Battery and electrical apparatus

Abstract

A battery (100) and an electrical apparatus. The battery (100) comprises battery cells (20), a casing (10), and an adsorption device (30). A pressure relief mechanism (40) is provided on the casing (10), a second connecting part (302) is provided at an inlet end (301) of the adsorption device (30), and the second connecting part (302) is connected to the pressure relief mechanism (40) or the casing (10), so that the inlet end (301) is in communication with the pressure relief mechanism (40); in the event of thermal runaway, a combustible flue gas discharged from the pressure relief mechanism (40) can be directed into the adsorption device (30), and the adsorption device (30) is used to adsorb electrolyte vapor in the combustible flue gas, so that the electrolyte vapor is separated from the combustible flue gas, thereby effectively reducing the probability of combustion and explosion of the combustible flue gas.

Description

Batteries and electrical equipment

[0001] This application refers to Chinese patent application No. 202420625612.9, entitled “Batteries and Electrical Equipment,” filed on March 29, 2024, which is incorporated herein by reference in its entirety. Technical Field

[0002] The present application relates to the technical field of battery structures, and in particular provides a battery and an electrical device. Background Art

[0003] The combustible fumes emitted from batteries are typically divided into two parts: one is combustible gas with a risk of explosion, and the other is electrolyte vapor. The combustible fumes formed by the mixture of electrolyte vapor and combustible gas are more likely to explode if they encounter an environment with high oxygen content.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide a battery and an electrical device, aiming to solve the problem that the combustible flue gas discharged from the battery has a high probability of combustion and explosion due to the presence of electrolyte vapor.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are:

[0007] In the first aspect, an embodiment of the present application provides a battery, including a battery cell, a box body and an adsorption device, wherein a accommodating cavity is formed inside the box body, and the battery cell is accommodated in the accommodating cavity, and a pressure relief mechanism is provided on the box body; the adsorption device is used to adsorb electrolyte vapor, and an inlet end is formed on the adsorption device, and a second connecting portion is provided at the inlet end, and the second connecting portion is connected to the pressure relief mechanism or the box body to connect the inlet end to the pressure relief mechanism.

[0008] Beneficial effects of the embodiments of the present application: The battery provided in the embodiments of the present application, by arranging an adsorption device on the casing, and connecting the inlet end of the adsorption device to the pressure relief mechanism or the casing through the second connection portion, so that the inlet end can be connected to the pressure relief mechanism, so that in the event of thermal runaway, the combustible flue gas discharged from the pressure relief mechanism can be introduced into the adsorption device, and the adsorption device is used to adsorb the electrolyte vapor in the combustible flue gas, so that the electrolyte vapor is separated from the combustible flue gas, which can effectively reduce the probability of combustion and explosion of the combustible flue gas.

[0009] In some embodiments, the pressure relief mechanism is provided with a first connection portion, and the first connection portion is connected to the second connection portion.

[0010] By adopting the above technical solution, the inlet end can be connected to the first connection part of the pressure relief mechanism through the second connection part, so that the inlet end is directly connected to the pressure relief mechanism, and the combustible flue gas discharged from the pressure relief mechanism can enter the adsorption device more fully.

[0011] In some embodiments, a third connecting portion is provided on the box body, and the third connecting portion is connected to the second connecting portion.

[0012] By adopting the above technical solution, the inlet end can be connected to the third connection part of the box body through the second connection part, so that the inlet end cover is arranged on the pressure relief mechanism, thereby, the combustible smoke discharged from the pressure relief mechanism can enter the adsorption device more fully.

[0013] In some embodiments, the battery further includes an air line, one end of the air line is connected to the pressure relief mechanism, and the other end of the air line is connected to the second connection portion and connected to the inlet end.

[0014] By adopting the above-mentioned technical solution, the inlet end of the adsorption device can be connected to the pressure relief mechanism through the gas pipeline, so that the combustible flue gas discharged from the pressure relief mechanism can enter the interior of the adsorption device through the gas pipeline, and the electrolyte vapor in the combustible flue gas can be adsorbed by the adsorption device to reduce the probability of combustion and explosion of the discharged combustible flue gas.

[0015] In some embodiments, a first connection portion is provided on the pressure relief mechanism, a second connection portion is provided at the inlet end, and a fourth connection portion and a fifth connection portion are respectively provided at the opposite ends of the air guide line, the fourth connection portion is connected to the first connection portion, and the fifth connection portion is connected to the second connection portion.

[0016] By adopting the above technical solution, one end of the air guide line is connected to the first connection part of the pressure relief mechanism through the fourth connection part, and the other end of the air guide line is connected to the second connection part of the inlet end through the fifth connection part, thereby realizing the assembly connection between the air guide line and the pressure relief mechanism and the inlet end respectively.

[0017] In some embodiments, an outlet port is formed on the adsorption device, and the battery further includes a gas collection line connected to the outlet port.

[0018] By adopting the above technical solution, by connecting a gas collection pipeline to the outlet end of the adsorption device and using the gas collection pipeline to collect the combustible flue gas after the electrolyte vapor is separated, the probability of combustible flue gas causing combustion and explosion due to discharge into the air can be further reduced.

[0019] In some embodiments, a sixth connection portion is provided at the outlet end, a seventh connection portion is provided on the gas collecting pipeline, and the sixth connection portion is connected to the seventh connection portion.

[0020] By adopting the above-mentioned technical solution, the gas collection pipeline can be connected to the sixth connection part at the outlet end through the seventh connection part, so that the discharged combustible flue gas is adsorbed and separated from the electrolyte vapor by the adsorption device, and then enters the gas collection pipeline for collection for subsequent processing.

[0021] In some embodiments, the adsorption device includes an adsorption structure, an adsorption cavity for accommodating an adsorption material is formed inside the adsorption structure, and a first through hole for introducing combustible smoke and a second through hole for discharging combustible smoke are provided on the adsorption structure.

[0022] By adopting the above-mentioned technical solution, the combustible flue gas discharged from the pressure relief mechanism can be introduced into the adsorption chamber through the first through hole, so that the adsorption material in the adsorption chamber can adsorb and separate the electrolyte vapor from the passing combustible flue gas, and the combustible flue gas after the electrolyte vapor is separated can be discharged from the second through hole.

[0023] In some embodiments, the adsorption material member includes at least one of a resin structure member, a fiber structure member, an activated carbon structure member, a silicone grease structure member, and a diatomaceous earth structure member.

[0024] By adopting the above technical solution, at least one of the resin structural parts, fiber structural parts, activated carbon structural parts, silicone grease structural parts, and diatomaceous earth structural parts can be used to adsorb electrolyte vapor in combustible flue gas, thereby reducing the probability of combustion and explosion of combustible flue gas.

[0025] In a second aspect, an embodiment of the present application further provides an electrical device, comprising a battery as described above, the battery being used to provide electrical energy.

[0026] Beneficial effects of the embodiments of the present application: The electrical equipment provided in the embodiments of the present application includes the above-mentioned battery. Since an adsorption device is provided on the outside of the battery box, and the adsorption device can adsorb electrolyte vapor from the combustible flue gas discharged by the pressure relief mechanism, the combustible flue gas discharged by the electrical equipment including the battery can also adsorb electrolyte vapor, and the probability of combustion and explosion of the combustible flue gas is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0029] FIG2 is an exploded view of a battery provided in some embodiments of the present application;

[0030] FIG3 is a schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application;

[0031] FIG4 is a schematic diagram of a battery including an adsorption device provided in some embodiments of the present application;

[0032] FIG5 is a connection diagram of an adsorption device provided in some embodiments of the present application;

[0033] FIG6 is a schematic diagram of another battery including an adsorption device provided in some embodiments of the present application;

[0034] FIG7 is a connection diagram of another adsorption device provided in some embodiments of the present application;

[0035] FIG8 is a cross-sectional view of an adsorption device provided in some embodiments of the present application.

[0036] Among them, the figure marks in the figure are: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, box; 101, accommodating chamber; 11, first part; 12, second part; 20, battery cell; 21, end cover; 211, electrode terminal; 22, shell; 23, electrode assembly; 231, pole ear; 30, adsorption device; 301, inlet end; 302, second connection part; 303, outlet end; 304, sixth connection part; 31, adsorption structure; 311, adsorption chamber; 312, first through hole; 313, second through hole; 32, adsorption material piece; 40, pressure relief mechanism; 41, first connection part; 50, gas guide line; 60, gas collecting line. DETAILED DESCRIPTION

[0037] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0038] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0040] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0041] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0042] During use, battery cells may experience thermal runaway, generating combustible fumes carrying a large amount of heat. To prevent these combustible fumes from accumulating inside the battery housing, a pressure relief mechanism is typically installed to discharge the combustible fumes outside the housing. The combustible fumes discharged from the battery are typically divided into two parts: one is combustible gas with a risk of combustion and explosion, and the other is electrolyte vapor. The combustible fumes formed by the mixture of electrolyte vapor and combustible gas are more likely to explode if they encounter an environment with a high oxygen content.

[0043] Based on the above considerations, in order to solve the problem that the combustible flue gas discharged from the battery contains electrolyte vapor, resulting in a high probability of combustion and explosion of the combustible flue gas, a battery is designed. By arranging an adsorption device on the outside of the battery box and connecting the pressure relief mechanism to the adsorption device, the combustible flue gas discharged from the pressure relief mechanism can be introduced into the adsorption device. After the electrolyte vapor in the combustible flue gas is separated and adsorbed by the adsorption device, the probability of combustion and explosion of the combustible flue gas can be effectively reduced.

[0044] The battery cells disclosed in the embodiments of the present application can be used in electrical devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements. Electrical devices may include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, and the like. Electric toys may include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0045] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0046] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0047] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0048] Please refer to Figure 2, which is an exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a storage space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cell 20. The second portion 12 can be a hollow structure with one end open. The first portion 11 can be a plate-like structure, with the first portion 11 overlapping the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. Alternatively, the first portion 11 and the second portion 12 can each be a hollow structure with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0049] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection and housed as a whole within the housing 10. Of course, the battery 100 may also be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a whole and housed within the housing 10. The battery 100 may also include other structures, such as a busbar component for electrically connecting the multiple battery cells 20.

[0050] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0051] Please refer to Figure 3, which is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of the present application. A battery cell 20 is the smallest unit that makes up a battery. As shown in Figure 3, a battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0052] The end cap 21 is a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This prevents the end cap 21 from deforming when subjected to compression or collision, giving the battery cell 20 greater structural strength and improved reliability. Functional components such as electrode terminals 211 can be provided on the end cap 21. The electrode terminals 211 can be used to electrically connect to the electrode assembly 23 for inputting or outputting electrical energy from the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief device for relieving internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The end cap 21 can also be made of a variety of materials, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating member may be provided inside the end cap 21 to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0053] The housing 22 is a component that cooperates with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can be used to accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and end cap 21 can be separate components. An opening can be provided in the housing 22, and the end cap 21 is placed over the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and housing 22 can be integrated. Specifically, the end cap 21 and housing 22 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 22 needs to be enclosed, the end cap 21 is placed over the housing 22. The housing 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the housing 22 can be determined based on the specific shape and size of the electrode assembly 23. The housing 22 can be made of a variety of materials, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0054] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be contained in the housing 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab 231. The positive and negative electrode tabs may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tab 231 connects to the electrode terminal 211 to form a current loop.

[0055] According to some embodiments of the present application, please refer to Figures 2 to 4 and Figure 8. The embodiments of the present application provide a battery 100, including a battery cell 20, a box body 10 and an adsorption device 30. The box body 10 has a receiving cavity 101 formed therein, and the battery cell 20 is accommodated in the receiving cavity 101. The box body 10 is provided with a pressure relief mechanism 40; the adsorption device 30 is used to adsorb electrolyte vapor, and an inlet end 301 is formed on the adsorption device 30. A second connecting portion 302 is provided at the inlet end 301, and the second connecting portion 302 is connected to the pressure relief mechanism 40 or the box body 10 so that the inlet end 301 is connected to the pressure relief mechanism 40.

[0056] The pressure relief mechanism 40 is used to release the internal pressure when the internal pressure or temperature of the box body 10 reaches a threshold value; optionally, the pressure relief mechanism 40 can be, but is not limited to, a valve structure such as a pressure relief valve and an explosion-proof valve.

[0057] The adsorption device 30 is used to adsorb electrolyte vapor; it should be understood that the interior of the adsorption device 30 has an adsorption material (such as anionic and cationic resins, fibers, activated carbon, silicone grease, diatomaceous earth, etc.) that can adsorb electrolyte vapor. Therefore, when combustible flue gas is introduced into the adsorption device 30, the adsorption device 30 can perform an adsorption operation on the combustible flue gas and separate the electrolyte vapor in the combustible flue gas.

[0058] The adsorption device 30 may be, but is not limited to, a bottle structure, a box structure, a can structure, a tube structure, or other structures having a cavity, whereby the adsorption device 30 can accommodate adsorption materials for adsorbing electrolyte vapor and can flow through combustible flue gas.

[0059] Optionally, the number of adsorption devices 30 can be one or any number of more than one; illustratively, when the number of adsorption devices 30 is one, the adsorption device 30 can be connected to the pressure relief mechanism 40; when the number of adsorption devices 30 is multiple, for example, two, the two adsorption devices 30 can be connected in sequence, and then the two connected adsorption devices 30 are connected to the pressure relief mechanism 40; or, when the number of adsorption devices 30 is multiple, for example, two, the two adsorption devices 30 can be connected to the pressure relief mechanism 40 respectively, so that the combustible flue gas discharged from the pressure relief mechanism 40 can enter the two adsorption devices 30 at the same time, and the electrolyte vapor adsorption operation can be performed in the two adsorption devices 30 at the same time.

[0060] The inlet end 301 of the adsorption device 30 is used to introduce the combustible flue gas so that the combustible flue gas can adsorb the electrolyte vapor inside the adsorption device 30 .

[0061] Optionally, the inlet end 301 may be an opening provided on the adsorption device 30 , or a hollow tube structure provided on the adsorption device 30 , as long as the inlet end 301 can introduce the combustible flue gas from the outside into the interior of the adsorption device 30 .

[0062] The second connection portion 302 is a connection structure provided at the inlet end 301 ; optionally, the second connection portion 302 includes but is not limited to a threaded structure, a snap-fit ​​structure, a clamping structure, and other connection structures.

[0063] The inlet end 301 can be connected to the pressure relief mechanism 40 by using the second connection part 302, for example, the second connection part 302 is connected to the pressure relief mechanism 40 by screwing, welding, bonding, clamping, etc., so that the inlet end 301 and the pressure relief mechanism 40 are connected; or, the inlet end 301 can be connected to the box body 10 by using the second connection part 302, for example, the second connection part 302 is connected to the box body 10 by screwing, welding, bonding, clamping, etc., so that the inlet end 301 is covered by the pressure relief mechanism 40, and the combustible smoke discharged from the pressure relief mechanism 40 can be introduced into the adsorption device 30.

[0064] The battery 100 provided in the embodiment of the present application is provided with an adsorption device 30 on the housing 10, and the inlet end 301 of the adsorption device 30 is connected to the pressure relief mechanism 40 or the housing 10 via the second connection portion 302, so that the inlet end 301 can be connected to the pressure relief mechanism 40. Therefore, in the event of thermal runaway, the combustible flue gas discharged from the pressure relief mechanism 40 can be introduced into the adsorption device 30. The adsorption device 30 is used to adsorb the electrolyte vapor in the combustible flue gas, so that the electrolyte vapor is separated from the combustible flue gas, which can effectively reduce the probability of combustion and explosion of the combustible flue gas.

[0065] Please refer to FIG. 4 , FIG. 5 and FIG. 8 . In some embodiments, the pressure relief mechanism 40 is provided with a first connection portion 41 , and the first connection portion 41 is connected to the second connection portion 302 .

[0066] The first connection portion 41 is a connection structure provided on the pressure relief mechanism 40 , and the first connection portion 41 and the second connection portion 302 can be connected.

[0067] Optionally, the first connection portion 41 can be an external thread formed on the outer surface of the pressure relief mechanism 40, and the second connection portion 302 can be an internal thread formed on the inner wall surface of the inlet end 301, so that the inlet end 301 can be screwed onto the external thread of the pressure relief mechanism 40 through the internal thread.

[0068] Alternatively, the first connection portion 41 can be a hollow threaded column arranged on the outer surface of the pressure relief mechanism 40, and the hollow part of the hollow threaded column can avoid the pressure relief part of the pressure relief mechanism 40 so that the pressure relief mechanism 40 can perform normal pressure relief operation; the second connection portion 302 can be an internal thread formed on the inner wall surface of the inlet end 301, so that the inlet end 301 can be screwed on the hollow threaded column through the internal thread, and the inlet end 301 can be against the surface of the pressure relief mechanism 40 (as shown in Figure 5), so that the combustible smoke discharged from the pressure relief mechanism 40 can directly pass into the inlet end 301 and enter the interior of the adsorption device 30.

[0069] Alternatively, the first connecting portion 41 can be a connecting pipe arranged on the outer surface of the pressure relief mechanism 40, and the pressure relief part of the pressure relief mechanism 40 is located within the tube body of the connecting pipe and faces the hollow part of the connecting pipe; an internal thread is provided on the inner wall surface of the connecting pipe, and the second connecting portion 302 can be an external thread formed on the outer wall surface of the inlet end 301, thereby, the inlet end 301 can be screwed onto the internal thread of the connecting pipe through the external thread, so that the inlet end 301 is connected to the pressure relief mechanism 40.

[0070] Alternatively, the first connecting portion 41 may be a first connecting bracket provided on the outer surface of the pressure relief mechanism 40, with a first mounting hole being provided on the first connecting bracket; the second connecting portion 302 may be a second connecting bracket provided on the outer wall of the inlet end 301, with a second mounting hole being provided on the second connecting bracket; thereby, the first bracket and the second bracket may be in contact with each other so that the inlet end 301 is connected to the pressure relief mechanism 40, and then fasteners (such as bolts, etc.) are passed through the first mounting hole and the second mounting block for fixing, so as to achieve the purpose of connecting the inlet end 301 and the pressure relief mechanism 40.

[0071] With this arrangement, the inlet end 301 can be connected to the first connection portion 41 of the pressure relief mechanism 40 through the second connection portion 302 , so that the inlet end 301 is directly connected to the pressure relief mechanism 40 , and the combustible flue gas discharged from the pressure relief mechanism 40 can more fully enter the adsorption device 30 .

[0072] In some embodiments, a third connecting portion (not shown in the figures) is provided on the box body 10 , and the third connecting portion is connected to the second connecting portion 302 .

[0073] The third connection portion is a connection structure provided on the box body 10 , and the third connection portion and the second connection portion 302 provided at the inlet end 301 can be connected.

[0074] Optionally, the third connection part can be an annular groove structure formed on the box body 10, and an internal thread is formed on the inner wall surface of the annular groove structure, and the pressure relief mechanism 40 is within the range of the annular groove structure; the second connection part 302 can be an external thread formed on the outer wall surface of the inlet end 301, so that the inlet end 301 can be screwed on the internal thread of the annular groove structure through the external thread, so that the inlet end 301 is covered by the pressure relief mechanism 40.

[0075] Alternatively, the third connection portion may be a hollow threaded column arranged on the outer surface of the box body 10, and the pressure relief mechanism 40 is located inside the hollow threaded column; the second connection portion 302 may be an internal thread formed on the inner wall surface of the inlet end 301, whereby the inlet end 301 may be screwed onto the hollow threaded column through the internal thread, so that the inlet end 301 is covered by the pressure relief mechanism 40.

[0076] In this configuration, the inlet end 301 can be connected to the third connection portion of the box body 10 through the second connection portion 302, so that the inlet end 301 is covered by the pressure relief mechanism 40, thereby allowing the combustible flue gas discharged from the pressure relief mechanism 40 to enter the adsorption device 30 more fully.

[0077] 6 to 8 , in some embodiments, the battery 100 further includes an air line 50 , one end of which is connected to the pressure relief mechanism 40 , and the other end of which is connected to the second connection portion 302 and connected to the inlet port 301 .

[0078] The gas guide line 50 is a pipeline structure used to guide the combustible smoke. The gas guide line 50 can adopt a fire-resistant and high-temperature resistant pipeline structure.

[0079] One end of the air guide line 50 is connected to the pressure relief mechanism 40; optionally, the air guide line 50 can be connected to the pressure relief mechanism 40 and conducted by means of threaded connection, fastener connection, snap connection, etc.; or, the air guide line 50 can be connected to the box body 10 by means of threaded connection, fastener connection, snap connection, etc. and the pressure relief mechanism 40 is covered so that the pressure relief mechanism 40 is connected to the air guide line 50.

[0080] The other end of the air guide line 50 is connected to the second connection part 302 and communicated with the inlet end 301; optionally, the air guide line 50 can be connected and communicated with the second connection part 302 by means of threaded connection, fastener connection, clamping, etc.

[0081] For example, in some specific embodiments, external threads are provided on the outer wall surfaces of the opposite ends of the air guide line 50, and the end of the pressure relief mechanism 40 facing away from the box body 10 is provided with a hollow tube body structure with internal threads, and the second connecting portion 302 can be an internal thread provided on the inner wall surface of the inlet end 301; thus, one end of the air guide line 50 can be screwed into the hollow tube body structure of the pressure relief mechanism 40 through the external thread to achieve connection and conduction between the air guide line 50 and the pressure relief mechanism 40, and the other end of the air guide line 50 can be screwed into the inlet end 301 through the external thread to achieve communication between the air guide line 50 and the inlet end 301.

[0082] With such an arrangement, the inlet end 301 of the adsorption device 30 can be connected to the pressure relief mechanism 40 through the gas guide line 50, so that the combustible flue gas discharged from the pressure relief mechanism 40 can enter the interior of the adsorption device 30 through the gas guide line 50, and the electrolyte vapor in the combustible flue gas can be adsorbed by the adsorption device 30 to reduce the probability of combustion and explosion of the discharged combustible flue gas.

[0083] Please refer to Figures 6 to 8. In some embodiments, a first connecting portion 41 is provided on the pressure relief mechanism 40, and a fourth connecting portion (not shown in the figure) and a fifth connecting portion (not shown in the figure) are respectively provided at opposite ends of the air guide line 50. The fourth connecting portion is connected to the first connecting portion 41, and the fifth connecting portion is connected to the second connecting portion 302.

[0084] The fourth connection portion is a connection structure provided at one end of the air guide line 50 , and the fourth connection portion may be connected to the first connection portion 41 .

[0085] Optionally, the first connection portion 41 can be an external thread formed on the outer surface of the pressure relief mechanism 40, and the fourth connection portion can be an internal thread formed on the inner wall surface of the air guide line 50, so that the air guide line 50 can be screwed onto the external thread of the pressure relief mechanism 40 through the internal thread.

[0086] Alternatively, the first connection portion 41 may be a hollow threaded column arranged on the outer surface of the pressure relief mechanism 40, and the hollow portion of the hollow threaded column may avoid the pressure relief portion of the pressure relief mechanism 40 so that the pressure relief mechanism 40 may perform normal pressure relief operation; the fourth connection portion may be an internal thread formed on the inner wall surface of the gas guide line 50, whereby the gas guide line 50 may be screwed onto the hollow threaded column through the internal thread, so that the combustible smoke discharged from the pressure relief mechanism 40 may be introduced into the interior of the gas guide line 50 through the hollow threaded column.

[0087] Alternatively, the first connecting portion 41 may be a connecting pipe arranged on the outer surface of the pressure relief mechanism 40, and the pressure relief part of the pressure relief mechanism 40 is located within the tube body of the connecting pipe and faces the hollow part of the connecting pipe; an internal thread is provided on the inner wall surface of the connecting pipe, and the fourth connecting portion may be an external thread formed on the outer wall surface of the air guide line 50, thereby, the air guide line 50 can be screwed onto the internal thread of the connecting pipe through the external thread, so that the air guide line 50 is connected to the pressure relief mechanism 40.

[0088] Alternatively, the first connecting portion 41 may also be a first connecting bracket arranged on the outer surface of the pressure relief mechanism 40, and the fourth connecting portion may also be a second connecting bracket arranged on the air guide line 50; thus, the first bracket and the second bracket may abut against each other so that the air guide line 50 abuts against and connects to the pressure relief mechanism 40, and then the first connecting bracket and the second connecting bracket are fixed using fasteners (such as bolts, etc.) to achieve the purpose of connecting the inlet end 301 and the pressure relief mechanism 40.

[0089] The fifth connection portion is a connection structure provided at the other end of the air guide line 50 , and the fifth connection portion can be connected to the second connection portion 302 .

[0090] Optionally, the fifth connection portion may be an external thread formed on the outer wall of the air duct 50, and the second connection portion 302 may be an internal thread formed on the inner wall of the inlet end 301, whereby the inlet end 301 may be screwed onto the external thread of the air duct 50 via the internal thread.

[0091] Alternatively, the fifth connection portion may be an internal thread formed on the inner wall of the air duct 50, and the second connection portion 302 may be an external thread formed on the outer wall of the inlet end 301, whereby the inlet end 301 may be screwed onto the internal thread of the air duct 50 via the external thread.

[0092] In this arrangement, one end of the air guide line 50 is connected to the first connection part 41 of the pressure relief mechanism 40 through the fourth connection part, and the other end of the air guide line 50 is connected to the second connection part 302 of the inlet end 301 through the fifth connection part, thereby enabling the assembly connection between the air guide line 50 and the pressure relief mechanism 40 and the inlet end 301 respectively.

[0093] Referring to FIG. 4 to FIG. 8 , in some embodiments, an outlet port 303 is formed on the adsorption device 30 , and the battery 100 further includes a gas collecting line 60 , which is connected to the outlet port 303 .

[0094] The outlet end 303 of the adsorption device 30 is used to discharge the combustible flue gas after the electrolyte vapor is adsorbed.

[0095] Optionally, the outlet end 303 may be an opening provided on the adsorption device 30 , or a hollow tube structure provided on the adsorption device 30 , as long as the outlet end 303 can discharge the combustible smoke from the interior of the adsorption device 30 .

[0096] The gas collection pipeline 60 is a pipeline structure used to guide the combustible flue gas. The gas collection pipeline 60 can adopt a fire-resistant and high-temperature resistant pipeline structure.

[0097] The gas collection line 60 is connected to the outlet end 303; optionally, the gas collection line 60 can be connected to the outlet end 303 by means of a threaded connection, a fastener connection, a clamp connection, etc. It is understood that the combustible smoke discharged from the outlet end 303 can be collected in the gas collection line 60; alternatively, the gas collection line 60 can pass the combustible smoke discharged from the outlet end 303 into a collection container for collection.

[0098] In this arrangement, by connecting the gas collecting pipeline 60 to the outlet end 303 of the adsorption device 30 and using the gas collecting pipeline 60 to guide and collect the combustible flue gas after the electrolyte vapor is separated, the probability of the combustible flue gas causing combustion and explosion due to being discharged into the air can be further reduced.

[0099] 5 , 7 and 8 , in some embodiments, a sixth connection portion 304 is provided at the outlet end 303 , a seventh connection portion (not shown) is provided on the gas collection line 60 , and the sixth connection portion 304 is connected to the seventh connection portion.

[0100] The sixth connection portion 304 is a connection structure provided at the outlet end 303 , and the seventh connection portion is a connection structure provided on the gas collecting pipe. The sixth connection portion 304 can be connected to the seventh connection portion.

[0101] Optionally, the seventh connection part can be an external thread formed on the outer wall of the gas collecting pipeline 60, and the sixth connection part 304 can be an internal thread formed on the inner wall of the outlet end 303, so that the outlet end 303 can be screwed onto the external thread of the gas collecting pipeline 60 through the internal thread.

[0102] Alternatively, the seventh connection portion may be an internal thread formed on the inner wall of the gas collecting pipeline 60, and the sixth connection portion 304 may be an external thread formed on the outer wall of the outlet end 303, whereby the outlet end 303 may be screwed onto the internal thread of the gas collecting pipeline 60 via the external thread.

[0103] With such an arrangement, the gas collecting pipeline 60 can be connected to the sixth connection part 304 of the outlet end 303 through the seventh connection part, so that the discharged combustible flue gas is adsorbed and separated from the electrolyte vapor by the adsorption device 30, and then enters the gas collecting pipeline 60 for collection for subsequent processing.

[0104] Please refer to Figure 8. In some embodiments, the adsorption device 30 includes an adsorption structure 31. The adsorption structure 31 has an adsorption cavity 311 formed inside for accommodating an adsorption material piece 32. The adsorption structure 31 is provided with a first through hole 312 for introducing combustible smoke, and a second through hole 313 for discharging combustible smoke.

[0105] The adsorption structure 31 is used to accommodate an adsorption material piece 32 ; the adsorption material piece 32 is used to adsorb electrolyte vapor in the combustible flue gas, so that the electrolyte vapor is separated from the combustible flue gas.

[0106] Optionally, the adsorption structure 31 may be, but not limited to, a block structure, a column structure, a cylindrical structure, etc. An adsorption cavity 311 is formed inside the adsorption structure 31 , and the adsorption cavity 311 may be, but not limited to, a columnar cavity, a spherical cavity, a rectangular cavity, etc.

[0107] The adsorption structure 31 is provided with a first through hole 312 and a second through hole 313 ; the number of the first through hole 312 and the second through hole 313 can be one or any number of more than one.

[0108] The first through hole 312 and the second through hole 313 may be provided on the same side or different sides of the adsorption structure 31 . For example, the first through hole 312 and the second through hole 313 may be provided on the wall surfaces at opposite ends of the adsorption structure 31 .

[0109] With such an arrangement, the combustible flue gas discharged from the pressure relief mechanism 40 can be introduced into the adsorption chamber 311 through the first through hole 312, so that the adsorption material member 32 in the adsorption chamber 311 can adsorb and separate the electrolyte vapor from the passing combustible flue gas, and the combustible flue gas after separation of the electrolyte vapor can be discharged from the second through hole 313.

[0110] 8 , the adsorption material member 32 includes at least one of a resin structure member, a fiber structure member, an activated carbon structure member, a silicone grease structure member, and a diatomaceous earth structure member.

[0111] Resin structural components refer to structures formed using resin materials. Similarly, fiber structural components, activated carbon structural components, silicone grease structural components, and diatomaceous earth structural components refer to corresponding structures formed using fibers (such as carbon fibers, aramid fibers, and ultra-high molecular weight polyethylene fibers), activated carbon, silicone grease, and diatomaceous earth. By utilizing the inherent properties of these materials, when combustible smoke passes through these structural components, they absorb electrolyte vapor from the combustible smoke.

[0112] Optionally, the adsorption material piece 32 can be any one of a resin structure, a fiber structure, an activated carbon structure, a silicone grease structure, and a diatomaceous earth structure; or the adsorption material piece 32 can also be a combination structure formed by stacking or filling two or more of the above materials.

[0113] With such an arrangement, at least one of the resin structural member, the fiber structural member, the activated carbon structural member, the silicone grease structural member, and the diatomaceous earth structural member can be used to adsorb the electrolyte vapor in the combustible flue gas, thereby reducing the probability of combustion and explosion of the combustible flue gas.

[0114] Below, the battery 100 of the present application will be described in conjunction with specific implementations.

[0115] 2 to 8 , in this embodiment, the battery 100 includes a housing 10 , a battery cell 20 accommodated in a receiving cavity 101 of the housing 10 , a pressure relief mechanism 40 disposed on the housing 10 , and an adsorption device 30 located outside the housing 10 .

[0116] The pressure relief mechanism 40 is explained by taking the pressure relief valve as an example. A first connecting portion 41 is provided on the pressure relief valve. In this embodiment, the first connecting portion 41 is a hollow tube structure provided on the end face of the pressure relief valve facing away from the box body 10, and a first internal thread is formed on the inner wall surface of the tube structure.

[0117] The adsorption device 30 includes an adsorption structure 31, which can be a columnar structure. An adsorption chamber 311 is formed within the adsorption structure 31, which contains an adsorption material 32. The adsorption structure 31 is provided with an inlet 301 and an outlet 303. The inlet 301 and outlet 303 can be open slots at opposite ends of the adsorption structure 31. Furthermore, the adsorption chamber 311 is provided with a first through-hole 312 and a second through-hole 313. The first through-hole 312 provides communication between the inlet 301 and the adsorption chamber 311, while the second through-hole 313 provides communication between the outlet 303 and the adsorption chamber 311.

[0118] A second connection portion 302 is provided on the inner wall surface of the groove at the inlet end 301. In this embodiment, the second connection portion 302 may be a threaded structure formed on the inner wall surface of the groove at the inlet end 301. A sixth connection portion 304 is provided on the inner wall surface of the groove at the outlet end 303. In this embodiment, the sixth connection portion 304 may be a threaded structure formed on the inner wall surface of the groove at the outlet end 303.

[0119] The battery 100 may further include a gas duct 50 and a gas collection duct 60. The gas duct 50 is provided with a fourth connection portion and a fifth connection portion at opposite ends thereof. In this embodiment, the fourth connection portion and the fifth connection portion are externally threaded structures formed on the outer surfaces of the gas duct 50 at opposite ends thereof. The gas collection duct 60 is provided with a seventh connection portion at one end thereof. In this embodiment, the seventh connection portion may be an externally threaded structure formed on the outer surface of the gas collection duct 60.

[0120] During assembly, one end of the gas line 50 can be screwed into the pipe structure on the pressure relief valve via the external thread structure to achieve connection and conduction between the gas line 50 and the pressure relief valve; and the other end of the gas line 50 can be screwed into the inlet end 301 via the external thread structure to achieve communication between the gas line 50 and the inlet end 301. At the same time, the gas collection line 60 can be screwed into the outlet end 303 via the external thread structure to achieve communication between the gas collection line 60 and the outlet end 303. Thus, when thermal runaway occurs in the battery 100, the combustible flue gas can be discharged outward from the pressure relief valve, and the discharged combustible flue gas can be introduced into the inlet end 301 through the gas guide line 50, and enter the adsorption chamber 311 through the first through hole 312; the adsorption material member 32 in the adsorption chamber 311 can adsorb the electrolyte vapor in the combustible flue gas, so that the electrolyte vapor is separated from the combustible flue gas; the combustible flue gas after adsorption of the electrolyte vapor can enter the outlet end 303 through the second through hole 313, and be guided from the outlet end 303 to the gas collecting line 60 for collection for subsequent processing.

[0121] Please refer to FIG. 1 and FIG. 4 or FIG. 6 . In a second aspect, an embodiment of the present application further provides an electrical device, including the battery 100 as described above, and the battery 100 is used to provide electrical energy.

[0122] The electrical equipment provided in the embodiment of the present application is, for example, the above-mentioned vehicle 1000. The electrical equipment includes the above-mentioned battery 100. Since an adsorption device 30 is provided on the outside of the box 10 of the battery 100, and the adsorption device 30 can adsorb electrolyte vapor from the combustible flue gas discharged by the pressure relief mechanism 40, the combustible flue gas discharged by the electrical equipment including the battery 100 can also adsorb electrolyte vapor, and the probability of combustion and explosion of the combustible flue gas is low.

[0123] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A battery, characterized in that: include Battery cells; A box body, wherein a receiving cavity is formed inside the box body, and the battery cell is received in the receiving cavity; a pressure relief mechanism is provided on the box body; and An adsorption device is used to adsorb electrolyte vapor. An inlet end is formed on the adsorption device. A second connecting portion is provided at the inlet end. The second connecting portion is connected to the pressure relief mechanism or the box so that the inlet end is connected to the pressure relief mechanism.

2. The battery according to claim 1, wherein: The pressure relief mechanism is provided with a first connecting portion, and the first connecting portion is connected to the second connecting portion.

3. The battery according to claim 1, wherein: The box body is provided with a third connecting portion, the third connecting portion is connected to the second connecting portion, and the inlet end cover is provided on the pressure relief mechanism.

4. The battery according to claim 1, wherein: The battery further includes an air guide line, one end of which is connected to the pressure relief mechanism, and the other end of which is connected to the second connection portion and connected to the inlet end.

5. The battery according to claim 4, characterized in that: The pressure relief mechanism is provided with a first connection portion, and opposite ends of the air guide line are respectively provided with a fourth connection portion and a fifth connection portion, the fourth connection portion is connected to the first connection portion, and the fifth connection portion is connected to the second connection portion.

6. The battery according to any one of claims 1 to 5, characterized in that: An outlet port is formed on the adsorption device, and the battery further includes a gas collecting pipeline connected to the outlet port.

7. The battery according to claim 6, characterized in that: A sixth connection portion is provided at the outlet end, a seventh connection portion is provided on the gas collecting pipeline, and the sixth connection portion is connected to the seventh connection portion.

8. The battery according to claim 1, wherein: The adsorption device includes an adsorption structure, an adsorption cavity for accommodating an adsorption material is formed inside the adsorption structure, and a first through hole for introducing combustible smoke and a second through hole for discharging the combustible smoke are formed on the adsorption structure.

9. The battery according to claim 8, characterized in that: The adsorption material component includes at least one of a resin structural component, a fiber structural component, an activated carbon structural component, a silicone grease structural component, and a diatomaceous earth structural component.

10. An electrical device, characterized in that: The battery according to any one of claims 1 to 10 is used to provide electrical energy.

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