Power supply circuit and system of intelligent door lock and door with intelligent door lock system

Abstract

The utility model discloses a power supply circuit and system of an intelligent door lock and a door with an intelligent door lock system, which relate to the technical field of intelligent door locks and comprise a storage battery power supply branch and a wireless charging power supply branch. The storage battery power supply branch circuit is connected with the wireless charging power supply branch circuit in parallel, and the output end of the storage battery power supply branch circuit and the output end of the wireless charging power supply branch circuit are used for being electrically connected to an intelligent door lock. According to the intelligent door lock, the wireless charging power supply branch and the storage battery power supply branch are provided, the intelligent door lock is powered through the two circuits, dependence on storage battery power supply is reduced, the charging frequency of a storage battery is reduced, the service life of the storage battery is prolonged, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent door locks, and in particular to a power supply circuit and system of an intelligent door lock and a door with the intelligent door lock system. Background Art

[0002] Smart door locks are improvements on traditional mechanical locks, which are more intelligent and simple in terms of user security, identification and management. Smart door locks are different from traditional mechanical locks. They are composite locks with security, convenience and advanced technology.

[0003] Smart door locks currently have added features such as cameras, display screens, and facial recognition. These features consume more power, causing lithium batteries to need to be charged frequently. Frequent charging will shorten the battery life and also give users a bad experience. Summary of the invention

[0004] The utility model provides a power supply circuit and system of an intelligent door lock and a door with an intelligent door lock system, the main purpose of which is to solve the problem that frequent charging shortens the service life of the battery and brings a bad user experience.

[0005] According to a first aspect of the utility model, a power supply circuit of an intelligent door lock is provided, which includes: a battery power supply branch and a wireless charging power supply branch;

[0006] The battery power supply branch is connected in parallel with the wireless charging power supply branch, and the output end of the battery power supply branch and the output end of the wireless charging power supply branch are used to be electrically connected to the smart door lock.

[0007] Optionally, the battery power supply branch includes: a battery, a first switch circuit and a first diode;

[0008] The output end of the battery is connected to the positive electrode of the first diode, the negative electrode of the first diode is electrically connected to the input end of the first switching circuit, and the output end of the first switching circuit is used to be electrically connected to the smart door lock; the first switching circuit includes a first enable pin, and the first enable pin controls the on and off of the battery power supply branch according to a high level signal or a low level signal in the power supply circuit.

[0009] Optionally, the wireless charging power supply branch includes: a wireless charging module, a second switch circuit and a second diode;

[0010] The output end of the wireless charging module is connected to the positive electrode of the second diode, the negative electrode of the second diode is electrically connected to the input end of the second switch circuit, and the output end of the second switch circuit is used to be electrically connected to the smart door lock; the second switch circuit includes a second enable pin, and the second enable pin controls the on and off of the wireless charging power supply branch according to a high level signal or a low level signal in the power supply circuit.

[0011] Optionally, the power supply circuit further includes: a first converter and a third diode;

[0012] The output end of the battery power supply branch and the output end of the wireless charging power supply branch are connected to the positive electrode of the third diode via the first converter, and the negative electrode of the third diode is used to be electrically connected to the smart door lock; wherein, the first converter is used to convert the voltage output by the wireless charging module or the battery to the rated voltage of the smart door lock.

[0013] Optionally, the power supply circuit further includes:

[0014] An emergency power supply circuit, the emergency power supply circuit comprising an emergency interface, a fourth diode and a fifth diode;

[0015] The anode of the fourth diode and the anode of the fifth diode are electrically connected to the output end of the emergency interface in parallel;

[0016] The cathode of the fourth diode is electrically connected to the smart door lock;

[0017] The cathode of the fifth diode is electrically connected to the battery charging circuit.

[0018] Optionally, the power supply circuit further includes:

[0019] A charging circuit, the charging circuit comprising a second converter, a current limiting circuit, a sixth diode and a battery charging circuit;

[0020] The wireless charging module is connected to the battery via the second converter, the current limiting circuit, the sixth diode and the battery charging circuit; wherein the second converter includes a third enable pin, and the third enable pin controls the on and off of the battery charging circuit according to a high level signal or a low level signal in the power supply circuit; the second converter is used to convert the voltage output by the wireless charging module to the rated voltage of the battery.

[0021] According to a second aspect of the present invention, a smart door lock system is provided, and the smart door lock system includes a power supply circuit of the smart door lock as described in the first aspect above.

[0022] Optionally, the smart door lock system further includes: a backpack motor;

[0023] The output end of the battery power supply branch and the output end of the wireless charging power supply branch are electrically connected to the backpack motor.

[0024] According to a third aspect of the utility model, a door is provided, wherein the door comprises the intelligent door lock system described in the second aspect.

[0025] The utility model provides a power supply circuit, system and door with a smart door lock system for a smart door lock, including: a battery power supply branch and a wireless charging power supply branch; the battery power supply branch is connected in parallel with the wireless charging power supply branch, and the output end of the battery power supply branch and the output end of the wireless charging power supply branch are used to be electrically connected to the smart door lock. Compared with related circuits, by providing a wireless charging power supply branch and a battery power supply branch, the smart door lock is powered by two circuits, which reduces the dependence on battery power supply, thereby reducing the number of battery charging times, extending the service life of the battery, and improving the user experience.

[0026] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present utility model.

[0028] Figure 1 A schematic diagram of a smart door lock power supply circuit provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0030] A smart door lock according to an embodiment of the present disclosure is described below with reference to the accompanying drawings.

[0031] Figure 1 For a schematic diagram of a power supply circuit of a smart door lock provided in an embodiment of the present disclosure, please refer to Figure 1 , including: a battery power supply branch 10 and a wireless charging power supply branch 20;

[0032] The battery power supply branch 10 is connected in parallel with the wireless charging power supply branch 20 , and the output end of the battery power supply branch 10 and the output end of the wireless charging power supply branch 20 are used to be electrically connected to the smart door lock 301 .

[0033] The smart door lock 301 is powered by a battery power supply branch 10 and a wireless charging power supply branch 20. When supplying power, it can be determined who supplies power based on an algorithm or the voltage value between the battery power supply branch 10 and the wireless charging power supply branch 20. The specific embodiments of the present application do not limit this.

[0034] In some embodiments, the smart door lock 301 also needs to be grounded so that the power supply circuit of the smart door lock becomes a complete electrical circuit; this can be achieved by connecting a ground wire to the grounding wire of the building; specifically, the embodiments of the present application do not limit this.

[0035] The utility model provides a power supply circuit for a smart door lock, comprising: a battery power supply branch and a wireless charging power supply branch; the battery power supply branch is connected in parallel with the wireless charging power supply branch, and the output end of the battery power supply branch and the output end of the wireless charging power supply branch are used to be electrically connected to the smart door lock. Compared with related circuits, by providing a wireless charging power supply branch and a battery power supply branch, the smart door lock is powered by two circuits, which reduces the dependence on battery power supply, thereby reducing the number of battery charging times, extending the service life of the battery, and improving the user experience.

[0036] In some embodiments, please refer to Figure 1 , the battery power supply branch 10 comprises: a battery 101, a first switch circuit 102 and a first diode 103;

[0037] The output end of the battery 101 is connected to the positive electrode of the first diode 103, the negative electrode of the first diode 103 is electrically connected to the input end of the first switch circuit 102, and the output end of the first switch circuit 102 is used to be electrically connected to the smart door lock 301; the first switch circuit 102 includes a first enable pin, and the first enable pin controls the on and off of the battery power supply branch 10 according to a high level signal or a low level signal in the circuit.

[0038] In some embodiments, the battery 301 may be a lithium battery or other type of battery. The battery capacity and rated voltage may be selected according to actual conditions. For example, a lithium battery with a battery capacity of 5000Ah and a rated voltage of 7.4V may be selected. It should be noted that this description is only an exemplary description and is not a specific limitation on the parameters of a specific battery.

[0039] In some embodiments, please refer to Figure 1 , the wireless charging power supply branch 20 includes: a wireless charging module 201, a second switch circuit 202 and a second diode 203;

[0040] The output end of the wireless charging module 201 is connected to the positive electrode of the second diode 203, the negative electrode of the second diode 203 is electrically connected to the input end of the second switch circuit 202, and the output end of the second switch circuit 202 is used to be electrically connected to the smart door lock 301; the second switch circuit 202 includes a second enable pin, and the second enable pin controls the on and off of the wireless charging power supply branch 20 according to a high level signal or a low level signal in the circuit.

[0041] In some embodiments, the output voltage of the wireless charging module 201 cannot be set lower than the rated voltage of the battery 101, because the wireless charging module 201 needs to charge the battery 101. For example, the full-charge voltage of the battery is 8.4V, and the minimum voltage of the wireless charging module 201 can be set to 8.4V.

[0042] In some embodiments, when the output voltage of the battery 101 is higher than the output voltage of the wireless charging module 201, the enable pin of the first switch circuit 102 receives a high-level signal, thereby controlling the battery power supply branch to be turned on; the enable pin of the second switch circuit 202 receives a low-level signal, thereby controlling the wireless charging power supply branch 20 to be disconnected, and at this time, the battery 101 supplies power to the smart door lock 301; when the output voltage of the wireless charging module 201 is higher than the output voltage of the battery 101, the enable pin of the second switch circuit 202 receives a high-level signal, thereby controlling the wireless charging power supply branch 20 to be turned on, and the enable pin of the first switch circuit 102 receives a low-level signal, thereby controlling the battery power supply branch to be disconnected, and the wireless charging module 201 supplies power to the smart door lock 301.

[0043] In some embodiments, the output voltage of the wireless charging module 201 is greater than the voltage of the battery 101 when it is fully charged. Therefore, in daily use, the smart door lock 301 is powered by the wireless charging module 201. However, when the distance between the wireless charging receiver and the wireless charging transmitter is far, the output voltage of the wireless charging module 201 will be less than the output voltage of the battery 101. In some embodiments, the wireless charging transmitter can be set on the side of the door frame, on the ceiling or on the ground, and can be aligned with the wireless charging receiving module when the door is closed, that is, it is powered by the wireless charging module 201 when the door is closed, and by the battery 101 when the door is open. It should be noted that this narrative method is only an exemplary description and is not a specific limitation on the specific arrangement position.

[0044] In some embodiments, please refer to Figure 1, the smart door lock further includes: a first converter 302 and a third diode 303;

[0045] The output end of the battery power supply branch 10 and the output end of the wireless charging power supply branch 20 are connected to the positive electrode of the third diode 303 via the first converter 302, and the negative electrode of the third diode 303 is used to be electrically connected to the smart door lock 301; wherein, the first converter 302 is used to convert the voltage output by the wireless charging module 201 or the battery 101 to the rated voltage of the smart door lock 301

[0046] The input end of the first converter 302 is electrically connected to the output end of the first switch circuit 102 and the output end of the second switch circuit 202 , the output end of the first converter 302 is connected to the positive electrode of the third diode 303 , and the negative electrode of the third diode 303 is connected to the smart door lock 301 .

[0047] In some embodiments, the output of the battery 101 and the wireless charging module 201 are both greater than the rated voltage of the smart door lock 301. Therefore, before using the battery 101 or the wireless charging module 201 to power the smart door lock 301, the voltage output by the battery 101 and the wireless charging module 201 needs to be stepped down to the rated voltage of the smart door lock 301.

[0048] In some embodiments, the first converter may be a DC-DC converter or other DC converters. The embodiments of the present application do not limit the specific model of the first converter.

[0049] In some embodiments, please refer to Figure 1 , the smart door lock further includes: an emergency interface 304, a fourth diode 305 and a fifth diode 306;

[0050] The anode of the fourth diode 305 and the anode of the fifth diode 306 are electrically connected to the output end of the emergency interface 304 in parallel;

[0051] The cathode of the fourth diode 305 is electrically connected to the smart door lock 301;

[0052] A cathode of the fifth diode 306 is electrically connected to the battery charging circuit 404 .

[0053] In some embodiments, the smart door lock has more than one emergency interface 304 , which is used for enabling the user to power and charge the smart door lock through the emergency interface 304 when the wireless charging input 201 fails.

[0054] In some embodiments, please refer to Figure 1 , characterized in that the circuit further comprises:

[0055] A charging circuit 40, comprising a second converter 401, a current limiting circuit 402, a sixth diode 403 and a battery charging circuit 404;

[0056] The wireless charging module 201 is connected to the battery 101 via the second converter 401, the current limiting circuit 402, the sixth diode 403 and the battery charging circuit 404; wherein the second converter 401 includes a third enable pin, and the third enable pin controls the on and off of the battery charging circuit 40 according to a high level signal or a low level signal in the circuit; the second converter 401 is used to convert the voltage output by the wireless charging module 201 to the rated voltage of the battery 101.

[0057] The input end of the second converter 401 is electrically connected to the output end of the wireless charging module 201, and the output end is electrically connected to the input end of the current limiting circuit 402. The output end of the current limiting circuit 402 is connected to the positive electrode of the sixth diode 403, and the negative electrode of the sixth diode 403 is electrically connected to the input end of the battery charging circuit 404. The output end of the battery charging circuit 404 is electrically connected to the battery 101.

[0058] In some embodiments, when the battery 101 is low on power, it is also charged by the wireless charging module 201. Specifically, the charging voltage threshold of the battery 101 can be set according to the rated voltage of the smart door lock 301, which is not limited in the embodiments of the present application.

[0059] When the voltage of the battery 101 is less than a preset threshold, the enable pin receives a high level signal, the charging circuit is turned on, and the battery is charged. After the battery 101 is fully charged, the enable pin receives a low level signal and the charging circuit is disconnected.

[0060] According to an embodiment of the present disclosure, the present disclosure also proposes a smart door lock system, the smart door lock system further comprising: a backpack motor;

[0061] Please continue reading Figure 1 ,like Figure 1 As shown, the output end of the battery power supply branch 10 and the output end of the wireless charging power supply branch 20 are connected to the backpack motor 307.

[0062] The backpack motor 307 is responsible for driving the lock tongue to extend and retract, and its power supply is the same as that of the smart door lock 301, which will not be described in detail in the embodiment of the present application.

[0063] In some embodiments, similar to the grounding method of the smart door lock, the backpack motor also needs to be grounded. For specific implementation methods, please refer to the description of the above embodiments, and the embodiments of this application will not be described one by one here.

[0064] The various numerical numbers such as first and second involved in the present invention are only for the convenience of description and are not used to limit the scope of the embodiments of the present invention, nor do they indicate the order of precedence.

[0065] At least one in the present invention can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present invention. In the embodiments of the present invention, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0066] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0067] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A power supply circuit for a smart door lock, characterized in that: include: Battery power supply branch and wireless charging power supply branch; The battery power supply branch is connected in parallel with the wireless charging power supply branch, and the output end of the battery power supply branch and the output end of the wireless charging power supply branch are used to be electrically connected to the smart door lock; Wherein, the battery power supply branch includes: a battery, a first switch circuit and a first diode; The output end of the battery is connected to the positive electrode of the first diode, the negative electrode of the first diode is electrically connected to the input end of the first switching circuit, and the output end of the first switching circuit is used to be electrically connected to the smart door lock; the first switching circuit includes a first enable pin, and the first enable pin controls the on and off of the battery power supply branch according to a high level signal or a low level signal in the power supply circuit.

2. The power supply circuit according to claim 1, characterized in that: The wireless charging power supply branch includes: a wireless charging module, a second switch circuit and a second diode; The output end of the wireless charging module is connected to the positive electrode of the second diode, the negative electrode of the second diode is electrically connected to the input end of the second switch circuit, and the output end of the second switch circuit is used to be electrically connected to the smart door lock; the second switch circuit includes a second enable pin, and the second enable pin controls the on and off of the wireless charging power supply branch according to a high level signal or a low level signal in the power supply circuit.

3. The power supply circuit according to claim 1, characterized in that: The power supply circuit further includes: a first converter and a third diode; The output end of the battery power supply branch and the output end of the wireless charging power supply branch are connected to the positive electrode of the third diode via the first converter, and the negative electrode of the third diode is used to be electrically connected to the smart door lock; wherein, the first converter is used to convert the voltage output by the wireless charging module or the battery to the rated voltage of the smart door lock.

4. The power supply circuit according to claim 1, characterized in that: The power supply circuit further includes: An emergency power supply circuit, the emergency power supply circuit comprising an emergency interface, a fourth diode and a fifth diode; The anode of the fourth diode and the anode of the fifth diode are electrically connected to the output end of the emergency interface in parallel; The cathode of the fourth diode is electrically connected to the smart door lock; The cathode of the fifth diode is electrically connected to the battery charging circuit.

5. The power supply circuit according to any one of claims 1 to 4, characterized in that: The power supply circuit further includes: A charging circuit, the charging circuit comprising a second converter, a current limiting circuit, a sixth diode and a battery charging circuit; The wireless charging module is connected to the battery via the second converter, the current limiting circuit, the sixth diode and the battery charging circuit; wherein the second converter includes a third enable pin, and the third enable pin controls the on and off of the battery charging circuit according to a high level signal or a low level signal in the power supply circuit; the second converter is used to convert the voltage output by the wireless charging module to the rated voltage of the battery.

6. An intelligent door lock system, characterized in that: The smart door lock system includes a power supply circuit for the smart door lock as described in any one of claims 1-5.

7. The intelligent door lock system according to claim 6, characterized in that: The smart door lock system also includes: a backpack motor; The output end of the battery power supply branch and the output end of the wireless charging power supply branch are electrically connected to the backpack motor.

8. A door, characterized in that: The door includes the smart door lock system as described in claim 6 or 7.

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