CN106602664A - Battery pack with dynamically-adjustable connection topology and implementation method thereof - Google Patents
Battery pack with dynamically-adjustable connection topology and implementation method thereof Download PDFInfo
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- CN106602664A CN106602664A CN201710008152.XA CN201710008152A CN106602664A CN 106602664 A CN106602664 A CN 106602664A CN 201710008152 A CN201710008152 A CN 201710008152A CN 106602664 A CN106602664 A CN 106602664A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 70
- 239000000178 monomer Substances 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
Classifications
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- 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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a battery pack with dynamically-adjustable connection topology and an implementation method thereof. The battery pack comprises a battery core group consisting of a plurality of battery monomers and a battery management system, wherein the battery management system comprises a battery measuring-controlling module, a balance circuit and a switch matrix; the switch matrix is connected with two poles of the battery monomers; the battery measuring-controlling module is used for monitoring current, voltage and temperature information of the battery monomers, and transmitting the monitored current, voltage and temperature information to the battery management system; the switch matrix is used for adjustably connecting the battery monomers of which the current, the voltages and the temperatures are approximate into a string or a group, and connecting the battery monomers of which the current, the voltages and the temperatures vary greatly into a string or a group, and the strings or groups are connected to the balance circuit; and the forms of connecting the battery monomers into the group comprise a form of connecting in series firstly and then in parallel, a form of connecting in parallel firstly and then in series and a form of alternatively connecting in series and in parallel. Through adoption of the battery pack and the implementation method thereof, the battery monomers which are approximate can be connected into the string or the group, so that a charge state can be estimated conveniently. Only the battery monomers which vary greatly are balanced, so that the use of a balance device is reduced, and energy consumption is lowered.
Description
Technical field
The present invention relates to field of batteries, more particularly to a kind of to connect the dynamic adjustable set of cells of topology and its realization side
Method.
Background technology
The drawbacks of energy crisis, environmental pollution are seriously gasoline cars fully demonstrates, therefore electric automobile gradually starts popularization,
And power battery technology restricts always the development of electric automobile.Therefore, give full play to the performance of cell and improve set of cells
Service life just be always batteries of electric automobile management technological core.
State-of-charge estimation and the electric quantity balancing of batteries of electric automobile are the key technologies of electric automobile, and state-of-charge is estimated
It is accurate, more accurately information can be provided for electric vehicle driver, bring more preferable driving experience to driver；Electricity is equal
Weighing apparatus can make the electricity of battery in battery pack monomer reach unanimity, so as to preferably play the performance of battery cell.
At present, typically all using fixed connected mode, battery cell is once loaded into battery to the set of cells of electric automobile
Group, its position in set of cells has just been fixed, it is desirable to which rearranging battery needs to adopt artificial means by battery permutatation.
With the use of set of cells, the discordance of the well-graded battery cell of script can become big, the estimation difficulty increase of state-of-charge.
Simultaneously for battery balanced, each battery cell will be linked in equalizing system, make equalizing circuit more complicated.
The content of the invention
The main object of the present invention is to provide a kind of adjustable estimation for making state-of-charge more accurately and equalizing circuit is simpler
The connection dynamic adjustable set of cells of topology.
The present invention proposes a kind of dynamic adjustable set of cells of connection topology, including one or more are arranged by multiple battery cells
The battery core group of row composition, connect in one or more battery core groups the switch matrix of battery cell and connect one or more cubicle switchboards
The battery management system of battle array；Battery management system includes battery control module and equalizing circuit；Battery control module monitors battery
The electric current of monomer, voltage and temperature information；Battery management system monitored according to battery control module the battery cell electric current,
The electric current, voltage and the temperature that obtain setting quantity be immediate and electric current, voltage and temperature by comparing for voltage and temperature information
The battery cell for differing greatly；According to the quantity of setting, the closure of the respective switch of controlling switch matrix with disconnect, by electric current,
The battery cell of voltage and temperature close is linked to be string or group, and by the larger battery cell of its aftercurrent, voltage and temperature contrast
It is linked to be string or group is connected into equalizing circuit.
Further, battery control module includes voltage sensor, temperature sensor and high precision electric current transducer.
Further, switch matrix is provided with one or more；When switch matrix is multiple, multiple switch matrix connects respectively
Connect battery management system.
Further, also including detection switch；Detection switch is closed when receiving open signal, and battery management system is according to electricity
The electric current of pond control module monitoring battery cell, voltage and temperature information by compare the electric current for obtaining setting quantity, voltage and
Temperature is immediate and the larger battery cell of electric current, voltage and temperature contrast；Battery management system starts the number according to setting
Amount, the closure of the respective switch of controlling switch matrix with disconnect, by the battery cell of electric current, voltage and temperature close be linked to be string or
Group；And by the larger battery cell of its aftercurrent, voltage and temperature contrast be linked to be string or group be connected into equalizing circuit；Battery management system
System sends cut-off signal to detection switch after the control to switch matrix is completed, and detection switch received and disconnected after cut-off signal.
Further, battery cell connects series connection and connection in series-parallel after in parallel after groups of form includes first connecting, first parallel connection and wears
Insert and combine；Connection in series-parallel interts the battery cell for carrying parallel connection when combining in parallel after as first series connection in series connection, or, it is first in parallel
There is battery cell in parallel with the battery cell of bunchiness when connecting afterwards.
Present invention additionally comprises the implementation method of the dynamic adjustable set of cells of connection topology, the dynamic adjustable battery of connection topology
Group, including one or more rearranged by multiple battery cells battery core group, connect battery list in one or more battery core groups
The switch matrix of body and the battery management system for connecting one or more switch matrix；Battery management system includes battery observing and controlling mould
Block and equalizing circuit；
The implementation method of the dynamic adjustable set of cells of connection topology comprises the steps：
Battery management system monitors electric current, voltage and the temperature information of battery cell according to battery control module by comparing
Obtain setting the larger battery of the electric current of quantity, voltage and the immediate battery cell of temperature and electric current, voltage and temperature contrast
Monomer；The closure of the respective switch of battery management system controlling switch matrix and disconnection, will set electric current, voltage and the temperature of quantity
The close battery cell of degree is linked to be string or group, and the larger battery cell of its aftercurrent, voltage and temperature contrast is linked to be into string or group
It is connected into equalizing circuit；Battery cell connects series connection and the interspersed knot of connection in series-parallel after in parallel after groups of form includes first connecting, first parallel connection
Close.
Further, battery control module includes voltage sensor, temperature sensor and high precision electric current transducer.
Further, switch matrix is provided with one or more；When switch matrix is multiple, multiple switch matrix connects respectively
Connect battery management system.
Further, connecting the dynamic adjustable set of cells of topology also includes detection switch；Detection switch receives open signal
When close, battery management system monitors the electric current of battery cell, voltage and temperature information by comparing according to battery control module
Obtain the battery cell for setting the electric current of quantity, voltage and temperature is immediate and electric current, voltage and temperature contrast are larger；Battery
Management system starts the quantity according to setting, closure and the disconnection of the respective switch of controlling switch matrix, by electric current, voltage and temperature
The close battery cell of degree is linked to be string or group, and by the larger battery cell of its aftercurrent, voltage and temperature contrast be linked to be string or
Group is connected into equalizing circuit；Battery management system sends cut-off signal to detection switch, inspection after the control to switch matrix is completed
Slowdown monitoring switch received and disconnected after cut-off signal.
Further, battery cell connects series connection and connection in series-parallel after in parallel after groups of form includes first connecting, first parallel connection and wears
Insert and combine；Connection in series-parallel interts the battery cell for carrying parallel connection when combining in parallel after as first series connection in series connection, or, it is first in parallel
There is battery cell in parallel with the battery cell of bunchiness when connecting afterwards.
The present invention is by battery management system controlling switch matrix, the battery cell that capacity, internal resistance, voltage can be made close
Bunchiness or in groups, is easy to choose representational some battery cells in set of cells, consequently facilitating the estimation of state-of-charge, charged
The estimation of state is more accurate；The larger battery cell bunchiness of remaining capacity, internal resistance, voltage difference or in groups, and by battery
Equalizing circuit in management system makes it reach unanimity, and only larger to characteristic difference battery cell carries out equilibrium, reduces
The use of weighing apparatus part, reduces energy expenditure, simplifies equalizing circuit, can preferably play the performance of battery cell.
Description of the drawings
Fig. 1 is battery management system, cubicle switchboard in a kind of embodiment of the dynamic adjustable set of cells of present invention connection topology
The annexation schematic diagram of battle array and set of cells；
Fig. 2 is the operation principle schematic diagram of the dynamic adjustable set of cells of present invention connection topology
The step of Fig. 3 is the implementation method of present invention connection topology dynamic adjustable set of cells schematic flow sheet.
Fig. 4 is battery management system, switch in the dynamic adjustable set of cells another embodiment of present invention connection topology
The annexation schematic diagram of matrix and set of cells.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
With reference to Fig. 1-2, the dynamic adjustable set of cells of one kind connection topology, including two by the arrangement group of multiple battery cells 3
Into battery core group 4 and battery management system 1, battery management system 1 includes battery control module 11 and equalizing circuit 12, also includes
One switch matrix 2；Switch matrix 2 connects the two poles of the earth of battery cell 3 in two battery core groups 4, and battery core group 4 is by multiple battery cells
3 rearrange.Switch matrix 2 is controlled by battery management system 1；Battery control module 11 monitors electric current, the voltage of battery cell 3
Battery management system 1 is detected and is sent to temperature information；Switch matrix 2 according to setting quantity will be after comparing really
Fixed electric current, voltage and the immediate battery cell 3 of temperature are linked to be string or group；Meanwhile, by remaining electric current, voltage and temperature difference
Different larger battery cell 3 is linked to be string or group is connected into equalizing circuit 12.By the controlling switch matrix 2 of battery management system 1, can be with
The close bunchiness of battery cell 3 of capacity, internal resistance, voltage or in groups is made, is easy to choose representational some batteries in set of cells
Monomer 3, consequently facilitating the estimation of state-of-charge, the estimation of state-of-charge is more accurate, when the dynamic adjustable set of cells of connection topology
During on automobile, client drives experience more preferably；The larger bunchiness of battery cell 3 of remaining capacity, internal resistance, voltage difference or into
Group, and make it reach unanimity by the equalizing circuit 12 in battery management system 1, only larger to characteristic difference battery cell 3
Equilibrium is carried out, the use of equalizing device is reduced, energy expenditure is reduced, equalizing circuit 12 is simplified, can preferably be played
The performance of battery cell 3.
Battery cell 3 connects groups of form and includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection.Electricity
Pond monomer 3 connects groups of form and includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection；The interspersed knot of connection in series-parallel
With battery cell 3 in parallel in series connection when closing in parallel after as first connecting, or, there is battery cell when formerly connecting after parallel connection
3 is in parallel with the battery cell 3 of bunchiness.
For example, 100 battery cells 3 can conspire to create it is in parallel after 10 strings, or per 4 parallel connections after be connected into 1 string, then or
Parallel connection after 5 strings is connected into after per 4 parallel connections, also or in bunchiness after parallel connection, parallel connection, etc. after first series connection is provided with parallel connection many
The connected mode of the form of kind.The output power of whole set of cells can be adjusted.
In certain embodiments, so that the quantity of battery cell 3 is for 100 as an example, switch matrix 2 will be through comparing according to setting
The immediate 30-60 battery cell 3 of electric current, voltage and temperature for determining afterwards is linked to be string or group；Meanwhile, by remaining electric current,
The larger battery cell 3 of voltage and temperature contrast is linked to be string or group is connected into equalizing circuit 12.Can be by the battery list being closer to
Detect based on body 3, the state-of-charge for estimating the percentage of batteries monomer 3 that can be accurate, plus remaining be connected into
The battery cell 3 of equalizing circuit 12, upper equalizing circuit 12 makes it reach unanimity, only larger to the characteristic difference electricity of equalizing circuit 12
Pond monomer 3 carries out and carries out weighing apparatus state-of-charge, the state-of-charge of set of cells can be estimated preferably, thus, it is possible to more
The performance of battery cell 3 is played well.
So that the quantity of battery cell 3 is for 50 as an example, electric current, electricity that switch matrix 2 will determine according to setting after relatively
Pressure and the immediate 10-30 battery cell 3 of temperature are linked to be string or group；Meanwhile, by remaining electric current, voltage and temperature contrast compared with
Big battery cell 3 is linked to be string or group is connected into equalizing circuit 12.
It is easy to choose representational some battery cells 3 in set of cells, consequently facilitating the estimation of state-of-charge, charged shape
The estimation of state is more accurate, and when the dynamic adjustable set of cells of connection topology is used on automobile, client drives experience more preferably；It is remaining
The larger bunchiness of battery cell 3 of capacity, internal resistance, voltage difference or in groups, and by the equalizing circuit 12 in battery management system 1
It is set to reach unanimity, only larger to characteristic difference battery cell 3 carries out equilibrium, reduces the use of equalizing device, reduces
Energy expenditure, simplifies equalizing circuit 12, can preferably play the performance of battery cell 3.
Battery control module 11 includes voltage sensor, temperature sensor and high precision electric current transducer.Voltage sensor,
Temperature sensor and high precision electric current transducer detect respectively voltage, temperature and the electric current of set of cells, can by monitoring voltage,
Temperature and electric current judge the state of set of cells.
Switch matrix 2 is one；Switch matrix connects battery management system.Switch matrix 2 can be according to battery cell 3
Quantity is flexibly used, and switch matrix 2 controlled can make the closure of corresponding switch and disconnect, so as to realize any cell
Combination.
Switch matrix 2 (switching network) is the important component part of Auto-Test System, is responsible for control signal flow direction
Task, is the key for realizing the Interface design of test automatically.In ATE, switch is generally divided into power switch, letter
Number switch (matrix switch), microwave switch.Wherein power switch is generally used to switch over the power supply of system, matrix switch and
Microwave switch is mainly used to do signal switching, according to the measurement demand of actual UUT, the test resource of flexible dispensing system.At present,
Signal switching system in ATE is generally made up of two or more matrix switches, mutual according to various interface standards
Connection, forms the flexible switching from test resource to UUT.The dynamic adjustable set of cells of connection topology also includes detection switch, inspection
Slowdown monitoring switch control battery management system 1 opens and closes the control to switch matrix 2.
Detection switch is soft-touch type self-resetting button switch, and when unlocking condition (pressing) is reached, detection switch closure connects
Logical, when closedown condition (receiving shutdown signal) is reached, detection switch disconnects, and detection switch resets after disconnection.
Battery management system 1 is BMS battery management systems 1.BMS battery management systems 1 are existing general battery management
System 1, can effectively manage work efficiency and security performance that set of cells improves set of cells.
BMS battery systems custom is referred to as battery nurse or battery house keeper, mainly aims at intelligent management and safeguards each
Individual battery cell, prevents battery from overcharge and overdischarge occur, extends the service life of battery, monitors the state of battery.
It is the implementation method of the dynamic adjustable set of cells of above-mentioned connection topology with reference to Fig. 3, comprises the steps：
S1, battery management system 1 monitor electric current, voltage and the temperature information of battery cell 3 according to battery control module 11
By compare obtain setting the electric current of quantity, voltage and the immediate battery cell 3 of temperature and electric current, voltage and temperature contrast compared with
Big battery cell 3；
S2, battery management system 1 control the closure of the respective switch of the switch matrix 2 and disconnect, by setting quantity
The battery cell 3 of electric current, voltage and temperature close is linked to be string or group, and its aftercurrent, voltage and temperature contrast is larger
The battery cell 3 is linked to be string or group is connected into the equalizing circuit 12.
In step sl, battery management system 1 can receive and analyze the battery cell 3 that battery control module 11 is obtained
Electric current, voltage and temperature information are by comparing the electric current, voltage and the immediate battery cell 3 of temperature and the electricity that obtain setting quantity
The larger battery cell 3 of stream, voltage and temperature contrast, and according to setting rule control switch matrix 2；The energy of battery control module 11
Enough obtain electric current, voltage and the temperature information of set of cells and send back battery management system 1, wherein electric current, voltage and temperature letter
Breath is obtained by the measurement of voltage sensor, temperature sensor and high precision electric current transducer；Switch matrix 2 controlled can make accordingly
Switch closure with disconnect, so as to realize the annexation between cell change.
In step s 2, switch matrix 2 controlled can make the closure of corresponding switch and disconnect, so as to realize any monomer
The combination of battery；The battery cell 3 that equalizing circuit 12 makes capacity in set of cells, internal resistance, voltage difference larger reaches unanimity, only right
The larger battery cell 3 of characteristic difference carries out equilibrium, reduces the use of equalizing device, reduces energy expenditure, simplifies
Weighing apparatus circuit 12.
Also include step before step S1：
S11, detection switch receive open signal closure, and triggering step S1 starts condition, proceeds by step S1.
In step s 11, detection switch closure makes battery management system 1 open the control to switch matrix 2.
Also include step after step S2：
S22, battery management system 1 send cut-off signal disconnects detection switch.
In step S22, switch matrix 2 is shaped before lower secondary control after detection switch disconnection.
Battery control module 11 includes voltage sensor, temperature sensor and high precision electric current transducer, and by voltage
The electric current of battery cell, voltage and temperature information in sensor, temperature sensor and high precision electric current transducer monitoring cell group.
The present invention can make the battery list that capacity, internal resistance, voltage are close by the controlling switch matrix 2 of battery management system 1
The bunchiness of body 3 or in groups, is easy to choose representational some battery cells 3 in set of cells, consequently facilitating the estimation of state-of-charge,
The estimation of state-of-charge is more accurate, and client drives experience more preferably；The larger battery cell 3 of remaining capacity, internal resistance, voltage difference
Bunchiness or in groups, and make it reach unanimity by the equalizing circuit 12 in battery management system 1, only larger to characteristic difference electricity
Pond monomer 3 carries out equilibrium, reduces the use of equalizing device, reduces energy expenditure, simplifies equalizing circuit 12, can be more preferable
Ground plays the performance of battery cell 3.
It is the dynamic adjustable set of cells another embodiment of connection topology with reference to Fig. 2 and 4, connection topology dynamic is adjustable
Set of cells, including four battery core groups 4 rearranged by multiple battery cells 3 and battery management system 1, battery management system
1 includes battery control module 11 and equalizing circuit 12, also including two switch matrix 2；Each switch matrix 2 connects two battery cores
The two poles of the earth of battery cell 3 in group 4, battery core group 4 is rearranged by multiple battery cells 3；Switch matrix 2 is controlled by battery management system
System 1；Battery control module 11 is monitored electric current, voltage and the temperature information of battery cell 3 and is detected and be sent to battery management
System 1；Switch matrix 2 connects the battery cell 3 of the immediate setting quantity of the electric current determined after relatively, voltage and temperature
Bunchiness or group；Meanwhile, the larger battery cell 3 of remaining electric current, voltage and temperature contrast is linked to be into string or group is connected into balanced electricity
Road 12；Battery cell 3 connects groups of form and includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection.Pass through
The controlling switch matrix 2 of battery management system 1, can make the close bunchiness of battery cell 3 of capacity, internal resistance, voltage or in groups, be easy to
Representational some battery cells 3 in set of cells are chosen, consequently facilitating the estimation of state-of-charge, the estimation of state-of-charge is more accurate
Really, when the dynamic adjustable battery of connection topology, when organizing on automobile, client drives experience more preferably；Remaining capacity, internal resistance,
The larger bunchiness of battery cell 3 of voltage difference or in groups, and make it tend to one by the equalizing circuit 12 in battery management system 1
Cause, only larger to characteristic difference battery cell 3 carries out equilibrium, reduces the use of equalizing device, reduces energy expenditure, letter
Change equalizing circuit 12, can preferably play the performance of battery cell 3.
Pond monomer 3 connects groups of form and includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection；String is simultaneously
Battery cell 3 with parallel connection in series connection when the interspersed combination of connection is in parallel after as first connecting, or, have when formerly connecting after parallel connection
Battery cell 3 is in parallel with the battery cell 3 of bunchiness.
In certain embodiments, the close battery cell 3 of capacity, internal resistance, voltage be in total battery cell 3, according to
The quantity (can be 30-60/100 etc.) of setting, finds out capacity, internal resistance, the close battery cell being relatively close to of voltage.Setting
Quantity can make adjustment according to different demands.
Battery control module 11 includes voltage sensor, temperature sensor and high precision electric current transducer.Voltage sensor,
Temperature sensor and high precision electric current transducer detect respectively voltage, temperature and the electric current of set of cells, can by monitoring voltage,
Temperature and electric current judge the state of set of cells.
Switch matrix 2 is one；Switch matrix connects battery management system.Switch matrix 2 can be one or more, can
Flexibly to be used according to the quantity of battery cell 3, switch matrix 2 controlled can make the closure of corresponding switch and disconnect, so as to
Realize the combination of any cell.
The dynamic adjustable set of cells of connection topology also includes detection switch, and detection switch control battery management system 1 is opened
With control of the closing to switch matrix 2.
Battery management system 1 is BMS battery management systems 1.BMS battery management systems 1 are existing general battery management
System 1, can effectively manage work efficiency and security performance that set of cells improves set of cells.
The present invention can make the battery list that capacity, internal resistance, voltage are close by the controlling switch matrix 2 of battery management system 1
The bunchiness of body 3 or in groups, is easy to choose representational some battery cells 3 in set of cells, consequently facilitating the estimation of state-of-charge,
The estimation of state-of-charge is more accurate, and client drives experience more preferably；The larger battery cell 3 of remaining capacity, internal resistance, voltage difference
Bunchiness or in groups, and make it reach unanimity by the equalizing circuit 12 in battery management system 1, only larger to characteristic difference electricity
Pond monomer 3 carries out equilibrium, reduces the use of equalizing device, reduces energy expenditure, simplifies equalizing circuit 12, can be more preferable
Ground plays the performance of battery cell 3.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention, every utilization is not thereby limited
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
1. it is a kind of to connect the dynamic adjustable set of cells of topology, it is characterised in that to be arranged by multiple battery cells including one or more
The battery core group of row composition, connect in one or more described battery core groups the switch matrix of battery cell and connect one or more and open
Close the battery management system of matrix；
The battery management system includes battery control module and equalizing circuit；
The battery control module monitors electric current, voltage and the temperature information of the battery cell；
The battery management system is monitored electric current, voltage and the temperature information of the battery cell according to battery control module and is passed through
Comparison obtains the battery for setting the electric current of quantity, voltage and temperature is immediate and electric current, voltage and temperature contrast are larger
Monomer；According to the quantity of setting, closure and the disconnection of the respective switch of the switch matrix are controlled, by electric current, voltage and temperature
The close battery cell is linked to be string or group, and the larger battery cell of its aftercurrent, voltage and temperature contrast is connected
Bunchiness or group are connected into the equalizing circuit.
2. it is according to claim 1 to connect the dynamic adjustable set of cells of topology, it is characterised in that the battery control module
Including voltage sensor, temperature sensor and high precision electric current transducer.
3. it is according to claim 2 to connect the dynamic adjustable set of cells of topology, it is characterised in that the switch matrix is provided with
One or more；When switch matrix is multiple, the plurality of switch matrix connects respectively the battery management system.
4. it is according to claim 3 to connect the dynamic adjustable set of cells of topology, it is characterised in that also including detection switch；
The detection switch is closed when receiving open signal, and the battery management system monitors the battery list according to battery control module
The electric current, voltage and the temperature that obtain setting quantity be immediate and electric current, electricity by comparing for the electric current of body, voltage and temperature information
Pressure and the larger battery cell of temperature contrast；The battery management system start according to setting quantity, control described in open
Closure and the disconnection of the respective switch of matrix are closed, the battery cell of electric current, voltage and temperature close is linked to be into string or group, and
The larger battery cell of its aftercurrent, voltage and temperature contrast is linked to be into string or group is connected into the equalizing circuit；The electricity
Pond management system sends cut-off signal to the detection switch, the detection switch after the control to the switch matrix is completed
Receive and disconnected after cut-off signal.
5. it is according to claim 4 to connect the dynamic adjustable set of cells of topology, it is characterised in that the battery cell is linked to be
The form of group includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection；The interspersed combination of the connection in series-parallel is
With battery cell in parallel in series connection when in parallel after first connecting, or, there are battery cell and bunchiness when formerly connecting after parallel connection
Battery cell it is in parallel.
6. the implementation method of the dynamic adjustable set of cells of a kind of connection topology, it is characterised in that the connection topology dynamic is adjustable
Set of cells, including one or more rearranged by multiple battery cells battery core group, connect one or more described battery cores
The switch matrix of battery cell and the battery management system for connecting one or more switch matrix in group；The battery management system
Including battery control module and equalizing circuit；
The implementation method for connecting the dynamic adjustable set of cells of topology comprises the steps：
Battery management system monitors electric current, voltage and the temperature information of the battery cell according to battery control module by comparing
Obtain setting electric current, voltage and the immediate battery cell of temperature of quantity and electric current, voltage and temperature contrast are larger
The battery cell；
Battery management system controls the closure of the respective switch of the switch matrix and disconnects, by electric current, the voltage of setting quantity
It is linked to be string or group with the battery cell of temperature close, by the battery list that its aftercurrent, voltage and temperature contrast are larger
Body is linked to be string or group is connected into the equalizing circuit.
7. the implementation method of the dynamic adjustable set of cells of connection topology according to claim 6, it is characterised in that the electricity
Pond control module includes voltage sensor, temperature sensor and high precision electric current transducer.
8. the implementation method of the dynamic adjustable set of cells of connection topology according to claim 7, it is characterised in that described to open
Close matrix and be provided with one or more；When switch matrix is multiple, the plurality of switch matrix connects respectively the battery management
System.
9. the implementation method of the dynamic adjustable set of cells of connection topology according to claim 8, it is characterised in that connection is opened up
The adjustable set of cells of state of fluttering also includes detection switch；The detection switch is closed when receiving open signal, the battery management
System is monitored electric current, voltage and the temperature information of the battery cell according to battery control module and obtains setting quantity by comparing
Electric current, voltage and temperature is immediate and electric current, voltage and temperature contrast the are larger battery cell；The battery management
System starts the quantity according to setting, closure and the disconnection of the respective switch of the switch matrix is controlled, by electric current, voltage and temperature
The close battery cell of degree is linked to be string or group, and by the larger battery cell of its aftercurrent, voltage and temperature contrast
It is linked to be string or group is connected into the equalizing circuit；The battery management system sends disconnected after the control to the switch matrix is completed
To the detection switch, the detection switch received and disconnected after cut-off signal ON signal.
10. the implementation method of the dynamic adjustable set of cells of connection topology according to claim 9, it is characterised in that described
Battery cell connects groups of form and includes series connection and the interspersed combination of connection in series-parallel after in parallel after first series connection, first parallel connection；The connection in series-parallel
With battery cell in parallel in series connection when interspersed combination is in parallel after as first connecting, or, there is electricity when formerly connecting after parallel connection
Pond monomer is in parallel with the battery cell of bunchiness.
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| CN114498797A (en) * | 2020-11-12 | 2022-05-13 | 智一新能源发展有限公司 | Low-voltage parallel connection device, energy storage matrix, system and use method thereof |
| CN115566777A (en) * | 2022-11-17 | 2023-01-03 | 广东采日能源科技有限公司 | Battery system and energy storage system |
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| CN107806934A (en) * | 2017-12-13 | 2018-03-16 | 深圳市华荧技术有限公司 | A kind of distributed battery temperature dynamic detecting system |
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