CN219180697U - Battery cover assembly and terminal device - Google Patents

Abstract

The application discloses battery cover subassembly and terminal equipment belongs to battery cover design technical field. The battery cover assembly includes: a cover, a rigid support, and a coil assembly; the first surface of the cover body is provided with a containing part; the rigid support piece is positioned in the accommodating part and is connected with the cover body; the coil assembly is located on the same side of the rigid support as the first surface and is connected to the rigid support. By adopting the scheme, the rigid support piece has higher rigidity than the cover body, so that the thickness of the rigid support piece is smaller than that required by the cover body under the same rigidity requirement, and the thickness of the terminal equipment is reduced. Moreover, under the condition that the rigid support member meets the rigidity requirement of the coil assembly, the cover body can be integrally made thinner, so that the thickness of the whole machine is reduced, and the light and thin design of the terminal equipment is improved.

Description

Battery cover assembly and terminal device

Technical Field

The application relates to the technical field of battery cover design, in particular to a battery cover assembly and terminal equipment.

Background

As technology rapidly develops, functions of mobile terminal devices (such as mobile phones, tablet computers, etc.) become more and more powerful, and more mobile terminal devices begin to have a wireless charging function.

In a mobile terminal device having a wireless charging function, a wireless charging coil assembly is generally disposed, and the wireless charging coil assembly is electrically connected to a battery in the mobile terminal device. In order to ensure the stability of the wireless charging coil in the mobile terminal device, the wireless charging coil assembly is typically adhered to the surface of the battery cover or to the surface of the battery. Moreover, the battery cover needs to have a certain thickness to meet the rigidity requirement of the wireless charging coil assembly for the battery cover.

In the related art, the wireless charging coil assembly and the battery cover have certain thicknesses, and occupy the internal space of the mobile terminal device, so that the overall size of the mobile terminal device is affected, and the design of the mobile terminal device towards light weight and thinness is not facilitated.

Disclosure of Invention

The embodiment of the application provides a battery cover assembly and terminal equipment, which can solve the problem that a wireless charging coil assembly in the related art is unfavorable for the design of a mobile terminal equipment with a wireless charging function towards light and thin.

The technical proposal is as follows:

in a first aspect, the present application provides a battery cover assembly comprising: a cover, a rigid support, and a coil assembly;

the cover body is provided with a first surface and a second surface which are opposite, and the first surface is provided with a containing part;

the rigid support piece is positioned in the accommodating part and is connected with the cover body;

the coil assembly is positioned on one surface of the rigid support member away from the second surface and is connected with the rigid support member.

In one possible implementation, the receiving portion extends through the cover, and a surface of the rigid support remote from the coil assembly is flush with the second surface.

In one possible implementation, the coil assembly is detachably connected to the rigid support.

In one possible implementation, the battery cover assembly further includes at least one limit portion;

the limiting part is positioned on the first surface, is positioned on at least one side of the accommodating part, is connected with the cover body, and is at least partially positioned in the accommodating part in the orthographic projection of the limiting part on the first surface;

the rigid support piece and the coil assembly piece are both positioned on one surface of the limiting part, which is close to the cover body.

In one possible implementation, the rigid support comprises a support body and at least one connection;

the connecting part is positioned on at least one side of the support piece body and is connected with the support piece body;

a supporting chute is formed between the connecting part and the supporting piece body, and the coil assembly is at least partially positioned in the supporting chute.

In one possible implementation manner, the cover body is provided with a plurality of limit buckles, the limit buckles are located in the containing part and connected with the cover body, and the limit buckles are clamped with the rigid support piece.

In one possible implementation, the cover includes: the cover body comprises a cover body, a first bending part and a second bending part;

the accommodating portion is located on the first surface;

the first bending part and the second bending part are respectively positioned on two opposite sides of the cover body and are respectively connected with the cover body, and the first bending part and the second bending part are respectively bent towards the first surface from the cover body.

In one possible implementation, the battery cover assembly further includes a coil backing layer, and the coil assembly and the cover are bonded by the coil backing layer.

In one possible implementation, the battery cover assembly further includes a layer of fire-resistant paint located on the first surface and outside the receptacle.

In one possible implementation, the battery cover assembly further includes a polyurethane layer located on a side of the cover remote from the first surface and coupled to the cover.

In one possible implementation, the battery cover assembly further includes a cover backsize layer, the cover and the polyurethane layer being bonded by the cover backsize layer.

In one possible implementation, the coil assembly includes a wireless charging coil, a near field communication coil, and a connector, the wireless charging coil being disposed around the near field communication coil, the wireless charging coil, the near field communication coil being electrically connected with the connector, respectively.

In a second aspect, the present application provides a terminal device, including a middle frame, a main board, a battery, and a battery cover assembly as in any one of the first aspect and its possible implementation manners;

the main board is positioned in the middle frame, the batteries are respectively connected with the middle frame, the main board is electrically connected with the batteries, the battery cover assembly is connected with the middle frame, and the coil assembly of the battery cover assembly is electrically connected with the main board.

The beneficial effects that technical scheme that this application embodiment provided brought are:

in the scheme provided by the embodiment of the application, the battery cover assembly comprises a cover body, a rigid support piece and a coil assembly. The first surface of the cover body is provided with a containing part, the rigid support piece is positioned in the containing part and is connected with the cover body, and the coil assembly piece is positioned on one surface of the rigid support piece, which is positioned on the same side with the first surface, and is connected with the rigid support piece. By adopting the scheme, the rigid support piece has higher rigidity than the cover body, so that the thickness of the rigid support piece is smaller than that required by the cover body under the same rigidity requirement, and the thickness of the terminal equipment is reduced. Moreover, under the condition that the rigid support member meets the rigidity requirement of the coil assembly, the cover body can be integrally made thinner, so that the thickness of the whole machine is reduced, and the light and thin design of the terminal equipment is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 2 is an exploded view of the battery cover assembly shown in fig. 1 provided in an embodiment of the present application;

fig. 3 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 4 is a schematic view of a partial structure of a battery cover assembly according to an embodiment of the present application;

fig. 5 is a schematic view of a partial structure of a battery cover assembly according to an embodiment of the present application;

fig. 6 is a schematic view of a partial structure of a battery cover assembly according to an embodiment of the present application;

FIG. 7 is a schematic view of a rigid support provided in an embodiment of the present application;

fig. 8 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 9 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 10 is a schematic view of a partial structure of a battery cover assembly according to an embodiment of the present application;

fig. 11 is a schematic structural view of a cover provided in an embodiment of the present application;

fig. 12 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 13 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 14 is a schematic structural view of a battery cover assembly according to an embodiment of the present application;

fig. 15 is a schematic structural view of a coil assembly according to an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

Description of the drawings

1. A cover body; 2. a rigid support; 3. a coil assembly; 4. a coil back adhesive layer; 5. a layer of fire-retardant coating; 6. a polyurethane layer; 7. a cover body back adhesive layer;

11. a first surface; 12. a second surface; 13. a cover body; 14. a first bending part; 15. a second bending part; 16. a third bending part; 17. a fourth bending part; 21. a support body; 22. a connection part; 2A, a limit groove; 31. a wireless charging coil; 32. a near field communication coil; 33. a connector;

11A, a limiting part; 11B, a cover body chute; 111. a housing part; 22A, supporting the chute;

111A, limiting buckle;

01. a middle frame; 02. a main board; 03. a battery; 04. and a battery cover assembly.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a battery cover assembly according to an embodiment of the present application, and fig. 2 is an exploded view of the battery cover assembly shown in fig. 1 according to an embodiment of the present application. As shown in fig. 1 and 2, the battery cover assembly includes: a cover 1, a rigid support 2 and a coil assembly 3. The first surface 11 of the cover 1 has a receiving portion 111. The rigid support member 2 is located in the accommodating portion 111, and the rigid support member 2 is connected to the cover 1, and as an example, the rigid support member 2 may be a non-magnetic metal member, which has a good rigidity, and does not interfere with the normal operation of the coil assembly 3. The coil assembly 3 is located on the same side of the rigid support 2 as the first surface 11, and the surface of the coil assembly 3 is connected to the rigid support 2.

In the terminal device of the related art, the first surface 11 of the cover 1 is generally a flat surface, and the coil assembly 3 is generally adhered to the first surface 11 or to the surface of the battery disposed opposite to the first surface 11. On the one hand, in order to prevent the top printing problem of the cover 1 due to the coil assembly 3 during the assembly process of the cover 1 and the coil assembly 3, on the other hand, the cover 1 needs to have a supporting protection function on the coil assembly 3, which needs to ensure that the cover 1 has a certain rigidity. The cover 1 is generally provided with sufficient rigidity by increasing the thickness of the cover 1.

In the scheme provided by the embodiment of the application, the accommodating part 111 is arranged on the cover body 1, the rigid support member 2 is arranged in the accommodating part 111, the coil assembly 3 is arranged on the rigid support member 2, and the rigid support member 2 meets the rigidity requirement of the coil assembly 3 on the cover body 1. With this solution, since the rigid support 2 has a higher rigidity than the cover 1, the rigid support 2 is smaller than the thickness required by the cover 1 under the same rigidity requirement, and therefore, the thickness of the terminal device is advantageously reduced. Moreover, under the condition that the rigid support member 2 meets the rigidity requirement of the coil assembly 3, the cover body 1 can be integrally made thinner, so that the thickness of the whole machine is reduced, and the light and thin design of the terminal equipment is improved.

In some examples, the receptacle 111 is a groove. The rigid support member 2 is positioned in the recess and is connected to the bottom surface of the recess.

In other examples, the receiving portion 111 may extend through the entire cover 1, i.e., the receiving portion 111 is a through hole. Fig. 3 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown with reference to fig. 1 and 3, when the receiving portion 111 penetrates the cover 1, the surface of the rigid support member 2 remote from the coil assembly 3 is flush with the second surface 12 of the cover 1, wherein the second surface 12 is opposite to the first surface 11. By adopting the scheme, the space occupied by the cover body 1 in the terminal equipment can be more fully utilized, the characteristic that the rigid support piece 2 has higher rigidity is fully utilized, and the thickness of the cover body 1 is further reduced, so that the light and thin design of the terminal equipment is facilitated to be improved.

In some examples, the coil assembly 3 and the rigid support 2 may be detachably connected. In the related art, the coil assembly 3 is generally adhered to the first surface 11 of the cover 1, and the coil assembly 3 cannot be detached and replaced independently after the adhesion. When the coil assembly 3 or the cover 1 is damaged, the coil assembly 3 and the cover 1 need to be replaced together, resulting in waste of the cover 1 or the coil assembly 3 and thus waste of production resources.

In the solution provided in the present embodiment, the coil assembly 3 is detachably connected to the rigid support 2. By adopting the scheme, when the coil assembly 3 or the cover body 1 is damaged, only the coil assembly 3 and the cover body 1 are required to be disassembled, and then the coil assembly 3 or the cover body 1 is independently replaced, and the parts which are not damaged can be continuously used, so that the waste of production resources is not caused.

Fig. 4 is a schematic partial structure of a battery cover assembly according to an embodiment of the present application, fig. 5 is a schematic partial structure of a battery cover assembly according to an embodiment of the present application, and fig. 6 is a schematic partial structure of a battery cover assembly according to an embodiment of the present application. Referring to fig. 4 to 6, the battery cover assembly further includes at least one stopper 11A. The limiting portion 11A is located on the first surface 11 and located on at least one side of the accommodating portion 111, and the limiting portion 11A is connected to the cover 1. At least part of the orthographic projection of the limiting portion 11A on the first surface 11 is located in the accommodating portion 111. The rigid support member 2 and the coil assembly 3 are both positioned on one surface of the limit portion 11A close to the cover 1.

As an example, as shown in fig. 4 and 5, the battery cover assembly may include two limiting parts 11A, and the two limiting parts 11A are located on the first surface 11 of the cover 1, are located at both sides of the receiving part 111, respectively, and are connected to the cover 1. The two limiting portions 11A extend in opposite directions, that is, the orthographic projection portions of the two limiting portions 11A on the first surface 11 are located in the accommodating portion 111, a gap is formed between the two limiting portions 11A and the rigid support 2, and cover sliding grooves 11B are formed on two opposite sides of the accommodating portion 111. The coil assembly 3 is inserted between the limiting part 11A and the rigid support 2 and is slidably connected with the cover body chute 11B, so as to realize detachable connection between the coil assembly 3 and the rigid support 2, and the corresponding structure is shown in fig. 6.

Fig. 7 is a schematic structural view of a rigid support member according to an embodiment of the present application, and fig. 8 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown in fig. 7 and 8, the rigid support 2 may include a support body 21 and at least one connection portion 22. The connection portion 22 is located at least one side of the support body 21 and is connected to the support body 21. A supporting chute 22A is formed between the connecting portion 22 and the support body 21, and the coil assembly 3 is at least partially located in the supporting chute 22A.

As an example, as shown in fig. 7 and 8, the rigid support member 2 may include a support member body 21 and two connection portions 22, the two connection portions 22 being located at opposite sides of the support member body 21, and the two connection portions 22 being connected to the support member body 21, respectively. A gap is formed between the two connecting portions 22 and the support body 21, i.e. two support sliding grooves 22A are formed between the two connecting portions 22 and the support body 21. The coil assembly 3 is located between the connecting portion 22 and the support body 21 and slidably connected to the above-mentioned one of the support runners 22A, thereby achieving detachable connection between the coil assembly 3 and the rigid support 2.

The above is only an exemplary list of two methods for achieving the detachable connection of the coil assembly 3 and the rigid support 2. No limitation is made here as to the method of achieving the detachable connection of the coil assembly 3 and the rigid support 2.

In other examples, the coil assembly 3 and the rigid support 2 may be fixedly connected by means of an adhesive bond. Fig. 9 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown in fig. 9, the battery cover assembly may further include a coil back adhesive layer 4, where the coil back adhesive layer 4 is located between the coil assembly 3 and the rigid support 2 and is respectively attached to the coil assembly 3 and the rigid support 2, that is, the coil assembly 3 and the rigid support 2 are adhered by the coil back adhesive layer 4.

As an example, the coil back adhesive layer 3 may employ double-sided adhesive to secure stability of the coil assembly 3 within the receiving portion 111.

As an example, the coil back adhesive layer 3 may be at least 1 easy-to-pull adhesive, and the easy-to-pull adhesive may be used to detachably connect the coil assembly 3 and the rigid support 2, thereby being beneficial to saving production resources.

Fig. 10 is a schematic view of a partial structure of a battery cover assembly according to an embodiment of the present application. As shown in fig. 10, the cover 1 has a plurality of limiting buckles 111A, the limiting buckles 111A are located in the accommodating portion 111 and connected to the cover 1, and the limiting buckles 111A are clamped with the rigid support 2. By adopting the scheme, the rigid support 2 is detachably connected with the cover body 1, and when the cover body 1 is damaged, the rigid support 2 can be detached from the cover body 1 so as to reuse the rigid support 2, thereby being beneficial to saving production resources.

In some examples, when the accommodating portion 111 is a through hole, the plurality of limit buckles 111A may be located at an inner wall of at least one side of the through hole, and each of positions on the rigid support 2 opposite to each of the limit buckles 111A has a limit groove 2A, and one limit buckle 111A is buckled with one limit groove 2A, so that the rigid support 2 and the cover 1 are clamped together.

In other examples, when the receiving portion 111 is a groove, the plurality of limit buckles 111A may be located at an inner wall of at least one side of the groove, and/or at a bottom surface of the groove. The position of the rigid support piece 2 opposite to each limiting buckle 111A is provided with a limiting groove 2A, and one limiting buckle 111A is buckled with one limiting groove 2A, so that the rigid support piece 2 and the cover body 1 are clamped.

Alternatively, the cover body 1 and the rigid support member 2 may be integrally formed by injection molding, or may be fixedly connected by welding or riveting. The connection relationship between the cover 1 and the rigid support 2 is not limited in any way.

Fig. 11 is a schematic structural view of a cover according to an embodiment of the present application. As shown in fig. 11, the cover 1 may include a cover body 13, a first bending portion 14, and a second bending portion 15, wherein the cover body 13 may have a plate-like structure, i.e., the cover body 13 is a flat plate. The receiving portion 111 is located on the cover main body 13, such as a middle position of the cover main body 11. The first bending portion 14 and the first bending portion 15 are respectively located at two opposite sides of the cover body 13 and are respectively connected with the cover body 13, and the first bending portion 14 and the first bending portion 15 are both bent toward the first surface 11 of the cover body 13 by the cover body 13.

Alternatively, as shown in fig. 11, the cover 1 may further include a third bent portion 16 and a fourth bent portion 17. The third bending portion 16 and the fourth bending portion 17 are respectively located at opposite other two sides of the cover body 13 and are respectively connected with the cover body 13, and the third bending portion 16 and the fourth bending portion 17 are respectively bent toward the first surface 11 of the cover body 13 by the cover body 13. In this case, the two adjacent bending portions are connected to each other, so that the cover 1 forms a groove structure, thereby ensuring that the cover 1 and the middle frame of the terminal device are connected together more stably.

Fig. 12 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown in fig. 12, the battery cover assembly may further include a fire-retardant coating layer 5. The layer of fire-protecting paint 5 and the receptacle 111 are both located on the first surface 11, and the layer of fire-protecting paint 5 is located outside the receptacle 111. In other words, the fireproof paint layer 5 is attached to the region of the first surface 11 except the receiving portion 111. The adoption of the fireproof coating 5 can reduce damage to internal devices of the terminal equipment when the cover body 1 heats, and is beneficial to improving the safety of the terminal equipment during use.

As an example, when the coil assembly 3 protrudes from the first surface 11 of the cover body 1, the thickness of the fireproof coating layer 5 may be less than or equal to the height of the coil assembly 3 protruding from the first surface 11, so that it is possible to prevent the terminal device from becoming thicker due to the provision of the fireproof coating layer 5, which is advantageous in ensuring a slim design of the terminal device.

Fig. 13 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown in fig. 13, the battery cover assembly may further include a polyurethane layer 6 (which may also be referred to as a PU layer, and may also be referred to as a skin), where the polyurethane layer 6 is located on a side of the cover 1 remote from the first surface 11 and is connected to the cover 1, i.e., the polyurethane layer 6 is connected to the second surface 12 (not shown in fig. 13) of the cover 1. By adopting the scheme, the hand feeling of a user when touching the battery cover is improved, the sensory experience of the user is comfortable when the battery cover is used, and the terminal equipment has high-grade feeling.

Fig. 14 is a schematic structural view of a battery cover assembly according to an embodiment of the present application. As shown in fig. 14, the battery cover assembly may further include a cover back adhesive layer 7, where the cover back adhesive layer 7 is located between the cover 1 and the polyurethane layer 6 and is respectively attached to the cover 1 and the polyurethane layer 6, and the cover 1 and the polyurethane layer 6 are adhered by the cover back adhesive layer 7. In some examples, the cover backsize layer 7 may be double sided adhesive to ensure the robustness between the polyurethane layer 6 and the cover 1.

Fig. 15 is a schematic structural diagram of a coil assembly according to an embodiment of the present application. As shown in fig. 15, the coil assembly 3 may include a wireless charging coil 31, a near field communication coil 32, and a connector 33. As an example, the wireless charging coil 31 and the near field communication coil 32 may be fixed on the same carrier, and the wireless charging coil 31 may be arranged around the near field communication coil 32. The wireless charging coil 31 and the near field communication coil 32 are respectively and electrically connected with a connector 33, and the connector 33 is used for being connected with a main board in the terminal equipment and realizing the function of wireless charging and the function of near field communication (Near Field Communication, NFC).

In the solution provided in the embodiment of the present application, the battery cover assembly includes a cover body 1, a rigid support member 2, and a coil assembly 3. The first surface 11 of the cover 1 has a receiving portion 111, the rigid support member 2 is located in the receiving portion 111 and connected to the cover 1, and the coil assembly 3 is located on the same side of the rigid support member 2 as the first surface 11 and connected to the rigid support member 2. With this solution, since the rigid support 2 has a higher rigidity than the cover 1, the rigid support 2 is smaller than the thickness required by the cover 1 under the same rigidity requirement, and therefore, the thickness of the terminal device is advantageously reduced. Moreover, under the condition that the rigid support member 2 meets the rigidity requirement of the coil assembly 3, the cover body 1 can be integrally made thinner, so that the thickness of the whole machine is reduced, and the light and thin design of the terminal equipment is improved.

Based on the same technical conception, the embodiment of the application also provides terminal equipment such as a smart phone, a tablet personal computer and the like. Fig. 16 is a schematic structural diagram of a terminal device provided in an embodiment of the present application. As shown in fig. 16, the terminal device may include a middle frame 01, a main board 02, a battery 03, and any of the battery cover assemblies 04 provided in the embodiments of the present application. The main board 02 and the battery 03 are both positioned in the middle frame 01 and are respectively connected with the middle frame 01, the main board 02 is electrically connected with the battery 03, the battery cover assembly 04 is connected with the middle frame 01, and the coil assembly 3 of the battery cover assembly 04 is electrically connected with the main board 02. By adopting the scheme, the terminal equipment can have the functions of wireless charging and near field communication and simultaneously has a light and thin size design.

Optionally, the terminal device may further include a display screen, where the display screen is located on a side of the middle frame 01 away from the battery cover assembly 04, and is connected to the middle frame 01 and electrically connected to the main board 02. The terminal device may also include a speaker, a vibration motor, a camera, etc., without any limitation herein.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the utility model, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the utility model.

Claims (13)

1. A battery cover assembly, the battery cover assembly comprising: a cover body (1), a rigid support (2) and a coil assembly (3);

the cover (1) has opposite first (11) and second (12) surfaces, the first surface (11) having a receptacle (111);

the rigid support (2) is positioned in the accommodating part (111) and is connected with the cover body (1);

the coil assembly (3) is located on a side of the rigid support (2) remote from the second surface (12) and is connected to the rigid support (2).

2. Battery cover assembly according to claim 1, characterized in that the receiving portion (111) extends through the cover body (1), the surface of the rigid support (2) facing away from the coil assembly (3) being flush with the second surface (12).

3. Battery cover assembly according to claim 1 or 2, characterized in that the coil assembly (3) is detachably connected to the rigid support (2).

4. A battery cover assembly according to claim 3, wherein the battery cover assembly further comprises at least one limit stop (11A);

the limiting part (11A) is positioned on the first surface (11), is positioned on at least one side of the accommodating part (111), is connected with the cover body (1), and is at least partially positioned in the accommodating part (111) when the limiting part (11A) is projected on the first surface (11);

the rigid support piece (2) and the coil assembly piece (3) are both positioned on one surface of the limiting part (11A) close to the cover body (1).

5. A battery cover assembly according to claim 3, wherein the rigid support (2) comprises a support body (21) and at least one connection (22);

the connecting part (22) is positioned on at least one side of the supporting piece body (21) and is connected with the supporting piece body (21);

a supporting chute (22A) is formed between the connecting part (22) and the supporting piece body (21), and the coil assembly (3) is at least partially positioned in the supporting chute (22A).

6. The battery cover assembly according to claim 1 or 2, wherein the cover body (1) is provided with a plurality of limit buckles (111A), the limit buckles (111A) are located in the containing part (111) and are connected with the cover body (1), and the limit buckles (111A) are clamped with the rigid support (2).

7. The battery cover assembly according to claim 1, wherein the cover body (1) includes: a cover body (13), a first bending part (14), and a second bending part (15);

the receptacle (111) is located on the first surface (11);

the first bending part (14) and the second bending part (15) are respectively located on two opposite sides of the cover body (13) and are respectively connected with the cover body (13), and the first bending part (14) and the second bending part (15) are respectively bent towards the first surface (11) corresponding to the cover body (13).

8. The battery cover assembly according to claim 1, further comprising a coil backing layer (4), wherein the coil assembly (3) and the cover body (1) are bonded by the coil backing layer (4).

9. The battery cover assembly according to claim 1, further comprising a layer of fire-retardant coating (5), the layer of fire-retardant coating (5) being located on the first surface (11) and the layer of fire-retardant coating (5) being located outside the receiving portion (111).

10. The battery cover assembly according to claim 1, further comprising a polyurethane layer (6), wherein the polyurethane layer (6) is located on a side of the cover (1) remote from the first surface (11) and is connected to the cover (1).

11. The battery cover assembly according to claim 10, further comprising a cover backsize layer (7), wherein the cover (1) and the polyurethane layer (6) are bonded by the cover backsize layer (7).

12. The battery cover assembly according to claim 1, wherein the coil assembly (3) comprises a wireless charging coil (31), a near field communication coil (32), and a connector (33), the wireless charging coil (31) being arranged around the near field communication coil (32), the wireless charging coil (31), the near field communication coil (32) being electrically connected with the connector (33), respectively.

13. A terminal device, characterized in that it comprises a central frame (01), a main board (02), a battery (03) and a battery cover assembly (04) according to any one of claims 1-12;

the main board (02) and the battery (03) are located in the middle frame (01) and are respectively connected with the middle frame (01), the main board (02) is electrically connected with the battery (03), the battery cover assembly (04) is connected with the middle frame (01), and the coil assembly (3) of the battery cover assembly (04) is electrically connected with the main board (02).

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