Battery, box body and electric device

Abstract

The invention is suitable for the technical field of batteries, and provides a battery, a battery box body and electric equipment, the battery comprises a box body and a battery monomer, the box body comprises a bottom plate and an enclosure bulkhead, and the bottom plate and the enclosure bulkhead define a containing cavity; the battery monomers are mounted in the accommodating cavities; and the enclosure bulkhead and the bottom plate are riveted and fixed through a riveting piece. According to the battery provided by the invention, the sealing performance of the box body is better, and the reliability of the battery is higher.

Description

Technical Field

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

[0002] With people's growing environmental awareness and the rapid rise of the new energy industry, there is a vast space for the application and development of batteries.

[0003] In related technologies, the battery casing has poor sealing performance, which leads to poor battery reliability. Summary of the Invention

[0004] The purpose of this application is to provide a battery, a housing, and an electrical device that can improve the sealing performance of the housing, thereby enhancing the reliability of the battery.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, a battery is provided, comprising:

[0007] The enclosure includes a bottom plate and walls, which together form a receiving cavity.

[0008] The battery cell is installed inside the accommodating cavity;

[0009] The base plate and the enclosure are riveted together and fixed by the riveting components.

[0010] In the battery of this application embodiment, since the bottom plate and the surrounding wall of the box are riveted together, no drilling is required in the riveting process, and the riveting parts do not completely penetrate the stacked structure formed by the bottom plate and the surrounding wall. That is, the inside and outside of the box with the riveting parts are not connected due to the installation of the riveting parts, thereby making the sealing performance of the box better. This can reduce or prevent impurities or liquids outside the box from entering the internal cavity of the box to a certain extent, thus improving the reliability of the battery.

[0011] In one possible design, the enclosure has a first opening, the receiving cavity communicates with the first opening, and the bottom plate and the surrounding wall are connected by riveting members in a position opposite to the first opening in a first direction.

[0012] In this configuration, the base plate and the enclosure are connected by a riveting component at a position opposite to the first opening in the first direction. That is, in the riveting area, one side of the box body is on the outside of the box body, and the other side is opposite to the first opening. The operating space on both sides is relatively large, which facilitates the riveting operation.

[0013] In one possible design, the enclosure includes a barrier section and a first flange, the barrier section being disposed at one end of the first flange and intersecting with the first flange, and the first flange being connected to the base plate by a riveting member.

[0014] In this configuration, the first flange increases the overlap area between the enclosure and the base plate in the thickness direction, thereby increasing the area of ​​the enclosure and the base plate for assembling riveted parts and facilitating riveting operations.

[0015] In one possible design, the enclosure section and the first flange are integrally formed.

[0016] In this configuration, since the first flange and the enclosure are integrally formed, the sealing performance between the first flange and the enclosure is good and the structural strength is high.

[0017] In one possible design, at least a portion of the first flange is opposite to the battery cell in a first direction to support the battery cell.

[0018] In this configuration, a portion of the first flange faces the battery cell, providing a certain degree of support for the battery cell.

[0019] In one possible design, the first flange has a first recess, and the portion of the riveting is located within the first recess.

[0020] In this configuration, since the first flange has a first recess, it can accommodate the protrusion formed by the stamping of the rivet, thereby reducing the distance from the protrusion to the plane where the inner wall surface of the first flange is located.

[0021] In one possible design, the first flange has a first thickness region and a second thickness region, the thickness of the first thickness region is greater than the thickness of the second thickness region, the enclosure part is connected to the first thickness region, the second thickness region is connected to the end of the first thickness region away from the enclosure part, and the end face of the first thickness region away from the enclosure part is connected to the surface of the second thickness region near the receiving cavity to form a first recess.

[0022] In this configuration, the first recess is formed by the thickness difference between the first thickness region and the second thickness region, which facilitates the production and manufacturing of the first recess.

[0023] In one possible design, both the enclosure and the first flange are plate-like structures.

[0024] In this configuration, the weight of the enclosure is relatively smaller.

[0025] In one possible design, the base plate includes a first plate and a second plate. The first plate is connected to the side of the second plate near the accommodating cavity. The first plate and the second plate are connected, and a heat exchange channel is formed between the first plate and the second plate. The first plate and the first flange are connected by a riveting member.

[0026] In this configuration, a heat exchange channel is formed inside the base plate, which increases the heat exchange efficiency for individual battery cells.

[0027] In one possible design, the first plate includes a connecting part and a supporting part. The connecting part is connected to the outer peripheral edge of the supporting part, and the connecting part is connected to the first flange by a riveting member. The surface of the supporting part near the receiving cavity is flush with the surface of the first flange near the receiving cavity.

[0028] In this configuration, the surface of the support near the accommodating cavity is flush with the surface of the first flange near the accommodating cavity, so that the inner wall surface of the support and the inner wall surface of the first flange together provide support for the battery cell, increasing the contact area between the casing and the battery cell.

[0029] In one possible design, the first plate also includes a transition portion, the connecting portion and the supporting portion are connected through the transition portion, the transition portion and the supporting portion are connected to form a second recess, and at least a portion of the second plate is located in the second recess.

[0030] In this configuration, the structure of the first and second plates is more compact and occupies less space.

[0031] In one possible design, a sealant is provided between the base plate and the enclosure, with the sealant applied at least to the outer perimeter of the riveted parts.

[0032] In this configuration, on the one hand, the sealant acts as a sealant around the riveted parts; on the other hand, the sealant improves the connection strength between the base plate and the enclosure.

[0033] In one possible design, the battery also includes a cover that is connected to the housing and seals the first opening. The enclosure also includes a second flange that is located at the other end of the enclosure, and the cover is connected to the second flange.

[0034] In this configuration, the second flange adds a connection area between the enclosure and the cover, facilitating the connection between the enclosure and the cover.

[0035] In one possible design, the second flange and the enclosure are an integral structure.

[0036] In this configuration, since the first flange and the enclosure are integrated into one structure, and the second flange and the enclosure are integrated into one structure, the first flange, the second flange and the enclosure are integrated into one structure, simplifying the assembly process.

[0037] Secondly, a box body is provided, including a bottom plate, a surrounding wall, and a riveting component, wherein the surrounding wall and the bottom plate are riveted together and fixed by the riveting component.

[0038] The housing of this application embodiment is applied to a battery. Since the bottom plate and the surrounding wall are connected by riveting parts, there is no need to drill holes during the riveting process. Moreover, the riveting parts do not completely penetrate the stacked structure formed by the bottom plate and the surrounding wall. That is, the interior and exterior of the housing with riveting parts are not connected due to the installation of riveting parts. This makes the sealing performance of the housing better and can reduce or avoid impurities or liquids from the outside of the housing from entering the internal cavity of the housing to a certain extent, thereby improving the reliability of the battery using this housing.

[0039] In one possible design, the enclosure has a first opening, and the receiving cavity communicates with the first opening; the wall includes a barrier and a first flange, the barrier and the first flange are integrally formed, the barrier is disposed at one end of the first flange and intersects with the first flange, the first flange is connected to the bottom plate by a riveting member, and the first flange is at least partially opposite to the first opening in a first direction.

[0040] In this configuration, the first flange is connected to the base plate by a riveting component, and the first flange is positioned opposite to the first opening. That is, in the area where automatic riveting is performed, one side is the outside of the housing, and the other side is opposite to the first opening. The operating space on both sides is relatively large, which facilitates the riveting operation of the riveting component.

[0041] In one possible design, a sealant is provided between the base plate and the enclosure, with the sealant applied at least to the outer perimeter of the riveted parts.

[0042] In this configuration, on the one hand, the sealant acts as a sealant around the riveted parts; on the other hand, the sealant improves the connection strength between the base plate and the enclosure.

[0043] Thirdly, an electrical device is provided, which includes the battery provided by the above-mentioned technical solution, and the battery is used to provide electrical energy.

[0044] Since the electrical device includes the aforementioned battery, it possesses at least all the beneficial effects of the aforementioned battery, which will not be elaborated upon here. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of an electrical device provided in one embodiment of this application;

[0047] Figure 2This is an exploded schematic diagram of a battery provided in one embodiment of this application;

[0048] Figure 3 This is a schematic diagram of the battery housing provided in one embodiment of this application;

[0049] Figure 4 yes Figure 3 A cross-sectional view of the box along the AA direction;

[0050] Figure 5 This is a schematic diagram of the structure of the side panel of the box provided in one embodiment of this application;

[0051] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0052] Figure 7 This is an exploded view of a container provided in one embodiment of this application;

[0053] Figure 8 This is an exploded view of the base plate provided in one embodiment of this application;

[0054] Figure 9 This is a structural schematic diagram of the box provided in another embodiment of this application;

[0055] Figure 10 yes Figure 9 A cross-sectional view of the box along the DD direction;

[0056] Figure 11 yes Figure 8 Enlarged view of point C in the middle;

[0057] Figure 12 This is a structural schematic diagram of the box provided in another embodiment of this application;

[0058] Figure 13 yes Figure 12 Exploded view of the middle chamber.

[0059] The details of the reference numerals used in the above figures are as follows:

[0060] 1- Electrical appliances;

[0061] 10 - Battery; 20 - Control mechanism; 30 - Drive mechanism;

[0062] 1000 - Housing; 2000 - Cover; 1100 - Base plate; 1110 - First plate; 1111 - Connecting part; 1112 - Support part; 1113 - Transition part; 1114 - Second recess; 1115 - First through hole; 1120 - Second plate; 1121 - Heat exchanger groove; 1122 - Second through hole; 1130 - Heat exchanger channel; 1140 - Sealant; 1200 - Enclosure Wall; 1210 - Enclosure section; 1220 - First flange; 1221 - First recess; 1222 - First thickness zone; 1223 - Second thickness zone; 1224 - Protrusion; 1230 - Second flange; 1231 - Third through hole; 1232 - Rivet nut; 1240 - Lifting plate; 1241 - Lifting hole; 1242 - Sleeve; 1300 - Receiving cavity; 1400 - Riveting component;

[0063] 1510 - First locking component; 1600 - Limiting beam; 3000 - Battery cell. Detailed Implementation

[0064] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0065] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[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] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 this application and simplifying the description, and do not indicate or imply that the structure 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 this application.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0069] With increasing environmental awareness and the rapid rise of the new energy industry, there is ample room for the application and development of batteries. Batteries are widely used in electric vehicles, aerospace, and many other fields.

[0070] In related technologies, the battery includes a housing, which includes a base plate and a frame. The frame and the base plate are connected by screws, such as FDS (Flow Drill Screw). In this connection method, the screws pass through the frame and the base plate, resulting in holes in both the frame and the base plate. This affects the airtightness of the housing formed after the frame and the base plate are connected. Liquids or dust and other impurities may enter the housing through the gaps between the screws and the frame, or between the screws and the base plate, affecting the individual battery cells inside the housing and thus affecting the reliability of the battery.

[0071] Based on the above considerations, and to solve the aforementioned problems, this application provides a battery in which the bottom plate of the battery casing is riveted to the surrounding wall, for example, by using SPR (Self Piercing Riveting). During the self-piercing riveting process, one of the bottom plate and the surrounding wall is a first sheet, and the other is a second sheet. The first and second sheets are stacked, and the riveting component is pressed from the first sheet side to the second sheet side. After the riveting component pierces the first sheet, the second sheet undergoes plastic deformation. The rivet legs of the riveting component open and embed into the second sheet, ultimately forming an interlocking structure of the riveting component, the first sheet, and the second sheet. That is, the first sheet and the second sheet are connected by the riveting component, and the riveting component does not pierce the second sheet. With this design, at least one of the base plate and the enclosure is not pierced by the rivets, so that there are no through holes between the inside and outside of the box formed by the connection between the base plate and the enclosure. This results in a better airtight seal and can reduce or prevent impurities such as liquids or dust from entering the box to a certain extent, thereby improving the reliability of the battery.

[0072] The battery, housing, and electrical device provided in the embodiments of this application will be explained in detail below.

[0073] The battery disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements.

[0074] Please see Figure 1 For ease of description, this example uses a vehicle as the electrical device 1. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or extended-range electric vehicles, etc. The vehicle's interior can house a drive mechanism 30, a control mechanism 20, and a battery 10. The drive mechanism 30 can be a motor, etc., and the control mechanism 20 controls the battery 10 to supply power to the drive mechanism 30. For example, the battery 10 can be located at the bottom, front, or rear of the vehicle. The battery 10 can power other equipment within the vehicle. For example, the battery 10 can serve as the vehicle's operating power source for its electrical system, such as for the power requirements of starting, navigation, and operation. In another example, the battery 10 can not only serve as the vehicle's operating power source but also as its driving power source, replacing or partially replacing gasoline or natural gas to provide driving force. The vehicle in this example uses the aforementioned battery 10. By improving the reliability of the battery 10, the reliability of the electrical device 1 can be improved.

[0075] like Figures 2 to 4 As shown, the battery 10 provided in this embodiment includes a housing 1000 and a battery cell 3000. The housing 1000 includes a bottom plate 1100 and a surrounding wall 1200. The bottom plate 1100 and the surrounding wall 1200 form a receiving cavity 1300, and the battery cell 3000 is installed in the receiving cavity 1300. The surrounding wall 1200 and the bottom plate 1100 are riveted and fixed by a riveting member 1400.

[0076] It is worth noting that in this embodiment, the length, width, and thickness directions mentioned are all based on the length, width, and thickness directions of the housing 1000. The length direction of the housing 1000 is the Y-axis direction, the width direction is the X-axis direction, and the thickness direction is the Z-axis direction. The bottom plate 1100 is located on one side of the housing 1000 in the thickness direction. Taking the thickness direction of the housing 1000 as the vertical direction as an example, the bottom plate 1100 is located in the lower region of the housing 1000. The lower region of the enclosure wall 1200 is connected to the bottom plate 1100. The enclosure wall 1200 extends at least partially along the Z-axis, that is, the enclosure wall 1200 extends at least partially upward or obliquely upward.

[0077] The housing 1000 provides a space for housing the battery cell 3000. At least a portion of the base plate 1100 is located below the battery cell 3000 and supports the battery cell 3000. At least a portion of the enclosure 1200 surrounds the side of the battery cell 3000. The enclosure 1200 is a closed annular structure and is connected to the edge area of ​​the base plate 1100. The enclosure 1200 and the base plate 1100 define a receiving cavity 1300, in which the battery cell 3000 is installed.

[0078] The battery comprises one or more battery cells 3000. When there are multiple battery cells 3000, they can be electrically connected in series, parallel, or a combination thereof. Each battery cell 3000 can be a secondary or primary battery; it can be a lithium-ion battery, sodium-ion battery, or magnesium-ion battery, but is not limited to these. Each battery cell 3000 can be cylindrical, flat, cuboid, or other shapes.

[0079] The enclosure 1200 and the base plate 1100 are fixedly connected by a riveting member 1400. For example, the enclosure 1200 and the base plate 1100 are connected by a self-piercing riveting process using the riveting member 1400, which can be a self-piercing rivet. A portion of the enclosure 1200 and a portion of the base plate 1100 are stacked. The side closer to the receiving cavity 1300 is called the inner side, and the side farther from the receiving cavity 1300 is called the outer side. In the area where the enclosure 1200 and the base plate 1100 are stacked opposite each other, the enclosure 1200 can be located on the inner side, or the base plate 1100 can be located on the inner side. The two ends of the riveting member 1400 along its own axis are the head and the leg, respectively. The riveting member 1400 can be riveted from the side of the base plate 1100 away from the wall 1200 to the side closer to the wall 1200, or it can be riveted from the side of the wall 1200 away from the base plate 1100 to the side closer to the base plate 1100.

[0080] In one example, such as Figure 3 and Figure 4 As shown, a portion of the enclosure 1200 is located inside the base plate 1100, and a portion of the enclosure 1200 is stacked on top of the base plate 1100. The riveting member 1400 is riveted from bottom to top. During the riveting process, the head of the riveting member 1400 is located below and the legs are located above. The legs of the riveting member 1400 press the base plate 1100 upward, causing the base plate 1100 to deform and be pierced. The legs of the riveting member 1400 continue to move upward and press the enclosure 1200. During the pressing of the enclosure 1200, the legs of the riveting member 1400 expand and deform outward and embed into the enclosure 1200. The area of ​​the enclosure 1200 opposite to the riveting member 1400 deforms upward to form a protrusion 1224. The riveting member 1400 locks the enclosure 1200 and the base plate 1100 together. During the self-piercing riveting process, the riveting piece 1400 pierces the bottom plate 1100, but does not pierce the enclosure wall 1200. That is, the area at the bottom of the housing 1000 where the riveting piece 1400 is located does not have a through hole in the thickness direction of the housing 1000. Compared with the related technology where the airtightness of the housing 1000 is reduced due to the use of screw connections, the airtightness of the housing 1000 in the battery 10 provided in this application embodiment is not affected by the connection between the bottom plate 1100 and the enclosure wall 1200.

[0081] As can be seen from the above, in the battery 10 of this application embodiment, since the bottom plate 1100 and the surrounding wall 1200 of the housing 1000 are riveted and fixed by the riveting member 1400, in the riveting process, since there is no need to drill holes, and the riveting member 1400 does not completely penetrate the stacked structure formed by the bottom plate 1100 and the surrounding wall 1200, that is, the interior and exterior of the housing 1000 with the riveting member 1400 installed will not be connected due to the installation of the riveting member 1400, thereby making the sealing performance of the housing 1000 better, which can reduce or avoid impurities or liquids outside the housing 1000 from entering the interior of the housing 1000 to a certain extent, and provide higher protection for the battery cell 3000, and the reliability of the battery 10 is higher.

[0082] In one possible design, the housing 1000 has a first opening, and the bottom plate 1100 and the enclosure 1200 are connected by a riveting member 1400 in a position opposite to the first opening in a first direction.

[0083] During the self-piercing riveting process, a portion of the enclosure 1200 and a portion of the base plate 1100 are stacked to form a stacked structure. Self-piercing riveting can be performed using a punch and a die. The die has grooves and is located on one side of the stacked structure, with the grooves facing the stacked structure. The punch is located on the other side of the stacked structure and pushes the riveting piece 1400 into the stacked structure, causing the riveting piece 1400 to press against the stacked structure, resulting in a portion of the stacked structure entering the groove to form a protrusion 1224. During this process, the riveting piece 1400 is embedded in the stacked structure, and the riveting piece 1400 interlocks with the stacked structure to complete the self-piercing riveting process. As can be seen from the above self-piercing riveting process, a die and a punch need to be placed on both sides of the stacked structure, therefore, a certain amount of operating space is required on both sides of the stacked structure. Since the base plate 1100 and the enclosure 1200 are connected by the riveting member 1400 at a position opposite to the first opening, one of the punching device and the mold can be inserted into the receiving cavity 1300 through the first opening to approach the stacked structure, while the other is located outside the housing 1000. The operating space on both sides is relatively large, facilitating self-piercing riveting operations. In some examples, the first direction can be the thickness direction of the housing 1000, and the first opening is located on one side of the housing 1000 in the thickness direction, allowing the battery cell 3000 to be inserted into the receiving cavity 1300 of the housing 1000 through the first opening.

[0084] To facilitate the fixing of the base plate 1100 and the enclosure 1200 by riveting (e.g., self-piercing riveting), at least a portion of the base plate 1100 can be stacked with a portion of the enclosure 1200. A flange can be provided on the outer peripheral edge of the base plate 1100, parallel to the enclosure 1200, so that the riveting member 1400 is disposed between the flange and the enclosure 1200 through the stacking of the flange of the base plate 1100 and the enclosure 1200; alternatively, a flange can be provided at one end of the enclosure 1200, parallel to the base plate 1100, so that the riveting member 1400 is disposed between the flange and the base plate 1100 through the stacking of the flange of the enclosure 1200 and the base plate 1100.

[0085] like Figure 5 As shown, in one possible design, the enclosure 1200 includes a barrier portion 1210 and a first flange 1220. The barrier portion 1210 is disposed at one end of the first flange 1220 and intersects with the first flange 1220. The first flange 1220 is connected to the base plate 1100 by a riveting member 1400.

[0086] The enclosure portion 1210 intersects with the first flange 1220, meaning the angle between them is not 0 degrees or 180 degrees. For example, the angle between the enclosure portion 1210 and the first flange 1220 can be 85°, 87°, 90°, 92°, 95°, or 98°, etc. In one specific example, the enclosure portion 1210 is perpendicular to the first flange 1220, meaning the angle between them is 90° or close to 90°. In this configuration, with the first flange 1220 parallel to the base plate 1100 for easy connection, the enclosure portion 1210 can occupy a relatively small space to enclose a relatively deeper accommodating cavity 1300. The depth direction of the accommodating cavity 1300 is the same as the thickness direction of the housing 1000. When the angle between the enclosure portion 1210 and the first flange 1220 is closer to 90°, the enclosure portion 1210, which can enclose a relatively deeper receiving cavity 1300, can be made with relatively less material.

[0087] In this configuration, a flange, specifically a first flange 1220, is provided in the enclosure 1200. The first flange 1220 is riveted to the base plate 1100, and the enclosure portion 1210 and the base plate 1100 together form an accommodating cavity 1300. Because the first flange 1220 and the enclosure portion 1210 are arranged at an angle, it facilitates the connection between the first flange 1220 and the base plate 1100.

[0088] In some embodiments, the enclosure portion 1210 and the first flange 1220 are integrally formed.

[0089] The enclosure portion 1210 and the first flange 1220 are integrally formed. For example, the enclosure portion 1210 and the first flange 1220 can be cast into an integral structure, extruded into an integral structure, or a sheet material can be bent to form an integrally formed first flange 1220 and enclosure portion 1210.

[0090] Since the enclosure part 1210 and the first flange 1220 are integrally formed, there is no need to connect the enclosure part 1210 and the first flange 1220 during the assembly process, saving assembly time; there is no connecting seam between the enclosure part 1210 and the first flange 1220, so the airtightness is better and the connection strength is stronger.

[0091] In some embodiments, the enclosure portion 1210 is at least partially opposite the battery cell 3000 in a first direction to support the battery cell 3000.

[0092] Since the first flange 1220 is riveted to the base plate 1100, and the base plate 1100 is connected to the enclosure 1200 via the riveting member 1400, the position of the connection is opposite to the first opening in the first direction. Therefore, at least a portion of the first flange 1220 is opposite to the first opening. At least a portion of the structure, i.e., the first flange 1220, may be partially opposite to the first opening, while other portions may not be opposite to the first opening; alternatively, the entire structure of the first flange 1220 may be opposite to the first opening. The first flange 1220 is opposite to the first opening, and the first flange 1220 and the base plate 1100 are stacked to form a laminated structure. Therefore, the laminated structure is opposite to the first opening in the thickness direction of the housing 1000, i.e., the first opening is located on the side of the housing 1000 opposite to the base plate 1100. With this configuration, the first opening can be used to allow the battery cell 3000 to be placed into the receiving cavity 1300.

[0093] Since at least a portion of the first flange 1220 is opposite to the battery cell 3000, the first flange 1220 provides a certain degree of support for the battery cell 3000. The integral molding of the first flange 1220 and the enclosure portion 1210 provides relatively stronger structural strength for the installation of the battery cell 3000.

[0094] In one possible design, such as Figure 5 and 6 As shown, the first flange 1220 has a first recess 1221, and a portion of the riveting member 1400 is located within the first recess 1221. In this configuration, the first recess 1221 provides accommodating space for a portion of the structure of the riveting member 1400, and the first recess 1221 provides a certain degree of protection for the riveting member 1400.

[0095] In some examples, the first flange 1220 has a protrusion 1224 formed by stamping the rivet 1400, the protrusion 1224 covering the outside of a portion of the structure of the rivet 1400, and both the portion of the rivet 1400 and the protrusion 1224 are located within the first recess 1221.

[0096] In this configuration, the head of the rivet 1400 is located on the side of the base plate 1100 away from the first flange 1220, and the leg of the rivet 1400 passes through the base plate 1100 and is embedded in the first flange 1220, so that the first flange 1220 forms a protrusion 1224.

[0097] The protrusion 1224 is located within the first recess 1221, meaning that the dimension of the protrusion 1224 in the thickness direction of the housing 1000 is less than or equal to the dimension of the first recess 1221 in the thickness direction of the housing 1000. Taking the opening of the first recess 1221 facing upward and the protrusion 1224 extending upward as an example, the top surface of the protrusion 1224 does not exceed the opening of the first recess 1221. In this arrangement, the protrusion 1224 does not extend outside the first recess 1221. When the opening of the first recess 1221 communicates with the receiving cavity 1300, the protrusion 1224 will not extend into the receiving cavity 1300, thereby reducing the contact between the protrusion 1224 and the battery cell 3000. Since the protrusion 1224 does not contact the battery cell 3000, the first recess 1221 provides a certain degree of protection for the protrusion 1224 and improves the flatness of the battery cell 3000 placed within the housing 1000 to a certain extent.

[0098] It is worth noting that when the head of the rivet 1400 is placed on the side of the first flange 1220 away from the base plate 1100, and the leg of the rivet 1400 passes through the first flange 1220 and is embedded in the base plate 1100, so that the base plate 1100 forms a protrusion 1224, a first recess 1221 can be provided on the base plate 1100 to accommodate the protrusion 1224.

[0099] In some possible configurations, the number of first recesses 1221 is the same as the number of protrusions 1224. Multiple rivets 1400 are provided between the first flange 1220 and the base plate 1100, thereby forming multiple protrusions 1224, which are respectively housed in multiple first recesses 1221.

[0100] For example, the first recess 1221 is a blind hole, and the cross-sectional area of ​​the region enclosed by the first recess 1221 is greater than the cross-sectional area of ​​the protrusion 1224. Taking the first recess 1221 as a cylindrical hole and the protrusion 1224 as a cylindrical structure as an example, the radius of the first recess 1221 is greater than the radius of the protrusion 1224.

[0101] In some other configurations, the number of first recesses 1221 may be less than the number of protrusions 1224, that is, multiple protrusions 1224 are located within the same first recess 1221.

[0102] For example, such as Figure 3 , Figure 5 and Figure 6 As shown, in one possible design, the first flange 1220 has a first thickness region 1222 and a second thickness region 1223. The thickness of the first thickness region 1222 is greater than the thickness of the second thickness region 1223. The enclosure portion 1210 is connected to the first thickness region 1222. The second thickness region 1223 is connected to the end of the first thickness region 1222 away from the enclosure portion 1210. The end face of the first thickness region 1222 away from the enclosure portion 1210 is connected to the surface of the second thickness region 1223 near the receiving cavity 1300 to form a first recess 1221.

[0103] The thickness of the second thickness region 1223 is less than the thickness of the first thickness region 1222, thus creating a thickness difference between the first thickness region 1222 and the second thickness region 1223, which forms the first recess 1221. The first thickness region 1222 is located on one side of the second thickness region 1223, and the plane containing the top surface of the first thickness region 1222 is higher than the plane containing the top surface of the second thickness region 1223. The first thickness region 1222, close to the side surface of the second thickness region 1223, and the top surface of the second thickness region 1223 together form the first recess 1221. In a enclosure structure spaced apart along the length direction, the first thickness region 1222 and the second thickness region 1223 are distributed sequentially along the length direction. In a enclosure structure spaced apart along the width direction, the first thickness region 1222 and the second thickness region 1223 are distributed sequentially along the width direction.

[0104] Since the first thickness region 1222 and the second thickness region 1223 are arranged sequentially in the same direction, the second thickness region 1223 can be manufactured by stamping or cutting. For example, a sheet metal of the same thickness as the first thickness region 1222 can be used, and one end can be stamped or cut to reduce the thickness of a portion at that end. The area with the smaller thickness forms the second thickness region 1223. The second thickness region 1223 can be formed in a single cutting or stamping operation, resulting in higher manufacturing efficiency, shorter processing time, and a simpler processing procedure. As can be seen from the above, the first recess 1221 is formed by the thickness difference between the first thickness region 1222 and the second thickness region 1223, which facilitates the manufacturing of the first recess 1221.

[0105] The enclosure 1210 can be a cavity structure, with a relatively larger thickness and an internal cavity. Alternatively, the enclosure 1210 can be a plate-like structure, specifically a structure made of solid sheet material.

[0106] In one possible design, both the enclosure 1210 and the first flange 1220 are plate-like structures.

[0107] In this configuration, since both the enclosure 1210 and the first flange 1220 are plate-like structures, they can be formed by bending a single sheet of material, simplifying the manufacturing process and increasing efficiency. Furthermore, because the enclosure 1210 is plate-like, its thickness is relatively smaller, its weight is relatively lighter, and it occupies less assembly space. The lighter weight of the enclosure 1210 results in a smaller overall weight for the housing 1000. The smaller assembly space required for the enclosure 1210 allows for the formation of a relatively larger accommodating cavity 1300 within the same assembly space.

[0108] In one possible design, such as Figure 4 and Figure 7 As shown, a sealant 1140 is provided between the base plate 1100 and the enclosure 1200, and the sealant 1140 is provided at least in the outer peripheral area of ​​the riveting member 1400. The sealant 1140 can be double-sided foam adhesive, liquid adhesive, etc. For example, a piece of sealant 1140 can be provided for each riveting member 1400. Before riveting, the sealant 1140 is applied in dots between the base plate 1100 and the enclosure 1200. During self-piercing riveting, a riveting member 1400 is pressed against each piece of sealant 1140, so that the riveting area of ​​the riveting member 1400 is the area provided with sealant 1140.

[0109] In other examples, such as Figure 7 As shown, a sealing ring-shaped sealant 1140 is provided between the base plate 1100 and the enclosure 1200. The sealing ring-shaped sealant 1140 can be applied to one of the base plate 1100 or the enclosure 1200, and then the other is overlapped, so that the sealant 1140 is located between the base plate 1100 and the enclosure 1200. Alternatively, the sealant 1140 can be applied to one of the base plate 1100 or the enclosure 1200, and then the other is overlapped, so that the sealant 1140 is located between the base plate 1100 and the enclosure 1200. Since the sealant 1140 forms a sealing ring-shaped area, riveting can be performed anywhere within this ring-shaped area, thereby reducing the accuracy requirement for the positioning of the riveted parts 1400 and facilitating the riveting operation. In a specific example, the sealant 1140 is applied to the area of ​​the first flange 1220 opposite to the base plate 1100.

[0110] In this configuration, a sealant 1140 is provided between the base plate 1100 and the enclosure 1200. On the one hand, the sealant 1140 plays a sealing role around the rivet 1400. On the other hand, the sealant 1140 improves the connection strength between the base plate 1100 and the enclosure 1200.

[0111] The box 1000 provided in this embodiment can have a prismatic, cylindrical, or cuboid shape. In one specific example, the box 1000 is a cuboid structure, meaning that the projection of the box 1000 in the thickness direction is generally rectangular. The base plate 1100 is a rectangular plate structure, and the enclosure 1200 is a rectangular frame structure. The enclosure 1200 may include four wall panels, such as... Figure 5 As shown, each wall panel includes a barrier portion 1210 and a first flange 1220. Two wall panels are respectively installed at both ends of the base plate 1100 in the length direction, and the other two wall panels are respectively installed at both ends of the base plate 1100 in the width direction. The sides of adjacent wall panels are connected. For example, adjacent wall panels can be connected by welding. Specifically, in adjacent wall panels, the barrier portions are welded to each other, and the first flanges 1220 are welded to each other. The four first flanges 1220 that are welded together in sequence are located on the same horizontal plane.

[0112] like Figure 7 As shown, the box body 1000 may also be provided with a beam structure, with both ends of the beam structure connected to two relatively spaced enclosure parts 1210, and the bottom of the beam structure connected to the base plate 1100. The beam structure and the enclosure parts 1210 can be connected by welding, bolts, or other methods, and the beam structure and the base plate 1100 can be connected by bolts, rivets, or other methods.

[0113] The beam structure within the accommodating cavity 1300 divides the cavity 1300 into multiple chambers. The beam structure may include two limiting beams 1600, spaced apart and parallel to each other along the length of the housing 1000. The two ends of each limiting beam 1600 are connected to the enclosure portions of two wall panels spaced apart along the width. The two limiting beams 1600 divide the accommodating cavity 1300 into three chambers. The chamber between the two limiting beams 1600 is used to accommodate individual battery cells 3000, while the other two chambers can be used to accommodate high-voltage boxes, controllers, and other structures.

[0114] The beam structure may include a partition beam (not shown), which is parallel to and positioned between two limiting beams 1600. Both ends of the partition beam are connected to the enclosure portions of two wall panels spaced apart in the width direction, and the bottom of the partition beam is connected to the base plate 1100. The partition beam further divides the chamber between the two limiting beams 1600 into multiple sub-chambers to accommodate a battery cell 3000 containing multiple battery cells. One or more battery cells 3000 can be placed in one sub-chamber. The partition beam facilitates the partitioned management of multiple battery cells.

[0115] In some embodiments, the base plate 1100 may be a solid sheet or a sheet with a cavity.

[0116] In other embodiments, the base plate 1100 integrates a heat exchange structure, for example, a heat exchange channel 1130 is provided in the base plate 1100. In this arrangement, integrating the heat exchange structure into the base plate 1100 improves the heat exchange efficiency of the housing 1000 and makes the structure of the housing 1000 more compact, reserving more space for the accommodating cavity 1300.

[0117] like Figure 8 , Figure 9 and Figure 10 As shown, in one possible design, the base plate 1100 includes a first plate 1110 and a second plate 1120. The first plate 1110 is connected to the side of the second plate 1120 near the accommodating cavity 1300. The first plate 1110 and the second plate 1120 are connected, and a heat exchange channel 1130 is formed between the first plate 1110 and the second plate 1120. The first plate 1110 and the first flange 1220 are connected by a riveting member 1400.

[0118] The separate arrangement of the first plate 1110 and the second plate 1120 facilitates the formation of the heat exchange channel 1130 within the base plate 1100, reduces the processing difficulty of the heat exchange channel 1130, and lowers the processing cost of the heat exchange channel 1130.

[0119] For example, a heat exchange groove 1121 may be formed on the side of the first plate 1110 facing the second plate 1120, and the second plate 1120 may cover the opening of the heat exchange groove 1121, thereby sealing the heat exchange groove 1121 as a heat exchange channel 1130. Alternatively, a heat exchange groove 1121 may be formed on the side of the second plate 1120 facing the first plate 1110, and the first plate 1110 may cover the opening of the heat exchange groove 1121, thereby sealing the heat exchange groove 1121 as a heat exchange channel 1130.

[0120] In another embodiment, heat exchange grooves 1121 can be formed on the first plate 1110 and the second plate 1120 respectively. After the first plate 1110 and the second plate 1120 are connected, the heat exchange grooves 1121 on the first plate 1110 and the heat exchange grooves 1121 on the second plate 1120 are connected and together form a heat exchange channel 1130.

[0121] exist Figure 8 In the base plate 1100 shown, a heat exchange groove 1121 is provided on the second plate 1120. The heat exchange groove 1121 has a top opening facing the first plate 1110. The first plate 1110 is stacked on the second plate 1120, and the first plate 1110 covers the top opening of the heat exchange groove 1121, thereby forming a heat exchange channel 1130. The heat exchange groove 1121 on the second plate 1120 can be manufactured by stamping or cutting processes. In one example, the second plate 1120 is made of a sheet of uniform thickness, and the heat exchange groove 1121 is manufactured on the second plate 1120 by stamping. This makes the second plate 1120 relatively lighter.

[0122] In some embodiments, the first plate 1110 and the second plate 1120 may be welded together.

[0123] In some embodiments, the limiting beam 1600 is connected to the base plate 1100 via a first locking member 1510, which can be a rivet or a screw. A plurality of first through holes 1115 are provided on the first plate 1110, and a plurality of second through holes 1122 are provided on the second plate 1120. The plurality of first through holes 1115 and the plurality of second through holes 1122 are connected one-to-one, and each second through hole 1122 is located in an area of ​​the second plate 1120 where the heat exchange groove 1121 is not provided. The first through holes 1115 and the second through holes 1122 are used for the first locking member 1510 to pass through, so as to connect the limiting beam 1600 to the first plate 1110 and the second plate 1120 via the first locking member 1510. Figure 7 As shown, two limiting beams 1600 are installed inside the box body 1000, as... Figure 8 As shown, a plurality of first through holes 1115 are provided corresponding to one of the limiting beams 1600, and a plurality of first through holes 1115 are provided corresponding to the other limiting beam 1600. A second through hole 1122 is provided corresponding to each of the first through holes 1115. With this configuration, one limiting beam 1600 is connected to the first plate 1110 and the second plate 1120 through a plurality of first locking members 1510.

[0124] like Figure 11As shown, in one possible design, the first plate 1110 includes a connecting part 1111 and a supporting part 1112. The connecting part 1111 is connected to the first flange 1220 by a riveting member 1400. The surface of the supporting part 1112 near the receiving cavity 1300 is flush with the surface of the first flange 1220 near the receiving cavity 1300.

[0125] The connecting part 1111 and the supporting part 1112 can be integrally formed. There is a height difference between the top surface of the connecting part 1111 and the top surface of the supporting part 1112. The connecting part 1111 is stacked with the first flange 1220, and the connecting part 1111 is located outside the first flange 1220. Therefore, the surface of the connecting part 1111 near the receiving cavity 1300 is below the surface of the first flange 1220 away from the receiving cavity 1300. The surface of the supporting part 1112 near the receiving cavity 1300 is flush with the surface of the first flange 1220 near the receiving cavity 1300. Therefore, the surface of the supporting part 1112 near the receiving cavity 1300 is above the plane of the surface of the first flange 1220 near the receiving cavity 1300. That is, there is a height difference between the top surface of the connecting part 1111 (the surface near the receiving cavity 1300) and the top surface of the supporting part 1112 (the surface near the receiving cavity 1300).

[0126] In this configuration, the surface of the support portion 1112 near the accommodating cavity 1300 is flush with the surface of the first flange 1220 near the accommodating cavity 1300, thereby enabling the surface of the support portion 1112 near the accommodating cavity 1300 and the surface of the first flange 1220 near the accommodating cavity 1300 to jointly support the battery cell 3000, increasing the contact area between the housing 1000 and the battery cell 3000.

[0127] In some configurations, the thickness of the connecting portion 1111 may be less than the thickness of the support portion 1112, so that the top surface of the support portion 1112 is higher than the top surface of the connecting portion 1111.

[0128] In other settings, such as Figure 10 and Figure 11 As shown, the first plate 1110 also includes a transition portion 1113, the connecting portion 1111 and the supporting portion 1112 are connected through the transition portion 1113, the transition portion 1113 and the supporting portion 1112 are connected to form a second recess 1114, and at least a portion of the second plate 1120 is located in the second recess 1114.

[0129] The transition portion 1113 connects the support portion 1112 and the connecting portion 1111, allowing the support portion 1112 and the connecting portion 1111, which have a height difference, to be connected. With this configuration, the thickness of the support portion 1112 can be equal to the thickness of the connecting portion 1111. The connecting portion 1111, the transition portion 1113, and the support portion 1112 are integrally formed, and can be formed by stamping on a sheet of equal thickness. There is a height difference between the connecting portion 1111 and the support portion 1112, and the transition portion 1113 connects the connecting portion 1111 and the support portion 1112. The connecting portion 1111 is located outside the first flange 1220, and the connecting portion 1111 overlaps with the first flange 1220 to facilitate riveting by the riveting member 1400. Since the connecting portion 1111 is located outside the first flange 1220, and given that the connecting portion 1111 and the supporting portion 1112 have the same thickness, the supporting portion 1112 is positioned higher than the connecting portion 1111. Part of the battery cell 3000's structure contacts the first flange 1220, and part of the battery cell 3000's structure contacts the supporting portion 1112. Both the first flange 1220 and the supporting portion 1112 provide support for the battery cell 3000.

[0130] In the above configuration, since the thickness of the support portion 1112 can be equal to the thickness of the connecting portion 1111, the thickness of the support portion 1112 can be relatively smaller, and the weight can be relatively lighter. Since the support portion 1112 is connected to the transition portion 1113 to form the second recess 1114, and at least a portion of the second plate 1120 is located within the second recess 1114, the overall thickness of the base plate 1100 is relatively smaller, and the structure is more compact.

[0131] In one possible design, such as Figure 2 As shown, the battery 10 also includes a cover 2000, which is connected to the housing 1000 and seals the first opening, as shown. Figure 5 , Figure 9 and Figure 10 As shown, the enclosure 1200 also includes a second flange 1230, which is inclinedly disposed at the other end of the enclosure portion 1210, and the cover 2000 is connected to the second flange 1230.

[0132] The cover 2000 is used to close the first opening, making the receiving cavity 1300 a sealed chamber, thereby preventing dust and other impurities from entering the receiving cavity 1300. The cover 2000 is connected to the housing 1000, and the cover 2000 and the housing 1000 are connected by locking devices such as bolts, rivets, and clips. In some embodiments, a sealing ring may be provided between the cover 2000 and the housing 1000 to improve the sealing performance of the connection between the cover 2000 and the housing 1000.

[0133] The second flange 1230 and the first flange 1220 respectively enclose the opposite ends of the blocking portion 1210. For example, the first flange 1220 is located at the bottom end of the blocking portion 1210, and the second flange 1230 is located at the top end of the blocking portion 1210. The first flange 1220 and the second flange 1230 can extend in the same direction or in different directions. When the first flange 1220 and the second flange 1230 extend in the same direction, both the first flange 1220 and the second flange 1230 extend towards the central axis of the receiving cavity 1300. In the extension direction of the flanges, the length of the second flange 1230 is less than the length of the first flange 1220, so that in the thickness direction of the housing 1000, a portion of the first flange 1220 is positioned opposite the second flange 1230, and another portion of the first flange 1220 is positioned opposite the first opening. Figure 10 As shown, in one example, the extension direction of the first flange 1220 is opposite to that of the second flange 1230. The first flange 1220 extends towards the central axis of the receiving cavity 1300, while the second flange 1230 extends away from the central axis of the receiving cavity 1300. In this arrangement, the area of ​​the first flange 1220 opposite to the first opening is relatively larger, increasing the operating space for the self-piercing riveting operation.

[0134] The enclosure portion 1210 is inclined at one end of the second flange 1230, meaning the angle between the enclosure portion 1210 and the second flange 1230 is not 0 degrees or 180 degrees. For example, the angle between the enclosure portion 1210 and the second flange 1230 can be 85°, 87°, 90°, 92°, 95°, or 98°, etc. In one specific example, the enclosure portion 1210 is perpendicular to the second flange 1230, meaning the angle between the enclosure portion 1210 and the second flange 1230 is 90° or close to 90°.

[0135] The cover 2000 is connected to the housing 1000. Specifically, the cover 2000 is connected to the second flange 1230 in the enclosure 1200. Exemplarily, the second flange 1230 has a third through hole 1231, and the cover 2000 has a fourth through hole. The fourth through hole and the third through hole 1231 are arranged opposite each other, communicating to allow a second locking member to pass through, thereby connecting the second flange 1230 and the cover 2000 via the second locking member. In one example, the second locking member includes a screw and a rivet nut 1232. The rivet nut 1232 is installed in the third through hole 1231, and the screw passes through the fourth through hole and engages with the rivet nut 1232, thereby connecting the second flange 1230 and the cover 2000.

[0136] The second flange 1230 increases the connection area between the enclosure 1200 and the cover 2000, making it easier to connect the enclosure 1200 and the cover 2000; the second flange 1230 increases the contact area between the enclosure 1200 and the cover 2000, improving the connection stability between the cover 2000 and the box 1000.

[0137] In one possible design, the second flange 1230 and the enclosure portion 1210 are an integral structure. The second flange 1230 and the enclosure portion 1210 can be manufactured by an integral molding method such as casting, bending, or cutting.

[0138] In this configuration, since the first flange 1220 and the enclosure 1210 are integrated, and the second flange 1230 and the enclosure 1210 are integrated, the first flange 1220, the second flange 1230 and the enclosure 1210 are integrated, simplifying the assembly process of the battery 10.

[0139] In some embodiments, the second flange 1230, the enclosure portion 1210 and the first flange 1220 are all plate-shaped structures. During the manufacturing process, the two ends of a plate can be bent in different directions to form the first flange 1220 and the second flange 1230. The manufacturing process is simple, easy to operate and has low production cost.

[0140] In some embodiments, the battery 10 further includes a bottom protective plate, which is disposed on the side of the bottom plate 1100 away from the receiving cavity 1300, that is, below the bottom plate 1100. The bottom protective plate serves to protect and support the bottom plate 1100.

[0141] like Figures 5 to 13As shown, in a specific embodiment of this application, the battery 10 includes a housing 1000, a cover 2000, and a battery cell 3000. The housing 1000 includes a bottom plate 1100, a surrounding wall 1200, and a riveting member 1400. The bottom plate 1100 and the surrounding wall 1200 form a receiving cavity 1300, which is connected to a first opening. The cover 2000 covers the first opening. The bottom plate 1100 includes a first plate 1110 and a second plate 1120. A heat exchange groove 1121 is provided on the second plate 1120. The first plate 1110 is connected to one side of the second plate 1120 in the thickness direction of the housing 1000. The first plate 1110 covers the heat exchange groove 1121 to form a heat exchange channel 1130. The heat exchange channel 1130 is used to introduce heat exchange fluid for heat exchange treatment of the battery cell 3000. The first plate 1110 includes an integrally formed connecting portion 1111, a transition portion 1113, and a supporting portion 1112. The transition portion 1113 surrounds the periphery of the supporting portion 1112, and the connecting portion 1111 surrounds the periphery of the transition portion 1113. There is a height difference between the connecting portion 1111 and the supporting portion 1112. The transition portion 1113 is connected to the supporting portion 1112 to form a second recess 1114. The second plate 1120 is completely located within the second recess 1114 and is connected to the supporting portion 1112. The enclosure wall 1200 is at least one side plate. Exemplarily, the housing 1000 has a cuboid structure, and the enclosure wall 1200 includes four side plates. The four side plates are connected end to end to form a square annular frame. Each side panel includes a enclosure portion 1210, a first flange 1220, and a second flange 1230. The first flange 1220 is located at the bottom of the enclosure portion 1210, and the second flange 1230 is located at the top of the enclosure portion 1210. The first flange 1220 is an inwardly folded flange, and the second flange 1230 is an outwardly folded flange. The cover 2000 is connected to the second flange 1230. The two side plates spaced apart in the width direction of the housing 1000 also include a lifting plate 1240. One end of the lifting plate 1240 is connected to the enclosure portion 1210. The lifting plate 1240 is provided with a lifting hole 1241, and a sleeve 1242 can be installed in the lifting hole 1241. The lifting plate 1240 is located below the second flange 1230. The sleeve 1242 is used for a third locking member to pass through. The third locking member is used to connect the lifting plate 1240 to the structure in the electrical equipment for connecting the battery 10, so as to fix the battery 10 in a set position in the electrical equipment. The first flange 1220 has a first thickness region 1222 and a second thickness region 1223. The thickness of the second thickness region 1223 is less than the thickness of the first thickness region 1222, so as to form a first recess 1221 in the second thickness region 1223.The first flange 1220 and the first plate 1110 are fixed by self-piercing riveting with a riveting member 1400. The first plate 1110 is located outside the first flange 1220. A sealant 1140 is provided between the first plate 1110 and the first flange 1220. The riveting member 1400 is riveted from the side of the first plate 1110 away from the first flange 1220 to the side closer to the first flange 1220 to form a protrusion 1224 on the side of the first flange 1220 away from the first plate 1110. A portion of the riveting member 1400 and the protrusion 1224 are located in the first recess 1221. The top surface of the protrusion 1224 is lower than the plane where the top surface of the first thickness region 1222 is located. The box body 1000 also includes two limiting beams 1600, which are spaced apart along the length of the box body 1000. The two ends of the limiting beams 1600 are connected to two side plates respectively along the width of the box body 1000. The bottom of the limiting beams 1600 is connected to the first plate 1110 and the second plate 1120 through the first locking member 1510.

[0142] This application embodiment also provides a box 1000, including a bottom plate 1100, a surrounding wall 1200 and a riveting member 1400. The surrounding wall 1200 and the bottom plate 1100 are riveted and fixed by the riveting member 1400. The bottom plate 1100 and the surrounding wall 1200 form an accommodating cavity 1300.

[0143] The accommodating cavity 1300 is used to accommodate at least the battery cell 3000, the base plate 1100 is used to support at least the battery cell 3000, and the enclosure wall 1200 is arranged around the battery cell 3000 to provide a certain degree of protection for the battery cell 3000.

[0144] The housing 1000 of this application embodiment is applied to the battery 10. In the housing 1000, since the bottom plate 1100 and the surrounding wall 1200 are connected by a riveting member 1400, in the riveting process, since there is no need to drill holes, and the riveting member 1400 does not completely penetrate the stacked structure formed by the bottom plate 1100 and the surrounding wall 1200, that is, the interior and exterior of the housing 1000 with the riveting member 1400 are not connected by the rivets, thereby making the sealing performance of the housing 1000 better. It can reduce or avoid impurities or liquids outside the housing 1000 from entering the accommodating cavity 1300 inside the housing 1000 to a certain extent, thereby improving the reliability of the battery 10 applied to the housing 1000.

[0145] In one possible design, the housing 1000 has a first opening, and the accommodating cavity 1300 communicates with the first opening; the enclosure 1200 includes an enclosure portion 1210 and a first flange 1220, the enclosure portion 1210 and the first flange 1220 are integrally formed, the enclosure portion 1210 is disposed at one end of the first flange 1220 and intersects with the first flange, the first flange 1220 is connected to the bottom plate 1100 by a riveting member 1400, and the first flange 1220 is at least partially opposite to the first opening in a first direction.

[0146] The first opening is used to allow the battery cell 3000 to be placed into the receiving cavity 1300. The first flange 1220 is at least partially opposite to the first opening in a first direction, that is, the first flange 1220 is at least partially located below the first opening. During the riveting process, the first flange 1220 and the base plate 1100 are partially stacked to form a stacked structure. A mold and a punch are required on both sides of the stacked structure. Since the first flange 1220 is opposite to the first opening, one of the punch and the mold can be inserted into the receiving cavity 1300 through the first opening to be close to the stacked structure, while the other is located outside the housing 1000. The operating space on both sides is relatively large, which facilitates the self-piercing riveting operation.

[0147] In one possible design, a sealant 1140 is provided between the base plate 1100 and the enclosure 1200, and the sealant 1140 is provided at least in the peripheral area of ​​the rivet 1400.

[0148] The sealant 1140 can be double-sided foam adhesive, liquid adhesive, etc. For example, a sealing ring-shaped sealant 1140 is provided between the base plate 1100 and the enclosure 1200. The sealing ring-shaped sealant 1140 can be applied or pasted onto one of the base plate 1100 or the enclosure 1200, and then the other is overlapped, so that the sealant 1140 is located between the base plate 1100 and the enclosure 1200.

[0149] In this configuration, on the one hand, the sealant 1140 plays a sealing role around the rivet 1400, and on the other hand, the sealant 1140 improves the connection strength between the base plate 1100 and the enclosure 1200.

[0150] This application embodiment also provides an electrical device, which includes the battery 10 provided in the above embodiment, and the battery 10 is used to provide electrical energy.

[0151] The electrical devices provided in this application embodiment can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. 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 battery, characterized in that, include: The enclosure includes a bottom plate and surrounding walls, the bottom plate and surrounding walls forming a receiving cavity; A single battery cell is installed within the accommodating cavity; The base plate and the enclosure are riveted together and fixed by the riveting components.

2. The battery as described in claim 1, characterized in that, The box has a first opening, the accommodating cavity communicates with the first opening, and the bottom plate and the enclosure are connected by the riveting member at a position opposite to the first opening in a first direction.

3. The battery as described in claim 2, characterized in that, The enclosure includes a barrier section and a first flange. The barrier section is disposed at one end of the first flange and intersects with the first flange. The first flange is connected to the base plate by the riveting member.

4. The battery as described in claim 3, characterized in that, The enclosure section and the first flange are integrally formed.

5. The battery as described in claim 3 or 4, characterized in that, The first flange is at least partially opposite the battery cell in the first direction to support the battery cell.

6. The battery as described in any one of claims 3 to 5, characterized in that, The first flange has a first recess, and a portion of the riveting member is located within the first recess.

7. The battery as described in claim 6, characterized in that, The first flange has a first thickness region and a second thickness region. The thickness of the first thickness region is greater than the thickness of the second thickness region. The enclosure portion is connected to the first thickness region. The second thickness region is connected to the end of the first thickness region away from the enclosure portion. The end face of the first thickness region away from the enclosure portion is connected to the surface of the second thickness region near the receiving cavity to form the first recess.

8. The battery according to any one of claims 3 to 7, characterized in that, Both the enclosure section and the first flange are plate-shaped structures.

9. The battery according to any one of claims 3 to 8, characterized in that, The base plate includes a first plate and a second plate. The first plate is connected to the side of the second plate near the accommodating cavity. A heat exchange channel is formed between the first plate and the second plate. The first plate and the first flange are connected by the riveting member.

10. The battery as claimed in claim 9, characterized in that, The first plate includes a connecting part and a supporting part. The connecting part is connected to the outer peripheral edge of the supporting part. The connecting part is connected to the first flange through the riveting member. The surface of the supporting part near the receiving cavity is flush with the surface of the first flange near the receiving cavity.

11. The battery as claimed in claim 10, characterized in that, The first plate also includes a transition portion, the connecting portion and the supporting portion are connected through the transition portion, the transition portion and the supporting portion are connected to form a second recess, and at least a portion of the second plate is located in the second recess.

12. The battery according to any one of claims 1 to 11, characterized in that, A sealant is provided between the base plate and the enclosure wall, and the sealant is provided at least in the outer periphery of the riveted parts.

13. The battery according to any one of claims 3 to 11, characterized in that, The battery also includes a cover, which is connected to the housing and seals the first opening. The enclosure also includes a second flange, which is located at the other end of the enclosure. The cover is connected to the second flange.

14. The battery as claimed in claim 13, characterized in that, The second flange and the enclosure are an integral structure.

15. A box, characterized in that, It includes a base plate, a surrounding wall, and riveting components. The surrounding wall is riveted and fixed to the base plate by the riveting components, and the surrounding wall and the base plate enclose a receiving cavity.

16. The housing as described in claim 15, characterized in that, The box has a first opening, and the accommodating cavity communicates with the first opening; the enclosure includes a barrier portion and a first flange, the barrier portion and the first flange are integrally formed, the barrier portion is disposed at one end of the first flange and intersects with the first flange, the first flange is connected to the bottom plate by a riveting member, and the first flange is at least partially opposite to the first opening in a first direction.

17. The housing as described in claim 15 or 16, characterized in that, A sealant is provided between the base plate and the enclosure wall, and the sealant is provided at least in the outer periphery of the riveted parts.

18. An electrical appliance, characterized in that, Includes a battery as described in any one of claims 1 to 14, the battery being used to provide electrical energy.

Images