Portable energy storage system and energy storage power supply

Abstract

The embodiment of the utility model relates to the technical field of energy storage, in particular to a portable energy storage system and an energy storage power supply. The portable energy storage system comprises a battery pack and a battery management module. The battery management module is connected with the battery pack; wherein the battery management module is integrated with a functional unit, and the functional unit is used for executing a preset function of the portable energy storage system; the battery management module further comprises a front-end control unit, a high-side driving unit and a data processing unit; the front-end control unit is respectively connected with the battery pack, the high-side driving unit and the data processing unit, and the data processing unit is also respectively connected with the high-side driving unit and the functional unit. In the embodiment of the invention, the functional modules dispersed in the portable energy storage protection plate are integrated in the battery management system, so that the integration level of a portable energy storage product is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage technology, and in particular to a portable energy storage system and an energy storage power supply. Background Art

[0002] With the popularity of outdoor lifestyles and people's pursuit of natural experiences, outdoor activities have become more and more popular in modern society. However, these remote natural environments usually lack convenient power supplies, which brings certain troubles to outdoor enthusiasts when using electronic devices during activities. In order to meet the demand for electricity in outdoor environments, portable energy storage power supply products have emerged, which provide users with a continuous and reliable power supply. Portable energy storage power supply products include portable energy storage protection boards. The portable energy storage protection board is equipped with a battery management system (Battery Management System, BMS). The battery management system can monitor various parameters of the battery pack in real time, including: voltage, current, temperature, etc., to ensure that the battery operates within a safe and stable operating range, and is responsible for controlling the charging and discharging process to ensure that the battery pack can be charged and discharged evenly.

[0003] In the process of implementing the embodiments of the present application, the inventors found that in the current portable energy storage protection board, the battery management system has fewer functions, and various functional modules are dispersed in the portable energy storage protection board, resulting in low overall integration. Utility Model Content

[0004] In view of the above problems, the embodiments of the present application provide a portable energy storage system and an energy storage power supply, which solve the problem of low circuit integration caused by the dispersion of functional modules in existing portable energy storage products.

[0005] In a first aspect, an embodiment of the present application provides a portable energy storage system, the portable energy storage system comprising a battery pack and a battery management module; the battery management module is connected to the battery pack; wherein the battery management module is integrated with a functional unit, and the functional unit is used to execute the preset function of the portable energy storage system; the battery management module also includes a front-end control unit, a high-side driver unit and a data processing unit; the front-end control unit is respectively connected to the battery pack, the high-side driver unit and the data processing unit, and the data processing unit is also respectively connected to the high-side driver unit and the functional unit; the front-end control unit is used to obtain battery data of the battery pack, and output a control signal to the high-side driver unit based on the battery data; the high-side driver unit is used to receive the control signal, and control the charge and discharge state of the battery pack according to the control signal; the front-end control unit is also used to output the battery data to the data processing unit; the data processing unit is used to receive the battery data, and process the battery data so that the functional unit executes the preset function according to the processed battery data, wherein the processed battery data includes communication data and battery status data.

[0006] In an optional manner, the data processing unit is provided with a communication control terminal, a display control terminal and an LED control terminal, and the functional unit includes a communication subunit, a display subunit and an LED subunit; the communication subunit is respectively connected to the communication control terminal and an external device, the display subunit is connected to the display control terminal, and the LED subunit is connected to the LED control terminal; the communication subunit is used to receive the communication data, and send the communication data to the external device via a 485 bus, a CAN bus, and Bluetooth; the display subunit is used to receive the battery status data, and visually display the battery status data; the LED subunit is used to receive the battery status data, and control the display status of the LED indicator light based on the battery status data.

[0007] In an optional manner, the battery management module also includes a power supply unit; the power supply unit is respectively connected to the battery pack, the high-side driver unit and the data processing unit, and is used to supply power to the battery pack, the high-side driver unit and the data processing unit.

[0008] In an optional manner, the high-side drive unit includes a protection subunit, a charging and discharging electronic unit and a parallel control subunit; the protection subunit is connected to the battery pack, the front-end control unit, the data processing unit and the charging and discharging electronic unit, the charging and discharging electronic unit is also connected to the front-end control unit, the parallel control subunit and an external charger / load, the parallel control subunit is connected to the front-end control unit, the power supply unit, an external parallel machine and an external charger / load; the charging and discharging electronic unit is used to receive the control signal sent by the front-end control unit, and control the charging and discharging state of the battery pack according to the control signal.

[0009] In an optional manner, the front-end control unit is provided with a first control fuse end, the data processing unit is provided with a second control fuse end, and the protection subunit includes a fuse F1 and a switch tube Q1; the first end of the fuse F1 is connected to the positive electrode of the battery pack, the second end of the fuse F1 is connected to the charging and discharging electronic unit, the third end of the fuse F1 is connected to the second end of the switch tube Q1, the first end of the switch tube Q1 is respectively connected to the first control fuse end and the second control fuse end, and the third end of the switch tube Q1 is grounded.

[0010] In an optional manner, the front-end control unit is further provided with a charging control terminal, a discharging control terminal, a pre-discharging control terminal and a charging detection terminal, and the charging and discharging electronic unit includes a switch tube Q2, a switch tube Q3, a switch tube Q4 and a resistor R1; the third end of the switch tube Q2 is connected to the second end of the fuse F1, the second end of the switch tube Q2 is connected to the second end of the switch tube Q3, the first end of the switch tube Q2 is connected to the charging control terminal, the first end of the switch tube Q3 is connected to the discharging control terminal, the third end of the switch tube Q3 is connected to the charging detection terminal, the parallel control subunit and the positive electrode of the external charger / load, the first end of the switch tube Q4 is connected to the pre-discharging control terminal, the second end of the switch tube Q4 is connected to the common end of the switch tube Q2 and the switch tube Q3, the third end of the switch tube Q4 is connected to the first end of the resistor R1, and the second end of the resistor R1 is respectively connected to the third end of the switch tube Q3, the charging detection terminal, the parallel control subunit and the positive electrode of the external charger / load.

[0011] In an optional manner, the power supply unit is provided with a parallel control end and a parallel end, and the parallel control subunit includes a switch tube Q5; the first end of the switch tube Q5 is connected to the parallel control end, the second end of the switch tube Q5 is respectively connected to the positive end of the external charger / load, the charging detection end, the second end of the resistor R1, and the third end of the switch tube Q3, and the third end of the switch tube Q5 is connected to the parallel end and the external parallel connection.

[0012] In an optional manner, the portable energy storage system includes at least two battery packs and at least two battery management modules; the battery packs are connected to the battery management modules one by one to form at least two battery management modules, one of the at least two battery management modules is selected as a host, and the remaining battery management modules are selected as slaves, the battery management modules of the slaves are connected in sequence and then connected to the battery management module of the host, and the negative electrode of the external charger / load of the host is connected to the negative terminal of the external charger / load of the slave.

[0013] In a second aspect, an embodiment of the present application provides an energy storage power supply, wherein the energy storage power supply includes any of the portable energy storage systems described above.

[0014] Different from the prior art, an embodiment of the present application provides a portable energy storage system, which includes a battery pack and a battery management module. The battery management module is connected to the battery pack, wherein the battery management module is integrated with a functional unit, and the functional unit can execute the preset function of the portable energy storage system. By integrating the functional units scattered in the portable energy storage protection board into the battery management system, the integration of the portable energy storage product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 is a structural schematic diagram of a portable energy storage system provided in an embodiment of the present application;

[0017] Figure 2 is a circuit structure diagram of a high-side driver unit provided in an embodiment of the present application;

[0018] Figure 3 It is a structural schematic diagram of a portable energy storage system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and in detail in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] The technical features involved in the various embodiments of the present application described below do not conflict with each other and can be combined with each other.

[0021] When an element is referred to as being “connected to” another element, it can be directly connected to the other element, or one or more intervening elements may be present therebetween.

[0022] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0023] See also Figure 1 , Figure 1 It is a structural schematic diagram of a portable energy storage system provided in an embodiment of the present application.

[0024] The portable energy storage system 100 includes a battery pack 1 and a battery management module 2, and the battery management module 2 is connected to the battery pack 1. The battery management module 2 is integrated with a functional unit 25, and the functional unit 25 performs the preset functions of the portable energy storage system 100. The portable energy storage system 100 represents a portable system that can store electrical energy and is usually used for outdoor activities. The battery pack 1 represents a device composed of multiple battery cells, and the battery cells can be lithium batteries, nickel-hydrogen batteries, etc., which can store electrical energy. The battery management module 2 is connected to the battery pack 1 and can monitor and manage the performance and status of the batteries in the battery pack. The functional unit 25 is a component integrated in the battery management module 2 that has the ability to perform specific tasks. The preset function represents a specific function pre-defined and set in the functional unit 25, including but not limited to special working modes, automated tasks, user interface functions, etc.

[0025] An embodiment of the present application provides a portable energy storage system, which includes a battery pack and a battery management module. The battery management module is connected to the battery pack, wherein the battery management module is integrated with a functional unit, and the functional unit can execute a preset function of the portable energy storage system. By integrating the functional units dispersed in the portable energy storage protection board into the battery management system, the integration of the portable energy storage product is improved.

[0026] In an embodiment of the present application, the battery management module 2 also includes a front-end control unit 21, a high-side driver unit 22 and a data processing unit 23. The front-end control unit 21 is respectively connected to the battery pack 1, the high-side driver unit 22 and the data processing unit 23. The data processing unit 23 is also respectively connected to the high-side driver unit 22 and the functional unit 25.

[0027] Specifically, the front-end control unit 21 obtains the battery data of the battery pack 1, and outputs a control signal to the high-side driver unit 22 based on the battery data. The high-side driver unit 22 receives the control signal and controls the charge and discharge state of the battery pack 1 according to the control signal. The front-end control unit 21 also outputs the battery data to the data processing unit 23. The data processing unit 23 receives the battery data and processes the battery data so that the function unit 25 performs a preset function according to the processed battery data, wherein the processed battery data includes communication data and battery status data.

[0028] Among them, each battery cell in the battery pack 1 is individually connected to the front-end control unit 21, the battery data is information obtained from the battery pack, providing parameters related to the battery status and performance of the battery pack 1, including but not limited to temperature, voltage, current, etc., the control signal is a signal for adjusting the operating status of the battery management module 2, for example: the control signal includes information such as start and stop of charging and discharging, the charging and discharging status indicates whether the battery pack 1 is currently in a charging state or a discharging state, the processed battery data represents the data obtained after filtering, smoothing and other operations are performed on the collected original battery data, the communication data is data for communicating and interacting with other systems or devices, including but not limited to status reports, alarm information, etc., the battery status data includes information on the overall status of the battery, such as: battery health, remaining life estimation, etc.

[0029] The battery management module also includes a power supply unit 24 , which is respectively connected to the battery pack 1 , the high-side driver unit 22 and the data processing unit 23 to supply power to the battery pack 1 , the high-side driver unit 22 and the data processing unit 23 .

[0030] Specifically, the BMS EN pin of the power supply unit 24 is connected to the external control board, the KEY pin of the power supply unit 24 is connected to the external key switch, and the user can start the portable energy storage system 100 by pressing the external key switch. The VDD6V5 pin of the power supply unit 24 continuously provides a 6V5 voltage to provide power to the power management module 2, the VDD3V3 pin of the power supply unit 24 is connected to the VDD3V3 pin of the data processing unit 23, and the VDD5V5 pin of the power supply unit 24 is connected to the VDD5V5 pin of the data processing unit 23.

[0031] The B+ pin of the front-end control unit 21 is connected to the positive electrode B+ of the battery pack 1, the CHG pin of the front-end control unit 21 is connected to the CHG pin of the high-side drive unit 22, the DSG pin of the front-end control unit 21 is connected to the DSG pin of the high-side drive unit 22, the PDSG pin of the front-end control unit 21 is connected to the PDSG pin of the high-side drive unit 22, the LD pin of the front-end control unit 21 is connected to the LD pin of the high-side drive unit 22, the PACK pin of the front-end control unit 21 is connected to the PACK pin of the high-side drive unit 22, the FUSE pin of the front-end control unit 21 is respectively connected to the FUSE pin of the high-side drive unit 22 and the FUSE pin of the data processing unit 23, the front-end control unit 21 is connected to the data processing unit 23 through 12C SCL and 12C SDA, the ADC pin of the front-end control unit 21 is connected to the temperature probe, the P- pin of the front-end control unit 21 is connected to the negative electrode B- of the battery pack, the negative electrode B- of the battery pack is connected to the B- pin of the front-end control unit 21, and the negative electrode B- of the battery pack is also grounded.

[0032] The ADC pin of the front-end control unit 21 is connected to the temperature probe to measure the temperature of the battery pack 1; the front-end control unit 21 communicates with the data processing unit 23 in real time through I2C, and transmits the collected battery data to the data processing unit 23 in real time; the SRP pin of the front-end control unit 21 and the SRN pin of the front-end control unit 21 are respectively connected to the two ends of the current-sensing resistor, and the current-sensing resistor is used to monitor the current flowing through the battery pack 1; the PDSG pin of the front-end control unit 21 is connected to the PDSG pin of the high-side drive unit 22, and the PDSG pin can be controlled to output a high level when the battery pack 1 is discharged to protect the subsequent circuit.

[0033] The B+ pin of the high-side drive unit 22 is connected to the positive electrode B+ of the battery pack 1, the P+ pin of the high-side drive unit 22 is connected to the positive electrode of the external charger / load, the P- pin of the high-side drive unit 22 is connected to the negative electrode of the external charger / load, the EX B+ pin of the high-side drive unit 22 is respectively connected to the EX B+ pin of the power supply unit 24 and the external parallel connection, and the EX B+VCC pin of the high-side drive unit 22 is connected to the EX B+VCC pin of the power supply unit 24.

[0034] The data processing unit 23 is provided with a communication control terminal, a display control terminal and an LED control terminal, and the functional unit 25 includes a communication subunit 251, a display subunit 252 and an LED subunit 253. The communication subunit 251 is connected to the communication control terminal and an external device respectively, the display subunit 252 is connected to the display control terminal, and the LED subunit 253 is connected to the LED control terminal.

[0035] The communication subunit 251 includes 485 communication, CAN communication and Bluetooth communication. The communication subunit receives communication data and sends the communication data to external devices through the 485 bus, CAN bus and Bluetooth. The display subunit 252 receives battery status data and displays the battery status data visually. The LED subunit 253 receives battery status data and controls the display status of the LED indicator based on the battery status data. Among them, the external device includes a parallel power-up package, and the communication data output by the data processing unit 23 is sent to the parallel power-up package through 485 communication. The communication data output by the data processing unit 23 is sent to other external devices through CAN communication and Bluetooth communication, for example, the communication data is sent to the inverter through CAN communication. The battery status data output by the data processing unit 23 can enable the LED subunit 253 to control the LED light to display the battery capacity, different colors or brightness to display the health status of the battery, etc.

[0036] Specifically, the LED pin of the data processing unit 23 is connected to the LED, the ADC pin of the data processing unit 23 is connected to other temperature probes, the Disp display screen pin of the data processing unit 23 is connected to an external display screen, the 485 communication pin of the data processing unit 23 is connected to the 485 communication of the communication subunit 251, the CAN communication pin of the data processing unit 23 is connected to the CAN communication of the communication subunit 251, and the Bluetooth communication pin of the data processing unit 23 is connected to the Bluetooth communication of the communication subunit 251. Among them, the communication control end is the 485 communication pin, CAN communication pin, and Bluetooth communication pin of the data processing unit 23, the display control end is the Disp display screen pin of the data processing unit 23, and the LED control end is the LED pin of the data processing unit.

[0037] The portable energy storage system in this embodiment integrates collection, control, display, and communication, and has a high degree of integration, which improves the problem of complex circuits and high costs caused by not integrating the functional units in the portable energy storage protection board into the power management module.

[0038] In this embodiment, the functional units in the provided portable energy storage system include a communication subunit, a display subunit and an LED subunit. The communication subunit is connected to the communication control terminal and the external device respectively, the display subunit is connected to the display control terminal, and the LED subunit is connected to the LED control terminal. The communication subunit includes 485 communication, CAN communication and Bluetooth communication. The communication subunit receives communication data and sends the communication data to the external device through the 485 bus, CAN bus and Bluetooth; the display subunit receives battery status data and displays the battery status data visually; the LED subunit receives battery status data and controls the display status of the LED indicator light based on the battery status data. By integrating the 485 communication, CAN communication and Bluetooth communication scattered in the portable energy storage protection board into the battery management system, the integration of the portable energy storage product is improved.

[0039] See also Figure 2 , Figure 2 2 is a circuit diagram of a high-side driver unit provided in an embodiment of the present application. The high-side driver unit 22 includes a protection subunit 221 , a charge and discharge electronic unit 222 and a parallel control subunit 223 .

[0040] The protection subunit 221 is connected to the battery pack 1, the front-end control unit 21, the data processing unit 23 and the charging and discharging electronic unit 222. The charging and discharging electronic unit 222 is also connected to the front-end control unit 21, the parallel control subunit 223 and the external charger / load. The parallel control subunit 223 is connected to the front-end control unit 21, the power supply unit 24, the external parallel machine and the external charger / load.

[0041] The charging and discharging electronic unit 222 receives the control signal sent by the front-end control unit 21 and controls the charging and discharging state of the battery pack 1 according to the control signal.

[0042] The front-end control unit 21 is provided with a first control fuse end, the data processing unit 23 is provided with a second control fuse end, and the protection subunit 221 includes a fuse F1 and a switch tube Q1.

[0043] Among them, the first end of the fuse F1 is connected to the positive electrode of the battery pack, the second end of the fuse F1 is connected to the charging and discharging electronic unit, the third end of the fuse F1 is connected to the second end of the switch tube Q1, the first end of the switch tube Q1 is respectively connected to the first control fuse end and the second control fuse end, and the third end of the switch tube Q1 is grounded.

[0044] The front-end control unit 21 is further provided with a charging control terminal, a discharging control terminal, a pre-discharging control terminal and a charging detection terminal. The charging and discharging electronic unit 222 includes a switch tube Q2, a switch tube Q3, a switch tube Q4 and a resistor R1.

[0045] Among them, the third end of the switch tube Q2 is connected to the second end of the fuse F1, the second end of the switch tube Q2 is connected to the second end of the switch tube Q3, the first end of the switch tube Q2 is connected to the charging control end, the first end of the switch tube Q3 is connected to the discharging control end, the third end of the switch tube Q3 is connected to the charging detection end, the parallel control subunit and the positive electrode of the external charger / load, the first end of the switch tube Q4 is connected to the pre-discharge control end, the second end of the switch tube Q4 is connected to the common end of the switch tube Q2 and the switch tube Q3, the third end of the switch tube Q4 is connected to the first end of the resistor R1, and the second end of the resistor R1 is respectively connected to the third end of the switch tube Q3, the charging detection end, the parallel control subunit and the positive electrode of the external charger / load.

[0046] The power supply unit is provided with a parallel control terminal and a parallel terminal, and the parallel control subunit includes a switch tube Q5.

[0047] Among them, the first end of the switch tube Q5 is connected to the parallel control end, the second end of the switch tube Q5 is respectively connected to the external charger / load positive end, the charging detection end, the second end of the resistor R1, and the third end of the switch tube Q3, and the third end of the switch tube Q5 is connected to the parallel end and the external parallel end.

[0048] The first control fuse end set by the front-end control unit 21 is the FUSE pin of the front-end control unit 21, the second control fuse end set by the data processing unit 23 is the FUSE pin of the data processing unit 23, the charging control end set by the front-end control unit 21 is the CHG pin, the discharging control end set by the front-end control unit 21 is the DSG pin, the pre-discharge control end of the front-end control unit 21 is the PDSG pin, the charging detection end set by the front-end control unit 21 is the PACK pin, the parallel control end set by the power supply unit is the EX B+VCC pin, and the parallel end set by the power supply unit is the EX B+ pin.

[0049] Specifically, the switch Q2 is a charging switch, and the switch Q3 is a discharging switch. When the P+ of the high-side driving unit 22 is connected to a load, the battery pack 1 is discharged, the CHG pin and the DSG pin of the front-end control unit 21 both output a high level, and the switch Q2 and the switch Q3 are turned on at the same time. When a load short circuit or an over-discharge of the battery pack 1 occurs, the high level output by the DSG pin of the front-end control unit 21 is converted to a low level, and the switch Q3 is turned off to control the high-side driving unit 22 to stop the discharging operation, wherein the load represents the user's device. When the P+ of the high-side driving unit 22 is an external power supply, the battery pack 1 is charged, the CHG pin and the DSG pin of the front-end control unit 21 both output a high level, and the switch Q2 and the switch Q3 are turned on at the same time. When a charging overvoltage occurs, the high level output by the CHG pin of the front-end control unit 21 is converted to a low level, and the switch Q2 is turned off to control the high-side driving unit 22 to stop the charging operation, wherein the power supply can be specifically 56V. The switch tube Q4 and the pre-discharge resistor R1 form a pre-discharge loop. The pre-discharge resistor R1 limits the current to prevent the pre-discharge current from being too large. The function of this circuit is to charge the rear load capacitor to prevent the battery from being short-circuited by the load capacitor when it is powered on instantly.

[0050] In the high-side driver unit 22, the FUSE pin of the high-side driver unit 22 is connected to the FUSE pin of the front-end control unit 21, and the FUSE pin of the high-side driver unit 22 is connected to the FUSE pin of the data processing unit 23. If the front-end control unit 21 cannot normally control the switch tube Q2 and the switch tube Q3, the front-end control unit 21 or the data processing unit 23 can send a control signal through the FUSE pin to control the three-terminal FUSE insurance F1 to actively fuse, thereby achieving permanent protection. The LD pin of the front-end control unit 21 is a load detection port, which detects whether the load is removed after a short circuit occurs, so as to achieve protection release. The PACK pin of the front-end control unit 21 is a charging voltage detection port, which detects whether the charging voltage reaches the charging request voltage, so as to control the opening of the switch tube Q2 to achieve charging operation. The switch tube Q5 mainly controls the current on and off between the parallel power packs, EX_B+VCC is a signal for providing the switch tube Q5, EX_B+ is an external parallel power pack, and the parallel power pack is the same portable energy storage system (battery pack + battery management module).

[0051] The embodiment of the present application provides a portable energy storage system, wherein the high-side drive unit of the portable energy storage system includes a protection subunit, a charge-discharge electronic unit, and a parallel control subunit, wherein the protection subunit is connected to a battery pack, a front-end control unit, a data processing unit, and a charge-discharge electronic unit, wherein the charge-discharge electronic unit is also connected to the front-end control unit, the parallel control subunit, and an external charger / load, and the parallel control subunit is connected to the front-end control unit, a power supply unit, an external parallel machine, and an external charger / load. The protection subunit can monitor and protect the battery pack in real time to ensure that it works in a safe state, the charge-discharge electronic unit can control the charging and discharging state of the battery pack according to the charge-discharge signal sent by the front-end control unit, so that the use of the battery pack is more flexible and efficient, and the design of the parallel control subunit allows the system to perform parallel operation, and can combine or separate power supplies according to power requirements, making the portable energy storage system more practical.

[0052] See also Figure 3 , Figure 3 It is a structural schematic diagram of a portable energy storage system provided in an embodiment of the present application.

[0053] The portable energy storage system includes at least two battery packs and at least two battery management modules.

[0054] The battery pack is connected to the battery management module one by one to form at least two battery management modules. One of the at least two battery management modules is selected as the host, and the remaining battery management modules are selected as slaves. The battery management modules of the slaves are connected in sequence and then connected to the battery management module of the host. The negative electrode of the external charger / load of the host is connected to the negative terminal of the external charger / load of the slave.

[0055] Among them, the battery management module of the host communicates with the inverter through the CAN bus, P+ and P- are connected to the positive and negative poles of the inverter respectively, and the inverter is connected to the external AC / power supply. The EX_B+ pin of the host is connected to the P+ of the second slave, and the second slave port EX_B+ is connected to the P+ of the third slave. By analogy, the host can connect n slaves, and the master and slaves are connected through 485 communication. The master and slave addresses are automatically assigned and identified by software, such as 00-host / 01-slave 1 / 02-slave 2, etc. More specifically, for safety reasons, when the host detects that there is a parallel connection, all charging and discharging switch tubes in the powered battery pack in the parallel system are turned off when the communication connection is not established. Only after the communication connection is successfully established, the switch tube is closed or turned off through the parallel demand scheduling.

[0056] Existing portable energy storage systems are usually designed to be used as hosts, and the paralleling scheme is not integrated into the battery management module, and the paralleling capacity will limit the number of units, and the number of paralleling power is only one or two. The portable energy storage system provided in the embodiment of the present application can be used as a host and a slave, and the paralleling is integrated into the battery management module, which improves the integration of portable energy storage products, and also realizes paralleling capacity without limiting the number of paralleling.

[0057] In the embodiment of the present application, the portable energy storage system includes at least two battery packs and at least two battery management modules. The battery packs and the battery management modules are connected one by one to form at least two battery management modules. One of the at least two battery management modules is selected as the host, and the other battery management modules are used as slaves. The battery management modules of the slaves are connected in sequence and then connected to the battery management module of the host. The negative electrode of the external charger / load of the host is connected to the negative electrode of the external charger / load of the slave. Based on the connection relationship between the various parts of the portable energy storage system, multiple power packs can be incorporated, with low cost, and each can be used as a host alone, which improves the convenience of parallel connection.

[0058] An embodiment of the present application provides an energy storage power supply, which includes the portable energy storage system of the above embodiment. For technical details and beneficial effects not fully described in the energy storage power supply embodiment, please refer to the portable energy storage system provided in the embodiment of the present application.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the idea of ​​the present application, the technical features in the above embodiments or different embodiments may also be combined, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A portable energy storage system, It is characterized in that The portable energy storage system includes a battery pack and a battery management module; The battery management module is connected to the battery pack; wherein the battery management module is integrated with a functional unit, and the functional unit is used to execute the preset function of the portable energy storage system; The battery management module also includes a front-end control unit, a high-side drive unit and a data processing unit; The front-end control unit is connected to the battery pack, the high-side drive unit and the data processing unit respectively, and the data processing unit is also connected to the high-side drive unit and the functional unit respectively; The front-end control unit is used to obtain battery data of the battery pack and output a control signal to the high-side drive unit based on the battery data; The high-side driving unit is used to receive the control signal and control the charging and discharging state of the battery pack according to the control signal; The front-end control unit is also used to output the battery data to the data processing unit; The data processing unit is used to receive the battery data and process the battery data so that the functional unit performs the preset function according to the processed battery data, wherein the processed battery data includes communication data and battery status data.

2. The portable energy storage system according to claim 1, It is characterized in that The data processing unit is provided with a communication control terminal, a display control terminal and an LED control terminal, and the functional unit includes a communication subunit, a display subunit and an LED subunit; The communication subunit is connected to the communication control terminal and the external device respectively, the display subunit is connected to the display control terminal, and the LED subunit is connected to the LED control terminal; The communication subunit is used to receive the communication data and send the communication data to the external device via 485 bus, CAN bus, and Bluetooth; The display subunit is used to receive the battery status data and visually display the battery status data; The LED subunit is used to receive the battery status data and control the display status of the LED indicator light based on the battery status data.

3. The portable energy storage system according to claim 1, It is characterized in that The battery management module also includes a power supply unit; The power supply unit is connected to the battery pack, the high-side driver unit and the data processing unit respectively, and is used to supply power to the battery pack, the high-side driver unit and the data processing unit.

4. The portable energy storage system according to claim 3, It is characterized in that The high-side drive unit includes a protection subunit, a charge and discharge electronic unit and a parallel control subunit; The protection subunit is connected to the battery pack, the front-end control unit, the data processing unit and the charging and discharging electronic unit. The charging and discharging electronic unit is also connected to the front-end control unit, the parallel control subunit and an external charger / load. The parallel control subunit is connected to the front-end control unit, the power supply unit, an external parallel machine and an external charger / load. The charging and discharging electronic unit is used to receive the control signal sent by the front-end control unit, and control the charging and discharging state of the battery pack according to the control signal.

5. The portable energy storage system according to claim 4, It is characterized in that The front-end control unit is provided with a first control fuse end, the data processing unit is provided with a second control fuse end, and the protection subunit includes a fuse F1 and a switch tube Q1; The first end of the fuse F1 is connected to the positive electrode of the battery pack, the second end of the fuse F1 is connected to the charging and discharging electronic unit, the third end of the fuse F1 is connected to the second end of the switch tube Q1, the first end of the switch tube Q1 is respectively connected to the first control fuse end and the second control fuse end, and the third end of the switch tube Q1 is grounded.

6. The portable energy storage system according to claim 5, It is characterized in that The front-end control unit is further provided with a charging control terminal, a discharging control terminal, a pre-discharging control terminal and a charging detection terminal, and the charging and discharging electronic unit includes a switch tube Q2, a switch tube Q3, a switch tube Q4 and a resistor R1; The third end of the switch tube Q2 is connected to the second end of the fuse F1, the second end of the switch tube Q2 is connected to the second end of the switch tube Q3, the first end of the switch tube Q2 is connected to the charging control end, the first end of the switch tube Q3 is connected to the discharging control end, the third end of the switch tube Q3 is connected to the charging detection end, the parallel control subunit and the positive electrode of the external charger / load, the first end of the switch tube Q4 is connected to the pre-discharge control end, the second end of the switch tube Q4 is connected to the common end of the switch tube Q2 and the switch tube Q3, the third end of the switch tube Q4 is connected to the first end of the resistor R1, and the second end of the resistor R1 is respectively connected to the third end of the switch tube Q3, the charging detection end, the parallel control subunit and the positive electrode of the external charger / load.

7. The portable energy storage system according to claim 6, It is characterized in that The power supply unit is provided with a parallel control terminal and a parallel terminal, and the parallel control subunit includes a switch tube Q5; The first end of the switch tube Q5 is connected to the parallel control end, the second end of the switch tube Q5 is respectively connected to the external charger / load positive end, the charging detection end, the second end of the resistor R1, and the third end of the switch tube Q3, and the third end of the switch tube Q5 is connected to the parallel end and the external parallel machine.

8. The portable energy storage system according to claim 1, It is characterized in that The portable energy storage system includes at least two battery packs and at least two battery management modules; The battery packs are connected to the battery management modules in a one-to-one correspondence to form at least two battery management modules, one of the at least two battery management modules is selected as a host, and the remaining battery management modules are selected as slaves. The battery management modules of the slaves are connected in sequence and then connected to the battery management modules of the host, and the negative electrode of the external charger / load of the host is connected to the negative terminal of the external charger / load of the slave.

9. An energy storage power source, It is characterized in that The energy storage power supply comprises the portable energy storage system as described in any one of claims 1-8.

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