Battery cell, battery and electronic equipment
By dividing the battery cell tabs into connection groups and packaging groups, the problem of insufficient space for battery protection board components is solved, thereby reducing the length and manufacturing cost of the battery protection board and minimizing the space occupied by the battery in electronic devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNWODA ELECTRONICS CO LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-17
AI Technical Summary
The increased number of tabs in the battery cell reduces the space for the battery protection board, which in turn increases the length of the battery protection board and the manufacturing cost.
The tabs are divided into a connection group and a packaging group. The tabs of the connection group extend from inside the packaging film and connect to the battery protection board. The tabs of the packaging group are covered inside the packaging film, reducing the number of electrical connectors and increasing the space for component placement.
By reducing the number of electrical connectors, the length and manufacturing cost of the battery protection board are reduced, thus minimizing the space occupied by the battery in electronic devices.
Smart Images
Figure CN224138221U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery cell, battery, and electronic device. Background Technology
[0002] With the development of battery technology, battery cells can have three or more tabs, including at least one positive tab and at least one negative tab. The battery also includes a battery protection board, which has nickel plates in the same number as the tabs. These nickel plates connect to the tabs, enabling the connection between the battery protection board and the battery cell.
[0003] However, the increased number of tabs in a battery cell leads to a corresponding increase in the number of nickel plates in the battery protection board, thus reducing the space available for component placement on the board. To ensure sufficient space for component placement, the length of the battery protection board must be increased, thereby raising its manufacturing cost. Utility Model Content
[0004] In view of this, this application provides a battery and electronic device to solve the problem that the length of the battery protection board increases and the manufacturing cost of the battery protection board increases in order to ensure the layout space of the battery protection board.
[0005] According to a first aspect of this application, a battery cell is provided, the battery cell including an encapsulation film and a plurality of tabs, the plurality of tabs being divided into a connection group and an encapsulation group, the connection group including at least two of the tabs, the tabs of the connection group extending from inside the encapsulation film, the tabs of the connection group being used for connection to a battery protection board, and the tabs of the encapsulation group being covered inside the encapsulation film.
[0006] Preferably, the battery cell further includes an electrode assembly, and the plurality of tabs are all connected to the electrode assembly;
[0007] The encapsulation film includes an encapsulation body, a storage component, and a top sealing edge. The electrode assembly is encapsulated inside the encapsulation body. The storage component and the top sealing edge protrude from the encapsulation body respectively. The storage component and the top sealing edge are staggered along the thickness direction of the battery cell. The storage component encloses a storage space. The tabs of the connecting group extend through the top sealing edge. The tabs in the encapsulation group are located within the storage space.
[0008] Preferably, the top sealing edge includes a first encapsulation component and a second encapsulation component, the first encapsulation component and the second encapsulation component are respectively connected to the encapsulation body, and the first encapsulation component and the second encapsulation component are stacked along the thickness direction.
[0009] Preferably, the storage component includes a storage section that extends from the encapsulation body and is connected to the first encapsulation component or the second encapsulation component, and the storage section encloses the storage space.
[0010] Preferably, the storage component includes two storage portions, which extend from the encapsulation body and are respectively connected to the first encapsulation component and the second encapsulation component. The two storage portions face each other in the thickness direction and enclose the storage space.
[0011] Preferably, the packaging body includes two reference planes that are opposite to each other in the thickness direction, and the storage part includes a positioning plane that is opposite to the storage space in the thickness direction, the positioning plane not extending beyond the reference planes.
[0012] Preferably, the encapsulation film includes a plurality of storage components, which are arranged at intervals along the width direction of the battery cell;
[0013] And / or, the number of storage spaces is less than or equal to the number of tabs in the packaging group, and each storage space is provided with at least one tab.
[0014] According to a second aspect of this application, a battery is provided, the battery comprising the aforementioned battery cell.
[0015] Preferably, the battery further includes a battery protection board, which includes a board body and a plurality of electrical connectors. The plurality of electrical connectors are all fixed on the board body, and the plurality of electrical connectors correspond one-to-one with the tabs of the connection group. The tabs of the connection group are connected to the corresponding electrical connectors.
[0016] According to a third aspect of this application, an electronic device is provided, the electronic device comprising the battery described above.
[0017] The battery cell of this application includes an encapsulation film and multiple tabs. The multiple tabs are divided into a connection group and an encapsulation group. The connection group includes at least two tabs, at least one of which is a positive tab and the other is a negative tab. The tabs of the connection group extend from within the encapsulation film and connect to the battery protection board. The tabs of the encapsulation group are covered inside the encapsulation film and are not connected to the battery protection board. Thus, the number of electrical connectors in the battery protection board for connecting to the tabs is less than the total number of tabs, increasing the layout space of the battery protection board and allowing for a reduction in the length of the battery protection board, thereby lowering the manufacturing cost of the battery protection board. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This shows a structural schematic diagram of a battery cell from one perspective;
[0020] Figure 2 This shows a structural schematic diagram of the battery cell from another perspective;
[0021] Figure 3 A schematic diagram of the battery structure in Embodiment 1 is shown;
[0022] Figure 4 A schematic diagram of the battery structure in Embodiment 2 is shown;
[0023] Figure 5 A schematic diagram of the battery structure of Embodiment 3 is shown;
[0024] Figure 6 A schematic diagram of the battery structure of Embodiment 4 is shown;
[0025] Figure 7 A schematic diagram of the battery structure of Example 5 is shown.
[0026] Icons: 1-Encapsulation film; 11-Encapsulation body; 111-Reference plane; 12-Top seal; 121-First encapsulation component; 122-Second encapsulation component; 13-Side seal; 14-Storage part; 141-Positioning plane; 2-Taper; 3-Battery protection board; 31-Printed circuit board; 32-Flexible circuit board; 33-Electrical connector; 34-Reinforcing plate; 35-Molded component; 36-Electronic component; L1-Length direction; L2-Width direction; L3-Thickness direction. Detailed Implementation
[0027] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.
[0028] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0029] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.
[0030] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0031] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0032] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.
[0033] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0034] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0035] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.
[0036] The following will combine Figures 1 to 7 This application describes the battery cells, batteries, and electronic devices, in Figures 1 to 7 In the battery cell, the length direction L1, width direction L2, and thickness direction L3 intersect each other in pairs, and the intersection can preferably be perpendicular. The following description of the battery will be based on the example of the length direction L1, width direction L2, and thickness direction L3 being perpendicular to each other.
[0037] According to the first aspect of this application, a battery cell is provided, such as... Figure 1 and Figure 2 As shown, the battery cell includes an encapsulation film 1 and multiple tabs 2. The multiple tabs 2 are divided into a connection group and an encapsulation group. The connection group includes at least two tabs 2, where at least one tab 2 is a positive tab and the other tab 2 is a negative tab. The tabs 2 of the connection group extend from inside the encapsulation film 1 and are connected to the battery protection board 3. The tabs 2 of the encapsulation group are covered inside the encapsulation film 1 and are not connected to the battery protection board 3. In this way, the number of electrical connectors 33 in the battery protection board 3 for connecting to the tabs 2 is less than the total number of tabs 2, the layout space of the battery protection board 3 is increased, and the length of the battery protection board 3 can be reduced, thereby reducing the manufacturing cost of the battery protection board 3.
[0038] Optionally, the arrangement of the tabs 2 of the connecting group and the tabs 2 of the packaging group can be selected according to the requirements. For example, the tabs 2 of the packaging group and the tabs 2 of the connecting group are arranged alternately. Or, for example, the tabs 2 of the connecting group are all arranged on one side of the top sealing edge 12 in the width direction L2, and the tabs 2 of the packaging group are all arranged on the other side of the top sealing edge 12 in the width direction L2.
[0039] In the embodiments of this application, the battery cell includes an electrode assembly, and multiple tabs 2 are connected to the electrode assembly. The number of tabs 2 can be three, four, five or more. The number of tabs 2 in the connection group can be two or more. At least one tab 2 in the connection group is a positive tab 2 and at least one tab 2 is a negative tab 2. The number of tabs 2 in the encapsulation group can be one or more.
[0040] Preferably, the number of tabs 2 in the connection group is two, one of which is a positive tab 2 and the other is a negative tab 2. In this case, the battery protection board 3 only needs to be provided with two electrical connectors 33, which fully guarantees the space for the components on the battery protection board 3.
[0041] like Figure 1 and Figure 2 As shown, the encapsulation film 1 includes a connected encapsulation body 11, a top sealing edge 12, and two side sealing edges 13. The electrode assembly is encapsulated inside the encapsulation body 11. The two side sealing edges 13 are located on both sides of the encapsulation body 11 in the width direction L2, and the top sealing edge 12 is located on one side of the encapsulation body 11 in the length direction L1. The top sealing edge 12 includes a first encapsulation member 121 and a second encapsulation member 122. The first encapsulation member 121 includes a first bonding surface on one side in the thickness direction L3, and the second encapsulation member 122 includes a second bonding surface on one side in the thickness direction L3. The first bonding surface and the second bonding surface are bonded together, such that the first encapsulation member 121 and the second encapsulation member 122 are stacked along the thickness direction L3.
[0042] Furthermore, the encapsulation film 1 also includes a storage component that protrudes from the encapsulation body 11. The storage component is offset from the top sealing edge 12 along the thickness direction L3. The storage component encloses a storage space, and the tabs 2 of the encapsulation group are located within the storage space, which prevents the tabs 2 of the encapsulation group from protruding from the encapsulation film 1.
[0043] In one embodiment of the storage component, the storage component may include a storage portion 14 extending from the encapsulation body 11. The storage portion 14 can be connected to either the first encapsulation member 121 or the second encapsulation member 122, and the storage portion 14 encloses an encapsulation space. Optionally, the number of storage components can be one or more. When there is only one storage component, the storage portion 14 can be connected to the first encapsulation member 121. In this case, the storage portion 14 protrudes relative to the first encapsulation member 121 in the thickness direction L3 toward the direction away from the second encapsulation member 122, and the storage portion 14 encloses a storage space. When there is only one storage component, the storage portion 14 can also be connected to the second encapsulation member 122. In this case, the storage portion 14 protrudes relative to the second encapsulation member 122 in the thickness direction L3 toward the direction away from the first encapsulation member 121. When there are multiple storage components... When there are two or more storage components, multiple storage parts 14 can be connected to the first encapsulation component 121, and the multiple storage parts 14 are arranged at intervals along the width direction L2. When there are two or more storage components, multiple storage parts 14 can also be connected to the second encapsulation component 122, and the multiple storage parts 14 are arranged at intervals along the width direction L2. When there are multiple storage components, some storage parts 14 can be connected to the first encapsulation component 121, and other storage parts 14 can be connected to the second encapsulation component 122, and the multiple storage parts 14 are arranged at intervals along the width direction L2.
[0044] In another embodiment of the storage component, the storage component includes two storage portions 14, each extending from the encapsulation body 11. The two storage portions 14 are respectively connected to a first encapsulation member 121 and a second encapsulation member 122. The two storage portions 14 face each other in the thickness direction L3, and enclose a storage space. The number of storage components can be one or more. When there are multiple storage components, they are spaced apart along the width direction L2.
[0045] In addition, the encapsulation body 11 includes two reference planes 111 that are opposite to each other in the thickness direction L3 of the cell; the storage part 14 includes a positioning plane 141 that is opposite to the storage space in the thickness direction L3. The positioning plane 141 does not exceed the reference plane 111. In this way, the encapsulation component can be prevented from exceeding the encapsulation body 11 in the thickness direction L3, thereby avoiding the need for the encapsulation component to occupy additional space.
[0046] When the storage component includes a storage portion 14 and the storage portion 14 is connected to the first package 121, the storage portion 14 does not exceed the positioning plane 141 located on the same side as the first package 121; when the package includes a storage portion 14 and the storage portion 14 is connected to the second package 122, the storage portion 14 does not exceed the positioning plane 141 located on the same side as the second package 122; when the package includes two storage portions 14, the storage portion 14 connected to the first package 121 does not exceed the positioning plane 141 located on the same side as the first package 121, and the storage portion 14 connected to the second package 122 does not exceed the positioning plane 141 located on the same side as the second package 122.
[0047] Furthermore, the number of storage spaces can be less than or equal to the number of tabs 2 in the packaging group, with at least one tab 2 provided in each storage space. When the number of storage spaces equals the number of tabs 2 in the packaging group, there is a one-to-one correspondence between the storage spaces and the tabs 2 in the packaging group, with the tabs 2 in the packaging group located in the corresponding storage space; when the number of storage spaces is less than the number of tabs 2 in the packaging group, at least one tab 2 is provided in each storage space, and at least one storage space may have two or more tabs 2.
[0048] According to a second aspect of this application, a battery is provided, comprising the aforementioned battery cell and a battery protection board. The battery protection board 3 includes a board body and a plurality of electrical connectors 33, all of which are fixed to the board body. Each electrical connector 33 corresponds one-to-one with a tab 2 of a connection group, and the tab 2 of the connection group is connected to its corresponding electrical connector 33. Thus, the connection between the battery protection board 3 and the battery cell is achieved through the electrical connectors 33. The number of electrical connectors 33 in the battery protection board 3 used for connection with the tabs 2 is less than the total number of tabs 2, increasing the layout space of the battery protection board 3 and allowing for a reduction in the length of the battery protection board 3. This reduces the overall volume of the battery, thereby reducing the space occupied by the battery in electronic devices.
[0049] Optionally, the electrical connector 33 can be a nickel strip, a solder pad, etc.
[0050] Optionally, the type of battery protection board 3 can be selected according to requirements. The battery protection board 3 can be a rigid-flex board, a reinforcing board 34, a SIP encapsulation board, a partial molding board, or a rigid-flex soldering board.
[0051] When the battery protection board 3 is a rigid-flex board, such as Figure 3 As shown, the battery protection board 3 includes a printed circuit board 31 and a flexible circuit board 32 that are combined together. At this time, the board body is the printed circuit board 31, and the electronic devices 36 and electrical connectors 33 are all disposed on the printed circuit board 31. The tabs 2 of the connection group extend from the top sealing edge 12 and connect to the electrical connectors 33.
[0052] When battery protection board 3 is a reinforcing board, such as Figure 4 As shown, the battery protection board 3 includes a flexible circuit board 32 and a reinforcing plate 34. At this time, the board body is the flexible circuit board 32, the electrical connector 33 and the electronic device 36 are disposed on the flexible circuit board 32, the reinforcing plate 34 is connected to the flexible circuit board 32 to reinforce the part of the flexible circuit board 32 where the electronic device 36 is disposed, and the electrode tab 2 of the connection group extends from the top sealing edge 12 and is connected to the electrical connector 33.
[0053] When battery protection board 3 is a SIP packaged board, such as Figure 5 As shown, the battery protection board 3 includes a flexible circuit board 32 and a printed circuit board 31. The flexible circuit board 32 can be soldered onto the printed circuit board 31, at which point the board body is the printed circuit board 31. Electronic components and electrical connectors 33 are respectively disposed on both sides of the printed circuit board 31. The tabs 2 of the connection group extend from the top sealing edge 12 and connect to the electrical connectors 33. The side of the printed circuit board 31 where the electronic components are located is encapsulated (the electronic components are encapsulated in a plastic package 35). Figure 5 (not shown in the image), thus forming a plastic seal 35.
[0054] When the battery protection board 3 is a partially encapsulated board, such as Figure 6 As shown, the battery protection board 3 includes a flexible circuit board 32 and a printed circuit board 31. The flexible circuit board 32 can be soldered onto the printed circuit board 31. At this time, the board body is the printed circuit board 31. Electronic components and electrical connectors 33 are arranged on the same side of the printed circuit board 31. The electronic components on the printed circuit board 31 are encapsulated (the electronic components are encapsulated in a plastic package 35). Figure 6 (not shown in the image), thus forming a plastic seal 35.
[0055] When the battery protection board 3 is a flexible-soldering board, such as Figure 7 As shown, the battery protection board 3 includes a flexible circuit board 32 and a printed circuit board 31. The flexible circuit board 32 can be soldered onto the printed circuit board 31. At this time, the board body is the printed circuit board 31. The electronic components 36 and electrical connectors 33 are all set on the printed circuit board 31. The tabs 2 of the connection group extend from the top sealing edge 12 and connect to the electrical connectors 33.
[0056] In the battery of this application, the number of electrical connectors 33 in the battery protection board 3 is less than the total number of tabs 2 in the battery cell. The space for the components of the battery protection board 3 is increased, and the length of the battery protection board 3 can be reduced, thereby reducing the manufacturing cost of the battery protection board 3.
[0057] According to a third aspect of this application, an electronic device is provided, which includes the battery described above and has the same technical effects as the battery described above, which will not be repeated here.
[0058] Alternatively, the electronic device can be a mobile phone, tablet, smartwatch, etc.
[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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. Such 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 utility model.
Claims
1. An electric cell, characterized by, The battery cell includes an encapsulation film and multiple tabs. The multiple tabs are divided into a connection group and an encapsulation group. The connection group includes at least two of the tabs. The tabs of the connection group extend from inside the encapsulation film. The tabs of the connection group are used to connect to the battery protection board. The tabs of the encapsulation group are covered inside the encapsulation film.
2. The electric cell of claim 1, wherein, The battery cell also includes an electrode assembly, and the plurality of tabs are all connected to the electrode assembly; The encapsulation film includes an encapsulation body, a storage component, and a top sealing edge. The electrode assembly is encapsulated inside the encapsulation body. The storage component and the top sealing edge protrude from the encapsulation body respectively. The storage component and the top sealing edge are staggered along the thickness direction of the battery cell. The storage component encloses a storage space. The tabs of the connecting group extend through the top sealing edge. The tabs in the encapsulation group are located within the storage space.
3. The electric cell of claim 2, wherein, The top sealing edge includes a first encapsulation component and a second encapsulation component, which are respectively connected to the encapsulation body. The first encapsulation component and the second encapsulation component are stacked along the thickness direction.
4. The electric cell of claim 3, wherein, The storage component includes a storage section that extends from the encapsulation body and is connected to the first encapsulation component or the second encapsulation component, and the storage section encloses the storage space.
5. The electric cell of claim 3, wherein, The storage component includes two storage portions, which extend from the encapsulation body and are connected to the first encapsulation component and the second encapsulation component, respectively. The two storage portions face each other in the thickness direction and enclose the storage space.
6. The cell of claim 4 or 5, wherein, The encapsulation body includes two reference planes that are opposite to each other in the thickness direction, and the storage part includes a positioning plane that is opposite to the storage space in the thickness direction, and the positioning plane does not extend beyond the reference planes.
7. The electric cell of any one of claims 2-5, wherein, The encapsulation film includes multiple storage components, which are spaced apart along the width direction of the battery cell. And / or, the number of storage spaces is less than or equal to the number of tabs in the packaging group, and each storage space is provided with at least one tab.
8. A battery, characterized by The battery comprises the cell according to any one of claims 1-7.
9. The battery of claim 8, wherein, The battery also includes a battery protection board, which includes a board body and multiple electrical connectors. The multiple electrical connectors are all fixed on the board body, and each of the multiple electrical connectors corresponds to a tab of the connection group. The tabs of the connection group are connected to the corresponding electrical connectors.
10. An electronic device, comprising: The electronic device includes the battery as described in claim 9.