CN108258344A - From control module and battery management system - Google Patents

From control module and battery management system Download PDF

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Publication number
CN108258344A
CN108258344A CN201810170739.5A CN201810170739A CN108258344A CN 108258344 A CN108258344 A CN 108258344A CN 201810170739 A CN201810170739 A CN 201810170739A CN 108258344 A CN108258344 A CN 108258344A
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CN
China
Prior art keywords
circuit
voltage
control module
single chip
temperature
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
CN201810170739.5A
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Chinese (zh)
Inventor
姜新路
南金瑞
韩留义
罗恒
杨志垒
耿晓明
邹辉辉
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Beijing National Battery Technology Co Ltd
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Beijing National Battery Technology Co Ltd
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Filing date
Publication date
Application filed by Beijing National Battery Technology Co Ltd filed Critical Beijing National Battery Technology Co Ltd
Priority to CN201810170739.5A priority Critical patent/CN108258344A/en
Publication of CN108258344A publication Critical patent/CN108258344A/en
Pending legal-status Critical Current

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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
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • 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
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between 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
    • 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
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention provides one kind from control module and battery management system；It is related to field of battery management, should should includes power circuit, single chip circuit, telecommunication circuit, voltage collection circuit, temperature collection circuit and active equalization circuit from control module from control module application in electric vehicle.The present invention can ensure that battery pack is long-term, effectively runs.

Description

From control module and battery management system
Technical field
The present invention relates to field of battery management, more particularly, to one kind from control module and battery management system.
Background technology
Under the background for advocating energy-saving and emission-reduction in the whole world, using on-vehicle battery group as the electric vehicle of power, increasingly by people Attention.On-vehicle battery group is composed in series by multiple single batteries, the capacity of entire battery pack system by capacity minimum list Body is determined that the otherness of battery capacity can reduce the actually available capacity of battery pack, so as to influence the performance of whole group battery, Then for the equilibrium treatment of battery capacity, become promotion battery performance, permanently effective can be provided for electric vehicle The key of power.
At present, for the equilibrium treatment of battery capacity be typically discharged using the discharge resistance monomer higher to voltage so that Itself and relatively low the being consistent property of battery of voltage, electric energy dissipate in the form of heat.This mode can only be high to voltage monomer Electric discharge, it is impossible to which the monomer low to capacity carries out supplement electricity, and electric energy greatly has been lost so that battery pack permanently effective can not be transported Row.
Invention content
In view of this, the purpose of the present invention is to provide one kind from control module and battery management system, to ensure battery pack For a long time, effectively operation.
In a first aspect, the electricity of electric vehicle should be set to from control module from control module an embodiment of the present invention provides one kind Pond manages system, includes power circuit, single chip circuit, telecommunication circuit, voltage collection circuit, temperature collection circuit from control module And active equalization circuit；Single chip circuit is electric with telecommunication circuit, voltage collection circuit, temperature collection circuit and active equalization respectively Road connects；Telecommunication circuit is connected by the primary module of CAN bus and battery management system；
Power circuit is used to power；Voltage collection circuit passes through voltage sensor and each power battery phase of power battery pack Even, for acquiring the voltage of power battery, and collected voltage data is transmitted to single chip circuit；Voltage collection circuit packet Include 27 voltage monitoring points；Temperature collection circuit is used to acquire the temperature of power battery by temperature sensor, and will collect Temperature data be transmitted to single chip circuit；Temperature collection circuit includes 8 temperature monitoring points；Active equalization circuit respectively with list Piece electromechanics road is connected with each power battery, for each power battery being made to reach equilibrium state under the control of single chip circuit；It is single Piece electromechanics road is used to that voltage data and temperature data to be sent to primary module by telecommunication circuit, and single chip circuit is additionally operable to control Master control equalizing circuit, so that each power battery reaches equilibrium state.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiment of first aspect, wherein, it is main Dynamic equalizing circuit uses the working method of two-way active equalization.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect Possible embodiment, wherein, active equalization circuit includes equalizer transformer and equilibrium selection switchs；Equilibrium selection is switched and is moved Power battery corresponds；Single chip circuit control equilibrium selection switch, by equalizer transformer so that each power battery reaches equal Weighing apparatus state.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiment of first aspect, wherein, electricity Acquisition Circuit is pressed to include voltage acquisition component and voltage acquisition switch；Voltage acquisition component sets 27 voltage monitoring points altogether；Institute Voltage monitoring point is stated to correspond with voltage acquisition switch；The single chip circuit controls the voltage acquisition switch, with Control the working condition of each voltage monitoring point.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiment of first aspect, wherein, it is single Piece electromechanics road includes program debugging unit and single chip circuit control unit；Program debugging unit is used to receive the control of host computer Instruction, with the program to single chip circuit control unit into edlin.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiment of first aspect, wherein, it is single Piece electromechanics road further includes AD converter；AD converter is connect respectively with voltage collection circuit and temperature collection circuit；AD converter For the analog signal of voltage collection circuit and the output of temperature collection circuit to be converted to digital signal.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiment of first aspect, wherein, Plug connector circuit is further included from control module；Plug connector circuit respectively with voltage collection circuit, temperature collection circuit and active equalization Circuit connects；Voltage collection circuit, temperature collection circuit and active equalization circuit are connect by plug connector circuit with power battery.
The 6th kind of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 7th kind of first aspect Possible embodiment further includes shell from control module；Shell is cuboid；The material of housing includes aluminium alloy.
Second aspect, the embodiment of the present invention additionally provide a kind of battery management system, which is applied to electricity Electrical automobile；The battery management system include a primary module and it is multiple it is above-mentioned from control module；Primary module by CAN bus with it is multiple From control module connection.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, wherein, it is more It is a that management is grouped to the power battery pack of electric vehicle respectively from control module, to the voltage of the power battery of power battery pack It is monitored with temperature, monitoring data is fed back into primary module by CAN bus；Primary module adjusts electricity according to the monitoring data The working condition in pond.
An embodiment of the present invention provides one kind from control module and battery management system, from control mould voltage collection circuit in the block It is connected by voltage sensor with the power battery of power battery pack, the voltage data of the power battery of acquisition is transmitted to monolithic Electromechanical road；The voltage collection circuit includes 27 voltage monitoring points；Temperature collection circuit is acquired described dynamic by temperature sensor The temperature of power battery, the temperature collection circuit include 8 monitoring points；And temperature data is transmitted to single chip circuit, the monolithic Voltage data and temperature data are sent to primary module by electromechanical road by telecommunication circuit again；Active equalization circuit and single chip circuit It is connected, is controlled by single chip circuit so that power battery reaches equilibrium state.Which reduces the capacitance loss of battery, improves Battery performance, operation that battery pack can be made permanently effective.
Other feature and advantage of the embodiment of the present invention will illustrate in the following description, alternatively, Partial Feature and excellent Point can deduce from specification or unambiguously determine or the above-mentioned technology by implementing the embodiment of the present invention can obtain Know.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, better embodiment cited below particularly, and match Attached drawing appended by conjunction, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structure diagram from control module provided in an embodiment of the present invention；
Fig. 2 is another structure diagram from control module provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of battery management system provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of battery management method provided in an embodiment of the present invention.
Icon：
100- from control module；102- power circuits；104- single chip circuits；106- telecommunication circuits；108- voltage acquisitions electricity Road；110- temperature collection circuits；112- active equalization circuits；200- from control module；202- power circuits；204- monolithics are electromechanical Road；206- telecommunication circuits；208- voltage collection circuits；210- temperature collection circuits；212- active equalization circuits；214- plug-in units electricity Road；31a- from control module；31b- from control module；31n- from control module.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with attached drawing to the present invention Technical solution be clearly and completely described, it is clear that described embodiment be part of the embodiment of the present invention rather than Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
The power battery pack poor-performing of electric vehicle at present, it is provided in an embodiment of the present invention a kind of from control mould based on this Block and battery management system can be applied to the battery management system and other battery management units of electric vehicle.
For ease of understanding the present embodiment, first to a kind of detailed from control module progress disclosed in the embodiment of the present invention It is thin to introduce.
A kind of structure diagram from control module shown in Figure 1 should be set to the battery of electric vehicle from control module Management system；It should include power circuit 102, single chip circuit 104, telecommunication circuit 106, voltage collection circuit from control module 100 108th, temperature collection circuit 110, active equalization circuit 112；Single chip circuit respectively with telecommunication circuit, voltage collection circuit, temperature Degree Acquisition Circuit is connected with active equalization circuit；Telecommunication circuit passes through CAN (Controller Area Network, controller area Domain network) primary module of bus and battery management system connects.
Above-mentioned power circuit is used to power；Specifically, which includes transformer, the voltage that external power supply is provided It is converted to from the voltage needed for control module each section；Generally using the higher isolating transformer of sexual valence.
Above-mentioned voltage collection circuit is connected by voltage sensor with the power battery of power battery pack, for acquiring power The voltage of battery, and collected voltage data is transmitted to single chip circuit；Voltage collection circuit includes 27 voltage monitorings Point；Under normal conditions, each voltage monitoring point corresponds to a single battery；Temperature collection circuit is acquired dynamic by temperature sensor The temperature of power battery, and collected temperature data is transmitted to single chip circuit；Temperature collection circuit includes 8 temperature monitorings Point；Under normal conditions, temperature monitoring point is set on the shell of power battery pack；Single chip circuit is used for will by telecommunication circuit Voltage data and temperature data are sent to primary module.
During concrete application, the mark letter of corresponding single battery can also be carried in the voltage data and temperature data Breath, primary module monitors the voltage data and temperature data that receive one by one, when data are abnormal, for example, a certain The voltage of single battery is higher than the temperature threshold of setting less than the voltage threshold or temperature of setting, then generates warning message, the report Alert information carries the mark of single battery, to provide maintenance personal's on-call maintenance or replace battery.
Voltage data and temperature data are sent to primary module, and receive main mould by above-mentioned single chip circuit by telecommunication circuit The order that block is sent controls active equalization circuit, so that power battery reaches equilibrium state；Specifically, single chip circuit includes Program debugging unit and single chip control unit；Program debugging unit is used to receive the control instruction of host computer, with to microcontroller The program of control unit is into edlin.
Under normal conditions, single chip circuit further includes AD (Analog to Aigital, analog signal turn digital signal) and turns Parallel operation；The AD converter is connect respectively with voltage collection circuit and temperature collection circuit；AD converter is used for voltage acquisition electricity The analog signal of the output of road and temperature collection circuit is converted to digital signal.Voltage collection circuit and temperature collection circuit output Time Continuous, amplitude also continuous analog quantity, and the data of SCM program processing should be time discrete, amplitude also discrete number Therefore word signal, would generally integrate AD converter in single chip circuit.
Above-mentioned active equalization circuit is connect respectively with single chip circuit and power battery pack；For being controlled by single chip circuit So that power battery reaches equilibrium state.The active equalization circuit uses the working method of two-way active equalization, becomes including equilibrium Depressor and equilibrium selection switch；Equilibrium selection is switched to be corresponded with power battery；Single chip circuit control equilibrium selection switch, By equalizer transformer so that each power battery reaches equilibrium state.
Wherein, two-way active equalization working method is the battery discharge higher to voltage, and the energy of releasing is used for voltage Relatively low monomer charges, to achieve the purpose that energy transfer, so as to reduce the loss of battery capacity.It can profit in application This purpose is realized with equalizer transformer, specifically, single chip circuit is by the voltage number based on voltage and temperature monitoring point After the order that primary module receives primary module is sent to by telecommunication circuit with temperature data, control equilibrium selection switch selection, Based on the equalizer transformer battery discharge higher to voltage, the battery relatively low to voltage charging.Equalizer transformer can be flyback Formula transformer, the winding being attempted by using it on battery by the conversion in electric field and magnetic field, are realized when certain economize on electricity cell voltage of monitoring When excessively high, above-mentioned winding can will be in the energy transfer of the battery to entire battery pack；It is above-mentioned when certain batteries brownout Winding can will be in the energy transfer of battery pack to the battery；Such that battery reaches equilibrium state.
An embodiment of the present invention provides one kind from control module and battery management system, from control mould voltage collection circuit in the block It is connected by voltage sensor with the power battery of power battery pack, the voltage data of the power battery of acquisition is transmitted to monolithic Electromechanical road；The voltage collection circuit includes 27 voltage monitoring points；Temperature collection circuit is acquired described dynamic by temperature sensor The temperature of power battery, the temperature collection circuit include 8 monitoring points；And temperature data is transmitted to single chip circuit, the monolithic Voltage data and temperature data are sent to primary module by electromechanical road by telecommunication circuit again；Active equalization circuit and single chip circuit It is connected, is controlled by single chip circuit so that power battery reaches equilibrium state.Which reduces the capacitance loss of battery, improves Battery performance, operation that battery pack can be made permanently effective.
The embodiment of the present invention additionally provides another kind from control module, is realized on the basis of the module is shown in Fig. 1.Referring to figure Another kind shown in 2 should include power circuit 202 from control module 200, single chip circuit 204, lead to from control modular structure schematic diagram Believe circuit 206, voltage collection circuit 208, temperature collection circuit 210, active equalization circuit 212；Insert circuitry 214；Microcontroller Circuit is connect respectively with telecommunication circuit, voltage collection circuit, temperature collection circuit and active equalization circuit；Telecommunication circuit passes through The primary module of CAN bus and battery management system connects；Plug connector circuit respectively with voltage collection circuit, temperature collection circuit and Active equalization circuit connects；Voltage collection circuit, temperature collection circuit and active equalization circuit pass through plug connector circuit and power Battery connects.
Further, it is above-mentioned to further include housing from control module；The housing is cuboid；The material of the housing includes aluminium Alloy.In practice, the trepanning on housing is needed, and plug connector is installed；The connector is connect with plug connector circuit.
A kind of structure diagram of battery management system shown in Figure 3, the battery management system are applied to electronic vapour Vehicle；The battery management system include a primary module 30 and it is multiple it is above-mentioned from control module (31a, 31b ..., 31n)；Primary module leads to CAN bus is crossed to connect from control module with multiple.
Specifically, it is multiple that management is grouped to the power battery pack of electric vehicle respectively from control module, to power battery The voltage and temperature of the power battery of group are monitored, and monitoring data are fed back to primary module by CAN bus；The primary module The working condition of battery is adjusted according to the monitoring data.
Further, above-mentioned primary module also passes through CAN bus and whole-control system, charger, electric machine controller respectively And the connections such as instrument；The function of above-mentioned primary module mainly includes system self detection, battery pack information, battery capacity estimation, pacifies Full guard and alarm function, battery status arbitration functions, data recording function and system parameter setting function etc..
In above-mentioned each 3 modules, using 32 high-performance CPU, System Expansion upgrading is convenient, and battery protection controls more It is accurate；Primary module is realized with respectively communicating between control module using high-speed CAN, electrical isolation between multichannel CAN center lines substantially carries High operation stability.
Further, which further includes power module, and power module is provided for entire battery management system Power supply.
Battery management system provided in an embodiment of the present invention, can be simultaneously to each single battery for connecting in battery pack Working condition is monitored, and any single battery prompts user to repair in time when breaking down, and the work for improving battery pack is steady It is qualitative.
A kind of flow chart of battery management method shown in Figure 4, this method are applied to above-mentioned battery management system, packet Include following steps：
Step S400 acquires the voltage signal and temperature signal of power battery；
Specifically, by obtaining the voltage data of single power battery from the voltage collection circuit of control module, pass through temperature Acquisition Circuit obtains the temperature data of the temperature monitoring point of power battery pack setting；Pass through communication using the microcontroller from control module Above-mentioned voltage data and temperature data are transmitted to primary module by circuit.
Step S402 judges the working condition of power battery according to voltage signal and temperature signal；
Specifically, according to preset normal working voltage range and temperature range and the voltage data of acquisition and temperature number According to judging the working condition of each power battery by primary module.
Step S404, the working condition of motivation of adjustment battery.
Specifically, according to the voltage condition of each single battery, life is sent to the microcontroller from control module by primary module It enables, by being switched from the single chip circuit control control equilibrium selection of control module, based on two-way active equalization mode, utilizes equilibrium The transformer battery higher to voltage discharges；The battery relatively low to voltage charges with the electricity for realizing each power battery Press consistent equilibrium state.
When the temperature of power battery pack is beyond the temperature range of normal work, alarm signal will be sent out, user is reminded to move Power battery pack is in abnormal condition, and stops using.
Battery management method provided in an embodiment of the present invention has identical with the battery management system that above-described embodiment provides Technical characteristic, so can also solve the technical issues of identical, reach identical technique effect.
The embodiment of the present invention provided from control module and battery management system computer program product, including storing The computer readable storage medium of program code, the instruction that said program code includes can be used for performing in previous methods embodiment The method, specific implementation can be found in embodiment of the method, and details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.
If the function is realized in the form of SFU software functional unit and is independent product sale or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially in other words The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be People's computer, server or network equipment etc.) perform all or part of the steps of the method according to each embodiment of the present invention. And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the invention, to illustrate the present invention Technical solution, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light It is readily conceivable that variation or equivalent replacement is carried out to which part technical characteristic；And these modifications, variation or replacement, do not make The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention Within the scope of.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.

Claims (10)

  1. It is 1. a kind of from control module, which is characterized in that the battery management system that electric vehicle is set to from control module, it is described from It controls module and includes power circuit, single chip circuit, telecommunication circuit, voltage collection circuit, temperature collection circuit and active equalization electricity Road；The single chip circuit respectively with the telecommunication circuit, the voltage collection circuit, the temperature collection circuit and the master Dynamic equalizing circuit connection；The telecommunication circuit is connect by CAN bus with the primary module of the battery management system；
    The power circuit is used to power；The voltage collection circuit passes through voltage sensor and each power electric of power battery pack Pond is connected, and for acquiring the voltage of the power battery, and collected voltage data is transmitted to the single chip circuit；Institute It states voltage collection circuit and includes 27 voltage monitoring points；The temperature collection circuit is used to acquire by temperature sensor described dynamic The temperature of power battery, and collected temperature data is transmitted to the single chip circuit；The temperature collection circuit includes 8 Temperature monitoring point；The active equalization circuit is connect respectively with the single chip circuit and each power battery, in institute Stating makes each power battery reach equilibrium state under the control of single chip circuit；The single chip circuit is used for by described logical The voltage data and the temperature data are sent to the primary module by letter circuit, and the single chip circuit is additionally operable to control institute Master control equalizing circuit is stated, so that each power battery reaches equilibrium state.
  2. It is 2. according to claim 1 from control module, which is characterized in that the active equalization circuit uses two-way active equalization Working method.
  3. 3. it is according to claim 2 from control module, which is characterized in that the active equalization circuit include equalizer transformer and Equilibrium selection switchs；The equilibrium selection switch is corresponded with the power battery；The single chip circuit control is described Weigh selecting switch, by the equalizer transformer so that each power battery reaches equilibrium state.
  4. It is 4. according to claim 1 from control module, which is characterized in that the voltage collection circuit includes voltage acquisition component It is switched with voltage acquisition；The voltage acquisition component sets 27 voltage monitoring points altogether；The voltage monitoring point and the voltage Acquisition switch corresponds；The single chip circuit controls the voltage acquisition switch, to control the work of each voltage monitoring point Make state.
  5. 5. it is according to claim 1 from control module, which is characterized in that the single chip circuit include program debugging unit and Single chip circuit control unit；Described program debugging unit is used to receive the control instruction of host computer, with to monolithic electromechanics The program of road control unit is into edlin.
  6. It is 6. according to claim 1 from control module, which is characterized in that the single chip circuit further includes AD converter；Institute AD converter is stated to connect with the voltage collection circuit and the temperature collection circuit respectively；The AD converter is used for by described in The analog signal of the output of voltage collection circuit and the temperature collection circuit is converted to digital signal.
  7. It is 7. according to claim 1 from control module, which is characterized in that described to further include plug connector circuit from control module；Institute Plug connector circuit is stated to connect with the voltage collection circuit, the temperature collection circuit and the active equalization circuit respectively；Institute It states voltage collection circuit, the temperature collection circuit and the active equalization circuit and passes through the plug connector circuit and the power Battery connects.
  8. It is 8. according to claim 7 from control module, which is characterized in that described to further include shell from control module；The shell For cuboid；The material of the housing includes aluminium alloy.
  9. 9. a kind of battery management system, which is characterized in that the battery management system is applied to electric vehicle；The battery management System includes a primary module and multiple claim 1-8 any one of them from control module；The primary module passes through CAN bus It is connect with the multiple from control module.
  10. 10. battery management system according to claim 9, which is characterized in that it is the multiple from control module respectively to electronic The power battery pack of automobile is grouped management, and the voltage and temperature of the power battery of power battery pack are monitored, will be supervised Measured data feeds back to the primary module by CAN bus；The primary module adjusts the work shape of battery according to the monitoring data State.
CN201810170739.5A 2018-02-28 2018-02-28 From control module and battery management system Pending CN108258344A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113964913A (en) * 2021-11-05 2022-01-21 许继集团有限公司 Self-adaptive voltage compensation sampling method and system

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CN204271704U (en) * 2014-12-18 2015-04-15 陕西赛雷博瑞新能源科技有限公司 Based on the batteries management system of CAN
CN106972580A (en) * 2017-04-28 2017-07-21 苏州博沃创新能源科技有限公司 A kind of active equalization system for electric automobile single power battery
CN206900191U (en) * 2017-07-03 2018-01-19 中能国盛动力电池技术（北京）股份公司 A kind of cell management system of electric automobile
CN208272059U (en) * 2018-02-28 2018-12-21 北京国能电池科技股份有限公司 From control module and battery management system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204271704U (en) * 2014-12-18 2015-04-15 陕西赛雷博瑞新能源科技有限公司 Based on the batteries management system of CAN
CN106972580A (en) * 2017-04-28 2017-07-21 苏州博沃创新能源科技有限公司 A kind of active equalization system for electric automobile single power battery
CN206900191U (en) * 2017-07-03 2018-01-19 中能国盛动力电池技术（北京）股份公司 A kind of cell management system of electric automobile
CN208272059U (en) * 2018-02-28 2018-12-21 北京国能电池科技股份有限公司 From control module and battery management system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113964913A (en) * 2021-11-05 2022-01-21 许继集团有限公司 Self-adaptive voltage compensation sampling method and system

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