Case, battery, electric device, and method for manufacturing battery

Abstract

The application discloses a box, a battery, a power consumption device and a manufacturing method of the battery. The box for the battery comprises a box body, the box body has a plurality of accommodation cavities for accommodating battery monomers, and the accommodation cavities are provided with guide structures for guiding airflow into the accommodation cavities to cool the battery monomers. The technical scheme provided by the application can reduce the production cost of the battery under the condition of ensuring the safety of the battery.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the battery manufacturing process, production cost is a significant factor. Therefore, reducing battery production cost is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] This application provides a casing, a battery, an electrical device, and a method for manufacturing the battery, which can reduce the production cost of the battery while ensuring battery safety.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, this application provides a housing for a battery, comprising:

[0007] The housing body has multiple accommodating cavities for accommodating individual battery cells; wherein, the inner wall of each accommodating cavity is provided with a guiding structure for guiding airflow through the battery cells to cool them.

[0008] Compared to the method of assembling a separate air-cooling pipe in the housing to provide airflow into the accommodating cavity to cool the battery cells, the technical solution of this application embodiment provides airflow into the accommodating cavity to cool the battery cells by setting a guiding structure in the accommodating cavity. This method saves material and assembly costs of the air-cooling pipe while ensuring the cooling effect on the battery cells (i.e., ensuring battery safety), thereby reducing the production cost of the battery.

[0009] In some embodiments, the receiving cavity is cylindrical, and the guiding structure extends axially along the receiving cavity.

[0010] By designing the accommodating cavity to be cylindrical, the cylindrical battery cells can be stably placed within the cavity, improving the structural stability of the battery. The guiding structure extends axially along the accommodating cavity, allowing airflow to act along the axial direction of the cylindrical battery cells on their outer circumference, effectively removing heat and ensuring adequate cooling.

[0011] In some embodiments, each of the accommodating cavities is provided with a plurality of the guiding structures, which are distributed at circumferential intervals along the accommodating cavity.

[0012] Multiple guiding structures are arranged at intervals along the circumference of the accommodating cavity, which can improve the cooling effect on the battery cells and ensure the safety of the battery.

[0013] In some embodiments, the guide structure includes a groove disposed on the inner wall of the receiving cavity.

[0014] By creating grooves on the inner wall of the accommodating cavity to form a guiding structure that can provide airflow to the battery cells, the manufacturing cost of the housing can be effectively reduced, thereby reducing the manufacturing cost of the battery.

[0015] In some embodiments, the enclosure further includes a bottom protective plate located below and connected to the enclosure body, with an airflow channel formed between the bottom protective plate and the enclosure body, and the airflow channel communicating with the guide structure.

[0016] By installing a bottom protective plate at the bottom of the casing, the casing can be supported and protected. At the same time, airflow can enter the guiding structure through the airflow channel to achieve a cooling effect on the battery cells.

[0017] In some embodiments, the housing body includes a first bottom wall, a first side wall, and a partition. The first side wall surrounds the first bottom wall, and the partition is used to divide the space enclosed by the first side wall and the first bottom wall into a plurality of receiving cavities. Each receiving cavity has an opening disposed opposite to the first bottom wall.

[0018] The casing has a simple structure, is easy to manufacture, and effectively reduces production costs. The partition effectively divides the space enclosed by the first side wall and the first bottom wall into multiple cavities to accommodate multiple battery cells.

[0019] In some embodiments, one end of the guide structure penetrates the first bottom wall to communicate with the airflow channel.

[0020] One end of the guide structure is designed to penetrate through the first bottom wall, so that airflow can enter the guide structure through the airflow channel and exchange heat with the battery cells, thus ensuring the cooling effect on the battery cells.

[0021] In some embodiments, the surface of the first bottom wall opposite to the opening is provided with a reinforcing portion.

[0022] By providing a reinforcing part on the surface of the first bottom wall opposite to the opening, the structural strength of the first bottom wall can be improved, the structural stability of the box body can be improved, the support effect on the battery cells can be improved, the overall structural strength of the battery can be improved, and the safety of the battery can be guaranteed.

[0023] In some embodiments, the reinforcing part is a honeycomb-shaped reinforcing rib.

[0024] By setting honeycomb-shaped reinforcing ribs, the structural strength of the first bottom wall can be effectively improved, thereby ensuring the safety of the battery.

[0025] In some embodiments, the bottom protective plate is provided with an air inlet, which is connected to the airflow channel.

[0026] By setting up an air inlet, airflow from the external environment can enter the airflow channel through the air inlet, thereby guiding the structure to cool the battery cells.

[0027] In some embodiments, the bottom guard plate includes a second bottom wall and a second side wall, the second side wall surrounding the second bottom wall, the second side wall being connected to the first side wall, and the airflow channel being formed between the second bottom wall and the first bottom wall.

[0028] The bottom protective plate has a simple structure and is easy to manufacture. The second bottom wall is arranged at intervals with the first bottom wall and is surrounded by the first and second side walls, thus forming an airflow channel.

[0029] In some embodiments, the second sidewall has a slot on the end face facing the housing body, the first sidewall includes a main body and an extension, the main body extends from the edge of the first bottom wall in a direction away from the bottom protective plate, and the extension extends from the edge of the first bottom wall in a direction close to the bottom protective plate, and the extension is inserted into the slot.

[0030] By setting slots and extensions, the second sidewall can be connected to the first sidewall by plugging in, which reduces the assembly difficulty of the bottom guard plate and the box body and improves assembly efficiency.

[0031] In some embodiments, the second sidewall is provided with a first mounting hole, the extension is provided with a second mounting hole, and the second sidewall and the extension are connected by a connector passing through the first mounting hole and the second mounting hole.

[0032] A first mounting hole is provided on the second sidewall, and a second mounting hole is provided on the extension, so that the first sidewall and the second sidewall can be connected by a connector, thereby improving the connection stability of the first sidewall and the second sidewall and improving the overall structural strength of the battery.

[0033] In some embodiments, the bottom protective plate further includes a support member, one end of which is connected to the second bottom wall, and the other end of which abuts against the first bottom wall.

[0034] The support components effectively enhance the support of the bottom protective plate for the main body of the battery, thereby improving the overall structural strength of the battery.

[0035] In some embodiments, the bottom guard plate includes a plurality of the support members, which are spaced apart along a first direction, and each support member extends along a second direction perpendicular to the first direction, and the plurality of support members divide the airflow channel into a plurality of sub-channels.

[0036] By incorporating multiple support components, the support for the main body of the housing can be effectively improved. Simultaneously, multiple support components divide the airflow channel into multiple sub-channels, allowing airflow to flow through these sub-channels into the corresponding guide structures, thus ensuring effective cooling for each individual battery cell.

[0037] In some embodiments, the support member includes a first support portion and a plurality of second support portions, the first support portion extending along the second direction and connected to the second bottom wall, the second support portions being intersected with the first support portion, and the plurality of second support portions being spaced apart along the second direction.

[0038] The support structure is simple and easy to manufacture. By setting the first support part and the second support part, the body of the box is supported in both the first and second directions, thereby ensuring the overall structural strength of the battery and ensuring the safety of the battery.

[0039] Secondly, this application provides a battery, comprising: a battery cell; and a housing as described in any of the above claims, wherein the battery cell is housed in the accommodating cavity.

[0040] Thirdly, this application provides an electrical device including the aforementioned battery, which is used to provide electrical energy.

[0041] Fourthly, this application provides a method for manufacturing a battery, the method comprising: providing a housing, the housing comprising a housing body having a plurality of accommodating cavities, the inner wall of the accommodating cavities being provided with a guiding structure; providing a battery cell; and placing the battery cell in the accommodating cavity, wherein the guiding structure is used to guide airflow into the accommodating cavity to cool the battery cell.

[0042] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0043] 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.

[0044] Figure 1 This is a schematic diagram of the structure of a vehicle according to some embodiments of this application;

[0045] Figure 2 Here are exploded views of the battery according to some embodiments of this application;

[0046] Figure 3 These are perspective views of the box in some embodiments of this application;

[0047] Figure 4 This is an exploded perspective view of the casing and battery cells in some embodiments of this application;

[0048] Figure 5 This is a top view of the housing in some embodiments of this application;

[0049] Figure 6 for Figure 5 Enlarged view at point VI;

[0050] Figure 7 This is a perspective view of the bottom protective plate in some embodiments of this application;

[0051] Figure 8 This is a cross-sectional view of the housing in some embodiments of this application;

[0052] Figure 9 This is a bottom view of the box body in some embodiments of this application;

[0053] Figure 10 This is a partial schematic diagram of the second sidewall and the first sidewall in some embodiments of this application;

[0054] Figure 11 This is a schematic diagram of the bottom protective plate in some embodiments of this application;

[0055] Figure 12 This is a schematic flowchart illustrating the battery manufacturing method in some embodiments of this application.

[0056] Icons: 101-Box body; 10-Box body; 11-Accommodation cavity; 12-Guide structure; 120-First part; 121-Second part; 13-First bottom wall; 14-First side wall; 140-Main body; 141-Extension; 142-Second mounting hole; 15-Separation part; 16-Reinforcing part; 20-Bottom guard plate; 21-Air inlet; 22-Second bottom wall; 23-Second side wall; 230-Slot; 231-First mounting hole; 24-Connector; 240-Bolt; 241-Spring nut; 25-Support; 250-First support part; 251-Second support part; 30-Airflow channel;

[0057] 100 - Battery; 102 - Battery cell; 103 - Cover;

[0058] 1000 - Vehicle; 300 - Controller; 200 - Motor. Detailed Implementation

[0059] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0061] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0062] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments 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 three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0064] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0065] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0066] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0067] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0068] 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. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0069] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly 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, and the uncoated positive current collector protrudes beyond the coated one, 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 uncoated negative current collector protrudes beyond the coated one, serving as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The separator can be made of PP (polypropylene) or PE (polyethylene), etc.

[0070] Currently, from a market perspective, electric vehicles have become a crucial component of the sustainable development of the automotive industry. Batteries provide energy for the vehicle's operation and the functioning of its various electrical components. For electric vehicles, battery technology is a critical factor in their development. The development of battery technology must consider multiple design factors simultaneously, such as energy density, cycle life, discharge capacity, and charge / discharge rate. Furthermore, battery production costs must also be taken into account. The lower the battery's production cost, the greater its market value.

[0071] The inventors discovered that a separate air-cooling pipe is typically installed inside the battery casing as an air intake channel to cool the individual battery cells and ensure battery safety. However, since the air-cooling pipe needs to be manufactured and assembled separately, this increases the material and assembly costs of the battery, thereby raising the overall manufacturing cost.

[0072] In view of this, in order to reduce the production cost of batteries and ensure battery safety, the inventors, after in-depth research, designed a housing for batteries, including: a housing body, the housing body having multiple accommodating cavities for accommodating individual battery cells; wherein, the accommodating cavities are provided with guiding structures for guiding airflow into the accommodating cavities to cool the individual battery cells.

[0073] Compared to the method of assembling a separate air-cooling pipe in the housing to cool the battery cells, the technical solution of this application embodiment provides an airflow to the housing by setting a guiding structure to cool the battery cells. This saves on the material and assembly costs of the air-cooling pipe while ensuring the cooling effect on the battery cells (i.e., ensuring the safety of the battery), thereby reducing the production cost of the battery.

[0074] The technical solutions described in the embodiments of this application are applicable to batteries and electrical devices that use batteries.

[0075] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be new energy vehicles, including pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0076] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0077] Figure 1 This is a structural schematic diagram of a vehicle 1000 according to some embodiments of this application.

[0078] The vehicle 1000 may house a controller 300, a motor 200, and a battery 100. The controller 300 controls the battery 100 to supply power to the motor 200. For example, the battery 100 may 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, it can serve as the vehicle 1000's operating power source, supplying power to the vehicle 1000's electrical system, such as for the vehicle 1000's starting, navigation, and operational power needs. In another embodiment of this application, the battery 100 can not only serve as the vehicle 1000's operating power source but also as its driving power source, replacing or partially replacing fuel or natural gas to provide driving power to the vehicle 1000.

[0079] Please see Figure 2 , Figure 2 This is an exploded view of battery 100 according to some embodiments of this application.

[0080] The battery 100 includes a battery cell 102, a housing 101, and a cover 103, with the battery cell 102 housed within the housing 101. The housing 101 is used to house the battery cell 102. In some embodiments, the housing 101 includes an opening, and the cover 103 covers the opening to close the battery cell 102. The cover 103 can be plate-shaped or, like the housing 101, a hollow structure with an opening on one side. Of course, the structure formed by the housing 101 and the cover 103 can be of various shapes, such as a cylinder or a cuboid.

[0081] Some embodiments of this application provide a housing 101 for a battery 100. See also... Figures 3-6 , Figure 3 This is a perspective view of the housing 101 in some embodiments of this application. Figure 4 This is an exploded perspective view of the housing 101 and the battery cell 102 in some embodiments of this application. Figure 5 This is a top view of the housing 101 in some embodiments of this application. Figure 6 for Figure 5 Enlarged view at point VI. The housing 101 includes a housing body 10. The housing body 10 has multiple accommodating cavities 11 for accommodating individual battery cells 102. Each accommodating cavity 11 is provided with a guiding structure 12 for guiding airflow into the accommodating cavity 11 to cool the individual battery cells 102.

[0082] The housing body 10 is a component with a receiving cavity 11. In the battery 100, the battery cell 102 is housed in the receiving cavity 11. Generally, each receiving cavity 11 is used to house one battery cell 102. The size of the receiving cavity 11 can correspond to the size of the battery cell 102 so that the battery cell 102 is stably housed in the receiving cavity 11.

[0083] The guiding structure 12 is a structure disposed in the accommodating cavity 11, which is used to guide airflow into the accommodating cavity 11 so that the airflow acts on the battery cell 102 located in the accommodating cavity 11 to cool the battery cell 102.

[0084] Airflow serves as a medium for cooling the battery cell 102. When airflow passes through the battery cell 102, it carries away the heat from the battery cell 102, achieving the effect of cooling the battery cell 102. High temperatures can affect the performance and lifespan of the battery cell 102, and in severe cases, can damage the battery cell 102, rendering it unable to function and compromising the safety of the battery 100. Therefore, cooling the battery cell 102 through airflow, using a wind-cooling method, can ensure the safety of the battery 100.

[0085] Compared to the method of assembling a separate air-cooling pipe in the housing 101 to provide airflow into the accommodating cavity 11 to cool the battery cell 102, the technical solution of this application embodiment provides a guiding structure 12 in the accommodating cavity 11 to provide airflow into the accommodating cavity 11 to cool the battery cell 102. This method can save the material cost and assembly cost of the air-cooling pipe while ensuring the cooling effect of the battery cell 102 (i.e., ensuring the safety of the battery 100), thereby reducing the production cost of the battery 100.

[0086] For some embodiments of this application, please refer to Figure 6 The accommodating cavity 11 is cylindrical, and the guiding structure 12 extends along the axial direction of the accommodating cavity 11.

[0087] The accommodating cavity 11 is cylindrical, which can effectively accommodate cylindrical battery cells, so that the cylindrical battery cells are stably placed inside the housing body 10. The guiding structure 12 extends along the axial direction of the accommodating cavity 11, meaning that the guiding structure 12 can guide airflow to the battery cell 102 in the axial direction of the accommodating cavity 11 (the axial direction of the battery cell 102).

[0088] By making the accommodating cavity 11 cylindrical, the cylindrical battery cell can be stably placed inside the accommodating cavity 11, improving the structural stability of the battery 100. The guiding structure 12 extends along the axial direction of the accommodating cavity 11, allowing airflow to act on the outer circumferential surface of the cylindrical battery cell along the axial direction of the cylindrical battery cell, thereby effectively removing the heat from the cylindrical battery cell and ensuring the cooling effect on the cylindrical battery cell.

[0089] In some embodiments of this application, see Figure 6 Each accommodating cavity 11 is provided with multiple guide structures 12, which are distributed at intervals along the circumference of the accommodating cavity 11.

[0090] The circumferential direction of the accommodating cavity 11 refers to the direction surrounding the axial direction of the accommodating cavity 11. The multiple guide structures 12 are distributed at intervals along the circumferential direction of the accommodating cavity 11, meaning that the multiple guide structures 12 are distributed at intervals around the axial direction of the cylindrical battery cell on the outer peripheral surface of the cylindrical battery 100, so that the airflow acts on different positions on the outer peripheral surface of the cylindrical battery cell.

[0091] Multiple guide structures 12 are provided in the accommodating cavity 11 along the circumference, which can improve the cooling effect on the battery cell 102 and ensure the safety of the battery 100.

[0092] In some embodiments of this application, see Figure 6 The guide structure 12 includes a groove disposed on the inner wall of the receiving cavity 11.

[0093] The inner wall of the receiving cavity 11 faces the battery cell 102 housed in the receiving cavity 11. The groove is a structure provided in the inner wall of the receiving cavity 11, which can be recessed by the inner wall of the receiving cavity 11 so that a gap is formed between the inner wall of the receiving cavity 11 and the outer peripheral surface of the battery cell 102 housed in the receiving cavity 11. Airflow flows through the gap and can then act on the battery cell 102.

[0094] A groove is provided on the inner wall of the accommodating cavity 11 to form a guiding structure 12 that can provide airflow to the battery cell 102, which can effectively reduce the manufacturing cost of the housing 101, and thus reduce the manufacturing cost of the battery 100.

[0095] Alternatively, in other embodiments, the guide structure 12 can be other structures, such as openings in the accommodating cavity 11 to form the guide structure 12, the hole structure formed by the openings being able to guide airflow into the accommodating cavity 11.

[0096] In some embodiments of this application, please refer to Figure 7 , Figure 7 This is a perspective view of the bottom protective plate 20 in some embodiments of this application. Figure 8 This is a cross-sectional view of the housing 101 in some embodiments of this application. The housing 101 also includes a bottom protective plate 20, which is located below and connected to the housing body 10. An airflow channel 30 is formed between the bottom protective plate 20 and the housing body 10, and the airflow channel 30 is connected to the guide structure 12.

[0097] The bottom protective plate 20 is a component that supports the housing body 10 and can absorb impacts from below the housing body 10, thus protecting the housing body 10 and the battery cells 102 housed within it. Simultaneously, the bottom protective plate 20 forms an airflow channel 30. The airflow channel 30 is used to deliver airflow to the guiding structure 12.

[0098] By setting a bottom protective plate 20 under the box body 10, it can support and protect the box body 10 on the one hand, and allow airflow to enter the guide structure 12 through the airflow channel 30 to ensure the cooling effect on the battery cell 102.

[0099] In some embodiments of this application, combined with Figure 3 , Figure 4 as well as Figure 8 The box body 10 includes a first bottom wall 13, a first side wall 14 and a partition 15. The first side wall 14 surrounds the first bottom wall 13. The partition 15 is used to divide the space enclosed by the first side wall 14 and the first bottom wall 13 into a plurality of accommodating cavities 11. The accommodating cavities 11 have openings that are disposed opposite to the first bottom wall 13.

[0100] The first bottom wall 13 is a component for supporting the battery cell 102, and the first side wall 14 is a component surrounding the first bottom wall 13 to form a space with the first bottom wall 13. The partition 15 is a component disposed within the space enclosed by the first side wall 14 and the first bottom wall 13, and the partition 15 divides the space into a plurality of receiving cavities 11, each receiving cavity 11 for accommodating one battery cell 102. The opening of the receiving cavity 11 is a region disposed at one end of the receiving cavity 11 opposite to the first bottom wall 13, and the battery cell 102 can be placed into the receiving cavity 11 through the opening.

[0101] The housing body 10 has a simple structure, is easy to manufacture, and effectively reduces production costs. The partition 15 can effectively divide the space enclosed by the first side wall 14 and the first bottom wall 13 into multiple accommodating cavities 11 to accommodate multiple battery cells 102.

[0102] Optionally, see Figure 5 and Figure 6 The partition 15 may include multiple sub-partitions, with adjacent sub-partitions interconnected. Each sub-partition forms a receiving cavity 11. Each sub-partition includes a first portion 120 and a second portion 121. The first portion 120 includes a first wall, a second wall, and a third wall, with the second and third walls perpendicularly disposed at opposite ends of the first wall. The first, second, and third walls together form a guide structure 12. The four first portions 120 are evenly spaced around the axis of the receiving cavity 11. The cross-section of the second portion 121 is arc-shaped, and the opposite ends of the second portion 121 are respectively connected to the first and second walls of two adjacent first portions 120. The four first portions 120 are connected through the four second portions 121 to form a component capable of accommodating the battery cell 102 and forming the guide structure 12.

[0103] Optionally, the housing body 10 can be integrally formed by injection molding, that is, the first bottom wall 13, the first side wall 14, and the partition 15 can be integrally formed by injection molding. Compared with the housing body 10 being made of aluminum alloy, manufacturing the housing body 10 by injection molding can reduce material costs and weight. Furthermore, the guide structure 12 can be formed during injection molding, effectively improving the manufacturing efficiency of the housing body 10.

[0104] Optionally, in the battery 100, the cover 103 can be connected to the first sidewall 14 by, for example, snap-fit, to close the opening of the accommodating cavity 11, so that the battery cell 102 is in a closed environment for protection.

[0105] In some embodiments of this application, see Figure 8 and Figure 9 , Figure 9This is a bottom view of the housing body 10 in some embodiments of this application. One end of the guide structure 12 penetrates the first bottom wall 13 to communicate with the airflow channel 30.

[0106] exist Figure 8 Arrows indicate the direction of airflow. Figure 9 The reference numeral C indicates one end of the guide structure 12 that penetrates the first bottom wall 13.

[0107] One end of the guide structure 12 is configured to penetrate the first bottom wall 13 so that airflow can enter the guide structure 12 through the airflow channel 30 and exchange heat with the battery cell 102.

[0108] Optionally, when the guide structure 12 is a groove provided on the inner wall of the accommodating cavity 11, the other end of the guide structure 12 can extend to the plane where the opening is located, so that the airflow carrying heat can be discharged from the opening, avoiding the heat in the airflow from affecting the battery cell 102 and ensuring the cooling effect on the battery cell 102. Optionally, when the cover 103 closes the opening of the accommodating cavity 11, in order to ensure that the airflow can carry away the heat, the cover 103 can be provided with a structure that can discharge the airflow.

[0109] For some embodiments of this application, please refer to Figure 9 The first bottom wall 13 has a reinforcing part 16 on the surface opposite to the opening.

[0110] The surface of the first bottom wall 13 facing away from the opening refers to the outer surface of the first bottom wall 13, that is, in the battery 100, the first bottom wall 13 is facing away from the side surface of the battery cell 102. The reinforcing part 16 is a component provided on the first bottom wall 13 to improve the structural strength of the first bottom wall 13.

[0111] By providing a reinforcing part 16 on the surface of the first bottom wall 13 opposite to the opening, the structural strength of the first bottom wall 13 can be improved, the structural stability of the housing body 10 can be improved, the support effect on the battery cell 102 can be improved, the overall structural strength of the battery 100 can be improved, and the safety of the battery 100 can be guaranteed.

[0112] In some embodiments of this application, such as Figure 9 The reinforcing part 16 has honeycomb-shaped reinforcing ribs.

[0113] The honeycomb-shaped reinforcing rib refers to a reinforcing rib provided in the first bottom wall 13, at least a portion of which includes multiple reinforcing structures with hexagonal cross-sections, and these multiple hexagonal reinforcing structures are interconnected. Each hexagonal reinforcing structure includes six reinforcing plates provided in the first bottom wall 13, the six reinforcing plates being connected end-to-end to form a hexagonal structure.

[0114] By setting honeycomb-shaped reinforcing ribs, the structural strength of the first bottom wall 13 can be effectively improved, thereby ensuring the safety of the battery 100.

[0115] In some embodiments of this application, such as Figure 8 The bottom guard plate 20 is provided with an air inlet 21, which is connected to the airflow channel 30.

[0116] The air inlet 21 is a region located on the bottom cover plate 20 and is used to connect the airflow channel 30 with the external environment. The airflow from the external environment can enter the airflow channel 30 of the bottom cover plate 20 through the air inlet 21 to provide airflow to the guide structure 12, i.e. the battery cell 102, thereby cooling the battery cell 102.

[0117] By setting the air inlet 21, the airflow from the external environment can enter the airflow channel 30 through the air inlet 21, thereby guiding the structure 12 to cool the battery cell 102.

[0118] In some embodiments of this application, combined with Figure 7 The bottom guard plate 20 includes a second bottom wall 22 and a second side wall 23. The second side wall 23 surrounds the second bottom wall 22 and is connected to the first side wall 14. An airflow channel 30 is formed between the second bottom wall 22 and the first bottom wall 13.

[0119] The second bottom wall 22 is a component connected to the second side wall 23. The second side wall 23 is a component surrounding the second bottom wall 22 and is also a component connected to the first side wall 14. By connecting to the second bottom wall 22 and the first side wall 14, an airflow channel 30 is formed between the second bottom wall 22 and the first bottom wall 13.

[0120] The bottom guard plate 20 has a simple structure and is easy to manufacture. The second bottom wall 22 is arranged at intervals with the first bottom wall 13 and is surrounded by the first side wall 14 and the second side wall 23, thereby forming an airflow channel 30. Optionally, the bottom guard plate 20 can be integrally molded by injection molding.

[0121] Optionally, such as Figure 7 and Figure 8 As shown, one side of the second bottom wall 22 is not enclosed by the second side wall 23 to form an air inlet 21. The portion of the second bottom wall 22 on the side of the air inlet 21 is inclined. This inclined portion is inclined to the side away from the housing body 10 to increase the opening of the air inlet 21, thereby introducing more airflow into the airflow channel 30 to improve the cooling effect on the battery cell 102.

[0122] For some embodiments of this application, please refer to Figure 10 , Figure 10This is a partial schematic diagram of the second sidewall 23 and the first sidewall 14 in some embodiments of this application. The second sidewall 23 has a slot 230 on its end face facing the housing body 10. The first sidewall 14 includes a main body 140 and an extension 141. The main body 140 extends from the edge of the first bottom wall 13 in a direction away from the bottom guard plate 20, and the extension 141 extends from the edge of the first bottom wall 13 in a direction close to the bottom guard plate 20. The extension 141 is inserted into the slot 230.

[0123] The slot 230 is a recessed structure provided on the end face of the second side wall 23 facing the housing body 10. This recessed structure is used to receive the extension 141 of the first side wall 14, so that the housing 101 can be positioned and supported on the second side wall 23. Optionally, the opening size of the slot 230 can correspond to the size of the extension 141, so that the extension 141 can fit into the slot 230, and a stable insertion relationship is formed between the two.

[0124] The main body 140 is a component that extends from the edge of the first bottom wall 13 and surrounds the first bottom wall 13 to cooperate with the partition 15 to form a plurality of receiving cavities 11. The extension 141 is a component that extends from the edge of the first bottom wall 13 and toward the bottom guard plate 20 to be able to be inserted into the slot 230 and connected to the second side wall 23.

[0125] By setting the slot 230 and the extension 141, the second side wall 23 and the first side wall 14 are connected by a plug-in method, which can reduce the assembly difficulty of the bottom guard plate 20 and the box body 10 and improve the assembly efficiency.

[0126] In some embodiments of this application, such as Figure 10 The second sidewall 23 is provided with a first mounting hole 231, and the extension 141 is provided with a second mounting hole 142. The second sidewall 23 and the extension 141 are connected by a connector 24 passing through the first mounting hole 231 and the second mounting hole 142.

[0127] The first mounting hole 231 is a hole structure provided in the second sidewall 23 and passing through the slot 230. The second mounting hole 142 is a hole structure provided in the first sidewall 14 and communicating with the first mounting hole 231 when the first sidewall 14 is inserted into the slot 230. The connector 24 is a component that passes through the first mounting hole 231 and the second mounting hole 142 to connect the first sidewall 14 and the second sidewall 23. Optionally, the connector 24 may include a screw-in component. For example, the connector 24 may include a bolt 240 and a spring nut 241. The bolt 240 passes through the first mounting hole 231 and the second mounting hole 142 and is connected to the spring nut 241 to securely connect the first sidewall 14 and the second sidewall 23. Optionally, the inner wall of the slot 230 may be provided with a recessed groove, in which the spring nut 241 may be embedded. By positioning and accommodating the recessed groove, the assembly efficiency and quality of the spring nut 241 can be improved, thereby improving the connection efficiency and quality of the first sidewall 14 and the second sidewall 23.

[0128] A first mounting hole 231 is provided on the second sidewall 23, and a second mounting hole 142 is provided on the extension 141, so that the first sidewall 14 and the second sidewall 23 can be connected by the connector 24, thereby improving the connection stability of the first sidewall 14 and the second sidewall 23 and improving the overall structural strength of the battery 100.

[0129] In some embodiments of this application, please refer to Figure 11 , Figure 11 This is a schematic diagram of the bottom protective plate 20 in some embodiments of this application. The bottom protective plate 20 also includes a support member 25, one end of which is connected to the second bottom wall 22, and the other end of which abuts against the first bottom wall 13.

[0130] The support member 25 is a component that is connected to the second bottom wall 22 at one end and abuts against the first bottom wall 13 at the other end. The support member 25 provides support for the first bottom wall 13 to ensure that the box body 10 is stably positioned above the bottom guard plate 20.

[0131] The support member 25 can effectively improve the support effect of the bottom guard plate 20 on the box body 10 and improve the overall structural strength of the battery 100.

[0132] In some embodiments of this application, such as Figure 11 The bottom guard plate 20 includes a plurality of support members 25, which are spaced apart along a first direction. Each support member 25 extends along a second direction perpendicular to the first direction, and the plurality of support members 25 divide the airflow channel 30 into a plurality of sub-channels.

[0133] The bottom guard plate 20 has an opening on one side, and the direction from the opening to the opposite side is a second direction. The first direction is perpendicular to the first direction. Multiple support members 25 are spaced apart along the first direction, which can divide the air inlet 21 into multiple sub-air inlets, and thus divide the airflow channel 30 into multiple sub-channels. Figure 11 In the diagram, arrows labeled "A" indicate the first direction, and arrows labeled "B" indicate the second direction.

[0134] By setting multiple support members 25, the support effect on the housing body 10 can be effectively improved. At the same time, setting multiple support members 25 can divide the airflow channel 30 into multiple sub-channels, so that the airflow flows into the corresponding guide structure 12 through multiple sub-channels, thereby ensuring the cooling effect on each battery cell 102.

[0135] In some embodiments of this application, such as Figure 11 The support member 25 includes a first support portion 250 and a plurality of second support portions 251. The first support portion 250 extends along the second direction and is connected to the second bottom wall 22. The second support portions 251 are arranged intersectingly with the first support portion 250. The plurality of second support portions 251 are distributed at intervals along the second direction.

[0136] The first support portion 250 is a component extending along a second direction, and the second support portion 251 is a component disposed on the first support portion 250 and extending along a first direction perpendicular to the first support portion 250. Each support portion has multiple second support portions 251, which are spaced apart along the second direction to improve the support effect of the support member 25 on the first bottom wall 13. Among the multiple support members 25, the second support portions 251 of adjacent support members 25 are spaced apart to avoid interfering with airflow.

[0137] The support member 25 has a simple structure and is easy to manufacture. By setting the first support part 250 and the second support part 251, the body of the box 10 is supported in both the first and second directions, thereby ensuring the overall structural strength of the battery 100 and the safety of the battery 100.

[0138] Optionally, the bottom cover plate 20 includes a second bottom wall 22, a second side wall 23, and a plurality of support members 25. The second bottom wall 22, the second side wall 23, and the plurality of support members 25 can all be made of plastic. The bottom cover plate 20 can be manufactured in one piece by injection molding process to improve the manufacturing efficiency of the bottom cover plate 20 and reduce the manufacturing cost, thereby improving the production efficiency of the battery 100 and reducing the production cost of the battery 100.

[0139] In some embodiments of this application, a battery 100 is also provided, which includes a battery cell 102 and a housing 101 as described above, wherein the battery cell 102 is housed in a receiving cavity 11.

[0140] In some embodiments of this application, an electrical device is also provided, including the battery 100 described above, which is used to provide electrical energy.

[0141] In some embodiments of this application, such as Figure 12 , Figure 12 This is a flowchart illustrating a method for manufacturing a battery 100 in some embodiments of this application. A method for manufacturing a battery 100 is provided, comprising:

[0142] S1. Provide a housing 101, which includes a housing body 10. The housing body 10 has multiple receiving cavities 11, and the inner wall of the receiving cavity 11 is provided with a guide structure 12.

[0143] S2, Provides battery cell 102;

[0144] S3. The battery cell 102 is placed in the accommodating cavity 11, wherein the guiding structure 12 is used to guide airflow into the accommodating cavity 11 to cool the battery cell 102.

[0145] In some embodiments of this application, a housing 101 is also provided; please refer to [link / reference]. Figures 3-11The housing 101 includes a housing body 10 and a bottom protective plate 20, both manufactured by injection molding. The bottom protective plate 20 is located below the housing body 10 and has an airflow channel 30. The housing body 10 includes a first bottom wall 13, a first side wall 14, and a partition 15. The first side wall 14 surrounds the first bottom wall 13, and the partition 15 divides the space enclosed by the first side wall 14 and the first bottom wall 13 into multiple cylindrical receiving cavities 11. Each receiving cavity 11 has an opening opposite to the first bottom wall 13 and is used to receive a battery cell 102. Four guide structures 12 are spaced around the inner wall of each receiving cavity 11 along its axis. One end of each guide structure 12 extends to the plane of the opening, and the other end of each guide structure 12 penetrates the first bottom wall 13 to communicate with the airflow channel 30 of the bottom protective plate 20. This allows airflow from the airflow channel 30 to be introduced into the guide structure 12 to act on the battery cell 102 within the accommodating cavity 11, thus cooling the battery cell 102. A honeycomb-shaped reinforcing rib is provided on the surface of the first bottom wall 13 opposite to the opening. The bottom protective plate 20 includes a second bottom wall 22, a second side wall 23, and a support member 25. The second side wall 23 surrounds the second bottom wall 22 and is inserted into the first side wall 14 and connected by bolts and spring nuts. An airflow channel 30 is formed between the second bottom wall 22 and the first bottom wall 13. One side of the second bottom wall 22 is not surrounded by the second side wall 23 to form an air inlet 21, which communicates with the airflow channel 30, allowing airflow from the external environment to enter the guide structure 12 through the air inlet 21 and the airflow channel 30. Multiple support members 25 are spaced apart on the second bottom wall 22. Each support member 25 includes a first support portion 250 and multiple second support portions 251. The multiple first support portions 250 are spaced apart along the thickness direction of the first support portion 250, and the multiple second support portions 251 are spaced apart along the length direction of the first support portion 250. Each second support portion 251 and the first support portion 250 are arranged in a cross shape. The end face of each first support portion 250 and each second support portion 251 facing away from the second bottom wall 22 abuts against the first bottom wall 13, improving the support for the housing body 10.

[0146] The above description is merely a preferred embodiment of this application and is 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. A housing for a battery, characterized in that, include: The housing body has multiple accommodating cavities for accommodating individual battery cells. Each accommodating cavity is provided with a guiding structure for guiding airflow into the accommodating cavity to cool the individual battery cells. The housing body includes a first bottom wall, and each accommodating cavity has an opening opposite to the first bottom wall. A reinforcing portion is provided on the surface of the first bottom wall away from the opening. A bottom protective plate is located below and connected to the main body of the housing. An airflow channel is formed between the bottom protective plate and the main body of the housing. The airflow channel is connected to the guide structure. The bottom protective plate is provided with an air inlet, which is connected to the airflow channel. The bottom protective plate includes a second bottom wall and a plurality of supporting members. One end of each supporting member is connected to the second bottom wall, and the other end of each supporting member abuts against the first bottom wall. The plurality of supporting members are spaced apart along a first direction to divide the air inlet into a plurality of sub-air inlets and the airflow channel into a plurality of sub-channels.

2. The housing according to claim 1, characterized in that, The accommodating cavity is cylindrical, and the guiding structure extends along the axial direction of the accommodating cavity.

3. The housing according to claim 2, characterized in that, Each of the accommodating cavities is provided with a plurality of the guide structures, which are distributed at intervals along the circumference of the accommodating cavity.

4. The housing according to claim 1, characterized in that, The guiding structure includes a groove disposed on the inner wall of the accommodating cavity.

5. The housing according to claim 4, characterized in that, The housing body includes a first side wall and a partition. The first side wall surrounds the first bottom wall, and the partition is used to divide the space enclosed by the first side wall and the first bottom wall into the plurality of accommodating cavities.

6. The housing according to claim 5, characterized in that, One end of the guide structure penetrates the first bottom wall to communicate with the airflow channel.

7. The housing according to claim 1, characterized in that, The reinforcing part is a honeycomb-shaped reinforcing rib.

8. The housing according to claim 5, characterized in that, The bottom protective plate includes a second sidewall, which surrounds the second bottom wall and is connected to the first sidewall. The airflow channel is formed between the second bottom wall and the first bottom wall.

9. The housing according to claim 8, characterized in that, The second sidewall has a slot on the end face facing the box body. The first sidewall includes a main body and an extension. The main body extends from the edge of the first bottom wall away from the bottom guard plate, and the extension extends from the edge of the first bottom wall towards the bottom guard plate. The extension is inserted into the slot.

10. The housing according to claim 9, characterized in that, The second sidewall is provided with a first mounting hole, and the extension is provided with a second mounting hole. The second sidewall and the extension are connected by a connector passing through the first mounting hole and the second mounting hole.

11. The housing according to claim 1, characterized in that, The support member includes a first support portion and a plurality of second support portions. The first support portion extends along a second direction and is connected to the second bottom wall. The second support portions are arranged intersectingly with the first support portion. The plurality of second support portions are distributed at intervals along the second direction.

12. A battery, characterized in that, include: Battery cell; as well as The housing according to any one of claims 1-11, wherein the battery cell is housed in the accommodating cavity.

13. An electrical appliance, characterized in that, Includes the battery of claim 12, the battery being used to provide electrical energy.

14. A method for manufacturing a battery, characterized in that, The method includes: A housing is provided, comprising a housing body and a bottom protective plate. The housing body has multiple accommodating cavities, and the inner walls of the accommodating cavities are provided with guiding structures. The housing body includes a first bottom wall, and the accommodating cavities have openings opposite to the first bottom wall. The surface of the first bottom wall facing away from the opening is provided with a reinforcing portion. The bottom protective plate is located below the housing body and connected to the housing body. An airflow channel is formed between the bottom protective plate and the housing body, and the airflow channel communicates with the guiding structures. The bottom protective plate is provided with an air inlet, and the air inlet communicates with the airflow channel. The bottom protective plate includes a second bottom wall and multiple supporting members. One end of each supporting member is connected to the second bottom wall, and the other end of each supporting member abuts against the first bottom wall. The multiple supporting members are spaced apart along a first direction to divide the air inlet into multiple sub-air inlets and the airflow channel into multiple sub-channels. Provide battery cells; The battery cell is placed in the accommodating cavity, wherein the guiding structure is used to guide airflow into the accommodating cavity to cool the battery cell.

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