CN107799845A - A kind of battery management system and its battery switching matrix interlock circuit and interlock method - Google Patents
A kind of battery management system and its battery switching matrix interlock circuit and interlock method Download PDFInfo
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- CN107799845A CN107799845A CN201710994404.0A CN201710994404A CN107799845A CN 107799845 A CN107799845 A CN 107799845A CN 201710994404 A CN201710994404 A CN 201710994404A CN 107799845 A CN107799845 A CN 107799845A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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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- Chemical Kinetics & Catalysis (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of battery management system and its battery switching matrix interlock circuit and interlock method, the interlock circuit includes the processing module, switching gate module and switching switch matrix being sequentially connected；Switching switch matrix controls its folding by switching gate module；Switching gate module includes the first and second decoding units, first signal output port of the first decoding unit is connected with the control terminal of the m first kind switching switch in switching switch matrix, and the secondary signal output port of the second decoding unit is connected with the control terminal of n the second class switching switches in switching switch matrix.Present invention utilizes the method for digit translation, interlocking string number is improved, and improves more string number fault-tolerant abilitys, avoids multiple batteries (at least two) from simultaneously turning on using packet mode, the anti-interference of passage gating is realized, ensures that only output is effective all the way in synchronization in design.
Description
Technical field
The present invention relates to field of battery management, is interlocked more particularly to a kind of battery management system and its battery switching matrix
Circuit and interlock method.
Background technology
The novel batteries such as lithium ion battery, in order to ensure the safe handling of battery, generally require configuration when being used in series
Battery management system (BMS).BMS effect is mainly used to the voltage of detection battery cell in real time, monomer voltage acquisition scheme city
Current main flow has two schemes on field, and a kind of is the special integrated chip that chip manufacturer provides, and a string of chip sampling 12, is supplied
BMS development companies are combined and used.Another is to use switch matrix, carries out battery cell switching and sampling.Wherein
Integrated chip sampling battery number underaction, there are many drawbacks using with wiring.Switch matrix scheme facilitates client's flexible configuration
Battery management quantity, influenceed very little by cabling.Battery collocation is flexible.
BMS can be used to arrive and expanded similar to IO such as three or eight decoders, multi-channel gating devices in using switching matrix mode is switched
The component of exhibition, in use, this kind of device need reasonably to avoid misleading, and improve the fault-tolerant ability of switch, not so very may be used
Cell voltage can be caused to enter directly into plank, switching device or the low-voltage device of sampling correlation is damaged, cause the event of BMS systems
Barrier, so when BMS is designed, in the case that number of especially going here and there is continuously increased, higher is required to the fault-tolerant ability of switching switch.
The disclosure of background above technology contents is only used for inventive concept and the technical scheme that auxiliary understands the present invention, and it is not
The prior art of present patent application is necessarily belonged to, shows the applying date of the above in present patent application in no tangible proof
In the case of disclosed, above-mentioned background technology should not be taken to evaluate the novelty and creativeness of the application.
The content of the invention
Present invention aims at proposing a kind of battery management system and its battery switching matrix interlock circuit and interlock method,
To solve the low technical problem of fault-tolerant ability existing for above-mentioned prior art.
Therefore, the present invention proposes a kind of battery switching matrix interlock circuit for battery management system, including connect successively
Processing module, switching gate module and the switching switch matrix connect；Switching switch matrix controls its folding by switching gate module；
Switching gate module includes the first and second decoding units, the first receiver port connection processing module of the first decoding unit
The first control output end mouth, the second decoding unit secondary signal receiving port connection processing module the second control output end
Mouthful, the control terminal of the first signal output port of the first decoding unit and the m first kind switching switch in switching switch matrix
Connection, the control of the secondary signal output port of the second decoding unit and n the second class switching switches in switching switch matrix
End connection.
Preferably, switching gate module sets two or more, two or more switching gate modules it
Between external interlock realized by the 3rd decoding unit；The of the 3rd receiver port connection processing module of 3rd decoding unit
Three control output end mouths, the 3rd signal output port of the 3rd decoding unit and the Enable Pin of the switching gate module of corresponding number
Mouth connection.Preferably, the 3rd decoding unit includes z the 3rd signal output ports, and the extension number of switching gate module is more than
It is less than or equal to Z equal to 2.
Preferably, the first and second decoding units include two decoders respectively；Two decoders of the first decoding unit
Respective first receiver port connects the first control output end mouth, two decoders respective second of the second decoding unit altogether
Receiver port connects the second control output end mouth altogether；Two decoders connection first kind switching switch of first decoding unit,
Two decoders of the second decoding unit connect the second class switching switch；The enable port joint reason module of two decoders
Piece selects control port, makes to form interlocking between two decoders under same decoding unit.Preferably, two decoders are IO
Extend component, including three or eight decoders, multi-channel gating device.
Preferably, the first and second decoding units are decoder, and decoder I/O extension numbers are 1-8.
Meanwhile the invention also provides a kind of battery management system, including battery pack and the electricity that is sampled to battery pack
Sampling unit is pressed, voltage sampling unit includes as above any battery switching matrix interlock circuit.
In addition, the invention also provides a kind of battery switching matrix interlock method for battery management system, cell tube
The battery switching matrix interlock circuit of reason system includes the processing module, switching gate module and switching cubicle switchboard being sequentially connected
Battle array；Switching switch matrix controls its folding by switching gate module；Battery switching matrix interlock method comprises the following steps：1) it is right
Switching gate module sets the first and second decoding units, by the first receiver port connection processing mould of the first decoding unit
First control output end mouth of block, and the secondary signal receiving port of the second decoding unit is connected the second control of processing module
Output port；The first signal output port of the first decoding unit and the m first kind in switching switch matrix are switched simultaneously
The control terminal connection of switch, and by the secondary signal output port of the second decoding unit and the n in switching switch matrix the
The control terminal connection of two classes switching switch；2) the first receiver port receives the control signal of the first control output end mouth, control
The first decoding unit is made to select one in m first kind switching switch and switch it on；Secondary signal receiving port receives the
The control signal of two control output end mouths, one in control the second decoding unit selection n the second classes switching switches and by its
Conducting, complete to the interlocking between each switching switch in first kind switching switch, and cut to each in the second class switching switch
The interlocking changed between switch.
Preferably, it is each in the first and second decoding units that two decoders are set respectively in step 1)；Two decodings
Respective first receiver port of device connects the first control output end mouth altogether；Two decoders connection first of second decoding unit
Class switching switch, two decoders of the second decoding unit connect the second class switching switch；The enable port of two decoders is total to
The piece for connecing processing module selects control port；In step 2)：Enable port receiving sheet selects the enable signal of control port, controls same
Interlocking is formed between two decoders under individual decoding unit.
Preferably, in step 1), two or two are set in the battery switching matrix interlock circuit of battery management system
More than switching gate module and translate for making to carry out the 3rd of external interlock between two or more switching gate modules
Code unit, the 3rd control output end mouth of processing module is connected in the 3rd receiver port of the 3rd decoding unit, the 3rd
3rd signal output port of decoding unit connects with the enable port of the switching gate module of corresponding number；In step 2), the
Three receiver ports receive the control signal of the 3rd control output end mouth, the 3rd signal output port output gating signal, control
The enable port of switching gate module receives the gating signal corresponding to system, complete two or more switching gate modules it
Between carry out external interlock.
The beneficial effect that the present invention is compared with the prior art includes：Battery management system proposed by the present invention is compared to tradition
Implementation for, meet improved constantly under the more and more application backgrounds of battery pack string number instantly fault-tolerant ability requirement,
The present invention is in using switch matrix mode is switched, in first device of the similar I/O expansion such as three or eight decoders of application, multi-channel gating device
Part is to control the first kind in switching switch matrix to switch switch by the first decoding unit, and make the second decoding unit control
The receiver port difference of the second class switching switch in system switching switch matrix, the first decoding unit and the second decoding unit
Connected by the first control output end mouth and the second control output end mouth of processing module, realize the reception of two decoding units not
Same control signal, so as to ensure to be worked independently between the first decoding unit and the second decoding unit, complementation interference, connection is together
Interlocking can be achieved between each switching switch of one decoding unit, so as to avoid misleading between same class switching switch,
Improve the fault-tolerant ability of switching switch matrix, it is therefore prevented that the cell voltage of battery pack enters directly into the low pressure of battery sampling circuit
Side, switching device or the low-voltage device of sampling correlation are damaged, causes the BMS system failures, so, the present invention improves BMS's
Fault-tolerant ability, interlocking is realized while ensure that I/O expansion.
In preferable scheme, when such scheme can not meet battery strings number instantly, I/O expansion need to be further utilized
Component carries out I/O expansion to battery switching interlock circuit, and ensures corresponding fault-tolerant ability while extension, having.For
This, can extend the IO abilities of same decoding unit with two decoders, in order to ensure corresponding fault-tolerant ability, two decoders
Respective first receiver port connects the first control output end mouth altogether, and the piece of enable port joint reason module selects control terminal
Mouthful；Two decoders connection first kind switching switch of first decoding unit, two decoders connection the of the second decoding unit
Two classes switching switch；At work, the same control signal of two decoder receiving processing modules under same decoding unit,
In order to realize the interlocking between two decoders, received by enable port and select the chip selection signal of control port from piece to protect
Demonstrate,prove, between two decoders, when a decoder works, another decoder does not just work, and thus, has both improved IO energy
Power, but also with interlocking or fault-tolerant ability.
In preferable scheme, when can not all meet battery strings number instantly with two decoders to extend same decoding unit
When, I/O expansion further need to be carried out to battery switching interlock circuit using I/O expansion component, and ensure while extension,
The corresponding fault-tolerant ability having.Therefore, more multigroup switching gate unit can be set, to ensure I/O expansion ability, while in order to
Ensure corresponding fault-tolerant ability, need to meet to interlock between two or more switching gate units, translated by setting up the 3rd
Code unit realizes interlocking, and the 3rd receiver port of the 3rd decoding unit connects the 3rd control output end mouth of processing module,
3rd signal output port of the 3rd decoding unit connects two decodings with the enable port of the switching gate module of corresponding number
Respective first receiver port of device connects the first control output end mouth altogether；At work, same switching gate module is similarly hereinafter
Sample according to the first control output end mouth and the second control output end mouth control signal, or the first control output end mouth, second control
Output port processed, piece select the control signal of control port to be controlled, because switching gate module is more, in order to realize switch choosing
Interlocking between logical module, the gating signal from the 3rd decoding unit is received to protect by the enable port of switching gate module
Card, between two or more switching gate modules, during a switching gate module job, another switching gate module is just not
Work, thus, further increases IO abilities, in turn ensure that interlocking or fault-tolerant ability.
Brief description of the drawings
Fig. 1 is the switching switch matrix schematic diagram of the specific embodiment of the invention one；
Fig. 2 is the interlock circuit schematic diagram of the specific embodiment of the invention one.
Fig. 3 is the interlock circuit schematic diagram of the specific embodiment of the invention two.
Fig. 4 is the interlock circuit schematic diagram of the specific embodiment of the invention three.
Embodiment
With reference to embodiment and compare accompanying drawing the present invention is described in further detail.It is emphasized that
What the description below was merely exemplary, the scope being not intended to be limiting of the invention and its application.
With reference to the following drawings, non-limiting and nonexcludability embodiment will be described, wherein identical reference represents
Identical part, unless stated otherwise.
Embodiment one：
BMS sampling principles using switching switch matrix are as follows：As shown in figure 1, when the electricity for needing the string battery of sampling first
When cell voltage, BAT00 and BAT01 is gated, it is real by the converter connect after resistance R1, R2, R3, R4 partial pressure by AD ports
Now cell voltage is sampled.Similarly the first string battery needs to gate BAT01 and BAT02, the like, until having sampled most
A string afterwards.Current embodiment require that BAT00, BAT02, BAT04 being avoided during gating ..., even-numbered channels any two is misled
Logical and BAT01, BAT03, BAT05 ... odd chanel misleads, because can cause battery short by switching after misleading here
Road, gently then burns switch, damages BMS, heavy then to cause battery short circuit to generate heat on fire etc., and consequence is very serious.
As shown in Fig. 2 be the battery switching matrix interlock circuit for battery management system, including the processing being sequentially connected
Module MCU, switching gate module 2 and switching switch matrix (not shown)；Switching switch matrix controls it by switching gate module 2
Folding；Switching gate module 2 includes the first and second decoding units (21,22), and the first signal of the first decoding unit 21 receives
Port (A, B, C) connection processing module MCU the first control output end mouth (A1, A2, A3), the second letter of the second decoding unit 22
Number receiving port (A, B, C) connection processing module MCU the second control output end mouth (B1, B2, B3), the first decoding unit 21
First signal output port (Y0~Y7) is connected with the control terminal of the m first kind switching switch in switching switch matrix, and second
The control of the secondary signal output port (Y0~Y7) of decoding unit 22 and n the second class switching switches in switching switch matrix
End connection.
First kind switching switch corresponds to even number switching switch, i.e. bat00 swich, bat02 in Fig. 1
swich、bat04 swich、bat06 swich、bat08 swich、bat10 swich、bat12 swich、bat14
swich.So the m of the present embodiment is 8, can be according to the first and second decodings in some alternative embodiments of the present embodiment
The number of the signal output port of unit, the first kind of other numbers is set to switch switch.
Second class switching switch corresponds to odd number switching switch, i.e. bat01 swich, bat03 in Fig. 1
swich、bat05 swich、bat07 swich、bat09 swich、bat11 swich、bat13 swich、bat15
swich.So the n of the present embodiment is 8, can be according to the first and second decodings in some alternative embodiments of the present embodiment
The number of the signal output port of unit, the second class of other numbers is set to switch switch.
In the present embodiment, the first and second decoding units are decoder, and decoder I/O extension numbers are 8, certainly at this
In some alternative embodiments of embodiment, decoder I/O extension numbers are other numbers, preferably three or eight decoders.This implementation
In example, enable port CS1, CS2 and CS3 of three or eight decoders, carried out according to normal connection, here few description.
Principle explanation is operated with reference to such as following table one, this programme is ensured while can only selected using three or eight decoders
Lead to a passage, carry out fault-tolerant processing, this programme can only at most support 15 string battery samplings.It is limited to use in actual use
String number.
Such as following table one, MCU two groups of control output ends mouth A1A2A3, B1B2B3 decoding input signal are three, work as height
Level is that corresponding ports are 0, and low level is for 1, and signal can change between 000~111, and each signal correspondingly samples a certain electricity
Pond, A1A2A3 correspond to even-numbered channels gating, and B1B2B3 corresponds to odd chanel gating；Such as A1A2A3 sends 000 first,
B1B2B3 sends 000, and the receiver port reception signal of decoder, the Y0 of the first decoding unit is gated, the second decoding unit
Y0 gating, so as to gate BAT00 and BAT01；Secondly, A1A2A3 sends 001, B1B2B3 and sends 000, and the signal of decoder connects
Receiving end mouth reception signal, the first decoding unit Y1 gating, the second decoding unit Y0 gating, so as to gate BAT01 and
BAT02, by that analogy.Complete the voltage sample of whole battery pack.
Table one
The foregoing circuit can be directly applied on battery management system, so the present embodiment proposes a kind of battery management
System, including battery pack and the voltage sampling unit that is sampled to battery pack, voltage sampling unit include as above any electricity
Pond switching matrix interlock circuit.
The present embodiment is on the basis of foregoing circuit, it is proposed that a kind of battery switching matrix for battery management system is mutual
Locking method, battery switching matrix interlock method comprise the following steps：
1) the first and second decoding units are set to switch gating module, by the first signal receiving end of the first decoding unit
First control output end mouth of mouth connection processing module, and the secondary signal receiving port of the second decoding unit is connected processing mould
Second control output end mouth of block；Simultaneously by the first signal output port of the first decoding unit and the m in switching switch matrix
The control terminal connection of individual first kind switching switch, and by the secondary signal output port of the second decoding unit with switching cubicle switchboard
The control terminal connection of n the second class switching switches in battle array；
2) the first receiver port receives the control signal of the first control output end mouth, control the first decoding unit selection
The m first kind switches one in switch and switched it on；Secondary signal receiving port receives the control of the second control output end mouth
Signal processed, the second decoding unit of control n the second classes of selection switch one in switch and switched it on, complete to cut the first kind
The interlocking between each switching switch in switch is changed, and to the interlocking between each switching switch in the second class switching switch.
The battery management system and its battery switching matrix interlock circuit and interlock method that the present embodiment proposes, can complete 15
The sampling of string switching switch, is realized by two decoders, the interlocking between two classes switching switch, avoids the switching of same type
The conducting of switch, improve the fault-tolerant ability of switch.
Embodiment two：
The present embodiment makes deformation on the basis of embodiment one, because the limitation of embodiment string number, in order to increase string number
Ensure fault-tolerant ability simultaneously, it is proposed that the present embodiment is this present embodiment using three chip selection signals for having played decoder, is carried out
Fault-tolerant design, chip selection signal is all low for one high two, i.e. CS1 is height, and CS2 and CS3 are low, and only in this way, decoder could be normal
Work.
In the present embodiment, it is used for the battery switching matrix interlock circuit main distinction of battery management system and is：
As shown in figure 3, the first and second decoding units (21,22) include two decoders (211,212 respectively；Or 221,
222)；Respective first receiver port (A, B, C) of two decoders (211,212) of first decoding unit 21 connects first altogether
Control output end mouth (A1, A2, A3), the respective secondary signal of two decoders (221,222) of the second decoding unit 22 receive
Port (A, B, C) connects the second control output end mouth (B1, B2, B3) altogether；Two decoders (211,212) of first decoding unit 21
First kind switching switch is connected, two decoders (221,222) of the second decoding unit 22 connect the second class switching switch；Two
The piece of enable port (CS1, CS2, CS3) joint reason module of decoder selects control port CSU or CSD, makes same decoding
Interlocking is formed between two decoders under unit.
The present embodiment, two decoders are I/O expansion component, preferably three or eight decoders, certain the present embodiment some
In alternative embodiments, it can also be that other iO extend component, such as multi-channel gating device.
Three or eight decoders include three enable ports, can receive chip selection signal, and during normal work, CS1 is high level, CS2,
CS3 is low level；In the present embodiment, by taking the first decoding unit as an example, CS1 the accesses CSU, other two CS2 of decoder 211,
CS3 is low level；The CS1 of decoder 212 connects high level, and CS2 access CSU, CS3 is low level；Thus, when CSU sends high electricity
Usually, 211 3 enable ports of decoder meet the level conditions of normal work, and 212 3 enable ports of decoder can not
Meet the level conditions of normal work, so, now decoder 211 works, and decoder 212 does not work；Conversely, when CSU is sent
During low level, decoder 211 does not work, and decoder 212 works.So two decoders under same decoding unit can be realized
Between formed interlocking.
Such as following table two and the control principle of table three
Table two, even-numbered channels
Table three, odd chanel
The foregoing circuit of the present embodiment can be directly applied on battery management system, so the present embodiment proposes one kind
Battery management system, including battery pack and the voltage sampling unit that is sampled to battery pack, voltage sampling unit are included as above
Any battery switching matrix interlock circuit.
The present embodiment is on the basis of foregoing circuit, it is proposed that a kind of battery switching matrix for battery management system is mutual
Locking method, comprise the following steps
It is each in the first and second decoding units that two decoders are set respectively in step 1)；By the first decoding unit
Respective first receiver port of two decoders connect the first control output end mouth altogether, two decodings of the second decoding unit
The respective secondary signal receiving port of device connects the second control output end mouth altogether；Two decoders connection first of second decoding unit
Class switching switch, two decoders of the second decoding unit connect the second class switching switch；The enable port of two decoders is total to
The piece for connecing processing module selects control port；
In step 2)：Enable port receiving sheet selects the enable signal of control port, controls two under same decoding unit
Interlocking is formed between individual decoder.
In the present embodiment battery management system and its battery switching matrix interlock circuit and interlock method, it can at most realize
31 strings switch the battery sampling of switch, are not in that two passages of odd number or even-numbered channels simultaneously turn on now in sampling process
As improving BMS security.
Embodiment three：
In the present embodiment, the circuit of the circuit of above-described embodiment 1 or embodiment 2 can be considered as one group, thus be extended to do,
And ensure due fault-tolerant ability simultaneously, make to be not in that two passages of odd number or even-numbered channels simultaneously turn in sampling process
Phenomenon, using interlocked relationship in the group, it is extended, the limitation of battery strings number can be broken through, carries out BMS single module collections
Battery strings number carries out effective and safe extension.
Therefore, in the present embodiment, two or more can be set in switching gate module 2, and this switching gate module 2 is excellent
The switching gate module in the interlock circuit in embodiment 2 is elected as, it is of course also possible to be the gating module in embodiment 1；This reality
Apply in example, as shown in figure 4, using the switching gate module of interlock circuit in embodiment 2 as one group of carry out increased enrollment, show 3 groups altogether
Switching gate module, i.e. group A, group B and group C, wherein group C not completely shown all ends in figure
Mouthful, actually the structure with group A, group B is no different；
Realized and interlocked by the 3rd decoding unit 3 between switching gate module；3rd signal of the 3rd decoding unit 3 receives
Port (A, B, C) connection processing module MCU the 3rd control output end mouth (C1, C2, C3), the 3rd letter of the 3rd decoding unit 3
The Enable Pin of number output port (Y0~Y7) and the switching gate module (group A, group B and group C) of corresponding number
Mouth (CSDBA, CSDB, CSDC) connection.
In the present embodiment, the 3rd decoding unit 3 includes z the 3rd signal output ports, the extension of switching gate module
Number is less than or equal to Z more than or equal to 2, is preferably, three or eight decoders, so extension number is up to 8.That is, in the present embodiment, open
Close gating module and can have up to 8 groups.
Principle explanation is operated with reference to such as following table four：
While MCU A1A2A3, CSU, B1B2B3, CSD sends control signal according to the form of embodiment two, pass through
C1C2C3 sends control signal and controls the 3rd decoding unit selection multiple switch gating module to carry out work；In the present embodiment, when
When C1C2C3 is controlled with 001, Y1 output ports output gating signal, then group A work；Similarly, 010 when, group B
Work；When 100, group C work.Thus the interlocking between multiple switch gating unit is completed.
The foregoing circuit of the present embodiment can be directly applied on battery management system, so the present embodiment proposes one kind
Battery management system, including battery pack and the voltage sampling unit that is sampled to battery pack, voltage sampling unit are included as above
Any described battery switching matrix interlock circuit.
The present embodiment is on the basis of foregoing circuit, it is proposed that a kind of battery switching matrix for battery management system is mutual
Locking method, comprise the following steps：
In step 1), two or more open is set in the battery switching matrix interlock circuit of battery management system
Gating module and the 3rd decoding unit for making to carry out external interlock between two or more switching gate modules are closed,
3rd control output end mouth of the 3rd receiver port connection processing module of the 3rd decoding unit, in the 3rd decoding unit
3rd signal output port connects with the enable port of the switching gate module of corresponding number；
In step 2), the 3rd receiver port receives the control signal of the 3rd control output end mouth, the 3rd signal output
Port exports gating signal, and the enable port of switching gate module corresponding to control receives the gating signal, completes two or two
External interlock is carried out between individual above switching gate module.
The scheme of the present embodiment can be handled the fault-tolerant processing scheme described in embodiment 2 as group, then in groups
Groups of increase sampling.And by digital fool proof measure, carry out fault-tolerant processing between group.Greatly facilitate more string number battery pack BMS
Sampling processing.
To sum up, present invention utilizes the method for digit translation, interlocking string number is improved, and improves more string number fault-tolerant abilitys, profit
Avoid multiple batteries (at least two) from simultaneously turning on packet mode, realize that passage gates using matrix digit translation coded system
It is anti-interference, ensure that only output is effective all the way in synchronization in design.Adopting more than 60 strings can be realized by such scheme
Sample.So the fault-tolerant processing ability of more string number collections is substantially improved, BMS reliability is greatly improved,
Which thereby enhance application scenarios, it may include in the project such as passenger car, commercial car, tramcar, energy storage.
It would be recognized by those skilled in the art that it is possible that numerous accommodations are made to above description, so embodiment is only
For describing one or more particular implementations.
Although having been described above and describing the example embodiment for being counted as the present invention, it will be apparent to those skilled in the art that
It can be variously modified and replaced, without departing from the spirit of the present invention.Furthermore it is possible to many modifications are made with by spy
Condition of pledging love is fitted to the religious doctrine of the present invention, without departing from invention described herein central concept.So the present invention is unrestricted
In specific embodiment disclosed here, but the present invention all embodiments that may also include belonging to the scope of the invention and its equivalent
Thing.
Claims (10)
- A kind of 1. battery switching matrix interlock circuit for battery management system, it is characterised in that：Including the place being sequentially connected Manage module, switching gate module and switching switch matrix；The switching switch matrix controls it to open by the switching gate module Close；The switching gate module includes the first and second decoding units, the first receiver port connection of the first decoding unit First control output end mouth of the processing module, the secondary signal receiving port of the second decoding unit connect the processing module The second control output end mouth, the first signal output port of first decoding unit with it is described switching switch matrix in m The control terminal connection of individual first kind switching switch, the secondary signal output port of second decoding unit switch with the switching The control terminal connection of n the second class switching switches in matrix.
- 2. battery switching matrix interlock circuit as claimed in claim 1, it is characterised in that the switching gate module sets two Individual or two or more, pass through the 3rd decoding unit between two or more switching gate modules and realize interlocking；Institute The 3rd receiver port for stating the 3rd decoding unit connects the 3rd control output end mouth of the processing module, and the described 3rd translates 3rd signal output port of code unit connects with the enable port of the switching gate module of corresponding number.
- 3. battery switching matrix interlock circuit as claimed in claim 2, it is characterised in that the 3rd decoding unit includes z Individual 3rd signal output port, the extension number of the switching gate module are less than or equal to Z more than or equal to 2.
- 4. the battery switching matrix interlock circuit as described in claim 1,2 or 3, it is characterised in that described first and second translate Code unit includes two decoders respectively；Two respective first signals of decoder of first decoding unit connect Receiving end mouth connects first control output end mouth, two decoders respective described second of second decoding unit altogether Receiver port connects second control output end mouth altogether；Two decoders connection first kind of first decoding unit is cut Switch is changed, two decoders of second decoding unit connect the second class switching switch；The Enable Pin of two decoders The piece that mouth connects the processing module altogether selects control port, makes to be formed mutually between two decoders under same decoding unit Lock.
- 5. battery switching matrix interlock circuit as claimed in claim 1, it is characterised in that first and second decoding unit For decoder, the decoder I/O extensions number is 1-8.
- 6. battery switching matrix interlock circuit as claimed in claim 4, it is characterised in that described two decoders are I/O expansion Component, including three or eight decoders, multi-channel gating device.
- A kind of 7. battery management system, it is characterised in that：The voltage sampling unit sampled including battery pack and to battery pack, The voltage sampling unit includes the battery switching matrix interlock circuit as described in claim 1-4 is any.
- 8. a kind of battery switching matrix interlock method for battery management system, the battery switching square of the battery management system Battle array interlock circuit includes the processing module, switching gate module and switching switch matrix being sequentially connected；The switching switch matrix Its folding is controlled by the switching gate module；It is characterized in that：The battery switching matrix interlock method comprises the following steps： 1) the first and second decoding units are set to the switching gate module, by the first signal receiving end of first decoding unit Mouth connects the first control output end mouth of the processing module, and connects the secondary signal receiving port of second decoding unit Connect the second control output end mouth of the processing module；Simultaneously by the first signal output port of first decoding unit and institute State the control terminal connection of the m first kind switching switch in switching switch matrix, and second by second decoding unit Signal output port is connected with the control terminal of n the second class switching switches in the switching switch matrix；2) first letter Number receiving port receives the control signal of first control output end mouth, controls the first decoding unit selection m first Class switches one in switch and switched it on；The secondary signal receiving port receives the control of second control output end mouth Signal processed, control one in described n the second class switching switches of second decoding unit selection and switch it on, complete to described Interlocking in first kind switching switch between each switching switch, and to each switching switch in second class switching switch Between interlocking.
- 9. switching matrix interlock method as claimed in claim 8, it is characterised in that in step 1), in described first and It is each in two decoding units that two decoders are set respectively；Two decoders of first decoding unit are respective described First receiver port connects first control output end mouth altogether, and two decoders of second decoding unit are each The secondary signal receiving port connect second control output end mouth altogether；Two decodings of second decoding unit Device connection first kind switching switch, two decoders of second decoding unit connect the second class switching switch；Described in two The piece that the enable port of decoder connects the processing module altogether selects control port；In step 2)：Enable port receiving sheet selected control system The enable signal of port, control formation interlocking between two decoders under same decoding unit.
- 10. switching matrix interlock method as claimed in claim 8 or 9, it is characterised in that in step 1), in the cell tube Set in the battery switching matrix interlock circuit of reason system two or more switching gate modules and for make two or The 3rd decoding unit of external interlock is carried out between switching gate module described in two or more, the of the 3rd decoding unit Three receiver ports connect the 3rd control output end mouth of the processing module, in the 3rd signal of the 3rd decoding unit Output port connects with the enable port of the switching gate module of corresponding number；In step 2), the 3rd receiver port The control signal of the 3rd control output end mouth is received, the 3rd signal output port exports gating signal, and control is corresponding The enable port of the switching gate module receive the gating signal, complete two or more switching gate modules Between carry out external interlock.
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