CN217522616U - Power supply circuit and intelligent electrical apparatus - Google Patents
Power supply circuit and intelligent electrical apparatus Download PDFInfo
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- CN217522616U CN217522616U CN202221448632.0U CN202221448632U CN217522616U CN 217522616 U CN217522616 U CN 217522616U CN 202221448632 U CN202221448632 U CN 202221448632U CN 217522616 U CN217522616 U CN 217522616U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present disclosure provides a power supply circuit and an intelligent electrical appliance. Wherein, power supply circuit includes: the battery cell comprises a battery cell input end and a battery cell output end; the protection circuit comprises a first input end and a first output end, the first input end is connected with the output end of the battery cell, and the first output end is connected with the discharge interface; the charging circuit comprises a second input end, a second output end and a third input end, the second input end is connected with the charging interface, the second output end is connected with the input end of the battery cell, and the third input end is connected with the third output end of the protection circuit. According to the scheme, the protection circuit and the charging circuit are independently arranged, so that the energy consumption of the power supply circuit can be reduced when the charging circuit does not work, and the service life of the battery cell is prolonged. Meanwhile, under the condition that the protection circuit is used for protecting the battery cell in an overload mode, the charging circuit can be activated through the charging battery cell and can be quickly restored to the working state.
Description
Technical Field
The present disclosure relates to the field of power supply technologies, and in particular, to a power supply circuit and an intelligent electrical appliance.
Background
Along with the rise of the intelligent home industry, the use of intelligent electrical appliances such as intelligent doors and intelligent windows is more and more popularized. Most of the electric control functions of the intelligent electric appliances need to be supplied by a power supply circuit, so that the work life of the power supply circuit is ensured and the power consumption is reduced.
SUMMERY OF THE UTILITY MODEL
The present disclosure provides a power supply circuit and an intelligent electrical appliance.
According to an aspect of the present disclosure, there is provided a power supply circuit including:
the battery cell comprises a battery cell input end and a battery cell output end;
the protection circuit comprises a first input end and a first output end, the first input end is connected with the output end of the battery cell, the first output end is connected with the discharge interface, and the protection circuit is used for performing overcurrent protection on the battery cell;
and the charging circuit comprises a second input end, a second output end and a third input end, the second input end is connected with the charging interface, the second output end is connected with the input end of the battery cell, the third input end is connected with a third output end of the protection circuit, and the charging circuit is used for charging the battery cell and activating the protection circuit.
In one embodiment, the power supply circuit further comprises:
and the PD charging protocol circuit is connected with the second input end of the charging circuit and is used for increasing the voltage of the second output end of the charging circuit.
In one embodiment, the cell is a high-rate battery cell.
In one embodiment, the current input by the second input terminal of the charging circuit is smaller than the current output by the first output terminal of the protection circuit.
According to another aspect of the present disclosure, there is provided a smart appliance including:
an electronic device;
in the power supply circuit of any embodiment, the charging interface of the power supply circuit is used for being connected with the commercial power end, and the discharging interface of the power supply circuit is connected with the electronic equipment and used for supplying power to the electronic equipment.
In one embodiment, the smart appliance includes a smart door, a smart window, a sweeper, and a vacuum cleaner.
In one embodiment, the intelligent electrical appliance is an intelligent door, the intelligent door comprises a door frame and a door plate which are connected with each other, the electronic equipment of the intelligent door at least comprises an intelligent door lock, and the intelligent door lock and the power circuit are arranged on the door plate; and the discharging interface of the power supply circuit is connected with the intelligent door lock.
In one embodiment, the electronic device of the smart door further comprises a camera, and the discharging interface of the power circuit is connected with the camera.
In one embodiment, the electronic device of the intelligent door further comprises an alarm, and the discharge interface of the power circuit is connected with the alarm.
According to the technology disclosed by the invention, the protection circuit and the charging circuit are independently arranged, so that the energy consumption of the power supply circuit can be reduced when the charging circuit does not work, and the service life of the battery cell is prolonged. Meanwhile, under the condition that the protection circuit is used for protecting the battery cell in an overload mode, the charging circuit can be activated through the charging battery cell and can be quickly restored to the working state.
It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the disclosure, nor is it intended to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
FIG. 1 shows a schematic diagram of a power supply circuit according to an embodiment of the disclosure;
FIG. 2 shows a schematic diagram of a power supply circuit according to another embodiment of the present disclosure;
fig. 3 shows a schematic structural diagram of a charging circuit according to an embodiment of the present disclosure;
FIG. 4 shows a schematic structural diagram of a protection circuit according to an embodiment of the present disclosure;
fig. 5 shows a schematic structural diagram of a PD charging protocol circuit according to an embodiment of the present disclosure;
FIG. 6 shows a voltage variation schematic of a protection circuit according to an embodiment of the disclosure;
fig. 7 shows a schematic structural diagram of a smart appliance according to an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The embodiment of the present disclosure provides a power supply circuit 100, as shown in fig. 1, the power supply circuit includes a battery cell 1, a protection circuit 2, and a charging circuit 3.
The battery cell 1 comprises a battery cell 1 input end and a battery cell 1 output end. The input end of the battery cell 1 is used for charging the battery cell 1, and the output end of the battery cell 1 is used for outputting the electric quantity of the battery cell 1 to supply power for other electronic equipment. The battery cell 1 may adopt any structure of the battery cell 1 in the prior art, and is not specifically limited herein. For example, the battery cell 1 may select a battery cell 1 with a large capacity, a battery cell 1 capable of outputting a large current, and the like according to usage requirements.
The protection circuit 2 includes a first input terminal and a first output terminal. The first input end is connected with the output end of the battery cell 1, and the first output end is connected with the discharging interface 4. The protection circuit 2 is configured to determine whether the current is overloaded according to the current output by the output end of the battery cell 1 and received by the first input end, and perform overcurrent protection on the battery cell 1 under the condition that the current output by the battery cell 1 is overloaded. The discharging interface 4 is used for being connected with electronic equipment, so that electric energy of the battery cell 1 is transmitted to the electronic equipment, and power is supplied to the electronic equipment. The protection circuit 2 may adopt any protection circuit structure in the prior art, and is not specifically limited herein as long as it can perform overcurrent protection on the battery cell 1.
The charging circuit 3 comprises a second input terminal, a second output terminal and a third input terminal. The second input end is connected with the charging interface 5, the second output end is connected with the input end of the battery cell 1, the third input end is connected with the third output end of the protection circuit 2, and the charging circuit 3 is used for charging the battery cell 1. And the charging circuit 3 is also used to activate the protection circuit 2. The charging interface 5 is used for being connected with a mains supply end, and the second output end is used for conveying the mains supply input by the second input end to the battery cell 1 so as to charge the battery cell 1. The third input end is used for receiving an overcurrent protection signal output by the third output end of the protection circuit 2, the charging circuit 3 continues to charge the battery cell 1 under the condition that the overcurrent protection signal is received, and when the output end of the battery cell 1 wants to input current to the first input end of the protection circuit 2, the protection circuit 2 which is originally in the overcurrent protection state is reactivated to restore the working state. The charging circuit 3 may adopt any charging circuit structure in the prior art, which is not specifically limited herein as long as it can charge the electric core 1. The charging interface 5 can be directly connected with the commercial power end or connected with the commercial power end through an adapter.
According to the scheme of the embodiment of the disclosure, because the charging circuit 3 is arranged between the charging interface 5 and the battery cell 1, and the protection circuit 2 is arranged between the battery cell 1 and the discharging interface 4, the protection circuit 2 and the charging circuit 3 can be independently arranged and independently operated, so that the situation that when one circuit is in a working state and the other circuit is in a standby state, the standby circuit still generates energy consumption is avoided, and the overall energy consumption of the power circuit 100 is effectively reduced. Further, since the overall energy consumption of the power supply circuit 100 is reduced, the service life and the standby time of the battery cell 1 are significantly prolonged, and the performance of the battery cell 1 is improved. In addition, the charging circuit 3 can receive the overcurrent protection signal of the protection circuit 2, so that the charging circuit 3 can activate the protection circuit 2 through the charging electric core 1 under the condition that the protection circuit 2 overloads the protection electric core 1, so that the protection circuit 2 is quickly restored to the working state.
In one embodiment, the third input terminal and the second input terminal of the charging circuit 3 may be the same input terminal. The third output terminal of the protection circuit 2 and the first output terminal of the protection circuit 2 may be the same output terminal.
In an embodiment, the charging circuit 3 employs a wide voltage input circuit, the charging circuit 3 can boost the voltage to charge the battery cell 1 when receiving the low-voltage input of the charging interface 5, and can reduce the voltage to charge the battery cell 1 when receiving the high-voltage input of the charging interface 5, so that the charging circuit 3 can adapt to various adapters connected with the charging interface 5.
In one example, the charging circuit 3 may employ a BQ25723 buck-boost battery charging controller, with the particular charging circuit 3 shown in fig. 3. It should be noted that the structure of the charging circuit 3 in this example is merely for illustration, and is not particularly limited. The power supply circuit 100 of any embodiment of the present disclosure may adopt charging circuits of other structures, but is not limited thereto.
In one embodiment, the voltage input to the second input terminal of the charging circuit 3 is 5-15VDC (Direct Current voltage). The voltage at the first output of the protection circuit 2 is 6-8.4 VDC.
In one embodiment, the current input by the second input terminal of the charging circuit 3 is smaller than the current output by the first output terminal of the protection circuit 2. Therefore, the power supply circuit 100 can receive the input of a small current to charge the battery cell 1, and meanwhile, the battery cell 1 can output a large current.
In one example, the power supply circuit 100 may be understood as a battery structure, and the battery cell 1 is an energy storage portion of the battery structure.
In one embodiment, the battery cell 1 may be a battery cell 1 of a high rate battery. The high rate battery may be a lithium ion rechargeable battery. It mainly relies on lithium ions moving between the positive and negative electrodes to operate. During charging and discharging, Li + is inserted and extracted back and forth between the two electrodes: during battery charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. The high-rate battery can be selected according to the requirement, and the output large current at least can reach the large-current motor drive. For example, an INR18650-20S size battery may be used.
In one embodiment, the protection circuit 2 may employ a protection circuit 2 including a protection chip BQ 2973. A specific protection circuit 2 is shown in fig. 4. The first input end (+) and the first input end (-) are connected with the battery core 1, the first output end (+) and the first output end (-) are connected with the discharging interface 4, and the third output end is connected with the third input end of the charging circuit 3. When the electric core 1 inputs current to the first input end (+) and the first input end (-) of the protection circuit 2 through the output end of the electric core 1, the current has a voltage difference when passing through the two MOS tubes of the CHG and the DSG of the protection circuit 2, the protection is triggered through the internal comparator, and once the current exceeds a threshold value, the current is turned off to protect the electric core 1.
In an embodiment, the Power circuit 100 further includes a PD (Power Delivery) charging protocol circuit 6, the PD charging protocol circuit 6 is connected to the second input end of the charging circuit 3, and the PD charging protocol circuit 6 is configured to increase the voltage of the second output end of the charging circuit 3, so as to implement a function of fast charging the battery cell 1 and reduce the charging duration of the battery cell 1. Besides adapting to the basic 5V voltage, the PD charging protocol circuit 6 can output different voltages through the PD charging protocol, thereby achieving the purpose of quick charging. For example, voltages of 9V, 12V, 15V and 20V are selected. The PD charging protocol circuit 6 may adopt any PD charging protocol circuit structure in the prior art, and is not specifically limited herein as long as the rapid charging of the battery cell 1 can be achieved.
In one example, the PD charging protocol circuit 6 may employ a PD charging protocol circuit that includes a CH224K chip. A specific PD charging protocol circuit 6 is shown in fig. 5.
In one example, as shown in fig. 6, a voltage variation when the protection circuit 2 operates is shown. Wherein BAT represents the positive voltage of the battery cell 1, VSS represents the negative voltage of the battery cell 1, PACK-represents the negative voltage output by the power circuit 100, Vscc represents the output protection trigger voltage, Vocd represents the output recovery voltage, and V-represents the voltage difference generated by the output current passing through the two MOS tubes of the protection circuit 2. It can be seen from fig. 6 that as the current changes, DOUT changes accordingly and COUT remains unchanged.
According to another aspect of the present disclosure, there is provided a smart appliance including an electronic device and the power supply circuit 100 of any of the above embodiments. The charging interface 5 of the power circuit 100 is used for being connected with a mains supply end, and the discharging interface 4 of the power circuit 100 is connected with the electronic equipment and used for supplying power to the electronic equipment.
The electronic equipment can be equipment which is required to realize specific functions on the intelligent electric appliance through power supply. For example, the electronic device may be a sensor, a camera, a processor, an intelligent door lock, a motor, etc., and is not particularly limited herein.
In an embodiment, the smart electrical appliance includes a smart door, a smart window, a sweeper, a vacuum cleaner, and the like, which are not specifically limited herein, and the electrical appliance requiring the power circuit can be understood as the smart electrical appliance according to the embodiment of the present disclosure.
In one embodiment, as shown in fig. 7, the smart appliance is a smart door 200, the smart door 200 includes a door frame 10 and a door panel 20 connected to each other, the electronic device of the smart door includes at least a smart door lock 30, and the smart door lock 30 and the power circuit 100 are disposed on the door panel 20. The discharging interface 4 of the power circuit 100 is connected to the intelligent door lock 30. The charging interface 5 of the power circuit 100 is connected to an external mains terminal. The intelligent door lock 30 may adopt any door lock structure, which is not limited herein, for example, an intelligent door lock having functions of fingerprint unlocking, face recognition, key unlocking, and the like.
In one embodiment, the electronic device of the smart door 200 further includes a camera, and the discharging interface 4 of the power circuit 100 is connected to the camera.
In one embodiment, the electronic device of the smart door 200 further includes an alarm, and the discharging interface 4 of the power circuit 100 is connected to the alarm.
In the description of the present specification, 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," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present disclosure.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. 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. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The above disclosure provides many different embodiments or examples for implementing different features of the disclosure. In order to simplify the disclosure of the present disclosure, specific example components and arrangements are described above. Of course, they are merely examples and are not intended to limit the present disclosure. Moreover, the present disclosure may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (9)
1. A power supply circuit, comprising:
the battery cell comprises a battery cell input end and a battery cell output end;
the protection circuit comprises a first input end and a first output end, the first input end is connected with the output end of the battery cell, the first output end is connected with the discharge interface, and the protection circuit is used for performing overcurrent protection on the battery cell;
the charging circuit comprises a second input end, a second output end and a third input end, the second input end is connected with the charging interface, the second output end is connected with the input end of the battery cell, the third input end is connected with the third output end of the protection circuit, and the charging circuit is used for charging the battery cell and activating the protection circuit.
2. The power supply circuit of claim 1, further comprising:
a PD charging protocol circuit connected to the second input of the charging circuit, the PD charging protocol circuit configured to increase a voltage of the second output of the charging circuit.
3. The power supply circuit of claim 1, wherein the cells are cells of a high rate battery.
4. The power supply circuit of claim 1, wherein the current input by the second input terminal of the charging circuit is smaller than the current output by the first output terminal of the protection circuit.
5. An intelligent appliance, comprising:
an electronic device;
the power supply circuit of any one of claims 1 to 4, wherein the charging interface of the power supply circuit is configured to be connected to a mains supply terminal, and the discharging interface of the power supply circuit is connected to the electronic device and configured to supply power to the electronic device.
6. The smart appliance of claim 5, wherein the smart appliance comprises a smart door, a smart window, a sweeper, and a vacuum cleaner.
7. The intelligent electrical appliance according to claim 5, wherein the intelligent electrical appliance is an intelligent door, the intelligent door comprises a door frame and a door panel which are connected with each other, the electronic device of the intelligent door at least comprises an intelligent door lock, and the intelligent door lock and the power circuit are arranged on the door panel; the discharging interface of the power supply circuit is connected with the intelligent door lock.
8. The intelligent electrical appliance according to claim 7, wherein the electronic device of the intelligent door further comprises a camera, and the discharge interface of the power circuit is connected with the camera.
9. The intelligent electrical appliance according to claim 7, wherein the electronic device of the intelligent door further comprises an alarm, and the discharge interface of the power circuit is connected with the alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221448632.0U CN217522616U (en) | 2022-06-10 | 2022-06-10 | Power supply circuit and intelligent electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221448632.0U CN217522616U (en) | 2022-06-10 | 2022-06-10 | Power supply circuit and intelligent electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217522616U true CN217522616U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221448632.0U Active CN217522616U (en) | 2022-06-10 | 2022-06-10 | Power supply circuit and intelligent electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217522616U (en) |
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2022
- 2022-06-10 CN CN202221448632.0U patent/CN217522616U/en active Active
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