Battery and terminal device

Abstract

The application relates to the field of battery structures, in particular to a battery and a terminal device. The battery comprises a battery cell and a protection plate, and further comprises a connector; the connector comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are detachably connected; an opening is arranged on a top sealing edge of the battery cell, the opening is opposite to a tab of the battery cell to expose the tab; the first connecting part is located at the opening, and the first connecting part is connected with the tab; the second connecting part is connected with a preset side wall of the protection plate, and the preset side wall is a side wall of the protection plate in a thickness direction of the protection plate. The battery provided by the application can increase the space of the protection plate, reduce the occupation of the protection plate on the head space of the battery, meanwhile, the arrangement of the connector facilitates the quick disassembly of the protection plate and the tab, and the energy density of the battery is improved.

Description

Technical Field

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

[0002] Currently, the battery cell and protection board are mainly connected by nickel strips. The nickel strips are welded to the front or back of the protection board, and the battery cell tabs and nickel strips are laser welded. Then, the battery cell tabs are bent to assemble the protection board onto the battery head.

[0003] This connection method has the following problems:

[0004] 1. Nickel sheets need to be soldered to the front or back of the protective plate, which takes up space on the protective plate.

[0005] 2. The protection board and the battery cell tabs are connected by laser welding, which makes disassembly and assembly inconvenient. Utility Model Content

[0006] The purpose of this application is to provide a battery and terminal device that can reduce the space occupied by the protection board when the battery cell is connected to the protection board, and make the disassembly and assembly of the protection board and the battery cell tabs more convenient.

[0007] This application provides a battery, including a battery cell and a protection board, and the battery also includes a connector;

[0008] The connector includes a first connecting part and a second connecting part, and the first connecting part and the second connecting part are detachably connected.

[0009] The top sealing edge of the battery cell has an opening, which is opposite to the electrode tab of the battery cell to expose the electrode tab; the first connecting part is located at the opening and is connected to the electrode tab;

[0010] The second connecting part is connected to a preset sidewall of the protective plate, wherein the preset sidewall is the sidewall of the protective plate in its own thickness direction.

[0011] In the above technical solution, the preset sidewall is further provided with a receiving groove, and the second connecting part is connected to the inner wall of the receiving groove;

[0012] The receiving groove is opposite to the opening to accommodate the connector.

[0013] In the above technical solution, the groove depth of the receiving groove is further configured such that the groove edge of the receiving groove fits against the surface of the top sealing edge.

[0014] In the above technical solution, the inner wall of the receiving groove is provided with a conductive layer and a pad, the pad is connected to the conductive layer, and the pad is used to connect the second connection part.

[0015] In the above technical solution, the size of the opening is further greater than the size of the portion of the connector located inside the opening;

[0016] The opening size of the receiving groove is at least larger than the size of the portion of the connector located inside the receiving groove.

[0017] In the above technical solution, the first connecting part is further welded to the electrode tab.

[0018] In the above technical solution, the first connecting part and the second connecting part are further fastened together.

[0019] In the above technical solution, the electrode tab does not exceed the coverage area of ​​the top sealing edge.

[0020] In the above technical solution, the protective plate is further arranged opposite to the end face of the battery cell where the top sealing edge is led out on one side of its own thickness direction, and the protective plate is provided with a fabrication area on the other side of its own thickness direction.

[0021] This application also provides a terminal device, including the battery described in the above solution.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] The battery provided in this application can increase the space for the protection board and reduce the space occupied by the protection board on the battery head. At the same time, the connector facilitates the quick assembly and disassembly of the protection board and the tabs, thereby improving the battery energy density.

[0024] This application also provides a terminal device, including the battery described in the above solution. Based on the above analysis, it is clear that the terminal device also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the battery structure provided in this application;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 A schematic diagram of the first assembly structure of the protection plate and the electrode tab provided in this application;

[0029] Figure 4 A schematic diagram of the second assembly structure of the protection plate and the electrode provided in this application.

[0030] In the figure: 101-cell; 102-protection board; 103-connector; 104-tab; 105-first connection part; 106-second connection part; 107-top sealing edge; 108-opening; 109-preset sidewall; 110-receiving groove; 111-tab lead-out surface; 112-device. Detailed Implementation

[0031] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. 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.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Example 1

[0035] The battery provided in this application includes a battery cell 101 and a protection board 102. The protection board 102 is disposed between the battery cell 101 and the terminal device to connect the battery cell 101 and the terminal device. The protection board 102 can be used to control the charging and discharging process of the battery to prevent overcharging and overheating during use, thereby ensuring the operational stability and safety of the terminal device.

[0036] See Figures 1 to 4 As shown, the battery provided in this application also includes a connector 103, which is used to connect the tabs 104 of the cell 101 to the protection board 102. The connector 103 makes it easier to assemble and disassemble the tabs 104 and the protection board 102 during battery repair or assembly.

[0037] Specifically, connector 103 includes a first connecting portion 105 and a second connecting portion 106. The tabs 104 of the battery cell 101 extend into the top sealing edge 107 of the battery cell 101. (As...) Figure 3 and Figure 4 As shown, the top sealing edge 107 of the battery cell 101 has two openings 108, which are respectively opposite to the positive and negative electrode tabs of the battery cell 101, thus exposing the side of the corresponding electrode tab 104. The first connecting part 105 is located at the opening 108 and is connected to the side of the electrode tab 104. Specifically, the first connecting part 105 is directly welded to the electrode tab 104, thereby achieving an electrical connection between the first connecting part 105 and the electrode tab 104.

[0038] The second connecting portion 106 is connected to the preset sidewall 109 of the protection plate 102 to achieve electrical connection between the second connecting portion 106 and the protection plate 102. The connection between the first connecting portion 105 and the second connecting portion 106 achieves electrical connection between the battery cell 101 and the protection plate 102. Furthermore, the second connecting portion 106 is located on the sidewall of the protection plate 102 in its thickness direction, and does not occupy the surface space of the protection plate 102, allowing for the installation of a greater number of devices 112 on the surface of the protection plate 102. The first connecting portion 105 and the second connecting portion 106 are detachably connected, making the assembly and disassembly of the battery cell 101 and the protection plate 102 more convenient.

[0039] The battery provided in this application can increase the layout space of the protection board 102 and reduce the space occupied by the protection board 102 on the battery head. At the same time, the setting of the connector 103 facilitates the quick assembly and disassembly of the protection board 102 and the tab 104, thereby improving the battery energy density.

[0040] In the optional solutions of this embodiment, such as Figure 2 As shown, the first connecting part 105 and the second connecting part 106 are fastened together to make the disassembly and assembly operations between the first connecting part 105 and the second connecting part 106 more convenient.

[0041] In this embodiment, the tab 104 does not extend beyond the coverage of the top seal edge 107. Compared to the prior art where the tab 104 extends beyond the top seal edge 107, this application places the tab 104 completely within the top seal edge 107, saving space above the top seal edge 107 and further reducing the space occupied by the battery head.

[0042] In an optional embodiment, a receiving groove 110 is provided on the preset side wall 109, and the second connecting part 106 is connected to the inner wall of the receiving groove 110; the receiving groove 110 is opposite to the opening 108 to accommodate the connector 103.

[0043] In this embodiment, since the space for placing the protective plate 102 in its width direction is limited, directly connecting the second connecting part 106 to the preset sidewall 109 of the rectangular plate-shaped protective plate 102 would inevitably reduce the width of the protective plate 102. This application places the connector 103 within the receiving groove 110, which only affects the width of the protective plate 102 at the corresponding positions of the connector 103, while the width of the protective plate 102 is greater in other positions, thus increasing the surface space of the protective plate 102 and providing more space for the device 112.

[0044] In addition, the second connecting part 106 is connected to the inner wall of the receiving groove 110, which can increase the connection area between the second connecting part 106 and the preset side wall 109, so that the connection between the second connecting part 106 and the protective plate 102 is more firm and reliable.

[0045] In an optional embodiment, the inner wall of the receiving groove 110 is provided with a conductive layer and solder pads. The solder pads are connected to the conductive layer and are used to connect the second connecting part 106. Specifically, depending on the specific structure of the connector 103, the bottom and / or walls of the receiving groove 110 can be plated with copper and correspondingly provided with solder pads to solder the connector 103, thereby enabling the connector 103 to achieve electrical connection with the internal circuit of the protection board 102.

[0046] In an optional embodiment, the depth of the receiving groove 110 is configured such that the edge of the receiving groove 110 fits against the surface of the top sealing edge 107.

[0047] In this embodiment, the depth of the receiving groove 110 is related to the thickness of the connector 103 and the thickness of the top. When the first connecting part 105 and the second connecting part 106 are connected, the groove edge of the receiving groove 110 fits against the surface of the top sealing edge 107, so that the protective plate 102 can rest against the surface of the top sealing edge 107, making the overall structure more compact and saving more space.

[0048] In an optional embodiment, the size of the opening 108 is at least larger than the size of the portion of the connector 103 located inside the opening 108; the size of the groove of the receiving groove 110 is at least larger than the size of the portion of the connector 103 located inside the receiving groove 110.

[0049] In this embodiment, the opening 108 is slightly larger than the portion where the connector 103 connects to the tab 104, to facilitate soldering the connector 103 to the tab 104 without significantly affecting the structural strength and encapsulation effect of the top sealing edge 107. The receiving groove 110 is specifically a through groove extending through the predetermined sidewall 109 in the thickness direction of the protective plate 102, and the width of the receiving groove 110 is related to the width of the connector 103. The width of the receiving groove 110 is slightly larger than the width of the connector 103, to facilitate the installation of the connector 103 within the receiving groove 110 without excessively occupying the surface space of the protective plate 102.

[0050] Example 2

[0051] The battery in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0052] In an optional embodiment, the protection plate 102 is arranged opposite to the end face of the lead-out top sealing edge 107 of the battery cell 101 on one side of its own thickness direction, and the protection plate 102 is provided with a fabrication area on the other side of its own thickness direction.

[0053] In this embodiment, see Figure 1 and Figure 2 As shown, when connecting the protection plate 102 to the tab 104, at the head of the cell 101, the surface of the protection plate 102 is parallel to the lead-out surface 111 of the tab, the preset sidewall 109 of the protection plate 102 is opposite to the top sealing edge 107, and the second connecting part 106 installed on the protection plate 102 is engaged with the first connecting part 105 installed on the tab 104, thus electrically connecting the protection plate 102 to the cell 101. At this time, the upper surface of the protection plate 102 is equipped with the device 112, and the lower surface of the protection plate 102 is in contact with the lead-out surface 111 of the tab, so that the overall structure is more compact and saves more space.

[0054] Example 3

[0055] This application provides a terminal device in embodiment three, which includes the battery of any of the above embodiments, and thus has all the beneficial technical effects of the battery of any of the above embodiments, which will not be repeated here.

[0056] 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; and 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. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A battery, comprising a cell and a protection board, characterized in that, The battery also includes a connector; The connector includes a first connecting part and a second connecting part, and the first connecting part and the second connecting part are detachably connected. The top sealing edge of the battery cell has an opening, which is opposite to the electrode tab of the battery cell to expose the electrode tab; the first connecting part is located at the opening and is connected to the electrode tab; The second connecting part is connected to a preset sidewall of the protective plate, wherein the preset sidewall is the sidewall of the protective plate in its own thickness direction.

2. The battery according to claim 1, characterized in that, The preset sidewall is provided with a receiving groove, and the second connecting part is connected to the inner wall of the receiving groove; The receiving groove is opposite to the opening to accommodate the connector.

3. The battery according to claim 2, characterized in that, The depth of the receiving groove is configured such that the edge of the receiving groove fits against the surface of the top sealing edge.

4. The battery according to claim 2, characterized in that, The inner wall of the receiving groove is provided with a conductive layer and a pad, the pad is connected to the conductive layer, and the pad is used to connect the second connection part.

5. The battery according to claim 2, characterized in that, The size of the opening is at least larger than the size of the portion of the connector located within the opening; The opening size of the receiving groove is at least larger than the size of the portion of the connector located inside the receiving groove.

6. The battery according to claim 1, characterized in that, The first connecting part is welded to the electrode tab.

7. The battery according to claim 1, characterized in that, The first connecting part and the second connecting part are fastened together.

8. The battery according to claim 1, characterized in that, The tab does not extend beyond the coverage area of ​​the top sealing edge.

9. The battery according to claim 1, characterized in that, The protective plate is arranged opposite the end face of the battery cell where the top sealing edge is led out on one side of its own thickness direction, and a fabrication area is provided on the other side of the protective plate in its own thickness direction.

10. A terminal device, characterized in that, Includes the battery as described in any one of claims 1 to 9.

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