的电池单元抵靠，以限制所述电池单元向靠近所述第二箱体的方向移动。
上述方案中，支架的限位部可对放置在第一箱体内的电池单元起到限制作用，以降低电池单元在第一箱体内晃动的可能性。也就是说，支架具有两个作用，一个作用是与第一箱体的内周壁共同限定出容纳槽，另一个作用是将电池单元限制在第一箱体内。
在本申请一些实施例中，所述支架与所述第一箱体一体成型；或所述支架独立于所述第一箱体。
上述方案中，支架与第一箱体一体成型，使得支架与第一箱体构成一个整体，提高支架与第一箱体之间的牢固性，支架与第一箱体之间不会出现间隙，容纳槽不会出现漏胶的情况。支架独立于第一箱体，可单独制造支架和第一箱体后，再对两者进行组装，可有效降低容纳槽的成型难度，降低生产成本。
在本申请一些实施例中，所述箱体还包括第一锁紧件，所述支架与所述第一箱体通过所述第一锁紧件连接。
上述方案中，通过第一锁紧件将支架与第一箱体连接在一起，提高了支架设置于第一箱体内侧后的牢固性，进一步降低电池单元在第一箱体内晃动的可能性。
在本申请一些实施例中，所述第一箱体上设有第一安装孔，所述支架上设有第二安装孔；所述第一锁紧件依次穿过所述第一安装孔、所述密封胶和所述第二安装孔，以将所述支架与所述第一箱体连接。
上述方案中，由于第一锁紧件依次穿过第一安装孔、密封胶和第二安装孔，第一锁紧件在将支架与第一箱体锁紧的同时，第一锁紧件对密封胶起到固定作用，防止密封胶从容纳槽内脱落。
在本申请一些实施例中，所述结合部上开设有用于避让所述第一锁紧件的缺口，所述密封胶完全覆盖所述缺口。
上述技术方案中，由于结合部上设置于缺口，结合部在插入密封胶的过程中，第一锁紧件将进入到缺口内，避免结合部与第一锁紧件发生干涉，保证结合部能够插入密封胶的更深位置。由于密封胶完全覆盖缺口，避免外界的介质(气体、液体等)从缺口进入到箱体内，保证良好的密封性。
在本申请一些实施例中，所述支架的外周壁包括第一周面和第二周面；第一周面与所述第一箱体的内周壁贴合；所述第二周面与所述第一箱体的内周壁间隔设置，所述第二周面为所述容纳槽的一个侧壁，所述第一箱体的内周壁为所述容纳槽另一个侧壁。
上述方案中，支架的第一周面与第一箱体的内周壁贴合，可实现支架与第一箱体的定位，可有效降低支架在第一箱体内晃动的可能性。此外，位于容纳槽内的密封胶不会从第一周面与第一箱体的内周壁之间溢出。
在本申请一些实施例中，所述支架的外周壁还包括：台阶面，形成在所述第一周面与所述第二周面之间，所述台阶面为所述容纳槽的底壁。
上述方案中，支架的台阶面为容纳槽的底壁，即容纳槽的底壁(台阶面)和一个侧壁(第二周面)均位于支架上，合理利用支架，简化了第一箱体的结构。
在本申请一些实施例中，所述箱体还包括第二锁紧件，所述第二箱体与所述第一箱体通过所述第二锁紧件连接。
上述方案中，通过第二锁紧件将第二箱体与第一箱体连接在一起，提高了第二箱体的结合部与密封胶结合后的牢固性。
在本申请一些实施例中，所述第一箱体上设有第三安装孔，所述第二箱体上设有第四安装孔；所述第二锁紧件依次穿过所述第三安装孔和所述第四安装孔，以将所述第一箱体与所述第二箱体连接；其中，所述第三安装孔较所述密封胶更靠近所述开口。
上述方案中，第一箱体上供第二锁紧件穿过的第三安装孔较密封胶更靠近第一箱体的开口，可有效避免在向容纳槽内注入密封胶的过程中从第三安装孔内漏胶的情况。
第二方面，本申请实施例提供一种电池，包括电池单元和上述第一方面提供的箱体；电池单元容纳于所述第一箱体与所述第二箱体共同限定的密封空间内。
上述方案中，由于箱体的密封胶容纳于容纳槽内，密封胶不易失效，第一箱体与第二箱体之间具有很好的密封性，可为电池单元提供长期稳定的密封环境。
第三方面，本申请实施例提供一种用电设备，包括上述第二方面提供的电池。
上述方案中，用电设备的电池具有很好的密封性，电池的箱体可为电池单元提供长期稳定的密封环境。
第四方面，本申请实施例提供一种箱体的组装方法，所述方法包括：向沿所述第一箱体的开口的周向设置的容纳槽内注入密封胶；将第二箱体盖合在所述开口上，使所述第二箱体的周向布置的结合部伸入所述容纳槽内并与所述密封胶结合。
通过上述方法可实现对电池的快速组装，组装好的电池具有很好的密封性。由于密封胶注入在容纳槽内，容纳槽对密封胶起到限制作用，密封胶在容纳槽内不会出现偏移现象，不易出现密封失效的情况，保证密封胶的密封性能，第二箱体的结合部与密封胶结合后，第二箱体与第一箱体可为电池单元提供长期稳定的密封环境。
在本申请一些实施例中，所述方法还包括：在所述第一箱体内安装支架，使所述第一箱体的内周壁与所述支架共同限定出沿所述第一箱体的开口的周向设置的容纳槽。
上述方案中，在第一箱体内安装支架，通过支架与第一箱体的内周壁共同限定出容纳槽，可使容纳槽尽可能的靠近于第一箱体的四周的边缘，同时有效降低了容纳槽的成型难度，降低生产成本。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池的结构示意图；
图3为本申请一些实施例提供的箱体(结合部与密封胶第一种结合形式的第一种可能)的局部视图；
图4为本申请一些实施例提供的箱体(结合部与密封胶第一种结合形式的第二种可能)的局部视图；
图5为本申请一些实施例提供的箱体(结合部与密封胶第一种结合形式的第三种可能)的局部视图；
图6为本申请一些实施例提供的箱体(结合部与密封胶第二种结合形式)的局部视图；
图7为本申请一些实施例提供的箱体(结合部与密封胶第三种结合形式的第一种可能)的局部视图；
图8为本申请一些实施例提供的箱体(结合部与密封胶第三种结合形式的第二种可能)的局部视图；
图9为本申请一些实施例提供的第一箱体与容纳槽第一种可能的位置关系图；
图10为本申请一些实施例提供的第一箱体与容纳槽第二种可能的位置关系图；
图11为本申请一些实施例提供的第一箱体与容纳槽第三种可能的位置关系图；
图12为本申请一些实施例提供的电池的爆炸图；
图13为本申请一些实施例提供的第一箱体和支架两者的位置关系图；
图14为本申请一些实施例提供的第一箱体、支架和电池单元三者的位置关系图；
图15为本申请一些实施例提供的支架的结构示意图；
图16为本申请一些实施例提供的箱体(第一箱体与支架通过第一锁紧件连接)的第一种可能的结构示意图；
图17为本申请一些实施例提供的箱体(第一箱体与支架通过第一锁紧件连接)的第二种可能的结构示意图；
图18为本申请一些实施例提供的箱体(第二箱体与第一箱体通过第二锁紧件连接)的结构示意图；
图19为本申请一些实施例提供的电池的局部视图；
图20为本申请一些实施例提供的箱体的组装方法的流程图；
图21为本申请又一些实施例提供的箱体的组装方法的流程图；
在附图中，附图并未按照实际的比例绘制。
标记说明：10-箱体；11-第一箱体；111-开口；112-第一安装孔；113-第三安装孔；12-容纳槽；13-密封胶；14-第二箱体；141-结合部； 1411-凹陷部；1411a-环形槽；1411b-出气孔；1412-缺口；1413-第四安装孔；142-本体；143-弯折结构；15-支架；151-第一周面；152-第二周面；153-台阶面；154-第一围体；155-第二围体；156-连接体；157-限位部；158-第二安装孔；159-边框；16-第一锁紧件；17-第一螺母；18-第一密封圈；19-第二锁紧件；20-第二螺母；21-第二密封圈；22-密封空间；30-电池单元；31-绝缘体；32-缓冲件；33-电池单体；100-电池；200-控制器；300-马达；1000-车辆。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请中的实施例，本领域普通技术人员在没有作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。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本申请实施例的描述中，需要说明的是，指示方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，或者是本领域技术人员惯常理解的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，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”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
发明人发现，在现有的箱体中，由于密封圈直接设置在第一箱体的端面与第二箱体的端面之间，箱体在振动过程中密封圈容易发生偏移，导致第一箱体与第二箱体之间的密封圈密封失效。
因此，本申请实施例提供一种用电设备、电池、箱体及箱体的组装方法，以改善现有的密封方式密封容易失效的情况。
本申请实施例提供一种用电设备，该用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、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；航天器包括飞机、火箭、航天飞机和 宇宙飞船等等；电动玩具包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电设备不做特殊限制。
以下实施例为了方便说明，以用电设备为车辆为例进行说明。
请参照图1，车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。
车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
本申请实施例提供的电池100是指包括一个或多个电池单元以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池100可以包括电池模块或电池包等。电池100一般包括用于封装一个或多个电池单元的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单元包括一个或多个电池单体。若电池单元包括多个电池单体，多个电池单体可经由汇流件而被串联和/或并联在一起。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方形电池单体和软包电池单体，本申请实施例对此也不限定。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为 碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔膜的材质可以为PP或PE等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
请参照图2，本申请实施例提供的电池100包括箱体10和电池单元30，电池单元30容纳于箱体10内，箱体10可为电池单元30提供长期稳定的密封环境。
请参照图3-图8，本申请实施例提供的箱体10包括第一箱体11、容纳槽12、密封胶13和第二箱体14。
第一箱体11具有开口111，容纳槽12沿开口111的周向设置，密封胶13容纳于容纳槽12内。第二箱体14具有周向布置的结合部141，结合部141用于在第二箱体14盖合在开口111上时伸入容纳槽12内并与密封胶13结合，以实现第一箱体11与第二箱体14的密封连接。
由于密封胶13容纳于容纳槽12内，容纳槽12对密封胶13起到限制作用，密封胶13在容纳槽12内不会出现偏移现象，不易出现密封失效的情况，保证密封胶13的密封性能。由于第二箱体14的结合部141延伸至容纳槽12内与密封胶13结合，容纳槽12对结合部141也可起到限位作用。在安装时，容纳槽12内注入密封胶13后，将第二箱体14的结合部141延伸至容纳槽12内与密封胶13结合，则实现第一箱体11与第二箱体14的密封，安装方便快速。在安装过程中，即使第二箱体14按压过量，容纳槽12内始终容纳有密封胶13，第二箱体14的结合部141与密封胶13始终能够保持在结合状态，不会因第二箱体14按压过量而造成密封失效。
其中，第一箱体11可以是第二箱体14的箱盖，也可以是第二箱体14为第一箱体11的箱盖。下述实施例均以第二箱体14为第一箱体11的箱盖为例进行说明，可理解的，第二箱体14位于第一箱体11的上侧。
第一箱体11为顶部设有开口111的空心结构。第一箱体11可以是长方体、圆柱体等。
第二箱体14还具有用于盖合于第一箱体11的开口111的本体142，结合部141固定于本体142的底部。结合部141可以是矩形环或圆形环等。
在第一箱体11为长方体的情况下，第二箱体14的本体142可以是矩形结构，第二箱体14的结合部141可以是矩形环；在第一箱体11为圆柱体的情况下，第二箱体14的本体142可以是圆形结构，第二箱体14的结合部141可以是圆形环。
需要说明的是，第二箱体14的结合部141与密封胶13结合，可理解为，容纳槽12内的密封胶13凝固后，密封胶13与结合部141连接在 一起。结合部141与密封胶13有多种结合形式。
请参照图3-图5，在本申请一些实施例中，结合部141插设于密封胶13内，以使结合部141与密封胶13结合，这种结构提高了结合部141与密封胶13结合后的牢固性，增大了密封胶13与结合部141的接触面积，提高了第一箱体11与第二箱体14的密封性。
其中，结合部141插入密封胶13时，结合部141有三种布置形式。请参照图3，第一种是，结合部141的内周壁和外周壁均与容纳槽12的侧壁存在距离；请参照图4，第二种是，结合部141的内周壁与容纳槽12的一个侧壁贴合；请参照图5，第三种是，结合部141的外周壁与容纳槽12的一个侧壁贴合。
结合部141插入密封胶13时，结合部141可以延伸至容纳槽12的底壁，结合部141也可以与容纳槽12的底壁存在一定距离。
请参照图6，在本申请一些实施例中，结合部141延伸于容纳槽12内的一端的端面刚好与密封胶13的上表面粘合，以使结合部141与密封胶13结合。
请参照图7、图8，在本申请一些实施例中，结合部141延伸至容纳槽12内的一端的端面上设有凹陷部1411，密封胶13延伸至凹陷部1411内，以使结合部141与密封胶13结合。
其中，结合部141的厚度可以与容纳槽12的宽度相等，即结合部141的内周壁和外周壁分别与容纳槽12的两个侧壁贴合。在将结合部141插入容纳槽12的过程中，结合部141将容纳槽12内的密封胶13挤压于凹陷部1411内。
凹陷部1411可以是多种结构。请参照图7，凹陷部1411可以是设置在结合部141内的环形槽1411a；请参照图8，凹陷部1411可以是设置在结合部141内的出气孔1411b，出气孔1411b可以是圆形孔、方形孔等。
本申请实施例中，容纳槽12设置于第一箱体11，容纳槽12可以有多种设置形式。请参照图9，容纳槽12可以设置在第一箱体11的外侧。请参照图10，容纳槽12也可以设置在第一箱体11的端面上。请参照图11，容纳槽12还可以设置在第一箱体11的内侧，以有效利用第一箱体11内部的空间，减少第一箱体11所占用的外部空间，提高电池100的能量密度。
请参照图12和图13，在本申请一些实施例中，箱体10还包括支架15，支架15设置在第一箱体11内，支架15与第一箱体11的内周壁共同限定出位于第一箱体11的内侧的容纳槽12(图13中示出)。
通过设置在箱体10内部的支架15与第一箱体11的内周壁共同限定出容纳槽12，结构简单，可使容纳槽12尽可能的靠近于第一箱体11的 四周的边缘。此外，设置于第一箱体11的支架15可对第一箱体11起到一定的加固作用。
继续参照图13，本实施例中，支架15独立于第一箱体11。可单独制造支架15和第一箱体11后，再将两者进行组装，可有效降低容纳槽12的成型难度，降低生产成本。
在一些实施例中，支架15的外周壁包括第一周面151和第二周面152。第一周面151与第一箱体11的内周壁贴合。第二周面152与第一箱体11的内周壁间隔设置，第二周面152为容纳槽12的一个侧壁，第一箱体11的内周壁为容纳槽12另一个侧壁。
上述结构中，支架15的第一周面151与第一箱体11的内周壁贴合，一方面，可实现支架15与第一箱体11的定位，可有效降低支架15在第一箱体11内晃动的可能性；另一方面，位于容纳槽12内的密封胶13不会从第一周面151与第一箱体11的内周壁之间溢出。
在一些实施例中，支架15的外周壁还包括台阶面153，台阶面153形成在第一周面151与第二周面152之间，台阶面153为容纳槽12的底壁。
支架15的台阶面153为容纳槽12的底壁，即容纳槽12的底壁(台阶面153)和一个侧壁(第二周面152)均位于支架15上，合理利用支架15，简化了第一箱体11的结构。
在其他实施例中，容纳槽12的底壁也可以设置在第一箱体11上。
示例性的，支架15为中空的框形结构，可有效减轻支架15的重量，同时，便于放置电路板(图中未示出)和线束(图中未示出)等部件。
在一些实施例中，支架15包括第一围体154、第二围体155和连接体156，第一围体154与第二围体155通过连接体156连接。第二围体155较第一围体154更靠近箱体10的开口111，第一周面151为第一围体154的外表面，第二周面152为第二围体155的外表面，台阶面153为连接体156的外表面。
在一些实施例中，请参照图14，支架15还包括限位部157，限位部157用于与位于第一箱体11内的电池单元30抵靠，以限制电池单元30向靠近第二箱体14的方向移动。
支架15的限位部157可对放置在第一箱体11内的电池单元30起到限制作用，以降低电池单元30在第一箱体11内晃动的可能性。也就是说，支架15具有两个作用，一个作用是与第一箱体11的内周壁共同限定出容纳槽12，另一个作用是将电池单元30限制在第一箱体11内。
在实际组装时，可先将电池单元30放置在第一箱体11内，再将 支架15安装在第一箱体11内，使限位部157压于电池单元30的顶部，从而将电池单元30限制在第一箱体11内。
示例性的，限位部157从连接体156向靠近第一箱体11的中心位置的方向延伸。
限位部157可以沿连接体156的周向整周布置，即限位部157为环形结构，比如，矩形环、圆形环。限位部157也可以沿连接体156的周向局部布置，比如，连接体156为矩形环结构，限位部157布置在连接体156的一个、两个或三个边上。
在一些实施例中，如图15所示，支架15为矩形环结构，支架15包括首尾依次连接的四个边框159。可理解的，支架15的第一围体154、第二围体155和连接体156均为矩形环结构。连接体156相对的两个边上均设有限位部157。
对于支架15而言，支架15可以是一体式结构，也可以是分体式结构。在支架15为分体式结构的情况下，可分别单独制造支架15的四个边框159，再通过焊接的方式将四个边框159连接在一起。四个边框159均可由板材通过弯折的方式成型。
若在支架15与第一箱体11未固定的情况下，向容纳槽12内注入密封胶13后，密封胶13对支架15和第一箱体11可起到一定的固定作用，即支架15通过密封胶13与第一箱体11粘接在一起。
在一些实施例中，请参照图16，为进一步提高支架15的牢固性，箱体10还可以包括第一锁紧件16，支架15与第一箱体11通过第一锁紧件16连接，以将支架15与第一箱体11连接固定，进一步降低电池单元30在第一箱体11内晃动的可能性。
在一些实施例中，第一箱体11上设有第一安装孔112，支架15上设有第二安装孔158，第一锁紧件16依次穿过第一安装孔112、密封胶13和第二安装孔158，以将支架15与第一箱体11连接。
由于第一锁紧件16依次穿过第一安装孔112、密封胶13和第二安装孔158，第一锁紧件16在将支架15与第一箱体11锁紧的同时，第一锁紧件16对密封胶13起到固定作用，防止密封胶13从容纳槽12内脱落。
在一些实施例中，密封胶13完全覆盖第一安装孔112和第二安装孔158，即使第一锁紧件16的周壁与第一安装孔112或第二安装孔158的孔壁存在间隙，密封胶13也可将该间隙遮挡或封堵，增加箱体10密封的可靠性。
第二安装孔158设置于支架15的第二围体155上。
需要说明的是，第一锁紧件16依次穿过第一安装孔112、密封胶13和第二安装孔158，其只表示第一锁紧件16同时穿过第一安装孔 112、密封胶13和第二安装孔158的最终状态，并不是仅仅表示在组装时，第一锁紧件16先穿过第一安装孔112，再穿过密封胶13，最后再穿过第二安装孔158。
在实际组装时，可以是先将密封胶13注入容纳槽12内后，再将第一锁紧件16穿过第一安装孔112和第二安装孔158，第一锁紧件16自然穿过密封胶13，最终实现对支架15与箱体10的连接固定；当然，也可以是，先将第一锁紧件16穿过第一安装孔112和第二安装孔158，实现对支架15与箱体10的连接固定后，再向容纳槽12内注入密封胶13。
示例性的，第一锁紧件16为螺钉，第一锁紧件16的端部螺接有第一螺母17，第一螺母17位于第一箱体11的内部，第一螺母17压紧于支架15的第二围体155。
在一个非限制性例子中，第一螺母17为一端开放的管状件，第一螺母17螺接于第一锁紧件16的外侧，第一螺母17开放的一端延伸至第二安装孔158内，第一螺母17延伸至第二安装孔158的部分与第二安装孔158的孔壁形成密封连接。第一螺母17延伸至第二安装孔158内的部分可以通过第一密封圈18与第二安装孔158的孔壁形成密封连接。
继续参照图16，在第一锁紧件16穿过密封胶13的情况下，第二箱体14的结合部141插入密封胶13内时，结合部141的端部可以是延伸至第一锁紧件16与容纳槽12的底壁之间的区域，在这种情况下，可在结合部141上开设用于避让第一锁紧件16的缺口1412(图12有示出)，避免结合部141与第一锁紧件16发生干涉，保证结合部141能够插入密封胶13的更深位置。此外，密封胶完全覆盖缺口1412，避免外界的介质(气体、液体等)从缺口1412进入到箱体10内，保证良好的密封性。
示例性的，在图16中，第二箱体14的本体142与结合部141为一体式结构，第二箱体14在本体142与结合部141的连接位置形成弯折结构143，结合部141插入密封胶13内时，本体142自然盖合于第一箱体11的开口111。
请参照图17，在第一锁紧件16穿过密封胶13的情况下，第二箱体14的结合部141插入密封胶13内时，结合部141的端部也可以是延伸至第一锁紧件16与容纳槽12的槽口之间的区域。
需要说明的是，支架15除了通过第一锁紧件16与箱体10连接固定外，支架15也可以通过其他方式与箱体10连接固定，比如，将支架15放置在箱体10内后，通过焊接的方式将两者固定。
当然，支架15除了可以独立于支架15以外，支架15也可以与第一箱体11一体成型，使得支架15与第一箱体11构成一个整体，提高支架15与第一箱体11之间的牢固性，支架15与第一箱体11之间不会出现间隙，容纳槽12不会出现漏胶的情况。
在支架15与第一箱体11一体成型的情况下，支架15中可不设置限位部157(图14中示出)，在将电池单元30(图14中示出)装入至第一箱体11内时，电池单元30可从支架15的中心位置放入至第一箱体11内。
请参照图18，在一些实施例中，箱体10还可以包括第二锁紧件19，第二箱体14与第一箱体11通过第二锁紧件19连接，以将第二箱体14与第一箱体11连接固定。这种结构提高了第二箱体14的结合部141与密封胶13结合后的牢固性。同时，这种结构也提高了第二箱体14与第一箱体11连接的稳定性。
其中，第一箱体11上设有第三安装孔113，第二箱体14上设有第四安装孔1413。第二锁紧件19依次穿过第三安装孔113和第四安装孔1413，以将第一箱体11与第二箱体14连接固定。
可选地，第三安装孔113较密封胶13更靠近开口111，可理解的，第三安装孔113高于密封胶13。这种结构可有效避免在向容纳槽12内注入密封胶13的过程中从第三安装孔113中漏胶的情况，同时，在穿设第二锁紧件19的过程中不会受到支架15的干扰。
示例性的，第四安装孔1413设置于第二箱体14的结合部141上。
示例性的，第二锁紧件19为螺钉，第二锁紧件19的端部螺接有第二螺母20，第二螺母20位于第一箱体11的内部，第二螺母20压紧于结合部141。
在一个非限制性例子中，第二螺母20为一端开放的管状件，第二螺母20螺接于第二锁紧件19的外侧，第二螺母20开放的一端延伸至第四安装孔1413内，第二螺母20延伸至第四安装孔1413的部分与第四安装孔1413的孔壁形成密封连接。第二螺母20延伸至第四安装孔1413内的部分可以通过第二密封圈21与第二安装孔158的孔壁形成密封连接。
请参照图19，本申请实施例中，电池单元30容纳于第一箱体11与第二箱体14共同限定的密封空间22内。
在一些实施例中，电池单元30的顶部抵靠于支架15的限位部157。电池单元30可以直接抵靠于限位部157，电池单元30也可以间接抵靠于限位部157。
在图19中，电池单元30间接抵靠于限位部157，电池单元30的顶部设有绝缘体31，绝缘体31用于对电池单元30进行限位，并起到绝缘的作用。
参照图19所示，在一些实施例中，绝缘体31的顶部设有缓冲件32，缓冲件32抵靠于限位部157。缓冲件32用于对绝缘体31起到缓冲作 用，避免绝缘体31与限位部157刚性接触，对电池单元30起到很好的减振作用。其中，缓冲件32可以是泡棉、橡胶等材质。
其中，电池单元30包括一个或多个电池单体33。若电池单元30包括多个电池单体33，多个电池单体33可经由汇流件(图中未示出)而被串联和/或并联在一起。图19示出了，电池单元30包括多个柱形电池单体的情况。
需要说明的是，本申请实施例提供的箱体10并不仅仅局限于用于容纳电池单元30，箱体10还可以用于容纳其他物件，比如，在运输过程需要防尘、防水的货物。
请参照图20，本申请实施例还提供一种箱体10的组装方法，该方法包括：
S100：向沿第一箱体11的开口111的周向设置的容纳槽12内注入密封胶13。
S200：将第二箱体14盖合在开口111上，使第二箱体14的周向布置的结合部141伸入容纳槽12内并与密封胶13结合。
通过上述方法可实现对箱体10的快速组装，组装好的箱体10具有很好的密封性。由于密封胶13注入在容纳槽12内，容纳槽12对密封胶13起到限制作用，密封胶13在容纳槽12内不会出现偏移现象，不易出现密封失效的情况，保证密封胶13的密封性能，第二箱体14的结合部141与密封胶13结合后，第二箱体14与第一箱体11可提供一长期稳定的密封环境。
如图21所示，在一些实施例中，箱体10的组装方法还包括：
S300：在第一箱体11内安装支架15，使第一箱体11的内周壁与支架15共同限定出沿第一箱体11的开口111的周向设置的容纳槽12。
将支架15放置在第一箱体11内后，可通过第一锁紧件16将支架15与第一箱体11锁紧，最终使第一箱体11的内周壁与支架15共同限定出沿第一箱体11的开口111的周向设置的容纳槽12。
在执行步骤S200后，可通过第二锁紧件19将第二箱体14与第一箱体11锁紧。
需要说明的是，在基于上述箱体10的组装方法在组装电池100时，可以是先将电池单元30放入第一箱体内，然后再执行步骤S300。在执行步骤S300过程中，可先将支架15的限位部157抵靠于电池单元30的顶部，再通过第一锁紧件16将支架15与第一箱体11锁紧。当然，也可以先执行步骤S300后，再将电池单元30放入至第一箱体11内，比如，先在第一箱体11内安装支架15，再将电池单元30从支架15的中心位置放入至第一箱体11内。
需要说明的是，在不冲突的情况下，本申请的上述各实施例及实 施例中的特征可以相互组合。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (17)

  1. 一种箱体，包括：
    第一箱体，具有开口；
    容纳槽，沿所述开口的周向设置；
    密封胶，容纳于所述容纳槽内；以及
    第二箱体，具有周向布置的结合部，所述结合部用于在所述第二箱体盖合在所述开口上时伸入所述容纳槽内并与所述密封胶结合，以实现所述第一箱体与所述第二箱体的密封连接。
  2. 根据权利要求1所述的箱体，其中，所述结合部用于伸入所述容纳槽内并插入所述密封胶中，以使所述结合部与所述密封胶结合。
  3. 根据权利要求1或2所述的箱体，其中，所述容纳槽位于所述第一箱体的内侧。
  4. 根据权利要求3所述的箱体，其中，所述箱体还包括：
    支架，设置在所述第一箱体内，所述第一箱体的内周壁与所述支架共同限定所述容纳槽。
  5. 根据权利要求4所述的箱体，其中，所述支架具有限位部；
    所述限位部用于与位于所述第一箱体内的电池单元抵靠，以限制所述电池单元向靠近所述第二箱体的方向移动。
  6. 根据权利要求4所述的箱体，其中，所述支架与所述第一箱体一体成型；或
    所述支架独立于所述第一箱体。
  7. 根据权利要求4或5所述的箱体，其中，所述箱体还包括第一锁紧件，所述支架与所述第一箱体通过所述第一锁紧件连接。
  8. 根据权利要求7所述的箱体，其中，所述第一箱体上设有第一安装孔，所述支架上设有第二安装孔；
    所述第一锁紧件依次穿过所述第一安装孔、所述密封胶和所述第二安装孔，以将所述支架与所述第一箱体连接。
  9. 根据权利要求8所述的箱体，其中，所述结合部上开设有用于避让所述第一锁紧件的缺口，所述密封胶完全覆盖所述缺口。
  10. 根据权利要求4、5或7-9任一项所述的箱体，其中，所述支架的外周壁包括：
    第一周面，与所述第一箱体的内周壁贴合；以及
    第二周面，所述第二周面与所述第一箱体的内周壁间隔设置，所述第二周面为所述容纳槽的一个侧壁，所述第一箱体的内周壁为所述容纳槽另一个侧壁。
  11. 根据权利要求10所述的箱体，其中，所述支架的外周壁还包括：
    台阶面，形成在所述第一周面与所述第二周面之间，所述台阶面为所述容纳槽的底壁。
  12. 根据权利要求1-11任一项所述的箱体，其中，所述箱体还包括第二锁紧件，所述第二箱体与所述第一箱体通过所述第二锁紧件连接。
  13. 根据权利要求12所述的箱体，其中，所述第一箱体上设有第三安装孔，所述第二箱体上设有第四安装孔；
    所述第二锁紧件依次穿过所述第三安装孔和所述第四安装孔，以将所述第一箱体与所述第二箱体连接；
    其中，所述第三安装孔较所述密封胶更靠近所述开口。
  14. 一种电池，包括：
    根据权利要求1-13任一项所述的箱体；以及
    电池单元，容纳于所述第一箱体与所述第二箱体共同限定的密封空间内。
  15. 一种用电设备，其中，包括根据权利要求14所述的电池。
  16. 一种箱体的组装方法，所述方法包括：
    向沿第一箱体的开口的周向设置的容纳槽内注入密封胶；
    将第二箱体盖合在所述开口上，使所述第二箱体的周向布置的结合部伸入所述容纳槽内并与所述密封胶结合。
  17. 根据权利要求16所述的箱体的组装方法，其中，所述方法还包括：
    在所述第一箱体内安装支架，使所述第一箱体的内周壁与所述支架共同限定出沿所述第一箱体的开口的周向设置的容纳槽。
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