Backward feed protection device and method for field power bank

Abstract

The invention discloses a reverse feed protection device and a reverse feed protection method for a Diagnostic power bank, which are implemented to realize intelligent isolation and seamless switching of two power supply paths of reverse feed and forward charging in a complex application scene through cooperative configuration and linkage control of a reverse feed protection circuit and a charging control circuit, and specifically, the reverse feed protection device and the method have the advantages that the intelligent isolation and seamless switching of the two power supply paths of the reverse feed and the forward charging in the complex application scene are realized; the reverse feed protection circuit is triggered through the first control instruction to actively close the first power supply path, and a loop through which the power bank feeds back electric energy to the cabinet is physically cut off, so that power supply / energy supply conflicts can be effectively prevented, and on the basis of improving the charging control accuracy and reliability of the cabinet and the target power bank, the reliability of the cabinet and the target power bank is improved. And the use safety and the service life of the cabinet and the target power bank can be improved.

Description

Technical Field

[0001] This invention relates to the field of charging equipment control technology, and in particular to a reverse power feedback protection device and method for a portable power bank. Background Technology

[0002] In the field of modern charging equipment applications, with the widespread use of mobile devices, power banks, as a convenient mobile power supply device, are finding increasingly complex and diverse applications. Among them, portable power banks, as a special type of power bank, have gained a certain market share due to their flexibility in usage scenarios, while regular power banks still have a large user base. These power banks typically require specific charging cabinets to achieve functions such as charging and storage.

[0003] In the interaction between the server rack and the power bank, the power supply is crucial. However, in practical applications, due to the lack of a sophisticated power management mechanism, when the server rack is under external power supply, the power bank may supply power to the rack in reverse, conflicting with the rack's normal forward power supply path. This power / energy conflict not only leads to chaotic charging processes, making precise charging control impossible and reducing charging reliability—for example, abnormal power consumption of the power bank and unstable power supply to the rack—but also poses safety hazards such as overcurrent and overvoltage, damaging the electronic components of both the rack and the power bank and shortening their lifespan. This problem is particularly pronounced in complex application scenarios, such as when multiple power banks interact with the rack simultaneously or when different types of power banks are used together, severely impacting the stability and safety of the entire charging system and causing significant inconvenience and potential risks to users. Therefore, resolving the conflict between reverse power supply and forward charging paths during the power supply process between the server rack and the power bank is of paramount importance. Summary of the Invention

[0004] This invention provides a reverse power feedback protection device and method for power banks used in remote areas, which can improve the accuracy and reliability of charging control for cabinets and power banks in practical applications, as well as the safety and lifespan of the equipment.

[0005] The first aspect of this invention discloses a reverse power supply protection device for a power bank used in the field, the device comprising at least a reverse power supply protection circuit and a charging control circuit, wherein: The first terminal of the reverse power supply protection circuit is electrically connected to the first terminal of the cabinet; the second terminal of the reverse power supply protection circuit is electrically connected to the first terminal of the charging control circuit; the second terminal of the charging control circuit is electrically connected to the second terminal of the cabinet; and the third terminal of the charging control circuit is electrically connected to the first terminal of the target power bank. The reverse power supply protection circuit is used to shut down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command issued by the cabinet when it receives the first control command. The first power supply path is the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit. The first control command is used to indicate that the cabinet is currently in an external power supply state. The charging control circuit is used to perform a first charging operation on the target power bank according to the first control command and a preset second power supply path when the first control command is received; the second power supply path is the path through which the power supply of the cabinet supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank.

[0006] As an optional implementation, in the first aspect of the present invention, the reverse power supply protection circuit is further configured to, when receiving a second control command issued by the cabinet, activate the first power supply path corresponding to the reverse power supply protection circuit according to the second control command. The charging control circuit is further configured to shut down the second power supply path according to the second control command when the second control command is received; the second control command is used to indicate that the cabinet is currently in a state without external power supply. The charging control circuit is also used to detect the type of the target power bank, wherein the power bank type includes a first type corresponding to the wilderness power bank or a second type corresponding to the ordinary power bank; The charging control circuit is further configured to, when the target power bank is detected to be of the first type, control the target power bank to perform a second charging operation on the cabinet according to the second control command and the first power supply path.

[0007] As an optional implementation, in a first aspect of the present invention, the reverse power supply protection circuit includes a first protection module, a second protection module, and a third protection module, wherein: The first end of the first protection module is electrically connected to the third end of the cabinet; the second end of the first protection module is electrically connected to the first end of the second protection module. The second terminal of the second protection module is electrically connected to the first terminal of the third protection module; the third terminal of the second protection module is electrically connected to the first terminal of the charging control circuit. The second end of the third protection module is electrically connected to the first end of the cabinet; the third end of the third protection module is electrically connected to the first end of the charging control circuit. And, the first protection module is used to switch the module state of the first protection module to the conduction state when it receives a first control command issued by the cabinet; The first protection module is further configured to switch the module state of the second protection module and the module state of the third protection module to the cut-off state after switching to the conduction state.

[0008] As an optional implementation, in the first aspect of the present invention, the first protection module is further configured to switch the module state of the first protection module to the off state when it receives a second control command issued by the cabinet and detects that the power bank type of the target power bank is the first type. The second protection module is used to switch the module state of the second protection module and the module state of the third protection module to the on state when it receives the second control command and detects that the target power bank is of the first type.

[0009] As an optional implementation, in a first aspect of the present invention, the first protection module includes a first transistor, a first voltage regulator, and a pull-up resistor, wherein: The first end of the first voltage-stabilizing resistor and the first end of the pull-up resistor are respectively electrically connected to the third end of the cabinet; the second end of the first voltage-stabilizing resistor is electrically connected to the base of the first transistor; the collector of the first transistor is electrically connected to the first end of the second protection module of the second protection module; the emitter of the first transistor and the second end of the pull-up resistor are both used for grounding.

[0010] As an optional implementation, in a first aspect of the present invention, the second protection module includes a second transistor, a third transistor, a first voltage divider resistor, and a second voltage divider resistor, wherein: The collector of the first transistor is electrically connected to the base of the second transistor, the base of the third transistor, the first end of the first voltage divider resistor, and the first end of the second voltage divider resistor, respectively; the second end of the first voltage divider resistor is electrically connected to the first end of the charging control circuit. The collectors of the second transistor and the third transistor are both electrically connected to the first terminal of the third protection module; The emitter of the second transistor, the emitter of the third transistor, and the second terminal of the second voltage divider resistor are all used for grounding.

[0011] As an optional implementation, in the first aspect of the present invention, the third protection module includes a first MOSFET, a second voltage-regulating resistor, and a third voltage-regulating resistor, wherein: The collector of the second transistor is electrically connected to the first terminal of the second voltage-regulating resistor and the gate of the first MOS transistor, respectively; the collector of the third transistor is electrically connected to the first terminal of the third voltage-regulating resistor and the gate of the second MOS transistor, respectively. The second terminal of the second voltage-regulating resistor and the source of the first MOSFET are both electrically connected to the first terminal of the cabinet; the drain of the first MOSFET is electrically connected to the source of the second MOSFET; the drain of the second MOSFET and the second terminal of the third voltage-regulating resistor are both electrically connected to the first terminal of the charging control circuit.

[0012] As an optional implementation, in a first aspect of the present invention, the charging control circuit includes a charging control interface, a first diode, and a second diode, wherein: The first end of the charging control interface is used to electrically connect to the first end of the target power bank; the second end of the charging control interface is electrically connected to the second end of the first voltage divider resistor, the second end of the third voltage regulator resistor, the drain of the second MOS transistor, the cathode of the first diode, and the cathode of the second diode. The positive terminals of the first diode and the second diode are both used for electrical connection to the second end of the cabinet.

[0013] A second aspect of this invention discloses a reverse power supply protection method for a power bank used in remote areas. The method is applied to a reverse power supply protection device for a power bank used in remote areas. The device includes at least a reverse power supply protection circuit and a charging control circuit, wherein: a first terminal of the reverse power supply protection circuit is electrically connected to a first terminal of a cabinet; a second terminal of the reverse power supply protection circuit is electrically connected to a first terminal of the charging control circuit; a second terminal of the charging control circuit is electrically connected to a second terminal of the cabinet; and a third terminal of the charging control circuit is electrically connected to a first terminal of the target power bank. The method includes: When the reverse power supply protection circuit receives a first control command issued by the cabinet, it shuts down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command. The first power supply path is the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit. The first control command is used to indicate that the cabinet is currently in an external power supply state. When the charging control circuit receives the first control command, it performs a first charging operation on the target power bank according to the first control command and a preset second power supply path; the second power supply path is the path through which the power supply of the cabinet supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank.

[0014] As an optional implementation, in a second aspect of the invention, the method further includes: When the reverse power supply protection circuit receives a second control command issued by the cabinet, the first power supply path corresponding to the reverse power supply protection circuit is activated according to the second control command. When the charging control circuit receives the second control command, it shuts down the second power supply path according to the second control command; the second control command is used to indicate that the cabinet is currently in a state without external power supply. The charging control circuit detects the type of the target power bank, and the power bank type includes a first type corresponding to the wilderness power bank or a second type corresponding to the ordinary power bank; When the charging control circuit detects that the target power bank is of the first type, it controls the target power bank to perform a second charging operation on the cabinet according to the second control command and the first power supply path.

[0015] As an optional implementation, in a second aspect of the present invention, the reverse power supply protection circuit includes a first protection module, a second protection module, and a third protection module, wherein: The first end of the first protection module is electrically connected to the third end of the cabinet; the second end of the first protection module is electrically connected to the first end of the second protection module. The second terminal of the second protection module is electrically connected to the first terminal of the third protection module; the third terminal of the second protection module is electrically connected to the first terminal of the charging control circuit. The second end of the third protection module is electrically connected to the first end of the cabinet; the third end of the third protection module is electrically connected to the first end of the charging control circuit. When the reverse power supply protection circuit receives a first control command issued by the cabinet, it shuts down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command, including: When the first protection module receives the first control command issued by the cabinet, the module state of the first protection module is switched to the conduction state; After the first protection module switches to the conducting state, it switches the module states of the second protection module and the third protection module to the cut-off state.

[0016] As an optional implementation, in a second aspect of the invention, the method further includes: When the first protection module receives the second control command issued by the cabinet and detects that the target power bank is of the first type, the module state of the first protection module is switched to the off state. When the second protection module receives the second control command and detects that the target power bank is of the first type, the module state of the second protection module and the module state of the third protection module are both switched to the on state.

[0017] As an optional implementation, in a second aspect of the present invention, the first protection module includes a first transistor, a first voltage regulator, and a pull-up resistor, wherein: The first end of the first voltage-stabilizing resistor and the first end of the pull-up resistor are respectively electrically connected to the third end of the cabinet; the second end of the first voltage-stabilizing resistor is electrically connected to the base of the first transistor; the collector of the first transistor is electrically connected to the first end of the second protection module of the second protection module; the emitter of the first transistor and the second end of the pull-up resistor are both used for grounding.

[0018] As an optional implementation, in a second aspect of the present invention, the second protection module includes a second transistor, a third transistor, a first voltage divider resistor, and a second voltage divider resistor, wherein: The collector of the first transistor is electrically connected to the base of the second transistor, the base of the third transistor, the first end of the first voltage divider resistor, and the first end of the second voltage divider resistor, respectively; the second end of the first voltage divider resistor is electrically connected to the first end of the charging control circuit. The collectors of the second transistor and the third transistor are both electrically connected to the first terminal of the third protection module; The emitter of the second transistor, the emitter of the third transistor, and the second terminal of the second voltage divider resistor are all used for grounding.

[0019] As an optional implementation, in a second aspect of the invention, the third protection module includes a first MOSFET, a second voltage-regulating resistor, and a third voltage-regulating resistor, wherein: The collector of the second transistor is electrically connected to the first terminal of the second voltage-regulating resistor and the gate of the first MOS transistor, respectively; the collector of the third transistor is electrically connected to the first terminal of the third voltage-regulating resistor and the gate of the second MOS transistor, respectively. The second terminal of the second voltage-regulating resistor and the source of the first MOSFET are both electrically connected to the first terminal of the cabinet; the drain of the first MOSFET is electrically connected to the source of the second MOSFET; the drain of the second MOSFET and the second terminal of the third voltage-regulating resistor are both electrically connected to the first terminal of the charging control circuit.

[0020] As an optional implementation, in a second aspect of the present invention, the charging control circuit includes a charging control interface, a first diode, and a second diode, wherein: The first end of the charging control interface is used to electrically connect to the first end of the target power bank; the second end of the charging control interface is electrically connected to the second end of the first voltage divider resistor, the second end of the third voltage regulator resistor, the drain of the second MOS transistor, the cathode of the first diode, and the cathode of the second diode. The positive terminals of the first diode and the second diode are both used for electrical connection to the second end of the cabinet.

[0021] The third aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute some or all of the steps in the reverse power feedback protection method for the wild power bank described in any of the second aspects of the present invention.

[0022] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a reverse power supply protection device and method for a portable power bank. The device includes at least a reverse power supply protection circuit and a charging control circuit, wherein: a first terminal of the reverse power supply protection circuit is electrically connected to a first terminal of a cabinet; a second terminal of the reverse power supply protection circuit is electrically connected to a first terminal of the charging control circuit; a second terminal of the charging control circuit is electrically connected to a second terminal of the cabinet; a third terminal of the charging control circuit is electrically connected to a first terminal of the target power bank; the reverse power supply protection circuit is used to shut down a first power supply path corresponding to the reverse power supply protection circuit according to a first control command issued by the cabinet when it receives the first control command, the first power supply path being the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit; the first control command is used to indicate that the cabinet is currently in an external power supply state; the charging control circuit is used to perform a first charging operation on the target power bank according to a preset second power supply path when it receives the first control command; the second power supply path is the path through which the cabinet's power supply supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank. As can be seen, by implementing this invention, through the coordinated configuration and linkage control of the reverse power supply protection circuit and the charging control circuit, intelligent isolation and seamless switching of the two power supply paths of reverse power supply and forward charging are achieved in complex application scenarios. This can effectively prevent power supply / energy supply conflicts, improve the accuracy and reliability of charging control of the cabinet and the target power bank, and also improve the safety and service life of the cabinet and the target power bank. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a reverse power feedback protection device for a power bank used in the wild, as disclosed in an embodiment of the present invention. Figure 2 This is a schematic diagram of another reverse power supply protection device for a power bank used in the wild, as disclosed in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of another reverse power supply protection device for a power bank used in the wild, as disclosed in an embodiment of the present invention. Figure 4 This is a flowchart illustrating a method for reverse power supply protection of a power bank used in the wild, as disclosed in an embodiment of the present invention. Figure 5 This is a flowchart illustrating another method for reverse power supply protection of a power bank in the wild, as disclosed in an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] This invention discloses a reverse power supply protection device and method for power banks used in remote applications. Through the coordinated configuration and linkage control of the reverse power supply protection circuit and the charging control circuit, intelligent isolation and seamless switching between reverse power supply and forward charging paths are achieved in complex application scenarios. This effectively prevents power supply / energy conflicts and improves the accuracy and reliability of charging control for both the power bank cabinet and the target power bank, while also enhancing the safety and lifespan of both. Detailed descriptions follow.

[0029] Example 1 Please see Figure 1 Please see Figure 1 , Figure 1 This is a schematic diagram of a reverse power feedback protection device for a power bank used in the field, as disclosed in an embodiment of the present invention. Figure 1 The described reverse power feedback protection device for portable power banks can be applied to rechargeable / rentable charging devices, such as power bank cabinets; however, this embodiment of the invention is not limited to this application. Figure 1As shown, the reverse power supply protection device 10 for the outdoor power bank may include at least: a reverse power supply protection circuit 101 and a charging control circuit 102, wherein: The first terminal of the reverse power supply protection circuit 101 is electrically connected to the first terminal of the cabinet 20; the second terminal of the reverse power supply protection circuit 101 is electrically connected to the first terminal of the charging control circuit 102; the second terminal of the charging control circuit 102 is electrically connected to the second terminal of the cabinet 20; and the third terminal of the charging control circuit 102 is electrically connected to the first terminal of the target power bank 30.

[0030] The reverse power supply protection circuit 101 is used to shut down the first power supply path corresponding to the reverse power supply protection circuit 101 when it receives a first control command issued by the cabinet 20. The first power supply path is the path through which the target power bank 30 supplies power to the cabinet 20 via the charging control circuit 102 and the reverse power supply protection circuit 101. The first control command is used to indicate that the cabinet 20 is currently in an external power supply state.

[0031] The charging control circuit 102 is used to perform a first charging operation on the target power bank 30 according to the first control command and a preset second power supply path when a first control command is received. The second power supply path is the path through which the power supply of the cabinet 20 supplies power to the target power bank 30 via the charging control circuit 102. The target power bank includes a portable power bank or a regular power bank.

[0032] In this embodiment of the invention, a first control command triggers the reverse power supply protection circuit to actively shut down the first power supply path, physically cutting off the loop of power bank feeding power back to the cabinet. This is equivalent to setting up an intelligent "one-way valve" in the circuit. When an external power source is detected in the cabinet (this detection action can be executed by the smart chip / MCU built into the cabinet, and the first control command can also be issued by the smart chip / MCU), the first control command is sent to the reverse power supply protection circuit. This isolates the reverse current from flowing into the power bank, avoiding power supply / energy conflict and improving the safety, stability, and lifespan of the cabinet power system and the power bank itself.

[0033] In this embodiment of the invention, the second power supply path can be via... Figure 3 The 5V input port in the device, via the first diode D1 and the second diode D2, charges the target power bank normally through the Vout interface. At this time, the target power bank can be either a "wilderness power bank" or a regular power bank. Under this condition, the "wilderness power bank" is equivalent to a regular power bank.

[0034] It is evident that implementation Figure 1The described reverse power supply protection device for power banks achieves intelligent isolation and seamless switching between reverse power supply and forward charging in complex application scenarios through the coordinated configuration and linkage control of the reverse power supply protection circuit and the charging control circuit. It can effectively prevent power supply / energy supply conflicts, improve the accuracy and reliability of charging control for the cabinet and the target power bank, and also improve the safety and service life of the cabinet and the target power bank.

[0035] In an optional embodiment, the reverse power supply protection circuit 101 is further configured to enable the first power supply path corresponding to the reverse power supply protection circuit 101 according to the second control command issued by the cabinet 20 when a second control command is received. The charging control circuit 102 is also used to shut down the second power supply path according to the second control command when a second control command is received; the second control command is used to indicate that the cabinet 20 is currently in a state without external power supply. The charging control circuit 102 is also used to detect the type of the target power bank 30, which includes a first type corresponding to a field power bank or a second type corresponding to a regular power bank. The charging control circuit 102 is also used to control the target power bank 30 to perform a second charging operation on the cabinet 20 according to the second control command and the first power supply path when the power bank type of the target power bank 30 is detected to be the first type.

[0036] In this optional embodiment, when the cabinet is in a state without external power supply and there is a portable power bank inside the cabinet, the cabinet issues a second control command to shut down forward charging and enable reverse power feedback, turning the portable power bank into an "emergency power source." Figure 3 The Vout interface outputs 12V DC voltage to power the core systems of the cabinet (such as the control board and communication module), expanding a single power-consuming device (power bank) into a backup energy source for the system. This ensures the basic operational capabilities of the cabinet in critical power outage scenarios (such as completing order settlement and maintaining network communication), greatly improving the robustness and business continuity of the entire shared charging system.

[0037] In this optional embodiment, it should be noted that, preferably, a specific location can be set on the rack, and after detecting that a power bank is connected to that specific location, the type of the power bank is detected through a handshake protocol, thereby distinguishing whether the connected power bank is a portable power bank or a regular power bank. Optionally, a specific location can be omitted from the rack, and each connected power bank can be detected through a handshake protocol. Relatively speaking, the first setting method only needs to monitor the connection status and type of the power bank at that specific location, which is more accurate; the second method is more flexible in use, but relatively speaking, the monitoring range needs to be larger, which will increase the monitoring burden of the overall rack to a certain extent.

[0038] In this optional embodiment, by setting up a power bank type detection mechanism for the target power bank, precise energy scheduling and differentiated management can be achieved. Specifically, it can prevent ordinary power banks from being accidentally discharged when returned, which could lead to insufficient power and user complaints or safety risks caused by incompatible battery discharge voltage. At the same time, this mechanism ensures that the power banks supplying power to the cabinet are qualified off-the-shelf power banks, thus guaranteeing the stability and reliability of the power supply to the cabinet.

[0039] As can be seen, in this optional embodiment, by introducing status commands and device identification mechanisms, intelligent switching and precise scheduling of bidirectional power supply to the cabinet are achieved. Specifically, when the cabinet is in a power outage state (meaning there is no external power supply), a dedicated "field power bank" can be used as an emergency power source to ensure the continuous and normal operation of the cabinet. At the same time, differentiated energy management can be achieved through type identification, which improves the robustness of the corresponding control system of the cabinet while taking into account the safety of user equipment.

[0040] In another alternative embodiment, please refer to Figure 2 Please see Figure 2 , Figure 2 This is a schematic diagram of another reverse power feedback protection device for a power bank used in the field, as disclosed in an embodiment of the present invention. Figure 2 As shown, the reverse power supply protection circuit 101 includes a first protection module 1011, a second protection module 1012, and a third protection module 1013, wherein: The first terminal of the first protection module 1011 is electrically connected to the third terminal of the cabinet 20; the second terminal of the first protection module 1011 is electrically connected to the first terminal of the second protection module 1012. The second terminal of the second protection module 1012 is electrically connected to the first terminal of the third protection module 1013; the third terminal of the second protection module 1012 is electrically connected to the first terminal of the charging control circuit 102. The second end of the third protection module 1013 is electrically connected to the first end of the cabinet 20; the third end of the third protection module 1013 is electrically connected to the first end of the charging control circuit 102.

[0041] In this optional embodiment, the first protection module 1011 is optionally used to switch the module state of the first protection module 1011 to the conduction state when it receives a first control command issued by the cabinet 20. In this optional embodiment, the first protection module 1011 is further configured to switch the module state of the second protection module 1012 and the module state of the third protection module 1013 to the cut-off state after switching to the on state.

[0042] In this optional embodiment, the first protection module 1011 is optionally further configured to switch the module state of the first protection module 1011 to the off state when it receives a second control command issued by the cabinet 20 and detects that the power bank type of the target power bank 30 is the first type. In this optional embodiment, the second protection module 1012 is used to switch the module state of the second protection module 1012 and the module state of the third protection module 1013 to the on state when a second control command is received and the power bank type of the target power bank 30 is detected to be the first type.

[0043] In this optional embodiment, when executing the "forward charging" mode, the first protection module is turned on, while the second and third protection modules are forcibly turned off. This combination of "one on and two off" states creates a clear current isolation zone, which can completely block any possibility of current being fed back to the cabinet from a physical connection perspective. Thus, when powered externally, it provides the cabinet's control system with extremely high reliability against reverse power feeding and avoids the risk of failure due to the failure of a single switching element.

[0044] As can be seen, in this optional embodiment, the reverse power supply protection circuit is divided into three modules: a first protection module, a second protection module, and a third protection module. The first protection module plays the role of the master controller, coordinating the states of the second and third modules. This "master-slave" cascaded control mode reduces the control complexity of the central controller (such as the cabinet MCU), allowing synchronous control of multiple modules in the reverse power supply protection circuit to be achieved simply by issuing a first control command or a second control command to the first protection module. This is beneficial for improving the control stability and response efficiency of the circuit.

[0045] In yet another alternative embodiment, please refer to Figure 3 , Figure 3 This is a schematic diagram of another reverse power feedback protection device for a power bank used in the wild, as disclosed in an embodiment of the present invention. Figure 3As shown, the first protection module 1011 includes a first transistor Q1, a first voltage regulator R1, and a pull-up resistor R2, wherein: The first end of the first voltage regulator R1 and the first end of the pull-up resistor R2 are electrically connected to the third end of the cabinet 20, respectively; the second end of the first voltage regulator R1 is electrically connected to the base of the first transistor Q1; the collector of the first transistor Q1 is electrically connected to the first end of the second protection module 1012; the emitter of the first transistor Q1 and the second end of the pull-up resistor R2 are both used for grounding.

[0046] In this optional embodiment, when the first protection module receives the first control command issued by the cabinet, it controls the system according to the first control command. Figure 3 The CUT control point outputs a high level, which in turn controls the first transistor Q1 to conduct. After the first transistor Q1 is turned on, it causes... Figure 3 The voltage at point A is pulled down to the first preset voltage value (such as 0.6V lower than the conduction voltage of the second transistor Q2 and the third transistor Q3), thereby controlling the second protection module and the third protection module to be turned off.

[0047] In this optional embodiment, similarly, when the first protection module receives the second control command issued by the cabinet, it controls the system according to the second control command. Figure 3 The CUT control point outputs a low level (it should be noted that this CUT control point can be in a low-level state by default), which in turn controls the first transistor Q1 to turn off. After the first transistor Q1 turns off, it makes... Figure 3 The voltage at point A is pulled up to the second preset voltage value (such as higher than the conduction voltage of the second transistor Q2 and the third transistor Q3, specifically between 0.6V and 0.7V), thereby controlling the second protection module and the third protection module to conduct.

[0048] As can be seen, in this optional embodiment, by setting the first transistor Q1, the first voltage regulator R1 and the pull-up resistor R2, the control commands issued by the cabinet can be responded to quickly. Thus, the first protection module controls the second and third protection modules cascaded with it. The hierarchical control method reduces the command control complexity of the cabinet and improves the control safety and stability of the overall reverse power supply protection circuit.

[0049] In another alternative embodiment, such as Figure 3 As shown, the second protection module 1012 includes a second transistor Q2, a third transistor Q3, a first voltage divider resistor R3, and a second voltage divider resistor R4, wherein: The collector of the first transistor Q1 is electrically connected to the base of the second transistor Q2, the base of the third transistor Q3, the first terminal of the first voltage divider resistor R3, and the first terminal of the second voltage divider resistor R4, respectively; the second terminal of the first voltage divider resistor R3 is electrically connected to the first terminal of the charging control circuit 102. The collectors of the second transistor Q2 and the third transistor Q3 are both electrically connected to the first terminal of the third protection module 1013. The emitter of the second transistor Q2, the emitter of the third transistor Q3, and the second terminal of the second voltage divider resistor R4 are all used for grounding.

[0050] In yet another alternative embodiment, such as Figure 3 As shown, the third protection module 1013 includes a first MOSFET Q4, a second voltage regulator resistor R5, and a third voltage regulator resistor R6, wherein: The collector of the second transistor Q2 is electrically connected to the first terminal of the second voltage regulator R5 and the gate of the first MOSFET Q4, respectively; the collector of the third transistor Q3 is electrically connected to the first terminal of the third voltage regulator R6 and the gate of the second MOSFET Q5, respectively. The second terminal of the second voltage regulator R5 and the source of the first MOSFET Q4 are both electrically connected to the first terminal of the cabinet 20; the drain of the first MOSFET Q4 is electrically connected to the source of the second MOSFET Q5; the drain of the second MOSFET Q5 and the second terminal of the third voltage regulator R6 are both electrically connected to the first terminal of the charging control circuit 102.

[0051] In the above optional embodiments, when the first protection module receives the first control command issued by the cabinet, it controls the first transistor Q1 to conduct, causing the second transistor Q2 and the third transistor Q3 to be turned off. Simultaneously, it can synchronously control the first MOSFET Q4 and the second MOSFET Q4 to be turned off. That is, with the first protection module as the first-level control point, and the second and third protection modules as secondary / second-level control points of the first protection module, power supply control is achieved in a hierarchical manner.

[0052] As can be seen, in this optional embodiment, the refined modules of the second and third protection modules can respond promptly to changes in the module status of the first protection module. The hierarchical control reduces the complexity of the cabinet's command control and improves the overall control safety and stability of the reverse power supply protection circuit.

[0053] In another alternative embodiment, such as Figure 3 As shown, the charging control circuit 102 includes a charging control interface Vout, a first diode D1, and a second diode D2, wherein: The first end of the charging control interface Vout is used to electrically connect to the first end of the target power bank 30; the second end of the charging control interface Vout is electrically connected to the second end of the first voltage divider resistor R3, the second end of the third voltage regulator resistor R6, the drain of the second MOSFET Q5, the cathode of the first diode D1, and the cathode of the second diode D2. The positive terminals of the first diode D1 and the second diode D2 are both used for electrical connection to the second terminal of the cabinet 20.

[0054] As can be seen, in this optional embodiment, by setting two diodes to achieve the isolation function of the charging channel, it can not only meet the forward charging requirements of the cabinet to charge the power bank, but also achieve the isolation of the charging channel when the power bank supplies power to the cabinet, preventing power supply / power supply conflicts, voltage backflow and other situations, which is conducive to improving the safety and stability of the overall power control system of the cabinet.

[0055] Example 2 Please see Figure 4 , Figure 4 This is a flowchart illustrating a reverse power supply protection method for a power bank used in remote areas, as disclosed in an embodiment of the present invention. Figure 4 The described reverse power supply protection method for power banks used in remote areas can be applied to reverse power supply protection devices for power banks used in remote areas, and this invention does not limit its application. Furthermore, as... Figure 1 As shown, the reverse power supply protection device for the outdoor power bank may include at least: a reverse power supply protection circuit 101 and a charging control circuit 102, wherein: a first terminal of the reverse power supply protection circuit 101 is electrically connected to a first terminal of the cabinet 20; a second terminal of the reverse power supply protection circuit 101 is electrically connected to a first terminal of the charging control circuit 102; a second terminal of the charging control circuit 102 is electrically connected to a second terminal of the cabinet 20; and a third terminal of the charging control circuit 102 is electrically connected to a first terminal of the target power bank 30. Further, as... Figure 4 As shown, the reverse power feedback protection method for the power bank used in the field can include the following operations: 401. When the reverse power supply protection circuit receives the first control command issued by the cabinet, it shuts down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command.

[0056] In this embodiment of the invention, the first power supply path is the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit; the first control command is used to indicate that the cabinet is currently in an external power supply state.

[0057] 402. When the charging control circuit receives the first control command, it performs the first charging operation on the target power bank according to the preset second power supply path.

[0058] In this embodiment of the invention, the second power supply path is the path through which the power supply of the cabinet supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank.

[0059] It is evident that implementation Figure 4 The described reverse power supply protection method for power banks in the wild achieves intelligent isolation and seamless switching between reverse power supply and forward charging in complex application scenarios through the coordinated configuration and linkage control of the reverse power supply protection circuit and the charging control circuit. It can effectively prevent power supply / energy supply conflicts, improve the accuracy and reliability of charging control of the cabinet and the target power bank, and also improve the safety and service life of the cabinet and the target power bank.

[0060] Example 3 Please see Figure 5 , Figure 5 This is a flowchart illustrating another method for reverse power feedback protection of a power bank used in remote areas, as disclosed in an embodiment of the present invention. Figure 5 The described reverse power supply protection method for power banks used in remote areas can be applied to reverse power supply protection devices for power banks used in remote areas, and this invention does not limit its application. For example... Figure 5 As shown, the reverse power feedback protection method for the power bank used in the field can include the following operations: 501. When the reverse power supply protection circuit receives the first control command issued by the cabinet, it shuts down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command.

[0061] 502. When the charging control circuit receives the first control command, it performs the first charging operation on the target power bank according to the preset second power supply path based on the first control command.

[0062] 503. When the reverse power supply protection circuit receives a second control command issued by the cabinet, the first power supply path corresponding to the reverse power supply protection circuit is activated according to the second control command.

[0063] 504. When the charging control circuit receives the second control command, it shuts down the second power supply path according to the second control command; the second control command is used to indicate that the cabinet is currently in a state without external power supply.

[0064] 505. The charging control circuit detects the type of the target power bank, which includes the first type corresponding to the "wild" power bank or the second type corresponding to the "ordinary" power bank.

[0065] 506. When the charging control circuit detects that the target power bank is of the first type, it controls the target power bank to perform a second charging operation on the cabinet according to the second control command and the first power supply path.

[0066] For further descriptions of steps 501-502 in this embodiment of the invention, please refer to the other specific descriptions of steps 401-402 in Embodiment 2. These descriptions will not be repeated in this embodiment of the invention.

[0067] It is evident that implementation Figure 5 The described reverse power supply protection method using a "field power bank" achieves intelligent switching and precise scheduling of bidirectional power supply to the server rack by introducing status commands and device identification mechanisms. Specifically, when the server rack is in a power outage state (meaning there is no external power supply), a dedicated "field power bank" can be used as an emergency power source to ensure the continuous and positive operation of the server rack. At the same time, it can achieve differentiated energy management through type identification, improving the robustness of the corresponding control system of the server rack while ensuring the safety of user equipment.

[0068] In an optional embodiment, the reverse power supply protection circuit includes a first protection module, a second protection module, and a third protection module, wherein: The first terminal of the first protection module is electrically connected to the third terminal of the cabinet; the second terminal of the first protection module is electrically connected to the first terminal of the second protection module. The second terminal of the second protection module is electrically connected to the first terminal of the third protection module; the third terminal of the second protection module is electrically connected to the first terminal of the charging control module. The second end of the third protection module is electrically connected to the first end of the cabinet; the third end of the third protection module is electrically connected to the first end of the charging control module.

[0069] When the reverse power supply protection circuit receives the first control command issued by the cabinet, the specific method of shutting down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command includes: When the first protection module receives the first control command issued by the cabinet, the module status of the first protection module is switched to the conduction state; After the first protection module switches to the on state, it switches the module states of the second protection module and the third protection module to the off state.

[0070] In this optional embodiment, when the first protection module receives the second control command issued by the cabinet and detects that the target power bank is of the first type, the module state of the first protection module is switched to the off state. When the second protection module receives the second control command and detects that the target power bank is of the first type, the module status of both the second protection module and the third protection module are switched to the on state.

[0071] As can be seen, in this optional embodiment, the reverse power supply protection circuit is divided into three modules: a first protection module, a second protection module, and a third protection module. The first protection module plays the role of the master controller, coordinating the states of the second and third modules. This "master-slave" cascaded control mode reduces the control complexity of the central controller (such as the cabinet MCU), allowing synchronous control of multiple modules in the reverse power supply protection circuit to be achieved simply by issuing a first control command or a second control command to the first protection module. This is beneficial for improving the control stability and response efficiency of the circuit.

[0072] In another optional embodiment, the first protection module includes a first transistor, a first voltage regulator, and a pull-up resistor, wherein: The first end of the first voltage regulator and the first end of the pull-up resistor are electrically connected to the third end of the cabinet, respectively; the second end of the first voltage regulator is electrically connected to the base of the first transistor; the collector of the first transistor is electrically connected to the first end of the second protection module of the second protection module; the emitter of the first transistor and the second end of the pull-up resistor are both used for grounding.

[0073] As can be seen, in this optional embodiment, In yet another optional embodiment, the second protection module includes a second transistor, a third transistor, a first voltage divider resistor, and a second voltage divider resistor, wherein: The collector of the first transistor is electrically connected to the base of the second transistor, the base of the third transistor, the first end of the first voltage divider resistor, and the first end of the second voltage divider resistor, respectively; the second end of the first voltage divider resistor is electrically connected to the first end of the charging control module. The collectors of the second transistor and the third transistor are both electrically connected to the first terminal of the third protection module. The emitter of the second transistor, the emitter of the third transistor, and the second terminal of the second voltage divider resistor are all used for grounding.

[0074] As can be seen, in this optional embodiment, by setting a first transistor, a first voltage regulator, and a pull-up resistor, the control commands issued by the cabinet can be responded to quickly. Thus, the first protection module controls the second and third protection modules cascaded with it. The hierarchical control method reduces the complexity of the cabinet's command control and improves the control safety and stability of the overall reverse power supply protection circuit.

[0075] In another optional embodiment, the third protection module includes a first MOSFET, a second voltage-regulating resistor, and a third voltage-regulating resistor, wherein: The collector of the second transistor is electrically connected to the first terminal of the second voltage regulator and the gate of the first MOSFET, respectively; the collector of the third transistor is electrically connected to the first terminal of the third voltage regulator and the gate of the second MOSFET, respectively. The second terminal of the second voltage regulator and the source of the first MOSFET are both electrically connected to the first terminal of the cabinet; the drain of the first MOSFET is electrically connected to the source of the second MOSFET; the drain of the second MOSFET and the second terminal of the third voltage regulator are both electrically connected to the first terminal of the charging control module.

[0076] As can be seen, in this optional embodiment, the refined modules of the second and third protection modules can respond promptly to changes in the module status of the first protection module. The hierarchical control reduces the complexity of the cabinet's command control and improves the overall control safety and stability of the reverse power supply protection circuit.

[0077] In yet another optional embodiment, the charging control module includes a charging control interface, a first diode, and a second diode, wherein: The first end of the charging control interface is used to electrically connect to the first end of the target power bank; the second end of the charging control interface is electrically connected to the second end of the first voltage divider resistor, the second end of the third voltage regulator resistor, the drain of the second MOSFET, the cathode of the first diode, and the cathode of the second diode. The positive terminals of both the first and second diodes are used for electrical connection to the second end of the cabinet.

[0078] As can be seen, in this optional embodiment, by setting two diodes to achieve the isolation function of the charging channel, it can not only meet the forward charging requirements of the cabinet to charge the power bank, but also achieve the isolation of the charging channel when the power bank supplies power to the cabinet, preventing power supply / power supply conflicts, voltage backflow and other situations, which is conducive to improving the safety and stability of the overall power control system of the cabinet.

[0079] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0080] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reverse power feedback protection device for a power bank used in the field, characterized in that, The device includes at least a reverse power supply protection circuit and a charging control circuit, wherein: The first terminal of the reverse power supply protection circuit is electrically connected to the first terminal of the cabinet; the second terminal of the reverse power supply protection circuit is electrically connected to the first terminal of the charging control circuit; the second terminal of the charging control circuit is electrically connected to the second terminal of the cabinet; and the third terminal of the charging control circuit is electrically connected to the first terminal of the target power bank. The reverse power supply protection circuit is used to shut down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command issued by the cabinet when it receives the first control command. The first power supply path is the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit. The first control command is used to indicate that the cabinet is currently in an external power supply state. The charging control circuit is used to perform a first charging operation on the target power bank according to the first control command and a preset second power supply path when the first control command is received; the second power supply path is the path through which the power supply of the cabinet supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank.

2. The reverse power feedback protection device for a power bank used in the wilderness according to claim 1, characterized in that, The reverse power supply protection circuit is also used to activate the first power supply path corresponding to the reverse power supply protection circuit according to the second control command issued by the cabinet when it receives the second control command. The charging control circuit is further configured to shut down the second power supply path according to the second control command when the second control command is received; The second control command is used to indicate that the cabinet is currently in a state without external power supply; The charging control circuit is also used to detect the type of the target power bank, wherein the power bank type includes a first type corresponding to the wilderness power bank or a second type corresponding to the ordinary power bank; The charging control circuit is further configured to, when the target power bank is detected to be of the first type, control the target power bank to perform a second charging operation on the cabinet according to the second control command and the first power supply path.

3. The reverse power feedback protection device for a power bank used in the wilderness according to claim 2, characterized in that, The reverse power supply protection circuit includes a first protection module, a second protection module, and a third protection module, wherein: The first end of the first protection module is electrically connected to the third end of the cabinet; the second end of the first protection module is electrically connected to the first end of the second protection module. The second terminal of the second protection module is electrically connected to the first terminal of the third protection module; the third terminal of the second protection module is electrically connected to the first terminal of the charging control circuit. The second end of the third protection module is electrically connected to the first end of the cabinet; the third end of the third protection module is electrically connected to the first end of the charging control circuit. And, the first protection module is used to switch the module state of the first protection module to the conduction state when it receives a first control command issued by the cabinet; The first protection module is further configured to switch the module state of the second protection module and the module state of the third protection module to the cut-off state after switching to the conduction state.

4. The reverse power feedback protection device for a power bank used in the wilderness according to claim 3, characterized in that, The first protection module is further configured to switch the module state of the first protection module to the off state when it receives a second control command issued by the cabinet and detects that the power bank type of the target power bank is the first type. The second protection module is used to switch the module state of the second protection module and the module state of the third protection module to the on state when it receives the second control command and detects that the target power bank is of the first type.

5. The reverse power feedback protection device for a power bank used in the wilderness according to claim 3 or 4, characterized in that, The first protection module includes a first transistor, a first voltage regulator, and a pull-up resistor, wherein: The first end of the first voltage-stabilizing resistor and the first end of the pull-up resistor are respectively electrically connected to the third end of the cabinet; the second end of the first voltage-stabilizing resistor is electrically connected to the base of the first transistor; the collector of the first transistor is electrically connected to the first end of the second protection module of the second protection module; the emitter of the first transistor and the second end of the pull-up resistor are both used for grounding.

6. The reverse power feedback protection device for a power bank used in the wilderness according to claim 5, characterized in that, The second protection module includes a second transistor, a third transistor, a first voltage divider resistor, and a second voltage divider resistor, wherein: The collector of the first transistor is electrically connected to the base of the second transistor, the base of the third transistor, the first end of the first voltage divider resistor, and the first end of the second voltage divider resistor, respectively; the second end of the first voltage divider resistor is electrically connected to the first end of the charging control circuit. The collectors of the second transistor and the third transistor are both electrically connected to the first terminal of the third protection module; The emitter of the second transistor, the emitter of the third transistor, and the second terminal of the second voltage divider resistor are all used for grounding.

7. The reverse power feedback protection device for a power bank used in the wilderness according to claim 6, characterized in that, The third protection module includes a first MOSFET, a second voltage-regulating resistor, and a third voltage-regulating resistor, wherein: The collector of the second transistor is electrically connected to the first terminal of the second voltage-regulating resistor and the gate of the first MOS transistor, respectively; the collector of the third transistor is electrically connected to the first terminal of the third voltage-regulating resistor and the gate of the second MOS transistor, respectively. The second terminal of the second voltage-regulating resistor and the source of the first MOSFET are both electrically connected to the first terminal of the cabinet; the drain of the first MOSFET is electrically connected to the source of the second MOSFET; the drain of the second MOSFET and the second terminal of the third voltage-regulating resistor are both electrically connected to the first terminal of the charging control circuit.

8. The reverse power feedback protection device for a power bank used in the wilderness according to claim 7, characterized in that, The charging control circuit includes a charging control interface, a first diode, and a second diode, wherein: The first end of the charging control interface is used to electrically connect to the first end of the target power bank; the second end of the charging control interface is electrically connected to the second end of the first voltage divider resistor, the second end of the third voltage regulator resistor, the drain of the second MOS transistor, the cathode of the first diode, and the cathode of the second diode. The positive terminals of the first diode and the second diode are both used for electrical connection to the second end of the cabinet.

9. A method for reverse power feedback protection of a power bank used in the field, characterized in that, The method is applied to a reverse power supply protection device for a power bank used in the field. The device includes at least a reverse power supply protection circuit and a charging control circuit, wherein: a first terminal of the reverse power supply protection circuit is electrically connected to a first terminal of a cabinet; a second terminal of the reverse power supply protection circuit is electrically connected to a first terminal of the charging control circuit; a second terminal of the charging control circuit is electrically connected to a second terminal of the cabinet; and a third terminal of the charging control circuit is electrically connected to a first terminal of the target power bank. The method includes: When the reverse power supply protection circuit receives a first control command issued by the cabinet, it shuts down the first power supply path corresponding to the reverse power supply protection circuit according to the first control command. The first power supply path is the path through which the target power bank supplies power to the cabinet via the charging control circuit and the reverse power supply protection circuit. The first control command is used to indicate that the cabinet is currently in an external power supply state. When the charging control circuit receives the first control command, it performs a first charging operation on the target power bank according to the first control command and a preset second power supply path; the second power supply path is the path through which the power supply of the cabinet supplies power to the target power bank via the charging control circuit; the target power bank includes a portable power bank or a regular power bank.

10. The reverse power feedback protection method for a power bank used in wilderness areas according to claim 9, characterized in that, The method further includes: When the reverse power supply protection circuit receives a second control command issued by the cabinet, the first power supply path corresponding to the reverse power supply protection circuit is activated according to the second control command. When the charging control circuit receives the second control command, it shuts down the second power supply path according to the second control command; the second control command is used to indicate that the cabinet is currently in a state without external power supply. The charging control circuit detects the type of the target power bank, and the power bank type includes a first type corresponding to the wilderness power bank or a second type corresponding to the ordinary power bank; When the charging control circuit detects that the target power bank is of the first type, it controls the target power bank to perform a second charging operation on the cabinet according to the second control command and the first power supply path.

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