4G communication outdoor standby power lithium battery

Abstract

The utility model discloses a 4G communication outdoor standby power lithium battery which is used for providing power support for outdoor communication equipment, the whole lithium battery comprises a box body, a lithium battery module and a BHC module, the box body comprises a heat dissipation front cover, a cylinder body and a rear cover, the lithium battery module is arranged in the cylinder body, and the BHC module is fixed on the heat dissipation front cover through a connecting piece; the lithium battery module realizes charging and discharging management, temperature monitoring and safety protection through the BHC module; a 4G module is arranged on the heat dissipation front cover and used for supporting remote monitoring and remote upgrading, and a user can check information such as the battery state, the electric quantity and the temperature in real time through a mobile terminal and receive an abnormal alarm. The system has the characteristics of compact structure, convenience in installation, remote intelligent management and the like, is suitable for outdoor scenes such as communication base stations and monitoring equipment, and effectively improves the reliability and maintenance efficiency of equipment power supply.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a 4G communication outdoor backup lithium battery. Background Technology

[0002] With the rapid development of the Internet of Things (IoT) and remote monitoring technologies, the power demand of outdoor equipment is increasing daily. Traditional outdoor backup lithium batteries only provide power and cannot achieve remote monitoring and data transmission. Therefore, developing an outdoor backup lithium battery with integrated 4G communication capabilities can effectively solve the power supply and remote communication problems of outdoor equipment.

[0003] Traditional outdoor backup lithium batteries typically only have basic power storage and output functions, lacking remote monitoring and intelligent management capabilities. For example, Chinese patent application CN220934301U provides a battery pack and energy storage device. This patent technology involves a lithium battery module structure. Although the design improves the electrical connection stability and mechanical strength of the battery through aluminum busbar connection, epoxy board insulation, and sheet metal side plate reinforcement, the lack of a 4G module results in the inability to remotely monitor and limit intelligent management. Adding a 4G module can realize remote monitoring, fault warning and intelligent management, expand application scenarios and reduce maintenance costs. Summary of the Invention

[0004] In view of the above, this utility model provides a 4G communication outdoor backup lithium battery that can provide power while enabling remote data transmission and monitoring.

[0005] An outdoor backup lithium battery for 4G communication includes a housing, a lithium battery module, a BHC (Bi-direction H-bridge Converter) module, and a 4G module. The lithium battery module, BHC module, and 4G module are all installed and fixed within the housing. The BHC module is connected to the lithium battery module and is used to convert the output voltage or external input voltage of the lithium battery module and monitor the operating status of the lithium battery module. The 4G module is connected to the BHC module and is used to wirelessly transmit relevant electrical information of the BHC module and the lithium battery module to a host computer, enabling the host computer to remotely monitor the overall operation of the lithium battery.

[0006] Furthermore, the housing consists of a heat dissipation front cover, a cylindrical body, and a rear cover. Both the front and rear covers are detachable and are respectively installed and fixed to the front and rear sides of the cylindrical body. The heat dissipation front cover is made of aluminum alloy panel, with an antenna on the upper side, a communication interface, a power connection port, a vent valve, and a button on the lower side, and an indicator light and a handle on the outer side. The BHC module and 4G module are both installed inside the heat dissipation front cover. This integrated design of the heat dissipation front cover and BHC module effectively protects the lithium battery module from corrosion during disassembly and assembly.

[0007] Furthermore, the upper side of the heat dissipation front cover is also provided with a handle for carrying. The cylinder body is connected to the heat dissipation front cover and rear cover respectively through connectors and sealed with sealing strips. In the installed state, both sealing strips are in a compressed state to achieve the sealing of the box structure and achieve IP65 waterproof and dustproof effect.

[0008] Furthermore, the 4G module is fixed to the mounting base inside the heat dissipation front cover with screws, and the 4G module is connected to the antenna via a connecting cable.

[0009] Furthermore, the feed section of the antenna extends to form an external threaded post, and a sealing ring is fitted onto the root of the external threaded post. The upper side of the heat dissipation front cover has a mounting hole that mates with the external threaded post. When the external threaded post is screwed into the mounting hole, the sealing ring is compressed and expands radially, forming an interference seal against the inner wall of the mounting hole, thereby achieving an IP65 waterproof and dustproof effect. After the external threaded post passes through the mounting hole, a hexagonal nut is screwed in to fasten it and prevent loosening.

[0010] Furthermore, the vent valve is fixed to the lower side of the heat dissipation front cover to balance the air pressure inside and outside the box and prevent liquid and dust from entering the box, thereby achieving an IP65 waterproof and dustproof effect.

[0011] Furthermore, the lithium battery module includes multiple cells arranged in a front-to-back layout, connected in series by aluminum busbars. The lithium battery module is wrapped with epoxy board for insulation protection and then fixed with plastic steel straps. The narrow sides of the lithium battery module are reinforced and protected with side plates. Insulating brackets are installed at both ends of the lithium battery module for fixing and insulation. It is then fixed by eight pressure plates (top, bottom, front, and back). The pressure plates are installed in conjunction with the connection holes inside the cylinder to ensure the stability and reliability of the lithium battery module inside the cylinder.

[0012] Furthermore, the BHC module adopts a lithium battery management system with intelligent bidirectional DC-DC conversion function, which has charge and discharge control function, voltage, current and temperature detection and protection function, short circuit protection function, SOC calculation function and charging equalization function.

[0013] Furthermore, the BHC module includes a PCBA (Printed Circuit Assembly) board, Mylar sheet, and heat sink, wherein the heat sink is fixed to the PCBA board with connectors to provide heat dissipation for the power MOSFETs on the PCBA board; the Mylar sheet is fixed to the back of the PCBA board with rivets and has an insulating function.

[0014] Furthermore, the components on the PCBA board are attached to the inner side of the heat dissipation front cover via thermally conductive silicone pads, which are used to dissipate the heat from the components on the PCBA board to the outside through the heat dissipation front cover; the BHC module is installed between the lithium battery module and the heat dissipation front cover, so that the heat from the lithium battery is transferred from the lithium battery module to the BHC module, and then dissipated through the heat dissipation front cover.

[0015] Based on the above technical solution, this utility model has the following beneficial technical effects:

[0016] 1. High adaptability. This utility model features a front cover connected to the edge of the cylindrical body with screws and sealed with a sealing strip, achieving a waterproof function. This makes the body structure meet the IP65 waterproof rating, effectively preventing the intrusion of dust, rainwater, and corrosive substances, and ensuring stable operation in harsh outdoor environments. It is suitable for various outdoor applications.

[0017] 2. Excellent heat dissipation. This utility model adopts a natural cooling method, that is, a front cover heat dissipation structure with a larger heat dissipation area, which provides sufficient conditions for heat dissipation inside the battery pack. It also simplifies assembly and maintenance by reducing fan components, which helps to reduce the cost of the battery pack. The good heat dissipation design can significantly reduce the temperature of the equipment, improve stability and enhance safety, support high-load operation, and optimize energy efficiency and user experience.

[0018] 3. High reliability. This utility model incorporates a built-in power management module and multiple protection mechanisms to ensure safe use of the battery in complex outdoor environments and extend battery life.

[0019] 4. Remote Monitoring and Intelligent Management. This invention utilizes a 4G module, enabling remote real-time monitoring of the lithium battery module. Users can check key information such as battery level, temperature, charge / discharge status, and health status anytime, anywhere via mobile phones, computers, and other terminal devices. When abnormal conditions occur in the battery, such as overcharging or over-discharging, the system will also send alarm information to the user via the 4G module, reminding the user to take timely action to avoid battery damage. Furthermore, this invention features a location-based anti-loss function, effectively preventing the loss of the lithium battery module and ensuring asset security. Especially in areas without wired networks, the system can update the program in the background to optimize battery management strategies in a timely manner, further reducing maintenance costs. The remote monitoring function also significantly reduces the frequency of on-site inspections by maintenance personnel, lowering maintenance costs while improving the timeliness of fault handling.

[0020] 5. Stability and accuracy of signal transmission. This utility model features a separate installation design where the 4G module is installed inside the heat dissipation front cover and the antenna is installed on the side of the heat dissipation front cover. Through spatial isolation, utilizing the shielding effect of the heat dissipation front cover, reducing line coupling, and reducing mutual modulation interference, the EMC interference between the 4G module and the antenna is effectively reduced. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the appearance of the 4G communication outdoor backup lithium battery according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the 4G communication outdoor backup lithium battery according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the lithium battery module in an embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the heat dissipation front cover and BHC module in an embodiment of this utility model.

[0025] Figure 5 This is a schematic diagram of the antenna structure in an embodiment of this utility model.

[0026] Figure 6 This is a schematic diagram of the connection structure between the antenna and the 4G module in an embodiment of this utility model.

[0027] In the diagram: 1—Front heat dissipation cover, 2—Cylinder body, 3—Rear cover, 4—Lithium battery module, 6—4G module, 11—BAT1 power connection port, 12—BAT2 power connection port, 13—Communication interface, 14—Button, 15—Ventilation valve, 16—Indicator light, 17—Front cover fixing hole, 18—Handle, 21—Cylinder body connection hole, 31—Rear cover mounting hole, 32—Rear cover traction ring, 41—Pressure plate, 42—Insulating bracket, 43—Battery cell, 44—Epoxy board, 45—Side plate, 46—Plastic steel strip, 47—Aluminum busbar, 51—PCBA board, 52—Radiator, 53—Mylar sheet, 54—Thermal conductive pad, 61—Antenna, 611—External threaded post, 612—Sealing ring, 613—Hexagonal nut. Detailed Implementation

[0028] To describe the present invention in more detail, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1-4As shown, this embodiment provides a 4G communication outdoor backup lithium battery, including a heat dissipation front cover 1, a cylindrical body 2, a rear cover 3, a lithium battery module 4, a BHC module, and a 4G module 6. The lithium battery module 4, the 4G module 6, and the BHC module are installed in a housing composed of the heat dissipation front cover 1, the cylindrical body 2, and the rear cover 3. The heat dissipation front cover 1 is equipped with an indicator light 16 and a handle 18, and has a BAT1 power connection port 11, a BAT2 power connection port 12, a communication interface 13, a button 14, and a vent valve 15 on its side. An antenna 61 is located on the other side, evenly distributed side by side, all with a waterproof design. The heat dissipation front cover 1, the rear cover 3, and the cylindrical body 2 are designed as separate units. The integrated design of the heat dissipation front cover 1 and the BHC module effectively protects the lithium battery module from corrosion during disassembly and assembly. The cylindrical body 2 and the rear cover 3 can also be disassembled, saving manpower and assembly time during the disassembly and assembly process. The lithium battery module 4 is also connected to the battery temperature and battery sampling interface of the BHC module to perform battery voltage detection, temperature detection, current detection and protection, and can set alarm and protection parameters through the host computer.

[0030] In this embodiment, the heat dissipation front cover 1 is manufactured using a die-cast aluminum process and is connected to the cylinder body 2 through fixing holes 17. The dense die-cast structure has shielding effectiveness, effectively reducing the mutual interference between the 4G module 6 and the antenna 61. The handle 18 is integrally die-cast with the heat dissipation front cover 1, eliminating the assembly interface between the handle 18 and the heat dissipation front cover 1, thereby upgrading the IP protection level from the separate IP54 to IP65, improving portability, safety, and aesthetics.

[0031] like Figure 3 As shown, the lithium battery module 4 includes multiple battery cells 43, and in this embodiment, multiple 100Ah battery cells are used. The lithium battery module 4 uses aluminum busbars 47 as connecting busbars to connect the positive and negative electrodes of each battery cell 43 in series, forming a stable electrical connection. The battery cells are then fixed around the perimeter using plastic steel straps 46. The battery cells 43 are arranged in a front-to-back layout and are wrapped around the perimeter with epoxy boards 44 for insulation protection. Insulating brackets 42 are installed at both ends of the lithium battery module 4 for fixation and insulation; the narrower sides of the battery cells 43 are reinforced and protected by side plates 45. Finally, both ends of the lithium battery module 4 are fixed by four pressure plates 41 at the front and rear. The pressure plates 41 are fitted with connecting holes 21 inside the cylinder 2 to ensure the stability and reliability of the lithium battery module 4 within the cylinder 2.

[0032] like Figure 4As shown, in this embodiment, the BHC module is installed between the lithium battery module 4 and the heat dissipation front cover 1. Since the BHC module has more power devices than a traditional BMS (Battery Management System) board, it generates more heat and has higher heat dissipation requirements, necessitating a focus on heat dissipation design. The surface of the heat dissipation front cover 1 is designed with heat dissipation fins to enhance the heat dissipation performance of the enclosure, improve airflow, and ensure uniform heat dissipation. The BHC module has positioning holes along its edge that connect to the internal screw posts of the heat dissipation front cover 1. The internal screw posts of the heat dissipation front cover 1 have screw holes that are fixedly connected to the BHC module by screws. The positioning holes and screw holes 17 are correspondingly arranged and evenly distributed.

[0033] like Figure 4 As shown, in this embodiment, the BHC module includes a PCBA board 51, a Mylar sheet 53, and a heat sink 52. The heat sink 52 is fixed to the PCBA board 51 with connectors to provide heat dissipation for the critical power MOSFETs. The Mylar sheet is fixed to the back of the PCBA board 51 with rivets, which also serve as insulation. A thermally conductive pad 54 is used at the contact point between the BHC module and the heat sink cover 1 to conduct heat from the power devices on the PCBA board 51 outwards. The BHC module's heat sink 52 is positioned in contact with the thermally conductive pad 54. The heat sink cover 1 uses natural heat dissipation, which is less costly than traditional air-cooled structures. The 4G module 6 is connected to the BHC module via a wiring harness for uploading battery information to the backend for convenient management and monitoring. A vent valve 15 is installed on the heat sink cover 1 to balance the air pressure inside the enclosure with the external environment and prevent liquid and dust from entering, thereby achieving an IP65 waterproof and dustproof rating.

[0034] like Figure 4 As shown, in this embodiment, the inner side of the heat dissipation front cover 1 is integrally formed by die casting and a mounting base is provided. The 4G module 6 is provided with positioning holes along its edge and is positioned and connected to the mounting base. The mounting base is provided with screw holes and is fixedly connected to the 4G module 6 by screws. The positioning holes and screw holes are correspondingly set and evenly distributed.

[0035] like Figure 1 As shown, in this embodiment, the rear cover 3 is provided with a rear cover traction ring 32 for mounting and fixing the battery box to the outdoor device. Figure 2 As shown, the rear cover 3 has a groove along its edge for embedding a sealing strip. When the rear cover 3 and the body 2 are sealed together through the mounting hole 31, the sealing strip is compressed, forming a tight sealing interface. Similarly, the heat dissipation front cover 1 also has a groove along its edge for embedding a sealing strip, so that it is compressed when connected to the body. This double sealing strip design achieves a tight fit by compressing the sealing strip, effectively preventing the intrusion of external substances such as moisture and dust. This allows the overall structure of the battery pack to achieve an IP65 level of waterproof and dustproof performance, ensuring the reliability and durability of the battery pack in complex outdoor environments.

[0036] like Figure 5As shown, in this embodiment, the feed section of the antenna 61 extends to form an externally threaded post 611. A sealing ring 612 made of elastic material such as rubber is tightly fitted at the root of the externally threaded post 611, with its inner diameter slightly smaller than the outer diameter of the root. The upper side of the heat dissipation front cover 1 has a suitable mounting hole. When the externally threaded post 611 is screwed in, the sealing ring 612 is compressed and expands radially, tightly fitting against the inner wall of the mounting hole to form an interference seal. Testing shows it meets the IP65 waterproof and dustproof standard, suitable for various complex environments. After the externally threaded post 611 passes through the mounting hole, a hexagonal nut 613 is screwed in. Tightening prevents the antenna 61 from loosening due to vibration or other factors, ensuring stable equipment operation and reliable signal transmission.

[0037] like Figure 4 As shown, in this embodiment, the 4G module 6 and the BHC module are connected by a wiring harness to acquire battery data in real time and upload it to the cloud. This supports remote monitoring, abnormal alarms, and firmware upgrades, ensuring stable operation in outdoor environments.

[0038] like Figure 6 As shown, in this embodiment, the 4G module 6 and the antenna 61 are connected by a wire harness and adopt a separate installation layout to optimize signal reception, facilitate equipment layout and design, and improve equipment stability and reliability.

[0039] like Figure 4 As shown, in this embodiment, the Mylar sheet 53 is fixed to the back of the BHC module with rivets to provide insulation. The heat of the BHC module is conducted upwards from bottom to top and discharged through the heat dissipation front cover 1. The heat dissipation front cover 1 is made of die-cast aluminum, which has a good heat dissipation effect.

[0040] The above description of the embodiments is provided to enable those skilled in the art to understand and apply the present invention. Those skilled in the art can readily make various modifications to the above embodiments and apply the general principles described herein to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made to the present invention by those skilled in the art based on the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A 4G communication outdoor standby lithium battery, characterized in that, The system includes a housing, a lithium battery module, a BHC module, and a 4G module, all of which are installed and fixed within the housing. The BHC module is connected to the lithium battery module and is used to convert the output voltage or external input voltage of the lithium battery module and monitor the operating status of the lithium battery module. The 4G module is connected to the BHC module and is used to wirelessly transmit relevant electrical information of the BHC module and the lithium battery module to a host computer, so that the host computer can remotely monitor the overall operation of the lithium battery.

2. The 4G communication outdoor standby lithium battery according to claim 1, characterized in that: The enclosure consists of a heat dissipation front cover, a cylindrical body, and a rear cover. Both the heat dissipation front cover and the rear cover are detachable and are respectively installed and fixed on the front and rear sides of the cylindrical body. The heat dissipation front cover is made of aluminum alloy panel, with an antenna on the upper side, a communication interface, a power connection port, a vent valve, and a button on the lower side, and an indicator light and a handle on the outer side. The BHC module and the 4G module are both installed on the inner side of the heat dissipation front cover.

3. The 4G communication outdoor standby lithium battery according to claim 2, characterized in that: The upper side of the heat dissipation front cover is also provided with a handle for carrying. The cylinder body is connected to the heat dissipation front cover and rear cover respectively through connectors and sealed with sealing strips. In the installed state, both sealing strips are in a compressed state to achieve the sealing of the box structure and achieve IP65 waterproof and dustproof effect.

4. The 4G communication outdoor backup lithium battery according to claim 2, characterized in that: The 4G module is fixed to the mounting base inside the heat dissipation front cover with screws, and the 4G module is connected to the antenna via a connecting cable.

5. The 4G communication outdoor standby lithium battery according to claim 2, characterized in that: The antenna's feed section extends to form an external threaded post, and a sealing ring is fitted onto the root of the external threaded post. The upper side of the heat dissipation front cover has a mounting hole that mates with the external threaded post. When the external threaded post is screwed into the mounting hole, the sealing ring is compressed and expands radially, forming an interference seal against the inner wall of the mounting hole, thereby achieving an IP65 waterproof and dustproof effect. After the external threaded post passes through the mounting hole, a hexagonal nut is screwed in to secure it and prevent loosening.

6. The 4G communication outdoor backup lithium battery according to claim 2, characterized in that: The vent valve is fixed to the lower side of the heat dissipation front cover to balance the air pressure inside and outside the box and prevent liquid and dust from entering the box.

7. The 4G communication outdoor backup lithium battery according to claim 2, characterized in that: The lithium battery module includes multiple cells arranged in a front-to-back layout, connected in series by aluminum busbars. The lithium battery module is wrapped with epoxy board for insulation protection and then fixed with plastic steel straps. The narrow sides of the lithium battery module are reinforced and protected with side plates. Insulating brackets are installed at both ends of the lithium battery module for fixing and insulation. It is then fixed by eight pressure plates (top, bottom, front, and back). The pressure plates are installed in conjunction with the connection holes inside the cylinder to ensure the stability and reliability of the lithium battery module inside the cylinder.

8. The 4G communication outdoor backup lithium battery according to claim 1, characterized in that: The BHC module adopts a lithium battery management system with intelligent bidirectional DC-DC conversion function, which has charge and discharge control function, voltage, current and temperature detection and protection function, short circuit protection function, SOC calculation function and charging equalization function.

9. The 4G communication outdoor backup lithium battery according to claim 1, characterized in that: The BHC module includes a PCBA board, Mylar plates, and a heat sink. The heat sink is fixed to the PCBA board with connectors to provide heat dissipation for the power MOSFETs on the PCBA board. The Mylar plates are fixed to the back of the PCBA board with rivets and have an insulating function.

10. The 4G communication outdoor backup lithium battery according to claim 9, characterized in that: The components on the PCBA board are attached to the inner side of the heat dissipation front cover via thermally conductive silicone pads, which are used to dissipate the heat from the components on the PCBA board to the outside through the heat dissipation front cover; the BHC module is installed between the lithium battery module and the heat dissipation front cover, so that the heat from the lithium battery is transferred from the lithium battery module to the BHC module, and then dissipated through the heat dissipation front cover.

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