CN209233536U - Compensation circuit, energy-storage system for energy-storage system - Google Patents
Compensation circuit, energy-storage system for energy-storage system Download PDFInfo
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- CN209233536U CN209233536U CN201920096303.6U CN201920096303U CN209233536U CN 209233536 U CN209233536 U CN 209233536U CN 201920096303 U CN201920096303 U CN 201920096303U CN 209233536 U CN209233536 U CN 209233536U
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Abstract
The utility model discloses the compensation circuits for energy-storage system, energy-storage system, the energy-storage system includes battery manager (4), the first battery pack (1) and the first battery pack of connection and external positive and negative polarity wire, it is characterized in that, the compensation circuit includes the second battery pack (2), the compensator (3) being connect with battery manager, the compensator is used for DC converting, third manual switch QF3, the charge or discharge of battery manager control second battery pack and the first battery pack are equipped between the compensator and the second battery pack；Compared with prior art, the problem of can not working of breaking down is placed under the utility model effective solution energy-storage system low pressure for a long time, only increases a small amount of prototype part on the basis of original circuit, there is reliable operation, structure is simple, advantage low in cost.
Description
Technical field
The utility model relates to energy-storage system more particularly to a kind of compensation circuits for energy-storage system, energy-storage system.
Background technique
The energy storage units of energy-storage system generally comprise multiple batteries or mould group, since lithium battery itself has self discharge
Characteristic, placing for a long time under low pressure when energy-storage system can make system self discharge serious, discharge it is serious after electricity in lithium battery
Become seldom.Due to needing to keep certain lithium ion to be just able to maintain the stabilization of structure in battery cathode, over-discharge makes more lithiums
Ion is moved out, and the rock-steady structure of cathode is destroyed, and causes the irreversible damage of cathode.Self-discharge of battery seriously can, control system
It does not instruct in the charging and discharging of respective external, even into state of paralysis, can not independently resume work so as to cause energy-storage system.
Therefore, it needs in the industry to develop a kind of compensation circuit, power compensation can be carried out when energy-storage system self discharge is serious,
Energy-storage system is set to restore to work normally.
Utility model content
In order to solve the self discharge existing in the prior art defect that seriously rear system can not independently be restored, the utility model
It is proposed a kind of compensation circuit for energy-storage system, energy-storage system.
The technical solution adopted in the utility model is to design a kind of compensation circuit for energy-storage system, and one kind being used for energy storage
The compensation circuit of system, the energy-storage system include battery manager, the first battery pack and the first battery pack of connection and outside
Positive and negative polarity wire, which is characterized in that the compensation circuit includes the second battery pack, the compensator connecting with battery manager, institute
Compensator is stated for DC converting, third manual switch QF3, the cell tube are equipped between the compensator and the second battery pack
Manage the charge or discharge of device control the second battery pack and the first battery pack.
The second manual switch QF2 is equipped between the compensator and the positive and negative polarity wire.
The third manual switch QF3 is in parallel with first switch K1, and the first switch K1 is controlled by battery manager.
First manual switch QF1 is concatenated on the positive wire and cathode conductor, is leaning on conducting wire external interface side just
The second manual switch QF2 is concatenated between polar conductor and cathode conductor and the compensator, is leaning on conducting wire external interface just
Second switch K2 is concatenated on polar conductor or cathode conductor, is concatenated on the positive wire or cathode conductor by the first battery pack side
Third switch K3, the second switch K2 and third switch K3 are controlled by battery manager.
The compensation circuit further includes touch display screen, which is powered by the compensator.
Equalizing circuit is equipped in the battery manager, in third manual switch QF3 closure, second battery pack can
Equalizing circuit in compensator and battery manager is passed sequentially through to the first battery pack electric energy supplement.
The utility model discloses a kind of energy-storage system, the energy-storage system uses above-mentioned compensation circuit.
Compared with prior art, failure nothing is placed for a long time under the utility model effective solution energy-storage system low pressure
The problem of method works, only increases a small amount of prototype part on the basis of original circuit, has reliable operation, structure is simple, cost
Cheap advantage.
Detailed description of the invention
The utility model is described in detail below with reference to embodiment and attached drawing, in which:
Fig. 1 is the utility model preferred embodiment functional block diagram；
Fig. 2 is the utility model preferred embodiment control flow chart.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is described in further detail the utility model.It should be appreciated that specific embodiment described herein is used only for explaining this
Utility model is not used to limit the utility model.
Second battery pack 2 is arranged in the utility model, for mending after 1 over-discharge of the first battery pack to the first battery pack 1
Charging energy, is allowed to work back to normal.
The utility model discloses a kind of compensation circuit for energy-storage system, a kind of compensation electricity for energy-storage system
Road, the energy-storage system include the positive and negative polarity wire of battery manager 4, the first battery pack 1 and the first battery pack of connection and outside,
It is characterized in that, the compensation circuit includes the second battery pack 2, the compensator 3 connecting with battery manager, the compensator use
It is equipped with third manual switch QF3 between DC converting, the compensator and the second battery pack, battery manager control the
The charge or discharge of two battery packs and the first battery pack.Second is equipped between the compensator 3 and the positive and negative polarity wire manually
Switch QF2.When 1 over-discharge of the first battery pack can not normally start, battery manager 4 controls the second battery pack 2 and passes sequentially through benefit
Device 3 and battery manager 4 are repaid to 1 electric energy supplement of the first battery pack, the voltage to the first battery pack 1 is higher than over-discharge threshold value Shi Zailing
First battery pack 1 connects external normal work.
Referring to preferred embodiment shown in fig. 1, the third manual switch QF3 is in parallel with first switch K1, and described first
Switch K1 is controlled by battery manager 4.First manual switch QF1 is concatenated on the positive wire and cathode conductor, is leaning on conducting wire
The second manual switch QF2 is concatenated between the positive wire and cathode conductor of external interface side and the compensator 3, is being leaned on
Second switch K2 is concatenated on the positive wire or cathode conductor of conducting wire external interface, is led in the anode by 1 side of the first battery pack
Third switch K3, the second switch K2 and third switch K3 is concatenated on line or cathode conductor to be controlled by battery manager 4.It is described
Compensation circuit further includes touch display screen 5, which is powered by the compensator 3.It is set in the battery manager 4
There is equalizing circuit, in third manual switch QF3 closure, second battery pack 2 can pass sequentially through compensator 3 and cell tube
The equalizing circuit in device 4 is managed to 1 electric energy supplement of the first battery pack.
When the first battery pack 1 works normally, compensator 3 takes electricity from the first battery pack 1, supplies electricity to battery manager
4BMS, touch display screen 5, and charge or discharge are carried out to the first battery pack 1 by sending instructions under touch display screen 5.At this time
A manual switch QF1 and the second manual switch QF2, second switch K2 and third switch K3 are closure conducting, the first battery pack 1
Electric energy access can be carried out with outside.In charging, after voltage difference reaches certain value between battery, BMS starts equalization function,
Pressure difference battery is carried out balanced, pressure difference is in a certain range between finally making battery.
When the first battery pack 1 is because the time stands when leading to occur battery over-discharge, compensator 3 can take from the second battery pack 2
Electricity supplies electricity to BMS, and BMS is that the first battery pack 1 charges using the equalizing circuit of itself, finally makes the event of the first battery pack 1
Barrier is eliminated, to make system worked well.
The utility model discloses a kind of energy-storage system, the energy-storage system uses above-mentioned compensation circuit.
The utility model discloses the control methods of the energy-storage system, comprising the following steps: when the first battery pack 1 is normal
When work, first battery pack of the control of battery manager 41 carries out charge or discharge with external connection；When 1 over-discharge of the first battery pack without
When method normally starts, battery manager 4 controls the second battery pack 2 and passes sequentially through compensator 3 and battery manager 4 to the first battery
1 electric energy supplement is wrapped, enables the first battery pack 1 connect external normal work again when the voltage of the first battery pack 1 is higher than over-discharge threshold value.
The control method enables the following steps are included: be first closed first manual switch QF1 and the second manual switch QF2
One battery pack 1 connects compensator 3, and compensator 3 is powered to touch display screen 5 and battery manager 4, by observing touch display screen
5 whether it is electric judge the first battery pack 1 whether overdischarge.
It is closed third manual switch QF3 after judging 1 overdischarge of the first battery pack, the second battery pack 2 is passed through into compensation
Device 3 temporarily connection battery manager 4, battery manager 4 it is electric after control first switch K1 closure, the second battery pack 2 is connected
Compensator 3.
Enable the second battery pack 2 to before 1 electric energy supplement of the first battery pack, first detect the second battery pack 2 voltage whether
Higher than threshold value, if so, then enabling the second battery pack 2 to 1 electric energy supplement of the first battery pack；If not, electric to second with external power supply
2 charging of pond packet, enables the second battery pack 2 to 1 electric energy supplement of the first battery pack again when the voltage of the second battery pack 2 is higher than threshold value.
Referring to Fig. 2 shows preferred embodiment flow chart, the control method is the following steps are included: step 1. closure the
A manual switch QF1 and the second manual switch QF2, the first battery pack 1 connect compensator 3 and are shown by compensator 3 to touch
5 power supply of screen；Step 2. judge compensator 3 and touch display screen 5 whether it is electric, such as it is electric, then go to step 6；Step 3. closure
Third manual switch QF3；Step 4. compensator 3, touch display screen 5 and battery manager 4 obtain electric；Step 5. battery manager 4
Control first switch K1 closure；Whether the voltage that step 6. battery manager 4 detects the second battery pack 2 is greater than threshold value, if so, then
Go to step 8；Step 7. battery manager 4 is closed second switch K2, disconnects third switch K3, and external power supply is to the second battery pack 2
Charging, goes to step 6；Whether the voltage that step 8. battery manager 4 detects the first battery pack 1 is greater than over-discharge threshold value, if so, then turning
Step 10；Second battery pack of step 9. 2 passes sequentially through the equalizing circuit inside compensator 3 and battery manager 4 to the first battery
Failure can be released after wrapping general 30 min of 1 electric energy supplement, goes to step 8；Step 10. is closed second switch K2 and third switch K3,
First switch K1 is disconnected, starting terminates.
After the starting, the electricity of the second battery pack 2 is detected, when the electricity of the second battery pack 2 is lower than power threshold
When, control compensator 3 charges to the second battery pack 2, its electricity is made to reach setting value.Guarantee the electricity in the second battery pack 2 whereby
Amount is sufficient, can be at any time to 1 electric energy supplement of the first battery pack.
It should be understood that the threshold value, over-discharge threshold value, power threshold, setting value, according to different energy-storage systems, different model
Battery, parameter value will be different, herein without limitation.
Above embodiments are by way of example only, non-to provide constraints.It is any without departing from the application spirit and scope, and to it
The equivalent modifications or change of progress, shall be included in the scope of claims of this application.
Claims (7)
1. a kind of compensation circuit for energy-storage system, the energy-storage system includes battery manager (4), the first battery pack (1)
With the first battery pack of connection and external positive and negative polarity wire, which is characterized in that the compensation circuit includes the second battery pack (2),
The compensator (3) connecting with battery manager, the compensator is used for DC converting, between the compensator and the second battery pack
Equipped with third manual switch QF3, the charge or discharge of battery manager control second battery pack and the first battery pack.
2. compensation circuit as described in claim 1, which is characterized in that between the compensator (3) and the positive and negative polarity wire
Equipped with the second manual switch QF2.
3. compensation circuit as claimed in claim 2, which is characterized in that the third manual switch QF3 and first switch K1 are simultaneously
Connection, the first switch K1 are controlled by battery manager (4).
4. compensation circuit as claimed in claim 3, which is characterized in that concatenated on the positive wire and cathode conductor first-hand
Switch QF1 is moved, is equipped with the first wiring point C1 in the positive wire section between first manual switch QF1 and conducting wire external interface,
The second wiring point C2 is equipped in cathode conductor section between first manual switch QF1 and conducting wire external interface, described first connects
The second manual switch QF2 is concatenated between line point C1 and the second wiring point C2 and the compensator (3), in the first wiring point C1
It is concatenated in the positive wire section of the external interface or in the second wiring point C2 and the cathode conductor section of the external interface
Second switch K2, in the positive wire section of the first wiring point C1 and first battery pack or the second wiring point C2 and institute
It states and concatenates third switch K3, the second switch K2 and third switch K3 in the cathode conductor section of the first battery pack by battery management
Device (4) control.
5. compensation circuit as described in claim 1, which is characterized in that further include touch display screen (5), the touch display screen by
Compensator (3) power supply.
6. compensation circuit as described in claim 1, which is characterized in that equalizing circuit is equipped in the battery manager (4),
When third manual switch QF3 is closed, second battery pack (2) can pass sequentially through equal in compensator (3) and battery manager
Circuit weigh to the first battery pack (1) electric energy supplement.
7. a kind of energy-storage system, which is characterized in that the energy-storage system is using compensation electricity as claimed in any one of claims 1 to 6
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096303.6U CN209233536U (en) | 2019-01-21 | 2019-01-21 | Compensation circuit, energy-storage system for energy-storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096303.6U CN209233536U (en) | 2019-01-21 | 2019-01-21 | Compensation circuit, energy-storage system for energy-storage system |
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| Publication Number | Publication Date |
|---|---|
| CN209233536U true CN209233536U (en) | 2019-08-09 |
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ID=67510651
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920096303.6U Active CN209233536U (en) | 2019-01-21 | 2019-01-21 | Compensation circuit, energy-storage system for energy-storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638926A (en) * | 2019-01-21 | 2019-04-16 | 珠海格力电器股份有限公司 | For the compensation circuit of energy-storage system, energy-storage system and control method |
-
2019
- 2019-01-21 CN CN201920096303.6U patent/CN209233536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638926A (en) * | 2019-01-21 | 2019-04-16 | 珠海格力电器股份有限公司 | For the compensation circuit of energy-storage system, energy-storage system and control method |
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