CN218070194U

CN218070194U - Antenna and communication equipment

Info

Publication number: CN218070194U
Application number: CN202222701220.XU
Authority: CN
Inventors: 陈家林; 龙佳
Original assignee: Quectel Wireless Solutions Co Ltd
Current assignee: Quectel Wireless Solutions Co Ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-16
Anticipated expiration: 2032-10-13

Abstract

The application relates to an antenna and communication equipment, wherein, the antenna includes: the shell is provided with a through hole; an antenna assembly disposed within the housing; and the radio frequency wiring harness assembly is arranged in the shell, one end of the radio frequency wiring harness assembly is connected with the antenna assembly, and the other end of the radio frequency wiring harness assembly penetrates through the through hole and extends out of the shell. This application is through being in the same place first antenna, second antenna, third antenna integration, not only can shorten the size of antenna, can also promote the installation convenience, promotes the performance of antenna. The communication device includes a body and an antenna. The antenna structure of this application can install on the metal casing body of BMS battery, can effectually avoid the inside electromagnetic interference of battery, promotes the antenna performance.

Description

Antenna and communication equipment

Technical Field

The application relates to the technical field of communication, in particular to an antenna and communication equipment.

Background

The Battery of the new energy electric vehicle BMS (Battery Management System) needs to perform various signal interactions with the outside, including signals such as bluetooth BT (Blue Tooth), cellular 4G, positioning GPS, and the like, and these three signals all need to be specially designed with an antenna for signal transmission.

In terms of protection of the inside of the battery, the BMS battery in the market at present almost adopts a metal appearance, and the metal can have a serious negative effect on an antenna signal, thereby affecting the signal transmission speed, the transmission quality and the transmission stability of the battery. In addition, due to the complicated electromagnetic environment inside the battery, the antenna is susceptible to interference, which also results in unstable performance.

SUMMERY OF THE UTILITY MODEL

The antenna and the communication equipment are provided, and the antenna formed by integrating the antenna components is smaller in size, high in isolation and higher in stability.

The embodiment of the application is realized as follows:

a first aspect of an embodiment of the present application provides an antenna, including:

the shell is provided with a through hole;

an antenna assembly disposed within the housing; and

and the radio frequency wiring harness assembly is arranged in the shell, one end of the radio frequency wiring harness assembly is connected with the antenna assembly, and the other end of the radio frequency wiring harness assembly penetrates through the through hole and extends out of the shell.

In one embodiment, the antenna assembly includes:

the first antenna is arranged on the inner wall of the shell;

the second antenna is arranged on the inner wall of the shell and is connected with the first antenna through an FPC (flexible printed circuit) base material; and

and the third antenna is arranged at the bottom of the shell.

In one embodiment, the rf harness assembly includes:

a first radio frequency harness connected with the first antenna;

a second radio frequency harness connected to the second antenna;

a third radio frequency harness connected to the third antenna;

the first radio frequency wiring harness, the second radio frequency wiring harness and the third radio frequency wiring harness penetrate through the through hole and extend out of one end of the shell to be separated from one another.

In one embodiment, the housing includes:

the first shell is connected with the second shell;

the first antenna is arranged on the inner wall of the first shell;

the second antenna is arranged on the inner wall of the first shell;

the third antenna is arranged at the bottom of the first shell;

the through hole is arranged on the second shell.

In one embodiment, the antenna further includes:

the connecting piece is arranged at the through hole; and

and the fixing piece is used for fixing the connecting piece.

In one embodiment, the antenna further includes:

the conductive piece is arranged on the first antenna.

In one embodiment, the antenna further includes:

the aluminum foil layer is arranged in the shell and is provided with a through hole for the radio frequency wiring harness assembly to pass through; the conductive piece conducts the aluminum foil layer and the first antenna.

In one embodiment, a surface of the aluminum foil layer, which is attached to the inner wall surface of the housing, is an insulating surface.

In an embodiment, the first antenna is a short-range communication antenna, the second antenna is a mobile communication antenna, and the third antenna is a positioning antenna.

A second aspect of the embodiments of the present application provides a communication device, including a body and an antenna according to any one of the first aspect of the embodiments of the present application, where the antenna is disposed on the body.

Compared with the prior art, the beneficial effect of this application is: the antenna assembly 200 is integrated, and the formed antenna is smaller in size, high in isolation and high in stability.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

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

fig. 2 is a front view of an antenna provided in an embodiment of the present application;

fig. 3 is an exploded view of an antenna according to an embodiment of the present application;

fig. 4 is a schematic diagram illustrating an antenna assembly and rf harness assembly connection structure according to an embodiment of the present application;

FIG. 5 is a voltage standing wave ratio including a second antenna and isolation diagrams for the second antenna and a third antenna provided by an embodiment of the present application;

FIG. 6 is a graph of the voltage standing wave ratio of the first antenna and the isolation between the first antenna and the third antenna according to an embodiment of the present disclosure;

FIG. 7 is a voltage standing wave ratio diagram of a first antenna and an isolation diagram of the first antenna and a second antenna according to an embodiment of the present disclosure;

fig. 8 is a voltage standing wave ratio diagram of a third antenna and an isolation diagram of a second antenna and the third antenna according to an embodiment of the present application.

Icon:

1-a communication device; 11-an antenna; 100-a housing; 101-a first housing; 102-a second housing; 110-a via; 200-an antenna assembly; 210-a first antenna; 220-a second antenna; 230-a third antenna; 240-FPC base material; 300-a radio frequency harness assembly; 310-a first radio frequency beam; 320-a second radio frequency harness; 330-third radio frequency beam; 400-a connector; 500-a fixture; 600-a conductive member; 700-aluminum foil layer; 710-vias.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 3, an antenna 11 includes: housing 100, antenna assembly 200, radio frequency harness assembly 300; the casing 100 is provided with a through hole 110, the antenna assembly 200 is disposed in the casing 100, the radio frequency harness assembly 300 is disposed in the casing 100, one end of the radio frequency harness assembly 300 is connected with the antenna assembly 200, and the other end of the radio frequency harness assembly passes through the through hole 110 and extends out of the casing 100. Antenna assembly 200 is used for communication interaction and radio frequency harness assembly 300 is used for signal transmission.

Referring to fig. 3 and 4, the antenna assembly 200 includes: the first antenna 210, the second antenna 220, and the third antenna 230, wherein the first antenna 210 and the second antenna are all disposed on the inner wall of the housing 100, and the first antenna 210 and the second antenna 220 are connected by an FPC base material 240 (Flexible Printed Circuit, FPC); the third antenna 230 is disposed at the bottom of the housing 100. The FPC substrate 240 is a flexible circuit, takes polyester film or polyimide as a substrate, has high reliability, is excellent at Qu Naoxing, and is formed into a flexible circuit by embedding a circuit on a flexible light and thin plastic sheet to integrate and stack a large number of precise elements in a small space.

In an embodiment, the communication protocols of the first antenna 210, the second antenna 220, and the third antenna 230 may be the same or different. In different cases, the first antenna 210 may be a Near Field Communication antenna, such as a bluetooth antenna (BT) or a Near Field Communication (NFC), so as to implement Near Field Communication interaction; the second antenna 220 may be a mobile communication antenna, such as a 4G antenna and a 5G antenna, so as to implement mobile communication interaction; the third antenna 230 is a positioning antenna, such as a GPS antenna, and may be used to send an electrical signal from the device to position the GPS antenna at the indicated location. The antenna has the advantages that PIFA dipole antennas can be used for both the near field communication antenna and the mobile communication antenna, and the antenna is high in anti-interference capacity; the positioning antenna may use a ceramic antenna.

In this embodiment, by adjusting the spatial relative positions of the first antenna 210, the second antenna 220, and the third antenna 230, the correlation of the antenna 11 can be reduced, and the isolation of the antenna 11 can be improved.

In an embodiment, referring to fig. 4, a conductive member 600 is disposed on the first antenna 210. The conductive member 600 may be a conductive foam having a strong adhesive force, temperature resistance, water resistance, melting resistance, and plasticity resistance to the first antenna 210.

Referring to fig. 3 and 4, the rf harness assembly 300 includes: the antenna comprises a first radio frequency wire harness 310, a second radio frequency wire harness 320 and a third radio frequency wire harness 330, wherein the first radio frequency wire harness 310 is connected with a first antenna 210 through welding; the second rf harness 320 is connected to the second antenna 220 by soldering; the third rf beam 330 is connected to the third antenna 230 by soldering. The first rf beam 310, the second rf beam 320 and the third rf beam 330 are separated from each other by passing through the through hole 110 and extending out of the housing 100.

In one embodiment, referring to fig. 3, the housing 100 includes: the first shell 101 and the second shell 102, the first shell 101 is connected with the second shell 102, and the connection mode may be one of a snap connection and a welding. The first housing 101 may have a cylindrical structure. Specifically, the first antenna 210 and the second antenna 220 are both fixedly disposed on the inner wall of the first casing 101, and are connected to each other by the FPC base 240; the third antenna 230 is disposed at the bottom of the first casing 101, and has no connection with the first antenna 210 and the second antenna 220, and the through hole 110 is disposed on the second casing 102. As mentioned above, the first rf beam 310, the second rf beam 320 and the third rf beam 330 pass through the through hole 110 of the second housing 102 and extend out of the housing 100.

In an embodiment, referring to fig. 4, an aluminum foil layer 700 is disposed in the housing 100, the aluminum foil layer 700 may be disposed between the first housing 101 and the second housing 102, a via hole 710 for the rf wire harness assembly 300 to pass through is disposed on the aluminum foil layer 700, a surface of the aluminum foil layer 700 attached to an inner wall surface of the second housing 102 is an insulating surface, which may prevent external current from leaking through the antenna assembly 200, and the other surface of the aluminum foil layer 700 (i.e., a surface opposite to the second housing 102) is connected to the first antenna 210 through the conductive member 600.

In order to further fix the first rf beam 310, the second rf beam 320 and the third rf beam 330 extending out of the through hole 110, in an embodiment, a connecting member 400 is disposed at the through hole 110 and fixed by a fixing member 500. In this embodiment, the connecting element 400 is a screw with a thread structure, and the fixing element 500 is a hexagon nut, and the hexagon nut is provided with a thread structure matching with the screw. During the use, screw on the screw rod with the hexagon nut, fix the radio frequency pencil subassembly 300 that stretches out through-hole 110 department.

Referring to FIG. 5, it shows that the Voltage Standing Wave Ratio (VSWR) VSWR of the second antenna 220 is less than or equal to 9, and the isolation S21 of the second antenna 220 and the third antenna 230 is less than or equal to-14 dB.

Referring to FIG. 6, it shows that the Voltage Standing Wave Ratio (VSWR) VSWR of the first antenna 210 is less than or equal to 1.3, and the isolation S21 of the first antenna 210 and the third antenna 230 is less than or equal to-22 dB.

Referring to FIG. 7, it shows that the Voltage Standing Wave Ratio (VSWR) VSWR of the first antenna 210 is less than or equal to 1.3, and the isolation S21 of the first antenna 210 and the second antenna 220 is less than or equal to-14 dB.

Referring to FIG. 8, it shows that the Voltage Standing Wave Ratio (VSWR) VSWR of the third antenna 230 is less than or equal to 1.2, and the isolation S21 of the second antenna 220 and the third antenna 230 is less than or equal to-25 dB.

In fig. 5 to 8, the high isolation means that the correlation between the antennas 11 is small and the mutual interference is also small, so that the antenna 11 of the present application can have good performance even in a small-sized structure.

In summary, the first antenna 210, the second antenna 220, and the third antenna 230 are integrated together, so that the size of the antenna 11 can be reduced, and the installation convenience can be improved.

In addition, the embodiment of the present application provides a communication device 1. The communication device 1 comprises a body and an antenna 11 as described in any of the embodiments above. Above-mentioned 11 structures of antenna can be installed on the metal casing body of BMS battery, can effectually avoid the inside electromagnetic interference of battery, promote 11 performances of antenna. The communication device includes, but is not limited to, BMS battery devices and other devices capable of wireless communication.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna, comprising:

the shell is provided with a through hole;

an antenna assembly disposed within the housing; and

2. The antenna of claim 1, wherein the antenna assembly comprises:

the first antenna is arranged on the inner wall of the shell;

and the third antenna is arranged at the bottom of the shell.

3. The antenna of claim 2, wherein the radio frequency harness assembly comprises:

a first radio frequency harness connected with the first antenna;

a second radio frequency harness connected to the second antenna;

a third radio frequency beam connected to the third antenna;

4. The antenna of claim 2, wherein the housing comprises:

the first shell is connected with the second shell;

the first antenna is arranged on the inner wall of the first shell;

the second antenna is arranged on the inner wall of the first shell;

the third antenna is arranged at the bottom of the first shell;

the through hole is arranged on the second shell.

5. The antenna of claim 1, further comprising:

the connecting piece is arranged at the through hole; and

and the fixing piece is used for fixing the connecting piece.

6. The antenna of claim 2, further comprising:

and the conductive piece is arranged on the first antenna.

7. The antenna of claim 6, further comprising:

8. The antenna of claim 7, wherein the surface of the aluminum foil layer that is attached to the inner wall surface of the housing is an insulating surface.

9. The antenna of claim 2, wherein the first antenna is a short-range communication antenna, the second antenna is a mobile communication antenna, and the third antenna is a positioning antenna.

10. A communication device comprising a body and an antenna as claimed in any one of claims 1 to 9, the antenna being provided on the body.