WO2023060593A1 - 电池箱体、电池及用电装置 - Google Patents

电池箱体、电池及用电装置 Download PDF

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Publication number
WO2023060593A1
WO2023060593A1 PCT/CN2021/124207 CN2021124207W WO2023060593A1 WO 2023060593 A1 WO2023060593 A1 WO 2023060593A1 CN 2021124207 W CN2021124207 W CN 2021124207W WO 2023060593 A1 WO2023060593 A1 WO 2023060593A1
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WIPO (PCT)
Prior art keywords
battery
outer plate
balance valve
balance
management component
Prior art date
Application number
PCT/CN2021/124207
Other languages
English (en)
French (fr)
Inventor
苗慧敏
陈彬彬
陈智明
王庆
Original Assignee
宁德时代新能源科技股份有限公司
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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 JP2022551387A priority Critical patent/JP7519454B2/ja
Priority to CN202180092242.6A priority patent/CN116762217A/zh
Priority to KR1020227031541A priority patent/KR20230054607A/ko
Priority to EP21930593.5A priority patent/EP4191764A4/en
Priority to PCT/CN2021/124207 priority patent/WO2023060593A1/zh
Priority to US17/947,080 priority patent/US20230123699A1/en
Publication of WO2023060593A1 publication Critical patent/WO2023060593A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—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
    • 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
    • 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
    • H01M50/394—Gas-pervious parts or elements
    • 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 battery will generate heat during use, which will cause the temperature of the battery to rise. If the temperature of the battery is too high, it will cause the battery to spontaneously ignite or explode. Therefore, it is necessary to dissipate heat from the battery.
  • the inventors of the present application found in the research that the current The cooling effect of the cooling solution is poor, and it will cause problems such as abnormal noise during the cooling process.
  • the embodiment of the present application proposes a battery box, a battery and an electrical device.
  • the embodiment of the present application proposes a battery box, including: a box frame, a heat management component, and an outer plate; the heat management component is arranged on one side of the box frame for temperature regulation of the battery
  • the outer plate is arranged adjacent to the heat management component, and is used to cover the heat management component on the box frame, and the outer plate is provided with a balance valve, and the balance valve is used to The cavity between the outer plate and the thermal management component is in communication with external air.
  • the air inside the cavity can be connected with the outside air.
  • the air inside the cavity diffuses outward through the balance valve, which reduces the air pressure inside the cavity.
  • the pressure balances the pressure inside and outside the cavity, thereby avoiding the deformation of the outer plate due to the internal pressure of the cavity, and also avoiding the looseness between the outer plate and the heat management components to produce abnormal noise.
  • balance valves are arranged at both ends of the outer plate. Setting the balance valve at both ends of the outer plate can quickly balance the air pressure on both ends of the outer plate and reduce the impact of the air pressure difference between the two ends of the cavity on the outer plate.
  • a fixing hole is provided on the outer plate;
  • the balance valve includes a balance valve body, and a fixing structure is arranged on the balance valve body, and the fixing structure cooperates with the fixing hole to fix the balance valve on the side of the outer panel. In this way, the installation and maintenance of the balance valve are facilitated, and the use is convenient.
  • the body of the balance valve is provided with a vent hole, and the vent hole and the fixing hole form a vent channel.
  • the vent hole and the fixing hole form a vent channel, so that the air in the cavity communicates with the outside, which is beneficial to the rapid balance of the air pressure inside and outside the cavity.
  • the fixing structure is a buckle structure; the buckle structure extends along the periphery of the vent hole toward the direction of the outer plate, and engages with the fixing hole on the outer plate.
  • the balance valve By setting the fixing structure as a buckle structure, the balance valve can be conveniently fastened to the outer plate.
  • the buckle structure it can also be easily disassembled, which facilitates subsequent maintenance.
  • the strain value of the snap structure is greater than 15%. Under this strain value, the buckle structure is not easy to break during subsequent use, which ensures the service life of the balance valve.
  • the fixing structure is a thread structure; the thread structure extends along the periphery of the vent hole toward the outer plate, and the inner wall of the fixing hole on the outer plate is correspondingly provided with an internal thread structure.
  • the internal thread structure matches and is screwed into the fixing hole.
  • the battery case further includes a gasket; the gasket is arranged between the balance valve and the outer plate, and is used for sealingly connecting the balance valve and the outer plate.
  • the sealing gasket is squeezed between the balance valve body and the outer plate, and the sealing gasket is elastically deformed to squeeze the fixed structure. The pressure can provide a better sealing effect between the balance valve and the outer plate.
  • a ventilation groove around the ventilation hole there is a ventilation groove around the ventilation hole; the ventilation groove, the ventilation hole and the fixing hole jointly form a ventilation channel .
  • the ventilation groove By arranging the ventilation groove around the ventilation hole, the gas in the cavity is not directly connected to the ventilation hole, but needs to pass through the ventilation groove and then enter the ventilation hole, so the ventilation channel is bent through the ventilation groove to avoid dust or debris Block the ventilation holes.
  • the battery case further includes a balance film; the balance film cover is arranged above the air hole.
  • the balance film By setting the balance film, the liquid outside the cavity can be prevented from entering the cavity through the fixing hole and the vent hole, and at the same time, the circulation of the gas inside the cavity and the outside gas will not be affected, and the effect of waterproof and breathable is achieved.
  • the balance membrane is a waterproof and breathable composite material.
  • the liquid outside the cavity can be prevented from entering the cavity through the fixing hole and the vent hole, and at the same time, the circulation of the gas inside the cavity and the outside gas will not be affected, and the effect of waterproof and breathable is achieved.
  • the sealing gasket is ring-shaped, the circumference of the inner ring of the ring is smaller than the circumference of the outer ring of the balance membrane, and the circumference of the ring-shaped outer ring is larger than the circumference of the outer ring of the balance membrane , so that the sealing area between the sealing gasket and the balance membrane overlaps, so as to achieve a better sealing effect.
  • the battery box further includes a protective cover; the protective cover is provided at the end of the balancing valve away from the outer plate.
  • Setting the protective cover can effectively prevent the balance film of the balance valve from being damaged during assembly, transportation and storage. At the same time, setting the protective cover can also prevent the dust or debris in the cavity from falling directly above the air hole. Block the ventilation channels.
  • the protective cover is disposed on the positioning protrusion. In this way, the protective cover can cover the balance membrane, the balance valve body and the sealing gasket on the outer plate, which has a compact structure and occupies a small volume.
  • the embodiment of the present application also proposes a battery, including a battery cell and the battery case provided in the above embodiments, and the battery cell is disposed in the battery case.
  • the embodiments of the present application also provide an electrical device, including the battery provided in the above embodiments, where the battery is used to provide power.
  • Figure 5 is an exploded view of the balance valve and the outer plate fixed in some embodiments of the present application.
  • Fig. 6 is a partial enlarged view of the balance valve provided by some embodiments of the present application.
  • Fig. 7 provides another structural diagram of a balancing valve for some embodiments of the present application.
  • Fig. 8 is a sectional view of a balance valve provided by some embodiments of the present application.
  • Fig. 9 is a top view of the balance valve provided by some embodiments of the present application.
  • Battery unit 1000 vehicle 2000, battery 2100, controller 2200, motor 2300, battery box 1100, upper box 110, lower box 120, box frame 100, heat management component 200, outer plate 300, fixing hole 310 , balance valve 400, protective cover 410, balance film 420, balance valve body 430, vent hole 432, vent groove 434, buckle structure 436, thread structure 437, positioning protrusion 438, gasket 440, first balance valve 500, The second balancing valve 600 and the third balancing valve 700 .
  • connection In the description of this application, it should be noted that, unless otherwise clearly stipulated and limited, the terms “installation”, “connection”, “connection” and “attachment” should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediary, and it can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • Multiple appearing in this application refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two groups), and “multi-piece” refers to more than two (Includes two pieces).
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.
  • the main problem causing battery safety is that the battery will cause temperature rise during operation. If the temperature is not properly controlled, it will The battery may spontaneously ignite or even explode. Therefore, how to control the battery temperature and timely dissipate heat from the battery when the battery temperature rises becomes more and more important.
  • the main heat dissipation schemes include air cooling, water cooling, and other methods of heat dissipation.
  • the heat management components are arranged inside the battery box to dissipate heat from the battery as a part of the battery box.
  • the heat management components include water cooling. boards and heat sinks, etc.
  • the thermal management component is arranged on the non-top part of the battery, such as the bottom or the side.
  • the thermal management components at these positions can avoid the high-voltage electrical cavity on the top of the battery, preventing the pipeline from being damaged or the liquid flowing into the high-voltage electrical cavity due to condensation.
  • a sealing design will be made between the thermal management component and the battery outer plate located outside it.
  • the traditional balancing valve is fixed on the sealed casing by screws, and it is often necessary to open a through hole on the installation casing for bolt assembly.
  • the installation efficiency of bolt assembly is low and the post-processing process is complicated.
  • the traditional balance valve product has a large height and size, and it is difficult to install it in the small and sealed space of the thermal management components and the battery outer plate. If the balance valve is arranged on the outside of the outer plate, the overall appearance consistency of the battery will be destroyed, the volume of the battery will be increased, and the energy density of the battery will be reduced.
  • a balance valve is provided in the battery box, and the balance valve is sealed with the outer plate of the battery box, so as to ensure the sealing performance of the battery box.
  • the balance valve can communicate the heat dissipation space sealed in the battery case with the external space, so that the internal hot air can be dissipated through the balance valve.
  • it can take away the heat inside the battery box, on the other hand, it also realizes the balance of the internal and external air pressure, avoiding the deformation of the outer plate caused by the internal and external pressure difference, and also avoiding the deformation caused by the internal and external air pressure difference during the use of the battery. Abnormal noise.
  • the battery case and the battery disclosed in the embodiments of the present application can be used, but not limited to, in electrical devices such as vehicles, ships, or aircrafts.
  • the battery case disclosed in this application and the battery can be used to form a part of the power supply system of the electric device, which is beneficial to improve the heat dissipation performance of the battery case and further improve the safety of the electric device.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 2000 as an electric device according to an embodiment of the present application is taken as an example for description.
  • FIG. 1 is a schematic structural diagram of a vehicle 2000 provided in an embodiment of the present application.
  • the vehicle 2000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 2000 is provided with a battery 2100 , and the battery 2100 may be provided at the bottom, head, or tail of the vehicle 2000 .
  • the battery 2100 can be used to supply power to the vehicle 2000 , for example, the battery 2100 can be used as an operating power source of the vehicle 2000 .
  • the vehicle 2000 may further include a controller 2200 and a motor 2300 , the controller 2200 is used to control the battery 2100 to supply power to the motor 2300 , for example, for starting, navigating and running the vehicle 2000 .
  • the battery 2100 can not only be used as an operating power source for the vehicle 2000 , but also can be used as a driving power source for the vehicle 2000 to provide driving power for the vehicle 2000 instead of or partially replacing fuel oil or natural gas.
  • FIG. 2 is an exploded view of a battery 2100 provided in an embodiment of the present application.
  • the battery 2100 includes a battery case 1100 and a battery cell 1000 , and the battery cell 1000 is accommodated in the battery case 1100 .
  • the battery 2100 mentioned in the 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 2100 mentioned in this application may include a battery module or a battery pack or the like.
  • There may be multiple battery cells 1000 and the multiple battery cells 1000 may be connected in series, parallel or mixed.
  • the mixed connection means that the multiple battery cells 1000 are both connected in series and in parallel.
  • the battery case 1100 is used to provide accommodating space for the battery cells 1000, and the battery case 1100 can adopt various structures.
  • the battery case 1100 may include an upper case 110 and a lower case 120, the upper case 110 and the lower case 120 cover each other, and the upper case 110 and the lower case 120 jointly define a The accommodation space of the battery cell 1000 .
  • FIG. 3 is a structural diagram of a battery box 1100 provided in an embodiment of the present application, including a box frame 100 , a heat management component 200 and an outer plate 300 .
  • the heat management component 200 is disposed on one side of the box frame 100 for temperature regulation of the battery.
  • the outer plate 300 is arranged adjacent to the thermal management component 200, and is used to cover the thermal management component 200 on the box frame 100, and the outer plate 300 is provided with a balance valve 400, the The balancing valve 400 is used to communicate the cavity between the outer plate 300 and the heat management component 200 with the outside air.
  • the box frame 100 is used to carry battery cells, and is usually made of stainless steel or other hard materials. After the battery cells are fixed on the box frame 100 , the box frame 100 The battery is provided on the body of the car to provide power to the vehicle.
  • the heat management component 200 is generally disposed under the box frame 100 and is attached to the box frame 100 so as to achieve a better heat dissipation effect.
  • the heat management component 200 includes a water cooling plate, a heat dissipation plate or other heat dissipation components.
  • the water-cooled plate uses liquid water to dissipate heat.
  • the water-cooled plate includes an inlet and an outlet of liquid water. Water pipes are arranged on the water-cooled plate. By utilizing the heat absorption performance of liquid water, cold water is input into the water Pipes, in the process of transporting water, take away the heat.
  • the heat dissipation plate is generally made of a material that is easy to absorb heat, and quickly removes heat by being in contact with a heat source.
  • the solutions proposed in the present application may be applicable to various thermal management solutions.
  • the outer plate 300 is arranged on the other side of the heat management component 200 , and is first sealed and fixed with the heat management component 200 , and then sealed and fixed with the box frame 100 together.
  • the outer plate 300 and the heat management component 200 , as well as the outer plate 300 and the box frame 100 need to be arranged together in a sealed manner.
  • the outer plate 300 , the thermal management component 200 and the box frame 100 can be sealed and fixed by screws, or they can be arranged together directly by welding.
  • the balance valve 400 is arranged on the outer plate 300, on the one hand, it can isolate the external water from entering the cavity formed by the outer plate 300 and the heat management component 200, on the other hand, it can communicate the air inside the cavity with the outside air.
  • the air pressure inside the cavity is high, the air inside the cavity diffuses outwards through the balance valve 400, which reduces the pressure inside the cavity and realizes the balance of the pressure inside and outside the cavity, thus avoiding the external plate 300 due to the cavity
  • the deformation caused by the internal pressure also avoids the looseness between the outer plate 300 and the thermal management component 200 and the generation of abnormal noise.
  • the balance valve 400 in order to make the balance valve 400 better balance the cavity between the outer plate 300 and the heat management component 200 and the external air pressure, it can be installed on the outer plate A plurality of balance valves 400 are arranged on the 300 , and the balance valves 400 are respectively arranged at both ends of the outer plate 300 .
  • the first balance valve 500 and the third balance valve 700 are respectively located at both ends of the outer plate 300, and setting the balance valve 400 at both ends of the outer plate 300 is beneficial to balance the gas received by the two ends of the outer plate 300.
  • Pressure especially when the area of the battery box is relatively large, due to the different heating conditions of different battery cells, it will cause a relatively large difference in the local heating of the battery box, resulting in an imbalance of internal gas pressure and thermal management components.
  • the air pressure in the cavity between 200 and the outer plate 300 is unbalanced.
  • the balance valve 400 is installed at both ends of the outer plate 300 to quickly balance the air pressure at both ends of the outer plate 300 and reduce the air pressure difference between the two ends of the cavity. The impact on the outer panel 300.
  • the balancing valve 400 may also be arranged at the center of the outer plate 300 .
  • the second balance valve 600 is disposed at the center of the outer plate 300 .
  • the central position of the outer panel 300 refers to the non-edge position of the outer panel 300 .
  • the balance valve 400 is arranged at the center of the outer plate 300, which can take into account the air pressure in each area in the cavity, so that the gas in each area can Quick flow.
  • the balance valve 400 can also be arranged at the two ends and the center of the outer plate 300 at the same time, so as to realize the rapid circulation of the gas in the cavity and the rapid balance of the internal and external gas pressure.
  • the balance valve 400 can be directly welded on the outer plate 300 by welding.
  • the balance valve 400 is fixed on the outer plate 300 by welding, and when the balance valve 400 breaks down, there is a problem of inconvenient maintenance.
  • the embodiment of the present application proposes a setting method. As shown in FIG. 5, the embodiment of the present application sets a fixing hole 310 on the outer plate 300, and a fixing structure is set on the balance valve body 430, and the fixing structure is connected with the fixing hole 310.
  • the balance valve 400 is fixed on one side of the outer plate 300 by cooperation.
  • the balance valve body 430 is provided with a ventilation hole 432 , and the ventilation hole 432 and the fixing hole 310 together form a ventilation channel.
  • a breather hole 432 is provided on the balance valve body 430, and the breather hole 432 forms a breather channel with the fixing hole 310, so that the air in the cavity communicates with the outside, It is conducive to the rapid balance of air pressure inside and outside the cavity.
  • the vent hole 432 on the balance valve body 430 is set at the center of the balance valve body 430 , and can be set at the same axis as the fixing hole 310 on the outer plate 300 or staggered.
  • the ventilation channels can be bent to a certain extent in the balance valve body 430, so as to prevent the gas in the cavity from directly impacting the balance valve 400 and damaging the balance valve 400.
  • the balance valve 400 can improve the service life of the balance valve 400 .
  • the fixing structure is a buckle structure 436; the buckle structure 436 extends along the periphery of the vent hole 432 toward the direction of the outer panel 300, and is compatible with the outer panel 300.
  • the fixing holes 310 are engaged with each other.
  • the fixed structure on the balance valve body 430 is set as a buckle structure 436, the buckle structure 436 is shown in Figure 5, and the buckle structure 436 is along the
  • the ventilation holes 432 are extended around the outer panel 300 , and one end of the buckle structure 436 is provided with a protrusion outwardly, and the protrusion is used to cooperate with the fixing hole 310 and be snapped into the fixing hole 310 .
  • the buckle structure 436 is a cantilever beam arm structure.
  • the buckle structure 436 may include a plurality of cantilever beam arm structures, and a plurality of cantilever beam arm structures.
  • the arm structure is dispersedly set.
  • the locking arm length L of the buckle structure 436 is greater than or equal to the thickness of the outer plate 300
  • H is the thickness of the locking arm
  • the deformation Y is the height of the protrusion.
  • the setting of the deformation Y is related to the balance valve 400 locking
  • the balance valve 400 can be conveniently buckled on the outer panel 300.
  • the buckle structure 436 passes through the fixing hole 310 and engages with the fixing hole 310 to facilitate the installation of the balance valve 400 .
  • the buckle structure 436 it can also be easily disassembled, which facilitates subsequent maintenance.
  • the strain value of the buckle structure 436 is greater than 15%. In the embodiment of the present application, it is obtained through the applicant's experiments that determining the strain value of the buckle structure 436 to be greater than 15% can achieve a better fixing effect. Under this strain value, the buckle structure 436 It is not easy to be broken during subsequent use, which ensures the service life of the balance valve 400.
  • the buckle structure 436 can be made of materials such as PCABS alloy, PPE, PP or PA.
  • the width of the fixing hole 310 is greater than the width of the buckle structure 436 .
  • the embodiment of the present application sets the width of the fixing hole 310 to be larger than the buckle structure 436, so that after the balance valve 400 is snapped into the fixing hole 310 through the buckle structure 436, there is still space in the fixing hole 310 for gas to pass through.
  • the fixing hole 310 can be used to install the balance valve 400, and together with the vent hole 432 constitutes a ventilating channel, there is no need to set the vent hole 432 on the outer plate 300, which simplifies the structure and can achieve a good ventilating effect.
  • the fixing structure is set as a thread structure 437, and the thread structure 437 is extended along the periphery of the ventilation hole 432 toward the direction of the outer plate 300, and the inner wall of the fixing hole 310 on the outer plate 300 is correspondingly set An internal thread structure 437 is provided, and the thread structure 437 cooperates with the internal thread structure 437 and is screwed into the fixing hole 310 .
  • the balance valve 400 When fixing the balance valve 400, it is only necessary to twist the balance valve 400 to screw the balance valve 400 into the The installation and fixation of the balance valve 400 can be realized by opening the above-mentioned fixing hole 310 .
  • the inside of the fixing hole 310 is set as a hollow structure, and the hollow structure is connected with the balance valve body 430
  • the ventilation holes 432 are connected to form a ventilation channel.
  • the battery box further includes a gasket 440, the gasket 440 is arranged between the balance valve 400 and the outer plate 300, and is used to seal the balance valve 400 and the outer plate 300 connect.
  • a gasket 440 is provided between the balance valve body 430 and the outer plate 300 .
  • the gasket 440 is squeezed between the balance valve body 430 and the outer plate 300, and the gasket 440 is elastically deformed , compressing the fixed structure can achieve a better sealing effect between the balance valve 400 and the outer plate 300 .
  • the gasket 440 is made of elastic material, which can ensure that the sealing level between the balance valve body 430 and the outer plate 300 reaches IPX8 level.
  • glue can be applied before connecting, between the sealing gasket 440 and the balance valve body 430 and between the sealing gasket 440 and the outer plate 300, glue can be applied first, so that it can achieve a better sealing effect. Sealing effect.
  • the compression of the gasket 440 is 40%-60%.
  • the compression amount of the gasket 440 needs to be limited within a certain range, and the compression amount is too small or too large, and the Facilitate sealing.
  • the applicant obtained through experiments that the optimal compression amount is 40%-60%. If the compression amount is too large, it will cause overpressure of the gasket 440 and affect the service life of the gasket 440. If the compression If the amount is too small, the seal will not be tight.
  • a ventilating groove 434 is provided around the vent hole 432; the vent groove 434, the vent hole 432 and the vent hole 432
  • the fixing holes 310 together form a ventilation channel.
  • Ventilation groove 434 is arranged around vent hole 432, is communicated with described vent hole 432 and fixing hole 310 by vent groove 434, forms vent passage jointly, because vent groove 434 is arranged on the periphery of vent hole 432, the gas in the cavity is not directly To communicate with the air hole 432 , it is necessary to enter the air hole 432 through the air groove 434 , so the air passage is bent through the air groove 434 to prevent dust or debris from blocking the air hole 432 .
  • positioning protrusions 438 are arranged at intervals around the ventilation holes 432 , and the positioning protrusions 438 are arranged at intervals, and the ventilation grooves 434 are formed between the positioning protrusions 438 .
  • the ventilation groove 434 communicates with the ventilation hole 432, so that the balance valve 400 has a more compact structure and a smaller volume.
  • a balance film 420 is also included, and the balance film 420 is covered above the air hole 432.
  • the balance film 420 has the function of waterproof and breathable, usually made of e-PTFE film material, the waterproof level reaches the IPX8 standard level, and the balance film 420 is bonded to the balance valve body 400 by thermocompression welding. Above the hole 432, the vent hole 432 is covered.
  • the balance film 420 is arranged above the vent holes 432, and isolates the vent holes 432 and the vent grooves 434. On the one hand, the air in the cavity can flow out through the vent holes 434 and through the vent holes 432, and on the other hand, it prevents the air from entering the fixed holes.
  • the liquid in the 310 and the vent hole 432 enters the cavity through the balance film 420, which has a good effect of waterproof and breathable.
  • the balance membrane 420 is a waterproof and breathable composite material.
  • the balance film 420 has the function of waterproof and breathable, and is usually made of e-PTFE film material, and the waterproof level reaches the standard level of IPX8.
  • the ventilation hole 432 is covered.
  • the gasket 440 is ring-shaped, and the circumference of the inner ring of the ring is smaller than the circumference of the outer ring of the balance membrane 420 , and the circumference of the outer ring of the ring is larger than the outer circumference of the balance membrane 420 . circle circumference.
  • the battery case further includes a protective cover 410 , and the protective cover 410 covers the end of the balancing valve 400 away from the outer plate 300 .
  • a protective cover 410 is provided on the end of the balance valve 400 away from the outer plate 300 to protect the balance film 420, At the same time, by providing the protective cover 410 , it can also prevent the dust or debris in the cavity from falling directly above the air hole 432 and block the air passage.
  • the protective cover 410 is disposed on the positioning protrusion 438 . As shown in FIG. 5 , in order to make the structure of the balance valve 400 more compact, the protective cover 410 is set on the positioning protrusion 438 , in this way, the protective cover 410 can hold the balance film 420 1.
  • the balance valve body 400 and the gasket 440 are all covered on the outer plate 300, which has a compact structure and occupies a small volume.
  • the protective cover 410 and the ventilation groove 434 together form a ventilation channel, which can also prevent dust or debris in the cavity from falling directly above the ventilation hole 432. , blocking the ventilation channel.
  • Fig. 8 shows an assembled cross-sectional view of the balance valve 400 in the embodiment of the present application
  • a fixing hole 310 is provided on the outer plate 300
  • a gasket 440 is provided between the balance valve 400 and the outer plate 300
  • the fixing structure is arranged in the fixing hole 310, and a balance film 420 and a protective cover 410 are covered above the air hole 432, and the balance film 420 separates the air hole 432 from the external liquid to realize waterproofing Breathable effect.
  • FIG. 9 shows a schematic view of the ventilation channel
  • the fixing hole 310 communicates with the ventilation hole 432
  • a ventilation groove 434 is formed between the cover plate and the positioning protrusion 438
  • the ventilation groove 434 is connected to the ventilation hole 432
  • a ventilation channel is formed, which realizes the circulation of the cavity between the outer plate 300 and the thermal management component 200 and the outside air.
  • the balance valve 400 is fixed on the outer plate 300, has a compact structure, is flat, occupies a small space, and can be well arranged in the narrow space between the outer plate 300 and the heat management component 200, and has a good
  • the waterproof and breathable performance can well balance the pressure of the cavity and the external air, and prevent the deformation of the outer panel 300 and the generation of abnormal noise.
  • a battery is also provided, and the battery includes any one of the battery boxes mentioned in the above embodiments.
  • the battery box includes a box frame 100, a thermal management component 200 and an outer plate 300; the thermal management component 200 is arranged on one side of the box frame 100 for temperature regulation of the battery; the outer plate 300 Adjacent to the thermal management component 200, it is used to cover the thermal management component 200 on the box frame 100, and a balance valve 400 is provided on the outer plate 300, and the balance valve 400 is used for The cavity between the outer plate 300 and the heat management component 200 is communicated with the outside air.
  • an electric device the electric device includes the battery provided in the above embodiments, and the battery is used to provide electric energy for the electric device.
  • the electric device may be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.

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  • Electrochemistry (AREA)
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  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
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  • Gas Exhaust Devices For Batteries (AREA)

Abstract

一种电池箱体，包括：箱体框架（100）、热管理部件（200）和外板（300）；热管理部件（200）设置于箱体框架（100）一侧，用于对电池进行温度调节；外板（300）与热管理部件（200）相邻设置，用于将热管理部件（200）盖设在箱体框架（100）上，外板（300）上设置有平衡阀（400），平衡阀（400）用于将外板（300）和热管理部件（200）之间的腔体与外部气体连通。

Description

电池箱体、电池及用电装置 技术领域
本申请涉及电池技术领域，具体涉及一种电池箱体、电池及用电装置。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
电池在使用过程中会产生热量，从而导致电池温度的升高，如果电池温度过高，将导致电池发生自燃或者爆炸，因此需要对电池进行散热处理，本申请发明人在研究中发现，目前的散热方案散热效果差，而且会导致在散热过程中产生异响等问题。
发明内容
为了解决现有技术中存在的散热效果差以及在散热过程中会产生异响等问题，本申请实施例提出了一种电池箱体、电池及用电装置。
一方面，本申请实施例提出了一种电池箱体，包括：箱体框架、热管理部件和外板；所述热管理部件设置于所述箱体框架一侧，用于对电池进行温度调节；所述外板与所述热管理部件相邻设置，用于将所述热管理部件盖设在所述箱体框架上，所述外板上设置有平衡阀，所述平衡阀用于将所述外板和所述热管理部件之间的腔体与外部气体连通。
通过本申请提出的上述实施例，可以将腔体内部空气和外部空气相连通，在腔体内部气压较大时，腔体内部的空气通过所述平衡阀向外扩散，减轻了腔体内部的压力，实现了腔体内外压力的平衡，从而避免了外板由于腔体内部压力造成的变形，也避免了外板和热管理部件之间出现的松动而产生异响。
一些实施例中，平衡阀设置在所述外板两端。将平衡阀设置在外板的两端，能够快速平衡外板两端受到的空气压力，减小腔体内部两端气压差对外 板造成的影响。
一些实施例中，平衡阀设置在所述外板的中心位置。能够兼顾腔体内各个区域的空气压力，使各个区域的气体能够快速流出。
一些实施例中，外板上设置有固定孔；所述平衡阀包括平衡阀本体，所述平衡阀本体上设置有固定结构，所述固定结构与所述固定孔相配合将所述平衡阀固定在所述外板一侧。通过这种方式，方便平衡阀的安装和维修，使用方便。
一些实施例中，所述平衡阀本体上设置有透气孔，所述透气孔与所述固定孔形成透气通道。通过透气孔与所述固定孔形成透气通道，使腔体内的空气和外部连通，有利于腔体内外气压的快速平衡。
一些实施例中，所述固定结构为卡扣结构；所述卡扣结构沿所述透气孔四周朝外板方向延伸设置，与所述外板上的固定孔相卡接。
通过将所述固定结构设置为卡扣结构，可以方便的将所述平衡阀扣合在所述外板上，在固定时，只需要按压所述平衡阀，所述卡扣结构穿过所述固定孔，与所述固定孔进行卡合，方便的实现了平衡阀的安装。同时，通过卡扣结构，也可以方便的实现拆卸，方便了后续的维修。
一些实施例中，卡扣结构的应变值大于15％。在该应变值下，所述卡扣结构在后续使用过程中不容易发生断裂，保证了平衡阀的使用寿命。
一些实施例中，所述固定孔的宽度大于所述卡扣结构的宽度。通过这种方式，所述固定孔既可以用于安装平衡阀，又与透气孔一起构成透气通道，不需要在所述外板上另外设置透气孔，简化了结构，而且能达到很好的透气效果。
一些实施例中，固定结构为螺纹结构；所述螺纹结构沿所述透气孔四周朝外板方向延伸设置，所述外板上的固定孔内壁上相应设置有内螺纹结构，所述螺纹结构与所述内螺纹结构相配合，螺接于所述固定孔内。
通过上述方式，在固定平衡阀时，只需要扭动所述平衡阀，将所述平衡阀旋进所述固定孔即可实现平衡阀的安装固定。
一些实施例中，电池箱体还包括密封垫；所述密封垫设置于所述平衡阀与所述外板之间，用于将所述平衡阀和所述外板密封连接。当所述平衡阀本 体与所述外板连接时，将所述密封垫挤压在所述平衡阀本体和所述外板之间，所述密封垫发生弹性形变，对所述固定结构产生挤压，能够在所述平衡阀和外板之间起到更好的密封效果。
一些实施例中，所述密封垫的压缩量为40％-60％。本申请人通过实验得到最优的压缩量为40％-60％，如果压缩量过大，则会导致密封垫过压，影响密封垫的使用寿命，如果压缩量过小，则会导致密封不严情况的出现。
一些实施例中，在所述平衡阀本体上远离所述外板的一侧，在所述透气孔四周设置有透气槽；所述透气槽、所述透气孔和所述固定孔共同形成透气通道。
通过将透气槽设置在透气孔的四周，腔体内的气体不直接与所述透气孔相连通，需要通过透气槽再进入透气孔，因此通过透气槽将透气通道弯折，避免了尘埃或者碎屑堵塞透气孔。
一些实施例中，所述透气孔四周间隔设置有定位凸起，所述定位凸起之间形成透气槽。在定位凸起之间形成透气槽，所述透气槽和透气孔相连通，使所述平衡阀的结构更加紧凑，体积更加小巧。
一些实施例中，电池箱体还包括平衡膜；所述平衡膜盖设于所述透气孔上方。通过设置平衡膜可以防止腔体外部的液体通过固定孔和透气孔进入腔体内部，同时，又不影响腔体内部气体和外部气体的流通，起到了防水透气的效果。
一些实施例中，所述平衡膜为防水透气性复合材料。通过设置平衡膜可以防止腔体外部的液体通过固定孔和透气孔进入腔体内部，同时，又不影响腔体内部气体和外部气体的流通，起到了防水透气的效果。
一些实施例中，所述密封垫为环形，所述环形的内圈周长小于所述平衡膜的外圈周长，所述环形的外圈的周长大于所述平衡膜的外圈周长，使所述密封垫和平衡膜之间的密封区域进行重叠，起到更好的密封效果。
一些实施例中，电池箱体进一步包括保护盖；所述保护盖盖设于所述平衡阀远离所述外板的一端。
通过设置保护盖可以有效防止所述平衡阀在装配、运输以及存储过程中平衡膜被破坏，同时，通过设置保护盖，也能防止腔体内的尘埃或者碎屑直 接落在所述透气孔上方，堵塞透气通道。
一些实施例中，保护盖盖设于所述定位凸起上。通过这种方式，所述保护盖可以将平衡膜、平衡阀本体以及密封垫全部盖设在外板上，结构紧凑，占用体积小。
另一方面，本申请实施例还提出了一种电池，包括电池单体和上述实施例中提出的电池箱体，所述电池单体设置在所述电池箱体内。
另一方面，本申请实施例还提出了一种用电装置，包括上述实施例中提出的电池，所述电池用于提供电源。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
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爆炸示意图；
图3为本申请一些实施例提供的电池箱体爆炸示意图；
图4为本申请一些实施例提供的外板结构示意图；
图5为本申请一些实施例提供的平衡阀与外板固定爆炸图；
图6为本申请一些实施例提供的平衡阀局部放大图；
图7为本申请一些实施例提供另一种平衡阀结构图；
图8为本申请一些实施例提供的平衡阀剖视图；
图9为本申请一些实施例提供的平衡阀俯视图。
附图标记：
电池单体1000，车辆2000，电池2100，控制器2200，马达2300，电池箱体1100，上箱体110，下箱体120，箱体框架100，热管理部件200，外板300，固定孔310，平衡阀400，保护盖410，平衡膜420，平衡阀本体430，透气孔432，透气槽434，卡扣结构436，螺纹结构437，定位凸起438，密封垫 440，第一平衡阀500，第二平衡阀600，第三平衡阀700。
具体实施方式
下面将结合附图对本实用新型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实用新型的技术方案，因此只作为示例，而不能以此来限制本实用新型的保护范围。
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。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。
除非另有定义，本申请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；本申请中在申请的说明书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。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“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，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。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中的具体含义。
本申请中术语“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，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请中出现的“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)。
目前，随着技术的发展，动力电池的应用越来越广泛。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。
随着动力电池的使用越来越广泛，电池的安全性问题也越来越凸显出来，目前造成电池安全性的主要问题是电池在运行过程中，会导致温度升高，如果温度控制不当，会造成电池自燃，甚至会发生爆炸。因此，如何进行电池温度的控制，在电池温度升高时及时对电池进行散热变得越来越重要。目前主要采用的散热方案包括风冷散热、水冷散热以及通过其他方式进行散热，通常将热管理部件设置在电池箱体内部，作为电池箱体的一部分对电池进行散热，所述热管理部件包括水冷板和散热片等等。
在一种设计中，将热管理部件设置在电池的非顶部的部分，例如底部或者侧面。并且，设置这些部位的热管理部件，可以避开电池顶部的高压电气腔，避免热管理部件管路破损或者由于冷凝导致的液体流入高压电气腔。并且为确保电池的密封防护等级要求，在热管理部件与位于其外侧的电池外板之间都会做密封设计。
然而在使用过程中，由于热管理部件对空气的热胀冷缩的作用，会导致内部空气气压变化比较大，导致密封的外板发生变形，由此在使用过程中会发生异响，影响客户体验，也影响了散热效果。
并且，传统的平衡阀采用螺丝固定在密封的壳体上，常常需要在安装壳体上开设直通孔进行螺栓装配，螺栓装配的安装效率低且后加工处理工序复杂。另一方面，传统平衡阀产品高度尺寸较大，难以在热管理部件以及电池外板的密封的狭小空间内进行安装。若将平衡阀设置在外板的外侧，又会使得电池的整体外观一致性被破坏，并增加电池的体积，降低电池的能量密度。
基于上述考虑，本申请实施例通过在电池箱体内设置平衡阀，所述平衡阀与电池箱体的外板密封设置，能够保证电池箱体的密封性能。同时，所述平衡阀能够将电池箱体中密封的散热空间与外部空间进行连通，使内部的热空气能够通过平衡阀散热出去。一方面能够将电池箱体内部的热量带走，另一方面也实现了内外气压的平衡，避免了由于内外压力差导致的外板变形，也避免了电池在使用过程中由于内外气压差造成的异响。
本申请实施例公开的电池箱体和电池可以但不限用于车辆、船舶或飞行器等用电装置中。可以使用具备本申请公开的电池箱体和电池组成该用电装置的电源系统的一部分，这样，有利于提高电池箱体的散热性能，进而提高用电装置的安全性。
本申请实施例提供一种使用电池作为电源的用电装置，用电装置可以为但不限于手机、平板、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2000为例进行说明。
请参照图1，图1为本申请实施例提供的车辆2000的结构示意图。车辆2000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2000的内部设置有电池2100，电池2100可以设置在车辆2000的底部或头部或尾部。电池2100可以用于为车辆2000的供电，例如，电池2100可以作为车辆2000的操作电源。车辆2000还可以包括控制器2200和马达2300，控制器2200用来控制电池2100为马达2300供电，例如，用于车辆2000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2100不仅可以作为车辆2000的操作电源，还可以作为车辆2000的驱动电源，代替或部分地代替燃油或天然气为车辆2000提供驱动动力。
请参照图2，图2为本申请实施例提供的电池2100的爆炸图。电池2100包括电池箱体1100和电池单体1000，电池单体1000容纳于电池箱体1100 内。
本申请实施例所提到的电池2100是指包括一个或多个电池单体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2100可以包括电池模块或电池包等。电池单体1000可以是多个，多个电池单体1000之间可串联或并联或混联，混联是指多个电池单体1000中既有串联又有并联。多个电池单体1000之间可直接串联或并联或混联在一起，再将多个电池单体1000构成的整体容纳于电池箱体1100内；当然，也可以是多个电池单体1000先串联或并联或混联组成电池模块形式的电池2100，多个电池模块再串联或并联或混联形成一个整体，并容纳于电池箱体1100内。电池2100还可以包括其他结构，例如，该电池2100还可以包括汇流部件，用于实现多个电池单体1000之间的电连接。
电池箱体1100用于为电池单体1000提供容纳空间，电池箱体1100可以采用多种结构。在一些实施例中，电池箱体1100可以包括上箱体110和下箱体120，上箱体110与下箱体120相互盖合，上箱体110和下箱体120共同限定出用于容纳电池单体1000的容纳空间。下箱体120可以为一端开口的空心结构，上箱体110可以为板状结构，上箱体110盖合于下箱体120的开口侧，以使上箱体110与下箱体120共同限定出容纳空间；上箱体110和下箱体120也可以是均为一侧开口的空心结构，上箱体110的开口侧盖合于下箱体120的开口侧。当然，上箱体110和下箱体120形成的电池箱体1100可以是多种形状，比如，圆柱体、长方体等。
图3为本申请实施例提供的电池箱体1100的结构图，包括箱体框架100、热管理部件200和外板300。所述热管理部件200设置于所述箱体框架100一侧，用于对电池进行温度调节。所述外板300与所述热管理部件200相邻设置，用于将所述热管理部件200盖设在所述箱体框架100上，所述外板300上设置有平衡阀400，所述平衡阀400用于将所述外板300和所述热管理部件200之间的腔体与外部气体连通。
如图3所示，所述箱体框架100用于承载电池单体，通常采用不锈钢或者其他硬质材料制成，在将电池单体固定设置在箱体框架100上后，通过箱体框架100将电池设置在汽车车身上，用于向车辆提供电源。
所述箱体框架100一侧设置热管理部件200，用于对箱体框架100内设 置的电池单体进行散热。所述热管理部件200通常设置在箱体框架100的下方，与箱体框架100相贴合，以便能起到更好的散热效果。所述热管理部件200包括水冷板、散热板或其他散热部件。所述水冷板为通过液态水进行散热的方式，所述水冷板包括液态水的入口和出口，在水冷板上设置有走水管道，通过利用液态水的吸热性能，通过将冷水输入走水管道，在水的传输过程中，将热量带走。当然，也可以用其他液态物质代替水进行散热。所述散热板的方式，一般采用易于吸热的材料制成，通过与热源相接触，快速的带走热量。在本申请实施例中，对具体的热管理方式，不做限定，本申请提出的方案可以适用于各种热管理方案。
所述外板300设置在热管理部件200的另一侧，首先与热管理部件200密封固定，再一起与所述箱体框架100密封固定。为了保证电池的密封防护等级，满足其对防水性能的要求，所述外板300与热管理部件200，以及外板300与箱体框架100都需要通过密封方式设置在一起。所述外板300、热管理部件200与箱体框架100之间可以通过螺钉密封固定，也可以直接通过焊接的方式设置在一起。
在所述外板300上设置平衡阀400，所述平衡阀400用于将所述外板300和所述热管理部件200之间的腔体与外部气体连通。由于外板300和热管理部件200的密封设置，所述热管理部件200在散热过程中，会导致外板300和热管理部件200形成的密封腔内的气体由于热胀冷缩，造成外板300变形，同时，也会由于气体的压力影响，导致外板300和热管理部件200之间出现松动或者异响。所述平衡阀400设置在外板300上，一方面能够隔离外部的水进入外板300和热管理部件200形成的腔体内，另一方面，可以将腔体内部空气和外部空气相连通。在腔体内部气压较大时，腔体内部的空气通过所述平衡阀400向外扩散，减轻了腔体内部的压力，实现了腔体内外压力的平衡，从而避免了外板300由于腔体内部压力造成的变形，也避免了外板300和热管理部件200之间出现的松动而产生异响。
一些实施例中，如图4所示，为了使所述平衡阀400起到更好的平衡外板300和热管理部件200之间的腔体与外部空气压力的作用，可以在所述外板300上设置多个平衡阀400，将所述平衡阀400分别设置在所述外板300的两端。
如图4所示，第一平衡阀500和第三平衡阀700分别位于所述外板300的两端，将平衡阀400设置在外板300的两端有利于平衡外板300两端受到的气体压力，特别是电池箱体面积比较大时，由于不同的电池单体发热情况不一样，因此会造成电池箱体局部发热相差比较大，从而造成内部气体压力的不平衡，也会造成热管理部件200和外板300之间的腔体内空气压力的不平衡，将平衡阀400设置在外板300的两端，能够快速平衡外板300两端受到的空气压力，减小腔体内部两端气压差对外板300造成的影响。
一些实施例中，如图4所示，还可以将平衡阀400设置在外板300的中心位置。如图4所示，第二平衡阀600设置在所述外板300的中心位置。外板300的中心位置，是指外板300的非边缘位置。为了方便所述外板300与热管理部件200之间的腔体内部的空气流通，将平衡阀400设置在外板300的中心位置，能够兼顾腔体内各个区域的空气压力，使各个区域的气体能够快速流出。同时，也可以将平衡阀400同时设置在所述外板300的两端和中心位置，能够实现腔体内气体的快速流通，实现内外气体压强的快速平衡。
一些实施例中，如图5所示，所述外板300上设置有固定孔310；所述平衡阀400包括平衡阀本体430，所述平衡阀本体430上设置有固定结构，所述固定结构与所述固定孔310相配合将所述平衡阀400固定在所述外板300一侧。
将所述平衡阀400设置在外板300上的方式可以多种，比如，可以直接通过焊接的方式将平衡阀400焊接在外板300上。但通过焊接的方式将平衡阀400固定在外板300上，在平衡阀400出现故障时，存在维修不便的问题。本申请实施例提出了一种设置方式，如图5所示，本申请实施例在外板300上设置固定孔310，在平衡阀本体430上设置固定结构，通过所述固定结构与固定孔310相配合将所述平衡阀400固定在外板300的一侧。所述固定孔310可以为多种形状，比如可以直接为一个通孔，也可以为多个特殊形状的通孔，只要可以适配于所述固定结构，能够将所述平衡阀本体430进行固定即可。通过这种方式，方便平衡阀400的安装和维修，使用方便。
一些实施例中，所述平衡阀本体430上设置有透气孔432，所述透气孔432与所述固定孔310共同形成透气通道。为了增强平衡阀400的透气性能，如图5所示，在平衡阀本体430上设置透气孔432，所述透气孔432与所述 固定孔310形成透气通道，使腔体内的空气和外部连通，有利于腔体内外气压的快速平衡。所述平衡阀本体430上的透气孔432设置在所述平衡阀本体430的中心位置，可以与外板300上的固定孔310轴心相同，也可以错开设置。当所述透气孔432与所述固定孔310错开设置时，可以使所述透气通道在所述平衡阀本体430内进行一定程度的弯曲，避免腔体内的气体直接对平衡阀400造成冲击，损坏平衡阀400，可以提高平衡阀400的使用寿命。
一些实施例中，如图5所示，所述固定结构为卡扣结构436；所述卡扣结构436沿所述透气孔432四周朝外板300方向延伸设置，与所述外板300上的固定孔310相卡接。
为了实现所述平衡阀400的快速安装，将所述平衡阀本体430上的固定结构设置为卡扣结构436，所述卡扣结构436如图5所示，所述卡扣结构436沿所述透气孔432四周朝外板300方向延伸设置，所述卡扣结构436一端向外设置有凸起，所述凸起用于与所述固定孔310配合，卡接在所述固定孔310内。
如图6所示，为所述卡扣结构436的示意图，所述卡扣结构436为悬臂梁卡臂结构，所述卡扣结构436可以包括多个悬臂梁卡臂结构，多个悬臂梁卡臂结构分散设置。所述卡扣结构436的卡臂长度L大于或等于所述外板300的厚度，H为卡臂的厚度，变形量Y为凸起的高度，变形量Y的设置与所述平衡阀400卡接的力度有关，在本申请实施例中根据公式：Y＝0.67ξL 2/H，确定变形量Y的值。在选择卡扣结构436采用的材料时，首先根据经验确定卡扣结构436的变形量，经计算得到理论应变值ξ，然后再根据理论应变值选择满足此要求的材料。
通过将所述固定结构设置为卡扣结构436，可以方便的将所述平衡阀400扣合在所述外板300上，在固定时，只需要按压所述平衡阀400，所述卡扣结构436穿过所述固定孔310，与所述固定孔310进行卡合，方便的实现了平衡阀400的安装。同时，通过卡扣结构436，也可以方便的实现拆卸，方便了后续的维修。
一些实施例中，所述卡扣结构436的应变值大于15％。本申请实施例中，经过本申请人的实验得到，将所述卡扣结构436的应变值确定为大于15％能够达到更好的固定效果，在该应变值下，所述卡扣结构436在后续使用过程 中不容易发生断裂，保证了平衡阀400的使用寿命，所述卡扣结构436可以采用PCABS合金、PPE、PP或PA等材料制成。
一些实施例中，所述固定孔310的宽度大于所述卡扣结构436的宽度。为了方便所述外板300和所述热管理部件200之间的腔体内的气体流通，简化平衡阀400的结构，本申请实施例将所述固定孔310的宽度设置成大于所述卡扣结构436的宽度，这样在将所述平衡阀400通过卡扣结构436卡入所述固定孔310后，所述固定孔310内还有剩余的空间供气体通过，通过这种方式，所述固定孔310既可以用于安装平衡阀400，又与透气孔432一起构成透气通道，不需要在所述外板300上另外设置透气孔432，简化了结构，而且能达到很好的透气效果。
一些实施例中，将所述固定结构设置为螺纹结构437，所述螺纹结构437沿所述透气孔432四周朝外板300方向延伸设置，所述外板300上的固定孔310内壁上相应设置有内螺纹结构437，所述螺纹结构437与所述内螺纹结构437相配合，螺接于所述固定孔310内。
如图7所示，所述平衡阀400设置有螺纹结构437，所述螺纹结构437与卡扣结构436类似，沿所述透气孔432四周朝外板300方向延伸设置，在所述延伸结构外壁上，设置有外螺纹。与所述外螺纹相对应的，在所述固定孔310的内壁上，设置有内螺纹结构437，所述螺纹结构437相互配合，将所述平衡阀400螺接在所述固定孔310内。与所述卡合结构相类似，螺纹结构437通过螺接的方式对平衡阀400进行固定，在固定平衡阀400时，只需要扭动所述平衡阀400，将所述平衡阀400旋进所述固定孔310即可实现平衡阀400的安装固定。同样的，为了使所述固定孔310在安装完所述平衡阀400后，仍然能够保留透气通道，所述固定孔310内部设置为中空结构，所述中空结构与所述平衡阀本体430上的透气孔432相连通，形成透气通道。
一些实施例中，电池箱体还包括密封垫440，所述密封垫440设置于所述平衡阀400与所述外板300之间，用于将所述平衡阀400和所述外板300密封连接。
继续参考图5，从图5中可以看出，在所述平衡阀本体430和外板300之间，设置有密封垫440，所述密封垫440呈环形结构，套设于所述固定结构的外周，当所述平衡阀本体430与所述外板300连接时，将所述密封垫440 挤压在所述平衡阀本体430和所述外板300之间，所述密封垫440发生弹性形变，对所述固定结构产生挤压，能够在所述平衡阀400和外板300之间起到更好的密封效果。
所述密封垫440采用弹性材料制成，能够保证平衡阀本体430和外板300之间的密封等级达到IPX8级别。为了达到更好的密封效果，在连接之前，在所述密封垫440和平衡阀本体430之间以及所述密封垫440和外板300之间，可以首先涂抹胶水，使其能够达到更好的密封效果。
一些实施例中，所述密封垫440的压缩量为40％-60％。为了保证所述密封垫440的密封效果，所述固定结构和外板300安装在一起后，需要将所述密封垫440的压缩量限定在一定范围内，压缩量过小或者过大，都不利于密封的进行。在本申请实施例中，本申请人通过实验得到最优的压缩量为40％-60％，如果压缩量过大，则会导致密封垫440过压，影响密封垫440的使用寿命，如果压缩量过小，则会导致密封不严情况的出现。
一些实施例中，在所述平衡阀本体400上远离所述外板300的一侧，在所述透气孔432四周设置有透气槽434；所述透气槽434、所述透气孔432和所述固定孔310共同形成透气通道。
在所述外板300和热管理部件200形成的腔体内，有时会产生尘埃或者碎屑等杂物，为了防止腔体内部的尘埃或者碎屑堵塞所述透气通道，本申请实施例在所述透气孔432的四周设置透气槽434，通过透气槽434与所述透气孔432和固定孔310相连通，共同形成透气通道，由于透气槽434设置在透气孔432的四周，腔体内的气体不直接与所述透气孔432相连通，需要通过透气槽434再进入透气孔432，因此通过透气槽434将透气通道弯折，避免了尘埃或者碎屑堵塞透气孔432。
一些实施例中，所述透气孔432四周间隔设置有定位凸起438，所述定位凸起438之间形成透气槽434。
如图5所示，为了设置透气槽434，在所述透气孔432的四周间隔设置定位凸起438，通过间隔设置所述定位凸起438，在定位凸起438之间形成了透气槽434，所述透气槽434和透气孔432相连通，使所述平衡阀400的结构更加紧凑，体积更加小巧。
一些实施例中，还包括平衡膜420，所述平衡膜420盖设于所述透气孔 432上方。如图5所示，平衡膜420具有防水透气的作用，通常采用e-PTFE薄膜材料制成，防水等级达到IPX8标准等级，平衡膜420通过热压焊接方式贴合在平衡阀本体400上的透气孔432的上方，将透气孔432盖合。通过设置平衡膜420可以防止腔体外部的液体通过固定孔310和透气孔432进入腔体内部，同时，又不影响腔体内部气体和外部气体的流通，起到了防水透气的效果。所述平衡膜420设置在透气孔432上方，将透气孔432和透气槽434隔离开来，一方面使腔体内的空气通过透气槽434经过透气孔432流出，另一方面又阻止了进入固定孔310和透气孔432的液体通过平衡膜420进入腔体内，起到了很好的防水透气的效果。
一些实施例中，所述平衡膜420为防水透气性复合材料。平衡膜420具有防水透气的作用，通常采用e-PTFE薄膜材料制成，防水等级达到IPX8标准等级，平衡膜420通过热压焊接方式贴合在平衡阀本体400上的透气孔432的上方，将透气孔432盖合。通过设置平衡膜420可以防止腔体外部的液体通过固定孔310和透气孔432进入腔体内部，同时，又不影响腔体内部气体和外部气体的流通，起到了防水透气的效果。
一些实施例中，所述密封垫440为环形，所述环形的内圈周长小于所述平衡膜420的外圈周长，所述环形的外圈的周长大于所述平衡膜420的外圈周长。
如图5所示，所述密封垫440主要起到对所述平衡阀本体400和外板300之间的密封作用，所述平衡膜420主要起到对所述透气孔432进行密封的作用。为了达到更好的密封效果，本申请实施例将所述密封垫440内圈周长设置为小于所述平衡膜420的外圈周长，所述环形的外圈的周长设置为大于所述平衡膜420的外圈周长，使所述密封垫440和平衡膜420之间的密封区域进行重叠，起到更好的密封效果。
一些实施例中，所述电池箱体进一步包括保护盖410，所述保护盖410盖设于所述平衡阀400远离所述外板300的一端。为了防止所述平衡阀400在装配、运输以及存储过程中平衡膜420被破坏，本申请实施例在平衡阀400上远离外板300的一端设置保护盖410，对所述平衡膜420进行保护，同时，通过设置保护盖410，也能防止腔体内的尘埃或者碎屑直接落在所述透气孔432上方，堵塞透气通道。
一些实施例中，所述保护盖410盖设于所述定位凸起438上。如图5所示，为了使所述平衡阀400的结构更加紧凑，将所述保护盖410盖设在所述定位凸起438上，通过这种方式，所述保护盖410可以将平衡膜420、平衡阀本体400以及密封垫440全部盖设在外板300上，结构紧凑，占用体积小。同时，通过将保护盖410盖设在定位凸起438上，使所述保护盖410和透气槽434共同构成透气通道，也能防止腔体内的尘埃或者碎屑直接落在所述透气孔432上方，堵塞透气通道。
图8示出了本申请实施例中的平衡阀400的组装后的剖视图，在所述外板300上设置有固定孔310，所述平衡阀400和外板300之间设置密封垫440，通过固定结构设置在所述固定孔310内，在所述透气孔432的上方盖设有平衡膜420和保护盖410，所述平衡膜420将所述透气孔432与外部液体隔开，实现了防水透气的效果。图9示出了透气通道的示意图，所述固定孔310和所述透气孔432连通，所述盖板和所述定位凸起438之间形成透气槽434，所述透气槽434与透气孔432和固定孔310共同形成透气通道，实现了外板300和热管理部件200之间腔体与外部气体的流通。所述平衡阀400固定在所述外板300上，结构紧凑，呈扁平状，占用空间小，能够很好的设置在外板300和热管理部件200之间狭小的空间内，而且具有很好的防水透气性能，能够很好的平衡腔体和外部气体的压力，防止外板300变形以及产生异响。
根据本申请提出的一些实施例，还提出了一种电池，所述电池括了上述实施例中提到的任意一种电池箱体。所述电池箱体内包括箱体框架100、热管理部件200和外板300；所述热管理部件200设置于所述箱体框架100一侧，用于对电池进行温度调节；所述外板300与所述热管理部件200相邻设置，用于将所述热管理部件200盖设在所述箱体框架100上，所述外板300上设置有平衡阀400，所述平衡阀400用于将所述外板300和所述热管理部件200之间的腔体与外部气体连通。通过本申请实施例提出的电池箱体结构，在提高了电池箱体的散热性能的同时，又减小了电池箱体在使用过程中发生形变的可能，减小了异响，提升了使用体验。
根据本申请提出的一些实施例，还提供一种用电装置，所述用电装置包括上述实施例中提出的电池，所述电池用于为所述用电装置提供电能。所述用电装置可以为但不限于手机、平板、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。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (20)

  1. 一种电池箱体，其特征在于，包括：箱体框架、热管理部件和外板；
    所述热管理部件设置于所述箱体框架一侧，用于对电池进行温度调节；
    所述外板与所述热管理部件相邻设置，用于将所述热管理部件盖设在所述箱体框架上，所述外板上设置有平衡阀，所述平衡阀用于将所述外板和所述热管理部件之间的腔体与外部气体连通。
  2. 如权利要求1所述的电池箱体，其特征在于，所述平衡阀设置在所述外板两端。
  3. 如权利要求1或2所述的电池箱体，其特征在于，所述平衡阀设置在所述外板的中心位置。
  4. 如权利要求1-3任一项所述的电池箱体，其特征在于，所述外板上设置有固定孔；
    所述平衡阀包括平衡阀本体，所述平衡阀本体上设置有固定结构，所述固定结构与所述固定孔相配合将所述平衡阀固定在所述外板一侧。
  5. 如权利要求4所述的电池箱体，其特征在于，所述平衡阀本体上设置有透气孔，所述透气孔与所述固定孔形成透气通道。
  6. 如权利要求4或5所述的电池箱体，其特征在于，所述固定结构为卡扣结构；
    所述卡扣结构沿所述透气孔四周朝外板方向延伸设置，与所述外板上的固定孔相卡接。
  7. 如权利要求6所述的电池箱体，其特征在于，所述卡扣结构的应变值大于15％。
  8. 如权利要求6或7所述的电池箱体，其特征在于，所述固定孔的宽度大于所述卡扣结构的宽度。
  9. 如权利要求4或5所述的电池箱体，其特征在于，所述固定结构为螺纹结构；
    所述螺纹结构沿所述透气孔四周朝外板方向延伸设置，所述外板上的固定孔内壁上相应设置有内螺纹结构，所述螺纹结构与所述内螺纹结构相配合， 螺接于所述固定孔内。
  10. 如权利要求1-9任一项所述的电池箱体，其特征在于，还包括密封垫；
    所述密封垫设置于所述平衡阀与所述外板之间，用于将所述平衡阀和所述外板密封连接。
  11. 如权利要求10所述的电池箱体，其特征在于，所述密封垫的压缩量为40％-60％。
  12. 如权利要求4-11任一项所述的电池箱体，其特征在于，在所述平衡阀本体上远离所述外板的一侧，在所述透气孔四周设置有透气槽；
    所述透气槽、所述透气孔和所述固定孔共同形成透气通道。
  13. 如权利要求12所述的电池箱体，其特征在于，所述透气孔四周间隔设置有定位凸起，所述定位凸起之间形成透气槽。
  14. 如权利要求4-13任一项所述的电池箱体，其特征在于，还包括平衡膜；
    所述平衡膜盖设于所述透气孔上方。
  15. 如权利要求14所述的电池箱体，其特征在于，所述平衡膜为防水透气性复合材料。
  16. 如权利要求14或15所述的电池箱体，其特征在于，所述密封垫为环形，所述环形的内圈周长小于所述平衡膜的外圈周长，所述环形的外圈的周长大于所述平衡膜的外圈周长。
  17. 如权利要求1-16任一项所述的电池箱体，其特征在于，进一步包括保护盖；
    所述保护盖盖设于所述平衡阀远离所述外板的一端。
  18. 如权利要求13所述的电池箱体，其特征在于，还包括保护盖；
    所述保护盖盖设于所述定位凸起上。
  19. 一种电池，其特征在于，包括电池单体和如权利要求1-18任一项所述的电池箱体，所述电池单体设置在所述电池箱体内。
  20. 一种用电装置，其特征在于，包括如权利要求19所述的电池，所述电池用于提供电源。
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US20230123699A1 (en) 2023-04-20
KR20230054607A (ko) 2023-04-25

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