CN221041283U - Temperature-eliminating integrated bag-level immersed overflow type energy storage system - Google Patents
Temperature-eliminating integrated bag-level immersed overflow type energy storage system Download PDFInfo
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- CN221041283U CN221041283U CN202322636535.5U CN202322636535U CN221041283U CN 221041283 U CN221041283 U CN 221041283U CN 202322636535 U CN202322636535 U CN 202322636535U CN 221041283 U CN221041283 U CN 221041283U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 157
- 239000007788 liquid Substances 0.000 claims abstract description 314
- 239000002699 waste material Substances 0.000 claims description 33
- 239000007921 spray Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000011344 liquid material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000000352 storage cell Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect 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 a temperature-eliminating integrated bag-level immersed overflow type energy storage system, which comprises a temperature control unit, a fire-fighting unit and at least one energy storage cluster, wherein the temperature control unit is connected with the fire-fighting unit; the energy storage cluster comprises a current collecting device and at least one energy storage bag positioned above the current collecting device, and the energy storage bag is provided with a liquid inlet and an overflow port; the temperature control unit is connected with a temperature control liquid inlet main pipe and a temperature control liquid return main pipe, the temperature control liquid inlet main pipe and the energy storage bag are provided with temperature control liquid inlet pipes in one-to-one correspondence, the temperature control liquid inlet pipes are connected with liquid inlets of the corresponding energy storage bags, and the temperature control liquid inlet pipes are provided with proportional control valves for independently controlling the flow of temperature control mediums entering the corresponding energy storage bags; the current collecting device is used for receiving temperature control medium overflowed from the energy storage bag; the current collecting device is connected with a temperature control liquid return pipe; a suction pump is connected to the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the temperature control liquid return main pipe; or, the temperature control liquid return pipe is connected with the temperature control unit.
Description
Technical Field
The utility model belongs to the technical field of electric energy storage, and particularly relates to a temperature-eliminating integrated bag-level immersed overflow type energy storage system.
Background
Thermal runaway of lithium batteries is caused by the fact that the rate of heat generation of the battery is much higher than the rate of heat dissipation, and heat is accumulated in large amounts and not dissipated in time. Thermal runaway of lithium batteries is an energy positive feedback cycle process: the elevated temperature causes the system to heat up, which in turn causes the system to become hotter. There are many causes of thermal runaway of lithium batteries, and there are mainly the following points.
1) Overcharge triggered lithium battery thermal runaway: the battery itself has overshoot protection, but in the event of a problem failure of such overshoot protection, continued charging of the battery can result in battery overshoot triggering thermal runaway. Along with the continuous use of the battery, the aging phenomenon of the battery is serious gradually, the consistency of the battery pack is poorer and worse, and the battery is easy to have thermal safety problem if overcharged.
2) Overheat triggering lithium battery thermal runaway: in normal use of the lithium battery, when the battery is discharged at a high speed or meets a limit working condition, high-current discharge is required to be continued, at the moment, the temperature inside the battery is gradually increased, and when a large amount of heat of the battery is accumulated, if the discharge current of the battery is not limited in time, the thermal runaway phenomenon of the lithium battery is most likely to be caused.
3) Mechanical triggering lithium battery thermal runaway: the thermal runaway of the battery can be caused by impact deformation of the lithium battery pack, internal short circuit of the battery pack, and other damage to the battery pack.
In addition to the above reasons, overdischarge of the battery, internal short circuits of the battery, and the like may also cause thermal runaway of the battery. Particularly, in the thermal runaway explosion stage of the battery, the electrolyte reacts with oxygen generated by the positive electrode reaction to react vigorously, the battery fires, and the damage such as fire and explosion is caused, so that the life and property safety of people is greatly threatened.
Disclosure of utility model
Therefore, the utility model aims to provide a temperature-eliminating integrated bag-level immersed overflow type energy storage system which can realize uniform temperature control and temperature control under normal operation conditions, so that the temperature is kept within a set temperature range; when thermal runaway occurs, fire fighting submersion can be achieved to reduce the thermal runaway impact range.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A temperature-eliminating integrated bag-level immersed overflow type energy storage system comprises a temperature control unit, a fire-fighting unit and at least one energy storage cluster; the energy storage cluster comprises a current collecting device and at least one energy storage bag positioned above the current collecting device, and a liquid inlet and an overflow port are arranged on the energy storage bag;
The temperature control unit is connected with a temperature control liquid inlet main pipe and a temperature control liquid return main pipe, the temperature control liquid inlet main pipe and the energy storage bag are provided with temperature control liquid inlet pipes in one-to-one correspondence, the temperature control liquid inlet pipes are connected with liquid inlets of the corresponding energy storage bags, and the temperature control liquid inlet pipes are provided with proportional control valves for independently controlling the flow of temperature control mediums entering the corresponding energy storage bags;
The current collecting device is used for receiving temperature control medium overflowed from the energy storage bag; the current collecting device is connected with a temperature control liquid return pipe; a suction pump is connected to the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the temperature control liquid return main pipe; or, the temperature control liquid return pipe is connected with the temperature control unit.
Further, the current collecting device adopts an overflow liquid storage tank, and the bottom of the overflow liquid storage tank is connected with the temperature control liquid return pipe.
Further, the device also comprises a waste liquid storage box, wherein a first overflow pipe is arranged on the overflow liquid storage box and connected with the waste liquid storage box.
Further, a one-way valve is arranged at the liquid inlet of the waste liquid storage box.
Further, the current collecting device adopts an overflow current collecting bucket, and the bottom of the overflow current collecting bucket is connected with the temperature control liquid return pipe.
Further, the device also comprises a liquid return liquid storage tank;
The liquid return liquid storage tank is connected with the temperature control liquid return pipe, the current collecting device is connected with the liquid return liquid storage tank through the temperature control liquid return pipe, and a liquid inlet of the suction pump is connected with the liquid return liquid storage tank; or alternatively, the first and second heat exchangers may be,
The liquid return liquid storage tank is connected with the temperature control liquid return main pipe, a liquid inlet of the suction pump is connected with the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the liquid return liquid storage tank; and a second suction pump is arranged on the temperature control liquid return main pipe.
Further, the device also comprises a liquid return liquid storage tank;
The liquid return liquid storage tank is connected with the temperature control liquid return pipe, the current collecting device is connected with the liquid return liquid storage tank through the temperature control liquid return pipe, and a liquid inlet of the suction pump is connected with the liquid return liquid storage tank; or alternatively, the first and second heat exchangers may be,
The liquid return liquid storage tank is connected with the temperature control liquid return main pipe, a liquid inlet of the suction pump is connected with the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the liquid return liquid storage tank; a second suction pump is arranged on the temperature control liquid return main pipe;
the waste liquid storage tank is characterized by further comprising a waste liquid storage tank, wherein a second overflow pipe is arranged on the liquid return liquid storage tank and connected with the waste liquid storage tank.
Further, a one-way valve is arranged at the liquid inlet of the waste liquid storage box.
Further, the energy storage package includes a package housing and an energy storage assembly located within the package housing, the energy storage assembly including at least one energy storage cell.
Further, the overflow port is located above the energy storage assembly.
Further, the package shell adopts airtight structure, the inlet sets up the bottom of package shell, the overflow mouth sets up the top of package shell.
Further, the bag shell adopts an open structure with an opening at the top, and the liquid inlet is arranged at the bottom of the bag shell; the top opening of the ladle housing is used as the overflow port, or the overflow port is arranged on the top side wall of the ladle housing.
Further, the energy storage bag is arranged above the overflow liquid storage tank along the vertical direction; the overflow liquid storage tank is positioned under the overflow port so that temperature control medium overflowed in the energy storage bag falls into the overflow liquid storage tank.
Further, the overflow port is connected with an overflow pipe connected with the overflow liquid storage tank; or, a drainage component for guiding the temperature control medium overflowed from the overflow port to enter the overflow liquid storage tank is arranged in the energy storage cluster.
Further, a fire-fighting liquid inlet main pipe is connected to the fire-fighting unit, and fire-fighting liquid inlet pipes used for injecting or spraying fire-fighting media into the energy storage bags are arranged in one-to-one correspondence with the energy storage bags.
Further, the package shell adopts a closed structure, and the fire-fighting liquid inlet pipe is connected with the top of the energy storage package so as to inject or spray fire-fighting medium into the energy storage package; or, the bag shell adopts an open structure with an opening at the top, and the fire-fighting liquid inlet pipe is positioned above the energy storage bag and is used for injecting or spraying fire-fighting medium into the energy storage bag through the opening at the top of the bag shell.
The utility model has the beneficial effects that:
According to the bag-level immersed overflow type energy storage system integrating temperature elimination, the liquid inlet and the overflow port are formed in the energy storage bag, and the liquid inlet is connected with the temperature control unit through the temperature control liquid inlet pipe, so that the technical purpose of injecting temperature control medium into the energy storage bag by using the temperature control unit is achieved; when the temperature control medium in the energy storage bag exceeds the overflow height of the overflow port, the temperature control medium flows out through the overflow port and enters the current collecting device, and the temperature control medium in the current collecting device flows back into the temperature control unit through the temperature control liquid return main pipe by utilizing the suction pump arranged on the temperature control liquid return pipe, so that the circulation of the temperature control medium between the energy storage bag and the temperature control unit is realized; the proportional control valve is arranged on the temperature control liquid inlet pipe, and the opening degree of the proportional control valve can be adjusted according to the temperature in the corresponding energy storage bag, so that the flow of the temperature control medium entering the corresponding energy storage bag is adjusted, the temperature of all the energy storage bags is in a set range, and the uniform temperature control and the temperature control are realized; when the energy storage bag is in thermal runaway, the fire-fighting medium is injected or sprayed into the energy storage bag by the fire-fighting unit, so that the thermal runaway is prevented from spreading. In summary, the temperature-eliminating integrated ladle-level immersed overflow type energy storage system can realize uniform temperature control and temperature control under normal operation conditions, so that the temperature is kept within a set temperature range; when thermal runaway occurs, fire fighting submersion can be achieved to reduce the thermal runaway impact range. In addition, through set up inlet and overflow mouth on the energy storage package, adopt the package level submergence promptly, can make the inlet pressure of every energy storage package more balanced, the inlet pressure of every energy storage package equals the liquid pressure between inlet and the control by temperature change medium overflow height in the energy storage package promptly, so, under the equal condition of every energy storage package inlet geometry, pressure, can conveniently adjust the flow of the control by temperature change medium that pours into in every energy storage package through the aperture of adjusting the proportional control valve, finally realize making the temperature of every energy storage package all be located the samming control and the temperature control of settlement within range.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:
FIG. 1 is a schematic diagram of a first embodiment of a temperature-swing integrated ladle-to-ladle submerged overflow energy storage system according to the present utility model;
Fig. 2 is a schematic structural diagram of a second embodiment of a temperature-eliminating integrated bag-level immersed overflow type energy storage system, specifically, a schematic structural diagram when a first overflow pipe is arranged on an overflow liquid storage tank and is connected with a waste liquid storage tank;
fig. 3 is a schematic structural diagram of a second embodiment of the temperature-eliminating integrated bag-level immersed overflow type energy storage system, specifically, a schematic structural diagram when a second overflow pipe is arranged on a liquid return liquid storage tank and is connected with a waste liquid storage tank;
FIG. 4 is a schematic diagram of a third embodiment of a temperature swing integrated ladle-to-ladle submerged overflow energy storage system according to the present utility model;
FIG. 5 is a schematic diagram of a fourth embodiment of a temperature swing integrated ladle-to-ladle submerged overflow energy storage system according to the present utility model;
FIG. 6 is a schematic structural view of an open-structured energy storage pack;
fig. 7 is a schematic structural view of an energy storage pack of a closed structure.
Reference numerals illustrate:
10-a temperature control unit; 11-a temperature control liquid inlet main pipe; 12-a temperature control liquid return main pipe; 13-a temperature control liquid inlet pipe; 14-a proportional control valve; 15-a suction pump; 16-a liquid return liquid storage tank; 16-a second suction pump; 17-a temperature control liquid return pipe;
20-fire-fighting units; 21-a fire control liquid inlet main pipe; 22-a fire-fighting liquid inlet pipe; 23-a first overflow pipe; 24-a waste liquid storage tank; 25-a second overflow pipe;
31-an energy storage pack; 32-a liquid inlet; 33-overflow port; 34-a current collecting device; 35-outlet valve.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model, so that those skilled in the art may better understand the utility model and practice it.
Example 1
As shown in fig. 1-4, the temperature-extinguishing integrated package-level submerged overflow energy storage system of the present embodiment comprises a temperature control unit 10, a fire-fighting unit 20 and at least one energy storage cluster. The energy storage cluster of the embodiment comprises a current collecting device 34 and at least one energy storage bag 31 positioned above the current collecting device 34, wherein a liquid inlet 32 and an overflow port 33 are arranged on the energy storage bag 31.
The temperature control unit 10 of the embodiment is connected with a temperature control liquid inlet main pipe 11 and a temperature control liquid return main pipe 12, the temperature control liquid inlet main pipe 11 and the energy storage bags 31 are provided with temperature control liquid inlet pipes 13 in one-to-one correspondence, the temperature control liquid inlet pipes 13 are connected with liquid inlet ports 32 of the corresponding energy storage bags 31, and the temperature control liquid inlet pipes 13 are provided with proportional control valves 14 for independently controlling flow of temperature control mediums entering the corresponding energy storage bags 31. Specifically, since the liquid inlet 32 and the overflow port 33 are disposed on the energy storage bag 31, that is, the liquid level of the temperature control medium in the energy storage bag 31 is controlled and kept stable by the overflow port 33, the liquid inlet pressure at the liquid inlet 32 depends on the liquid level of the liquid inlet 32 and the temperature control medium, so that the liquid inlet pressure at the liquid inlet 32 of each energy storage bag 31 can be ensured to be equal, and the geometric dimension of the liquid inlet 32 of each energy storage bag 31 is kept consistent, so that the flow of the temperature control medium entering each energy storage bag 31 can be conveniently adjusted by adjusting the opening of the proportional control valve 14. In the operation process, when the temperature in a certain energy storage bag 31 is higher than a set threshold value, the opening of the corresponding proportional control valve 14 is adjusted to be larger so as to increase the flow of the temperature control medium injected into the energy storage bag 31, thereby realizing the technical purpose of cooling the energy storage bag 31; when the temperature in a certain energy storage pack 31 is lower than the set threshold value, the opening degree of the corresponding proportional control valve 14 is adjusted to be smaller, and even the proportional control valve 14 is closed, so that the flow of the temperature control medium injected into the energy storage pack 31 is reduced, and the technical purpose of heating the energy storage pack 31 is achieved. By collecting the temperatures of all the energy storage bags 31 in real time and dynamically controlling the opening of the proportional control valve 14, the temperatures of all the energy storage bags 31 can be kept within a set range even if the temperature equalization control is realized among different energy storage bags 31.
The fire-fighting unit 20 of the embodiment is connected with a fire-fighting liquid inlet main pipe 21, and the fire-fighting liquid inlet main pipe 21 and the energy storage bags 32 are provided with fire-fighting liquid inlet pipes 22 for injecting or spraying fire-fighting media into the energy storage bags 32 in a one-to-one correspondence. A fire control inlet valve (not shown) may be provided on the fire control inlet pipe 22.
In this embodiment, the current collecting device 34 is used to receive the temperature control medium overflowed from the energy storage pack 31. The temperature control liquid return pipe 17 is connected to the current collecting device 34, the suction pump 15 is connected to the temperature control liquid return pipe 17, and a liquid outlet of the suction pump 15 is connected to the temperature control liquid return main pipe 12, so that the temperature control medium overflowed into the current collecting device 34 is refluxed into the temperature control unit 10, and circulation of the temperature control medium is realized.
As shown in fig. 1, in the first implementation manner of this embodiment, the collecting device 34 adopts an overflow liquid storage tank, the bottom of the overflow liquid storage tank is connected with a temperature control liquid return pipe 17, the temperature control liquid return pipe 17 is only provided with a suction pump 15, and the suction pump 15 is used to pump the temperature control medium in the overflow liquid storage tank into the temperature control unit 10. Specifically, in this embodiment, different liquid materials are used for the fire-fighting medium and the temperature-controlling medium, and the fire-fighting medium and the temperature-controlling medium are not compatible, and the density of the fire-fighting medium is less than that of the temperature-controlling medium. Thus, the temperature control liquid return pipe 17 of the embodiment is connected with the bottom of the overflow liquid storage tank, the overflow liquid storage tank is provided with a first overflow pipe 23, and the first overflow pipe 23 is connected with a waste liquid storage tank 24. That is, after the fire-fighting unit 20 injects or sprays the fire-fighting medium into the energy storage bag 31, the fire-fighting medium overflows into the overflow liquid storage tank through the overflow port 33, and the fire-fighting medium can be drained into the waste liquid storage tank 24 by using the first overflow pipe 23 arranged on the overflow liquid storage tank, so that the fire-fighting medium is prevented from entering the temperature control unit 10. In this embodiment, the outlet valve 35 may be further installed at the outlet of the overflow tank, so that the outlet valve 35 is opened after a certain amount of temperature control medium is stored in the overflow tank. Of course, the outlet valve 35 and the suction pump 15 may be controlled in a coordinated manner, and when the liquid level of the temperature control medium stored in the overflow tank reaches or exceeds the set level, the outlet valve 35 may be opened and the suction pump 15 may be opened. In the preferred embodiment of the present embodiment, a one-way valve 26 is provided at the inlet of the waste storage tank to prevent liquid in the waste storage tank from flowing back into the overflow tank through the first overflow pipe 23. In this embodiment, after the fire-fighting medium is injected or sprayed into the corresponding energy storage bag 31, the fire-fighting medium also flows out of the corresponding energy storage bag 31 through the overflow port 33 and is received by the overflow liquid storage tank.
In a second implementation of the present embodiment, as shown in fig. 2-3, the current collecting device 34 is an overflow tank, and the bottom of the overflow tank is connected to the temperature control return pipe 17. In this embodiment, the temperature-eliminating integrated bag-level immersed overflow energy storage system further includes a liquid return liquid storage tank 16, the liquid return liquid storage tank 16 is connected to a temperature control liquid return pipe 17, the current collecting device 34 is connected to the liquid return liquid storage tank 16 through the temperature control liquid return pipe 17, and the liquid inlet of the suction pump 15 is connected to the liquid return liquid storage tank 16. At this time, the temperature control medium in the overflow liquid storage tank is converged to the liquid return liquid storage tank 16, and then the temperature control medium in the liquid return liquid storage tank 16 is pumped into the temperature control unit 10 through the suction pump 15.
Specifically, in this embodiment, different liquid materials are used for the fire-fighting medium and the temperature-controlling medium, and the fire-fighting medium and the temperature-controlling medium are not compatible, and the density of the fire-fighting medium is less than that of the temperature-controlling medium. There are two ways to discharge the fire medium at this time.
As shown in fig. 2, the first way is: a first overflow pipe 23 is arranged on the overflow liquid storage tank, and the first overflow pipe 23 is connected with a waste liquid storage tank 24; that is, after the fire-fighting unit 20 injects or sprays the fire-fighting medium into the energy storage bag 31, the fire-fighting medium overflows into the overflow liquid storage tank through the overflow port 33, and the fire-fighting medium can be drained into the waste liquid storage tank 24 by using the first overflow pipe 23 arranged on the overflow liquid storage tank, so that the fire-fighting medium is prevented from entering the temperature control unit 10. In this embodiment, the outlet valve 35 may be installed at the outlet of the overflow tank, so that the outlet valve 35 is opened after a certain amount of temperature control medium is stored in the overflow tank. In the preferred embodiment of the present embodiment, a one-way valve 26 is provided at the inlet of the waste storage tank to prevent liquid in the waste storage tank from flowing back into the overflow tank through the first overflow pipe 23. In this embodiment, after the fire-fighting medium is injected or sprayed into the corresponding energy storage bag 31, the fire-fighting medium also flows out of the corresponding energy storage bag 31 through the overflow port 33 and is received by the overflow liquid storage tank.
As shown in fig. 3, the second way is: the upper part of the liquid return liquid storage tank 16 is provided with a second overflow pipe 25, the second overflow pipe 25 is connected with a waste liquid storage tank 24, namely, all the temperature control media and the fire control media in the overflow liquid storage tank are converged to the liquid return liquid storage tank 16, and as the fire control media are positioned above the temperature control media, the fire control media in the liquid return liquid storage tank 16 can overflow into the waste liquid storage tank 24 by using the second overflow pipe 25, and the temperature control media in the liquid return liquid storage tank 16 are pumped into the temperature control unit 10 by using the suction pump 15. Of course, in the present embodiment, the temperature control liquid return pipe 17 may be provided with a second suction pump 17, and the temperature control medium in the overflow liquid storage tank may be pumped into the liquid return liquid storage tank 16 by the second suction pump 17. In this embodiment, the outlet valve 35 may be installed at the outlet of the overflow tank, so that the outlet valve 35 is opened after a certain amount of temperature control medium is stored in the overflow tank. Of course, the outlet valve 35 and the second suction pump 17 may be controlled in a coordinated manner at this time, and when the liquid level of the temperature control medium stored in the overflow liquid storage tank reaches or exceeds the set level, the outlet valve 35 is opened, and the second suction pump 17 is opened, so that a liquid level sensor may be installed in the overflow liquid storage tank. In the preferred embodiment of the present embodiment, a one-way valve 26 is provided at the inlet of the waste liquid storage tank to prevent liquid in the waste liquid storage tank from flowing back into the return liquid tank 16 through the second overflow pipe 25. In this embodiment, after the fire-fighting medium is injected or sprayed into the corresponding energy storage bag 31, the fire-fighting medium also flows out of the corresponding energy storage bag 31 through the overflow port 33 and is received by the overflow liquid storage tank.
As shown in fig. 4, in the third implementation manner of this embodiment, the collecting device 34 adopts an overflow collecting bucket, and the bottom of the overflow collecting bucket is connected to the temperature control liquid return pipe 17, that is, after the temperature control mediums in the energy storage bag 31 are collected into the overflow collecting bucket, the temperature control mediums directly enter the temperature control liquid return pipe 17. In this embodiment, the temperature-eliminating integrated bag-level immersed overflow energy storage system further includes a liquid return liquid storage tank 16, the liquid return liquid storage tank 16 is connected to a temperature control liquid return pipe 17, and a liquid inlet of the suction pump 15 is connected to the liquid return liquid storage tank 16. At this time, the temperature control medium is converged to the liquid return liquid storage tank 16, and then the temperature control medium in the liquid return liquid storage tank 16 is pumped into the temperature control unit 10 by the suction pump 15. Specifically, in this embodiment, different liquid materials are used for the fire-fighting medium and the temperature-controlling medium, and the fire-fighting medium and the temperature-controlling medium are not compatible, and the density of the fire-fighting medium is less than that of the temperature-controlling medium. At this time, a second overflow pipe 25 may be disposed at the upper portion of the liquid return tank 16, where the second overflow pipe 25 is connected with the waste liquid storage tank 24, that is, all the temperature control medium and fire control medium in the overflow tank are converged to the liquid return tank 16, and since the fire control medium is located above the temperature control medium, the fire control medium in the liquid return tank 16 may overflow into the waste liquid storage tank 24 by using the second overflow pipe 25, and the temperature control medium in the liquid return tank 16 is pumped into the temperature control unit 10 by using the suction pump 15. In the preferred embodiment of the present embodiment, a one-way valve 26 is provided at the inlet of the waste liquid storage tank to prevent liquid in the waste liquid storage tank from flowing back into the return liquid tank 16 through the second overflow pipe 25. In this embodiment, after the fire-fighting medium is injected or sprayed into the corresponding energy storage bag 31, the fire-fighting medium also flows out of the corresponding energy storage bag 31 through the overflow port 33 and is received by the overflow confluence hopper.
As shown in fig. 5, in a fourth implementation manner of this embodiment, a temperature control liquid return pipe 17 is connected to the current collecting device 34, and the temperature control liquid return pipe 17 is connected to the temperature control unit 10. That is, in this embodiment, the temperature control medium in the current collecting device 34 is pumped by the pump built in the temperature control unit 10, but the liquid inlet of the pump built in the temperature control unit 10 should be lower than the current collecting device 34. Other structures in this embodiment are the same as or equivalent to those in the first to third embodiments described above, and will not be described again.
Of course, in other embodiments, the temperature control medium and the fire fighting medium may be the same liquid medium, which is not described herein.
In the present embodiment, the energy storage pack 31 is arranged above the current collecting device 34 in the vertical direction; the current collecting device 34 is located just below the overflow port 33 so that the temperature control medium overflowed in the energy storage bag 31 falls into the current collecting device 34. The temperature control medium overflowed from the overflow port 33 can enter the current collecting device 34 in various modes, in this embodiment, the current collecting device 34 is arranged right below the overflow port 33, and the overflowed temperature control medium falls into the current collecting device 34 under the action of gravity. In particular, dashed line 39 in FIG. 1 represents an indication of the path of the overflowed temperature control medium falling into header 34 under the force of gravity. Of course, in other embodiments, an overflow pipe connected to the collecting device 34 may be connected to the overflow port 33, and the temperature control medium overflowed from the overflow port 33 is drained into the overflow tank 34 by using the overflow pipe, where the collecting device 34 does not need to be disposed directly below the overflow port 33. In other embodiments, a drainage assembly for draining the temperature control medium overflowing from the overflow port 33 into the current collecting device 34 may be further arranged in the energy storage cluster, and the temperature control medium overflowing from the overflow port 33 is drained into the current collecting device 34 by using the drainage assembly, so that the overflow liquid storage tank 34 is not required to be arranged right below the overflow port 33.
As shown in fig. 6-7, in the present embodiment, the energy storage pack 31 includes a pack case 31a and an energy storage assembly 31b located within the pack case 31a, and the energy storage assembly 31b includes at least one energy storage cell. In the preferred implementation of this embodiment, the overflow port 33 is located above the energy storage component 31b, that is, the overflow height in the energy storage bag 31 is higher than the top surface height of the energy storage component 31b, so that the energy storage component 31b can be immersed in the whole, and the temperature control performance of the energy storage component 31b is improved.
As shown in fig. 6, the ladle housing 31a of the present embodiment adopts an open structure having an opening at the top, and the liquid inlet 32 is provided at the bottom of the ladle housing 31a, and the top opening of the ladle housing 31a serves as the overflow port 33. Specifically, in other embodiments, the overflow port 33 may be disposed on the top side wall of the package housing 31a, and the principle thereof is equivalent and will not be described again. When the pack case 31a adopts an open structure with an opening at the top, the fire-fighting liquid inlet pipe 22 is positioned above the energy storage pack 31 and injects or sprays fire-fighting medium into the energy storage pack 31 through the opening at the top of the pack case 13 a.
In other embodiments, as shown in fig. 7, the package shell 31a may be in a closed structure, the liquid inlet 12 is disposed at the bottom of the package shell 31a, and the overflow port 33 is disposed at the top of the package shell 31a, so as to achieve the technical purpose of immersing the energy storage assembly 31b installed in the energy storage package 31. When the pack case 31a may also have a closed type structure, the fire fighting liquid inlet pipe 22 is connected to the energy storage pack 31 to inject or spray the fire fighting medium into the energy storage pack 31.
The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.
Claims (16)
1. A warm integrative package level submergence overflow formula energy storage system disappears which characterized in that: the fire control system comprises a temperature control unit, a fire control unit and at least one energy storage cluster; the energy storage cluster comprises a current collecting device and at least one energy storage bag positioned above the current collecting device, and a liquid inlet and an overflow port are arranged on the energy storage bag;
The temperature control unit is connected with a temperature control liquid inlet main pipe and a temperature control liquid return main pipe, the temperature control liquid inlet main pipe and the energy storage bag are provided with temperature control liquid inlet pipes in one-to-one correspondence, the temperature control liquid inlet pipes are connected with liquid inlets of the corresponding energy storage bags, and the temperature control liquid inlet pipes are provided with proportional control valves for independently controlling the flow of temperature control mediums entering the corresponding energy storage bags;
The current collecting device is used for receiving temperature control medium overflowed from the energy storage bag; the current collecting device is connected with a temperature control liquid return pipe; a suction pump is connected to the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the temperature control liquid return main pipe; or, the temperature control liquid return pipe is connected with the temperature control unit.
2. The temperature-swing, pack-level submerged overflow energy storage system of claim 1, wherein: the current collecting device adopts an overflow liquid storage tank, and the bottom of the overflow liquid storage tank is connected with the temperature control liquid return pipe.
3. The temperature-swing, pack-level submerged overflow energy storage system of claim 2, wherein: still include the waste liquid storage box, be equipped with first overflow pipe on the overflow liquid storage box, first overflow pipe with the waste liquid storage box links to each other.
4. A temperature-swing, pack-level submerged overflow energy storage system as claimed in claim 3 wherein: and a one-way valve is arranged at the liquid inlet of the waste liquid storage box.
5. The temperature-swing, pack-level submerged overflow energy storage system of claim 1, wherein: the flow collecting device adopts an overflow flow collecting bucket, and the bottom of the overflow flow collecting bucket is connected with the temperature control liquid return pipe.
6. The temperature-swing, ladle-to-ladle submerged overflow energy storage system of any of claims 1 to 5, wherein: the device also comprises a liquid return liquid storage tank;
The liquid return liquid storage tank is connected with the temperature control liquid return pipe, the current collecting device is connected with the liquid return liquid storage tank through the temperature control liquid return pipe, and a liquid inlet of the suction pump is connected with the liquid return liquid storage tank; or alternatively, the first and second heat exchangers may be,
The liquid return liquid storage tank is connected with the temperature control liquid return main pipe, a liquid inlet of the suction pump is connected with the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the liquid return liquid storage tank; and a second suction pump is arranged on the temperature control liquid return main pipe.
7. A temperature-swing, pack-level submerged overflow energy storage system as claimed in claim 3 wherein: the device also comprises a liquid return liquid storage tank;
The liquid return liquid storage tank is connected with the temperature control liquid return pipe, the current collecting device is connected with the liquid return liquid storage tank through the temperature control liquid return pipe, and a liquid inlet of the suction pump is connected with the liquid return liquid storage tank; or alternatively, the first and second heat exchangers may be,
The liquid return liquid storage tank is connected with the temperature control liquid return main pipe, a liquid inlet of the suction pump is connected with the temperature control liquid return pipe, and a liquid outlet of the suction pump is connected with the liquid return liquid storage tank; a second suction pump is arranged on the temperature control liquid return main pipe;
the waste liquid storage tank is characterized by further comprising a waste liquid storage tank, wherein a second overflow pipe is arranged on the liquid return liquid storage tank and connected with the waste liquid storage tank.
8. The temperature-swing, pack-level submerged overflow energy storage system of claim 7, wherein: and a one-way valve is arranged at the liquid inlet of the waste liquid storage box.
9. The temperature-swing, pack-level submerged overflow energy storage system of claim 1, wherein: the energy storage package includes a package shell and is located energy storage subassembly in the package shell, energy storage subassembly includes at least one energy storage monomer.
10. The temperature-swing, pack-level submerged overflow energy storage system of claim 9, wherein: the overflow port is located above the energy storage assembly.
11. The temperature-swing, pack-level submerged overflow energy storage system of claim 9, wherein: the ladle shell adopts a closed structure, the liquid inlet is arranged at the bottom of the ladle shell, and the overflow port is arranged at the top of the ladle shell.
12. The temperature-swing, pack-level submerged overflow energy storage system of claim 9, wherein: the bag shell adopts an open structure with an opening at the top, and the liquid inlet is arranged at the bottom of the bag shell; the top opening of the ladle housing is used as the overflow port, or the overflow port is arranged on the top side wall of the ladle housing.
13. The temperature-swing, pack-level submerged overflow energy storage system of claim 2, wherein: the energy storage bag is arranged above the overflow liquid storage tank along the vertical direction; the overflow liquid storage tank is positioned under the overflow port so that temperature control medium overflowed in the energy storage bag falls into the overflow liquid storage tank.
14. The temperature-swing, pack-level submerged overflow energy storage system of claim 2, wherein: the overflow port is connected with an overflow pipe connected with the overflow liquid storage tank; or, a drainage component for guiding the temperature control medium overflowed from the overflow port to enter the overflow liquid storage tank is arranged in the energy storage cluster.
15. The temperature-swing, pack-level submerged overflow energy storage system of claim 9, wherein: the fire-fighting unit is connected with a fire-fighting liquid inlet main pipe, and the fire-fighting liquid inlet main pipe and the energy storage bags are provided with fire-fighting liquid inlet pipes which are used for injecting or spraying fire-fighting media into the energy storage bags in a one-to-one correspondence manner.
16. The temperature-swing, ladle-to-ladle submerged overflow energy storage system of claim 15, wherein: the package shell adopts a closed structure, and the fire-fighting liquid inlet pipe is connected with the top of the energy storage package so as to inject or spray fire-fighting medium into the energy storage package; or, the bag shell adopts an open structure with an opening at the top, and the fire-fighting liquid inlet pipe is positioned above the energy storage bag and is used for injecting or spraying fire-fighting medium into the energy storage bag through the opening at the top of the bag shell.
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