Improved secondary architecture marine battery management system

Abstract

The utility model discloses an improved secondary architecture marine battery management system, which comprises a primary host connected with external equipment through CAN (controller area network) communication, a secondary voltage transfer host and a secondary temperature transfer host, the secondary voltage transfer host and the secondary temperature transfer host are connected with the primary host, and the secondary voltage transfer host is respectively connected with a group of voltage slaves. The secondary temperature transfer host is respectively connected with a group of temperature sensing slaves, each battery unit is respectively and sequentially connected with a voltage slave and a temperature sensing slave, and different battery units cannot be connected with the same voltage slave and the same temperature sensing slave. The battery management system not only can correspond to the increase of the number of batteries, but also can improve the management efficiency, reduce the communication pressure between the host and the slave directly, and ensure that the system can operate stably and efficiently.

Description

Technical Field

[0001] This utility model relates to battery management technology, specifically an improved two-level architecture marine battery management system. Background Technology

[0002] The rapid development of battery, electronic, communication, and control technologies has provided strong technical support for the research and application of marine battery management systems. In particular, the widespread application of new energy sources and the gradual electrification of marine power systems have placed higher demands on marine battery management systems due to the complex working environment, numerous loads, large voltage fluctuations, and unpredictable sea conditions such as wind, waves, and currents. These systems not only need to monitor the battery pack's status information in real time and transmit this data to the main control module for processing, but also need to perform intelligent control of the battery pack. This exacerbates the pressure on CAN communication between modules, leading to data loss, delays, or duplicate transmissions. More seriously, it can cause the CAN communication module to crash or burn out, potentially causing permanent damage to the bus system hardware and rendering the entire battery management system inoperable. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an improved two-stage marine battery management system. This battery management system not only accommodates an increase in the number of batteries but also improves management efficiency, reduces the communication burden between the master and slave units, and ensures stable and efficient system operation.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] An improved two-level marine battery management system includes a primary master unit connected to external devices via CAN communication, and secondary voltage and temperature relay units connected to the primary master unit. Each secondary voltage relay unit is connected to a set of voltage slave units, and each secondary temperature relay unit is connected to a set of temperature-sensing slave units. Each battery cell is sequentially connected to one voltage slave unit and one temperature-sensing slave unit. Different battery cells cannot be connected to the same voltage slave unit and the same temperature-sensing slave unit. The temperature-sensing slave unit collects the current battery temperature value and reports it to its corresponding secondary temperature relay unit via CAN communication. The voltage slave units collect the battery voltage value and report it to their corresponding secondary voltage relay units via CAN communication. The main unit consists of external equipment including a power supply, charging equipment, ship-wide communication system, touchscreen, alarm system, and circuit monitoring system. The power supply serves as the core power source, providing stable and reliable electricity to the entire ship. The charging equipment provides sufficient power to the batteries, ensuring efficient and stable operation of the vessel. The ship-wide communication system receives information in real time, ensuring seamless communication throughout the ship and enabling timely and correct actions during navigation. The touchscreen is a human-machine interface that intuitively displays various battery status information and operational commands. The alarm system is responsible for responding to all alarm information at all times, issuing an alarm immediately upon detecting any abnormality. The circuit monitoring system prevents potential faults and ensures the stable operation of the power system.

[0006] The number of battery cells is the same as the number of voltage slave devices and the number of temperature slave devices, both being n, where n is a natural number and not less than 2.

[0007] The primary host main control chip uses the STM32F4 series.

[0008] The main control chips for both the secondary voltage transfer host and the secondary temperature transfer host are STM32F1 series.

[0009] Both the voltage slave and temperature slave master control chips use the STM32F1 series.

[0010] In this technical solution, the primary host is the main control unit of the system, mainly responsible for the overall management of the system, completing the collection, analysis, monitoring and scheduling of the status of each battery cluster; calculating the SOC and SOH of the battery system; diagnosing and alarming system faults; managing the system power-on / off and charging / discharging strategies; and interacting with the touch screen and controller. The secondary voltage relay host and the secondary temperature relay host serve as relay stations for data collection, responsible for storing and forwarding the voltage and temperature data collected by the slave devices, which can greatly reduce the communication pressure caused by the direct connection between the slave devices and the host, and ensure stable and efficient data transmission.

[0011] This battery management system can not only accommodate an increase in the number of batteries, but also improve management efficiency, reduce the communication pressure between the master and slave devices, and ensure that the system can operate stably and efficiently. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the battery management system in an embodiment. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this is not intended to limit the present invention.

[0014] Example:

[0015] Reference Figure 1 An improved two-level marine battery management system includes a primary master unit connected to external devices via CAN communication, and secondary voltage and temperature relay units connected to the primary master unit. Each secondary voltage relay unit is connected to a set of voltage slave units, and each secondary temperature relay unit is connected to a set of temperature-sensing slave units. Each battery cell is sequentially connected to one voltage slave unit and one temperature-sensing slave unit. Different battery cells cannot be connected to the same voltage slave unit and the same temperature-sensing slave unit. The temperature-sensing slave unit collects the current battery temperature value and reports it to its corresponding secondary temperature relay unit via CAN communication. The voltage slave unit collects the battery voltage value and reports it to its corresponding secondary temperature relay unit via CAN communication. The main unit is a power transfer unit, and its external equipment includes a power supply, charging equipment, ship-wide communication system, touch screen, alarm system, and circuit monitoring system. The power supply is the core power source, providing stable and reliable power to the entire ship. The charging equipment provides sufficient power to the batteries, ensuring the ship's efficient and stable operation. The ship-wide communication system is used to receive information in real time, ensuring the ship's information communication and enabling timely and correct operations during navigation. The touch screen is a human-machine interface device that can intuitively display various battery information statuses and operation commands. The alarm system is responsible for responding to all alarm information at all times, issuing an alarm immediately upon detecting any abnormality. The circuit monitoring system prevents potential faults and ensures the stable operation of the power system.

[0016] The number of battery cells is the same as the number of voltage slaves and the number of temperature slaves, both being n, where n is a natural number and not less than 2. In this example, n is not less than 3.

[0017] In this example, the primary host controller chip uses the STM32F4 series.

[0018] In this example, the main control chips for both the secondary voltage transfer host and the secondary temperature transfer host are STM32F1 series.

[0019] In this example, both the voltage slave and temperature slave master control chips use the STM32F1 series.

[0020] In this example, the primary host is the main control unit of the system, mainly responsible for the overall management of the system, completing the collection, analysis, monitoring and scheduling of the status of each battery cluster; calculating the SOC and SOH of the battery system; diagnosing and alarming system faults; managing the system power-on / off and charging / discharging strategies; and interacting with the touch screen and controller. The secondary voltage relay host and the secondary temperature relay host serve as relay stations for data collection, responsible for storing and forwarding the voltage and temperature data collected by the slave devices. This can greatly reduce the communication pressure caused by the direct connection between the slave devices and the host, and ensure stable and efficient data transmission.

Claims

1. An improved two-level architecture marine battery management system, characterized in that, It includes a primary master unit that connects to external devices via CAN communication, and a secondary voltage relay master unit and a secondary temperature relay master unit connected to the primary master unit. The secondary voltage relay master unit is connected to a group of voltage slave units, and the secondary temperature relay master unit is connected to a group of temperature slave units. Each battery cell is connected to one voltage slave unit and one temperature slave unit in sequence. Different battery cells cannot be connected to the same voltage slave unit and the same temperature slave unit.

2. The improved two-level marine battery management system according to claim 1, characterized in that, The number of battery cells is the same as the number of voltage slave devices and the number of temperature slave devices, both being n, where n is a natural number and not less than 2.

3. The improved two-level marine battery management system according to claim 1, characterized in that, The primary host main control chip uses the STM32F4 series.

4. The improved two-level marine battery management system according to claim 1, characterized in that, The main control chips for both the secondary voltage transfer host and the secondary temperature transfer host are STM32F1 series.

5. The improved two-level marine battery management system according to claim 1, characterized in that, Both the voltage slave and temperature slave master control chips use the STM32F1 series.

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