Battery components and electronic devices

Abstract

This application provides a battery assembly and an electronic device to solve the problem of how to reduce electromagnetic interference to a circuit board. The battery assembly provided by this application includes: an electromagnetic shielding bracket, a circuit board, an electromagnetic shielding cover, a battery cell, a first cover, and a second cover. The electromagnetic shielding bracket has a circuit board receiving groove and a battery cell receiving hole. The circuit board is disposed in the circuit board receiving groove, and the electromagnetic shielding cover seals the opening of the circuit board receiving groove. The battery cell is disposed in the battery cell receiving hole and is electrically connected to the circuit board. The first cover and the second cover respectively seal both sides of the battery cell receiving hole.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery assembly and electronic device. Background Technology

[0002] Battery modules typically consist of battery cells and a circuit board, also known as a protection board or battery protection board. The circuit board is primarily used for overcharge protection, over-discharge protection, and overcurrent and short-circuit protection. Electronic devices equipped with battery modules generate electromagnetic waves during operation, which may interfere with the normal operation of the circuit board. Utility Model Content

[0003] This application provides a battery assembly and an electronic device to address the problem of how to reduce electromagnetic interference to circuit boards.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a battery assembly.

[0006] The battery assembly provided in this application includes: an electromagnetic shielding bracket, a circuit board, an electromagnetic shielding cover, a battery cell, a first cover, and a second cover; the electromagnetic shielding bracket is provided with a circuit board receiving groove and a battery cell receiving hole; the circuit board is disposed in the circuit board receiving groove, and the electromagnetic shielding cover covers the opening of the circuit board receiving groove; the battery cell is disposed in the battery cell receiving hole, and the battery cell is electrically connected to the circuit board; the first cover and the second cover respectively cover both sides of the battery cell receiving hole.

[0007] In some embodiments, the electromagnetic shielding bracket includes a first main body and a first protrusion connected to each other, and a circuit board receiving groove is disposed in the first main body and the first protrusion; the electromagnetic shielding cover includes a second main body and a second protrusion connected to each other, the second main body is opposite to the area of ​​the circuit board receiving groove located in the first protrusion, and the second protrusion is opposite to the area of ​​the circuit board receiving groove located in the first main body; the circuit board includes a third main body and a third protrusion connected to each other; the third main body is located between the first protrusion and the second main body, and the third protrusion is located between the first main body and the second protrusion.

[0008] In some embodiments, a cell receiving hole is provided in the first body portion.

[0009] In some embodiments, the number of cell receiving holes is at least two, and the at least two cell receiving holes are spaced apart along the length direction of the battery assembly; the number of cells is equal to the number of cell receiving holes, and the cells are disposed in the cell receiving holes one-to-one; the third protrusion is located between two adjacent cells, and the third protrusion is used to electrically connect with the cell adjacent to the third protrusion.

[0010] In some embodiments, the first cover is a first electromagnetic shielding cover, which covers the side of the electromagnetic shielding bracket where the electromagnetic shielding cover is provided, the second protrusion is located between the first cover and the electromagnetic shielding bracket, and the second main body is exposed on the outer surface of the battery assembly.

[0011] In some embodiments, the second cover is a second electromagnetic shielding cover, which covers the side of the electromagnetic shielding bracket away from the first cover, the first main body is located between the second cover and the first cover, and the first protrusion is exposed on the outer surface of the battery assembly.

[0012] In some embodiments, the first cover includes a first substrate layer, a first conductor layer, and a first adhesive layer stacked sequentially; the first adhesive layer is connected to the electromagnetic shielding bracket.

[0013] In some embodiments, the second cover includes a second substrate layer, a second conductor layer, and a second adhesive layer stacked sequentially; the second adhesive layer is connected to the electromagnetic shielding bracket.

[0014] In some embodiments, the electromagnetic shielding support is a carbon fiber plastic support, and the electromagnetic shielding cover is a carbon fiber plastic cover.

[0015] Secondly, embodiments of this application provide an electronic device.

[0016] The electronic device provided in this application includes any of the battery components provided in this application.

[0017] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0018] In the embodiments of this application, the circuit board is disposed in the circuit board receiving groove of the electromagnetic shielding bracket, and the electromagnetic shielding cover plate covers the groove opening of the circuit board receiving groove, so that the circuit board is disposed between the electromagnetic shielding bracket and the electromagnetic shielding cover plate, so as to use the electromagnetic shielding bracket and the electromagnetic shielding cover plate surrounding the circuit board to shield electromagnetic interference, thereby improving the electromagnetic interference resistance performance of the circuit board of the battery assembly.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a battery assembly provided in an embodiment of this application;

[0022] Figure 2 for Figure 1 An exploded view of the battery assembly is shown in the image.

[0023] Figure 3 An exploded view of an electromagnetic shielding bracket, circuit board, and electromagnetic shielding cover provided in an embodiment of this application;

[0024] Figure 4 A schematic diagram of an electromagnetic shielding bracket provided in an embodiment of this application;

[0025] Figure 5 A schematic diagram of an electromagnetic shielding bracket and an electromagnetic shielding cover provided for an embodiment of this application;

[0026] Figure 6 for Figure 1 A schematic diagram of the battery assembly from another angle is shown in the image;

[0027] Figure 7 for Figure 1 A schematic diagram of the battery assembly from another angle is shown in the image;

[0028] Figure 8 A schematic diagram of a first cover provided in an embodiment of this application;

[0029] Figure 9 This is a schematic diagram of a second cover provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Battery assembly;

[0032] 100-Electromagnetic shielding bracket; 100a-Circuit board receiving slot; 100b-Battery cell receiving hole; 110-First main body; 120-First protrusion;

[0033] 200 - Circuit board; 210 - Third main body; 220 - Third protrusion;

[0034] 300 - Electromagnetic shielding cover; 310 - Second main body; 320 - Second protrusion;

[0035] 400-cell;

[0036] 500 - First cover; 510 - First substrate layer; 520 - First conductor layer; 530 - First adhesive layer; 540 - First flame retardant layer;

[0037] 600 - Second cover; 610 - Second substrate layer; 620 - Second conductor layer; 630 - Second adhesive layer; 640 - Second flame retardant layer. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] Furthermore, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application specification may have been selected by the applicant at his or her own discretion, and their detailed meanings are explained in the relevant sections of this description.

[0041] Furthermore, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0042] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0043] This application provides a battery assembly. (See reference...) Figures 1 to 9 The battery assembly 1 provided in this embodiment includes: an electromagnetic shielding bracket 100, a circuit board 200, an electromagnetic shielding cover 300, a battery cell 400, a first cover 500, and a second cover 600. It should be noted that the circuit board 200 of the battery assembly 1 is also called a protection board or battery protection board. The circuit board 200 is mainly used for overcharge protection, over-discharge protection, and overcurrent and short-circuit protection.

[0044] The electromagnetic shielding bracket 100 has a circuit board receiving slot 100a and a battery cell receiving hole 100b. A circuit board 200 is disposed in the circuit board receiving slot 100a, and an electromagnetic shielding cover plate 300 covers the opening of the circuit board receiving slot 100a. A battery cell 400 is disposed in the battery cell receiving hole 100b and is electrically connected to the circuit board 200. A first cover 500 and a second cover 600 respectively cover both sides of the battery cell receiving hole 100b.

[0045] In this manner, in the embodiments of this application, the circuit board 200 is disposed in the circuit board receiving groove 100a of the electromagnetic shielding bracket 100, and the electromagnetic shielding cover plate 300 covers the groove opening of the circuit board receiving groove 100a, so that the circuit board 200 is disposed between the electromagnetic shielding bracket 100 and the electromagnetic shielding cover plate 300, so as to use the electromagnetic shielding bracket 100 and the electromagnetic shielding cover plate 300 surrounding the circuit board 200 to shield electromagnetic interference, thereby improving the electromagnetic interference resistance performance of the circuit board 200 of the battery assembly 1.

[0046] In some embodiments, the electromagnetic shielding bracket 100 is a carbon fiber plastic bracket. Exemplarily, the carbon fiber plastic bracket is manufactured by injection molding. For example, before injection molding, carbon fibers are mixed into molten plastic, and then the plastic mixed with carbon fibers is used as a raw material to process the carbon fiber plastic bracket through injection molding. Furthermore, color masterbatch may also be mixed into the carbon fiber plastic.

[0047] It should be noted that carbon fiber is a conductive material. The carbon atoms inside carbon fiber are arranged in a specific structure, allowing electrons to move freely within the fiber. When electromagnetic waves encounter carbon fiber, an induced current is generated on its surface, forming a reflected wave opposite to the incident electromagnetic wave, thus reducing the penetration of the electromagnetic wave. In addition to reflection, carbon fiber can also absorb some electromagnetic waves. When electromagnetic waves enter the interior of carbon fiber, they generate eddy current losses and dielectric losses in the conductive network of the fiber, converting the energy of the electromagnetic wave into heat energy, thereby reducing the intensity of the electromagnetic wave.

[0048] Carbon fibers have a slender structure and a certain directionality. When carbon fiber plastic is made, the fibers form a complex interwoven network. This interwoven network structure can cause multiple reflections and scatterings of electromagnetic waves, further weakening the propagation of electromagnetic waves. Therefore, the electromagnetic shielding bracket 100 uses a plastic material reinforced with carbon fibers, which can effectively prevent strong electromagnetic interference from affecting the circuit board 200.

[0049] In some embodiments, the electromagnetic shielding cover 300 is a carbon fiber plastic cover. Since the carbon fiber plastic cover is made of a similar material to the carbon fiber plastic support, it will not be described in detail here.

[0050] In other embodiments, the electromagnetic shielding support 100 includes a first substrate layer and a first metal layer covering the surface of the first substrate layer. For example, a metal plating layer can be formed on the surface of the substrate layer to enable the electromagnetic shielding support 100 to have electromagnetic shielding function. Similarly, the electromagnetic shielding cover 300 may include a second substrate layer and a second metal layer covering the surface of the second substrate layer.

[0051] refer to Figures 2 to 5 In some embodiments, the electromagnetic shielding bracket 100 includes a first main body portion 110 and a first protrusion portion 120 connected to each other. A circuit board receiving groove 100a is provided in the first main body portion 110 and the first protrusion portion 120.

[0052] The electromagnetic shielding cover 300 includes a second main body portion 310 and a second protrusion portion 320 connected to each other. The second main body portion 310 is opposite to the area of ​​the circuit board receiving groove 100a located in the first protrusion portion 120, and the second protrusion portion 320 is opposite to the area of ​​the circuit board receiving groove 100a located in the first main body portion 110.

[0053] The circuit board 200 includes a third main body portion 210 and a third protrusion portion 220 connected to each other. The third main body portion 210 is located between the first protrusion portion 120 and the second main body portion 310, and the third protrusion portion 220 is located between the first main body portion 110 and the second protrusion portion 320.

[0054] In this way, the third main body 210 of the circuit board 200 can be disposed between the first protrusion 120 of the electromagnetic shielding bracket 100 and the second main body 310 of the electromagnetic shielding cover plate 300, and the third protrusion 220 of the circuit board 200 can be disposed between the first main body 110 of the electromagnetic shielding bracket 100 and the second protrusion 320 of the electromagnetic shielding cover plate 300. The circuit board 200 located between the two can be electromagnetically shielded by the interlocking electromagnetic shielding bracket 100 and electromagnetic shielding cover plate 300.

[0055] In some embodiments, the cell receiving hole 100b is provided on the first main body portion 110. In this way, by providing the cell receiving hole 100b on the first main body portion 110, the cell receiving hole 100b can be distributed more regularly, thereby improving the regularity of the arrangement of the cell 400.

[0056] In some embodiments, the number of cell receiving holes 100b is at least two, and the at least two cell receiving holes 100b are spaced apart along the length direction of the battery assembly 1. The number of cells 400 is equal to the number of cell receiving holes 100b, and the cells 400 are correspondingly disposed in the cell receiving holes 100b. A third protrusion 220 is located between two adjacent cells 400, and the third protrusion 220 is used for electrical connection with the cell 400 adjacent to the third protrusion 220. In this way, the outer surface of the first main body portion 110 of the electromagnetic shielding support 100 can be rectangular, thereby improving the compactness of the battery assembly 1.

[0057] For example, there are two battery cells 400 and one third protrusion 220. The two battery cells 400 are respectively disposed on both sides of the third protrusion 220, and both battery cells 400 are connected to the third protrusion 220. In other embodiments, the number of battery cells 400 can be one, three, four, five, etc., which will not be listed here. (Refer to...) Figure 2 When there are three battery cells 400, there are two third protrusions 220. One of the third protrusions 220 is electrically connected to two battery cells 400, and the other third protrusion 220 is electrically connected to another battery cell 400.

[0058] In some embodiments, the first cover 500 is a first electromagnetic shielding cover. (See reference...) Figure 2 The first cover 500 covers the side of the electromagnetic shielding bracket 100 where the electromagnetic shielding cover plate 300 is located, and the second protrusion 320 is located between the first cover 500 and the electromagnetic shielding bracket 100. (Reference) Figure 6 The second main body 310 is exposed on the outer surface of the battery assembly 1. In this way, the electromagnetic shielding performance of the side of the battery assembly 1 where the first cover 500 is provided can be improved by setting the first cover 500 as the first electromagnetic shielding cover.

[0059] In some embodiments, the second cover 600 is a second electromagnetic shielding cover. (See reference...) Figure 2 The second cover 600 is disposed on the side of the electromagnetic shielding bracket 100 opposite to the first cover 500, and the first main body 110 is located between the second cover 600 and the first cover 500. (Reference) Figure 7 The first protrusion 120 is exposed on the outer surface of the battery assembly 1. In this way, the electromagnetic shielding performance of the side of the battery assembly 1 with the second cover 600 can be improved by setting the second cover 600 as a second electromagnetic shielding cover.

[0060] It should be noted that, in the embodiments of this application, by using the first electromagnetic shielding cover and the second electromagnetic shielding cover to cover both sides of the cell receiving hole 100b respectively, the two sides of the cell 400 along its own thickness direction are covered by the first electromagnetic shielding cover and the second electromagnetic shielding cover respectively, and the various sides of the cell 400 in the circumferential direction are blocked by the hole wall of the cell receiving hole 100b of the electromagnetic shielding bracket 100, thereby improving the anti-electromagnetic interference performance of the cell 400.

[0061] refer to Figure 8 In some embodiments, the first cover 500 includes a first substrate layer 510, a first conductor layer 520, and a first adhesive layer 530 stacked sequentially. The first adhesive layer 530 is used to connect with the electromagnetic shielding bracket 100. In this way, the connection between the first cover 500 and the electromagnetic shielding bracket 100 is improved by bonding the first adhesive layer 530 of the first cover 500 to the electromagnetic shielding bracket 100.

[0062] It should be noted that the first conductor layer 520 can be a metal material layer such as copper foil or aluminum foil, or a nanomaterial layer such as graphene or carbon nanotubes. When electromagnetic waves are incident on the surface of the first conductor layer 520, the electromagnetic waves will be reflected due to the impedance discontinuity at the interface between the air and the conductive layer. For low-frequency electromagnetic waves, the high permeability of the first conductor layer 520 allows it to guide the magnetic field lines to flow inside the first conductor layer 520, reducing interference from external magnetic fields.

[0063] In some embodiments, the first cover 500 further includes a first flame-retardant layer 540. The first flame-retardant layer 540 is disposed between the first conductor layer 520 and the first adhesive layer 530 to improve the flame-retardant performance of the first cover 500.

[0064] refer to Figure 9 In some embodiments, the second cover 600 includes a second substrate layer 610, a second conductor layer 620, and a second adhesive layer 630 stacked sequentially. The second adhesive layer 630 is used to connect with the electromagnetic shielding bracket 100. This improves the ease of connection between the second cover 600 and the electromagnetic shielding bracket 100 by bonding the second adhesive layer 630 of the second cover 600 to the electromagnetic shielding bracket 100. The second conductor layer 620 is made of a similar material to the first conductor layer 520, and will not be described further here.

[0065] In some embodiments, the second cover 600 further includes a second flame-retardant layer 640. The second flame-retardant layer 640 is disposed between the second conductor layer 620 and the second adhesive layer 630 to improve the flame-retardant properties of the second cover 600.

[0066] It should be noted that, in some embodiments, the first cover 500 may be a first Mylar sheet having a first conductor layer 520. The second cover 600 may be a second Mylar sheet having a second conductor layer 620.

[0067] To enable those skilled in the art to better implement the solutions provided in the embodiments of this application, the assembly method of battery component 1 is briefly described below for reference.

[0068] refer to Figures 2 to 5 First, the battery cell 400 and the circuit board 200 can be connected. Then, the circuit board 200 can be placed in the circuit board receiving slot 100a of the electromagnetic shielding bracket 100, and the battery cell 400 can be placed in the battery cell receiving hole 100b of the electromagnetic shielding bracket 100. Further, the first cover 500 and the second cover 600 can respectively cover both sides of the battery cell receiving hole 100b. If the first cover 500 has a first adhesive layer 530, the first cover 500 can be bonded to the electromagnetic shielding bracket 100 and the surface of the battery cell 400. If the second cover 600 has a second adhesive layer 630, the second cover 600 can be bonded to the electromagnetic shielding bracket 100 and the surface of the battery cell 400. It should be noted that the first cover 500 and the second cover 600 are respectively located on opposite sides of the electromagnetic shielding bracket 100.

[0069] This application provides an electronic device. The electronic device provided in this application includes any of the battery components 1 provided in this application. Exemplarily, the electronic device is a laptop or tablet computer. Alternatively, the electronic device is a mobile phone. Further examples are not listed here.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the embodiments of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery assembly, characterized in that, include: Electromagnetic shielding bracket (100), circuit board (200), electromagnetic shielding cover plate (300), battery cell (400), first cover (500) and second cover (600); The electromagnetic shielding bracket (100) is provided with a circuit board receiving groove (100a) and a battery cell receiving hole (100b). The circuit board (200) is disposed in the circuit board receiving groove (100a), and the electromagnetic shielding cover (300) covers the opening of the circuit board receiving groove (100a); The battery cell (400) is disposed in the battery cell receiving hole (100b), and the battery cell (400) is electrically connected to the circuit board (200); The first cover (500) and the second cover (600) respectively cover both sides of the cell receiving hole (100b).

2. The battery assembly according to claim 1, characterized in that, The electromagnetic shielding bracket (100) includes a first main body (110) and a first protrusion (120) connected to each other, and the circuit board receiving groove (100a) is provided in the first main body (110) and the first protrusion (120). The electromagnetic shielding cover (300) includes a second main body (310) and a second protrusion (320) connected to each other. The second main body (310) is opposite to the area of ​​the circuit board receiving groove (100a) located in the first protrusion (120), and the second protrusion (320) is opposite to the area of ​​the circuit board receiving groove (100a) located in the first main body (110). The circuit board (200) includes a third main body (210) and a third protrusion (220) connected to each other; the third main body (210) is located between the first protrusion (120) and the second main body (310), and the third protrusion (220) is located between the first main body (110) and the second protrusion (320).

3. The battery assembly according to claim 2, characterized in that, The cell receiving hole (100b) is provided in the first main body (110).

4. The battery assembly according to claim 3, characterized in that, The number of the cell receiving holes (100b) is at least two, and the at least two cell receiving holes (100b) are spaced apart along the length direction of the battery assembly; The number of the battery cells (400) is equal to the number of the battery cell receiving holes (100b), and the battery cells (400) are disposed in the battery cell receiving holes (100b) in a one-to-one correspondence. The third protrusion (220) is located between two adjacent cells (400) and is used to electrically connect with the cell (400) adjacent to the third protrusion (220).

5. The battery assembly according to claim 2, characterized in that, The first cover (500) is a first electromagnetic shielding cover, which covers the side of the electromagnetic shielding bracket (100) where the electromagnetic shielding cover plate (300) is located. The second protrusion (320) is located between the first cover (500) and the electromagnetic shielding bracket (100), and the second main body (310) is exposed on the outer surface of the battery assembly.

6. The battery assembly according to claim 5, characterized in that, The second cover (600) is a second electromagnetic shielding cover. The second cover (600) covers the side of the electromagnetic shielding bracket (100) away from the first cover (500). The first main body (110) is located between the second cover (600) and the first cover (500). The first protrusion (120) is exposed on the outer surface of the battery assembly.

7. The battery assembly according to claim 1, characterized in that, The first cover (500) includes a first substrate layer (510), a first conductor layer (520) and a first adhesive layer (530) stacked in sequence; the first adhesive layer (530) is connected to the electromagnetic shielding bracket (100).

8. The battery assembly according to claim 1, characterized in that, The second cover (600) includes a second substrate layer (610), a second conductor layer (620) and a second adhesive layer (630) stacked in sequence; the second adhesive layer (630) is connected to the electromagnetic shielding bracket (100).

9. The battery assembly according to claim 1, characterized in that, The electromagnetic shielding bracket (100) is a carbon fiber plastic bracket, and the electromagnetic shielding cover plate (300) is a carbon fiber plastic cover plate.

10. An electronic device, characterized in that, include: The battery assembly according to any one of claims 1 to 9.

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