Cabinet, battery and electric device

Abstract

The application relates to a box, a battery and a power utilization device. The box comprises a box body, a containing cavity for containing a battery monomer, the containing cavity comprising two openings opposite to each other; and a thermal management component covering at least one opening and welded to the box body, and the thermal management component is used for adjusting the temperature of the battery monomer. The box provided by the embodiment of the application aims to improve the connection strength and sealing performance between the box body and the thermal management component.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a housing, battery, and electrical device. Background Technology

[0002] Rechargeable batteries have advantages such as small size, high energy density, high safety, low self-discharge, and long lifespan, and are widely used in energy storage, communications, electric vehicles, aerospace, and other fields. A battery consists of multiple cells connected in series, parallel, or a combination thereof.

[0003] The battery casing is designed to be sealed to prevent external substances such as water from entering and corroding the individual battery cells. However, defects in the internal connection structure of the casing can lead to insufficient sealing, which in turn affects battery life. Summary of the Invention

[0004] This application provides a housing, a battery, and an electrical device, aiming to solve the problem of insufficient sealing of the housing.

[0005] On one hand, according to an embodiment of this application, a housing is provided, including a housing body and a thermal management component, wherein the housing body has a receiving cavity for accommodating a battery cell, the receiving cavity includes two openings opposite to each other, the thermal management component covers at least one opening and is welded to the housing body, and the thermal management component is used to regulate the temperature of the battery cell.

[0006] According to the enclosure provided in the embodiments of this application, the thermal management component is covered by at least one opening and welded to the enclosure body. The thermal management component and the enclosure body are connected by welding, which can improve the connection strength between the thermal management component and the enclosure body and has better sealing reliability than the prior art.

[0007] According to one embodiment of this application, the thermal management component includes an edge portion parallel to its own outer contour, and the thermal management component is welded to the housing body through the edge portion.

[0008] In the above embodiments, the thermal management component is welded to the housing body through the edge portion, which reduces the welding surface while ensuring sealing performance and improving the installation efficiency of the thermal management component.

[0009] According to one embodiment of this application, the thermal management component further includes a central portion connected to an edge portion, and the central portion is configured to be surrounded by the edge portion; a plurality of partitions connected to the housing body are disposed in the receiving cavity, the plurality of partitions are connected to the central portion, and the plurality of partitions divide the receiving cavity into a plurality of sub-cavities, each of which is used to receive a battery cell.

[0010] In the above embodiments, multiple partitions are used to connect with the box body, which increases the structural stability of the box body. At the same time, the partitions are used to connect with the central part, which improves the overall connection strength of the box body and makes the overall structure more stable.

[0011] According to one embodiment of this application, the partition is welded to the center portion.

[0012] In the above embodiments, the welding connection method provides better airtightness and connection strength, thereby enhancing the connection strength and airtightness between the thermal management component and the partition.

[0013] According to one embodiment of this application, the partition is bonded to the center portion.

[0014] In the above embodiments, since the bonding connection method is more convenient, the installation efficiency of the thermal management component and the partition is improved while ensuring the airtightness between the thermal management component and the partition.

[0015] According to one embodiment of this application, the housing includes fasteners that pass through and securely connect the partition and the center portion.

[0016] In the above embodiments, the fasteners can further enhance the connection strength between the thermal management component and the partition.

[0017] According to one embodiment of this application, the box body includes a main body portion and a recessed portion. The main body portion includes a first surface facing away from the battery cell. The recessed portion is formed by the box body being recessed relative to the first surface in a direction facing the battery cell. The recessed portion is disposed opposite to the end of the main body portion near the thermal management member. At least a portion of the thermal management member is embedded in the recessed portion.

[0018] In the above embodiments, by providing a recessed portion and defining at least a portion of the thermal management component as embedded in the recessed portion, that is, by providing a mating structure in the main body that matches the thermal management component, the thermal management component can be positioned for welding by embedding it in the recessed portion before welding the thermal management component to the box body, thereby ensuring the smooth progress of the welding process.

[0019] According to one embodiment of this application, the thermal management component includes a second surface facing away from the battery cell, the second surface being flush with the first surface.

[0020] In the above embodiments, the second surface is flush with the first surface, which can reduce the thickness of the housing and make the structure of the housing smaller. In this way, after the housing is assembled with battery cells to form a battery, it can save the assembly space of the battery in the power-consuming device.

[0021] According to one embodiment of this application, the box body further includes a protrusion formed by the box body protruding relative to the first surface in a direction away from the battery cell.

[0022] In the above embodiments, by providing a protrusion formed by the box body protruding from the first surface in a direction away from the battery cell, the protrusion can increase the thickness of the box body, thereby increasing the structural strength of the box body.

[0023] According to one embodiment of this application, the thermal management component includes a first connector and a second connector disposed opposite to the first connector. The first connector covers the opening, and the second connector is located on the side of the first connector away from the battery cell. The second connector and the first connector enclose to form a flow channel, which is used to dispose of a heat exchange medium to regulate the temperature of the battery cell.

[0024] In the above embodiments, the first connector and the second connector together enclose a flow channel, and a heat exchange medium is provided in the flow channel. The heat exchange medium can be used to heat up or cool down the battery cells to ensure the normal operation of the battery and avoid thermal runaway, thus improving safety performance.

[0025] In another aspect, this application provides a battery that includes a battery cell and a housing as described in any of the above embodiments, wherein the battery cell is disposed within the housing.

[0026] In another aspect, this application provides an electrical device that includes a battery as described in the above embodiments. The battery is used to provide electrical energy. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0028] Figure 1 This is a partial structural schematic diagram of a vehicle according to an embodiment of this application;

[0029] Figure 2 This is an exploded structural diagram of a battery according to an embodiment of this application;

[0030] Figure 3 yes Figure 2 The diagram shows the structure of the battery module of the battery shown.

[0031] Figure 4 This is a partially exploded structural diagram of the box body according to an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the combined structure of the box body and the partition of a box according to an embodiment of this application;

[0033] Figure 6 yes Figure 5 The diagram shown is an enlarged view of the box at point A.

[0034] Figure 7 This is a schematic diagram of the combined structure of the housing body and the thermal management component of an embodiment of this application;

[0035] Figure 8 yes Figure 7 The box shown is a cross-sectional view taken along line BB;

[0036] Figure 9 yes Figure 7 Another sectional view of the box shown along line BB.

[0037] The accompanying drawings are not necessarily drawn to scale.

[0038] The following are the labeling elements in the figure:

[0039] 1. Vehicle; 1000. Battery; 1b. Controller; 1a. Motor; 200. Individual Battery Cell; 201. Battery Module;

[0040] 100. Housing; 101. Bottom shell; 102. Top shell;

[0041] 110. Box body; 111. Main body; 1111. First surface; 112. Recess; 113. Protrusion; 103. Receiving cavity; 1031. Sub-cavity; 104. Opening;

[0042] 120. Thermal management component; 121. Edge portion; 122. Center portion; 123. Second surface; 124. First connector; 125. Second connector;

[0043] 130. Partition;

[0044] 140. Fasteners. Detailed Implementation

[0045] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0047] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] 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 to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, cuboid / square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0049] 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.

[0050] The inventors discovered that due to the complex operating environment of batteries and the potential for overheating during charging and discharging, thermal management components are typically required to regulate the temperature of the individual battery cells. When assembling these components into the battery, they are usually connected to internal components of the battery casing. However, the connection strength and sealing between the thermal management components and these internal components are often poor, thus affecting the structural stability of the battery.

[0051] Based on the problems discovered by the inventors, the inventors improved the structure of the housing. The technical solutions described in the embodiments of this application are applicable to the housing, the battery containing the housing, and the electrical device using the battery.

[0052] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. 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 devices.

[0053] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0054] Figure 1 This is a partial structural schematic diagram of a vehicle according to an embodiment of this application.

[0055] like Figure 1 As shown, a battery 1000 is installed inside the vehicle 1. The battery 1000 can be located at the bottom, front, or rear of the vehicle 1. The battery 1000 can be used to power the vehicle 1; for example, the battery 1000 can serve as the operating power source for the vehicle 1.

[0056] Vehicle 1 may also include controller 1b and motor 1a. Controller 1b is used to control battery 1000 to power motor 1a, for example, for the power needs of vehicle 1 during start-up, navigation and driving.

[0057] In some embodiments of this application, the battery 1000 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0058] Figure 2 This is an exploded structural diagram of a battery according to an embodiment of this application; Figure 3 yes Figure 2 The diagram shows the structure of the battery module.

[0059] like Figure 2 as well as Figure 3 As shown, the battery 1000 includes a battery cell 200. The battery 1000 may also include a housing 100 for accommodating the battery cell 200.

[0060] The housing 100 is used to house the battery cells 200, and the housing 100 can have various structural forms.

[0061] In some embodiments, the housing 100 may include a bottom shell 101, a top shell 102, a housing body 110, and a thermal management component 120. The bottom shell 101, housing body 110, and top shell 102 are connected in sequence. The housing body 110 defines a receiving cavity 103 for accommodating a battery cell 200. The bottom shell 101 and top shell 102 may both be hollow structures with openings on one side, or they may be flat structures, depending on actual structural requirements. When both the bottom shell 101 and top shell 102 are hollow structures with openings on one side, the open side of the bottom shell 101 is connected to one end of the housing body 110, and the open side of the top shell 102 is connected to the other end of the housing body 110.

[0062] In practical applications, the box body 110 can be integrally formed with the bottom shell 101 or the top shell 102. Of course, the box body 110 can also be a component independent of the bottom shell 101 and the top shell 102.

[0063] The bottom shell 101, the main body 110, and the top shell 102 can be of various shapes, such as cylinders, cuboids, etc. Figure 2 In this example, the bottom shell 101, the box body 110, and the top shell 102 are all cuboid structures.

[0064] In battery 1000, there can be one or more battery cells 200. If there are multiple battery cells 200, they can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 200 are connected in both series and parallel. Multiple battery cells 200 can be directly connected in series, parallel, or in a mixed configuration and then housed in a casing. Alternatively, multiple battery cells 200 can first be connected in series, parallel, or in a mixed configuration to form a battery module 201. Multiple battery modules 201 can then be connected in series, parallel, or in a mixed configuration to form a whole and housed in a casing.

[0065] In some embodiments, such as Figure 3 As shown, in battery 1000, there are multiple battery cells 200. Multiple battery cells 200 are first connected in series, parallel, or in a mixed manner to form battery module 201. Multiple battery modules 201 are then connected in series, parallel, or in a mixed manner to form a whole, which is housed in a casing.

[0066] In some embodiments, the multiple battery cells 200 in the battery module 201 can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of the multiple battery cells 200 in the battery module 201.

[0067] Figure 4This is a partially exploded structural diagram of the box body according to an embodiment of this application.

[0068] like Figure 4 As shown, the housing 100 includes a housing body 110 and a thermal management component 120. The housing body 110 has a receiving cavity 103 for accommodating battery cells, and the receiving cavity 103 includes two openings 104 opposite to each other. The thermal management component 120 covers at least one opening 104 and is welded to the housing body 110, and the thermal management component 120 is used to regulate the temperature of the battery cells.

[0069] The box body 110 can be a frame structure component, and the cross-sectional shape of the outer contour of the box body 110 can be rectangular, triangular, circular, etc., which is adapted to the cross-sectional shape of the aforementioned bottom shell and top shell.

[0070] The body of the enclosure 110 can be made of low-carbon steel, low-alloy steel, or stainless steel to achieve good welding performance. Alternatively, the body of the enclosure 110 can be made of aluminum to reduce the weight of the enclosure 100.

[0071] The box body 110 is the main component of the box 100, including a receiving cavity 103 with two openings 104 facing each other.

[0072] Optionally, the housing body 110 can be connected to the bottom shell and the top shell. In other words, the bottom shell can directly or indirectly cover one opening of the receiving cavity 103, and the top shell can directly or indirectly cover the other opening of the receiving cavity 103. When indirectly covered, a heat management component 120 can be provided between the bottom shell and the housing body 110. Of course, a heat management component 120 can also be provided between the top shell and the housing body 110.

[0073] The box body 110 can be connected to the bottom shell and / or top shell by means such as blind riveting, rivet, FDS, screwing, or gluing; the box body 110 can also be directly integrally formed with the bottom shell and / or top shell.

[0074] For example, the bottom shell and the top shell respectively cover the two openings 104 of the box body 110. The box body 110, the bottom shell and the top shell together enclose a receiving space for accommodating the battery cell. The thermal management component 120 covers the opening 104 of the box body 110 near the bottom shell. At this time, the thermal management component 120 can separate the battery cell from the bottom shell and reduce the influence of the external temperature on the battery cell.

[0075] Optionally, the height of the receiving cavity 103 may be less than the height of the battery cell along the direction from one opening 104 to the other opening 104. In this case, in order to fully accommodate the battery cell, the peripheral portion of the bottom shell or top shell may be bent toward the housing body 110 so that the battery cell can be fully accommodated.

[0076] The opening 104 of the housing body 110 can be square, rectangular, rhomboid, circular, etc., and can be flexibly adjusted according to the shape of the battery cell. For example, if the battery cell is cylindrical, the opening 104 can be circular. Or if the battery cell is cuboid, the opening 104 can be rectangular.

[0077] The thermal management component 120 is connected to the housing body 110 and is used to regulate the temperature of the individual battery cells. The welding method between the thermal management component 120 and the housing body 110 can be friction stir welding, arc welding, laser welding, etc., and is not limited here. This welding connection method can tightly connect the thermal management component 120 and the housing body 110, thereby strengthening the overall structure of the housing 100 and increasing its airtightness.

[0078] The thermal management component 120 can be configured as a plate structure, a tubular structure, or other forms, and can be flexibly configured according to production requirements.

[0079] For example, during the charging and discharging process of a single battery cell, the battery cell may generate a large amount of heat. To reduce the risk of thermal runaway, a low-temperature medium can be placed inside the thermal management component 120, and the thermal management component 120 can exchange heat with the battery cell to remove the accumulated heat in the battery cell in a timely manner, thereby reducing the temperature of the battery cell. When the ambient temperature of the housing 100 is low, in order to ensure the normal operation of the battery cell, a high-temperature medium can be placed inside the thermal management component 120, and the thermal management component 120 can exchange heat with the battery cell to appropriately increase the temperature of the battery cell and ensure its normal operation.

[0080] The enclosure 100 provided in this application embodiment is connected to the enclosure body 110 by welding. The connection strength between the thermal management component 120 and the enclosure body 110 is improved. Since the thermal management component 120 and the enclosure body 110 are connected as one unit by welding, the sealing performance between the two can also be significantly improved.

[0081] Compared to the existing technology that uses FDS for connection, the connection strength and sealing reliability between the thermal management component 120 and the housing body 110 are better. At the same time, the welding connection method can eliminate the need for sealant, gasket, FDS, and adhesive application to the FDS head, simplifying the production process and reducing the overall production cost.

[0082] Please continue reading. Figure 4 In some embodiments, the thermal management component 120 includes an edge portion 121 parallel to its own outer contour, and the thermal management component 120 is welded to the housing body 110 through the edge portion 121.

[0083] The edge portion 121 can be a ring-shaped structure and adapted to the box body 110. For example, when the box body 110 is cuboid in shape, the edge portion 121 can be a ring-shaped structure with a rectangular cross-section; when the box body 110 is cylindrical, the edge portion 121 can be a ring-shaped structure with a circular cross-section.

[0084] In this embodiment, a welding area can be pre-reserved on the edge of the housing body 110, and the shape of the welding area matches the edge shape of the thermal management component 120.

[0085] Before the welding process, the heat management component 120 can be positioned in the welding area to ensure that the relative position between the heat management component 120 and the box body 110 is accurate. Figure 4 The shape of the weld 105 formed by welding the edge portion 121 of the thermal management component 120 and the box body 110 is shown.

[0086] Please continue reading. Figure 4 In some embodiments, the thermal management component 120 further includes a central portion 122 connected to the edge portion 121, and the central portion 122 is configured to be surrounded by the edge portion 121; the receiving cavity 103 is provided with a plurality of partitions 130 connected to the box body 110, the plurality of partitions 130 are connected to the central portion 122, and the plurality of partitions 130 divide the receiving cavity 103 into a plurality of sub-cavities 1031, each of which is used to receive a battery cell.

[0087] In this embodiment, the partition 130 can improve the strength of the box body 110. At the same time, the two ends of the partition 130 are connected to the inner side of the box body 110 to divide the receiving cavity 103 into multiple sub-cavities 1031, so that different battery cells can be placed in different sub-cavities 1031 respectively.

[0088] It is understandable that the shape of the separator 130 can be set according to the structure of the battery cell so that the battery cell can make full use of the space of the sub-cavity 1031, thereby improving the energy density of the battery.

[0089] For example, when the battery cell is cuboid, the separator 130 can be elongated, and the receiving cavity 103 can be divided into multiple sub-cavities 1031 with a rectangular cross-section by multiple separators 130.

[0090] At this time, the partition 130 can be arranged along the length of the housing 100. Of course, the partition 130 can also be arranged along the width of the housing 100. Alternatively, the partition 130 can be arranged along both the length and width of the housing 100, so that multiple partitions 130 are arranged crosswise in the receiving cavity 103, dividing the receiving cavity 103 into multiple sub-cavities 1031, and different battery cells are placed in each sub-cavity 1031.

[0091] When the battery cell is cylindrical, the separator 130 can be curved, and multiple separators 130 can be used to divide the receiving cavity 103 into multiple sub-cavities 1031 with circular cross-sections to accommodate the battery cell.

[0092] Optionally, after the battery cells are installed, in order to prevent the battery cells from colliding with the separator 130 under external force, buffers can be provided on both side walls of each separator 130 and the inner side wall of the box body 110. The buffers can buffer the battery cells and the separator 130, reducing the risk of damage to the battery cells.

[0093] For example, the cushioning component can be a sponge component, a plastic component, a rubber component, etc., and is not limited thereto.

[0094] In some embodiments, the partition 130 and the central portion 122 may be connected by welding.

[0095] In this embodiment, the edge portion 121 is connected to the box body 110, and the center portion 122 is connected to the partition plate 130 by welding. That is, the thermal management component 120 is connected to the box body 110 and the partition plate 130 by welding. This makes the structural strength of the box 100 higher. At the same time, the welding connection method can enhance the continuity of the box 100 during production.

[0096] In some embodiments, the partition 130 and the center portion 122 may also be connected by adhesive bonding.

[0097] In this embodiment, the bonding method is simple, fast, efficient, and has high airtightness.

[0098] For example, during the production process of the housing 100, the partition 130 can be connected to the housing body 110 first. Before welding the thermal management component 120 to the housing body 110, the partition 130 can be bonded to the center portion 122 to provide positioning for the welding of the thermal management component 120. Alternatively, the thermal management component 120 can be welded to the housing body 110 first, and then the bonding step of the partition 130 and the center portion 122 can be performed.

[0099] In some embodiments, the housing 100 includes a fastener 140, which passes through and securely connects the partition 130 and the center portion 122. It should be noted that in this embodiment, the fastener 140 can be a double-layer rivet nut or an FDS (Flash Dip). This allows for convenient and quick maintenance by replacing the fastener 140 during subsequent repairs.

[0100] Figure 5Figure 6 is a schematic diagram of the combined structure of the box body and the partition of a box according to an embodiment of this application; Figure 6 is... Figure 5 The diagram shown is an enlarged view of the box at point A. Figure 7 This is a schematic diagram of the combined structure of the housing body and the thermal management component of an embodiment of this application; Figure 8 yes Figure 7 The box shown is a cross-sectional view along line BB.

[0101] like Figures 5 to 8 As shown, in some embodiments, the housing body 110 includes a main body portion 111 and a recessed portion 112. The main body portion 111 includes a first surface 1111 facing away from the battery cell. The recessed portion 112 is formed by the housing body 110 being recessed relative to the first surface 1111 in a direction facing the battery cell. The recessed portion 112 is disposed opposite to the end of the main body portion 111 near the thermal management member 120, and at least a portion of the thermal management member 120 is embedded in the recessed portion 112.

[0102] In this embodiment, when the main body 111 is connected to the thermal management component 120, the recess 112 can further position the thermal management component 120. Before the welding process, at least a portion of the thermal management component 120 can be directly embedded into the recess 112 to position the thermal management component 120, restricting the movement of the thermal management component 120 in the length and / or width direction of the housing, thereby further ensuring the stability of the welding.

[0103] Please continue reading. Figures 5 to 8 In some embodiments, the thermal management component 120 includes a second surface 123 facing away from the battery cell, the second surface 123 being flush with the first surface 1111.

[0104] In this embodiment, by defining the second surface 123 as flush with the first surface 1111, the overall thickness of the housing body 110 and the thermal management component 120 in the housing can be reduced, thereby reducing the overall space occupied by the housing body 110 and the thermal management component 120, providing more space for the installation of other components, such as battery cells, thereby improving the energy density of the battery.

[0105] Figure 9 yes Figure 7 Another sectional view of the box shown along line BB.

[0106] like Figure 9 As shown, in some embodiments, the housing body 110 further includes a protrusion 113, which is formed by the housing body 110 protruding relative to the first surface 1111 in a direction away from the battery cell.

[0107] In this embodiment, the protrusion 113 can be used to support the main body 111 and increase the thickness of the box body 110, thereby improving the strength of the box body 110.

[0108] Optionally, the protrusion 113 is provided on the portion of the housing body 110 near the thermal management component. In this embodiment, the protrusion 113 can increase the thickness at the connection between the housing body 110 and the thermal management component 120, thereby increasing the stability of its structure.

[0109] In some embodiments, when the housing body 110 is provided with a protrusion 113, the second surface of the thermal management component 120 may be flush with the first surface 1111. This effectively elevates and suspends the thermal management component 120 through the protrusion 113, allowing it to be completely contained within the recess. In this case, the side of the thermal management component 120 furthest from the battery cell is in contact with air, reducing heat exchange between the heat exchange medium and the outside environment, thereby ensuring the stability of the temperature of the heat exchange medium within the thermal management component 120.

[0110] Please continue reading. Figure 9 In some embodiments, the thermal management component 120 includes a first connector 124 and a second connector 125 disposed opposite to the first connector 124. The first connector 124 covers the opening, and the second connector 125 is located on the side of the first connector 124 opposite to the battery cell. The second connector 125 and the first connector 124 together form a flow channel (not shown in the figure), which is used to disseminate a heat exchange medium for temperature regulation of the battery cell.

[0111] The first connector 124 and the second connector 125 can be fixed together by means of bonding, welding or other methods, or they can be directly molded as a single piece.

[0112] It should be noted that the edge of the aforementioned thermal management structure 120 may be formed by the portion of the first connector 124 near the housing body 110 and the portion of the second connector 125 near the housing body 110.

[0113] The flow channel can be formed by the surface of the first connector 124 near the second connector 125 being recessed in a direction away from the second connector 125; it can also be formed by the surface of the second connector 125 near the first connector 124 being recessed in a direction away from the first connector 124; or it can be formed simultaneously by the opposing surfaces of the first connector 124 and the second connector 125 in opposite directions. Of course, the flow channel can also be formed by providing a pipe between the first connector 124 and the second connector 125.

[0114] The cross-sectional shape of the flow channel can be circular, rectangular, etc., and is not limited here. The cross-sectional shape of the flow channel should cover the thermal management component 120 so that the battery cells at different locations can exchange heat.

[0115] In some embodiments, to further improve the heat exchange effect of the thermal management component 120 on the battery cell, the thickness of the first connector 124 can be made thinner than the thickness of the second connector 125. Thus, regardless of which connection method is used for the first connector 124 and the second connector 125, the flow channel can be positioned closer to the battery cell, and the thicker second connector 125 can, to a certain extent, prevent the heat exchange medium within the flow channel from exchanging heat with the outside, thereby improving the heat exchange effect of the thermal management component 120 on the battery cell.

[0116] As a specific embodiment of this application, please refer to the following for details. Figures 4 to 9 This application provides a housing 100, which includes a housing body 110 and a thermal management component 120. The housing body 110 has a receiving cavity 103 for accommodating individual battery cells. The receiving cavity 103 includes two openings 104 that are opposite to each other. The thermal management component 120 covers one of the openings 104 and is welded to the housing body 110. The thermal management component 120 is used to regulate the temperature of the individual battery cells.

[0117] Meanwhile, the thermal management component 120 includes an edge portion 121 parallel to its own outer contour and a central portion 122 connected to the edge portion 121. In this embodiment, the edge portion 121 is welded to the housing body 110, and the central portion 122 is connected to the housing body 110 by a double-layer rivet nut. This improves the sealing performance of the housing 100, simplifies the manufacturing process, and reduces the overall production cost.

[0118] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A box, characterized in that, The enclosure includes: The housing body has a receiving cavity for accommodating individual battery cells, the receiving cavity including two openings opposite each other; and A thermal management component, which covers at least one of the openings and is welded to the housing body, is used to regulate the temperature of the battery cells; The housing body includes a main body and a recessed portion, the main body including a first surface facing away from the battery cell; and The recessed portion is formed by the recess of the casing body relative to the first surface in the direction facing the battery cell, and the recessed portion is disposed opposite to the end of the main body near the thermal management member, and at least a portion of the thermal management member is embedded in the recessed portion.

2. The housing according to claim 1, characterized in that, The thermal management component includes an edge portion parallel to its own external contour, and the thermal management component is welded to the housing body through the edge portion.

3. The housing according to claim 2, characterized in that, The thermal management component further includes a central portion connected to the edge portion, and the central portion is configured to be surrounded by the edge portion; The cavity is provided with multiple partitions connected to the main body of the box. The multiple partitions are connected to the central part and divide the cavity into multiple sub-cavities, each of which is used to accommodate the battery cell.

4. The housing according to claim 3, characterized in that, The partition is welded to the central portion; or The partition is bonded to the central portion; or The housing includes fasteners that pass through and securely connect the partition and the central portion.

5. The housing according to claim 1, characterized in that, The thermal management component includes a second surface facing away from the battery cell, the second surface being flush with the first surface.

6. The housing according to claim 1, characterized in that, The casing body also includes a protrusion, which is formed by the casing body protruding from the first surface in a direction away from the battery cell.

7. The housing according to any one of claims 1 to 6, characterized in that, The thermal management component includes: A first connector, covering the opening; and A second connector is disposed opposite to the first connector and is located on the side of the first connector away from the battery cell. The second connector and the first connector enclose each other to form a flow channel, which is used to provide a heat exchange medium to regulate the temperature of the battery cell.

8. A battery, characterized in that, include: The housing as described in any one of claims 1 to 7; as well as The battery cells are housed within the casing.

9. An electrical device, characterized in that, Includes the battery as described in claim 8, the battery being used to provide electrical energy.

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