CN205039556U - Lithium ion battery energy storage power station - Google Patents
Lithium ion battery energy storage power station Download PDFInfo
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- CN205039556U CN205039556U CN201520675728.4U CN201520675728U CN205039556U CN 205039556 U CN205039556 U CN 205039556U CN 201520675728 U CN201520675728 U CN 201520675728U CN 205039556 U CN205039556 U CN 205039556U
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Abstract
The utility model discloses a lithium ion battery energy storage power station contains: a plurality of groups energy storage unit, a plurality of groups energy storage unit pass through that the low pressure generating line is parallelly connected to link to each other, the low -voltage protection device, low -voltage protection device and parallelly connected a plurality of groups energy storage unit series connection, potential device, potential device's once side and low -voltage protection device establish ties, middling pressure protection device, middling pressure protection device's one end and potential device's secondary side link to each other, the other end is connected to high -pressure generating line. The utility model discloses an adopt reasonable topology, avoided the direct parallelly connected uncontrollable circulation problem that causes of group battery to can realize millisecond level quick response, reply voltage disturbance.
Description
Technical field
The utility model relates to a kind of DC power supply power station, particularly a kind of lithium ion battery energy-accumulating power station.
Background technology
In MW class energy-accumulating power station, battery cell quantity is up to more than 30,000 joints, need by series and parallel mode in groups, inevitably there is circulation and discharge and recharge unbalanced phenomena, long-time running will reduce battery performance, life-span and fail safe greatly, thus impact is to the stability of electrical network input electric energy, impact transmission of electricity quality.
Utility model content
The purpose of this utility model is to provide a kind of lithium ion battery energy-accumulating power station, by adopting rational topology, avoids the battery pack directly uncontrollable circulation problem caused in parallel, and can realize Millisecond and respond fast, reply voltage disturbance.
In order to realize above object, the utility model is achieved through the following technical solutions:
A kind of lithium ion battery energy-accumulating power station, comprises:
Some groups of energy storage units, some groups of described energy storage units are connected by low-voltage bus bar parallel connection;
Low-voltage protection device, described low-voltage protection device and some groups of energy storage units connected in series in parallel;
Potential device, the primary side of described potential device is connected with low-voltage protection device;
Middle pressure protective device, described middle one end of pressure protective device is connected with the secondary side of potential device, and the other end is connected to high voltage bus.
Described energy storage unit is grouping access type energy storage unit.
Described grouping access type energy storage unit comprises:
Some groups of straight modules, the straight module of described often group comprises the array and DC chopper that are connected in series, and described some groups straight modules are connected by DC bus;
Several orthogonal modules, the two ends of some groups of described orthogonal modules are connected with ac bus with DC bus respectively.
The DC input voitage scope of described grouping access type energy storage unit reaches 300 ~ 800V.
Described orthogonal module is inverter.
Described grouping access type energy storage unit comprises some groups: the array be connected in series and orthogonal module, and the described orthogonal module often organized is connected by ac bus.
The DC input voitage scope of described grouping access type energy storage unit reaches 300 ~ 800V.
The utility model compared with prior art, has the following advantages:
By adopting rational topology, avoid the battery pack directly uncontrollable circulation problem caused in parallel, and Millisecond can be realized respond fast, reply voltage disturbance.
Accompanying drawing explanation
Fig. 1 is the system architecture diagram of the utility model lithium ion battery energy-accumulating power station;
Fig. 2 is the main circuit topology figure of the stage type energy storage unit of the utility model lithium ion battery energy-accumulating power station;
Fig. 3 is the main circuit topology figure of the single stage type energy storage unit of the utility model lithium ion battery energy-accumulating power station.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
A kind of lithium ion battery energy-accumulating power station, as shown in Figure 1, comprises: some groups of energy storage units 1, low-voltage protection device 2, potential device 3, middle pressure protective devices 4, and wherein, some groups of energy storage units 1 are connected by low-voltage bus bar 5 parallel connection; Low-voltage protection device 2 is connected with some groups of energy storage units 1 in parallel; The primary side of potential device 3 is connected with low-voltage protection device 2; One end of middle pressure protective device 4 is connected with the secondary side of potential device 3, and the other end is connected to high voltage bus 6.In the utility model; low-voltage protection device 2 selects low-tension switch cabinet; Medium Voltage Switchgear selected by middle pressure protective device 4; potential device 3 for capacity be the two winding transformer of 1250kVA; energy-accumulating power station is grouping access type energy-accumulating power station; be divided into stage type and single stage type energy-accumulating power station, specifically refer to following two embodiments respectively.
One of embodiment:
The present embodiment adopts stage type energy storage unit, namely separate unit 500kW energy-accumulating power station forms by organizing small-power module more, a set of system control cpu is adopted to realize the cooperation control of intermodule, avoid the battery pack directly uncontrollable circulation problem caused in parallel, and Millisecond can be realized respond fast, reply voltage disturbance, its main circuit topology figure, as shown in Figure 2, this grouping access type energy storage unit comprises: some groups of straight modules, several orthogonal modules 12, in the present embodiment, comprise 12 groups of straight modules, 2 orthogonal modules 12, wherein, often the straight module of group comprises the array 111 and DC chopper 112 that are connected in series, some groups of straight modules are connected by DC bus 7, the two ends of some groups of orthogonal modules 12 are connected with ac bus 8 with DC bus 7 respectively, and orthogonal module 12 adopts DC/AC module and inverter.In the present embodiment, the DC input voitage scope of grouping access type energy storage unit reaches 300 ~ 800V.
Embodiment two:
The present embodiment adopts single stage type energy storage unit, and namely separate unit 500kW energy-accumulating power station is made up of multiple DC/AC module, each modular power 86kW, as shown in Figure 3.Grouping access type energy storage unit comprises some groups: the array 13 be connected in series and orthogonal module 14, the orthogonal module 14 often organized is connected by ac bus 8, in the present embodiment, each battery set charge/discharge electric current can control separately, and can control flexibly according to battery pack state-of-charge (SOC), thus effectively avoid circulation between battery pack.
In the present embodiment, the DC input voitage scope of grouping access type energy storage unit reaches 300 ~ 800V.Orthogonal module 12 adopts inverter.
In sum, the utility model lithium ion battery energy-accumulating power station, by adopting rational topology, avoids the battery pack directly uncontrollable circulation problem caused in parallel, and can realize Millisecond and respond fast, reply voltage disturbance.
Although content of the present utility model has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (7)
1. a lithium ion battery energy-accumulating power station, is characterized in that, comprises:
Some groups of energy storage units (1), some groups of described energy storage units (1) are connected by low-voltage bus bar (5) parallel connection;
Low-voltage protection device (2), described low-voltage protection device (2) is connected with some groups of energy storage units (1) in parallel;
Potential device (3), the primary side of described potential device (3) is connected with low-voltage protection device (2);
Middle pressure protective device (4), one end of described middle pressure protective device (4) is connected with the secondary side of potential device (3), and the other end is connected to high voltage bus (6).
2. lithium ion battery energy-accumulating power station as claimed in claim 1, is characterized in that, described energy storage unit (1) is grouping access type energy storage unit.
3. lithium ion battery energy-accumulating power station as claimed in claim 2, it is characterized in that, described grouping access type energy storage unit comprises:
Some groups of straight modules, the straight module of described often group comprises the array (111) and DC chopper (112) that are connected in series, and described some groups straight modules are connected by DC bus (7);
Several orthogonal modules (12), the two ends of some groups of described orthogonal modules (12) are connected with ac bus (8) with DC bus (7) respectively.
4. lithium ion battery energy-accumulating power station as claimed in claim 3, it is characterized in that, the DC input voitage scope of described grouping access type energy storage unit reaches 300 ~ 800V.
5. lithium ion battery energy-accumulating power station as claimed in claim 3, it is characterized in that, described orthogonal module (12) is inverter.
6. lithium ion battery energy-accumulating power station as claimed in claim 2, it is characterized in that, described grouping access type energy storage unit comprises some groups: the array (13) be connected in series and orthogonal module (14), and the described orthogonal module (14) often organized is connected by ac bus (8).
7. lithium ion battery energy-accumulating power station as claimed in claim 6, it is characterized in that, the DC input voitage scope of described grouping access type energy storage unit reaches 300 ~ 800V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520675728.4U CN205039556U (en) | 2015-09-02 | 2015-09-02 | Lithium ion battery energy storage power station |
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| CN201520675728.4U CN205039556U (en) | 2015-09-02 | 2015-09-02 | Lithium ion battery energy storage power station |
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| CN205039556U true CN205039556U (en) | 2016-02-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140946A (en) * | 2015-09-02 | 2015-12-09 | 国网上海市电力公司 | Lithium ion battery energy storage power station |
| CN112260297A (en) * | 2020-10-26 | 2021-01-22 | 上海电气分布式能源科技有限公司 | Double-bus grid-connected energy storage system management method, device, equipment and medium |
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2015
- 2015-09-02 CN CN201520675728.4U patent/CN205039556U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140946A (en) * | 2015-09-02 | 2015-12-09 | 国网上海市电力公司 | Lithium ion battery energy storage power station |
| CN112260297A (en) * | 2020-10-26 | 2021-01-22 | 上海电气分布式能源科技有限公司 | Double-bus grid-connected energy storage system management method, device, equipment and medium |
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