Electronic lock and multi-power supply system thereof

Abstract

An electronic lock and a multi-power supply system thereof are suitable for being used in cooperation with a mains supply and a battery module. The multi-power supply system comprises a commercial power supply module, a battery holder, a voltage measurement module for measuring the output voltage of the battery module, and a power supply control module. The power supply control module judges the type of the battery module according to the output voltage, converts commercial power into direct current to charge the battery module of the lithium battery type, and directly outputs electric power according to the type of the battery module or outputs electric power after voltage boosting or voltage reduction processing when the power supply is switched to the battery module for power supply. Through the design of the mains supply module, the battery holder, the voltage measurement module and the power supply control module of the multi-power supply system, various power supplies can be automatically switched and output to drive the lock body device, and the defects of an existing electronic lock can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic locks, in particular to an electronic lock and a multi-power supply system thereof. Background Art

[0002] Currently, most electronic locks rely on batteries as their power source. Some are designed to include a rechargeable battery and connect the lock to the mains electricity supply. This allows the rechargeable battery to be constantly charged via a charging circuit, ensuring that the rechargeable battery always has sufficient power to activate the various functions of the electronic lock. However, this single-power-source design can easily cause the electronic lock to malfunction due to mains power outages or battery malfunctions. Utility Model Content

[0003] Therefore, one of the objectives of the present invention is to provide a multi-power supply system for an electronic lock that can electrically connect and set up multiple power sources to overcome at least one disadvantage of the prior art.

[0004] Therefore, the present invention provides a multi-power supply system for an electronic lock, which is suitable for use with mains power and a battery module to power a lock device. The multi-power supply system includes:

[0005] a mains power supply module, converting the mains power into direct current of the voltage required for the operation of the lock device;

[0006] A battery holder for electrical connection and installation of the battery module;

[0007] a voltage measurement module electrically connected to the battery holder for measuring the output voltage of the battery module;

[0008] A power supply control module is electrically connected to the mains power supply module, the battery holder and the voltage measurement module, and is also electrically connected to the lock body device. The power supply control module includes a power supply control unit, a boost circuit unit, a buck circuit unit, and a charging circuit unit. The power supply control unit is used to analyze the output voltage and determine that the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V, and drive the charging circuit unit to convert the mains power into direct current to charge the lithium battery type battery module. The power supply control unit will first output the mains power supply module. The DC power generated by the block is used to power the lock body device. When the power supply control unit determines that the AC power supply module does not output the DC power normally, it will switch to the battery module connected to the battery holder for power supply, and will directly power the lock body device with the power of the battery module of the 6V battery type, or drive the boost circuit unit to boost the output voltage of the battery module of the lithium battery type to 6V to power the lock body device, or drive the buck circuit unit to buck the output voltage of the battery module of the battery type higher than 6V to 6V to power the lock body device.

[0009] Furthermore, it is suitable for use with multiple different types of battery modules, wherein the battery holder is used for electrical connection of the battery modules, and the power supply control unit analyzes the output voltage of each battery module to determine whether the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V. The power supply control module also has an output terminal for outputting power to drive the lock body device. When the power supply control unit determines that the mains power is off, it will first output the power of one of the battery modules connected to the battery holder for power supply, and drive the voltage measurement module to measure and obtain the terminal voltage of the output terminal. When the terminal voltage drops below 5V, the power supply control unit will switch to outputting the power of another battery module connected to the battery holder for power supply.

[0010] Furthermore, it also includes a warning module connected to the power supply control module by signal. When the power supply control unit outputs one of the battery modules connected to the battery holder for power supply, it will drive the warning module to issue a warning message when the current terminal voltage drops below 5V.

[0011] Another object of the present invention is to provide an electronic lock that can improve at least one disadvantage of the prior art.

[0012] Therefore, the present invention provides an electronic lock suitable for use with mains power and a battery module, comprising:

[0013] A lock device that can be driven to switch between a locked state and an unlocked state;

[0014] A multi-power supply system is electrically connected to the lock device and includes:

[0015] A mains power supply module converts the mains power into direct current of the voltage required for the operation of the lock device.

[0016] A battery holder for electrical connection and installation of the battery module,

[0017] a voltage measurement module electrically connected to the battery holder for measuring the output voltage of the battery module;

[0018] A power supply control module is electrically connected to the AC power supply module, the battery holder, and the voltage measurement module. The power supply control module includes a power supply control unit, a charging circuit unit, a boost circuit unit, and a buck circuit unit. The power supply control unit is used to analyze the output voltage and determine that the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V, and drive the charging circuit unit to convert the AC power into direct current to charge the lithium battery type battery module. The power supply control unit first outputs the direct current generated by the AC power supply module to power the lock body device. When the power supply control unit determines that the AC power supply module does not normally output the direct current, it switches to the battery module connected to the battery holder for power supply, directly powers the lock body device with the power of the 6V battery type battery module, or drives the boost circuit unit to boost the output voltage of the lithium battery type battery module to 6V to power the lock body device, or drives the buck circuit unit to buck the output voltage of the battery module higher than 6V to 6V to power the lock body device.

[0019] Furthermore, it is suitable for use with multiple different types of battery modules, wherein the battery holder is used for electrical connection of the battery modules, and the power supply control unit analyzes the output voltage of each battery module to determine whether the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V. The power supply control module also has an output terminal for outputting power to drive the lock body device. When the power supply control unit determines that the mains power is off, it will first output the power of one of the battery modules connected to the battery holder for power supply, and drive the voltage measurement module to measure and obtain the terminal voltage of the output terminal. When the terminal voltage drops below 5V, the power supply control unit will switch to outputting the power of another battery module connected to the battery holder for power supply.

[0020] Furthermore, the multi-power supply system also includes a warning module whose signal is connected to the power supply control module. When the power supply control unit outputs one of the battery modules connected to the battery holder for power supply, it will drive the warning module to issue a warning message when the current terminal voltage drops below 5V.

[0021] The utility model has the advantage that, through the design of the mains power supply module, the battery holder, the voltage measurement module, and the power control module of the multi-power supply system, multiple power sources can be electrically connected and automatically switched to output various power sources to drive the lock body device, which can completely improve the shortcomings of existing electronic locks that use a single power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a functional architecture diagram of an embodiment of the electronic lock of the present invention.

[0024] Explanation of the accompanying reference numerals: 3 lock body device; 4 multi-power supply system; 41 AC power supply module; 42 battery holder; 43 voltage measurement module; 44 power supply control module; 440 output terminal; 441 power supply control unit; 442 charging circuit unit; 443 boost circuit unit; 444 buck circuit unit; 45 warning module; 800 AC power; 900 battery module. DETAILED DESCRIPTION

[0025] See Figure 1 One embodiment of the electronic lock of the present invention is adapted for electrical connection to a mains power source 800 and can be used with multiple battery modules 900. The lock can obtain power for operation from the mains power source 800 or from one of the electrically connected battery modules 900. The battery modules 900 include a rechargeable lithium battery (output voltage 3.7V), a 6V battery module 900 comprised of multiple dry cell batteries connected in series and parallel with an output voltage of 6V, and a battery module 900 with an output voltage greater than 6V (e.g., an output voltage of 9V).

[0026] The electronic lock comprises a lock assembly 3 that can be driven to switch between locked and unlocked states, and a multi-power supply system 4 electrically connected to the lock assembly 3. The multi-power supply system 4 is used to connect to the mains power 800 and to accommodate the battery module 900. Since the lock assembly 3 is an existing component and comes in many different types, it is not the focus of this invention and will not be described in detail.

[0027] The multi-power supply system 4 includes a mains power supply module 41 for connecting to the mains power 800, a battery holder 42 for electrically connecting and mounting the battery module 900, a voltage measurement module 43, and a power control module 44. The mains power supply module 41 can convert the mains power 800 into direct current (DC) of the voltage required for the operation of the lock device 3, for example, 6V DC.

[0028] In this embodiment, the battery holder 42 can be used to simultaneously electrically connect and install the three types of battery modules 900 described above, or it can also be used to simultaneously electrically connect and install two different types of battery modules 900, or it can be used to install only one type of battery module 900. In practice, the battery holder 42 can be provided with three mounting portions (not shown), each of which can be used to electrically connect and install a specific type of battery module 900. However, in other embodiments of the present invention, each mounting portion can also be designed to be used to electrically connect and install any of the above types of battery modules 900.

[0029] The voltage measurement module 43 is electrically connected to the AC power supply module 41 and the battery holder 42 , and can be used to measure the DC power output by the AC power supply module 41 and the output voltage of each of the battery modules 900 electrically connected to the battery holder 42 .

[0030] The power supply control module 44 is electrically connected to the AC power supply module 41, the battery holder 42, and the voltage measurement module 43. The power supply control module 44 includes a power supply control unit 441, a charging circuit unit 442, a boost circuit unit 443, and a buck circuit unit 444. The power supply control module 44 also has an output terminal 440 electrically connected to the lock device 3 and configured to output power to drive the lock device 3.

[0031] The power supply control unit 441 analyzes the output voltage of each battery module 900 measured by the voltage measurement module 43 and determines whether the battery module 900 is a lithium battery type, a 6V battery type, or a battery type with a voltage higher than 6V. Furthermore, when the power supply control unit 441 determines that one of the battery modules 900 is a lithium battery type, it activates the charging circuit unit 442 to convert the AC power 800 into direct current (DC) to charge the lithium battery module 900.

[0032] The power supply control unit 441 has a built-in mains power supply mode and a battery power supply mode. When the power supply control unit 441 determines that the mains power supply module 41 normally outputs DC power of a predetermined voltage, that is, when the mains power 800 is normally powered, it will give priority to switching to start the mains power supply mode. When the power supply control unit 441 determines that the mains power supply module 41 does not output the predetermined DC power, for example, when it determines that the output voltage of the mains power supply module 41 is equal to zero, it means that the mains power 800 is powered off or the mains power supply module 41 is abnormal, and it will switch to start the battery power supply mode. However, as long as the mains power 800 resumes normal power supply and the mains power supply module 41 normally outputs DC power of a predetermined voltage, the power supply control unit 441 will switch to the mains power supply mode.

[0033] When the power supply control unit 441 activates the AC power supply mode, it receives the DC power generated by the AC power supply module 41 and supplies power to the lock device 3 via the output terminal 40. Furthermore, if the power supply control unit 441 determines that one of the battery modules 900 is a lithium battery, it drives the charging circuit unit 442 to convert the AC power 800 into DC power to charge the lithium battery module 900.

[0034] When the power supply control unit 441 activates the battery power mode, it uses the power from the battery module 900 connected to the battery holder 42 to power the lock device 3 and activates the voltage measurement module 43 to measure the terminal voltage at the output terminal 440. In this embodiment, when the battery holder 42 is simultaneously installed with the aforementioned battery modules 900 of all three battery types, the power supply control unit 441 prioritizes power consumption for lithium batteries, followed by batteries with voltages above 6V, and finally for 6V. When the terminal voltage currently measured by the voltage measurement module 43 drops below 5V, the power supply control unit 441 determines that the power output of the currently connected battery module 900 is insufficient and switches power to the next battery module 900 in the same order. When only two of the aforementioned battery modules 900 are installed, the power output order of the two currently connected battery modules 900 is similarly determined based on this priority order.

[0035] For example, if the battery holder 42 is simultaneously equipped with three types of battery modules 900, the power supply control unit 441, upon determining that one of the battery modules 900 is a lithium battery, will instruct the boost circuit unit 443 to boost the output voltage of the lithium battery module 900 to 6V, and then supply power to the lock device 3 via the output terminal 440. If the power supply control unit 441 determines that the power of the lithium battery module 900 is insufficient, that is, when the current terminal voltage drops below 5V, it will switch to outputting power from the battery module 900 with a voltage higher than 6V, and will instruct the buck circuit unit 444 to buck the output voltage of the battery module 900 with a voltage higher than 6V to 6V, and then supply power to the lock device 3 via the output terminal 440. When the power supply control unit 441 determines that the battery module 900 of the battery type higher than 6V is insufficient in power, that is, when the current terminal voltage drops below 5V, it will switch to outputting the power of the battery module 900 of the 6V battery type and directly power the lock body device 3 through the output terminal 440.

[0036] During implementation, in another embodiment of the present invention, the power supply control unit 441 can also be designed to be user-operable to set the order in which the power supply control unit 441 draws power from the three types of battery modules 900 mentioned above.

[0037] In addition, in other embodiments of the present invention, the multi-power supply system 4 may further include a warning module 45. When the power control unit 441 determines that one of the battery modules 900 is low on power, the warning module 45 may generate a warning message for the low-power battery module 900. The warning message may be, for example, but not limited to, a light, sound, and / or image.

[0038] Since the charging circuit unit 442 , the boost circuit unit 443 and the buck circuit unit 444 are all based on existing power processing technologies and have many types of circuits, they will not be described in detail.

[0039] In summary, the design of the AC power supply module 41, the battery holder 42, the voltage measurement module 43, and the power control module 44 of the multi-power supply system 4 enables the electronic lock to be electrically connected to the AC power supply 800 as a power source and simultaneously accommodate three types of battery modules 900 as backup power sources. Furthermore, the power control module 44 automatically switches between the AC power supply mode and the battery power supply mode based on the AC power supply 800. When switching to the battery power supply mode, it automatically outputs power to each battery module 900 in sequence based on the battery type. This design completely overcomes the shortcomings of existing electronic locks that use a single power source. Therefore, the objectives of this utility model are truly achieved.

[0040] However, the above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made based on the present invention are still within the scope of the present invention patent.

Claims

1. A multi-power supply system for an electronic lock, characterized in that: Suitable for use with AC power and battery modules to power a lock device. The multi-power supply system includes: a mains power supply module, converting the mains power into direct current of the voltage required for the operation of the lock device; A battery holder for electrical connection and installation of the battery module; a voltage measurement module electrically connected to the battery holder for measuring the output voltage of the battery module; A power supply control module is electrically connected to the mains power supply module, the battery holder and the voltage measurement module, and is also electrically connected to the lock body device. The power supply control module includes a power supply control unit, a boost circuit unit, a buck circuit unit, and a charging circuit unit. The power supply control unit is used to analyze the output voltage and determine that the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V, and drive the charging circuit unit to convert the mains power into direct current to charge the lithium battery type battery module. The power supply control unit will first output the mains power supply module. The DC power generated by the block is used to power the lock body device. When the power supply control unit determines that the AC power supply module does not output the DC power normally, it will switch to the battery module connected to the battery holder for power supply, and will directly power the lock body device with the power of the battery module of the 6V battery type, or drive the boost circuit unit to boost the output voltage of the battery module of the lithium battery type to 6V to power the lock body device, or drive the buck circuit unit to buck the output voltage of the battery module of the battery type higher than 6V to 6V to power the lock body device.

2. The multi-power supply system for electronic locks according to claim 1, characterized in that: It is suitable for use with multiple different types of battery modules, wherein the battery holder is used for electrical connection of the battery modules. The power supply control unit analyzes the output voltage of each battery module to determine whether the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V. The power supply control module also has an output terminal for outputting power to drive the lock body device. When the power supply control unit determines that the mains power is off, it will first output the power of one of the battery modules connected to the battery holder for power supply, and drive the voltage measurement module to measure the terminal voltage of the output terminal. When the terminal voltage drops below 5V, the power supply control unit will switch to outputting the power of another battery module connected to the battery holder for power supply.

3. The multi-power supply system for electronic locks according to claim 2, characterized in that: It also includes a warning module whose signal is connected to the power supply control module. When the power supply control unit outputs one of the battery modules connected to the battery holder for power supply, it will drive the warning module to issue a warning message when the current terminal voltage drops below 5V.

4. An electronic lock, characterized in that: Suitable for use with mains power and battery modules, including: A lock device that can be driven to switch between a locked state and an unlocked state; A multi-power supply system is electrically connected to the lock device and includes: A mains power supply module converts the mains power into direct current of the voltage required for the operation of the lock device. A battery holder for electrical connection and installation of the battery module, a voltage measurement module electrically connected to the battery holder for measuring the output voltage of the battery module; A power supply control module is electrically connected to the AC power supply module, the battery holder, and the voltage measurement module. The power supply control module includes a power supply control unit, a charging circuit unit, a boost circuit unit, and a buck circuit unit. The power supply control unit is used to analyze the output voltage and determine that the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V, and drive the charging circuit unit to convert the AC power into direct current to charge the lithium battery type battery module. The power supply control unit first outputs the direct current generated by the AC power supply module to power the lock body device. When the power supply control unit determines that the AC power supply module does not normally output the direct current, it switches to the battery module connected to the battery holder for power supply, directly powers the lock body device with the power of the 6V battery type battery module, or drives the boost circuit unit to boost the output voltage of the lithium battery type battery module to 6V to power the lock body device, or drives the buck circuit unit to buck the output voltage of the battery module higher than 6V to 6V to power the lock body device.

5. The electronic lock according to claim 4, characterized in that: It is suitable for use with multiple different types of battery modules, wherein the battery holder is used for electrical connection of the battery modules. The power supply control unit analyzes the output voltage of each battery module to determine whether the battery module is a lithium battery type, a 6V battery type, or a battery type higher than 6V. The power supply control module also has an output terminal for outputting power to drive the lock body device. When the power supply control unit determines that the mains power is off, it will first output the power of one of the battery modules connected to the battery holder for power supply, and drive the voltage measurement module to measure the terminal voltage of the output terminal. When the terminal voltage drops below 5V, the power supply control unit will switch to outputting the power of another battery module connected to the battery holder for power supply.

6. The electronic lock according to claim 5, characterized in that: The multi-power supply system also includes a warning module whose signal is connected to the power supply control module. When the power supply control unit outputs one of the battery modules connected to the battery holder for power supply, it will drive the warning module to issue a warning message when the current terminal voltage drops below 5V.

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