Energy storage power supply

Abstract

The utility model discloses an energy storage power supply. The energy storage power supply comprises a battery management system, a battery module, an electric energy management module and a first interface, the battery management system is connected with the battery module, the electric energy management module and the first interface, the first interface is connected with the electric energy management module, and the first interface is used for being connected with a first energy storage power supply. And when the energy storage power supply is a second energy storage power supply for charging the first energy storage power supply, the battery management system is used for controlling the electric energy management module to output the electric energy of the battery module, and the electric energy output by the battery module is matched with the parameters of the first energy storage power supply. And when the energy storage power supply is a third energy storage power supply charged by the first energy storage power supply, the battery management system is used for controlling the electric energy management module to charge the battery module by using the electric energy output by the first energy storage power supply, and the electric energy output by the first energy storage power supply is matched with the parameters of the third energy storage power supply. According to the energy storage power supply, energy sharing of the two energy storage power supplies can be realized, and the long-time and multi-device power utilization requirements of the energy storage power supply are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to an energy storage power supply. BACKGROUND

[0002] With the development of new energy industry and the continuous innovation of battery technology, people's demand for portable energy storage devices is increasing. Portable energy storage systems have been widely used in outdoor power supply, emergency power supply, mobile device charging and other scenarios. However, a single portable energy storage device often cannot meet the long-term and multi-device power demand. CONTENT

[0003] The present application provides an energy storage power supply to solve at least one of the above technical problems.

[0004] The energy storage power supply provided by the present application comprises a battery management system, a battery module, an electric energy management module and a first interface. The battery management system is connected with the battery module, the electric energy management module and the first interface. The first interface is connected with the electric energy management module. The first interface is used to connect with a first energy storage power supply.

[0005] When the energy storage power supply is a second energy storage power supply for charging the first energy storage power supply, the battery management system is used to control the electric energy management module to output the electric energy of the battery module. The output electric energy of the battery module is adapted to the parameters of the first energy storage power supply.

[0006] When the energy storage power supply is a third energy storage power supply charged by the first energy storage power supply, the battery management system is used to control the electric energy management module to charge the battery module with the electric energy output by the first energy storage power supply. The electric energy output by the first energy storage power supply is adapted to the parameters of the third energy storage power supply.

[0007] In the above energy storage power supply, the first interface can be connected with the first energy storage power supply. The battery management system is used to control the electric energy management module to output the electric energy of the battery module. The output electric energy of the battery module is adapted to the parameters of the first energy storage power supply, or to charge the battery module with the electric energy output by the first energy storage power supply. Thus, the function of charging one energy storage power supply with another energy storage power supply is realized. The energy of two energy storage power supplies is shared. The long-term and multi-device power demand of the energy storage power supply is met to a certain extent.

[0008] In some embodiments, the first interface comprises a photovoltaic interface. The electric energy management module comprises an inverter. The battery management system is connected with the first interface through the inverter.

[0009] In some embodiments, the inverter comprises a maximum power point tracking module, the maximum power point tracking module comprises a first DC-DC converter, the battery management system is connected with the first interface through the DC-DC converter, and the maximum power point tracking module is configured to control the output power of the battery module to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

[0010] In some embodiments, the inverter comprises a DC-AC converter, and the energy storage power supply further comprises an AC input interface and an AC output interface, and the DC-AC converter is connected with the AC input interface and the AC output interface.

[0011] In some embodiments, the first interface comprises a DC interface, the power management module comprises a DC management module, the battery management system is connected with the DC interface through the DC management module, and the DC management module is configured to control the output power of the battery module to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

[0012] In some embodiments, the DC interface comprises at least one of a Type-C interface, a USB interface, and a mini-USB interface.

[0013] In some embodiments, the first interface comprises a UART interface and / or a USB interface.

[0014] In some embodiments, the energy storage power supply comprises an input component configured to input a setting signal, and in response to the setting signal, the battery management system is configured to determine whether the energy storage power supply is the second energy storage power supply or the third energy storage power supply.

[0015] In some embodiments, the input component comprises a wireless connection module and / or a button, the wireless connection module is configured to be communicatively connected with a terminal device and receive the setting signal sent by the terminal device.

[0016] In some embodiments, in a case where the setting signal is not received after a preset time length in which the energy storage power supply and the first energy storage power supply establish a communication connection through the first interface, the battery management system is configured to determine whether the energy storage power supply is the second energy storage power supply or the third energy storage power supply according to a default setting.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0019] Figure 1 is a schematic diagram of a structure module of the energy storage power supply of the embodiments of the present application.

[0020] Explanation of main element reference numerals:

[0021] Energy storage power supply 100, battery management system 12, battery module 14, power management module 16, first interface 18, photovoltaic interface 20, inverter 22, maximum power point tracking module 24, first DC-DC converter 26, DC-AC converter 28, AC input interface 30, AC output interface 32, fuse 34, DC interface 36, DC management module 37, wireless connection module 38, second DC-DC converter 39, display module 40, switch-on button 42, AC switch button 44. DETAILED DESCRIPTION

[0022] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are for the purpose of explanation only, and are not to be understood as limiting the present application.

[0023] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the elements of the particular examples are described in the following disclosure. Of course, they are merely examples and are intended to be illustrative only and are not to be understood as limiting the present application. Furthermore, the present application can repeat the reference numerals and / or the reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and it is not to indicate the relationship between the various embodiments and / or the arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0024] In addition, the terms "first", "second", and the like, are used only for descriptive purposes, and are not to be construed as indicating or implying relative importance or an indicated number of the specified technical features. Thus, a feature defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0025] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] In the description of the present application, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Please refer to Figure 1 The energy storage power supply 100 of the embodiment of the present application includes a battery management system 12, a battery module 14, an electric energy management module 16 and a first interface 18. The battery management system 12 is connected with the battery module 14, the electric energy management module 16 and the first interface 18. The first interface 18 is connected with the electric energy management module 16. The first interface 18 is used to connect with the first energy storage power supply.

[0029] When the energy storage power supply 100 is a second energy storage power supply for charging the first energy storage power supply, the battery management system 12 is used to control the electric energy management module 16 to output the electric energy of the battery module 14. The output electric energy of the battery module 14 is adapted to the parameters of the first energy storage power supply.

[0030] When the energy storage power supply 100 is a third energy storage power supply charged by the first energy storage power supply, the battery management system 12 is configured to control the power management module 16 to charge the battery module 14 with the power output by the first energy storage power supply, and the power output by the first energy storage power supply is matched with the parameters of the third energy storage power supply.

[0031] In the energy storage power supply 100, the first interface 18 can be connected with the first energy storage power supply, and the battery management system 12 is configured to control the power management module 16 to output the power of the battery module 14, or charge the battery module 14 with the power output by the first energy storage power supply, so as to realize the function of charging one energy storage power supply by another energy storage power supply, realize the energy sharing of two energy storage power supplies, and meet the power demand of the energy storage power supply 100 for a long time and multiple devices to a certain extent.

[0032] Specifically, the energy storage power supply 100 and the first energy storage power supply can be energy storage power supplies 100 of different energy storage brands, or energy storage power supplies 100 of different energy storage systems (including mismatched battery capacity and mismatched battery voltage), and energy sharing can be performed between the energy storage power supply 100 and the first energy storage power supply. In an embodiment, the energy storage power supply 100 is a second energy storage power supply, and the second energy storage power supply charges the first energy storage power supply. In an embodiment, the energy storage power supply 100 is a third energy storage power supply, and the first energy storage power supply charges the third energy storage power supply. Whether the energy storage power supply 100 is the second energy storage power supply or the third energy storage power supply can be determined according to a default setting or user selection.

[0033] The battery management system 12 (Battery Management System, BMS) is a module for monitoring, protecting and managing the battery module 14. Specifically, the battery management system 12 can collect parameters such as voltage, current and temperature of the battery cell in real time, prevent potential safety hazards such as overcharging, overdischarging and overheating, and prolong the service life of the battery cell by dynamically adjusting the charging and discharging process. The battery management system 12 can also estimate the remaining capacity (SOC) and health status (SOH) of the battery cell, and provide a basis for energy management. The battery management system 12 can also solve the inconsistency between the battery cells through balancing technology and improve the overall performance. The battery management system 12 can also communicate with the power management module 16 and the first interface 18 to realize energy sharing with other energy storage power supplies 100.

[0034] The battery module 14 is a component for storing power of the energy storage power supply 100. The battery module 14 can include a plurality of battery cells, which can be connected in series, in parallel or in a mixed manner. The mixed connection means that there are both series connection and parallel connection between the plurality of battery cells.

[0035] The first interface 18 can be an interface for connecting the energy storage power supply 100 and the first energy storage power supply. Specifically, the first energy storage power supply can include the first interface 18, and the first interface 18 of the energy storage power supply 100 and the first interface 18 of the first energy storage power supply can be connected through the power supply line. Alternatively, in an embodiment, the first interface 18 can also be an interface for connecting the energy storage power supply 100 and the load, and the energy storage power supply 100 can output electric energy through the first interface 18 to supply power to the load. Alternatively, in an embodiment, the first interface 18 can also be an interface for charging the energy storage power supply 100 by the external power supply, and the external power supply can input electric energy to the energy storage power supply 100 through the first interface 18 to charge the battery module 14.

[0036] The energy storage power supply 100 can include one or more first interfaces 18, and the functions of all the first interfaces 18 can be the same, different, or partially the same and partially different. The forms of the first interface 18 include but are not limited to a socket, a slot, a plug, a coil (for outputting electric energy to the outside when wirelessly charging and for receiving electric energy from the external power supply), and the like.

[0037] When the energy storage power supply 100 is a second energy storage power supply for charging the first energy storage power supply, the battery management system 12 is configured to control the electric energy management module 16 to output electric energy of the battery module 14, and the output electric energy of the battery module 14 is adapted to the parameters of the first energy storage power supply, so that the second energy storage power supply can charge the first energy storage power supply. Alternatively, in an embodiment, when the SOC of the first energy storage power supply is the same as the SOC of the second energy storage power supply, the battery management system 12 can control the electric energy management module 16 to stop outputting electric energy, so as to stop charging the first energy storage power supply. Alternatively, in an embodiment, when the SOC of the first energy storage power supply reaches a first set SOC (e.g., 100%), the battery management system 12 can control the electric energy management module 16 to stop outputting electric energy, so as to stop charging the first energy storage power supply. Alternatively, in an embodiment, when the SOC of the second energy storage power supply reaches a second set SOC, the battery management system 12 can control the electric energy management module 16 to stop outputting electric energy, so as to stop charging the first energy storage power supply.

[0038] When the energy storage power supply 100 is a third energy storage power supply charged by the first energy storage power supply, the battery management system 12 is configured to control the power management module 16 to charge the battery module 14 with the power output by the first energy storage power supply, which is adapted to the parameters of the third energy storage power supply. Alternatively, in an embodiment, when the SOC of the third energy storage power supply is the same as the SOC of the first energy storage power supply, the first energy storage power supply stops outputting power, thereby stopping charging the third energy storage power supply. Alternatively, in an embodiment, when the SOC of the third energy storage power supply reaches a third set SOC (e.g., 100%), the first energy storage power supply can stop outputting power, thereby stopping charging the third energy storage power supply. Alternatively, in an embodiment, when the SOC of the first energy storage power supply reaches a fourth set SOC, the first energy storage power supply stops outputting power, thereby stopping charging the third energy storage power supply. The energy storage power supply 100 can communicate with the battery management system 12 of the first energy storage power supply through the first interface 18, thereby obtaining the parameter information of the other party.

[0039] The output power is adapted to the parameters of the power supply, which can avoid the safety problems in the energy sharing process to a certain extent, thereby ensuring the safety of the energy sharing process.

[0040] In some embodiments, the first interface 18 includes a photovoltaic interface 20, and the power management module 16 includes an inverter 22, and the battery management system 12 is connected to the first interface 18 through the inverter 22.

[0041] In this way, the photovoltaic interface 20 can be used to realize energy sharing.

[0042] Specifically, the photovoltaic interface 20 can be connected to a photovoltaic power generation system, and the power generated by the photovoltaic power generation system can be input into the energy storage power supply 100 to charge the battery module 14. The inverter 22 can use the power generated by the photovoltaic power generation system to charge the battery module 14.

[0043] In the present embodiment, when energy sharing is performed, the energy storage power supply 100 and the photovoltaic interface 20 of the first energy storage power supply can be connected through a photovoltaic power supply line. When the energy storage power supply 100 is a second energy storage power supply, the inverter 22 of the second energy storage power supply outputs power to the first energy storage power supply through the photovoltaic interface 20 and the photovoltaic power supply line, thereby charging the first energy storage power supply. When the energy storage power supply 100 is a third energy storage power supply, the inverter 22 of the third energy storage power supply receives the power output by the first energy storage power supply through the photovoltaic interface 20 and the photovoltaic power supply line, thereby charging the battery module 14.

[0044] In some embodiments, the inverter 22 comprises a maximum power point tracking module 24, the maximum power point tracking module 24 comprises a first DC-DC converter 26, the battery management system 12 is connected with the first interface 18 through the first DC-DC converter 26, and the maximum power point tracking module 24 is used to control the output power of the battery module 14 to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

[0045] In this way, the safety of energy sharing and the charging efficiency of the photovoltaic power generation system on the energy storage battery can be improved.

[0046] Specifically, the maximum power point tracking (MPPT) module 24 can be used to improve the efficiency of the photovoltaic power generation system. In the photovoltaic power generation system, the power generated by the photovoltaic power generation system is affected by many factors such as light intensity and temperature, so its output power will change with these conditions. The maximum power point tracking module 24 can automatically adjust the operating point of the photovoltaic panel under these changing conditions, so that it always works at the maximum power point, thereby maximizing the power generation efficiency of the entire photovoltaic power generation system, thereby improving the charging efficiency of the photovoltaic power generation system on the energy storage battery.

[0047] When the photovoltaic power generation system charges the first energy storage power supply 100, the maximum power point tracking module 24 can convert the input voltage of the photovoltaic power generation system into a voltage suitable for charging the battery module 14 through the first DC-DC converter 26, for example, step-up or step-down.

[0048] When the first energy storage power supply is connected to the photovoltaic interface 20, the battery management system 12 can communicate with the first energy storage power supply through the photovoltaic interface 20 to obtain the parameters of the first energy storage power supply (including but not limited to the maximum allowable charging current and charging power, SOC, etc.). Then, the battery management system 12 communicates with the maximum power point tracking module 24, and controls the maximum power point tracking module 24 to adjust the output power and charging current of the photovoltaic interface 20 according to the parameters of the first energy storage power supply.

[0049] When the first energy storage power supply is connected to the photovoltaic interface 20, the maximum power point tracking module 24 can convert the output voltage of the second energy storage power supply into a voltage suitable for charging the first energy storage power supply through the first DC-DC converter 26, so that the output power of the battery module 14 is adapted to the maximum allowable charging current and charging power of the first energy storage power supply, and the first energy storage power supply is charged, thereby realizing energy sharing.

[0050] In some embodiments, the inverter 22 comprises a DC-AC converter 28, and the energy storage power supply 100 further comprises an AC input interface 30 and an AC output interface 32, and the DC-AC converter 28 is connected with the AC input interface 30 and the AC output interface 32.

[0051] Thus, the energy storage power supply 100 can be charged by an AC power supply, and a load using AC power can be powered.

[0052] Specifically, the AC input interface 30 can be connected with an AC power supply (such as a mains power supply), so that the AC power supply can input AC power through the AC input interface 30, and the DC-AC converter 28 can convert the AC power input by the AC power supply into DC power suitable for charging the battery module 14, so that the battery module 14 can be charged.

[0053] The AC output interface 32 can be connected with a load using AC power (such as an induction cooker, a projector, etc.), so that the energy storage power supply 100 can output AC power through the AC output interface 32 to power the load. The DC-AC converter 28 can convert the DC power output by the battery module 14 into AC power suitable for powering the load, so that the load can be powered.

[0054] Optionally, in an embodiment, the energy storage power supply 100 further comprises a fuse 34 connected between the AC input interface 30 and the DC-AC converter 28. The fuse 34 can also be referred to as a fuse, and its main function is to serve as an overload protector. Specifically, the fuse 34 functions as a "safety valve" in the circuit. When the current in the circuit exceeds a specified value, the fuse 34 will melt due to its own heat, thereby breaking the circuit. In this way, the safety hazards such as circuit damage or fire caused by excessive current can be effectively prevented.

[0055] In some embodiments, the first interface 18 comprises a DC interface 36, and the power management module 16 comprises a DC management module 37, and the battery management system 12 is connected with the DC interface 36 through the DC management module 37, and the DC management module 37 is configured to control the output power of the battery module 14 to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

[0056] Thus, the application range of the energy storage power supply 100 can be increased.

[0057] Specifically, the DC management module 37 can adjust the output power of the DC interface 36 according to the control signal of the battery management system 12, so that the power output by the DC interface 36 is adapted to the load connected to the DC interface 36. Specifically, when a load using DC power is connected to the DC interface 36, the battery management system 12 can communicate with the load through the DC interface 36 to obtain parameters of the load (including but not limited to maximum allowable charging current and charging power, SOC, etc.). Then, the battery management system 12 communicates with the DC module to control the DC management module 37 to adjust the output power of the DC interface 36 according to the parameters of the load. The load using DC power includes but is not limited to a mobile phone, a tablet computer, a wearable smart device (such as a smart watch, a smart bracelet, smart glasses, a smart helmet, etc.), a first energy storage power supply, etc.

[0058] Optionally, the DC management module 37 includes a second DC-DC converter 39, and the DC management module 37 can convert the output voltage of the battery module 14 to a voltage suitable for powering the load through the second DC-DC converter 39, for example, step-up or step-down.

[0059] When the energy storage power supply 100 is a second energy storage power supply charging the first energy storage power supply and the first energy storage power supply is connected to the DC interface 36, the DC management module 37 can adjust the output power of the DC interface 36 according to the control signal of the battery management system 12, so that the output power of the battery module 14 is adapted to the maximum allowable charging current and charging power of the first energy storage power supply, and the first energy storage power supply is charged, thereby realizing energy sharing.

[0060] In some embodiments, the DC interface 36 includes at least one of a Type-C interface, a USB interface, and a mini-USB interface.

[0061] Therefore, the application range of the energy storage power supply 100 is wider.

[0062] Specifically, in the embodiments shown in Figure 1 , the energy storage power supply 100 includes one DC interface 36, and the DC interface 36 is a Type-C interface. In other embodiments, the energy storage power supply 100 can include multiple DC interfaces 36, and the types of the multiple DC interfaces 36 can be the same or different, or the types of part of the DC interfaces 36 are the same and the types of part of the DC interfaces 36 are different. For example, the multiple DC interfaces 36 include any two or three of a Type-C interface, a USB interface, and a mini-USB interface.

[0063] In some embodiments, the first interface 18 includes a UART interface and / or a USB interface.

[0064] Therefore, the communication between the 100 energy storage power supplies is reliable, and the structure of the first interface is simple and low in cost.

[0065] Specifically, in one embodiment, the first interface 18 includes a UART interface, which is an interface suitable for communication via the UART communication protocol. The two energy storage power supplies 100 can communicate with each other via the UART communication protocol to achieve data exchange. UART (Universal Asynchronous Receiver / Transmitter) is an asynchronous serial communication protocol that supports full-duplex data transmission, requiring no shared clock signal, only that both communicating parties maintain a consistent baud rate. A UART interface suitable for communication via the UART communication protocol may include TXD (transmit pin), RXD (receive pin), and GND (common ground). Optionally, the UART interface also includes TS / CTS (flow control pin) to coordinate data transmission and prevent overflow.

[0066] The sender and receiver do not need a common clock signal to synchronize data; they each use their own clock. Communication is possible as long as both sides have the same baud rate (data transfer rate) setting. UART uses serial communication, meaning data is sent and received bit by bit, rather than in parallel (multiple bits transmitted simultaneously). This reduces the need for wiring and simplifies hardware design.

[0067] In one embodiment, the first interface 18 includes a USB interface, which is an interface suitable for communication via the USB (such as USB 2.0) communication protocol. The two energy storage power supplies 100 can communicate with each other via the USB communication protocol to achieve data exchange. The USB 2.0 communication protocol can employ differential signal transmission. A USB interface suitable for communication via the USB communication protocol may include four wires (two data lines D+ and D-, one power line, and one ground line) for data transmission and power supply. Differential signal transmission helps improve anti-interference capability and data transmission stability. The USB interface also simplifies the interface and reduces cost.

[0068] Optionally, in Figure 1 In the illustrated embodiment, the energy storage power supply 100 includes a photovoltaic interface 20 and a DC interface 36. The photovoltaic interface 20 may be an interface suitable for communication via the UART communication protocol, i.e., the photovoltaic interface 20 can function as a UART interface. The DC interface 36 may be an interface suitable for communication via both the UART and USB communication protocols, i.e., the DC interface 36 can function as both a UART interface and a USB interface. It is understood that in other embodiments, the first interface 18 may include either a UART interface or a USB interface.

[0069] When the energy storage power supply 100 is connected to the first energy storage power supply through the photovoltaic power supply line and the photovoltaic interface 20, the battery management system 12 of the energy storage power supply 100 and the battery management system 12 of the first energy storage power supply can communicate through the UART communication protocol to perform handshake, and after the handshake is successful, the respective battery management systems 12 can obtain the parameter information of the other party, such as the remaining SOC, the total voltage of the battery, the capacity of the battery, the energy of the battery, the alarm of the battery, the maximum allowable charging and discharging power of the battery, the maximum allowable charging and discharging current of the battery, and the like. When the energy storage power supply 100 serves as a second energy storage power supply, the battery management system 12 of the energy storage power supply 100 controls the maximum power point tracking module 24 to perform power control according to the maximum allowable charging current and the charging voltage of the first energy storage power supply through communication, so that the output electric energy of the battery module 14 is adapted to the parameters of the first energy storage power supply.

[0070] When the energy storage power supply 100 is connected to the first energy storage power supply through the Type-C power supply line and the direct current interface 36, the battery management system 12 of the energy storage power supply 100 and the battery management system 12 of the first energy storage power supply can communicate through the UART or USB2.0 communication protocol to perform handshake, and after the handshake is successful, the respective battery management systems 12 can obtain the parameter information of the other party, such as the remaining SOC, the total voltage of the battery, the capacity of the battery, the energy of the battery, the alarm of the battery, the maximum allowable charging and discharging power of the battery, the maximum allowable charging and discharging current of the battery, and the like. When the energy storage power supply 100 serves as a second energy storage power supply, the battery management system 12 of the energy storage power supply 100 controls the direct current management module 37 to perform power control according to the maximum allowable charging current and the charging voltage of the first energy storage power supply through communication, so that the output electric energy of the battery module 14 is adapted to the parameters of the first energy storage power supply.

[0071] The energy storage power supply 100 and the first energy storage power supply can obtain the parameter information of the other party, and when the energy storage power supply 100 serves as a second energy storage power supply, the battery management system 12 of the energy storage power supply 100 can control the electric energy management module 16 to output the electric energy of the battery module 14 to adapt to the parameters of the first energy storage power supply, and when the energy storage power supply 100 serves as a third energy storage power supply, the first energy storage power supply can output electric energy adapted to the parameters of the third energy storage power supply, so as to realize energy sharing.

[0072] In some embodiments, the energy storage power supply 100 comprises an input component for inputting a setting signal, and in response to the setting signal, the battery management system 12 is configured to determine whether the energy storage power supply 100 serves as a second energy storage power supply or a third energy storage power supply.

[0073] Therefore, the energy storage power supply 100 can output electric energy or input electric energy.

[0074] Specifically, the input component includes, but is not limited to, a button, a knob, a touch screen, etc. disposed on the housing of the energy storage power supply 100. A user can generate a setting signal by operating the input component, and the setting of the setting signal can be stored in the energy storage power supply 100. In response to the setting signal, the battery management system 12 can determine whether the energy storage power supply 100 is a second energy storage power supply or a third energy storage power supply.

[0075] When the energy storage power supply 100 is the second energy storage power supply, the second energy storage power supply can charge the first energy storage power supply when the second energy storage power supply is connected to the first energy storage power supply through the first interface 18 and the power supply line. When the energy storage power supply 100 is the third energy storage power supply, the first energy storage power supply can charge the third energy storage power supply when the third energy storage power supply is connected to the first energy storage power supply through the first interface 18 and the power supply line.

[0076] In some embodiments, the input component includes a wireless connection module 38 and / or a button, the wireless connection module 38 is used to communicate with a terminal device and receive a setting signal sent by the terminal device.

[0077] In this way, the user can conveniently make relevant settings for the energy storage power supply 100.

[0078] Specifically, in one embodiment, the input component includes a wireless connection module 38 and a button, the button can be disposed on the housing of the energy storage power supply 100, and the wireless connection module 38 can be disposed in the housing of the energy storage power supply 100. The wireless connection module 38 can be in communication with a terminal device, and the wireless connection module 38 includes, but is not limited to, WIFI, Bluetooth, etc. The terminal device includes, but is not limited to, a mobile phone, a tablet computer, a personal computer, a server, a wearable smart device (such as a smart watch, a smart bracelet, smart glasses, a smart helmet), etc.

[0079] The user can set whether the energy storage power supply 100 is a second energy storage power supply or a third energy storage power supply by operating the button. The terminal device can be installed with an application program (APP) for interacting with the energy storage power supply 100, and the user can also set whether the energy storage power supply 100 is a second energy storage power supply or a third energy storage power supply on the user interaction interface of the APP, and view the current state of the energy storage power supply 100, etc.

[0080] In one embodiment, the input component includes a wireless connection module 38 or a button.

[0081] In some embodiments, in a case where a setting signal is not received after a preset time length when the energy storage power supply 100 is in communication with the first energy storage power supply through the first interface 18, the battery management system 12 is configured to determine whether the energy storage power supply 100 is a second energy storage power supply or a third energy storage power supply according to a default setting.

[0082] In this way, energy sharing can be achieved using a default setting.

[0083] Optionally, in Figure 1 In the illustrated embodiment, the energy storage power supply 100 includes a photovoltaic interface 20 and a direct current interface 36. When the energy storage power supply 100 is connected to the first energy storage power supply through the photovoltaic charging line and the photovoltaic interface 20 or when the energy storage power supply 100 is connected to the first energy storage power supply through the Type-C charging line and the direct current interface 36, the battery management system 12 of the energy storage power supply 100 and the battery management system 12 of the first energy storage power supply communicate with each other through the UART or USB2.0 communication protocol. After a successful handshake, the respective battery management systems 12 obtain the parameter information of the other party, such as the remaining SOC, the total voltage of the battery, the capacity of the battery, the energy of the battery, the battery alarm, the maximum allowable charging and discharging power of the battery, the maximum allowable charging and discharging current of the battery, and the like.

[0084] When the user sets the energy storage power supply 100 as the second energy storage power supply, the battery management system 12 of the second energy storage power supply can control the energy management module 16 to output the energy of the battery module 14, and the output energy of the battery module 14 is adapted to the parameters of the first energy storage power supply, for example, the output energy of the second energy storage power supply is not greater than the maximum allowable charging current and charging power of the first energy storage power supply. It can be understood that when the user sets the first energy storage power supply as the charging power supply, it can be considered that the user sets the energy storage power supply 100 as the second energy storage power supply.

[0085] When the user sets the energy storage power supply 100 as the third energy storage power supply, that is, the user sets the energy storage power supply 100 as the charging power supply, the first energy storage power supply can output energy, and the output energy of the first energy storage power supply is adapted to the parameters of the third energy storage power supply, for example, the output current of the first energy storage power supply is not greater than the maximum allowable charging current and charging power of the third energy storage power supply.

[0086] After the energy storage power supply 100 and the first energy storage power supply establish a communication connection through the first interface 18 for a preset time length, if no setting signal is received, it can be considered that the user selects timeout, and the battery management system 12 is configured to determine whether the energy storage power supply 100 is the second energy storage power supply or the third energy storage power supply according to a default setting. Optionally, in an embodiment, the default setting can be that the energy storage power supply 100 with a high SOC charges the energy storage power supply 100 with a low SOC. Optionally, in an embodiment, the default setting can be that the energy storage power supply 100 with a low SOC charges the energy storage power supply 100 with a high SOC.

[0087] Optionally, the user can change the default setting and store it in the energy storage power supply 100. In one example, the preset time length is 5 seconds.

[0088] In one example, the direct current management module 37 supports a maximum charging power of 100W to 240W, and the maximum charging current is maintained at 5A.

[0089] Optionally, the battery management system 12 comprises a display module 40, the energy storage power supply 100 comprises a display screen, the display module 40 is connected with the display screen, and the display module 40 is configured to control the display screen to display the current state of the energy storage power supply 100. Optionally, the energy storage power supply 100 comprises a power-on button 42 and an AC switch button 44, the power-on button 42 is configured to control the start and stop of the energy storage power supply 100, and the AC switch button 44 is configured to control the start and stop of the AC output.

[0090] Optionally, when the energy storage power supply 100 to be charged is fully charged or the power supply line is disconnected, the battery management system 12 can exit the energy sharing process,

[0091] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, combinations, modifications, replacements and variations of the embodiments can be made without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage power supply, characterized by, The battery management system, the battery module, the electric energy management module and the first interface, the battery management system is connected with the battery module, the electric energy management module and the first interface, the first interface is connected with the electric energy management module, and the first interface is used for being connected with the first energy storage power supply; When the energy storage power supply is the second energy storage power supply for charging the first energy storage power supply, the battery management system is used for controlling the electric energy management module to output the electric energy of the battery module, and the output electric energy of the battery module is adapted to the parameters of the first energy storage power supply; When the energy storage power supply is the third energy storage power supply charged by the first energy storage power supply, the battery management system is used for controlling the electric energy management module to charge the battery module by using the electric energy output by the first energy storage power supply, and the electric energy output by the first energy storage power supply is adapted to the parameters of the third energy storage power supply.

2. The energy storage power supply of claim 1, wherein, The first interface includes a photovoltaic interface, and the electric energy management module includes an inverter, and the battery management system is connected with the first interface through the inverter.

3. The energy storage power supply of claim 2, wherein, The inverter includes a maximum power point tracking module, the maximum power point tracking module includes a first DC-DC converter, the battery management system is connected with the first interface through the DC-DC converter, and the maximum power point tracking module is used for controlling the output electric energy of the battery module to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

4. The energy storage power supply of claim 2, wherein, The inverter includes a DC-AC converter, the energy storage power supply further includes an AC input interface and an AC output interface, and the DC-AC converter is connected with the AC input interface and the AC output interface.

5. The energy storage power supply of claim 1, wherein, The first interface includes a DC interface, the electric energy management module includes a DC management module, the battery management system is connected with the DC interface through the DC management module, and the DC management module is used for controlling the output electric energy of the battery module to be adapted to the maximum allowable charging current and charging power of the first energy storage power supply.

6. The energy storage power supply of claim 5, wherein, The DC interface includes at least one of a Type-C interface, a USB interface and a mini-USB interface.

7. The energy storage power supply of any of claims 1-6, wherein, The first interface includes a UART interface and / or a USB interface.

8. The energy storage power supply of claim 1, wherein, The energy storage power supply includes an input component, the input component is used for inputting a setting signal, and in response to the setting signal, the battery management system is used for determining whether the energy storage power supply is the second energy storage power supply or the third energy storage power supply.

9. The energy storage power supply of claim 8, wherein, The input component includes a wireless connection module and / or a key, the wireless connection module is used for being communicatively connected with a terminal device and receiving the setting signal sent by the terminal device.

10. The energy storage power supply of claim 8, wherein, In a case where the setting signal is not received after a preset time length that the energy storage power supply and the first energy storage power supply establish a communication connection through the first interface, the battery management system is used for determining whether the energy storage power supply is the second energy storage power supply or the third energy storage power supply according to a default setting.

Images