CN211295254U - Battery cluster protection device of energy storage system - Google Patents
Battery cluster protection device of energy storage system Download PDFInfo
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- CN211295254U CN211295254U CN202020136609.2U CN202020136609U CN211295254U CN 211295254 U CN211295254 U CN 211295254U CN 202020136609 U CN202020136609 U CN 202020136609U CN 211295254 U CN211295254 U CN 211295254U
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- battery
- battery pack
- energy storage
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- storage system
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- 238000004146 energy storage Methods 0.000 title claims abstract description 22
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an energy storage system's battery cluster protection device, including at least two sets of group battery of arranging in parallel, every group battery contains the battery pack of the same quantity, and the battery pack in every group battery aligns each other, and the battery pack in every group battery concatenates in proper order, and two liang of adjacent group batteries concatenate the back through the battery pack of one end and constitute a battery cluster, all are equipped with direct current fuse between two arbitrary battery packs that concatenate. Through all being equipped with direct current fuse between the battery pack that concatenates, when short circuit between battery pack, form closed circuit between the battery pack, the electric current that flows through direct current fuse far exceeds the fusing value of fuse, and direct current fuse disconnection, the circuit opens a way, provides short-circuit protection for battery pack and battery cluster.
Description
Technical Field
The utility model relates to a battery field, in particular to energy storage system's battery cluster protection device.
Background
Lithium batteries and lead storage batteries are one of the core components of energy storage systems and are the energy center of the energy storage systems. The safety and stability of the energy center are related to the reliability of the energy storage system. Therefore, the safety of the battery pack, especially, the prevention of short-circuit accidents, is more important.
The battery pack short circuit protection of the energy storage products in the current market generally adopts total end protection, and the method is to add direct current fast fuses at the total positive and total negative positions of the battery pack, wherein the fuses are generally arranged in a high-voltage box, and the method is shown in figure 2. The scheme can effectively prevent the damage to the battery caused by the short circuit of the circuit between the high-voltage box and the PCS, and avoid secondary serious hidden dangers such as fire and the like of the battery caused by the short circuit. The method is widely adopted due to simple implementation, mature devices and convenient maintenance. However, according to the scheme, direct protection cannot be achieved through hardware when short circuit occurs between battery PACKs in the battery clusters, battery faults can be judged only through abnormity of temperature and voltage signals collected by a battery management unit BMU, the BMU sends fault information to a battery management system BMS, and then the BMS cuts off a battery main terminal contactor or a circuit breaker loop.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an energy storage system's battery cluster protection device can provide the protection during short circuit between the inside battery pack of battery cluster.
The embodiment of the utility model provides an energy storage system's battery cluster protection device, including at least two sets of group batteries of arranging in parallel, every group battery contains the battery pack of the same quantity, and the battery pack in every group battery aligns each other, and the battery pack in every group battery concatenates in proper order, and two liang of adjacent group batteries concatenate through the battery pack of one end and constitute a battery cluster, all are equipped with direct current fuse between two arbitrary battery packs that concatenate.
According to the utility model discloses battery cluster protection device of energy storage system of first aspect embodiment has following beneficial effect at least: through all being equipped with direct current fuse between the battery pack that concatenates, when short circuit between battery pack, form closed circuit between the battery pack, be equivalent to two direct short circuits of power together, loop resistance can be ignored almost, and short-circuit current far exceeds direct current fuse's fusing value and makes direct current fuse disconnection, and the circuit opens a way to short-circuit current has been cut off, for between the battery pack and whole battery cluster provide effectual short-circuit protection.
According to the utility model discloses an energy storage system's battery cluster protection device of first aspect embodiment still includes the high-pressure box, and a plurality of concatenations in proper order the battery pack at head and the tail both ends in the battery pack always just with always burden the lead wire respectively with the high-pressure box is connected. The management, protection and control are provided for the whole battery cluster by arranging the high-voltage box.
The embodiment of the second aspect of the utility model provides an energy storage system's battery cluster protection device, including a plurality of battery packs that concatenate in proper order, all be equipped with direct current fuse between two arbitrary battery packs that concatenate.
According to the utility model discloses battery cluster protection device of energy storage system of second aspect embodiment has following beneficial effect at least: through all being equipped with direct current fuse between the battery pack that concatenates, when short circuit between battery pack, form closed circuit between the battery pack, be equivalent to two direct short circuits of power together, loop resistance can be ignored almost, and short-circuit current far exceeds direct current fuse's fusing value and makes direct current fuse disconnection, and the circuit opens a way to short-circuit current has been cut off, for between the battery pack and whole battery cluster provide effectual short-circuit protection.
According to the utility model discloses battery cluster protection device of energy storage system of second aspect embodiment still includes the high-pressure box, and a plurality of concatenations in proper order the battery pack at head and the tail both ends in the battery pack always just with always burden the lead wire respectively with the high-pressure box is connected. The management, protection and control are provided for the whole battery cluster by arranging the high-voltage box.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a battery pack protection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a battery cluster protection apparatus in the prior art.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The utility model provides an energy storage system's battery cluster protection device, includes a plurality of battery packs that concatenate in proper order, all is equipped with direct current fuse between two arbitrary battery packs that concatenate. Through all being equipped with direct current fuse between the battery pack who concatenates, when short circuit between battery pack, form closed circuit between the battery pack, direct current fuse's electric current surpasss the fusing value, and direct current fuse breaks off, provides short-circuit protection for battery pack and battery cluster, and the heavy current that produces when avoiding short circuit between the battery pack damages the device. The battery PACK refers to a combination of one or more battery modules, in which battery cells are connected in series, in parallel, or in series-parallel, and only one pair of positive and negative output terminals is provided, such as: a plurality of batteries are connected in series, parallel or series-parallel, are arranged according to a certain sequence according to capacity and space requirements, and comprise a shell and a management and protection device which is called a battery pack.
Referring to fig. 1, the utility model discloses in some embodiments an energy storage system's battery cluster protection device, including 10 battery packs and a high- voltage box 2, 10 battery packs divide into two group battery 1, and every group battery 1 includes 5 battery packs, and the battery pack in every group battery 1 concatenates in proper order, and the battery pack in group battery 1 aligns each other, and the battery pack of two group battery 1 one ends concatenates, makes two group battery 1 establish ties, all is equipped with dc fuse between two arbitrary battery packs that concatenate, short circuit between battery pack, and dc fuse plays short-circuit protection. The total positive and negative leads of the battery packs at the head end and the tail end of the battery packs which are connected in series in sequence are respectively connected with the high-voltage box 2. Management, protection and control are provided for whole battery cluster through setting up high-pressure box 2, and battery pack and high-pressure box 2 are arranged neatly, save space.
The protection mechanism is now illustrated: if the part I in the diagram in FIG. 1 is short-circuited, the battery 1# pack and the battery 2# pack form a power-on loop, the current is increased rapidly because the two batteries without loads are directly connected, the direct current fuse FU1 is fused rapidly to form an open circuit because the current far exceeding the fusing value of the direct current fuse FU1 passes through, and the fault current is cut off, so that the safety of the batteries is protected, and accidents are avoided; if the position is short-circuited, a power-on loop is formed from the battery No. 2 pack to the battery No. 8 pack, and short-circuit current flows through the direct-current fuse FU2-FU8 until the direct-current fuse is disconnected, so that the short-circuit protection effect is achieved. The same is true for short circuits at other locations.
It is conceivable that, in some embodiments, the number of the battery packs 1 and the number of the battery packs 1 may be other integer combinations, for example, 15 battery packs may be provided, and 15 battery packs are divided into three groups of battery packs 1, each battery pack 1 includes 5 battery packs, the battery packs in each battery pack 1 are sequentially connected in series, the battery packs in the battery packs 1 are aligned with each other, the battery packs at one ends of two adjacent battery packs 1 are connected in series, so that two adjacent battery packs 1 are connected in series, a dc fuse is provided between any two battery packs connected in series, and a total positive lead and a total negative lead of the battery packs at the head end and the tail end of the battery packs are respectively connected to the high-voltage box 2.
In some embodiments, the battery cluster protection device of the energy storage system includes a high voltage box 2 and a plurality of battery packs connected in series in sequence, the battery packs are arranged in a straight line, and a dc fuse is arranged between any two battery packs connected in series. The total positive and negative leads of the battery packs at the head end and the tail end of the battery packs which are connected in series in sequence are respectively connected with the high-voltage box 2. The high-voltage box 2 is arranged to provide management, protection and control for the whole battery cluster.
Claims (4)
1. A battery cluster protection device of an energy storage system is characterized in that: including at least two sets of group battery (1) of arranging in parallel, every group battery (1) contains the battery pack of the same quantity, and the battery pack in every group battery (1) aligns each other, and the battery pack in every group battery (1) concatenates in proper order, and two liang of adjacent group batteries (1) concatenate through the battery pack of one end and constitute a battery cluster, all are equipped with direct current fuse between the battery pack that arbitrary two concatenated.
2. The battery cluster protection device of an energy storage system of claim 1, wherein: the battery pack is characterized by further comprising a high-voltage box (2), wherein a plurality of battery pack total positive and total negative leads which are connected in series in sequence at the head end and the tail end of the battery pack are respectively connected with the high-voltage box (2).
3. A battery cluster protection device of an energy storage system is characterized in that: the battery pack comprises a plurality of battery packs connected in series in sequence, and a direct current fuse is arranged between any two battery packs connected in series.
4. A battery cluster protection device of an energy storage system according to claim 3, wherein: the battery pack is characterized by further comprising a high-voltage box (2), wherein a plurality of battery pack total positive and total negative leads which are connected in series in sequence at the head end and the tail end of the battery pack are respectively connected with the high-voltage box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020136609.2U CN211295254U (en) | 2020-01-20 | 2020-01-20 | Battery cluster protection device of energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020136609.2U CN211295254U (en) | 2020-01-20 | 2020-01-20 | Battery cluster protection device of energy storage system |
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| CN211295254U true CN211295254U (en) | 2020-08-18 |
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| CN202020136609.2U Active CN211295254U (en) | 2020-01-20 | 2020-01-20 | Battery cluster protection device of energy storage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036317A (en) * | 2021-03-02 | 2021-06-25 | 阳光电源股份有限公司 | Battery cluster and energy storage system |
| CN113300009A (en) * | 2021-05-21 | 2021-08-24 | 阳光电源股份有限公司 | Battery cluster and energy storage system |
| CN114879053A (en) * | 2022-06-16 | 2022-08-09 | 珠海科创电力电子有限公司 | Method for predicting service life of energy storage lithium iron phosphate battery |
-
2020
- 2020-01-20 CN CN202020136609.2U patent/CN211295254U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036317A (en) * | 2021-03-02 | 2021-06-25 | 阳光电源股份有限公司 | Battery cluster and energy storage system |
| AU2021431621B2 (en) * | 2021-03-02 | 2025-07-03 | Sungrow Power Supply Co., Ltd. | Battery cluster and energy storage system |
| CN113300009A (en) * | 2021-05-21 | 2021-08-24 | 阳光电源股份有限公司 | Battery cluster and energy storage system |
| CN114879053A (en) * | 2022-06-16 | 2022-08-09 | 珠海科创电力电子有限公司 | Method for predicting service life of energy storage lithium iron phosphate battery |
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