Novel battery module

Abstract

The utility model relates to the technical field of novel battery modules, and provides a novel battery module which is convenient for replacing rear assemblies with different capacities according to requirements and comprises a front assembly provided with a BMS (Battery Management System) board and a rear assembly used for installing the battery module, and the front assembly is detachably connected with the rear assembly; the rear assembly comprises a rear shell and a battery bin located in the rear shell, the front assembly comprises a front shell, a positive electrode connecting piece and a negative electrode connecting piece, the positive electrode connecting piece and the negative electrode connecting piece are used for being electrically connected with the battery pack, and the connecting end of the positive electrode connecting piece and the connecting end of the negative electrode connecting piece both penetrate through the rear shell and extend into the battery bin.

Description

Technical Field

[0001] The utility model relates to the technical field of novel battery modules, and specifically to a novel battery module. Background Art

[0002] Lithium iron phosphate battery modules for high-frequency switching power supply systems are specifically designed for high-frequency switching power supply applications. They primarily utilize lithium iron phosphate (LiFePO4) as the battery material. They offer high safety, long cycle life, high power output, environmental friendliness, and a wide range of applications. They are suitable for electric vehicles, energy storage systems, UPS power supplies, and other applications, particularly where high safety and long life are crucial.

[0003] Currently, Chinese patent application number 202121759631.3 discloses a battery pack structure. The battery pack structure includes: a housing and a power supply module; the power supply module includes a battery pack and a BMS board. The BMS board (abbreviation of battery management system) is located on one side of the battery pack and is electrically connected to the battery pack; the housing includes an upper shell and a lower shell corresponding to the upper shell. The lower shell includes a bottom plate, a side plate fixedly connected to one end of the bottom plate, and several output terminals embedded in the side plate; the battery pack is mounted on the bottom plate, and the BMS board is mounted on the side plate. The several output terminals are electrically connected to the BMS board. The utility model achieves this by mounting the BMS on the side plate and embedding the output terminals in the side plate.

[0004] This battery pack structure embeds the BMS board inside the housing, encapsulating the battery pack and BMS board within a single, integrated housing. This results in a complex and tightly coupled internal structure within the battery pack, cumbersome assembly processes, and demanding manufacturing processes. Failures are virtually impossible to repair. Furthermore, changes in battery capacity require resizing and redesigning the entire module, resulting in limited adaptability and flexibility. Utility Model Content

[0005] The utility model provides a novel battery module, which is convenient for replacing rear components of different capacities according to needs.

[0006] The technical solution of the utility model is as follows:

[0007] A novel battery module comprises a front assembly on which a BMS board is mounted and a rear assembly for mounting the battery module, wherein the front assembly and the rear assembly are detachably connected;

[0008] The rear assembly includes a rear shell and a battery compartment located in the rear shell, and the front assembly includes a front shell, a positive electrode connecting plate and a negative electrode connecting plate for electrically connecting to the battery pack, and the connecting end of the positive electrode connecting plate and the connecting end of the negative electrode connecting plate both extend through the rear shell into the battery compartment.

[0009] Furthermore, a display screen for displaying the charge and discharge, voltage, current, SOC value and status of the battery pack is provided on the side of the front component facing away from the rear component.

[0010] Furthermore, an operation button for setting the alarm voltage value and current value is provided on the side of the front component facing away from the rear component.

[0011] Furthermore, a RS485 interface for interconnecting with the outside world is provided on the side of the front assembly facing away from the rear assembly.

[0012] Furthermore, a plurality of indicator lights for displaying the SOC and the connection status of each interface are provided on the side of the front component facing away from the rear component.

[0013] Furthermore, an extension plate in a "mouth"-shaped structure is provided on one side of the rear housing facing the front housing. The extension plate is located outside the front housing and is fixedly connected to the front housing by bolts.

[0014] Furthermore, the inner side of the front housing is abutted with heat dissipation fins for connecting to the BMS board.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] Unlike the existing technology that embeds the BMS board inside the shell and encapsulates the battery pack and BMS board in a complete shell, the utility model adopts a front-to-back combination of the front and rear components, which has a simple and compact structure, simple assembly process, easy disassembly and assembly, and easy maintenance in the event of a fault;

[0017] Unlike the existing technology which has no display screen and indicator lights, the present invention is equipped with a display screen on the front assembly, which can display the battery pack's charge and discharge, voltage, current, SOC and other values ​​and status in real time, and can promptly judge the risk status of the battery module. In addition, the indicator lights intuitively display the SOC and the connection status of each interface.

[0018] Different from the existing technology which only has output terminals but no signal interface, the front assembly of the utility model is designed with two RS485 interfaces, which can be interconnected with the outside world and facilitate remote signaling and telemetry of the battery module;

[0019] Unlike the existing technology, which requires the entire module to be redesigned in size and structure when the battery capacity requirement changes, the present invention can replace the rear components (i.e., bare battery modules) of different capacities by simply removing the connecting screws of the rear components, which makes the present invention easily adaptable to usage scenarios with various capacities. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is an exploded view of this embodiment;

[0022] Figure 2 Schematic diagram of the structure of this embodiment;

[0023] Figure 3 is a cross-sectional view of the front assembly in this embodiment;

[0024] Figure 4 Schematic diagram of the structure of the rear assembly in this embodiment;

[0025] Figure 5 is a cross-sectional view of this embodiment;

[0026] Figure 6 This is a pin signal indication diagram of the display screen in this embodiment.

[0027] In the figure: 1. Front housing; 11. Positive electrode connecting plate; 12. Negative electrode connecting plate; 13. Heat dissipation fin; 2. Display screen; 3. BMS board; 4. External positive electrode; 5. External negative electrode; 6. RS485 interface; 7. Indicator light; 8. Operation button; 9. Rear housing; 91. Battery compartment; 92. Extension board. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 6 As shown, a new type of battery module includes a front assembly on which a BMS board 3 is installed and a rear assembly for installing the battery module, and the front assembly and the rear assembly are detachably connected. Specifically, the front assembly includes a front shell 1, a positive electrode connecting piece 11 and a negative electrode connecting piece 12 for electrically connecting to the battery pack, and the rear assembly includes a rear shell 9 and a battery compartment 91 located in the rear shell 9. An extension plate 92 in a "mouth" shape is provided on the side of the rear shell 9 facing the front shell 1. The extension plate 92 is located on the outside of the front shell 1 and is fixedly connected to the front shell 1 by bolts. This plug-in design facilitates the positioning of the front shell 1 and the rear shell 9 during assembly, and at the same time, the connection strength after assembly is improved by limiting the four degrees of freedom.

[0030] Moreover, this design allows you to replace different rear components (i.e., bare cell modules) by removing the screws or bolts connecting the front and rear components, making this embodiment adaptable to various capacity usage scenarios. When the capacity requirement changes, the depth of the rear component 9 can change, but the width and height remain unchanged, and it can still be directly connected to the front component 1.

[0031] The connection end of the positive electrode connecting plate 11 and the connection end of the negative electrode connecting plate 12 both extend through the rear housing 9 into the battery compartment 91 and are electrically connected to the batteries in the battery compartment 91. The battery compartment 91 preferably contains 16 3.2V lithium iron phosphate battery cells connected in series. In conjunction with the BMS board 3 and related electrical components in this embodiment, it has functions such as real-time monitoring of single-cell voltage and temperature, thermal management and passive balancing, real-time monitoring of battery string voltage and current, insulation monitoring, high-precision SOC / SOH estimation, fault diagnosis and alarm protection, balancing management, data communication, setting alarm values ​​for each battery string, and real-time display.

[0032] In addition, the front assembly in this embodiment is equipped with an external positive electrode 4 and an external negative electrode 5 for connecting to an external load on the side facing away from the rear assembly, as well as a display screen 2 for displaying values ​​and status such as battery pack charge and discharge, voltage, current, and SOC (battery state of charge). Display screen 2 is electrically connected to a BMS board 3 within the front assembly, making the operation of this embodiment intuitive, maintainable, and highly safe. The BMS board 3 can adopt a model compliant with the Q / ZTT2235.1-2019 "Technical Requirements and Testing Specifications for Lithium Iron Phosphate Battery Packs (Integrated) Part 1: Backup Power" protocol, enabling efficient management and control of the lithium iron phosphate battery module. Furthermore, the front assembly is equipped with an RS485 interface 6 for external interconnection on the side facing away from the rear assembly, enabling information interconnection and facilitating subsequent remote signaling and telemetry of the battery module.

[0033] In this embodiment, the external positive electrode 4 and the external negative electrode 5 are made of highly conductive metal materials, such as nickel-plated copper or aluminum alloy, to reduce resistance and improve conductivity. These materials also offer excellent corrosion resistance, extending battery life. They are typically cylindrical or pillar-shaped, facilitating quick and secure connection with cables or other components. Some external positive electrodes 4 and 5 also feature threads or plugs to enhance connection security and mitigate the risk of poor contact under vibration or impact. They are often equipped with insulating sleeves or coatings to effectively prevent short circuits and accidental contact. Furthermore, the use of high-temperature and wear-resistant insulating materials ensures stability in a variety of operating environments. Furthermore, protective covers can be optionally designed for the external positive electrode 4 and the external negative electrode 5 to protect against intrusion from external environmental factors (such as moisture and dust), further enhancing battery safety and durability. Clear markings, such as "+" and "-" symbols, ensure quick identification during connection and reduce the risk of misconnection.

[0034] In addition, this embodiment also features operation buttons 8 for setting alarm voltage and current values ​​on the side of the front-mounted component facing away from the rear-mounted component. These buttons are used not only to set voltage and current parameters but also to view related information. Several indicator lights 7 are also located on the side of the front-mounted component facing away from the rear-mounted component, displaying the SOC and the connection status of various interfaces. Both the operation buttons 8 and the indicator lights 7 are electrically connected to the BMS board 3.

[0035] The BMS board 3 and the display screen 2 in this embodiment can be integrated and configured as supporting equipment for base station BMS series energy storage products. This can provide intuitive displays of battery parameters, temperature, BMS operating status, etc., and has the characteristics of simple operation and a user-friendly interface.

[0036] The inner side of the front housing 1 is also abutted with heat dissipation fins 13 for connecting to the BMS board 3 , and the heat dissipation function of this embodiment is improved by utilizing the heat conduction of the metal front housing 1 .

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new battery module, characterized in that: It comprises a front assembly on which a BMS board (3) is installed and a rear assembly for installing a battery module, wherein the front assembly and the rear assembly are detachably connected; The rear assembly comprises a rear housing (9) and a battery compartment (91) located in the rear housing (9); the front assembly comprises a front housing (1), a positive electrode connecting piece (11) and a negative electrode connecting piece (12) for electrically connecting to the battery pack; the connecting end of the positive electrode connecting piece (11) and the connecting end of the negative electrode connecting piece (12) both pass through the rear housing (9) and extend into the battery compartment (91).

2. A new battery module according to claim 1, characterized in that: A display screen (2) for displaying the charge and discharge, voltage, current, SOC value and status of the battery pack is provided on the side of the front assembly facing away from the rear assembly.

3. A new battery module according to claim 1 or 2, characterized in that: An operation button (8) for setting an alarm voltage value and a current value is provided on the side of the front component facing away from the rear component.

4. A new battery module according to claim 1 or 2, characterized in that: The side of the front assembly facing away from the rear assembly is provided with an RS485 interface (6) for interconnection with the outside world.

5. A new battery module according to claim 1 or 2, characterized in that: A plurality of indicator lights (7) for displaying the SOC and the connection status of each interface are provided on the side of the front assembly facing away from the rear assembly.

6. A new battery module according to claim 1 or 2, characterized in that: An extension plate (92) in a "mouth"-shaped structure is provided on the side of the rear housing (9) facing the front housing (1); the extension plate (92) is located outside the front housing (1) and is fixedly connected to the front housing (1) via bolts.

7. A new battery module according to claim 1 or 2, characterized in that: The inner side of the front housing (1) is in contact with heat dissipation fins (13) for connecting to the BMS board (3).

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