CN205791695U - A kind of electrical storage device bidirectional equalization system - Google Patents
A kind of electrical storage device bidirectional equalization system Download PDFInfo
- Publication number
- CN205791695U CN205791695U CN201620630330.3U CN201620630330U CN205791695U CN 205791695 U CN205791695 U CN 205791695U CN 201620630330 U CN201620630330 U CN 201620630330U CN 205791695 U CN205791695 U CN 205791695U
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- China
- Prior art keywords
- disconnecting switch
- storage device
- module
- electrical storage
- equalization system
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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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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
This utility model relates to a kind of electrical storage device bidirectional equalization system, three disconnecting switch, lithium cell charging control module and DC/DC changer is combined based on resistance-type equalizer, have and equalized washability and the amphicheirality of balanced energy of cell, purpose is that solve in prior art can only the problem of unidirectional equilibrium, realize electrical storage device bidirectional equalization, and can realize in charge balancing from battery modules self power taking or outer low pressure power supply.
Description
Technical field
The application relates to a kind of electrical storage device equalizing system, more particularly to a kind of electrical storage device bidirectional equalization system and side
Method.
Background technology
At present, from the point of view of present Research both domestic and external, according to the energy storage selected by equalizing circuit or the difference of dissipative cell,
Lithium ion battery equalizer be broadly divided into intrinsically resistance-type equalizer, condenser type equalizer, inductance type equalizer and
Transformer type equalizer.Wherein, condenser type equalizer and inductance type equalizer are that the voltage difference by cell equalizes,
But owing to the voltage difference between cell is the least, adding the conduction voltage drop of switching device, therefore balanced energy is difficult to transfer, very
To shifting.And the equalizing circuit of general condenser type and inductance type equalizer is more complicated, parameter is chosen relatively difficult, power supply
When system is differently configured, needs detailed design and verify circuit parameter, extending the lead time.The shortcoming of transformer type equalizer
It is that volume of transformer is big, Heavy Weight, except switching loss, it is also contemplated that transformer loss, with the poor controllability of euqalizing current.With
Time, the Voltage unbalance that transformer leakage inductance causes makes system control well to compensate.
Resistance equalizer has that simple in construction, effect be notable and high reliability, but existing switching regulator resistance is equal
Weighing apparatus is generally unipolarity equilibrium, can only be by the energy dissipation of single high-voltage battery, and each battery two ends parallel connection can be by
, there is the problems such as euqalizing current is little, structure is complicated, resistive dissipation is difficult in the resistance that switching device controls, simultaneously for less than flat
All batteries of voltage then cannot realize equilibrium.
Summary of the invention
The present invention combines lithium cell charging control module and DC/DC changer based on resistance-type equalizer, have by
The equilibrium washability of cell and the amphicheirality of balanced energy, it is therefore an objective to solving in prior art can only the asking of unidirectional equilibrium
Topic, it is achieved electrical storage device bidirectional equalization, and can realize in charge balancing from battery modules self power taking or outer low pressure
Power supply.
The present invention particularly as follows: a kind of electrical storage device bidirectional equalization system, including:
Battery modules, it is connected by multiple battery cells, and is powered by power supply；
DC/DC module；
It is characterized in that:
Battery cell is connected with load with the second disconnecting switch by the first disconnecting switch；
Described first disconnecting switch, selects to need the battery cell of equilibrium and the second disconnecting switch to be connected；
Described second disconnecting switch, selects the first disconnecting switch to be connected with one of DC/DC module and load；
3rd disconnecting switch, DC/DC module is selected and one of battery modules or low-tension supply by the 3rd disconnecting switch
Connect；
Also include integrated chip, isolate with control end, the control end of the second disconnecting switch or the 3rd of the first disconnecting switch
The control end of switch is connected；Integrated chip controls the first disconnecting switch, the second disconnecting switch or the 3rd isolation according to balance policy
The selection state of switch；
Described power supply is low-tension supply.
Further, also including charge control module, it is arranged between DC/DC module and the second disconnecting switch, fills
Electric control module uses constant current mode, has 1A, 3A and 5A gear current value.
Further, integrated chip is connected with charge control module signal input part signal, controls charge control module
Select corresponding gear.
Further, described low voltage voltage scope 9～48V.
Further, described low-tension supply voltage is 24V.
Further, described integrated chip and the sensor phase of electric current in detection battery modules voltage, temperature and loop
Even, described integrated chip includes calculating the calculating part of monomer SOC in battery modules.
The method of the electrical storage device bidirectional equalization system of the present invention is:
At the end of battery modules is discharged, control the 3rd disconnecting switch and make low-tension supply and DC/DC module connect, equilibrium system
System is operated in low-tension supply power taking pattern；
When the battery modules phase after charging, control the 3rd disconnecting switch and make battery modules and DC/DC module connect, equilibrium
System is operated in self power taking pattern；
When battery modules need not charge balancing, control DC/DC module from service, cut off above two power taking mould simultaneously
Formula.
Further, described second disconnecting switch selects the first disconnecting switch to be connected with DC/DC module, the most described equilibrium
System is charge balancing state.
Described second disconnecting switch selects the first disconnecting switch to be connected with load, and the most described equalizing system is equalization discharge shape
State；
Further, electric current in integrated chip detection battery modules voltage, temperature and loop, calculate in battery modules single
Body SOC, and with monomer battery voltage concordance for equalizing the first criterion, to guarantee that battery modules can charge normal；When reaching
One criterion, in conjunction with battery temperature and SOC as the Second Criterion of equilibrium, continues equilibrium to battery modules.
Accompanying drawing explanation
Fig. 1 is principle of the invention structure chart.
Detailed description of the invention
The present invention comprise battery modules, the first disconnecting switch, the second disconnecting switch, the 3rd disconnecting switch, low-tension supply,
DC/DC module, charge control module, integrated chip and load, load is energy consumption resistance.By above-mentioned three groups of disconnecting switch, DC/
DC module, charge control module, integrated chip, energy consumption resistance realize battery modules master and passively equalize.When integrated chip detection electricity
When pond module monomer battery voltage or SOC are too high, integrated chip controls the second disconnecting switch switches to discharge mode, and controls
Make the first disconnecting switch, the second disconnecting switch, this voltage monomer and energy consumption resistance formation loop, it is achieved electric discharge；When integrated chip
When certain monomer voltage or SOC are too low in detection battery modules, control the second disconnecting switch and switch to charge mode, control the 3rd
Disconnecting switch from battery modules or outer low pressure voltage power taking, is realized voltage isolation, charged control by DC/DC module selectively
Molding block produces constant current, controls battery cell and the second disconnecting switch connects, it is achieved charging.Equalizing circuit principle is concrete such as
Shown in Fig. 1.
Battery modules charge balancing can selectively from battery modules self power taking, or outer low pressure power supply or with
Time cut off above two powering mode.Its system of selection: when needing equilibrium at the end of battery modules is discharged, now battery modules
SOC is relatively low, and in battery modules, monomer battery voltage is the lowest, outside being now operated in by integrated chip controls the 3rd disconnecting switch
Portion's power taking pattern；When the battery modules phase after charging, in battery modules, monomer battery voltage is the highest, now by special
Integrated chip controls the 3rd disconnecting switch is operated in self power taking pattern；When battery modules need not charge balancing, then by integrated
Chip cuts off above two powering mode simultaneously, and now DC/DC module and charge control module do not work, and saves energy consumption.
DC/DC module uses voltage isolation, it is achieved in battery modules, battery modules self is passed through in any monomer equalizaing charge
Power taking or outer low pressure power taking, its module input voltage range meets battery modules, outer low pressure supply voltage simultaneously simultaneously
Area requirement, preferably takes 9～48V, and it is output as stable voltage, preferably 24V；
Charge control module preferably employs constant current mode, and electric current is preferably 5A, can set different gear current value,
It is preferably 1A, 3A and 5A, and is selected corresponding gear by integrated chip according to balance policy.
Second disconnecting switch has 2 kinds of on-states, i.e. charge balancing state or equalization discharge state, and wherein charging is all
Weighing apparatus state ON charge control module, equalization discharge state ON resistance, and by integrated chip according to battery balanced policy control
It connects duty.
First disconnecting switch is connected for the battery cell and the second disconnecting switch selecting needs equilibrium, and by integrated chip
Select according to balance policy and need the battery cell of equilibrium；
Electric current in integrated chip detection battery modules voltage, temperature and loop, obtains monomer SOC in battery modules, and with
Monomer battery voltage concordance is equilibrium the first criterion, to guarantee that battery modules can charge normal；When reaching the first criterion, in conjunction with
Battery modules, as the Second Criterion of equilibrium, is continued equilibrium by battery temperature and SOC, to reach to improve the mesh of battery
's.
Claims (6)
1. an electrical storage device bidirectional equalization system, including:
Battery modules, it is connected by multiple battery cells, and is powered by power supply；
DC/DC module；
It is characterized in that:
Battery cell is connected with load with the second disconnecting switch by the first disconnecting switch；
Described first disconnecting switch, selects to need the battery cell of equilibrium and the second disconnecting switch to be connected；
Described second disconnecting switch, selects the first disconnecting switch to be connected with one of DC/DC module and load；
3rd disconnecting switch, DC/DC module selects to be connected with one of battery modules or low-tension supply by the 3rd disconnecting switch；
Also include integrated chip, with control end, the control end of the second disconnecting switch or the 3rd disconnecting switch of the first disconnecting switch
Control end be connected；Integrated chip controls the first disconnecting switch, the second disconnecting switch or the selection state of the 3rd disconnecting switch；
Described power supply is low-tension supply.
2. a kind of electrical storage device bidirectional equalization system as claimed in claim 1, it is characterised in that: also include that charging controls mould
Block, it is arranged between DC/DC module and the second disconnecting switch, and charge control module uses constant current mode, has 1A, 3A
With 5A gear current value.
3. a kind of electrical storage device bidirectional equalization system as claimed in claim 1, it is characterised in that: integrated chip controls with charging
Module by signal input end signal is connected, and controls charge control module and selects corresponding gear.
4. a kind of electrical storage device bidirectional equalization system as claimed in claim 1, it is characterised in that: described low voltage voltage scope 9
～48V.
5. a kind of electrical storage device bidirectional equalization system as claimed in claim 1, it is characterised in that: described low-tension supply voltage is
24V。
6. a kind of electrical storage device bidirectional equalization system as described in any one of claim 1 to 5, it is characterised in that: described integrated
Chip is connected with the sensor of electric current in detection battery modules voltage, temperature and loop, and described integrated chip includes calculating battery
The calculating part of monomer SOC in module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620630330.3U CN205791695U (en) | 2016-06-23 | 2016-06-23 | A kind of electrical storage device bidirectional equalization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620630330.3U CN205791695U (en) | 2016-06-23 | 2016-06-23 | A kind of electrical storage device bidirectional equalization system |
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| Publication Number | Publication Date |
|---|---|
| CN205791695U true CN205791695U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620630330.3U Expired - Fee Related CN205791695U (en) | 2016-06-23 | 2016-06-23 | A kind of electrical storage device bidirectional equalization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026256A (en) * | 2016-06-23 | 2016-10-12 | 北京理工大学 | Bidirectional balance system and method for storage battery |
-
2016
- 2016-06-23 CN CN201620630330.3U patent/CN205791695U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026256A (en) * | 2016-06-23 | 2016-10-12 | 北京理工大学 | Bidirectional balance system and method for storage battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20161207 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |