CN217822979U - Terminal device - Google Patents

Abstract

The application discloses terminal equipment belongs to the technical field of electron. The terminal device includes: the battery comprises a shell, a battery cover, a battery assembly, a heat conduction layer and a heat dissipation assembly. A packaging head of a battery assembly in the terminal equipment is bonded with one surface of the heat conduction layer, and the other surface of the heat conduction layer is in contact with the battery cover. A heat dissipation assembly is fixed in the accommodating cavity on the battery cover, and an overlapping area exists between the orthographic projection of the heat dissipation assembly on the battery cover and the orthographic projection of the heat conduction layer on the battery cover. Like this, the produced heat of battery pack's encapsulation head department can be timely derive and convey to the battery cover through the heat-conducting layer, and then through the timely effluvium of heat that radiating component will conduct on the battery cover, the effectual operating temperature who reduces battery pack has guaranteed the efficiency that battery pack charges and discharges.

Description

Terminal device

Technical Field

The application relates to the technical field of electronics, in particular to a terminal device.

Background

With the rapid development of integrated circuits and the internet, 3C electronic devices such as computers, communication and consumer electronics have become more and more popular in people's lives. Such electronic devices (e.g., cell phones) typically include a housing, and a battery assembly fixedly mounted within the housing, the battery assembly providing electrical power for operation of the electronic device.

The battery pack generally has a package head where much heat is generated during the charge and discharge of the battery pack. If the battery pack operates in a high temperature environment for a long time, the internal structure thereof may be damaged, resulting in a decrease in the efficiency of charging and discharging the battery pack.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a terminal device. The problem that the temperature of the packaging head of the battery pack in the prior art is high can be solved, and the technical scheme is as follows:

in one aspect, a terminal device is provided, where the terminal device includes:

the battery comprises a shell, a battery cover, a battery assembly, a heat conduction layer and a heat dissipation assembly;

the shell is connected with the battery cover, an accommodating space is formed between the shell and the battery cover, and the battery cover is provided with an accommodating cavity;

the battery assembly is arranged in the accommodating space and is provided with an encapsulating head;

one surface of the heat conduction layer is bonded with the packaging head, and the other surface of the heat conduction layer is contacted with the battery cover;

the heat dissipation assembly is fixed in the accommodating cavity, and an overlapping area exists between the orthographic projection of the heat dissipation assembly on the battery cover and the orthographic projection of the heat conduction layer on the battery cover.

Optionally, the heat dissipation assembly includes: the heat absorption layer is in contact with the bottom surface, close to the battery component, in the accommodating cavity, and is in contact with the heat dissipation piece;

wherein the orthographic projection of the heat absorbing layer on the battery cover covers the orthographic projection of the heat conducting layer on the battery cover.

Optionally, an annular sealing member is arranged in the accommodating cavity, and the heat absorbing layer is located in a sealing cavity defined by the annular sealing member.

Optionally, the heat absorbing layer is a film structure made of a phase change material.

Optionally, the battery cover includes: the battery assembly comprises a support plate and a battery cover body, wherein the support plate is connected with the shell, the battery cover body is connected with the support plate, one side of the support plate, which is far away from the battery assembly, is provided with an accommodating cavity, and the battery cover body covers the accommodating cavity;

the annular sealing element is fixed on the supporting plate, and one side, which is far away from the supporting plate, of the annular sealing element is abutted to the battery cover body.

Optionally, after the supporting plate is connected to the battery cover body, the annular sealing member is compressively deformed in a direction perpendicular to the bottom surface.

Optionally, the heat dissipation element includes: the heat absorption layer is arranged on the heat absorption layer, the strip-shaped radiating fins are arranged on the heat absorption layer, and the strip-shaped radiating fins are arranged on the heat absorption layer.

Optionally, the heat dissipation element further comprises: and the two ends of each strip-shaped radiating fin are connected with the annular radiating fins.

Optionally, the bottom surface of the accommodating cavity is provided with a bearing groove, the heat dissipation member is located in the bearing groove, and one surface of the heat dissipation member departing from the battery assembly is coplanar with the bottom surface of the accommodating cavity.

Optionally, the terminal device further includes: and the protection plate is connected with the packaging head of the battery component and is bonded with one surface of the heat conduction layer.

The beneficial effects that technical scheme that this application embodiment brought include at least:

a terminal device may include: the battery comprises a shell, a battery cover, a battery assembly, a heat conduction layer and a heat dissipation assembly. A packaging head of a battery assembly in the terminal equipment is bonded with one surface of the heat conduction layer, and the other surface of the heat conduction layer is in contact with the battery cover. A heat dissipation assembly is fixed in the accommodating cavity on the battery cover, and an overlapping area exists between the orthographic projection of the heat dissipation assembly on the battery cover and the orthographic projection of the heat conduction layer on the battery cover. Like this, the produced heat of battery pack's encapsulation head department can be timely derive and convey to the battery lid through the heat-conducting layer on, and then through the timely effluvium of heat subassembly heat that will conduct to on the battery lid, the effectual operating temperature who reduces battery pack has guaranteed the efficiency that battery pack charges and discharges.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 2 is an exploded schematic view of the terminal device shown in fig. 1;

fig. 3 is a top view of a terminal device provided in an embodiment of the present application;

FIG. 4 isbase:Sub>A schematic cross-sectional view at A-A' of FIG. 3;

fig. 5 is a schematic partial structure diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a top view of the terminal device shown in fig. 5;

FIG. 7 is a cross-sectional view of FIG. 6 at B-B';

fig. 8 is a schematic structural diagram of another terminal device provided in an embodiment of the present application;

fig. 9 is an exploded view of the terminal device shown in fig. 8;

fig. 10 is a sectional view of the terminal device shown in fig. 8;

fig. 11 is an exploded view of a support plate and heat dissipation assembly according to an embodiment of the present disclosure.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application provides a terminal device, which includes but is not limited to: mobile phones, tablet computers, ipads, digital broadcast terminals, messaging devices, game consoles, medical devices, fitness devices, personal digital assistants, smart wearable devices, smart televisions, and the like. Referring to fig. 1, fig. 1 is a schematic structural diagram of a terminal device according to an embodiment of the present application, and fig. 2 is an exploded schematic diagram of the terminal device shown in fig. 1. The terminal device 000 may include: housing 100, battery cover 200, battery assembly 300, thermally conductive layer 400, and heat dissipation assembly 500.

The housing 100 of the terminal device 000 may be connected to the battery cover 200, and an accommodating space 101 may be provided between the housing 100 and the battery cover 200. The battery cover 200 may have a receiving cavity 201. It should be noted that the terminal device 000 may further include: and a display panel (not shown) adhered to the side of the housing 100 away from the battery cover 200. In this way, a closed accommodating space may be formed in the terminal device 000 by the display panel, the housing 100, and the battery cover 200.

The battery assembly 300 in the terminal device 000 may be mounted in the accommodating space 101, and the battery assembly 300 has a package head 301.

To more clearly see the position relationship between the heat conducting layer and the heat dissipating assembly, please refer to fig. 3 and fig. 4, fig. 3 isbase:Sub>A top view ofbase:Sub>A terminal device provided by an embodiment of the present application, and fig. 4 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A' of fig. 3. One side of heat conductive layer 400 in terminal device 000 may be bonded to package header 301 in battery assembly 300, and the other side of heat conductive layer 400 may be in contact with battery cover 200. For example, the heat conductive layer 400 may be a film structure made of a heat conductive material, such as a heat conductive foam, which is not specifically limited in this application.

The heat dissipation assembly 500 in the terminal device 000 may be fixed in the receiving cavity 201 in the battery cover 200, and there may be an overlapping area between the orthographic projection of the heat dissipation assembly 500 on the battery cover 200 and the orthographic projection of the heat conductive layer 400 on the battery cover 200.

In the embodiment of the present application, the package head 301 of the battery assembly 300 in the terminal device 000 is bonded to one surface of the heat conductive layer 400, and the other surface of the heat conductive layer 400 is in contact with the battery cover 200. The heat dissipation assembly 500 is fixed in the accommodating cavity 201 on the battery cover 200, and an overlapping region exists between the orthographic projection of the heat dissipation assembly 500 on the battery cover 200 and the orthographic projection of the heat conduction layer 400 on the battery cover 200. In this way, the heat generated at the packaging head 301 of the battery assembly 300 can be timely conducted out through the heat conducting layer 400 and transmitted to the battery cover 200, and then the heat conducted to the battery cover 200 is timely dissipated through the heat dissipating assembly 500, so that the working temperature of the battery assembly 300 is effectively reduced, and the charging and discharging efficiency of the battery assembly 300 is ensured.

To sum up, an embodiment of the present application provides a terminal device, which may include: the battery comprises a shell, a battery cover, a battery assembly, a heat conduction layer and a heat dissipation assembly. A packaging head of a battery assembly in the terminal equipment is bonded with one surface of the heat conduction layer, and the other surface of the heat conduction layer is in contact with the battery cover. A heat dissipation assembly is fixed in the accommodating cavity on the battery cover, and an overlapping area exists between the orthographic projection of the heat dissipation assembly on the battery cover and the orthographic projection of the heat conduction layer on the battery cover. Like this, the produced heat of battery pack's encapsulation head department can be timely derive and convey to the battery lid through the heat-conducting layer on, and then through the timely effluvium of heat subassembly heat that will conduct to on the battery lid, the effectual operating temperature who reduces battery pack has guaranteed the efficiency that battery pack charges and discharges.

Optionally, please refer to fig. 5, fig. 6, and fig. 7, where fig. 5 is a schematic diagram of a partial structure of a terminal device provided in an embodiment of the present application, fig. 6 is a top view of the terminal device shown in fig. 5, and fig. 7 is a cross-sectional view of fig. 6 at B-B'. The heat dissipation assembly 500 in the terminal device 000 may include: a heat sink layer 501 and a heat spreader 502. The heat sink 501 may be in contact with the bottom surface A1 of the receiving cavity 201 on the battery cover 200 near the battery assembly 300 and in contact with the heat sink 502. The orthographic projection of the heat absorbing layer 501 on the battery cover 200 can cover the orthographic projection of the heat conducting layer 400 on the battery cover 200. In this case, the heat sink 501 is brought into contact with the bottom surface A1 of the receiving cavity 201 of the cell cover 200 near the cell assembly 300 and is brought into contact with the heat sink 502. In this way, heat generated at the package head 301 of the battery assembly 300 can be timely conducted out through the heat conducting layer 400 and transmitted to the battery cover 200, and then the heat conducted to the battery cover 200 is absorbed through the heat absorbing layer 501, and the heat on the heat absorbing layer 501 is conducted to the heat dissipating member 502, and then the heat is dissipated through the heat dissipating member 502. In the present application, the heat sink 502 may be located between the heat sink layer 501 and the bottom surface A1 of the battery cover 200 inside the receiving cavity 201 adjacent to the battery assembly 300, and one surface of the heat sink layer 501 adjacent to the bottom surface A1 of the receiving cavity 201 is in contact with the heat sink 502.

In the embodiment of the present application, as shown in fig. 5, 6 and 7, an annular sealing member 202 is disposed in the accommodating cavity 201 in the cell cover 200, and the heat sink layer 501 may be disposed in a sealing cavity surrounded by the annular sealing member 202. In this case, the heat absorbing layer 501 can be fixed at the target position by the sealing cavity defined by the annular sealing member 202, so that the heat conducted to the cell cover 200 can be absorbed in time, and the efficiency of heat absorption of the heat absorbing layer 501 is ensured. The target position, namely, the orthographic projection of the heat absorbing layer 501 on the battery cover 200 covers the position of the heat conducting layer 400 when orthographic projection is carried out on the battery cover 200.

Alternatively, the heat absorbing layer 501 in the heat dissipation assembly 500 may be a film structure made of a phase change material. Thus, since the heat absorbing layer 501 is a film structure made of phase change material, the heat absorbing layer 501 can be located in the sealed cavity enclosed by the annular sealing member 202. Therefore, after the heat absorbing layer 501 absorbs heat and undergoes a phase change reaction, the annular sealing member 202 can ensure that the heat absorbing layer 501 is located in the sealed cavity defined by the annular sealing member 202. Illustratively, when the heat sink layer 501 made of the phase change material changes from a solid state to a liquid state, the liquid heat sink layer may still be located in the sealed cavity defined by the annular sealing member 202. For example, the phase change material may be an inorganic phase change material, an organic phase change material, a composite phase change material, or the like. The inorganic phase change material may be sulfate, nitrate, etc. The organic phase change material can be aliphatic hydrocarbon, fatty acid, alcohol, polyvinyl alcohol, polyalcohol, macromolecule, layered perovskite and the like. The composite phase-change material can be a paraffin and expanded graphite composite material, a porous matrix and organic material composite material and the like. The phase change material absorbs heat transferred from the heat conductive layer 400 to the battery cover 200 through its phase change reaction, and the phase change material also dissipates the absorbed heat through the phase change reaction, and the dissipated heat is transferred to the heat dissipating member 502 and dissipated by the heat dissipating member 502.

The phase-change reaction is a process of converting a phase-change material from one phase to another phase, and the phase-change material only comprises three conditions of a gas phase, a liquid phase and a solid phase, so that the conversion between the gas phase and the liquid phase, the conversion between the liquid phase and the solid phase and the like are all phase-change reactions. It should be noted that, in other realizable manners, the heat absorbing layer 501 may also be made of other materials with heat absorbing properties, which is not specifically limited in the embodiments of the present application.

In the embodiment of the present application, please refer to fig. 8, 9, and 10, fig. 8 is a schematic structural diagram of another terminal device provided in the embodiment of the present application, fig. 9 is an exploded schematic diagram of the terminal device shown in fig. 8, and fig. 10 is a cross-sectional view of the terminal device shown in fig. 8. The battery cover 200 in the terminal device 000 may include: a support plate 203 and a battery cover body 204, the support plate 203 being connectable with the housing 100 in the terminal device 000, and the support plate 203 being connected with the battery cover body 204. The side of the support plate 203 facing away from the battery assembly 300 may have an accommodation cavity 201, and the battery cover body 204 may cover the accommodation cavity 201. The annular sealing member 202 may be fixed on the supporting plate 203, and a side of the annular sealing member 202 facing away from the supporting plate 203 may abut against the battery cover body 204. In this case, by providing the accommodating cavity 201 on the supporting plate 203, the heat dissipation assembly 500 can be located in the accommodating cavity 201 on the supporting plate 203, and the battery cover body 204 can cover the accommodating cavity 201, thereby protecting the heat dissipation assembly 500 to a certain extent. The side of the annular seal 202 facing away from the support plate 203 may abut the cell cover body 204 to form a sealed cavity. In addition, the heat emitted from the heat dissipation assembly 500 can be finally dissipated to the external environment through the support plate 203 and the battery cover body 204, thereby providing a good protection effect for the terminal device 000.

Alternatively, after the support plate 203 in the cell cover 200 is connected to the cell cover body 204, the annular seal member 202 in the accommodation cavity 201 may be compressively deformed in a direction perpendicular to the bottom surface A1 of the cell assembly 300 in the accommodation cavity 201. In the present application, the annular seal 202 may be an annular structure made of an elastic material. In this case, by forming the annular seal member 202 from an elastic material, after the support plate 203 in the battery cover 200 is connected to the battery cover body 204, the battery cover body 204 abuts against the annular seal member 202 having elasticity, and the elastic annular seal member 202 is deformed to some extent. Thus, the sealed cavity surrounded by the annular sealing member 202 can be sealed, and the heat absorbing layer 501 made of the phase change material can be prevented from leaking out of the annular sealing member 202 after the phase change reaction. By way of example, the annular seal 202 may be a structure made of a rubber material.

In the embodiment of the present application, please refer to fig. 11, and fig. 11 is an exploded schematic view of a supporting plate and a heat dissipation assembly provided in the embodiment of the present application. Heat sink 502 in heat sink assembly 500 may include: the strip-shaped heat dissipation fins 5021 and the strip-shaped heat dissipation fins 5021 are arranged in a manner that the length direction of each strip-shaped heat dissipation fin 5021 can intersect with the extension direction of the heat absorption layer 501, and each strip-shaped heat dissipation fin 5021 and the heat absorption layer 501 form an intersection region. In this case, the plurality of bar-shaped heat sinks 5021 are in contact with the heat absorbing layer 501, heat conducted into the heat absorbing layer 501 can be timely conducted to the respective bar-shaped heat sinks 5021, and then the heat is conducted to the battery cover 200 and dissipated to the external environment by the battery cover 200. In this application, the length direction of each strip-shaped heat sink 5021 may be parallel to the length direction of the terminal device 000, and the length directions of each strip-shaped heat sink 5021 are parallel to each other and may be perpendicular to the extending direction of the heat absorbing layer 501. For example, the number of the plurality of strip-shaped heat sinks 5021 may be three, and it should be noted that, in the process of practical application, the number of the strip-shaped heat sinks 5021 may be set according to the width of the terminal device 000, which is not specifically limited in this embodiment of the present application.

Optionally, the heat dissipation member 502 in the heat dissipation assembly 000 may further include: the annular heat radiating fins 5022, both ends of each of the bar-shaped heat radiating fins 5021 may be connected with the annular heat radiating fins 5022. In this case, by coupling the ring-shaped heat sink 5022 with the respective bar-shaped heat sinks 5021, the heat conducted into the heat sink layer 501 can be dissipated to the respective positions of the cell cover 200 by the cooperation of the bar-shaped heat sinks 5021 and the ring-shaped heat sinks 5022, further increasing the efficiency of heat dissipation using the heat sink 502. In the present application, each of the plurality of bar-shaped fins 5021 and the ring-shaped fins 5022 may be made of metal having a good heat dissipation coefficient. Such as a copper sheet or other metal sheet, which is not specifically limited in this application.

In the embodiment of the present application, as shown in fig. 10 and 11, a bottom surface A1 of the receiving cavity 201 in the battery cover 200 near the battery assembly 300 may have a bearing groove 205, the heat dissipation member 502 may be located in the bearing groove 205, and a side of the heat dissipation member 502 facing away from the battery assembly 300 may be coplanar with the bottom surface A1 of the receiving cavity 201 in the battery cover 200. In this case, by mounting the heat sink 502 in the bearing groove 205 provided on the bottom surface A1 of the accommodation chamber 201 in the battery cover 200, the mounting stability of the heat sink 502 and the battery cover 200 is increased. In addition, when the surface of the heat sink 502 facing away from the battery module 300 is coplanar with the bottom surface A1 of the accommodating cavity 201, the flatness of the surface of the heat absorbing layer 501 close to the bottom surface A1 of the accommodating cavity 201 can be ensured, thereby ensuring the thinning of the terminal device 000.

In the present application, as shown in fig. 11, the bearing groove 205 may include: a plurality of first sub-bearing grooves 2051 and second sub-bearing grooves 2052 corresponding to the plurality of bar-shaped heat sinks 5021 one to one. The shape of the first sub bearing groove 2051 is matched with the shape of the strip-shaped heat sink 5021, the shape of the second sub bearing groove 2052 is matched with the shape of the annular heat sink 5022, and the first sub bearing groove 2051 is communicated with the second sub bearing groove 2052. Wherein, each strip-shaped heat sink 5021 may be located in the corresponding first sub-bearing groove 2051, and the annular heat sink 5022 may be located in the second sub-bearing groove 2052.

Optionally, as shown in fig. 9 and 10, the terminal device 000 may further include: the protective plate 600 is connected to the package head 301 of the battery assembly 300, the protective plate 600 may be adhered to one surface of the heat conductive layer 400, and the other surface of the heat conductive layer 400 may be in contact with the battery cover 200. In this case, the protective plate 600 in the terminal device 000 is bonded to one surface of the heat conductive layer 400, and the other surface of the heat conductive layer 400 is in contact with the battery cover 200. Therefore, heat generated at the protective plate 600 can be timely conducted out through the heat conducting layer 400 and conducted to the battery cover 200, and then the heat conducted to the battery cover 200 is timely dissipated through the heat dissipation assembly 500, so that the working temperature of the battery assembly 300 is effectively reduced, and the charging and discharging efficiency of the battery assembly 300 is ensured.

In this embodiment, as shown in fig. 9 and 10, the terminal device may further include: the display panel 700 may be connected to the housing 100 at a rear surface of the display panel 700, and the rear surface of the display panel 700 is a surface opposite to the display surface of the display panel 700.

To sum up, an embodiment of the present application provides a terminal device, which may include: the battery comprises a shell, a battery cover, a battery assembly, a heat conduction layer and a heat dissipation assembly. A packaging head of a battery assembly in the terminal equipment is bonded with one surface of the heat conduction layer, and the other surface of the heat conduction layer is in contact with the battery cover. A heat dissipation assembly is fixed in the accommodating cavity on the battery cover, and an overlapping area exists between the orthographic projection of the heat dissipation assembly on the battery cover and the orthographic projection of the heat conduction layer on the battery cover. Like this, the produced heat of battery pack's encapsulation head department can be timely derive and convey to the battery lid through the heat-conducting layer on, and then through the timely effluvium of heat subassembly heat that will conduct to on the battery lid, the effectual operating temperature who reduces battery pack has guaranteed the efficiency that battery pack charges and discharges.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims (10)

1. A terminal device, comprising: the battery comprises a shell (100), a battery cover (200), a battery assembly (300), a heat conducting layer (400) and a heat radiating assembly (500);

the shell (100) is connected with the battery cover (200), an accommodating space (101) is formed between the shell (100) and the battery cover (200), and the battery cover (200) is provided with an accommodating cavity (201);

the battery assembly (300) is arranged in the accommodating space (101), and the battery assembly (300) is provided with a packaging head (301);

one surface of the heat conduction layer (400) is bonded with the packaging head (301), and the other surface of the heat conduction layer is in contact with the battery cover (200);

the heat dissipation assembly (500) is fixed in the accommodating cavity (201), and an overlapping area exists between the orthographic projection of the heat dissipation assembly (500) on the battery cover (200) and the orthographic projection of the heat conduction layer (400) on the battery cover (200).

2. The terminal device of claim 1, wherein the heat sink assembly (500) comprises: a heat absorbing layer (501) and a heat dissipating member (502), the heat absorbing layer (501) being in contact with a bottom surface (A1) of the housing cavity (201) near the battery assembly (300) and in contact with the heat dissipating member (502);

wherein the orthographic projection of the heat absorbing layer (501) on the battery cover (200) covers the orthographic projection of the heat conducting layer (400) on the battery cover (200).

3. A terminal device according to claim 2, wherein the receiving cavity (201) has an annular sealing member (202) therein, and the heat absorbing layer (501) is located in a sealing cavity enclosed by the annular sealing member (202).

4. A terminal device according to claim 3, characterized in that the heat absorbing layer (501) is a film structure made of a phase change material.

5. A terminal device according to claim 3, characterized in that the battery cover (200) comprises: a support plate (203) connected with the shell (100), and a battery cover body (204) connected with the support plate (203), wherein the accommodating cavity (201) is arranged on one side of the support plate (203) departing from the battery assembly (300), and the accommodating cavity (201) is covered by the battery cover body (204);

the annular sealing piece (202) is fixed on the supporting plate (203), and one side, away from the supporting plate (203), of the annular sealing piece (202) abuts against the battery cover body (204).

6. Terminal device according to claim 5, characterized in that the annular seal (202) is compressively deformed in a direction perpendicular to the bottom surface (A1) after the support plate (203) is connected with the battery cover body (204).

7. A terminal device according to claim 2, characterized in that the heat sink (502) comprises: the heat absorption layer (501) is arranged on the heat absorption layer (5021), the length direction of each strip-shaped heat dissipation fin (5021) is intersected with the extension direction of the heat absorption layer (501), and a crossed area exists between each strip-shaped heat dissipation fin (5021) and the heat absorption layer (501).

8. The terminal device according to claim 7, wherein the heat sink (502) further comprises: and the two ends of each strip-shaped radiating fin (5021) are connected with the annular radiating fin (5022).

9. A terminal device according to claim 2, characterized in that the bottom surface (A1) of the receiving cavity (201) has a carrying groove (205), the heat dissipation member (502) is located in the carrying groove (205), and a side of the heat dissipation member (502) facing away from the battery assembly (300) is coplanar with the bottom surface (A1) of the receiving cavity (201).

10. The terminal device according to any one of claims 1 to 9, wherein the terminal device further comprises: and the protective plate (600) is connected with the packaging head (301) of the battery assembly (300), and the protective plate (600) is bonded with one surface of the heat conduction layer (400).

Images