Battery assembly and electronic device
Patent Information
- Application Number
- CN202510352100.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-09-22
Smart Images
Figure CN122800673A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic product technology, and in particular to a battery assembly and electronic device. Background Technology
[0002] Currently, electronic devices such as mobile phones, tablets, and smart wearable devices all have batteries to facilitate portability. The larger the battery size, the larger its capacity, which in turn allows for longer battery life, supporting longer standby and usage times, and better meeting user needs.
[0003] Therefore, how to increase the size and capacity of batteries and improve the battery life of electronic devices are technical problems that need to be solved by those skilled in the art. Summary of the Invention
[0004] To address the aforementioned technical problems, this application provides a battery assembly and an electronic device that can increase the size and capacity of the battery, thereby improving the battery life of the electronic device.
[0005] In a first aspect, this application provides a battery assembly, the battery assembly comprising: a cell body, the cell body including a first sidewall; a protective member, the protective member disposed on the first sidewall and electrically connected to the cell body; a fixing block and a connecting member, the fixing block being located on one side of the protective member along the extending direction of the first sidewall; at least a portion of the connecting member being fixed to the fixing block, and the connecting member being electrically connected to the protective member.
[0006] By fixing the connector with a fixing block located on one side of the protective member (along the extension direction of the first sidewall), compared to bending the connector 180° and fixing it to the surface of the protective member away from the first sidewall, the space occupied by the connector in the direction perpendicular to the first sidewall can be reduced, freeing up more space for the electronic device. This allows the size of the battery cell body in the direction perpendicular to the first sidewall to be increased, thereby improving the battery capacity.
[0007] For example, the direction perpendicular to the first sidewall can be the X-axis direction as described below, and the extension direction of the first sidewall can be the Y-axis direction as described below.
[0008] According to the first aspect, the connector includes a first connecting portion disposed on the surface of the fixing block away from the first sidewall; the distance from the surface of the first connecting portion away from the first sidewall to the first sidewall is a first distance, and the distance from the surface of the protective member away from the first sidewall to the first sidewall is a second distance, wherein H1 < H2 + H0, H0 is the thickness of the first connecting portion in the direction perpendicular to the first sidewall, H1 is the first distance, and H2 is the second distance.
[0009] In other words, after the first connecting part is fixed to the fixing block, the distance from the surface of the first connecting part away from the first sidewall to the first sidewall is less than the distance from the first sidewall after the connector is bent 180° and fixed to the protective part. This reduces the size of the battery assembly in the direction perpendicular to the first sidewall by approximately the thickness of one connector. Furthermore, since the connector does not need to be bent 180° and because it is fixed to the fixing block, the fixing area between the connector and the fixing block is larger. Therefore, there is no need to set a limiting layer for the connector, and the size of the battery in the direction perpendicular to the first sidewall can be reduced by the thickness of one limiting layer, freeing up more space for the electronic device. This allows for further lengthening of the cell body and increasing battery capacity. Verification shows that using this solution, the size of the cell body in the direction perpendicular to the first sidewall can be increased by approximately 0.2–0.4 mm.
[0010] For example, H1 < H0 + H2 can be that the surface of the first connecting part away from the first sidewall is flush with the surface of the protective member away from the first sidewall, i.e., H2 equals H1; it can also be that the distance from the surface of the first connecting part away from the first sidewall to the first sidewall is less than the distance from the surface of the protective member away from the first sidewall to the first sidewall, i.e., H1 is less than H2; it can also be that the distance from the surface of the first connecting part away from the first sidewall to the first sidewall is greater than the distance from the surface of the protective member away from the first sidewall to the first sidewall, but the thickness of the portion of the first connecting part extending beyond the protective member is less than the thickness of the first connecting part, i.e., H1 - H2 > 0 and H1 - H2 < H0.
[0011] According to the first aspect, or any implementation of the first aspect above, the connector further includes a second connecting portion and a third connecting portion; the second connecting portion is disposed around the surface of the fixing block near the first sidewall, and one end of the second connecting portion is electrically connected to the protective member, and the other end of the second connecting portion is electrically connected to the first connecting portion; along the thickness direction of the cell body, the fixing block includes a first surface; the third connecting portion is disposed on the first surface, and the third connecting portion is electrically connected to the first connecting portion. This arrangement of the connector ensures the fixed area between the connector and the fixing block, and also facilitates the connection of the battery assembly with other structures (such as printed circuit boards).
[0012] According to the first aspect, or any implementation of the first aspect above, the protective component includes a protective plate and a connecting plate, the connecting plate being located between the protective plate and the first sidewall, and the connecting plate being electrically connected to both the battery cell body and the protective plate. That is, along the direction away from the first sidewall, the first sidewall, the connecting plate, and the protective plate are arranged sequentially, and the connecting plate is electrically connected to the protective plate and the battery cell body located on both sides thereof.
[0013] According to the first aspect, or any of the above implementations of the first aspect, the connecting plate and the connecting parts are integrally formed.
[0014] This setup simplifies the process steps.
[0015] According to the first aspect, or any implementation of the first aspect above, the connecting plate and the connector are flexible circuit boards or other bendable flexible boards, etc.
[0016] According to the first aspect, or any implementation of the first aspect above, a buffer layer is provided between the second connecting part and the first sidewall.
[0017] The buffer layer protects the connectors from damage caused by impacts between the connectors and other structures when electronic devices are dropped.
[0018] According to the first aspect, or any implementation of the first aspect above, the side surface of the fixing block facing the protective member is the first side surface, the first side surface includes a first sub-surface and a second sub-surface, and the included angle between the first sub-surface and the second sub-surface is greater than 90° and less than 180°.
[0019] For example, the included angle between the first sub-surface and the second sub-surface is 100°, 110°, 120°, 130°, 140°, 150°, 160° or 170°.
[0020] This design allows for a smooth transition at the connection between the connector and the protective component, preventing any sharp bends.
[0021] According to the first aspect, or any implementation of the first aspect above, the battery cell body includes a top seal located at the first side wall; the top seal includes a middle part and raised parts located at both ends of the middle part, the middle part is located between the first side wall and the protective member, and a fixing block is located between the raised parts and the protective member; the side surface of the fixing block facing the raised part is a second side surface, and the shape of the second side surface is similar to the shape of the raised part.
[0022] This design, along the extension direction of the first sidewall, can make full use of the space between the raised part and the protective part, ensuring that the volume of the fixing block is large, thereby ensuring the bonding area between the connector and the fixing block, and ensuring that the connector is fixed more firmly.
[0023] According to the first aspect, or any implementation of the first aspect above, the fixing block includes a third side surface and a fourth side surface, both of which are parallel to the first side wall, and the fourth side surface is located on the side of the third side surface that is away from the first side wall.
[0024] This design, along the direction perpendicular to the first sidewall, fully utilizes the space between the raised part and the protective component, ensuring a larger volume of the fixing block, thereby ensuring the bonding area between the connector and the fixing block, and ensuring that the connector is fixed more firmly.
[0025] According to the first aspect, or any implementation of the first aspect above, the fixing block includes a first side surface, a third side surface, a second side surface, and a fourth side surface that are connected end to end; the first connection between the first side surface and the third side surface is arc-shaped; and / or, the second connection between the third side surface and the second side surface is arc-shaped; and / or, the third connection between the second side surface and the fourth side surface is arc-shaped; and / or, the fourth connection between the connector and the protective member is arc-shaped.
[0026] This design ensures a smooth transition at each corner of the connector when it is fixed to the fixing block, preventing any sharp bends.
[0027] According to the first aspect, or any implementation of the first aspect above, the bending radius of the arc is greater than or equal to three times the thickness of the connector.
[0028] This design ensures a smooth transition at each corner of the connector when it is fixed to the fixing block.
[0029] According to the first aspect, or any implementation of the first aspect above, an adhesive layer is provided between the fixing block and the connector. The adhesive layer includes adhesive backing or double-sided adhesive, etc., which provides a simple fixing method and is low in cost.
[0030] Secondly, this application provides an electronic device. The electronic device includes: a first housing, a printed circuit board, and a battery assembly corresponding to the first aspect and any implementation thereof; the printed circuit board and the battery cell body are located inside the first housing, and the printed circuit board is located on one side of the battery cell body; the battery cell body is electrically connected to the printed circuit board through a protective component and a connector.
[0031] The electronic device provided in this application can achieve all the effects of the aforementioned battery assembly.
[0032] According to the second aspect, the electronic device also includes a second body and a pivot structure, with the first body and the second body being rotatably connected by the pivot structure; along a direction away from the pivot structure, the battery assembly and the printed circuit board are arranged sequentially within the first body.
[0033] In other words, the electronic device provided in this application can be a small foldable electronic device, wherein the small foldable electronic device is used by the user and, when it is in a flattened state, the first and second bodies are located on the upper and lower sides of the hinge structure. Of course, this does not constitute a limitation on this application; the electronic device provided in this application can also be a large foldable electronic device, wherein the large foldable electronic device is used by the user and, when it is in a flattened state, the first and second bodies are located on the left and right sides of the hinge structure. Furthermore, the electronic device provided in this application can not only be a foldable electronic device, but also a candybar-style electronic device.
[0034] For example, when the second body also includes a printed circuit board and a battery assembly, the battery assembly can be a battery assembly in the prior art or the battery assembly of this application. Attached Figure Description
[0035] Figure 1 A schematic diagram of the front structure of an electronic device provided in an embodiment of this application;
[0036] Figure 2 A schematic diagram of the rear structure of an electronic device provided in an embodiment of this application;
[0037] Figure 3 This is a schematic diagram of the structure of an electronic device in a folded state, provided in an embodiment of this application.
[0038] Figure 4 A front view of another electronic device provided in an embodiment of this application;
[0039] Figure 5 for Figure 1 The electronic device shown is a cross-sectional view along the AA' direction;
[0040] Figure 6 for Figure 1 The diagram shows the positional relationship of some functional components within the electronic device.
[0041] Figure 7 This is a schematic diagram of the structure of a battery assembly from one perspective, provided as an embodiment of this application.
[0042] Figure 8 This is a schematic diagram of the structure of a battery cell provided in an embodiment of this application;
[0043] Figure 9 This is a schematic diagram of the structure of another battery cell provided in an embodiment of this application;
[0044] Figure 10 A schematic diagram of a battery assembly from another perspective, provided as an embodiment of this application;
[0045] Figure 11 for Figure 10 A magnified view of the CC region of the battery shown.
[0046] Figure 12 for Figure 11 A cross-sectional view along the DD' direction;
[0047] Figure 13 A diagram showing the positional relationship between the connector and the protective component provided in the embodiments of this application;
[0048] Figure 14 A diagram showing the relationship between a connecting plate and a connector provided in an embodiment of this application;
[0049] Figure 15 This is a schematic diagram of another battery assembly provided in an embodiment of this application;
[0050] Figure 16a A front view of another battery assembly provided in an embodiment of this application;
[0051] Figure 16b A schematic diagram of the back structure of another battery assembly provided in an embodiment of this application;
[0052] Figure 17 A positional relationship diagram of the battery assembly and printed circuit board provided in an embodiment of this application;
[0053] Figure 18 This is a schematic diagram of the structure of a fixing block provided in an embodiment of this application;
[0054] Figure 19a A positional relationship diagram of a fixing block and a connector from one viewpoint, provided for an embodiment of this application;
[0055] Figure 19b A diagram showing the positional relationship between a fixing block and a connector from another perspective, as provided in an embodiment of this application;
[0056] Figure 20 Another positional relationship diagram of the battery assembly and printed circuit board provided in the embodiments of this application;
[0057] Figure 21 Another positional relationship diagram of the fixing block and the connector provided in the embodiments of this application from a certain perspective;
[0058] Figure 22 A diagram showing the positional relationship between the fixing block and the adhesive layer provided in an embodiment of this application;
[0059] Figure 23 A schematic diagram of the back structure of another battery assembly provided in an embodiment of this application;
[0060] Figure 24 for Figure 23 Enlarged view of the EE region of the battery module;
[0061] Figure 25 This is a top view of a fixing block and connector provided in an embodiment of this application. Detailed Implementation
[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0063] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.
[0064] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.
[0065] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0066] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.
[0067] This application provides an electronic device, which can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), in-vehicle computer, television, smart wearable device, smart home device, or any other device including a battery. The electronic device can be a candybar form factor or a foldable form factor; this application does not impose any special limitations on the specific type and form of the electronic device. For ease of explanation, the following description uses a mobile phone, specifically a foldable mobile phone, as an example.
[0068] See Figure 1 and Figure 2 , Figure 1 This is a front view of an electronic device provided in an embodiment of this application. Figure 2 This is a schematic diagram of the back structure of an electronic device provided in an embodiment of this application. The foldable mobile phone 100 includes a flexible display screen (also known as a foldable screen or flexible screen) 10.
[0069] The flexible display screen 10 is a flexible display screen. The flexible display screen 10 may include an organic light-emitting diode (OLED) display screen. OLED displays do not require a backlight module, and the substrate in the OLED display screen can be made of a flexible resin material, such as polyethylene terephthalate (PET), giving the OLED display screen a bendable characteristic. Of course, the type of flexible display screen 10 is not limited to OLED displays; any display screen that can be bent is within the scope of protection of this application, such as liquid crystal display (LCD) screens, LED displays (e.g., including Micro-LED displays, Mini-LED displays), etc.
[0070] It should be noted that, in order to clearly describe the subsequent structural features and their positional relationships, the positional relationships of the structures within the foldable phone 100 are defined using the X-axis, Y-axis, and Z-axis directions. Specifically, the X-axis direction represents the width of the foldable phone 100 when unfolded, the Y-axis direction represents the length of the foldable phone 100 when unfolded, and the Z-axis direction represents the thickness of the foldable phone 100 when unfolded.
[0071] See also Figure 1 and Figure 2The foldable phone 100 also includes a first body 20, a second body 30, and a hinge structure 40. Along the Y-axis, the first body 20 and the second body 30 are located on either side of the hinge structure 40, and the hinge structure 40 is connected to both the first body 20 and the second body 30. The first body 20, the hinge structure 40, and the second body 30 can support the flexible display screen 10. The first body 20 and the second body 30 can rotate around the hinge structure 40, causing the flexible display screen 10 to be in a folded state (e.g., folded). Figure 3 (as shown) or in unfolded state (such as) Figure 1 As shown in the figure, this means that the foldable phone 100 is in a folded or unfolded state.
[0072] It is understandable that the foldable phone 100 can have two states during use: a folded state and an unfolded state. In the unfolded state, the first body 20 and the second body 30 are roughly on the same plane, making the flexible display screen 10 roughly flat. Users can operate the flexible display screen 10, and the flexible display screen 10 can display images or videos, achieving a large-screen display and improving the user's viewing experience. Furthermore, when the foldable phone 100 is in the unfolded state, the first body 20 and the second body 30 can rotate towards each other (i.e., relative rotation where the first body 20 and the second body 30 move closer to each other), thereby causing the hinge structure 40 to fold. During the folding process, the ends of the first body 20 and the second body 30 away from the hinge structure 40 move closer to each other until they contact, at which point the foldable phone 100 is in the folded state. In this folded state, the foldable phone 100 is easy to store and carry. Furthermore, when the foldable phone 100 is in a folded state, the first body 20 and the second body 30 can rotate (in the opposite direction to the rotation direction when folded), thereby causing the hinge structure 40 to unfold, so that the foldable phone 100 is in an unfolded state.
[0073] See also Figure 1The flexible display screen 10 can be divided into different display segments. When folded, the part of the flexible display screen 10 that bends is the bent display segment 12, wherein the bent display segment 12 is opposite to the pivot structure 40 (that is, the projection of the bent display segment 12 on the plane formed by the X-axis and Y-axis overlaps with the projection of the pivot structure 40 on the plane formed by the X-axis and Y-axis). In the flexible display screen 10, the parts located on both sides of the bent display segment 12 are the first flat display segment 11 and the second flat display segment 13, respectively. The first flat display segment 11 is opposite to the first body 20 (that is, the projection of the first flat display segment 11 on the plane formed by the X-axis and Y-axis overlaps with the projection of the first body 20 on the plane formed by the X-axis and Y-axis), and the second flat display segment 13 is opposite to the second body 30 (that is, the projection of the second flat display segment 13 on the plane formed by the X-axis and Y-axis overlaps with the projection of the second body 30 on the plane formed by the X-axis and Y-axis). During the rotation of the pivot structure 40, the foldable phone 100 can be changed from an unfolded state to a folded state. That is, the angle between the plane where the first flat display segment 11 is located and the plane where the second flat display segment 13 is located can be changed as the bending display segment 12 is bent, for example, from 180° to 0°.
[0074] It should be noted that the foldable phone 100 can fold at multiple locations. Accordingly, the foldable phone 100 may include multiple hinge structures 40 and multiple bodies. For example, it may include two hinge structures 40 and three bodies, with adjacent bodies connected by a hinge structure 40. In this way, the foldable phone 100 has two folding positions. Thus, the structural mechanism includes at least one hinge structure 40 and at least two bodies, with adjacent bodies connected by a hinge structure 40. For ease of explanation, this application embodiment uses a foldable phone 100 including one hinge structure 40 and two bodies (i.e., the first body 20 and the second body 30) as an example for illustration.
[0075] It should also be noted that, Figure 1 This description uses a foldable phone 100 folded horizontally (i.e., along the X-axis), meaning the foldable phone 100 forms two screens (upper and lower) when folded, as an example, but it does not constitute a limitation of this application. In other optional embodiments of this application, such as Figure 4 As shown, the foldable phone 100 can also be folded vertically (i.e., along the Y-axis), meaning that when folded, the foldable phone 100 forms two screens, left and right. The following explanation uses the foldable phone 100 folded horizontally as an example. Here, "up and down" refers to the position of the first flat display segment 11 and the second flat display segment 13 relative to the bent display segment 12 when the user uses the horizontally folded foldable phone 100. "Left and right" refers to the position of the first flat display segment 11 and the second flat display segment 13 relative to the bent display segment 12 when the user uses the vertically folded foldable phone 100.
[0076] See Figure 5 , Figure 5 for Figure 1 The electronic device shown is a cross-sectional view along the AA' direction. Along the Z-axis, the flexible display screen 10 includes a display panel 10a and a cover plate 10b located on one side of the display panel 10a. The cover plate 10b is used to protect the display panel 10a and improve the scratch resistance and impact resistance of the display panel 10a, etc.
[0077] The first fuselage 20 includes a first outer shell 21 and a first mid-frame 22. The second fuselage 30 includes a second outer shell 31 and a second mid-frame 32.
[0078] The first outer casing 21 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display screen for display purposes, and this embodiment of the application does not limit this. The second outer casing 31 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display screen for display purposes, and this embodiment of the application does not limit this.
[0079] The first middle frame 22 includes a first outer appearance component (the structure exposed on the outside of the first middle frame 22) 221 and a first middle plate 222 located between the first flat display segment 11 and the first outer shell 21. The first outer appearance component 221 and the first middle plate 222 are fixedly connected. The first outer appearance component 221 and the first middle plate 222 can be integrally formed or separately formed and then fixed together by welding or bonding. The second middle frame 32 includes a second outer appearance component (the structure exposed on the outside of the second middle frame 32) 321 and a second middle plate 322 located between the second flat display segment 13 and the second outer shell 31. The second outer appearance component 321 and the second middle plate 322 are fixedly connected. The second outer appearance component 321 and the second middle plate 322 can be integrally formed or separately formed and then fixed together by welding or bonding.
[0080] The first appearance component 221 and the second appearance component 321 are both annular. The first flat display segment 11, the first appearance component 221, and the first outer shell 21 form a first receiving cavity. The second flat display segment 13, the second appearance component 321, and the second outer shell 31 form a second receiving cavity.
[0081] The first intermediate plate 222 and the second intermediate plate 322 each have a first surface M1 on the side near the flexible display screen 10, and a second surface M2 on the side away from the flexible display screen 14. A cover plate 14b is located on the side of the display panel 14a away from the first surface M1 of the first intermediate plate 222 and the second intermediate plate 322. The flexible display screen 10 can be bonded to the first surface M1 of the first intermediate plate 222 and the second intermediate plate 322 using adhesive (not shown in the figure). The first surface M1 of the first intermediate plate 222 supports the first flat display segment 11, and the first surface M1 of the second intermediate plate 322 supports the second flat display segment 13 of the flexible display screen 10.
[0082] Combination Figure 6 , Figure 6 for Figure 1 The diagram shows the positional relationship of functional components within the electronic device. The foldable phone 100 also includes a first printed circuit board (also called a motherboard) 50, a second printed circuit board (also called a sub-board or small board) 60, and two battery assemblies 70, etc. For distinction, the two battery assemblies 70 may include a first battery assembly 70a and a second battery assembly 70b. The first printed circuit board 50 is equipped with a processor and a charging management module (not shown in the figure). The first printed circuit board 50 and the first battery assembly 70a are located within a first receiving cavity, and both are situated between the second surface M2 of the first intermediate plate 222 and the first outer shell 21. The second printed circuit board 60 and the second battery assembly 70b are located within a second receiving cavity, and are situated between the second surface M2 of the second intermediate plate 322 and the second outer shell 31. Along the Y-axis direction, the first printed circuit board 50, the first battery assembly 70a, the second battery assembly 70b, and the second printed circuit board 60 are arranged sequentially.
[0083] Understandable, Figure 1-6 The accompanying drawings below only schematically illustrate some components of the foldable phone 100; the actual shape, size, position, and construction of these components are not subject to change. Figure 1-6 As well as the accompanying drawings below. In addition, when the electronic device is a device of some other form, the electronic device may not include at least one of the following: first body 20, second body 30, hinge structure 40, flexible display screen 10, first printed circuit board 50, second printed circuit board 60, and a battery assembly 70 (first battery assembly 70a or second battery assembly 70b).
[0084] In some embodiments, the second surface M2 of the first middle plate 222 has a first battery compartment 2221, and the first battery assembly 70a is installed in the first battery compartment 2221; the second surface M2 of the second middle plate 322 has a second battery compartment 3221, and the second battery assembly 70b is installed in the second battery compartment 3221.
[0085] Furthermore, the foldable phone 100 also includes a through-axis flexible circuit board (not shown in the figure). One end of the through-axis flexible circuit board can be electrically connected to the first printed circuit board 50 in the first receiving cavity, and the other end of the through-axis flexible circuit board passes through the hinge structure 40 and is electrically connected to the second printed circuit board 60 in the second receiving cavity, thereby making the first printed circuit board 50 in the first receiving cavity and the second printed circuit board 60 in the second receiving cavity electrically connected. Since the first battery assembly 70a is electrically connected to the first printed circuit board 50 and the second battery assembly 70b is electrically connected to the second printed circuit board 60, both the first battery assembly 70a and the second battery assembly 70b can supply power to the devices located on the first printed circuit board 50 and the devices located on the second printed circuit board 60. Specifically, when the first battery assembly 70a is powered, it supplies power to devices (such as processors) located on the first printed circuit board 50 via the first printed circuit board 50, and supplies power to devices located on the second printed circuit board 60 via the first printed circuit board 50, the through-axis flexible circuit board, and the second printed circuit board 60. When the second battery assembly 70b is powered, it supplies power to devices located on the second printed circuit board 60 via the second printed circuit board 60, and provides power signals to devices (such as processors) located on the first printed circuit board 50 via the second printed circuit board 60, the through-axis flexible circuit board, and the first printed circuit board 50 to ensure the normal operation of each device. Furthermore, the charging management module located on the first printed circuit board 50 receives input from an external charger and charges the first battery assembly 70a, which is electrically connected to the first printed circuit board 50, via the first printed circuit board 50, the through-axis flexible circuit board, and the second printed circuit board 60.
[0086] In this embodiment, the battery assembly 70 can be a lithium-ion battery. The shape of the battery assembly 70 includes, but is not limited to, cuboid, cube, and cylinder. This embodiment only provides an example of the battery assembly 70 being approximately cuboid, which should not be considered as a special limitation of this application.
[0087] See Figure 7 , Figure 7 This is a schematic diagram of a battery assembly from one perspective, provided as an embodiment of this application. The battery assembly 70 includes a battery cell 71, a protective component 72, and a connector 74. (In conjunction with...) Figure 8 , Figure 8 This is a schematic diagram of a battery cell structure provided in an embodiment of this application. The battery cell 71 is the energy storage part of the battery 70, used to store electrical energy through charging and then release the electrical energy to provide the power required for the operation of electronic devices. The battery cell 71 can be, for example, a pouch cell. The battery cell 71 includes a cell body 711, a positive electrode tab 712, and a negative electrode tab 713. The cell body 711 is electrically connected to the protective component 72 through the positive electrode tab 712 and the negative electrode tab 713. One end of the connector 74 is electrically connected to the protective component 72, and the other end of the connector 74 is electrically connected to a printed circuit board (when the battery assembly is a first battery assembly 70a, the printed circuit board here can be a first printed circuit board 50; when the battery assembly is a second battery assembly 70b, the printed circuit board here can be a second printed circuit board 60). Thus, the cell body 711 is electrically connected to the printed circuit board through the positive electrode tab 712 and the negative electrode tab 713, the protective component 72, and the connector 74. Therefore, when the charging management module on the printed circuit board charges the battery cell 711, and when the battery cell 711 supplies power to the devices on the printed circuit board (i.e., discharges), the electrical signals need to pass through the protection component 72. The protection component 72 can protect the battery cell 711 from overcharging, over-discharging, short circuits, etc.
[0088] The specific structure of the battery cell body 711, the protective component 72, and the connector 74, as well as the connection relationship between each structure, are described below.
[0089] First, the specific structure of the 711 battery cell body will be introduced.
[0090] See also Figure 8 The battery cell body 711 may be encapsulated by a molding compound. During the encapsulation process of the battery cell body 711, the molding compound is punched into a single or double pit of the required size and shape. Then, the bare battery cell is placed in the punched pit and encapsulated to form the battery cell body 711. That is, the battery cell body 711 includes a bare chip and a molding compound located outside the bare chip. The molding compound can be an aluminum-plastic film composed of a PP (Polypropylene) layer, an aluminum layer, and a nylon layer. The molding compound can also be an aluminum layer or a steel layer. The cell body 711 can generally be in the form of a hexahedron. In this case, the cell body 711 can include a top wall 711a and a bottom wall 711c opposite each other along the Z-axis, and also includes four side walls 711b connecting the top wall 711a and the bottom wall 711c. The four side walls 711b include a first side wall 711b1, a second side wall 711b2, a third side wall 711b3 and a fourth side wall 711b4. The first side wall 711b1, the second side wall 711b2, the third side wall 711b3 and the fourth side wall 711b4 are connected end to end to form a ring.
[0091] It is understandable that a bare die can roughly have a hexahedral structure, and when the molding compound wraps around the bare die, the resulting cell body 711 can also roughly have a hexahedral structure. The molding compound forms the aforementioned top wall 711a and bottom wall 711c on two opposite large surfaces of the bare die, and forms the aforementioned first sidewall 711b1, second sidewall 711b2, third sidewall 711b3, and fourth sidewall 711b4 on the other four surfaces of the bare die, respectively.
[0092] The cell body 711 may have a top seal 714, which is located at the first sidewall 711b1 of the cell body 711. The top seal 714 may include a first top seal edge 7141, a second top seal edge 7142, and a third top seal edge 7143. Along the Y-axis, the first top seal edge 7141 and the third top seal edge 7143 are arranged opposite to each other, and the second top seal edge 7142 is connected between the first top seal edge 7141 and the third top seal edge 7143. The positive electrode tab 712 and the negative electrode tab 713 are electrically connected to the cell body 711 through the second top seal edge 7142, respectively.
[0093] Can Figure 9 The middle region of the second top sealing edge 7142 shown is bent at 90°. At this time, the middle region of the second top sealing edge 7142 (also called the middle portion 71422) is opposite to the first sidewall 711b1, and the two ends of the second top sealing edge 7142 are raised relative to the middle region (also called raised portions 71421). In this way, the middle portion 71422 of the second top sealing edge 7142 and the raised portions 71421 located at both ends of the middle portion 71422 form a receiving groove BB that is narrow at the bottom and wide at the top. That is, along the direction away from the first sidewall 711b1, the size of the groove BB in the Y-axis direction gradually increases. Then, the positive electrode tab 712 and the negative electrode tab 713 can be bent 180° to form Figure 8 The battery cell 71 shown. A protective element 72 or the like can be set in the receiving groove BB, which avoids the protective element 72 or the like occupying the electronic device in the X-axis direction, and frees up more space for the electronic device. For example, the freed space can make the volume of the battery cell body 711 larger, thereby providing the capacity of the battery 70.
[0094] Next, the specific structure of the protective component 72 and the connection relationship between the protective component 72 and the battery cell body 711 will be introduced.
[0095] See Figure 10 , Figure 11 and Figure 12 , Figure 10 This is a schematic diagram of the structure of a battery assembly from another perspective, provided as an embodiment of this application. Figure 11 for Figure 10 The enlarged view of the CC region of the battery shown. Figure 12 for Figure 11In a cross-sectional view along the DD' direction, the protective component 72 includes a protective plate 721 and a connecting plate 722. Along the X-axis, the protective plate 721 and the connecting plate 722 are stacked, and the planes containing the protective plate 721 and the connecting plate 722 can be parallel to the plane containing the first sidewall 711b1. Along the X-axis, the protective plate 721 includes a first surface 7211 and a second surface 7212, with the first surface 7211 located on the side of the second surface 7212 facing away from the connecting plate 722. The first surface 7211 has multiple protective units. After these units are soldered to the first surface 7211, a system-in-a-package (SIP) module 723 can be formed through a molding process. The second surface 7212 has solder joints, and the protective plate 721 is soldered to the connecting plate 722 via these solder joints, achieving electrical connection between the protective plate 721 and the connecting plate 722. Solder joints are also provided on the surface of the connecting plate 722 facing away from the protective plate 721. The protective component 72 also includes two nickel sheets 724. The connecting plate 722 is welded to the two nickel sheets 724 via solder joints to achieve electrical connection with the two nickel sheets 724. The portion of the nickel sheet 724 not connected to the connecting plate 722 is bent 180°, so that the projection of the nickel sheet 724 on the plane formed by the X-axis and Z-axis is "U"-shaped. That is, along the X-axis direction, the nickel sheet 724 includes a first part 7241 and a second part 7242 opposite to each other, and also includes a third part 7243 connecting one end of the first part 7241 and one end of the second part 7242. The third part 7243 is arc-shaped. The positive electrode tab 712 extends between the first part 7241 and the third part 7243 of one of the nickel sheets 724 and is electrically connected to the nickel sheet 724, so that the positive electrode tab 712 is electrically connected to the connecting plate 722, and further so that the positive electrode tab 712 is electrically connected to the protective plate 721. The negative electrode tab 713 extends between the first portion 7241 and the third portion 7243 of another nickel sheet 724 and is electrically connected to the nickel sheet 724, thereby electrically connecting the negative electrode tab 713 to the connecting plate 722, and further electrically connecting the negative electrode tab 713 to the protection plate 721. Since the positive electrode tab 712 and the negative electrode tab 713 are also electrically connected to the cell body 711, the protection plate 721 and the cell body 711 can be electrically connected.
[0096] The material of the outer surface of the top seal 714 is generally the same as the material of the plastic encapsulation layer of the cell body 711, such as aluminum-plastic film, to prevent other structures made of metal (such as connecting plate 722 and / or tabs) from contacting the top seal 714. In some embodiments, a protective layer 715 is provided on the outer surface of the top seal 714. The protective layer 715 can be made of Mylar. Mylar is a material made by heating dimethyl terephthalate and ethylene glycol under the assistance of a relevant catalyst, undergoing transesterification and vacuum polycondensation, and biaxial stretching. It has dimensional stability, flatness, and excellent tear strength, is heat and cold resistant, moisture and water resistant, chemical corrosion resistant, and has excellent insulation properties as well as excellent electrical, mechanical, heat resistance, and chemical resistance.
[0097] In some embodiments, see continue to see Figure 7 The protective component 72 may further include a protective layer 725. The protective layer 725 is located on the side of the SIP module 723 opposite to the connecting plate 722, and both ends of the protective layer 725 can be bent at 90° and fixed to the plastic encapsulation layer of the cell body 711 by means of adhesive or other methods. In this way, the protective layer 725 can wrap the SIP module 723 and the connecting plate 722, thereby protecting and fixing the SIP module 723 and the connecting plate 722. The protective layer 725 can be a non-conductive insulating material.
[0098] Next, the specific structure of connector 74 and the connection relationship between connector 74, protective component 72 and printed circuit board will be introduced.
[0099] See Figure 13 , Figure 13 A diagram showing the positional relationship between the connector and the protective component provided in the embodiments of this application, and in conjunction with... Figure 6 , Figure 7 and Figure 11One end of the connector 74 is connected to one end of the connecting plate 722. The portion not connected to the connecting plate 722 is bent 180° and fixed to the surface of the protective layer 725 on the side away from the SIP module 723. For example, it can be fixed to the surface of the protective layer 725 by means of adhesive. Then it is bent 90° and extends towards the printed circuit board (when the battery assembly is the first battery assembly 70a, the printed circuit board here can be the first printed circuit board 50; when the battery assembly is the second battery assembly 70b, the printed circuit board here can be the second printed circuit board 60) located adjacent to the battery assembly 70. For example, a connector 75 is provided at the end of the connector 74 not connected to the connecting plate 722. Correspondingly, a connector (not shown in the figure) is also provided on the printed circuit board. The connector on the connector 74 engages with the connector on the printed circuit board to realize the electrical connection between the connector 74 and the printed circuit board. The connector can be a board-to-board (BTB) connector or other connector that can realize electrical connection.
[0100] In this way, the connector 74 and the connecting plate 722 can realize the electrical connection between the multiple protection units on the protection board 721 and the printed circuit board. In turn, the processor located on the printed circuit board can control the protection units on the protection board 721 through the printed circuit board, the connector 74 and the connecting plate 722, and thus realize the protection of the battery assembly 70 against overcharge, over-discharge, short circuit, etc. through the protection units.
[0101] The aforementioned connecting plate 722 and / or connector 74 can be flexible boards, such as flexible printed circuit boards (FPCs). It should be noted that the connecting plate 722 and connector 74 can be integrally formed, such as... Figure 14 As shown, Figure 14 This application provides a diagram illustrating the relationship between a connecting plate and a connector, which simplifies the manufacturing process. Of course, in other alternative embodiments of this application, the connecting plate 722 and the connector 74 are formed separately and then electrically connected together through processes such as welding. The embodiments in this application are all described using the example of the connecting plate 722 and the connector 74 being integrally formed.
[0102] Furthermore, to prevent the connector 74 from experiencing significant rebound force after being bent 180°, which could affect the secure connection between the connector 74 and the protective element 72, see... Figure 15 , Figure 15This is a schematic diagram of another battery assembly structure provided in an embodiment of this application. In some embodiments, the battery 70 further includes a limiting layer 76. Along the X-axis direction, the limiting layer 76 is located on the side of the connector 74 away from the SIP module 723 and is fixedly connected to the protective layer 725. It can be fixed to the protective layer 725 by means of adhesive or other methods. The limiting layer 76 can limit the bending of the connector 74 to prevent it from rebounding after bending. The limiting layer 76 can be made of Mylar. As can be seen from the above structures, for the battery assembly 70 where the protective plate 721 is parallel to the first sidewall 711b1 of the cell body 711, since a part of the connector 74 needs to be bent 180° and fixed to the surface of the protective layer 725 on the side away from the SIP module 723, the size of the protective member 72 in the X-axis direction is increased by the thickness of the connector 74. Figure 6 Since the battery compartment has a fixed dimension in the X-axis direction, meaning the space for accommodating the battery is fixed in the X-axis direction, if the protective component 72 has a larger dimension in the X-axis direction, the cell body 711 will be smaller in the X-axis direction, thus affecting the capacity of the battery assembly 70. Furthermore, when the connecting component 74 needs to be limited by the limiting layer 76, the thickness of the limiting layer 76 will increase in the X-axis direction, further occupying space in the electronic device and further affecting the length of the cell 71, thereby affecting the capacity of the battery assembly 70.
[0103] Based on this, embodiments of this application also provide a battery assembly. See also Figure 16a and 16b , Figure 16a This is a front view of another battery assembly provided in an embodiment of this application. Figure 16b A schematic diagram of the back structure of another battery assembly provided in this application embodiment, which is similar to the example above (i.e. Figures 7-15 Unlike the example of the corresponding battery assembly, the battery assembly 70 also includes a fixing block 77 located on one side of the protective member 72 along the Y-axis direction, and at least a portion of the connector 74 is fixed to the fixing block 77.
[0104] The connector 74 is secured by a fixing block 77 located on one side of the protective member 72 (along the Y-axis direction), thus fully utilizing the space between the raised portion 71421 of the second top seal 7142 and the protective member 72. Compared to bending the connector 74 180° and fixing it to the protective member 72, the space occupied by the connector 74 in the battery compartment can be reduced in the X-axis direction. This allows for an increase in the size of the cell body 711 in the X-axis direction, thereby increasing the battery capacity.
[0105] It is understandable that if the electronic device does not have a battery compartment, the connector 74 can be fixed by the fixing block 77 located on one side of the protective component 72 (along the Y-axis direction). In the X-axis direction, the space occupied by the connector 74 in the electronic device can be reduced, freeing up more space for the electronic device. This allows the size of the cell body 711 in the X-axis direction to be increased, thereby increasing the battery capacity.
[0106] The structure of connector 74 and the fixing relationship between connector 74 and fixing block 77 can be determined based on the position of battery assembly and printed circuit board. See also: In some embodiments, see Figure 17 , Figure 17 A positional relationship diagram of the battery assembly and printed circuit board provided in the embodiments of this application, and in conjunction with... Figure 6 Along the Y-axis, the printed circuit board is located on one side of the second sidewall 711b2. In this case, see... Figure 18 , Figure 19a and Figure 19b , Figure 18 This is a schematic diagram of the structure of a fixing block provided in an embodiment of this application. Figure 19a A positional relationship diagram of a fixing block and a connector from one viewpoint is provided for an embodiment of this application. Figure 19b This diagram illustrates the positional relationship between a fixing block and a connector from another perspective, provided in an embodiment of this application. Along the Z-axis, the fixing block 77 includes a first surface 779 and a second surface 778 facing each other, and a side surface 770 connecting the first surface 779 and the second surface 778. The connector 74 includes a first connecting portion 741, a second connecting portion 742, a third connecting portion 743, and a fourth connecting portion 744 connected sequentially. Specifically, the first connecting portion 741 is disposed on the side surface 770 of the fixing block 77 away from the first sidewall 711b1. The second connecting portion 742 is disposed around the side surface 770 of the fixing block 77 near the first sidewall 711b1, with one end of the second connecting portion 742 electrically connected to the connecting plate 722 and the other end electrically connected to the first connecting portion 741. The third connecting portion 743 is disposed on the first surface 779, with one end of the third connecting portion 743 electrically connected to the first connecting portion 741. The other end of the third connecting portion 743 is electrically connected to one end of the fourth connecting portion 744. The other end of the fourth connecting portion 744 extends toward a printed circuit board disposed adjacent to the battery assembly 70 (when the battery assembly is the first battery assembly 70a, the printed circuit board here can be the first printed circuit board 50; when the battery assembly is the second battery 70b, the printed circuit board here can be the second printed circuit board 60), so that the projection of the other end of the fourth connecting portion 744 onto the plane of the printed circuit board overlaps with the printed circuit board. In this way, a connector 75 can be provided between the connector and the printed circuit board, and the connector 75 electrically connects the connector 74 and the printed circuit board.
[0107] To facilitate electrical connection between the connector 74 and the printed circuit board, the fourth connecting portion 744 can be L-shaped. This is because, along the X-axis, one end of the printed circuit board can be flush with the end of the protective member 72 away from the first sidewall 711b1, or the end of the protective member 72 away from the first sidewall 711b1 can extend beyond one end of the printed circuit board. If the bent connector 74 extends along the Y-axis, there may be situations where the projection of the connector 74 onto the plane of the printed circuit board does not overlap with the printed circuit board, or the overlapping area is small, thus affecting the electrical connection between the connector 74 and the printed circuit board. By setting the shape of the fourth connecting portion 744 to L-shape, the overlapping area between the projection of the connector 74 onto the plane of the printed circuit board and the printed circuit board can be ensured, thereby enabling a better electrical connection between the connector 74 and the printed circuit board.
[0108] In some other embodiments, see Figure 20 , Figure 20 This is another positional relationship diagram of the battery assembly and printed circuit board provided in an embodiment of this application. Along the X-axis, the printed circuit board is located on the side of the protective member 72 away from the first sidewall 711b1. In this case, combined with Figure 21 , Figure 21 This is another positional relationship diagram of the fixing block and connector provided in an embodiment of this application from a certain perspective. Unlike the embodiments described above, the connector 74 does not include a fourth connecting portion 744, and the end of the third connecting portion 743 that is not electrically connected to the first connecting portion 741 extends away from the first sidewall 711b1 and extends to a printed circuit board disposed adjacent to the battery assembly 70 (when the battery assembly is the first battery assembly 70a, this printed circuit board can be the first printed circuit board 50; when the battery assembly is the second battery 70b, this printed circuit board can be the second printed circuit board 60), such that the projection of the connector 74 onto the plane of the printed circuit board overlaps with the printed circuit board. In this way, a connector can be provided between the connector and the printed circuit board, and the connector electrically connects the connector 74 and the printed circuit board.
[0109] In some embodiments, see continue to see Figure 16a and Figure 16b Along the X-axis, the distance from the surface of the first connecting portion 741 away from the first sidewall 711b1 to the first sidewall 711b1 is a first distance H1. The distance from the surface of the protective member 72 away from the first sidewall 711b1 (when the protective member 72 does not include the protective layer 725, this end is the surface of the SIP module 723 facing away from the connecting plate 722; when the protective member 72 includes the protective layer 725, this end is the surface of the protective layer 725 facing away from the connecting plate 722) to the first sidewall 711b1 is a second distance H2. Wherein, H1 < H0 + H2, and H0 is the thickness of the first connecting portion 741.
[0110] H1 < H0 + H2 can include H1 ≤ H2; or, H1 - H2 > 0 and H1 - H2 < H0. In other words, along the X-axis, the surface of the first connecting portion 741 away from the first sidewall 711b1 is flush with the surface of the protective member 72 away from the first sidewall 711b1, i.e., H2 equals H1; or, the distance from the surface of the first connecting portion 741 away from the first sidewall 711b1 to the first sidewall 711b1 is less than the distance from the surface of the protective member 72 away from the first sidewall 711b1 to the first sidewall 711b1, i.e., H1 is less than H2; or, the distance from the surface of the first connecting portion 741 away from the first sidewall 711b1 to the first sidewall 711b1 is greater than the distance from the surface of the protective member 72 away from the first sidewall 711b1 to the first sidewall 711b1, but the thickness of the portion of the first connecting portion 741 extending beyond the protective member 72 is less than the thickness of the first connecting portion 741, i.e., H1-H2>0 and H1-H2<H0.
[0111] With this configuration, the size of the battery assembly 70 in the X-axis direction can be reduced by approximately the thickness of the first connecting portion 741, thereby allowing the cell body 711 to increase in thickness by approximately the thickness of the first connecting portion 741. Furthermore, since the connector 74 does not need to be bent 180° and because the connector 74 is positioned around the fixing block 77, the fixing area between the connector 74 and the fixing block 77 is larger. Therefore, there is no need to provide a limiting layer 76 for the connector 74. Consequently, the size of the battery assembly 70 in the X-axis direction in this example can be further reduced by the thickness of a limiting layer 76, thereby allowing for a further increase in the size of the cell body 711 in the X-axis direction and improving battery capacity. Verification has shown that using this solution, the length of the cell body 711 in the X-axis direction can be increased by approximately 0.2–0.4 mm.
[0112] For an example of how the connector 74 is fixed to the fixing block 77, see [example description]. Figure 22 An adhesive layer 73 can be provided on at least a portion of the side surface 770 of the fixing block 77, and the connector 74 can be fixed to the fixing block 77 by the adhesive layer 73. The adhesive layer 73 may include a structure with adhesive properties such as adhesive backing or double-sided adhesive.
[0113] In some embodiments, see Figure 23 and Figure 24 , Figure 23 This is a schematic diagram of the back structure of another battery assembly provided in an embodiment of this application. Figure 24 for Figure 23An enlarged view of the EE region of the battery assembly. A buffer layer 78 is provided in the gap between the second connecting part 742 and the second top seal 7142. The buffer layer 78 protects the connector 74 from damage to the wiring on the connector 74 due to impact between the connector 74 and the second top seal 7142 when the electronic device is dropped. The buffer layer 78 may include a cushioning structure such as adhesive or silicone.
[0114] The shape of the fixing block 77 is not limited in this embodiment, and those skilled in the art can set it according to the actual situation.
[0115] In some embodiments, see Figure 25 , Figure 25 This is a top view of a fixing block and a connector provided in an embodiment of this application, and in conjunction with... Figure 18 and Figure 24 The side surface 770 of the fixing block 77 includes a first side surface 771, wherein the side surface of the fixing block 77 facing the protective member 72 along the Y-axis is the first side surface 771. This first side surface 771 may include a first sub-surface 7711 and a second sub-surface 7712, which have an included angle, for example, greater than 90° and less than 180°. Thus, when the connector 74 is fixed to the fixing block 77, the connection between the connecting plate 722 and the connector 74 can transition smoothly without any sharp bends.
[0116] In some embodiments, see continue to see Figure 18 , Figure 24 and Figure 25 The side surface 770 of the fixing block 77 also includes a second side surface 772, wherein the side surface 770 of the fixing block 77 facing the raised portion 71421 along the Y-axis is the second side surface 772. This second side surface 772 can be an inclined plane (i.e., having an angle with the plane formed by the X-axis and Z-axis), and the shape of the projection of the second side surface 772 onto the plane formed by the X-axis and Y-axis is similar to the shape of the projection of the raised portion 71421 onto the plane formed by the X-axis and Y-axis. This arrangement allows for full utilization of the space between the raised portion 71421 and the protective member 72 along the Y-axis, ensuring a larger volume of the fixing block 77, thereby ensuring a larger bonding area between the connector 74 and the fixing block 77, and ensuring a more secure fixation of the connector 74.
[0117] In some embodiments, see continue to see Figure 17 , Figure 21 and Figure 22The side surface 770 of the fixing block 77 also includes a third side surface 773 and a fourth side surface 774. The third side surface 773 connects one end of the first side surface 771 and one end of the second side surface 772, and the fourth side surface 774 connects the other end of the first side surface 771 and the other end of the second side surface 772. Both the third side surface 773 and the fourth side surface 774 are parallel to the first sidewall 711b1, with the fourth side surface 774 located on the side of the third side surface 773 facing away from the first sidewall 711b1. This arrangement, along the X-axis, fully utilizes the space between the raised portion 71421 and the protective member 72, ensuring a larger volume for the fixing block 77, thereby ensuring a larger bonding area between the connecting member 74 and the fixing block 77, and ensuring a more secure fixation of the first connecting member 741.
[0118] In some embodiments, the first connection 775 between the first side surface 771 and the third side surface 773 is arc-shaped; and / or, the second connection 776 between the third side surface 773 and the second side surface 772 is arc-shaped; and / or, the third connection 777 between the second side surface 772 and the fourth side surface 774 is arc-shaped. This ensures a smooth transition at each corner of the connector 74 when it is fixed to the fixing block 77, preventing sharp bends.
[0119] Based on this, the bending radius R1 of the first connection 775 is greater than or equal to three times the thickness of the connector 74. And, the bending radius R2 of the second connection 776 is greater than or equal to three times the thickness of the connector 74. And, the bending radius R3 of the third connection 777 is greater than or equal to three times the thickness of the connector 74. And, the bending radius R4 of the connection between the connecting plate 722 and the connector 74 (also referred to as the fourth connection) 7411 is greater than or equal to three times the thickness of the connector 74.
[0120] For example, the bending radius of the arc is equal to three, four, five, six, seven, eight, or nine times the thickness of the connector.
[0121] With this configuration, when the connector 74 is fixed to the fixing block 77, it can further ensure a smooth transition at each corner of the connector 74.
[0122] In some embodiments, a portion of the connector 74 may be disposed around the second sub-surface 7712, the third side surface 773, the second side surface 772, and the fourth side surface 774. This arrangement ensures the bonding area between the connector 74 and the fixing block 77, thereby ensuring that the connector 74 is more securely fixed.
[0123] It should be noted that the above arc shape is the shape of the projection of each connection point onto the plane formed by the X-axis and Y-axis.
[0124] Any content in the various embodiments of this application, as well as any content in the same embodiment, can be freely combined. Any combination of the above content is within the scope of this application. Of course, any of the above embodiments can also exist independently, and independent embodiments are also within the scope of this application.
[0125] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A battery assembly, characterized in that, include: A battery cell body, the battery cell body including a first sidewall; A protective component is disposed on the first sidewall and is electrically connected to the battery cell body; A fixing block and a connector are provided, extending along the first sidewall. The fixing block is located on one side of the protective member, and at least a portion of the connector is fixed to the fixing block and electrically connected to the protective member.
2. The battery assembly according to claim 1, characterized in that, The connector includes a first connecting portion, which is disposed on the surface of the fixing block away from the first sidewall. The distance from the surface of the first connecting portion away from the first sidewall to the first sidewall is the first distance, and the distance from the surface of the protective member away from the first sidewall to the first sidewall is the second distance, wherein H1 < H2 + H0, H0 is the thickness of the first connecting portion in the direction perpendicular to the first sidewall, H1 is the first distance, and H2 is the second distance.
3. The battery assembly according to claim 2, characterized in that, The connector further includes a second connecting portion and a third connecting portion; The second connecting part is disposed around the surface of the fixing block near the first sidewall, and one end of the second connecting part is electrically connected to the protective member, and the other end of the second connecting part is electrically connected to the first connecting part; Along the thickness direction of the battery cell body, the fixing block includes a first surface; the third connecting part is disposed on the first surface, and the third connecting part is electrically connected to the first connecting part.
4. The battery assembly according to any one of claims 1-3, characterized in that, The protective component includes a protective plate and a connecting plate. The connecting plate is located between the protective plate and the first sidewall, and is electrically connected to both the battery cell body and the protective plate.
5. The battery assembly according to claim 4, characterized in that, The connecting plate and the connecting component are integrally formed.
6. The battery assembly according to claim 5, characterized in that, The connecting plate and the connecting component are flexible circuit boards.
7. The battery assembly according to claim 3, characterized in that, A buffer layer is provided between the second connecting part and the first sidewall.
8. The battery assembly according to any one of claims 1-7, characterized in that, The side surface of the fixing block facing the protective member is the first side surface. The first side surface includes a first sub-surface and a second sub-surface. The included angle between the first sub-surface and the second sub-surface is greater than 90° and less than 180°.
9. The battery assembly according to any one of claims 1-8, characterized in that, The battery cell body includes a top seal located at the first side wall; the top seal includes a middle portion and raised portions located at both ends of the middle portion, the middle portion being located between the first side wall and the protective member, and the fixing block being located between the raised portions and the protective member; The side surface of the fixing block facing the raised portion is the second side surface, and the shape of the second side surface is similar to the shape of the raised portion.
10. The battery assembly according to any one of claims 1-9, characterized in that, The fixing block includes a third side surface and a fourth side surface, both of which are parallel to the first sidewall, and the fourth side surface is located on the side of the third side surface away from the first sidewall.
11. The battery assembly according to any one of claims 1-10, characterized in that, The fixing block includes a first side surface, a third side surface, a second side surface, and a fourth side surface that are connected end to end; The first connection between the first side surface and the third side surface is arc-shaped; And / or, the second connection between the third side surface and the second side surface is arc-shaped; And / or, the third connection between the second side surface and the fourth side surface is arc-shaped; And / or, the fourth connection between the connector and the protective member is arc-shaped.
12. The battery assembly according to claim 11, characterized in that, The bending radius of the arc is greater than or equal to three times the thickness of the connector.
13. The battery assembly according to any one of claims 1-12, characterized in that, An adhesive layer is provided between the fixing block and the connector.
14. An electronic device, characterized in that, The device includes a first housing, a printed circuit board, and a battery assembly as described in any one of claims 1-13; the printed circuit board and the battery cell body are located inside the first housing, and the printed circuit board is located on one side of the battery cell body; the battery cell body is electrically connected to the printed circuit board through the protective member and the connector.
15. The electronic device according to claim 14, characterized in that, The electronic device further includes a second body and a pivot structure, wherein the first body and the second body are rotatably connected via the pivot structure; Along a direction away from the pivot structure, the battery assembly and the printed circuit board are arranged sequentially within the first housing.