WO2024093026A1 - 隔离板、隔离板组件、电池模组、电池包、用电装置 - Google Patents

隔离板、隔离板组件、电池模组、电池包、用电装置 Download PDF

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Publication number
WO2024093026A1
WO2024093026A1 PCT/CN2023/071514 CN2023071514W WO2024093026A1 WO 2024093026 A1 WO2024093026 A1 WO 2024093026A1 CN 2023071514 W CN2023071514 W CN 2023071514W WO 2024093026 A1 WO2024093026 A1 WO 2024093026A1
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WO
WIPO (PCT)
Prior art keywords
isolation plate
exhaust
battery module
battery
flow guide
Prior art date
Application number
PCT/CN2023/071514
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English (en)
French (fr)
Inventor
陈宜锋
汪用广
田佳禹
廖喜平
陈贵泽
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
Publication of WO2024093026A1 publication Critical patent/WO2024093026A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—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
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, and in particular to an isolation plate, an isolation plate assembly, a battery module, a battery pack, and an electrical device.
  • the present application provides an isolation plate, an isolation plate assembly, a battery module, a battery pack, and an electrical device, which can change the exhaust path through the exhaust structure of the isolation plate to prevent the problem of battery module or battery pack failure that may be easily caused by exhaust.
  • the present application provides an isolation plate for use in a battery module, the isolation plate comprising:
  • exhaust holes There are multiple exhaust holes, and the exhaust directions of some of the exhaust holes are set along the first direction, and the exhaust directions of another part of the exhaust holes are set along the second direction, wherein the first direction and the second direction are respectively set at an angle to the vertical direction, and the first direction and the second direction are set at an angle.
  • the exhaust holes are arranged in at least the first direction and the second direction, which can avoid the risk of bursting of the top of the battery module or battery pack due to exhaust difficulties, thereby preventing the battery module or battery pack from failing.
  • the first direction is the length direction of the battery module
  • the second direction is the width direction of the battery module
  • the exhaust direction can be along the length direction and width direction of the battery module, and the gas can be quickly discharged into the internal space of the battery module and discharged to the outside of the battery module in time.
  • the isolation panel comprises:
  • the exhaust hood protrudes on one side of the isolation plate body in the thickness direction and is connected to the isolation plate body.
  • the internal space of the exhaust hood forms an exhaust channel.
  • the exhaust channel penetrates the isolation plate body. Multiple exhaust holes are located on the exhaust hood.
  • the exhaust hood is arranged on the isolation plate body, which increases the air storage space to avoid “air trapping" on the one hand, and improves the overall rigidity of the isolation plate on the other hand.
  • the exhaust hood is fixedly connected to the isolation plate body or is integrally formed therewith.
  • the exhaust hood and the isolation plate body can be reliably connected together.
  • the exhaust hood is in the shape of an elongated strip.
  • the exhaust hood is in the shape of a long strip, which can further increase the rigidity of the isolation plate and improve the bending resistance of the isolation plate.
  • the number of the exhaust hood is one, and the length direction of the exhaust hood is the same as the first direction.
  • the exhaust hood is provided with exhaust holes to increase the exhaust volume, achieve rapid exhaust when the battery pack or battery module fails due to thermal failure, reduce the risk of battery explosion, and also increase the overall stiffness of the isolation plate.
  • each exhaust hood is provided with exhaust holes, which can increase the exhaust volume, realize rapid exhaust when the battery pack or battery module fails due to thermal failure, reduce the risk of battery explosion, and also increase the overall stiffness of the isolation plate.
  • At least one exhaust hole is disposed on the top of the exhaust hood, and the exhaust hole is constructed so that the spraying direction of the exhaust hole forms an angle with the vertical direction.
  • the present application provides an isolation plate assembly, comprising the isolation plate of the first aspect.
  • the isolation plate assembly of the present application includes all the technical features of the first aspect, and the effects are the same as those described above, which will not be repeated here.
  • the present application provides a battery module having the isolation plate assembly of the second aspect, the battery module comprising:
  • At least one battery cell is provided with a first air leakage port on the top of the battery cell; the isolation plate is located on the top of the at least one battery cell, and the exhaust hole is connected with the first air leakage port.
  • the battery module of the present application includes all the technical features of the first aspect, and the effects are the same as those described above, which will not be repeated here.
  • a pressure relief mechanism is further provided at the bottom of the battery cell.
  • the setting of the pressure relief mechanism can allow the exhaust to be simultaneously from the top and bottom when the battery cell assembly of the battery module is in thermal runaway, so that the gas inside the battery cell assembly can be discharged in time, further reducing the risk of explosion of the battery module or battery pack.
  • a battery pack comprising:
  • the battery module of the third aspect is arranged in a box.
  • the battery pack of the present application includes all the technical features of the first aspect, and the effects are the same as those described above, which will not be repeated here.
  • a gap is provided between the side wall of the battery module and the side wall of the box body
  • the battery pack also includes a flow guide
  • a flow guide is provided between the bottom of the battery module and the bottom of the box body
  • the flow guide is provided with a first flow guide port and a second flow guide port communicating with the first flow guide port
  • the second flow guide port is connected to the gap
  • the first flow guide port is arranged opposite to the pressure relief mechanism of the battery cell.
  • the gas caused by thermal runaway of the battery can be discharged laterally from the bottom to the gap between the side wall of the box and the side wall of the battery module, thereby accelerating the exhaust speed during thermal runaway of the battery, avoiding local trapped gas, and further reducing the risk of explosion of the battery module/battery pack.
  • the first guide port penetrates the guide member along the thickness direction of the isolation plate, and the second guide port is arranged along the first direction.
  • the second guide port can better guide the gas exhausted from the bottom of the battery module into the gap between the side wall of the box body and the side wall of the battery module, avoiding the problem of "trapped gas” caused by difficulty in exhausting the gas at the bottom.
  • the present application provides an electrical device, comprising the battery module of the third aspect; the battery module is used to provide electrical energy; or comprising the battery pack of the fourth aspect, the battery pack is used to provide electrical energy.
  • the electrical device includes the technical features of the above-mentioned battery module or the above-mentioned battery pack, and the effects are the same as those described above, which will not be repeated here.
  • FIG1 is a schematic diagram of an electric device that is a vehicle in some embodiments of the present application.
  • FIG2 is a schematic diagram of an exploded structure of a battery pack according to some embodiments of the present application.
  • FIG3 is a schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application.
  • FIG4 is an axonometric view of an isolation plate according to some embodiments of the present application.
  • FIG5 is a partial view of FIG4
  • FIG6 is a schematic diagram of an exploded structure of a battery module according to some embodiments of the present application.
  • FIG7 is an axonometric view of a flow guide member according to some embodiments of the present application.
  • FIG8 is a partial enlarged view of point I in FIG7.
  • Battery pack shell 10 box body 11, upper cover 12;
  • Battery cell 20 top cover assembly 21, electrode terminal 21a, housing 22, battery cell assembly 23, positive electrode ear 23a, negative electrode ear 23b, first vent 23c;
  • Isolation plate 30 isolation plate body 31, exhaust cover 32, exhaust hole 321, first direction B, second direction A, thickness direction C of isolation plate body;
  • the term "and/or" is only a description of the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.
  • multiple refers to more than two (including two).
  • multiple groups refers to more than two groups (including two groups), and “multiple pieces” refers to more than two pieces (including two pieces).
  • the gap between the exhaust hole and the top cover of the battery module or battery pack is small, which can easily cause air entrapment.
  • the gas impacts the top cover, which may cause the battery to explode and lead to battery failure.
  • the applicant has found that the direction of the exhaust hole can be changed so that the exhaust is discharged from the side, which can avoid the exhaust hole from impacting the top cover of the battery module or battery pack, and set exhaust holes in multiple directions on the isolation plate to increase the exhaust speed, so that the gas can be discharged in time, further avoiding the phenomenon of "trapped gas", thereby reducing the risk of battery explosion.
  • the embodiment of the present application provides an electric device, including a battery cell or a battery pack, which provides electric energy for the electric device.
  • the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy
  • the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.
  • FIG. 1 is a schematic diagram of the structure of a vehicle 1000 provided in 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.
  • a battery pack 100 is provided inside the vehicle 1000, and the battery pack 100 may be provided at the bottom, head or tail of the vehicle 1000.
  • the battery pack 100 may be used to power the vehicle 1000, for example, the battery pack 100 may be used as an operating power source for the vehicle 1000.
  • the vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery pack 100 to power the motor 300, for example, for the starting, navigation and driving power requirements of the vehicle 1000.
  • the battery pack 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • FIG. 2 is a schematic diagram of the exploded structure of a battery pack 100 provided in some embodiments of the present application.
  • the battery pack 100 includes a battery pack housing 10 and at least one battery cell 20, and the battery cell 20 is contained in the battery pack housing 10.
  • the battery pack housing 10 is used to provide a storage space for the battery cell 20, and the battery pack housing 10 can adopt a variety of structures.
  • the battery pack housing 10 may include a box body 11 and an upper cover 12, and the box body 11 and the upper cover 12 cover each other, and the box body 11 and the upper cover 12 jointly define a storage space for accommodating the battery cell 20.
  • the upper cover 12 may be a hollow structure with an inlet at one end, and the box body 11 may be a plate-shaped structure, and the box body 11 covers the inlet side of the upper cover 12, so that the box body 11 and the upper cover 12 jointly define a storage space; the box body 11 and the upper cover 12 may also be hollow structures with an inlet on one side, and the inlet side of the box body 11 covers the inlet side of the upper cover 12.
  • the box body 11 formed by the box body 11 and the upper cover 12 can be in various shapes, such as T-shape, rectangular parallelepiped, etc.
  • the battery pack 100 there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection.
  • a mixed connection means that the multiple battery cells 20 are both connected in series and in parallel.
  • the multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 11; of course, the battery pack 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 11.
  • the battery pack 100 may also include other structures, for example, the battery pack 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.
  • Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.
  • the battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.
  • FIG. 3 is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of the present application.
  • the battery cell 20 refers to the smallest unit constituting a battery pack.
  • the battery cell 20 includes a top cover assembly 21, a housing 22, a battery cell assembly 23 and other functional components.
  • the top cover assembly 21 refers to a component that covers the inlet of the outer shell 22 to isolate the internal environment of the battery cell 20 from the external environment.
  • the shape of the top cover assembly 21 can be adapted to the shape of the outer shell 22 to match the outer shell 22.
  • the top cover assembly 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the top cover assembly 21 is not easy to deform when it is squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved.
  • Functional components such as electrode terminals 21a can be provided on the top cover assembly 21. The electrode terminal 21a can be used to electrically connect with the battery cell assembly 23 to output or input the electrical energy of the battery cell 20.
  • the top cover assembly 21 can 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 material of the top cover assembly 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.
  • an insulating member may be provided inside the top cover assembly 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the top cover assembly 21 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber, or the like.
  • the shell 22 is a component used to cooperate with the top cover assembly 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the battery cell assembly 23, electrolyte and other components.
  • the shell 22 and the top cover assembly 21 can be independent components, and an inlet can be set on the shell 22, and the top cover assembly 21 covers the inlet to form the internal environment of the battery cell 20.
  • the top cover assembly 21 and the shell 22 can also be integrated.
  • the top cover assembly 21 and the shell 22 can form a common connection surface before other components enter the shell, and when the interior of the shell 22 needs to be encapsulated, the top cover assembly 21 covers the shell 22.
  • the shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the battery cell assembly 23.
  • the material of the shell 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.
  • the battery cell assembly 23 is a component in the battery cell 20 where electrochemical reactions occur.
  • One or more battery cell assemblies 23 may be contained in the housing 22.
  • the battery cell assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets.
  • the parts of the positive and negative electrode sheets with active materials constitute the main body of the battery cell assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear.
  • the positive pole ear 23a and the negative pole ear 23b may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.
  • isolation plate 30 of some embodiments of the present application is described by taking an isolation plate 30 of some embodiments of the present application as an example.
  • An isolation plate 30 of the present application includes a plurality of exhaust holes 321, wherein the exhaust directions of some of the plurality of exhaust holes 321 are arranged along a first direction B, and the exhaust directions of another portion of the plurality of exhaust holes 321 are arranged along a second direction A, wherein the first direction B and the second direction A are respectively arranged at an angle to the vertical direction, and the first direction B and the second direction A are arranged at an angle therebetween.
  • the vertical direction in the present application is the thickness direction of the isolation plate 30 .
  • the first direction B and the second direction A may be perpendicular or non-perpendicular, which is not specifically limited here.
  • the first direction B and the second direction A are respectively arranged at an angle with the vertical direction, which means that the first direction B and the second direction A do not coincide with the vertical direction.
  • the first direction B and the second direction A are arranged at an angle, which means that the first direction B and the second direction A do not overlap.
  • the exhaust holes 321 are arranged at least in the first direction B and the second direction A, which can avoid the risk of air entrapment caused by exhausting from the top and causing the top of the battery module or battery pack to burst, thereby preventing the battery module or battery pack from failing.
  • the first direction B is the length direction of the battery module
  • the second direction A is the width direction of the battery module
  • the exhaust direction can be along the length and width directions of the battery module, and the gas can be quickly discharged into the internal space of the battery module and discharged in time.
  • the isolation plate includes an isolation plate body 31 and an exhaust hood 32.
  • the exhaust hood 32 is protrudingly arranged on one side of the thickness direction C of the isolation plate body and connected to the isolation plate body 31.
  • the internal space of the exhaust hood 32 forms an exhaust channel.
  • the exhaust channel penetrates the isolation plate body 31 along the thickness direction C of the isolation plate body.
  • a plurality of exhaust holes 321 are located on the exhaust hood 32.
  • the shape of the exhaust hood 32 may be, but is not limited to, square, circular, trapezoidal, etc., and may be specifically set according to actual needs.
  • the exhaust hood 32 is connected to the isolation plate body 31, which means that the exhaust hood 32 and the isolation plate body 31 are relatively fixed together and cannot move.
  • the exhaust hole 321 is arranged on the side of the exhaust hood 32, while the exhaust hole 321 is not arranged on the top surface of the exhaust hood 32.
  • the exhaust hole 321 is arranged at least in the first direction B and the second direction A.
  • the first direction B and the second direction A may be perpendicular to the thickness direction C of the isolation plate body, or may not be perpendicular.
  • the exhaust holes 321 are disposed on the top surface of the exhaust cover 32.
  • the first direction B and the second direction A are perpendicular to the thickness direction C of the isolation plate body.
  • the exhaust holes 321 are arranged on the top surface and the side surface of the exhaust hood 32, and the exhaust holes 321 are arranged in at least the first direction B and the second direction A.
  • the direction of the exhaust holes 321 on the top surface is perpendicular to the thickness direction C of the isolation plate body, and the direction of the exhaust holes 321 on the side surface may be perpendicular to the thickness direction C of the isolation plate body, or may not be perpendicular.
  • the exhaust hood 32 is disposed on the isolation plate body 31 , which, on the one hand, increases the air storage space to avoid “air trapping”, and on the other hand, improves the overall rigidity of the isolation plate 30 .
  • the exhaust hood 32 and the isolation plate body 31 are detachably connected or integrally formed.
  • the detachable connection between the exhaust hood 32 and the isolation plate body 31 may be, but is not limited to, screw connection, riveting, hot-melt welding, clamping, etc.
  • the exhaust hood 32 and the isolation plate body 31 may be integrally formed by, but not limited to, hot pressing molding, integral injection molding, etc.
  • the exhaust hood 32 and the isolation plate body 31 can be detachably connected or integrally formed, so that the exhaust hood 32 and the isolation plate body 31 can be reliably connected together.
  • the exhaust hood 32 is in the shape of a long strip.
  • the isolation plate body 31 is in the shape of an elongated strip, and the length direction of the isolation plate body 31 is the same as the length direction of the exhaust hood 32.
  • the isolation plate body 31 may also be in other shapes, which are not specifically limited here.
  • the exhaust hood 32 is in the shape of an elongated strip, which can further increase the rigidity of the isolation plate 30 and improve the bending resistance of the isolation plate 30 .
  • the number of the exhaust hood 32 is one, and the length direction of the exhaust hood 32 is the same as the first direction B.
  • the number of exhaust hoods 32 can be one, and exhaust holes 321 are provided on the exhaust hood 32 to increase the exhaust volume, achieve rapid exhaust when the battery pack or battery module fails due to thermal failure, reduce the risk of battery explosion, and also increase the overall stiffness of the isolation plate 30.
  • each exhaust hood 32 is provided with an exhaust hole, which can increase the exhaust volume, achieve rapid exhaust when the battery pack or battery module fails due to thermal failure, reduce the risk of battery explosion, and also increase the overall stiffness of the isolation plate 30 .
  • At least one exhaust hole 321 is disposed on the top of the exhaust hood 32 , and the exhaust hole 321 is configured such that the spraying direction of the exhaust hole 321 forms an angle with the vertical direction.
  • the top of the exhaust hood 32 refers to a side surface of the exhaust hood 32 that is away from the isolation plate body 31 along the thickness direction C of the isolation plate body.
  • the insulation panel assembly of the present application includes the insulation panel 30 described above.
  • the isolation plate assembly further comprises a bar sheet and a circuit board, and the isolation plate is provided with a plurality of bar sheet mounting positions and a circuit board arranged at intervals, and a bar sheet is mounted on each bar sheet mounting position.
  • the bar sheet is used to electrically connect two adjacent battery cells.
  • the isolation plate assembly of the present application includes all the technical features of the above-mentioned isolation plate, and the effects it provides are the same as those described above, which will not be repeated here.
  • the battery module of the present application includes at least one battery cell and the above-mentioned isolation plate 30.
  • the top of the battery cell is provided with a first vent 23c
  • the isolation plate 30 is located on the top of at least one battery cell
  • the exhaust hole 321 is connected to the first vent 23c.
  • a first pressure relief mechanism is disposed in the first air relief port 23c, and the first pressure relief mechanism may be an explosion-proof valve or a temperature-sensitive top cover.
  • the gas in the battery cell 20 is discharged through the first vent 23c and the exhaust port in sequence.
  • the setting of the exhaust port can prevent the gas from blowing directly to the top cover of the battery module (the current exhaust port is directly toward the top cover, and the gap between the top cover and the exhaust port is small, which makes it difficult for the gas to be discharged in time, resulting in a "trapped gas” phenomenon).
  • a pressure relief mechanism is further provided at the bottom of the battery cell 20 .
  • the pressure relief mechanism may be, but is not limited to, an explosion-proof valve.
  • the battery cell assembly of the battery module can be exhausted from the top and bottom at the same time when thermal runaway occurs, so that the gas inside the battery cell assembly can be discharged in time, further reducing the risk of explosion of the battery module or battery pack.
  • the battery pack of the present application includes a box body (not shown in the figure) and the above-mentioned battery module, and the battery module is arranged in the box body.
  • the battery pack of the present application includes all the technical features of the above-mentioned battery module, and the effects are the same as those described above, which will not be repeated here.
  • a gap is provided between the side wall of the battery module and the side wall of the box body, and the battery pack also includes a flow guide 40, and a flow guide 40 is provided between the bottom of the battery module and the bottom of the box body.
  • the flow guide 40 is provided with a first flow guide port 41 and a second flow guide port 42 communicating with the first flow guide port 41, and the second flow guide port 42 is connected to the gap, and the first flow guide port 41 is arranged opposite to the pressure relief mechanism of the battery cell 20.
  • the gas caused by thermal runaway of the battery can be discharged laterally from the bottom to the gap between the side wall of the box and the side wall of the battery module, thereby accelerating the exhaust speed during thermal runaway of the battery, avoiding local trapped gas, and further reducing the risk of module/battery pack explosion.
  • the first guide port 41 penetrates the guide member 40 along the thickness direction of the isolation plate 30 , and the second guide port 42 is disposed along the first direction B.
  • the thickness direction of the separator 30 is the same as the thickness direction C of the separator body.
  • the guide member 40 may be a long strip-shaped structure.
  • the length direction of the guide member 40 is the same as the arrangement direction of the battery cell assemblies 23 .
  • the second air guide port 42 may be a notch structure, and the notch faces one side of the second direction A.
  • the guide member 40 can better guide the gas exhausted from the bottom of the battery module into the gap between the side wall of the box body and the side wall of the battery module, avoiding the problem of "trapped gas” caused by difficulty in exhausting the gas at the bottom.
  • isolation plate 30 of some embodiments of the present application is described by taking an isolation plate 30 of some embodiments of the present application as an example.
  • An isolation plate 30 of the present application includes a plurality of exhaust holes 321, wherein the exhaust directions of some of the plurality of exhaust holes 321 are arranged along a first direction B, and the exhaust directions of another portion of the plurality of exhaust holes 321 are arranged along a second direction A, wherein the first direction B and the second direction A are respectively arranged at an angle to the vertical direction, and the first direction B and the second direction A are arranged at an angle therebetween.
  • the first direction B is the length direction of the battery module
  • the second direction A is the width direction of the battery module.
  • the isolation plate includes an isolation plate body 31 and an exhaust hood 32.
  • the exhaust hood 32 is protrudingly arranged on one side of the isolation plate body in the thickness direction and connected to the isolation plate body 31.
  • the internal space of the exhaust hood 32 forms an exhaust channel.
  • the exhaust channel penetrates the isolation plate body 31 along the thickness direction of the isolation plate body.
  • a plurality of exhaust holes 321 are located on the exhaust hood 32.
  • the exhaust hood 32 and the isolation plate body 31 are detachably connected or integrally formed.
  • the number of the exhaust hood 32 is one, and the length direction of the exhaust hood 32 is the same as the first direction B.
  • the multiple exhaust hoods 32 are arranged at intervals along the first direction B.
  • At least one exhaust hole 321 is provided on the top of the exhaust hood 32, and the exhaust hole 321 is constructed so that the spraying direction of the exhaust hole 321 forms an angle with the vertical direction.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

本申请公开了一种隔离板、隔离板组件、电池模组、电池包、用电装置，属于电池技术领域。本申请的一种隔离板用于电池模组中，隔离板包括：多个排气孔，多个排气孔中的部分排气孔的排气方向沿第一方向设置，多个排气孔中的另一部分排气孔的排气方向沿第二方向设置，其中，第一方向和第二方向分别与竖直方向呈夹角设置，且第一方向和第二方向呈夹角设置。本申请的排气孔至少朝向第一方向和第二方向设置，而沿隔离板本体的厚度方向，可以避免从顶部排气引起排气困难而造成电池模组或电池包顶部爆裂的风险，从而可防止电池模组或电池包失效的问题发生。

Description

隔离板、隔离板组件、电池模组、电池包、用电装置
相关申请的交叉引用
本申请要求享有于2022年10月31日提交的名称为“隔离板、隔离板组件、电池模组、电池包、用电装置”的中国专利申请202222868503.3的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，具体涉及一种隔离板、隔离板组件、电池模组、电池包、用电装置。
背景技术
电池模组或电池包中的电芯热失控时，电芯上的防爆阀打开需要及时将产生的气体排出，目前电芯热失控排气时容易出现排气不及时而造成电池模组或电池包的失效。
发明内容
鉴于上述问题，本申请提供一种隔离板、隔离板组件、电池模组、电池包、用电装置，可以通过隔离板的排气结构改变排气路径，防止排气时容易引起电池模组或电池包失效的问题发生。
第一方面，本申请提供了一种隔离板，用于电池模组中，隔离板包括：
多个排气孔，多个排气孔中的部分排气孔的排气方向沿第一方向设置，多个排气孔中的另一部分排气孔的排气方向沿第二方向设置，其中，第一方向和第二方向分别与竖直方向呈夹角设置，且第一方向和第二方向呈夹角设置。
本申请实施例的技术方案中，排气孔至少朝向第一方向和第二方向设置，可以避免排气困难而造成电池模组或电池包顶部爆裂的风险，从而可防止电池模组或电池包失效的问题发生。
在一些实施例中，第一方向为电池模组的长度方向，第二方向为电池模组的宽度方向。
由此，排气方向可沿电池模组的长度方向和宽度方向，可以将气体快速排入电池模组的内部空间并及时排出至电池模组的外部。
在一些实施例中，隔离板包括：
隔离板本体；
排气罩，排气罩凸出设置在隔离板本体的厚度方向的一侧，并与隔离板本体连接，排气罩的内部空间形成排气通道，沿隔离板本体的厚度方向，排气通道贯通隔离板本体，多个排气孔位于排气罩上。
排气罩设置在隔离板本体上，一方面增加了储气空间，可避免“困气”，另一方面提高了隔离板的整体刚度。
在一些实施例中，排气罩与隔离板本体固定连接或一体成型设置。
可使排气罩与隔离板本体可靠连接在一起。
在一些实施例中，排气罩的形状为长条形。
排气罩的形状为长条形，可进一步增加隔离板的刚度，提高隔离板的抗弯性能。
在一些实施例中，排气罩的数量为一个，排气罩的长度方向与第一方向相同。
排气罩上设有排气孔，可增加排气量，实现电池包或电池模组热失效时的快速排气，降低电池爆裂的风险，同时也增加隔离板的整体刚度。
在一些实施例中，排气罩的数量为多个，多个排气罩沿第一方向间隔设置。
排气罩的数量为多个，每个排气罩上设有排气孔，可增加排气量，实现电池包或电池模组热失效时的快速排气，降低电池爆裂的风险，同时也增加隔离板的整体刚度。
在一些实施例中，排气罩的顶部设有至少一个排气孔，排气孔被构造为排气孔的喷射方向与竖直方向成夹角设置。
由此，可以避免排气孔排出的气体直接喷向电池模组或电池包的顶盖。
第二方面，本申请提供了一种隔离板组件，包括第一方面的隔离板。
本申请的隔离板组件包括第一方面的全部技术特征，所起效果与上述相同，在此不再赘述。
第三方面，本申请提供了一种电池模组，具有第二方面的隔离板组件，电池模组包括：
至少一个电池单体，电池单体的顶部设有第一泄气口；隔离板位于至少一个电池单体的顶部，排气孔与第一泄气口连通。
本申请的电池模组包括第一方面的全部技术特征，所起效果与上述相同，在此再赘述。
在一些实施例中，电池单体的底部还设有泄压机构。
泄压机构的设置，可以使电池模组的电芯组件热失控时可以同时从顶部和底部排气，以使电芯组件内部的气体及时排出，进一步降低电池模组或电池包爆裂的风险。
第四方面，本申请提供了一种电池包，包括：
箱体；
第三方面的电池模组，电池模组设于箱体内。
本申请的电池包包括第一方面的全部技术特征，所起效果与上述相同，在此再赘述。
在一些实施例中，电池模组的侧壁与箱体的侧壁设有间隙，电池包还包括导流件，电池模组的底部与箱体的底部之间设有导流件，导流件设有第一导流口以及与第一导流口相通的第二导流口，第二导流口与间隙连通，第一导流口与电池单体的泄压机构相对设置。
可以将电池热失控的气体从底部横向导出至箱体的侧壁与电池模组的侧壁之间的间隙中，加快电池热失控时的排气速度，避免局部出现困气，进一步降低电池模组/电池包爆裂风险。
在一些实施例中，第一导流口沿隔离板的厚度方向贯通导流件，第二导流口沿第一方向设置。
第二导流口可以更好地将电池模组底部排出的气体导入至箱体的侧壁与电池模组的侧壁之间的间隙中，避免底部出现排气困难而出现“困气”的问题。
第五方面，本申请提供了一种用电装置，包括第三方面的电池模组；电池模组用于提供电能；或者包括第四方面的电池包，电池包用于提供电能。
用电装置包括上述电池模组或上述电池包的技术特征，所起效果与上述相同，在此不再赘述。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
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为本申请一些实施例的一种用电装置为车辆的示意图；
图2为本申请一些实施例的电池包的分解结构示意图；
图3为本申请一些实施例的电池单体的分解结构示意图；
图4为本申请一些实施例的隔离板的轴测图；
图5为图4的局部视图；
图6为本申请一些实施例的电池模组的分解结构示意图；
图7为本申请一些实施例的导流件的轴测图；
图8为图7的I处局部放大视图。
具体实施方式中的附图标号如下：
车辆1000；
电池包100；
电池包外壳10，箱体11，上盖12；
电池单体20，顶盖组件21，电极端子21a，外壳22，电芯组件23，正极耳23a，负极耳23b，第一泄气口23c；
隔离板30，隔离板本体31，排气罩32，排气孔321，第一方向B，第二方向A，隔离板本体的厚度方向C；
导流件40，第一导流口41，第二导流口42；
控制器200；
马达300。
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。
申请人注意到，电池的电芯热失控时，从顶部排气，排气孔朝上设置，而排气孔与电池模组或电池包的顶盖的间隙较小，容易造成困气，排气时气体冲击顶盖，可能会造成电池爆裂而引起电池的失效。
为了解决上述问题，申请人研究发现，可改变排气孔的朝向，使排气孔从侧面排气，可以避免排气孔对电池模组或电池包的顶盖的冲击，并在隔离板上设置多个方位的排气孔，以增加排气速度，使气体及时排出，进一步避免出现“困气”的现象，从而降低电池爆裂的风险。
本申请实施例提供一种用电装置，包括电池单体或电池包，电池单体或电池包为用电装置提供电能。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，以本申请一些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的内部设置有电池包100，电池包100可以设置在车辆1000的底部或头部或尾部。电池包100可以用于车辆1000的供电，例如，电池包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用来控制电池包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，电池包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包100的分解结构示意图。电池包100包括电池包外壳10和至少一个电池单体20，电池单体20容纳于电池包外壳10内。其中，电池包外壳10用于为电池单体20提供容纳空间，电池包外壳10可以采用多种结构。在一些实施例中，电池包外壳10可以包括箱体11和上盖12，箱体11与上盖12相互盖合，箱体11和上盖12共同限定出用于容纳电池单体20的容纳空间。上盖12可以为一端导入口的空心结构，箱体11可以为板状结构，箱体11盖合于上盖12的导入口侧，以使箱体11与上盖12共同限定出容纳空间；箱体11和上盖12也可以是均为一侧导入口的空心结构，箱体11的导入口侧盖合于上盖12的导入口侧。当然，箱体11和上盖12形成的箱体11可以是多种形状，比如，T形、长方体等。
在电池包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11内；当然，电池包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11内。电池包100还可以包括其他结构，例如，该电池包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是指组成电池包的最小单元。电池单体20包括有顶盖组件21、外壳22、电芯组件23以及其他的功能性部件。
顶盖组件21是指盖合于外壳22的导入口处以将电池单体20的内部环境隔绝于外 部环境的部件。不限地，顶盖组件21的形状可以与外壳22的形状相适应以配合外壳22。可选地，顶盖组件21可以由具有一定硬度和强度的材质(如铝合金)制成，这样，顶盖组件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。顶盖组件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，顶盖组件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。顶盖组件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，在顶盖组件21的内侧还可以设置有绝缘件，绝缘件可以用于隔离外壳22内的电连接部件与顶盖组件21，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
外壳22是用于配合顶盖组件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。外壳22和顶盖组件21可以是独立的部件，可以于外壳22上设置导入口，顶盖组件21盖合导入口以形成电池单体20的内部环境。不限地，也可以使顶盖组件21和外壳22一体化，具体地，顶盖组件21和外壳22可以在其他部件入壳前先形成一个共同的连接面，当需要封装外壳22的内部时，再使顶盖组件21盖合外壳22。外壳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，外壳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。外壳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20中发生电化学反应的部件。外壳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。正极耳23a和负极耳23b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。
以下实施例为了方便说明，以本申请一些实施例的一种隔离板30为例进行说明。
请参照图4和图5，本申请的一种隔离板30包括多个排气孔321，多个排气孔321中的部分排气孔321的排气方向沿第一方向B设置，多个排气孔321中的另一部分排气孔的排气方向沿第二方向A设置，其中，第一方向B和第二方向A分别与竖直方向成夹角设置，且第一方向B和第二方向A之间呈夹角设置。
可以理解地是，本申请中的竖直方向为隔离板30的厚度方向。
第一方向B与第二方向A可以垂直，也可以不垂直，在此不做具体限定。
第一方向B和第二方向A分别与竖直方向呈夹角设置，指第一方向B和第二方向A均不与竖直方向重合。
第一方向B和第二方向A之间呈夹角设置，指第一方向B和第二方向A不重合。
图4-图7示出了第一方向B、第二方向A和隔离板本体的厚度方向C。
排气孔321至少朝向第一方向B和第二方向A设置，可以避免从顶部排气引起困气而造成电池模组或电池包顶部爆裂的风险，从而可防止电池模组或电池包失效的问题发生。
在一些实施例中，第一方向B为电池模组的长度方向，第二方向A为电池模组的宽度方向。
由此，排气方向可沿电池模组的长度方向和宽度方向，可以将气体快速排入电池模组的内部空间并及时排出。
在一些实施例中，隔离板包括隔离板本体31和排气罩32。其中，排气罩32凸出设置在隔离板本体的厚度方向C的一侧，并与隔离板本体31连接，排气罩32的内部空间形成排气通道，沿隔离板本体的厚度方向C，排气通道贯通隔离板本体31，多个排气孔321位于排气罩32上。
排气罩32的形状可以为但不限于方形、圆形、梯形等，可以根据实际需要具体设定。
排气罩32与隔离板本体31连接指排气罩32与隔离板本体31相对固定在一起不能移动。
示例性地，排气孔321设置在排气罩32的侧面上，而排气罩32的顶面不设置排气孔321，排气孔321至少朝向第一方向B和第二方向A设置，第一方向B与第二方向A可以与隔离板本体的厚度方向C垂直，也可以不垂直。
示例性地，排气孔321设置在排气罩32的顶面上，排气孔321的数量为多个，至少朝向第一方向B和第二方向A设置，第一方向B与第二方向A与隔离板本体的厚度方向C垂直。
示例性地，排气孔321设置在排气罩32的顶面和侧面，排气孔321至少朝向第一方向B和第二方向A设置，顶面的排气孔321的朝向与隔离板本体的厚度方向C垂直，而侧面的排气孔321的朝向可以与隔离板本体的厚度方向C垂直，也可以不垂直。
排气罩32设置在隔离板本体31上，一方面增加了储气空间，可避免“困气”，另一方面提高了隔离板30的整体刚度。
在一些实施例中，排气罩32与隔离板本体31可拆卸连接或一体成型设置。
排气罩32与隔离板本体31可拆卸连接可以是但不限于螺钉连接、铆接、热熔焊接、卡接等。
排气罩32与隔离板本体31一体成型可以是但不限于热压成型、一体注塑成型等。
排气罩32与隔离板本体31可拆卸连接或一体成型设置，可使排气罩32与隔离板本体31可靠连接在一起。
在一些实施例中，请参照图4和图5，排气罩32的形状为长条形。
示例性地，隔离板本体31为长条形，隔离板本体31的长度方向与排气罩32的长度方向相同，隔离板本体31也可以为其它形状，在此不做具体限定。
排气罩32的形状为长条形，可进一步增加隔离板30的刚度，提高隔离板30的抗弯性能。
在一些实施例中，排气罩32的数量为一个，排气罩32的长度方向与第一方向B相同。
排气罩32的数量可以为一个，排气罩32上设有排气孔321，可增加排气量，实现电池包或电池模组热失效时的快速排气，降低电池爆裂的风险，同时也增加隔离板30的整体刚度。
在一些实施例中，排气罩32的数量为多个，多个排气罩32沿第一方向B间隔设置。
排气罩32的数量为多个，每个排气罩32上设有排气孔，可增加排气量，实现电池包或电池模组热失效时的快速排气，降低电池爆裂的风险，同时也增加隔离板30的整体刚度。
在一些实施例中，排气罩32的顶部设有至少一个排气孔321，排气孔321被构造为排气孔321的喷射方向与竖直方向成夹角设置。
排气罩32的顶部指沿隔离板本体的厚度方向C，排气罩32远离隔离板本体31的一侧面。
可以避免排气孔321排出的气体直接喷向电池模组或电池包的顶盖。
以下实施例为了方便说明，以本申请一些实施例的一种隔离板组件为例进行说明。
本申请的隔离板组件包括上述隔离板30。
具体可选的，隔离板组件还包括巴片、电路板，隔离板上设有多个间隔布置的巴片安装位和电路板，每个巴片安装位上安装有巴片。巴片用于将相邻两个电池单体电连接。
本申请的隔离板组件包括上述隔离板的全部技术特征，所起效果与上述相同，在 此再赘述。
以下实施例为了方便说明，以本申请一些实施例的一种电池模组为例进行说明。
请参照图6，本申请的电池模组包括至少一个电池单体和上述隔离板30。其中，电池单体的顶部设有第一泄气口23c，隔离板30位于至少一个电池单体的顶部，排气孔321与第一泄气口23c连通。
第一泄气口23c内设有第一泄压机构，第一泄压机构可以为防爆阀或温敏顶盖。
当电池单体20内的电芯热失控时，电池单体20内的气体依次经过第一泄气口23c和排气口排出，排气口的设置，可以避免气体直接吹向电池模组的顶盖(目前的排气口直接朝向顶盖，顶盖与排气口间隙小不容易使气体及时排出，出现“困气”现象)。
在一些实施例中，电池单体20的底部还设有泄压机构。
泄压机构可以为但不限于防爆阀。
通过泄压机构的设置，可以使电池模组的电芯组件热失控时同时从顶部和底部排气，以使电芯组件内部的气体及时排出，进一步降低电池模组或电池包爆裂的风险。
以下实施例为了方便说明，以本申请一些实施例的一种电池包为例进行说明。
请参照图6，本申请的电池包包括箱体(图中未示出)和上述电池模组，电池模组设于箱体内。
本申请的电池包包括上述电池模组的全部技术特征，所起效果与上述相同，在此再赘述。
在一些实施例中，电池模组的侧壁与箱体的侧壁设有间隙，电池包还包括导流件40，电池模组的底部与箱体的底部之间设有导流件40，导流件40设有第一导流口41以及与第一导流口41相通的第二导流口42，第二导流口42与间隙连通，第一导流口41与电池单体20的泄压机构相对设置。
可以将电池热失控的气体从底部横向导出至箱体的侧壁与电池模组的侧壁之间的间隙中，加快电池热失控时的排气速度，避免局部出现困气，进一步降低模组/电池包爆裂风险。
在一些实施例中，请参照图6-图8，第一导流口41沿隔离板30的厚度方向贯通导流件40，第二导流口42沿第一方向B设置。
隔离板30的厚度方向与隔离板本体的厚度方向C相同。
具体可选的，导流件40可以为长条形的结构，当电芯组件23数量为多个时，导流件40的长度方向与电芯组件23的排列方向相同。
可选的，第二导流口42可以为豁口的结构，豁口朝向第二方向A的一侧。
导流件40可以更好地将电池模组底部排出的气体导入至箱体的侧壁与电池模组的 侧壁之间的间隙中，避免底部出现排气困难而出现“困气”的问题。
以下实施例为了方便说明，以本申请一些实施例的一种隔离板30为例进行说明。
请参照图4-图8，本申请的一种隔离板30包括多个排气孔321，多个排气孔321中的部分排气孔321的排气方向沿第一方向B设置，多个排气孔321中的另一部分排气孔的排气方向沿第二方向A设置，其中，第一方向B和第二方向A分别与竖直方向成夹角设置，且第一方向B和第二方向A之间呈夹角设置。
第一方向B为电池模组的长度方向，第二方向A为电池模组的宽度方向。
隔离板包括隔离板本体31和排气罩32。其中，排气罩32凸出设置在隔离板本体的厚度方向的一侧，并与隔离板本体31连接，排气罩32的内部空间形成排气通道，沿隔离板本体的厚度方向，排气通道贯通隔离板本体31，多个排气孔321位于排气罩32上。
排气罩32与隔离板本体31可拆卸连接或一体成型设置。
可选的，排气罩32的数量为一个，排气罩32的长度方向与第一方向B相同。
可选的，排气罩32的数量为多个，多个排气罩32沿第一方向B间隔设置。
可选的，排气罩32的顶部设有至少一个排气孔321，排气孔321被构造为排气孔321的喷射方向与竖直方向成夹角设置。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各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，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，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范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (15)

  1. 一种隔离板，用于电池模组中，其特征在于，所述隔离板包括：
    多个排气孔，多个所述排气孔中的部分所述排气孔的排气方向沿第一方向设置，多个所述排气孔中的另一部分所述排气孔的排气方向沿第二方向设置，其中，所述第一方向和所述第二方向分别与竖直方向呈夹角设置，且所述第一方向和所述第二方向呈夹角设置。
  2. 根据权利要求1所述的隔离板，其特征在于，所述第一方向为所述电池模组的长度方向，所述第二方向为所述电池模组的宽度方向。
  3. 根据权利要求1或2所述的隔离板，其特征在于，所述隔离板包括：
    隔离板本体；
    排气罩，所述排气罩凸出设置在所述隔离板本体的厚度方向的一侧，并与所述隔离板本体连接，所述排气罩的内部空间形成排气通道，沿所述隔离板本体的厚度方向，所述排气通道贯通所述隔离板本体，多个所述排气孔位于所述排气罩上。
  4. 根据权利要求3所述的隔离板，其特征在于，所述排气罩与所述隔离板本体固定连接或一体成型设置。
  5. 根据权利要求3或4所述的隔离板，其特征在于，所述排气罩的形状为长条形。
  6. 根据权利要求5所述的隔离板，其特征在于，所述排气罩的数量为一个，所述排气罩的长度方向与所述第一方向相同。
  7. 根据权利要求5所述的隔离板，其特征在于，所述排气罩的数量为多个，多个所述排气罩沿所述第一方向间隔设置。
  8. 根据权利要求3-7任一项所述的隔离板，其特征在于，所述排气罩的顶部设有至少一个所述排气孔，所述排气孔被构造为所述排气孔的喷射方向与竖直方向成夹角设置。
  9. 一种隔离板组件，其特征在于，包括权利要求1-8任一项所述的隔离板。
  10. 一种电池模组，其特征在于，具有根据权利要求9所述的隔离板组件，所述电池模组包括：
    至少一个电池单体，所述电池单体的顶部设有第一泄气口；所述隔离板位于所述至少一个电池单体的顶部，所述排气孔与所述第一泄气口连通。
  11. 根据权利要求10所述的电池模组，其特征在于，所述电池单体的底部还设有泄压机构。
  12. 一种电池包，其特征在于，包括：
    箱体；
    权利要求11所述的电池模组，所述电池模组设于所述箱体内。
  13. 根据权利要求12所述的电池包，其特征在于，所述电池模组的侧壁与所述箱体的侧壁设有间隙，所述电池包还包括导流件，所述电池模组的底部与所述箱体的底部之间设有所述导流件，所述导流件设有第一导流口以及与所述第一导流口相通的第二导流口，所述第二导流口与所述间隙连通，所述第一导流口与所述电池单体的泄压机构相对设置。
  14. 根据权利要求13所述的电池包，其特征在于，所述第一导流口沿所述隔离板的厚度方向贯通所述导流件，所述第二导流口沿所述第一方向设置。
  15. 一种用电装置，其特征在于，包括权利要求10或11所述的电池模组；所述电池模组用于提供电能；或者包括权利要求12-14任一项所述的电池包，所述电池包用于提供电能。
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