CN205385325U - Modularization intelligence battery management system - Google Patents
Modularization intelligence battery management system Download PDFInfo
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- CN205385325U CN205385325U CN201620183531.3U CN201620183531U CN205385325U CN 205385325 U CN205385325 U CN 205385325U CN 201620183531 U CN201620183531 U CN 201620183531U CN 205385325 U CN205385325 U CN 205385325U
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- management system
- battery management
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- batteries
- battery
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Modularization intelligence battery management system relates to a modularization intelligence battery management system, comprises main battery management system and a plurality of sub - battery management system, and battery cell is parallelly connected to be constituted on banked battery is connected to sub - battery management system, and what banked battery that sub - battery management system connects can be connected to the difference fills discharge line, charges, also can be connected to and different fill discharge line, discharge. Main battery management system fills the sub - battery management system of discharge line series connection through many series connection to with many the sub - battery management system of parallel -connection charging line connection, main battery management system can carry out the charge -discharge of optimization according to the banked battery's that sub - battery management system installed actual state, keep the succinct of system's line simultaneously. Can broaden the requirement to battery cell performance parameter uniformity in the group battery to reduce whole car battery purchasing cost. The battery structure can reduce maintenance and get the degree of difficulty and cost. Nimble charge -discharge mode can realize that the quick charge simultaneously, prolongs battery cycle life as far as.
Description
Technical field
This utility model relates to a kind of modularization intelligent battery management system and driving method thereof, it is possible to different parameters, different set of cells is carried out discharge and recharge simultaneously.
Background technology
Existing electric vehicle mostly with battery power for driven by energy vehicle to run, due to battery technology limitation generally with the cell of enormous amount in parallel, series connection provide the energy for vehicle afterwards in groups.
Cell for constituting set of cells needs strictly to select to guarantee that the performance parameter of all cells is consistent.If performance parameter difference between cell each other is excessive, can cause sharply declining in the energy storage of set of cells after using after a while.Carrying out safeguarding simultaneously for the set of cells being made up of the cell of enormous amount is also very time-consuming behavior.
In addition to set of cells when carrying out quick charge, the balance of charging rate and battery life is also the important problem of puzzlement electric motor car industry.
Summary of the invention
The purpose of this utility model is to provide and a kind of can carry out optimization charging for the individual variation of cell group in parallel, modularization intelligent battery management system (BMS) and driving method.This battery management system can be suitable relax the performance parameter requirement to cell, thus realizing less battery purchase cost；Battery management system can carry out optimization charging for the individual variation of cell group in parallel, thus reaching to have balanced when quick charge the relation of charging rate and battery life better.
Battery management system described in the utility model (BMS) including: a master battery management system and the sub-battery management system of at least two.
In single sub-battery management system, several cell parallel connections are called batteries in parallel connection group in groups afterwards, its both positive and negative polarity is connected on sub-battery management system for connecting the terminal of battery, and batteries in parallel connection group can realize connection with sub-battery management system easily and separate.
Master battery management system is by sub-battery management systems of connection such as discharge and recharge circuit, control buses, and discharge and recharge circuit includes two or more charged in parallel circuit and at least one series-connection charge-discharge circuit；Charged in parallel circuit mentioned here is primarily referred to as one group of circuit for connecting the batteries in parallel connection group being arranged on sub-battery management system with parallel way, and charged in parallel circuit is mainly used in charging for batteries in parallel connection group；Series-connection charge-discharge circuit mentioned here refers to the circuit that master battery management system connects into into a Guan Bi ring with all sub-battery management systems, and master battery management system can be the batteries in parallel connection group charge and discharge being arranged on sub-battery management system by this circuit.
Controlling bus can two-way communication, master battery management system and sub-battery management system are all connected to control in bus, there is detection control unit in sub-battery management system, it is possible to the running parameter of detection set of cells, and send, by controlling bus, the data detected to master battery management system.
The internal wiring of the operation of examined control unit is had, it is possible to be connected on arbitrary charged in parallel circuit or series-connection charge-discharge circuit by the batteries in parallel connection group both positive and negative polarity in sub-battery management system in sub-battery management system；The connection of the batteries in parallel connection group both positive and negative polarity in sub-battery management system and arbitrary charged in parallel circuit or series-connection charge-discharge circuit can also be cut off；All right short circuit is through the series-connection charge-discharge circuit of book battery management system, to guarantee the unobstructed of series-connection charge-discharge circuit.
During battery management system charging, the batteries in parallel connection group that master battery management system is connected to each sub-battery management system with series-connection charge-discharge circuit by each charged in parallel circuit provides charging current, each sub-battery management system even can change the connection status of internal wiring, it is ensured that batteries in parallel connection group is connected to the correct charging circuit being suitable for this batteries in parallel connection group up；The running parameter of the set of cells in the sub-battery management system that the charge parameter on each charged in parallel circuit and series-connection charge-discharge circuit is passed back according to each sub-battery management system by master battery management system determines.
During battery management system electric discharge, master battery management system, by each series-connection charge-discharge line receiver batteries in parallel connection group electric energy, is supplied to electrical equipment after carrying out corresponding voltage transformation；Each sub-battery management system can change the connection status of internal wiring, the connection of batteries in parallel connection group with each charged in parallel circuit is disconnected, under ensureing each normal situation of series-connection charge-discharge connection, affiliated batteries in parallel connection group is connected on certain series-connection charge-discharge circuit or spins off from certain series-connection charge-discharge circuit.
During battery management system work, master battery management system gathers the set of cells running parameter that sub-battery management system is fed back by signal transmission line at any time, according to these parameters to each sub-battery management system transmitting control commands, each sub-battery management system is according to the connection status of the control command change internal wiring received, can the batteries in parallel connection group both positive and negative polarity in sub-battery management system be connected on corresponding charged in parallel circuit or series-connection charge-discharge circuit, the connection of the set of cells both positive and negative polarity in battery management system and corresponding charged in parallel circuit or series-connection charge-discharge circuit is cut off according to corresponding order, according to corresponding order short circuit through book battery management system specify series-connection charge-discharge circuit to ensure the unobstructed of series-connection charge-discharge circuit.
When the batteries in parallel connection group in certain sub-battery management system occurs abnormal, sub-battery management system can actively cut off the connection of the batteries in parallel connection group both positive and negative polarity in this sub-battery management system and all of charged in parallel circuit or series-connection charge-discharge circuit, or after sending alarm signal to master battery management system, under master battery management system order, cut off the connection of the set of cells both positive and negative polarity in this sub-battery management system and all of charged in parallel circuit or series-connection charge-discharge circuit；And short circuit is through the series-connection charge-discharge circuit of this sub-battery management system, makes the batteries in parallel connection group in this sub-battery management system isolate battery management system, thus avoiding batteries in parallel connection group abnormal conditions to continue to worsen, reduce system dangerous.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of battery management system.
Fig. 2 is the line schematic diagram of sub-battery management system.
S1, S2 are series-connection charge-discharge circuit, and P1, P2, PGND are electrical bus, and wherein PGND is ground wire, and C1 is for controlling bus, and 100 is master battery management system, and 200 is sub-battery management system, and 210 is detection control unit, and 300 is batteries in parallel connection group.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is described in further detail.Should be appreciated that detailed description of the invention described herein is only in order to explain this utility model, does not limit protection domain of the present utility model.
As shown in Figure 1, battery management system shown in this utility model is made up of a master battery management system 100 and n sub-battery management system 200, is connected by some series-connection charge-discharge circuits, charged in parallel circuit and control bus between master battery management system 100 with sub-battery management system 200.
As in figure 2 it is shown, sub-battery management system 200 has detection control unit 210, detection control unit 210 is connected with controlling bus C1 by terminal c_bus, and master battery management system 100 is connected with controlling bus C1 by terminal C_bus.
Detection control unit 210 can accept master battery management system 100 and control the folding condition of all switches in sub-battery management system 200 through the order controlling bus C1.
As shown in Figure 1, master battery management system 100 is connected in series all sub-battery management systems 200 by series-connection charge-discharge circuit S1, series-connection charge-discharge circuit S2, its starting point is S_out1, S_out2 terminal of master battery management system 100 respectively, terminal is S_in1, S_in2 terminal of master battery management system 100 respectively, and centre is sequentially connected with each sub-battery management system 200.
Series-connection charge-discharge circuit S1 in Fig. 1: the s_in1 terminal of " sub-battery management system 1 " is connected with the S_out1 terminal of master battery management system, the s_out1 terminal of " sub-battery management system 1 " is connected with the s_in1 terminal of " sub-battery management system 2 ", so repeat, until the s_out1 terminal of " sub-battery management system n " is connected with the S_in1 terminal of master battery management system, thus constituting a series-connection charge-discharge circuit.
The connection of series-connection charge-discharge circuit S2 and series-connection charge-discharge circuit S1 is similar.
Crossover phenomenon is not had between series-connection charge-discharge circuit S1, series-connection charge-discharge circuit S2.
Master battery management system 100 connects each sub-battery management system 200 by three electrical bus P1, P2, PGND, and wherein electrical bus PGND is ground wire；Electrical bus P1 is connected with the P_out1 terminal of master battery management system 100, and electrical bus P2 is connected with the P_out2 terminal of master battery management system 100, and electrical bus PGND is connected with the P_gnd terminal of master battery management system 100；Electrical bus P1 is connected with the p_in1 terminal of each sub-battery management system 200, and electrical bus P2 is connected with the p_in2 terminal of each sub-battery management system 200, and electrical bus PGND is connected with the p_gnd terminal of each sub-battery management system 200.
Electrical bus P1 and electrical bus PGND constitutes charged in parallel circuit 1；Electrical bus P2 and electrical bus PGND constitutes charged in parallel circuit 2.
As shown in Figure 2: sub-battery management system 200 has terminal W_t1, for connecting the positive pole of batteries in parallel connection group 300；Sub-battery management system 200 has terminal W_t2, for connecting the negative pole of batteries in parallel connection group 300.
Sub-battery management system 200 has terminal s_in1, s_out1, belongs to a part of series-connection charge-discharge circuit S1.
The terminal s_in1 of sub-battery management system 200 is connected to terminal W_t1 through switch X_sin1, terminal s_out1 is connected to terminal W_t2, folding under the control of switch X_sin1, X_sout1 detection control unit 210 in sub-battery management system 200 through switch X_sout1.
Sub-battery management system 200 has terminal s_in2, s_out2, belongs to a part of series-connection charge-discharge circuit S2.
The terminal s_in2 of sub-battery management system 200 is connected to terminal W_t1 through switch X_sin2, terminal s_out2 is connected to terminal W_t2, folding under the control of switch X_sin2, X_sout2 detection control unit 210 in sub-battery management system 200 through switch X_out2.
The terminal s_in1 of sub-battery management system 200 is connected to terminal s_out1 through switch X_s_sin1, terminal s_in2 is connected to terminal s_sout2, folding under the control of switch X_s_sin1, X_s_sin2 detection control unit 210 in sub-battery management system 200 through switch X_s_sin2.
Sub-battery management system 200 has terminal p_in1 to be connected with electrical bus P1.
The terminal p_in1 of sub-battery management system 200 is connected to terminal W_t1, folding under the control of switch X_pin1 detection control unit 210 in sub-battery management system 200 through switch X_pin1.
Sub-battery management system 200 has terminal p_in2 to be connected with electrical bus P2.
The terminal p_in2 of sub-battery management system 200 is connected to terminal W_t1, folding under the control of switch X_pin2 detection control unit 210 in sub-battery management system 200 through switch X_pin2.
Sub-battery management system 200 has terminal p_gnd to be connected with electrical bus PGND.
The terminal p_gnd of sub-battery management system 200 is connected to terminal W_t2, folding under the control of switch X_pgnd detection control unit 210 in sub-battery management system 200 through switch X_pgnd.
Detection control unit 210 in sub-battery management system 200 can monitor the running parameter of batteries in parallel connection group 300, and by controlling bus C1, the running parameter of batteries in parallel connection group 300 is transferred to master battery management system.
Detection control unit 210 in sub-battery management system 200 can according to the running parameter of batteries in parallel connection group 300, judge the duty of batteries in parallel connection group 300, change the connection status of sub-battery management system 200 internal wiring, batteries in parallel connection group 300 is isolated with other discharge and recharge circuit, it is to avoid batteries in parallel connection group 300 occurs unexpected in charge and discharge process.
Below for the job description of the battery management system shown in this utility model.
Under normal condition, sub-battery management system 200 matches one to one with batteries in parallel connection group 300, and the terminal W_t1 of sub-battery management system 200 connects the positive pole of batteries in parallel connection group 300；The terminal W_t2 of sub-battery management system 200 connects the negative pole of batteries in parallel connection group 300.
If certain sub-battery management system 200 does not connect batteries in parallel connection group 300 or batteries in parallel connection group 300 cisco unity malfunction, then the Guan Bi of switch X_s_sin1, the X_s_sin2 in this sub-battery management system 200, and other switches all disconnect；Now series-connection charge-discharge circuit S1, series-connection charge-discharge circuit S2 neutron battery management system 200 only play the effect of one section of wire.
Battery management system shown in this utility model, when charging duty, has series-connection charge-discharge circuit S1, series-connection charge-discharge circuit S2 in system, two lines road can be charged with identical or different current versus cell；Also has the charged in parallel circuit 1 being made up of electrical bus P1 and electrical bus PGND；The charged in parallel circuit 2 being made up of electrical bus P2 and electrical bus PGND.
Master battery management system 100 can according to the sub-battery management system 200 parameter from the batteries in parallel connection group 300 controlling bus C1 feedback, judge the discharge and recharge circuit that the batteries in parallel connection group 300 of corresponding sub-battery management system 200 should access, order sub-battery management system 200 to change the connection status of internal wiring, batteries in parallel connection group 300 is correctly accessed in correct discharge and recharge circuit.
With the embodiment in Fig. 1, if series-connection charge-discharge circuit S1 for the large current charge rapidly of batteries in parallel connection group 300, series-connection charge-discharge circuit S2 for the medium current of batteries in parallel connection group 300 charge, electrical bus P1 and electrical bus PGND constitutes charged in parallel circuit 1 and is used for the trickle charge to batteries in parallel connection group 300 for the restorative precharge of batteries in parallel connection group 300, electrical bus P2 and electrical bus PGND constitute charged in parallel circuit 2, and be likely to number batteries in parallel connection group 300 not etc. on all of circuit when being in charged state；It will be evident that any one batteries in parallel connection group 300 generally only has access a wherein charging circuit when being charged.
Group battery management system 200 correspondence batteries in parallel connection group 300 is used series-connection charge-discharge circuit S1 carry out rapidly large current charge time, switch X_sin1, X_sout1, X_s_sin2 Guan Bi, and in sub-battery management system 200, other all switches all disconnect；Now batteries in parallel connection group 300 accesses series-connection charge-discharge circuit S1, and keeps clear through the series-connection charge-discharge circuit S2 of sub-battery management system 200.
When batteries in parallel connection group 300 uses series-connection charge-discharge circuit S2 carry out medium current charging of group battery management system 200 correspondence, switch X_sin2, X_sout2, X_s_sin1 Guan Bi, and in sub-battery management system 200, other all switches all disconnect；Now batteries in parallel connection group 300 accesses series-connection charge-discharge circuit S2, and keeps clear through the series-connection charge-discharge circuit S1 of sub-battery management system 200.
When batteries in parallel connection group 300 uses electrical bus P1 and electrical bus PGND composition charged in parallel circuit 1 carry out restorative precharge of group battery management system 200 correspondence, switch X_pin1, X_pgnd, X_s_sin1, X_s_sin2 Guan Bi, and in sub-battery management system 200, other all switches all disconnect；Now batteries in parallel connection group 300 accesses electrical bus P1 and the electrical bus PGND charged in parallel circuit 1 constituted, and keeps clear through series-connection charge-discharge circuit S1 and the S2 of sub-battery management system 200.
When batteries in parallel connection group 300 uses electrical bus P2 and electrical bus PGND composition charged in parallel circuit 2 carry out trickle charge of group battery management system 200 correspondence, switch X_pin2, X_pgnd, X_s_sin1, X_s_sin2 Guan Bi, and in sub-battery management system 200, other all switches all disconnect；Now batteries in parallel connection group 300 accesses electrical bus P2 and the electrical bus PGND charged in parallel circuit 2 constituted, and keeps clear through series-connection charge-discharge circuit S1 and the S2 of sub-battery management system 200.
When the battery management system shown in this utility model is when charging duty, if not having batteries in parallel connection group 300 to need to access series-connection charge-discharge circuit S1 charging, then master battery management system 100 is not to series-connection charge-discharge circuit S1 input current, in order to avoid short circuit phenomenon occurs in series-connection charge-discharge circuit S1；If not having batteries in parallel connection group 300 to need to access series-connection charge-discharge circuit S2 charging, then master battery management system 100 is not to series-connection charge-discharge circuit S2 input current, in order to avoid short circuit phenomenon occurs in series-connection charge-discharge circuit S2.
When the battery management system shown in this utility model is operated in battery discharge status, master battery management system 100 collects the energy of sub-battery management system transmission by series-connection charge-discharge circuit S1 and series-connection charge-discharge circuit S2；Now switch X_pin1, X_pin2, X_pgnd in sub-battery management system 200 all disconnect；If batteries in parallel connection group 300 needs to discharge in series-connection charge-discharge circuit S1, then switch X_sin1, X_out1 Guan Bi, and switch X_s_sin1 and disconnect；If batteries in parallel connection group 300 is not discharged in series-connection charge-discharge circuit S1, then switch X_sin1, X_out1 and disconnect, and switch X_s_sin1 Guan Bi；If batteries in parallel connection group 300 needs to discharge in series-connection charge-discharge circuit S2, then switch X_sin2, X_out2 Guan Bi, and switch X_s_sin2 and disconnect；If batteries in parallel connection group 300 is not discharged in series-connection charge-discharge circuit S2, then switch X_sin2, X_out2 and disconnect, and switch X_s_sin2 Guan Bi；If batteries in parallel connection group 300 can not be discharged in any series-connection charge-discharge circuit, then switch X_sin1, X_out1, X_sin2, X_out2 and all disconnect, and switch X_s_sin2, X_s_sin2 and all close.
Claims (3)
1. modularization intelligent battery management system, it is made up of master battery management system (100) and some sub-battery management systems (200), cell parallel connection constitutes batteries in parallel connection group (300) and is connected on sub-battery management system (200), it is characterized in that: the batteries in parallel connection group (300) that sub-battery management system (200) connects may be coupled to, in different discharge and recharge circuits, be charged；The batteries in parallel connection group (300) that sub-battery management system (200) connects can also be connected in different discharge and recharge circuits, discharges.
2. modularization intelligent battery management system as claimed in claim 1, it is characterized in that: the batteries in parallel connection group (300) that sub-battery management system (200) connects can pass through the series-connection charge-discharge connection of one or more to master battery management system (100), and master battery management system (100) can be charged and discharged by the batteries in parallel connection group (300) that series-connection charge-discharge circuit antithetical phrase battery management system (200) connects；More than three electrical bus are had between master battery management system (100) and sub-battery management system (200), at least one of which is ground wire (PGND), sub-battery management system (200) is connected in parallel on these electrical bus, constituting plural charged in parallel circuit, master battery management system (100) charging circuit in parallel is batteries in parallel connection group (300) charging that sub-battery management system (200) connects.
3. modularization intelligent battery management system as claimed in claim 1, it is characterized in that: in sub-battery management system (200), have one group of internal wiring, detection control unit (210) in sub-battery management system (200) can be changed the connection status of internal wiring and be connected on different discharge and recharge circuits by batteries in parallel connection group (300), and batteries in parallel connection group (300) can also be disconnected by detection control unit (210) from road the charge and discharge electric wire connected；Detection control unit (210) in sub-battery management system (200) and master battery management system (100) are commonly connected to control in bus (C1), detection control unit (210) transmits the state parameter about batteries in parallel connection group (300) detected to master battery management system (100), and the order accepting master battery management system (100) changes the connection status of sub-battery management system (200) internal wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183531.3U CN205385325U (en) | 2016-03-10 | 2016-03-10 | Modularization intelligence battery management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183531.3U CN205385325U (en) | 2016-03-10 | 2016-03-10 | Modularization intelligence battery management system |
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| Publication Number | Publication Date |
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| CN205385325U true CN205385325U (en) | 2016-07-13 |
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| CN201620183531.3U Expired - Fee Related CN205385325U (en) | 2016-03-10 | 2016-03-10 | Modularization intelligence battery management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181289A (en) * | 2016-03-10 | 2017-09-19 | 肖华军 | Modularization intelligent battery management system |
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2016
- 2016-03-10 CN CN201620183531.3U patent/CN205385325U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181289A (en) * | 2016-03-10 | 2017-09-19 | 肖华军 | Modularization intelligent battery management system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20210310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |