Battery and electronic device

Abstract

The utility model provides a kind of battery and electronic equipment, it is related to battery technical field.The battery includes protection piece, electric core, battery protection plate and heat dissipation adhesive paper, the battery protection plate is connected with the electric core, the protection piece surrounds the battery protection plate, part of the heat dissipation adhesive paper is inserted into the protection piece, and is contacted with the battery protection plate, part of the heat dissipation adhesive paper is exposed outside the protection piece.Because heat dissipation adhesive paper is contacted with battery protection plate, and part of heat dissipation adhesive paper is exposed outside the protection piece, this makes the heat generated by battery protection plate can be conducted to the outside of protection piece through heat dissipation adhesive paper, the temperature rise of component is reduced, the temperature rise of battery protection plate is reduced, thereby reduce the risk of performance decline or damage of not high-temperature-resistant component.

Description

Technical Field

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

[0002] Mobile phones generally use batteries as their power source. A battery typically consists of a battery protection board and battery cells. The battery cells' tabs are connected to the battery protection board, and then injection molding or adhesive tape is applied to protect the components of the battery protection board and prevent the battery cells' tabs from being exposed.

[0003] With the development of mobile phone technology, their functions are becoming increasingly rich, and the requirements for batteries are gradually increasing. The number of components on the battery protection board is also increasing, and some of these components generate a lot of heat during operation. Because the battery protection board is covered by adhesive tape or injection-molded parts, the heat dissipation efficiency of the components is low. When the power is too high, the heat generated by the components cannot be effectively dissipated, causing the component temperature to rise. This localized temperature increase gradually spreads to the entire battery protection board, leading to a decline in the performance or damage to components that are not heat-resistant.

[0004] Currently, there are two solutions to the heat dissipation problem of components. The first is to optimize the layout and circuit design of the printed circuit board, arranging the components separately to dissipate heat through the space between them. The second is to use components with good heat dissipation performance. However, although both methods can achieve a certain degree of heat dissipation, the battery protection board is still covered by adhesive tape or injection molded parts, and the heat dissipation effect of the components is still relatively poor. Utility Model Content

[0005] In view of this, this application provides a battery and electronic device to solve the problem that the heat dissipation effect of the components is still poor even when the battery protection board is covered with adhesive paper or injection molded parts.

[0006] According to one aspect of this application, a battery is provided, the battery including a protective component, a battery cell, a battery protection board and a heat-dissipating adhesive paper, the battery protection board being connected to the battery cell, the protective component surrounding the battery protection board, a portion of the heat-dissipating adhesive paper extending into the protective component and contacting the battery protection board, and a portion of the heat-dissipating adhesive paper being exposed on the outside of the protective component.

[0007] Preferably, the battery protection board includes a printed circuit board and components, the components are disposed on the printed circuit board, and the thermal adhesive paper is in contact with the printed circuit board.

[0008] Preferably, the battery cell includes a bonding surface on one side in the thickness direction of the battery cell, and a portion of the heat dissipation adhesive paper is bonded to the bonding surface.

[0009] Preferably, the printed circuit board is parallel to the length direction of the battery cell;

[0010] The protective component includes multiple insulating tapes that cover the printed circuit board.

[0011] Preferably, the protective component is an injection molded part, which is connected to the battery cell, the printed circuit board is covered by the injection molded part, and a portion of the heat dissipation paper is covered by the injection molded part.

[0012] Preferably, the battery cell includes a tab, the tab being connected to the printed circuit board, and the printed circuit board being perpendicular to the length direction of the battery cell;

[0013] The heat dissipation adhesive paper includes a first heat dissipation part and a second heat dissipation part. The first heat dissipation part is in contact with the printed circuit board, and the part of the electrode tab connected to the printed circuit board is in contact with the second heat dissipation part.

[0014] Preferably, the heat dissipation adhesive paper is boron nitride adhesive paper or graphite adhesive paper.

[0015] According to another aspect of this application, an electronic device is provided, the electronic device comprising the battery described above.

[0016] Preferably, the electronic device includes a housing and a cover plate, the housing forming a battery compartment, the battery being disposed within the battery compartment, the cover plate covering the housing, and the heat-dissipating adhesive paper facing the cover plate.

[0017] Preferably, the electronic device further includes a heat sink, which is connected to the side of the cover plate facing the housing, and the heat sink is bonded to the heat-dissipating adhesive paper.

[0018] The battery of this application includes a protective component, a battery cell, a battery protection board, and thermal adhesive paper. The battery protection board is connected to the battery cell, and the protective component surrounds the battery protection board. A portion of the thermal adhesive paper extends into the protective component and contacts the battery protection board, while a portion of the thermal adhesive paper is exposed on the outside of the protective component. Because the thermal adhesive paper contacts the battery protection board and is partially exposed, the heat generated by the battery protection board can be conducted to the outside of the protective component via the thermal adhesive paper. This reduces the temperature rise of the components and the battery protection board, thereby reducing the risk of performance degradation or damage to components that are not resistant to high temperatures. Attached Figure Description

[0019] 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.

[0020] Figure 1 A three-dimensional schematic diagram of the battery of Embodiment 1 is shown;

[0021] Figure 2 An exploded view of the battery of Embodiment 1 is shown;

[0022] Figure 3 A schematic diagram of the battery cell in Embodiment 1 is shown;

[0023] Figure 4 This diagram shows the relative positions of the battery cell and the thermal adhesive paper in the battery of Embodiment 1 from a certain perspective.

[0024] Figure 5 This diagram shows the relative positions of the battery cell and the thermal adhesive paper in the battery of Embodiment 1 from another perspective.

[0025] Figure 6 A three-dimensional schematic diagram of the battery of Embodiment 2 is shown;

[0026] Figure 7 This shows a schematic diagram of the battery cell structure in Example 2;

[0027] Figure 8 The diagram shows the relative positions of the battery protection board, battery cell, and thermal adhesive paper in the battery of Embodiment 2.

[0028] Figure 9 The diagram shows the relative positions of the battery cells and the thermal adhesive paper in the battery of Example 2;

[0029] Figure 10 Show Figure 9 Enlarged view of section A;

[0030] Figure 11 An exploded view of the electronic device is shown.

[0031] Icons: 1-Battery cell; 11-Taper; 12-Encapsulation film; 121-Top seal; 122-Side seal; 123-Encapsulation body; 2-Battery protection board; 21-Printed circuit board; 22-Flexible circuit board; 23-Components; 24-Connector; 25-Nickel sheet; 3-Heat dissipation adhesive paper; 31-First heat dissipation part; 32-Second heat dissipation part; 33-Through opening; 4-Insulating adhesive paper; 5-Injection molded part; 6-Easy-tear adhesive; 7-Tail adhesive paper; 8-Housing; 81-Battery compartment; 9-Cover plate; S1-Adhesive surface; S2-Fit surface; L1-Length direction; L2-Width direction; L3-Thickness direction. Detailed Implementation

[0032] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0033] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0034] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0035] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0036] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0037] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0038] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0039] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0040] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0041] According to one aspect of this application, a battery is provided, such as Figures 1 to 10As shown, the battery includes a protective component, a battery cell 1, a battery protection board 2, and thermally conductive adhesive paper 3. The battery protection board 2 is connected to the battery cell 1, and the protective component surrounds the battery protection board 2. Part of the thermally conductive adhesive paper 3 extends into the protective component and contacts the battery protection board 2, while a portion of the thermally conductive adhesive paper 3 is exposed on the outside of the protective component. Because the thermally conductive adhesive paper 3 is in contact with the battery protection board 2, and a portion of the thermally conductive adhesive paper 3 is exposed on the outside of the protective component, the heat generated by the battery protection board 2 can be conducted to the outside of the protective component through the thermally conductive adhesive paper 3. This reduces the temperature rise of the components 23 and the battery protection board 2, thereby reducing the risk of performance degradation or damage to the heat-sensitive components 23.

[0042] Furthermore, such as Figure 3 , Figure 4 and Figure 8 As shown, the battery protection board 2 includes a flexible circuit board 22, a printed circuit board 21, and components 23. The flexible circuit board 22 is connected to the printed circuit board 21, the components 23 are disposed on the printed circuit board 21, and the heat dissipation paper 3 is in contact with the printed circuit board 21 so that the heat generated by the components 23 on the printed circuit board 21 can be transferred to the heat dissipation paper 3 through the printed circuit board 21, thereby conducting the heat to the outside of the protection component, so as to reduce the temperature rise of the battery protection board 2 and the components 23.

[0043] It should be noted that, Figure 8 The connector 24 and component 23 are respectively shielded by the flexible circuit board 22 and the printed circuit board 21, therefore... Figure 8 Connector 24 and component 23 are not marked.

[0044] like Figure 3 and Figure 7 As shown, the battery cell 1 includes an encapsulation film 12, tabs 11, and electrode groups. The encapsulation film 12 encapsulates the electrode groups and is divided into a connected encapsulation body 123, a top sealing edge 121, and two side sealing edges 122. The electrode groups are located inside the encapsulation body 123, and the tabs 11 are connected to the electrode groups. Parts of the tabs 11 extend through the top sealing edge 121, and the two side sealing edges 122 are located on both sides of the top sealing edge 121 in the width direction L2. The encapsulation body 123 of the battery cell 1 includes an adhesive surface S1 and a bonding surface S2. The adhesive surface S1 is the surface of the encapsulation body 123 located on the same side as the top sealing edge 121 in the length direction L1, and the bonding surface S2 is the surface located on one side in the thickness direction L3 of the battery cell 1. Part of the thermal adhesive paper 3 is bonded to the bonding surface S2. When the battery is installed in the battery compartment 81, the bonding surface S2 faces the cover plate 9 of the electronic device, and part of the heat dissipation paper 3 is bonded to the bonding surface S2, which facilitates the conduction of heat to the outside of the electronic device through the cover plate 9.

[0045] like Figure 1 , Figure 2 and Figure 6As shown, the battery also includes a tail adhesive tape 7 and an easy-tear sticker 6. The easy-tear sticker 6 is bonded to the battery cell 1, and part of the bonding surface S2 is exposed to the outside of the battery cell 1. The tail adhesive tape 7 is bonded to the tail of the battery cell 1.

[0046] Optionally, the battery protection board 2 can be covered with insulating tape 4 or injection molded part 5. The two different forms will be described below in conjunction with Embodiment 1 and Embodiment 2.

[0047] Example 1

[0048] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, the top sealing edge 121 is kept parallel to the length direction L1 of the battery cell 1, the first part of the heat dissipation adhesive paper 3 is bonded to the bonding surface S1, the second part of the heat dissipation adhesive paper 3 is bonded to the bonding surface S2, the printed circuit board 21 is parallel to the length direction L1 of the battery cell 1, and the first part of the heat dissipation adhesive paper 3 is in contact with the printed circuit board 21.

[0049] Furthermore, the protective component includes multiple insulating tapes 4, which surround the battery protection board 2, thereby covering the printed circuit board 21 to protect the printed circuit board 21, components 23, the connection between the printed circuit board 21 and the tab 11, and the connection between the printed circuit board 21 and the flexible circuit board 22.

[0050] Preferably, such as Figure 2 As shown, there are three insulating tapes 4. The first insulating tape 4 is bonded to the top sealing edge 121. The second insulating tape 4 has a "┌┐" shaped cross-section and is bonded to both the first insulating tape 4 and the side of the battery protection board 2 facing away from the top sealing edge 121. The third insulating tape 4 is bonded to one side of the second insulating tape 4 in the thickness direction L3, and both ends of the third insulating tape 4 extend to the other side of the second insulating tape 4 in the thickness direction L3 and are bonded to the other side of the second insulating tape 4 in the thickness direction L3. The printed circuit board 21, components 23, the connection between the printed circuit board 21 and the tab 11, and the connection between the printed circuit board 21 and the flexible circuit board 22 are covered by the three insulating tapes 4. Part of the flexible circuit board 22 is exposed outside the multiple insulating tapes 4. A connector 24 is provided on the part of the flexible circuit board 22 exposed outside the multiple insulating tapes 4 so that the battery protection board 2 can be connected to the outside through the connector 24.

[0051] Optionally, the battery may also include foam, with one side of the foam bonded to a first portion of the thermally insulating paper 3 and the other side of the foam bonded to the bonding surface S1. The foam acts as a buffer to cushion the impact of the battery protection board 2 on the battery cell 1.

[0052] Example 2

[0053] In this embodiment, as Figures 6 to 10 As shown, the protective component is injection molded part 5, which is connected to the battery cell 1, and the printed circuit board 21 is covered by injection molded part 5.

[0054] like Figure 7 and Figure 8 As shown, the top sealing edge 121 is bent, the printed circuit board 21 is perpendicular to the length direction L1 of the battery cell 1, and the heat dissipation adhesive paper 3 is bonded to the top sealing edge 121, the bonding surface S1 and the mating surface S2 respectively.

[0055] like Figure 8 , Figure 9 and Figure 10 As shown, the heat dissipation adhesive paper 3 includes a first heat dissipation part 31. A first portion of the first heat dissipation part 31 is bonded to the top sealing edge 121 and the adhesive surface S1, respectively. A second portion of the first heat dissipation part 31 is bonded to the bonding surface S2. Two through-holes 33 are formed on the first portion of the first heat dissipation part 31, and two tabs 11 pass through the two through-holes 33 respectively, thereby being soldered to the nickel sheet 25 on the printed circuit board 21 located above the heat dissipation adhesive paper 3. The first portion of the first heat dissipation part 31 is in contact with the printed circuit board 21, and is covered by the injection molded part 5. The second portion of the first heat dissipation part 31 is exposed outside the injection molded part 5. A portion of the flexible circuit board 22 is located inside the injection molded part 5, and another portion is exposed outside the injection molded part 5. A connector 24 is provided on the portion of the flexible circuit board 22 exposed outside the injection molded part 5, so that the battery protection board 2 can be connected to the outside through the connector 24.

[0056] Optionally, the heat dissipation adhesive paper 3 further includes two second heat dissipation portions 32, which are respectively bonded to the side of the two tabs 11 opposite to the two nickel sheets 25. This allows the heat at the connection between the nickel sheets 25 and the tabs 11 to be quickly conducted to the battery protection board 2. Preferably, the two second heat dissipation portions 32 and the first heat dissipation portion 31 are integrally formed.

[0057] It should be noted that, although Figure 8 The printed circuit board 21 shown in the figure has a certain gap with the first heat dissipation part 31. However, when the head of the battery cell 1 is injection molded, the injection molding equipment will apply force to the battery protection board 2, so that the printed circuit board 21 contacts the first heat dissipation part 31, thereby ensuring that heat can be conducted to the heat dissipation adhesive paper 3.

[0058] Alternatively, the heat dissipation paper 3 may only include the first heat dissipation part 31. In this case, when the head of the cell 1 is injection molded, the injection molding equipment will apply force to the battery protection board 2, so that the printed circuit board 21 and the connection between the tab 11 and the nickel sheet 25 come into contact with the first heat dissipation part 31.

[0059] In the above-described Embodiment 1 and Embodiment 2, the heat dissipation adhesive paper 3 can be boron nitride adhesive paper or graphite adhesive paper, which has good thermal conductivity to improve heat dissipation efficiency.

[0060] According to another aspect of this application, an electronic device is provided, which includes the battery described above.

[0061] Alternatively, the electronic device may use the battery described in Embodiment 1 or Embodiment 2 above.

[0062] Furthermore, such as Figure 11 As shown, the electronic device includes a housing 8 and a cover plate 9. The housing 8 forms a battery compartment 81, and the battery is disposed inside the battery compartment 81. A heat sink is disposed on the cover plate 9, which covers the housing 8. The heat dissipation paper 3 faces the cover plate 9 so that the heat conducted to the heat dissipation paper 3 can be transferred to the outside of the electronic device through the cover plate 9.

[0063] In addition, the electronic device also includes a heat sink, which is connected to the cover plate 9 and adhered to the heat-dissipating adhesive paper 3. Thus, by providing a heat sink, heat can be quickly transferred to the cover plate 9, and subsequently to the outside of the electronic device.

[0064] Alternatively, the heat sink can be a sheet-like structure made of materials such as copper or silver.

[0065] Alternatively, the electronic device can be a mobile phone, tablet computer, etc.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery, characterized in that, The battery includes a protective component, a battery cell, a battery protection board, and a heat-dissipating adhesive paper. The battery protection board is connected to the battery cell. The protective component surrounds the battery protection board. A portion of the heat-dissipating adhesive paper extends into the protective component and contacts the battery protection board. A portion of the heat-dissipating adhesive paper is exposed on the outside of the protective component.

2. The battery according to claim 1, characterized in that, The battery protection board includes a printed circuit board and components. The components are disposed on the printed circuit board, and the thermal adhesive paper is in contact with the printed circuit board.

3. The battery according to claim 1, characterized in that, The battery cell includes a bonding surface on one side in the thickness direction of the battery cell, and a portion of the heat dissipation adhesive paper is bonded to the bonding surface.

4. The battery according to claim 2, characterized in that, The printed circuit board is parallel to the length direction of the battery cell; The protective component includes multiple insulating tapes that cover the printed circuit board.

5. The battery according to claim 2, characterized in that, The protective component is an injection molded part, which is connected to the battery cell. The printed circuit board is covered by the injection molded part, and a portion of the heat dissipation paper is covered by the injection molded part.

6. The battery according to claim 5, characterized in that, The battery cell includes a tab, which is connected to the printed circuit board, and the printed circuit board is perpendicular to the length direction of the battery cell. The heat dissipation adhesive paper includes a first heat dissipation part and a second heat dissipation part. The first heat dissipation part is in contact with the printed circuit board, and the part of the electrode tab connected to the printed circuit board is in contact with the second heat dissipation part.

7. The battery according to any one of claims 1-6, characterized in that, The heat dissipation adhesive paper is boron nitride adhesive paper or graphite adhesive paper.

8. An electronic device, characterized in that, The electronic device includes the battery according to any one of claims 1-7.

9. The electronic device according to claim 8, characterized in that, The electronic device includes a housing and a cover plate. The housing forms a battery compartment, and the battery is disposed in the battery compartment. The cover plate covers the housing, and the heat-dissipating adhesive paper faces the cover plate.

10. The electronic device according to claim 9, characterized in that, The electronic device also includes a heat sink, which is connected to the side of the cover plate facing the housing, and the heat sink is attached to the heat-dissipating adhesive paper.

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