CN107978810A - A kind of traction accumulator bag - Google Patents
A kind of traction accumulator bag Download PDFInfo
- Publication number
- CN107978810A CN107978810A CN201711278574.5A CN201711278574A CN107978810A CN 107978810 A CN107978810 A CN 107978810A CN 201711278574 A CN201711278574 A CN 201711278574A CN 107978810 A CN107978810 A CN 107978810A
- Authority
- CN
- China
- Prior art keywords
- battery unit
- battery
- operational amplifier
- traction accumulator
- accumulator bag
- 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.)
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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
- B60L58/20—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 having different nominal voltages
-
- 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
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Abstract
The invention discloses a kind of traction accumulator bag, including n battery unit, and each battery unit is connected in series by positive and negative anodes constitutes battery pack；Further include 1 operational amplifier of n and charge balancing circuit, each operational amplifier is configured to voltage follower, wherein n is at least 3, and wherein m-th of operational amplifier of 1 operational amplifier of n is by m-th of the battery unit and (m+1) a battery unit corresponding to n battery unit being connected in series, traction accumulator bag of the present invention in use every time can the discharge and recharge of maximum ground, improve the service life of battery pack.
Description
Technical field
The present invention relates to storage battery bag, it is more particularly related to be applied to electric automobile or motor vehicle driven by mixed power
Energy Management System in a kind of traction accumulator bag.
Background technology
Storage battery (Storage Battery) is a kind of device that chemical energy is directly translated into electric energy, is by rechargeable
The battery of electricity design, is realized by reversible chemical reaction and recharged, typically refer to lead-acid accumulator, it is one in battery
Kind, belong to secondary cell.Its operation principle：Internal active material is regenerated using exterior electric energy during charging, electric energy is stored up
Chemical energy is saved as, it is necessary to which chemical energy is converted to electric energy output again when discharging.Under normal circumstances, it uses and fills up spongy lead
Lead base grid (also known as checker) makees anode, and the lead base grid for filling up brown lead oxide makees cathode, and with density 1.26--1.33g/
The dilute sulfuric acid of mlg/ml makees electrolyte.For battery in electric discharge, metallic lead is anode, and oxidation reaction occurs, generates lead sulfate；Dioxy
It is cathode to change lead, and reduction reaction occurs, and generates lead sulfate.Battery when with charged with direct current, the two poles of the earth generate respectively elementary lead and
Brown lead oxide.After removing power supply, it returns to the state before electric discharge, constitutional chemistry battery again.
The traction battery bag of hybrid-electric car provides power and power supply for vehicle traction system and accessory.In order to meet electricity
Pressure and current requirements, traction battery are typically to be connected with multiple battery units by series connection with parallel combination.Run in vehicle
Period, based on operating condition traction accumulator include charging, discharge condition, the operating condition of internal combustion engine or regenerative braking come
Charge or discharge are carried out to traction battery group.The charged state of each battery unit in battery pack may be due to manufacturing process
The many factors such as difference, the change of battery life, battery temperature or battery technology and different, but battery life under normal circumstances
All than relatively low, battery temperature is excessive.
The content of the invention
The goal of the invention of the present invention, inventing a kind of traction accumulator bag can in use every time can maximum
Discharge and recharge, improves the service life of battery pack, and reduces the operating temperature of battery pack.
The present inventor rebalances each battery unit in battery pack using the mode of balancing of battery cell
Charged state and improve the work of battery pack.
In order to realize purpose and further advantage according to the present invention, there is provided a kind of traction accumulator bag, including：N electricity
Pool unit passes through the battery pack that is connected in series to form.The battery pack further includes the electric charge with least n-1 operational amplifier and puts down
Weigh circuit, and each operational amplifier is by as voltage-follower arrangement.N is at least 3, and wherein n-1 operational amplifier
M-th of operational amplifier is by m-th of the battery unit and (m+1) a battery list corresponding to n battery unit being connected in series
Member.
Traction accumulator bag of the present invention, wherein can further comprise n resistor being at least cascaded,
To form a string of resistors, and this wherein described string resistance device is connected in parallel with the battery pack to produce each n
The reference voltage of a battery unit.
Traction accumulator bag of the present invention, wherein the operational amplifier is inputted including Schmidt trigger, it is described
Operational amplifier is Differential Input operational amplifier.
Traction accumulator bag of the present invention, wherein the operational amplifier is configured as being based on m-th of battery
The negative circuit of the plus end of unit；The operational amplifier is configured as based on the plus end with m-th of battery unit
The non-reversed-phase circuit of associated reference voltage.
Traction accumulator bag of the present invention, wherein n secondary battery unit, each secondary battery unit have positive terminal
It is connected in series with negative terminal to form storage battery group；And it is configured to n-1 operational amplifier of voltage follower, wherein n-
The negative terminal of m-th of operational amplifier of 1 operational amplifier is connected to corresponding m-th of storage battery of n secondary battery unit
The anode of unit, and the plus end of m-th of operational amplifier is connected to (m+1) a storage battery list of n secondary battery unit
The plus end of member.
Traction accumulator bag of the present invention, wherein n resistor being at least cascaded is further included, to form one
String resistance device, and wherein described resistance string is connected in parallel with the storage battery group to produce the reference electricity of each battery unit
Pressure.
Traction accumulator bag of the present invention, wherein the operational amplifier is configured as being based on m-th of battery
The negative circuit of the plus end of unit.
The traction accumulator bag of the present invention, wherein the operational amplifier is configured as being based on and m-th of battery list
The non-reversed-phase circuit for the reference voltage that the plus end of member is associated.
Traction accumulator bag of the present invention, wherein the secondary battery unit is at least a rechargeable electricity
Pool unit.
Traction accumulator bag of the present invention, wherein storage battery bag include：N secondary battery unit being connected in series, with
Form battery pack；And charge balancing circuit, it includes at least n-1 operational amplifier and is configured to voltage follower, wherein n extremely
It is 3 less；The n resistor to link together, to form a string of resistors, and wherein described resistance string and the cell parallel
Connect to form the reference voltage of each battery unit.
The present invention includes at least following beneficial effect：
Traction accumulator bag of the present invention, producing the change of tolerance or operating condition in each charging or may put
Amplify the fine difference produced between single battery or battery pack in electricity circulation.In order to optimize battery operation, the present invention uses electricity
The electric charges of all batteries that pond balance system is come in equalization series chain extends battery life.Charge balancing is filled for power supply group
Electricity condition and the operation lifetime of power supply group play the role of very important.Charging system is configured to improve total charging electricity
Pressure is to compensate resistance, then weaker battery will be started to warm up and further deteriorated.Weaker battery by containing less electric charge, its
His battery will compensate relatively low electric charge.
Traction accumulator bag of the present invention, each battery unit serve as integrator.The appearance of any one unit of system
Amount change may result in the change increase of system operation mode.If the several battery units or battery of battery pack have relatively low
Voltage, electric current may discharge from several battery units or battery.Battery life is mainly reflected in the charge/discharge of battery
Number, more preferable cell voltage, which is adjusted, can improve lifetime of system.Gone here and there when the present invention passes through charging when in parallel and electric discharge
Connection, carrys out the effective service life for improving battery.
Traction accumulator bag of the present invention, the middle active cell balance battery unit under normal circumstances used it is slight
Overcharge causes the temperature of battery cell to raise, inventor by with the external circuit that each cell parallel is connected by excess charges
Discharged as thermal energy, active cell balance can be by the integral energy of battery from a single battery transfer to whole battery
Group, single battery is transferred to from whole battery pack, or from a single battery to another battery.In general, energy is from tool
There is the battery transfer of high charge state to the battery with low charged state.Similarly, electric charge can be transferred to low charging
The single battery of state.
Brief description of the drawings
Fig. 1 is the schematic diagram of transmission parts and the motor vehicle driven by mixed power of energy storage member.
Fig. 2 is an exemplary plot of traction battery bag.
Fig. 3 is the schematic diagram of charge balancing circuit.
Embodiment
Embodiment of the disclosure is described in the description.The disclosed embodiments are only example, and other are implemented
Example can take various and alternative form.Numeral is not necessarily to scale；Some functions may be exaggerated or minimized, to show spy
Determine the details of component.Therefore, disclosed specific structure and function detail are not necessarily to be construed as restricted, but only as teaching
The representative basis of the various Application Examples of those skilled in the art.
The present invention, which discloses, proposes a kind of traction accumulator bag, includes the storage battery of the secondary battery unit composition of n series connection
Group and battery balance system, wherein each battery equilibrium element autonomous operation associated with secondary battery unit and from adjacent electricity
Pool unit obtains power.
First embodiment, in a charge balancing circuit, each operational amplifier and 2 battery units or multiple electricity
Pool unit associates.The system of n unit or unit group just needs n-1 operational amplifier.This each operational amplifier is by two
A adjacent unit or the power supply of unit group.Each operational amplifier is associated with 4 unit groups or unit, n unit or unit
The system of group needs ((n/2) -1) operational amplifier.
Traction accumulator bag shown in Fig. 1 10 is powered to vehicular electrical equipment and traction electric machine.Traction accumulator bag 10 is usual
High pressure is provided and supplies electricity to DC/DC current transformers 12.Traction electric machine 14 is electrically connected to one or more electric power electronic modules 13.One or more
A contactor can isolate traction battery 10 with power electronics modules 13 when opening, and when closed by traction accumulator
Bag 10 is connected to power electronics modules 13.Power electronics modules 13 are connected to motor 14, and provide in traction accumulator bag 10
The ability of bi-directional energy between motor 14.
In addition to providing energy for the traction electric machine of vehicle, traction accumulator bag 10 can be other electric systems of vehicle
System provides power supply.The high pressure DC outputs of traction battery 10 are converted into and other loads by storage battery bag by DC/DC current transformers 12
The low voltage DC power supplies needed.Electrical load 11 can also be directly connected to, power supply is provided to the equipment of high pressure is needed.Such as：It is high
Pressure equipment has other loads of compressor, electric heater.Low-pressure system has booster battery, vehicle electronic device etc..
Wherein traction accumulator bag 10 can be charged by external power supply 20.External power supply 20 is connected to the power supply for receiving electric power
On socket, electric vehicle supply equipment 21 is connected to, is connected on traction accumulator bag 10, is charged to traction accumulator.Outside
Portion's power supply 20 can provide DC or AC electric power to vehicle supply equipment 21, and vehicle supply equipment 21, which has, to be used to be inserted into filling for vehicle
The charge connector of electric port 22.Charging port 22 can be configured as transmitting any class of electric power from vehicle supply equipment 21
The port charging port 22 of type may be electrically connected to vehicle power supply modular converter 32.Vehicle power supply modular converter 32 can adjust from
The electric power that vehicle supply equipment 21 provides, to provide the voltage and current to match with traction accumulator bag.
Electrical load 11 includes battery cooling fan, electric air-conditioning unit, battery cooler, electric heater, and cooling pump is cold
But fan, window defrosting unit, electric boosting steering system, AC power inverters and internal combustion engine water pump etc..
Various assemblies discussed above can have one or more associated controllers to control and monitor component
Operation.Controller (can be passed via universal serial bus for example, controller LAN (CAN bus) or Ethernet are controlled signal
It is defeated.It can coordinate the operation of various parts by system controller 30.
Traction battery bag 10 can be made of various chemical formulations.Typical battery pack chemical substance can be plumbic acid, nickel-
Metal hydride (NIMH) or lithium ion.Fig. 2 show one embodiment of traction battery bag, passes through for N number of battery unit 52
The battery pack of composition is connected in series, reconnects other equipment composition traction battery bag 10.Battery pack 10 can also be any by other
Quantity battery unit is composed by connected in series or in parallel.Battery management system can have one or more controls
Device, such as the energy content of battery control module 56 of 10 performance of monitoring and control traction battery bag.Energy content of battery control module 56 can be with
The characteristic for being used to monitor multiple battery packs including sensor and circuit, such as：For bag current sensor 58,60 He of voltage sensor
Temperature sensor 52.
Energy content of battery control module 56 can also measure and monitor electricity in addition to the characteristic of battery pack is monitored and controlled
The characteristic of pool unit.For example, the terminal voltage of 52 each battery unit, electric current and temperature can be measured.Battery management system
Battery unit characteristic can be measured using sensor assembly 64.Sensor assembly 64 can be measured including sensor and circuit
The characteristic of one or more battery unit 52.Battery management system can utilize multiple sensor assemblies 64, such as battery monitoring
Device integrates the circuit module for measuring all 52 characteristics of battery unit.Measured value can be transmitted to by each sensor assembly 64
Energy content of battery control module 56, for further handling and coordinating.Sensor assembly 54 can be by the letter of analog or digital form
Number it is transmitted to energy content of battery control module 56.In certain embodiments, the function of sensor assembly 64 can be with internal combustion to electricity
Pond energy control module 56.That is, sensor assembly hardware can be integrated into the circuit in energy content of battery control module 56
In, original signal is handled by energy content of battery control module 56.
Energy content of battery control module 56 can include the circuit to connect with one or more contactors 15.Traction battery 10
Cathode and negative terminal can be protected with contactor 15.
When in battery unit 52 or battery pack 10 not enough power supply, it is necessary to when charging.The remaining electricity of traction battery bag can be exported
Measure to notify driver.Battery pack charging also can be by controlling electronic or hybrid electric vehicle to operate.Battery pack need to charge shape
The calculating of state can be realized by various methods.It is to calculate battery pack electricity that battery pack, which needs a kind of possible method of charged state,
Flow the integration with the time.Battery pack need charged state can also other specification calculate and realize.Battery voltage measurement, battery current
Measurement and battery and component temperature measurement provide calculating data.
Energy content of battery control system 56 is powered to work at any time.Including a timer, in order to carry out timing as per the schedule
Wakeup schedule works.Energy content of battery control system 56 can be waken up by waking up timer, so as to perform predetermined function.Battery
Energy management system 56 further includes non-volatile memory, and number can be stored automatically when energy content of battery control system 56 powers off
According to.Non-volatile data storage can include band Electrically Erasable Programmable Read-Only Memory (EEPROM) or non-volatile random
Access memory (NVRAM).Nonvolatile memory further includes the flash memory of microcontroller.
When operating vehicle, the fuel economy of higher can be produced by energetically changing the way to manage of battery charging state
Or farther vehicle electric advance distance.Vehicle control device must carry out following repair in high charge state and low charged state
Change.In low battery charging state, controller can check nearest operation data, and determine to improve by engine charging
The electricity of battery, longer electric promotion pattern operation can be provided in tail-off by so doing.On the contrary, in high battery capacity
During charging, controller can check nearest operation data and other data (position, temperature etc.), to be pushed away by electric drive mode
Into the output of reduction engine or auxiliary electrical load are charged to reduce battery.This is done to provide the battery capacity of higher,
Energy supplement is maximized during regenerative braking (such as high deceleration or descending grade).
Fig. 3 is the schematic diagram for showing charge balancing circuit.The circuit is that battery unit is substantially non-thread on one side
Property integrator.The adjusting of integrator can be come by operational amplifier, comparator, Differential Input operational amplifier or equivalent circuit
Realize.Fig. 3 show the battery pack of one group of 5 batteries series connection.Battery (310,312,314,316 and 318) by charge normal/
Discharge circuit is connected in series.The figure shows single battery unit (310,312,314,316 and 318), but it can also be
Stacks of cells, ultracapacitor or other electrical storage devices.For example, battery 310 can be single battery unit or be connected in parallel
Multiple battery units.Connection can be direct or indirect connection.
As shown in figure 3, a divider is connected in parallel on the both ends 330 and 332 of battery pack in figure.Divider can make resistance,
Solid-state devices, semiconductor or other similar structures.In figure 3, resistor (320,322,324,326 and 328) be considered as with
Charge normal/discharge circuit is connected in parallel.For example, resistance can be 100K Ohmic resistances.Operational amplifier (302,304,306
With 308) be connected to battery unit (310,312,314,316 and 318) between so that each operational amplifier is based on each battery
State preferably adjust the voltage between adjacent cells.If for example, during charging, unit 312 has big resistance,
Situation in simple series circuit, unit 312 receive the voltage of larger proportion；And operational amplifier 302 and 304 is adjusted
Voltage at each terminal of unit 312, then battery 312 will receive less voltage.If the temperature of a unit becomes
Change or occur some other events to change the voltage of a unit, then another unit may start to receive relatively low voltage and
The relatively low voltage of another battery may be increased.Similarly, during electric discharge, if a battery cannot be relative to other
Battery exports equal voltage share, then other batteries can make up difference.Output is using unit as foundation.
The electric and operation characteristic of operational amplifier changes according to applicable cases, and the electrical characteristic of each battery,
Including Current Voltage, operating voltage range, battery technology and capacity.For example, the small portable apparatus that can be powered on indefinite duration
There may be tightened up work leakage current requirement, or even several milliamperes of leakage current can produce difference.Equally, can locate
The large-sized battery pack of reason high current (for example, more than 100 amperes) may need the operational amplifier of bigger come during transmitting operation
Required appropriate electric current.It is operational amplifier, unit or unit associating power supply to be actually due to the voltage on each unit, institute
Very small voltage can be accommodated.Similarly, for operational amplifier demand voltage than two adjacent cells voltage
The battery technology of bigger, can be by changing circuit so that 318) each battery unit (310,312,314,316 or can be
The multiple units being connected in series or series connection and parallel combination.The ratio of resistance (320,322,324,326 and 328) determines voltage
How will accurately to be controlled；Need precision resistance or using precision voltage divider.In addition, the ratio of divider, such as resistor
(320,322,324,326 and 328) can use the unit of compensation customization or mixing.For example, power supply module can include 4 electricity
Pond, the voltage of each battery is 1.2V, and single battery can be connected in series, and cell voltage 4.8V, can select voltage to distribute
To adapt to the design of power supply group.
Though it is readily apparent that those skilled in the art can be from various structures according to the embodiment of the present invention
Obtain the various effects not yet referred directly to according to unpainful each embodiment.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With.It can be applied to various suitable the field of the invention completely., can be easily for those skilled in the art
Realize other modification.Therefore it is of the invention and unlimited under the universal limited without departing substantially from claim and equivalency range
In specific details and shown here as the legend with description.
Claims (10)
- A kind of 1. traction accumulator bag, it is characterised in that including：The battery pack connected by n battery cells in series；And charge balancing circuit, it includes at least n-1 operational amplifier, and each operational amplifier is configured to voltage follow Device, wherein n are at least 3, and m-th of operational amplifier of wherein n-1 operational amplifier is by corresponding to the n being connected in series M-th of the battery unit and (m+1) a battery unit of battery unit.
- 2. traction accumulator bag according to claim 1, it is characterised in that further comprise what is be at least cascaded N resistor, to form a string of resistors, and this wherein described string resistance device is connected in parallel with the battery pack to produce The reference voltage of each n battery unit.
- 3. traction accumulator bag according to claim 1, it is characterised in that wherein described operational amplifier includes Schmidt Trigger inputs, and the operational amplifier is Differential Input operational amplifier.
- 4. traction accumulator bag according to claim 1, it is characterised in that：The operational amplifier is configured as the negative circuit of the plus end based on m-th of battery unit；The operational amplifier is configured as based on the non-of the reference voltage associated with the plus end of m-th of battery unit Negative circuit.
- 5. traction accumulator bag according to claim 1, it is characterised in thatThere is positive terminal and negative terminal to be connected in series to form electric power storage for wherein n secondary battery unit, each secondary battery unit Pond group；And n-1 operational amplifier of voltage follower is configured to, m-th of operation amplifier of wherein n-1 operational amplifier The negative terminal of device is connected to the anode of corresponding m-th of secondary battery unit of n secondary battery unit, and m-th of operation amplifier The plus end of device is connected to the plus end of (m+1) a secondary battery unit of n secondary battery unit.
- 6. traction accumulator bag according to claim 5, it is characterised in that wherein further include the n being at least cascaded A resistor, to form a string of resistors, and wherein described resistance string is connected in parallel with the storage battery group to produce each The reference voltage of battery unit.
- 7. traction accumulator bag according to claim 6, it is characterised in that wherein described operational amplifier is configured as base In the negative circuit of the plus end of m-th of battery unit.
- 8. traction accumulator bag according to claim 6, it is characterised in that wherein described operational amplifier is configured as base In the non-reversed-phase circuit of the reference voltage associated with the plus end of m-th of battery unit.
- 9. traction accumulator bag according to claim 5, it is characterised in that：Wherein described secondary battery unit is at least One rechargeable battery unit.
- 10. traction accumulator bag according to claim 1, it is characterised in that storage battery bag includes：N secondary battery unit being connected in series, to form battery pack；And charge balancing circuit, it includes at least n-1 operational amplifier and is configured to voltage follower, and wherein n is at least 3； The n resistor to link together, to form a string of resistors, and wherein described resistance string be connected with the cell parallel with Form the reference voltage of each battery unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711278574.5A CN107978810A (en) | 2017-12-06 | 2017-12-06 | A kind of traction accumulator bag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711278574.5A CN107978810A (en) | 2017-12-06 | 2017-12-06 | A kind of traction accumulator bag |
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| CN107978810A true CN107978810A (en) | 2018-05-01 |
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| CN201711278574.5A Pending CN107978810A (en) | 2017-12-06 | 2017-12-06 | A kind of traction accumulator bag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224175A (en) * | 2018-11-23 | 2020-06-02 | 硕天科技股份有限公司 | Battery management system |
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| CN104170228A (en) * | 2012-02-13 | 2014-11-26 | 密克罗奇普技术公司 | Dual mode boost regulator |
| CN202522624U (en) * | 2012-03-19 | 2012-11-07 | 上海利思电气有限公司 | Data acquisition device used for electric energy monitoring |
| CN106887882A (en) * | 2015-12-11 | 2017-06-23 | 福特全球技术公司 | Battery charge equalizing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224175A (en) * | 2018-11-23 | 2020-06-02 | 硕天科技股份有限公司 | Battery management system |
| CN111224175B (en) * | 2018-11-23 | 2021-10-01 | 硕天科技股份有限公司 | Battery management system |
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