A protection plate, battery and electronic device

Abstract

The application provides a protection plate, a battery and an electronic device, and relates to the technical field of batteries. The protection plate comprises a printed circuit board, a conductive part connected to the printed circuit board, and a flexible circuit board connected to the printed circuit board. The part of the conductive part away from the printed circuit board is used for being connected to a battery cell, the part of the flexible circuit board connected to the printed circuit board and the conductive part are located on the same side of the printed circuit board, and the part of the flexible circuit board connected to the printed circuit board and the part of the conductive part away from the printed circuit board at least partially overlap. The protection plate provided by the application can reduce the occupied space of the conductive part and the flexible circuit board, so that the structure of the protection plate is more compact, and thus the energy density of the battery is improved.

Description

Technical Field

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

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] Batteries in electronic devices are typically equipped with a Protection Circuit Module (PCM) to monitor the cell's usage status, thereby ensuring the cell's safety and performance. To achieve the electrical connection between the electronic device and the cell, the PCM's printed circuit board contains conductive components and a flexible printed circuit board (FPC). However, these components and FPC occupy considerable space, affecting the battery's space utilization and hindering the improvement of battery energy density. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a protection board, a battery, and an electronic device, which aims to solve the technical problem of how to improve the energy density of the battery.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a protection board, comprising:

[0007] Printed circuit boards;

[0008] A conductive element, a portion of which is connected to the printed circuit board, and a portion of the conductive element away from the printed circuit board is used to connect to the battery cell;

[0009] A flexible circuit board, a portion of which is connected to the printed circuit board, wherein the portion of the flexible circuit board connected to the printed circuit board and the conductive element are located on the same side of the printed circuit board, and the portion of the flexible circuit board connected to the printed circuit board and the portion of the conductive element away from the printed circuit board at least partially overlap.

[0010] In one embodiment of the first aspect, the conductive element includes a first conductive portion, a second conductive portion, and a third conductive portion. The first conductive portion is connected to the printed circuit board, the second conductive portion is used to connect to the battery cell, and the third conductive portion is connected to the first conductive portion and the second conductive portion. The first conductive portion and the second conductive portion at least partially overlap, and the portion of the flexible circuit board connected to the printed circuit board at least partially overlaps with the second conductive portion.

[0011] In one embodiment of the first aspect, the flexible circuit board includes a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion is connected to the side of the printed circuit board facing the conductive element, the second connecting portion is located on the side of the printed circuit board away from the conductive element, and the third connecting portion is connected to the first connecting portion and the second connecting portion. The first connecting portion and the second connecting portion at least partially overlap, and the second conductive portion and the first connecting portion at least partially overlap.

[0012] In one embodiment of the first aspect, the protection board further includes pads, the first connection portion being connected to the side of the printed circuit board facing the conductive element via the pads, and the second connection portion and the side of the printed circuit board facing away from the conductive element being spaced apart.

[0013] In one embodiment of the first aspect, a plurality of electronic devices are disposed on the printed circuit board, each of the electronic devices being located on the side of the printed circuit board facing the conductive element.

[0014] Secondly, embodiments of this application provide a battery including a battery cell, an injection molded part, and a protection plate as described in any of the embodiments of the first aspect above. The battery cell is connected to the portion of the conductive element away from the printed circuit board, and the injection molded part is connected to the battery cell, the conductive element, the printed circuit board, and the flexible circuit board.

[0015] In one embodiment of the second aspect, the injection molded part includes a first injection body and a second injection body connected together. The first injection body is connected to the battery cell, the conductive element, the printed circuit board, and the flexible circuit board. A portion of the printed circuit board and the conductive element are located within the first injection body. The second injection body is located on the side of the printed circuit board facing away from the battery cell, and the side of the printed circuit board facing away from the battery cell is exposed outside the first injection body.

[0016] In one embodiment of the second aspect, at least a portion of the printed circuit board is located within the injection molded part, and a recess is provided on the outer peripheral side of the printed circuit board, at least a portion of the recess being located within the injection molded part.

[0017] In one embodiment of the second aspect, the outer periphery of the printed circuit board is provided with a plurality of recesses, and two adjacent recesses are spaced apart.

[0018] Thirdly, embodiments of this application provide an electronic device including a motherboard and a battery as described in any of the embodiments of the second aspect above, wherein the motherboard is connected to the flexible circuit board.

[0019] The beneficial effects of this application are as follows:

[0020] This application provides a protection board including a printed circuit board, a conductive element, and a flexible circuit board. A portion of the conductive element is connected to the printed circuit board, and a portion of the conductive element away from the printed circuit board is used to connect to a battery cell. A portion of the flexible circuit board is connected to the printed circuit board. Since the portion of the flexible circuit board connected to the printed circuit board and the conductive element are located on the same side of the printed circuit board, and the portion of the flexible circuit board connected to the printed circuit board and the portion of the conductive element away from the printed circuit board at least partially overlap, the space occupied by the conductive element and the flexible circuit board can be reduced, making the structure of the protection board more compact, thereby improving the energy density of the battery.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This paper shows a schematic diagram of the assembly structure of the protective plate from one perspective in one embodiment of the present application;

[0024] Figure 2 This invention provides a schematic diagram of the assembly structure of the protective plate from another perspective in one embodiment of the present application.

[0025] Figure 3 It shows Figure 2 Schematic diagram of the exploded structure of the middle protection plate Figure 1 ;

[0026] Figure 4 It shows Figure 2 Schematic diagram of the exploded structure of the middle protection plate Figure 2 ;

[0027] Figure 5A schematic diagram of the battery assembly structure in one embodiment of this application is shown;

[0028] Figure 6 It shows Figure 5 Enlarged structural diagram of region A in the middle;

[0029] Figure 7 It shows Figure 5 A schematic diagram of the exploded structure of a battery.

[0030] Explanation of key component symbols:

[0031] 1000 - Battery; 100 - Protection board; 110 - Printed circuit board; 111 - Recessed portion; 120 - Conductive component; 121 - First conductive portion; 122 - Second conductive portion; 123 - Third conductive portion; 130 - Flexible circuit board; 131 - First connecting portion; 132 - Second connecting portion; 133 - Third connecting portion; 140 - Electronic component; 200 - Battery cell; 210 - Package; 211 - Top wall; 212 - Bottom wall; 213 - Outer peripheral wall; 214 - Top sealing edge; 215 - Side sealing edge; 220 - Tab; 300 - Injection molded part; 310 - First injection molded body; 320 - Second injection molded body; 400 - First adhesive layer; 500 - Second adhesive layer. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this application, the terms "first," "second," etc., are used to distinguish different objects and should not be construed as indicating or implying a specific order or hierarchy, or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0036] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0038] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0039] like Figure 1 and Figure 5As shown, an embodiment of this application provides a protection circuit module (PCM) 100, which relates to the field of battery technology. It is mainly used in a battery 1000 with a cell 200 to monitor the usage status of the cell 200, thereby ensuring the safety and performance of the cell 200.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, the protection board 100 provided in this embodiment includes: a printed circuit board 110 (PCB), a conductive component 120, and a flexible printed circuit board 130 (FPC).

[0041] In this circuit, a portion of the conductive element 120 is connected to the printed circuit board 110, and the portion of the conductive element 120 away from the printed circuit board 110 is used to connect to the battery cell 200; a portion of the flexible circuit board 130 is connected to the printed circuit board 110, and the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the conductive element 120 are located on the same side of the printed circuit board 110, and the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 at least partially overlap.

[0042] For example, the conductive element 120 can be a conductive sheet, such as a nickel sheet, copper sheet, nickel-plated copper sheet, silver-plated copper sheet, aluminum sheet, stainless steel sheet, etc. Of course, the conductive element 120 can also be a wire, such as a copper wire, nickel-plated copper wire, silver-plated copper wire, aluminum wire, etc., and no specific limitation is made on the type of conductive element 120 here.

[0043] It should be noted that when the battery cell 200 has tabs 220 (e.g., a pouch cell), the portion of the conductive element 120 away from the printed circuit board 110 is used to connect to the tabs 220, so that this type of battery cell 200 is electrically connected to the protection board 100. When the battery cell 200 has terminals (e.g., a prismatic cell, a cylindrical cell, etc.), the portion of the conductive element 120 away from the printed circuit board 110 is used to connect to the terminals, so that this type of battery cell 200 is electrically connected to the protection board 100. No specific restrictions are placed on the type of battery cell 200 here.

[0044] It should be noted that the term "the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 at least partially overlap" can be understood as: the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 partially overlap; or, the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 completely overlap.

[0045] The term "at least partially overlapping" can be understood as follows: the orthographic projections of the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 on a plane perpendicular to the thickness direction of the printed circuit board 110 at least partially coincide. This plane can be a solid plane, for example, the solid plane being the side of the printed circuit board 110 facing the conductive element 120; or, the solid plane being the side of the printed circuit board 110 away from the conductive element 120. Of course, this plane can also be a virtual plane formed by geometric construction, a virtual plane that does not exist on the printed circuit board 110 but satisfies the relationship of being perpendicular to the thickness direction of the printed circuit board 110.

[0046] Furthermore, the term "overlap" only indicates that the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 coincide on a plane perpendicular to the thickness direction of the printed circuit board 110, and does not indicate the contact state between the two. That is, the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 may be in a state of non-contact or in a state of contact.

[0047] It is understood that the protection board 100 provided in this embodiment has a more compact structure because the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the conductive element 120 are located on the same side of the printed circuit board 110, and the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 at least partially overlap. This reduces the space occupied by the conductive element 120 and the flexible circuit board 130, thereby improving the energy density of the battery 1000.

[0048] like Figures 2 to 4As shown, in one embodiment, the conductive element 120 includes a first conductive portion 121, a second conductive portion 122, and a third conductive portion 123. The first conductive portion 121 is connected to the printed circuit board 110, the second conductive portion 122 is used to connect to the battery cell 200, and the third conductive portion 123 is connected to the first conductive portion 121 and the second conductive portion 122. The first conductive portion 121 and the second conductive portion 122 at least partially overlap, and the portion of the flexible circuit board 130 connected to the printed circuit board 110 at least partially overlaps with the second conductive portion 122.

[0049] For example, the third conductive part 123 can be an arc-shaped conductive part, a straight conductive part, etc., all of which can serve as a connection medium between the first conductive part 121 and the second conductive part 122. No specific restrictions are placed on the structure of the third conductive part 123 here.

[0050] It is understood that, since the first conductive part 121 and the second conductive part 122 at least partially overlap, the portion of the flexible circuit board 130 that connects to the printed circuit board 110 also at least partially overlaps with the second conductive part 122. This allows for a more effective reduction in the space occupied by the conductive part 120 and the flexible circuit board 130.

[0051] like Figures 2 to 4 As shown, the flexible circuit board 130 further includes a first connecting portion 131, a second connecting portion 132, and a third connecting portion 133. The first connecting portion 131 is connected to the side of the printed circuit board 110 facing the conductive member 120. The second connecting portion 132 is located on the side of the printed circuit board 110 away from the conductive member 120. The third connecting portion 133 is connected to the first connecting portion 131 and the second connecting portion 132. The first connecting portion 131 and the second connecting portion 132 at least partially overlap. The second conductive portion 122 and the first connecting portion 131 at least partially overlap.

[0052] For example, the third connecting part 133 can be an arc-shaped connecting part, a straight connecting part, etc., all of which can serve as a connection medium between the first connecting part 131 and the second connecting part 132. No specific limitations are placed on the structure of the third connecting part 133 here. It should be noted that the function of the second connecting part 132 is to connect to the motherboard of the electronic device to achieve an electrical connection between the protection board 100 and the motherboard of the electronic device.

[0053] It is understood that, since the first connecting portion 131 and the second connecting portion 132 at least partially overlap, the second conductive portion 122 and the first connecting portion 131 also at least partially overlap. This further reduces the space occupied by the conductive element 120 and the flexible circuit board 130.

[0054] Furthermore, the protection board 100 also includes pads, the first connection portion 131 is connected to the side of the printed circuit board 110 facing the conductive element 120 via the pads, and the second connection portion 132 and the side of the printed circuit board 110 away from the conductive element 120 are spaced apart.

[0055] Understandably, since exposed solder pads require adhesive protection, and the sealant used for adhesive application occupies space on the protection board 100, it reduces the energy density of the battery 1000. In this embodiment, the first connection portion 131 is connected to the side of the printed circuit board 110 facing the conductive element 120 via solder pads, while the second connection portion 132 and the side of the printed circuit board 110 away from the conductive element 120 are spaced apart, meaning the second connection portion 132 is not connected to the printed circuit board 110. This eliminates the need for solder pads on the second connection portion 132, saving on sealant usage and thus increasing the energy density of the battery 1000.

[0056] In another embodiment, the conductive element 120 includes a first conductive portion 121, a second conductive portion 122, and a third conductive portion 123. The first conductive portion 121 is connected to the printed circuit board 110, the second conductive portion 122 is used to connect to the battery cell 200, and the third conductive portion 123 is connected to the first conductive portion 121 and the second conductive portion 122. The flexible circuit board 130 includes a first connecting portion 131, a second connecting portion 132, and a third connecting portion 133. The first connecting portion 131 is connected to the side of the printed circuit board 110 facing the conductive element 120, the second connecting portion 132 is located on the side of the printed circuit board 110 away from the conductive element 120, and the third connecting portion 133 is connected to the first connecting portion 131 and the second connecting portion 132. The second conductive portion 122 and the first connecting portion 131 at least partially overlap, while the first conductive portion 121 and the second conductive portion 122 do not overlap, and the first connecting portion 131 and the second connecting portion 132 do not overlap. No specific limitations are imposed on the structure of the conductive element 120 and the flexible circuit board 130.

[0057] like Figure 1 and Figure 2 As shown, in one embodiment, a plurality of electronic devices 140 are disposed on the printed circuit board 110, each electronic device 140 being located on the side of the printed circuit board 110 facing the conductive element 120.

[0058] For example, electronic device 140 may be a chip (IC), a field-effect transistor (MOSFET), a resistor, a capacitor, a thermistor (NTC), a fuse, a diode, etc., and no specific limitation is made on the type of electronic device 140.

[0059] It is understandable that, since the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the conductive element 120 are located on the same side of the printed circuit board 110, and the portion of the flexible circuit board 130 connected to the printed circuit board 110 and the portion of the conductive element 120 away from the printed circuit board 110 at least partially overlap, the space for the printed circuit board 110 facing the conductive element 120 is increased, that is, the space for arranging electronic devices 140 on the side of the printed circuit board 110 facing the conductive element 120 is increased. On this basis, each electronic device 140 is located on the side of the printed circuit board 110 facing the conductive element 120, thereby realizing single-sided component arrangement on the printed circuit board 110, that is, all electronic devices 140 are arranged on the side of the printed circuit board 110 facing the conductive element 120, that is, the conductive element 120, the portion of the flexible circuit board 130 connected to the printed circuit board 110 and all electronic devices 140 are located on the same side of the printed circuit board 110. This design can further improve the structural compactness of the protection board 100, thereby improving the space utilization of the battery 1000 and thus contributing to the improvement of the energy density of the battery 1000.

[0060] It should be noted that when the flexible circuit board 130 includes a first connecting portion 131, a second connecting portion 132 and a third connecting portion 133, the first connecting portion 131 and each electronic device 140 are located on the side of the printed circuit board 110 facing the conductive element 120, that is, the first connecting portion 131, the conductive element 120 and each electronic device 140 are all located on the same side of the printed circuit board 110.

[0061] like Figure 1 and Figure 5 As shown, an embodiment of this application also provides a battery 1000, mainly used in electronic devices for storing electrical energy and supplying power to the electronic devices. The battery 1000 provided in this embodiment includes: a battery cell 200, an injection-molded part 300, and a protection plate 100 as described in any of the embodiments of the first aspect above.

[0062] In this configuration, the battery cell 200 is connected to the portion of the conductive component 120 that is away from the printed circuit board 110, and the injection molded component 300 is connected to the battery cell 200, the conductive component 120, the printed circuit board 110, and the flexible circuit board 130. This enables the protection board 100 to be integrally injection molded and sealed by the injection molded component 300, and makes the protection board 100 firmly connected to the battery cell 200.

[0063] For example, the material of the injection molded part 300 can be plastic, ceramic or other materials with insulating properties, and no specific restrictions are placed on the type of injection molded part 300.

[0064] It is understood that since the battery 1000 provided in this embodiment has the protection board 100 in any of the above embodiments, it has all the beneficial effects of the protection board 100, which will not be described in detail here.

[0065] like Figures 5 to 7 As shown, in one embodiment, the injection molded part 300 includes a first injection body 310 and a second injection body 320 connected to each other. The first injection body 310 is connected to the battery cell 200, the conductive element 120, the printed circuit board 110 and the flexible circuit board 130. A portion of the printed circuit board 110 and the conductive element 120 are located inside the first injection body 310. The second injection body 320 is located on the side of the printed circuit board 110 away from the battery cell 200. The side of the printed circuit board 110 away from the battery cell 200 is exposed outside the first injection body 310.

[0066] It should be noted that, for the sake of convenience in describing this application, the thickness direction of the printed circuit board 110 is defined herein as the height direction of the battery 1000 (refer to...). Figure 5 (The perspective shown). It is understood that the flexible circuit board 130 typically occupies space in the height direction of the battery 1000, and the flexible circuit board 130 needs to have a certain amount of room to move after the battery 1000 is installed in the electronic device, which is satisfied by providing the second injection body 320.

[0067] However, in the prior art, the first injection molding body 310 covers the side of the printed circuit board 110 away from the conductive element 120, which increases the height of the second injection molding body 320, causing the injection molding part 300 to occupy more space in the height direction of the battery 1000. In this embodiment, by exposing the side of the printed circuit board 110 away from the cell 200 outside the first injection molding body 310, that is, the first injection molding body 310 does not cover the side of the printed circuit board 110 away from the conductive element 120, the height of the second injection molding body 320 can be reduced, thereby reducing the space occupied by the injection molding part 300 in the battery 1000 and improving the energy density of the battery 1000.

[0068] like Figure 1 and Figure 5 As shown, in one embodiment, at least a portion of the printed circuit board 110 is located within the injection molded part 300, and a recess 111 is provided on the outer peripheral side of the printed circuit board 110, at least a portion of the recess 111 being located within the injection molded part 300.

[0069] It is understandable that by setting the recess 111, the contact area between the printed circuit board 110 and the injection molded part 300 can be increased, thereby increasing the strength and stability of the connection between the printed circuit board 110 and the injection molded part 300 and reducing the possibility of detachment.

[0070] like Figure 3 and Figure 4 As shown, in one embodiment, a plurality of recesses 111 are provided on the outer periphery of the printed circuit board 110, with adjacent recesses 111 spaced apart.

[0071] For example, the number of recesses 111 can be two, three, four, five, etc., without any specific limitation.

[0072] It is understandable that by providing multiple recesses 111, the contact area between the printed circuit board 110 and the injection molded part 300 can be further increased, thereby further reducing the possibility of the printed circuit board 110 or the injection molded part 300 falling off.

[0073] It should be noted that when the injection molded part 300 includes a first injection body 310 and a second injection body 320, at least a portion of each recess 111 is located within the first injection body 310.

[0074] like Figure 1 , Figure 5 and Figure 7 As shown, in one embodiment, the battery 1000 further includes a first adhesive layer 400 and a second adhesive layer 500. The battery cell 200 includes an electrode assembly and a package 210. The electrode assembly includes an electrode body and tabs 220. The package 210 includes a top wall 211, a bottom wall 212, an outer peripheral wall 213, a top sealing edge 214, and a side sealing edge 215. The top wall 211 and the bottom wall 212 are disposed opposite to each other. The outer peripheral wall 213 is connected to the top wall 211 and the bottom wall 212 and is disposed along the circumference of the electrode body. The electrode body is encapsulated in the top wall 211, the bottom wall 212, and the outer peripheral wall 215. Within the cavity defined by 13, the top sealing edge 214 is connected to the top wall 211, the side sealing edge 215 is connected to the outer peripheral wall 213 and partially protrudes from the top wall 211, the portion of the side sealing edge 215 protruding from the top wall 211 is connected to the top sealing edge 214, the tab 220 is disposed through the top sealing edge 214 and extends beyond the package 210, the portion of the tab 220 extending beyond the package 210 is connected to the portion of the conductive element 120 away from the printed circuit board 110, and the portion of the top sealing edge 214 away from the top wall 211 is bent and stacked on the top wall 211.

[0075] The first adhesive layer 400 is connected to the top wall 211 and the top sealing edge 214 to fix the top sealing edge 214; the second adhesive layer 500 is connected to the part of the flexible circuit board 130 away from the conductive part 120 and the injection molded part 300 to fix the flexible circuit board 130.

[0076] For example, the first adhesive layer 400 and / or the second adhesive layer 500 may be a layered structure with insulating and adhesive functions, such as adhesive paper or tape, without any specific limitations.

[0077] Embodiments of this application also provide an electronic device, including a motherboard and a battery 1000 as described in any of the above embodiments, wherein the motherboard is connected to a flexible circuit board 130.

[0078] It should be noted that when the flexible circuit board 130 includes a first connecting part 131, a second connecting part 132 and a third connecting part 133, the motherboard is connected to the second connecting part 132.

[0079] For example, electronic devices can be mobile phones, tablets, laptops, smartwatches, e-book readers, portable game consoles, wireless headphones, digital cameras, camcorders, electric toothbrushes, and shavers, etc.

[0080] Of course, the aforementioned battery 1000 can be used not only in electronic devices but also in other electrical equipment, such as vehicles, spacecraft, and power tools. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, and new energy vehicles, including pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles; spacecraft can be drones, airplanes, and rockets; power tools can be metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, etc. No specific restrictions are placed on the products to which the aforementioned battery 1000 can be applied.

[0081] It is understood that since the electronic device provided in this embodiment has the battery 1000 in any of the above embodiments, it has all the beneficial effects of the battery 1000, which will not be described in detail here.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A protective plate, characterized in that, include: Printed circuit board (110); A conductive element (120), a portion of which is connected to the printed circuit board (110), and a portion of the conductive element (120) away from the printed circuit board (110) is used to connect to the battery cell (200); A flexible circuit board (130) is connected to the printed circuit board (110) in part. The portion of the flexible circuit board (130) connected to the printed circuit board (110) and the conductive element (120) are located on the same side of the printed circuit board (110). The portion of the flexible circuit board (130) connected to the printed circuit board (110) and the portion of the conductive element (120) away from the printed circuit board (110) at least partially overlap.

2. The protective plate according to claim 1, characterized in that, The conductive element (120) includes a first conductive portion (121), a second conductive portion (122), and a third conductive portion (123). The first conductive portion (121) is connected to the printed circuit board (110), the second conductive portion (122) is used to connect to the battery cell (200), and the third conductive portion (123) is connected to the first conductive portion (121) and the second conductive portion (122). The first conductive portion (121) and the second conductive portion (122) at least partially overlap. The portion of the flexible circuit board (130) connected to the printed circuit board (110) at least partially overlaps with the second conductive portion (122).

3. The protective plate according to claim 2, characterized in that, The flexible circuit board (130) includes a first connecting portion (131), a second connecting portion (132), and a third connecting portion (133). The first connecting portion (131) is connected to the side of the printed circuit board (110) facing the conductive element (120). The second connecting portion (132) is located on the side of the printed circuit board (110) away from the conductive element (120). The third connecting portion (133) is connected to the first connecting portion (131) and the second connecting portion (132). The first connecting portion (131) and the second connecting portion (132) overlap at least partially. The second conductive element (122) and the first connecting portion (131) overlap at least partially.

4. The protective plate according to claim 3, characterized in that, The protection board also includes pads. The first connection part (131) is connected to the side of the printed circuit board (110) facing the conductive element (120) through the pads. The second connection part (132) and the printed circuit board (110) are spaced apart from the side of the conductive element (120).

5. The protective plate according to claim 1, characterized in that, The printed circuit board (110) is provided with a plurality of electronic devices (140), each of the electronic devices (140) being located on the side of the printed circuit board (110) facing the conductive element (120).

6. A battery, characterized in that, The device includes a battery cell (200), an injection molded part (300), and a protective plate according to any one of claims 1 to 5, wherein the battery cell (200) is connected to the portion of the conductive element (120) away from the printed circuit board (110), and the injection molded part (300) is connected to the battery cell (200), the conductive element (120), the printed circuit board (110), and the flexible circuit board (130).

7. The battery according to claim 6, characterized in that, The injection molded part (300) includes a first injection body (310) and a second injection body (320) connected to each other. The first injection body (310) is connected to the battery cell (200), the conductive element (120), the printed circuit board (110), and the flexible circuit board (130). A portion of the printed circuit board (110) and the conductive element (120) are located inside the first injection body (310). The second injection body (320) is located on the side of the printed circuit board (110) away from the battery cell (200). The side of the printed circuit board (110) away from the battery cell (200) is exposed outside the first injection body (310).

8. The battery according to claim 6, characterized in that, At least a portion of the printed circuit board (110) is located within the injection molded part (300), and a recess (111) is provided on the outer peripheral side of the printed circuit board (110), at least a portion of the recess (111) being located within the injection molded part (300).

9. The battery according to claim 8, characterized in that, The printed circuit board (110) has a plurality of recesses (111) on its outer periphery, with two adjacent recesses (111) spaced apart.

10. An electronic device, characterized in that, It includes a motherboard and a battery according to any one of claims 6 to 9, wherein the motherboard is connected to the flexible circuit board (130).

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