CN204376468U - Battery energy storage system with single balancer for balancing voltages of multiple batteries - Google Patents
Battery energy storage system with single balancer for balancing voltages of multiple batteries Download PDFInfo
- Publication number
- CN204376468U CN204376468U CN201520031456.4U CN201520031456U CN204376468U CN 204376468 U CN204376468 U CN 204376468U CN 201520031456 U CN201520031456 U CN 201520031456U CN 204376468 U CN204376468 U CN 204376468U
- Authority
- CN
- China
- Prior art keywords
- battery
- voltage
- balancer
- negative pole
- positive pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 4
- 230000006735 deficit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A battery energy storage system with a single balancer to balance multiple battery voltages, comprising: a plurality of batteries; a bus; a balancer for balancing the voltages of the cells to prevent the voltages of some cells from being excessively high or excessively low with respect to the voltages of other cells; a balanced circuit bus including a positive bus line and a negative bus line; for each battery, the balance device passes through the balancer and forms a power balance loop with the general bus, namely, the surplus or lack of electricity in each battery can be balanced with other batteries through the loop; a plurality of battery controllers; each battery comprises a corresponding battery controller which can be used for detecting the voltage of each corresponding battery at the two ends of the serial bus; and the battery pack controller is used for controlling the current of the whole balancing circuit so as to achieve the balance of the voltage of each battery, and is connected with the battery controllers of each battery in parallel through a communication bus.
Description
Technical field
The utility model has the electric power system about cell voltage, and especially a kind of single balancer balances the battery energy storage system of many cell voltages.
Background technology
Current battery energy storage system cabinet, is connected with extraneous electric power system in the mode of series winding by multiple battery.This electric power system can provide electric power to be stored in each battery, if when the load of this system needs electric power, by this battery supplied electric power and this load.During battery strings connection circuit, because in the middle of charge and discharge process, every battery is completely equal in line current.Because the impedance of every battery because of chemical action not exclusively equal, and cause the different capabilities of every voltage also to have difference. repeatedly after discharge and recharge, the different situation of capacity is more obvious.After using so permanent, often the voltage of each battery is inequal, but has the voltage of a little battery excessive.
Although have, every battery of the inside is monitored, when but single cell voltage is too high or too low, the processing method of prior art all just changes that battery usually, or with resistance, too high battery is discharged, if with conductive discharge, can produce a large amount of heat, those energy have also all slatterned.
Can use resistance to discharge traditionally, but this mode to cause the unnecessary consumption of electric energy.More the mode of environmental protection is if single cell voltage is too high, just give all batteries the energy conversion of single battery, otherwise, if this cell voltage is too low, just give single battery by the energy conversion of all batteries, efficiency like this is just much higher, and the energy converter be responsible between single battery and all batteries is referred to as balancer.
The utility model wishes to apply the problem that above-mentioned concept solves Voltage unbalance between battery, but can not all put a balancer by every battery, because balancer price is higher, and institute takes up space not little, therefore a balancer only used by whole battery energy storage system cabinet, and shortcoming can not balance every battery exactly simultaneously, once can only balance a battery, but this shortcoming can be said to be and can accept, because it is lower that the probability that many batteries go wrong once occurs simultaneously.
Therefore the utility model wishes to propose the battery energy storage system that a kind of brand-new single balancer balances many cell voltages, to solve the defect on prior art.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of single balancer to balance the battery energy storage system of many cell voltages, only use single balancer to coordinate this battery controller can reach the object of each cell voltage of balance, and unnecessary electricity can be drawed from one to make good the deficits of another the object that other battery can reach and save the energy.Moreover do discharge and recharge without use battery pack, the overall object that also can reach environmental protection.
The technical solution of the utility model is as follows:
Single balancer balances a battery energy storage system for many cell voltages, comprising:
Several battery, wherein this several battery connects a total bus in the mode of series connection, and this bus can connect extraneous electric power system;
One balancer its there is balance of voltage function, connecting this bus, for balancing the voltage of each battery, preventing the voltage of some battery relative to the overtension or too low of other battery;
One balancing circuitry bus, comprise a positive pole winding displacement and a negative pole winding displacement, wherein one end of this positive pole winding displacement connects the positive input terminal of this balancer, the other end is then divided into the multiple and positive pole connect time separated time, respectively the end of this positive pole time separated time is connected to the cathode output end of each corresponding battery, in the battery of correspondence, respectively this positive pole time separated time comprises the positive pole relay of a correspondence, and this positive pole relay can be used for the electric current of control flow check through this positive pole time separated time; One end of this negative pole winding displacement connects the negative input end of this balancer, the other end is then divided into the multiple and negative pole connect time separated time, respectively the end of this negative pole time separated time is connected to the cathode output end of each corresponding battery, in the battery of correspondence, respectively this negative pole time separated time comprises the negative pole relay of a correspondence, and this negative pole relay can be used for the electric current of control flow check through this negative pole time separated time; Therefore for each battery, it is connected in series this balancer by this corresponding positive pole time separated time and this negative pole time separated time, and form a power balance loop with this bus, namely electricity that is unnecessary in each battery or that lack can reach the balance with other battery by this primary Ioops;
Several battery controller, wherein each this battery controller connects this battery of a correspondence respectively, can be used for the voltage of battery at serial connection bus two ends detecting each correspondence; And this battery controller can be used for controlling the negative pole relay of this negative pole time separated time and the positive pole relay of this positive pole time separated time;
One battery controller, can be used for the electric current controlling whole balancing circuitry, to reach the balance of respectively this cell voltage, this battery controller is by a communication bus and connect the battery controller of respectively this battery, this battery controller also controls to only have the positive pole relay of a battery and negative pole relay to open when operating at every turn, and all the other all can be closed.
The beneficial effects of the utility model are: only use single balancer to coordinate this battery controller can reach the object of each cell voltage of balance, and unnecessary electricity can be drawed from one to make good the deficits of another the object that other battery can reach and save the energy.Moreover do discharge and recharge without use battery pack, the overall object that also can reach environmental protection.
Accompanying drawing explanation
Fig. 1 shows the structured flowchart of the utility model assembly.
Fig. 2 shows the structured flowchart of the utility model assembly, wherein also comprises load.
wherein:
10-battery
11-battery controller
20-balancer
30-balancing circuitry bus
31-positive pole winding displacement
32-negative pole winding displacement
40-battery controller
50-communication bus
100-bus
311-positive pole time separated time
312-positive pole relay
321-negative pole time separated time
322-negative pole relay.
Embodiment
Please refer to shown in Fig. 1 to Fig. 2, show the battery energy storage system that the single balancer of use of the present utility model balances many cell voltages, comprise following assemblies:
Several battery 10, wherein this several battery 10 connects a total bus 100 in the mode of series connection.This bus 100 can connect extraneous electric power system, and this electric power system can provide electric power to be stored in each battery, if when the load (not shown) of this system needs electric power, by this battery supplied electric power and this load.
One balancer 20 its there is balance of voltage function, connect this bus 100, for balancing the voltage of each battery 10, to prevent the voltage of some battery 10 relative to the overtension or too low of other battery 10.
One balancing circuitry bus 30, comprises positive pole winding displacement 31 and a negative pole winding displacement 32.Wherein one end of this positive pole winding displacement 31 connects the positive input terminal of this balancer 20, and the other end is then divided into the multiple and positive pole connect time separated time 311.Respectively the end of this positive pole time separated time 311 is connected to the cathode output end of each corresponding battery 10.In the battery 10 of correspondence, respectively this positive pole time separated time 311 comprises the positive pole relay 312 of a correspondence, and this positive pole relay 312 can be used for the electric current of control flow check through this positive pole time separated time 311.
One end of this negative pole winding displacement 32 connects the negative input end of this balancer 20, and the other end is then divided into the multiple and negative pole connect time separated time 321.Respectively the end of this negative pole time separated time 321 is connected to the cathode output end of each corresponding battery 10.In the battery 10 of correspondence, respectively this negative pole time separated time 321 comprises the negative pole relay 322 of a correspondence, and this negative pole relay 322 can be used for the electric current of control flow check through this negative pole time separated time 321.
Therefore for each battery 10, it is connected in series this balancer 20 by this corresponding positive pole time separated time 311 and this negative pole time separated time 321, and forms a power balance loop with this bus 100.Namely electricity that is unnecessary in each battery 10 or that lack can reach the balance with other battery 10 by this primary Ioops.
Several battery controller 11, wherein each this battery controller 11 connects this battery 10 of a correspondence respectively, can be used for the voltage of battery 10 at serial connection bus 100 two ends detecting each correspondence; And this battery controller 11 can be used for controlling the negative pole relay 322 of this negative pole time separated time 321 and the positive pole relay 312 of this positive pole time separated time 311.This battery controller 11 also can be used for the temperature measuring each battery 10.
One battery controller 40, can be used for the electric current controlling whole balancing circuitry, to reach the balance of respectively this battery 10 voltage.This battery controller 40 by a communication bus 50 (as RS-485, RJ-45 and other etc. communication modes) and connect the battery controller 11 of respectively this battery 10.Wherein this battery controller 40 also connects this balancer 20 by another communication bus 50; This battery controller 40 only has the positive pole relay 312 of a battery 10 can open with negative pole relay 322 when also controlling each operation, all the other all can be closed.
During operation, respectively this battery controller 11 measures the voltage of respectively this battery 10, and this voltage is sent back this battery controller 40, determine that voltage and average voltage deviate from excessive battery 10, to carry out the balance of electric current via this balancer 20 by this battery controller 40 according to logic decided at the higher level but not officially announced.After wherein this logic decided at the higher level but not officially announced can make to be averaged to all battery 10 voltage, get the ratio (as 20%) that the difference of this battery 10 voltage and average voltage is predetermined more than, namely think deviate from excessive, so must the balance of voltage be carried out.
This balancer 20 reported by the battery 10 that now this battery controller 40 must carry out the balance of voltage, and notifies that the battery controller 11 of this battery 10 is with the positive pole relay 312 of the negative pole relay 322 and this positive pole time separated time 311 that are communicated with this negative pole time separated time 321.And make this battery 10 and balancer 20 form a current circuit be communicated with.
When carrying out balance of voltage operation, balancer 20 passes through set up balancing circuitry bus 30 and boosts or step-down to this battery 10, and applies this bus 100 and carry out the distribution of voltage to remaining battery 10 and make the voltage convergence mean value of each battery 10.In equilibrium process, this battery controller 40 constantly calculates the voltage of battery 10 and the difference of average voltage level that need to carry out balancing in addition.When this difference is lower than a permissible value preset (as deviation value 5%), then stop this balance play, and make the battery controller 11 of this battery 10 turn off the negative pole relay 322 of this negative pole time separated time 321 and the positive pole relay 312 of this positive pole time separated time 311, therefore complete the operation of the balance of voltage.
So the utility model only uses single balancer to coordinate this battery controller can reach the object of each cell voltage of balance, and unnecessary electricity can be drawed from one to make good the deficits of another the object that other battery can reach and save the energy.Moreover do discharge and recharge without use battery pack, the overall object that also can reach environmental protection.
Above-described embodiment is only for clearly illustrating that the utility model creates example, and not the utility model is created to the restriction of embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All within spirit of the present utility model and principle any apparent change of extending out or variation be still among the protection range of this claim.
Claims (3)
1. single balancer balances a battery energy storage system for many cell voltages, it is characterized in that, comprising:
Several battery, wherein this several battery connects a total bus in the mode of series connection, and this bus can connect extraneous electric power system;
One balancer, it has balance of voltage function, connects this bus, for balancing the voltage of each battery, to prevent the voltage of some battery relative to the overtension or too low of other battery;
One balancing circuitry bus, comprise a positive pole winding displacement and a negative pole winding displacement, wherein one end of this positive pole winding displacement connects the positive input terminal of this balancer, the other end is then divided into the multiple and positive pole connect time separated time, respectively the end of this positive pole time separated time is connected to the cathode output end of each corresponding battery, in the battery of correspondence, respectively this positive pole time separated time comprises the positive pole relay of a correspondence, and this positive pole relay can be used for the electric current of control flow check through this positive pole time separated time;
One end of this negative pole winding displacement connects the negative input end of this balancer, the other end is then divided into the multiple and negative pole connect time separated time, respectively the end of this negative pole time separated time is connected to the cathode output end of each corresponding battery, in the battery of correspondence, respectively this negative pole time separated time comprises the negative pole relay of a correspondence, and this negative pole relay can be used for the electric current of control flow check through this negative pole time separated time;
Each battery is connected in series this balancer by this corresponding positive pole time separated time and this negative pole time separated time, and forms a power balance loop with this bus, makes electricity that is unnecessary in each battery or that lack can reach the balance with other battery by this primary Ioops;
Several battery controller, wherein each this battery controller connects this battery of a correspondence respectively, to detect the voltage of battery at serial connection bus two ends of each correspondence; And this battery controller can be used for controlling the negative pole relay of this negative pole time separated time and the positive pole relay of this positive pole time separated time;
One battery controller, can be used for the electric current controlling whole balancing circuitry, to reach the balance of respectively this cell voltage, this battery controller is by a communication bus and connect the battery controller of respectively this battery, and wherein this battery controller also connects this balancer by another communication bus; This battery controller also controls to only have the positive pole relay of a battery and negative pole relay to open when operating at every turn, and all the other all can be closed.
2. single balancer as claimed in claim 1 balances the battery energy storage system of many cell voltages, it is characterized in that, this battery controller measures the voltage of respectively this battery, and this voltage is sent back this battery controller, determine that voltage and average voltage deviate from excessive battery by this battery controller according to logic decided at the higher level but not officially announced, to carry out the balance of electric current via this balancer, after wherein this logic decided at the higher level but not officially announced can make to be averaged to all cell voltages, get the ratio that the difference of this cell voltage and average voltage is predetermined more than, namely think deviate from excessive, so must the balance of voltage be carried out,
Now this battery controller must carry out this balancer of battery reporting of the balance of voltage, and notify that the battery controller of this battery is with the positive pole relay of the negative pole relay and this positive pole time separated time that are communicated with this negative pole time separated time, and make this battery and balancer form a current circuit be communicated with.
3. single balancer as claimed in claim 2 balances the battery energy storage system of many cell voltages, it is characterized in that, this balancer passes through set up balancing circuitry bus and boosts or step-down to this battery, and applies this bus and carry out the distribution of voltage to remaining battery and make the voltage convergence mean value of each battery; In addition in equilibrium process this battery controller constantly calculate need carry out the voltage of the battery balanced and the difference of average voltage level, when this difference lower than one preset permissible value time, then stop this balance play, and make the battery controller of this battery turn off the negative pole relay of this negative pole time separated time and the positive pole relay of this positive pole time separated time, therefore complete the operation of the balance of voltage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103214914U TWM491988U (en) | 2014-08-20 | 2014-08-20 | Battery energy storage system (BESS) using single balancer to balance voltage of multiple cells |
| TW103214914 | 2014-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204376468U true CN204376468U (en) | 2015-06-03 |
Family
ID=52576973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520031456.4U Active CN204376468U (en) | 2014-08-20 | 2015-01-16 | Battery energy storage system with single balancer for balancing voltages of multiple batteries |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204376468U (en) |
| TW (1) | TWM491988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000275A1 (en) * | 2015-07-01 | 2017-01-05 | 长园科技实业股份有限公司 | Power storage battery power supply system |
-
2014
- 2014-08-20 TW TW103214914U patent/TWM491988U/en unknown
-
2015
- 2015-01-16 CN CN201520031456.4U patent/CN204376468U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000275A1 (en) * | 2015-07-01 | 2017-01-05 | 长园科技实业股份有限公司 | Power storage battery power supply system |
| US9906051B2 (en) | 2015-07-01 | 2018-02-27 | Changs Ascending Enterprise Co., Ltd. | Power supply system using energy storage cell |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM491988U (en) | 2014-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108819747B (en) | Multi-branch power distribution management for multi-branch energy storage system | |
| CN102882242B (en) | Circuit for charging and discharging balance of storage battery pack | |
| CN102280912B (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN105429212A (en) | Battery pack voltage equalization control circuit and battery management equipment | |
| CN103094938B (en) | Battery series-parallel connection self-balancing device | |
| CN104993602A (en) | Modular energy storage system | |
| CN107275694B (en) | Distributed storage battery equalization device and method with both active equalization and passive equalization | |
| CN204230982U (en) | Large Electric car battery supplied system | |
| CN105162215A (en) | Distributed battery management system and method for lead-acid storage battery pack equalization | |
| CN101599657A (en) | The PWM shunting realizes the method for dynamic voltage balancing of battery pack in charging state | |
| CN208904691U (en) | Electric flux switching equipment, cell apparatus and battery maintenance system | |
| CN103915875A (en) | Lithium battery charging and discharging control system for novel solar street lamp | |
| CN204376468U (en) | Battery energy storage system with single balancer for balancing voltages of multiple batteries | |
| CN203481854U (en) | Battery management device, power system and energy storage power station | |
| CN108039756A (en) | A kind of dynamic reconfiguration method and its balance control system of electric system storage battery | |
| CN202906507U (en) | Distributed cell power supply device and method thereof | |
| CN112134319A (en) | Energy feedback type echelon battery charging and discharging balancing system and control method thereof | |
| CN204334038U (en) | The charge/discharge balancing system of power battery pack | |
| CN203607876U (en) | A battery equalization management apparatus | |
| CN105702980B (en) | A kind of online control method and its system for restoring flow battery system performance | |
| CN207166152U (en) | A kind of distributed energy storage system and its control system | |
| CN104734263A (en) | Current sharing control system and method | |
| CN201854071U (en) | Battery pack charging management system | |
| TWM519347U (en) | Large-capacity energy-storage power supply system capable of replacing battery module at site and comprising buffer battery and battery set | |
| CN204441937U (en) | Multi-channel parallel lithium battery group management control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |