CN220732407U - Energy storage unit - Google Patents
Energy storage unit Download PDFInfo
- Publication number
- CN220732407U CN220732407U CN202322174528.8U CN202322174528U CN220732407U CN 220732407 U CN220732407 U CN 220732407U CN 202322174528 U CN202322174528 U CN 202322174528U CN 220732407 U CN220732407 U CN 220732407U
- Authority
- CN
- China
- Prior art keywords
- energy storage
- converter
- battery cluster
- battery
- storage unit
- 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 118
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 claims description 9
- 102100021298 b(0,+)-type amino acid transporter 1 Human genes 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 8
- 230000001502 supplementing effect Effects 0.000 abstract description 7
- 101150003196 PCS1 gene Proteins 0.000 description 16
- 101100493726 Phalaenopsis sp. BIBSY212 gene Proteins 0.000 description 16
- 101100030895 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RPT4 gene Proteins 0.000 description 16
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000012827 research and development Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses an energy storage unit belongs to energy storage unit technical field. The energy storage unit includes: a plurality of battery clusters; at least one DC-DC converter mounted to a first battery cluster, the first battery cluster being any one of the plurality of battery clusters; and a first port of the DC-DC converter is connected in series with the first battery cluster, and a second port of the DC-DC converter is connected in parallel with a second battery cluster, wherein the second battery cluster is any battery cluster except the first battery cluster in the plurality of battery clusters. The energy storage unit avoids the situation that the field battery cluster cannot be subjected to electricity supplementing through the energy storage converter unit; and the DC-DC converter connected in series has smaller power, the whole size is controllable, and the battery clusters can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the field battery clusters is facilitated.
Description
Technical Field
The application belongs to energy storage unit technical field, especially relates to an energy storage unit.
Background
Under the condition of power shortage of the battery cluster, timely maintenance is needed to ensure that the battery cluster can be charged and discharged normally through the energy storage converter. In the related art, a mode of supplementing electricity to a battery cluster by adding an alternating current power grid exists, the mode needs to provide a power grid on site, an original communication link needs to be modified, construction is complex, and maintenance to the on-site battery cluster is not facilitated; besides, the tool is connected into the original BMS system, the tool size is large, and the material cost is high.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the energy storage unit is provided, and the situation that the power cannot be supplemented through the energy storage converter unit due to the fact that the power is insufficient in the field battery cluster is avoided; and the DC-DC converter connected in series has smaller power, the whole size is controllable, and the battery clusters can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the field battery clusters is facilitated.
In a first aspect, the present application provides an energy storage unit, the apparatus comprising:
a plurality of battery clusters;
at least one DC-DC converter mounted to a first battery cluster, the first battery cluster being any one of the plurality of battery clusters; and a first port of the DC-DC converter is connected in series with the first battery cluster, and a second port of the DC-DC converter is connected in parallel with a second battery cluster, wherein the second battery cluster is any battery cluster except the first battery cluster in the plurality of battery clusters.
According to the energy storage unit provided by the embodiment of the application, the first port of the DC-DC converter is connected in series to the first battery cluster, the second port of the DC-DC converter is connected in parallel to the second battery cluster, and the direct-current side voltage of the energy storage converter unit corresponding to the first battery cluster can be lifted in application, so that the situation that the power cannot be supplemented through the energy storage converter unit due to the power shortage of the field battery cluster is avoided; and the DC-DC converter connected in series has smaller power, the whole size is controllable, and the battery clusters can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the field battery clusters is facilitated.
The energy storage unit of an embodiment of the present application further includes:
the energy storage converter units are in one-to-one correspondence with the battery clusters; the energy storage converter unit is connected with the battery cluster corresponding to the energy storage converter in series, and the first port is connected between the first battery cluster and the positive electrode of the energy storage converter unit corresponding to the first battery cluster in series.
According to the energy storage unit provided by the embodiment of the application, the plurality of energy storage converter units are arranged, the first port of the DC-DC converter is connected in series between the first battery cluster and the positive electrode of the energy storage converter unit corresponding to the first battery cluster, the DC side voltage of the energy storage converter unit corresponding to the first battery cluster can be lifted through the DC-DC converter, the energy storage converter unit is used for supplementing electricity to the first battery cluster, the high-voltage side port is used for supplementing electricity to the second battery cluster, and the situation that the electricity cannot be supplemented through the energy storage converter when the battery cluster is seriously deficient is avoided.
The energy storage unit comprises a first port, a second port, a first power supply and a second power supply, wherein the first port comprises a first positive electrode interface and a first negative electrode interface, and the second port comprises a second positive electrode interface and a second negative electrode interface; the first positive electrode interface is connected with the positive electrode of the energy storage converter unit corresponding to the first battery cluster, the first negative electrode interface is connected with the positive electrode of the first battery cluster, the second positive electrode interface is connected with the positive electrode of the second battery cluster, and the second negative electrode interface is connected with the negative electrode of the second battery cluster.
The energy storage unit of one embodiment of the present application further comprises a plurality of first fuses, and the first fuses are connected between the energy storage converter unit and the DC-DC converter.
The energy storage unit of one embodiment of the present application further comprises a transformer, and the transformer is connected with the plurality of battery clusters.
The energy storage unit of one embodiment of the application further comprises a second fuse, wherein the second fuse is connected between the energy storage converter unit and the transformer.
The energy storage unit of one embodiment of the present application further comprises a first switch connected between the second fuse and the transformer.
The energy storage unit of one embodiment of the present application further comprises a circuit breaker, wherein the circuit breaker is connected between the first switch and the transformer.
In the energy storage unit of one embodiment of the application, the DC-DC converter is arranged in an isolated topology structure.
The energy storage unit of one embodiment of the present application, the isolated topology structure includes: isolated phase-shifted full bridge, CLLC resonant or dual active bridge.
In the energy storage unit according to one embodiment of the present application, the power of the DC-DC converter is between 10kW and 20 kW.
In the energy storage unit according to one embodiment of the present application, the dc side voltage of the energy storage converter unit corresponding to the first battery cluster satisfies the following conditionWherein V is BAT1 For the working voltage of the first battery cluster, vac is an alternating voltage, V DC1# Is the operating voltage of the DC-DC converter.
In the energy storage unit according to one embodiment of the present application, the operating voltage of the first battery cluster is not less thanWherein Vac is the ac voltage.
The above technical solutions in the embodiments of the present application have at least one of the following technical effects:
the first port of the DC-DC converter is connected in series with the first battery cluster, the second port of the DC-DC converter is connected in parallel with the second battery cluster, and the direct-current side voltage of the energy storage converter unit corresponding to the first battery cluster can be lifted in application, so that the situation that the power cannot be supplemented by the energy storage converter unit due to the power shortage of the on-site energy storage unit is avoided; and the DC-DC converter connected in series has smaller power, the whole size is controllable, and the energy storage unit can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the on-site energy storage unit is facilitated.
Further, through setting up a plurality of energy storage converter units to connect in series the first port of DC-DC converter and between the positive pole of the energy storage converter unit that first battery cluster corresponds, can rise the direct current side voltage of the energy storage converter unit that corresponds with first battery cluster through the DC-DC converter, and supply power to first battery cluster through the energy storage converter, and supply power to the second battery cluster through high-voltage side interface, avoided the energy storage unit to supply power when the power consumption is serious the condition that can't carry out the power supply through the energy storage converter.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
fig. 1 is a schematic structural diagram of an energy storage unit according to an embodiment of the present disclosure;
FIG. 2 is a second schematic diagram of an energy storage unit according to an embodiment of the present disclosure;
FIG. 3 is a third schematic diagram of an energy storage unit according to an embodiment of the present disclosure;
fig. 4 is a logic diagram of execution of the energy storage unit according to the embodiment of the present application.
Reference numerals:
a battery cluster BT; an energy storage converter unit PCS; a first fuse FU1; a second fuse FU2;
a first switch K; a circuit breaker QF1; and a transformer T.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
1. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
2. In the description of the present application, the meaning of "plurality" is two or more.
The energy storage unit of the embodiment of the present application is described below with reference to fig. 1 to 4.
As shown in fig. 1, the energy storage unit includes: a plurality of battery clusters and at least one DC-DC converter.
In this embodiment, the DC-DC converter is mounted to any one of the plurality of battery clusters BT.
In case of a battery cluster BT being deficient, a DC-DC converter may be installed for power replenishment.
The DC-DC converter may be delta-type, as shown in fig. 1, and in this structure, the DC-DC converter includes two ports: the first port and the second port can be respectively connected with the first battery cluster BT and the second battery cluster BT in application.
The mass of the components such as the reactor in the DC-DC converter is small, and the overall size of the DC-DC converter can be based on the use for customization.
The power of the DC-DC converter can be between 10kW and 20kW, and can be customized based on users, and the power is not limited in the application.
The DC-DC converter may include a first port and a second port.
The first port of the DC-DC converter is connected in series with the first battery cluster BT, and the second port of the DC-DC converter is connected in parallel with the second battery cluster BT.
Wherein the first battery cluster BT is any battery cluster BT of the plurality of battery clusters BT;
the second battery cluster BT is any battery cluster BT other than the first battery cluster BT among the plurality of battery clusters BT, for example, the second battery cluster BT may be a battery cluster BT adjacent to the first battery cluster BT or may be a battery cluster BT not adjacent to the first battery cluster BT.
In some embodiments, the DC-DC converter may be configured in an isolated topology.
In this embodiment, the isolated topology may include isolated phase-shifted full bridge, CLLC resonance, DAB (dual active bridge), etc., and may be user-defined based, without limitation, in this application.
In the method, the optimal isolation type topological structure can be selected based on actual application scenes or requirements, so that the flexibility is high, and the application range is wide.
The inventor finds that in the research and development process, a mode of supplementing electricity to the battery cluster BT by adding an alternating current power grid exists in the related technology, the mode needs to provide the power grid on site, the original communication link needs to be modified, the construction is complex, and the maintenance to the on-site battery cluster BT is not facilitated; besides, the tool is connected into the original BMS system, the tool size is large, and the material cost is high.
In the application, the DC-DC converter with smaller power is connected in series in the first battery cluster BT, the overall size of the DC-DC converter is controllable, and the battery cluster BT can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the field battery cluster BT is facilitated.
According to the energy storage unit provided by the embodiment of the application, the first port of the DC-DC converter is connected in series to the first battery cluster BT, the second port of the DC-DC converter is connected in parallel to the second battery cluster BT, so that the direct-current side voltage of the PCS corresponding to the first battery cluster BT can be raised in application, and the situation that the power consumption of the field battery cluster BT cannot be supplemented through the PCS of the energy storage converter is avoided; and the DC-DC converter connected in series has smaller power, the whole size is controllable, and the battery cluster BT can be charged without independently connecting other external network power supplies, so that the material cost and the construction difficulty are reduced, and the maintenance of the field battery cluster BT is facilitated.
In some embodiments, the energy storage unit may further include: a plurality of energy storage converter cells PCS.
In this embodiment, as shown in fig. 1, the plurality of energy storage converter units PCS may be PCS1 to PCSN.
The plurality of energy storage converter units PCS are in one-to-one correspondence with the plurality of battery clusters BT.
The energy storage converter unit PCS is connected in series with the battery cluster BT.
In the case where the energy storage converter is PCS1, the battery cluster BT corresponding to PCS1 may be BT1; in the case where the energy storage converter is PCSN, the battery cluster BT corresponding to PCS1 may be BTN.
As shown in fig. 1, the battery cluster BT may include three batteries connected in series therebetween.
The first port of the DC-DC converter is connected in series between the first battery cluster BT and the positive electrode of the PCS of the energy storage converter unit corresponding to the first battery cluster BT.
In the actual execution process, under the condition of BTI power deficiency, a DC1# interface of the DC-DC converter can be connected in series to be connected with the BT1, and a DC2# interface of the high-voltage side can be connected in parallel to be connected with the battery cluster BT2;
the DC-DC converter can temporarily raise the voltage of the direct current side of the BT1 to be higher than the lowest voltage of the normal operation of the PCS1#, and supplement electricity to the BT1 through the PCS1#, and the DC1# interface of the DC-DC converter inputs power through the PCS1#, and supplements electricity to the BT2 through the DC2# interface.
The inventor finds in the research and development process that in the related art, under the condition that the voltage of the battery cluster BT is lower than 0.9un×1.414 (0.9un is the normal grid voltage), the battery cluster BT cannot be supplied with power through the energy storage converter unit PCS.
In the application, the DC1# interface of the DC-DC converter is connected in series to the BT1, the DC2# interface of the high-voltage side is connected in parallel to the second battery cluster BT2, the voltage of the DC side of the BT1 can be raised to be higher than the lowest voltage of the normal running of the PCS1# and the power is supplemented to the BT1 through the PCS1#, the DC1# interface of the DC-DC converter is powered by the PCS1# and the power is supplemented to the BT2 through the DC2# interface, and the situation that the power cannot be supplemented through the energy storage converter when the power shortage of the battery cluster BT is serious is avoided.
According to the energy storage unit provided by the embodiment of the application, the plurality of energy storage converter units PCS are arranged, the first port of the DC-DC converter is connected in series between the first battery cluster BT and the positive electrode of the energy storage converter unit PCS corresponding to the first battery cluster BT, the DC side voltage of the energy storage converter unit PCS corresponding to the first battery cluster BT can be lifted through the DC-DC converter, the power is supplemented to the first battery cluster BT through the energy storage converter unit PCS, the power is supplemented to the second battery cluster BT through the high-voltage side port, and the situation that the power cannot be supplemented through the energy storage converter when the battery cluster BT is seriously deficient is avoided.
In some embodiments, the first port of the DC-DC converter may include a first positive interface and a first negative interface, and the second port may include a second positive interface and a second negative interface.
In this embodiment, the first positive electrode interface is connected to the positive electrode of the energy storage converter unit PCS corresponding to the first battery cluster BT.
The first negative electrode interface is connected with the positive electrode of the first battery cluster BT.
The second positive electrode interface is connected with the positive electrode of the second battery cluster BT.
The second negative electrode interface is connected with the negative electrode of the second battery cluster BT.
As shown in fig. 1, a first positive electrode interface of the DC-DC converter may be connected to the positive electrode of the PCS1, a first negative electrode interface may be connected to the positive electrode of the BT1, a second positive electrode interface may be connected to the positive electrode of the BT2, and a second negative electrode interface may be connected to the negative electrode of the BT 2.
In some embodiments, when the operating voltage of the target battery cluster BT of the plurality of battery clusters BT is less than the target ac voltage, the DC-DC converter is connected in series to the target battery cluster BT, and the DC-DC converter is connected in parallel to any battery cluster BT of the plurality of battery clusters BT other than the target battery cluster BT.
In this embodiment, the target battery cluster BT is any battery cluster BT of the plurality of battery clusters BT.
The operating voltage of the battery cluster BT may be a battery side voltage of the battery cluster BT.
The target ac voltage may be 0.88×1.414×vac+20, where Vac is the ac voltage.
In the actual implementation, the operating voltage of the battery cluster BT1 included in the target battery cluster BT may be expressed as V BAT1 At V BAT1 <Under the condition of 0.88 x 1.414 x vac+20, the DC-DC converter is connected in series to the target battery cluster BT, and is connected in parallel to any battery cluster BT except the target battery cluster BT in the plurality of battery clusters BT.
According to the energy storage unit provided by the embodiment of the application, under the condition that the working voltage of the target battery cluster BT in the battery clusters BT is smaller than the target alternating voltage, the DC-DC converter is connected in series to the target battery cluster BT, and is connected in parallel to any battery cluster BT except the target battery cluster BT in the battery clusters BT, the DC side voltage of the PCS of the energy storage converter unit in the first battery cluster BT can be raised through the DC-DC converter, and the first battery cluster BT is supplemented with power through the energy storage converter, and the second battery cluster BT is supplemented with power through the high-voltage side interface, so that the situation that the power supplement of the battery cluster BT cannot be carried out through the energy storage converter when the power shortage of the battery cluster BT is serious is avoided.
As shown in fig. 2, in some embodiments, the energy storage unit may further include a first fuse FU1.
In this embodiment, the first fuse FU1 is connected between the energy storage converter unit PCS and the DC-DC converter.
The plurality of battery clusters BT may correspond to the plurality of first fuses FU1.
The plurality of battery clusters BT are in one-to-one correspondence with the plurality of first fuses FU1.
The first fuse FU1 is used to protect the circuit in case of a short circuit or an overcurrent.
For example, when the current exceeds a predetermined value, the first fuse FU1 fuses the melt by heat generated by itself, and opens the circuit.
In some embodiments, the energy storage unit may further include a transformer T.
In this embodiment, the transformer T is connected to a plurality of battery clusters BT.
In some embodiments, the energy storage unit may further include a second fuse FU2.
In this embodiment, the second fuse FU2 is connected between the energy storage converter unit PCS and the transformer T.
The plurality of battery clusters BT may correspond to the plurality of second fuses FU2.
The plurality of battery clusters BT are in one-to-one correspondence with the plurality of second fuses FU2.
The second fuse FU2 is used for protecting a circuit.
In some embodiments, the energy storage unit may further include a first switch K.
In this embodiment, the first switch K is connected between the second fuse FU2 and the transformer T.
The plurality of battery clusters BT may correspond to the plurality of first switches K.
In some embodiments, the energy storage unit may further include a circuit breaker QF1.
In this embodiment, the circuit breaker QF1 is connected between the first switch K and the transformer T.
The execution logic of the energy storage unit is described in detail below.
As shown in fig. 4, the DC-DC converter operates in a constant DC1# DC side voltage mode in which there is communication between the DC-DC converter and the energy storage converter unit PCS;
the operating voltage at the target battery cluster BT1 satisfies: v (V) BAT1 Under the condition that Vac+20 is not less than 0.88 x 1.414 x, disconnecting the PCS of the energy storage converter unit from the large power grid, wherein the PCS of the energy storage converter unit corresponding to the non-fed battery cluster BT operates in a VSG function to establish bus voltage, and the PCS of the energy storage converter unit in the target battery cluster BT1 operates in a PQ mode to charge the target battery cluster BT1 through other battery clusters BT;
at V BAT1 <In the case of vac+20, 0.88×1.414×1.414, the DC-DC converter is set to the low-side constant voltage mode: setting the command voltage corresponding to the DC-DC converter to 1.414 times Vac+70-V BAT1 Wherein V is BAT1 The operating voltage of BT1, vac is the alternating voltage;
then the energy storage converter unit PCS is set to a constant dc side power mode: p (P) PCS ＝0.5P Battery power limiting The direct-current side voltage of the energy storage converter unit PCS1# is ensured to meet the following conditions:wherein V is BAT1 The operating voltage of BT1, vac is the AC voltage, V DC1# Is the operating voltage of the DC-DC converter;
the energy storage converter unit PCS1# can charge the BT1, the DC1# interface voltage of the DC-DC converter is gradually reduced under the condition that the working voltage of the BT1 is gradually increased, and the energy storage converter unit PCS1# can charge the BT1In the case of (1), supplementing electricity to BT1 through the grid side via the serial PCS, and as shown in FIG. 3, the PCS1 exits operation;
in the process of supplementing power to BT1 by PCS1#, when the working voltage of BT1 is gradually increased, the voltage at two ends of the DC-DC converter is gradually reduced, the power of the DC-DC converter is gradually reduced, and the charging power of the DC-DC converter to BT2 is slowly reduced.
In the application, the battery cluster BT can be slowly charged by matching with a control strategy of software, so that the situation that the voltage of the battery cluster BT after the charging still does not meet the minimum running direct-current voltage of the PCS is avoided.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. An energy storage unit, comprising:
a plurality of battery clusters;
at least one DC-DC converter mounted to a first battery cluster, the first battery cluster being any one of the plurality of battery clusters; and a first port of the DC-DC converter is connected in series with the first battery cluster, and a second port of the DC-DC converter is connected in parallel with a second battery cluster, wherein the second battery cluster is any battery cluster except the first battery cluster in the plurality of battery clusters.
2. The energy storage unit of claim 1, further comprising:
the energy storage converter units are in one-to-one correspondence with the battery clusters; the energy storage converter unit is connected with the battery cluster corresponding to the energy storage converter in series, and the first port is connected between the first battery cluster and the positive electrode of the energy storage converter unit corresponding to the first battery cluster in series.
3. The energy storage unit of claim 2, wherein the first port comprises a first positive interface and a first negative interface, and the second port comprises a second positive interface and a second negative interface; the first positive electrode interface is connected with the positive electrode of the energy storage converter unit corresponding to the first battery cluster, the first negative electrode interface is connected with the positive electrode of the first battery cluster, the second positive electrode interface is connected with the positive electrode of the second battery cluster, and the second negative electrode interface is connected with the negative electrode of the second battery cluster.
4. The energy storage unit of claim 2, further comprising a plurality of first fuses connected between the energy storage converter unit and the DC-DC converter.
5. The energy storage unit of claim 2, further comprising a transformer connected to the plurality of battery clusters.
6. The energy storage unit of claim 5, further comprising a second fuse connected between the energy storage converter unit and the transformer.
7. The energy storage unit of claim 6, further comprising a first switch connected between the second fuse and the transformer.
8. The energy storage unit of claim 7, further comprising a circuit breaker connected between the first switch and the transformer.
9. A power storage unit according to any of claims 1-3, characterized in that the DC-DC converter is arranged in an isolated topology.
10. The energy storage unit of claim 9, wherein the isolated topology comprises: isolated phase-shifted full bridge, CLLC resonant or dual active bridge.
11. A power storage unit according to any one of claims 1-3, characterized in that the power of the DC-DC converter is between 10kW and 20 kW.
12. An energy storage unit according to any one of claims 1-3, wherein the dc side voltage of the energy storage converter cell corresponding to the first battery cluster satisfies the following conditionWherein V is BAT1 For the working voltage of the first battery cluster, vac is an alternating voltage, V DC1# Is the operating voltage of the DC-DC converter.
13. The energy storage unit of claim 12, wherein the operating voltage of the first battery cluster is not less thanWherein Vac is the ac voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322174528.8U CN220732407U (en) | 2023-08-10 | 2023-08-10 | Energy storage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322174528.8U CN220732407U (en) | 2023-08-10 | 2023-08-10 | Energy storage unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220732407U true CN220732407U (en) | 2024-04-05 |
Family
ID=90503022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322174528.8U Active CN220732407U (en) | 2023-08-10 | 2023-08-10 | Energy storage unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220732407U (en) |
-
2023
- 2023-08-10 CN CN202322174528.8U patent/CN220732407U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106169795B (en) | A kind of energy-storage lithium battery group and its expansion method | |
| CN103532203B (en) | A kind of battery pack application node and matrix battery management system and implementation method | |
| CN207134804U (en) | A kind of tandem type energy storage converter device utilized based on different battery modules differentiation | |
| CN110445243A (en) | The uninterrupted power of alterating and direct current of lightweight integration and method | |
| CN108110862A (en) | The charge-discharge control system of echelon lithium battery in communication base station | |
| CN110224482A (en) | Electric ship main power source battery is grouped independently-powered and charging system | |
| CN114977381A (en) | Energy storage system control circuit with multiple parallel battery clusters and control method thereof | |
| CN108418250A (en) | Distributed home energy-storage system | |
| CN111245060A (en) | Battery pack parallel operation charging and discharging control system and method based on controllable one-way conduction circuit | |
| CN111769542A (en) | DC power supply system for 220kV intelligent energy station | |
| CN217642739U (en) | Energy storage battery system and energy storage equipment | |
| CN217607526U (en) | Power battery charging switching system and power vehicle | |
| CN209088562U (en) | A kind of charge and discharge current limliting battery pack parallel control device of minimal switches | |
| CN107154666A (en) | A kind of batteries management system and electric power system | |
| CN103117595A (en) | Distributed direct current independent power supply system | |
| CN220732407U (en) | Energy storage unit | |
| CN112467769A (en) | Modularized pre-installed energy storage system | |
| CN219017744U (en) | Reconfigurable battery plug box and energy storage system | |
| CN208046261U (en) | The energy-storage system of low capacity old and useless battery | |
| CN207962473U (en) | A kind of lighting device utilized based on battery echelon | |
| CN212258417U (en) | DC power supply system for 220kV intelligent energy station | |
| CN212543374U (en) | Direct-current power supply system for 110kV intelligent energy station | |
| CN111009929A (en) | Storage battery pack string direct current confluence and pack string balance control device of energy storage system | |
| CN108092369A (en) | The matrix management system and method for multigroup battery in a kind of communication base station | |
| CN203574408U (en) | Battery pack application node and matrix battery management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |