Exhaust member, case, battery, and electric device

Abstract

The utility model provides an exhaust component, a box body, a battery and an electric device, and belongs to the technical field of batteries. The exhaust component comprises a body part and a one-way flow guide part. An exhaust cavity is formed in the body part, the body part is provided with a first surface, and vent holes communicated with the exhaust cavity are formed in the first surface. The one-way flow guide part is arranged on the body part, and the one-way flow guide part is configured to allow emissions discharged by a pressure relief mechanism of the battery monomer to enter the exhaust cavity through the vent hole and is configured to prevent the emissions in the exhaust cavity from being discharged through the vent hole. Through the one-way flow guide part, emissions can be allowed to enter the exhaust cavity through the vent hole, and the emissions can be prevented from being discharged out of the exhaust cavity, so that the phenomenon that the emissions discharged into the exhaust cavity by the pressure relief mechanism flow back is relieved; therefore, the risk of further spreading of the emissions in the battery due to backflow of the emissions in the exhaust cavity can be reduced, and the use safety of the battery with the exhaust component can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to an exhaust component, a housing, a battery, and an electrical device. Background Technology

[0002] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, power batteries, as the power source, play an irreplaceable and crucial role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also increasing. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of both service life and safety. Batteries are composed of multiple battery cells, and thermal runaway of battery cells is one of the important factors threatening battery safety performance. However, in the case of thermal runaway of existing batteries, the emissions released from the inside of the battery cells still pose significant safety hazards, such as high-temperature fumes, thus compromising consumer safety. Utility Model Content

[0003] This application provides an exhaust component, a housing, a battery, and an electrical device, which can effectively reduce safety hazards that may exist during battery use.

[0004] In a first aspect, embodiments of this application provide an exhaust component, including a body portion and a one-way flow guide portion; the body portion has an exhaust chamber inside, and the body portion has a first surface, the first surface having a vent hole communicating with the exhaust chamber; the one-way flow guide portion is disposed on the body portion, and the one-way flow guide portion is configured to allow emissions released by the pressure relief mechanism of the battery cell to enter the exhaust chamber through the vent hole, and is configured to prevent emissions located in the exhaust chamber from being discharged through the vent hole.

[0005] In the above technical solution, by providing a vent hole on the first surface of the main body that communicates with the exhaust chamber, the emissions released by the pressure relief mechanism of the battery cell when thermal runaway occurs can enter the exhaust chamber through the vent hole, thereby achieving the directional discharge of emissions from the battery cell. Furthermore, the main body is provided with a unidirectional flow guide, which allows emissions to enter the exhaust chamber through the vent hole and prevents emissions from flowing out of the exhaust chamber from the outside of the exhaust component. This ensures that emissions released by the pressure relief mechanism, after entering the exhaust chamber through the vent hole, will not flow out through other vent holes, mitigating the backflow of emissions released into the exhaust chamber. This reduces the risk of backflow of emissions within the exhaust chamber causing further spread of emissions inside the battery, thus improving the safety of the battery with this exhaust component.

[0006] In some embodiments, a first surface is formed on one side of the body portion along a first direction, and a vent is provided to be disposed opposite to the pressure relief mechanism along the first direction; the first surface is provided with a plurality of vents, a unidirectional flow guide is provided to block the vents, and the unidirectional flow guide is one-to-one with the vents, and the unidirectional flow guide is configured to be triggered by the discharge released by the pressure relief mechanism disposed opposite to it to open the vents.

[0007] In the above technical solution, by providing multiple vent holes on the first surface of the main body along a first direction for corresponding to the pressure relief mechanism of the battery cell, and by sealing each vent hole with a corresponding one-way flow guide, the emissions released by the pressure relief mechanism of the battery cell during thermal runaway can directly impact the vent holes and trigger the one-way flow guide to open the vent holes. This allows the emissions released by the pressure relief mechanism of the battery cell to be directly discharged into the exhaust chamber through the vent holes, while the one-way flow guide prevents the emissions in the exhaust chamber from flowing out of the exhaust chamber through other vent holes. The exhaust material is directed to the outside of the main body, ensuring that the exhaust material released by the pressure relief mechanism will not flow out through other vents after entering the exhaust chamber through the vent. This mitigates the backflow of exhaust material released into the exhaust chamber by the pressure relief mechanism. In turn, while ensuring that the exhaust chamber inside the exhaust component has sufficient space, it can effectively reduce the risk of further spread of exhaust material inside the battery. It can also mitigate the phenomenon of exhaust material impacting other battery cells through other vents, thereby reducing the risk of large-scale battery cell fires and explosions caused by thermal runaway of individual battery cells.

[0008] In some embodiments, the unidirectional flow guide covers the vent, and the unidirectional flow guide is configured to detach from the body under the impact of the discharge released by the pressure relief mechanism to open the vent.

[0009] In the above technical solution, the vent is blocked by setting the unidirectional flow guide to cover the vent, and can be separated from the main body under the impact of the emissions released by the corresponding pressure relief mechanism, thereby realizing the function of opening the vent triggered by the emissions released by the pressure relief mechanism. This structure is simple and easy to implement and manufacture.

[0010] In some embodiments, the unidirectional airflow section is a plate-like structure covering the vent holes.

[0011] In the above technical solution, by setting the one-way flow guide part used to cover the vent hole as a plate structure, the one-way flow guide part with this structure can cover the vent hole in a way that provides a better sealing effect, and can also optimize the space occupied by the one-way flow guide part.

[0012] In some embodiments, the vent hole penetrates the cavity wall of the exhaust chamber, and the unidirectional flow guide is connected to the cavity wall of the exhaust chamber.

[0013] In the above technical solution, by setting the unidirectional flow guide on the cavity wall of the exhaust chamber to cover the vent holes penetrating the cavity wall, the exhaust component with this structure has two advantages. First, it allows the unidirectional flow guide to better detach from the cavity wall of the exhaust chamber under the impact of the exhaust material released by the pressure relief mechanism, thereby opening the vent holes. Second, when the exhaust material impacts and covers the unidirectional flow guide of other vent holes from the inside of the exhaust chamber, the unidirectional flow guide will be pressed tightly against the cavity wall of the exhaust chamber, thereby improving the sealing effect of the unidirectional flow guide on the vent holes and alleviating the phenomenon of backflow of exhaust material from other vent holes.

[0014] In some embodiments, a receiving groove is provided on the cavity wall of the exhaust cavity, the receiving groove connecting the vent hole and the exhaust cavity, and at least a portion of the unidirectional guide is received in the receiving groove.

[0015] In the above technical solution, the cavity wall of the exhaust chamber is provided with a groove for accommodating the unidirectional flow guide, and the vent hole and the exhaust chamber are connected through the groove. That is to say, the vent hole penetrates the bottom wall of the groove. The exhaust component with this structure can improve the assembly stability of the unidirectional flow guide on the main body while ensuring that the unidirectional flow guide blocks the vent hole. This reduces the risk of the unidirectional flow guide accidentally detaching from the main body due to vibration or other environmental factors during use, thereby effectively reducing the phenomenon of the unidirectional flow guide accidentally opening the vent hole.

[0016] In some embodiments, the unidirectional flow guide is a one-way valve disposed in the vent hole.

[0017] In the above technical solution, by setting the one-way flow guide part as a one-way valve located in the vent, the one-way flow guide part can open the vent under the action of the discharge released by the pressure relief mechanism, so as to prevent the discharge in the exhaust chamber from flowing back. The one-way flow guide part with this structure has a good anti-backflow effect.

[0018] In some embodiments, along a first direction, the body portion has two opposing first surfaces, each of which is provided with a vent hole.

[0019] In the above technical solution, the main body has a first surface on both sides in the first direction, and both first surfaces are provided with vent holes. That is to say, the main body has vent holes communicating with the exhaust chamber on both sides in the first direction, so that battery cells can be assembled on both sides of the exhaust component, so that one exhaust component can be adapted to two rows of battery cells arranged opposite to each other by the pressure relief mechanism. This helps to save the production cost of batteries with such exhaust components and optimizes the arrangement of battery cells in the battery.

[0020] In some embodiments, the first surface is the surface with the largest area among the outer surfaces of the body portion.

[0021] In the above technical solution, the first surface with the vent hole is the surface with the largest area among the outer surfaces of the main body. The exhaust component with this structure is convenient to set the vent hole on the first surface opposite to the pressure relief mechanism of the battery cell. On the other hand, it allows the side of the battery cell with the pressure relief mechanism to be abutted on the first surface, so that the emissions released by the pressure relief mechanism can be discharged into the exhaust chamber of the main body through the vent hole.

[0022] In some embodiments, the interior of the body is further provided with a medium channel, which is not connected to the exhaust chamber. The medium channel is used to contain refrigerant to manage the temperature of the battery cells.

[0023] In the above technical solution, by setting a medium channel inside the main body that is not connected to the exhaust chamber, that is, the medium channel and the exhaust chamber are set independently and do not interfere with each other, the temperature of the battery cell can be managed by introducing a refrigerant into the medium channel. This realizes that the exhaust component integrates the discharge of the battery cell's pressure relief mechanism and the thermal management of the battery cell into one structure, which is conducive to optimizing the internal space of the battery with such an exhaust component.

[0024] Secondly, embodiments of this application also provide a housing, including a housing body and the aforementioned exhaust component; the exhaust component is disposed within the housing body and is configured to divide the interior of the housing body into multiple receiving cavities, the receiving cavities being used to receive individual battery cells.

[0025] Thirdly, embodiments of this application also provide a battery, including a battery cell and the aforementioned housing; the battery cell is housed within a housing cavity, and the battery cell is provided with a pressure relief mechanism configured to release the internal pressure of the battery cell.

[0026] In some embodiments, a first surface is formed on one side of the body portion along the first direction, a pressure relief mechanism is disposed on one side of the battery cell in the first direction, and the pressure relief mechanism is disposed opposite to the vent.

[0027] In the above technical solution, a first surface is formed on one side of the main body in the first direction, that is, a vent is provided on one side of the main body in the first direction, and a pressure relief mechanism is correspondingly provided on one side of the battery cell in the first direction, so that the pressure relief mechanism can be correspondingly provided with the vent on the main body, thereby facilitating the direct discharge of the emissions released by the pressure relief mechanism into the exhaust chamber of the main body through the vent when the battery cell experiences thermal runaway, which helps to alleviate the phenomenon of the emissions released by the pressure relief mechanism spreading in the box.

[0028] In some embodiments, the battery includes a plurality of battery cells arranged along a second direction, the body extends along the second direction, and the vent holes correspond one-to-one with the pressure relief mechanism, the second direction being perpendicular to the first direction.

[0029] In the above technical solution, by setting multiple battery cells in the battery to be arranged along the second direction, and providing vent holes on the body extending along the second direction that correspond one-to-one with the pressure relief mechanism of the multiple battery cells, it is possible to enable multiple battery cells arranged along the second direction to share a single exhaust component. On the one hand, this reduces the assembly difficulty between the exhaust component and the battery cells, and on the other hand, it helps to reduce the manufacturing cost of the battery.

[0030] In some embodiments, the battery cell has a cuboid structure and a second surface, which is the surface with the largest area on the outer surface of the battery cell. The second surface is parallel to the first direction and the second direction.

[0031] In the above technical solution, by setting the battery cell as a cuboid structure, and the second surface with the largest area on the outer surface of the battery cell being parallel to both the first and second directions, that is, the thickness direction of the battery cell being perpendicular to the first and second directions, the battery cells are arranged along the second direction in the direction of the length or width of the battery cell. The battery with this structure can effectively increase the spacing of the pressure relief mechanism of the battery cell in the second direction, thereby increasing the distance of the vent holes in the second direction. On the one hand, this effectively alleviates the phenomenon of insufficient structural strength of the body due to the excessive density of vent holes in the first direction, thereby reducing the risk of damage to the body under the high temperature of the emissions released by the pressure relief mechanism. On the other hand, it can reduce the impact of the emissions released by the battery cell's pressure relief mechanism on the unidirectional flow guide of the adjacent vent holes.

[0032] In some embodiments, the battery includes multiple rows of battery cells arranged along a third direction, each row of battery cells including multiple battery cells arranged along a second direction, the third direction being perpendicular to the first and second directions.

[0033] In the above technical solution, multiple battery cells inside the battery are arranged in multiple rows along a third direction, and each row of battery cells includes multiple battery cells arranged along a second direction, thereby enabling one exhaust component to accommodate more battery cells, which is beneficial to reduce the manufacturing cost of the battery and save the internal space of the battery.

[0034] Fourthly, embodiments of this application also provide an electrical device, including the battery described above, which is used to provide electrical energy. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0037] Figure 2 Exploded views of the battery structure provided in some embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the structure of a battery cell provided in some embodiments of this application;

[0039] Figure 4 This is a schematic diagram of the structure of an exhaust component provided in some embodiments of this application;

[0040] Figure 5 Cross-sectional views of exhaust components provided in some embodiments of this application;

[0041] Figure 6 This is a schematic diagram illustrating the assembly of an exhaust component and a battery cell according to some embodiments of this application;

[0042] Figure 7 for Figure 5 A partial enlarged view of point A on the exhaust component shown;

[0043] Figure 8 A cross-sectional view of an exhaust component provided in some embodiments of this application;

[0044] Figure 9 for Figure 8 A partial enlarged view of point B on the exhaust component shown;

[0045] Figure 10 A cross-sectional view of an exhaust component provided in some embodiments of this application;

[0046] Figure 11 for Figure 10 A partial enlarged view of point C on the exhaust component shown;

[0047] Figure 12 for Figure 5 A magnified view of part D of the exhaust component shown.

[0048] Icons: 1000 - Vehicle; 100 - Battery; 10 - Housing; 11 - Housing Body; 111 - First Part; 112 - Second Part; 12 - Exhaust Component; 121 - Body Part; 1211 - Exhaust Chamber; 1212 - First Surface; 1213 - Vent Hole; 1214 - Receiving Slot; 1215 - Medium Channel; 122 - One-Way Flow Guide; 13 - Receiving Chamber; 20 - Battery Cell; 21 - Pressure Relief Mechanism; 22 - Second Surface; 200 - Controller; 300 - Motor; X - First Direction; Y - Second Direction; Z - Third Direction. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0051] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0054] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0055] In this application, "multiple" means two or more (including two).

[0056] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to this. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to this.

[0057] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells or multiple battery modules. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0058] A battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly is the component in the battery cell where electrochemical reactions occur; it consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode 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, while the uncoated positive current collector protrudes beyond it, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode 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, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without 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. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0059] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0060] Batteries possess outstanding advantages such as high energy density, low environmental pollution, high power density, long lifespan, wide applicability, and low self-discharge coefficient, making them a crucial component of today's new energy development. With the continuous advancement of battery technology, higher requirements are being placed on battery safety.

[0061] The inventors discovered that, for a typical battery, the battery is composed of multiple battery cells, and each battery cell is usually equipped with a pressure relief mechanism. This mechanism can release the internal pressure of the battery cell when thermal runaway occurs, thereby reducing the risk of explosion caused by thermal runaway. However, because the emissions released by individual battery cells during thermal runaway can spread inside the battery, such as high-temperature fumes, it can easily lead to large-scale thermal runaway.

[0062] Therefore, to address the issue of high-temperature fumes and other gases generated during thermal runaway of individual battery cells spreading within the battery casing, existing technologies employ multiple baffles within the battery housing. These baffles divide the casing into multiple chambers for accommodating individual battery cells. Each baffle contains an exhaust channel for venting, and an opening on one side connects to this channel, allowing high-temperature fumes released by the battery cell's pressure relief mechanism to enter the exhaust channel through the opening, thus mitigating the spread of these gases within the battery. However, in this battery structure, the high-temperature fumes released by the pressure relief mechanism, after entering the exhaust channel through the opening, are highly susceptible to overflowing from other openings in the baffle. This can cause backflow of the released high-temperature fumes, preventing them from spreading further within the battery. Furthermore, the high-temperature fumes flowing out of the exhaust channel can impact other battery cells, potentially leading to thermal runaway, fire, or explosion in those cells, thus compromising the battery's safety.

[0063] Based on the above considerations, and in order to address the significant safety hazards posed by batteries during use, the inventors, after in-depth research, designed a venting component. The venting component includes a main body and a unidirectional flow guide. The main body has an internal vent chamber and a first surface with a vent hole communicating with the vent chamber. The unidirectional flow guide is located within the main body and is configured to allow emissions from the battery cell's pressure relief mechanism to enter the vent chamber through the vent hole, and is also configured to prevent emissions located within the vent chamber from exiting through the vent hole.

[0064] In this type of exhaust component, a vent hole communicating with the exhaust chamber is provided on the first surface of the main body. This allows the emissions released by the pressure relief mechanism of the battery cell in the event of thermal runaway to enter the exhaust chamber through the vent hole, thus achieving directional discharge of the emissions from the battery cell. Furthermore, a unidirectional flow guide is provided on the main body. This unidirectional flow guide allows the emissions to enter the exhaust chamber through the vent hole and prevents the emissions from flowing out of the exhaust component. This ensures that the emissions released by the pressure relief mechanism, after entering the exhaust chamber through the vent hole, will not flow out through other vent holes, mitigating the backflow of emissions released into the exhaust chamber. This reduces the risk of backflow of emissions within the exhaust chamber causing further spread of emissions inside the battery, thereby improving the safety of batteries with this type of exhaust component.

[0065] The exhaust component disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system comprising the housing, battery, etc., disclosed in this application can be used to construct such an electrical device. This helps to mitigate the backflow of emissions into the exhaust chamber of the exhaust component and their spread within the battery, thereby improving battery safety.

[0066] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0067] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0068] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the 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 supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0069] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Please refer to Figure 2 and Figure 3 , Figure 2 This is an exploded view of the structure of the battery 100 provided in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of a battery cell 20 provided in some embodiments of this application. The battery 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10.

[0071] The housing 10 includes a housing body 11, which provides assembly space for the battery cells 20. The housing body 11 can adopt various structures. Figure 2 In the embodiment, the housing body 11 includes a first portion 111 and a second portion 112, with the second portion 112 covering the first portion 111. The first portion 111 and the second portion 112 together define an assembly space for accommodating the battery cell 20. The first portion 111 can be a hollow structure open at one end, and the second portion 112 can be a plate-like structure, covering the open side of the first portion 111, so that the first portion 111 and the second portion 112 together define an assembly space for accommodating the battery cell 20. In some embodiments, the first portion 111 and the second portion 112 can both be hollow structures open on one side, with the open side of the second portion 112 covering the open side of the first portion 111. Of course, the housing body 11 formed by the first portion 111 and the second portion 112 can be of various shapes, such as a cylinder, a cuboid, etc. For example, in... Figure 2 In the middle, the box body 11 is a cuboid structure.

[0072] In battery 100, there can be one or more battery cells 20. When battery 100 has multiple battery cells 20, the multiple battery cells 20 can be connected in series, parallel, or in a mixed manner. A mixed connection means that the multiple battery cells 20 are connected in both series and parallel. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the whole assembly of the multiple battery cells 20 is housed in housing 10. Of course, battery 100 can also be formed by first connecting multiple battery cells 20 in series, parallel, or in a mixed manner to form a battery module, and then connecting multiple battery modules in series, parallel, or in a mixed manner to form a whole, which is also housed in housing 10. Battery 100 may also include other structures. For example, battery 100 may also include a busbar component for realizing the electrical connection between multiple battery cells 20.

[0073] See Figure 3 As shown, the battery cell 20 is equipped with a pressure relief mechanism 21, which is located on one side of the battery cell 20. The pressure relief mechanism 21 is used to release the internal pressure of the battery cell 20, that is, to release the emissions inside the battery cell 20, such as high-temperature flue gas, when thermal runaway occurs. The pressure relief mechanism 21 can be a component such as an explosion-proof valve, explosion-proof disc, gas valve, pressure relief valve, or safety valve.

[0074] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes. For example, in... Figure 3 In the middle, the battery cell 20 has a cuboid structure.

[0075] In some embodiments, see Figure 2 and Figure 3 As shown, the housing 10 may also include at least one exhaust member 12 disposed within the housing body 11. The at least one exhaust member 12 is configured to divide the interior of the housing body 11 into a plurality of receiving cavities 13 for accommodating the battery cells 20. The exhaust member 12 is used to accommodate emissions from the battery cells 20 released by the pressure relief mechanism 21 during thermal runaway, such as high-temperature flue gas.

[0076] For example, in Figure 2 In this configuration, the side of the battery cell 20 equipped with the pressure relief mechanism 21 rests against the exhaust member 12, so that the emissions released by the pressure relief mechanism 21 of the battery cell 20 are discharged into the exhaust member 12. Of course, in other embodiments, the side of the battery cell 20 equipped with the pressure relief mechanism 21 may face the first part 111 or the second part 112.

[0077] For example, in Figure 2 In the middle, the exhaust component 12 is disposed in the first part 111 of the box body 11.

[0078] According to some embodiments of this application, refer to Figure 2 and Figure 3 Please refer to further details. Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the exhaust component 12 provided in some embodiments of this application. Figure 5 This is a cross-sectional view of an exhaust component 12 provided in some embodiments of this application. This application provides an exhaust component 12, which includes a body portion 121 and a one-way flow guide portion 122. An exhaust chamber 1211 is disposed inside the body portion 121, and the body portion 121 has a first surface 1212, on which a vent hole 1213 communicating with the exhaust chamber 1211 is provided. The one-way flow guide portion 122 is disposed on the body portion 121, and is configured to allow emissions from the pressure relief mechanism 21 of the battery cell 20 to enter the exhaust chamber 1211 through the vent hole 1213, and is configured to prevent emissions located in the exhaust chamber 1211 from being discharged through the vent hole 1213.

[0079] The first surface 1212 is one of the outer surfaces of the body portion 121.

[0080] The exhaust chamber 1211 of the main body 121 serves to accommodate the emissions released by the pressure relief mechanism 21 of the battery cell 20. The exhaust chamber 1211 can be connected to the outside through the casing 10 of the battery 100 to discharge the emissions released by the pressure relief mechanism 21 to the outside of the battery 100, or it can be not connected to the outside so that the emissions released by the pressure relief mechanism 21 are contained in the exhaust chamber 1211.

[0081] The unidirectional flow guide 122 is configured to allow the emissions released by the pressure relief mechanism 21 of the battery cell 20 to enter the exhaust chamber 1211 through the vent 1213, and is configured to prevent the emissions located in the exhaust chamber 1211 from being discharged through the vent 1213. That is, the unidirectional flow guide 122 only allows the emissions released by the pressure relief mechanism 21 to flow in one direction. In other words, only the emissions released by the pressure relief mechanism 21 are allowed to enter the exhaust chamber 1211 of the main body 121 from the receiving cavity 13 in the housing 10 through the vent 1213.

[0082] For example, the unidirectional flow guide 122 can have various structures, such as a one-way valve, a unidirectional flow guide diaphragm, or a unidirectional flow guide tube.

[0083] By providing a vent hole 1213 on the first surface 1212 of the main body 121 that communicates with the exhaust chamber 1211, the emissions released by the pressure relief mechanism 21 of the battery cell 20 when thermal runaway occurs can enter the exhaust chamber 1211 through the vent hole 1213, thereby achieving the function of directional emission of the emissions released by the battery cell 20. Furthermore, the main body 121 is provided with a one-way flow guide 122. The one-way flow guide 122 allows the exhaust material to enter the exhaust chamber 1211 through the vent 1213 and prevents the exhaust material from flowing out of the exhaust member 12 from the exhaust chamber 1211. This prevents the exhaust material released by the pressure relief mechanism 21 from flowing out of other vents 1213 after entering the exhaust chamber 1211 through the vent 1213. This alleviates the backflow phenomenon of the exhaust material released by the pressure relief mechanism 21 into the exhaust chamber 1211, thereby reducing the risk of the exhaust material in the exhaust chamber 1211 backflowing and causing the exhaust material to spread further inside the battery 100. This is beneficial to improving the safety of the battery 100 with this exhaust member 12.

[0084] According to some embodiments of this application, refer to Figure 4 and Figure 5 Please refer to further details. Figure 6 , Figure 6This is a schematic diagram of the assembly of the exhaust component 12 and the battery cell 20 provided in some embodiments of this application. Along the first direction X, a first surface 1212 is formed on one side of the body portion 121, and a vent 1213 is provided to be disposed opposite to the pressure relief mechanism 21 along the first direction X. The first surface 1212 is provided with a plurality of vents 1213. A unidirectional flow guide portion 122 blocks the vents 1213, and the unidirectional flow guide portion 122 corresponds one-to-one with the vents 1213. The unidirectional flow guide portion 122 is configured to be triggered by emissions released by the pressure relief mechanism 21 disposed opposite to it, thereby opening the vents 1213.

[0085] The first surface 1212 is the surface of the body portion 121 on one side in the first direction X.

[0086] The vent 1213 is arranged opposite to the pressure relief mechanism 21 along the first direction X, that is, each vent 1213 is arranged facing the pressure relief mechanism 21 of a battery cell 20 along the first direction X. In other words, the pressure relief mechanism 21 of each battery cell 20 is aligned with a vent 1213 along the first direction X.

[0087] The one-way flow guide 122 serves to block the vent 1213 and open the vent 1213 under the action of the emissions released by the pressure relief mechanism 21. That is, when the battery cell 20 experiences thermal runaway, the emissions released by the pressure relief mechanism 21 of the battery cell 20 will impact the vent 1213, thereby triggering the one-way flow guide 122 to open the vent 1213 so that the emissions can enter the exhaust chamber 1211 through the vent 1213.

[0088] The one-way flow guide 122 can block the vent 1213 in various ways. For example, the one-way flow guide 122 can block the vent 1213 by covering it, that is, the projection of the one-way flow guide 122 in the first direction X is larger than the vent 1213. Of course, the one-way flow guide 122 can also block the vent 1213 by being placed inside the vent 1213 to block it.

[0089] It should be noted that in this embodiment, the unidirectional flow guide 122 is triggered by the impact of the discharge from the pressure relief mechanism 21. Of course, in other embodiments, it can also be controlled by a control mechanism to achieve the function of triggering the unidirectional flow guide 122. For example, a control mechanism is provided inside the housing 10 of the battery 100. The control mechanism is used to detect the usage status of the pressure relief mechanism 21 of the battery cell 20. When the control mechanism detects that the pressure relief mechanism 21 is triggered and releases the internal pressure of the battery cell 20, the control mechanism can control the unidirectional flow guide 122 to open the vent 1213 to achieve the function of triggering the unidirectional flow guide 122.

[0090] By providing a plurality of vent holes 1213 on the first surface 1212 of the main body 121, which are arranged in the first direction X to correspond to the pressure relief mechanism 21 of the battery cell 20, and by sealing each vent hole 1213 with a corresponding one-way flow guide 122, the emissions released by the pressure relief mechanism 21 of the battery cell 20 during thermal runaway can directly impact the vent holes 1213 and trigger the one-way flow guide 122 to open the vent holes 1213. This allows the emissions released by the pressure relief mechanism 21 of the battery cell 20 to be directly discharged into the exhaust chamber 1211 through the vent holes 1213. At the same time, the one-way flow guide 122 can prevent the emissions in the exhaust chamber 1211 from passing through other vent holes from the exhaust chamber 1211. The discharge from the vent 1213 cavity to the outside of the main body 121 prevents the discharge from the pressure relief mechanism 21 from flowing out of other vents 1213 after entering the exhaust chamber 1211 through the vent 1213. This alleviates the backflow of the discharge from the pressure relief mechanism 21 into the exhaust chamber 1211. In this way, while ensuring that the exhaust chamber 1211 inside the exhaust component 12 has sufficient space, it can effectively reduce the risk of further spread of the discharge inside the battery 100. It can also alleviate the phenomenon of the discharge impacting other battery cells 20 through other vents 1213, thereby reducing the risk of large-scale fire and explosion of battery cells 20 due to thermal runaway of individual battery cells 20.

[0091] According to some embodiments of this application, refer to Figure 5 Please refer to further details. Figure 7 , Figure 7 for Figure 5 A partial enlarged view of point A of the exhaust component 12 shown. The one-way flow guide 122 covers the vent 1213, and the one-way flow guide 122 is configured to detach from the body 121 under the impact of the exhaust gas released by the pressure relief mechanism 21 to open the vent 1213.

[0092] The unidirectional flow guide 122 covers the vent 1213, that is, along the first direction X, the unidirectional flow guide 122 completely covers the vent 1213 to block the vent 1213.

[0093] The one-way flow guide 122 is configured to detach from the main body 121 under the impact of the discharge released by the pressure relief mechanism 21. That is, when the battery cell 20 experiences thermal runaway, the discharge released by the pressure relief mechanism 21 will impact the one-way flow guide 122, causing the one-way flow guide 122 to detach from the main body 121 and no longer cover the vent 1213, thereby opening the vent 1213.

[0094] Optionally, the unidirectional flow guide 122 can be connected to the cavity wall of the exhaust chamber 1211 to cover the vent hole 1213, or it can be connected to the hole wall of the vent hole 1213 to cover the vent hole 1213.

[0095] The unidirectional flow guide 122 can be connected to the main body 121 by means of adhesive or snap-fit, so that the unidirectional flow guide 122 can be better separated from the main body 121 under the impact of the exhaust gas released by the pressure relief mechanism 21.

[0096] For example, in this embodiment, the material of the one-way flow guide 122 can be a high-temperature resistant material such as steel, mica or ceramic, so that the one-way flow guide 122 will not melt under the high temperature impact of the discharge released by the pressure relief mechanism 21, so as to ensure the normal use of the one-way flow guide 122.

[0097] By blocking the vent 1213 by setting the unidirectional flow guide 122 to cover the vent 1213, and being able to detach from the main body 121 under the impact of the discharge released by the corresponding pressure relief mechanism 21, the function of opening the vent 1213 is achieved by the discharge released by the pressure relief mechanism 21. This structure is simple and easy to implement and manufacture.

[0098] In some embodiments, the unidirectional flow guide 122 is a plate-like structure that covers the vent 1213. By setting the unidirectional flow guide 122 for covering the vent 1213 as a plate-like structure, the unidirectional flow guide 122 with this structure can cover the vent 1213 more easily, so as to achieve a better sealing effect on the vent 1213, and optimize the space occupied by the unidirectional flow guide 122.

[0099] According to some embodiments of this application, please continue to refer to Figure 5 and Figure 7 As shown, the vent 1213 penetrates the cavity wall of the exhaust chamber 1211, and the unidirectional flow guide 122 is connected to the cavity wall of the exhaust chamber 1211.

[0100] The unidirectional flow guide 122 is connected to the cavity wall of the exhaust cavity 1211. That is, the unidirectional flow guide 122 is disposed inside the exhaust cavity 1211 and connected to the cavity wall of the exhaust cavity 1211, so that the unidirectional flow guide 122 covers the vent hole 1213 from the inside of the exhaust cavity 1211, thereby achieving the sealing effect of the vent hole 1213.

[0101] For example, the one-way flow guide 122 is adhered to the cavity wall of the exhaust chamber 1211 so that when the exhaust material released by the pressure relief mechanism 21 impacts the one-way flow guide 122 from the outside of the main body 121, the one-way flow guide 122 can effectively detach from the main body 121. Conversely, when the exhaust material located inside the exhaust chamber 121 impacts the one-way flow guide 122, it can increase the pressure of the one-way flow guide 122 on the cavity wall of the exhaust chamber 1211, thereby effectively preventing the exhaust material from flowing back. Of course, in other embodiments, the one-way flow guide 122 can also be connected to the cavity wall of the exhaust chamber 1211 by snap-fit.

[0102] By placing the unidirectional flow guide 122 on the cavity wall of the exhaust chamber 1211 to cover the vent hole 1213 penetrating the cavity wall of the exhaust chamber 1211, the exhaust component 12 with this structure has the following advantages: First, the unidirectional flow guide 122 is better able to detach from the cavity wall of the exhaust chamber 1211 under the impact of the exhaust material released by the pressure relief mechanism 21, thereby opening the vent hole 1213. Second, when the exhaust material impacts the unidirectional flow guide 122 covering other vent holes 1213 from inside the exhaust chamber 1211, the unidirectional flow guide 122 will be pressed tightly against the cavity wall of the exhaust chamber 1211, thereby improving the blocking effect of the unidirectional flow guide 122 on the vent hole 1213 and alleviating the phenomenon of backflow of exhaust material from other vent holes 1213.

[0103] According to some embodiments of this application, refer to Figure 8 and Figure 9 , Figure 8 A cross-sectional view of the exhaust component 12 provided in some embodiments of this application. Figure 9 for Figure 8 A partial enlarged view of point B of the exhaust component 12 shown. A receiving groove 1214 is provided on the cavity wall of the exhaust chamber 1211. The receiving groove 1214 connects the vent hole 1213 and the exhaust chamber 1211. At least a portion of the unidirectional flow guide 122 is received in the receiving groove 1214.

[0104] The exhaust chamber 1211 has a receiving groove 1214 on its cavity wall surface. The receiving groove 1214 connects the vent hole 1213 and the exhaust chamber 1211, meaning that the vent hole 1213 penetrates the bottom wall of the groove, allowing the vent hole 1213 to communicate with the exhaust chamber 1211 through the groove. For example, in this embodiment, the unidirectional flow guide 122 can be connected to the bottom wall of the groove or to the side wall of the groove. The connection method can be mutual adhesion or snap-fit ​​to achieve coverage of the vent hole 1213.

[0105] At least a portion of the unidirectional flow guide 122 is accommodated in the receiving groove 1214. That is, the unidirectional flow guide 122 may be entirely accommodated in the receiving groove 1214 or partially accommodated in the receiving groove 1214. In other words, the unidirectional flow guide 122 has a portion extending from the groove into the exhaust chamber 1211 along the first direction X.

[0106] The cavity wall of the exhaust chamber 1211 is provided with a groove for accommodating the one-way flow guide 122, and the vent hole 1213 and the exhaust chamber 1211 are connected through the groove. The exhaust component 12 with this structure can improve the assembly stability of the one-way flow guide 122 on the body part 121 while ensuring that the one-way flow guide 122 blocks the vent hole 1213. This reduces the risk of the one-way flow guide 122 accidentally detaching from the body part 121 due to vibration or other environmental factors during use, thereby effectively reducing the phenomenon of the one-way flow guide 122 accidentally opening the vent hole 1213.

[0107] According to some embodiments of this application, refer to Figure 10 and Figure 11 , Figure 10 This is a cross-sectional view of the exhaust component 12 provided in some embodiments of this application. Figure 11 for Figure 10 The diagram shows a partial enlarged view of point C on the exhaust component 12. The one-way flow guide 122 is a one-way valve disposed within the vent 1213. That is, the one-way flow guide 122 can be disposed within the vent 1213 to block the vent 1213. The specific structure of the one-way valve can be found in related technologies and will not be described in detail here.

[0108] For example, the unidirectional flow guide 122 can be a pneumatic check valve, and its structure can be various, such as a spring-loaded check valve, a gravity-operated check valve, or a diaphragm check valve.

[0109] By setting the one-way flow guide 122 as a one-way valve located in the vent 1213, the one-way flow guide 122 can open the vent 1213 under the action of the discharge released by the pressure relief mechanism 21, so as to prevent the discharge in the exhaust chamber 1211 from flowing back. The one-way flow guide 122 with this structure has a good anti-backflow effect.

[0110] According to some embodiments of this application, see Figure 4 , Figure 5 and Figure 6 As shown, along the first direction X, the body part 121 has two opposing first surfaces 1212, and both first surfaces 1212 are provided with vent holes 1213.

[0111] The main body 121 has two opposing first surfaces 1212, and each of the two first surfaces 1212 is provided with a vent hole 1213. That is, the main body 121 has vent holes 1213 communicating with the exhaust chamber 1211 on both sides in the first direction X.

[0112] The main body 121 has a first surface 1212 on both sides in the first direction X, and both first surfaces 1212 are provided with vent holes 1213. That is, the main body 121 has vent holes 1213 communicating with the exhaust chamber 1211 on both sides in the first direction X, so that battery cells 20 can be assembled on both sides of the exhaust member 12, so that one exhaust member 12 can be adapted to two rows of battery cells 20 arranged opposite to each other in the pressure relief mechanism 21. This helps to save the production cost of the battery 100 with such an exhaust member 12 and helps to optimize the arrangement of battery cells 20 in the battery 100.

[0113] According to some embodiments of this application, see Figure 4 As shown, the first surface 1212 is the surface with the largest area among the outer surfaces of the body part 121.

[0114] For example, the body portion 121 is a cuboid structure, and the first direction X is the thickness direction of the body portion 121, such that the first surface 1212 is the surface with the largest area among the outer surfaces of the body portion 121.

[0115] The first surface 1212, which has a vent hole 1213, is the surface with the largest area on the outer surface of the main body 121. The exhaust member 12 with this structure facilitates the placement of the vent hole 1213 on the first surface 1212, which is opposite to the pressure relief mechanism 21 of the battery cell 20. On the other hand, it allows the first surface 1212 to be abutted against the side of the battery cell 20 where the pressure relief mechanism 21 is located, so that the emissions released by the pressure relief mechanism 21 can be discharged into the exhaust chamber 1211 of the main body 121 through the vent hole 1213.

[0116] According to some embodiments of this application, refer to Figure 5 Please refer to further details. Figure 12 , Figure 12 for Figure 5 The enlarged view shows a portion of the exhaust component 12 at point D. The body 121 also has a medium channel 1215 inside. The medium channel 1215 is not connected to the exhaust chamber 1211. The medium channel 1215 is used to contain refrigerant to manage the temperature of the battery cell 20.

[0117] The medium channel 1215 and the exhaust chamber 1211 are not connected to each other, that is, the medium channel 1215 and the exhaust chamber 1211 are set independently and do not interfere with each other.

[0118] Optionally, the number of the medium channels 1215 provided on the body portion 121 may be one or more. Exemplarily, in Figure 12 the body portion 121 is provided with a plurality of medium channels 1215 extending along the extension direction of the body portion 121.

[0119] The medium channels 1215 serve to accommodate the refrigerant, so that after injecting the refrigerant into the medium channels 1215, the battery cell 20 can be cooled down, thereby realizing the management of the temperature of the battery cell 20.

[0120] Exemplarily, the refrigerant may be a gas, such as air or hydrogen, etc., or the refrigerant may also be a liquid, such as water, brine solution or liquid nitrogen, etc.

[0121] By providing the medium channels 1215 that are not connected to the exhaust cavity 1211 inside the body portion 121, the temperature of the battery cell 20 can be managed by introducing the refrigerant into the medium channels 1215, so as to realize a structure that integrates the exhaust member 12 for accommodating the emissions discharged by the pressure relief mechanism 21 of the battery cell 20 and the thermal management of the battery cell 20, which is conducive to optimizing the internal space of the battery 100 having such an exhaust member 12.

[0122] According to some embodiments of the present application, referring to Figure 2 as shown, the embodiment of the present application further provides a box body 10, which includes a box body 11 and the exhaust member 12 of any of the above solutions. The exhaust member 12 is disposed inside the box body 11, and the exhaust member 12 is configured to divide the interior of the box body 11 into a plurality of accommodation cavities 13 for accommodating the battery cells 20.

[0123] Wherein, the exhaust member 12 is disposed in the first part 111 of the box body 11 to divide the interior of the box body 11 into a plurality of accommodation cavities 13.

[0124] Optionally, the number of the exhaust members 12 provided inside the box body 11 may be one or more. When there is one exhaust member 12, the exhaust member 12 divides the interior of the box body 11 into two accommodation cavities 13, so that the exhaust member 12 and the first part 111 enclose a structure in the shape of a Chinese character 'Ri' (day). When there are multiple exhaust members 12, the multiple exhaust members 12 may be arranged at intervals along the length direction or the width direction of the box body 11, so that the exhaust member 12 and the first part 111 enclose a structure in the shape of a Chinese character 'Mu' (eye), etc. Of course, the multiple exhaust members 12 may also be arranged crosswise inside the first part 111, so that the exhaust member 12 and the first part 111 enclose a structure in the shape of a Chinese character 'Tian' (field), etc. Exemplarily, in Figure 2 there are two exhaust members 12, and the two exhaust members 12 are arranged at intervals along the first direction X to divide the interior of the box body 11 into three accommodation cavities 13.

[0125] According to some embodiments of this application, see Figure 2 As shown, this application embodiment also provides a battery 100, which includes a battery cell 20 and a housing 10 of any of the above embodiments. The battery cell 20 is housed in a housing cavity 13, and the battery cell 20 is provided with a pressure relief mechanism 21, which is configured to release the internal pressure of the battery cell 20.

[0126] The battery cell 20 can be assembled into the receiving cavity 13 in various ways. For example, the side of the battery cell 20 with the pressure relief mechanism 21 can be positioned facing the first surface 1212 of the exhaust member 12, or the side of the battery cell 20 with the pressure relief mechanism 21 can be positioned facing the first part 111 or the second part 112.

[0127] According to some embodiments of this application, see Figure 2 , Figure 5 and Figure 6 As shown, along the first direction X, a first surface 1212 is formed on one side of the body portion 121, and a pressure relief mechanism 21 is disposed on one side of the battery cell 20 in the first direction X, and the pressure relief mechanism 21 is disposed opposite to the vent 1213.

[0128] The pressure relief mechanism 21 is arranged opposite to the vent 1213, that is, along the first direction X, the pressure relief mechanism 21 is aligned with the vent 1213.

[0129] Optionally, the side of the battery cell 20 with the pressure relief mechanism 21 may abut against the first surface 1212 of the body portion 121, or there may be a gap between the battery cell 20 and the first surface 1212 of the body portion 121 in the first direction X. For example, in this embodiment, the side of the battery cell 20 with the pressure relief mechanism 21 abuts against the first surface 1212 of the body portion 121, which helps to improve the assembly stability between the battery cell 20 and the exhaust member 12, and facilitates the discharge of the exhaust material released by the pressure relief mechanism 21 through the vent hole 1213 into the exhaust chamber 1211 of the body portion 121.

[0130] The main body 121 forms a first surface 1212 on one side in the first direction X, that is, the vent 1213 is provided on one side of the main body 121 in the first direction X, and the pressure relief mechanism 21 is correspondingly provided on one side of the battery cell 20 in the first direction X, so that the pressure relief mechanism 21 can be correspondingly provided with the vent 1213 on the main body 121, thereby facilitating the direct discharge of the exhaust material released by the pressure relief mechanism 21 in the event of thermal runaway of the battery cell 20 into the exhaust chamber 1211 of the main body 121 through the vent 1213, which helps to alleviate the phenomenon of the exhaust material released by the pressure relief mechanism 21 spreading in the housing 10.

[0131] According to some embodiments of this application, please refer to Figure 2 and Figure 6 As shown, the battery 100 includes a plurality of battery cells 20 arranged along the second direction Y, the body portion 121 extends along the second direction Y, and the vent 1213 corresponds one-to-one with the pressure relief mechanism 21. The second direction Y is perpendicular to the first direction X.

[0132] For example, the body portion 121 is a cuboid structure extending along the second direction Y, and the vent 1213 is provided on one side of the body portion 121 in the thickness direction.

[0133] In some embodiments, the body portion 121 has a first surface 1212 on both sides in the first direction X, and each first surface 1212 is provided with a vent hole 1213. Correspondingly, the body portion 121 has a battery cell 20 on both sides in the first direction X, and the pressure relief mechanism 21 of the battery cell 20 located on both sides of the body portion 121 in the first direction X is facing the orientation.

[0134] By arranging the multiple battery cells 20 in the battery 100 along the second direction Y, and providing vent holes 1213 on the body portion 121 extending along the second direction Y that correspond one-to-one with the pressure relief mechanism 21 of the multiple battery cells 20, it is possible to enable the multiple battery cells 20 arranged along the second direction Y to share a single exhaust component 12. This reduces the assembly difficulty between the exhaust component 12 and the battery cells 20, and also helps to reduce the manufacturing cost of the battery 100.

[0135] According to some embodiments of this application, please refer to Figure 2 , Figure 3 and Figure 6 As shown, the battery cell 20 has a cuboid structure and a second surface 22. The second surface 22 is the surface with the largest area among the outer surfaces of the battery cell 20. The second surface 22 is parallel to the first direction X and the second direction Y.

[0136] Among them, the second surface 22 is the surface with the largest area on the outer surface of the battery cell 20, that is, the second surface 22 is the surface of the battery cell 20 in the thickness direction of the battery cell 20.

[0137] The second surface 22 is parallel to the first direction X and the second direction Y, that is, the plane defined by the first direction X and the second direction Y is parallel to the second surface 22. In other words, the thickness direction of the battery cell 20 is perpendicular to the first direction X and the second direction Y. For example, in... Figure 6 In the middle, the second direction Y is the length direction of the battery cell 20, and the pressure relief mechanism 21 is disposed on one side of the battery cell 20 in the width direction (first direction X) of the battery cell 20.

[0138] It should be noted that in other embodiments, the second direction Y can also be the thickness direction of the battery cell 20, that is, the second surface 22 is perpendicular to the second direction Y, that is, multiple battery cells 20 are arranged along the thickness direction of the battery cell 20.

[0139] By setting the battery cell 20 as a cuboid structure, and making the second surface 22 with the largest area on the outer surface of the battery cell 20 parallel to both the first direction X and the second direction Y, that is, the thickness direction of the battery cell 20 is perpendicular to the first direction X and the second direction Y, so that the battery cells 20 are arranged in the second direction Y in the direction of length or width, the battery 100 with this structure can effectively increase the spacing of the pressure relief mechanism 21 of the battery cell 20 in the second direction Y, thereby increasing the distance of the vent holes 1213 in the second direction Y. On the one hand, it can effectively alleviate the phenomenon that the structural strength of the body part 121 is insufficient due to the excessive density of the vent holes 1213 in the first direction X, so as to reduce the risk of damage to the body part 121 under the high temperature of the emissions released by the pressure relief mechanism 21. On the other hand, it can reduce the impact of the emissions released by the pressure relief mechanism of the battery cell 20 on the unidirectional flow guide part 122 set in the adjacent vent holes 1213.

[0140] In some embodiments, please continue to see Figure 2 , Figure 3 and Figure 6 As shown, the battery 100 includes multiple rows of battery cells 20 arranged along a third direction Z. Each row of battery cells 20 includes multiple battery cells 20 arranged along a second direction Y. The third direction Z is perpendicular to the first direction X and the second direction Y.

[0141] Among them, the third direction Z is perpendicular to the first direction X and the second direction Y, that is, the third direction Z is perpendicular to the second surface 22 of the battery cell 20. In other words, the third direction Z is the thickness direction of the battery cell 20.

[0142] For example, battery 100 includes two rows of battery cells 20 arranged along a third direction Z. Of course, in other embodiments, battery 100 includes three, four, five, or six rows of battery cells 20 arranged along a third direction Z.

[0143] Multiple battery cells 20 within the battery 100 are arranged in multiple rows along the third direction Z, and each row of battery cells 20 includes multiple battery cells 20 arranged along the second direction Y, thereby enabling one exhaust component 12 to accommodate more battery cells 20, which helps to reduce the manufacturing cost of the battery 100 and save internal space of the battery 100.

[0144] According to some embodiments of this application, this application also provides an electrical device, which includes a battery 100 of any of the above schemes, and the battery 100 is used to provide electrical energy to the electrical device.

[0145] The electrical device can be any of the aforementioned devices or systems that use battery 100.

[0146] According to some embodiments of this application, see Figures 2 to 4 , Figures 8 to 9 as well as Figure 12 As shown, this application provides an exhaust component 12, which includes a body portion 121 and a unidirectional flow guide portion 122. An exhaust chamber 1211 is provided inside the body portion 121. Along the first direction X, both sides of the body portion 121 have first surfaces 1212. The first surfaces 1212 are provided with a plurality of vent holes 1213 communicating with the exhaust chamber 1211. The vent holes 1213 are arranged opposite to a pressure relief mechanism 21 along the first direction X. A receiving groove 1214 is provided on the cavity wall surface of the exhaust chamber 1211, and the receiving groove 1214 communicates with the vent holes 1213 and the exhaust chamber 1211. One-way flow guides 122 and vent holes 1213 are provided in a one-to-one correspondence. One-way flow guides 122 are connected to the main body 121, and at least a portion of the one-way flow guides 122 is accommodated in a receiving groove 1214. One-way flow guides 122 cover the vent holes 1213, and are configured to detach from the main body 121 under the impact of emissions released by the pressure relief mechanism 21, thereby opening the vent holes 1213. The main body 121 also contains a medium channel 1215, which is not connected to the exhaust chamber 1211. The medium channel 1215 is used to contain refrigerant to manage the temperature of the battery cell 20.

[0147] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0148] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An exhaust component, characterized in that, include: The main body has an exhaust chamber inside, and the main body has a first surface with a vent hole communicating with the exhaust chamber. as well as A one-way flow guide is provided on the main body. The one-way flow guide is configured to allow the emissions released by the pressure relief mechanism of the battery cell to enter the exhaust chamber through the vent, and is configured to prevent the emissions located in the exhaust chamber from being discharged through the vent.

2. The exhaust component according to claim 1, characterized in that, Along the first direction, the first surface is formed on one side of the body portion, and the vent hole is arranged opposite to the pressure relief mechanism along the first direction; The first surface is provided with a plurality of vent holes, the one-way flow guide portion blocks the vent holes, and the one-way flow guide portion corresponds one-to-one with the vent holes. The one-way flow guide portion is configured to be triggered by the discharge of the pressure relief mechanism disposed opposite to it to open the vent holes.

3. The exhaust component according to claim 2, characterized in that, The one-way flow guide covers the vent, and the one-way flow guide is configured to detach from the body under the impact of the discharge released by the pressure relief mechanism to open the vent.

4. The exhaust component according to claim 3, characterized in that, The unidirectional airflow section is a plate-like structure covering the vent.

5. The exhaust component according to claim 3, characterized in that, The vent hole penetrates the cavity wall of the exhaust chamber, and the one-way flow guide is connected to the cavity wall of the exhaust chamber.

6. The exhaust component according to claim 5, characterized in that, The cavity wall of the exhaust chamber is provided with a receiving groove, the receiving groove is connected to the vent and the exhaust chamber, and at least a portion of the unidirectional flow guide is accommodated in the receiving groove.

7. The exhaust component according to claim 2, characterized in that, The one-way flow guide is a one-way valve installed in the vent.

8. The exhaust component according to claim 2, characterized in that, Along the first direction, the body portion has two opposing first surfaces, each of which is provided with the vent hole.

9. The exhaust component according to claim 1, characterized in that, The first surface is the surface with the largest area among the outer surfaces of the body part.

10. The exhaust component according to any one of claims 1-9, characterized in that, The body portion also has a medium channel inside, which is not connected to the exhaust chamber. The medium channel is used to contain refrigerant to manage the temperature of the battery cell.

11. A box, characterized in that, include: Box body; as well as The venting member as described in any one of claims 1-10 is disposed within the housing body and is configured to divide the interior of the housing body into a plurality of receiving cavities for receiving individual battery cells.

12. A battery, characterized in that, include: The housing as described in claim 11; as well as A battery cell is housed within the receiving cavity, and the battery cell is provided with a pressure relief mechanism configured to release the internal pressure of the battery cell.

13. The battery according to claim 12, characterized in that, Along the first direction, the first surface is formed on one side of the body portion, the pressure relief mechanism is disposed on one side of the battery cell in the first direction, and the pressure relief mechanism is disposed opposite to the vent.

14. The battery according to claim 13, characterized in that, The battery includes a plurality of battery cells arranged along a second direction, the body extends along the second direction, the vent holes correspond one-to-one with the pressure relief mechanism, and the second direction is perpendicular to the first direction.

15. The battery according to claim 14, characterized in that, The battery cell has a cuboid structure and a second surface, which is the surface with the largest area on the outer surface of the battery cell. The second surface is parallel to the first direction and the second direction.

16. The battery according to claim 15, characterized in that, The battery comprises multiple rows of battery cells arranged along a third direction, and each row of battery cells comprises multiple battery cells arranged along a second direction, wherein the third direction is perpendicular to the first direction and the second direction.

17. An electrical device, characterized in that, Includes the battery as described in any one of claims 12-16, the battery being used to provide electrical energy.

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