Battery and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and electric equipment.The battery comprises a first shell, a second shell and a frame, and a containing cavity is formed between the first shell and the second shell; the frame body is located outside the containing cavity, the frame body is connected with the first shell body and the second shell body through a welding seam, and the welding seam penetrates through the frame body from the face, away from the containing cavity, of the frame body and extends towards the containing cavity. The cross section area of the battery can be reduced.

Description

Technical Field

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

[0002] A battery is a power supply component that provides electrical energy to power-consuming modules to maintain their normal operation.

[0003] like Figure 1 As shown, a battery generally includes an upper casing and a lower casing. The circumferential edge of the upper casing and the circumferential edge of the lower casing are welded together by a skirt to form a receiving cavity, which can store the core.

[0004] In related technologies, the weld formed during welding needs to penetrate the skirt. In order to ensure sufficient welding area between the skirts of the upper and lower shells, the width of the skirt is relatively large, which leads to a corresponding increase in the cross-sectional area of ​​the battery. Utility Model Content

[0005] In view of this, this application provides a battery and an electrical device to reduce the cross-sectional area of ​​the battery.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of this application provides a battery comprising a first housing, a second housing, and a frame, wherein...

[0008] A receiving cavity is formed between the first housing and the second housing;

[0009] The frame is located outside the receiving cavity. The frame is connected to the first housing and the second housing by a weld. The weld passes through the frame from the side of the frame away from the receiving cavity and extends toward the receiving cavity.

[0010] Optionally, the first housing has a first sub-cavity, and the second housing has a second sub-cavity, with the openings of the first sub-cavity and the second sub-cavity being opposite to each other and forming the receiving cavity.

[0011] Optionally, the first housing includes a first base plate and a first side wall, the first side wall being connected to one side of the first base plate and extending circumferentially along the first base plate, the first side wall and the first base plate forming a first sub-cavity; and / or, the second housing includes a second base plate and a second side wall, the second side wall being connected to one side of the second base plate and extending circumferentially along the second base plate, the second side wall and the second base plate forming a second sub-cavity.

[0012] Optionally, the weld connects the side of the first sidewall facing the first housing and the side of the second sidewall facing the second housing.

[0013] Optionally, the weld includes a first weld and a second weld, wherein the first weld extends through the frame from the side of the frame away from the first sub-cavity and into the first sidewall, and the second weld extends through the frame from the side of the frame away from the second sub-cavity and into the second sidewall.

[0014] Optionally, the thickness of the first shell ranges from 25 to 150 micrometers, and the thickness of the second shell ranges from 25 to 150 micrometers.

[0015] Optionally, the thickness of the frame ranges from 25 to 150 micrometers.

[0016] Optionally, the frame is connected at both ends to form a ring.

[0017] Optionally, the battery includes terminals with through holes extending from the receiving cavity through the through holes, wherein at least one of the first housing, the second housing, and the frame has the through holes.

[0018] A second aspect of this application provides an electrical device comprising a battery as described in the above technical solutions.

[0019] The beneficial effects of the technical solution provided in this application include at least the following: the cavity formed by the first and second housings can store components such as the core and separator. The frame located outside the cavity connects the first and second housings via a weld, which facilitates the storage of the core within the cavity. The weld extends through the frame from the side facing away from the cavity and into the cavity, allowing space for the weld on the frame surface. Therefore, the frame has lower dimensional requirements compared to the skirt, which correspondingly helps to reduce the cross-sectional area of ​​the battery. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0021] Figure 1 This is a schematic diagram of the structure of a battery casing based on related technologies;

[0022] Figure 2 This is a full cross-sectional schematic diagram of a partial structure of a battery provided in an embodiment of this application;

[0023] Figure 3This is a full cross-sectional schematic diagram of a partial structure of another battery provided in an embodiment of this application;

[0024] Figure 4 A full cross-sectional schematic diagram of a partial structure of another battery provided in an embodiment of this application;

[0025] Figure 5 This is a full cross-sectional schematic diagram of a partial structure of another battery provided in an embodiment of this application.

[0026] The reference numerals in the figure indicate:

[0027] 100, receiving cavity; 200, through hole;

[0028] 1. First housing; 101. First cavity; 11. First base plate; 12. First sidewall;

[0029] 2. Second shell; 201. Second cavity; 21. Second bottom plate; 22. Second side wall;

[0030] 3. Frame;

[0031] 4. Weld seam; 41. First weld seam; 42. Second weld seam;

[0032] 5. Pole post.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on the given information, and these directional terms are used only to more clearly describe the relationships between structures, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged.

[0036] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0037] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] The first aspect of this application provides a battery, such as Figure 2 As shown, the battery includes a first housing 1, a second housing 2, and a frame 3, wherein,

[0039] A receiving cavity 100 is formed between the first housing 1 and the second housing 2;

[0040] The frame 3 is located outside the receiving cavity 100. The frame 3 is connected to the first housing 1 and the second housing 2 by a weld 4. The weld 4 passes through the frame 3 from the side of the frame 3 away from the receiving cavity 100 and extends toward the receiving cavity 100.

[0041] Understandably, the cavity 100 formed by the first housing 1 and the second housing 2 can store components such as the core and separator. The frame 3 located outside the cavity 100 is connected to the first housing 1 and the second housing 2 by a weld 4, which facilitates the storage of the core within the cavity 100. The weld 4 penetrates the frame 3 from the side facing away from the cavity 100 and extends into the cavity 100, allowing space for the weld 4 on the surface of the frame 3. Therefore, the frame 3 has lower dimensional requirements compared to the skirt, which correspondingly helps to reduce the cross-sectional area of ​​the battery.

[0042] like Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of weld seam 4 during the skirt welding of a battery casing in a related technology. Figure 2 This is a schematic diagram of weld seam 4 during battery welding in this application. Figure 1 The weld 4 shown needs to penetrate the skirts of both housings, therefore sufficient area needs to be reserved on the skirts to avoid interference between the laser or welding torch and the housings. However, the battery in this application does not have interference between the first housing 1 and the second housing 2 at the location of the laser or welding torch, so there is no need to reserve sufficient space for this.

[0043] In this embodiment, the first housing 1 and the second housing 2 can be in direct contact, forming a weld pool that penetrates the frame 3 while melting a portion of the first housing 1 and a portion of the second housing 2, thus achieving the connection between the frame 3 and the first housing 1 and the second housing 2.

[0044] In this embodiment of the application, there may be a certain gap between the first shell 1 and the second shell 2. There are two welds 4. The molten pool of one weld 4 penetrates the frame 3 and melts a part of the first shell 1, and the molten pool of the other weld 4 penetrates the frame 3 and melts a part of the second shell 2, thus realizing the connection between the frame 3 and the first shell 1 and the second shell 2.

[0045] In the embodiments of this application, the structures of the first housing 1 and the second housing 2 may be the same or different.

[0046] In this embodiment, the weld 4 can extend circumferentially along the frame 3 and form a ring.

[0047] In some embodiments of this application, such as Figure 3 As shown, the first housing 1 has a first sub-cavity 101, and the second housing 2 has a second sub-cavity 201. The openings of the first sub-cavity 101 and the second sub-cavity 201 are arranged opposite to each other and form a receiving cavity 100.

[0048] It is understood that the first sub-cavity 101 and the second sub-cavity 201 can be part of the receiving cavity 100, with their openings facing each other, and can jointly receive the core for protection.

[0049] In the embodiments of this application, the shapes of the first sub-cavity 101 and the second sub-cavity 201 may be the same or different.

[0050] In some embodiments of this application, such as Figure 3 As shown, the first housing 1 includes a first base plate 11 and a first side wall 12. The first side wall 12 is connected to one side of the first base plate 11 and extends circumferentially along the first base plate 11. The first side wall 12 and the first base plate 11 form a first sub-cavity 101.

[0051] It is understood that the first base plate 11 and the first side wall 12 define the first sub-cavity 101. The side of the first base plate 11 facing the first side wall 12 and the inner side of the first side wall 12 serve as the boundary of the first sub-cavity 101. The end of the first side wall 12 away from the first base plate 11 can also serve as the opening of the first sub-cavity 101, so that it can be connected to the second housing 2 and cooperate with the second sub-cavity 201 to form the receiving cavity 100.

[0052] In this embodiment, the first sidewall 12 may be in a closed shape so that the first sub-cavity 101 can accommodate the core.

[0053] In this embodiment, the first housing 1 can be a sheet metal part, and its first base plate 11 and first side wall 12 can be formed by bending or other processes.

[0054] In some embodiments of this application, such as Figure 3 As shown, the second housing 2 includes a second bottom plate 21 and a second side wall 22. The second side wall 22 is connected to one side of the second bottom plate 21 and extends along the circumference of the second bottom plate 21. The second side wall 22 and the second bottom plate 21 form a second sub-cavity 201.

[0055] It is understood that the second base plate 21 and the second side wall 22 define the second sub-cavity 201. The side of the second base plate 21 facing the second side wall 22 and the inner side of the second side wall 22 serve as the boundary of the second sub-cavity 201. The end of the second side wall 22 away from the second base plate 21 can also serve as the opening of the second sub-cavity 201. Thus, it can connect with the first housing 1 and cooperate with the first sub-cavity 101 to form a receiving cavity 100.

[0056] In this embodiment, the second sidewall 22 may be in a closed shape so that the second sub-cavity 201 can accommodate the core.

[0057] In this embodiment, the second housing 2 can be a sheet metal part, and its second base plate 21 and second side wall 22 can be formed by bending or other processes.

[0058] In some embodiments of this application, such as Figure 3 As shown, the first housing 1 includes a first base plate 11 and a first side wall 12. The first side wall 12 is connected to one side of the first base plate 11 and extends circumferentially along the first base plate 11. The first side wall 12 and the first base plate 11 form a first sub-cavity 101. The second housing 2 includes a second base plate 21 and a second side wall 22. The second side wall 22 is connected to one side of the second base plate 21 and extends circumferentially along the second base plate 21. The second side wall 22 and the second base plate 21 form a second sub-cavity 201.

[0059] Understandably, this arrangement is advantageous because the side of the first sidewall 12 facing away from the first base plate 11 and the side of the second sidewall 22 facing away from the second base plate 21 are arranged opposite each other, so that the openings of the first sub-cavity 101 and the second sub-cavity 201 are opposite each other to form a receiving cavity 100.

[0060] In some embodiments of this application, such as Figure 2 As shown, weld 4 connects the first sidewall 12 to the side facing the first housing 1 and the second sidewall 22 to the side facing the second housing 2.

[0061] Understandably, this arrangement allows weld 4 to connect the first housing 1 and the second housing 2 simultaneously. The presence of weld 4 can also seal the tiny gap between the first sidewall 12 and the second sidewall 22, thus improving the sealing performance of the receiving cavity 100.

[0062] In this embodiment, the weld 4 can penetrate the first sidewall 12 and the second sidewall 22 to enter the receiving cavity 100, or it can extend into the interior of the first sidewall 12 and the second sidewall 22.

[0063] In some embodiments of this application, such as Figure 3 As shown, weld 4 includes a first weld 41 and a second weld 42. The first weld 41 penetrates the frame 3 from the side of the frame 3 away from the first sub-cavity 101 and extends into the first side wall 12. The second weld 42 penetrates the frame 3 from the side of the frame 3 away from the second sub-cavity 201 and extends into the second side wall 22.

[0064] Understandably, the first weld 41 connects the frame 3 and the first sidewall 12, and the second weld 42 connects the frame 3 and the second sidewall 22. This allows the frame 3 to connect the first housing 1 and the second housing 2, thereby improving the stability of the receiving cavity 100. The first weld 41 and the second weld 42 respectively penetrate the frame 3, which also helps to improve the bonding strength between the two and the frame 3, thus improving the connection performance.

[0065] In this embodiment of the application, the first sidewall 12 and the frame 3 can be connected by laser welding to form a first weld 41.

[0066] In this embodiment, the second sidewall 22 and the frame 3 can be connected by laser welding to form a second weld 42.

[0067] In some embodiments of this application, such as Figure 3 As shown, the thickness of the first shell 1 ranges from 25 to 150 micrometers, and the thickness of the second shell 2 ranges from 25 to 150 micrometers.

[0068] It is understandable that within the above value range, it is difficult to directly connect the first shell 1 and the second shell 2 by welding. The frame 3 can serve as the carrier of the weld 4 and connect the first shell 1 and the second shell 2, so as to avoid the increased difficulty of battery production process caused by direct welding of the first shell 1 and the second shell 2.

[0069] In this embodiment of the application, the thickness of the first housing 1 can be 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, 120 micrometers, 125 micrometers, 130 micrometers, 135 micrometers, 140 micrometers, 145 micrometers, or 150 micrometers, or other values ​​from 25 to 150 micrometers.

[0070] In this embodiment of the application, the thickness of the second shell 2 can be 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, 120 micrometers, 125 micrometers, 130 micrometers, 135 micrometers, 140 micrometers, 145 micrometers, or 150 micrometers, or other values ​​from 25 to 150 micrometers.

[0071] In this embodiment of the application, the thickness of the first housing 1 may be the same as or different from the thickness of the second housing 2.

[0072] In some embodiments of this application, such as Figure 3 As shown, the thickness of frame 3 ranges from 25 to 150 micrometers.

[0073] It is understandable that within the above value range, the frame 3 can maintain the connection between the first shell 1 and the second shell 2, while occupying less space in the cross-sectional direction, which is beneficial to reducing the cross-sectional area of ​​the battery.

[0074] In this embodiment, the thickness of the frame 3 can be 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, 120 micrometers, 125 micrometers, 130 micrometers, 135 micrometers, 140 micrometers, 145 micrometers, or 150 micrometers, or other values ​​between 25 and 150 micrometers.

[0075] In some embodiments of this application, the frame 3 is connected at both ends to form a ring.

[0076] It is understandable that during battery production, the first end of the frame 3 can be placed on the first housing 1 and the second housing 2. As the weld 4 extends during welding, the frame 3 is attached to the first housing 1 and the second housing 2 by means of bending, etc., until the tail end of the frame 3 is connected to the first end to complete the welding.

[0077] In this embodiment of the application, the tail end and the head end of the frame 3 can be connected by welding.

[0078] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the battery includes a terminal post 5 and a through hole 200. The terminal post 5 extends from the receiving cavity 100 through the through hole 200. At least one of the first housing 1, the second housing 2, and the frame 3 has the through hole 200.

[0079] Understandably, the terminal 5 can be used to connect with other electrical components. The through hole 200 allows the terminal 5 to pass through, which facilitates the electrical connection between the terminal 5 and the winding core of the receiving cavity 100, thus enabling the battery to supply power.

[0080] In this embodiment, the first housing 1 may have a through hole 200 only, the second housing 2 may have a through hole 200 only, the frame 3 may have a through hole 200 only, the first housing 1 and the second housing 2 may have through holes 200, the first housing 1 and the frame 3 may have through holes 200, the second housing 2 and the frame 3 may have through holes 200, or the first housing 1, the second housing 2 and the frame 3 may all have through holes 200.

[0081] In this embodiment of the application, the through hole 200 can penetrate the frame 3 and simultaneously penetrate the first housing 1 and the second housing 2.

[0082] A second aspect of this application provides an electrical device that includes a battery as described in the above embodiments.

[0083] It is understood that, due to the use of the battery in the above embodiments, the electrical device of this application has the same technical effects as the above embodiments, and will not be described again here.

[0084] In this embodiment of the application, the electrical device can be a smartphone, tablet computer, or other similar product.

[0085] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0086] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0087] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery, characterized by, The battery comprises a first shell (1), a second shell (2) and a frame (3), wherein, The first shell (1) and the second shell (2) form a containing cavity (100); The frame (3) is located outside the containing cavity (100), the frame (3) connects the first shell (1) and the second shell (2) through a welding seam (4), the welding seam (4) penetrates the frame (3) from a side of the frame (3) away from the containing cavity (100) and extends to the containing cavity (100).

2. The battery of claim 1, wherein, The first shell (1) has a first sub-cavity (101), the second shell (2) has a second sub-cavity (201), the opening of the first sub-cavity (101) is oppositely arranged with the opening of the second sub-cavity (201) and encloses the containing cavity (100).

3. The battery of claim 2, wherein, The first shell (1) comprises a first bottom plate (11) and a first side wall (12), the first side wall (12) is connected to a side of the first bottom plate (11) and extends along the circumference of the first bottom plate (11), the first side wall (12) and the first bottom plate (11) enclose the first sub-cavity (101); And / or, The second shell (2) comprises a second bottom plate (21) and a second side wall (22), the second side wall (22) is connected to a side of the second bottom plate (21) and extends along the circumference of the second bottom plate (21), the second side wall (22) and the second bottom plate (21) enclose the second sub-cavity (201).

4. The battery of claim 3, wherein, The welding seam (4) connects a side of the first side wall (12) facing the first shell (1) and a side of the second side wall (22) facing the second shell (2).

5. The battery of claim 3, wherein, The welding seam (4) comprises a first welding seam (41) and a second welding seam (42), the first welding seam (41) penetrates the frame (3) from a side of the frame (3) away from the first sub-cavity (101) and extends into the first side wall (12), the second welding seam (42) penetrates the frame (3) from a side of the frame (3) away from the second sub-cavity (201) and extends into the second side wall (22).

6. The battery of claim 1, wherein, The thickness of the first shell (1) ranges from 25 to 150 microns, the thickness of the second shell (2) ranges from 25 to 150 microns.

7. The battery of claim 1, wherein, The thickness of the frame (3) ranges from 25 to 150 microns.

8. The battery of claim 1, wherein, The frame (3) is annular with the two ends connected.

9. The battery of claim 1, wherein, The battery comprises a pole (5), the battery has a through hole (200), the pole (5) extends out of the containing cavity (100) through the through hole (200), wherein at least one of the first shell (1), the second shell (2) and the frame (3) has the through hole (200).

10. An electric device, characterized by The electric device comprises the battery according to any one of claims 1 to 9.

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