CN111224174A - Battery management system for vehicle - Google Patents
Battery management system for vehicle Download PDFInfo
- Publication number
- CN111224174A CN111224174A CN201811407613.1A CN201811407613A CN111224174A CN 111224174 A CN111224174 A CN 111224174A CN 201811407613 A CN201811407613 A CN 201811407613A CN 111224174 A CN111224174 A CN 111224174A
- Authority
- CN
- China
- Prior art keywords
- slave
- board
- interface
- management system
- battery
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery management system for a vehicle, which utilizes a standardized interface to realize the connection between a master board and a slave board or between the slave board and the slave board, thereby realizing that the master board can not only carry out data communication with the slave board but also supply power to the slave board, stripping the power supply of the slave board from a battery module, and greatly improving the voltage sampling accuracy of the battery module.
Description
Technical Field
The invention relates to the technical field of vehicle spare and accessory parts, in particular to a battery management system for a vehicle.
Background
A Battery Management System (BMS), which is a system for managing a battery, generally has a function of measuring a voltage of the battery, prevents or avoids abnormal situations such as over-discharge, over-charge, and over-temperature of the battery, and is one of the three types of electricity in the core field of new energy vehicles.
In a traditional battery management system, a slave plate usually gets electricity from a single battery, so that the single battery not only needs to provide resistance consumption during balancing, but also needs to supply power to the slave plate, so that the deviation between a measured value and an actual value is increased, the estimation of the residual electric quantity (SOC) of a battery is influenced, the estimation deviation of the vehicle on the power supply time of the whole battery is influenced, and the use experience is influenced; in addition, in the conventional BMS, daisy-chain communication is adopted between the master board and the slave board, each slave board has an "input" interface and an "output" interface, the input of each slave board is connected to the output interface of the next slave board, the slave board # N-1 transmits data to the slave board # N, and the slave board # N transmits its own data and the data of # N-1 to the slave board # N + 1. One advantage of daisy chaining is therefore that if the daisy chain is broken in the middle, the following slave boards can continue to communicate as they are, passing data, and the disadvantage is also evident in that the slave board connected to the master board is the most burdensome and consumes the most power. Moreover, this communication method not only limits the length of the communication cable and reduces the data transmission rate, but also results in poor anti-interference performance of electromagnetic compatibility (EMC) of the system. In the complex electromagnetic environment of the current vehicle, the phenomenon of communication frame loss or communication interruption is easy to occur, the arrangement position of a BMS in the vehicle is limited, and the space optimization requirement of the vehicle is influenced. .
Disclosure of Invention
In order to solve the problems, the invention provides a battery management system for a vehicle, which utilizes a standardized interface to realize the connection between a master board and a slave board or between the slave board and the slave board, thereby realizing that the master board can not only carry out data communication with the slave board but also supply power to the slave board, separating the power supply of the slave board from a battery module, and greatly improving the voltage sampling accuracy of the battery module.
Specifically, the invention provides a battery management system for a vehicle, which comprises a main board, at least one slave board and at least one battery module, wherein standardized interfaces are arranged on the main board and the slave board, the slave board is connected with the main board through the standardized interfaces, the main board supplies power to the slave board, the battery module is electrically connected with the slave board, and the slave board collects voltage signals in the battery module.
Preferably, the battery management system includes N slave boards, each slave board is provided with one standardized interface, the main board is provided with N standardized interfaces, and each slave board is connected to the slave board through the standardized interface.
Preferably, the battery management system includes N slave boards, each slave board is provided with two standardized interfaces, the main board is respectively connected to the two slave boards through the standardized interfaces, and the two slave boards are sequentially connected to N-2 slave boards through the standardized interfaces.
Preferably, the standardized interface includes a USB interface or a POE interface.
Preferably, the POE interfaces include one or more of an SC fiber interface, an RJ-45 interface, an FDDI interface, an AUI interface, a BNC interface, and a Console interface.
Compared with the prior art, the invention has the advantages that:
1) according to the invention, the main board and the slave board or the slave board are connected through the standardized interface, so that data communication can be realized between the main board and the slave board, and power can be supplied to the slave board through the main board, so that the power supply of the slave board is stripped from the battery module, and the voltage sampling accuracy of the battery module is greatly improved;
2) the battery management system adopts a connection mode of a standardized interface, and greatly improves the communication distance, the communication speed and the communication anti-jamming capability between the master board and the slave board and between the slave boards compared with the traditional daisy-chained pure cable connection.
Drawings
FIG. 1 is a schematic diagram of a star-configured battery management system in accordance with a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of a ring-structured battery management system according to a preferred embodiment of the present invention.
Detailed Description
The advantages of the invention are explained in detail below with reference to the drawings and the embodiments.
The first embodiment is as follows:
a specific embodiment of a battery management system for a vehicle in accordance with the present invention is provided below, in which the battery management system mainly includes: in the embodiment, standardized interfaces are arranged on the master board and the slave board, and the master board and the slave board are connected through the standardized interfaces, so that data communication can be performed between the master board and the slave board, and power can be supplied to the slave board through the master board; simultaneously, be connected battery module and slave plate electricity, then, the battery module no longer need be to the slave plate power supply, only provides data such as voltage to the slave plate to, the realization peels off the battery monomer in the slave plate power supply follow battery module, when battery monomer carries out the equilibrium, need not to supply power to battery slave plate, only has the resistance consumption of equilibrium itself, greatly reduced the deviation between measured value and the actual value, improved the accuracy of battery SOC estimation.
The invention adopts the connection mode of the standardized interface, so that the connection mode can be used for enabling the connection between the master board and the slave board or between the slave board and the slave board not to be limited by the communication distance and the communication speed, the connection mode is separated from the traditional connection modes such as daisy chain and the like, and more connection modes can be adopted. The following embodiments are provided as examples of the present invention, and it should be understood that the following embodiments are merely illustrative of the structures according to the present invention, and the present invention should not be limited to the following embodiments, and all structures similar to or derived from the following embodiments of the present invention should be protected by the present invention.
Example two:
referring to fig. 1, a schematic diagram of a star-configured battery management system according to a preferred embodiment of the invention is shown. As can be seen from the figure, the battery management system provided in this embodiment includes a master board, N slave boards, and N battery modules, where each battery module may include M battery cells according to actual requirements. In this embodiment, standardized interfaces are respectively disposed on the master board and the N slave boards, wherein the master board is provided with the N standardized interfaces, and each slave board is provided with one standardized interface, so that each slave board is directly connected with the master board through the standardized interface to realize data communication with the master board and obtain electricity from the master board; meanwhile, each slave plate is electrically connected with a battery module comprising M battery monomers respectively, and data such as voltage and the like are collected from each battery monomer to finally form a star-shaped framework. According to the scheme, the slave board is directly in data communication with the master board and gets electricity, so that unnecessary data transmission obstacles and electric energy consumption are avoided, and the efficiency of data transmission and electric energy transmission is improved.
Example three:
fig. 2 is a schematic structural diagram of a ring-structured battery management system according to a preferred embodiment of the present invention. As can be seen from the figure, the battery management system provided in this embodiment includes a master board, N slave boards, and N battery modules, where each battery module may include M battery cells according to actual requirements. In this embodiment, standardized interfaces are respectively disposed on the master board and the N slave boards, wherein two standardized interfaces are disposed on the master board, and two standardized interfaces are disposed on each slave board, so that the master board is connected with the two slave boards through the standardized interfaces, and the two slave boards are sequentially connected in series with N-2 slave boards through the standardized interfaces thereon, that is, the N slave boards are connected with each other through the standardized interfaces thereon to form a long chain, the slave boards at two ends of the long chain are connected to the master board through the standardized interfaces, and thus, the master board and the N slave boards form an annular framework; the N battery modules including M battery cells are connected to the N slave plates one by one, respectively. Therefore, the main board supplies power to the N slave boards and carries out data communication, and the slave boards collect data such as voltage from the battery module. In the scheme, only two standardized interfaces are required to be arranged on the main board, the layout pressure of the main board is reduced, and the manufacturing cost can be saved.
Based on the above embodiment, the standardized interface is an input/output port having more than 2 transmission lines, and power transmission and data transmission can be simultaneously realized based on the interface. For example, the USB interface or the POE interface, etc., where the USB is a universal serial bus, has 4 lines, and two power supplies are used for two signals, where the signals are transmitted in serial, and the transmission efficiency is high; the POE interface can realize excellent lan communication, including an SC fiber interface, an RJ-45 interface, an FDDI interface, an AUI interface, a BNC interface, a Console interface, and the like, and can realize high-speed and efficient power and data transmission.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (5)
1. A battery management system for a vehicle includes,
a main board, at least one slave board and at least one battery module,
standardized interfaces are arranged on the main board and the slave board, the slave board is connected with the main board by the standardized interfaces, the main board supplies power to the slave board,
the battery module is electrically connected with the slave plate, and the slave plate collects voltage signals in the battery module.
2. The battery management system of claim 1,
comprises N slave boards, each slave board is provided with one standardized interface,
the master board is provided with N standardized interfaces, and each slave board is connected with the slave board through the standardized interfaces.
3. The battery management system of claim 1,
comprises N slave plates, wherein two standardized interfaces are arranged on each slave plate,
the mainboard is respectively connected with the two slave plates through the standardized interfaces, and the two slave plates are sequentially connected with the N-2 slave plates through the standardized interfaces.
4. The battery management system of claim 1,
the standardized interface comprises a USB interface or a POE interface.
5. The battery management system of claim 4,
the POE interface comprises one or more of an SC fiber interface, an RJ-45 interface, an FDDI interface, an AUI interface, a BNC interface and a Console interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407613.1A CN111224174A (en) | 2018-11-23 | 2018-11-23 | Battery management system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407613.1A CN111224174A (en) | 2018-11-23 | 2018-11-23 | Battery management system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111224174A true CN111224174A (en) | 2020-06-02 |
Family
ID=70830342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811407613.1A Pending CN111224174A (en) | 2018-11-23 | 2018-11-23 | Battery management system for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111224174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086696A (en) * | 2020-09-15 | 2020-12-15 | 安徽江淮汽车集团股份有限公司 | Battery pack management system for new energy automobile |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119036A (en) * | 2007-07-23 | 2008-02-06 | 柏禄帕迅能源科技有限公司 | Battery management system for electric automobile |
| CN101308908A (en) * | 2008-01-31 | 2008-11-19 | 浙江省电力公司 | Standardized cell module |
| US20090146610A1 (en) * | 2007-12-11 | 2009-06-11 | Antonio Trigiani | Battery management system |
| CN102545292A (en) * | 2010-12-29 | 2012-07-04 | 李鑫 | One-line communication point-to-point type single lithium ion battery management system based on system on chip |
| CN103107570A (en) * | 2012-12-10 | 2013-05-15 | 惠州市亿能电子有限公司 | Communication structure of battery management system and extension method of battery management system |
| CN105990868A (en) * | 2015-02-11 | 2016-10-05 | 国网上海市电力公司 | Cell management system used in electricity changing energy storage system |
| CN107031375A (en) * | 2016-12-05 | 2017-08-11 | 上海展枭新能源科技有限公司 | The novel power supply system and its circuit control method of a kind of hybrid vehicle |
| CN108683202A (en) * | 2018-04-12 | 2018-10-19 | 浙江正泰电器股份有限公司 | Energy-storage system |
-
2018
- 2018-11-23 CN CN201811407613.1A patent/CN111224174A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119036A (en) * | 2007-07-23 | 2008-02-06 | 柏禄帕迅能源科技有限公司 | Battery management system for electric automobile |
| US20090146610A1 (en) * | 2007-12-11 | 2009-06-11 | Antonio Trigiani | Battery management system |
| CN101308908A (en) * | 2008-01-31 | 2008-11-19 | 浙江省电力公司 | Standardized cell module |
| CN102545292A (en) * | 2010-12-29 | 2012-07-04 | 李鑫 | One-line communication point-to-point type single lithium ion battery management system based on system on chip |
| CN103107570A (en) * | 2012-12-10 | 2013-05-15 | 惠州市亿能电子有限公司 | Communication structure of battery management system and extension method of battery management system |
| CN105990868A (en) * | 2015-02-11 | 2016-10-05 | 国网上海市电力公司 | Cell management system used in electricity changing energy storage system |
| CN107031375A (en) * | 2016-12-05 | 2017-08-11 | 上海展枭新能源科技有限公司 | The novel power supply system and its circuit control method of a kind of hybrid vehicle |
| CN108683202A (en) * | 2018-04-12 | 2018-10-19 | 浙江正泰电器股份有限公司 | Energy-storage system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086696A (en) * | 2020-09-15 | 2020-12-15 | 安徽江淮汽车集团股份有限公司 | Battery pack management system for new energy automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7782014B2 (en) | System and method for battery management | |
| CN109494418B (en) | Battery core sampling device and method of battery management system | |
| WO2012165771A2 (en) | System for storing power comprising modularized bms and method for controlling same | |
| CN102623761B (en) | Battery management system and management method thereof | |
| CN104871395A (en) | Battery management system capable of transmitting secondary protection signal and diagnostic signal using few insulation elements | |
| CN101335367A (en) | Distributed battery management system and management method | |
| CN107878243A (en) | A kind of battery management system and method | |
| CN105474572A (en) | Communication system having synchronized units and synchronization method for units | |
| CN111224174A (en) | Battery management system for vehicle | |
| CN210608604U (en) | High-voltage battery system | |
| CN102456914B (en) | A kind ofly be applicable to the automobile-used lithium ion battery pack system of power electric | |
| CN204290373U (en) | A kind of battery of electric vehicle control system | |
| EP2988190B1 (en) | Communication terminal for constructing daisy chain communication network without distinction between input connector and output connector | |
| CN206834806U (en) | A kind of battery management system | |
| CN210092273U (en) | Grouped battery data acquisition device and management system | |
| CN112644329A (en) | Battery electronic component capable of managing 48-string battery cells | |
| CN202319955U (en) | Discrete cell management system | |
| CN107215221B (en) | Series battery distributed active non-dissipative equalization circuit, battery and automobile | |
| CN102130360A (en) | Lithium battery module | |
| Xiao et al. | A li-ion battery management system based on MCU and OZ8920 | |
| CN208939110U (en) | A kind of PCB compoboard for power battery current acquisition and current balance | |
| CN110649678A (en) | High-voltage battery system | |
| CN219979777U (en) | Vehicle and power battery system thereof | |
| CN204089224U (en) | Batteries of electric automobile group energy balance control system | |
| CN214850582U (en) | Protection circuit of power management system main control unit BMU |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200602 |
|
| RJ01 | Rejection of invention patent application after publication |