Batteries and electronic devices

Abstract

This utility model provides a battery and an electronic device, relating to the field of battery technology. The battery includes a casing, a battery protection board, and a connection assembly. At least a portion of the battery protection board is disposed inside the casing. The casing has a communicating groove extending along a first direction, connecting the interior and exterior of the casing. The connection assembly includes a flexible circuit board and a connector. The connector is fixed to the flexible circuit board, and a portion of the flexible circuit board extends into the casing through the communicating groove and connects to the battery protection board. The length of the flexible circuit board extending into the casing is adjustable. The connector is located outside the casing. Thus, by adjusting the length of the flexible circuit board extending into the casing, the position of the connector can be adjusted, allowing the connector to connect to female connectors at different system locations, thereby improving the battery's versatility. Simultaneously, since the flexible circuit board connects directly to the battery protection board, only one connector is needed, reducing costs.

Description

Technical Field

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

[0002] With the rapid development of electronic devices, the application of electronic devices, especially mobile devices such as laptops, is becoming increasingly widespread.

[0003] In electronic devices, batteries need to be connected to the system. There are generally two ways to connect the battery to the system. In the first method, a female connector is soldered onto the battery protection board, and the system also has a female connector. The two ends of a connecting wire are then plugged into the female connectors on both the battery protection board and the system. Different connecting wires can be used for different electronic devices, but this method requires two connectors, increasing costs. In the second method, a terminal wire is used. One end of the terminal wire is soldered to the battery protection board, and the other end is connected to the male connector. The male connector is then inserted into the female connector on the system. In this method, the terminal wire is fixed, and the battery cannot be connected to the female connector on the system in different locations, resulting in poor battery compatibility. In other words, both existing connection methods have different drawbacks and cannot meet the requirements for connecting the battery to the system. Utility Model Content

[0004] In view of this, this application provides a battery and electronic device to solve the problem that the two existing connection methods have different defects and cannot meet the needs of battery and system connection.

[0005] According to one aspect of this application, a battery is provided, the battery including a housing, a battery protection plate and a connecting assembly, at least a portion of the battery protection plate being disposed inside the housing, the housing having a communicating groove extending along a first direction, the inside of the housing and the outside of the housing communicating through the communicating groove;

[0006] The connection assembly includes a flexible circuit board and a connector. The connector is fixed to the flexible circuit board. A portion of the flexible circuit board extends into the interior of the housing through the communicating groove and is connected to the battery protection board. The length of the flexible circuit board extending into the interior of the housing is adjustable. The connector is located outside the housing.

[0007] Preferably, the battery protection board includes components and a rigid board, the components being connected to the side of the rigid board facing away from the communicating groove in the first direction, and the flexible board being connected to the side of the rigid board facing the communicating groove in the first direction.

[0008] Preferably, the wall of the communicating groove includes a first limiting surface and a second limiting surface facing each other in a second direction, and the end of the flexible plate extends to the side of the first limiting surface opposite to the second limiting surface in the second direction, the second direction intersecting the first direction;

[0009] The end of the second limiting surface near the battery protection plate in the first direction is inclined toward the side away from the first limiting surface.

[0010] Preferably, the battery further includes a cell assembly, the housing is connected to the cell assembly on a third-direction upward side, the connector is located on the side of the cell assembly facing away from the housing on the third-direction upward side, and the third-direction intersects a plane defined by the first direction and the second direction.

[0011] Preferably, the flexible board includes a connecting portion, an extension portion, and a mounting portion connected in sequence. A portion of the connecting portion is located inside the housing, while the extension portion and the mounting portion are both located outside the housing. The connector is disposed on the mounting portion, and a portion of the extension portion is foldable.

[0012] Preferably, the dimension of the mounting portion in the second direction is greater than the dimension of the extension portion in the second direction.

[0013] Preferably, the connecting assembly further includes a reinforcing plate, which is fitted to the side of the mounting portion opposite to the connector.

[0014] Preferably, the orthographic projection of the connector on the mounting portion is located inside the orthographic projection of the reinforcing plate on the connecting portion.

[0015] Preferably, the battery further includes an adhesive, wherein the portion of the flexible plate exposed outside the housing is bonded to the housing and / or the cell assembly by the adhesive.

[0016] According to another aspect of this application, an electronic device is provided, the electronic device comprising the battery described above.

[0017] The battery of this application includes a casing, a battery protection board, and a connection assembly. At least a portion of the battery protection board is disposed inside the casing. The casing has a communicating groove extending along a first direction, and the interior and exterior of the casing are connected through the communicating groove. The connection assembly includes a flexible circuit board and a connector. The connector is fixed to the flexible circuit board, and a portion of the flexible circuit board extends into the interior of the casing through the communicating groove and connects to the battery protection board. The length of the flexible circuit board extending into the interior of the casing is adjustable, and the connector is located outside the casing. Thus, by adjusting the length of the flexible circuit board extending into the interior of the casing, the position of the connector can be adjusted, allowing the connector to connect to the female connector end of the system terminal at different locations, thereby improving the battery's versatility. Simultaneously, since the flexible circuit board is directly connected to the battery protection board, only one connector is required, reducing costs. 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 A schematic diagram of the battery's planar structure is shown when the flexible circuit board extends into the casing to the first length.

[0020] Figure 2 A three-dimensional structural diagram of the battery from one perspective is shown when the length of the flexible circuit board extending into the housing is the first length.

[0021] Figure 3 This is a three-dimensional structural diagram of the battery from another perspective when the length of the flexible circuit board extending into the casing is the first length.

[0022] Figure 4 A partial structural diagram of the battery is shown when the length of the flexible circuit extending into the casing is the first length.

[0023] Figure 5 Show Figure 4 A cross-sectional view of the battery obtained by cutting it along A-A';

[0024] Figure 6 Show Figure 5 Enlarged view of section C;

[0025] Figure 7 The diagram shows the relative positions of the flexible plate and the rigid plate from a certain angle when the length of the flexible plate extending into the shell is the first length.

[0026] Figure 8 This diagram shows the relative positions of the flexible board and the rigid board from another perspective when the flexible board extends into the housing to the first length.

[0027] Figure 9 A partial structural diagram of the battery is shown when the length of the flexible circuit extending into the casing is the second length.

[0028] Figure 10 Show Figure 9 A cross-sectional view of the battery obtained by cutting it along B-B';

[0029] Figure 11 Show Figure 10 Enlarged view of section D.

[0030] Icons: 1-Housing; 11-Mounting body; 12-Cover plate; 13-Connecting groove; 2-Connecting assembly; 21-Flexible board; 211-Connecting part; 212-Extension part; 213-Mounting part; 22-Connector; 3-Rigid board; 31-First part; 32-Second part; 4-Cell assembly; 41-Frame; 42-Cell; 43-First adhesive tape; 44-Second adhesive tape; 5-Nickel sheet; 6-Adhesive component; S1-First limiting surface; S2-Second limiting surface; L1-First direction; L2-Second direction; L3-Third direction. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The following will combine Figures 1 to 11 Describe the battery, in Figures 1 to 11 In the diagram, the first direction L1 intersects with the second direction L2, and the third direction L3 intersects with the plane defined by the first direction L1 and the second direction L2. Preferably, the intersections are perpendicular. The following description of the battery will use the example of the first direction L1, the second direction L2, and the third direction L3 being mutually perpendicular. Meanwhile, in... Figures 1 to 11 In the process, the first direction L1 is parallel to the thickness direction of the rigid plate 3 in the battery protection board, the second direction L2 is parallel to the length direction of the rigid plate 3, and the third direction L3 is parallel to the width direction of the rigid plate 3.

[0041] According to one aspect of this application, a battery is provided, comprising a housing 1, a battery protection board, and a connecting assembly 2. The battery protection board is disposed inside the housing 1. The housing 1 has a communicating groove 13 extending along a first direction L1, and the interior and exterior of the housing 1 are connected through the communicating groove 13. The connecting assembly 2 includes a flexible board 21 and a connector 22. The connector 22 is fixed to the flexible board 21, and a portion of the flexible board 21 extends into the interior of the housing 1 through the communicating groove 13 and connects to the battery protection board. The length of the flexible board 21 extending into the interior of the housing 1 is adjustable, and the connector 22 is located outside the housing 1. Thus, by adjusting the length of the flexible board 21 extending into the interior of the housing 1, the position of the connector 22 can be adjusted, allowing the connector 22 to connect to the connector female end of the system terminal at different locations, thereby improving the battery's versatility. Simultaneously, since the flexible board 21 is directly connected to the battery protection board, only one connector 22 is required, reducing costs.

[0042] Furthermore, the battery manufacturing process of this application eliminates the need for wiring and fixing of connecting wires or terminal wires, thus improving production efficiency. Simultaneously, the connection between the connecting component 2 and the female connector on the system side reduces the space occupied by the wire trough and increases the battery's energy density.

[0043] Optionally, the female connector on the system side can be the female connector on the motherboard of the electronic device.

[0044] In embodiments of this application, the battery further includes components ( Figures 1 to 11 (Not shown in the diagram) and rigid plate 3. Components can be fixed to the side of rigid plate 3 facing away from the communicating groove 13 in the first direction L1 by means of welding or other methods. Flexible plate 21 can be fixed to the side of rigid plate 3 facing the communicating groove 13 in the first direction L1 by means of welding or other methods. Since flexible plate 21 moves along rigid plate 3 when adjusting the length of flexible plate 21 extending into the housing 1, and components and flexible plate 21 are connected to different sides of rigid plate 3, interference between components and flexible plate 21 can be avoided.

[0045] Furthermore, the battery protection board also includes a nickel sheet 5, which can be fixed to the rigid plate 3 on the side opposite to the connecting groove 13 in the first direction L1 by means of welding or other methods.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, the battery cell assembly 4 includes a frame 41 and battery cells 42. The housing 1 includes a mounting body 11 and a cover plate 12. The mounting body 11 is located on one side of the frame 41 in the third direction L3. The mounting body 11 has an opening, and the cover plate 12 covers the opening. A connecting groove 13 is formed on the cover plate 12, which penetrates the cover plate 12 along the first direction L1. The battery cells 42 are mounted on the frame 41. The number of battery cells 42 in the battery can be selected according to needs. The tab of each battery cell 42 is connected to the rigid plate 3.

[0047] Optionally, the rigid plate 3 can be entirely located inside the housing 1. In this case, the tabs of the battery cell 42 can be connected to the nickel sheet 5 on the rigid plate 3 located inside the housing 1 via connectors (e.g., copper sheets). Alternatively, the rigid plate 3 can be partially located inside the housing 1. In this case, another part of the rigid plate 3 extends into the frame 41. The tabs of the battery cell 42 near the part of the rigid plate 3 that extends into the frame 41 can be directly connected to the nickel sheet 5 on the part of the rigid plate 3 that extends into the frame 41. The tabs of the other battery cells 42 can be connected to the nickel sheet 5 on the part of the rigid plate 3 located inside the housing 1 via connectors.

[0048] Optionally, the mounting body 11 and the frame 41 are integrally formed, and the mounting body 11 and the cover plate 12 can be connected by snap-fit, screw connection or other means.

[0049] In addition, the battery cell assembly 4 also includes a first adhesive tape 43 and a second adhesive tape 44. For any one battery cell 42, the two sides of the battery cell 42 in the first direction L1 are respectively bonded to the first adhesive tape 43 and the second adhesive tape 44.

[0050] by Figure 4 Taking the battery shown as an example, the battery contains three cells 42, such as... Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the rigid plate 3 is T-shaped. The first part 31 of the rigid plate 3 is located inside the housing 1, and the second part 32 extends between the first battery cell 42 and the second battery cell 42. The tabs of the first battery cell 42 and the second battery cell 42 are connected to the nickel sheet 5 on the second part 32. The tab of the third battery cell 42 is connected to the nickel sheet 5 on the first part 31 through a connector. The three battery cells 42 are bonded to the same first adhesive tape 43 on the side opposite to the flexible plate 21 in the first direction L1, the first battery cell 42 and the second battery cell 42 are bonded to the same second adhesive tape 44, and the third battery cell 42 is bonded to another second adhesive tape 44.

[0051] In addition, such as Figure 3 As shown, connector 22 is located on the side of the cell assembly 4 facing away from housing 1 on the third direction L3, which enables connector 22 to meet the connection requirements with the connector female end of the system end located on the side of the cell assembly 4 facing away from housing 1 on the third direction L3.

[0052] Optionally, the flexible board 21 can be connected to the rigid board 3 by welding, and the end of the flexible board 21 extends to one side of the connecting groove 13 in the second direction L2.

[0053] Figures 4 to 8 The diagram shows the relative positions of the flexible plate 21 and the rigid plate 3 when the flexible plate 21 extends into the housing 1 to the first length. Figures 9 to 11 The diagram shows the relative positions of the flexible board 21 and the rigid board 3 when the length of the flexible board 21 extending into the housing 1 is the second length. The second length is greater than the first length. When the flexible board 21 is in the above two states, the connector 22 is in two different positions, which can meet the connection requirements of the female connector end of the system end in two different positions. When the length of the flexible board 21 extending into the housing 1 changes from the first length to the second length, the flexible board 21 can be pushed, so that the length of the flexible board 21 extending into the housing 1 through the connecting groove 13 increases. At this time, the part of the flexible board 21 that newly enters the housing 1 can extend towards the side of the connecting groove 13 in the second direction L2 opposite to the end of the flexible board 21 and fit against the rigid board 3.

[0054] Preferably, the wall of the connecting groove 13 includes a first limiting surface S1 and a second limiting surface S2 facing each other in the second direction L2. The first limiting surface S1 is perpendicular to the second direction L2, and the second limiting surface S2 is inclined in the first direction L1 towards the side away from the first limiting surface S1 at the end near the rigid plate 3. The end of the flexible plate 21 is located on the same side of the first limiting surface S1 in the second direction L2. When the length of the flexible plate 21 extending into the housing 1 increases, a force can be applied to the flexible plate 21 towards the side where the second limiting surface S2 is located, so that the part of the flexible plate 21 newly entering the housing 1 extends towards the side of the connecting groove 13 in the second direction L2 away from the end of the flexible plate 21. During the movement of the flexible plate 21, the flexible plate 21 contacts the second limiting surface S2. Setting the second limiting surface S2 so that the end near the rigid plate 3 is inclined towards the side away from the first limiting surface S1 can guide the movement of the flexible plate 21, thereby improving the smoothness when adjusting the length of the flexible plate 21 extending into the housing 1.

[0055] like Figure 6 and Figure 11 As shown, the battery also includes an adhesive 6, through which the portion of the flexible circuit board 21 exposed outside the housing 1 is bonded to the housing 1 and / or the cell assembly 4. Thus, after adjusting the dimensions of the flexible circuit board 21 extending into the housing 1, the adhesive 6 can secure the flexible circuit board 21 in place.

[0056] Optionally, the adhesive 6 includes a first adhesive surface and a second adhesive surface that are opposite to each other in the thickness direction of the adhesive 6. The first adhesive surface is bonded to the flexible board 21, and the second adhesive surface may be bonded only to the cover plate 12, or only to the second adhesive tape 44, or the second adhesive surface may be bonded to both the cover plate 12 and the second adhesive tape 44.

[0057] Preferably, the adhesive component 6 is double-sided adhesive.

[0058] In the embodiments of this application, such as Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9As shown, the flexible circuit board 21 includes a connecting portion 211, an extension portion 212, and a mounting portion 213. A portion of the connecting portion 211 is located inside the housing 1, while the other portion is exposed outside the housing 1. The extension portion 212 extends along a third direction L3. One end of the extension portion 212 along the third direction L3 is connected to the connecting portion 211, and the other end of the extension portion 212 along the third direction L3 extends to the side of the battery assembly 4 facing away from the housing 1 along the third direction L3 and connects to the mounting portion 213. A connector 22 is disposed on the mounting portion 213. The connector 22 located on the mounting portion 213 is located on the side of the battery assembly 4 facing away from the housing 1 along the third direction L3. A portion of the extension portion 212 is foldable. Thus, the position of the connector 22 along the third direction L3 can be adjusted by folding the extension portion 212 to meet the requirements of the connector female end at the system end.

[0059] Preferably, the size of the mounting portion 213 in the second direction L2 is larger than the size of the extension portion 212 in the second direction L2, so that the area of ​​the extension portion 212 is smaller, which can reduce the cost of the flexible board 21.

[0060] Preferably, the first adhesive surface of the adhesive 6 is bonded to the extension 212, and the second adhesive surface of the adhesive 6 is bonded to the cover plate 12 and the first adhesive 6 respectively. In this case, the fixed area of ​​the flexible plate 21 is larger, which can improve the stability of fixing the flexible plate 21.

[0061] Optionally, the battery also includes a reinforcing plate. Figures 1 to 11 (Not shown in the image), the reinforcing plate is attached to the side of the mounting part 213 opposite to the connector 22. In this way, the structural strength of the mounting part 213 is increased, the difficulty of inserting and removing the connector 22 is reduced, the risk of damage to the connector 22 due to difficulty in insertion and removal is reduced, and the reliability and service life of the connection assembly 2 are improved.

[0062] Optionally, the reinforcing plate may completely cover the side of the mounting portion 213 facing away from the connector 22, or the reinforcing plate may only cover a portion of the mounting portion 213. In this case, the orthographic projection of the connector 22 on the mounting portion 213 is located inside the orthographic projection of the reinforcing plate on the mounting portion 213. Thus, with reinforcing plates provided at the corresponding positions of the connector 22 on the mounting portion 213, the structural strength of the portion of the mounting portion 213 corresponding to the mounting position of the connector 22 is ensured, and the smoothness of connector 22 insertion and removal is improved.

[0063] Preferably, the reinforcing plate is a steel sheet.

[0064] According to another 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.

[0065] Alternatively, the electronic device can be a laptop computer.

[0066] 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. A battery, characterized by, The battery includes a housing, a battery protection plate, and a connecting assembly. At least a portion of the battery protection plate is disposed inside the housing. The housing has a communicating groove that extends along a first direction, and the interior and exterior of the housing are connected through the communicating groove. The connection assembly includes a flexible circuit board and a connector. The connector is fixed to the flexible circuit board. A portion of the flexible circuit board extends into the interior of the housing through the communicating groove and is connected to the battery protection board. The length of the flexible circuit board extending into the interior of the housing is adjustable. The connector is located outside the housing.

2. The battery of claim 1, wherein, The battery protection board includes a rigid board and components. The components are connected to the rigid board on the side opposite to the connecting groove in the first direction, and the flexible board is connected to the rigid board on the side facing the connecting groove in the first direction.

3. The battery of claim 1, wherein, The wall of the communicating groove includes a first limiting surface and a second limiting surface facing each other in a second direction. The end of the flexible plate extends to the side of the first limiting surface opposite to the second limiting surface in the second direction, and the second direction intersects the first direction. The end of the second limiting surface near the battery protection plate in the first direction is inclined toward the side away from the first limiting surface.

4. The battery of claim 3, wherein, The battery also includes a cell assembly, the housing is connected to the cell assembly on a third-direction upward side, the connector is located on the side of the cell assembly facing away from the housing on the third-direction upward side, the third-direction intersecting a plane defined by the first direction and the second direction.

5. The battery of claim 4, wherein, The flexible board includes a connecting part, an extension part, and a mounting part connected in sequence. A portion of the connecting part is located inside the housing, while the extension part and the mounting part are both located outside the housing. The connector is disposed on the mounting part, and a portion of the extension part is foldable.

6. The battery of claim 5, wherein, The dimension of the mounting portion in the second direction is greater than the dimension of the extension portion in the second direction.

7. The battery of claim 5, wherein, The connecting assembly also includes a reinforcing plate, which is fitted to the side of the mounting portion opposite to the connector.

8. The battery of claim 7, wherein, The orthographic projection of the connector on the mounting portion is located inside the orthographic projection of the reinforcing plate on the connecting portion.

9. The battery of claim 5, wherein, The battery also includes an adhesive, through which the portion of the flexible circuit board exposed outside the housing is bonded to the housing and / or the cell assembly.

10. An electronic device, comprising: The electronic device includes the battery according to any one of claims 1-9.

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