CN109391001A - Battery pack system and the method for cutting off at least one branch in its multiple branch - Google Patents
Battery pack system and the method for cutting off at least one branch in its multiple branch Download PDFInfo
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- CN109391001A CN109391001A CN201810884897.7A CN201810884897A CN109391001A CN 109391001 A CN109391001 A CN 109391001A CN 201810884897 A CN201810884897 A CN 201810884897A CN 109391001 A CN109391001 A CN 109391001A
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- pack system
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- electric current
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000005520 cutting process Methods 0.000 title abstract description 10
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims description 48
- 238000007600 charging Methods 0.000 claims description 25
- 230000008859 change Effects 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H02J7/0026—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to battery pack systems and the method for cutting off at least one branch in its multiple branch.Propose a kind of battery pack system comprising :-multiple branches, wherein the branch is respectively provided with multiple battery cells and wherein the branch is electrically in parallel each other；With-determining device, for determining the compensation electric current between branch electrically in parallel each other, wherein each branch has at least one switch element, wherein the switch element, which is configured such that the switch element in the off state, separates corresponding branch with one or more of the other branch electricity, wherein the battery pack system has at least one switchgear, for by corresponding switch element be switched to it is described when it is disconnected, wherein at least one described switchgear is configured such that: if being higher than limiting value by the compensation electric current in corresponding branch that the determining device determines, the so described switchgear by the switch element of corresponding branch be switched to it is described when it is disconnected.
Description
Technical field
The present invention relates at least one in a kind of battery pack system and a kind of multiple branches for cutting off battery pack system
The method of a branch.
Background technique
For the battery pack system of motor vehicle, static memory or other models for being used to be stored in such as 10kWh to 1MWh
The other application of energy content in enclosing by hundreds and thousands of there is the corresponding energy at several Wh to the magnitude of several hundred Wh to contain
The battery cell of amount constructs.All reach to reach required power, required energy content or both, by battery pack
Battery (such as lithium ion battery) is one another in series and parallel connection.
Internal short-circuit is likely to occur in battery cell.Consequent malfunction resulting from, such as battery in order to prevent
Thermal runaway, using safety element, the safety element deactivates corresponding battery cell and makes battery cell thus
External pole or binding post electrical connection.
In battery pack system, by making single battery group battery deactivate or make battery cell by means of safety element
Module deactivate, there is voltage difference between branch electrically in parallel each other, be consequently formed (such as in about 1A to about 100A's
Under magnitude) compensation electric current, the battery pack system includes the multiple parallel of concatenated battery cell or concatenated module
Branch.Because there is electric current to flow between the branch being enduringly electrically connected each other in battery pack system, the electric current is not
It can be interrupted by main contactor.Under adverse conditions, this mistake that may cause single battery group battery or multiple battery cells
It carries.Under also adverse conditions, this may cause the thermal runaway of battery again.Under adverse conditions, compensation electric current itself may be used also
The aging that can lead to the damage of battery cell or be enhanced.
Summary of the invention
Advantages of the present invention
Embodiments of the present invention can be advantageously carried out: prevent the compensation electric current between the branch of battery pack system.
According to a first aspect of the present invention it is proposed a kind of battery pack system, the battery pack system includes :-multiple
Road, wherein these branches are respectively provided with multiple battery cells and wherein these branches are electrically in parallel each other；With-determining device,
For determining the compensation electric current between branch electrically in parallel each other, wherein each branch has at least one switch element,
Wherein the switch element, which is configured such that the switch element in the off state, makes corresponding branch and one or more
Other branch electricity separate, wherein the battery pack system has at least one switchgear, for cutting corresponding switch element
Described in changing to when it is disconnected, wherein at least one described switchgear is configured such that: if true by the determining device
The fixed compensation electric current in corresponding branch is higher than limiting value, then the switchgear is by the switch of corresponding branch
Element be switched to it is described when it is disconnected.
The advantages of battery pack system, is: usually reliably preventing compensation electric current or greatly reduces compensation electric current.Its
In there is the branch of the compensation electric current flowing higher than limiting value to be usually switched off, that is to say, that corresponding branch and it is one or more its
Its branch is separated with the extremely electricity of battery pack system.Through this, the overload of battery cell is generallyed avoid, because of the battery of branch
Group battery is cut off or electricity separates.Therefore, generally avoid the thermal runaway of battery cell and the damage of battery cell or
The aging being enhanced.Off-state usually can be the active state or passive state of corresponding switch element.
Switch element can be constructed reversibly respectively, that is to say, that after these switch elements are activated once, this
The state of a little switch elements can be converted to non-conductive conversion and from non-conductive guide electricity from conduction.However, can also set
Think: these switch elements irreversibly construct respectively, that is to say, that these switch elements be activated it is primary after, it
Must be replaced by new switch element.
The number of branch can be two, three, four, five or more than five (such as 10,20 or 50).
Limiting value for example can be 5A, 10A, 20A, 50A or 100A.
Second aspect according to the invention proposes a kind of at least one of multiple branches for cutting off battery pack system
The method of branch, wherein these branches are respectively provided with multiple battery cells and wherein these branches are electrically in parallel each other, wherein
Each branch has at least one switch element, wherein the switch element is configured such that the switch element disconnects
Separate corresponding branch with one or more of the other branch electricity, wherein described method includes following steps: determining
Compensation electric current between these branches；Identified compensation electric current is compared with limiting value；And will in its branch institute
The switch element that determining compensation electric current is higher than the limiting value be switched to it is described when it is disconnected.
The advantages of this method is: usually reliably preventing compensation electric current or greatly reduces compensation electric current.Wherein there is height
It is usually switched off in the branch of the compensation electric current flowing of limiting value, that is to say, that corresponding branch and one or more of the other branch
Or it is separated with the extremely electricity of battery pack system.Through this, the overload of battery cell is generallyed avoid, because of the battery cell of branch
It is cut off or electricity separates.Therefore, the thermal runaway of battery cell and the damage of battery cell are generallyed avoid or is enhanced
Aging.The off-state usually can be the active state or passive state of corresponding switch element.
The thinking of embodiments of the present invention can especially be considered as based on the thought and understanding then described.
According to an embodiment, these switch elements are arranged in the central battery group switching units separated with these branches
In.Through this, these switch elements usually technically can be simply replaced, such as after the activation and/or after damage
It is replaced.In addition, the battery pack system usually technically particularly simply constructs.Each switch element can just be divided
One branch of dispensing, that is to say, that connect with the branch.Each branch usually can just be assigned to a switch element,
That is it is connect with the switch element.
According to an embodiment, these switch elements are a part of branch respectively.In this respect advantageously, usually
Wiring costs are low.Through this, the manufacture for typically reducing battery pack system is spent.
According to an embodiment, which is configured such that determining device determines compensation electric current, mode
It is to determine voltage change of the branch about the time corresponding during the charging process of the battery pack system and/or discharge process
(dU/dt).It takes full advantage of in this case: being typically due in internal resistance the voltage drop as caused by compensation electric current, voltage exists
It quickly increases during charging process or is quickly reduced during discharge process.It therefore, usually can be technically simply true
Surely electric current is compensated.In general, this for example can by by the voltage change of per time unit be compared with standard value or with it is per when
Between the voltage change of unit and the ratio setting of standard value realize.In addition, can usually identify wherein has higher than limiting value
Compensation electric current flowing each branch and can only cut off the branch or these branches.
According to an embodiment, which is configured such that determining device determines compensation electric current, mode
Be-by the current value adduction for having sign of these branches and by the numerical value of the current value for having sign summed it up and the
One current limit value is compared, to determine that there is no the charging process of battery pack system and discharge processes；If
Determined that there is no the charging process of battery pack system and discharge processes, then the absolute value of the current value of these branches is added
With, for determine compensation electric current.In this case, usually electric current, Er Qietong can individually be determined for each branch
The numerical value for crossing the sum of electric current (signed) of each branch can determine that there is no electricity compared with the first current limit value
The charging process and discharge process of pond group system.And then, if positively determining that there is no the chargings of battery pack system
Journey and discharge process, then the numerical value of the electric current of these branches can usually be summed it up to (summation is exactly to compensate electric current) and with
Two current limit values or the limiting value are compared.If not compensating electric current to flow between these branches, the latter
The sum of should usually be substantially zero.Therefore, compensation electric current usually can be technically determined simply by current measurement.
It is also possible that the battery pack system is configured such that determining device determination compensation electric current, mode is-general
The current value adduction for having sign of these branches and by the numerical value and the first electric current of the current value for having sign summed it up
Limiting value is compared, to determine that there is no the charging process of battery pack system and discharge processes；And if-
Determine that there is no the charging process of battery pack system and discharge processes, then using the current value of corresponding branch as corresponding
The compensation electric current of branch.
First current limit value for example can be 15A or 30A.Second current limit value for example can be+5A or+10A.The
One current limit value and/or the second current limit value can be determined or be provided according to the measurement accuracy of battery sensor.
According to an embodiment, switchgear is the part of the battery set management control unit of battery pack system.Its is excellent
Point is: being not usually required to additional element or device.In addition, can usually make full use of be present in it is superfluous in battery pack system
It is remaining, in case of a fault alternative reaction (for example, to branch deactivate or cutting compensation can by manipulation with this
Switch element in the branch of branch circuit parallel connection compensates).
According to an embodiment, each branch includes the switchgear of oneself, described to open for activating switch element
Element is closed to be configured to cut off corresponding branch.Its advantage is that usual wiring costs are low.Switchgear usually can be respectively
The part of so-called gateway.Each module or each battery cell can usually be respectively provided with a gateway.It is possible that
The only one gateway of usual branch has switchgear.If each gateway or multiple gateways of branch have switch
Element, then these gateways of branch usually can by or door (ODER) switch element come logical connection.Its advantage is that: usually
The component that the branch is cut off in participation is all in gateway and therefore wiring costs are also lower.Through this, usually also closed
The advantages of in terms of robustness, because eliminating the likelihood of failure as caused by the interaction of multiple components.Switch element is logical
Following branch can often be belonged to, the branch can be cut off or be deactivated by corresponding switch element.
An embodiment in the method, compensation electric current are determined, and mode is-having for these branches is positive and negative
Number current value sum it up and the numerical value of the current value for having sign summed it up is compared with the first current limit value, with
Just determine that there is no the charging process of battery pack system and discharge processes；If it have been determined that there is no battery pack systems
Charging process and discharge process, then the absolute value of the current value of these branches is summed it up；And the electric current of-these branches
The numerical value of value summed it up is summed it up, for determining compensation electric current.In this case, individually come generally directed to each branch
Determine electric current, and by the numerical value of the sum of the electric current of each branch (signed) compared with the first current limit value come really
It is fixed that there is no the charging process of battery pack system and discharge processes.And then, if positively determining that there is no battery packs
The charging process and discharge process of system, then usually by the numerical value of the electric current of these branches adduction and with the second current limitation
Value or the limiting value are compared.If not compensating electric current to flow between these branches, the sum of the latter is usually answered
This is substantially zero.Therefore, usually technically simply, balancing battery is determined by current measurement.
It is also possible that determining compensation electric current in the method, mode is-by the electricity for having sign of these branches
Flow valuve sums it up and is compared the numerical value of the current value for having sign summed it up with the first current limit value, to determine
There is no the charging process of battery pack system and discharge processes；And there is no battery pack systems
Charging process and discharge process, then using the current value of corresponding branch as the compensation electric current of corresponding branch.
An embodiment in the method, compensation electric current are determined, and mode is determined in the battery pack system
Voltage change (dU/dt) of the corresponding branch about the time during charging process and/or discharge process.In this case sufficiently
Be utilized: being typically due in internal resistance the voltage drop as caused by compensation electric current, voltage quickly increase during the charging process or
It is quickly reduced during discharge process.Therefore, it compensates and is simply determined in current technique.In general, this can for example pass through
The voltage change of per time unit and standard value are compared or with the ratio of the voltage change of per time unit and standard value
It is arranged to realize.In addition, can usually identify wherein each branch for having the compensation electric current flowing higher than limiting value and can
Only to cut off the branch or these branches.
Point out: some in possible feature and advantage of the invention retouch herein with reference to different embodiments
It states.Those skilled in the art recognize: these features can be combined in the right way, are adapted to or be exchanged, to obtain this hair
Bright other embodiment.
Detailed description of the invention
Then, embodiments of the present invention are described by with reference to the attached drawing of accompanying, wherein no matter attached drawing or specification all
It should not be designed to limit the invention.
Fig. 1 shows the first embodiment of battery pack system according to the invention；
Fig. 2 shows the second embodiments of battery pack system according to the invention；And
Fig. 3 shows the third embodiment of battery pack system according to the invention.
These attached drawings are only schematical and without pressing correct proportions.In the drawings, identical appended drawing reference
Indicate feature that is identical or playing phase same-action.
Specific embodiment
Fig. 1 shows the first embodiment of battery pack system 10 according to the invention.Battery pack system 10 includes multiple
Branch 21,22,23, the branch 21,22,23 is electrically in parallel each other or electrically in parallel connection.Each branch 21,22,23 includes more
A battery cell 35,36,37.The battery cell 35,36,37 of one branch 21,22,23 is one another in series.Battery cell
35, it 36,37 is arranged in module 31,32,33, that is to say, that (fixation) connects ground to arrange mechanically to each otherly.For example, a branch
Road 21,22,23 may include about 4-10 module 31,32,33.Each module 31,32,33 for example may comprise three battery packs
Battery 35,36,37 or primary battery.
Each module 31,32,33 is assigned gateway 40,41,42 or gateway 40,41,42 and module 31,32,33
In each module 31,32,33 connect.Gateway 40,41,42 passes through a signal bus or more signal bus and battery pack pipe
Control unit 60 is managed to connect.
Each branch 21,22,23 is assigned switch element 50,51,52 or each branch 21,22,23 and one
A switch element 50,51,52 is electrically connected.Switch element 50,51,52 is arranged in battery pack switching units (BDU, battery-
In 55 and therefore disconnect-unit) dividually arranged with branch 21,22,23.
Switch element 50,51,52 is manipulated by battery set management control unit 60 or can be controlled by battery set management single
Member 60 is switched to when it is disconnected.Each battery cell 35,36,37 has safety element 45,46,47.If corresponding
Battery cell 35,36,37 in break down, then safety element 45,46,47 is by corresponding battery cell 35,36,37
It is shorted.It let us say that, battery cell 35,36,37 is deactivated.Corresponding safety element 45,46,47 can also then touch
That is hair is shorted battery cell 35,36,37, to prevent due to one or more battery group battery 35,36,37
Mechanical deformation caused by consequent malfunction.
Due to deactivating (or multiple) battery cell 35,36,37, the voltage drop of corresponding branch 21,22,23
It is low.Therefore, voltage difference is formed between different branches 21,22,23.This leads to the benefit between each branch 21,22,23 again
Repay electric current.
Cut off (deactivated) corresponding branch 21,22,23 by switch element 50,51,52, or by corresponding branch 21,
22, it 23 removes from circuit or is extremely separated at least one of the pole.If switch element 50,51,52 is switched to disconnected
Under open state, then corresponding branch 21,22,23 is deactivated.The off-state can be corresponding switch element 50,51,52
Active state or passive state or situation.
Three branches 21,22,23 are shown in FIG. 1, three branches 21,22,23 are assigned a switch respectively
Element 50,51,52.
The switchgear of battery set management control unit 60 or the part as battery set management control unit 60 can incite somebody to action
Switch element 50,51,52 is switched to can cut off corresponding branch 21,22,23 when it is disconnected and in this way.
It can determine in two different ways compensation electric current:
1. determine corresponding during the charging process of the battery pack system 10 and/or discharge process branch 21,22,23 about when
Between voltage change (dU/dt).Due to the voltage drop in internal resistance, the voltage of battery cell 35,36,37 is in the charging process phase
Between increase or reduced during discharge process.If by determining device, (it is single that the determining device can be battery set management control
The part of member 60) the compensation electric current based on determined by corresponding branch 21,22,23 voltage change about the time is greater than the limit
Value, then cutting off corresponding branch 21,22,23, mode is 50,51,52 quilt of switch element for belonging to branch 21,22,23
It is switched to when it is disconnected.Voltage change about the time can be compared and/or be set to reference value and reference value
It is proportional, electric current is compensated to determine.The determining device for example may include one or more circuits or may include meter
Calculation machine can be computer.
2. the electric current of each branch 21,22,23 is measured.The electric current of all branches 21,22,23 all include they just
Negative sign is added inside.Total and/or summation numerical value is compared with the first current limit value.If summation is less than the electric current
Limiting value, then positively determining currently without the charging process and discharge process that battery pack system 10 occurs.If this point
It is positively determined, then by (absolute) value of the electric current of branch 21,22,23 adduction and by the summation and second limit
Value is compared.(electric current is not compensated, measurement accuracy is infinitely great) in the ideal case, which should be zero.If this is total
Be higher than the second current limit value or limiting value, then it is determined that in the presence of (undesirably) compensation electric current and corresponding branch
Road 21,22,23 or all branches 21,22,23 are all turned off.
In order to be turned off, it should which the switch element 50,51,52 of cut-off corresponding branch 21,22,23 is switched to
When it is disconnected.
Fig. 2 shows the second embodiments of battery pack system 10 according to the invention.Second embodiment is due to as follows
Situation and be different from first embodiment:
1. the part that switch element 50,51,52 is respectively branch 21,22,23.Each branch 21,22,23 includes at least one
Switch element 50,51,52, for cutting off branch 21,22,23.
2. each branch 21,22,23 includes switchgear, for corresponding switch element 50,51,52 to be switched to disconnection shape
Under state.At least one gateway 40,41,42 of each branch 21,22,23 includes switchgear.
Fig. 3 shows the third embodiment of battery pack system 10 according to the invention.Third embodiment is due to as follows
Situation and be different from first embodiment:
Each branch 21,22,23 includes at least one gateway 40,41,42, at least one described gateway 40,41,42, which has, to be opened
Equipment is closed, for corresponding switch element 50,51,52 to be switched to when it is disconnected to make branch 21,22,23 deactivate.Cause
This, switch element 50,51,52 is not the part of branch 21,22,23, and switchgear is the part of branch 21,22,23 respectively.
In the third embodiment, each branch 21,22,23 be included in the gateway 40,41,42 of branch 21,22,23 with
Between corresponding switch element 50,51,52 or door (ODER) circuit 70,71,72.If the gateway 40 of branch 21,22,23,
41, one of 42 provide the signal for cutting, then due to or door (ODER) circuit 70,71,72 and in total exist construction or cloth
Set four kinds of possibilities of one or more switchgears and switch element 50,51,52:
1. switch element 50,51,52 is independently of branch 21,22,23；Switchgear is independently of branch 21,22,23(referring to Fig. 1)；
2. switch element 50,51,52 is independently of branch 21,22,23；Switchgear is the part of corresponding branch 21,22,23
(referring to Fig. 3)；
3. the part that switch element 50,51,52 is corresponding branch 21,22,23；Switchgear is independently of branch 21,22,23；
4. the part that switch element 50,51,52 is corresponding branch 21,22,23；Switchgear is corresponding branch 21,22,23
Part (referring to fig. 2).
Switch element 50,51,52 may include or can be one or more contactors, one or more partly lead respectively
Body switch and/or one or more triggerable safety elements (utilize electrochemistry triggering, such as high temperature fuse
(Pryofuse), it and/or using heat triggers, for example hot fuse (thermal fuse)).
Finally point out: the term as " having ", " comprising " etc. be not excluded for other element or steps and such as " one " or
"one" such term is not excluded for multiple.Appended drawing reference in claims is not construed as limiting.
Claims (10)
1. a kind of battery pack system (10) comprising:
Multiple branches (21,22,23), wherein the branch (21,22,23) be respectively provided with multiple battery cells (35,36,
37) and wherein the branch (21,22,23) is electrically in parallel each other；With
Determining device, for determining the compensation electric current between branch (21,22,23) electrically in parallel each other,
Wherein each branch (21,22,23) has at least one switch element (50,51,52), wherein the switch element
(50,51,52) be configured such that the switch element (50,51,52) make in the off state corresponding branch (21,22,
23) it is separated with one or more of the other branch (21,22,23) electricity,
Wherein the battery pack system (10) has at least one switchgear, is used for corresponding switch element (50,51,52)
Described in being switched to when it is disconnected,
Wherein at least one described switchgear is configured such that: if by the determining device determine corresponding
Compensation electric current in branch (21,22,23) is higher than limiting value, then the switchgear by corresponding branch (21,22,
23) switch element (50,51,52) be switched to it is described when it is disconnected.
2. battery pack system (10) according to claim 1, wherein
The switch element (50,51,52) is arranged in the central battery group switching units separated with the branch (21,22,23)
In.
3. battery pack system (10) according to claim 1, wherein
The switch element (50,51,52) is a part of the branch (21,22,23) respectively.
4. battery pack system described in one of -3 (10) according to claim 1, wherein
The battery pack system (10) is configured such that the determining device determines the compensation electric current, and mode is to determine
Corresponding branch (21,22,23) is about the time during the charging process and/or discharge process of the battery pack system (10)
Voltage change (dU/dt).
5. battery pack system described in one of -4 (10) according to claim 1, wherein
The battery pack system (10) is configured such that the determining device determines the compensation electric current, and mode is
The electric current for having sign that the current value for having sign of the branch (21,22,23) is summed it up and will be summed it up
The numerical value of value is compared with the first current limit value, to determine that there is no the charging processes of the battery pack system (10)
And discharge process；
If it have been determined that there is no the charging process and discharge process of the battery pack system (10), then the branch
The absolute value of the current value of (21,22,23) is summed it up, for determining the compensation electric current.
6. battery pack system described in one of -5 (10) according to claim 1, wherein
The switchgear is the part of the battery set management control unit (60) of the battery pack system (10).
7. battery pack system described in one of -5 (10) according to claim 1, wherein
Each branch (21,22,23) includes the switchgear of oneself, for activating the switch element (50,51,52), institute
Switch element (50,51,52) is stated to be configured to cut off corresponding branch (21,22,23).
8. one kind for cut off at least one branch in multiple branches (21,22,23) of battery pack system (10) (21,22,
23) method, wherein the branch (21,22,23) is respectively provided with multiple battery cells (35,36,37) and wherein described
Branch (21,22,23) is electrically in parallel each other, wherein each branch (21,22,23) have at least one switch element (50,51,
52), wherein the switch element (50,51,52) is configured such that the switch element (50,51,52) in the off state
Separate corresponding branch (21,22,23) with one or more of the other branch (21,22,23) electricity,
Wherein described method includes following steps:
Determine the compensation electric current between the branch (21,22,23)；
Identified compensation electric current is compared with limiting value；And
Identified in its branch (21,22,23) switch element (50,51,52) of the electric current higher than the limiting value will be compensated
Described in being switched to when it is disconnected.
9. according to the method described in claim 8, wherein
Determine the compensation electric current, mode is
The electric current for having sign that the current value for having sign of the branch (21,22,23) is summed it up and will be summed it up
The numerical value of value is compared with the first current limit value, to determine that there is no the charging processes of the battery pack system (10)
And discharge process；
If it have been determined that there is no the charging process and discharge process of the battery pack system (10), then the branch
The absolute value of the current value of (21,22,23) is summed it up, for determining the compensation electric current.
10. method according to claim 8 or claim 9, wherein
The compensation electric current is determined, and mode is the determining charging process in the battery pack system (10) and/or discharged
Voltage change (dU/dt) of the corresponding branch (21,22,23) about the time during journey.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017213697.9A DE102017213697A1 (en) | 2017-08-07 | 2017-08-07 | Battery system and method for switching off at least one strand of multiple strands of a battery system |
| DE102017213697.9 | 2017-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109391001A true CN109391001A (en) | 2019-02-26 |
| CN109391001B CN109391001B (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810884897.7A Active CN109391001B (en) | 2017-08-07 | 2018-08-06 | Battery pack system and method of cutting at least one of a plurality of branches thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109391001B (en) |
| DE (1) | DE102017213697A1 (en) |
| FR (1) | FR3069967B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545322A (en) * | 2011-12-27 | 2012-07-04 | 华为技术有限公司 | Battery module, power supply system and battery power supply control method |
| CN103354377A (en) * | 2013-06-26 | 2013-10-16 | 安徽力高新能源技术有限公司 | Automatic circulation control and protection circuit for lithium battery of energy storage power station |
| US20140055094A1 (en) * | 2011-04-28 | 2014-02-27 | Toyota Jidosha Kabushiki Kaisha | Battery system and control method thereof |
| CN103647309A (en) * | 2013-11-20 | 2014-03-19 | 南京利维斯通自控科技有限公司 | Non-circulating-current battery-powered system |
| CN106953391A (en) * | 2017-05-09 | 2017-07-14 | 上海电气集团股份有限公司 | Battery pack parallel charge-discharge device and charge/discharge control method |
-
2017
- 2017-08-07 DE DE102017213697.9A patent/DE102017213697A1/en active Pending
-
2018
- 2018-08-06 FR FR1857320A patent/FR3069967B1/en active Active
- 2018-08-06 CN CN201810884897.7A patent/CN109391001B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140055094A1 (en) * | 2011-04-28 | 2014-02-27 | Toyota Jidosha Kabushiki Kaisha | Battery system and control method thereof |
| CN102545322A (en) * | 2011-12-27 | 2012-07-04 | 华为技术有限公司 | Battery module, power supply system and battery power supply control method |
| CN103354377A (en) * | 2013-06-26 | 2013-10-16 | 安徽力高新能源技术有限公司 | Automatic circulation control and protection circuit for lithium battery of energy storage power station |
| CN103647309A (en) * | 2013-11-20 | 2014-03-19 | 南京利维斯通自控科技有限公司 | Non-circulating-current battery-powered system |
| CN106953391A (en) * | 2017-05-09 | 2017-07-14 | 上海电气集团股份有限公司 | Battery pack parallel charge-discharge device and charge/discharge control method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3069967B1 (en) | 2021-05-28 |
| DE102017213697A1 (en) | 2019-02-07 |
| CN109391001B (en) | 2023-08-25 |
| FR3069967A1 (en) | 2019-02-08 |
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