CN110707381A - Battery management system with relay drive and MOS tube drive - Google Patents
Battery management system with relay drive and MOS tube drive Download PDFInfo
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- CN110707381A CN110707381A CN201910966311.6A CN201910966311A CN110707381A CN 110707381 A CN110707381 A CN 110707381A CN 201910966311 A CN201910966311 A CN 201910966311A CN 110707381 A CN110707381 A CN 110707381A
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- cpu
- analog front
- power supply
- bus
- battery
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- 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
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a battery management system with a relay driver and an MOS tube driver, which comprises a CPU, a first analog front end, a second analog front end, an input interface, a reserved wireless communication interface, a power supply, an isolation power supply, a storage, a serial communication and a CAN bus, wherein the CPU is electrically connected with the first analog front end, the reserved wireless communication interface, the storage, the serial communication and the CAN bus, the CPU on a circuit board built in a battery is connected with an external relay and the MOS tube through the serial communication and the CAN bus, the CPU converts energy provided by the battery into an electric energy device which accords with the CPU standard and then provides driving electric signals for the relay and the MOS tube, an analog signal sent by the CPU is reduced to lower voltage by a built-in transformer after the analysis processing of the first analog front end and the second analog front end, and then the voltage is rectified into direct current to be output for the serial communication to complete the work of the system, and manages the operation of the battery.
Description
Technical Field
The invention relates to a battery management system, in particular to a battery management system with a relay drive and an MOS (metal oxide semiconductor) tube drive.
Background
At present, with the rapid development of electric vehicles, the requirement on battery energy is higher and higher, and a storage battery management system is used as an important component of a power battery, and is used for directly detecting and managing the whole operation process of the power battery of the electric vehicle, including several aspects of battery charging and discharging process, SOC estimation, battery temperature, balancing among single batteries and battery fault diagnosis, and the total voltage of the conventional power battery pack in the prior art can reach more than 100 v.
With the development of national economy, energy and environmental problems are gradually brought forward by various countries, and the attention is turned to energy-saving and environment-friendly electric vehicles. In an electric automobile and a large-scale energy storage battery system, the voltage is often very high, generally several hundred volts, and is about 400V-800V, and each electronic module in the power load system is connected with the MOS transistor through a relay, and the relay and the MOS transistor drive become important parts in the power load system, so that once the relay and the MOS transistor drive have problems, the safety of the whole power drive system is affected.
Disclosure of Invention
The invention aims to provide a battery management system with a relay drive and an MOS tube drive, which has the advantages that a CPU converts energy provided by a battery into electric energy meeting the CPU standard, then provides drive electric signals for the relay and the MOS tube, and manages the work of the battery.
In order to achieve the purpose, the invention provides the following technical scheme: a battery management system with a relay driver and an MOS (metal oxide semiconductor) tube driver comprises a CPU (central processing unit), a first analog front end, a second analog front end, an input interface, a reserved wireless communication interface, a power supply, an isolated power supply, a storage, a serial communication and a CAN (controller area network) bus, wherein the CPU and the first analog front end, the reserved wireless communication interface, the storage, the serial communication and the CAN bus are electrically connected;
the two ends of the first analog front end and the second analog front end are connected with the anode and the cathode of the battery, the first analog front end is also connected with an MOS transistor Q1 and an MOS transistor Q1 respectively, and the first analog front end is charged and discharged respectively;
the CPU is used as the operation and control core of the system, is the final execution unit of information processing and program operation, and is responsible for reading instructions, processing the instructions, executing operation, controlling time and processing data.
The first analog front end and the second analog front end are used for processing analog signals output by the CPU, digitalizing and analyzing the analog signals, and the processing method comprises signal amplification, frequency conversion, modulation, demodulation, adjacent frequency processing, level adjustment and control and mixing;
the input interface is used as an input/output interface and is a connecting circuit for exchanging information between the CPU and external equipment, and is connected with the CPU through serial port communication and a CAN bus to carry out data interaction;
the reserved wireless communication interfaces refer to a plurality of interfaces preset between the CPU standard communication;
the power supply converts the energy provided by the battery into electric energy conforming to the CPU standard, the isolation power supply reduces the voltage of the power supply to lower voltage through a built-in transformer, and then the power supply is rectified into direct current to be output for serial port communication;
the storage is used for storing programs and data of the CPU, or data can be read from the storage to the CPU;
the serial communication and the CAN bus are used for embedding an interface of data communication in the system, are used as a code converter between the CPU and the serial equipment, and are converted into byte data when the data are sent out from the CPU through the serial port.
Further, the source of the MOS transistor Q1 and the power supply are connected to two ends of the relay.
Furthermore, the CPU, the first analog front end, the second analog front end, the input interface, the reserved wireless communication interface, the power supply, the isolated power supply, the storage, the serial communication and the CAN bus are soldered on a circuit board in the battery, the input interface and the reserved wireless communication interface are arranged on the edge of the circuit board, the CPU is soldered in the middle, and the wiring of the serial communication and the CAN bus is arranged along the soldered line on the circuit board.
Compared with the prior art, the invention has the beneficial effects that:
this take relay drive and MOS pipe driven battery management system, CPU on the built-in circuit board of battery passes through serial communication and CAN bus and outside relay and MOS union coupling, CPU provides driven signal of telecommunication for relay and MOS pipe behind the device that becomes the electric energy that accords with the CPU standard with the energy conversion that the battery provided, the analog signal that CPU sent, after first simulation front end and second simulation front end analysis processes, the isolation power will fall to lower voltage through built-in transformer with the voltage of power, then commutate into direct current output and supply serial communication to use, accomplish the work of this system, and manage the work of battery.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a diagram of the circuit board structure of the present invention;
FIG. 3 is a top view of the circuit board structure of the present invention;
FIG. 4 is a side view of the circuit board structure of the present invention;
FIG. 5 is a diagram of a second circuit board structure according to an embodiment of the present invention;
FIG. 6 is a second circuit board view of an embodiment of the present invention;
FIG. 7 is a side view of a second circuit board according to an embodiment of the present invention;
FIG. 8 is a diagram of a three-board structure according to an embodiment of the present invention;
FIG. 9 is a three circuit board view of an embodiment of the present invention;
fig. 10 is a side view of a three circuit board of an embodiment of the present invention.
In the figure: 1. a CPU; 2. a first analog front end; 3. a second analog front end; 4. an input interface; 5. reserving a wireless communication interface; 6. a power source; 7. isolating the power supply; 8. storing; 9. serial port communication; 10. a CAN bus.
Detailed Description
The technical scheme in the embodiment of the invention will be made clear below by combining the attached drawings in the embodiment of the invention; fully described, it is to be understood that the described embodiments are merely exemplary of some, but not all, embodiments of the invention and that all other embodiments, which can be derived by one of ordinary skill in the art based on the described embodiments without inventive faculty, are within the scope of the invention.
Referring to fig. 1, a battery management system with a relay driver and a MOS transistor driver includes a CPU1, a first analog front end 2, a second analog front end 3, an input interface 4, a reserved wireless communication interface 5, a power supply 6, an isolated power supply 7, a storage 8, a serial communication 9 and a CAN bus 10, the CPU1 is electrically connected to the first analog front end 2, the reserved wireless communication interface 5, the storage 8, the serial communication 9 and the CAN bus 10, the CPU1 is electrically connected to the second analog front end 3 through an isolated communication mode, an input end of the CPU1 is electrically connected to the power supply 6, the serial communication 9 and the CAN bus 10 are electrically connected to the input interface 4, an input end of the serial communication 9 is electrically connected to the isolated power supply 7, and an input end of the isolated power supply 7 is electrically connected to the power supply 6;
the two ends of the first analog front end 2 and the second analog front end 3 are connected with the positive electrode and the negative electrode of the battery, the first analog front end 2 is also respectively connected with an MOS tube Q1 and an MOS tube Q2, the first analog front end 2 is respectively charged and discharged, and the source electrode of the MOS tube Q2 and the power supply 6 are connected with the two ends of the relay;
the CPU1, which is the core of the system operation and control, is the final execution unit of information processing and program operation, and is responsible for reading instructions, processing instructions, executing operations, controlling time, and processing data.
The first analog front end 2 and the second analog front end 3 are used for processing analog signals output by the CPU1, digitizing and analyzing the analog signals, and the processing method comprises signal amplification, frequency conversion, modulation, demodulation, adjacent frequency processing, level adjustment and control and mixing;
the input interface 4 is used as an input/output interface, is a connecting circuit for exchanging information between the CPU1 and external equipment, and is connected with the CPU1 through serial port communication 9 and the CAN bus 10 to carry out data interaction;
the reserved wireless communication interface 5 refers to a plurality of preset interfaces in standard communication with the CPU 1;
the power supply 6 converts the energy provided by the battery into electric energy conforming to the standard of the CPU1, the isolation power supply 7 reduces the voltage of the power supply 6 to a lower voltage through a built-in transformer, and then the voltage is rectified into direct current to be output for the serial port communication 9 to use;
the storage 8 is for storing programs and data of the CPU1, or data can be read therefrom to the CPU 1;
the serial communication 9 and the CAN bus 10 are used as interfaces for data communication in the embedded system, and serve as a transcoder between the CPU1 and the serial device, converting to byte data when data is sent out from the CPU1 through the serial port.
The CPU1 on the built-in circuit board of the battery is connected with the external relay and the MOS tube through the serial communication 9 and the CAN bus 10, the CPU1 converts the energy provided by the battery into a device which accords with the electric energy of the CPU1 standard and then provides driving electric signals for the relay and the MOS tube, the analog signal sent by the CPU1 is analyzed and processed by the first analog front end 2 and the second analog front end 3, the voltage of the power supply 6 is reduced to lower voltage through the built-in transformer by the isolation power supply 7 and then rectified into direct current to be output for the serial communication 9 to use, the work of the system is finished, and the work of the battery is managed.
The first embodiment is as follows:
referring to fig. 2-3, a CPU1, a first analog front end 2, a second analog front end 3, an input interface 4, a reserved wireless communication interface 5, a power supply 6, an isolated power supply 7, a memory 8, a serial communication 9 and a CAN bus 10 are soldered on a circuit board, the input interface 4 and the reserved wireless communication interface 5 are arranged on the edge of the circuit board, a CPU1 is soldered in the middle, the wiring of the serial communication 9 and the CAN bus 10 is arranged along the soldered line on the circuit board, the CPU1, the first analog front end 2, the second analog front end 3, the input interface 4, the reserved wireless communication interface 5, the power supply 6, the isolated power supply 7, the memory 8, the serial communication 9 and the CAN bus 10 are respectively arranged on two parallel circuit boards, and the input interface 4 and the reserved wireless communication interface 5 are arranged on the edge for convenient installation.
Example two:
referring to fig. 4-7, a CPU1, a first analog front end 2, a second analog front end 3, an input interface 4, a reserved wireless communication interface 5, a power supply 6, an isolated power supply 7, a memory 8, a serial communication 9 and a CAN bus 10 are soldered on a circuit board, the circuit board adopts a double-layer overlapping mode and is fixed by bolts penetrating through four end corners of the overlapped circuit board, the input interface 4 and the reserved wireless communication interface 5 are arranged on the edge of the circuit board below, the CPU1 is soldered in the middle, the wiring of the serial communication 9 and the CAN bus 10 is arranged along the soldered circuit on the circuit board, the transverse area is reduced by adopting the double-layer circuit board overlapping mode, the volume is reduced, and the utilization rate of the circuit board is improved in space.
Example three:
referring to fig. 8-10, a CPU1, a first analog front end 2, a second analog front end 3, an input interface 4, a reserved wireless communication interface 5, a power supply 6, an isolated power supply 7, a memory 8, a serial communication 9 and a CAN bus 10 are soldered on a single circuit board, the input interface 4 and the reserved wireless communication interface 5 are arranged on the edge of the circuit board, a CPU1 is soldered in the middle, and the wiring of the serial communication 9 and the CAN bus 10 is arranged along the soldered circuit on the circuit board, so that a plurality of elements are concentrated together, the volume of the whole is reduced, and the integration level is higher.
In summary, in the battery management system with the relay driver and the MOS transistor driver, the CPU1 on the circuit board built in the battery is connected with the external relay and the MOS transistor through the serial communication 9 and the CAN bus 10, the CPU1 converts the energy provided by the battery into a device conforming to the electric energy of the CPU1 standard and then provides driving electric signals for the relay and the MOS transistor, the analog signal sent by the CPU1 is analyzed and processed by the first analog front end 2 and the second analog front end 3, the isolation power supply 7 reduces the voltage of the power supply 6 to a lower voltage through the built-in transformer, and then the voltage is rectified into direct current to be output for the serial communication 9, thereby completing the operation of the system and managing the operation of the battery.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (3)
1. A battery management system with a relay driver and an MOS (metal oxide semiconductor) tube driver is characterized by comprising a CPU (1), a first analog front end (2), a second analog front end (3), an input interface (4), a reserved wireless communication interface (5), a power supply (6), an isolated power supply (7), a storage (8), a serial communication (9) and a CAN bus (10), wherein the CPU (1) is electrically connected with the first analog front end (2), the reserved wireless communication interface (5), the storage (8), the serial communication (9) and the CAN bus (10), the CPU (1) is electrically connected with the second analog front end (3) in an isolated communication mode, the input end of the CPU (1) is electrically connected with the power supply (6), the serial communication (9) and the CAN bus (10) are electrically connected with the input interface (4), and the input end of the serial communication (9) is electrically connected with the isolated power supply (7), the input end of the isolation power supply (7) is electrically connected with the power supply (6);
the two ends of the first analog front end (2) and the second analog front end (3) are connected with the positive electrode and the negative electrode of the battery, the first analog front end (2) is also connected with the MOS transistor Q1 and the MOS transistor Q2 respectively, and the first analog front end (2) is charged and discharged respectively;
the CPU (1) is used as an operation and control core of the system, is a final execution unit for information processing and program operation, and is responsible for reading instructions, processing the instructions, executing operations, controlling time and processing data.
The first analog front end (2) and the second analog front end (3) are used for processing analog signals output by the CPU (1), digitalizing and analyzing the analog signals, and the processing method comprises signal amplification, frequency conversion, modulation, demodulation, adjacent frequency processing, level adjustment and control and mixing;
the input interface (4) is used as an input/output interface and is a connecting circuit for exchanging information between the CPU (1) and external equipment, and is connected with the CPU (1) through serial port communication (9) and a CAN bus (10) to carry out data interaction;
the reserved wireless communication interfaces (5) refer to a plurality of preset interfaces in standard communication with the CPU (1);
the power supply (6) converts the energy provided by the battery into electric energy conforming to the standard of the CPU (1), the isolation power supply (7) reduces the voltage of the power supply (6) to lower voltage through a built-in transformer, and then the voltage is rectified into direct current to be output for serial communication (9);
the memory (8) is used for storing programs and data of the CPU (1) or reading data from the programs and the data to the CPU (1);
the serial port communication (9) and the CAN bus (10) are used as interfaces for data communication in the embedded system, are used as code converters between the CPU (1) and serial equipment, and are converted into byte data when the data are sent out from the CPU (1) through a serial port.
2. The battery management system with the relay drive and the MOS tube drive as claimed in claim 1, wherein the source of the MOS tube Q2 and the power supply (6) are connected to two ends of the relay.
3. The battery management system with the relay driver and the MOS tube driver as claimed in claim 1, wherein the CPU (1), the first analog front end (2), the second analog front end (3), the input interface (4), the reserved wireless communication interface (5), the power supply (6), the isolation power supply (7), the storage (8), the serial communication (9) and the CAN bus (10) are soldered on a circuit board inside the battery, the input interface (4) and the reserved wireless communication interface (5) are arranged on the edge of the circuit board, the CPU (1) is soldered in the middle, and the wiring of the serial communication (9) and the CAN bus (10) is arranged along the soldered line on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966311.6A CN110707381A (en) | 2019-10-12 | 2019-10-12 | Battery management system with relay drive and MOS tube drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910966311.6A CN110707381A (en) | 2019-10-12 | 2019-10-12 | Battery management system with relay drive and MOS tube drive |
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| Publication Number | Publication Date |
|---|---|
| CN110707381A true CN110707381A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910966311.6A Pending CN110707381A (en) | 2019-10-12 | 2019-10-12 | Battery management system with relay drive and MOS tube drive |
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| CN (1) | CN110707381A (en) |
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| US20170365885A1 (en) * | 2015-02-26 | 2017-12-21 | Lg Chem, Ltd. | Function verification system for secondary battery management device |
| US20180208066A1 (en) * | 2017-01-26 | 2018-07-26 | Borgward Trademark Holdings Gmbh | Method, battery management system and vehicle for charging awakening |
| CN109177807A (en) * | 2018-09-13 | 2019-01-11 | 浙江零跑科技有限公司 | A kind of novel battery management system for electric car |
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2019
- 2019-10-12 CN CN201910966311.6A patent/CN110707381A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160181587A1 (en) * | 2010-11-29 | 2016-06-23 | Martin Koebler | Portable jump starter apparatus with simplified safety protection |
| US20170365885A1 (en) * | 2015-02-26 | 2017-12-21 | Lg Chem, Ltd. | Function verification system for secondary battery management device |
| CN107492684A (en) * | 2016-12-12 | 2017-12-19 | 宝沃汽车（中国）有限公司 | The battery management system and vehicle of electrokinetic cell |
| CN106740585A (en) * | 2017-01-24 | 2017-05-31 | 沈阳工业大学 | CAN Bus in Electric entire car controller |
| US20180208066A1 (en) * | 2017-01-26 | 2018-07-26 | Borgward Trademark Holdings Gmbh | Method, battery management system and vehicle for charging awakening |
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Application publication date: 20200117 |