A 24v lithium iron phosphate controller
Patent Information
- Application Number
- CN202521326168.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-06-26
AI Technical Summary
[0003]然而，现在市场上的磷酸铁锂动力电池控制器控制功能单一，控制电流不超过2000A，应用在大型货车时可能会导致车辆不能启动或损坏；温度传感器参数较少，不能有效保护电芯及控制器，导致电芯寿命减少或控制器损坏；加热功率较小，没有加热电流检测，在极寒地区不能快速安全加热；没有多路通讯接口，不能适配各种车辆的通信要求，不能远程监控电池状态
本实用新型通过将8节磷酸铁锂电芯串联构成24V磷酸铁锂动力电池，可替换普通24V铅酸蓄电池，相同的电芯容量，磷酸铁锂电池体积小，重量轻，放电电流大，寿命长，综合成本降低，温度传感器检测装置进行多项数据监测，监测保护功能齐全使用更安全，电压均衡装置和电流采集模块进行电压电流的监测，方便及时控制电压电流，工作方式多样，参数调整灵活，提高电池使用效率，智能的加热装置对电芯加热，使电芯在极寒条件下性能突出，通过设置4G通信定位模块、蓝牙通信模块和CAN通信模块，多种通信方式满足用户及车辆控制需求，电池数据可远程监控，让用户更方便的监控当前电池的使用情况。
Smart Images
Figure CN224745724U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of controller technology, specifically relating to a 24V lithium iron phosphate controller. Background Technology
[0002] Currently, large and medium-sized trucks generally use 24V lead-acid batteries as their power starting batteries. However, lead-acid batteries have low energy density, short lifespan, and high overall operating costs. With the development of energy technology, 24V lithium iron phosphate power batteries have high energy density, more charge-discharge cycles, and longer lifespan, which can significantly reduce overall operating costs.
[0003] However, current lithium iron phosphate power battery controllers on the market have limited control functions, with a control current not exceeding 2000A. When used in large trucks, this may cause the vehicle to fail to start or be damaged. They also have limited temperature sensor parameters, which cannot effectively protect the battery cells and controllers, leading to reduced battery cell life or controller damage. Furthermore, they have low heating power and lack heating current detection, making it impossible to heat quickly and safely in extremely cold regions. They also lack multi-channel communication interfaces, making them unsuitable for the communication requirements of various vehicles and unable to remotely monitor battery status. Utility Model Content
[0004] To address the problems mentioned in the background section, this invention provides a 24V lithium iron phosphate controller, which features small size, light weight, large discharge current, long lifespan, and low overall cost.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a 24V lithium iron phosphate controller, comprising a voltage equalization device, a temperature sensor detection device, a current acquisition module, a power MOS switch device, a heating control device, and a main control device. The main control device is electrically connected to the voltage equalization device, the temperature sensor detection device, the current acquisition module, the power MOS switch device, and the heating control device, respectively. The power MOS switch device is connected to the current acquisition module, which is also electrically connected to a series-connected lithium iron phosphate battery cell. The voltage equalization device is electrically connected to the series-connected lithium iron phosphate battery cell, and a farad compensation capacitor is connected to the positive terminal of the series-connected lithium iron phosphate battery cell and the power MOS switch device.
[0006] Preferably, the voltage equalization device includes a voltage acquisition terminal, a voltage acquisition module, a voltage signal processing module, and a voltage equalization module, with the voltage acquisition terminal connected to a series-connected lithium iron phosphate battery cell.
[0007] Preferably, the temperature sensor detection device includes a cell temperature sensor, a terminal temperature sensor, a heating temperature sensor, a power control MOS temperature sensor, a heating control MOS temperature sensor, a motherboard temperature sensor, and a temperature signal processing module.
[0008] Preferably, the current acquisition module includes a sampling resistor and a current signal amplification module.
[0009] Preferably, the power MOS switching device includes a negative power MOS and a power MOS driving module.
[0010] Preferably, the heating control device includes a heating coil, a heating control module, a drive module, and a heating current detector.
[0011] Preferably, the main control device includes a 32-bit MCU main control module, a 4G communication positioning module, a Bluetooth communication module, a CAN communication module, a clock module, an LED status indicator, an alarm buzzer, and a start button.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes eight lithium iron phosphate cells connected in series to form a 24V lithium iron phosphate power battery, which can replace ordinary 24V lead-acid batteries. With the same cell capacity, lithium iron phosphate batteries are smaller, lighter, have a larger discharge current, longer lifespan, and lower overall costs. A temperature sensor monitors multiple data points, providing comprehensive monitoring and protection functions for enhanced safety. A voltage equalization device and current acquisition module monitor voltage and current for convenient and timely control. The battery offers diverse operating modes and flexible parameter adjustments, improving battery efficiency. An intelligent heating device heats the cells, enhancing performance even in extremely cold conditions. Multiple communication methods, including 4G positioning, Bluetooth, and CAN modules, meet the needs of users and vehicle control. Battery data can be remotely monitored, allowing users to easily monitor the current battery status. Attached Figure Description
[0013] Figure 1 This is a block diagram of the circuit control structure of this utility model; Figure 2 This is a block diagram of the circuit connection structure of this utility model; Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-2This utility model provides the following technical solution: a 24V lithium iron phosphate controller, including a voltage equalization device, a temperature sensor detection device, a current acquisition module, a power MOS switch device, a heating control device, and a main control device. The main control device is electrically connected to the voltage equalization device, the temperature sensor detection device, the current acquisition module, the power MOS switch device, and the heating control device. The power MOS switch device is connected to the current acquisition module. The current acquisition module is also electrically connected to eight series-connected lithium iron phosphate battery cells. The voltage equalization device is electrically connected to the eight series-connected lithium iron phosphate battery cells. A farad compensation capacitor is connected to the positive terminal of the eight series-connected lithium iron phosphate battery cells and the power MOS switch device.
[0016] Specifically, the voltage equalization device includes a voltage acquisition terminal, a voltage acquisition module, a voltage signal processing module, and a voltage equalization module. The voltage acquisition terminal is connected to eight series-connected lithium iron phosphate cells.
[0017] By adopting the above technical solution, it is convenient to collect voltage data and perform timely data processing and adjustment.
[0018] Specifically, the temperature sensor detection device includes two cell temperature sensors, two electrode temperature sensors, two heating temperature sensors, one power control MOS temperature sensor, one heating control MOS temperature sensor, one motherboard temperature sensor, and a temperature signal processing module.
[0019] By adopting the above technical solution, it is convenient to monitor multiple temperature data, and the monitoring and protection functions are complete, making it safer to use.
[0020] Specifically, the current acquisition module includes a sampling resistor and a current signal amplification module.
[0021] By adopting the above technical solution, it is convenient to collect current and make timely adjustments.
[0022] Specifically, the power MOS switching device includes a negative-terminal power MOS and a power MOS driver module.
[0023] By adopting the above technical solution, the negative terminal power MOS and the power MOS drive module are respectively connected to the current acquisition device and the output negative terminal, which facilitates power adjustment.
[0024] Specifically, the heating control device includes a heating coil, a heating control module, a drive module, and a heating current detector.
[0025] By adopting the above technical solution, the heating coil heats the lithium iron phosphate battery cell, which exhibits outstanding performance under extremely cold conditions. The heating control module, drive module, and heating current detection facilitate temperature detection, and then the heating coil is activated to control the heating temperature and ensure stable heating.
[0026] Specifically, the main control unit includes a 32-bit MCU main control module, a 4G communication positioning module, a Bluetooth communication module, a CAN communication module, a clock module, LED status indicators, an alarm buzzer, and a start button.
[0027] By adopting the above technical solution, the 32-bit MCU main control module controls the device, the 4G communication positioning module, Bluetooth communication module and CAN communication module meet the user and vehicle control needs, the clock module displays the time, the LED status indicator and alarm buzzer provide alarm reminders, and the start button facilitates starting and stopping.
[0028] The working principle and usage process of this utility model are as follows: When in use, one end of the heating coil is connected to the positive terminal of eight series-connected lithium iron phosphate (LFP) battery cells, and the other end is connected to a heating control MOS switch. A farad compensation capacitor is connected to the positive terminal of the eight series-connected LFP battery cells and the power control MOS switch. The eight LFP battery cells connected in series constitute a 24V LFP power battery, which can replace ordinary 24V lead-acid batteries. For the same cell capacity, LFP batteries are smaller, lighter, have a larger discharge current, longer lifespan, and lower overall costs. A temperature sensor detection device monitors multiple data points, providing comprehensive monitoring and protection functions for safer use. A voltage equalization device and current acquisition module monitor voltage and current for convenient and timely control. The device offers diverse operating modes and flexible parameter adjustments, improving battery efficiency. An intelligent heating device heats the battery cells, enabling them to perform exceptionally well in extremely cold conditions. Multiple communication methods, including 4G positioning, Bluetooth, and CAN modules, meet the needs of users and vehicle control. Battery data can be remotely monitored, allowing users to easily monitor the current battery status.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A 24V lithium iron phosphate controller comprising a voltage equalization device, a temperature sensor detection device, a current acquisition module, a power MOS switch device, a heating control device and a master control device, characterized in that: The main control device is electrically connected to the voltage equalization device, the temperature sensor detection device, the current acquisition module, the power MOS switch device, and the heating control device. The power MOS switch device is connected to the current acquisition module, which is also electrically connected to the series-connected lithium iron phosphate battery cell. The voltage equalization device is electrically connected to the series-connected lithium iron phosphate battery cell. The farad compensation capacitor is connected to the positive terminal of the series-connected lithium iron phosphate battery cell and the power MOS switch device.
2. The 24V LiFePO4 controller according to claim 1, characterized in that: The voltage equalization device includes a voltage acquisition terminal, a voltage acquisition module, a voltage signal processing module, and a voltage equalization module. The voltage acquisition terminal is connected to a series-connected lithium iron phosphate battery cell.
3. A 24V lithium iron phosphate controller according to claim 1, characterized in that: The temperature sensor detection device includes a cell temperature sensor, a terminal temperature sensor, a heating temperature sensor, a power control MOS temperature sensor, a heating control MOS temperature sensor, a motherboard temperature sensor, and a temperature signal processing module.
4. A 24V lithium iron phosphate controller according to claim 1, characterized in that: The current acquisition module includes a sampling resistor and a current signal amplification module.
5. The 24V LiFePO4 controller of claim 1, wherein: The power MOS switching device includes a negative-terminal power MOS and a power MOS driving module.
6. The 24V LiFePO4 controller of claim 1, wherein: The heating control device includes a heating coil, a heating control module, a drive module, and a heating current detector.
7. The 24V LiFePO4 controller of claim 1, wherein: The main control device includes a 32-bit MCU main control module, a 4G communication positioning module, a Bluetooth communication module, a CAN communication module, a clock module, an LED status indicator, an alarm buzzer, and a start button.