CN116767709A - Electrolyte connection protection device for lithium iron phosphate battery - Google Patents
Electrolyte connection protection device for lithium iron phosphate battery Download PDFInfo
- Publication number
- CN116767709A CN116767709A CN202311074915.2A CN202311074915A CN116767709A CN 116767709 A CN116767709 A CN 116767709A CN 202311074915 A CN202311074915 A CN 202311074915A CN 116767709 A CN116767709 A CN 116767709A
- Authority
- CN
- China
- Prior art keywords
- tank body
- disc
- frame
- electrolyte
- iron phosphate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 95
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 56
- 238000004321 preservation Methods 0.000 claims abstract description 52
- 230000008093 supporting effect Effects 0.000 claims abstract description 26
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 229910000746 Structural steel Inorganic materials 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/12—Supports
- B65D90/20—Frames or nets, e.g. for flexible containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/06—Coverings, e.g. for insulating purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/54—Gates or closures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The application provides an electrolyte connection protection device for a lithium iron phosphate battery, which is used for solving the problems that a plurality of units of an existing electrolyte storage tank cannot be stacked, electrolyte in the tank fluctuates during transportation and the tank body is insulated; the lithium iron phosphate battery electrolyte storage device comprises a tank body for storing lithium iron phosphate battery electrolyte, a frame body for connecting the tank body, a heat preservation device positioned between the tank body and the frame body, and a wave prevention device arranged in the tank body; the lower end of the outer side of the tank body is fixedly connected with four supporting rods, and the outer sides of the supporting rods are fixedly connected with baffle hooks; the frame body comprises a bottom frame, four corners of the upper end of the bottom frame are respectively and fixedly connected with upright posts, and the upper ends of the four upright posts are detachably connected with a baffle frame; the wave-proof device comprises a screw and a disc, the screw is inserted into the circular groove, the screw is connected with an elliptical floating ball in a sliding manner, the diameter of the circular groove is smaller than the long axis of the elliptical floating ball, and the circular groove is blocked when the elliptical floating ball floats upwards; the inner part of the tank body is divided into an upper layer and a lower layer by the disc, inert gas is filled in the upper layer space, and electrolyte of the lithium iron phosphate battery is contained in the lower layer space.
Description
Technical Field
The application relates to the technical field of electrolyte safe storage, in particular to a connecting and protecting device for an electrolyte of a lithium iron phosphate battery.
Background
The lithium iron phosphate electrolyte is a mixed solution composed of iron phosphate (LiFePO 4), potassium ions and chloride ions. The electrolyte is a chemical substance with corrosiveness and inflammability, and special attention is required to be paid to the safety of storage and transportation, and serious accidents can be caused once leakage occurs.
Stainless steel electrolyte tanks are a common type of container for storing electrolyte, and in order to prevent leakage of electrolyte, generally, a leakage prevention means, such as a valve, a pressure relief device, a safety valve, etc., is provided on the tank body in order to control and handle leakage in time when an accident occurs.
In the transportation, electrolyte fluctuation in the tank body can also lead to external oxygen to enter into the tank body to react with the electrolyte, and simultaneously, the electrolyte is very easy to lead to the tank body to overturn and the electrolyte to reveal after reaching the resonance of same frequency to the internal wall of tank, has the security risk.
At present, aiming at the links of factory storage and vehicle transportation, the stainless steel storage tank for the electrolyte of the lithium iron phosphate battery has the following practical defects:
1. the problem of warehouse storage is that the barrel-shaped tank bodies cannot be stacked in multiple layers and are easy to topple, and only one layer is placed at present, so that the warehouse utilization rate is low;
2. in order to prevent electrolyte in the tank body from fluctuating during transportation, inert gas is filled in the tank body, however, the inert gas in the tank body is positioned in a space above the liquid level of the electrolyte and cannot suppress the fluctuation of the electrolyte; in other fields, a wave-proof plate is arranged in the tank body, so that solution fluctuation can be effectively prevented, however, as the electrolyte storage tank is a vertical tank body, a filling opening is arranged at the upper end of the tank body, a discharge opening is arranged at the lower end of the tank body, the conventional wave-proof plate cannot be adapted to the electrolyte storage tank, and the fluctuation of the liquid in the tank body still causes the leakage of the electrolyte and the entering of external air in the transportation process;
3. the transportation temperature requirement of electrolyte is higher, and during electrolyte storage tank transportation, generally set up the heat preservation outside the jar body, however, present heat preservation all is through screw or direct welding on the storage tank, inconvenient or can't dismantle the heat preservation and change.
Based on this, the applicant provides a connection protection device acting on the electrolyte tank.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the application provides a connecting and protecting device for electrolyte of a lithium iron phosphate battery, which is used for solving the problems that a plurality of units of the existing electrolyte storage tank device cannot be stacked, and electrolyte in the tank fluctuates and keeps warm during transportation.
The technical scheme is that the lithium iron phosphate battery electrolyte connection protection device comprises a tank body for storing the lithium iron phosphate battery electrolyte, and is characterized by further comprising a frame body for connecting the tank body, a heat preservation device positioned between the tank body and the frame body and a wave prevention device arranged in the tank body;
four support rods are fixedly connected to the lower end of the outer side of the tank body, and blocking hooks are fixedly connected to the outer sides of the support rods;
the frame body comprises a bottom frame, four corners of the upper end of the bottom frame are respectively and fixedly connected with upright posts, and the upper ends of the four upright posts are detachably connected with a baffle frame;
the wave-proof device comprises a screw rod and a disc, wherein the outer wall of the disc is in sliding contact with the inner wall of the tank body, a circular groove penetrating through the disc is formed in the axis of the disc, a connecting frame is fixedly connected to the disc, a plurality of connecting rods in the connecting frame are fixedly connected with a threaded sleeve coaxial with the disc together, the screw rod is in threaded rotation connection with the threaded sleeve, the screw rod is inserted into the circular groove, an elliptical floating ball is connected to the screw rod in a sliding manner, the diameter of the circular groove is smaller than the long axis of the elliptical floating ball, and the circular groove is plugged when the elliptical floating ball floats upwards; the screw rod is rotationally connected to the upper end of the tank body, the upper end of the screw rod penetrates through the tank body and is connected with a handle, a gap is reserved between the lower end of the screw rod and the bottom wall in the tank body, two guide rods are fixedly connected to the bottom wall in the tank body, and the guide rods penetrate through the disc to limit the rotation of the disc; the inner part of the tank body is divided into an upper layer and a lower layer by the disc, inert gas is filled in the upper layer space, and electrolyte of the lithium iron phosphate battery is contained in the lower layer space;
the heat preservation device comprises a cylindrical supporting cover, a plurality of split heat preservation layers are arranged inside the supporting cover, an avoidance channel is formed between every two adjacent heat preservation layers, the supporting columns are located in the avoidance grooves, the supporting cover is sleeved outside the tank body, the bottom of the supporting cover is abutted to the blocking hooks, the blocking frames are in contact with the upper ends of the supporting covers, and the heat preservation device is fixed between the frame body and the tank body.
Preferably, the underframe of the frame body comprises a frame consisting of four cross beams, at least one cross beam is provided with an avoidance opening, the lower end of the frame is fixedly connected with a plurality of bases, the frame is fixedly connected with a plurality of first connecting rods which are transversely and longitudinally staggered, the cross section area of each first connecting rod is smaller than that of the frame, the four corners of the frame are fixedly connected with backing plates, and the lower ends of the supporting rods are fixedly connected to the backing plates.
Preferably, the frame of the frame body comprises two vertical square frames, two outwards extending cross bars are arranged at the upper ends of the square frames, the two square frames are symmetrically arranged, two second connecting rods are fixedly connected to the two cross bars on the same side of the two square frames, the two second connecting rods are respectively positioned at two ends of the cross bars, the two square frames are fixedly connected into a whole, one outwards extending ends of the four cross bars respectively correspond to the upper ends of the four upright posts, the square frames are fixedly connected with the four upright posts through bolts, and the upper ends of the upright posts are fixedly connected with angle iron plates.
Preferably, the lower end surface of the disc is horizontal, the upper end surface of the disc is provided with an inclined surface, and the height of the inclined surface in the direction from the outer edge of the disc to the axis decreases progressively.
Preferably, the lower end of the disc is provided with a plurality of trapezoid plates uniformly distributed along the circumferential direction of the disc, and the trapezoid plates are perpendicular to the lower end face of the disc.
Preferably, a sleeve penetrating through the elliptical floating ball is arranged on the short shaft of the elliptical floating ball, the screw is inserted into the sleeve, and the lower end of the screw is fixedly connected with a baffle through a screw.
Preferably, a spring ring positioned at the notch of the circular disc is arranged at the lower end of the circular disc, buoyancy force on the elliptical floating ball acts on the spring ring, and the maximum elastic force of the spring ring is smaller than the buoyancy force of a half elliptical floating ball immersed in electrolyte of the lithium iron phosphate battery.
Preferably, the material of the wave-proof device is polyethylene plastic or steel.
Preferably, the heat-insulating layer is EPS polyphenyl board.
Preferably, the upper end of the tank body is provided with a charging port, the upper end of the tank body is provided with an air inlet valve and a pressure relief valve, the lower end of the tank body is provided with a discharging pipeline, and the discharging pipeline extends out of the frame body through the avoiding port.
Compared with the prior art, the technical scheme provided by the application has the following remarkable effects:
1. according to the application, through the matching arrangement of the frame body and the tank body, the tank body is connected and protected by the frame body, and the detachable baffle frame is arranged at the upper end of the frame body, so that the tank body and the heat preservation device are convenient to assemble, the heat preservation device can be easily disassembled when heat preservation is not needed, the square frame body is more convenient and tidy to put, and meanwhile, under the supporting effect of the frame body, the stacking of a plurality of tank bodies can be satisfied, and the warehouse utilization rate is improved.
According to the application, the wave-proof device is arranged in the tank body, and the disc moves up and down in the tank body through the support and adjustment of the screw rod, so that the sizes of an upper space and a lower space in the tank body are changed, no matter how small amount of electrolyte of the lithium iron phosphate battery is filled in the tank body, the electrolyte can be limited in the lower space with a small limit, and the wave-proof effect on the electrolyte is realized under the division effect of the trapezoid plate on the liquid; under the plugging effect of the elliptical floating ball, the automatic isolation of the lower space and the upper space is realized, and meanwhile, inert gas filled in the upper space is matched, so that the electrolyte of the lithium iron phosphate battery in the tank body is more stable, and the phenomenon that external oxygen enters and reacts with the electrolyte of the lithium iron phosphate battery is avoided.
According to the application, the heat preservation device consisting of the support cover and the heat preservation layer is arranged, and the heat preservation device is connected with the frame body and the tank body in a matched manner, so that the heat preservation device can be simply disassembled and assembled, plays a good role in connection protection, and meets the requirements of use during storage and transportation.
Drawings
FIG. 1 is a schematic view of the assembled connection of the frame, tank and insulation device of the present application.
Fig. 2 is a schematic view of the assembled connection of the frame and the can of the present application.
Fig. 3 is a schematic view showing the removal of the retainer on the frame body of the present application.
Fig. 4 is a schematic diagram showing the disassembly of the tank and the heat preservation device of the application.
Fig. 5 is a schematic cross-sectional view of a can body of the present application.
Fig. 6 is a schematic view of the structure of the inside of the can body of the present application.
Fig. 7 is a schematic structural view of the wave preventing device of the present application.
Fig. 8 is a schematic view of the stacking of the frames and cans of the present application.
Reference numerals in the schematic drawings illustrate:
100. a tank body; 101. a support rod; 102. a catch hook; 103. a charging port; 104. an intake valve; 105. a pressure release valve; 106. a discharge pipe; 107. a guide rod;
200. a frame body; 201. a chassis; 202. a column; 203. a baffle frame; 2011. a frame; 2012. an avoidance port; 2013. a base; 2014. a first connecting rod; 2015. a backing plate; 2021. Angle iron plates;
2031. a square frame; 2032. a cross bar; 2033. a second connecting rod;
300. a heat preservation device; 301. a support cover; 302. a heat preservation layer; 303. an avoidance channel;
400. a wave-proof device; 401. a screw; 402. a disc; 403. a circular groove; 404. a connecting frame; 405. a thread sleeve; 406. an elliptical floating ball; 4011. a baffle; 4012. a handle; 4021. an inclined surface; 4022. a trapezoidal plate; 4023. a spring ring; 4061. a sleeve.
Detailed Description
The following describes the embodiments of the present application in further detail with reference to the drawings.
Referring to fig. 1 to 2, a connection protection device for lithium iron phosphate battery electrolyte includes a tank 100 for storing lithium iron phosphate battery electrolyte, a frame 200 for connecting the tank 100, a heat preservation device 300 between the tank 100 and the frame 200, and a wave prevention device 400 disposed in the tank 100, to form an interconnection device.
Referring to fig. 4, four support rods 101 are fixedly connected to the lower end of the outer side of the tank body 100, a blocking hook 102 is fixedly connected to the outer side of the support rods 101, and the blocking hook 102 is used for receiving a heat preservation device 300; the upper end of the tank body 100 is provided with a charging port 103, the upper end of the tank body 100 is provided with an air inlet valve 104 and a pressure relief valve 105, the lower end of the tank body 100 is provided with a discharging pipeline 106, the air inlet valve 104 is used for filling inert gas into the tank body 100, and further, the external air is prevented from entering the tank body 100, and component invalidation caused by the contact reaction of electrolyte of the lithium iron phosphate battery and oxygen is avoided; only the main devices on the can body 100 are emphasized here, and other auxiliary structures and devices on the can body 100 are not described here in detail because they do not belong to the main technical features of the present application.
In some embodiments, referring to fig. 3, the frame 200 includes a chassis 201, four corners of the upper end of the chassis 201 are fixedly connected with columns 202, and the upper ends of the four columns 202 are detachably connected with a baffle frame 203.
Further, the underframe 201 of the frame body 200 includes a frame 2011 formed by four beams, at least one beam is provided with an avoidance port 2012, the discharge pipeline 106 extends out of the frame body 200 through the avoidance port 2012, the lower end of the frame 2011 is fixedly connected with a plurality of bases 2013, the frame 2011 is fixedly connected with a plurality of first connecting rods 2014 which are staggered transversely and longitudinally, the cross-sectional area of the first connecting rods 2014 is smaller than that of the frame 2011, four corners of the frame 2011 are fixedly connected with backing plates 2015, and the lower ends of the supporting rods 101 are fixedly connected to the backing plates 2015.
Further, the baffle frame 203 of the frame body 200 comprises two vertical square frames 2031, two outwards extending cross bars 2032 are arranged at the upper ends of the square frames 2031, the two square frames 2031 are symmetrically arranged, two second connecting rods 2033 are fixedly connected to the two cross bars 2032 on the same side of the two square frames 2031, the two second connecting rods 2033 are respectively located at two ends of the cross bars 2032, the two square frames 2031 are fixedly connected into a whole, one outwards extending ends of the four cross bars 2032 respectively correspond to the upper ends of the four upright posts 202, and the square frames 2031 are fixedly connected with the four upright posts 202 through bolts.
Specifically, the tank 100 may be fixed to the frame 200 or separated from the frame 200, and the tank 100 may be placed vertically on the ground by using a support rod 101 of the tank 100.
When the tank body 100 is fixed with the frame body 200, the protection of the tank body 100 is better in place, the supporting rod 101 is fixedly connected to the backing plate 2015, the tank body 100 is fixed inside the frame body 200, and meanwhile, a gap between the tank body 100 and the frame body 200 can be used for placing the heat preservation device 300.
Further, an angle iron plate is fixedly connected to the upper end of the upright post 202, the upper end of the angle iron plate extends to the upper side of the upright post 202, when a plurality of frame bodies 200 are stacked, the angle iron plate plays a role in fixing the frame bodies 200 above,
referring to fig. 8, the plurality of frames 200 may be stacked together with a plurality of layers being not more than three layers under the support of the three-dimensional frame 200, and the plurality of frames 200 may be stacked by a forklift during operation.
The above embodiment solves the problem that the barrel-shaped can body 100 cannot be stacked in multiple layers, is easy to topple over, and causes low warehouse utilization rate.
Meanwhile, the conveniently detached baffle frame 203 facilitates the assembly of the tank body 100; compared with the prior art that the heat preservation is directly and fixedly connected to the outside of the tank body 100 by adopting bolt fixing or welding, the baffle frame 203 and the baffle hook 102 are matched, so that the heat preservation device 300 is more convenient to fix, and the heat preservation device 300 is more convenient to detach when not used.
In some embodiments, please refer to fig. 5, 6 and 7, the wave-preventing device 400 includes a screw 401 and a disc 402, the disc 402 is coaxially disposed with the tank 100, the outer wall of the disc 402 is in sliding contact with the inner wall of the tank 100, a soft pad is disposed at the outer edge of the disc 402 to assist the disc 402 to contact and slide with the inner wall of the tank 100, a circular groove 403 penetrating the disc 402 is formed at the axial center of the disc 402, a connecting frame 404 is fixedly connected to the disc 402, a threaded sleeve 405 coaxial with the disc 402 is fixedly connected to a plurality of connecting rods in the connecting frame 404, the screw 401 is in threaded rotation with the threaded sleeve 405, the disc 402, the connecting frame 404 and the threaded sleeve 405 are integrally formed, the disc 402 is connected with the screw 401 through the threaded sleeve 405, so that the circular groove 403 at the axial center of the disc 402 is reserved, the screw 401 is inserted into the circular groove 403, an oval float 406 is slidingly connected to the screw 401, the diameter of the circular groove 403 is smaller than the long axis of the oval float 406, and the circular groove 403 is plugged when the oval float 406 floats.
The arrangement of the disc 402 is different from the wave-proof plates in other fields, so that the filling of electrolyte can not be influenced, and meanwhile, the height of the disc 402 can be freely changed to cater to different electrolyte liquid level heights of the tank body 100, and the wave-proof effect is better.
Referring to fig. 5, the disk 402 divides the inside of the can 100 into upper and lower layers, the upper space is filled with inert gas, and the lower space contains lithium iron phosphate battery electrolyte.
Further, screw 401 rotates and connects in jar body 100 upper end, the upper end of screw 401 runs through jar body 100 and is connected with handle 4012, rotate handle 4012 can make screw 401 rotate, the junction of screw 401 and jar body 100 is provided with rotary seal spare, carry out sealing treatment to the junction, leave the clearance between screw 401 lower extreme and jar body 100 inner bottom wall, the screw 401 lower extreme is not contacted with jar body 100 inner wall promptly, screw 401's setting and screw 401's rotation can not cause the influence to the discharge gate on jar body 100, fixedly connected with two guide bars 107 on the internal diapire of jar body 100, guide bar 107 runs through on disc 402, limit disc 402's rotation, then when screw 401 rotates, realize disc 402 along screw 401 gliding effect from top to bottom.
Further, the lower end surface of the disc 402 is horizontal, the upper end surface of the disc 402 is provided with an inclined surface 4021, the height of the inclined surface 4021 in the direction from the outer edge of the disc 402 to the axis is gradually decreased, the inclined surface 4021 is used for better guiding electrolyte of the lithium iron phosphate battery, when the electrolyte of the lithium iron phosphate battery is poured into the can body 100 through the charging port 103, the electrolyte firstly falls onto the disc 402, then is guided into the circular groove 403 through the inclined surface 4021 on the disc 402, and finally flows into a lower space in the can body 100 through the circular groove 403.
Specifically, in the initial state, the disc 402 is located at the upper end of the screw 401, that is, the disc 402 is located at an upper position in the can body 100, and correspondingly, the handle 4012 can be manually turned to adjust the disc 402 to a specified height in the can body 100, so as to control the capacity of the lower space, and thus, the use of the can body 100 when filling different amounts of lithium iron phosphate battery electrolyte is satisfied.
When the electrolyte of the lithium iron phosphate battery is not filled, the elliptical floating ball 406 is only under the action of gravity because the elliptical floating ball 406 is not acted by the buoyancy, and the elliptical floating ball 406 falls to the bottommost part of the screw 401.
When filling lithium iron phosphate battery electrolyte, liquid flows into the tank body 100 through the circular groove 403 after being guided by the circular groove 402, the elliptical floating ball 406 rises along with the increase of the liquid level in the tank body 100, and the path of the elliptical floating ball 406 moving up and down is fixed under the guiding action of the screw 401 until the opening of the circular groove 403 is plugged, if the lithium iron phosphate battery electrolyte is continuously filled, the lithium iron phosphate battery electrolyte can be accumulated in the upper space of the circular groove 402.
It should be emphasized here that, because the insertion position of the guide rod 107 and the disc 402 has a gap, and the sealing of the circular groove 403 by the elliptical floating ball 406 is not particularly fastened only under the action of the buoyancy, after the lithium iron phosphate battery electrolyte is filled into the upper space of the disc 402, the use of the can 100 is not affected, and when all the liquid levels in the can 100 are lowered, the elliptical floating ball 406 is also automatically separated from the sealing of the circular groove 403, and the lithium iron phosphate battery electrolyte above the disc 402 automatically falls to the bottom of the can.
However, in order to effectively prevent the solution in the can 100 from fluctuating, it is not advisable to fill too much of the upper space of the disk 402 with the electrolyte of the lithium iron phosphate battery.
In actual use, taking the disc 402 as a limit, when the elliptical floating ball 406 is plugged in the circular groove 403, the filling is recommended to stop.
Further, in order to reduce the fluctuation of the liquid in the space below the disc 402, the lower end of the disc 402 is provided with a plurality of trapezoid boards 4022 uniformly distributed along the circumferential direction of the trapezoid boards 4022, and the trapezoid boards 4022 are perpendicular to the lower end surface of the disc 402, so that when the disc 402 moves to a limiting position, the trapezoid boards 4022 cannot collide with the inner bottom wall of the tank 100, and the trapezoid boards 4022 are prevented from interfering with the movement of the disc 402.
Further, a sleeve 4061 penetrating the elliptical floating ball 406 is arranged on the short shaft of the elliptical floating ball, the screw 401 is inserted into the sleeve 4061, the baffle 4011 is fixedly connected to the lower end of the screw 401 through a screw, a screw hole is formed in the lower end of the screw 401, and the baffle 4011 is fixedly connected to the lower end of the screw 401 through connection of the screw and the screw hole, so that the disc 402 and the elliptical floating ball 406 are conveniently assembled on the screw 401.
Further, the lower end of the disc 402 is provided with a spring ring 4023 positioned at the opening of the circular groove 403, buoyancy force on the elliptical floating ball 406 acts on the spring ring 4023, and the spring ring 4023 is used for slowing down the sealing progress of the elliptical floating ball 406 to the circular groove 403, so that liquid can be better led into the lower space of the disc 402 when electrolyte of the lithium iron phosphate battery is filled.
Specifically, the buoyancy is defined as ffloat=g row, and the calculation formula is: ffloat = pgv row of pgv, where pgv represents the density of the liquid in kilograms per cubic meter; g represents a constant, g=9.8N/kg; the V-row indicates the volume of displaced liquid in cubic meters.
When the object is not completely immersed in water, the greater the immersion depth, i.e., the greater the volume of the immersed portion, the greater the buoyancy.
Therefore, the maximum elastic force of the spring ring 4023 is set to be smaller than the buoyancy of the half elliptical floating ball 406 immersed in the electrolyte of the lithium iron phosphate battery, and when the liquid level of the electrolyte of the lithium iron phosphate battery in the tank body 100 rises to drive the elliptical floating ball 406 to rise to be in contact with the spring ring 4023, the elliptical floating ball 406 can completely compress the spring ring 4023 until the half elliptical floating ball 406 is immersed in the electrolyte of the lithium iron phosphate battery, so that the elliptical floating ball 406 seals the circular groove 403 on the disc 402.
Further, according to the characteristics of the lithium iron phosphate battery electrolyte, the material of the wave-preventing device 400 is selected from polyethylene plastic or steel, wherein the disc 402, the elliptical floating ball 406 and the trapezoid plate 4022 are preferably made of polyethylene plastic.
The above embodiment solves the problem of large fluctuation of the liquid in the can body 100 during transportation, and the wave-preventing device in this example can effectively isolate external oxygen and can prevent the can body 100 from overturning and the electrolyte from leaking.
In some embodiments, the heat preservation device 300 includes a cylindrical supporting cover 301, a plurality of split heat preservation layers 302 are arranged inside the supporting cover 301, an avoidance channel 303 is arranged between two adjacent heat preservation layers 302, the supporting columns are located in the avoidance grooves, the supporting cover 301 is sleeved outside the tank body 100, the bottom of the supporting cover 301 is abutted to the catch hooks 102, the catch frame 203 is contacted with the upper end of the supporting cover 301, the heat preservation device 300 is fixed between the frame body 200 and the tank body 100, the heat preservation layers 302 can be fixedly connected to the supporting cover 301, and the heat preservation layers can be detached from the supporting cover 301 for replacement.
Specifically, the heat insulation layer 302 is an EPS polystyrene board, which is a thermoplastic material, and each cubic meter of volume contains 300-600 tens of thousands of independent closed bubbles, and the volume of air contained in the EPS polystyrene board is more than 98%, and the EPS polystyrene board is a material with very good heat insulation and heat preservation performance because the heat conductivity of the air is very small and the air is sealed in foam plastic and cannot be convected.
The heat preservation device 300 can be detached from the frame body 200, when the heat preservation device is detached, the bolts on the baffle frame 203 are removed, the whole baffle frame 203 can be removed from the upright posts 202, after the heat preservation device 300 is separated from the extrusion of the baffle frame 203, the heat preservation device 300 can be moved upwards, and the heat preservation device 300 is taken out from the upper end of the frame body 200 and is also operated when being placed.
The above embodiment solves the heat preservation problem during transportation of the tank body 100, and meanwhile, the connection mode of the supporting cover 301, the frame body 200 and the tank body 100 is simple and ingenious in design, so that the supporting cover 301 can be installed and detached at will, and storage and transportation are satisfied.
Referring to fig. 8, the apparatus of the present application is shown in use in a warehouse:
firstly, a plurality of frame bodies 200 are arranged in a line to be used as a first layer of frame bodies 200, and as the frame bodies 200 are square, every two frame bodies 200 can be clung together, and the avoiding openings 2012 on each frame body 200 are orderly arranged, so that the discharge pipelines 106 of a plurality of tank bodies 100 are ensured to be positioned in the same direction;
then, a second layer of frame bodies 200 are placed on each first layer of frame bodies 200, the bases 2013 on the second layer of frame bodies 200 are seated on the baffle frames 203 of the first layer of frame bodies 200, the main stress points on the first layer of frame bodies 200 are the upper ends of the upright posts 202, so that the stability of support is ensured, and the angle iron plates on the four upright posts 202 are respectively enclosed outside the bases 2013 to prevent the second layer of frame bodies 200 from sliding and shifting on the first layer of frame bodies 200.
After the arrangement of the one row of rack bodies 200, the second row of rack bodies 200 are repeatedly arranged to form a rectangular whole row, so that a plurality of rack bodies 200 can be orderly stacked in the warehouse, and the stacking layer number of the rack bodies 200 is 3 at most.
When stacking the warehouse, if the heat preservation device 300 is not needed, the supporting cover 301 can be detached from the frame body 200, and when the supporting cover 301 is taken out, the supporting cover 301 can be taken out from the frame body 200 only by detaching the baffle frame 203 on the frame body 200.
The device of the application is transported:
firstly, after the baffle frames 203 on the frame bodies 200 are opened, the support covers 301 are sleeved on the tank body 100 from top to bottom, when the support frames are downwards plugged, the avoidance channels 303 among the heat preservation layers 302 respectively correspond to the four support rods 101 on the tank body 100, so that the heat preservation layers 302 are tightly contacted with the outer wall of the tank body 100, the rotation of the support covers 301 is limited, the baffle frames 203 are fixedly connected to the upright posts 202 until the lower ends of the support covers 301 are abutted on the baffle hooks 102, and at the moment, the lower ends of the baffle frames 203 are extruded on the upper ends of the support covers 301, and the support covers 301 are fixedly connected between the frame bodies 200 and the tank body 100;
then, the frame body 200 carrying the heat preservation device 300 is loaded, and in the process of truck transportation, the liquid in the tank body 100 is severely fluctuated due to jolt of the vehicle, and the wave-preventing device 400 arranged on the tank body 100 can effectively prevent the liquid from fluctuating;
generally, the liquid in the can 100 is fully filled, the disc 402 is moved up to the limit position by rotating the handle 4012 during filling, and at this time, the lithium iron phosphate battery electrolyte in the can 100 is located below the disc 402 (a small amount of electrolyte is located above the disc 402 and does not greatly affect the fluctuation of the liquid);
the inert gas, generally nitrogen, is filled into the tank body 100 through the air inlet valve 104, and is positioned above the disc 402, namely, the upper space in the tank body 100, and the inert gas is matched with the disc 402, so that external air can be prevented from entering the tank body 100;
in the vehicle transportation process, when the disc 402 is always extruded on electrolyte, a plurality of trapezoidal plates 4022 under the disc 402 are inserted in the electrolyte, when the vehicle jolts, the electrolyte under the disc 402 always cannot generate large fluctuation, and meanwhile, under the cooperation of inert gas in the upper space in the tank body 100, the effect of preventing and controlling the fluctuation of the electrolyte in the tank body 100 can be achieved.
Secondly, if the lithium iron phosphate electrolyte is not completely filled in the tank 100 during transportation, that is, a large liquid flowing space exists in the tank 100 at this time, in order to prevent the electrolyte from generating large fluctuation, the handle 4012 needs to be manually rotated, the disc 402 is moved downwards until being extruded onto the elliptical floating ball 406, and finally the elliptical floating ball 406 seals the circular groove 403, at this time, the disc 402 compresses the lower space in the tank 100, the fluctuation control effect on the electrolyte is realized by reducing the movable space of the liquid, correspondingly, inert gas in the upper space needs to be increased, and the fluctuation and isolation effect of the electrolyte in the tank 100 are further prevented by the combined action of the disc 402, the trapezoid 4022, the elliptical floating ball 406 and the inert gas in the upper space, so that the stable transportation of the electrolyte of the lithium iron phosphate battery is ensured.
The device is convenient for assembling the tank body 100 and the heat preservation device 300, can meet the stacking of a plurality of tank bodies 100, and improves the warehouse utilization rate; no matter how small amount of lithium iron phosphate battery electrolyte is filled in the tank body 100, the electrolyte can be limited in a lower space with a small limit, and under the dividing action of the trapezoid plate 4022 on the liquid, the anti-fluctuation effect of the electrolyte is realized; under the plugging action of the elliptical floating ball 406, the automatic isolation of the lower space and the upper space is realized, and meanwhile, the inert gas filled in the upper space is matched, so that the electrolyte of the lithium iron phosphate battery in the tank body 100 is more stable, and the phenomenon that external oxygen enters and reacts with the electrolyte of the lithium iron phosphate battery is avoided; the heat preservation device 300 is connected with the frame body 200 and the tank body 100 in a matched mode, so that the heat preservation device 300 can be easily disassembled and assembled, and the use during storage and transportation is met.
Therefore, the electrolyte connection protection device for the lithium iron phosphate battery can effectively solve the problems that the electrolyte in the tank fluctuates when a plurality of units cannot be stacked and transported in the existing tank 100 and the connection structure does not have a heat preservation effect.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The electrolyte connection protection device for the lithium iron phosphate battery comprises a tank body for storing the electrolyte of the lithium iron phosphate battery, and is characterized in that a wave-proof device is arranged in the tank body;
the wave-proof device comprises a screw rod and a disc, wherein the outer wall of the disc is in sliding contact with the inner wall of the tank body, a circular groove penetrating through the disc is formed in the axis of the disc, a connecting frame is fixedly connected to the disc, a plurality of connecting rods in the connecting frame are fixedly connected with a threaded sleeve coaxial with the disc together, the screw rod is in threaded rotation connection with the threaded sleeve, the screw rod is inserted into the circular groove, an elliptical floating ball is connected to the screw rod in a sliding manner, the diameter of the circular groove is smaller than the long axis of the elliptical floating ball, and the circular groove is plugged when the elliptical floating ball floats upwards;
the screw rod is rotationally connected to the upper end of the tank body, the upper end of the screw rod penetrates through the tank body and is connected with a handle, a gap is reserved between the lower end of the screw rod and the bottom wall in the tank body, two guide rods are fixedly connected to the bottom wall in the tank body, and the guide rods penetrate through the disc to limit the rotation of the disc;
the inner part of the tank body is divided into an upper layer and a lower layer by the disc, the upper layer space is filled with inert gas, and the lower layer space contains electrolyte of the lithium iron phosphate battery;
the lower end of the disc is provided with a plurality of trapezoid plates uniformly distributed along the circumferential direction of the disc, and the trapezoid plates are perpendicular to the lower end face of the disc; the lower end of the disc is provided with a spring ring positioned at the notch, the buoyancy force on the elliptical floating ball acts on the spring ring, and the maximum elastic force of the spring ring is smaller than the buoyancy force of half elliptical floating ball immersed in the electrolyte of the lithium iron phosphate battery;
four support rods are fixedly connected to the lower end of the outer side of the tank body, and blocking hooks are fixedly connected to the outer sides of the support rods.
2. The electrolyte connection protection device for the lithium iron phosphate battery according to claim 1, wherein the lower end face of the disc is horizontal, the upper end face of the disc is provided with an inclined face, and the height of the inclined face in the direction from the outer edge of the disc to the axis decreases.
3. The electrolyte connection protection device for the lithium iron phosphate battery according to claim 1, wherein a sleeve penetrating through the elliptical floating ball is arranged on a short shaft of the elliptical floating ball, the screw is inserted into the sleeve, and a baffle is fixedly connected to the lower end of the screw through a screw.
4. The electrolyte connection protection device for the lithium iron phosphate battery according to claim 1, further comprising a frame body for connecting the tank body, wherein the frame body comprises a bottom frame, upright posts are fixedly connected to four corners of the upper end of the bottom frame respectively, and the upper ends of the four upright posts are detachably connected with a baffle frame.
5. The electrolyte connection protection device for a lithium iron phosphate battery according to claim 4, wherein the chassis comprises a frame composed of four cross beams, at least one cross beam is provided with an avoidance opening, the lower end of the frame is fixedly connected with a plurality of bases, the frame is fixedly connected with a plurality of first connecting rods which are staggered horizontally and longitudinally, the cross section area of the first connecting rods is smaller than that of the frame, four corners of the frame are fixedly connected with backing plates, and the lower ends of the supporting rods are fixedly connected to the backing plates.
6. The electrolyte connection protection device for the lithium iron phosphate battery according to claim 5, wherein the blocking frame comprises two vertical square frames, two outwards extending cross bars are arranged at the upper ends of the square frames, the two square frames are symmetrically arranged, two second connecting rods are fixedly connected to the two cross bars on the same side of the two square frames, the two second connecting rods are respectively arranged at two ends of the cross bars, the two square frames are fixedly connected into a whole, one outwards extending ends of the four cross bars respectively correspond to the upper ends of the four upright posts, the square frames are fixedly connected with the four upright posts through bolts, and angle iron plates are fixedly connected to the upper ends of the upright posts.
7. The electrolyte connection protection device for a lithium iron phosphate battery according to claim 4, further comprising a heat preservation device located between the tank body and the support body, wherein the heat preservation device comprises a cylindrical support cover, a plurality of split heat preservation layers are arranged inside the support cover, an avoidance channel is arranged between two adjacent heat preservation layers, the support columns are located in the avoidance channel, the support cover is sleeved outside the tank body, the bottom of the support cover is abutted to the catch, the catch contacts with the upper end of the support cover, and the heat preservation device is fixed between the support body and the tank body.
8. The electrolyte connection protection device for a lithium iron phosphate battery according to claim 1, wherein the wave-preventing device is made of polyethylene plastic or steel.
9. The electrolyte connection protection device for a lithium iron phosphate battery according to claim 1, wherein the heat preservation layer is EPS polystyrene board.
10. The electrolyte connection protection device for the lithium iron phosphate battery according to claim 5, wherein the upper end of the tank body is provided with a charging port, the upper end of the tank body is provided with an air inlet valve and a pressure relief valve, the lower end of the tank body is provided with a discharging pipeline, and the discharging pipeline extends out of the frame body through the avoidance port.
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| CN202311074915.2A CN116767709B (en) | 2023-08-25 | 2023-08-25 | Electrolyte connection protection device for lithium iron phosphate battery |
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|---|---|
| CN116767709B (en) | 2023-11-17 |
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