CN109193873A - Spare gridding battery pack and its method of controlling security after a kind of - Google Patents
Spare gridding battery pack and its method of controlling security after a kind of Download PDFInfo
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- CN109193873A CN109193873A CN201811334243.3A CN201811334243A CN109193873A CN 109193873 A CN109193873 A CN 109193873A CN 201811334243 A CN201811334243 A CN 201811334243A CN 109193873 A CN109193873 A CN 109193873A
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- battery
- control module
- battery pack
- gridding
- controllable switch
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
Classifications
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- H02J7/0026—
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- H02J7/0085—
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- H02J7/0086—
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- H02J7/0091—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
This application provides spare gridding battery pack after a kind of and its method of controlling security, wherein battery pack includes: top control module and m battery assembly module being connected in parallel to each other；Diode in each battery assembly module is connected with after controllable switch unit parallel connection with battery series unit；Top control module connects battery series unit by battery acquisition module；Top control module connects controllable switch unit by battery protection control module.The application is met by the gridding structure after first going here and there simultaneously on the basis of substation's backup power supply voltage levels large-capacity battery pack demand, avoid battery it is directly in parallel when internal mutual charge and discharge the problem of causing, ensure battery using safe and extend battery；Guarantee to switch seamlessly to when exchange power loss while meeting additives for overcharge protection battery-powered；Modular structure design can adapt to substation's backup power supply multiple voltage grade and battery capacity demand.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of rear spare gridding battery pack and its security control sides
Method.
Background technique
The various battery packs spare as DC power supply, whether valve-control sealed lead acid battery or lithium ion battery,
The overwhelming majority is using cascaded structure, when certain single cell open circuit, can cause whole group battery failure, the country occurred a lot of
Due to the accident that battery open circuit causes transformer to burn, large area user has a power failure, optimize the burst mode and topology knot of battery pack
Structure, it is more and more important during battery applications using structure in parallel.
But it when battery pack is directly in parallel, is had differences due to not can avoid battery consistency, it will in different batteries
Circulation is generated between group, causes cell degradation aggravation even to cause spontaneous combustion explosion accident, and general battery management system is in battery
Occur short circuit, overcharge, over-discharge when will by major loop disconnect system is protected, substation cannot be met well to standby
Power supply can switch to the requirement of battery group power supply when exchanging power loss without time interval.
It is controllably opened up in a kind of patent of invention (publication No.: 106532150 A of CN) modular high-voltage large-capacity lithium battery group
A battery unit will be formed after n battery module parallel connection by flutterring in structure, and m battery cells in series forms lithium battery group.Pass through
Electric current is balanced to carrying out to batteries in parallel connection module as criterion, inhibits the mutual charge and discharge inside batteries in parallel connection.
Above scheme the problem is that battery when direct in parallel, it is capacity, interior since inner parameter consistency is poor
Resistance, voltage, charging constant current had differences than all unavoidable, batteries in parallel connection charge and discharge different phase, by mutual charge and discharge
Electricity, with the expansion of otherness, internal mutual charge and discharge also will be more severe, especially in the starting of charge and discharge process and stop phase
Acutely, internal mutual charging or discharging current is even more than battery and permits when open-circuit voltage differs biggish battery parallel connection for battery open circuit voltage variation
Perhaps maximum rate charge-discharge stream causes aging aggravation even to cause spontaneous combustion explosion accident.Even if therefore battery pack when leaving the factory
Consistency is high, and with using the time to extend, consistent sex differernce can be increasing, and battery risk directly in parallel exists always.One
As battery management system battery occur short circuit, overcharge, over-discharge when will by major loop disconnect system is protected, cannot be very
Meet well substation backup power supply can be switched to when exchanging power loss without time interval battery group power supply use want
It asks.
Summary of the invention
The present invention provides a kind of rear spare gridding battery pack and its method of controlling security, and it is directly in parallel to avoid battery
When internal mutual charge and discharge the problem of causing, ensure battery using safe and extend battery；Meet additives for overcharge protection
While guarantee exchange power loss when switch seamlessly to it is battery-powered；Modular structure design can adapt to substation's standby electricity
Source multiple voltage grade and battery capacity demand.
In view of this, the application first aspect provide it is a kind of after spare gridding battery pack, comprising: top control module and that
This m battery assembly module in parallel；
Each battery assembly module includes battery series unit, diode, controllable switch unit, battery protection control mould
Block and battery acquisition module；
It connects after the diode is in parallel with the controllable switch unit with the battery series unit；
The top control module connects the battery series unit by the battery acquisition module；
The top control module connects the controllable switch unit by the battery protection control module.
Preferably, each battery series unit includes j battery pack being sequentially connected in series, each battery assembly module
Including the quantity of the battery acquisition module be specially j；
The j battery acquisition modules are correspondingly connected with the j battery packs, for acquiring all batteries in each battery pack
Voltage, temperature and be sent to the top control module.
Preferably, each battery pack is sequentially connected in series by t battery single.
Preferably, it is connected inside the battery pack by connection strap, draws the anode and negative terminals of the battery pack
Son；
Port is acquired from each battery single positive and negative anodes difference extraction voltage, by the battery single negative terminals
Draw temperature acquisition port；
The battery acquisition module carries out the voltage acquisition of the battery single especially by the voltage acquisition port, leads to
Cross the temperature acquisition that the temperature acquisition port carries out the battery single.
Preferably, the positive terminal of the diode is connect with the positive terminal of the battery series unit, and the diode is negative
Extreme connection forms the anode wiring point of the rear spare gridding battery pack, access DC bus anode, the battery series connection
The negative pole end of unit connects the negative terminal wiring point to form the rear spare gridding battery pack.
Preferably, the main control module reads the voltage of each battery single and every by the battery acquisition module
The temperature of a battery single, when the voltage of any battery single or temperature are more than threshold value, output with should be more than threshold
The cut-off signals of the corresponding controllable switch unit of the battery single of value, to realize the overcharge of each battery series unit
Protection.
Preferably, when the main control module is also used to judge whether the charging time of the battery series unit is greater than default
Between threshold value or judge whether the charging current of the battery series unit is less than predetermined current threshold, if one of them is sentenced
It is yes for breaking, then the battery series unit that the main control module is controlled and is judged as YES by the battery protection control module
The corresponding controllable switch unit shutdown.
Preferably, the controllable switch unit is specially IGBT device, the PWM tune of the battery protection control module output
Signal processed, and by the turn-on time of control pwm pulse frequency control IGBT device, to realize to the battery series unit
The adjusting of charging current.
The application second aspect provides a kind of rear spare gridding battery pack method of controlling security, based on such as first aspect institute
A kind of rear spare gridding battery pack stated carries out security control, comprising:
After main control module receives battery series unit charge command, controlled by battery protection control module and battery strings
The corresponding controllable switch unit closure of receipts or other documents in duplicate member, so that DC bus is connected to charging with battery series unit；
Main control module reads the voltage of each battery single and the temperature of each battery single by battery acquisition module, when
When the voltage or temperature of any battery single are more than threshold value, export and be somebody's turn to do controllable switch list corresponding more than the battery single of threshold value
The cut-off signals of member, so that controllable switch unit turns off.
Preferably, this method further include:
Main control module judges whether the charging time of battery series unit is greater than preset time threshold or judges battery strings
Whether the charging current of receipts or other documents in duplicate member is less than predetermined current threshold, if one of them is judged as YES, main control module passes through electricity
Control module is protected to control controllable switch unit shutdown corresponding with the battery series unit being judged as YES in pond.
As can be seen from the above technical solutions, the invention has the following advantages that
This application provides a kind of rear spare gridding battery pack and its method of controlling security, and wherein battery pack includes: total
Control module and m battery assembly module being connected in parallel to each other；Each battery assembly module include battery series unit, diode, can
Control switch unit, battery protection control module and battery acquisition module；After the diode is in parallel with the controllable switch unit
It connects with the battery series unit；The top control module connects the battery series unit by the battery acquisition module；
The top control module connects the controllable switch unit by the battery protection control module.The application by first go here and there after and
On the basis of gridding structure meets substation's backup power supply voltage levels large-capacity battery pack demand, it is direct to avoid battery
The problem of internal mutual charge and discharge cause when in parallel, ensure battery using safe and extend battery；Meet overcharge
Guarantee to switch seamlessly to when exchange power loss while protection battery-powered；After modular structure design can adapt to substation
Stand-by power source multiple voltage grade and battery capacity demand.
Detailed description of the invention
It in order to illustrate the embodiments of the present invention more clearly, below will be to required use in embodiment or description of the prior art
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of schematic diagram of one embodiment of rear spare gridding battery pack provided by the present application；
Fig. 2 is a kind of signal of one embodiment of rear spare gridding battery pack method of controlling security provided by the present application
Figure；
Fig. 3 is a kind of the another of one embodiment of rear spare gridding battery pack method of controlling security provided by the present application
A schematic diagram.
Specific embodiment
The present invention provides a kind of rear spare gridding battery pack and its method of controlling security, and it is directly in parallel to avoid battery
When internal mutual charge and discharge the problem of causing, ensure battery using safe and extend battery；Meet additives for overcharge protection
While guarantee exchange power loss when switch seamlessly to it is battery-powered；Modular structure design can adapt to substation's standby electricity
Source multiple voltage grade and battery capacity demand.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, a kind of one embodiment of rear spare gridding battery pack provided by the present application, comprising: master control mould
Block and m battery assembly module being connected in parallel to each other；
Each battery assembly module include battery series unit, diode, controllable switch unit, battery protection control module and
Battery acquisition module；
It connects after diode is in parallel with controllable switch unit with battery series unit；
Top control module connects battery series unit by battery acquisition module；
Top control module connects controllable switch unit by battery protection control module.
It should be noted that m, j, t etc. in the application indicate that the mathematic sign of quantity all indicates one or more
Quantity, and do not limit its quantity, usually natural number.
Also, the application connects with after controllable switch unit parallel connection with battery series unit by using diode, works as electricity
When pond group charges, electric current can be charged by controllable switch unit, and controllable switch unit can be asked in charging
Topic or when overcharge, turn off in time, prevent battery damage, and when battery power discharge, as DC bus decompression when
It waits, battery assembly module moment passes through corresponding seamless continual load for bus of diode respectively and provides back-up electric power.This Shen
Diode please is usually heavy-duty diode, and said effect can be better achieved.
The application meets substation's backup power supply voltage levels high capacity cell by the gridding structure after first going here and there simultaneously
On the basis of group demand, avoid battery it is directly in parallel when internal mutual charge and discharge the problem of causing, ensure battery using safe
And extend battery；Guarantee to switch seamlessly to when exchange power loss while meeting additives for overcharge protection battery-powered；Mould
The structure design of block can adapt to substation's backup power supply multiple voltage grade and battery capacity demand.
Specifically, referring to Fig. 1, a kind of rear spare gridding battery pack provided by the present application includes m battery assembly module
It is constituted with top control module, m battery assembly module includes m battery series unit and m diode, m controllable switch unit
And (battery assembly module includes a battery series unit and diode, one to m battery protection control module
A controllable switch unit and a battery protection control module), in which:
M battery series unit: #1 battery series unit, #2 battery series unit ..., #i battery series unit ..., #m
Battery series unit, wherein i, m are integer, and i≤m, i represent any one of 1~m battery series unit；
M diode: #1 diode, #2 diode ..., #i diode ..., #m diode, wherein i, m are integer,
I≤m, i represent any one of 1~m battery series unit；
M controllable switch unit: #1 controllable switch unit, #2 controllable switch unit ..., #i controllable switch unit ..., #m
Controllable switch unit, wherein i, m are integer, and i≤m, i represent any one of 1~m battery series unit；
M battery protection control module: #1 battery protection control module, #2 battery protection control module ..., #i battery are protected
Protect control module ..., #m battery protection control module, wherein i, m are integer, and i≤m, i represent any one of 1~m
Battery series unit；
After #i diode is in parallel with #i controllable switch unit with #i battery cells in series, #i battery protection control module and #i
Controllable switch unit connection, each battery assembly module internal structure is identical, is connected in parallel between unit；
Top control module is connect with each battery protection control module.
Further, each battery series unit includes j battery pack being sequentially connected in series, and each battery assembly module includes
The quantity of battery acquisition module is specially j；
J battery acquisition module is correspondingly connected with j battery pack, for acquire the voltage of all batteries in each battery pack,
Temperature is simultaneously sent to top control module.
Specifically, referring to Fig. 1, each battery string location includes j battery pack: battery pack 1, battery pack 2 ... battery
Wrap j and j battery acquisition module: battery acquisition module 1, battery acquisition module 2 ... battery acquisition module j, each battery pack
It is sequentially connected in series, each battery acquisition module is correspondingly connected with each Chi Bao, acquires the voltage of all batteries, temperature in each battery pack, respectively
Battery acquisition module is connected with the top control module.
Further, each battery pack is sequentially connected in series by t battery single.
Further, it is connected inside battery pack by connection strap, draws the anode and negative terminal of battery pack；
Port is acquired from each battery single positive and negative anodes difference extraction voltage, draws temperature by battery single negative terminals
Acquire port；
Battery acquisition module carries out the voltage acquisition of battery single especially by voltage acquisition port, passes through temperature acquisition end
Mouth carries out the temperature acquisition of battery single.
Specifically, referring to Fig. 1, each battery pack is sequentially connected in series by the battery single of t large capacity, including battery
Single 1, battery single 2 ..., battery single t, connected by connection strap inside battery pack, extraction battery pack anode and cathode connect
Line terminals；Port is acquired from each battery single positive and negative anodes difference extraction voltage, temperature is drawn by battery single negative terminals and adopts
Collect port, each battery management module is carried out the voltage acquisition of battery single by voltage acquisition port, passes through temperature acquisition
The temperature acquisition of port progress battery single.
Further, the positive terminal of diode is connect with the positive terminal of battery series unit, and diode cathode end connects shape
At the anode wiring point of rear spare gridding battery pack, DC bus anode is accessed, the negative pole end of battery series unit connects shape
At the negative terminal wiring point of rear spare gridding battery pack.
The positive terminal of each diode is connect with the positive terminal of each battery series unit, and each diode cathode end connects shape
At the anode wiring point of the battery gridding structure, DC bus anode is accessed, the negative pole end of each battery string location connects
Connect the negative terminal wiring point to form the battery gridding structure.
Further, main control module reads the voltage and each battery single of each battery single by battery acquisition module
Temperature, when the voltage of any battery single or temperature are more than threshold value, output with should be corresponding more than the battery single of threshold value
The cut-off signals of controllable switch unit, to realize the additives for overcharge protection of each battery series unit.
Further, main control module is also used to judge whether the charging time of battery series unit is greater than preset time threshold
Or judge whether the charging current of battery series unit is less than predetermined current threshold, if one of them is judged as YES,
Main control module controls controllable switch unit corresponding with the battery series unit being judged as YES by battery protection control module and closes
It is disconnected.
Further, controllable switch unit is specially IGBT device, the PWM modulation letter of battery protection control module output
Number, and by the turn-on time of control pwm pulse frequency control IGBT device, to realize the charging current to battery series unit
The adjusting of size.
Be above to it is provided by the present application it is a kind of after one embodiment of spare gridding battery pack be described in detail,
It below will be detailed to a kind of one embodiment progress of rear spare gridding battery pack method of controlling security provided by the present application
Description.
Referring to Fig. 2, a kind of one embodiment of rear spare gridding battery pack method of controlling security provided by the present application,
A kind of rear spare gridding battery pack based on such as above-described embodiment carries out security control, comprising:
101, after main control module receives battery series unit charge command, pass through the control of battery protection control module and electricity
The corresponding controllable switch unit closure of pond series unit, so that DC bus is connected to charging with battery series unit；
102, main control module reads the voltage of each battery single and the temperature of each battery single by battery acquisition module
Degree, when the voltage of any battery single or temperature are more than threshold value, output with should be more than that the battery single of threshold value is corresponding controllably
The cut-off signals of switch unit, so that controllable switch unit turns off.
For example, if the voltage or temperature of first battery single of the first battery series unit in left of Fig. 1 are more than threshold
Value then turns off the controllable switch unit of left first, remaining controllable switch unit is without shutdown.
Further, this method further include:
Main control module judges whether the charging time of battery series unit is greater than preset time threshold or judges battery strings
Whether the charging current of receipts or other documents in duplicate member is less than predetermined current threshold, if one of them is judged as YES, main control module passes through electricity
Control module is protected to control controllable switch unit shutdown corresponding with the battery series unit being judged as YES in pond.When this step can be per
Per quarter carries out.
Specifically, referring to Fig. 3, a kind of rear spare gridding battery pack method of controlling security of the application can also state
Are as follows:
After top control module receives i-th each battery assembly module charge command, #i electricity is transferred commands to by RS485 bus
Protect control module in pond；
#i battery protection control module controls #i controllable switch unit closure, make DC bus and #i battery series unit it
Between charge circuit conducting；
Top control module by RS485 communicate read #i battery series unit in each battery single end voltage U1, U2 ...
Ut*j, monomer temperature T1, T2 ... Tt*j, wherein the battery single quantity of each battery series unit is t*j；
According to acquire in real time battery cell voltage, monomer temperature come judge control #i controllable switch unit on-off, when
When any monomer voltage or monomer temperature are more than top control module given threshold, the shutdown letter of the #i controllable switch unit is exported
Number, to realize the additives for overcharge protection of each battery series unit；
The on-off that control #i controllable switch unit is judged according to the charging time of setting and charging current, works as charging
When time reaches setting value or charging current less than setting value, the cut-off signals of the #i controllable switch unit are exported, battery is made
String location enters monitor state.
Concrete application scene is implemented by above embodiments, it can be deduced that following application examples:
Such as substation's Li-ion batteries piles total voltage is 110V, total capacity 200AH, lithium ion battery single voltage is
3.2V, each battery inclusion quantity are 50AH, thus can calculate battery assembly module number i=4, battery is adopted in each battery assembly module
Collect module number and battery pack quantity j=5, battery single number t=7 in each battery pack.The lithium so formed based on the present invention
The composition of ion battery network structure and connection are as follows:
It is made of 4 battery assembly modules and 1 top control module, connects after 4 battery assembly modules are connected in parallel with top control module
It connects.Wherein, each battery assembly module includes 1 battery series unit, 1 diode, 1 controllable switch unit and 1 electricity
Control unit is protected in pond, and battery protection control unit connect with controllable switch unit, after diode is in parallel with controllable switch with electricity
The series connection of pond series unit, and each battery series unit includes 5 battery acquisition modules and 5 battery packs, each battery acquisition
Module is connect with top control module respectively, is connected in series inside each battery pack by 7 high capacity cell singles, battery pack with it is corresponding
Battery acquisition module connection.
Assuming that needing to charge to the 1st battery assembly module in the Li-ion batteries piles: system sends the 1st battery
The order of group charging is to top control module, after top control module receives order, order is transmitted to #1 battery by RS485 bus and is protected
Control module is protected, #1 battery protection control module controls the conducting of #1 controllable switch unit, and DC bus is opened to #1 battery pack list
Each battery single charging in member in 5 battery packs.Meanwhile top control module can be got by corresponding battery acquisition module
The end voltage of each battery single is U11, U21, U31, U41, U51, U61, U71, U12, U22...U75, each battery single
Temperature T11, T21, T31, T41, T51, T61, T71, T12, T22...T75.Top control module can be according to these real time data controls
The conducting and disconnection of #1 controllable switch unit processed, but when the temperature of a certain battery single or voltage are more than setting value, master control mould
Block controls #1 controllable switch unit and disconnects, and stops charging to #1 battery pack series unit, realizes additives for overcharge protection.Master Control Unit
#1 controllable switch unit can be controlled in the same way according to the charging time of setting and charging current.
If DC bus decompression, it is seamless continual for mother that 4 battery assembly module moments pass through corresponding diode respectively
Linear load provides back-up electric power.
The application also provides another application examples are as follows: Li-ion batteries piles total voltage is 48V, total capacity in such as substation
For 500Ah.Equally, it is calculated, based on lithium ion battery network structure of the invention, including 10 battery assembly modules, i.e. i
=10, each battery assembly module includes 1 battery protection control module, 1 diode, 1 controllable switch unit, 5 electricity again
Pond acquisition module, 5 battery packs (i.e. j=5), each battery pack are composed in series by three battery singles, i.e. t=3.The lithium ion
The network structure connection of battery pack is consistent with a upper application examples with charge and discharge implementation method, and details are not described herein again.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. spare gridding battery pack after a kind of characterized by comprising top control module and m battery pack list being connected in parallel to each other
Member；
Each battery assembly module include battery series unit, diode, controllable switch unit, battery protection control module and
Battery acquisition module；
It connects after the diode is in parallel with the controllable switch unit with the battery series unit；
The top control module connects the battery series unit by the battery acquisition module；
The top control module connects the controllable switch unit by the battery protection control module.
2. a kind of rear spare gridding battery pack according to claim 1, which is characterized in that each battery Series Sheet
Member includes j battery pack being sequentially connected in series, and the quantity for the battery acquisition module that each battery assembly module includes is specific
It is j；
The j battery acquisition modules are correspondingly connected with the j battery packs, for acquiring the electricity of all batteries in each battery pack
Pressure, temperature are simultaneously sent to the top control module.
3. a kind of rear spare gridding battery pack according to claim 2, which is characterized in that each battery pack is by t
A battery single is sequentially connected in series.
4. a kind of rear spare gridding battery pack according to claim 3, which is characterized in that pass through inside the battery pack
Connection strap connection, draws the anode and negative terminal of the battery pack；
Port is acquired from each battery single positive and negative anodes difference extraction voltage, is drawn by the battery single negative terminals
Temperature acquisition port；
The battery acquisition module carries out the voltage acquisition of the battery single especially by the voltage acquisition port, passes through institute
State the temperature acquisition that temperature acquisition port carries out the battery single.
5. a kind of rear spare gridding battery pack according to claim 1, which is characterized in that the positive terminal of the diode
It is connect with the positive terminal of the battery series unit, the diode cathode end connects to form the rear spare gridding battery pack
Anode wiring point, access DC bus anode, the negative pole end of the battery series unit connect to be formed it is described after spare grid
The negative terminal wiring point of electrochemical cell group.
6. a kind of rear spare gridding battery pack according to claim 4, which is characterized in that the main control module passes through institute
It states battery acquisition module and reads the voltage of each battery single and the temperature of each battery single, when any electricity
When the voltage or temperature of pond single are more than threshold value, export and be somebody's turn to do the controllable switch corresponding more than the battery single of threshold value
The cut-off signals of unit, to realize the additives for overcharge protection of each battery series unit.
7. a kind of rear spare gridding battery pack according to claim 1, which is characterized in that the main control module is also used to
Judge whether the charging time of the battery series unit is greater than preset time threshold or judges the battery series unit
Whether charging current is less than predetermined current threshold, if one of them is judged as YES, the main control module passes through the electricity
Protect the control module control controllable switch unit shutdown corresponding with the battery series unit being judged as YES in pond.
8. a kind of rear spare gridding battery pack according to claim 1, which is characterized in that the controllable switch unit tool
Body is IGBT device, the PWM modulation signal of the battery protection control module output, and passes through control pwm pulse frequency control
The turn-on time of IGBT device, to realize the adjusting to the charging current of the battery series unit.
9. spare gridding battery pack method of controlling security after a kind of, after one kind as claimed in any one of claims 1 to 8
Spare gridding battery pack carries out security control characterized by comprising
After main control module receives battery series unit charge command, pass through the control of battery protection control module and battery Series Sheet
The corresponding controllable switch unit closure of member, so that DC bus is connected to charging with battery series unit；
Main control module reads the voltage of each battery single and the temperature of each battery single by battery acquisition module, when any
When the voltage or temperature of battery single are more than threshold value, export and be somebody's turn to do controllable switch unit corresponding more than the battery single of threshold value
Cut-off signals, so that controllable switch unit turns off.
10. a kind of rear spare gridding battery pack method of controlling security according to claim 9, which is characterized in that further include:
Main control module judges whether the charging time of battery series unit is greater than preset time threshold or judges battery Series Sheet
Whether the charging current of member is less than predetermined current threshold, if one of them is judged as YES, main control module is protected by battery
It protects control module and controls controllable switch unit shutdown corresponding with the battery series unit being judged as YES.
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| CN201811334243.3A CN109193873A (en) | 2018-11-09 | 2018-11-09 | Spare gridding battery pack and its method of controlling security after a kind of |
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| CN201811334243.3A CN109193873A (en) | 2018-11-09 | 2018-11-09 | Spare gridding battery pack and its method of controlling security after a kind of |
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