CN113725603A

CN113725603A - Electronic device

Info

Publication number: CN113725603A
Application number: CN202111162402.8A
Authority: CN
Inventors: 邓伍华; 王明
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2021-11-30
Anticipated expiration: 2041-09-30

Abstract

The invention discloses an electronic device, which comprises: the power interface comprises a first connecting part and a second connecting part, the first connecting part is multiplexed as an antenna, and the first connecting part is connected with the low-pass/band-stop filter network; the radio frequency module is connected with the antenna through the current isolation element; and the power supply module is connected with the first connecting part through the low-pass/band-stop filter network or connected with the second connecting part. In the electronic equipment, the radio frequency module is connected with the antenna through the current isolation element, the antenna and the first connecting part of the power interface are connected with the low-pass/band-stop filter network together, and when an external power supply is required to supply power to the electronic equipment, the external direct-current power supply is blocked by the current isolation element and cannot enter a radio frequency signal path; the low-pass/band-stop filter network can block radio frequency signals from entering a direct-current power supply path, is high in resistance to the radio frequency signals, and has small influence on impedance matching of the radio frequency signals, so that high-cost devices such as a single-pole multi-throw switch device and the like are not required to be introduced.

Description

Electronic device

Technical Field

The present invention relates to electronic devices, and particularly to an electronic device.

Background

In some mobile wireless communication devices, the power supply path of some application scenario devices needs to multiplex an antenna path, that is, the antenna is not only used for transmitting and receiving wireless signals, but also used for inputting and outputting direct current power. In the related art, the existing solutions mainly employ a single-pole multi-throw switch to switch different antenna paths, so that the processing paths at the post-antenna stage are physically isolated by the switch. However, the single pole, multiple throw switching devices employed introduce rf signal losses and require high bandwidth and place high demands on DC current capability, high demands on the switching devices, and introduce additional device cost.

Disclosure of Invention

The embodiment of the invention provides electronic equipment.

An electronic device according to an embodiment of the present invention includes:

the power interface comprises a first connecting part and a second connecting part, the first connecting part is multiplexed as an antenna, and the first connecting part is connected with the low-pass/band-stop filter network;

the radio frequency module is connected with the antenna through a current isolation element;

and the power supply module is connected with the first connecting part through the low-pass/band-stop filter network, or is connected with the second connecting part.

In the electronic equipment, the radio frequency module is connected with the antenna through the current isolation element, the antenna and the first connecting part of the power interface are connected with the low-pass/band-stop filter network together, and when an external power supply is required to supply power to the electronic equipment, the external direct-current power supply is blocked by the current isolation element and cannot enter a radio frequency signal path; the low-pass/band-stop filter network can block radio frequency signals from entering a direct-current power supply path, is high in resistance to the radio frequency signals, and has small influence on impedance matching of the radio frequency signals, so that high-cost devices such as a single-pole multi-throw switch device and the like are not required to be introduced.

In some embodiments, the galvanic isolation element comprises a capacitor.

In some embodiments, the rf module includes an rf processing unit and a matching/bandpass filter network connected between the rf processing unit and the galvanic isolation element, the rf processing unit being connected to the power module.

In some embodiments, the rf module further includes a first guard circuit, the first guard circuit connecting the rf processing unit and the matching/bandpass filter network.

In some embodiments, the power module includes a power processing unit and a battery, which are connected to each other, the power processing unit is connected to the first connection portion through the low-pass/band-stop filter network, the second connection portion is connected to a ground, and the power processing unit is connected to the radio frequency module.

In some embodiments, the power supply module further comprises a unidirectional conductive element connected between the power supply processing unit and the lowpass/bandstop filter network, the unidirectional conductive element allowing current to flow from the lowpass/bandstop filter network to the power supply processing unit.

In some embodiments, the power module includes a power processing unit and a battery connected to each other, and the power processing unit is connected to the second connection portion.

In some embodiments, the power supply module further comprises a unidirectional conductive element connected between the low pass/band reject filter network and ground.

In some embodiments, the unidirectional conducting element comprises a diode.

In some embodiments, the electronic device further includes a second shield circuit connecting the first connection and the antenna.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a block schematic diagram of an electronic device of an embodiment of the invention;

FIG. 2 is a further block diagram of an electronic device of an embodiment of the invention;

FIG. 3 is another block diagram of an electronic device according to an embodiment of the invention;

FIG. 4 is a schematic diagram of yet another module of an electronic device in accordance with an embodiment of the invention;

FIG. 5 is a schematic diagram of yet another module of an electronic device in accordance with an embodiment of the invention;

FIG. 6 is a schematic diagram of yet another module of an electronic device in accordance with an embodiment of the invention;

FIG. 7 is a schematic diagram of yet another module of an electronic device in accordance with an embodiment of the invention;

FIG. 8 is a schematic diagram of yet another module of an electronic device in accordance with an embodiment of the invention;

fig. 9 is a schematic block diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 to fig. 2, an electronic device 100 according to an embodiment of the invention includes:

the power interface 12 comprises a first connection part 14 and a second connection part 16, the first connection part 14 is multiplexed into an antenna 18, and the first connection part 14 is connected with a low-pass/band-stop filter network 20;

a radio frequency module 22 connected to the antenna 18 through the galvanic isolation element 19;

and the power supply module 24, the power supply module 24 is connected with the first connecting part 14 through the low-pass/band-stop filter network 20, or the power supply module 24 is connected with the second connecting part 16.

In the electronic device 100, the radio frequency module 22 is connected to the antenna 18 through the galvanic isolation element 19, the antenna 18 and the first connection portion 14 of the power interface 12 are commonly connected to the low-pass/band-stop filter network 20, and when an external power supply is required to supply power to the electronic device 100, the external direct current power supply is blocked by the galvanic isolation element 19 and cannot enter a radio frequency signal path; the low-pass/band-stop filter network 20 can block radio frequency signals from entering a direct-current power supply path, has high resistance to the radio frequency signals, and has small influence on impedance matching of the radio frequency signals, so that high-cost devices such as a single-pole multi-throw switch device and the like are not required to be introduced.

Specifically, the electronic device 100 may be a mobile electronic device 100 and has a wireless communication function. In one embodiment, power module 24 may include a rechargeable battery 34, and power received through power interface 12 may charge battery 34, and an external charging cord may be plugged into power interface 12 when electronic device 100 is powered or charged. The power module 24 may also utilize the stored power of the battery 34 to power electrical components of the electronic device 100.

When the wireless communication function is used, the electronic device 100 may wirelessly communicate with an external device to realize transmission of data and instructions. For example, the external device may send a data acquisition request to the electronic device 100, and the electronic device 100 receives the acquisition request via the antenna 18 and sends the data acquired by itself to the external device.

Corresponding to a specific structure, a conductive part (e.g. a metal strip) may be disposed in the housing of the electronic device 100, and the conductive part may be used as the antenna 18 on the one hand and the first connection part 14 of the power interface 12 on the other hand. In the related art, two parallel metal strips are provided, one metal strip (a first metal strip) serves as an antenna, and the other metal strip (a second metal strip) serves as a connection portion of a power interface. In order to reduce the influence of the second metal strip on the antenna for receiving and transmitting signals, the two metal strips need to be far away from each other, so that the whole volume of the electronic equipment is increased, and the electronic equipment is not in line with the miniaturization requirement of the electronic equipment, particularly mobile and portable electronic equipment.

In the embodiment of the present invention, the connection part between the antenna 18 and the power source interface 12 can be realized by using one metal strip, the space required by arranging two metal strips and the distance space between the two metal strips are reduced, the miniaturization of the electronic device 100 is satisfied, and the appearance of the long electronic device 100 can be simplified.

In one example, the electronic device 100 may be a wireless temperature probe, which is generally elongated and may utilize the power interface 12 to draw power from the charging cord and store the power in the battery 34 of the power module 24. When the wireless temperature probe is used, the wireless temperature probe can be inserted into food to collect temperature data. The collected temperature data can be wirelessly transmitted to a controller of the cooking appliance via the antenna 18, so that the controller controls the cooking appliance to cook food.

The cooking appliances include, but are not limited to, microwave ovens, steam boxes, ovens (including electric ovens, microwave ovens, and micro-cooking and baking integrated machines), electric cookers, pressure cookers, and the like. Cooking device can be including the door body and cavity, and the door body rotationally connects one side of cavity, for example, the door body is connected on the left side of cavity front bezel, right side, forms the cooking device of side opening door type, and door body connection forms the cooking device of drop-down door type at the downside of cavity front bezel. The cavity is provided with a cavity for placing food and cooking food.

In one embodiment, the cooking appliance may be a micro-steamer. The micro-steaming and baking all-in-one machine can comprise a microwave source, an electric heating pipe and a steam generator. The microwave source may comprise a semiconductor microwave source or a magnetron, and in operation the microwave source feeds microwaves into the cavity to cook the food. The microwave energy fed into the cavity can be adjusted by adjusting the transmitting power of the semiconductor microwave source or adjusting the voltage of the magnetron.

The electric heating pipe can include upper heating pipe and lower heating pipe, and the upper heating pipe sets up at the cavity top, and lower heating pipe sets up in the cavity bottom, and the during operation can select upper heating pipe and/or lower heating pipe to open and control when opening of upper heating pipe, lower heating pipe and realize heating power's adjustment.

Steam generator can be connected with the water tank, and the during operation utilizes the water pump to take out to steam generator inside with the water in the water tank, and steam generator during operation heats its inside water, makes water turn into vapor, sends into the cavity through the pipeline to heat food.

The micro-steaming and baking all-in-one machine can cook food placed in the cavity by using one or any combination of microwaves, hot air and water vapor. During the cooking process, the temperature of the food changes. That is to say, the micro-steaming and baking all-in-one machine can cook food by using microwaves alone, can also cook food by using an electric heating pipe alone, can also cook food by using water vapor alone, and can also cook food by using a combination of two or three of the three heating modes.

In one embodiment, the cooking appliance may be a microwave oven. The microwave oven may include a microwave source. The microwave source may comprise a semiconductor microwave source or a magnetron, and in operation the microwave source feeds microwaves into the cavity to cook the food. The microwave energy fed into the cavity can be adjusted by adjusting the transmitting power of the semiconductor microwave source or adjusting the voltage of the magnetron. In addition, the cavity is provided with an antenna, microwaves generated by the microwave source can be transmitted to the microwave antenna through the waveguide structure, and the microwaves are radiated into the cavity by the microwave antenna. During the feeding of the microwaves, the microwave antenna can be rotated so that the microwaves can be uniformly radiated into the cavity.

In one embodiment, the cooking appliance may be a steamer. The steam box may include a steam generator. Steam generator can be connected with the water tank, and the during operation utilizes the water pump to take out to steam generator inside with the water in the water tank, and steam generator during operation heats its inside water, makes water turn into vapor, sends into the cavity through the pipeline to heat food. Residual water in the cavity can be collected through the opening at the bottom of the cavity and flows back to the water tank or the waste water tank, so that a user can clean the cavity conveniently.

Further, the door body can be a multi-layer glass door body, such as a double-layer glass door body. One of the benefits of using a glass door body is that it is convenient for a user to observe the food conditions inside the cavity from the outside. In addition, the outer surface of the door body can be provided with a handle, so that a user can conveniently open and close the door. The cooking appliance also comprises a shell outside the cavity, the shell can protect electric parts and structural parts in the cooking appliance, and meanwhile, the damage to a user is also avoided.

The wireless temperature probe may be inserted into the food prior to cooking the food. Specifically, in one embodiment, the wireless temperature probe may be movably disposed within the cavity, and after the food is placed in the cavity, the wireless temperature probe is controlled to move and be inserted into the interior of the food. In one embodiment, the insertion of the wireless temperature probe into the interior of the food item may also be a manual operation, for example, the user inserts the wireless temperature probe into the interior of the food item after the food item is placed into the cavity.

It should be understood that the present invention is described above only by taking the electronic device 100 as a wireless temperature probe and its application in a cooking appliance as an example, however, the present invention is not limited thereto, and the electronic device 100 may also be other electronic devices 100 and corresponding application scenarios, and is not limited thereto in any particular way. The transmission of data is not limited to the transmission of temperature data, and other data, signals, parameters, states, and the like may be transmitted.

Referring to fig. 3, fig. 3 shows a circuit diagram of the low-pass/band-stop filter network 20, and the low-pass/band-stop filter network 20 may include an inductance-capacitance (LC) circuit.

In some embodiments, the galvanic isolation element 19 comprises a capacitor. Thus, the direct current can be effectively isolated.

Specifically, the capacitor can be used as a dc blocking capacitor, and the dc blocking capacitor blocks dc power and passes through a wireless rf signal.

In some embodiments, referring to fig. 1 and fig. 2, the rf module 22 includes an rf processing unit 26 and a matching/bandpass filtering network 28, the matching/bandpass filtering network 28 is connected between the rf processing unit 26 and the galvanic isolation element 19, and the rf processing unit 26 is connected to the power module 24. In this manner, the transmission and reception of radio frequency signals may be controlled by the radio frequency processing unit 26.

Specifically, the rf processing unit 26 may include related circuits and devices, and the rf processing unit 26 is used for processing the rf signal at the antenna 18 end, so as to receive external control commands or data, and transmit commands or sensing data of the electronic device 100 to an external device. In one embodiment, the external device may be a cooking appliance, the electronic device 100 may be a wireless temperature probe, the cooking appliance may send a collection instruction of temperature data to the wireless temperature probe, the wireless temperature probe receives the collection instruction through the antenna 18, the collection instruction is obtained after being processed by the radio frequency processing unit 26, and then the temperature data collected by the wireless temperature probe is modulated into a radio frequency signal and sent to the cooking appliance through the antenna 18.

The matching/bandpass filter network 28 functions as impedance matching and frequency selection for the rf signal, so that the rf signal can be accurately transmitted. In one embodiment, the matching/bandpass filter network 28 may include an LC circuit, with the selection principle being to consider 50 Ω impedance matching of the rf signal, and frequency selection of the bandpass filter rf signal frequency.

The rf processing unit 26 is connected to the power module 24, so that the power module 24 can supply power to the rf processing unit 26.

In some embodiments, please refer to fig. 4 and 5, the rf module 22 further includes a first guard circuit 30, wherein the first guard circuit 30 is connected to the rf processing unit 26 and the matching/bandpass filtering network 28. Thus, the radio frequency pin can be protected.

Specifically, the first protection circuit 30 can protect the voltage pulse interference or static electricity caused by the instant connection of the direct current, protect the rf pin, and prolong the service life of the rf module 22. In one embodiment, the first protection circuit 30 may include a transient suppression diode (TVS).

In some embodiments, please refer to fig. 1 and fig. 2, the power module 24 includes a power processing unit 32 and a battery 34 connected to each other, the power processing unit 32 is connected to the first connection portion 14 through the low-pass/band-stop filter network 20, the second connection portion 16 is connected to the ground, and the power processing unit 32 is connected to the radio frequency module 22. In this manner, the antenna 18 may be implemented to multiplex the positive poles of the power interface 12.

Specifically, in the present embodiment, the first connection portion 14 serves as a positive pole of the power interface 12, and the second connection portion 16 serves as a negative pole, when power is supplied or charged, the direct current enters the power processing unit 32 through the first connection portion 14 and the low-pass/band-stop filter network 20, and the power processing unit 32 is configured to supply power to the radio frequency module 22 and other electrical devices of the electronic device 100 and manage charging and discharging of the battery 34. In one example, the power processing unit 32 may include a BMS system and the battery 34 may be a rechargeable battery, such as a lithium battery.

In some embodiments, referring to fig. 6, the power module 24 further includes a one-way conducting element 36, the one-way conducting element 36 is connected between the power processing unit 32 and the low-pass/band-stop filter network 20, and the one-way conducting element 36 allows current to flow from the low-pass/band-stop filter network 20 to the power processing unit 32. In this manner, the network of antennas 18 is prevented from generating a dc bias.

Specifically, the unidirectional element 36 has the property of unidirectional current conduction, which prevents the network of antennas 18 from generating a dc bias.

In some embodiments, referring to fig. 2, the power module 24 includes a power processing unit 32 and a battery 34 connected to each other, and the power processing unit 32 is connected to the second connecting portion 16. In this manner, the antenna 18 may be implemented to multiplex the negative poles of the power interface 12.

Specifically, in the present embodiment, the first connection portion 14 serves as a negative electrode of the power interface 12, the second connection portion 16 serves as a positive electrode, and when power is supplied or charged, direct current enters the power processing unit 32 through the second connection portion 16, and the power processing unit 32 is configured to supply power to the rf module 22 and other electrical devices of the electronic device 100 and manage charging and discharging of the battery 34.

In some embodiments, referring to fig. 7, the power module 24 further includes a one-way conducting element 36, and the one-way conducting element 36 is connected between the low-pass/band-stop filter network 20 and the ground. In this manner, the network of antennas 18 is prevented from generating a dc bias.

In some embodiments, the unidirectional conducting element 36 comprises a diode. In this manner, the cost of the electronic device 100 may be reduced.

Specifically, the diode has a unidirectional conduction property, is low in cost and small in size, and meets the requirements of miniaturization and appearance of the electronic device 100.

In some embodiments, referring to fig. 8 and 9, the electronic device 100 further includes a second protection circuit 38, and the second protection circuit 38 is connected to the first connection portion 14 and the antenna 18. Thus, the connection portion is protected against voltage pulse interference or static electricity caused by the instant DC connection.

Specifically, the second protection circuit 38 can protect the first connection portion 14 from voltage pulse interference or static electricity caused by instant connection of the direct current, and prolong the service life of the first connection portion 14. Since the antenna 18 is multiplexed with the first connection portion 14, the protection requirement for the first connection portion 14 is higher, and therefore the second protection circuit 38 is disposed to effectively protect the first connection portion 14, thereby ensuring the wireless communication performance of the electronic device 100.

In summary, the electronic device 100, the antenna 18 network and the power supply network of the embodiment of the present invention share a path. When external power supply is required or the device battery 34 is charged, the external direct current power supply is blocked by the blocking element and cannot enter the radio frequency signal path; the low-pass/band-stop filter network 20 blocks radio-frequency signals from entering a direct-current power supply path, is high-resistance relative to the radio-frequency signals, has little influence on impedance matching of the radio-frequency signals, can meet the requirement of multiplexing of power supply and antenna 18 paths in a specific application scene, and does not need to increase an expensive high-bandwidth change-over switch under the condition of not reducing the radio-frequency performance.

In the description herein, references to the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein the galvanic isolation element comprises a capacitor.

3. The electronic device of claim 1, wherein the radio frequency module comprises a radio frequency processing unit and a matching/bandpass filter network, the matching/bandpass filter network being connected between the radio frequency processing unit and the galvanic isolation element, the radio frequency processing unit being connected to the power supply module.

4. The electronic device of claim 3, wherein the radio frequency module further comprises a first guard circuit, the first guard circuit connecting the radio frequency processing unit and the match/bandpass filter network.

5. The electronic device of claim 1, wherein the power module comprises a power processing unit and a battery, which are connected to each other, the power processing unit is connected to the first connection portion through the low-pass/band-stop filter network, the second connection portion is connected to a ground, and the power processing unit is connected to the radio frequency module.

6. The electronic device of claim 5, wherein the power module further comprises a unidirectional conductive element connected between the power processing unit and the lowpass/bandstop filter network, the unidirectional conductive element allowing current to flow from the lowpass/bandstop filter network to the power processing unit.

7. The electronic device according to claim 1, wherein the power supply module comprises a power supply processing unit and a battery which are connected with each other, and the power supply processing unit is connected with the second connecting part.

8. The electronic device of claim 7, wherein the power module further comprises a unidirectional conductive element connected between the lowpass/bandstop filter network and ground.

9. An electronic device as claimed in claim 6 or 8, characterized in that the unidirectionally conducting elements comprise diodes.

10. The electronic device of claim 1, further comprising a second guard circuit connecting the first connection and the antenna.