Battery components and electrical equipment

Abstract

The present application discloses a battery assembly and an electrical device. The battery assembly includes a battery and a particle processing device, the particle processing device is connected to the battery, and the particle processing device is used to process particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter. In this way, the particle processing device processes particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter, thereby reducing the risk of the particulate matter contacting with the combustible material outside the battery and causing the combustible material to catch fire, thereby improving the safety of the battery.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery assembly and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development. Batteries are an important part of electric vehicles, and their safety performance is particularly important. When a battery experiences thermal runaway, it can produce a large number of high-temperature particles of different particle sizes. If these high-temperature particles come into contact with combustibles in the external environment of the battery, it is easy to cause serious fire accidents. Utility Model Content

[0003] In view of the above problems, the present application provides a battery assembly and electrical equipment that can reduce the risk of combustible materials in the external environment of the battery catching fire due to high-temperature particulate matter generated by the battery.

[0004] In a first aspect, the present application provides a battery assembly, which includes a battery and a particle processing device, wherein the particle processing device is connected to the battery, and the particle processing device is used to process particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter.

[0005] In the battery assembly of the embodiment of the present application, the particle processing device processes the particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter, thereby reducing the risk of the particulate matter contacting the combustible material outside the battery and causing the combustible material to ignite, thereby improving the safety of battery use.

[0006] In some embodiments, the battery assembly includes an exhaust member, the exhaust member is formed with an exhaust channel, the exhaust channel is used to collect the particulate matter, and the particle treatment device is arranged in the exhaust channel. In this way, the exhaust member can reduce the influence of the particulate matter spreading to the surroundings, making it easier for the particle treatment device to treat the particulate matter.

[0007] In some embodiments, the battery is formed with a pressure relief portion, and the exhaust member is arranged outside the battery and docked with the pressure relief portion. In this way, the exhaust member is arranged outside the battery, so that the battery does not need to change its internal structure, which makes it easier to install the exhaust member.

[0008] In some embodiments, the particle processing device includes a plurality of processing components sequentially arranged along the flow path of the particles, and the plurality of processing components are used to perform multi-level different processing on the particles. In this way, the plurality of processing components perform multi-level different processing on the particles, which can improve the processing effect on the particles and reduce the temperature of the particles to below a preset temperature.

[0009] In certain embodiments, along the flow path of the particles, the particle sizes of the particles processed by the multiple processing components decrease in sequence, so that the processing efficiency of the particles is higher.

[0010] In some embodiments, the processing component includes a first component, which is arranged at the most upstream of the flow path relative to the other processing components, and the first component processes the particles by inertial collision. In this way, the first component processes the particles by inertial collision, which can block the flow of particles with larger particle sizes, thereby achieving the processing of particles with larger particle sizes.

[0011] In some embodiments, the first component includes a body and a baffle, the body has a main channel and a side channel, the baffle is arranged in the main channel, the side channel is arranged across the baffle, and both ends of the side channel are connected to the main channel. In this way, the baffle can block the flow of particles, so that particles with larger particle sizes fall into the side channel for temporary storage.

[0012] In some embodiments, the processing component includes a second component, which is connected downstream of the first component, and is used to receive the particles processed by the first component and process the particles in a liquid manner. In this way, the second component processes the particles in a liquid manner, which can not only cool the particles, but also collect the particles in the liquid.

[0013] In some embodiments, the second component includes a shell and a vent pipe, the shell is used to accommodate the coolant, the vent pipe is arranged in the shell, the vent pipe is connected to the first component and is provided with an air outlet, the air outlet is used to exhaust air into the shell, and the vent pipe is immersed in the coolant. In this way, the vent pipe can pass the particles flowing from the first component into the coolant through the air outlet, so as to further reduce the temperature of the particles and immerse at least part of the particles in the coolant, thereby reducing the particles that continue to flow.

[0014] In some embodiments, the second component includes a spray head disposed in the shell, and the spray head is used to spray coolant into the shell. In this way, the coolant sprayed by the spray head can continue to cool the particles emerging from the stationary coolant in the shell and reduce the flow rate of the particles, so that the particles are further retained in the shell of the second component.

[0015] In some embodiments, the processing component includes a third component, which is connected downstream of the second component, and is used to receive the particulate matter processed by the second component and process the particulate matter by filtering. In this way, the third component processes the particulate matter by filtering, which can reduce the particulate matter that continues to flow, reduce the particulate matter discharged to the surrounding environment of the battery, and reduce the flow speed of the particulate matter so that the particulate matter dissipates heat and cools down, reducing the probability of combustibles around the battery catching fire due to the particulate matter.

[0016] In some embodiments, the third component includes a cloth bag, and the cloth bag is used to filter and collect the particulate matter. In this way, the cloth bag can effectively collect the particulate matter and reduce the amount of particulate matter discharged into the surrounding environment of the battery.

[0017] In a second aspect, the present application provides an electrical device comprising a battery assembly according to any of the above embodiments.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0021] Figure 2 A schematic diagram of the structure of a battery in some embodiments of the present application;

[0022] Figure 3 A schematic diagram of the structure of a battery assembly according to some embodiments of the present application;

[0023] Figure 4A schematic diagram of the structure of a particle processing device according to some embodiments of the present application;

[0024] Figure 5 A schematic cross-sectional view of a particle processing device according to some embodiments of the present application;

[0025] Figure 6 A three-dimensional schematic diagram of a first component of some embodiments of the present application;

[0026] Figure 7 A cross-sectional schematic diagram of a first component of some embodiments of the present application;

[0027] Figure 8 A three-dimensional schematic diagram of a second component of some embodiments of the present application;

[0028] Fig. 9 A cross-sectional schematic diagram of a second component of some embodiments of the present application;

[0029] Fig.10 A three-dimensional schematic diagram of a third component of some embodiments of the present application;

[0030] Fig.11 A schematic plan view of a third component of some embodiments of the present application;

[0031] Fig.12 for Fig.11 Cross-sectional view along AA direction;

[0032] Fig.13 for Fig.11 Cross-sectional view along direction BB.

[0033] Explanation of the reference numerals: 1000-vehicle; 100-battery; 200-controller; 300-motor; 10-housing; 11-first part; 12-second part; 20-battery cell; 30-pressure relief part; 400-battery assembly; 500-particle treatment device; 510-treatment part; 520-first part; 521-main body; 5211-main channel; 5212-bypass channel; 522-baffle; 530-second part; 531-housing; 532-ventilation pipe; 5321-air outlet; 533-sprinkler; 540-third part; 541-cloth bag; 600-exhaust part; 610-exhaust channel. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0040] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0041] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0043] In the present application, battery cells 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 the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0044] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0045] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The current collector not coated with the positive active material layer protrudes from the current collector coated with the positive active material layer. The current collector not coated with the positive active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The current collector not coated with the negative active material layer protrudes from the current collector coated with the negative active material layer. The current collector not coated with the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the diaphragm can be PP (polypropylene) or PE (polyethylene).

[0046] The development of battery technology must take into account many design factors at the same time, such as energy density, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery safety must also be considered.

[0047] In the related art, when a battery experiences thermal runaway, the battery can generate a large amount of high-temperature particles of different sizes. If these high-temperature particles come into contact with combustibles in the external environment of the battery, serious fire accidents can easily occur.

[0048] In order to reduce the risk of high-temperature particulate matter generated by the battery causing combustible materials in the external environment of the battery to catch fire, the present application provides a battery assembly, the battery assembly includes a battery and a particle processing device, the particle processing device is connected to the battery, and the particle processing device is used to process particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter.

[0049] In such a battery assembly, the particle processing device processes the particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter, thereby reducing the risk of the particulate matter contacting the combustible material outside the battery and causing the combustible material to catch fire, thereby improving the safety of battery use.

[0050] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0051] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0052] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0053] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve 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.

[0054] In some embodiments, the battery 100 may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0055] Please refer to Figure 2 , Figure 2 The schematic diagram of the exploded structure of the battery 100 provided in some embodiments of the present application. The battery 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is accommodated in the box body 10. The box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures.

[0056] In some embodiments, the box body 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 jointly define a storage space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one end open, and the first portion 11 may be a plate-like structure, the first portion 11 covers the open side of the second portion 12, so that the first portion 11 and the second portion 12 jointly define a storage space; the first portion 11 and the second portion 12 may also be hollow structures with one side open, and the open side of the first portion 11 covers the open side of the second portion 12. Of course, the box body 10 formed by the first portion 11 and the second portion 12 may be in various shapes, such as a cylinder, a cuboid, etc.

[0057] In the battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10.

[0058] Of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series, in parallel or in a mixed connection, and then the plurality of battery modules are connected in series, in parallel or in a mixed connection to form a whole and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the plurality of battery cells 20.

[0059] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0060] See also Figure 3 The present application provides a battery assembly 400, which includes a battery 100 and a particle processing device 500, the particle device is connected to the battery 100, and the particle processing device 500 is used to process particulate matter formed by thermal runaway of the battery 100 to reduce the temperature of the particulate matter.

[0061] Specifically, the particle treatment device 500 is a device for reducing the temperature of the particulate matter in the thermal runaway process of the battery 100. The particle treatment device 500 can reduce the temperature of the particulate matter by dry method and / or wet method; the particle treatment device 500 can also treat the particulate matter by interception, filtration, cooling, etc. The treated particulate matter can be discharged into the surrounding environment of the battery 100, or can be collected.

[0062] In the battery assembly 400 of the embodiment of the present application, the particle processing device 500 processes the particulate matter formed by the thermal runaway of the battery 100 to reduce the temperature of the particulate matter, thereby reducing the risk of the particulate matter contacting the combustible material outside the battery 100 and causing the combustible material to catch fire, thereby improving the safety of the battery 100.

[0063] In some embodiments, the temperature of the cooled particulate matter is less than or equal to 50° C. Thus, the temperature of the cooled particulate matter is lower than the ignition point of the combustibles around the battery 100 , so that the combustibles will not be ignited.

[0064] like Figure 3 As shown, in some embodiments, the battery assembly 400 includes an exhaust member 600 , and the exhaust member 600 is formed with an exhaust channel 610 . The exhaust channel 610 is used to collect particulate matter, and the particle treatment device 500 is disposed in the exhaust channel 610 .

[0065] Specifically, the exhaust member 600 can be made of a high temperature resistant material, for example, the exhaust member 600 can be made of a metal material such as aluminum alloy. The exhaust channel 610 can be a straight channel or a curved channel. In addition, the cross-sectional shape of the exhaust channel 610 includes but is not limited to a specific shape such as a circle or a square. The exhaust channel 610 collects particulate matter so that the particulate matter will not spread too much, so that the exhaust member 600 can reduce the impact of the particulate matter spreading to the surroundings, and the particle processing device 500 can more easily process the particulate matter.

[0066] In some embodiments, the battery 100 is formed with a pressure relief portion 30, and the exhaust member 600 is disposed outside the battery 100 and docked with the pressure relief portion 30. Specifically, the pressure relief portion 30 refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery 100 reaches a predetermined threshold. The pressure relief portion 30 may take the form of an explosion-proof valve, an air valve, a pressure relief valve, or a safety valve, and may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery 100 reaches a predetermined threshold, the pressure relief portion 30 performs an action or a weak structure provided in the pressure relief portion 30 is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0067] The action produced by the pressure relief portion 30 may include, but is not limited to: at least a portion of the pressure relief portion 30 is ruptured, broken, torn or opened, etc. When the pressure relief portion 30 is actuated, the high-temperature and high-pressure substances inside the battery 100 will be discharged from the actuated portion as emissions. In this way, the battery 100 monomer can be depressurized under controllable pressure, thereby avoiding potential more serious accidents. The "actuation" mentioned in this application means that the pressure relief portion 30 is in action or activated to a certain state, so that the internal pressure and temperature of the battery 100 can be released.

[0068] Therefore, when thermal runaway occurs in the battery 100, the smoke and other particulate matter formed inside the battery 100 gathers in the pressure relief portion 30. When it reaches a certain level, the smoke and other particulate matter will break the pressure relief portion 30 and be discharged into the exhaust channel 610, so that the exhaust channel 610 can collect the particulate matter. The exhaust component 600 is arranged outside the battery 100, so that the battery 100 does not need to change its internal structure, and the installation of the exhaust component 600 is more convenient.

[0069] In one example, the vent member 600 may be connected to the housing 10 of the battery 100 by means of threads or the like.

[0070] See also Figure 4 and Figure 5 In some embodiments, the particle processing device 500 includes a plurality of processing components 510 arranged in sequence along the flow path of the particles, and the plurality of processing components 510 are used to perform multi-stage different processing on the particles. Specifically, the flow path of the particles includes, but is not limited to, a straight line, a curve, and the like. The number of processing components 510 is, for example, 2, 3, 4, and the like. The plurality of processing components 510 are used to perform multi-stage different processing on the particles, which means that adjacent processing components 510 have different processing methods for the particles. For example, in two adjacent processing components 510, one of the processing components 510 uses a dry method to process the particles, and the other processing component 510 uses a wet method to process the particles. In this way, the plurality of processing components 510 perform multi-stage different processing on the particles, which can improve the processing effect on the particles and reduce the temperature of the particles to below a preset temperature.

[0071] In some embodiments, along the flow path of the particles, the particle sizes of the particles processed by the multiple processing components 510 decrease in sequence. Specifically, the particles can be divided into large particles, medium particles, and small particles according to their particle sizes. Among them, large particles are particles with a particle size of D ≥ 10 μm, medium particles are particles with a particle size of 1 μm ≤ D1 < 10 μm, and small particles are particles with a particle size of D < 1 μm. In this way, the corresponding particles are processed according to the corresponding levels of the particles, so that the processing efficiency of the particles is higher.

[0072] In one example, large particles may be processed first, then medium particles, and finally small particles. In another example, medium-large particles may be processed first, and medium-small particles may be processed last.

[0073] In other embodiments, the plurality of processing components 510 may process the particulate matter according to a dry and wet method. For example, the particulate matter may be processed in a dry method, a wet method, and a dry method in sequence. For another example, the particulate matter may be processed in a wet method, a dry method, and a dry method in sequence. For another example, the particulate matter may be processed in a dry method, a wet method, and a dry method in sequence.

[0074] See also Figure 4-Figure 7 In some embodiments, the processing component 510 includes a first component 520, which is disposed at the most upstream of the flow path relative to other processing components 510, and the first component 520 processes particulate matter by inertial collision.

[0075] Specifically, inertial collision is a method of dust collection, which means that when the dust-laden gas encounters an obstacle during movement, it will flow around, but the particles with larger particle sizes will continue to maintain their original direction of movement due to their inertia, and then collide with the obstacle and be captured. In other words, the first component 520 can intercept and capture particles with larger particle sizes, and process the particles with larger particle sizes first. Therefore, the first component 520 processes the particles by inertial collision, which can block the flow of particles with larger particle sizes, thereby achieving the processing of particles with larger particle sizes.

[0076] See also Figure 6 and Figure 7 In some embodiments, the first component 520 includes a body 521 and a baffle 522, the body 521 has a main channel 5211 and a bypass channel 5212, the baffle 522 is arranged in the main channel 5211, the bypass channel 5212 is arranged across the baffle 522, and both ends of the bypass channel 5212 are connected to the main channel 5211.

[0077] Specifically, the body 521 is a hollow member and is generally tubular. The body 521 can be made of a high temperature resistant material such as metal so that the body 521 will not be ablated by high temperature particles. The width of the main channel 5211 can be greater than the width of the side channel 5212 so that particles with larger particle sizes can flow in the main channel 5211 and particles with smaller particle sizes can pass through the side channel 5212.

[0078] The baffle 522 can be arranged obliquely relative to the flow direction of the main channel 5211, so that the baffle 522 can guide particles with larger particle sizes into the side channel 5212. The side channel 5212 is arranged across the baffle 522, which means that the baffle 522 is located in the middle of the side channel 5212, so that both ends of the side channel 5212 are connected to the main channel 5211. Therefore, the baffle 522 can block the flow of particles, so that particles with larger particle sizes fall into the side channel 5212 for temporary storage, and the gas and particles with smaller particle sizes can continue to flow along the main channel 5211 after passing through the side channel 5212.

[0079] In some embodiments, there are multiple baffles 522, and the multiple baffles 522 are stacked. The multiple baffles 522 can improve the impact resistance of the baffles 522 and reduce the risk of the baffles 522 being deformed by the impact of particles.

[0080] See also Figure 4 and Figure 5 In some embodiments, the processing component 510 includes a second component 530, which is connected downstream of the first component 520. The second component 530 is used to receive the particles processed by the first component 520 and process the particles in a liquid manner.

[0081] Specifically, the second component 530 and the first component 520 can be connected directly or through a pipe, as long as the particles processed by the first component 520 can be introduced into the second component 530. The second component 530 processes the particles in a liquid manner, or in other words, the particles can contact the liquid in the second component 530, so that the particles can not only be deposited in the liquid, but also the particles on the liquid surface can be cooled.

[0082] Therefore, the second component 530 processes the particulate matter by means of liquid, which can not only cool the particulate matter but also collect the particulate matter in the liquid.

[0083] See also Figure 8 and Fig. 9 In some embodiments, the second component 530 includes a shell 531 and a vent pipe 532. The shell 531 is used to accommodate coolant. The vent pipe 532 is arranged in the shell 531. The vent pipe 532 is connected to the first component 520 and is provided with an air outlet 5321. The air outlet 5321 is used to exhaust air into the shell 531. The vent pipe 532 is immersed in the coolant.

[0084] Specifically, the shell 531 is a hollow structure, so that the coolant can be contained in the shell 531. The vent pipe 532 can be a separate structure from the shell 531, or an integral structure. The vent pipe 532 can be fixed to the bottom of the shell 531 by bonding, welding, etc., so that particulate matter enters the shell 531 from the bottom of the shell 531. The number of the air outlet holes 5321 of the vent pipe 532 can be multiple, and the multiple air outlet holes 5321 can be arranged along the circumference and axial direction of the vent pipe 532, so that the air outlet area of ​​the vent pipe 532 can be increased.

[0085] Since the vent pipe 532 is immersed in the coolant, the vent pipe 532 can pass the particles flowing from the first component 520 into the coolant through the air outlet 5321 to further reduce the temperature of the particles and immerse at least part of the particles in the coolant, thereby reducing the particles that continue to flow.

[0086] See also Fig. 9In some embodiments, the second component 530 includes a spray head 533 disposed in the shell 531, and the spray head 533 is used to spray the cooling liquid into the shell 531. Specifically, the water sprayed by the spray head 533 is diffused, so that the water sprayed by the spray head 533 can cover most of the internal space of the shell 531. As discussed above, since the particles enter the shell 531 from the bottom of the shell 531, when the flow rate of the particles is large, some of the particles emerge from the cooling liquid surface. Therefore, the spray head 533 can be installed on the top of the shell 531, so that the water sprayed by the spray head 533 can collide with the flowing particles, thereby effectively cooling and slowing down the particles. In this way, the cooling liquid sprayed by the spray head 533 can continue to cool the particles emerging from the stationary cooling liquid in the shell 531 and reduce the flow rate of the particles, so that the particles are further retained in the shell 531 of the second component 530.

[0087] See also Figure 4 and Figure 5 In some embodiments, the processing component 510 includes a third component 540, which is connected downstream of the second component 530. The third component 540 is used to receive the particulate matter processed by the second component 530 and process the particulate matter by filtering. Specifically, the third component 540 and the second component 530 can be directly connected or connected through components such as pipes. Processing particulate matter by filtering refers to a processing method that can intercept particulate matter above a predetermined size and allow gas and particulate matter of a predetermined size to pass through. In this way, the third component 540 processes the particulate matter by filtering, which can reduce the particulate matter that continues to flow, reduce the particulate matter discharged to the surrounding environment of the battery 100, and reduce the flow rate of the particulate matter so that the particulate matter dissipates heat and cools down, reducing the probability of combustibles around the battery 100 catching fire due to the particulate matter.

[0088] See also Figure 10-13 In some embodiments, the third component 540 includes a bag 541, which is used to filter and collect particulate matter. In this way, the bag 541 can effectively collect particulate matter and reduce the amount of particulate matter discharged to the surrounding environment of the battery 100, which can not only effectively reduce the risk of combustible fire in the surrounding environment of the battery 100, but also reduce the probability of environmental pollution.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery assembly, characterized in that: include: Battery; and A particle treatment device is connected to the battery, and is used to treat particulate matter formed by thermal runaway of the battery to reduce the temperature of the particulate matter.

2. The battery assembly according to claim 1, characterized in that: The battery assembly includes an exhaust member, the exhaust member forms an exhaust channel, the exhaust channel is used to collect the particulate matter, and the particle processing device is arranged in the exhaust channel.

3. The battery assembly according to claim 2, characterized in that: The battery is formed with a pressure relief portion, and the exhaust member is arranged outside the battery and docked with the pressure relief portion.

4. The battery assembly according to claim 1, characterized in that: The particle processing device includes a plurality of processing components sequentially arranged along a flow path of the particle, and the plurality of processing components are used to perform multi-level different processing on the particle.

5. The battery assembly according to claim 4, characterized in that: Along the flow path of the particulate matter, the particle sizes of the particulate matter processed by the multiple processing components decrease in sequence.

6. The battery assembly according to claim 4, characterized in that: The processing component includes a first component, which is arranged at the most upstream of the flow path relative to the other processing components, and the first component processes the particulate matter in an inertial collision manner.

7. The battery assembly according to claim 6, characterized in that: The first component includes a body and a baffle, the body has a main channel and a bypass channel, the baffle is arranged in the main channel, the bypass channel is arranged across the baffle, and both ends of the bypass channel are connected to the main channel.

8. The battery assembly according to claim 6, characterized in that: The processing component includes a second component, which is connected downstream of the first component. The second component is used to receive the particles processed by the first component and process the particles in a liquid manner.

9. The battery assembly according to claim 8, characterized in that: The second component includes a shell and a vent pipe, the shell is used to accommodate coolant, the vent pipe is arranged in the shell, the vent pipe is connected to the first component and is provided with an air outlet, the air outlet is used to exhaust air into the shell, and the vent pipe is immersed in the coolant.

10. The battery assembly according to claim 9, characterized in that: The second component includes a spray head arranged in the shell, and the spray head is used for spraying cooling liquid into the shell.

11. The battery assembly according to claim 8, characterized in that: The processing component includes a third component, which is connected downstream of the second component. The third component is used to receive the particulate matter processed by the second component and process the particulate matter by filtering.

12. The battery assembly according to claim 11, characterized in that: The third component includes a cloth bag, and the cloth bag is used to filter and collect the particulate matter.

13. An electrical equipment, characterized in that: A battery assembly comprising the battery assembly described in any one of claims 1 to 12.

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