Modular, multi-functional integrated lithium battery structure

Abstract

This utility model relates to a modular, multifunctional integrated lithium battery structure, wherein the lithium battery structure includes: a lithium battery module, which internally uses aluminum end plates and high-strength steel strips to constrain and set up a lithium iron phosphate battery pack for providing power support; a BMS system, whose battery negative terminal is connected to the negative terminal of the lithium battery module for monitoring the working status of the lithium battery module and controlling the charging and discharging of the lithium battery module based on the acquired SOC / SOH parameters; a 4G & GPS communication module, which is connected to the BMS system through a communication interface for acquiring the GPS positioning information of the lithium battery structure and periodically uploading the acquired battery management data to a cloud server; an emergency connector, which is set between the lithium battery module and the BMS system for manually switching the working line without tools and quickly connecting to a backup power source in the event of a BMS system failure; and the entire lithium battery structure adopts an all-steel structural frame.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery systems, and more particularly to the field of commercial vehicle start-stop batteries, specifically referring to a modular, multi-functional integrated lithium battery structure. Background Technology

[0002] In recent years, with the slowdown in transportation demand, commercial vehicles powered by diesel and natural gas are facing increasingly longer waiting times for goods, leading to parking application scenarios, primarily based on parking air conditioning. Under these scenarios requiring frequent deep discharges, the lifespan of traditional lead-acid batteries has decreased from 2-3 years to about 1 year. Frequent deep discharges also cause a significant reduction in starting capability, forcing drivers and fleets to face high annual costs for lead-acid battery replacements and emergency roadside assistance, presenting the following practical problems:

[0003] 1. The inability to manually provide emergency power when the BMS fails will cause the vehicle to become paralyzed;

[0004] 2. Battery performance drops sharply in low-temperature environments, and there is a lack of efficient energy utilization heating solutions;

[0005] 3. The communication module has poor anti-interference capabilities, resulting in unstable positioning and data uploading;

[0006] 4. The structural design does not take into account both the battery expansion force and the external mechanical impact.

[0007] Therefore, how to effectively address issues such as emergency power supply during BMS failures, low-temperature performance degradation, communication stability, and structural reliability are key considerations. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a modular, multifunctional integrated lithium battery structure.

[0009] To achieve the above objectives, the present invention provides a modular, multifunctional integrated lithium battery structure as follows:

[0010] The main feature of this modular, multifunctional integrated lithium battery structure is that the lithium battery structure includes:

[0011] The lithium battery module contains a lithium iron phosphate battery pack, which is constrained by aluminum end plates and high-strength steel strips to provide power support.

[0012] The BMS system connects the negative terminal of the battery to the negative terminal of the lithium battery module to monitor the working status of the lithium battery module and control the charging and discharging of the lithium battery module based on the obtained SOC / SOH parameters.

[0013] The 4G & GPS communication module is connected to the BMS system through a communication interface to obtain the GPS positioning information of the lithium battery structure and periodically upload the obtained battery management data to the cloud server.

[0014] An emergency connector is installed between the lithium battery module and the BMS system to quickly connect to a backup power source by manually switching the working circuit without tools in the event of a failure of the BMS system.

[0015] Furthermore, the lithium battery structure is constructed entirely of steel frame.

[0016] Preferably, the lithium battery module is further provided with a heating module, which is connected to the heating control output interface of the BMS system to monitor the temperature of the lithium iron phosphate battery pack and the BMS system, and to control the heating film to be heated and turned on by a relay.

[0017] Preferably, the heating film is attached to the side of the lithium battery module.

[0018] Preferably, the 4G & GPS communication module is used to obtain the latitude and longitude of the lithium iron phosphate battery pack and the vehicle's operating speed information for real-time positioning, and to upload the obtained voltage, current, temperature, and SOC parameter information to the cloud server for remote monitoring.

[0019] Preferably, the emergency connector uses quick-connect copper alloy contacts with an insulating protective cover.

[0020] Preferably, the lithium battery structure further includes a supercapacitor module, one end of which is connected to the positive terminal of the lithium iron phosphate battery pack, and the other end is connected to the negative electrode of the discharge port of the BMS system. The supercapacitor module has a self-balancing circuit and a high-frequency filter capacitor.

[0021] Preferably, the lithium battery structure is further provided with a total negative connector and a total positive connector, and both the total negative connector and the total positive connector are connected to the supercapacitor module.

[0022] Preferably, the inner layer of the all-steel structural frame is an anti-expansion mesh, and the outer layer is a stamped steel plate.

[0023] This utility model utilizes a modular, multi-functional, integrated lithium battery structure. Through a high-energy-density lithium-ion battery module, intelligent thermal management architecture, and integrated BMS design, it solves the problems of low energy efficiency and short lifespan associated with lead-acid batteries in commercial vehicle applications. Furthermore, it provides emergency power supply in case of BMS failure via an emergency connector, enhances adaptability to extreme environments by incorporating a heating module and supercapacitor, and employs an all-steel frame structure to ensure mechanical strength, making it more suitable for high-reliability scenarios such as commercial vehicles. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the connection relationship of the modular, multifunctional integrated lithium battery structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the lithium battery module of the modular, multifunctional integrated lithium battery structure of this utility model.

[0026] Figure 3 This is a schematic diagram of the overall appearance of the modular, multifunctional integrated lithium battery structure of this utility model.

[0027] Figure 4 This is a schematic diagram showing the internal details of the modular, multifunctional integrated lithium battery structure of this utility model.

[0028] Figure Labels

[0029] 1 lithium battery module

[0030] 2BMS system

[0031] 3 heating modules

[0032] 4 4G & GPS communication module

[0033] 5 Supercapacitor Modules

[0034] 6 emergency connectors Detailed Implementation

[0035] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0036] Before describing the embodiments according to the present invention in detail, it should be noted that, in the following, the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] In the technical solution of the modular multifunctional integrated lithium battery structure of this utility model, the main protection is the hardware structure and connection relationship of the overall hardware functional platform that supports the realization of the corresponding functions. Moreover, each functional module and module unit included therein can correspond to the specific hardware circuit in the actual known hardware device or integrated circuit structure. Therefore, it only involves the improvement of the specific hardware topology connection structure and the specific hardware circuit. The improvement of the hardware part exists and does not rely solely on computer control software. It is not merely a carrier for executing control software or computer programs. Therefore, solving the corresponding technical problem and obtaining the corresponding technical effect does not involve the application of any control software or computer programs. In other words, this utility model can solve the technical problem and obtain the corresponding technical effect simply by utilizing the improvements in the actual known hardware device or hardware circuit structure involved in these modules and units, without the need for specific control software or computer programs to achieve the corresponding functions.

[0038] Please see Figure 1 As shown, this utility model discloses a modular, multi-functional integrated lithium battery structure, which includes a lithium battery module, a BMS system, a 4G & GPS communication module, a heating module, a supercapacitor module, an emergency connector, and an all-steel frame. The functions of each feature will be described in further detail below:

[0039] Lithium battery module: It uses high-capacity, long-life, and high-performance lithium iron phosphate batteries. It integrates 4-8 lithium batteries using aluminum end plates and high-strength steel strips for constraint. It can fully withstand the expansion force of lithium batteries after more than 5 years of long-term charging and discharging, ensuring the long-term reliability of the structure.

[0040] BMS system: It has five major lithium battery protection functions: overvoltage protection, undervoltage protection, overcurrent protection, overtemperature protection, and short circuit protection; it also has SOC / SOH estimation and charge / discharge switch control functions.

[0041] 4G & GPS Communication Module: Through the integrated 4G & GPS antenna and communication module, the GPS positioning information (latitude, longitude and speed) of the lithium battery system is acquired. At the same time, the battery management data (voltage, current, temperature, SOC) is aggregated and periodically sent to the cloud server.

[0042] Heating module: This module has the function of monitoring the temperature of lithium battery and BMS, and also has the function of controlling the heating relay to conduct the heating film, so as to automatically convert the external charging energy into heating energy at low temperature, ensuring that the lithium battery always operates at the operating temperature that does not affect its lifespan.

[0043] Supercapacitor Module: This module has a complete self-balancing circuit and high-frequency filter capacitor. While assisting in starting, it also absorbs load dump and interference signals, ensuring the safe use of other vehicle electrical appliances and circuits.

[0044] Emergency Connector: This connector is used in emergency scenarios when the BMS fails. It enables quick manual switching of the circuit without additional tools, ensuring that the vehicle can drive back to the base or repair shop, saving drivers and fleets expensive emergency rescue costs.

[0045] All-steel frame structure: Except for the internal lithium battery module, the rest of the frame is made of steel, forming a double-layered reinforced structure. This structure not only resists battery expansion internally and compression deformation externally, but also has strong resistance to vibration and impact, ensuring long-term driving safety.

[0046] In a preferred embodiment of this utility model, the emergency connector may use quick-connect copper alloy contacts with an insulating protective cover; the heating film is attached to the side of the battery module with a heating efficiency of >85%; the supercapacitor module is connected in parallel with the lithium battery with a response time of <10ms.

[0047] In one specific embodiment of this utility model, an electric commercial vehicle is taken as an example:

[0048] 1. The lithium battery module is fixed by steel strip pre-tensioning force, and the expansion gap is ≤0.5mm;

[0049] 2. When the BMS system triggers over-temperature protection, it simultaneously shuts down charging and starts the heating module;

[0050] 3. After the emergency connector is manually switched, the BMS system directly supplies power to the motor controller in the event of a bypass fault;

[0051] 4. The supercapacitor module provides an instantaneous 500A current when the engine starts.

[0052] Compared with existing technical solutions, this technical solution has the following design advantages:

[0053] (1) Tool-free operation design of emergency connectors (compared to traditional fuses which require replacement);

[0054] (2) Charging energy reuse heating technology (compared to the energy consumption of independent PTC heaters);

[0055] (3) Synergistic transient response of supercapacitors and lithium batteries;

[0056] (4) Mechanical optimization design of double-layer steel frame.

[0057] This utility model utilizes a modular, multi-functional, integrated lithium battery structure. Through a high-energy-density lithium-ion battery module, intelligent thermal management architecture, and integrated BMS design, it solves the problems of low energy efficiency and short lifespan associated with lead-acid batteries in commercial vehicle applications. Furthermore, it provides emergency power supply in case of BMS failure via an emergency connector, enhances adaptability to extreme environments by incorporating a heating module and supercapacitor, and employs an all-steel frame structure to ensure mechanical strength, making it more suitable for high-reliability scenarios such as commercial vehicles.

[0058] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A modular multi-integrated lithium battery structure, characterized by, The lithium battery structure includes: The lithium battery module contains a lithium iron phosphate battery pack, which is constrained by aluminum end plates and high-strength steel strips to provide power support. The BMS system connects the negative terminal of the battery to the negative terminal of the lithium battery module to monitor the working status of the lithium battery module and control the charging and discharging switch of the lithium battery module based on the obtained SOC / SOH parameters. The 4G & GPS communication module is connected to the BMS system through a communication interface to obtain the GPS positioning information of the lithium battery structure and periodically upload the obtained battery management data to the cloud server. An emergency connector is installed between the lithium battery module and the BMS system to quickly connect to a backup power source by manually switching the working circuit without tools in the event of a failure of the BMS system. Furthermore, the lithium battery structure is constructed entirely of steel frame.

2. The modular multi-integrated lithium battery structure of claim 1, wherein, The lithium battery module is also equipped with a heating module, which is connected to the heating control output interface of the BMS system. The heating module is used to monitor the temperature of the lithium iron phosphate battery pack and the BMS system, and to control the heating relay to heat and activate the heating film.

3. The modular multi-integrated lithium battery structure of claim 2, wherein, The heating film is attached to the side of the lithium battery module.

4. The modular multi-integrated lithium battery structure of claim 1, wherein, The 4G & GPS communication module is used to obtain the latitude and longitude of the lithium iron phosphate battery pack and the vehicle's operating speed information for real-time positioning, and to upload the obtained voltage, current, temperature, and SOC parameter information to the cloud server for remote monitoring.

5. The modular multi-integrated lithium battery structure of claim 1, wherein, The emergency connector uses quick-connect copper alloy contacts and has an insulating protective cover.

6. The modular multi-integrated lithium battery structure of claim 1, wherein, The lithium battery structure also includes a supercapacitor module. One end of the supercapacitor module is connected to the positive terminal of the lithium iron phosphate battery pack, and the other end is connected to the negative electrode of the discharge port of the BMS system. The supercapacitor module has a self-balancing circuit and a high-frequency filter capacitor.

7. The modular multi-integrated lithium battery structure of claim 6, wherein, The lithium battery structure also includes a main negative connector and a main positive connector, both of which are connected to the supercapacitor module.

8. The modular, multi-functional integrated lithium battery structure of any one of claims 1 to 7, wherein, The inner layer of the all-steel frame is an anti-expansion mesh, and the outer layer is a stamped steel plate.

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