CN220043763U - Electronic equipment - Google Patents

Abstract

The utility model discloses an electronic device, comprising: a first circuit board, one side of which is provided with a first connection terminal; the second circuit board is parallel to the first circuit board and is arranged at intervals, and a second connecting terminal is arranged on one side of the second circuit board; the battery protection board is arranged between the first circuit board and the second circuit board, a third connecting terminal is arranged at the first end of the battery protection board, a fourth connecting terminal is arranged at the second end of the battery protection board, the third connecting terminal is electrically connected with the first connecting terminal, and the fourth connecting terminal is electrically connected with the second connecting terminal. According to the utility model, the FPC and the BTB can be avoided, so that the charging path is shortened, and the cost is saved.

Description

Electronic equipment

Technical Field

The utility model belongs to the technical field of electronic equipment, and particularly relates to electronic equipment.

Background

As intelligent electronic devices become more popular, the requirements for the internal space and battery capacity of the electronic devices are also becoming more stringent. In the related art, an internal structure of an electronic device generally adopts three-section type, and is composed of a main Board, a battery and an auxiliary Board, a battery protection Board is arranged between the battery and the main Board, the battery protection Board is connected with the main Board through a flexible circuit Board (Flexible Printed Circuit, FPC), and PFCs are respectively buckled and connected with the main Board and the auxiliary Board through Board-to-Board connectors (BTB).

In carrying out the present utility model, the applicant has found that at least the following problems exist in the prior art: the battery protection board passes through FPC lock BTB and switches to on the mainboard, and the charging path includes: the motherboard-FPC-BTB-FPC-battery protection board causes the charging path to be too long.

Disclosure of Invention

The utility model aims to provide electronic equipment, which at least solves one of the problems of overlong charging path and higher cost in the prior art.

In order to solve the technical problems, the utility model is realized as follows:

an embodiment of the present utility model provides an electronic device, including:

a first circuit board, one side of which is provided with a first connection terminal;

the second circuit board is parallel to the first circuit board and is arranged at intervals, and a second connecting terminal is arranged on one side of the second circuit board;

the battery protection board is arranged between the first circuit board and the second circuit board, a third connecting terminal is arranged at the first end of the battery protection board, a fourth connecting terminal is arranged at the second end of the battery protection board, the third connecting terminal is electrically connected with the first connecting terminal, and the fourth connecting terminal is electrically connected with the second connecting terminal.

In an embodiment of the utility model, a first connection terminal is arranged on one side of the first circuit board, a second connection terminal is arranged on one side of the second circuit board, the battery protection board is arranged between the first circuit board and the second circuit board, and a third connection terminal and a fourth connection terminal are respectively arranged at two ends of the battery protection board; the third connecting terminal is electrically connected with the first connecting terminal, the fourth connecting terminal is electrically connected with the second connecting terminal, conduction between the first circuit board and the second circuit board and conduction between the first circuit board and the battery protection board can be achieved, FPC and BTB can be prevented from being arranged, and therefore charging current can be directly transmitted from the first circuit board to the battery protection board, and further a charging path can be shortened, and cost is saved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic diagram of an internal structure of an electronic device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of another electronic device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the internal structure of a further electronic device in an embodiment of the utility model;

fig. 4 is a schematic view showing a connection structure between a battery protection board and a first circuit board in an embodiment of the present utility model;

fig. 5 is a schematic structural view of a first circuit board with a first connection terminal plated on one side thereof;

fig. 6 is a schematic view of a battery protection plate in an embodiment of the present utility model.

Reference numerals:

1-first circuit board, 11-first connecting terminal, 111-nickel layer, 112-gold layer, 13-copper layer, 2-second circuit board, 3-battery protection board, 31-third connecting terminal, 311-first pin, 312-second pin, 313-third pin, 32-fourth connecting terminal, 321-fourth pin, 322-fifth pin, 4-battery.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

An electronic device according to an embodiment of the present utility model is described below with reference to fig. 1 to 6.

As shown in fig. 1, in some embodiments of the present utility model, the electronic device may specifically include a first circuit board 1, where a first connection terminal 11 is disposed on one side of the first circuit board 1; the second circuit board 2 is parallel to the first circuit board 1 and is arranged at intervals, and one side of the second circuit board 2 can be provided with a second connecting terminal; the battery protection board 3 may be disposed between the first circuit board 1 and the second circuit board 2, may be used to protect the battery 4 or perform a conductive function, the first end of the battery protection board 3 may be provided with the third connection terminal 31, the second end of the battery protection board 3 may be provided with the fourth connection terminal 32, the third connection terminal 31 may be electrically connected with the first connection terminal 11, and the fourth connection terminal 32 may be electrically connected with the second connection terminal.

In the embodiment of the present utility model, a first connection terminal 11 is disposed on one side of the first circuit board 1, a second connection terminal is disposed on one side of the second circuit board 2, the battery protection board 3 is disposed between the first circuit board 1 and the second circuit board 2, and both ends of the battery protection board 3 are respectively provided with a third connection terminal 31 and a fourth connection terminal 32; the third connection terminal 31 is electrically connected to the first connection terminal 11, and the fourth connection terminal 32 is electrically connected to the second connection terminal, so that conduction between the first circuit board 1 and the second circuit board 2 and conduction between the first circuit board 1 and the battery protection board 3 can be realized, an FPC and a BTB can be avoided, a charging path can be shortened, cost can be saved, and wiring space occupied by the FPC and the BTB on the first circuit board 1 and the second circuit board 2 can be reduced; moreover, the FPC itself can be prevented from occupying a space in the stacking thickness direction and increasing the cost, and the connection manner of the battery protection plate 3 can be simplified.

The electronic device in the embodiment of the utility model comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an intelligent wearable device and the like.

Specifically, the first circuit board 1 may be a main board of the electronic device, that is, a circuit board disposed inside the electronic device, or may be called a printed circuit board (Printed Circuit Board, PCB), where the first circuit board 1 may provide a combined carrier or platform for all DIY hardware, may integrate components such as a processor, a memory, a flash memory, a camera, a card slot, and various sensors, and may implement processing of internal and external signals and all function controls of the electronic device, including display, charging, on/off, and function applications.

Specifically, the second circuit board 2 may be a sub-board of the electronic device, specifically may be a circuit board that is disposed inside the electronic device, that is, a printed circuit board, and may be used to take charge of power management and communication signal transmission of the electronic device, and installation and connection of part of keys and key lamps.

Specifically, the battery protection board 3 may be an integrated circuit board that performs protection for rechargeable battery, and in this embodiment of the present utility model, the battery protection board 3 may perform protection for the battery 4 of the electronic device, so as to avoid overcharging, overdischarging, overcurrent, short-circuit, and ultra-high temperature charging and discharging of the battery 4.

Specifically, as shown in fig. 1, 2 and 3, the first circuit board 1 and the second circuit board 2 are arranged in parallel and at an interval such that a gap is provided between the first circuit board 1 and the second circuit board 2; the battery protection plate 3 may be disposed in the gap, and one end of the battery protection plate 3, which is close to the first circuit board 1, is a first end, and one end of the battery protection plate 3, which is close to the second circuit board 2, is a second end.

Specifically, a side of the first circuit board 1 facing the second circuit board 2 is provided with a first connection terminal 11, a side of the second circuit board 2 facing the first circuit board 1 is provided with a second connection terminal, a first end of the battery protection board 3 is provided with a third connection terminal 31, and a second end of the battery protection board 3 may be provided with a fourth connection terminal 32; the third connection terminal 31 and the first connection terminal 11 may be disposed correspondingly and electrically connected, and the fourth connection terminal 32 and the second connection terminal may be disposed correspondingly and electrically connected, so that conduction between the first circuit board 1 and the second circuit board 2 may be performed through the battery protection board 3.

Specifically, the first connection terminal 11 may be integrated on the first circuit board 1 and be integrally structured with the first circuit board 1. The second connection terminal may be integrated on the second circuit board 2 and be integrally formed with the second circuit board 2. The third connection terminal 31 and the fourth connection terminal 32 are integrated on the battery protection plate 3 and are integrally structured with the battery protection plate 3.

Alternatively, the third connection terminal 31 is opposite to and abuts against the first connection terminal 11; the fourth connection terminal 32 and the second connection terminal face each other and abut against each other.

In the embodiment of the present utility model, the third connection terminal 31 is opposite to and abuts against the first connection terminal 11, so that the battery protection board 3 and the first circuit board 1 can be directly contacted; the fourth connection terminal 32 and the second connection terminal are opposite and abutted, so that the battery protection board 3 and the second circuit board 2 can be directly contacted, the wiring area and the space on the first circuit board 1 and the second circuit board 2 can be saved, the charging path of the battery 4 can be shortened, and the connection mode of the battery protection board 3 can be simplified.

In other alternative embodiments of the present utility model, as shown in fig. 3 and 4, a side of the first circuit board 1 facing the battery protection plate 3 may be provided with a first groove, the first connection terminal 11 may be disposed in the first groove, the third connection terminal 31 may protrude from the first end of the battery protection plate 3, and at least a portion of the third connection terminal 31 may be embedded in the first groove.

In the embodiment of the present utility model, the first connection terminal 11 is disposed in the first groove, and at least part of the third connection terminal 31 is embedded in the first groove, so as to facilitate the electrical connection between the third connection terminal 31 and the first connection terminal 11; furthermore, the first groove can play a limiting role on the third connection terminal 31, and the reliability of the relative fixation between the third connection terminal 31 and the first connection terminal 11 can be improved.

Alternatively, as shown in fig. 5, the bottom of the first groove is provided with a bare copper layer 13, and the first connection terminal 11 may include a nickel layer 111 and a gold layer 112 sequentially provided on the copper layer 13; the gold layer 112 may be electrically connected to the third connection terminal 31.

In the embodiment of the present utility model, the nickel layer 111 and the gold layer 112 are sequentially disposed on the copper layer 13, so that the first connection terminal 11 and the first circuit board 1 form an integrated structure.

Specifically, the first connection terminal 11 may be disposed on one side of the first circuit board 1 through a side plating process, the first connection terminal 11 includes a nickel layer 111 and a gold layer 112 sequentially disposed on the copper layer 13, and the corresponding third connection terminal 31 may be a metal sheet, so that electrical connection between the third connection terminal 31 and the first connection terminal 11 may be achieved in the case that the third connection terminal 31 abuts against the gold layer 112.

Specifically, the nickel layer 111 and the gold layer 112 may be sequentially formed on the copper layer 13 by deposition.

Optionally, the cross-sectional shape of the first groove along a direction perpendicular to the axis thereof includes: at least one of circular, elliptical and square, so as to improve structural diversity of the first groove.

Specifically, the cross-sectional shape of the first groove in the direction perpendicular to the axis thereof may be any one of a circle, an ellipse, and a square, or a combination of at least two thereof.

For example, a groove can be mechanically drilled on one side of the first circuit board 1 at present to control the actual requirements of the radius of the groove opening to be 1mm,2mm,3mm and the like, a groove is electroplated and gong Kong Chengdi according to the normal manufacturing process, and finally nickel and gold are deposited at the bottom of the first groove.

Alternatively, a side of the second circuit board 2 facing the battery protection board 3 may be provided with a second groove, the second connection terminal may be disposed in the second groove, the fourth connection terminal 32 may protrude from the second end of the battery protection board 3, and at least part of the fourth connection terminal 32 may be embedded in the second groove.

In the embodiment of the utility model, the second connection terminal is arranged in the second groove, and at least part of the fourth connection terminal 32 is embedded in the second groove, so that the electrical connection between the fourth connection terminal 32 and the second connection terminal is realized; moreover, the second groove can play a limiting role on the fourth connection terminal 32, and the reliability of the relative fixation between the fourth connection terminal 32 and the second connection terminal can be improved.

Specifically, the bottom of the second groove may be provided with a bare copper layer 13, and the second connection terminal may include a nickel layer 111 and a gold layer 112 sequentially provided on the copper layer 13; the gold layer 112 in the second connection terminal may be electrically connected with the fourth connection terminal 32 in order to realize that the second connection terminal and the second circuit board 2 form a unitary structure.

Specifically, the second connection terminal may be disposed on one side of the second circuit board 2 through a side plating process, the second connection terminal includes a nickel layer 111 and a gold layer 112 sequentially disposed on the copper layer 13, and the corresponding fourth connection terminal 32 may be a metal sheet, so that electrical connection between the fourth connection terminal 32 and the second connection terminal may be achieved in a case where the fourth connection terminal 32 abuts against the gold layer 112 in the second connection terminal.

Optionally, the cross-sectional shape of the second groove along a direction perpendicular to the axis thereof includes: at least one of circular, elliptical and square, in order to improve structural diversity of the second groove.

Specifically, the cross-sectional shape of the second groove in the direction perpendicular to the axis thereof may be any one of a circle, an ellipse, and a square, or a combination of at least two thereof.

Alternatively, the first end of the battery protection plate 3 may be provided with a third groove, the third connection terminal 31 may be disposed in the third groove, and the first connection terminal 11 may protrude from a side of the first circuit board 1 facing the battery protection plate 3, and at least a portion of the first connection terminal 11 is embedded in the third groove.

In the embodiment of the present utility model, the third connection terminal 31 is disposed in the third groove, and at least part of the first connection terminal 11 is embedded in the third groove, so as to facilitate the electrical connection between the third connection terminal 31 and the first connection terminal 11; furthermore, the third groove can play a limiting role on the first connection terminal 11, and the reliability of the relative fixation between the third connection terminal 31 and the first connection terminal 11 can be improved.

Specifically, the bottom of the third groove may be provided with a bare copper layer 13, and the third connection terminal 31 may include a nickel layer 111 and a gold layer 112 sequentially provided on the copper layer 13; the gold layer 112 in the third connection terminal 31 may be electrically connected with the first connection terminal 11 so as to realize that the third connection terminal 31 and the battery protection plate 3 form an integral structure.

Specifically, the third connection terminal 31 may be disposed at the first end of the battery protection plate 3 through a side plating process, the third connection terminal 31 includes a nickel layer 111 and a gold layer 112 sequentially disposed on the copper layer 13, and the corresponding first connection terminal 11 may be a metal sheet, so that electrical connection between the third connection terminal 31 and the first connection terminal 11 may be achieved in the case where the first connection terminal 11 abuts against the gold layer 112 in the third connection terminal 31.

Optionally, the cross-sectional shape of the third groove along a direction perpendicular to the axis thereof includes: at least one of circular, elliptical and square, so as to improve structural diversity of the third groove.

Specifically, the cross-sectional shape of the third groove in the direction perpendicular to the axis thereof may be any one of a circle, an ellipse, and a square, or a combination of at least two thereof.

Alternatively, the second end of the battery protection plate 3 may be provided with a fourth groove, the fourth connection terminal 32 may be disposed in the fourth groove, the second connection terminal may protrude from the side of the second circuit board 2 facing the battery protection plate 3, and at least part of the second connection terminal may be embedded in the fourth groove.

In the embodiment of the utility model, the fourth connection terminal 32 is arranged in the fourth groove, and at least part of the second connection terminal is embedded in the fourth groove, so that the electrical connection between the fourth connection terminal 32 and the second connection terminal is realized; moreover, the fourth groove can play a limiting role on the second connection terminal, and the reliability of the relative fixation between the fourth connection terminal 32 and the second connection terminal can be improved.

Specifically, the bottom of the fourth groove may be provided with a bare copper layer 13, and the fourth connection terminal 32 may include a nickel layer 111 and a gold layer 112 sequentially provided on the copper layer 13; the gold layer 112 in the fourth connection terminal 32 may be electrically connected to the second connection terminal so as to realize that the fourth connection terminal 32 and the battery protection plate 3 form an integral structure.

Specifically, the fourth connection terminal 32 may be disposed at the second end of the battery protection plate 3 through a side plating process, the fourth connection terminal 32 includes a nickel layer 111 and a gold layer 112 sequentially disposed on the copper layer 13, and the corresponding second connection terminal may be a metal sheet so that electrical connection between the second connection terminal and the fourth connection terminal 32 may be achieved in the case where the second connection terminal abuts against the gold layer 112 in the fourth connection terminal 32.

Optionally, the cross-sectional shape of the fourth groove along a direction perpendicular to the axis thereof includes: at least one of circular, elliptical and square, so as to improve structural diversity of the fourth groove.

Specifically, the cross-sectional shape of the fourth groove in the direction perpendicular to the axis thereof may be any one of a circle, an ellipse, and a square, or a combination of at least two thereof.

Alternatively, at least part of the first connection terminal 11 protrudes from a side of the first circuit board 1 facing the battery protection board 3, and at least part of the third connection terminal 31 protrudes from a first end of the battery protection board 3, so that the third connection terminal 31 and the first connection terminal 11 are brought into contact and electrically connected.

Alternatively, at least part of the second connection terminal may protrude from a side of the second circuit board 2 facing the battery protection board 3, and at least part of the fourth connection terminal 32 may protrude from the second end of the battery protection board 3, so that the fourth connection terminal 32 and the second connection terminal are brought into contact and electrically connected.

Specifically, in the case where at least part of the first connection terminal 11 is embedded in the third groove, at least part of the second connection terminal may be embedded in the fourth groove; alternatively, at least part of the fourth connection terminal 32 is embedded in the second groove; alternatively, at least part of the second connection terminal protrudes from the side of the second circuit board 2 facing the battery protection board 3, and at least part of the fourth connection terminal 32 protrudes from the second end of the battery protection board 3.

Specifically, in the case where at least part of the third connection terminal 31 is embedded in the first groove, at least part of the second connection terminal may be embedded in the fourth groove; alternatively, at least part of the fourth connection terminal 32 is embedded in the second groove; alternatively, at least part of the second connection terminal protrudes from the side of the second circuit board 2 facing the battery protection board 3, and at least part of the fourth connection terminal 32 protrudes from the second end of the battery protection board 3.

Specifically, in the case where at least part of the first connection terminal 11 protrudes from the side of the first circuit board 1 facing the battery protection board 3 and at the same time at least part of the third connection terminal 31 protrudes from the first end of the battery protection board 3, at least part of the second connection terminal may be embedded in the fourth groove; alternatively, at least part of the fourth connection terminal 32 is embedded in the second groove; alternatively, at least part of the second connection terminal protrudes from the side of the second circuit board 2 facing the battery protection board 3, and at least part of the fourth connection terminal 32 protrudes from the second end of the battery protection board 3.

In further alternative embodiments of the present utility model, the first connection terminal 11 may include a first connection interface, a first display screen adhesive interface, and a charging interface that are disposed at intervals, the second connection terminal may include a second connection interface and a second display screen transfer interface that are disposed at intervals, as shown in fig. 6, the third connection terminal 31 may include a first pin 311, a second pin 312, and a third pin 313 that are disposed at intervals, and the fourth connection terminal 32 includes a fourth pin 321 and a fifth pin 322 that are disposed at intervals; the first pin 311 and the fourth pin 321 are oppositely arranged, the first pin 311 is electrically connected with the first connection interface, and the fourth pin 321 is electrically connected with the second connection interface; the second pin 312 and the fifth pin 322 are oppositely arranged, the second pin 312 is electrically connected with the first display screen switching interface, and the fifth pin 322 is electrically connected with the second display screen switching interface; the third pin 313 is electrically connected to the charging interface.

In the embodiment of the present utility model, the first pin 311 is electrically connected to the first connection interface, and the fourth pin 321 is electrically connected to the second connection interface, so that conduction between the first circuit board 1 and the second circuit board 2 can be achieved. The second pin 312 is electrically connected with the first display screen switching interface, and the fifth pin 322 is electrically connected with the second display screen switching interface, so that a display screen switching function can be realized. The third pin 313 is electrically connected to the charging interface, and can realize the charging function of the battery protection plate 3.

Specifically, the interface in the first connection terminal 11 and the pin in the third connection terminal 31 are correspondingly disposed, the interface in the second connection terminal and the pin in the fourth connection terminal 32 are correspondingly disposed, and other functional connection of the main board and the auxiliary board may be implemented, which is not particularly limited in the embodiment of the present utility model.

Alternatively, the battery protection plate 3 may be disposed perpendicular to the first circuit board 1.

In the embodiment of the utility model, the battery protection board 3 is vertically arranged with the first circuit board 1, so that the first end of the battery protection board 3 is conveniently abutted with the first circuit board 1, the second end of the battery protection board 3 is abutted with the second circuit board 2, and the internal space of the electronic equipment can be reasonably utilized, so that the charging path of the battery 4 is reduced.

Alternatively, the included angle between the battery protection board 3 and the first circuit board 1 may be an acute angle or an obtuse angle, which may be specifically set according to practical requirements, and the embodiment of the present utility model is not limited thereto specifically.

Optionally, the electronic device may further comprise a battery 4; the battery 4 may be disposed between the first circuit board 1 and the second circuit board 2, and the battery 4 may be disposed side by side with the battery protection board 3 and may be electrically connected with the battery protection board 3.

In the embodiment of the utility model, the battery 4 is arranged between the first circuit board 1 and the second circuit board 2 and is arranged side by side with the battery protection board 3, so that the internal space of the electronic equipment can be reasonably utilized, and the whole space of the electronic equipment is saved.

The electronic equipment provided by the embodiment of the utility model at least comprises the following advantages:

in an embodiment of the utility model, a first connection terminal is arranged on one side of the first circuit board, a second connection terminal is arranged on one side of the second circuit board, the battery protection board is arranged between the first circuit board and the second circuit board, and a third connection terminal and a fourth connection terminal are respectively arranged at two ends of the battery protection board; the third connecting terminal is electrically connected with the first connecting terminal, the fourth connecting terminal is electrically connected with the second connecting terminal, conduction between the first circuit board and the second circuit board and conduction between the first circuit board and the battery protection board can be realized, FPC and BTB can be prevented from being arranged, a charging path is further shortened, and cost is saved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electronic device, comprising:

a first circuit board (1), wherein a first connection terminal (11) is arranged on one side of the first circuit board (1);

the second circuit board (2) is arranged parallel to and at intervals from the first circuit board (1), and a second connecting terminal is arranged on one side (2) of the second circuit board;

the battery protection board (3) set up in between first circuit board (1) with second circuit board (2), the first end of battery protection board (3) is provided with third connecting terminal (31), the second end of battery protection board (3) is provided with fourth connecting terminal (32), third connecting terminal (31) with first connecting terminal (11) electricity is connected, fourth connecting terminal (32) with second connecting terminal electricity is connected.

2. The electronic device according to claim 1, characterized in that the third connection terminal (31) is opposite to and in abutment with the first connection terminal (11);

the fourth connection terminal (32) is opposite to and in contact with the second connection terminal.

3. The electronic device according to claim 2, characterized in that a side of the first circuit board (1) facing the battery protection board (3) is provided with a first groove, the first connection terminal (11) is arranged in the first groove, the third connection terminal (31) protrudes from the first end of the battery protection board (3), and at least part of the third connection terminal (31) is embedded in the first groove;

and/or, one side of the second circuit board (2) facing the battery protection board (3) is provided with a second groove, the second connecting terminal is arranged in the second groove, the fourth connecting terminal (32) protrudes out of the second end of the battery protection board (3), and at least part of the fourth connecting terminal (32) is embedded in the second groove.

4. The electronic device according to claim 2, characterized in that a first end of the battery protection plate (3) is provided with a third recess, the third connection terminal (31) being arranged in the third recess, the first connection terminal (11) protruding from a side of the first circuit board (1) facing the battery protection plate (3), at least part of the first connection terminal (11) being embedded in the third recess;

and/or the second end of the battery protection board (3) is provided with a fourth groove, the fourth connecting terminal (32) is arranged in the fourth groove, the second connecting terminal protrudes out of one side of the second circuit board (2) facing the battery protection board (3), and at least part of the second connecting terminal is embedded in the fourth groove.

5. The electronic device according to claim 2, characterized in that at least part of the first connection terminal (11) protrudes from a side of the first circuit board (1) facing the battery protection board (3), and at least part of the third connection terminal (31) protrudes from a first end of the battery protection board (3);

and/or at least part of the second connection terminal protrudes from one side of the second circuit board (2) facing the battery protection board (3), and at least part of the fourth connection terminal (32) protrudes from the second end of the battery protection board (3).

6. The electronic device according to claim 1, wherein the first connection terminal (11) includes a first connection interface, a first display screen conversion interface, and a charging interface that are disposed at intervals, the second connection terminal includes a second connection interface and a second display screen conversion interface that are disposed at intervals, the third connection terminal (31) includes a first pin (311), a second pin (312), and a third pin (313) that are disposed at intervals, and the fourth connection terminal (32) includes a fourth pin (321) and a fifth pin (322) that are disposed at intervals;

the first pin (311) and the fourth pin (321) are arranged oppositely, the first pin (311) is electrically connected with the first connection interface, and the fourth pin (321) is electrically connected with the second connection interface;

the second pins (312) and the fifth pins (322) are oppositely arranged, the second pins (312) are electrically connected with the first display screen switching port, and the fifth pins (322) are electrically connected with the second display screen switching port;

the third pin (313) is electrically connected with the charging interface.

7. An electronic device according to claim 3, characterized in that the bottom of the first recess is provided with a bare copper layer (13), and the first connection terminal (11) comprises a nickel layer (111) and a gold layer (112) arranged in sequence on the copper layer (13);

the gold layer (112) is electrically connected to the third connection terminal (31).

8. The electronic device of claim 7, wherein a cross-sectional shape of the first groove in a direction perpendicular to an axis thereof comprises: at least one of circular, elliptical and square.

9. The electronic device according to claim 2, characterized in that the battery protection board (3) is arranged perpendicular to the first circuit board (1).

10. The electronic device according to claim 9, characterized in that the electronic device further comprises a battery (4);

the battery (4) is arranged between the first circuit board (1) and the second circuit board (2), and the battery (4) and the battery protection board (3) are arranged side by side and are electrically connected with the battery protection board (3).