Power supply circuit of mobile power supply expansion module and mobile power supply equipment

Abstract

The invention discloses a power supply circuit of a mobile power supply extension module and mobile power supply equipment. The mobile power supply base power supply circuit comprises n mobile power supplies and a base, the base comprises a first control module, and the mobile power supplies are connected with the base through interface modules; wherein n is a positive integer greater than or equal to 2; the mobile power supply is used for outputting first voltage; the first voltage is used for driving a first control module of the base to be powered on; the first control module is used for determining the main mobile power supply according to the connection sequence or position information of the mobile power supplies and the base and controlling the main mobile power supply to output electric energy. According to the mobile power supply base power supply circuit provided by the invention, a user can conveniently replace the mobile power supply, and power failure is avoided in the replacement process, so that output interruption caused by removal of the mobile power supply which is supplying power, insufficient electric quantity or fault is avoided; the problem that the reliability is poor when the mobile power supply supplies power to the load through the base can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile power supplies, and in particular to a power supply circuit of a mobile power supply extension module and a mobile power supply device. Background Art

[0002] A mobile power bank is a portable device that stores a large amount of electrical energy and can quickly power various instruments and equipment. It is widely used in electronic products such as smartphones, tablets, and laptops.

[0003] In the scenario of replacing a mobile power bank, the existing technology has the problem of poor power supply continuity. When the mobile power bank is low on power or has other problems and cannot continue to supply power, users usually have no choice but to disconnect the mobile power bank from its powered device and then replace it with another mobile power bank. In this process, the powered device may lose data or shut down due to reconnection. In addition, for electronic devices that need to maintain a stable and continuous power supply, reconnection will cause a greater impact, but it cannot be avoided.

[0004] Secondly, with the continuous improvement of mobile power technology, users can connect more and more power-consuming devices, and the realization of various functions is becoming increasingly rich. These changes have led to an increase in power consumption, which has caused users to replace mobile power supplies more frequently. Each time the mobile power supply is reconnected to the power-consuming device, the interface needs to be plugged in and out. Long-term frequent operation will wear out the interface components, which may easily lead to a decrease in the life of the interface components, poor contact or connection failure, and even cause risks such as interface damage or short circuit, which will affect the charging performance of the mobile power supply for the power-consuming device. That is, when the mobile power supply in the prior art supplies power to the load, there is a problem of low reliability. Summary of the invention

[0005] The present invention provides a power supply circuit and a mobile power supply device of a mobile power supply extension module to solve the problem of poor reliability caused by connection interruption and interface wear when the mobile power supply supplies power to the load through a base. The present invention sets up multiple mobile power supplies to work in conjunction with the power supply extension module. When any mobile power supply is insufficient in power or has other problems and is insufficient to continue to supply power, the user only needs to replace the corresponding mobile power supply. During the replacement process, as long as there is at least one mobile power supply on the power supply extension module, the overall power supply to the device will not be interrupted. The present invention can realize that when multiple mobile power supplies are connected to the power supply extension module, the power supply extension module automatically identifies, switches, and controls their connection status, and intelligently selects and switches the appropriate mobile power supply. There is no need for traditional connection methods such as wiring harness connection, and there is no need for traditional operations such as physical buttons and manual operations, which effectively avoids power supply interruptions or instability and improves reliability.

[0006] According to one aspect of the present invention, a power supply circuit of a mobile power supply extension module is provided, comprising: n mobile power supplies and a base, the base comprising a first control module, the mobile power supply being connected to the base via an interface module; wherein n is a positive integer greater than or equal to 2;

[0007] The mobile power supply is used to output a first voltage; the first voltage is used to drive the first control module of the base to power on; the first control module is used to automatically identify the connection status of the base and the mobile power supply, determine the main mobile power supply according to the order or position information of the connection between the mobile power supply and the base, and control the main mobile power supply to output electric energy, and control the power supply switching between the main mobile power supply and the slave mobile power supply when the main mobile power supply is removed, low on power or fails.

[0008] According to another aspect of the present invention, there is provided a mobile power supply device, comprising the mobile power base power supply circuit according to any embodiment of the present invention.

[0009] The technical solution of the embodiment of the present invention is that when n mobile power supplies are connected to the base, the main mobile power supply is determined through the first control module, and the main mobile power supply is controlled to output power to the base, thereby solving the problem of poor reliability when the mobile power supply supplies power to the load through the base. When multiple mobile power supplies are connected to the base, the mobile power base of the present invention can automatically identify the connection status without relying on wire harness switching and physical buttons, and without manual intervention, and can intelligently select a suitable main power supply for power supply, thereby avoiding power supply interruption or instability caused by improper connection. This setting greatly simplifies the operation process of power connection, reduces the maintenance cost and inconvenience caused by factors such as wire harness aging and physical button failure, effectively improves the stability of the mobile power supply to the base, and ensures that the base can obtain a reliable power supply.

[0010] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A schematic diagram of the structure of a power supply circuit of a mobile power supply extension module provided in an embodiment of the present invention;

[0013] Figure 2 A schematic diagram of the structure of a power supply circuit of another mobile power supply extension module provided in an embodiment of the present invention;

[0014] Figure 3 A schematic diagram of the structure of a power supply circuit of another mobile power supply extension module provided in an embodiment of the present invention;

[0015] Figure 4 A schematic diagram of the structure of a mobile power supply provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0017] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] Figure 1 This is a schematic diagram of the structure of a power supply circuit of a mobile power supply expansion module provided by an embodiment of the present invention. This embodiment is applicable to the case where a mobile power supply is used to supply power to an AC device. Figure 1As shown, the circuit includes: n mobile power supplies 110 and a base 120, the base 120 includes a first control module 130, and the mobile power supply 110 is connected to the base 120 through an interface module 140; wherein n is a positive integer greater than or equal to 2; the mobile power supply 110 is used to output a first voltage; the first voltage is used to drive the first control module 130 of the base 120 to power on; the first control module 130 is used to automatically identify the connection status between the base and the mobile power supply, determine the main mobile power supply according to the order or position information of the connection between the mobile power supply 110 and the base 120, and control the main mobile power supply to output electric energy, and control the power supply switching between the main mobile power supply and the slave mobile power supply when the main mobile power supply is removed, insufficient or faulty.

[0019] Specifically, the mobile power supply 110 refers to a portable battery device that is specifically used to provide power to various electronic devices. A battery pack is usually provided inside the mobile power supply 110 to store and release power. The base 120 refers to an expansion device of the mobile power supply 110, which can connect the mobile power supply 110 to other electronic devices. Exemplarily, the base 120 can invert the DC power output by the mobile power supply 110 into AC power, thereby powering the AC device.

[0020] The first control module 130 refers to a component in the base 120 that is responsible for managing and controlling the power output of the mobile power 110. After the mobile power 110 is connected to the base 120, the mobile power 110 can power on the first control module 130 in the base 120. After the first control module 130 is powered on, it can determine the number of mobile power supplies 110 connected to the base 120, and then determine the main mobile power supply, and control the main mobile power supply to output power to the base 120. The main mobile power supply refers to the mobile power supply 110 that continuously supplies power to the base 120.

[0021] For example, in the embodiment of the present invention, the number of mobile power supplies 110 is greater than or equal to 2, and the mobile power supply 110 connected to the base 120 first can be used as the main mobile power supply; if all mobile power supplies 110 are connected to the base 120 at the same time, the mobile power supply 110 connected to the base 120 through the designated position can be used as the main mobile power supply. The first voltage refers to the voltage output by the mobile power supply 110, which can power on the first control module 130. For example, the first voltage can be 3.3V.

[0022] The interface module 140 refers to an interface for connecting the mobile power supply 110 and the base 120, and the mobile power supply 110 exchanges data or transmits power to the base 120 through the interface module 140. Exemplarily, the interface module 140 can be designed in the form of pogo pins, which allows the mobile power supply 110 to be reliably electrically connected to the base 120 through elastic pin contacts to ensure stable power transmission and signal interaction.

[0023] In the embodiment of the present invention, the mobile power supply 110 is connected to the base 120 through the interface module 140. When the mobile power supply 110 is connected to the base 120, it will output a first voltage to power on the first control module 130 in the base 120, thereby realizing information interaction between the mobile power supply 110 and the first control module 130. The first control module 130 determines the main mobile power supply according to the order or position information of the mobile power supply 110 connected to the base 120, and controls the main mobile power supply to supply power to the base 120. Among them, only the main mobile power supply can continuously output power to supply power to the base 120, and the power output of other mobile power supplies will stop after information interaction with the first control module 130.

[0024] The technical solution of the embodiment of the present invention is that when n mobile power supplies are connected to the base, the main mobile power supply is determined through the first control module, and the main mobile power supply is controlled to output power to the base, thereby solving the problem of poor reliability when the mobile power supply supplies power to the load through the base. When multiple mobile power supplies are connected to the base, the mobile power base of the present invention can automatically identify the connection status without relying on wire harness switching and physical buttons, and without manual intervention, and can intelligently select a suitable main power supply for power supply, thereby avoiding power supply interruption or instability caused by improper connection. This setting greatly simplifies the operation process of power connection, reduces the maintenance cost and inconvenience caused by factors such as wire harness aging and physical button failure, effectively improves the stability of the mobile power supply to the base, and ensures that the base can obtain a reliable power supply.

[0025] A power supply circuit of a mobile power supply expansion module is based on the above embodiments and continues to refer to Figure 1 Optionally, the n mobile power supplies 110 include 1 master mobile power supply and n-1 slave mobile power supplies; the master mobile power supply is the mobile power supply 110 that first communicates and identifies with the base 120, or the master mobile power supply is the mobile power supply 110 plugged into the target interface of the base 120.

[0026] Specifically, the slave mobile power source refers to a mobile power source that is connected to the base 120, but only supplies power to the first control module 130 during information interaction with the base 120, and stops supplying power when the master mobile power source continues to supply power to the base 120. The target interface refers to an interface at a specified position in the interface module 140.

[0027] For example, Figure 2 A schematic diagram of the structure of a power supply circuit of another mobile power supply extension module provided in an embodiment of the present invention. Figure 2The example shows that the mobile power base power supply circuit includes two mobile power supplies 110. One is a master mobile power supply and the other is a slave mobile power supply. The number of mobile power supplies can be set as needed and is not limited here.

[0028] In the embodiment of the present invention, if n mobile power supplies 110 are not connected to the base 120 at the same time, the one that is first connected to the base 120 is the master mobile power supply, and the other mobile power supplies 110 are slave mobile power supplies; if n mobile power supplies 110 are connected to the base 120 at the same time, the mobile power supply 110 connected to the target interface is designated as the master mobile power supply, and the other mobile power supplies 110 are slave mobile power supplies.

[0029] Optionally, based on the above embodiments, continue to refer to Figure 1 , when the main mobile power source is removed, the first control module 130 controls the i-th slave mobile power source to output power; i is an integer greater than or equal to 1 and less than n-1. When the i-th slave mobile power source is removed, the first control module 130 controls the i+1-th slave mobile power source to output power.

[0030] In an embodiment of the present invention, if the main mobile power supply that is currently supplying power to the base 120 is removed from the base 120 due to a fault, insufficient power, or other needs of the user, the first control module 130 can control the i-th slave mobile power supply to continue to output power to the base 120; if the slave mobile power supply that is currently supplying power is also removed, the first control module 130 can continue to control the next slave mobile power supply to continue to output power, and thus control the output of power from the slave mobile power supplies to the base 120 in sequence until the last slave mobile power supply is removed.

[0031] The technical solution of the embodiment of the present invention solves the problem of power supply interruption caused by failure or removal of the main power supply after the mobile power supply is connected to the base by controlling the i-th slave mobile power supply to continue to output power to the base after the main mobile power supply is removed, and by continuing to control the i+1-th slave mobile power supply to output power after the mobile power supply is removed. In addition, the mobile power base power supply circuit provided by the present invention can facilitate users to replace the mobile power supply without power outage during the replacement process, and can intelligently select a suitable main power supply for power supply, thereby avoiding output interruption caused by removing the mobile power supply that is currently supplying power. The present invention can ensure that the base always obtains a stable power supply, thereby ensuring the stability and continuity of the power supply of the base, and realizing continuous power supply of the base to non-resistive loads.

[0032] Optionally, based on the above embodiments, continue to refer to Figure 1The base 120 also includes: an auxiliary power supply 150; the auxiliary power supply 150 is connected to the first control module 130, and the auxiliary power supply 150 is used to output a second voltage after the first control module 130 is powered on, and the second voltage is used to power the base 120; the second voltage is higher than the first voltage, and the mobile power supply 110 is used to stop supplying power to the first control module 130 after the auxiliary power supply 150 outputs the second voltage.

[0033] Specifically, the auxiliary power supply 150 refers to an independent power supply module in the power supply circuit of the mobile power base, which is used to provide power to the functional modules in the base 120 including the first control module 130. The second voltage refers to the voltage output by the auxiliary power supply 150, which is higher than the first voltage. The auxiliary power supply 150 is connected to the mobile power supply 110 through the interface module 140.

[0034] In the embodiment of the present invention, the first control module 130 is connected to the mobile power supply 110 through the interface module 140. After the main mobile power supply outputs the first voltage to power on the first control module 130, the first control module 130 generates an enable signal to turn on the switch module 112 inside the main mobile power supply to output power to the base 120. When the power module on the base 120 is started, the auxiliary power supply 150 generates a second voltage. The second voltage can supply power to the first control module 130 on the base 120. Since the second voltage is higher than the first voltage, after the auxiliary power supply 150 outputs the second voltage, the main mobile power supply stops supplying power to the first control module 130, and the auxiliary power supply 150 supplies power to the first control module 130.

[0035] When the main mobile power source is removed, the main mobile power source cannot provide power to the base 120, and the first voltage output by the main mobile power source and the second voltage output by the auxiliary power source 150 both disappear. However, since the slave mobile power source is connected to the base 120, the slave mobile power source can output the first voltage to continue to supply power to the first control module 130, and then the first control module 130 generates an enable signal to control the slave mobile power source to turn on the switch module 112 and output power to the base 120. When the power module on the base 120 is started, the auxiliary power source 150 generates the second voltage.

[0036] The second voltage can supply power to the first control module 130 on the base 120. Since the second voltage is higher than the first voltage, after the auxiliary power supply 150 outputs the second voltage, the mobile power supply stops supplying power to the first control module 130, and the auxiliary power supply 150 supplies power to the first control module 130. At this time, if the base 120 is connected to a non-resistive load, the power supply from the base 120 to the load will not be interrupted.

[0037] The embodiment of the present invention can effectively ensure the power supply stability of the base after the main mobile power supply is removed by outputting the second voltage through the auxiliary power supply. Even if the main mobile power supply is removed, resulting in the disappearance of the first voltage provided by the main mobile power supply and the second voltage provided by the auxiliary power supply, the first control module can still continue to obtain power from the mobile power supply, so that the auxiliary power supply continues to work, thereby ensuring that the operation of the base is not affected. The present invention can ensure the continuous power supply of the base, that is, ensure the power supply stability and reliability of the power supply circuit of the mobile power base.

[0038] Figure 3 A schematic diagram of the structure of a power supply circuit of another mobile power supply expansion module provided in an embodiment of the present invention. Optionally, based on the above embodiments, Figure 3 As shown, the mobile power supply 110 includes: a battery pack 116, a power management module 111 and a second control module 113; the battery pack 116 is connected to the power management module 111, and the power management module 111 is used to manage the power output of the battery pack of the mobile power supply 110; the second control module 113 is connected to the power management module 111, and the second control module 113 is used to generate an enable signal according to the connection status of the mobile power supply 110 and the base 120.

[0039] Specifically, the power management module 111 refers to a module responsible for managing the power output of the mobile power supply 110. Under the control of the second control module 113, the power management module 111 can monitor the power of the mobile power supply 110 and control it to output a first voltage to ensure the stability and safety of the output of the mobile power supply 110. The battery pack 116 refers to a battery system for storing power in the mobile power supply 110. Exemplarily, the battery pack 116 may include a lithium battery. The enable signal refers to a control signal. In an embodiment of the present invention, the enable signal generated by the second control module 113 includes a first enable signal and a second enable signal.

[0040] In the embodiment of the present invention, under the control of the second control module 113 , the power management module 111 can enable the battery pack 116 to release the stored electric energy to output the first voltage to power the base 120 .

[0041] Figure 4 A schematic diagram of a mobile power supply provided by an embodiment of the present invention is provided. Based on the above embodiments, Figure 4As shown, the mobile power supply 110 also includes: a switch module 112, the switch module 112 is connected between the battery management module 111 and the interface module 140, and the control end of the switch module 112 is connected to the enable end of the second control module 113; when the mobile power supply 110 is connected to the base 120 through the interface module 140, the second control module 113 is used to generate a first enable signal according to the connection status of the mobile power supply 110 and the base 120; the switch module 112 is used to be turned on according to the first enable signal, and the second control module 113 is used to communicate with the base 120 and control the base 120 to output electric energy; when the mobile power supply 110 is disconnected from the base 120, the second control module 113 is used to generate a second enable signal according to the disconnection status of the mobile power supply 110 and the base 120; the switch module 112 is used to be turned off according to the second enable signal.

[0042] Specifically, the switch module 112 refers to a component in the power supply circuit of the mobile power base that is used to control the on and off of the current. The first enable signal refers to a signal generated by the second control module 113, which is used to instruct the switch module 112 to be turned on, thereby realizing the function of the mobile power 110 outputting electric energy to the base 120. The second enable signal refers to a signal generated by the second control module 113 when the mobile power 110 is disconnected from the base 120, which is used to instruct the switch module 112 to be turned off and stop the power output of the mobile power 110.

[0043] In the embodiment of the present invention, the second control module 113 can control the on and off of the switch module 112. When the mobile power supply 110 is connected to the base 120, the second control module 113 can send a first enable signal to control the switch module 112 to be turned on, so that the power in the mobile power supply 110 can be transmitted to the base 120. When the mobile power supply 110 and the base 120 are disconnected, the second control module 113 sends a second enable signal to control the switch module 112 to be turned off, so that the power transmission of the mobile power supply 110 stops.

[0044] For example, if the mobile power source 110 is removed from the base 120 and its power output is not cut off in time, the output port of the mobile power source 110 may still be in a power supply state, in which case there is a risk of electric shock and electrical safety. However, in the embodiment of the present invention, the second control module 113 can send a second enable signal to control the switch module 112 to disconnect, so that the mobile power source 110 stops transmitting power to the outside, thereby improving the power supply safety of the mobile power source 110.

[0045] The technical solution of the embodiment of the present invention controls the power transmission between the mobile power supply and the base by turning on and off the switch module, which can ensure that current flows only after the mobile power supply and the base are correctly connected, thereby improving the safety and reliability of the power supply circuit of the mobile power supply base.

[0046] Optionally, based on the above embodiment, continue to refer to Figure 3 The mobile power supply 110 also includes: a communication module 114 and a second electrostatic protection module 115; the second control module 113 is connected to the communication module 114 and the power management module 111, and the second control module 113 is used to control the mobile power supply 110 to output the first voltage and control the mobile power supply 110 to stop supplying power to the first control module 130; the second electrostatic protection module 115 is connected to the second control module 113, the communication module 114 and the interface module 140, and the second electrostatic protection module 115 is used to suppress the electrostatic voltage; the communication module 114 is used to exchange information between the mobile power supply 110 and the base 120.

[0047] Specifically, the second control module 113 refers to the core control unit of the mobile power supply 110 , which is responsible for coordinating the modules of the mobile power supply 110 , controlling them to output the first voltage, and stopping the power supply to the first control module 130 when necessary.

[0048] The communication module 114 refers to a module for information exchange between the mobile power supply 110 and the base 120. For example, the mobile power supply 110 and the base 120 can communicate through a serial port. The communication module 114 can transmit the power supply status, fault information, etc. of the base 120 to ensure the coordinated operation of various parts of the mobile power supply base power supply circuit.

[0049] The second electrostatic protection module 115 refers to a module disposed on the mobile power supply 110 specifically for suppressing electrostatic voltage. Exemplarily, the second electrostatic protection module 115 may include a Semtech ESDA6 series diode, etc. The second electrostatic protection module 115 can protect the circuit in the mobile power supply 110 from the influence of electrostatic discharge, thereby improving the safety and durability of the system.

[0050] In the embodiment of the present invention, when the mobile power supply 110 is connected to the base 120, the communication module 114 first interacts with the base 120, and feeds back the information of the base 120 to the second control module 113. Then the second control module 113 controls the power management module 111 to output the first voltage, which is transmitted to the base 120 through the second electrostatic protection module 115.

[0051] Optionally, based on the above embodiment, continue to refer to Figure 3 The interface module 140 includes: a male connector 142 and a female connector 141; the male connector 142 is arranged on the base 120, and the female connector 141 is arranged on the mobile power supply 110, and the female connector 141 and the male connector 142 can be plugged in.

[0052] Specifically, the male connector 142 refers to a part of the interface module 140, and generally refers to a connector with a protrusion or a pin. The female connector 141 refers to a part of the interface module 140, and generally refers to a connector with a hole or a slot. The male connector 142 and the female connector 141 match and can perform physical connection and disconnection operations, thereby realizing the transmission of current and control signals. This design simplifies the connection process of the device and improves the convenience of use.

[0053] Optionally, based on the above embodiment, continue to refer to Figure 3 The base 120 also includes: a first electrostatic protection module 121, a unidirectional conduction module 122, a power management module 123 and an inverter module 124; the first electrostatic protection module 121 is connected to the interface module 140 to suppress the electrostatic voltage; the unidirectional conduction module 122 is connected to the first electrostatic protection module 121 and the first control module 130 to limit the current flow direction; the power management module 123 is connected to the first control module 130, the first electrostatic protection module 121, the inverter module 124 and the auxiliary power supply 150 to distribute the electric energy of the base 120; the input end of the inverter module 124 is connected to the power management module 123, the output end of the inverter module 124 is connected to the load 160, the control end of the inverter module 124 is connected to the first control module 130, and the inverter module 124 is used to convert the direct current output by the mobile power supply 110 into alternating current.

[0054] Specifically, the first electrostatic protection module 121 refers to a component in the base 120 for suppressing electrostatic voltage. The unidirectional conduction module 122 refers to a module composed of diodes, which can limit the direction of current flow to only from the first electrostatic protection module 121 to the first control module 130, thereby preventing current backflow. Among them, the unidirectional conduction module 122 can include multiple diode units, and each mobile power supply 110 corresponds to a diode unit. The power management module 123 refers to a module responsible for the distribution and management of power in the base 120. The power management module 123 can intelligently distribute the power of the base 120 according to the load demand and power supply status to ensure the normal operation of each module. The inverter module 124 refers to the module on the base 120 responsible for converting direct current into alternating current. Its main job is to receive direct current from the mobile power supply 110 and convert it into alternating current that can be used by alternating current devices. The load 160 refers to a device connected to the base 120. Exemplarily, the load 160 is an electronic device that requires alternating current.

[0055] In an embodiment of the present invention, when the mobile power supply 110 supplies power to the base 120, the electric energy output by the mobile power supply 110 enters the base 120 through the first electrostatic protection module 121, and the power management module 123 distributes the input electric energy, wherein a part of the electric energy is distributed to the auxiliary power supply 150 for supplying power to the base 120, and a part of the electric energy is distributed to the inverter module 124. The inverter module 124 converts the direct current output by the mobile power supply 110 into alternating current for supplying power to the AC load connected to the base 120.

[0056] In an embodiment of the present invention, optionally, an interface output module may be provided on the base 120, and the load 160 is connected to the base 120 through the interface output module. Specifically, the interface output module refers to an interface on the base 120 connected to the load 160, and the interface output module supports different interface types, so that the mobile power supply 110 can be effectively and flexibly connected and powered with a variety of devices through the base 120, solving the problem of being unable to charge different devices due to the single interface of the mobile power supply 110, improving the practicality and adaptability of the power supply circuit of the mobile power base, and making it more convenient for users to use. Exemplarily, the interface types of the interface output module may include an AC output interface, a Type-C interface, a USB-A interface, and a DC output interface, etc., so that the mobile power supply can supply power to a variety of devices such as DC devices or AC devices through the base, and no limitation is made here.

[0057] The technical solution of the embodiment of the present invention converts the direct current provided by the mobile power supply into alternating current through the base, so that the mobile power supply can not only power direct current devices, but also support electronic devices that require alternating current. The present invention can improve the compatibility and functionality of the mobile power supply, and effectively expand the use scenarios of the mobile power supply.

[0058] Based on the above embodiments, the present invention also provides a mobile power supply device, which includes the power supply circuit of the mobile power supply extension module provided by any of the above embodiments, and has the corresponding functional modules and beneficial effects of the mobile power base power supply circuit.

[0059] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0060] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power supply circuit for a mobile power supply extension module, characterized in that: include: n mobile power supplies and a base, the base comprising a first control module, the mobile power supply being connected to the base via an interface module; wherein n is a positive integer greater than or equal to 2; The mobile power supply is used to output a first voltage; the first voltage is used to drive the first control module of the base to power on; the first control module is used to automatically identify the connection status of the base and the mobile power supply, determine the main mobile power supply according to the order or position information of the connection between the mobile power supply and the base, and control the main mobile power supply to output electric energy, and control the power supply switching between the main mobile power supply and the slave mobile power supply when the main mobile power supply is removed, low on power or fails.

2. The mobile power base power supply circuit according to claim 1, characterized in that: The n mobile power supplies include 1 master mobile power supply and n-1 slave mobile power supplies; The main mobile power source is the mobile power source that first communicates and identifies with the base, or the main mobile power source is the mobile power source that is plugged into the target interface of the base.

3. The mobile power base power supply circuit according to claim 2, characterized in that: When the main mobile power source is removed, the first control module controls the i-th slave mobile power source to output power; i is an integer greater than or equal to 1 and less than n-1; When the i-th slave mobile power source is removed, the first control module controls the (i+1)-th slave mobile power source to output electric energy.

4. The mobile power base power supply circuit according to claim 1, characterized in that: The base also includes: an auxiliary power supply; The auxiliary power supply is connected to the first control module, and the auxiliary power supply is used to output a second voltage after the first control module is powered on, and the second voltage is used to power the base; The second voltage is higher than the first voltage, and the mobile power supply is used to stop supplying power to the first control module after the auxiliary power supply outputs the second voltage.

5. The mobile power base power supply circuit according to claim 1, characterized in that: The mobile power supply comprises: a battery pack, a power management module and a second control module; The battery pack is connected to the power management module, and the power management module is used to manage the power output of the battery pack of the mobile power supply; The second control module is connected to the power management module, and the second control module is used to generate an enable signal according to the connection status between the mobile power source and the base.

6. The mobile power base power supply circuit according to claim 5, characterized in that: The mobile power supply also includes: A switch module, wherein the switch module is connected between the battery management module and the interface module, and a control end of the switch module is connected to an enable end of the second control module; When the mobile power source is connected to the base through the interface module, the second control module is used to generate a first enable signal according to the connection state between the mobile power source and the base; the switch module is used to be turned on according to the first enable signal and control the base to output power; When the mobile power source is disconnected from the base, the second control module is used to generate a second enable signal according to the disconnection state of the mobile power source and the base; and the switch module is used to shut down according to the second enable signal.

7. The mobile power base power supply circuit according to claim 5, characterized in that: The mobile power supply further includes: a communication module and a second electrostatic protection module; The second control module is connected to the communication module and the power management module, and the second control module is used to control the mobile power supply to output the first voltage and control the mobile power supply to stop supplying power to the first control module; The second electrostatic protection module is connected to the second control module, the communication module and the interface module, and the second electrostatic protection module is used to suppress electrostatic voltage; The communication module is used for information exchange between the mobile power source and the base.

8. The mobile power base power supply circuit according to claim 1, characterized in that: The interface module includes: a male connector and a female connector; The male connector is arranged on the base, the female connector is arranged on the mobile power source, and the female connector and the male connector can be plugged in.

9. The mobile power base power supply circuit according to claim 4, wherein the base further comprises: A first electrostatic protection module, a unidirectional conduction module, a power management module and an inverter module; The first electrostatic protection module is connected to the interface module and is used to suppress electrostatic voltage; The one-way conduction module is connected to the first electrostatic protection module and the first control module, and is used to limit the current flow direction; The power management module is connected to the first control module, the first electrostatic protection module, the inverter module and the auxiliary power supply, and is used to distribute the electric energy of the base; The input end of the inverter module is connected to the power management module, the output end of the inverter module is connected to the load, the control end of the inverter module is connected to the first control module, and the inverter module is used to convert the direct current output by the mobile power supply into alternating current.

10. A mobile power supply device, characterized in that: It comprises the mobile power base power supply circuit as described in any one of claims 1 to 9.

Images