Battery system, electric equipment and energy storage equipment

Abstract

The utility model provides a battery system, electric equipment and energy storage equipment. The battery system comprises a battery, the battery comprises a box body and a battery monomer arranged in the box body, and the battery monomer comprises a monomer shell, a battery cell positioned in the monomer shell and a first pressure relief mechanism arranged on the monomer shell; wherein the battery system comprises a flue gas discharge channel, and the flue gas discharge channel is configured to discharge gas, discharged from the first pressure relief mechanism, in the battery single body out of the battery system along the flue gas discharge channel; the flue gas emission channel comprises one or more climbing sections, and the height of the ending end of each climbing section is larger than that of the starting end of each climbing section. The electric equipment and the energy storage equipment respectively comprise the battery system.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and in particular to a battery system, electrical device, and energy storage device. Background Technology

[0002] When a battery in a battery energy storage system or power battery system (collectively referred to as a battery system) experiences thermal runaway, it releases a large amount of flammable gas. If this flammable gas comes into contact with oxidizers such as oxygen after being released outside the battery system, it can be easily ignited by a tiny ignition source, causing violent combustion or even an explosion, thus creating a safety hazard.

[0003] In related technologies, the battery system collects and discharges the flue gas generated during thermal runaway, directing it to a pressure relief port via a horizontal flue gas discharge channel. However, this method of collecting and discharging flammable gases generated during thermal runaway results in high-temperature flue gas containing a significant amount of flammable electrolyte vapor, thus posing a considerable safety hazard. Summary of the Invention

[0004] This disclosure provides a battery system, electrical device, and energy storage device for collecting, treating, and discharging combustible gases generated by thermal runaway, aiming to reduce safety hazards of battery systems.

[0005] This disclosure provides a battery system, including a battery. The battery includes a housing and battery cells disposed within the housing. Each battery cell includes a casing, a cell located within the casing, and a first pressure relief mechanism disposed on the casing. The battery system includes a flue gas emission channel configured to discharge gas from the cell casing discharged by the first pressure relief mechanism along the flue gas emission channel to the battery system. The flue gas emission channel includes one or more ascending sections, the height of the terminating end of the ascending section being higher than the height of the starting end.

[0006] The flue gas emission channel of the battery system disclosed herein includes one or more climbing sections. The height of the end of the climbing section is higher than the height of the beginning. After the battery experiences thermal runaway, when the flue gas discharged from the first pressure relief mechanism passes through the climbing section, the potential energy of the flue gas increases and the kinetic energy and internal energy decrease during the climbing process, which helps to reduce the flue gas temperature. Moreover, the electrolyte vapor is more likely to be cooled and condensed. Under the action of gravity, it is easier to separate from the remaining gases in the combustible gas generated by thermal runaway, so that there is less electrolyte vapor in the flue gas discharged from the flue gas emission channel, thereby helping to reduce safety hazards.

[0007] In some embodiments of the battery system, at least one climbing section is configured to allow the flue gas within it to flow upward at an angle relative to the horizontal direction.

[0008] At least one climbing section is configured such that the flue gas within it flows upward at an angle relative to the horizontal direction, giving the climbing section a longer flow path within a certain climbing height, which is beneficial for reducing the flue gas temperature and achieving more complete electrolyte separation.

[0009] In some embodiments of the battery system, at least one climbing section is located inside the housing; and / or at least one climbing section is located outside the housing.

[0010] The climbing section can be located inside the battery housing, outside the battery housing, or both inside and outside the battery housing, allowing for flexible configuration based on the battery system's installation and usage environment.

[0011] In some embodiments of the battery system, at least one ramp extends from one end of the battery to the other.

[0012] The climbing section extends from one end of the battery to the other, which helps to make the climbing section have a certain length, thereby facilitating the more complete cooling of flue gas and separation of electrolyte, and reducing safety hazards.

[0013] In some embodiments of the battery system, at least two of the multiple climbing segments have the same angle to the horizontal plane; and / or at least two of the multiple climbing segments have different angles to the horizontal plane.

[0014] Having at least two climbing sections with the same angle to the horizontal plane and / or at least two climbing sections with different angles to the horizontal plane are both beneficial for making full and reasonable use of the battery's own structure and / or the battery system's structure and space to reasonably set the number, position and angle of the climbing sections, thereby facilitating sufficient flue gas cooling and electrolyte separation.

[0015] In some embodiments of the battery system, at least two of the multiple ramp segments are arranged adjacent to each other; and at least two of the multiple ramp segments are arranged at intervals.

[0016] Setting at least two climbing sections adjacent to each other and / or setting at least two climbing sections spaced apart are both beneficial for making full and reasonable use of the battery's own structure and / or the battery system's structure and space to reasonably set the number, position and angle of the climbing sections, thereby facilitating sufficient flue gas cooling and electrolyte separation.

[0017] In some embodiments of the battery system, at least one climbing section is formed by a housing and a battery pack comprising multiple battery cells.

[0018] At least one climbing section is formed by a housing and a battery pack including multiple battery cells, which helps to maximize the cross-sectional area of ​​the flue gas emission channel, reduce the flue gas pressure, make the electrolyte easier to condense, and separate more fully from the remaining gases in the combustible gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0019] In some embodiments of the battery system, the battery includes a thermal management component disposed within a housing, and at least a portion of the flue gas emission passage is formed by the thermal management component and the housing.

[0020] The flue gas emission channel is formed by thermal management components and a housing, which helps to reduce the temperature of the combustible gas generated by thermal runaway under the action of the thermal management components, making the electrolyte easier to condense and more fully separate from the remaining gases in the combustible gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0021] In some embodiments of the battery system, the battery includes a thermal management component disposed within a housing, at least one ramp section located on the side of the thermal management component away from the battery cell and between the thermal management component and the housing; or the ramp section and the thermal management component are located at opposite ends of the battery cell, respectively.

[0022] At least one climbing section is located on the side of the thermal management component away from the battery cell and between the thermal management component and the housing. This allows the flammable gas generated by thermal runaway to have its temperature reduced by the thermal management component during or before the climb, making it easier for the electrolyte to condense and separate more fully from the remaining gases in the flammable gas generated by thermal runaway, thereby reducing safety hazards.

[0023] The climbing section and thermal management components are located at opposite ends of the battery cell, which facilitates the separate installation of the climbing section and thermal management components, ensuring that their arrangement is not affected by the other.

[0024] In some embodiments of the battery system, the thermal management component is located below the battery cell, and at least one ramp is located below the thermal management component.

[0025] By positioning the thermal management component below the battery cell and at least one ramp section below the thermal management component, it is possible to separate the battery cell from the flammable gas generated by thermal runaway through the thermal management component, thereby reducing the impact of the flammable gas generated by thermal runaway on the battery cell. Furthermore, the thermal management component can cool the flue gas, reduce the flue gas temperature, make the electrolyte easier to condense, and more fully separate it from the remaining gases in the flammable gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0026] In some embodiments of the battery system, the battery includes a nozzle configured to inject a heat exchange medium into a flue gas emission channel.

[0027] This setting helps to reduce the flue gas temperature, allowing for more complete separation of the electrolyte from the remaining gases in the combustible body generated by thermal runaway, thereby reducing safety hazards.

[0028] In some embodiments of the battery system, the nozzle is configured to spray a heat exchange medium into at least one climbing section.

[0029] Injecting the heat exchange medium into the climbing section allows more electrolyte to separate from the remaining gases in the combustible gas under gravity, thus reducing safety hazards.

[0030] In some embodiments of the battery system, at least one ramp is located above the battery cell; and / or at least one ramp is located below the battery cell.

[0031] The climbing section can be set above the battery cell, below the battery cell, or both above and below the battery cell, which allows for flexible arrangement of the climbing section according to the internal structure of the battery.

[0032] In some embodiments of the battery system, the battery includes a second pressure relief mechanism disposed on the housing, located upstream or at the end of the flue gas emission channel.

[0033] A partial flue gas emission channel can be set up after the second pressure relief mechanism, that is, the second pressure relief mechanism is located upstream of the end of the flue gas emission channel, or the second pressure relief mechanism can be used as the end of the flue gas emission channel. This setting allows for greater flexibility in the position and length of the flue gas emission channel, which is beneficial for reducing the flue gas temperature to below the specified temperature and the electrolyte content in the flue gas to below the specified content before being discharged to the outside, thereby reducing safety hazards.

[0034] In some embodiments of the battery system, the battery system includes: at least one layered plate configured to layer the flue gas emission passage in the vertical direction to form a multi-layered baffle channel; and / or at least one baffle plate disposed within the flue gas emission passage and configured to layer the flue gas emission passage in the horizontal direction to form a multi-layered baffle channel.

[0035] The installation of a layered plate that divides the flue gas emission channel into multiple layers in the vertical direction and forms a multi-layered baffle channel, along with baffles installed within the flue gas emission channel, can extend the flow path of the flue gas and cool the flowing flue gas. On the other hand, the centrifugal force during flue gas baffles can be used to assist in the separation of the electrolyte and other gases, thereby ensuring more thorough separation of the electrolyte from the other gases in the combustible gas generated by thermal runaway and reducing safety hazards.

[0036] In some embodiments of the battery system, at least part of the baffle is located within the ramp section.

[0037] Baffles are installed in the climbing section to help reduce the temperature of the flue gas as it climbs and to extend the climbing path, thereby reducing the flue gas temperature, making it easier for the electrolyte to condense, and allowing for more complete separation from the remaining gases in the combustible gas produced by thermal runaway, thus helping to reduce safety hazards.

[0038] In some embodiments of the battery system, at least a portion of the baffle is configured to cause gas in the exhaust channel to reciprocate in a direction parallel to the bottom surface of the housing; and / or at least a portion of the baffle is configured to cause gas in the exhaust channel to reciprocate in a direction perpendicular to the bottom surface of the housing.

[0039] The above-mentioned baffle arrangement in the flue gas emission channel allows for more flexible flue gas flow path setting, which is conducive to extending the flue gas flow path and making the flue gas deflection obvious. This facilitates the separation of electrolyte and other gases by centrifugal force, and makes the separation of electrolyte and other gases in the combustible body generated by thermal runaway more complete, thereby helping to reduce safety hazards.

[0040] In some embodiments of the battery system, at least one climbing section includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction.

[0041] The climbing section includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction. This allows the pressure and velocity of the flue gas to gradually decrease during the flow process, making it easier for the electrolyte to condense and separate from the remaining combustible gases, thereby helping to reduce safety hazards.

[0042] In some embodiments of the battery system, at least one climbing section includes at least one wall surface at an angle of 5° to 60° to the horizontal plane.

[0043] Setting the angle between the wall of the climbing section and the horizontal plane in a reasonable manner helps to ensure that a certain climbing length corresponds to a certain climbing height, thereby facilitating the reduction of flue gas temperature and more complete electrolyte separation.

[0044] The flue gas emission channel includes emission sections other than the climbing section, which helps to increase the length of the flue gas emission channel. At the junction of the climbing section and other emission sections, the flue gas is deflected, which helps to reduce the flue gas temperature and separate the electrolyte from the flue gas, thereby reducing safety hazards.

[0045] In some embodiments of the battery system, the battery system includes a battery mounting section, which includes a mounting platform on which the battery is mounted.

[0046] The battery is installed on the mounting platform, and its stable working position helps stabilize the position of the flue gas emission channel. This, in turn, helps the climbing section maintain its direction and ensures that the climbing section functions stably during flue gas emission, thereby reducing safety hazards.

[0047] In some embodiments of the battery system, the bottom surface of the battery is inclined relative to the horizontal plane on the mounting platform.

[0048] By setting the bottom of the battery at an angle relative to the horizontal plane on the mounting platform, the flue gas emission channel inside the battery, which is parallel to the bottom of the battery, can form a climbing section. This allows the flue gas emission channel to include the climbing section without modifying the internal structure of the battery.

[0049] In some embodiments of the battery system, the angle between the bottom surface of the battery and the horizontal plane is 5° to 60°.

[0050] The angle between the bottom surface of the battery and the horizontal plane is 5° to 60°, which helps to ensure that a certain climbing length corresponds to a certain climbing height, thereby facilitating the reduction of flue gas temperature and more complete electrolyte separation.

[0051] In some embodiments of the battery system, the battery mounting section includes a mounting section flue wall disposed on the mounting platform, and at least one climbing section is formed by the mounting section flue wall or by the mounting section flue wall and the housing together.

[0052] By installing a climbing section on the outside of the enclosure through the flue wall of the installation section, the same climbing height requirement can be achieved without setting or with fewer climbing sections inside the battery, thereby reducing or eliminating the need to modify the internal structure of the battery; it is also possible to set the length of the flue gas emission channel and the length and climbing height of the climbing section according to the gas emission requirements after thermal runaway, without being limited by the battery structure, making it easier to meet the flue gas treatment requirements.

[0053] In some embodiments of the battery system, the battery mounting section includes a third pressure relief mechanism, which is disposed on the flue wall of the mounting section and located at the end of the flue gas emission channel.

[0054] Placing the third pressure relief mechanism at the end of the flue gas emission channel can control the flow rate and pressure of the gas discharged from the flue gas emission channel, which helps to reduce safety hazards.

[0055] In some embodiments of the battery system, the pressure relief port of the first pressure relief mechanism faces the flue gas emission channel to discharge gas directly into the flue gas emission channel.

[0056] The pressure relief port of the first pressure relief mechanism faces the flue gas emission channel, which allows the combustible gas generated by thermal runaway to be discharged from the pressure relief port of the first pressure relief mechanism and immediately fill the flue gas emission channel. After being guided and treated by the flue gas emission channel, it is discharged from the battery system, which can reduce the impact of combustible gas generated by thermal runaway on battery cells that have not experienced thermal runaway.

[0057] In some embodiments of the battery system, the battery system is a power battery system or a battery energy storage system.

[0058] Whether the battery system in this disclosure is a power battery system or a battery energy storage system, it can reduce safety hazards.

[0059] A second aspect of this disclosure provides an electrical device including a battery system according to the first aspect of this disclosure, the battery system being used to supply power to the electrical device.

[0060] The electrical equipment disclosed herein has the advantages of the battery system disclosed herein.

[0061] A third aspect of this disclosure provides an energy storage device, including the battery system of the first aspect of this disclosure, wherein the energy storage device uses the battery of the battery system as an energy storage carrier.

[0062] The energy storage device disclosed herein has the advantages of the battery system disclosed herein. Attached Figure Description

[0063] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0064] FIG. 1 This is a schematic diagram of the structure of an electrical device according to an embodiment of the present disclosure;

[0065] FIG. 2 This is an exploded structural diagram of a battery according to an embodiment of the present disclosure;

[0066] FIG. 3 This is an exploded structural diagram of a battery cell according to an embodiment of the present disclosure;

[0067] FIG. 4 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure;

[0068] FIG. 5 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure;

[0069] FIG. 6 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure;

[0070] FIG. 7 This is a cross-sectional view of a battery system according to an embodiment of the present disclosure;

[0071] FIG. 8 yes FIG. 7 A partially enlarged structural schematic diagram of the battery system in the illustrated embodiment;

[0072] FIG. 9 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure;

[0073] FIG. 10 yes FIG. 9 The exhaust path schematic diagram of the flue gas emission channel including the baffle plate in the embodiment shown is a schematic diagram of the exhaust path.

[0074] FIG. 11 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure; and

[0075] FIG. 12 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure.

[0076] The accompanying drawings are not drawn to scale. Detailed Implementation

[0077] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure, that is, this disclosure is not limited to the described embodiments.

[0078] In the description of this disclosure, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0079] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this disclosure. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0080] In the process of developing the technical solution disclosed herein, the inventors discovered that if flue gas is only collected and emitted without electrolyte separation and treatment, there are still significant safety hazards.

[0081] Therefore, this disclosure provides a battery system that utilizes a flue gas emission channel to collect, treat, and discharge combustible gases generated by thermal runaway, thereby reducing the safety hazards of the battery system. This battery system can be a power battery system or a battery energy storage system. Furthermore, this disclosure also provides an electrical device incorporating this battery system, and an energy storage device incorporating this battery system.

[0082] This disclosure provides an electrical device that uses a battery system as a power source, the battery system being configured to provide electrical energy to the device. The electrical device can be, but is not limited to, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0083] This disclosure provides an energy storage device that uses a battery system as an energy storage carrier. In this energy storage device, the battery system is a battery energy storage system. The battery energy storage system utilizes secondary batteries such as lithium batteries / lead-ion batteries as energy storage carriers to store electrical energy for a certain period of time and to supply electrical energy for a certain period of time.

[0084] The battery mentioned in the embodiments of this disclosure refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this disclosure may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0085] In this disclosure, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this disclosure are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this disclosure are not limited to these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this disclosure are not limited to these.

[0086] A single battery cell mainly consists of a cell, electrolyte, casing, and end cap assembly. A cell may include one, two, or more electrode assemblies. The cell is encapsulated within the casing by the end caps of the end cap assembly. The electrolyte is added to this casing, and the electrode assemblies are housed within the casing's internal space. The electrode assemblies are the components within the battery cell where electrochemical reactions occur.

[0087] The electrode assembly mainly consists of a positive electrode, a negative electrode, and a separator. A single battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The electrode assembly can be a wound structure or a stacked structure.

[0088] A housing is a component used to provide a space to house the electrode assembly, electrolyte, and other parts. Housings can come in various shapes and sizes, such as cuboids, cylinders, and hexagonal prisms. Specifically, the shape of the housing is determined based on the specific shape and size of the electrode assembly. The housing can be made of materials such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic.

[0089] An end cap is a component that covers the opening of the battery casing to isolate the internal environment of the battery cell from the external environment. The casing and the end cap together constitute the outer shell of the battery cell. The shape of the end cap can be adapted to the shape of the casing to fit the casing. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when subjected to compression and impact, giving the battery cell higher structural strength and improving safety performance. Functional components such as electrode terminals can be provided on the end cap. The electrode terminals can be used to electrically connect to the electrode assembly for outputting or inputting electrical energy into the battery cell. The material of the end cap can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments disclosed herein are not limited thereto.

[0090] A pressure relief mechanism can also be provided on the cell casing, such as on the end cap or the housing, to release internal pressure when the internal pressure or temperature of the cell reaches a threshold. When the internal pressure or temperature of the cell reaches a predetermined threshold, the pressure relief mechanism actuates or a weak structure within the mechanism is damaged, thereby creating an opening or channel for the release of internal pressure or temperature within the cell casing. FIG. 3 As shown, the pressure relief mechanism (first pressure relief mechanism 20A) of the battery cell 20 is, for example, an explosion-proof valve provided on the end cap.

[0091] The housing and end cap can be separate components. The housing has an opening, and the end cap closes the opening to form the internal environment of the battery cell. Alternatively, the end cap and housing can be integrated. Specifically, the end cap and housing can form a common connection surface before other components are installed into the housing. When it is necessary to encapsulate the interior of the housing, the end cap closes the housing, thus encapsulating the housing and end cap as a single unit.

[0092] In some embodiments of the battery cell, an insulating element may be provided inside the end cap. The insulating element can be used to isolate the electrical connection components inside the housing from the end cap to reduce the risk of short circuits. For example, the insulating element may be an insulating board, which may be made of materials such as plastic or rubber.

[0093] The end cap and the various components mounted on the end cap, such as electrode terminals, explosion-proof valves, and insulating plates, form an end cap assembly.

[0094] The following description uses an electrical device—vehicle D—as an example from some embodiments of this disclosure to illustrate the electrical device and its battery B.

[0095] Please refer to FIG. 1 . FIG. 1 This is a schematic diagram of the structure of a vehicle D provided in some embodiments of this disclosure. Vehicle D can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery B is installed inside vehicle D, and battery B can be located at the bottom, front, or rear of vehicle D. Battery B can be used to power vehicle D, for example, it can serve as the operating power source for vehicle D.

[0096] In some embodiments of this disclosure, battery B can not only serve as the operating power source for vehicle D, but also as the driving power source for vehicle D, replacing or partially replacing fuel or natural gas to provide driving power for vehicle D.

[0097] Please refer to FIG. 2 . FIG. 2 An exploded view of battery B provided in some embodiments of this disclosure.

[0098] Battery B includes a housing 1 and battery cells 20 housed within the housing 1. The housing 1 includes a shell 11 and a cover 12 fastened to the shell 11, providing space for the battery cells 20. In the above embodiment, the housing 1 is generally rectangular; however, in embodiments not shown, the housing 1 can also be other shapes, such as a cylinder. The housing 1 may also be equipped with a second pressure relief mechanism 1A for releasing internal pressure when the internal pressure or temperature of battery B reaches a threshold. When the internal pressure or temperature of housing 1 reaches a predetermined threshold, the second pressure relief mechanism 1A activates or a weak structure within the second pressure relief mechanism 1A is damaged, thereby creating an opening or channel for releasing internal pressure or temperature. The second pressure relief mechanism 1A may be, for example, an explosion-proof valve mounted on the cover 12.

[0099] In battery B, there are multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 20 is housed in the casing 1.

[0100] like FIG. 2 As shown, battery B can be composed of multiple battery cells 20 connected in series, parallel, or in a mixed configuration to form battery pack 2. Battery pack 2 can be in the form of a battery module. Multiple battery packs 2 can then be connected in series, parallel, or in a mixed configuration to form a whole and housed within housing 1. Battery B may also include other structures; for example, battery B may also include a busbar component for realizing electrical connection between multiple battery cells 20.

[0101] Please refer to FIG. 3 . FIG. 3 This is an exploded structural diagram of a battery cell 20 according to an embodiment of the present disclosure. The battery cell 20 of this embodiment includes an end cap assembly 21, a housing 22, and a battery cell, the battery cell including two electrode assemblies 24.

[0102] The end cap assembly 21 includes an end cap 211, a positive terminal 212, a negative terminal 213, an explosion-proof valve 20A serving as a first pressure relief mechanism, and an insulating plate 215. The end cap 211 cooperates with the housing 22 to encapsulate the battery cell within the sealed receiving space formed by the end cap 211 and the housing 22. The positive terminal 212 and the negative terminal 213 can be electrically connected to the positive electrode tab 242 and the negative electrode tab 243 of the corresponding electrode assembly 24 via the positive electrode connecting piece 22 and the negative electrode connecting piece 23, respectively. The insulating plate 215 is arranged between the end cap 211 and the positive electrode connecting piece 22 and the negative electrode connecting piece 23, and to provide insulation between the end cap 211 and the positive electrode connecting piece 22 and the negative electrode connecting piece 23, as well as between each electrode assembly 24.

[0103] The following combination FIG. 4 to FIG. 12 The battery system of the present disclosure will be described.

[0104] like FIG. 4 to FIG. 12 As shown, this disclosure provides a battery system. The battery system includes a battery B, which includes a housing 1 and battery cells 20 disposed within the housing 1. Each battery cell 20 includes a cell casing, a battery cell located within the cell casing, and a first pressure relief mechanism 20A disposed on the cell casing. The battery system includes a flue gas emission channel P, configured to discharge gas from the cell casing emitted by the first pressure relief mechanism 20A along the flue gas emission channel P. The flue gas emission channel P includes one or more ascending sections P1, the height of the terminating end of the ascending section P1 being higher than the height of the starting end.

[0105] The flue gas emission channel P of the battery system disclosed herein includes one or more climbing sections P1. The height of the end of the climbing section P1 is higher than the height of the beginning. After the battery B experiences thermal runaway, when the flue gas discharged from the first pressure relief mechanism 20A passes through the climbing section P1, the potential energy of the flue gas increases and the kinetic energy and internal energy decrease during the climbing process, which helps to reduce the flue gas temperature. Moreover, the electrolyte vapor is more likely to be cooled and condensed. Under the action of gravity, it is easier to separate from the remaining gases in the combustible gas generated by thermal runaway, so that there is less electrolyte vapor in the flue gas discharged from the flue gas emission channel P, thereby helping to reduce safety hazards.

[0106] The climbing section P1 can be formed by the structure of battery B itself. For example, the climbing section P1 can be set inside battery B, which is arranged horizontally on the bottom surface. Alternatively, it can be formed by the connection relationship between battery B and other components of the battery system, such as... FIG. 4 to FIG. 7 , FIG. 9 and FIG. 11 As shown, it can be formed by the bottom surface of battery B forming an acute angle with the mounting platform 8, or it can be formed by combining other components of the battery system or other components with the casing, for example, as FIG. 12 As shown, the flue wall 9 of the battery mounting section M of the battery system is formed. Of course, when the flue gas emission channel P has multiple climbing sections P1, the different climbing sections P1 can all be formed by the structure of the battery B itself, all by the connection relationship between the battery B and other components of the battery system, or all by other components of the battery system. The different climbing sections P1 can also be formed by all three of the above methods, or by any two of the above methods.

[0107] In some embodiments of the battery system, such as FIG. 4 to FIG. 9 , FIG. 11 and FIG. 12 As shown, at least one climbing section P1 is configured to allow the flue gas within it to flow upward at an angle relative to the horizontal direction.

[0108] At least one climbing section P1 is configured such that the flue gas within it flows upward at an angle relative to the horizontal direction, giving the climbing section P1 a longer flow path within a certain climbing height, which is beneficial for reducing the flue gas temperature and achieving more complete electrolyte separation.

[0109] In some embodiments of the battery system, such as FIG. 4 to FIG. 9 , FIG. 11 As shown, at least one climbing section P1 is located inside the housing 1; and / or, as FIG. 12 As shown, at least one climbing section P1 is located outside the housing 1.

[0110] The climbing section P1 can be set inside the housing 1 of battery B, outside the housing 1 of battery B, or both inside and outside the housing 1 of battery B. This allows for flexible setting of the climbing section P1 according to the installation and usage environment of the battery system.

[0111] In some embodiments of the battery system, such as FIG. 4 to FIG. 9 , FIG. 11 and FIG. 12 As shown, at least one climbing section P1 extends from one end of the opposite ends of battery B to the other end.

[0112] The climbing section P1 extends from one end of the battery B to the other end, which helps to make the climbing section P1 have a certain length, thereby facilitating the more complete cooling of the flue gas and separation of the electrolyte, and reducing safety hazards.

[0113] In some embodiments of the battery system, at least two of the plurality of climbing segments P1 have the same angle with the horizontal plane; and / or, as FIG. 7 As shown and FIG. 12 As shown, at least two of the multiple climbing sections P1 have different angles with the horizontal plane.

[0114] Having at least two of the multiple climbing sections P1 at the same angle to the horizontal plane and / or having at least two of the multiple climbing sections P1 at different angles to the horizontal plane is beneficial for making full and reasonable use of the structure of the battery B itself and / or the structure and space of the battery system to reasonably set the number, position and angle of the climbing sections P1, thereby facilitating the full cooling of flue gas and separation of electrolyte.

[0115] In some embodiments of the battery system, such as FIG. 7 and FIG. 12 As shown, at least two of the multiple climb sections P1 are arranged adjacently; and / or, as... FIG. 12 As shown, at least two of the multiple climbing sections P1 are set at intervals.

[0116] Having at least two climbing sections P1 adjacent to each other, and / or having at least two climbing sections P1 spaced apart, both facilitate the full and rational use of the structure of the battery B itself and / or the structure and space of the battery system to rationally set the number, position and angle of the climbing sections P1, thereby facilitating the full cooling of flue gas and separation of electrolyte.

[0117] The flue gas emission passage P may include only one or more ramp sections P1, or it may include emission sections other than ramp sections P1, such as... FIG. 9 and FIG. 11 As shown, it may include one or more descending segments P2; and / or, as FIG. 12As shown, it may include one or more horizontal sections P3. The flue gas emission channel P includes emission sections other than the climbing section P1, which helps to increase the length of the flue gas emission channel P. At the junction of the climbing section and other emission sections, the flue gas is deflected, which helps to reduce the flue gas temperature and separate the electrolyte from the flue gas, thereby reducing safety hazards.

[0118] In some embodiments of the battery system, such as FIG. 4 As shown, at least one climbing section P1 is formed by a housing 1 and a battery pack 2 comprising multiple battery cells 20.

[0119] At least one climbing section P1 is formed by a housing 1 and a battery pack 2 including multiple battery cells 20, which helps to maximize the cross-sectional area of ​​the flue gas emission channel P, reduce the flue gas pressure, make the electrolyte easier to condense, and separate more fully from the remaining gases in the combustible gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0120] In some embodiments of the battery system, such as FIG. 5 to FIG. 8 As shown, battery B includes a thermal management component 3 disposed within housing 1, and at least a portion of the flue gas emission channel P is formed by the thermal management component 3 and housing 1.

[0121] The flue gas emission channel P is formed by the thermal management component 3 and the housing 1, which helps to reduce the temperature of the combustible gas generated by thermal runaway under the action of the thermal management component 3, making the electrolyte easier to condense and more fully separate from the remaining gas in the combustible gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0122] In some embodiments of the battery system, battery B includes a thermal management component 3 disposed within housing 1, such as... FIG. 5 and FIG. 7 As shown, at least one climbing section P1 is located on the side of the thermal management component 3 away from the battery cell 20 and between the thermal management component 3 and the housing 1; or as FIG. 6 As shown, the climbing section P1 and the thermal management component 3 are located at opposite ends of the battery cell 20.

[0123] At least one climbing section P1 is located on the side of the thermal management component 3 away from the battery cell 20 and between the thermal management component 3 and the housing 1. This allows the flammable gas generated by thermal runaway to have its temperature reduced by the thermal management component 3 during or before and after the climb, making it easier for the electrolyte to condense and separate more fully from the remaining gas in the flammable gas generated by thermal runaway, thereby reducing safety hazards.

[0124] The climbing section P1 and the thermal management component 3 are located at opposite ends of the battery cell 20, which facilitates the separate installation of the climbing section P1 and the thermal management component 3, so that their arrangement is not affected by the other.

[0125] In some embodiments of the battery system, such as FIG. 5 , FIG. 7 to FIG. 8 As shown, the thermal management component 3 is located below the battery cell 20, and at least one climbing section P1 is located below the thermal management component 3. The thermal management component 3 can be, for example, a heat exchange plate with internal medium channels. The medium channels can be circulated with a heat exchange medium, such as water.

[0126] The thermal management component 3 is positioned below the battery cell 20, and at least one climbing section P1 is positioned below the thermal management component 3. This facilitates the separation of the battery cell 20 from the combustible gas generated by thermal runaway through the thermal management component 3, reducing the impact of the combustible gas generated by thermal runaway on the battery cell 20. Furthermore, the thermal management component 3 can cool the flue gas, reduce the flue gas temperature, make the electrolyte easier to condense, and more fully separate it from the remaining gases in the combustible gas generated by thermal runaway, thereby helping to reduce safety hazards.

[0127] In some embodiments of the battery system, such as FIG. 7 and FIG. 8 As shown, battery B includes nozzle 5, which is configured to inject a heat exchange medium into the flue gas emission channel P. The heat exchange medium may be water.

[0128] This setting helps to reduce the flue gas temperature, allowing for more complete separation of the electrolyte from the remaining gases in the combustible body generated by thermal runaway, thereby reducing safety hazards.

[0129] In some embodiments of the battery system, such as FIG. 7 and FIG. 8 As shown, nozzle 5 is configured to inject heat exchange medium into at least one climbing section P1.

[0130] Injecting the heat exchange medium into the climbing section P1 allows more electrolyte to separate from the remaining gas under gravity, which helps reduce safety hazards.

[0131] In some embodiments of the battery system, such as FIG. 4 and FIG. 12 As shown, at least one climbing section P1 is located above the battery cell 20; or, as FIG. 5 to FIG. 9 , FIG. 11 As shown, at least one ramp section P1 is located below the battery cell 20. Of course, in embodiments not shown, the exhaust gas passage P of the battery system may simultaneously include a ramp section P1 located below the battery cell 20 and a ramp section P1 located above the battery cell 20.

[0132] The climbing section P1 can be set above the battery cell 20, below the battery cell 20, or both above and below the battery cell 20, which allows for flexible arrangement of the climbing section P1 according to the internal structure of the battery B.

[0133] In some embodiments of the battery system, battery B includes a second pressure relief mechanism 1A, which is disposed on housing 1 and located upstream or at the end of flue gas emission channel P. FIG. 4 to FIG. 11 In the illustrated embodiment, the second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, and the flue gas is discharged from the battery system through the second pressure relief mechanism 1A. FIG. 12 In the embodiment shown, the second pressure relief mechanism 1A is located upstream of the end of the flue gas emission channel P. After passing through the second pressure relief mechanism 1A, the flue gas continues to flow in the remaining flue gas emission channel P and is then discharged from the battery system.

[0134] A partial flue gas emission channel P can be set after the second pressure relief mechanism 1A, that is, the second pressure relief mechanism 1A is located upstream of the end of the flue gas emission channel P, or the second pressure relief mechanism 1A can be used as the end of the flue gas emission channel P. This setting allows for greater flexibility in the position and length of the flue gas emission channel P, which is beneficial for reducing the flue gas temperature to below the specified temperature and the electrolyte content in the flue gas to below the specified content before being discharged to the outside, thereby reducing safety hazards.

[0135] In some embodiments of the battery system, such as FIG. 9 to FIG. 11 As shown, the battery system includes: at least one layered plate 6, which is configured to layer the flue gas emission channel P in the vertical direction to form a multi-layered baffle channel; and / or at least one baffle plate 7, which is disposed in the flue gas emission channel P and is configured to layer the flue gas emission channel P in the horizontal direction to form a multi-layered baffle channel.

[0136] The system includes a layered plate 6 that divides the flue gas emission channel P into multiple layers in the vertical direction to form a multi-layered baffle channel, and a baffle plate 7 installed inside the flue gas emission channel P. On the one hand, this extends the flow path of the flue gas and cools the flowing flue gas. On the other hand, it utilizes the centrifugal force during flue gas baffle flow to assist in the separation of the electrolyte and other gases. This allows for more thorough separation of the electrolyte from the other gases in the combustible gas generated by thermal runaway, which helps to reduce safety hazards.

[0137] exist FIG. 9 to FIG. 11 In the illustrated embodiment, only one layered board 6 is included. In embodiments not shown, two or more layers of layered boards 6 may also be provided.

[0138] In some embodiments of the battery system, such as FIG. 9 to FIG. 11 As shown, at least part of the baffle 7 is installed in the climbing section P1.

[0139] A baffle plate 7 is installed in the climbing section P1 to reduce the temperature of the flue gas as it climbs and to extend the climbing path, thereby reducing the flue gas temperature, making it easier for the electrolyte to condense, and allowing for more complete separation from the remaining gases in the combustible body generated by thermal runaway, thus reducing safety hazards.

[0140] exist FIG. 9 to FIG. 10 In the embodiments shown, the baffles 7 are all disposed in the climbing section P1. However, in embodiments not shown, the baffles 7 may also be disposed in other emission sections of the flue gas emission channel P, such as the horizontal section and / or the descending section.

[0141] In some embodiments of the battery system, such as FIG. 11 As shown, at least a portion of the baffle 7 is configured to cause the gas in the flue gas emission channel P to reciprocate in a direction parallel to the bottom surface of the housing 1; and / or, as FIG. 12 As shown, at least part of the baffle 7 is configured to cause the gas in the flue gas emission channel P to reciprocate in a direction perpendicular to the bottom surface of the housing 1.

[0142] The arrangement of the baffle 7 in the flue gas emission channel P allows for more flexible flue gas flow path settings, which is beneficial for extending the flue gas flow path and making the flue gas deflection more obvious. This facilitates the separation of electrolyte and other gases by centrifugal force, and makes the separation of electrolyte and other gases in the combustible body generated by thermal runaway more complete, thereby helping to reduce safety hazards.

[0143] In some embodiments of the battery system, such as FIG. 4 to FIG. 9 As shown, at least one climbing section P1 includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction.

[0144] The climbing section P1 includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction. This allows the pressure and velocity of the flue gas to gradually decrease during the flow process, making it easier for the electrolyte to condense and separate from the other gases, thereby helping to reduce safety hazards.

[0145] In some embodiments of the battery system, at least one climbing section P1 includes at least one wall surface with an angle of 5° to 60° to the horizontal plane.

[0146] Setting the angle between the wall of the climbing section P1 and the horizontal plane is beneficial to ensuring that a certain climbing length corresponds to a certain climbing height, thereby facilitating the reduction of flue gas temperature and more complete electrolyte separation. The angle between at least one wall of at least one climbing section P1 and the horizontal plane can be, for example, 6°, 10°, 20°, 30°, 45°, 55°, etc.

[0147] In some embodiments of the battery system, such as FIG. 11 , FIG. 12 and FIG. 4 to FIG. 9 As shown, the battery system includes a battery mounting part M, which includes a mounting platform 8, on which the battery B is mounted.

[0148] Battery B is installed on the installation platform 8. The stable working position of battery B is conducive to the stability of the flue gas emission channel P, which in turn helps the climbing section P1 maintain its direction and allows the climbing section P1 to function stably during flue gas emission, thereby reducing safety hazards.

[0149] In some embodiments of the battery system, such as FIG. 11 and FIG. 12 As shown, the bottom surface of battery B is inclined relative to the horizontal plane on the mounting platform 8.

[0150] By setting the bottom surface of battery B at an angle relative to the horizontal plane on the mounting platform 8, the flue gas emission channel inside battery B, which is parallel to the bottom surface of battery B, can form a climbing section P1. Without modifying the internal structure of battery B, the flue gas emission channel can include the climbing section P1.

[0151] In some embodiments of the battery system, the bottom surface of battery B forms an angle of 5° to 60° with the horizontal plane.

[0152] The angle between the bottom surface of battery B and the horizontal plane is 5° to 60°. This ensures that a certain climbing length of the climbing section P1 corresponds to a certain climbing height, thereby facilitating a reduction in flue gas temperature and more thorough electrolyte separation. The angle between the bottom surface of battery B and the horizontal plane can be, for example, 8°, 12°, 22°, 30°, 40°, or 50°.

[0153] In some embodiments of the battery system, such as FIG. 12 As shown, the battery mounting section M includes a mounting section flue wall 9 disposed on the mounting platform 8, and at least one climbing section P1 is formed by the mounting section flue wall 9 or by the mounting section flue wall 9 and the housing 1 together.

[0154] By installing a climbing section P1 on the outside of the housing 1 through the flue wall 9 of the installation part, when achieving the same climbing height requirement, the climbing section P1 can be set inside the battery B with little or no climbing section, thereby reducing or eliminating the need to modify the internal structure of the battery B; it is also possible to set the length of the flue gas emission channel P and the length and climbing height of the climbing section P1 according to the gas emission requirements after thermal runaway without being limited by the structure of the battery B, making it easier to meet the flue gas treatment requirements.

[0155] In some embodiments of the battery system, such as FIG. 8 As shown, the battery mounting section M includes a third pressure relief mechanism 9A, which is disposed on the flue wall 9 of the mounting section and located at the end of the flue gas emission channel P.

[0156] By placing the third pressure relief mechanism 9A at the end of the flue gas emission channel P, the flow rate and pressure of the gas discharged from the flue gas emission channel P can be controlled to a certain extent, which helps to reduce safety hazards.

[0157] In some embodiments of the battery system, such as FIG. 4 to FIG. 12 As shown, the pressure relief port of the first pressure relief mechanism 20A faces the flue gas emission channel P so that the gas can be directly discharged into the flue gas emission channel P.

[0158] The pressure relief port of the first pressure relief mechanism 20A faces the flue gas emission channel P, which allows the combustible gas generated by thermal runaway to be discharged from the pressure relief port of the first pressure relief mechanism 20A and immediately charged into the flue gas emission channel P. After being guided and treated by the flue gas emission channel P, it is discharged from the battery system, which can reduce the impact of combustible gas generated by thermal runaway on the battery cells 20 that have not experienced thermal runaway.

[0159] In some embodiments of the battery system, the battery system is a power battery system or a battery energy storage system.

[0160] Whether the battery system in this disclosure is a power battery system or a battery energy storage system, it can reduce safety hazards.

[0161] This disclosure also provides an electrical device, including the battery system of the foregoing embodiments, the battery system being used to supply power to the electrical device.

[0162] The electrical equipment disclosed herein has the advantages of the battery system disclosed herein.

[0163] This disclosure also provides an energy storage device, including the battery system of the foregoing embodiments, wherein the energy storage device uses battery B of the battery system as an energy storage carrier.

[0164] The energy storage device disclosed herein has the advantages of the battery system disclosed herein.

[0165] The following combination FIG. 4 The battery systems of each embodiment of this disclosure will be described in detail.

[0166] FIG. 4 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure.

[0167] like FIG. 2 As shown, the battery system includes battery B and battery mounting section M.

[0168] Battery B includes a housing 1 and a battery pack 2 disposed within the housing 1. The battery pack 2 includes multiple battery cells 20 arranged side-by-side. FIG. 4 The battery cell 20 includes a cell housing consisting of a casing 25 and an end cap 211, a cell located inside the cell housing, and a first pressure relief mechanism 20A disposed on the cell housing. The cell includes two electrode assemblies 24.

[0169] The battery mounting part M includes a mounting platform 8, on which the battery B is mounted. In this embodiment, the upper surface of the mounting platform 8 is horizontal. The bottom surface of the battery B, i.e., the bottom surface of the housing 1, is inclined relative to the upper surface of the mounting platform 8, i.e., relative to the horizontal plane, and is mounted on the mounting platform 8. The connection and fixing method between the battery B and the mounting platform 8 can be through threaded fasteners, snap-fitting, riveting, welding, etc. In the embodiments of this disclosure involving the connection between the battery B and the mounting platform 8, no limitation is made on the connection method between the two.

[0170] like FIG. 4 As shown, the battery system includes a flue gas emission channel P, which is configured to discharge gas from the cell housing emitted by the first pressure relief mechanism 20A into the battery system. The flue gas emission channel P includes a ramp section P1, the terminating end of which ( FIG. 4 The height of the middle right end is higher than that of the starting end. FIG. 4 The height of the middle left end. The climbing section P1 is configured to allow the flue gas within it to flow upward at an angle relative to the horizontal direction.

[0171] In this embodiment, the climbing section P1 is formed by the connection relationship between battery B and other components of the battery system, such as... FIG. 4 As shown, the bottom surface of battery B forms an acute angle with the mounting platform 8. In the battery system of this embodiment, the angle between the bottom surface of battery B and the horizontal plane is 7°. The casing 1 of battery B is generally square, so the angle between the top surface of battery pack 2 and the top wall of casing 1 and the horizontal plane is also 7°.

[0172] The climbing section P1 is located inside the housing 1 and above the battery cell 20, starting from one of the opposite ends of battery B. FIG. 4 (middle left end) extends to the other end ( FIG. 4 (middle right end).

[0173] like FIG. 4 As shown, battery B includes a second pressure relief mechanism 1A, which is mounted on the housing 1. FIG. 4 The middle part is located above the right side wall of the housing 1. The second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, through which the flue gas is discharged from the battery system.

[0174] In this embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. Corresponding to FIG. 5In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces upward. If a battery cell 20 experiences thermal runaway, the first pressure relief mechanism 20A of that battery cell 20 directly releases the high-temperature, high-pressure gas inside the cell casing into the flue gas emission channel P. After entering the flue gas emission channel P, the high-temperature, high-pressure gas quickly fills the entire flue gas emission channel P. When the pressure inside the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. During the flow of the flue gas in the flue gas emission channel P, specifically in the climbing section P1 in this embodiment, the temperature decreases, and the electrolyte mixed in the flue gas condenses and separates better under the action of gravity. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are reduced compared to related technologies.

[0175] The battery system in this embodiment can be installed on electrical equipment as a power battery system, or it can be installed on energy storage equipment as a battery energy storage system.

[0176] FIG. 5 This is a schematic diagram illustrating the principle structure of a battery system according to an embodiment of this disclosure. The following only describes... FIG. 4 The illustrated embodiments and FIG. 5 The differences between the embodiments shown are explained, and the parts not explained can be referred to the relevant descriptions of the foregoing embodiments.

[0177] The climbing section P1 is formed at an acute angle between the bottom surface of battery B and the mounting platform. The angle between the bottom surface of battery B and the horizontal plane is 10°.

[0178] like FIG. 5 As shown, the flue gas emission channel P includes a climbing section P1, and the end of the climbing section P1 ( FIG. 5 The height of the middle right end is higher than that of the starting end. FIG. 5 The height of the middle left end). The climbing section P1 is configured to allow the flue gas inside to flow upward at an angle relative to the horizontal direction. The climbing section P1 is located inside the housing 1 and below the battery cell 20, from one of the opposite ends of the battery B ( FIG. 5 (middle left end) extends to the other end ( FIG. 5 (middle right end).

[0179] like FIG. 5 As shown, the second pressure relief mechanism 1A is installed on the housing 1. FIG. 5 The middle part is located below the right side wall of the housing 1. The second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, through which the flue gas is discharged from the battery system.

[0180] like FIG. 5As shown, a thermal management component 3 is disposed below the battery pack 2 and spaced apart from the bottom wall of the housing 1. The thermal management component 3 is a heat exchange plate with internal medium channels. In this embodiment, the climbing section P1 is located on the side of the thermal management component 3 away from the battery cell 20 and is located between the thermal management component 3 and the housing 1. FIG. 6 As shown, the ascending section P1 is located below the thermal management component 3. The space formed by the thermal management component 3 and the housing 1 constitutes a gas collection chamber. In this embodiment, this gas collection chamber is also the flue gas emission channel P and its ascending section P1. A heat exchange medium can be introduced into the interior of the thermal management component 3. The heat exchange medium is, for example, water.

[0181] In this embodiment, the first pressure relief mechanism 20A of each battery cell 20 is disposed at the bottom of the cell casing, with the pressure relief port facing the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. The plate portion of the thermal management component 3 opposite to each pressure relief port has an opening to avoid the pressure relief port. Corresponding to... FIG. 6 In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces downwards. If a battery cell 20 experiences thermal runaway, the first pressure relief mechanism 20A of that battery cell 20 directly releases the high-temperature, high-pressure gas inside the cell casing into the flue gas emission channel P. After entering the flue gas emission channel P, the high-temperature, high-pressure gas quickly fills the entire flue gas emission channel P. When the pressure inside the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. During the process of the flue gas entering the flue gas emission channel P and flowing within the ascending section P1 of the flue gas emission channel P, the temperature decreases due to the cooling effect of the thermal management component 3, the pressure decreases, and the potential energy increases. The electrolyte mixed in the flue gas condenses and is better separated under the action of gravity. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are reduced compared to related technologies.

[0182] FIG. 5 This is a schematic diagram illustrating the principle structure of a battery system according to an embodiment of this disclosure. The following only describes... FIG. 6 The illustrated embodiments and FIG. 6 The differences between the embodiments shown are explained, and the parts not explained can be referred to the relevant descriptions of the foregoing embodiments.

[0183] like FIG. 6 As shown, the climbing section P1 forms an acute angle between the bottom surface of battery B and the mounting platform 8. The angle between the bottom surface of battery B and the horizontal plane is 12°.

[0184] like FIG. 6 As shown, the flue gas emission channel P includes a climbing section P1, and the end of the climbing section P1 ( FIG. 6 The height of the middle right end is higher than that of the starting end. FIG. 6The height of the middle left end). The climbing section P1 is configured to allow the flue gas inside to flow upward at an angle relative to the horizontal direction. The climbing section P1 is located inside the housing 1 and above the battery cell 20, from one of the opposite ends of the battery B ( FIG. 6 (middle left end) extends to the other end ( FIG. 6 (middle right end).

[0185] The climbing section P1 and the thermal management component 3 are located at opposite ends of the battery cell 20. In this embodiment, the thermal management component 3 is located at the bottom of the battery pack 2. A partition plate 4 is provided at the top of the battery pack 2, and the partition plate 4 is spaced apart from the top wall of the housing 1. The space formed by the partition plate 4 and the upper part of the housing 1 constitutes a gas collection chamber, which is also the flue gas emission channel P and its climbing section P1.

[0186] like FIG. 7 As shown, the second pressure relief mechanism 1A is installed on the housing 1. FIG. 8 The middle part is located above the right side wall of the housing 1. The second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, through which the flue gas is discharged from the battery system.

[0187] In this embodiment, the first pressure relief mechanism 20A of each battery cell 20 is disposed on the top of the cell casing, with the pressure relief port facing the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. The portion of the partition plate 4 opposite to each pressure relief port has an opening to avoid the pressure relief port. Corresponding to FIG. 7 In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces upwards. If a battery cell 20 experiences thermal runaway, the first pressure relief mechanism 20A of that battery cell 20 directly releases the high-temperature, high-pressure gas inside the cell casing into the flue gas emission channel P. After entering the flue gas emission channel P, the high-temperature, high-pressure gas quickly fills the entire flue gas emission channel P. When the pressure inside the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. During the flow of the flue gas in the ascending section P1 of the flue gas emission channel P, the temperature decreases, and the electrolyte mixed in the flue gas condenses and separates better under the action of gravity. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are reduced compared to related technologies.

[0188] FIG. 7 This is a cross-sectional structural schematic diagram of a battery system according to an embodiment of the present disclosure. FIG. 8 yes FIG. 5 The diagram shows a partially enlarged structural schematic of the battery system in the illustrated embodiment. The following only describes... FIG. 7 and FIG. 7 The illustrated embodiments and FIG. 7 The differences between the embodiments shown are explained, and the parts not explained can be referred to the relevant descriptions of the foregoing embodiments.

[0189] like FIG. 7 As shown, the climbing section P1 forms an acute angle between the bottom surface of battery B and the mounting platform 8. The angle between the bottom surface of battery B and the horizontal plane is 10°.

[0190] like FIG. 7 As shown, the flue gas emission channel P includes two climbing sections P1. One climbing section P1 (hereinafter referred to as the bottom climbing section) is located below the battery cells 20 of the battery pack 2, and the end of the bottom climbing section ( FIG. 7 The height of the middle right end is higher than that of the starting end. FIG. 7 The height of the middle left end). Another climbing section P1 (hereinafter referred to as the side climbing section) is located on the side of the battery cell 20 of the battery pack 2 (the height of the middle left end). FIG. 7 (Right side), the end of the side climbing section ( FIG. 7 The height of the middle right side is higher than the starting end. FIG. 7 The height is at the lower right end of the middle section. The bottom climbing section starts from one end of the opposite ends of battery B (the lower right end). FIG. 7 (middle left end) extends to the other end ( FIG. 8 (Right end). Both the bottom climbing section P1 and the side climbing section are configured to allow the flue gas within them to flow upwards at an angle relative to the horizontal direction. Both the bottom climbing section and the side climbing section are located inside the housing 1.

[0191] like FIG. 7 As shown, the second pressure relief mechanism 1A is installed on the housing 1. FIG. 8 The middle part is located in the middle of the right side wall of the housing 1. The second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, and the flue gas is discharged from the battery system through the second pressure relief mechanism 1A.

[0192] like FIG. 7 As shown, a thermal management component 3 is disposed below the battery pack 2 and spaced apart from the bottom wall of the housing 1. In this embodiment, the bottom climbing section is located on the side of the thermal management component 3 away from the battery cell 20 and between the thermal management component 3 and the housing 1. The space enclosed by the thermal management component 3 and the housing 1 constitutes a gas collection chamber, which is also part of the flue gas emission channel P and its bottom climbing section.

[0193] The side climbing section is located on the right side of the housing 1, and the starting end of the side climbing section is connected to the ending end of the bottom climbing section.

[0194] like FIG. 8 and FIG. 9 As shown, battery B includes nozzle 5, which is configured to inject a heat exchange medium into the flue gas emission channel P. FIG. 10 and FIG. 9 In the embodiment shown, nozzle 5 is located near the right end of the gas collection chamber and is configured to spray heat exchange medium into the bottom climbing section.

[0195] In this embodiment, the first heat exchange medium W1, such as water, is introduced into the internal flow channel of the heat management component 3, and the second heat exchange medium W2, such as water, is introduced into the pipe connected to the nozzle 5. The first heat exchange medium W1 and the second heat exchange medium W2 are controlled independently of each other.

[0196] In this embodiment, the first pressure relief mechanism 20A of each battery cell 20 is disposed at the bottom of the cell casing, with the pressure relief port facing the bottom ascending section of the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. The plate portion of the thermal management component 3 opposite to each pressure relief port has an opening to avoid the pressure relief port. Corresponding to FIG. 9 and FIG. 10 In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces downwards. If a battery cell 20 experiences thermal runaway, the first pressure relief mechanism 20A of that battery cell 20 directly releases the high-temperature, high-pressure gas inside the cell casing into the bottom climbing section. After entering the bottom climbing section, the high-temperature, high-pressure gas quickly fills the entire flue gas emission channel P. When the pressure inside the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. During the flow of the flue gas in the bottom and side climbing sections of the flue gas emission channel P, the temperature decreases due to the reduced pressure, the cooling effect of the thermal management component 3, and the increased potential energy. The electrolyte mixed in the flue gas condenses and is better separated under the action of gravity. Since the flue gas emission channel includes a side climbing section, the flue gas temperature can be reduced more effectively, separating the electrolyte. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are further reduced. In addition, as needed, a second heat exchange medium W2 can be injected into the flue gas emission channel P through nozzle 5 to further reduce the flue gas temperature and separate more electrolyte from the flue gas, thereby reducing the safety hazards of the flue gas.

[0197] FIG. 5 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure; FIG. 7 yes FIG. 9 The illustrated embodiment is a schematic diagram of the exhaust path of the flue gas emission channel including the baffle plate. The following only describes the exhaust path. FIG. 9 and FIG. 9 The illustrated embodiments and FIG. 9 The differences between the embodiments shown are explained, and the parts not explained can be referred to the relevant descriptions of the foregoing embodiments.

[0198] like FIG. 9 As shown, the climbing section P1 forms an acute angle between the bottom surface of battery B and the mounting platform 8. The angle between the bottom surface of battery B and the horizontal plane is 5°.

[0199] like FIG. 9As shown, the flue gas emission channel P includes a climbing section P1 and two descending sections P2.

[0200] In this embodiment, a partition plate 4 is provided below the battery pack 2, which is separated from the bottom wall of the housing 1. The partition plate 4 and the lower wall of the housing 1 form a gas collection chamber.

[0201] Battery B also includes a layered plate 6 and multiple baffles 7. Both the layered plate 6 and the baffles 7 are located within the gas collection chamber. The layered plate 6 is configured to layer the flue gas emission channel P vertically, forming multiple baffle channels. The baffles 7 are disposed within the flue gas emission channel P and are configured to layer the flue gas emission channel P horizontally, forming multiple baffle channels.

[0202] like FIG. 9 As shown, the layered plate 6 is disposed inside the gas collection chamber. Three ends of the layered plate are airtightly connected to the side wall of the housing 1, and one end is spaced apart from the side wall of the housing 1. In this embodiment, the layered plate 6 is parallel and spaced apart from the bottom wall and the partition plate 4 of the housing 1. The three ends of the layered plate 6 that are airtightly connected to the side wall of the housing 1 are respectively... FIG. 9 The front, rear, and right ends shown are spaced apart from the side walls of housing 1. FIG. 9 As shown on the right side. The layered plate 6 divides the gas collection chamber into two layers of flue gas emission channels. The part of the flue gas emission channel P in the upper layer forms a descending section P2 (hereinafter referred to as the upper descending section). The part of the flue gas emission channel on the right side that connects the upper and lower flue gas emission channels forms a descending section P2 (hereinafter referred to as the side descending section). The flue gas emission section in the lower layer forms a climbing section P1.

[0203] The climbing section P1 is located inside the housing 1, below the battery cells 20 of the battery pack 2, and the end of the climbing section P1 ( FIG. 9 The height of the middle right end is higher than that of the starting end. FIG. 9 The height of the middle left end). This climbing section P1 starts from one end of the opposite ends of battery B (the middle left end). FIG. 10 (middle left end) extends to the other end ( FIG. 10 The right-middle section is configured to allow the flue gas inside to flow upwards at an angle relative to the horizontal direction.

[0204] like FIG. 9 As shown, the second pressure relief mechanism 1A is installed on the housing 1. FIG. 10 The middle part is located on the lower part of the right side wall of the housing 1. The second pressure relief mechanism 1A is located at the end of the flue gas emission channel P, and the flue gas is discharged from the battery system through the second pressure relief mechanism 1A.

[0205] like FIG. 11As shown, multiple baffles 7 are arranged in parallel at intervals within the climbing section P1, configured to cause the gas in the flue gas emission channel P to reciprocate in a direction parallel to the bottom surface of the housing 1. FIG. 11 and FIG. 9 As shown, the baffles 7 of the two installation methods are arranged alternately. The first type of baffle 7 is airtightly connected to the rear side wall, bottom wall, and partition plate 4 of the housing 1, while being spaced apart from the front side wall of the housing 1. The second type of baffle 7 is airtightly connected to the front side wall, bottom wall, and partition plate 4 of the housing 1, while being spaced apart from the rear side wall of the housing 1. Thus, multiple baffles 7 cause the gas entering the climbing section P1 to flow along... FIG. 10 The flow path shown flows from the starting end to the ending end and rises, eventually being discharged from the battery system through the pressure relief port of the second pressure relief mechanism 1A.

[0206] In this embodiment, the first pressure relief mechanism 20A of each battery cell 20 is disposed at the bottom of the cell casing, with the pressure relief port facing the upper descending section of the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. The portion of the partition plate 4 opposite to each pressure relief port has an opening to avoid obstructing the pressure relief ports. Corresponding to... FIG. 11 and FIG. 11 In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces downwards. If a battery cell 20 experiences thermal runaway, its first pressure relief mechanism 20A directly releases the high-temperature, high-pressure gas from its casing into the upper descending section. After entering the upper descending section, the high-temperature, high-pressure gas rapidly fills the entire flue gas emission channel P. When the pressure within the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. The flue gas flows sequentially through the upper descending section, the side descending section, and the ascending section P1 in the flue gas emission channel P. As the flue gas flows through the two descending sections P2, its temperature decreases due to expansion in the larger space and contact with the partition plate 4, the housing 1, and the layered plate 6. Partial condensation and separation of the electrolyte occur. During the process of the flue gas entering the ascending section from the upper descending section, the electrolyte undergoes initial separation due to the change in direction and the combined effects of centrifugal force and gravity. Upon entering the ascending section P1, the flue gas temperature further decreases as it gradually ascends along the baffled flow channels within P1. More of the electrolyte mixed within the flue gas condenses and separates better under the influence of gravity and the centrifugal force from the changing direction. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are further reduced.

[0207] FIG. 11 This is a schematic diagram illustrating the principle structure of a battery system according to an embodiment of this disclosure. The following only describes... FIG. 11 The illustrated embodiments and FIG. 12 and FIG. 2 The differences between the embodiments shown are explained, and the parts not explained can be referred to the relevant descriptions of the foregoing embodiments.

[0208] like FIG. 12 As shown, multiple baffles 7 are configured to cause the gas in the flue gas emission channel P to reciprocate in a direction perpendicular to the bottom surface of the housing 1. FIG. 12 As shown, the baffles 7 of the two installation methods are arranged alternately. The first type of baffle 7 is airtightly connected to the front and rear side walls and bottom wall of the housing 1, and is spaced apart from the partition plate 4. The second type of baffle 7 is airtightly connected to the front and rear side walls and partition plate 4 of the housing 1, and is spaced apart from the bottom side wall of the housing 1. Thus, multiple baffles 7 cause the gas entering the climbing section P1 to flow along... FIG. 12 The flow path shown flows from the starting end to the ending end and rises, eventually being discharged from the battery system through the pressure relief port of the second pressure relief mechanism 1A.

[0209] In this embodiment, the first pressure relief mechanism 20A of each battery cell 20 is disposed at the bottom of the cell casing, with the pressure relief port facing the upper descending section of the flue gas emission channel P to directly discharge gas into the flue gas emission channel P. The portion of the partition plate 4 opposite to each pressure relief port has an opening to avoid obstructing the pressure relief ports. Corresponding to... FIG. 11 In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces downwards. If a battery cell 20 experiences thermal runaway, its first pressure relief mechanism 20A directly releases the high-temperature, high-pressure gas from its casing into the upper descending section. After entering the upper descending section, the high-temperature, high-pressure gas rapidly fills the entire flue gas emission channel P. When the pressure within the flue gas emission channel P exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A. The flue gas flows sequentially through the upper descending section, the side descending section, and the ascending section P1 in the flue gas emission channel P. As the flue gas flows through the two descending sections P2, its temperature decreases due to expansion in the larger space and contact with the partition plate 4, the housing 1, and the layered plate 6. Partial condensation and separation of the electrolyte occur. During the process of the flue gas entering the ascending section from the upper descending section, the electrolyte undergoes initial separation due to the change in direction and the combined effects of centrifugal force and gravity. Upon entering the ascending section P1, the flue gas temperature further decreases as it gradually ascends along the baffled flow channels within P1. More of the electrolyte mixed within the flue gas condenses and separates better under the influence of gravity and the centrifugal force from the changing direction. Therefore, the safety hazards of the flue gas discharged from the pressure relief port of the second pressure relief mechanism 1A are further reduced.

[0210] FIG. 11 This is a schematic diagram of the principle structure of a battery system according to an embodiment of the present disclosure.

[0211] In this embodiment, the battery system includes a battery B and a battery mounting section M.

[0212] Battery B includes a housing 1 and a battery pack 2 disposed within the housing 1. The battery pack 2 includes multiple battery cells 20 arranged side-by-side.FIG. 12 The battery cell 20 includes a cell housing consisting of a casing 25 and an end cap 211, a cell located inside the cell housing, and a first pressure relief mechanism 20A disposed on the cell housing. The cell includes two electrode assemblies 24.

[0213] The battery mounting section M includes a mounting platform 8 and a mounting section flue wall 9.

[0214] Battery B is mounted on mounting platform 8. The upper surface of mounting platform 8 is horizontal. The bottom surface of battery B is also horizontal. FIG. 12 As shown, the bottom surface of the housing 1 is directly connected to the upper surface of the mounting platform 8. Similar to the previous embodiment, the battery B can be connected and fixed to the mounting platform 8 by means of threaded connectors, snap-fit, riveting, welding, etc.

[0215] like FIG. 12 As shown, the battery system includes a flue gas emission channel P, which is configured to discharge gas from the cell housing emitted by the first pressure relief mechanism 20A into the battery system via the flue gas emission channel P.

[0216] like FIG. 12 As shown, the flue gas emission channel P includes a climbing section P1, and the end of the climbing section P1 ( FIG. 12 The height of the middle right end is higher than that of the starting end. FIG. 12 The height of the middle left end). The climbing section P1 is configured such that the flue gas within it flows upward at an angle relative to the horizontal direction. In this embodiment, the climbing section P1 is formed by the battery B and the battery mounting component M of the battery system.

[0217] like FIG. 12 As shown, battery B includes a second pressure relief mechanism 1A, which is mounted on the housing 1. FIG. 12 The second pressure relief mechanism 1A is located above the right side wall of the housing 1. It is located upstream of the end of the flue gas emission channel P. Downstream of the second pressure relief mechanism 1A, i.e., outside the housing 1, a portion of the flue gas emission channel P is also located.

[0218] like FIG. 12As shown, the flue wall 9 of the mounting section includes a first wall portion 91, which is parallel to and spaced apart from the right side wall of the housing 1 of the battery B, which is equipped with a second pressure relief mechanism 1A; a second wall portion 92, which is connected to the upper part of the left side wall of the housing 1 and is flush with the left side wall; a third wall portion 93, which is connected to the top of the first wall portion 91 and the second wall portion; a fourth wall portion, which is parallel to and spaced apart from the top wall of the housing 1; and two fifth wall portions 95, which are airtightly connected to the front and rear ends of the first wall portion 91, the second wall portion 92, the third wall portion 93 and the fourth wall portion 94, respectively. The fourth wall portion 94 is located between the top wall of the housing 1 and the third wall portion 93, and is spaced apart from the third wall portion 93. The right end of the fourth wall portion 94 is airtightly connected to the first wall portion 91, and there is a gap between the fourth wall portion 94 and the second wall portion 92.

[0219] like FIG. 12 As shown in the present embodiment, a portion of the flue gas emission channel is located inside the housing 1, and another portion of the flue gas emission channel is located outside the housing 1.

[0220] The flue gas emission channel located inside the housing 1 is a horizontal section P3, hereinafter referred to as the internal horizontal section. The internal horizontal section is located above the battery cell 20, starting from one of the opposite ends of battery B ( FIG. 12 (middle left end) extends to the other end ( FIG. 12 (middle right end).

[0221] The flue gas emission channel located outside the housing 1 includes, in the direction of gas flow, a climbing section P1 (hereinafter referred to as the right climbing section) located between the housing 1 and the first wall 91, a horizontal section P3 (hereinafter referred to as the outer horizontal section) located between the top wall of the housing 1 and the fourth wall 94, a climbing section P1 (hereinafter referred to as the left climbing section) located in the interval between the fourth wall 94 and the second wall 92, and a climbing section P1 (hereinafter referred to as the upper climbing section) located between the third wall 93 and the fourth wall 94. The outer horizontal section is located above the battery cell 20, starting from one of the opposite ends of the battery B ( FIG. 12 (middle right end) extends to the other end ( FIG. 12 (Middle left end). The upper climbing section is formed by the flue wall 9 of the mounting section, located above the battery cell 20, from one of the opposite ends of the battery B ( FIG. 12 (middle left end) extends to the other end ( FIG. 12 (middle right end).

[0222] like FIG. 12 As shown, the upper climbing section includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction. The fourth wall portion 94 forming the bottom wall of the upper climbing section is horizontal, and the third wall portion 93 forming the top wall of the upper climbing section is inclined relative to the horizontal plane with an angle of 15° between it and the horizontal plane.

[0223] like FIG. 12As shown, the battery mounting section M includes a third pressure relief mechanism 9A, which is located on the upper part of the first wall portion 91 of the flue wall 9 of the mounting section and at the end of the flue gas emission channel P.

[0224] In this embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces the inner horizontal section of the flue gas emission channel P, so as to directly discharge gas into the flue gas emission channel P. Corresponding to FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. 12 FIG. In the illustrated embodiment, the pressure relief port of the first pressure relief mechanism 20A of each battery cell 20 faces upward. If a battery cell 20 experiences thermal runaway, the first pressure relief mechanism 20A of that battery cell 20 directly releases the high-temperature, high-pressure gas from its casing into the internal horizontal section of the flue gas emission channel P. After the high-temperature, high-pressure gas enters the internal horizontal section of the flue gas emission channel P, it rapidly fills the entire internal horizontal section. When the pressure within the internal horizontal section exceeds the working pressure of the second pressure relief mechanism 1A, the flue gas is discharged from the pressure relief port of the second pressure relief mechanism 1A and enters and fills the external flue gas emission channel P of the housing 1. When the flue gas pressure in the external flue gas emission channel P of the housing 1 reaches the working pressure of the third pressure relief mechanism 9A, the flue gas in the external flue gas emission channel P of the housing 1 flows along the right-side climbing section, the external horizontal section, the left-side climbing section, and the upper climbing section until it exits the battery system from the pressure relief port of the third pressure relief mechanism 9A. In this embodiment, the flue gas is first depressurized and cooled in the internal horizontal section, and part of the electrolyte is separated from the flue gas. After the flue gas leaves the box 1 and enters the flue gas emission channel P outside the box 1, it is further depressurized and cooled due to the expansion of space and the increase of potential energy. The electrolyte is more fully condensed and separated more fully under the action of gravity and centrifugal force generated by the change of flue gas direction. The flue gas discharged from the pressure relief port of the third pressure relief mechanism 9A has reduced safety hazards compared with related technologies.

[0225] While this disclosure has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this disclosure. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery system comprising a battery (B), the battery (B) comprising a housing (1) and a battery cell (20) disposed within the housing (1), the battery cell (20) comprising a cell casing, a cell located within the cell casing, and a first pressure relief mechanism (20A) disposed on the cell casing; wherein, The battery system includes a flue gas exhaust channel (P) configured to discharge gas from the cell housing emitted from the first pressure relief mechanism (20A) into the battery system via the flue gas exhaust channel (P); The flue gas emission channel (P) includes one or more ramp sections (P1), the height of the terminating end of the ramp section (P1) being higher than the height of the starting end, and at least one of the ramp sections (P1) extending from one end of opposite ends of the battery (B) to the other end and configured to allow the flue gas within it to flow upward at an angle relative to the horizontal direction.

2. The battery system according to claim 1, wherein, At least one of the climbing sections (P1) is located inside the housing (1); and / or At least one of the climbing sections (P1) is located outside the housing (1).

3. The battery system according to claim 1, wherein, At least two of the plurality of climbing sections (P1) have the same angle with the horizontal plane; and / or At least two of the plurality of climbing sections (P1) have different angles to the horizontal plane.

4. The battery system according to claim 1, wherein, At least two of the plurality of climbing sections (P1) are arranged adjacent to each other; and / or At least two of the plurality of climbing sections (P1) are spaced apart.

5. The battery system according to claim 1, wherein, At least one of the climbing sections (P1) is formed by the housing (1) and a battery pack (2) comprising a plurality of the battery cells (20).

6. The battery system according to claim 1, wherein, The battery (B) includes a thermal management component (3) disposed within the housing (1), and at least a portion of the flue gas emission channel (P) is formed by the thermal management component (3) and the housing (1).

7. The battery system according to claim 1, wherein, The battery (B) includes a thermal management component (3) disposed within the housing (1), wherein At least one of the climbing sections (P1) is located on the side of the thermal management component (3) away from the battery cell (20) and between the thermal management component (3) and the housing (1); or At least one of the climbing section (P1) and the thermal management component (3) are located at opposite ends of the battery cell (20).

8. The battery system according to claim 6, wherein, The thermal management component (3) is located below the battery cell (20), and at least one of the climbing sections (P1) is located below the thermal management component (3).

9. The battery system according to claim 1, wherein, The battery (B) includes a nozzle (5) configured to inject a heat exchange medium into the flue gas emission channel (P).

10. The battery system according to claim 9, wherein, The nozzle (5) is configured to spray heat exchange medium into at least one of the climbing sections (P1).

11. The battery system according to claim 1, wherein, At least one of the climbing sections (P1) is located above the battery cell (20); and / or At least one of the climbing sections (P1) is located below the battery cell (20).

12. The battery system according to claim 1, wherein, The battery (B) includes a second pressure relief mechanism (1A), which is disposed on the housing (1) and is located upstream or at the end of the flue gas emission channel (P).

13. The battery system according to claim 1, wherein, The battery system includes: At least one layered plate (6), said layered plate (6) being configured to layer the flue gas emission channel (P) in the vertical direction and form a multi-layered baffle channel; and / or At least one baffle plate (7) is disposed in the flue gas emission channel (P) and configured to layer the flue gas emission channel (P) in the horizontal direction and form a multi-layer baffle channel.

14. The battery system according to claim 13, wherein, At least a portion of the baffles (7) are disposed within the climbing section (P1).

15. The battery system according to claim 13, wherein, At least a portion of the baffles (7) are configured to cause the gas in the flue gas discharge passage (P) to reciprocate in a direction parallel to the bottom surface of the housing (1); and / or At least part of the baffle (7) is configured to cause the gas in the flue gas discharge passage (P) to reciprocate in a direction perpendicular to the bottom surface of the housing (1).

16. The battery system according to any one of claims 1 to 15, wherein, At least one of the climbing sections (P1) includes a flow-expanding channel with a gradually increasing flow area along the flue gas flow direction.

17. The battery system according to any one of claims 1 to 15, wherein, At least one of the climbing sections (P1) includes at least one wall surface with an angle of 5° to 60° to the horizontal plane.

18. The battery system according to any one of claims 1 to 15, wherein, The battery system includes a battery mounting section (M), which includes a mounting platform (8), on which the battery (B) is mounted.

19. The battery system according to claim 18, wherein, The bottom surface of the battery (B) is inclined relative to the horizontal plane on the mounting platform (8).

20. The battery system according to claim 19, wherein, The angle between the bottom surface of the battery (B) and the horizontal plane is 5° to 60°.

21. The battery system according to claim 18, wherein, The battery mounting section (M) includes a mounting section flue wall (9) disposed on the mounting platform (8), and at least one of the climbing sections (P1) is formed by the mounting section flue wall (9) or by the mounting section flue wall (9) and the housing (1).

22. The battery system according to claim 21, wherein, The battery mounting section (M) includes a third pressure relief mechanism (9A), which is disposed on the flue wall (9) of the mounting section and located at the end of the flue gas emission channel (P).

23. The battery system according to any one of claims 1 to 15, wherein, The pressure relief port of the first pressure relief mechanism (20A) faces the flue gas emission channel (P) to directly discharge gas into the flue gas emission channel (P).

24. The battery system according to any one of claims 1 to 15, wherein, The battery system is either a power battery system or a battery energy storage system.

25. An electrical appliance, characterized in that, The battery system includes any one of claims 1 to 24, the battery system being used to supply power to the electrical equipment.

26. An energy storage device, characterized in that, The energy storage device includes a battery system according to any one of claims 1 to 24, wherein the energy storage device uses the battery (B) of the battery system as an energy storage carrier.

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