Split modular battery pack

Abstract

The utility model discloses a split modular battery pack, including first battery module, second battery module, external battery management system BMS, first connecting device and second connecting device, first connecting device is electrically connected with first battery module external battery management system BMS respectively, second connecting device is electrically connected with second battery module external battery management system BMS respectively, external battery management system BMS is connected with system total output interface, the battery module of this application adopts split, with energy storage cell replaces special communication cell, can effectively reduce the weight of single package, is convenient for transportation and handling, simultaneously, can significantly reduce the cost of system, effectively improves the overall performance of system, and can effectively improve maintenance efficiency, reduce maintenance cost, and, modular split setting mode makes that user can adjust the configuration of battery capacity according to actual demand, has higher configuration flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a split modular battery pack. Background Technology

[0002] With the rapid development of energy storage technology, the cost of energy storage cells has continued to decline and is now lower than the price of cells used in traditional communication base station battery packs. Applying energy storage cells to communication base station battery packs can significantly reduce battery pack costs. Furthermore, the performance of energy storage cells is superior to that of backup power cells.

[0003] The standard operating voltage of a communication base station is 48V, which typically requires 15 to 16 lithium batteries connected in series to meet the voltage requirement. However, due to the large number of lithium batteries required, existing battery packs often suffer from the following problems: (1) the overall battery pack is large and heavy, making transportation and installation difficult; (2) when a cell or module in the battery pack fails, the entire battery pack needs to be replaced, resulting in high maintenance costs and low efficiency; (3) the battery management system (BMS) is highly integrated with the battery pack, making fault diagnosis and maintenance inconvenient; and (4) the battery capacity cannot be flexibly configured according to actual needs. Therefore, a new type of communication base station battery pack that can solve the above problems is urgently needed. Utility Model Content

[0004] This utility model provides a split modular battery pack, which aims to solve the problems of existing battery packs, such as large overall size, heavy weight, difficulty in transportation and installation, high maintenance cost, low maintenance efficiency, inconvenient fault diagnosis and maintenance, and inability to flexibly configure battery capacity according to actual needs.

[0005] To address the aforementioned technical problems, this utility model provides a modular battery pack, comprising a first battery module, a second battery module, an external battery management system (BMS), a first connection device, and a second connection device. The first connection device is electrically connected to both the first battery module and the external BMS. The second connection device is electrically connected to both the second battery module and the external BMS. The external BMS is connected to the system's main output interface.

[0006] In a preferred embodiment, the first battery module includes a plurality of first battery cells connected in series; the second battery module includes a plurality of second battery cells connected in series.

[0007] In a preferred embodiment, both the first battery unit and the second battery unit are lithium iron phosphate battery cells; the nominal voltage of a single lithium iron phosphate battery cell is 3.2V.

[0008] In a preferred embodiment, the first battery module and the second battery module have the same structure and electrical parameters, and the first battery module and the second battery module are independently installed. This allows the first battery module and the second battery module to be transported and installed independently, providing greater convenience.

[0009] In a preferred embodiment, the first battery module is a battery module connected in 8 or 4 strings; the second battery module is a battery module connected in 8 or 4 strings.

[0010] In a preferred embodiment, one or two first battery modules are provided; when two first battery modules are provided, the two first battery modules are respectively connected to the external battery management system (BMS).

[0011] In a preferred embodiment, one or two second battery modules are provided; when two second battery modules are provided, each second battery module is connected to the external battery management system (BMS). Thus, the external battery management system (BMS) of this application can be combined with one to four battery modules, making it suitable for applications with different voltage levels.

[0012] In a preferred embodiment, the external battery management system (BMS) is set up independently relative to the first battery module / second battery module. The external BMS can monitor and manage the operating status of both the first and second battery modules.

[0013] In a preferred embodiment, the external battery management system (BMS) is adapted to both the first battery module and the second battery module. The external BMS includes a fault diagnosis and alarm module, which is connected to both the first and second battery modules. This configuration allows the external BMS to monitor each battery module individually and quickly locate the faulty module.

[0014] In a preferred embodiment, the external battery management system (BMS) is equipped with a remote monitoring and management module, which is connected to the first battery module and the second battery module respectively.

[0015] In a preferred embodiment, the output voltage of the system's total output interface is 48V.

[0016] In a preferred embodiment, both the first connecting device and the second connecting device are quick-connect devices; the quick-connect device is a quick-connect device with reverse connection protection function.

[0017] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects: This application adopts a split battery module and replaces the dedicated communication battery cell with an energy storage cell, which can effectively reduce the weight of a single package, making it easier to transport and handle; at the same time, it can significantly reduce the system cost and effectively improve the overall performance of the system. This application, through its modular split design, allows faulty battery modules to be replaced individually, effectively improving maintenance efficiency and reducing maintenance costs; furthermore, the modular split design allows users to adjust the battery capacity configuration according to actual needs, providing high configuration flexibility. The Battery Management System (BMS) is externally mounted, facilitating upgrades and maintenance, providing intelligent management and more comprehensive monitoring functions. This application has a simple structure, is easy to disassemble and assemble, is easy to maintain, has good stability, and is economical, safe, and practical. It can be implemented without major modifications to the battery module structure, making it suitable for large-scale production applications and effectively solving the technical problems of difficult battery module transportation, high maintenance costs, and inflexible configuration in the prior art. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a split modular battery pack according to an embodiment of the present invention.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] Specifically, such as Figure 1 As shown, this embodiment of the present invention provides a split modular battery pack, including a first battery module 10, a second battery module 20, an external battery management system (BMS) 30, a first connecting device 40, and a second connecting device 50; the first connecting device 40 is electrically connected to the first battery module 10 and the external battery management system (BMS) 30 respectively; the second connecting device 50 is electrically connected to the second battery module 20 and the external battery management system (BMS) 30 respectively; the external battery management system (BMS) 30 is connected to the system's main output interface 60.

[0024] In a preferred embodiment, the first battery module 10 includes a plurality of first battery units 11 connected in series; the second battery module 20 includes a plurality of second battery units 21 connected in series.

[0025] In a preferred embodiment, both the first battery cell 11 and the second battery cell 21 are lithium iron phosphate (LFP) battery cells; the nominal voltage of a single LFP battery cell is 3.2V. In this embodiment, the battery cells have high cycle life and safety performance, which facilitates the improvement of the overall system performance.

[0026] This application uses a split battery module and replaces the dedicated communication battery cell with an energy storage cell, which can effectively reduce the weight of a single package and facilitate transportation and handling; at the same time, it can significantly reduce the cost of the system and effectively improve the overall performance of the system.

[0027] In a preferred embodiment, the first battery module 10 and the second battery module 20 have the same structure and electrical parameters, and the first battery module 10 and the second battery module 20 are independently configured. This allows the first battery module 10 and the second battery module 20 to be transported and installed independently, providing good transportation and installation convenience.

[0028] This application adopts a modular, separate design, which allows faulty battery modules to be replaced individually, effectively improving maintenance efficiency and reducing maintenance costs. Furthermore, the modular, separate design allows users to adjust the battery capacity configuration according to actual needs, providing high configuration flexibility.

[0029] In a preferred embodiment, the first battery module 10 is a battery module with 8 strings (output rated voltage of 25.6V) or 4 strings (output rated voltage of 12.8V) connected together; the second battery module 20 is a battery module with 8 strings (output rated voltage of 25.6V) or 4 strings (output rated voltage of 12.8V) connected together.

[0030] For example, in this embodiment, the first battery module 10 includes eight lithium iron phosphate energy storage cells with a nominal voltage of 3.2V, which are connected in series. The rated voltage of the first battery module is 25.6V. The module shell is made of flame-retardant ABS material, and a temperature sensor and voltage acquisition harness are installed inside the module. The structure of the second battery module 20 is the same as that of the first battery module 10. As a preferred embodiment, one or two first battery modules 10 are provided; when two first battery modules 10 are provided, the two first battery modules 10 are respectively connected to the external battery management system BMS 30. Each first battery module is provided with an independent connector interface.

[0031] In a preferred embodiment, one or two second battery modules 20 are provided; when two second battery modules 20 are provided, each second battery module 20 is connected to the external battery management system 30. Each second battery module has an independent connector interface. In this way, the external battery management system 30 of this application can be combined with one to four battery modules to suit applications with different voltage levels.

[0032] In a preferred embodiment, the external battery management system (BMS) 30 is independently configured relative to the first battery module 10 and the second battery module 20. The external BMS 30 allows for monitoring and management of the operating status of the first battery module 10 and the second battery module 20. The external BMS facilitates upgrades and maintenance, provides intelligent management, and offers more comprehensive monitoring functions.

[0033] In this embodiment, the external battery management system BMS 30 uses a 32-bit ARM processor, has the ability to monitor 16 series batteries, supports CAN and RS485 communication protocols, and has functions such as charge and discharge control, temperature protection, and overvoltage and undervoltage protection.

[0034] In a preferred embodiment, the external battery management system (BMS) 30 is adapted to both the first battery module 10 and the second battery module 20. The external battery management system (BMS) 30 includes a fault diagnosis and alarm module (not shown in the figure), which is connected to both the first battery module 10 and the second battery module 20. This configuration allows the external battery management system (BMS) 30 to monitor each battery module individually and quickly locate the faulty battery module.

[0035] In a preferred embodiment, the external battery management system (BMS) 30 is equipped with a remote monitoring and management module (not shown in the figure), which is connected to the first battery module 10 and the second battery module 20 respectively.

[0036] In a preferred embodiment, the output voltage of the system's total output interface 60 is 48V.

[0037] In a preferred embodiment, both the first connecting device 40 and the second connecting device 50 are quick-connect devices; the quick-connect device is a quick-connect device with reverse connection protection. The connection is achieved through the first connecting device 40 and the second connecting device 50, ensuring reliable connection and low contact resistance. In this embodiment, both the first connecting device 40 and the second connecting device 50 use aviation plugs with a rated current of 150A and waterproof / dustproof (IP65) functionality.

[0038] This application features a simple structure, easy assembly and disassembly, convenient maintenance, good stability, and is economical, safe, and practical. It can be implemented without major modifications to the structure of the battery module and can be used for large-scale production applications. It can effectively solve the technical problems of difficult transportation, high maintenance costs, and inflexible configuration of battery modules in the prior art.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular, split-type battery pack, characterized in that, It includes a first battery module, a second battery module, an external battery management system (BMS), a first connection device, and a second connection device; the first connection device is electrically connected to the first battery module and the external battery management system (BMS) respectively; the second connection device is electrically connected to the second battery module and the external battery management system (BMS) respectively; the external battery management system (BMS) is connected to the system's main output interface.

2. The modular battery pack according to claim 1, characterized in that, The first battery module includes several first battery cells connected in series; the second battery module includes several second battery cells connected in series.

3. The modular battery pack according to claim 1, characterized in that, The first battery module and the second battery module have the same structure and electrical parameters, and the first battery module and the second battery module are set independently of each other.

4. The modular battery pack according to claim 1, characterized in that, The first battery module is a battery module connected in 8 or 4 strings; the second battery module is a battery module connected in 8 or 4 strings.

5. The modular battery pack according to claim 1, characterized in that, One or two first battery modules are provided; when two first battery modules are provided, the two first battery modules are respectively connected to the external battery management system (BMS).

6. The modular battery pack according to claim 1, characterized in that, One or two second battery modules are provided; when two second battery modules are provided, the two second battery modules are respectively connected to the external battery management system (BMS).

7. The modular battery pack according to claim 1, characterized in that, The external battery management system (BMS) is set up independently relative to the first battery module / the second battery module.

8. The modular battery pack according to claim 1, characterized in that, The external battery management system (BMS) is adapted to the first battery module and the second battery module respectively; the external battery management system (BMS) is equipped with a fault diagnosis and alarm module, which is connected to the first battery module and the second battery module respectively.

9. The modular battery pack according to claim 1, characterized in that, The external battery management system (BMS) is equipped with a remote monitoring and management module, which is connected to the first battery module and the second battery module respectively.

10. The modular battery pack according to claim 1, characterized in that, Both the first connecting device and the second connecting device are quick-connect devices; the quick-connect device is a quick-connect device with reverse connection protection function.

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