Battery and electric appliance

Abstract

The application relates to the technical field of batteries, in particular to a battery and an electric appliance, which comprise a battery protection plate and a battery core, the battery core has a head end face and a top sealing edge leading out from the head end face along a first direction, the battery protection plate comprises a first plate body, the first plate body comprises a first plate part and a second plate part connected with each other, the first plate part is attached to the head end face, and the second plate part is attached to the top sealing edge. According to the battery and the electric appliance provided by the application, the space utilization rate of the battery in the first direction is effectively improved, the process of laying foam is saved, the assembly efficiency of the battery is improved, the stability of the overall structure of the battery is improved, the space for wiring and arranging components and devices of the battery protection plate is increased, and the heat dissipation performance of the battery is improved.

Description

Technical Field

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

[0002] In modern battery packaging, foam is typically placed between the end of the cell and the rigid board (i.e., PCB, printed circuit board) to protect the end of the cell by covering it with foam.

[0003] However, with the increasing urgency of improving battery energy density and scaling up production efficiency, the limitations of traditional foam placement solutions are becoming increasingly apparent. On the one hand, the presence of foam inevitably occupies valuable space along the length of the cell, restricting further improvements in battery system energy density. On the other hand, its placement process involves precise alignment of multiple layers of materials, complex attachment operations, and quality inspection. This not only requires significant manual intervention but is also prone to quality problems such as positional misalignment and residual air bubbles, becoming a key bottleneck affecting the efficiency and yield of automated battery assembly. Innovative solutions are urgently needed to overcome the constraints of existing technologies. Utility Model Content

[0004] The purpose of this application is to provide a battery and electrical appliance that can, to a certain extent, solve the technical problems in the prior art where setting up foam not only occupies space in the length direction of the battery cell, but also that the process of laying foam greatly affects the efficiency of battery assembly.

[0005] According to a first aspect of this application, a battery is provided, including a battery protection board and a battery cell, the battery cell having a head end face and a top sealing edge extending from the head end face along a first direction, the battery protection board including a first plate body, the first plate body including a first plate portion and a second plate portion connected to each other, the first plate portion being attached to the head end face, and the second plate portion being attached to the top sealing edge.

[0006] Preferably, the battery protection board further includes a second plate body, which is electrically connected to the first plate body.

[0007] Preferably, the first plate is a rigid plate, and the second plate is a flexible plate.

[0008] Preferably, the top sealing edge has a lead-out tab;

[0009] A nickel sheet is provided on the side of the first plate that is opposite to the top sealing edge, and the electrode tab is electrically connected to the nickel sheet.

[0010] Preferably, the first plate extends along a second direction, which intersects the first direction;

[0011] The second plate is connected to one end of the first plate in the second direction.

[0012] Preferably, the first plate is a flexible plate, and the second plate is a rigid plate.

[0013] Preferably, both the first plate and the second plate extend along a second direction, which intersects the first direction;

[0014] The second plate is disposed within the space enclosed by the first plate and the second plate.

[0015] Preferably, the top sealing edge has a lead-out tab;

[0016] A nickel sheet is provided on the side of the first plate facing the top sealing edge, and the electrode tab is electrically connected to the nickel sheet.

[0017] Preferably, it further includes:

[0018] Insulating tape is wrapped around the outside of both the battery protection board and the top sealing edge, with one end of the insulating tape attached to the side of the top sealing edge opposite to the first plate portion, and the other end of the insulating tape wrapped around the end of the second plate portion away from the first plate portion.

[0019] The second aspect of this application also provides an electrical appliance, which is the battery described in any of the above embodiments, and thus has all the beneficial technical effects of the battery, which will not be repeated here.

[0020] Compared with the prior art, the beneficial effects of this application are as follows:

[0021] The battery protection board provided in this application, by attaching a first plate portion of the first plate body to the head end face and attaching a second plate portion of the first plate body to the top sealing edge, effectively protects the head end face by shielding it with the first plate portion. This avoids the need for foam structures in existing solutions, effectively improving the space utilization of the battery in the first direction and saving the foam laying process, thus improving battery assembly efficiency. Furthermore, the attachment of the first plate portion to the head end face and the second plate portion to the top sealing edge allows the battery protection board to fit tightly against specific parts of the battery cell, ensuring a close fit with the cell. The matching structural features help improve the overall stability of the battery structure, prevent loosening or displacement between the protection board and the battery cell, enhance the mechanical performance of the battery, and not only effectively increase the layout space of the battery protection board, but also effectively increase the contact area between the battery protection board and the battery cell. This effectively increases the space for wiring and component placement on the battery protection board, enhances the functionality of the battery protection board, and facilitates heat conduction and dissipation. The heat generated by the battery cell during operation can be conducted to the outside through the battery protection board, which helps improve the heat dissipation performance of the battery and prevents the battery cell from being affected by overheating, thus reducing its performance and lifespan.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is an isometric structural diagram of the battery provided in Embodiment 1 of this application;

[0025] Figure 2 for Figure 1 A magnified structural diagram of the battery at point A is provided.

[0026] Figure 3 This is a cross-sectional view of the battery provided in Embodiment 1 of this application;

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the battery at point B is provided.

[0028] Figure 5 This is an isometric structural diagram of the battery provided in Embodiment 2 of this application;

[0029] Figure 6 for Figure 5 A magnified structural diagram of the battery at point C is provided.

[0030] Figure 7 This is a cross-sectional view of the battery provided in Embodiment 2 of this application;

[0031] Figure 8 for Figure 7 The provided diagram shows an enlarged view of the battery structure at point D.

[0032] Figure label:

[0033] 1-First plate body; 11-First plate section; 12-Second plate section; 2-Second plate body; 3-Battery cell; 31-Top sealing edge; 311-Electric tab; 32-Head end face; 4-Easy-tear sticker; 5-Insulating tape.

[0034] F1 - First direction; F2 - Second direction; F3 - Third direction. Detailed Implementation

[0035] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0036] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0037] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0038] 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.

[0039] In the description of this application, it should be noted that, unless otherwise expressly 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 based on the specific circumstances.

[0040] The following reference Figures 1 to 8 This application describes batteries and electrical appliances according to some embodiments.

[0041] See Figures 1 to 8 As shown, an embodiment of the first aspect of this application provides a battery including a battery protection board and a battery cell. The battery cell has a head end face 32 and a top sealing edge 31 extending from the head end face 32 along a first direction. The battery protection board includes a first plate body 1, which includes a first plate portion 11 and a second plate portion 12 connected to each other. The first plate portion 11 is attached to the head end face 32, and the second plate portion 12 is attached to the top sealing edge 31.

[0042] According to the battery protection board provided by the above technical features, by attaching the first plate portion 11 of the first plate body 1 to the head end face 32 and attaching the second plate portion 12 of the first plate body 1 to the top sealing edge 31, on the one hand, the head end face 32 can be effectively protected by the shielding of the head end face 32 by the first plate portion 11, thereby avoiding the need for the foam structure in the existing solution, effectively improving the space utilization of the battery in the first direction F1, saving the process of laying foam, and improving the assembly efficiency of the battery; on the other hand, the attachment of the first plate portion 11 to the head end face 32 and the attachment of the second plate portion 12 to the top sealing edge 31 can make the battery protection board fit tightly. The specific parts of cell 3 are adapted to the structural characteristics of cell 3, which helps to improve the stability of the overall battery structure, avoids loosening or displacement between the protection board and cell 3, enhances the mechanical performance of the battery, and not only effectively increases the arrangement space of the battery protection board, but also effectively increases the contact area between the battery protection board and cell 3. This effectively increases the space for wiring and component placement on the battery protection board, enhances the functionality of the battery protection board, and facilitates heat conduction and dissipation. The heat generated by cell 3 during operation can be conducted to the outside through the battery protection board, which helps to improve the heat dissipation performance of the battery and prevents cell 3 from being affected by overheating, thus reducing its performance and lifespan.

[0043] like Figures 1 to 8As shown in the figure, F1 can be an example of the first direction F1 described above. For ease of description, two directions that intersect each other on the plane intersecting with the first direction F1 are defined as the second direction F2 and the third direction F3, where F2 shown in the figure can be an example of the second direction F2, and F3 shown in the figure can be an example of the third direction F3. Preferably, the second direction F2 and the third direction F3 are perpendicular to each other, and the first direction F1 is perpendicular to the plane defined by the second direction F2 and the third direction F3, in order to accommodate most rectangular batteries.

[0044] It should be noted that, as Figures 1 to 8 As shown in the figure, an example is shown where the top sealing edge 31 is parallel to the plane confirmed by the first direction F1 and the second direction F2, and an example is shown where the head end face 32 is parallel to the plane confirmed by the first direction F1 and the third direction F3. In other words, the cross-section of the first plate 1 can be "L" shaped.

[0045] Preferably, such as Figure 1 and Figure 5 As shown, the battery protection board may further include a second board 2, which is electrically connected to the first board 1. One of the first board 1 and the second board 2 may be a rigid board (i.e., PCB, Printed Circuit Board), and the other of the first board 1 and the second board 2 may be a flexible board (i.e., FPC, Flexible Printed Circuit Board), so as to be suitable for the structure of most battery protection boards and facilitate the external connection of the battery cell 3.

[0046] like Figures 1 to 4 As shown in the figure, this is an example of Embodiment 1, where the first board 1 is a rigid board and the second board 2 is a flexible board. The following will describe the battery protection board in detail using this Embodiment 1 as an example.

[0047] Correspondingly, such as Figures 1 to 4 As shown, the cross-section of the aforementioned rigid plate is L-shaped.

[0048] Preferably, such as Figures 1 to 4 As shown, the top sealing edge 31 can lead out a tab 311. A nickel sheet is provided on the side of the first plate portion 11 opposite to the top sealing edge 31, and the tab 311 is electrically connected to the nickel sheet. On the one hand, the electrical connection between the tab 311 and the nickel sheet is effectively realized, and the electrical connection between the cell 3 and the battery protection board is achieved. On the other hand, by setting the nickel sheet on the side opposite to the top sealing edge 31, the space enclosed by the first plate portion 11 and the second plate portion 12 can be effectively utilized to set the nickel sheet, thereby improving the space utilization rate. Moreover, the tightness of the fit between the first plate portion 11 and the top sealing edge 31 is ensured.

[0049] Preferably, such as Figure 2 As shown, the first plate 1 can extend along the second direction F2, and the second plate 2 can be connected to one end of the first plate 1 in the second direction F2, so as to realize the external connection of the battery cell 3 through the second plate 2.

[0050] Preferably, such as Figure 2 As shown, the second plate 2 can be connected to the side of the back-to-top sealing edge 31 of the first plate 11, so as to utilize the space enclosed by the first plate 11 and the second plate 12 to set the second plate 2, thereby improving the battery space utilization rate.

[0051] like Figures 5 to 8 As shown in the figure, this is an example of Embodiment 2, where the first board 1 is a flexible board and the second board 2 is a rigid board. The following will describe the battery protection board in detail using this Embodiment 2 as an example.

[0052] Correspondingly, such as Figures 5 to 8 As shown, the cross-section of the aforementioned flexible board is L-shaped.

[0053] Preferably, such as Figure 5 and Figure 6 As shown, both the first plate 1 and the second plate 2 can extend along the second direction F2. The second plate 2 is disposed within the space enclosed by the first plate portion 11 and the second plate portion 12 to improve the space utilization of the battery protection board.

[0054] Preferably, such as Figure 7 and Figure 8 As shown, the top sealing edge 31 can lead to a tab 311. Preferably, as... Figure 7 and Figure 8 As shown, a nickel sheet can be provided on the side of the first plate portion 11 facing the top sealing edge 31. The tab 311 is electrically connected to the nickel sheet to accommodate the placement of components on the side of the first plate portion 11 facing the top sealing edge 31, thereby ensuring the tightness of the fit between the first plate body 1 and the second plate body 2, and thus ensuring the stability of the placement of the first plate body 1 and the second plate body 2.

[0055] Preferably, such as Figure 4 and Figure 8 As shown, the battery may also include insulating tape 5, which can cover the outer side of both the battery protection plate and the top sealing edge 31. One end of the insulating tape 5 is attached to the side of the top sealing edge 31 that is away from the first plate portion 11, and the other end of the insulating tape 5 is covered to the end of the second plate portion 12 that is away from the first plate portion 11. In this way, the insulation of the battery head is effectively improved by the covering effect of the insulating tape 5.

[0056] Preferably, such as Figure 1 and Figure 5As shown, the battery may also include an easy-tear sticker 4. The battery cell 3 has a first side and a second side facing each other in a third direction. The middle part of the easy-tear sticker 4 is attached to the first side. The two ends of the easy-tear sticker 4 extend from the two ends of the first side in a second direction to the second side, so as to facilitate the loading and unloading of the battery relative to the battery compartment by lifting the two ends of the easy-tear sticker 4.

[0057] Preferably, such as Figure 1 and Figure 5 As shown, the top sealing edge 31 can be disposed on the side of the head end face 32 near the first side, and the battery protection plate can be disposed on the side of the top sealing edge 31 opposite to the first side, so that when the battery is installed in the battery slot, the battery protection plate can be located on the side where the opening of the battery slot is located, so as to facilitate the electrical connection and maintenance of the battery and the electronic device.

[0058] The second aspect of this application also provides an electrical appliance, which is the battery described in any of the above embodiments, and thus has all the beneficial technical effects of the battery, which will not be repeated here.

[0059] Preferably, the electrical appliance may include the aforementioned battery compartment.

[0060] Alternatively, the aforementioned electrical appliances may be electronic devices such as mobile phones and computers.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended 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. 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 application.

Claims

1. A battery, comprising a battery protection board and a battery cell, the battery cell having a head end face and a top sealing edge extending from the head end face along a first direction, characterized in that, The battery protection board includes a first board body, which includes a first plate portion and a second plate portion connected to each other. The first plate portion is attached to the head end face, and the second plate portion is attached to the top sealing edge.

2. The battery according to claim 1, characterized in that, The battery protection board also includes a second plate, which is electrically connected to the first plate.

3. The battery of claim 2, wherein, The first plate is a rigid plate, and the second plate is a flexible plate.

4. The battery according to claim 3, characterized in that, The top sealing edge has a lead-out tab; A nickel sheet is provided on the side of the first plate that is opposite to the top sealing edge, and the electrode tab is electrically connected to the nickel sheet.

5. The battery according to claim 3, characterized in that, The first plate extends along a second direction, which intersects the first direction; The second plate is connected to one end of the first plate in the second direction.

6. The battery according to claim 2, characterized in that, The first plate is a flexible plate, and the second plate is a rigid plate.

7. The battery according to claim 6, characterized in that, Both the first plate and the second plate extend along a second direction, which intersects the first direction. The second plate is disposed within the space enclosed by the first plate and the second plate.

8. The battery according to claim 6, characterized in that, The top sealing edge has a lead-out tab; A nickel sheet is provided on the side of the first plate facing the top sealing edge, and the electrode tab is electrically connected to the nickel sheet.

9. The battery according to claim 1, characterized in that, Also includes: Insulating tape is wrapped around the outside of both the battery protection board and the top sealing edge, with one end of the insulating tape attached to the side of the top sealing edge opposite to the first plate portion, and the other end of the insulating tape wrapped around the end of the second plate portion away from the first plate portion.

10. An electrical appliance, characterized in that, The battery includes any one of claims 1 to 9.

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