CN214754046U - Case cover for battery pack and battery pack thereof - Google Patents
Case cover for battery pack and battery pack thereof Download PDFInfo
- Publication number
- CN214754046U CN214754046U CN202121255094.9U CN202121255094U CN214754046U CN 214754046 U CN214754046 U CN 214754046U CN 202121255094 U CN202121255094 U CN 202121255094U CN 214754046 U CN214754046 U CN 214754046U
- Authority
- CN
- China
- Prior art keywords
- battery
- fire extinguishing
- cover
- box
- extinguishing device
- 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.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 claims description 3
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 claims description 3
- UAFOIVDGAVVKTE-UHFFFAOYSA-N 1,1,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-octadecafluoronon-1-ene Chemical compound FC(F)=C(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F UAFOIVDGAVVKTE-UHFFFAOYSA-N 0.000 claims description 3
- DRVMZMGCPWFDBI-UHFFFAOYSA-N 2,2,2-trifluoroethyl dihydrogen phosphate Chemical compound OP(O)(=O)OCC(F)(F)F DRVMZMGCPWFDBI-UHFFFAOYSA-N 0.000 claims description 3
- CBTAIOOTRCAMBD-UHFFFAOYSA-N 2-ethoxy-2,4,4,6,6-pentafluoro-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound CCOP1(F)=NP(F)(F)=NP(F)(F)=N1 CBTAIOOTRCAMBD-UHFFFAOYSA-N 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229920004449 Halon® Polymers 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- YOALFLHFSFEMLP-UHFFFAOYSA-N azane;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoic acid Chemical compound [NH4+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YOALFLHFSFEMLP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 claims description 3
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 claims description 3
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 229960004624 perflexane Drugs 0.000 claims description 3
- ZJIJAJXFLBMLCK-UHFFFAOYSA-N perfluorohexane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZJIJAJXFLBMLCK-UHFFFAOYSA-N 0.000 claims description 3
- 239000010702 perfluoropolyether Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000013638 trimer Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 description 12
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 230000002262 irrigation Effects 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000002000 Electrolyte additive Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a case lid and battery package for battery package. The battery pack comprises a battery box and a plurality of battery modules arranged in the battery box, and also comprises a box cover, wherein a fire extinguishing device is arranged on the inner surface of the box cover; the fire extinguishing device comprises a metal plate body, at least one cavity is arranged in the metal plate body, and fire extinguishing materials are arranged in the cavity. The top surface reinforcing plate is made of fireproof, high-temperature-resistant and impact-resistant plates, is arranged on the top surface of the heat shield and is used for reinforcing the impact resistance of the top surface of the heat shield. The utility model discloses a fire extinguishing apparatus at the case lid installation reduces/prevents the emergence possibility of battery thermal runaway.
Description
Technical Field
The utility model belongs to the technical field of power battery, a case lid for battery package and battery package thereof is related to.
Background
In order to obtain higher energy/power, a plurality of batteries are often connected to form a module/battery pack, in the current power battery, if the battery is abused or misused, explosion is likely to occur when gas, a large amount of heat or other substances are likely to be generated inside the battery, and in order to obtain high volume energy, the space between the plurality of batteries is relatively small, so that the abnormal battery is easy to cause peripheral chain reaction and even thermal runaway.
In order to solve the problem, a fire extinguishing tank filled with fire extinguishing agents is often additionally used in the industry, certain pressure is pre-installed in the fire extinguishing tank, the fire extinguishing tank is connected into a battery pack through a pipe, a closing valve is arranged on the pipeline, the closing valve is opened in time when a fire disaster happens, the fire extinguishing agents are injected into a battery box through the pressure in the fire extinguishing tank, the fire extinguishing/cooling purpose is achieved, and the disaster is prevented from further expanding. Compared with the traditional battery pack without a fire extinguishing device, the battery pack has certain fire extinguishing function, but the technology has the following defects:
(1) a pressure tank with certain pressure is required to be additionally equipped;
(2) the pressure tank needs to be measured and checked for safety at regular intervals;
(3) installing the pressure tank at an additional place;
(4) a plurality of accessory accessories such as valve bodies, conveying pipelines and sealing connecting pieces for entering and exiting the box body are needed;
(5) the triggering mode is not very reliable, the switch valve body is triggered by temperature induction/salt mist induction in the battery pack, and the failure risk is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the problem that will solve: the utility model discloses a setting of extinguishing device and the optimization to the battery package reduce/prevent that battery thermal runaway's emergence is probably.
In order to solve the above problem, the utility model discloses a scheme as follows:
according to the utility model discloses a case cover for a battery pack, a fire extinguishing device is arranged on the inner surface of the case cover; the fire extinguishing device comprises a metal plate body, at least one cavity is arranged in the metal plate body, and fire extinguishing materials are arranged in the cavity.
Further, according to the present invention, the fire extinguishing material comprises one or more of aerosol fire extinguishing agent, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, halon, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, or hydrofluorocarbon compound; wherein the hydrofluorohydrocarbon compound comprises R134A, R125, R32, R407C, R410A, R152.
Further, according to the case cover of the utility model, the metal plate body is made of pure aluminum or aluminum alloy material; and the outer surface of the metal plate body is processed into an insulator through insulation.
Further, according to the case cover of the utility model, a case cover reinforcing groove is arranged on the inner surface of the case cover; and a fixing mechanism is arranged between the fire extinguishing device and the box cover, and the fire extinguishing device is fixed on the box cover through the fixing mechanism and is positioned in the box cover reinforcing groove.
Further, according to the utility model discloses a case cover, the fixing mechanism includes a welding nut and a bolt; the plurality of welding nuts are welded in the box cover reinforcing groove, mounting wings are arranged on two sides of the fire extinguishing device, and a plurality of mounting holes are formed in the mounting wings; bolts are used to penetrate through the mounting holes to be connected with the welding nuts, so that the fire extinguishing device is fixed on the box cover.
Further, according to the utility model, the fixing mechanism comprises a welding nut, a blind rivet or a snap nail or a snap fastener and a hoop; the plurality of welding nuts are welded in the box cover reinforcing grooves, mounting wings are arranged on two sides of the fire extinguishing device, and a plurality of symmetrical clamp grooves are formed in the mounting wings; fixing holes are formed in two ends of the clamp; the clamp is used for abutting against the fire extinguishing device, two ends of the clamp are located in the two clamp grooves which are symmetrical to each other, and the blind rivet or the snap nail or the snap fastener penetrates through the fixing hole to be connected with the welding nut, so that the fire extinguishing device is fixed on the box cover.
A battery pack comprises a battery box and a plurality of battery modules arranged in the battery box; the battery box is characterized by further comprising a box cover, wherein the box cover is arranged on the battery box and located at the top of the battery module.
Further, according to the battery pack of the present invention, the battery module comprises a module frame and a plurality of batteries disposed in the module frame, and a battery safety valve is disposed at a top end of each battery; when the box cover is covered on the battery box, the fire extinguishing device is opposite to the battery safety valve.
Further, according to the battery pack of the present invention, the battery module further comprises a harness isolation plate disposed on the top of the battery; and a fire extinguishing hole is formed in the wire harness isolation plate and is positioned right above the battery safety valve.
Further, according to the battery pack of the present invention, the battery module further comprises a module upper cover disposed on the top of the wiring harness isolation plate; the module upper cover is a plastic thin cover, an avoiding groove is formed in the module upper cover, and when the box cover is arranged on the battery box, the fire extinguishing device on the box cover is arranged in the avoiding groove.
The technical effects of the utility model are as follows: the utility model discloses a fire extinguishing apparatus at the case lid installation reduces/prevents the emergence possibility of battery thermal runaway.
Drawings
Fig. 1 is a three-dimensional structure diagram of the battery pack of the present invention.
Fig. 2 is a transverse cross-sectional view of fig. 1.
Fig. 3 is an enlarged view of a broken-line frame portion of fig. 2.
Fig. 4 is an exploded view of the battery module according to the present invention.
Fig. 5 is a schematic structural diagram of a fire extinguishing apparatus according to a first embodiment of the present invention.
Fig. 6 is a schematic view of an installation structure of a fire extinguishing apparatus on a middle box cover according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a fire extinguishing apparatus according to a second embodiment of the present invention.
Fig. 8 is a schematic view of the installation structure of the fire extinguishing apparatus on the cover in the second embodiment of the present invention.
Wherein the content of the first and second substances,
1 is a battery box, 11 mounting plates,
2 is a battery module, 21 is a module frame, 22 is a battery, 221 is a battery safety valve, 23 is a harness isolation plate, 231 is a fire extinguishing hole, 24 is a module upper cover, 241 is an avoidance groove,
3 is a box cover, 31 is a box cover reinforcing groove,
4 is a fire extinguishing device, 41 is a metal plate body, 411 is a cavity, 412 is a fire extinguishing material, 42 is an installation wing, 421 is an installation hole, 422 is a clamp groove, 5 is a communication groove, 6 is an injection hole,
7 is a fixing mechanism, 71 is a welding nut, 72 is a bolt, 73 is a rivet, 74 is a clamp, 741 is a fixing hole.
Detailed Description
Example one
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2, and 3, a battery pack includes a battery case 1, a battery module 2 disposed in the battery case 1, and a case cover 3; the upper end open-ended chamber that holds is formed in battery box 1, and a plurality of battery module 2 sets up in this chamber that holds, closes the open end at battery box 1 through 3 lids of case lid, seals holding the chamber. Specifically, the battery module 2 includes a module frame 21, a battery 22 disposed in the module frame 21, a harness isolation plate 23 disposed on top of the battery 22, and a module upper cover 24 disposed on top of the harness isolation plate 23, as shown in fig. 4. The top end of the battery 22 is provided with a battery safety valve 221; the opening pressure of the battery safety valve 221 is set to be 0.02-1.00 MPa, and 0.6MPa is preferably set for opening. A plurality of batteries 22 are arranged in the module frame 21, a module upper cover 24 is arranged on the top of the batteries 22, and a wiring harness isolation plate 23 is arranged between the module upper cover 24 and the batteries 22; the harness isolation plate 23 is provided with a bus bar for connecting the battery 22 and a collecting circuit board for collecting the battery temperature and voltage. In order to facilitate the use of the battery safety valve 221, the harness isolation plate 23 is provided with a corresponding fire extinguishing hole 231; the module upper cover 24 is a plastic thin cover, and the thickness is 0.1-2.0 mm; in the embodiment, the battery box 1 is rectangular, the mounting plates 11 are arranged on two sides of the battery box, the mounting plates 11 are provided with a plurality of through holes, and the mounting plates 11 are used for mounting and fixing the battery box 1; the box cover 3 is made of metal materials, such as aluminum, stainless steel and common carbon steel (DC 01, DC02 and … …), preferably DC06, and the thickness is 0.5-2.0 mm; case lid 3 also is the rectangle, is provided with the installation edge all around, can set up the through-hole that bolt 72 fixed usefulness on the installation edge, also be provided with corresponding bearing installation platform on battery box 1 certainly to can be provided with the threaded connection hole on bearing the installation platform, use bolt 72 to pass through-hole connection threaded connection hole, can fix case lid 3 at the top of battery box 1, technical personnel in the art understand, can set up sealed the pad between case lid 3 and battery box 1, through the sealed sealing connection between the two that fills up the realization.
As shown in fig. 3, a fire extinguishing device 4 is provided on the inner surface of the case cover 3; the fire extinguishing apparatus 4 comprises a metal plate body 41, and the metal plate body 41 is made of pure aluminum or aluminum alloy material, preferably six series aluminum such as 6063 aluminum. At least one cavity 411 is provided in the metal plate body 41, and a fire extinguishing material 412 is provided in the cavity 411. When a plurality of cavities 411 are arranged in the metal plate body 41, the cavities 411 are internally communicated through a communication groove 5; see in particular fig. 5. In addition, the outer surface of the metal plate body 41 needs to be processed into an insulator by insulation. In this embodiment, when the case cover 3 is closed on the battery case 1, the fire extinguishing device 4 thereon is located on the upper portion of the module upper cover 24 of the battery module 2, facing each battery safety valve 221. When a certain battery 22 in a certain battery module 2 is abused or misused, the battery safety valve 221 of the battery 22 is flushed away by internal high-temperature substances (700-1000 ℃), and the high-temperature substances locally melt the metal plate body 41, so that the fire extinguishing material 412 packaged inside directly flows/is sprayed onto the battery 22 to directly extinguish the fire, thereby further reducing/preventing the possibility of thermal runaway. Since the high temperature material needs to pass through the module upper cover 24 first; those skilled in the art will appreciate that the module upper cover 24 may be provided with an opening structure for the pair of battery safety valves 221, and the time for the high-temperature substance to pass through the module upper cover 24 is reduced by the opening structure, thereby further increasing the fire extinguishing speed.
As shown in fig. 3 and 4, the module upper cover 24 is further provided with an avoiding groove 241, the avoiding groove 241 is used for avoiding the fire extinguishing device 4, and when the box cover 3 is covered on the battery box 1, the part of the fire extinguishing device 4 protruding out of the inner surface of the box cover 3 is located in the avoiding groove 241; therefore, the volume utilization rate of the battery pack is higher, and better volume energy density can be obtained.
Further, as shown in fig. 5, the metal plate 41 is provided with an injection hole 6, and the fire extinguishing material 412 is poured into the cavity 411 through the injection hole 6; when the filling of the fire extinguishing material 412 in the cavity 411 is completed, the filling hole 6 is sealed. The injection hole 6 may be sealed with a sealing nail or a sealing bead. When the sealing nails or the sealing beads are used for sealing, a welding mode can be adopted, or a bonding mode can be adopted, or a mode such as interference plugging can be adopted for sealing. In the embodiment, a sealing nail with a taper and an interference size of 0.02-1.00 mm is preferably adopted, after the surface of the sealing nail is coated with a sealing adhesive, the sealing nail is strongly plugged into the injection hole 6, and then the sealing nail is reinforced and sealed by laser welding or argon arc welding, that is, the embodiment adopts a mode of combining interference plugging, bonding and welding. Those skilled in the art will understand that the metal plate 41 may be provided with air vents, through which air is exhausted during the pouring process to increase the speed of pouring the fire extinguishing material 412; the hole is simultaneously sealed after the infusion is complete. The air exhaust holes can be arranged for convenient injection and irrigation, and the air exhaust is carried out through the air exhaust holes in the injection and irrigation process to improve the injection and irrigation speed; after the injection and irrigation are finished, both holes need to be sealed,
those skilled in the art will appreciate that a wide variety of fire extinguishing materials 412 may be selected in the above configuration. Specifically, the fire extinguishing material 412 is required to have flame retardant, heat insulation, and fire extinguishing effects after being released. Such as either a coolant, or an electrolyte additive with a fire-retardant fire-extinguishing effect additive, or a fire-extinguishing agent. Specifically, such fire extinguishing materials 412 include, but are not limited to, aerosol fire extinguishing agents, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, halon, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, or hydrofluorocarbon compounds. Such fire extinguishing material 412 may be a mixture of one or more of the above compounds. Among them, the hydrofluorocarbon compounds include, but are not limited to, R134A, R125, R32, R407C, R410A, R152, and the like.
As shown in fig. 3 and 6, in order to increase the strength of the case cover 3, a case cover reinforcing groove 31 is provided in the case cover 3; specifically, the cover reinforcing groove 31 is formed on the inner surface of the cover 3, i.e., an upwardly convex structure is formed on the outer surface of the cover 3. A fixing mechanism 7 is arranged between the fire extinguishing device 4 and the box cover 3, and the fire extinguishing device 4 is fixed on the box cover 3 through the fixing mechanism 7 and is positioned in the box cover reinforcing groove 31. With extinguishing device 4 setting in case lid reinforcing groove 31, avoid extinguishing device 4 protrusion case lid 3's part too high, further improve the volume utilization of battery package, can obtain better volume energy density. In this embodiment, four sets of battery modules 2 are installed in the battery box 1, each set includes six battery modules 2 arranged in the transverse direction, and the box cover 3 is provided with a plurality of box cover reinforcing grooves 31; a fire extinguishing device 4 is arranged in each box cover reinforcing groove 31; when the box cover 3 is installed, each fire extinguishing device 4 corresponds to two battery modules 2; those skilled in the art understand that three battery modules 2 may correspond to one fire extinguishing apparatus 4, or one fire extinguishing apparatus 4 may correspond to one battery module 2, and the length of the fire extinguishing apparatus 4 may be freely selected and designed.
Further, the fixing mechanism 7 includes a weld nut 71 and a bolt 72; a plurality of welding nuts 71 are welded in the box cover reinforcing groove 31, the fire extinguishing device 4 further comprises mounting wings 42, the mounting wings 42 are symmetrically arranged on two sides of the metal plate body 41, and a plurality of mounting holes 421 are arranged on the mounting wings 42; bolts 72 are used to pass through the mounting holes 421 and connect with the weld nuts 71 so that the fire extinguishing device 4 is fixed to the tank cover 3.
In addition, it should be noted that, the battery box 1, the module frame 21 of the battery module 2, the battery 22 in the module frame 21, the harness isolation board 23 provided with the bus bar and the collecting circuit board, and the module upper cover 24 are familiar to those skilled in the art and are not in the discussed scope of the present invention, and the description is omitted here for illustration.
Example two
As shown in fig. 7 and 8, the fixing mechanism 7 includes a weld nut 71, a pull rivet 73, and a clip 74, unlike the first embodiment; a plurality of welding nuts 71 are welded in the box cover reinforcing groove 31, and a plurality of symmetrical clamp grooves 422 are arranged on the mounting wing 42 of the fire extinguishing device 4; fixing holes 741 are formed at two ends of the clamp 74; the fire extinguishing device 4 is pressed by the clamp 74, so that two ends of the clamp 74 are positioned in two clamp grooves 422 which are symmetrical to each other, and the fire extinguishing device 4 is fixed on the box cover 3 by connecting the rivet 73 with the welding nut 71 through the fixing hole 741. Those skilled in the art will appreciate that the blind rivet 73 may also be a snap or stud.
Claims (10)
1. A case cover for a battery pack, characterized in that a fire extinguishing device is arranged on the inner surface of the case cover; the fire extinguishing device comprises a metal plate body, at least one cavity is arranged in the metal plate body, and fire extinguishing materials are arranged in the cavity.
2. The case lid according to claim 1, wherein the fire-extinguishing material comprises one or more of an aerosol fire-extinguishing agent, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, halon, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, or hydrofluorocarbon; wherein the hydrofluorohydrocarbon compound comprises R134A, R125, R32, R407C, R410A, R152.
3. The box cover according to claim 1, wherein the metal plate body is made of pure aluminum or aluminum alloy material; and the outer surface of the metal plate body is processed into an insulator through insulation.
4. The cover according to claim 1, wherein a cover reinforcement groove is provided on the cover; and a fixing mechanism is arranged between the fire extinguishing device and the box cover, and the fire extinguishing device is fixed on the box cover through the fixing mechanism and is positioned in the box cover reinforcing groove.
5. The case cover of claim 4, wherein the securing mechanism comprises a weld nut and a bolt; the plurality of welding nuts are welded in the box cover reinforcing groove, mounting wings are arranged on two sides of the fire extinguishing device, and a plurality of mounting holes are formed in the mounting wings; bolts are used to penetrate through the mounting holes to be connected with the welding nuts, so that the fire extinguishing device is fixed on the box cover.
6. A lid according to claim 4, wherein said fastening means comprise welded nuts, pop or snap nails or snaps and clips; the plurality of welding nuts are welded in the box cover reinforcing grooves, mounting wings are arranged on two sides of the fire extinguishing device, and a plurality of symmetrical clamp grooves are formed in the mounting wings; fixing holes are formed in two ends of the clamp; the clamp is used for abutting against the fire extinguishing device, two ends of the clamp are located in the two clamp grooves which are symmetrical to each other, and the blind rivet or the snap nail or the snap fastener penetrates through the fixing hole to be connected with the welding nut, so that the fire extinguishing device is fixed on the box cover.
7. A battery pack comprises a battery box and a plurality of battery modules arranged in the battery box; the battery pack is characterized by further comprising a box cover as claimed in any one of claims 1 to 6, wherein the box cover is mounted on the battery box and positioned on the top of the battery module.
8. The battery pack according to claim 7, wherein the battery module comprises a module frame and a plurality of batteries disposed in the module frame, the batteries having battery safety valves disposed at top ends thereof; when the box cover is covered on the battery box, the fire extinguishing device is opposite to the battery safety valve.
9. The battery pack according to claim 8, wherein the battery module further comprises a harness spacer provided on the top of the battery; and a fire extinguishing hole is formed in the wire harness isolation plate and is positioned right above the battery safety valve.
10. The battery pack according to claim 9, wherein the battery module further comprises a module upper cover disposed on top of the harness separator; the module upper cover is a plastic thin cover, an avoiding groove is formed in the module upper cover, and when the box cover is arranged on the battery box, the fire extinguishing device on the box cover is arranged in the avoiding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121255094.9U CN214754046U (en) | 2021-06-07 | 2021-06-07 | Case cover for battery pack and battery pack thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121255094.9U CN214754046U (en) | 2021-06-07 | 2021-06-07 | Case cover for battery pack and battery pack thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214754046U true CN214754046U (en) | 2021-11-16 |
Family
ID=78628342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121255094.9U Active CN214754046U (en) | 2021-06-07 | 2021-06-07 | Case cover for battery pack and battery pack thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214754046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115282544A (en) * | 2022-08-25 | 2022-11-04 | 嘉兴港区金安环保新材料有限公司 | Lithium battery fire extinguishing agent and lithium battery prepared by using same |
| CN115591159A (en) * | 2022-09-09 | 2023-01-13 | 西安电子科技大学芜湖研究院（Cn） | Fuse-type self-extinguishing battery box |
-
2021
- 2021-06-07 CN CN202121255094.9U patent/CN214754046U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115282544A (en) * | 2022-08-25 | 2022-11-04 | 嘉兴港区金安环保新材料有限公司 | Lithium battery fire extinguishing agent and lithium battery prepared by using same |
| CN115591159A (en) * | 2022-09-09 | 2023-01-13 | 西安电子科技大学芜湖研究院（Cn） | Fuse-type self-extinguishing battery box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214754046U (en) | Case cover for battery pack and battery pack thereof | |
| JP7065923B2 (en) | Energy storage device | |
| EA022170B1 (en) | Battery system for a vehicle with severable connections | |
| EA019433B1 (en) | Vehicle with battery system | |
| US20240154237A1 (en) | Structure for Preventing Battery Thermal Runaway, Battery Housing and Battery | |
| CN215955428U (en) | Module upper cover for battery module and battery module thereof | |
| US20140272479A1 (en) | Safety device for a lithium electrochemical generator battery | |
| CN112103444A (en) | Box, battery, electric equipment and battery manufacturing method | |
| CN215342762U (en) | Integrated module end plate that has extinguishing device and battery module thereof | |
| CN212033075U (en) | Lithium battery with charge explosion-proof function | |
| CN113782848A (en) | Vehicle power battery fire suppression device and method, power battery and vehicle | |
| CN214971366U (en) | Battery module and battery pack | |
| CN215989025U (en) | End plate for battery module and battery module | |
| JP2021111505A (en) | Battery case | |
| CN207558999U (en) | A kind of echelon with automatic fire extinguisher utilizes battery pack | |
| CN216958269U (en) | Battery box | |
| CN115566329A (en) | Directional exploding soft-packaged battery core, battery module and battery package that spout | |
| WO2022099662A1 (en) | Box body, battery, electric device, and manufacturing method for battery | |
| CN212323115U (en) | Soft packet of lithium cell group prevents delaying burning structure | |
| WO2022082397A1 (en) | Battery, electric apparatus, and method and device for preparing battery | |
| KR100770107B1 (en) | Center pin and Method of making the same and Lithium rechargeable battery using the same | |
| CN216319618U (en) | Fire extinguishing device fixing structure and battery pack thereof | |
| CN217589300U (en) | Explosion-proof device and battery pack | |
| CN105552253B (en) | The anti-explosion valve structure and its processing technology of a kind of lithium battery | |
| CN216928814U (en) | Battery pack and electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220121 Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zenergy Battery Technologies Co.,ltd Address before: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: Jiangsu Tafel Power System Co.,Ltd. |
|
| TR01 | Transfer of patent right |