WO2024000169A1 - 排液机构、电池箱体、电池以及用电装置 - Google Patents

排液机构、电池箱体、电池以及用电装置 Download PDF

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Publication number
WO2024000169A1
WO2024000169A1 PCT/CN2022/101954 CN2022101954W WO2024000169A1 WO 2024000169 A1 WO2024000169 A1 WO 2024000169A1 CN 2022101954 W CN2022101954 W CN 2022101954W WO 2024000169 A1 WO2024000169 A1 WO 2024000169A1
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WO
WIPO (PCT)
Prior art keywords
valve seat
battery
liquid
drainage
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/101954
Other languages
English (en)
French (fr)
Inventor
龙超
张文辉
陈兴地
王鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to CN202280007139.1A priority Critical patent/CN116636080B/zh
Priority to PCT/CN2022/101954 priority patent/WO2024000169A1/zh
Priority to EP22948291.4A priority patent/EP4546557A4/en
Priority to CN202320144038.0U priority patent/CN219643094U/zh
Publication of WO2024000169A1 publication Critical patent/WO2024000169A1/zh
Priority to US19/002,456 priority patent/US20250125511A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/363—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position the closure members being rotatable or pivoting
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/001—Actuating devices; Operating means; Releasing devices actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a 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
    • H01M50/249—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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H01M50/333—Spring-loaded vent valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell 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

  • This application relates to the field of battery technology, and in particular to a drain mechanism, a battery box, a battery and an electrical device.
  • the inside of the battery box In order to ensure the normal use of the battery, the inside of the battery box must be kept dry. Otherwise, if the liquid inside the battery box comes into contact with the electrical connection part of the battery, it will cause abnormal battery insulation, high-voltage short circuit, or even cause a fire and explosion.
  • the liquid inside the battery box needs to be discharged in time to avoid affecting the performance of the battery.
  • this application provides a drainage mechanism, including a valve seat, a valve core and a deformation part.
  • the valve seat has an installation cavity.
  • the valve core is assembled on the valve seat and is at least partially accommodated in the installation cavity.
  • the deformation part is accommodated in the installation cavity. It is installed in the cavity and connected between the valve seat and the valve core.
  • the deformation member is configured to deform after contacting the target liquid, causing separation between the valve core and the valve seat to form a drainage channel.
  • the deformation part When the deformation part contacts the target liquid, it deforms, and the volume of the deformation part changes, causing separation between the valve core and the valve seat to form a drainage channel. As a result, the target liquid can be discharged from the drainage channel in a timely manner, thereby realizing automatic discharge of the target liquid and ensuring the dryness of the environment where the drainage mechanism is installed.
  • the valve core is movably assembled on the valve seat, and the deformation member is configured to deform after contacting the target liquid, causing the valve core to move relative to the valve seat until the two separate to form a drainage channel.
  • the valve core includes a core shaft and a base.
  • the core shaft includes a first end.
  • the first end is an axial end of the core shaft.
  • the first end extends into the installation cavity and is connected to the base through the installation cavity.
  • the deformation member Contact between the valve seat and the base.
  • the mandrel can provide a supporting foundation for the base and deformation parts.
  • the base moves in the direction away from the valve seat, which ensures that the deformation amount of the deformation part in the axial direction of the mandrel is converted into the amount of movement between the base and the valve seat away from each other, so that the deformation part moves away from the valve seat.
  • a drainage channel is formed more quickly between the base and the valve seat, allowing the target liquid to be discharged faster.
  • the base is removably connected to the first end of the mandrel.
  • connection between the base and the mandrel can be made more flexible, and the installation process of the drain mechanism can be made more convenient.
  • the base since the base is detachably connected to the first end of the mandrel, when the deformation member contacts the target liquid and deforms, the base can drive the mandrel synchronously along the axial direction of the mandrel away from the valve under the action of the deformation force of the deformation member. The direction of the seat moves so that a drainage channel is formed more quickly between the base and the valve seat.
  • the liquid drainage mechanism includes a first sealing member, and the first sealing member is disposed on a surface of the base facing the valve seat.
  • the first sealing member is configured such that: when the deformation member does not contact the target liquid, the first sealing member is sealingly arranged between the valve seat and the base; after the deformation member contacts the target liquid, at least part of the first sealing member is in contact with the valve At least one of the seat and the base is separated, so that a drainage channel is formed between the valve seat and the base.
  • a limiting portion is formed on the mandrel, and the liquid discharge mechanism further includes an elastic member that presses between the limiting portion and the valve seat along the axial direction of the mandrel.
  • the elastic member can provide pre-tightening force between the core shaft and the valve seat, making the connection between the two closer.
  • the limiting portion is formed on a portion of the mandrel that protrudes outside the valve seat, and the limiting portion is protrudingly provided along the outer periphery of the mandrel.
  • the mandrel can be moved synchronously with the base in the direction away from the valve seat, so that all the deformation amount of the deformation part is converted into the drainage channel between the base and the valve seat, so that the target Liquid can be drained from the drain channel more quickly.
  • the deformation member is a liquid-absorbing expansion member.
  • the deformation part absorbs liquid and expands, its volume increases, which can push the base to move in a direction away from the valve seat, thereby separating the base and the valve seat to create a drainage channel, so that the target liquid can be smoothly discharged from the valve seat.
  • a bayonet is provided on the valve seat, and the bayonet is connected between the outside and the installation cavity.
  • the bayonet can be used as an inlet for the target liquid in the structure to be discharged to enter the installation cavity of the discharge mechanism, so that the target liquid comes into contact with the deformation part in the installation cavity, causing the deformation part to deform, thereby forming a deformable gap between the base and the valve seat. Drainage channel for target liquid to drain.
  • the present application provides a battery box, which includes a box body and a liquid draining mechanism.
  • the box body has an accommodating cavity, and the box body is provided with a connection hole connecting the outside and the accommodating cavity.
  • the drain mechanism is assembled in the connecting hole.
  • the liquid draining mechanism is the liquid draining mechanism described above.
  • the drainage mechanism When the drainage mechanism is assembled in the connection hole, the drainage mechanism can discharge the target liquid in the accommodation cavity, thereby keeping the accommodation cavity in a dry state and preventing the target liquid from soaking the electrical connection parts and causing battery insulation abnormalities, high-voltage short circuits or potential safety hazards such as fire and explosion, thereby improving the safety performance of the battery.
  • the liquid discharge mechanism can respond immediately when it comes into contact with the target liquid without manual operation, effectively improving the liquid discharge efficiency.
  • the drain mechanism includes a second sealing member sealingly connected between the box body and the valve seat.
  • a second sealing member sealingly connected between the box body and the valve seat.
  • the valve seat in the drainage mechanism is provided with a bayonet connected between the outside and the installation cavity.
  • the valve seat is installed in the connection hole through the bayonet, and one end of the bayonet is in contact with the cavity of the accommodation cavity. wall.
  • the bayonet can fix the drain mechanism to the bottom plate of the box body and seal it in the connection hole.
  • the bayonet can also serve as an inlet for the target liquid in the accommodation cavity to enter the installation cavity, so that the target liquid can enter the installation cavity and come into contact with the deformation member.
  • the box body includes a top cover, side plates and a bottom plate.
  • the top cover, side plates and bottom plate together form a receiving cavity, and the connection hole is opened on the bottom plate. Opening the connection hole on the bottom plate can be more conducive to discharging the target liquid in the accommodation cavity.
  • connection holes include at least two, and each connection hole is evenly arranged along the outer edge of the bottom plate. Therefore, different connection holes can realize the collection and discharge of the target liquid at different positions on the bottom plate, allowing the target liquid to be discharged more thoroughly.
  • a drainage part is provided on the bottom plate, and the drainage part is used to guide the target liquid to the connection hole.
  • the drainage part can drain the target liquid at various positions on the bottom plate and gather it around the connection hole, so that the target liquid can be discharged from the accommodation cavity from the connection hole.
  • the drainage portion is configured as a drainage groove, and the height of the bottom wall of the drainage groove gradually increases from one end connected to the connection hole to the other end. Therefore, the drainage groove can collect the target liquid, and cause the target liquid to flow toward the connecting hole in the drainage groove, thereby increasing the flow speed of the target liquid, thereby increasing the discharge speed of the target liquid.
  • the present application provides a battery, including a battery box as described above and a battery cell accommodated in a receiving cavity.
  • the present application provides an electrical device, including the battery as described above, and the battery is used to provide electrical energy.
  • the drainage mechanism can be used to seal the connection hole to keep the accommodation cavity in a sealed state and ensure that the battery in the accommodation cavity is kept dry.
  • the normal operation of the monomer when the target liquid enters the accommodation cavity, the deformation part in the drainage mechanism can deform after contact with the target liquid, thereby forming a drainage channel between the valve core and the valve seat at the first time, thus , the inside of the containment cavity is connected with the outside, so that the target liquid can be discharged from the containment cavity, keeping the environment in the containment cavity dry, and reducing the probability of safety accidents.
  • Figure 1 is a schematic structural diagram of a vehicle according to an embodiment
  • Figure 2 is a schematic diagram of the exploded structure of the battery described in one embodiment
  • Figure 3 is a schematic diagram of the exploded structure of a battery cell in one embodiment
  • Figure 4 is a partial enlarged view of the liquid discharge mechanism in an embodiment without absorbing liquid
  • Figure 5 is a partial enlarged view of the liquid discharge mechanism in a liquid-absorbing state in one embodiment
  • Figure 6 is a schematic structural diagram of the liquid discharge mechanism described in one embodiment
  • Figure 7 is a schematic diagram of the exploded structure of the battery box in one embodiment
  • Figure 8 is a top view of the battery box shown in Figure 7;
  • FIG. 9 is a cross-sectional view along the A-A direction in FIG. 7 .
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. . As the application fields of power batteries continue to expand, their market demand is also constantly expanding.
  • the inventor designed a battery box after in-depth research. By opening connection holes on the battery box , and a drainage mechanism is sealed in the connection hole, so that the drainage mechanism can be automatically opened as soon as the target liquid enters the battery box, and the target liquid can be discharged in a timely manner, ensuring that the inside of the battery box remains dry and reducing safety accidents. probability of occurrence.
  • the batteries described in the embodiments of this application are suitable for use in electrical devices, which may be but are not limited to mobile phones, laptop computers, electric toys, power tools, battery cars, electric vehicles, ships, spacecraft, etc.
  • electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc.
  • spacecraft can include airplanes, rockets, space shuttles, spaceships, etc.
  • an electric device 1000 according to an embodiment of the present application is used as an example.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • the battery 100 is disposed inside the 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 to power the vehicle 1000 , for example, the battery 100 may serve as an operating power source for the vehicle 1000 .
  • the vehicle 1000 may also include a controller 200 and a motor 300 .
  • the controller 200 is used to control the battery 100 to provide power to the motor 300 , for example, for starting, navigating and driving the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but also can be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .
  • the battery 100 includes a battery case 10 and battery cells 20 .
  • the battery cells 20 are accommodated in the battery case 10 .
  • the battery box 10 is used to provide accommodating space for the battery cells 20, and the battery box 10 can adopt a variety of structures.
  • the battery box 10 may include a first part 11 and a second part 12.
  • the first part 11 and the second part 12 cover each other.
  • the first part 11 and the second part 12 jointly define a space for accommodating battery cells. 20's accommodation cavity.
  • the second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure.
  • the first part 11 covers the open side of the second part 12 so that the first part 11 and the second part 12 jointly define a receiving cavity.
  • the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 is covered with the open side of the second part 12.
  • the battery box 10 formed by the first part 11 and the second part 12 can be in various shapes, such as a cylinder, a rectangular parallelepiped, etc.
  • the battery 100 there may be a plurality of battery cells 20, and the plurality of battery cells 20 may be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the plurality of battery cells 20 are connected in series and in parallel.
  • the plurality of battery cells 20 can be directly connected in series or in parallel or mixed together, and then the whole composed of the plurality of battery cells 20 is accommodated in the box 10 .
  • the battery 100 can also be in the form of a battery module in which a plurality of battery cells 20 are first connected in series, in parallel, or in a mixed manner, and then the plurality of battery modules are connected in series, in parallel, or in a mixed manner to form a whole, and are accommodated in the box 10 .
  • the battery 100 may also include other structures.
  • the battery 100 may further include a bus component for realizing electrical connections between multiple battery cells 20 .
  • Each battery cell 20 may be a secondary battery or a primary battery, or may be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.
  • the battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped or other shapes.
  • FIG. 3 is an exploded structural diagram of a battery cell 20 provided in some embodiments of the present application.
  • the battery cell 20 refers to the smallest unit that constitutes the battery.
  • the battery cell 20 includes an end cover 21 , a housing 22 , a cell assembly 23 and other functional components.
  • the end cap 21 refers to a component that covers the opening of the case 22 to isolate the internal environment of the battery cell 20 from the external environment.
  • the shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22 .
  • the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 21 is less likely to deform when subjected to extrusion and collision, so that the battery cell 20 can have higher durability. Structural strength and safety performance can also be improved.
  • the end cap 21 may be provided with functional components such as electrode terminals 21a.
  • the electrode terminal 21a can be used to electrically connect with the battery cell assembly 23 for outputting or inputting electric energy of the battery cell 20 .
  • the end cap 21 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold.
  • the end cap 21 can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not particularly limited in the embodiment of the present application.
  • an insulating member may also be provided inside the end cover 21 , and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cover 21 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber, etc.
  • the housing 22 is a component used to cooperate with the end cover 21 to form an internal environment of the battery cell 20 , wherein the formed internal environment can be used to accommodate the battery core assembly 23 , electrolyte and other components.
  • the housing 22 and the end cover 21 may be independent components, and an opening may be provided on the housing 22.
  • the end cover 21 covers the opening at the opening to form the internal environment of the battery cell 20.
  • the end cover 21 and the housing 22 can also be integrated.
  • the end cover 21 and the housing 22 can form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the inside of the housing 22 At this time, the end cover 21 covers the housing 22 again.
  • the housing 22 can be of various shapes and sizes, such as rectangular parallelepiped, cylinder, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the battery core assembly 23 .
  • the housing 22 may be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not particularly limited in the embodiments of the present application.
  • the battery cell assembly 23 is a component in the battery cell 100 where electrochemical reactions occur.
  • One or more battery core assemblies 23 may be contained within the housing 22 .
  • the cell assembly 23 is mainly formed by winding or stacking positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.
  • the portions of the positive electrode sheet and the negative electrode sheet that contain active material constitute the main body of the cell assembly 23 , and the portions of the positive electrode sheet and the negative electrode sheet that do not contain active material constitute the tabs respectively.
  • the positive electrode tab and the negative electrode tab can be located together at one end of the main body or respectively located at both ends of the main body.
  • the positive active material and negative active material react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop.
  • an embodiment of the present application provides a liquid drainage mechanism 14 , including a valve seat 141 , a valve core 142 and a deformation member 143 .
  • the valve seat 141 has an installation cavity 1411.
  • the valve core 142 is assembled on the valve seat 141 and is at least partially received in the installation cavity 1411.
  • the deformation member 143 is received in the installation cavity 1411 and connected between the valve seat 141 and the valve core 142.
  • the deformation member 143 is configured to deform after contacting the target liquid, causing the valve core 142 and the valve seat 141 to separate to form the drainage channel 144 .
  • the above-mentioned liquid draining mechanism 14 can be applied in the battery case 10 to realize the discharge of the target liquid in the accommodation cavity 131 of the battery case 10 .
  • the liquid discharge mechanism 14 can also be applied to other devices, which will not be described again here.
  • valve seat 141 refers to the component of the drain mechanism 14 that is fixedly connected to the external structure.
  • the valve seat 141 can realize the connection between the drain mechanism 14 and the battery case 10 so that the drain mechanism 14 is fixedly installed in the battery case 10 .
  • the valve core 142 refers to a component of the drain mechanism 14 that can cooperate with the valve seat 141 and be used to open and close the drain channel 144 .
  • the deformation member 143 refers to a component that deforms when it comes into contact with the target liquid, and separates the valve core 142 and the valve seat 141 to form the drainage channel 144 under the action of its own deformation amount.
  • the target liquid refers to a liquid substance that needs to be discharged through the liquid draining mechanism 14 , and may include one or more of water, cooling liquid, and other liquid substances.
  • the deformation member 143 when the deformation member 143 does not contact the target liquid, the volume of the deformation member 143 does not change. At this time, the valve core 142 and the valve seat 141 are tightly connected, that is, the drain mechanism 14 is in a closed state. As shown in FIG. 5 , when the deformation member 143 contacts the target liquid, it deforms, and the volume of the deformation member 143 changes, driving the valve core 142 and the valve seat 141 to separate and forming a drainage channel 144 , that is, the drainage mechanism 14 is open. state. As a result, the target liquid can be discharged from the drain channel 144 in time, realizing automatic discharge of the target liquid and ensuring the dryness of the environment where the drain mechanism 14 is installed.
  • the drain mechanism 14 when the drain mechanism 14 is used in the battery case 10, under normal circumstances, the accommodation cavity 131 of the battery case 10 is in a dry state. At this time, the deformation member 143 does not contact the target liquid, and the drain mechanism 14 is in a dry state. The closed state is to isolate the accommodation cavity 131 of the battery box 10 from the external environment.
  • the deformation member 143 contacts the target liquid and deforms. Under the deformation force of the deformation member 143, the drain mechanism 14 is opened, and the valve core 142 and the valve seat 141 are separated to form a drain channel 144. The target liquid can be discharged from the drain channel 144 out of the accommodation cavity 131.
  • liquid discharge mechanism 14 can be automatically opened under the deformation of the deformation member 143 when the deformation member 143 comes into contact with the target liquid, without manual operation, which effectively improves the liquid discharge efficiency.
  • volume change of the deformation member 143 can be larger or smaller, and through the change in volume, the drainage channel 144 between the valve core 142 and the valve seat 141 is closed from the closed state when the deformation member 143 is not deformed. Switch to the open state to facilitate the target liquid to be discharged from the drainage channel 144 .
  • valve core 142 is movably assembled on the valve seat 141, and the deformation member 143 is configured to deform after contacting the target liquid, causing the valve core 142 to move relative to the valve seat 141 to form a drainage channel therebetween. 144.
  • the valve core 142 can move relative to the valve seat 141.
  • the valve core 142 can move in a direction away from the valve seat 141 under the deformation force of the deformation member 143, so that the valve core 142 A drainage channel 144 is formed separately from the valve seat 141 for the target liquid to be discharged.
  • valve core 142 and the valve seat 141 when the valve core 142 and the valve seat 141 are relatively stationary, they can be tightly connected to ensure good sealing between the two.
  • a drainage channel 144 can be quickly formed between the two, so that the target liquid can be smoothly discharged through the drainage channel 144, and the drainage effect is better.
  • the valve core 142 includes a core shaft 1421 and a base 1422.
  • the core shaft includes a first end, and the first end is an axial end of the core shaft. The first end extends into the installation cavity 1411 and is connected to the base 1422 through the installation cavity 1411.
  • the deformation member 143 abuts between the valve seat 141 and the base 1422.
  • the deformation member 143 deforms after contacting the target liquid, and the base 1422 moves in a direction away from the valve seat 141 under the action of the deformation force until the two separate to form a drainage channel 144.
  • the core shaft 1421 is configured as a hollow shaft structure, and the center position of the base 1422 protrudes upward to form a connecting portion, and the connecting portion is inserted into the core shaft 1421 to achieve connection with the core shaft 1421 .
  • connection part and the core shaft 1421 may be elastically connected, for example, elastic connectors may be provided.
  • the initial state of the elastic connector is a compressed state, thereby providing a pre-tightening force for connecting the base 1422 and the core shaft 1421 to each other.
  • the compression amount of the elastic connecting member changes under the action of the deformation force, causing the mandrel 1421 and the base 1422 to separate, thereby gradually forming the drainage channel 144 so that the target liquid Liquid is drained from drain channel 144.
  • the core shaft 1421 can provide a supporting basis for the base 1422 and the deformation member 143.
  • the deformation member 143 is filled between the core shaft 1421 and the valve seat 141 along the circumferential direction of the core shaft 1421, and the deformation member 143 is axially filled along the core shaft 1421.
  • One end is in contact with the base 1422, and the other end is in contact with the valve seat 141, which can ensure that the deformation amount of the deformation member 143 in the axial direction of the core shaft 1421 is converted into the amount of movement between the base 1422 and the valve seat 141 away from each other. Therefore, the liquid drainage channel 144 is formed faster between the base 1422 and the valve seat 141, so that the target liquid can be drained faster.
  • base 1422 is removably connected to the first end of mandrel 1421.
  • the deformation member 143 deforms after contacting the target liquid, and the base 1422 drives the core shaft 1421 to move along its axial direction under the action of the deformation force until the base 1422 and the valve seat 141 separate to form a drainage channel 144.
  • the base 1422 and the first end of the core shaft 1421 can be connected through threads to achieve detachable connection between the two.
  • the connection between the base 1422 and the core shaft 1421 can be made more flexible, and the installation process of the drain mechanism 14 can be made more convenient.
  • the base 1422 when the base 1422 is detachably connected to the first end of the mandrel 1421, when the deformation member 143 contacts the target liquid and deforms, the base 1422 can drive the mandrel 1421 to synchronously move along the mandrel under the deformation force of the deformation member 143.
  • the axial direction of 1421 moves away from the valve seat 141, so that the drainage channel 144 is formed more quickly between the base 1422 and the valve seat 141.
  • the drain mechanism 14 includes a first seal 145 disposed on a surface of the base 1422 facing the valve seat 141 .
  • the first seal 145 is configured as:
  • the first sealing member 145 When the deformation member 143 does not contact the target liquid, the first sealing member 145 is sealingly disposed between the valve seat 141 and the base 1422; after the deformation member 143 contacts the target liquid, at least part of the first sealing member 145 is in contact with the valve seat 141 and the base. At least one of the valve seats 1422 is disengaged, so that the drain channel 144 is formed between the valve seat 141 and the base 1422 .
  • a first fixing groove can be opened on the surface of the base 1422 facing the valve seat 141, and the first seal 145 is limited in the first fixing groove. Thereby, the first seal 145 can be fixed to the base 1422.
  • the first seal 145 is configured as an elastic sealing ring, and correspondingly, the first fixing groove is configured as an annular groove provided around the connection portion.
  • the first sealing member 145 maintains a compressed state between the valve seat 141 and the base 1422, thereby ensuring a tight connection between the valve seat 141 and the base 1422 and improving sealing performance.
  • the first seal 145 can be made of elastic materials such as rubber, silicone, etc., which are not listed here. By providing the first seal 145, the sealing performance between the valve seat 141 and the base 1422 can be improved.
  • a limiting portion 1421a is formed on the core shaft 1421, and the liquid discharge mechanism 14 further includes an elastic member 146.
  • the elastic member 146 is pressed between the limiting portion 1421a and the valve seat 141 along the axial direction of the core shaft 1421.
  • the initial state of the elastic member 146 is a compressed state, thereby providing a pre-tightening force between the core shaft 1421 and the valve seat 141 .
  • the deformation member 143 does not contact the target liquid.
  • the base 1422 under the pretightening force of the elastic member 146, the base 1422 is tightly connected to the valve seat 141, and the deformation member 143 is tightly disposed between the base 1422 and the valve seat 141.
  • the base 1422 drives the core shaft 1421 to move synchronously, so that the compression amount of the elastic member 146 changes accordingly.
  • a drainage channel 144 is formed between the base 1422 and the valve seat 141, so that the target liquid can be discharged from the drainage channel 144.
  • the elastic member 146 can be configured as a spring or other elastic element, as long as it can provide pre-tightening force for the core shaft 1421 and the valve seat 141, which will not be described again here.
  • the limiting portion 1421a is formed on the portion of the core shaft 1421 that protrudes outside the valve seat 141, and the limiting portion 1421a is protrudingly provided along the outer circumference of the core shaft 1421.
  • the core shaft 1421 can be separated from the valve seat 141 simultaneously with the base 1422, so that all the deformation amount of the deformation member 143 is converted into liquid drainage between the base 1422 and the valve seat 141.
  • the channel 144 enables the target liquid to be discharged from the drainage channel 144 more quickly.
  • the deformation member 143 is a liquid-absorbing expansion member, that is, the deformation member 143 can absorb the target liquid, and its volume increases after absorbing the target liquid.
  • the deformation member 143 does not absorb the target liquid and its volume does not change.
  • the base 1422 is tightly connected to the valve seat 141, and the deformation member 143 is tightly disposed between the base 1422 and the valve seat 141.
  • the deformation member 143 When the deformation member 143 absorbs the target liquid, the volume expands, and the volume of the deformation member 143 becomes larger, and the base 1422 is pushed in the direction away from the valve seat 141 along the axial direction of the core shaft 1421 , so that the gap between the base 1422 and the valve seat 141 is A drainage channel 144 is separated and formed for the target liquid to be discharged.
  • the deformation member 143 can also be configured as a water-absorbing and dissolving member, that is, the deformation member 143 can absorb the target liquid, and its volume becomes smaller after absorbing the target liquid.
  • the deformation member 143 when the deformation member 143 is not in contact with the target liquid, the drainage channel 144 between the base 1422 and the valve seat 141 can be blocked by the deformation member 143 . After the deformation member 143 absorbs the target liquid, the volume of the deformation member 143 becomes smaller, thereby exposing the drainage channel 144 between the base 1422 and the valve seat 141 , and the target liquid can be discharged from the drainage channel 144 .
  • a bayonet 1412 is provided on the valve seat 141 , and the bayonet 1412 is connected between the outside and the installation cavity 1411 .
  • the bayonet 1412 can be used as an inlet for the target liquid in the structure to be discharged to enter the installation cavity 1411 of the discharge mechanism 14, so that the target liquid contacts the deformation member 143 in the installation cavity 1411, causing the deformation member 143 to deform, thereby causing the base 1422 to deform.
  • a drainage channel 144 for the target liquid to be discharged is formed between the valve seat 141 and the valve seat 141 .
  • one embodiment of the present application provides a battery box 10, which includes a box body 13 and a liquid drainage mechanism 14.
  • the box body 13 has a An accommodating cavity 131 is provided, and a connection hole 132 is formed on the box body 13 to communicate with the outside and the accommodating cavity 131 .
  • the liquid draining mechanism 14 is assembled in the connecting hole 132, and the liquid draining mechanism 14 is the liquid draining mechanism 14 as described above.
  • the box body 13 is configured as the main part of the battery box 10 , and can be enclosed by a top cover 133 , side plates 134 and a bottom plate 135 , and is enclosed to form a receiving cavity 131 .
  • the drain mechanism 14 When the drain mechanism 14 is assembled in the connection hole 132 , the drain mechanism 14 can discharge the target liquid in the accommodation cavity 131 , thereby keeping the accommodation cavity 131 in a dry state and preventing the target liquid from soaking the electrical connection parts and causing the battery 100 to There are safety hazards such as abnormal insulation, high-voltage short circuit, or fire and explosion, thereby improving the safety performance of the battery 100.
  • the liquid discharge mechanism 14 can respond immediately when it comes into contact with the target liquid without manual operation, effectively improving the liquid discharge efficiency.
  • the discharge mechanism 14 can also open and discharge the target liquid by itself without contacting the target liquid.
  • the discharge mechanism 14 is provided with a detection component (not shown in the figure) and a control component (Fig. (not shown), the detection component can detect the target liquid in the accommodation cavity 131 , and the detection content can be the actual humidity value in the accommodation cavity 131 , or the actual liquid level of the target liquid in the accommodation cavity 131 .
  • the detection part can transmit the detection signal to the control part, and then drive the valve core 142 to separate from the valve seat 141 through the control part, so that A drainage channel 144 is formed between the valve core 142 and the valve seat 141, and the target liquid can be discharged from the accommodation cavity 131 from the drainage channel 144.
  • the drain mechanism 14 includes a second seal 147 , and the second seal 147 is sealingly connected between the box body 13 and the valve seat 141 .
  • a second seal 147 is provided between the box body 13 and the valve seat 141 to tightly connect the box body 13 and the valve seat 141 .
  • the second sealing member 147 is configured as an elastic sealing ring, which is arranged around the valve seat 141 and maintained in a compressed state to tightly connect the valve seat 141 and the box body 13 .
  • the second seal 147 can be made of elastic materials such as rubber, silicone, etc., which are not listed here.
  • the rigid connection between the box body 13 and the valve seat 141 can be converted into an elastic connection, making the connection between the box body 13 and the valve seat 141 closer, and improving the sealing performance in the accommodation cavity 131.
  • the valve seat 141 is installed in the connection hole 132 through the bayonet 1412 , and one end of the bayonet 1412 is in contact with the wall of the accommodation cavity 131 .
  • the bayonet 1412 can fix the drain mechanism 14 to the bottom plate 135 of the box body 13 and seal it in the connection hole 132 .
  • the bayonet 1412 can also serve as an inlet for the target liquid in the accommodation cavity 131 to enter the installation cavity 1411, so that the target liquid can enter the installation cavity 1411 and contact the deformation member 143.
  • the box body 13 includes a top cover 133, side plates 134 and a bottom plate 135. Among them, the top cover 133 , the side plates 134 and the bottom plate 135 together form a receiving cavity 131 , and the connection hole 132 is opened in the bottom plate 135 .
  • the bottom plate 135 refers to the end plate located below when the battery box 10 is assembled on the electrical device.
  • the top cover 133 refers to the end plate located above the bottom plate 135 when the battery box 10 is assembled to the electrical device. Therefore, the side plate 134 refers to the end plate surrounded between the top cover 133 and the bottom plate 135 .
  • opening the connection hole 132 on the bottom plate 135 can be more conducive to discharging the target liquid in the accommodation cavity 131 .
  • connection holes 132 include at least two, and each connection hole 132 is evenly arranged along the outer edge of the bottom plate 135 . Therefore, different connection holes 132 can realize the collection and discharge of the target liquid at different positions on the bottom plate 135, allowing the target liquid to be discharged more thoroughly.
  • the bottom plate 135 is a rectangular plate.
  • four connection holes 132 can be provided, and they are respectively opened at the four corners of the bottom plate 135 to collect and discharge the target liquid at different positions in the accommodation cavity 131 .
  • the bottom plate 135 is provided with a drainage part (not shown in the figure), and the drainage part is used to guide the target liquid to the connection hole 132 .
  • the drainage part can drain the target liquid at various positions on the bottom plate 135 and collect it around the connection hole 132 , so that the target liquid can be discharged from the connection hole 132 into the accommodation cavity 131 .
  • the drainage portion is configured as a drainage groove, and the height of the bottom wall of the drainage groove gradually increases from one end connected to the connection hole 132 to the other end.
  • the drainage channel is set to have a certain slope, and the connecting hole 132 is located at the lowest point of the slope. Therefore, the target liquid can flow downward along the drainage groove, and the setting of the slope can increase the flow speed of the target liquid and increase the discharge speed of the target liquid.
  • the present application provides a battery 100 , including the battery box 10 as described above and the battery cells 20 accommodated in the accommodation cavity 131 .
  • the present application provides an electrical device, including the above-mentioned battery 100.
  • the battery 100 is used to provide electric energy.
  • the drain mechanism 14 can first be sealed in each connection hole 132 so that a sealed state is formed in the accommodation cavity 131 .
  • the accommodation cavity 131 always remains sealed.
  • external target liquid will enter the accommodation cavity 131 .
  • the target liquid accumulates on the bottom plate 135 .
  • the flow can be directed to each connection hole 132 through the guidance of the drainage portion on the bottom plate 135 .
  • the target liquid can flow into the installation cavity 1411 through the bayonet 1412 on the valve seat 141 and contact the deformation member 143 .
  • the deformation member 143 deforms after absorbing the target liquid and becomes larger in volume.
  • the base 1422 is pushed to move in a direction away from the valve seat 141 .
  • the base 1422 and the valve seat 141 are separated from each other.
  • the compression amount of the first seal 145 between the base 1422 and the valve seat 141 gradually decreases.
  • the compression amount of the first seal 145 is reduced to zero, the sealing interface between the base 1422 and the valve seat 141 fails, and the target liquid can flow out of the accommodation cavity 131 from the drainage channel 144 between the base 1422 and the valve seat 141 .

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Abstract

本申请涉及一种排液机构、电池箱体、电池以及用电装置，其中，排液机构包括：阀座(141)，具有一安装腔(1411)；阀芯(142)，装配于阀座(141)且至少部分收容于安装腔(1411)；以及形变件(143)，收容于安装腔(1411)并连接于阀座(141)与阀芯(142)之间；形变件(143)被配置为可在接触目标液体后产生形变，致使阀芯(142)与阀座(141)之间形成排液通道(144)。

Description

排液机构、电池箱体、电池以及用电装置 技术领域
本申请涉及电池技术领域，特别是涉及排液机构、电池箱体、电池以及用电装置。
背景技术
为确保电池的正常使用，电池箱体内部需保持干燥状态，否则，电池箱体内部液体与电池的电连接部分接触后，将会导致电池绝缘异常、高压短路，甚至引发起火爆炸。
因此，需要对电池箱体内部的液体进行及时排放，避免其影响电池的使用性能。
发明内容
基于此，有必要提供一种排液机构、电池箱体、电池以及用电装置，以便于及时排出电池箱体内部的液体，保持电池箱体内部干燥，确保电池安全使用。
第一方面，本申请提供一种排液机构，包括阀座、阀芯以及形变件，阀座具有一安装腔，阀芯装配于阀座上且至少部分收容于安装腔内，形变件收容于安装腔内并连接于阀座与阀芯之间。其中，形变件被配置为可在接触目标液体后产生形变，致使阀芯与阀座之间分离形成排液通道。
当形变件接触目标液体后产生形变，形变件体积发生变化，导致阀芯与阀座之间分离形成排液通道。由此，目标液体可及时从排液通道内排出，可实现目标液体的自动排出，确保排液机构所安装环境的干燥性。
在一些实施例中，阀芯活动装配于阀座上，形变件被配置为可在接触目标液体后产生形变，作用阀芯相对阀座运动至两者之间分离形成排液通道。
通过上述结构，在阀芯与阀座相对静止时，可以实现两者的紧密连接，以确保两者之间密封良好。当阀芯相对阀座运动时，能够在两者之间迅速形成排液通道，使目标液体能够通过排液通道顺利排出，使排液效果更好。
在一些实施例中，阀芯包括芯轴及底座，芯轴包括第一端，第一端为芯轴轴向的一端，第一端伸入安装腔内并通过安装腔与底座连接，形变件抵接于阀座与底座之间。
一方面，芯轴可以为底座及形变件提供支撑基础。另一方面，通过形变件的形变力作用，底座朝远离阀座的方向移动，可以确保形变件在芯轴轴向上的形变量转化为底座与阀座之间相互远离的移动量，从而在底座与阀座之间更快地形成排液通道，使目标液体能够更快排出。
在一些实施例中，底座与芯轴的第一端可拆卸地连接。
由此，可使底座与芯轴的连接更加灵活，使排液机构的安装过程更加便捷。此外，由 于底座与芯轴的第一端可拆卸连接，当形变件接触目标液体并产生形变时，在形变件的形变力作用下，底座可以带动芯轴同步沿芯轴的轴向朝远离阀座的方向移动，从而使底座与阀座之间更快速地形成排液通道。
在一些实施例中，排液机构包括第一密封件，第一密封件设置于底座面向阀座的表面。其中，第一密封件被配置为：在形变件未接触目标液体时，第一密封件密封设置于阀座与底座之间；在形变件接触目标液体后，第一密封件的至少部分与阀座及底座中的至少一者脱离，以使阀座与底座之间形成排液通道。通过设置第一密封件，可以提高阀座与底座之间的密封性。
在一些实施例中，芯轴上形成有限位部，排液机构还包括弹性件，弹性件沿芯轴的轴向抵压于限位部与阀座之间。
由此，弹性件能够为芯轴及阀座之间提供预紧力，使两者之间的连接更加紧密。
在一些实施例中，限位部形成于芯轴凸伸于阀座外的部分，且限位部沿芯轴外周凸出设置。
由此，可以在形变件的形变力作用下，使得芯轴跟随底座同步朝向远离阀座的方向移动，从而使形变件的形变量全部转化为底座与阀座之间的排液通道，使得目标液体能够从排液通道中更快速的排出。
在一些实施例中，形变件为吸液膨胀件。当形变件吸液膨胀后，其体积变大，从而能够推动底座朝向远离阀座的方向运动，从而使底座与阀座之间分离产生排液通道，使目标液体从阀座中顺利排出。
在一些实施例中，阀座上开设卡口，卡口连通于外部与安装腔之间。卡口可以作为待排放结构中的目标液体进入排液机构安装腔内的进入口，使目标液体与安装腔内的形变件接触，致使形变件产生形变，从而在底座与阀座之间形成可供目标液体排出的排液通道。
第二方面，本申请提供一种电池箱体，包括箱本体及排液机构，箱本体内具有一容纳腔，箱本体上开设连通于外部与容纳腔之间的连接孔。排液机构装配于连接孔内。其中，排液机构为上所述的排液机构。
当排液机构装配于连接孔内时，排液机构可实现容纳腔内目标液体的排放，从而使容纳腔内保持干燥状态，避免目标液体浸湿电连接部分而导致电池绝缘异常、高压短路或者起火爆炸等安全隐患，从而提高电池的安全性能。此外，排液机构可在接触到目标液体时立即响应，无需人为操作，有效提高排液效率。
在一些实施例中，排液机构包括第二密封件，第二密封件密封连接于箱本体与阀座之间。通过设置第二密封件，可以将箱本体与阀座之间的刚性连接转化为弹性连接，使箱本体与阀座之间连接更加紧密，提高容纳腔内的密封性。
在一些实施例中，排液机构中的阀座上开设连通于外部与安装腔之间的卡口，阀座通 过卡口安装于连接孔内，且卡口的一端抵接于容纳腔的腔壁。
一方面，卡口能够将排液机构固定至箱本体的底板上，并且使其密封连接于连接孔内。另一方面，卡口还能够作为容纳腔内的目标液体进入安装腔的进入口，以便于目标液体进入安装腔内并与形变件接触。
在一些实施例中，箱本体包括顶盖、侧板以及底板，顶盖、侧板以及底板共同围合形成容纳腔，连接孔开设于底板上。将连接孔开设于底板上，能够更有利于将容纳腔内的目标液体排出。
在一些实施例中，连接孔包括至少两个，各连接孔沿底板外缘均匀设置。由此，不同的连接孔能够实现底板上不同位置的目标液体的收集以及排放，能够使目标液体排放的更加彻底。
在一些实施例中，底板上设有引流部，引流部用于将目标液体引流至连接孔。引流部可以对底板上各个位置的目标液体进行引流，并使其聚集到连接孔周围，以便于目标液体从连接孔排出容纳腔。
在一些实施例中，引流部被构造为引流槽，引流槽的槽底壁高度由与连接孔相连的一端向另一端逐渐增大。由此，引流槽可以实现目标液体的收集，并且使目标液体在引流槽内朝向连接孔流动，提高目标液体的流动速度，从而提高目标液体的排出速度。
第三方面，本申请提供一种电池，包括如上所述的电池箱体及容纳于容纳腔内的电池单体。
第四方面，本申请提供一种用电装置，包括如上所述的电池，电池用于提供电能。
上述排液机构、电池箱体、电池以及用电装置，当电池箱体的容纳腔内保持干燥时，排液机构可用于密封连接孔，使容纳腔内保持密封状态，确保容纳腔内的电池单体的正常工作；当容纳腔内进入目标液体时，排液机构中的形变件与目标液体接触后能够产生形变，从而第一时间使阀芯与阀座之间形成排液通道，由此，容纳腔内部与外部连通，以便于将目标液体排出容纳腔，保持容纳腔内环境干燥，减少安全事故的发生概率。
附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1为一个实施例中所述的车辆的结构示意图；
图2为一个实施例中所述的电池的分解结构示意图；
图3为一个实施例中所述的电池单体的分解结构示意图；
图4为一个实施例中所述的排液机构未吸液状态下的局部放大图；
图5为一个实施例中所述的排液机构吸液状态下的局部放大图；
图6为一个实施例中所述的排液机构的结构示意图；
图7为一个实施例中所述的电池箱体的分解结构示意图；
图8为图7所示的电池箱体的俯视图；
图9为图7中沿着A-A方向的剖视图。
图中：1000、车辆；100、电池；200、控制器；300、马达；10、电池箱体；20、电池单体；11、第一部分；12、第二部分；13、箱本体；14、排液机构；21、端盖；22、壳体；23、电芯组件；21a、电极端子；131、容纳腔；132、连接孔；133、顶盖；134、侧板；135、底板；141、阀座；142、阀芯；143、形变件；144、排液通道；145、第一密封件；146、弹性件；147、第二密封件；1411、安装腔；1412、卡口；1421、芯轴；1422、底座；1421a、限位部。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时 针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，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实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
在电池的结构中，通过巴片将若干电池单体电连接并形成一个能量体，该能量体容纳于电池箱体的容纳腔内，从而形成一个完整的电池结构。为了确保电池的正常使用，需要保持容纳腔内的环境干燥。当容纳腔内进入水等液体时，液体将浸没电连接部分，容易导致电池绝缘异常、高压短路，甚至起火爆炸。
然而，本申请人发现，电池在实际使用时，通常会存在密封失效等问题。而当电池密封失效时，若电池安装环境中存在液体，则液体很容易进入容纳腔内，从而影响电池的安全性能。
具体地，例如当电池应用于车辆时，当车辆涉水时，外部的液体容易经过电池箱体进入容纳腔内，并浸没电连接部分，从而影响电池的安全性能。
当发生上述情况时，通常人为打开电池箱体，将内部的液体排出。然而，这种方式不仅操作繁琐，而且无法在电池箱体进水的第一时间进行排水，从而容易因排水不及时而造成安全事故。
基于以上考虑，为了实现电池箱体内部液体的排放，以及解决电池箱体内部液体排放不及时的问题，发明人经过深入研究，设计了一种电池箱体，通过在电池箱体上开设连接孔，并在连接孔内密封设置排液机构，使得排液机构能够在电池箱体内部进入目标液体的第一时间自动开启，及时实现目标液体的排放，确保电池箱体内部保持干燥，减少安全事故的发生概率。
本申请实施例描述的电池适用于用电装置，用电装置可以为但不限于手机、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以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，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。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。
请参照图2，图2为本申请一些实施例提供的电池100的爆炸图。电池100包括电池箱体10和电池单体20，电池单体20容纳于电池箱体10内。其中，电池箱体10用于为电池单体20提供容纳空间，电池箱体10可以采用多种结构。在一些实施例中，电池箱体10可以包括第一部分11和第二部分12，第一部分11与第二部分12相互盖合，第一部分11和第二部分12共同限定出用于容纳电池单体20的容纳腔。第二部分12可以为一端开口的空心结构，第一部分11可以为板状结构，第一部分11盖合于第二部分12的开口侧，以使第一部分11与第二部分12共同限定出容纳腔；第一部分11和第二部分12也可以是均为一侧开口的空心结构，第一部分11的开口侧盖合于第二部分12的开口侧。当然，第一部分11和第二部分12形成的电池箱体10可以是多种形状，比如，圆柱体、长方体等。
在电池100中，电池单体20可以是多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。多个电池单体20之间可直接串联或并联或混联在一起，再将多个电池单体20构成的整体容纳于箱体10内。当然，电池100也可以是多个电池单体20先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体10内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体20之间的电连接。
其中，每个电池单体20可以为二次电池或一次电池，还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。电池单体20可呈圆柱体、扁平体、长方体或其它形状等。
请参照图3，图3为本申请一些实施例提供的电池单体20的分解结构示意图。电池单体20是指组成电池的最小单元。如图3，电池单体20包括有端盖21、壳体22、电芯组件23以及其他的功能性部件。
端盖21是指盖合于壳体22的开口处以将电池单体20的内部环境隔绝于外部环境的部件。不限地，端盖21的形状可以与壳体22的形状相适应以配合壳体22。可选地，端盖21可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖21在受挤压碰撞时就不易 发生形变，使电池单体20能够具备更高的结构强度，安全性能也可以有所提高。端盖21上可以设置有如电极端子21a等的功能性部件。电极端子21a可以用于与电芯组件23电连接，以用于输出或输入电池单体20的电能。在一些实施例中，端盖21上还可以设置有用于在电池单体20的内部压力或温度达到阈值时泄放内部压力的泄压机构。端盖21的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖21的内侧还可以设置有绝缘件，绝缘件可以用于隔离壳体22内的电连接部件与端盖21，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
壳体22是用于配合端盖21以形成电池单体20的内部环境的组件，其中，形成的内部环境可以用于容纳电芯组件23、电解液以及其他部件。壳体22和端盖21可以是独立的部件，可以于壳体22上设置开口，通过在开口处使端盖21盖合开口以形成电池单体20的内部环境。不限地，也可以使端盖21和壳体22一体化，具体地，端盖21和壳体22可以在其他部件入壳前先形成一个共同的连接面，当需要封装壳体22的内部时，再使端盖21盖合壳体22。壳体22可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。具体地，壳体22的形状可以根据电芯组件23的具体形状和尺寸大小来确定。壳体22的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电芯组件23是电池单体100中发生电化学反应的部件。壳体22内可以包含一个或更多个电芯组件23。电芯组件23主要由正极片和负极片卷绕或层叠放置形成，并且通常在正极片与负极片之间设有隔膜。正极片和负极片具有活性物质的部分构成电芯组件23的主体部，正极片和负极片不具有活性物质的部分各自构成极耳。正极极耳和负极极耳可以共同位于主体部的一端或是分别位于主体部的两端。在电池的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳连接电极端子以形成电流回路。
请参阅图4及图5，本申请一实施例提供了一种排液机构14，包括阀座141、阀芯142以及形变件143。其中，阀座141具有一安装腔1411。阀芯142装配于阀座141上且至少部分收容于安装腔1411内，形变件143收容于安装腔1411内并连接于阀座141与阀芯142之间。此外，形变件143被配置为可在接触目标液体后产生形变，致使阀芯142与阀座141之间分离形成排液通道144。
上述的排液机构14可以应用于电池箱体10中，以实现电池箱体10容纳腔131内目标液体的排放。当然，排液机构14也可以应用于其他装置中，在此不做赘述。
需要说明的是，阀座141是指排液机构14中与外部结构固定连接的部件。例如，当排液机构14应用于电池箱体10中时，阀座141可实现排液机构14与电池箱体10的连接，使排液机构14固定设置于电池箱体10中。
阀芯142是指排液机构14中能够与阀座141配合，用于启闭排液通道144的部件。
形变件143是指，接触目标液体时会产生形变，并在自身形变量的作用下使阀芯142 与阀座141之间分离形成排液通道144的部件。
此外，目标液体是指需要通过排液机构14进行排放的液体物质，可以包括水、冷却液和其他液体物质中的一种或多种。
如图4所示，当形变件143未接触目标液体时，形变件143的体积不发生变化，此时阀芯142与阀座141之间紧密连接，即排液机构14处于关闭状态。如图5所示，当形变件143接触目标液体后产生形变，形变件143的体积发生变化，驱使阀芯142与阀座141之间分离并形成排液通道144，即排液机构14处于开启状态。由此，目标液体可及时从排液通道144内排出，实现目标液体的自动排出，确保排液机构14所安装环境的干燥性。
具体地，当排液机构14应用于电池箱体10中时，正常情况下，电池箱体10的容纳腔131内为干燥状态，此时形变件143未接触目标液体，则排液机构14处于关闭状态，以将电池箱体10的容纳腔131与外部环境隔绝。当电池箱体10内部进入目标液体时，形变件143与目标液体接触并产生形变。在形变件143的形变力作用下，排液机构14开启，阀芯142与阀座141之间分离形成排液通道144，目标液体可从排液通道144排出容纳腔131外。由此，保持容纳腔131内的环境干燥，避免目标液体浸湿容纳腔131内的电连接部分而导致电池100绝缘异常、高压短路或者起火爆炸等安全隐患，从而提高电池100的安全性能。
此外，排液机构14可在形变件143与目标液体接触时，在形变件143的形变作用下自动开启，无需人为操作，有效提高排液效率。
需要说明的是，形变件143的体积变化可以是变大或者变小，并通过体积的变化使阀芯142与阀座141之间的排液通道144由形变件143未产生形变时的闭合状态切换至开启状态，以便于目标液体从排液通道144中排出。
在一些实施例中，阀芯142活动装配于阀座141上，形变件143被配置为可在接触目标液体后产生形变，作用阀芯142相对阀座141运动至两者之间形成排液通道144。
阀芯142能够相对阀座141运动，当形变件143接触目标液体后体积发生改变时，阀芯142能够在形变件143的形变力作用下朝向远离阀座141的方向运动，从而使得阀芯142与阀座141之间分离形成排液通道144，以供目标液体排出。
通过上述结构，在阀芯142与阀座141相对静止时，可以实现两者的紧密连接，以确保两者之间密封良好。当阀芯142相对阀座141运动时，能够在两者之间迅速形成排液通道144，使目标液体能够通过排液通道144顺利排出，使排液效果更好。
在一些实施例中，阀芯142包括芯轴1421及底座1422，芯轴包括第一端，第一端为芯轴轴向的一端。第一端伸入安装腔1411内并通过安装腔1411与底座1422连接，形变件143抵接于阀座141与底座1422之间。
其中，形变件143在接触目标液体后产生形变，底座1422在形变力作用下朝远离阀座141的方向移动至两者之间分离形成排液通道144。
具体地，芯轴1421被构造为空心轴体结构，底座1422的中心位置向上凸起形成连接部，连接部插入芯轴1421中，以实现与芯轴1421的连接。
进一步地，连接部与芯轴1421之间可以通过弹性连接，例如设置弹性连接件。弹性连接件的初始状态为压缩状态，由此，提供底座1422与芯轴1421相互连接的预紧力。当形变件143与目标液体接触后体积改变时，弹性连接件的压缩量在形变力的作用下发生改变，使得芯轴1421与底座1422之间分离，从而逐渐形成排液通道144，以使目标液体从排液通道144中排出。
此外，芯轴1421可以为底座1422及形变件143提供支撑基础，形变件143沿芯轴1421的周向环绕填充于芯轴1421与阀座141之间，并且形变件143沿芯轴1421轴向的一端抵接于底座1422上，另一端抵接于阀座141上，可以确保形变件143在芯轴1421轴向上的形变量转化为底座1422与阀座141之间相互远离的移动量，从而在底座1422与阀座141之间更快地形成排液通道144，使目标液体能够更快排出。
在一些实施例中，底座1422与芯轴1421的第一端可拆卸地连接。其中，形变件143在接触目标液体后产生形变，底座1422在形变力作用下带动芯轴1421沿其轴向移动，至底座1422与阀座141之间分离形成排液通道144。
具体地，底座1422与芯轴1421的第一端可通过螺纹连接，以实现两者的可拆卸连接。由此，可使底座1422与芯轴1421的连接更加灵活，使排液机构14的安装过程更加便捷。
此外，底座1422与芯轴1421的第一端可拆卸连接时，当形变件143接触目标液体并产生形变时，在形变件143的形变力作用下，底座1422可以带动芯轴1421同步沿芯轴1421的轴向朝远离阀座141的方向移动，从而使底座1422与阀座141之间更快速地形成排液通道144。
在一些实施例中，排液机构14包括第一密封件145，第一密封件145设置于底座1422面向阀座141的表面。其中，第一密封件145被配置为：
在形变件143未接触目标液体时，第一密封件145密封设置于阀座141与底座1422之间；在形变件143接触目标液体后，第一密封件145的至少部分与阀座141及底座1422中的至少一者脱离，以使阀座141与底座1422之间形成排液通道144。
为了便于固定第一密封件145，可在底座1422面向阀座141的表面上开设第一固定槽，并将第一密封件145限位于第一固定槽内。由此，可将第一密封件145固定至底座1422上。
进一步地，为了确保阀座141与底座1422之间的密封性，将第一密封件145设置为一弹性密封圈，相对应的，第一固定槽被构造为环绕连接部设置的环形槽。当形变件143未接触目标液体时，第一密封件145在阀座141与底座1422之间保持压缩状态，从而能够确保阀座141与底座1422之间的紧密连接，提高密封性。
具体地，第一密封件145可以采用橡胶、硅胶等弹性材料，在此不一一列举。通过设置第一密封件145，可以提高阀座141与底座1422之间的密封性。
在一些实施例中，芯轴1421上形成有限位部1421a，排液机构14还包括弹性件146，弹性件146沿芯轴1421的轴向抵压于限位部1421a与阀座141之间。
具体地，弹性件146的初始状态为压缩状态，从而能够为芯轴1421及阀座141之间提供预紧力。
如图7所示，初始状态时，形变件143未接触目标液体。此时，在弹性件146的预紧力作用下，底座1422与阀座141紧密连接，并且使形变件143紧密设置于底座1422与阀座141之间。如图8所示，当形变件143与目标液体接触而发生形变时，底座1422在形变件143的形变力作用下与阀座141分离。与此同时，底座1422带动芯轴1421同步移动，使得弹性件146的压缩量随之发生变化。底座1422与芯轴1421同步移动过程中，底座1422与阀座141之间形成排液通道144，使得目标液体可从排液通道144中排出。
需要说明的是，弹性件146可以设置为弹簧，或者其他弹性元件，只要能够为芯轴1421及阀座141提供预紧力即可，在此不做赘述。
在一些实施例中，限位部1421a形成于芯轴1421凸伸于阀座141外的部分，且限位部1421a沿芯轴1421外周凸出设置。
通过上述结构，可以在形变件143的形变作用下，使得芯轴1421跟随底座1422同步与阀座141分离，从而使形变件143的形变量全部转化为底座1422与阀座141之间的排液通道144，使得目标液体能够从排液通道144中更快速的排出。
在一些实施例中，形变件143为吸液膨胀件，即形变件143能够吸收目标液体，并且在吸收目标液体后体积变大。
具体地，初始状态下，形变件143未吸收目标液体，其体积不发生变化。此时，在弹性件146的预紧力作用下，底座1422与阀座141紧密连接，并且使形变件143紧密设置于底座1422与阀座141之间。
当形变件143吸收目标液体后，体积膨胀，形变件143的体积变大，并且沿芯轴1421的轴向推动底座1422朝向远离阀座141的方向运动，从而使底座1422与阀座141之间分离并形成排液通道144，以供目标液体排出。可以理解地，形变件143也可以设置为吸水溶解件，即形变件143能够吸收目标液体，并且在吸收目标液体后体积变小。
具体地，当形变件143未与目标液体接触时，可通过形变件143对底座1422与阀座141之间的排液通道144进行封堵。当形变件143吸收目标液体后，形变件143体积变小，从而使得底座1422与阀座141之间的排液通道144露出，目标液体可从排液通道144中排出。
请参看图6，在一些实施例中，阀座141上开设卡口1412，卡口1412连通于外部与安装腔1411之间。卡口1412可以作为待排放结构中的目标液体进入排液机构14安装腔1411 内的进入口，使目标液体与安装腔1411内的形变件143接触，致使形变件143产生形变，从而在底座1422与阀座141之间形成可供目标液体排出的排液通道144。
请参阅图7、图8以及图9，基于与上述排液机构相同的构思，本申请一实施例提供了一种电池箱体10，包括箱本体13及排液机构14，箱本体13内具有一容纳腔131，箱本体13上开设连通于外部与容纳腔131之间的连接孔132。排液机构14装配于连接孔132内，并且排液机构14为如上所述的排液机构14。
箱本体13被构造为电池箱体10的主体部分，可由顶盖133、侧板134以及底板135共同围合而成，并且围合形成容纳腔131。当排液机构14装配于连接孔132内时，排液机构14可实现容纳腔131内目标液体的排放，从而使容纳腔131内保持干燥状态，避免目标液体浸湿电连接部分而导致电池100绝缘异常、高压短路或者起火爆炸等安全隐患，从而提高电池100的安全性能。此外，排液机构14可在接触到目标液体时立即响应，无需人为操作，有效提高排液效率。
在一些其他的实施例中，排液机构14也可以通过不接触目标液体的方式实现自身开启并排放目标液体，例如，排放机构14中设置检测件(图中未示出)及控制件(图中未示出)，检测件可以对容纳腔131内的目标液体进行检测，检测内容可以为容纳腔131内的实际湿度值，也可以为容纳腔131内目标液体的实际液位高度。当实际湿度值大于预设湿度值或者当实际液位高度高于预设液位高度时，检测件可将检测信号传递至控制件，进而通过控制件驱动阀芯142与阀座141分离，使得阀芯142与阀座141之间形成排液通道144，目标液体可以从排液通道144排出容纳腔131。
请再次参看图4及图5，在一些实施例中，排液机构14包括第二密封件147，第二密封件147密封连接于箱本体13与阀座141之间。
由于箱本体13与阀座141之间为刚性结构，两者连接时会产生间隙。因此，为了确保初始状态下容纳腔131内的密封性，在箱本体13与阀座141之间设置第二密封件147，以使箱本体13与阀座141之间紧密连接。
进一步地，将第二密封件147设置为一弹性密封圈，环绕设置于阀座141上，并且保持压缩状态，以使阀座141与箱本体13之间紧密连接。
具体地，第二密封件147可以采用橡胶、硅胶等弹性材料，在此不一一列举。通过设置第二密封件147，可以将箱本体13与阀座141之间的刚性连接转化为弹性连接，使箱本体13与阀座141之间连接更加紧密，提高容纳腔131内的密封性。
在一些实施例中，阀座141通过卡口1412安装于连接孔132内，且卡口1412的一端抵接于容纳腔131的腔壁。一方面，卡口1412能够将排液机构14固定至箱本体13的底板135上，并且使其密封连接于连接孔132内。另一方面，卡口1412还能够作为容纳腔131内的目标液体进入安装腔1411的进入口，以便于目标液体进入安装腔1411内并与形变件143 接触。
请再次参看7及图8，进一步地，箱本体13包括顶盖133、侧板134以及底板135。其中，顶盖133、侧板134以及底板135共同围合形成容纳腔131，连接孔132开设于底板135上。
底板135是指，当电池箱体10装配至用电装置上时，位于下方的端板。顶盖133是指，当电池箱体10装配至用电装置上时，与底板135相对的位于上方的端板。由此，侧板134是指，围设于顶盖133与底板135之间的端板。
当电池箱体10装配至用电装置上时，由于底板135处于装配状态的最低处，因此，将连接孔132开设于底板135上，能够更有利于将容纳腔131内的目标液体排出。
在一些实施例中，连接孔132包括至少两个，各连接孔132沿底板135外缘均匀设置。由此，不同的连接孔132能够实现底板135上不同位置的目标液体的收集以及排放，能够使目标液体排放的更加彻底。
进一步地，当电池箱体10为矩形结构时，底板135为矩形板。此时，可将连接孔132设置为四个，且分别开设于底板135的四个角落位置，以便于收集并排放容纳腔131内不同位置的目标液体。
在一些实施例中，底板135上设有引流部(图中未示出)，引流部用于将目标液体引流至连接孔132。引流部可以对底板135上各个位置的目标液体进行引流，并使其聚集到连接孔132周围，以便于目标液体从连接孔132排出容纳腔131。
进一步地，引流部被构造为引流槽，引流槽的槽底壁高度由与连接孔132相连的一端向另一端逐渐增大。具体地，将引流槽设置为具有一定坡度，并且连接孔132位于坡度最低点。由此，目标液体可以沿引流槽向下流动，坡度的设置可以提高目标液体的流动速度，提高目标液体的排出速度。
基于与上述电池箱体10相同的构思，本申请提供一种电池100，包括如上所述的电池箱体10及容纳于容纳腔131内的电池单体20。
基于与上述电池100相同的构思，本申请提供一种用电装置，包括如上所述的电池100，电池100用于提供电能。
当本申请中一些排液机构14应用于电池箱体10时，可以首先将排液机构14密封设置于每一个连接孔132内，使得容纳腔131内形成密封状态。电池100正常使用时，容纳腔131内始终保持密封状态。当电池箱体10上其他位置密封失效时，外部的目标液体将进入容纳腔131内。此时，目标液体积累在底板135上。可通过底板135上的引流部的引导，流向各连接孔132。
当目标液体流动至连接孔132处，目标液体可通过阀座141上的卡口1412流入安装腔1411内，并且与形变件143接触。形变件143吸收目标液体后发生形变，体积变大。由此， 推动底座1422朝向远离阀座141的方向移动。此时，底座1422与阀座141之间相互远离。当底座1422与阀座141之间的距离逐渐增大时，底座1422与阀座141之间的第一密封件145的压缩量逐渐减小。当第一密封件145的压缩量减小为零时，底座1422与阀座141之间的密封界面失效，目标液体可从底座1422与阀座141之间的排液通道144流出容纳腔131。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种排液机构，包括：
    阀座，具有一安装腔；
    阀芯，装配于所述阀座上且至少部分收容于所述安装腔内；以及
    形变件，收容于所述安装腔内并连接于所述阀座与所述阀芯之间；
    其中，所述形变件被配置为可在接触目标液体后产生形变，致使所述阀芯与所述阀座之间分离形成排液通道。
  2. 根据权利要求1所述的排液机构，其中，所述阀芯活动装配于所述阀座上，所述形变件被配置为可在接触所述目标液体后产生形变，作用所述阀芯相对所述阀座运动至两者之间分离形成所述排液通道。
  3. 根据权利要求2所述的排液机构，其中，所述阀芯包括芯轴及底座，所述芯轴包括第一端，所述第一端为所述芯轴轴向的一端，所述第一端伸入所述安装腔内并通过所述安装腔与所述底座连接，所述形变件抵接于所述阀座与所述底座之间。
  4. 根据权利要求3所述的排液机构，其中，所述底座与所述芯轴的所述第一端可拆卸地连接。
  5. 根据权利要求3所述的电池箱体，其中，所述排液机构包括第一密封件，所述第一密封件设置于所述底座面向所述阀座的表面；所述第一密封件被配置为：
    在所述形变件未接触所述目标液体时，所述第一密封件密封设置于所述阀座与所述底座之间；
    在所述形变件接触所述目标液体后，所述第一密封件的至少部分与所述阀座及所述底座中的至少一者脱离，以使所述阀座与所述底座之间形成所述排液通道。
  6. 根据权利要求1-5任意一项所述的排液机构，其中，所述芯轴上形成有限位部，所述排液机构还包括弹性件，所述弹性件沿所述芯轴的轴向抵压于所述限位部与所述阀座之间。
  7. 根据权利要求6所述的排液机构，其中，所述限位部形成于所述芯轴凸伸于所述阀座外的部分，且所述限位部沿所述芯轴外周凸出设置。
  8. 根据权利要求1-5任意一项所述的排液机构，其中，所述形变件为吸液膨胀件。
  9. 根据权利要求1-8任意一项所述的排液机构，其中，所述阀座上开设卡口，所述卡口连通于外部与所述安装腔之间。
  10. 一种电池箱体，包括：
    箱本体，其内具有一容纳腔，所述箱本体上开设连通于外部与所述容纳腔之间的连接孔；及
    排液机构，装配于所述连接孔；
    其中，所述排液机构为权利要求1-8任意一项所述的排液机构。
  11. 根据权利要求10所述的电池箱体，其中，所述排液机构包括第二密封件，所述第二密封件密封连接于所述箱本体与所述阀座之间。
  12. 根据权利要求10所述的电池箱体，其中，所述排液机构中的所述阀座上开设连通于外部与所述安装腔之间的卡口，所述阀座通过所述卡口安装于所述连接孔内，且所述卡口的一端抵接于所述容纳腔的腔壁。
  13. 根据权利要求10所述的电池箱体，其中，所述箱本体包括顶盖、侧板以及底板，所述顶盖、所述侧板以及所述底板共同围合形成所述容纳腔，所述连接孔开设于所述底板上。
  14. 根据权利要求13所述的电池箱体，其中，所述连接孔包括至少两个，各所述连接孔沿所述底板外缘均匀设置。
  15. 根据权利要求13所述的电池箱体，其中，所述底板上设有引流部，所述引流部用于将所述目标液体引流至所述连接孔。
  16. 根据权利要求15所述的电池箱体，其中，所述引流部被构造为引流槽，所述引流槽的槽底壁高度由与所述连接孔相连的一端向另一端逐渐增大。
  17. 一种电池，包括如权利要求10-16任意一项所述的电池箱体及容纳于所述容纳腔内的电池单体。
  18. 一种用电装置，包括如权利要求17所述的电池，所述电池用于提供电能。
PCT/CN2022/101954 2022-06-28 2022-06-28 排液机构、电池箱体、电池以及用电装置 Ceased WO2024000169A1 (zh)

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