Protective plate assembly, battery assembly and terminal equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a protection plate assembly, a battery assembly and terminal equipment, the protection plate assembly comprises a flexible circuit board, the flexible circuit board comprises a main body and a device part, the side surface of the main body in the first direction forms a mounting surface, the device part is arranged on the mounting surface, and the main body is provided with a first connecting part and a second connecting part; the supporting plate is arranged on the mounting surface and is provided with an accommodating structure; according to the utility model, the accommodating structure is arranged on the supporting plate, the accommodating structure is arranged corresponding to the device part, the supporting plate and the device part are both located on the mounting surface, and after the supporting plate is assembled, the device part is located in the accommodating space of the accommodating structure and does not interfere with the supporting plate, so that the reliability of the flexible circuit board is improved. According to the protection plate assembly, the device part on the main body is prevented from protruding outwards in the mode that the device part is avoided through the containing structure, meanwhile, the strength of the flexible circuit board can be improved through the supporting plate, and the thickness can be reduced while the structure of the protection plate assembly is more reliable.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to protection board assemblies, battery assemblies, and terminal equipment. Background Technology

[0002] Protection board assemblies are a crucial component of battery structures in electronic products, especially lithium-ion batteries used in mobile electronics such as smartphones, laptops, and electric vehicles. The primary function of protection board assemblies is to prevent the battery from operating outside its safe operating range, including protection against overcharging, over-discharging, and extreme temperatures.

[0003] Currently, with the rise of foldable and ultra-thin phones, the increasingly thinner phones place higher demands on batteries, requiring them to be thin, lightweight, and small in size. The protection board components in existing battery structures are usually formed by stacking multiple layers of sheet-like structures. Some of these sheet-like structures have electronic components on their surfaces, and the height of these protruding electronic components is relatively high, resulting in a large overall thickness after stacking multiple sheet-like structures, making it difficult to meet the requirements for thin and light protection board components. Utility Model Content

[0004] In view of this, the present invention provides a protection board assembly, a battery assembly, and a terminal device to solve the problem that the thickness of existing protection board assemblies is too thick to meet assembly requirements.

[0005] In a first aspect, this utility model provides a protective board assembly, comprising: a flexible circuit board including a main body and a device part, wherein the main body forms a mounting surface on its side along a first direction, the device part is disposed on the mounting surface, the main body has a first connecting part and a second connecting part, the first connecting part being used to connect with a battery cell, and the second connecting part being used to connect with an external component; a support plate disposed on the mounting surface and having a receiving structure, wherein the receiving structure has a receiving space for communicating with the outside, and the receiving space is used to receive the device part; and an encapsulation structure, wherein the support plate is encapsulated and connected to the flexible circuit board through the encapsulation structure.

[0006] Beneficial effects: A receiving structure is set on the support plate, and the receiving structure is set correspondingly to the device part. Both the support plate and the device part are located on the mounting surface. After the support plate is assembled, the device part is located in the receiving space of the receiving structure and will not interfere with the support plate. By avoiding the device part from protruding outward by the receiving structure, the device part on the main body is prevented from being protruded outward. At the same time, the support plate can also improve the strength of the flexible circuit board, making the protection board assembly structure more reliable and reducing the thickness. This effectively solves the problem that the thickness of the existing protection board assembly is too thick to meet the assembly requirements.

[0007] In one alternative embodiment, the receiving structure is a first through hole provided on the support plate, and the space inside the first through hole is used to receive the device part.

[0008] Beneficial effects: The housing structure is simple and reliable. The hole structure is easy to process and also makes it easy to observe whether the first through hole and the device part match during the assembly process, which can improve the assembly accuracy.

[0009] In one alternative embodiment, the device section includes a plurality of electronic devices connected to the mounting surface, and the support plate has a plurality of first through holes, each first through hole accommodating at least one electronic device.

[0010] Beneficial effects: The first through hole allows for flexible assembly of electronic components, which can be adjusted according to requirements, thus improving the ease of assembly of the protection board assembly.

[0011] In one alternative embodiment, the support plate is further provided with a second through hole, which is spaced apart from the first through hole.

[0012] Beneficial effects: The second through hole can reduce the weight of the support plate, and the second through hole and the first through hole can make the support plate form a frame, improving the bending resistance of the support plate.

[0013] In one optional embodiment, a second through hole is provided between each of two adjacent first through holes.

[0014] Beneficial effects: This arrangement of the first through hole makes the weight and strength distribution of the support plate more even, avoiding large local strength differences.

[0015] In one alternative embodiment, the first connecting portion includes a first electrode and a second electrode, the main body extends outward along the surface of the second direction and forms the first electrode and the second electrode respectively, wherein the second direction intersects the first direction.

[0016] Beneficial effects: The first connection part of this type can be directly connected to the battery cell without the need for additional connecting structures such as nickel plates, which can reduce the number of parts and make the connection method simpler and more reliable.

[0017] In one alternative embodiment, the main body includes an installation section and a connecting section along a third direction. A first connecting part, a support plate, and an encapsulation structure are all connected to the installation section. A second connecting part is connected to the end of the connecting section away from the installation section. The second connecting part is provided with a board-to-board connector for connecting with external components. The third direction intersects with both the first and second directions.

[0018] Beneficial effects: This type of second connection is simple and reliable, which can improve the connection flexibility of the second connection, and at the same time, the board-to-board connector can be easily and quickly connected to other components of the terminal equipment.

[0019] In one alternative embodiment, the support plate is at least one of a printed circuit board and a flexible die-cut circuit board; and / or, the mounting surface is fixedly connected to the support plate via solder pads.

[0020] Beneficial effects: The support plate has a simple and reliable structure, is easy to process and manufacture, and can be bidirectionally bonded to the mounting surface through the solder pads, which improves the reliability of the connection between the two and also enhances the structural strength of the flexible circuit board.

[0021] Secondly, the present invention also provides a battery assembly, which includes: a cell unit; the aforementioned protection board assembly, wherein the cell unit is electrically connected to the first connecting portion of the protection board assembly.

[0022] Thirdly, this utility model also provides a terminal device, which includes: a body having a mounting position; the aforementioned protection plate assembly, or the aforementioned battery assembly, disposed in the mounting position. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of a protective plate assembly after assembly according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 An exploded view of the protective plate assembly shown.

[0026] Figure 3 for Figure 1 A 3D schematic diagram of the protective board assembly shown without its encapsulation structure;

[0027] Figure 4 for Figure 3 A three-dimensional schematic diagram of the protective plate assembly from another perspective.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Flexible circuit board; 101. Main body; 1011. Mounting surface; 1012. First connecting part; 1013. Second connecting part; 1014. First tab; 1015. Second tab; 1016. Mounting section; 1017. Connecting section; 1018. Solder pad; 1019. Board-to-board connector; 102. Component section; 1021. Electronic component;

[0030] 2. Support plate; 201. Receiving structure; 202. First through hole; 203. Second through hole;

[0031] 3. Packaging structure;

[0032] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0035] According to an embodiment of the present invention, a protective board assembly is provided, comprising: a flexible circuit board 1, a support plate 2, and an encapsulation structure 3. The flexible circuit board 1 includes a main body 101 and a device part 102. The main body 101 forms a mounting surface 1011 on its side along a first direction X. The device part 102 is disposed on the mounting surface 1011. The main body 101 has a first connecting part 1012 and a second connecting part 1013. The first connecting part 1012 is used to connect with a battery cell, and the second connecting part 1013 is used to connect with an external component. The support plate 2 is disposed on the mounting surface 1011 and has a receiving structure 201. The receiving structure 201 has a receiving space inside for communicating with the outside, and the receiving space is used to receive the device part 102. The support plate 2 is encapsulated and connected to the flexible circuit board 1 through the encapsulation structure 3.

[0036] In the protective board assembly of this embodiment, a receiving structure 201 is provided on the support plate 2. The receiving structure 201 is correspondingly provided with the device part 102. Both the support plate 2 and the device part 102 are located on the mounting surface 1011. After the support plate 2 is assembled, the device part 102 is located in the receiving space of the receiving structure 201 and will not interfere with the support plate 2. By the receiving structure 201 avoiding the device part 102, the device part 102 on the main body 101 is prevented from protruding outward. At the same time, the support plate 2 can also improve the strength of the flexible circuit board 1, making the protective board assembly structure more reliable and reducing the thickness. This effectively solves the problem that the thickness of the existing protective board assembly is too thick to meet the assembly requirements.

[0037] It should be noted that the thickness is the dimension of the protective plate assembly in the first direction X.

[0038] In addition, the area of ​​the mounting surface 1011 of the main body 101 covered by the support plate 2 is not limited, and can be selected according to the specific structure of the protective plate assembly; the specific structure of the receiving structure 201 is not limited, and can be a receiving groove, receiving hole or other structure, as long as it can accommodate the device part 102.

[0039] In one possible implementation, the receiving structure 201 is a first through hole 202 provided on the support plate 2. The space inside the first through hole 202 is used to receive the device part 102. The receiving structure 201 is simple and reliable. The hole structure is easy to process and also makes it easy to observe whether the first through hole 202 and the device part 102 match during the assembly process, which can improve the assembly accuracy.

[0040] Specifically, the size of the first through hole 202 is not limited. Figure 1 The plane containing the second direction Y and the third direction Z indicated by the middle arrow is the cross-section, and the cross-sectional area of ​​the first through hole 202 along the cross-section is greater than or equal to the cross-sectional area of ​​the device part 102 along the cross-section.

[0041] Preferably, the cross-sectional area of ​​the first through hole 202 along the cross section is larger than the cross-sectional area of ​​the device part 102. When the support plate 2 of this type is assembled, there is a margin between the wall of the first through hole 202 and the device part 102, and the support plate 2 is not easy to collide with the device part 102, thereby reducing the risk of damaging the device part 102 during the assembly process.

[0042] In one possible implementation, the device section 102 includes a plurality of electronic devices 1021 connected to the mounting surface 1011, and the support plate 2 has a plurality of first through holes 202, each first through hole 202 accommodating at least one electronic device 1021. The assembly method of the first through holes 202 and the electronic devices 1021 is flexible and can be adjusted according to requirements, which can improve the assembly convenience of the protection board assembly.

[0043] Specifically, multiple electronic devices 1021 are spaced apart on the mounting surface 1011. This can be multiple electronic devices 1021 located in a first through hole 202, or a single electronic device 1021 located in a first through hole 202, or both of these conditions can coexist. The arrangement of the electronic devices 1021 can be flexibly selected according to the arrangement of the electronic devices 1021.

[0044] In one possible implementation, the support plate 2 is further provided with a second through hole 203, which is spaced apart from the first through hole 202. The second through hole 203 can reduce the weight of the support plate 2, and the second through hole 203 and the first through hole 202 can make the support plate 2 form a frame as a whole, thereby improving the bending resistance of the support plate 2.

[0045] Specifically, there is no limitation on the number and nature of the second through holes 203. They can be rectangular holes, round holes, or irregularly shaped holes. The second through holes 203 can be located between adjacent first through holes 202 or can be set around the first through holes 202. The choice can be made according to the requirements.

[0046] In one possible implementation, a second through hole 203 is provided between each of two adjacent first through holes 202. This arrangement of the first through holes 202 can make the weight distribution and strength distribution of the support plate 2 more even, avoiding the occurrence of large local strength differences.

[0047] It is understood that, as an alternative implementation, when the adjacent first through holes 202 are close to each other, the second through hole 203 may not be provided.

[0048] Specifically, the number of second through holes 203 provided between adjacent first through holes 202 is not limited; there can be one or more, and the choice can be flexible.

[0049] In one possible implementation, the first connecting portion 1012 includes a first tab 1014 and a second tab 1015. The main body 101 extends outward along the surface of the second direction Y and forms the first tab 1014 and the second tab 1015 respectively. The second direction Y intersects the first direction X. This type of first connecting portion 1012 can be directly connected to the battery cell without the need for additional connecting structures such as nickel sheets, which can reduce the number of components and make the connection simpler and more reliable.

[0050] The specific connection positions of the first tab 1014 and the second tab 1015 are not limited. They can be connected to the tabs of the battery cell respectively, or one of them can be connected to the tab of the battery cell and the other can be connected to the conductive battery cell casing.

[0051] In one possible implementation, the main body 101 includes a mounting section 1016 and a connecting section 1017 along the third direction Z. The first connecting part 1012, the support plate 2, and the encapsulation structure 3 are all connected to the mounting section 1016. The second connecting part 1013 is connected to the end of the connecting section 1017 away from the mounting section 1016. The second connecting part 1013 is provided with a board-to-board connector 1019, which is used to connect with external components. The third direction Z intersects with both the first direction X and the second direction Y. This form of the second connecting part 1013 is simple and reliable, which can improve the connection flexibility of the second connecting part 1013. At the same time, the board-to-board connector 1019 can be conveniently and quickly connected with other components of the terminal device.

[0052] It is understood that, as an alternative implementation, the second connecting part 1013 may also be located on the other sides of the connecting segment 1017, and the specific position of the second connecting part 1013 can be flexibly adjusted according to the required connection distance and connection position.

[0053] In one possible implementation, the support plate 2 is at least one of a printed circuit board and a flexible die-cut circuit board, which has a simple and reliable structure and is easy to process and manufacture.

[0054] Specifically, in order to improve the support performance of flexible die-cut circuit boards, reinforcing structures, such as copper foil or other metal reinforcement layers, need to be installed on them.

[0055] Alternatively, as an alternative implementation, the support plate 2 can also be made of fiberglass cloth with a reinforcing structure.

[0056] Mounting surface 1011 is fixedly connected to support plate 2 via solder pad 1018. This connection method allows support plate 2 and mounting surface 1011 to be bonded in both directions, improving the reliability of the connection and enhancing the structural strength of flexible circuit board 1.

[0057] In one possible implementation, the encapsulation structure 3 is an encapsulation structure formed by low-pressure injection molding. The encapsulation structure 3 covers the surface of the support plate 2 and enters the first through hole 202 and the second through hole 203. The encapsulation structure 3 also covers part of the surface of the flexible circuit board 1, which can improve the overall structural strength of the flexible circuit board 1 and prevent the structure such as the solder pad 1018 from breaking and failing when bending, thereby causing the flexible circuit board 1 and the support plate 2 to separate.

[0058] According to an embodiment of the present invention, in another aspect, a battery assembly is provided, which includes: a cell unit and the above-mentioned protection board assembly, wherein the cell unit is electrically connected to the first connection portion 1012 of the protection board assembly.

[0059] According to an embodiment of the present invention, in another aspect, a terminal device is provided, comprising: a body and the aforementioned protection board assembly or the aforementioned battery assembly, wherein the body has a mounting position; the protection board assembly or the battery assembly is disposed in the mounting position.

[0060] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A protective panel assembly, characterized by, The application relates to a flexible circuit board (1) comprising a main body (101) and a device part (102), the main body (101) is provided with a mounting surface (1011) on the side along a first direction (X), the device part (102) is arranged on the mounting surface (1011), the main body (101) is provided with a first connecting part (1012) and a second connecting part (1013), the first connecting part (1012) is used for connecting with an electric core, and the second connecting part (1013) is used for connecting with an external component; a support plate (2) is arranged on the mounting surface (1011) and is provided with a containing structure (201), the containing structure (201) is internally provided with a containing space used for communicating with the outside, and the containing space is used for containing the device part (102); and a packaging structure (3) is used for packaging and connecting the support plate (2) and the flexible circuit board (1). The containing structure (201) is a first through hole (202) arranged on the support plate (2), and the space in the first through hole (202) is used for containing the device part (102). The device part (102) comprises a plurality of electronic devices (1021) connected with the mounting surface (1011), and the support plate (2) is provided with a plurality of first through holes (202), at least one electronic device (1021) is contained in each first through hole (202). The support plate (2) is further provided with a second through hole (203), and the second through hole (203) is arranged at intervals with the first through hole (202).

2. The protective panel assembly of claim 1, wherein, The second through hole (203) is arranged between two adjacent first through holes (202).

3. The protective panel assembly of claim 2, wherein, The first connecting part (1012) comprises a first lug (1014) and a second lug (1015), and the surface of the main body (101) extends outward along a second direction (Y) and forms the first lug (1014) and the second lug (1015) respectively, wherein the second direction (Y) intersects with the first direction (X).

4. The protective panel assembly of claim 2, wherein, The main body (101) comprises a mounting section (1016) and a connecting section (1017) along a third direction (Z), the first connecting part (1012), the support plate (2) and the packaging structure (3) are connected to the mounting section (1016), the second connecting part (1013) is connected to one end of the connecting section (1017) away from the mounting section (1016), and a board-to-board connector (1019) is arranged on the second connecting part (1013) and used for connecting with an external component, wherein the third direction (Z) intersects with the first direction (X) and the second direction (Y) at the same time.

5. The protective panel assembly of claim 4, wherein, The support plate (2) is at least one of a printed circuit board and a flexible die-cut circuit board.

6. The protective panel assembly of any one of claims 1 to 5, wherein, The mounting surface (1011) is fixedly connected with the support plate (2) through a solder pad (1018).

7. The protective panel assembly of claim 6, wherein, The application relates to an electric core unit.

8. The protective panel assembly of any one of claims 1 to 5, wherein, ​ ​ 9. A battery assembly characterized by, ​ ​ The protection plate assembly according to any one of claims 1 to 8, wherein the electric core unit is electrically connected with the first connecting portion (1012) of the protection plate assembly.

10. A terminal device, comprising: Comprise: A machine body, having a mounting position; The protection plate assembly according to any one of claims 1 to 8, or the battery assembly according to claim 9, is arranged in the mounting position.

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