CN110556596A - 48V nickel-metal hydride battery management system - Google Patents

48V nickel-metal hydride battery management system Download PDF

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Publication number
CN110556596A
CN110556596A CN201910814945.XA CN201910814945A CN110556596A CN 110556596 A CN110556596 A CN 110556596A CN 201910814945 A CN201910814945 A CN 201910814945A CN 110556596 A CN110556596 A CN 110556596A
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CN
China
Prior art keywords
module
battery
acquisition module
microprocessor
nickel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910814945.XA
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Chinese (zh)
Inventor
钟发平
李磊
彭波
谭姣
马李
胡小龙
佘丹平
匡德志
徐国昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS
Original Assignee
Hunan Copower EV Battery Co Ltd
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Publication date
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Priority to CN201910814945.XA priority Critical patent/CN110556596A/en
Publication of CN110556596A publication Critical patent/CN110556596A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/24Alkaline accumulators
    • H01M10/30Nickel accumulators
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285Testing apparatus
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

the invention provides a 48V nickel-metal hydride battery management system which comprises a microprocessor, a relay driving module, a power circuit, a battery current acquisition module, a battery total voltage acquisition module, a battery module voltage acquisition module, a battery temperature acquisition module, an isolation CAN communication interface module and a data storage module, wherein the microprocessor is respectively connected with the relay driving module, the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module, the battery temperature acquisition module, the isolation CAN communication interface module and the data storage module, and the isolation CAN communication port module is connected with an associated electronic component with a CAN outside. The 48V nickel-metal hydride battery management system is simple in design, safe and reliable, and can prolong the service life of the battery.

Description

48V nickel-metal hydride battery management system
Technical Field
The invention relates to a 48V nickel-metal hydride battery management system.
background
The most widely used auxiliary storage batteries for railway vehicles are lead-acid storage batteries and nickel-cadmium alkaline batteries, wherein the nickel-cadmium storage batteries have low energy density, heavy metal pollution and serious memory effect, and the nickel-cadmium batteries have low safety and low energy density, so that under the same electric quantity requirement, the size and the weight of the nickel-cadmium batteries are large, regular maintenance is needed, and the maintenance cost is high. The nickel-metal hydride battery, as a secondary battery, has the characteristics of long service life, no pollution, relatively high energy density, wide use temperature range and the like, and is gradually applied to the field of rail transit at present. In order to apply the nickel-metal hydride battery to the field of rail transit more reasonably, safely and with long service life, the nickel-metal hydride battery needs to be provided with a management system.
Disclosure of Invention
The invention aims to provide a 48V nickel-metal hydride battery management system which is simple in design, safe and reliable and can prolong the service life of a battery.
The invention is realized by the following scheme:
A48V nickel-metal hydride battery management system comprises a microprocessor, a relay driving module, a power circuit, a battery current acquisition module, a battery total voltage acquisition module, a battery module voltage acquisition module, a battery temperature acquisition module, an isolation CAN communication interface module and a data storage module;
The microprocessor is respectively connected with the relay driving module, the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module, the battery temperature acquisition module, the isolated CAN communication interface module and the data storage module, and is used for receiving related data transmitted by the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module and the battery temperature acquisition module, processing and analyzing the related data, transmitting the processed and analyzed data to the data storage module for storage, and simultaneously controlling whether the relay driving module works or not according to the processed and analyzed data and transmitting the related data to an external associated electronic component with CAN through the isolated CAN communication port module; the related electronic components with CAN outside comprise a display screen, a whole vehicle control unit, a charger, a computer and the like; the data stored by the data storage module comprises parameters such as the current temperature of the 48V nickel-metal hydride battery, the voltage of a battery module, the total voltage, the current, the charge quantity, the available power, the fault judgment, the service life and the like;
the power supply circuit is used for converting power supply voltage provided by the 48V nickel-metal hydride battery and then providing the converted power supply voltage to the microprocessor, the relay driving module, the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module, the battery temperature acquisition module, the isolated CAN communication interface module and the data storage module;
The relay driving module is used for receiving data sent by the microprocessor and correspondingly controlling the opening and closing of a relay of the 48V nickel-hydrogen battery;
The isolated CAN communication port module is connected with an external associated electronic component with a CAN and is used for transmitting related data transmitted by the microprocessor to the external associated electronic component with the CAN;
the battery current acquisition module is connected with a Hall sensor of the 48V nickel-metal hydride battery and is used for acquiring current data of the 48V nickel-metal hydride battery, converting the acquired data and transmitting the converted data to the microprocessor;
The battery total voltage acquisition module is used for acquiring total voltage data of the 48V nickel-metal hydride battery, converting the acquired data and transmitting the converted data to the microprocessor;
the battery module voltage acquisition module is used for acquiring voltage data of each battery module in the 48V nickel-metal hydride battery, converting the acquired data and transmitting the converted data to the microprocessor;
The battery temperature acquisition module is used for acquiring temperature data detected by temperature sensors at temperature acquisition points in the 48V nickel-metal hydride battery, converting the acquired data and transmitting the converted data to the microprocessor.
Furthermore, the 48V nickel-metal hydride battery management system also comprises a level signal input port, the level signal input port is connected with the microprocessor, the level signal is input into the microprocessor through the level signal input port, and the microprocessor can perform corresponding actions according to the input level signal. The level signal comprises a level signal transmitted by an associated electronic component with CAN outside, and the corresponding action performed by the microprocessor according to the input level signal comprises controlling the relay driving module to work or transmitting data to a computer and the like.
the isolated CAN communication port module is connected with the microprocessor through an asynchronous communication signal line, and the isolated CAN communication port module is connected with the associated electronic component with the CAN outside through a shielded twisted pair. The arrangement of the isolated CAN communication port module CAN play a role in isolating interference resistance, so that data transmission between the microprocessor and the associated electronic component with the CAN is more accurate, and the safety of the battery management system is improved.
the 48V nickel-metal hydride battery management system is simple in design, adopts a centralized design, is simple in structure, small in size and low in cost, can be directly powered by the 48V nickel-metal hydride battery, does not need external power supply conversion for power supply, simplifies peripheral design and saves external cost; the CAN communication adopts an isolation communication mode, so that the anti-interference performance is strong, and the isolation safety of the system is ensured. The 48V nickel-hydrogen battery management system is used for managing the 48V nickel-hydrogen battery, the SOC of the battery can be kept in a reasonable range, the damage to the battery due to overcharge or over discharge is prevented, the service life of the 48V nickel-hydrogen battery is prolonged, the microprocessor is used for pre-judging the health state of the battery module according to the received current, temperature and voltage data of the battery and the power characteristics of the battery at different temperatures and in combination with the output characteristics of the battery at the front stage, the middle stage and the rear stage, the battery is intelligently monitored and detected, the health state of the battery is mastered, and data stored in the more stable and reliable data storage module of the battery system provide a basis for off-line analysis of technicians.
Drawings
fig. 1 is a schematic structural diagram of a 48V nickel-metal hydride battery management system in embodiment 1.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A48V nickel-metal hydride battery management system comprises a microprocessor MCU 1, a relay driving module 2, a power circuit 3, a battery current acquisition module 4, a battery total voltage acquisition module 5, a battery module voltage acquisition module 6, a battery temperature acquisition module 7, an isolation CAN communication interface module 8, a data storage module 9 and a level signal input port 10;
The microprocessor MCU 1 is respectively connected with the relay drive module 2, the battery current acquisition module 4, the battery total voltage acquisition module 5, the battery module voltage acquisition module 6, the battery temperature acquisition module 7, the isolated CAN communication interface module 8 and the data storage module 9, the microprocessor 1 is used for receiving the related data transmitted by the battery current acquisition module 4, the battery total voltage acquisition module 5, the battery module voltage acquisition module 6 and the battery temperature acquisition module 7, processing and analyzing the related data, transmitting the processed and analyzed data to the data storage module 9 for storage, simultaneously controlling whether the relay drive module 2 works or not according to the processed and analyzed data and transmitting the related data to the related electronic component 11 with the CAN outside through the isolated CAN communication interface module 8, and the related electronic component 11 with the CAN outside comprises a display screen, a battery total voltage acquisition module 5, a battery module voltage acquisition module 6, a battery temperature acquisition module 7, and a, A whole vehicle control unit, a charger, a computer and the like;
The power circuit 3 is used for converting power voltage provided by the 48V nickel-metal hydride battery 12 and then providing the converted power voltage to the microprocessor 1, the relay driving module 2, the battery current acquisition module 4, the battery total voltage acquisition module 5, the battery module voltage acquisition module 6, the battery temperature acquisition module 7, the isolated CAN communication interface module 8 and the data storage module 9;
the relay driving module 2 is used for receiving the data sent by the microprocessor 1 and correspondingly controlling the opening and closing of the relay 121 of the 48V nickel-metal hydride battery 12;
the isolated CAN communication port module 8 is connected with an associated electronic component 11 with CAN outside, and the isolated CAN communication port module 8 is used for transmitting relevant data transmitted by the microprocessor 1 to the associated electronic component 11 with CAN outside;
The battery current acquisition module 4 is connected with the hall sensor 122 of the 48V nickel-metal hydride battery 12, and the battery current acquisition module 4 is used for acquiring current data of the 48V nickel-metal hydride battery 12, converting the acquired data and transmitting the converted data to the microprocessor 1;
the battery total voltage acquisition module 5 is used for acquiring total voltage data of the 48V nickel-metal hydride battery 12, converting the acquired data and transmitting the converted data to the microprocessor 1;
The battery module voltage acquisition module 6 is used for acquiring voltage data of each battery module in the 48V nickel-metal hydride battery 12, converting the acquired data and transmitting the converted data to the microprocessor 1;
The battery temperature acquisition module 7 is used for acquiring temperature data detected by temperature sensors at various temperature acquisition points in the 48V nickel-metal hydride battery 12, converting the acquired data and transmitting the converted data to the microprocessor 1;
The level signal input port 10 is connected to the microprocessor 1, and the level signal is input to the microprocessor 1 through the level signal input port 10, and the microprocessor 1 can perform corresponding actions according to the input level signal. The level signal comprises a level signal transmitted by an associated electronic component with CAN outside, and the corresponding action of the microprocessor according to the input level signal comprises controlling the relay driving module to work or transmitting data to a computer and the like;
the isolated CAN communication port module 8 is connected with the microprocessor 1 through an asynchronous communication signal line, and the isolated CAN communication port module 8 is connected with an associated electronic component 11 with CAN outside through a shielded twisted pair.
Example 2
A 48V nickel-metal hydride battery management system, which has a structure similar to that of the 48V nickel-metal hydride battery management system of embodiment 1, except that: the level signal input port is not provided in the 48V nickel-metal hydride battery management system.

Claims (3)

1. A48V nickel-metal hydride battery management system is characterized in that: the intelligent power supply comprises a microprocessor, a relay driving module, a power circuit, a battery current acquisition module, a battery total voltage acquisition module, a battery module voltage acquisition module, a battery temperature acquisition module, an isolation CAN communication interface module and a data storage module;
the microprocessor is respectively connected with the relay driving module, the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module, the battery temperature acquisition module, the isolated CAN communication interface module and the data storage module, and is used for receiving related data transmitted by the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module and the battery temperature acquisition module, processing and analyzing the related data, transmitting the processed and analyzed data to the data storage module for storage, and simultaneously controlling whether the relay driving module works or not according to the processed and analyzed data and transmitting the related data to an external associated electronic component with CAN through the isolated CAN communication port module;
the power supply circuit is used for converting power supply voltage provided by the 48V nickel-metal hydride battery and then providing the converted power supply voltage to the microprocessor, the relay driving module, the battery current acquisition module, the battery total voltage acquisition module, the battery module voltage acquisition module, the battery temperature acquisition module, the isolated CAN communication interface module and the data storage module;
the relay driving module is used for receiving data sent by the microprocessor and correspondingly controlling the opening and closing of a relay of the 48V nickel-hydrogen battery;
The isolated CAN communication port module is connected with the associated electronic component with the CAN outside, and is used for transmitting the related data transmitted by the microprocessor to the associated electronic component with the CAN outside.
2. The 48V nickel-metal hydride battery management system of claim 1, wherein: the level signal input port is connected with the microprocessor, the level signal is input to the microprocessor through the level signal input port, and the microprocessor can perform corresponding actions according to the input level signal.
3. The 48V nickel metal hydride battery management system of claim 1 or 2, wherein: the isolated CAN communication port module is connected with the microprocessor through an asynchronous communication signal line, and the isolated CAN communication port module is connected with the associated electronic component with the CAN outside through a shielded twisted pair.
CN201910814945.XA 2019-08-30 2019-08-30 48V nickel-metal hydride battery management system Pending CN110556596A (en)

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Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province

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