Battery protection board and electronic equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery protection board and electronic equipment, the battery protection board comprises a soft board and a hard board, the soft board comprises a main board, an auxiliary board and a connecting part, the main board and the auxiliary board are connected through the connecting part, and hollow holes are formed in the connecting part. The connecting part can be bent, so that the main board and the auxiliary board are arranged on the two sides of the hard board in the first direction respectively. According to the battery protection board and the electronic equipment, the main board and the auxiliary board are connected through the connecting part, the heat dissipation area and the current-carrying area of the soft board are effectively expanded, the hollow holes are formed in the connecting part, the bending strength of the connecting part is effectively reduced, bending of the connecting part is facilitated, and the service life of the battery protection board is prolonged. Therefore, the main board and the auxiliary board are respectively arranged on two sides of the hard board in the first direction, and the space occupancy rate of the battery protection board is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery protection board and an electronic device. Background Art

[0002] With the diversification of the functions of portable electronic devices, the requirements for high-power charging / discharging of electronic devices are getting higher and higher. The batteries of today's electronic devices are usually connected to the battery module via a battery protection board (Protection Circuit Module, PCM for short). In order to meet the requirements of high-power charging / discharging of electronic devices, the area of ​​the flexible circuit board of the battery protection board is usually increased to ensure the current-carrying area and heat dissipation area of ​​the flexible circuit part. In order to reduce the space occupied by the flexible circuit board, it is usually necessary to fold the flexible circuit board. However, the bending strength of today's flexible circuit boards is too large and it is not easy to bend and shape. Utility Model Content

[0003] The purpose of the present application is to provide a battery protection board and an electronic device, so as to solve the technical problem in the prior art that the bending strength of the flexible circuit board is too large and it is not easy to bend and shape.

[0004] According to a first aspect of the present application, a battery protection board is provided, comprising a soft board and a hard board, wherein the soft board comprises a main board, a sub-board and a connecting portion, wherein the main board and the sub-board are connected via the connecting portion, and a hollow hole is provided on the connecting portion;

[0005] The connecting portion can be bent so that the main board and the auxiliary board are respectively arranged on two sides of the hard board in the first direction.

[0006] Preferably, both the main board and the sub-board extend along a second direction, and the second direction intersects the first direction;

[0007] There are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the second direction.

[0008] Preferably, a plurality of the hollow holes are provided on the connecting portion, and the plurality of hollow holes are arranged at intervals along a second direction, and the second direction intersects with the first direction.

[0009] Preferably, the soft board further includes a heat dissipation layer, and the heat dissipation layer is laid on a side of the auxiliary board facing away from the hard board.

[0010] Preferably, it further comprises an insulating adhesive layer, wherein the insulating adhesive layer is arranged between the auxiliary board and the hard board.

[0011] Preferably, the hard board further comprises a plastic packaging body, a board body and components, the components are all arranged on a side of the board body facing the sub-board, and at least part of the components are wrapped by the plastic packaging body.

[0012] Preferably, the soft board includes an inner covering film, the inner covering film is attached to a side of the soft board facing the hard board, and the inner covering film is fully distributed on a portion of the soft board except a portion covered by the insulating adhesive layer.

[0013] Preferably, the hard board further comprises a plug interface, the plug interface is arranged on a side of the hard board facing the main board, the main board is provided with a placement notch, and the plug interface can be exposed by the placement notch;

[0014] The flexible board also includes an NTC temperature sensor, and the NTC temperature sensor can be plugged into the plug interface.

[0015] Preferably, the soft board further includes a nickel sheet, which is disposed on a side of the main board facing away from the hard board, and the nickel sheet is electrically connected to the hard board.

[0016] According to the second aspect of the present application, an electronic device is provided, comprising a battery protection board as described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery protection board, which will not be described in detail herein.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] The battery protection board provided in the present application connects the main board and the sub-board through a connecting part, which effectively expands the heat dissipation area and current-carrying area of ​​the soft board, and a hollow hole is arranged on the connecting part, which effectively reduces the bending strength of the connecting part and facilitates the bending of the connecting part, so that the main board and the sub-board are respectively arranged on both sides of the above-mentioned hard board in the first direction, thereby reducing the space occupancy rate of the battery protection board.

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1A schematic diagram of the isometric structure of a battery protection board provided in an embodiment of the present application;

[0022] Figure 2 Another isometric structural diagram of a battery protection board provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the axonometric structure of a flexible board provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the exploded structure of the battery protection plate provided in an embodiment of the present application.

[0025] Reference numerals:

[0026] 11-main board; 12-sub-board; 13-connecting part; 14-hollow hole; 15-plug interface; 16-nickel sheet; 21-board body; 22-plastic sealing body; 3-insulating glue layer; 4-heat dissipation layer; 5-NTC temperature sensor.

[0027] F1-first direction; F2-second direction. DETAILED DESCRIPTION

[0028] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0030] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Refer to the following Figures 1 to 4 A battery protection board and an electronic device according to some embodiments of the present application are described.

[0034] See also Figures 1 to 4 As shown, an embodiment of the first aspect of the present application provides a battery protection board, including a soft board and a hard board, the soft board includes a main board 11, a sub-board 12 and a connecting portion 13, the main board 11 and the sub-board 12 are connected via the connecting portion 13, and a hollow hole 14 is provided on the connecting portion 13. The connecting portion 13 can be bent so that the main board 11 and the sub-board 12 are respectively arranged on both sides of the hard board in the first direction F1.

[0035] According to the battery protection board provided by the above technical features, the main board 11 and the sub-board 12 are connected by the connecting portion 13, which effectively expands the heat dissipation area and current carrying area of ​​the soft board, and a hollow hole 14 is arranged on the connecting portion 13, which effectively reduces the bending strength of the connecting portion 13 and facilitates the bending of the connecting portion 13, so that the main board 11 and the sub-board 12 are respectively arranged on both sides of the above-mentioned hard board in the first direction F1, thereby reducing the space occupancy rate of the battery protection board.

[0036] See also Figures 1 to 4 , F1 in the figure may show an example of the above-mentioned first direction, and F2 in the figure may show an example of the following second direction.

[0037] Preferably, if Figures 1 to 4 As shown, both the main board 11 and the sub-board 12 extend along the second direction F2, and the second direction F2 intersects the first direction F1. Preferably, the first direction F1 and the second direction F2 are perpendicular to each other.

[0038] Preferably, if Figures 1 to 4 As shown, the number of the above-mentioned connecting parts 13 can be two, and the two connecting parts 13 are arranged at both ends of the sub-board 12 at intervals along the second direction F2 to ensure the connection stability between the main board 11 and the sub-board 12, and the two connecting parts 13 are arranged at intervals, which further reduces the bending strength of the connecting part 13 to facilitate the bending of the connecting part 13.

[0039] However, the present invention is not limited thereto. The number and length of the connecting portions 13 may be adaptively adjusted according to the lengths of the main board 11 and the sub-board 12 .

[0040] Preferably, if Figures 1 to 4 As shown, the hollow hole 14 may be a long strip-shaped through hole to adapt to the shape of the connecting portion 13 .

[0041] Preferably, if Figures 1 to 4 As shown, a plurality of hollow holes 14 may be provided on the connecting portion 13 , and the plurality of hollow holes 14 are arranged at intervals along the second direction F2 , so as to further reduce the bending strength of the connecting portion 13 , so as to facilitate the bending of the connecting portion 13 .

[0042] Preferably, if Figures 1 to 4 As shown, the plurality of hollow holes 14 may be evenly distributed along the connecting portion 13 in the second direction F2 to ensure the distribution consistency of the bending strength of the connecting portion 13 .

[0043] Preferably, if Figure 2 and Figure 4 As shown, the soft board may further include a heat dissipation layer 4, and the heat dissipation layer 4 may be disposed on the side of the auxiliary board 12 facing away from the hard board to improve the heat dissipation of the battery protection board.

[0044] Optionally, the heat dissipation layer 4 may be a thermally conductive structural adhesive.

[0045] Preferably, if Figures 1 to 4 As shown, the above-mentioned hard board can also include a plastic package 22, a board body 21 and components. The components are all arranged on the side of the board body 21 facing the sub-board 12, and the components are completely wrapped by the plastic package 22 to ensure the insulation of the hard board.

[0046] Optionally, the plastic package 22 may be epoxy resin.

[0047] Preferably, if Figure 4 As shown, all components on the rigid board can be completely wrapped by a plastic package 22 to ensure the insulation of the rigid board.

[0048] Optionally, not shown in the figures, the hard board may further include a plurality of plastic packaging bodies 22 , and the number of plastic packaging bodies 22 and components may be set in one-to-one correspondence.

[0049] Optionally, not shown in the figures, the hard board may further include a plurality of plastic packaging bodies 22 , and a plurality of components may be enclosed in one plastic packaging body 22 .

[0050] Preferably, if Figure 1 , Figure 2 and Figure 4As shown, the hard board may further include an insertion port 15, which is disposed on the side of the board body 21 facing the main board 11. Correspondingly, a placement notch may be disposed at a position corresponding to the insertion port 15 on the main board 11, and the insertion port 15 may be exposed by the placement notch to facilitate the insertion of the NTC temperature sensor 5 described below.

[0051] Correspondingly, if Figure 1 , Figure 2 and Figure 4 As shown, the flexible board may further include an NTC temperature sensor 5, which can be plugged into the plug interface 15 to monitor the temperature of the battery protection board.

[0052] In an embodiment, preferably, the soft board may include a laminated structure, an inner cover film and an outer cover film. The laminated structure may include a substrate and a conductive layer stacked alternately, the outer cover film is attached to the outer surface of the laminated structure, and the inner cover film is attached to the inner surface of the laminated structure. The inner surface may be the surface of the side of the soft board facing the hard board (i.e., the side of the main board 11 facing the hard board, the side of the sub-board 12 facing the hard board, and the side of the connecting portion 13 facing the hard board).

[0053] Optionally, the conductive layer may be a copper plated layer.

[0054] Preferably, if Figure 2 and Figure 4 As shown, the battery protection board may further include an insulating adhesive layer 3, which is disposed between the auxiliary board 12 and the hard board to connect and fix the auxiliary board 12 and the hard board to prevent the auxiliary board 12 from curling up.

[0055] Optionally, the insulating adhesive layer 3 may be insulating double-sided adhesive, insulating glue, thermally conductive structural adhesive, etc.

[0056] Preferably, the inner covering film is fully distributed on the part of the flexible board except the part covered by the insulating adhesive layer 3. In this way, the insulating adhesive layer 3 can effectively replace the insulating function of the inner covering film, effectively saving the setting space of the inner covering film of the part of the flexible board covered by the insulating adhesive layer 3, thereby saving the size of the battery protection board in the first direction F1. Usually, the thickness of the inner covering film is between 0.01mm and 0.1mm (for example, the thickness of the inner covering film is 0.0625mm). In other words, by setting the inner covering film in the above manner, the thickness of the battery protection board in the first direction F1 can effectively save the space occupied by the inner covering film.

[0057] Preferably, if Figures 1 to 4 As shown, the above-mentioned soft board can also include a nickel sheet 16, which is arranged on the side of the main board 11 facing away from the hard board, and the nickel sheet 16 is electrically connected to the hard board for connecting the battery protection board and the battery module.

[0058] Correspondingly, if Figures 1 to 4 As shown, the number of the nickel sheets 16 can be two, and the two nickel sheets 16 can be spaced apart on the main board 11 along the second direction F2 to be connected to the positive electrode and the negative electrode of the battery module respectively.

[0059] Based on the characteristics described above, Figures 1 to 4 The battery protection board shown is described as an example, and the assembly structure of the battery protection board will be described in detail below.

[0060] The soft board includes a main board, a sub-board and a connecting part, and the main board and the sub-board are bent on both sides of the hard board in the first direction via the connecting part. The components of the hard board are all arranged on the side of the hard board facing the sub-board, and a plastic sealing body is provided on the side of the hard board facing the sub-board for wrapping the components. And an insulating glue layer connecting the hard board and the sub-board is provided between the sub-board and the plastic sealing body, and a heat dissipation layer for improving the heat dissipation efficiency of the battery protection board is provided on the side of the sub-board facing away from the hard board. In other words, in the first direction, the main board, the hard board, the plastic sealing body, the insulating glue layer, the sub-board and the heat dissipation layer are arranged in sequence.

[0061] The embodiment of the second aspect of the present application further provides an electronic device, comprising the battery protection board described in any of the above embodiments, and thus having all the beneficial technical effects of the battery protection board, which will not be described in detail herein.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery protection board, characterized in that: It includes a soft board and a hard board, the soft board includes a main board, a sub-board and a connecting part, the main board and the sub-board are connected via the connecting part, and the connecting part is provided with a hollow hole; The connecting portion can be bent so that the main board and the auxiliary board are respectively arranged on two sides of the hard board in the first direction.

2. The battery protection board according to claim 1, characterized in that: Both the main board and the sub-board extend along a second direction, and the second direction intersects the first direction; There are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the second direction.

3. The battery protection board according to claim 1 or 2, characterized in that: The connecting portion is provided with a plurality of hollow holes, and the plurality of hollow holes are arranged at intervals along a second direction, and the second direction intersects with the first direction.

4. The battery protection board according to claim 1, characterized in that: The soft board also includes a heat dissipation layer, which is laid on a side of the auxiliary board facing away from the hard board.

5. The battery protection board according to claim 1, characterized in that: It also includes an insulating adhesive layer, which is arranged between the auxiliary board and the hard board.

6. The battery protection board according to claim 5, characterized in that: The hard board also includes a plastic packaging body, a board body and components. The components are all arranged on a side of the board body facing the sub-board, and at least part of the components are wrapped by the plastic packaging body.

7. The battery protection board according to claim 5 or 6, characterized in that: The soft board includes an inner covering film, which is attached to a side of the soft board facing the hard board, and the inner covering film is fully distributed on a portion of the soft board except a portion covered by the insulating adhesive layer.

8. The battery protection board according to claim 1, characterized in that: The hard board further includes an insertion port, which is arranged on a side of the hard board facing the main board, and a placement notch is arranged on the main board, and the insertion port can be exposed by the placement notch; The flexible board also includes an NTC temperature sensor, and the NTC temperature sensor can be plugged into the plug interface.

9. The battery protection board according to claim 1, characterized in that: The soft board also includes a nickel sheet, which is arranged on a side of the main board facing away from the hard board, and the nickel sheet is electrically connected to the hard board.

10. An electronic device, characterized in that: A battery protection plate comprising the battery protection plate according to any one of claims 1 to 9.

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