CN216054964U - Safe energy storage system based on lithium battery - Google Patents
Safe energy storage system based on lithium battery Download PDFInfo
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- CN216054964U CN216054964U CN202122439669.9U CN202122439669U CN216054964U CN 216054964 U CN216054964 U CN 216054964U CN 202122439669 U CN202122439669 U CN 202122439669U CN 216054964 U CN216054964 U CN 216054964U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a safety energy storage system based on a lithium battery, which comprises a combined battery cabinet and a liquid cooling circulation mechanism, wherein the combined battery cabinet is provided with a battery box body; the combined battery cabinet is formed by combining and stacking all the energy storage battery cabinets; the left side and the right side of each energy storage battery cabinet are respectively provided with a side heat exchange box, and a liquid cooling heat exchange tube is longitudinally arranged on each side heat exchange box; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube. The safety energy storage system based on the lithium battery utilizes the combination and the superposition of the energy storage battery cabinets to form a combined battery cabinet, thereby facilitating the later replacement and maintenance; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube, so that non-contact rapid heat dissipation can be performed on the lithium battery; utilize the independent setting of side heat transfer box and energy storage battery cabinet, can make liquid cooling heat exchange tube and lithium cell carry out the safety isolation, prevent that the running and the falling of circulation heat transfer pipeline from leaking and causing the influence to the lithium cell, improve system reliability.
Description
Technical Field
The utility model relates to an energy storage system, in particular to a safety energy storage system based on a lithium battery.
Background
With the continuous and high-speed development of new energy sources in the world, along with the development of new energy vehicles, renewable energy sources and distributed power station technologies, the application of energy storage technologies in the aspects of new energy vehicles, renewable energy access, small distributed power stations and the like is receiving more and more attention. The advanced energy storage technology can solve the problem of fluctuation of new energy power generation to a great extent, not only can realize stable output of new energy electric quantity, but also can effectively adjust abnormal motions of power grid voltage, frequency, harmonic waves and the like caused by new energy electric quantity surfing, so that wind power and solar power generation can be safely incorporated into a power grid in a large scale.
As an energy storage technology, compared with other traditional storage batteries, the lithium ion battery has the advantages of high specific energy, high rated voltage, strong heavy-current discharge capacity, high power bearing capacity, low self-discharge rate and the like. However, lithium batteries face two prominent problems in engineering practice: (1) the temperature consistency, the requirement of the lithium battery system on the operating temperature consistency is strict, the high-efficiency lithium battery energy storage system strongly depends on the thermal management of the system, the operating temperature comprises the cell temperature and the ambient temperature, the consistency of the cell circulation is reduced due to the cell temperature difference, the service life of the system is rapidly reduced, the ambient temperature fluctuation influences the heat dissipation of the battery, and the system alarm is caused by the overhigh or overlow ambient temperature; (2) the safety problem, under extreme operating mode, the lithium cell leads to thermal runaway easily after suffering excessive abuse, and the inside active material of battery violently reacts, causes dense smoke even to catch fire, if do not interfere, and the energy storage system arouses the incident easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: the utility model provides a safe energy storage system based on lithium cell can carry out effectual temperature regulation to the energy storage battery cabinet, ensures the temperature uniformity of lithium cell among the energy storage battery cabinet.
In order to achieve the purpose of the utility model, the utility model provides a safety energy storage system based on a lithium battery, which comprises a combined battery cabinet and a liquid cooling circulation mechanism; the combined battery cabinet is formed by combining and stacking all the energy storage battery cabinets; the left side and the right side of each energy storage battery cabinet are respectively provided with a side heat exchange box, and a heat dissipation channel is longitudinally arranged on each side heat exchange box; a liquid cooling heat exchange tube is arranged in each heat dissipation channel; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube.
Furthermore, a temperature control branch pipe communicated with the liquid cooling heat exchange pipe is arranged in each energy storage battery cabinet, and a temperature control valve is connected to each temperature control branch pipe in series.
Further, the liquid cooling circulation mechanism comprises a circulation pump, a heat exchanger and an expansion water tank; each liquid-cooled heat exchange tube vertically distributed on the same side is detachably connected in series to form a main heat exchange tube, a cooling liquid outlet of the main heat exchange tube is communicated with a cooling liquid inlet of the heat exchanger through a liquid outlet pipeline, and a cooling liquid inlet of the main heat exchange tube is communicated with a cooling liquid outlet of the heat exchanger through a liquid inlet pipeline; the circulating pump is connected in series with a cooling liquid inlet or a cooling liquid outlet of the heat exchanger; the liquid inlet of the expansion water tank is communicated with the liquid inlet pipeline.
Further, the liquid outlet pipeline comprises a liquid outlet main pipe and each liquid outlet branch pipe; one end of each liquid outlet branch pipe is respectively communicated with the cooling liquid outlet of each main heat exchange pipe, and the other end of each liquid outlet branch pipe is communicated with the liquid outlet main pipe; each liquid outlet branch pipe is connected with a third valve in series; the liquid outlet main pipe is communicated with a cooling liquid inlet of the heat exchanger.
Furthermore, a first valve is connected in series on a pipeline between the heat exchanger and the circulating pump; and a second valve is connected in series at the communication part of the liquid outlet main pipe and the cooling liquid inlet of the heat exchanger.
Further, the liquid inlet pipeline comprises a liquid inlet main pipe and each liquid inlet branch pipe; one end of each liquid inlet branch pipe is respectively communicated with a cooling liquid inlet of each main heat exchange pipe, and the other end of each liquid inlet branch pipe is communicated with a liquid inlet main pipe; a fourth valve is connected in series with each liquid inlet branch pipe; the liquid inlet header pipe is communicated with a cooling liquid outlet of the heat exchanger.
Furthermore, a fifth valve is connected in series at the communication position of the liquid inlet header pipe and the cooling liquid outlet of the heat exchanger.
Furthermore, the upper side face and the lower side face of each side heat exchange box are provided with heat dissipation vent holes in a penetrating mode, and the heat dissipation vent holes are vertically communicated with the heat dissipation channels.
Furthermore, the combined battery cabinet also comprises a top cover plate and a supporting base; each top vent hole is formed in the top cover plate, and a heat dissipation through groove is formed in the supporting base; when the top cover plate covers the side heat exchange boxes on the uppermost layer, the top vent holes are respectively butted with the heat dissipation vent holes on the uppermost layer; when each energy storage battery cabinet combination is stacked on the supporting base, the heat dissipation through groove is communicated with each heat dissipation ventilation hole at the lowermost layer.
Furthermore, stacking positioning columns are arranged on the upper side surfaces of the side heat exchange boxes, and stacking positioning holes are arranged on the lower side surfaces of the side heat exchange boxes; when each energy storage battery cabinet combination stacks, the stacking positioning column is inserted into the stacking positioning hole at the corresponding position.
The utility model has the beneficial effects that: the energy storage battery cabinets are combined and stacked to form the combined battery cabinet, so that the combined battery cabinets with corresponding sizes can be combined as required, and later-stage replacement and maintenance are facilitated; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube, so that non-contact rapid heat dissipation can be performed on the lithium battery; the side heat exchange boxes are arranged on the left side and the right side of the energy storage battery cabinet, so that the left side and the right side of each energy storage battery cabinet can be synchronously radiated, and the radiating effect of each lithium battery is ensured; utilize the independent setting of side heat transfer box and energy storage battery cabinet, can make liquid cooling heat exchange tube and lithium cell carry out the safety isolation, prevent that the running and the falling of circulation heat transfer pipeline from leaking and causing the influence to the lithium cell, improve system reliability.
Drawings
FIG. 1 is a schematic diagram of a front view of the system of the present invention;
FIG. 2 is a schematic left side view of the system of the present invention;
FIG. 3 is a schematic structural diagram of an energy storage battery cabinet according to the present invention;
fig. 4 is a schematic structural diagram of the assembled battery cabinet of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1 to 4, the disclosed safety energy storage system based on lithium battery includes: the combined battery cabinet and the liquid cooling circulating mechanism; the combined battery cabinet is formed by combining and stacking all the energy storage battery cabinets 1; the left side and the right side of each energy storage battery cabinet 1 are respectively provided with a side heat exchange box 2, and a heat dissipation channel 3 is longitudinally arranged on each side heat exchange box 2; a liquid cooling heat exchange tube 9 is arranged in each heat dissipation channel 3; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube 9.
The energy storage battery cabinets 1 are combined and stacked to form a combined battery cabinet, so that the combined battery cabinet with a corresponding size can be combined as required, and later-stage replacement and maintenance are facilitated; the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube 9, so that non-contact rapid heat dissipation can be performed on the lithium battery 19; the side heat exchange boxes 2 are arranged on the left side and the right side of the energy storage battery cabinet 1, so that the left side and the right side of each energy storage battery cabinet 1 can be synchronously radiated, and the radiating effect of each lithium battery 19 is ensured; utilize the independent setting of side heat exchange box 2 and energy storage battery cabinet 1, can make liquid cooling heat exchange tube 9 and lithium cell 19 carry out the safety isolation, prevent that the running and the leakage of circulation heat transfer pipeline from leading to the fact the influence to lithium cell 19, improve system reliability.
Furthermore, a temperature control branch pipe 18 communicated with the liquid cooling heat exchange pipe 9 is arranged in each energy storage battery cabinet 1, and a temperature control valve 16 is connected in series to each temperature control branch pipe 18. Utilize temperature-sensing valve 16 can carry out on-off control to control by temperature change bleeder 18 according to the temperature in energy storage battery cabinet 1 to when the temperature surpassed the temperature threshold value of setting for, indicate inside conflagration breaing out, then switch on control by temperature change bleeder 18, thereby spray the coolant liquid to lithium cell 19, realize the cooling effect of putting out a fire.
Further, the liquid cooling circulation mechanism comprises a circulation pump 4, a heat exchanger 6 and an expansion water tank 21; each liquid-cooled heat exchange tube 9 vertically distributed at the same side is detachably connected in series to form a main heat exchange tube, a cooling liquid outlet of the main heat exchange tube is communicated with a cooling liquid inlet of the heat exchanger 6 through a liquid outlet pipeline, and a cooling liquid inlet of the main heat exchange tube is communicated with a cooling liquid outlet of the heat exchanger 6 through a liquid inlet pipeline; the circulating pump 4 is connected in series with a cooling liquid inlet or a cooling liquid outlet of the heat exchanger 6; the liquid inlet of the expansion water tank 21 is communicated with a liquid inlet pipeline.
By utilizing the matching arrangement of the circulating pump 4, the heat exchanger 6 and the liquid cooling heat exchange tube 9, the temperature control of the lithium battery 19 in the energy storage battery cabinet 1 can be realized, and the lithium battery 19 is maintained in the optimal working state; the expansion tank 21 can meet the requirement of thermal expansion of the cooling liquid.
Further, the liquid outlet pipeline comprises a liquid outlet main pipe 12 and each liquid outlet branch pipe 13; one end of each liquid outlet branch pipe 13 is respectively communicated with the cooling liquid outlet of each main heat exchange pipe, and the other end of each liquid outlet branch pipe is communicated with the liquid outlet main pipe 12; a third valve 10 is connected in series on each liquid outlet branch pipe 13; the liquid outlet main pipe 12 is communicated with a cooling liquid inlet of the heat exchanger 6. The cooling liquid of each main heat exchange tube can be refluxed by matching the liquid outlet main tube 12 with each liquid outlet branch tube 13; the third valve 10 can be used for realizing independent on-off control of each liquid outlet branch pipe 13.
Further, a first valve 5 is connected in series on a pipeline between the heat exchanger 6 and the circulating pump 4; a second valve 11 is arranged in series at the communication position of the liquid outlet main pipe 12 and the cooling liquid inlet of the heat exchanger 6.
The first valve 5 can be used for conveniently realizing on-off control between the heat exchanger 6 and the circulating pump 4; the second valve 11 can be used for conveniently realizing on-off control of the liquid outlet main pipe 12.
Further, the liquid inlet pipeline comprises a liquid inlet main pipe 14 and each liquid inlet branch pipe 15; one end of each liquid inlet branch pipe 15 is respectively communicated with a cooling liquid inlet of each main heat exchange pipe, and the other end of each liquid inlet branch pipe is communicated with the liquid inlet header pipe 14; each liquid inlet branch pipe 15 is connected with a fourth valve 8 in series; the inlet manifold 14 is in communication with the coolant outlet of the heat exchanger 6. The liquid inlet header pipe 14 is matched with each liquid inlet branch pipe 15, so that the uniform distribution and conveying of the cooling liquid can be realized; the fourth valve 8 can be used for realizing independent on-off control of each liquid inlet branch pipe 15.
Furthermore, a fifth valve 7 is arranged in series at the communication position of the liquid inlet header pipe 14 and the cooling liquid outlet of the heat exchanger 6. The fifth valve 7 can be used for conveniently realizing on-off control of the liquid inlet main pipe 14.
Further, the upper side and the lower side of each side heat exchange box 2 are all provided with a heat dissipation vent hole 17 in a penetrating manner, and the heat dissipation vent holes 17 are vertically communicated with the heat dissipation channel 3. The ventilation and heat dissipation of the side heat exchange box 2 can be facilitated by utilizing the heat dissipation ventilation holes 17, so that the liquid cooling heat exchange tubes 9 in the heat dissipation channels 3 are air-cooled through heat dissipation airflow.
Further, the assembled battery cabinet further comprises a top cover plate 23 and a supporting base 26; each top vent hole 24 is arranged on the top cover plate 23, and a heat dissipation through groove 27 is arranged on the supporting base 26; when the top cover plate 23 is covered on each side heat exchange box 2 at the uppermost layer, each top vent hole 24 is respectively butted with each heat dissipation vent hole 17 at the uppermost layer; when the energy storage battery cabinets 1 are combined and stacked on the support base 26, the heat dissipation through grooves 27 are communicated with the heat dissipation vent holes 17 at the lowest layer. The energy storage battery cabinets 1 which are combined and stacked can be integrally clamped and installed by matching the top cover plate 23 and the supporting base 26, so that the combination and stacking stability is ensured; the through cooperation of the top vent holes 24, the heat dissipation vent holes 17 and the heat dissipation through grooves 27 is utilized, so that air cooling can be conveniently realized.
Further, stacking positioning columns 22 are arranged on the upper side surfaces of the side heat exchange boxes 2, and stacking positioning holes are arranged on the lower side surfaces of the side heat exchange boxes 2; when all the energy storage battery cabinets 1 are combined and stacked, the stacking positioning columns 22 are inserted into the stacking positioning holes at the corresponding positions; each top positioning hole 25 is arranged on the top cover plate 23, and each bottom positioning column is arranged on the upper side surface of the supporting base 26; when the top cover plate 23 is covered on each side heat exchange box 2 at the uppermost layer, each stacking and positioning column 22 at the uppermost layer is respectively inserted into each top positioning hole 25; when the energy storage battery cabinets 1 are combined and stacked on the support base 26, the bottom positioning columns are respectively inserted into the stacking positioning holes in the lowest layer. The stability of combination and stacking of each energy storage battery cabinet 1 can be enhanced by the insertion fit of the stacking positioning holes and the stacking positioning columns 22; the top positioning holes 25 and the bottom positioning columns are used for inserting and matching the uppermost layer and the lowermost layer respectively, and the stability of the combined battery cabinet can be further enhanced.
Further, the coolant outlet and the coolant inlet of each liquid-cooled heat exchange tube 9 are extended from the rear side of the heat dissipation channel 3. Set up coolant liquid export and coolant liquid import into to stretch out by the rear side of heat dissipation channel 3 to be convenient for follow the unified connecting line in rear side, conveniently overhaul and maintain.
In the safety energy storage system based on the lithium battery, the first valve 5, the second valve 11, the third valve 10, the fourth valve 8 and the fifth valve 7 are all existing electric control valves, and the temperature control valve 16 is an existing temperature control valve.
The safety energy storage system based on the lithium battery disclosed by the utility model has the advantages that:
(1) compared with an air cooling system, the circulating heat exchange pipeline can exchange heat with the energy storage battery cabinet 1 through the heat exchanger 6 and the liquid cooling heat exchange pipe 9, and the temperature of the system can be maintained to be uniform (the variation range is less than 3 ℃);
(2) the battery sealing cabinet is closely arranged between the adjacent heat exchange modules, so that the heat exchange modules and the energy storage battery cabinet 1 can be separated from each other while effective heat dissipation is realized, the lithium battery 19 is prevented from being influenced by leakage of a circulating heat exchange pipeline, and the reliability of the system is improved;
(3) when a fire accident happens in the energy storage battery cabinet 1, the cooling liquid in the circulating heat exchange pipeline can be used as fire-fighting water to be sprayed onto the lithium battery 19 in the energy storage battery cabinet 1, so that the effects of temperature reduction and fire extinguishment are achieved.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. The utility model provides a safe energy storage system based on lithium cell which characterized in that: the liquid cooling circulation device comprises a combined battery cabinet and a liquid cooling circulation mechanism; the combined battery cabinet is formed by combining and stacking all the energy storage battery cabinets (1); the left side and the right side of each energy storage battery cabinet (1) are respectively provided with a side heat exchange box (2), and a heat dissipation channel (3) is longitudinally arranged on each side heat exchange box (2); a liquid cooling heat exchange tube (9) is arranged in each heat dissipation channel (3); the liquid cooling circulation mechanism is used for providing cooling liquid for circulation of each liquid cooling heat exchange tube (9).
2. The lithium battery-based safety energy storage system of claim 1, wherein: a temperature control branch pipe (18) communicated with the liquid cooling heat exchange pipe (9) is arranged in each energy storage battery cabinet (1), and a temperature control valve (16) is connected in series on each temperature control branch pipe (18).
3. The lithium battery-based safety energy storage system of claim 1, wherein: the liquid cooling circulation mechanism comprises a circulation pump (4), a heat exchanger (6) and an expansion water tank (21); each liquid-cooled heat exchange tube (9) vertically distributed on the same side is detachably connected in series to form a main heat exchange tube, a cooling liquid outlet of the main heat exchange tube is communicated with a cooling liquid inlet of the heat exchanger (6) through a liquid outlet pipeline, and a cooling liquid inlet of the main heat exchange tube is communicated with a cooling liquid outlet of the heat exchanger (6) through a liquid inlet pipeline; the circulating pump (4) is connected in series with a cooling liquid inlet or a cooling liquid outlet of the heat exchanger (6); the liquid inlet of the expansion water tank (21) is communicated with the liquid inlet pipeline.
4. The lithium battery-based safety energy storage system of claim 3, wherein: the liquid outlet pipeline comprises a liquid outlet main pipe (12) and each liquid outlet branch pipe (13); one end of each liquid outlet branch pipe (13) is respectively communicated with the cooling liquid outlet of each main heat exchange pipe, and the other end of each liquid outlet branch pipe is communicated with the liquid outlet main pipe (12); each liquid outlet branch pipe (13) is connected with a third valve (10) in series; the liquid outlet main pipe (12) is communicated with a cooling liquid inlet of the heat exchanger (6).
5. The lithium battery-based safety energy storage system of claim 4, wherein: a first valve (5) is connected in series on a pipeline between the heat exchanger (6) and the circulating pump (4); a second valve (11) is connected in series at the communication part of the liquid outlet main pipe (12) and the cooling liquid inlet of the heat exchanger (6).
6. The lithium battery-based safety energy storage system of claim 3, wherein: the liquid inlet pipeline comprises a liquid inlet main pipe (14) and each liquid inlet branch pipe (15); one end of each liquid inlet branch pipe (15) is respectively communicated with a cooling liquid inlet of each main heat exchange pipe, and the other end of each liquid inlet branch pipe is communicated with a liquid inlet main pipe (14); each liquid inlet branch pipe (15) is connected with a fourth valve (8) in series; the liquid inlet header pipe (14) is communicated with a cooling liquid outlet of the heat exchanger (6).
7. The lithium battery-based safety energy storage system of claim 6, wherein: and a fifth valve (7) is connected in series at the communication part of the liquid inlet header pipe (14) and the cooling liquid outlet of the heat exchanger (6).
8. The lithium battery-based safety energy storage system of claim 1, wherein: the upper side and the lower side of each side heat exchange box (2) are provided with heat dissipation vent holes (17) in a penetrating way, and the heat dissipation vent holes (17) are vertically communicated with the heat dissipation channel (3).
9. The lithium battery-based safety energy storage system of claim 8, wherein: the combined battery cabinet also comprises a top cover plate (23) and a supporting base (26); each top vent hole (24) is arranged on the top cover plate (23), and a heat dissipation through groove (27) is arranged on the supporting base (26); when the top cover plate (23) is covered on each side heat exchange box (2) at the uppermost layer, each top vent hole (24) is respectively butted with each heat dissipation vent hole (17) at the uppermost layer; when all the energy storage battery cabinets (1) are combined and stacked on the supporting base (26), the heat dissipation through grooves (27) are communicated with all the heat dissipation ventilation holes (17) at the lowest layer.
10. The lithium battery-based safety energy storage system of claim 9, wherein: the upper side surface of each side heat exchange box (2) is provided with a stacking positioning column (22), and the lower side surface of each side heat exchange box (2) is provided with a stacking positioning hole; when all the energy storage battery cabinets (1) are combined and stacked, the stacking positioning columns (22) are inserted into the stacking positioning holes in the corresponding positions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122439669.9U CN216054964U (en) | 2021-10-11 | 2021-10-11 | Safe energy storage system based on lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122439669.9U CN216054964U (en) | 2021-10-11 | 2021-10-11 | Safe energy storage system based on lithium battery |
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| CN216054964U true CN216054964U (en) | 2022-03-15 |
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| CN202122439669.9U Active CN216054964U (en) | 2021-10-11 | 2021-10-11 | Safe energy storage system based on lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276752A (en) * | 2023-11-23 | 2023-12-22 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
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2021
- 2021-10-11 CN CN202122439669.9U patent/CN216054964U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276752A (en) * | 2023-11-23 | 2023-12-22 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
| CN117276752B (en) * | 2023-11-23 | 2024-01-26 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
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