CN207765501U - A kind of dynamic lithium battery fire prevention shell - Google Patents
A kind of dynamic lithium battery fire prevention shell Download PDFInfo
- Publication number
- CN207765501U CN207765501U CN201721894172.3U CN201721894172U CN207765501U CN 207765501 U CN207765501 U CN 207765501U CN 201721894172 U CN201721894172 U CN 201721894172U CN 207765501 U CN207765501 U CN 207765501U
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- China
- Prior art keywords
- shell
- fire
- battery
- fire prevention
- cover plate
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- 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.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
A kind of dynamic lithium battery fire prevention shell, including fire prevention shell and fireproof cover plate, the fire prevention shell includes the shell set gradually from outside to inside, cool down layer and battery mounting layer, the fireproof cover plate includes the circuit board mounting layer set gradually from top to bottom, aquifer and upper articulamentum, the fire prevention shell is equipped with air charging system, heat sink is equipped in the fire prevention shell and fireproof cover plate, it is provided with fire barrier between the mounting groove, the utility model filling with inert gas into battery mounting layer by air charging system, heat sink reduces the operating temperature of battery pack, reduce the probability of battery spontaneous combustion, when on fire, coolant liquid is flowed out from water outlet and water sprayering hole, it puts out a fire to battery；Fire barrier is set between battery modules, in cells burst, drives diaphragm body to be unfolded from shaft by mobile bar, prevents burning things which may cause a fire disaster diffusion from resulting in greater loss.
Description
Technical field
The utility model is related to lithium battery fireproofing technique field, specially a kind of dynamic lithium battery fire prevention shell.
Background technology
The features such as lithium ion battery is high, monomer voltage is high, service life is long by its energy storage density at present, by exhausted big portion
The favor of subsidiary factory quotient.But the problem that lithium ion battery also has it insufficient, that is, have the danger that spontaneous combustion occurs.Short circuit is excessively filled
The reasons such as electricity, repid discharge, mechanical failure can cause lithium ion battery sustained release to go out excessive heat energy, to occur certainly
Combustion.Lithium ion secondary power battery module is widely used in as electrical source of power on New-energy electric vehicle simultaneously, but is being occurred
When severe traffic accidents, powerful impact force is still there is a possibility that spontaneous combustion occurs for the battery pack in electric vehicle.
If China Patent Publication No. is a kind of fire prevention battery pack that " CN206388758U " is provided, including several monomers electricity
Between pond, upper fixing bracket, lower fixing bracket, shell and shell cover, the shell and upper fixing bracket, lower fixing bracket and battery
Gap, fill flame retarding material in the gap between battery and battery and the gap between shell cover and upper fixing bracket.
China Patent Publication No. is a kind of accumulator with fire-proof function that " CN203800094U " is provided again, including close
Envelope shell and the battery body being set in sealing shell, are provided with fire proofing material between the sealing shell and battery body and fill out
Fill chamber.Fire-proof plate is installed on the sealing shell inner surface, the fire proofing material filled cavity is set to the fire-proof plate and electricity
Between the ontology of pond.Dry powder fire extinguishing agent is filled in the fire proofing material filled cavity.
After lithium ion battery is by hard impacts, a large amount of thermal energy persistently generated are the reason of causing spontaneous combustion.Common is dry
Powder fire extinguisher and carbon dioxide extinguisher can only put out surface open fire, and the thermal energy of sustained release can make the multiple resume combustion of battery.It wants
Think thoroughly to put out a fire, must just absorb a large amount of thermal energy that lithium ion battery distributes, solve reason of fire, the specific heat capacity of water from the root cause
It is very high, good cooling effect can be played the role of, treating both manifestation and root cause of disease can be reached to lithium ion battery spontaneous combustion.
In the prior art, such as above-mentioned two application, fire proofing wood is set between battery and shell between battery and battery
Material either flame retarding material, does so the danger for reducing cells burst diffusion, but the thermal diffusivity of battery can be caused bad,
To cause cell damage or spontaneous combustion, the service life of battery is reduced, therefore the isolating and protecting between battery modules and module is arranged
It applies and only needs to enable when accident occurs.
Utility model content
The purpose of this utility model is to provide a kind of dynamic lithium battery fire prevention shells, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model provides the following technical solutions：
A kind of dynamic lithium battery fire prevention shell, including fire prevention shell and fireproof cover plate；
The fire prevention shell includes the shell set gradually from outside to inside, cool down layer and battery mounting layer, the shell
Outer surface is coated with fire resistant coating, and being stored in the cooling layer internal cavities has coolant liquid, the top of the shell and cooling layer
It is provided with lower articulamentum, the lower articulamentum surrounding is provided with sealing block, inside offers several lower diversion trenches, is led under described
Baffle is installed, the baffle is hollow structure, several mounting grooves are offered in the battery mounting layer above chute；
Fireproof cover plate setting is above fire prevention shell comprising the circuit board mounting layer that sets gradually from top to bottom,
Aquifer and upper articulamentum, are equipped with several circuit installing pipes in the aquifer, the circuit installing pipe through aquifer and
Upper articulamentum, the fireproof cover plate are connected with fire prevention shell by upper articulamentum, are offered in the upper articulamentum and lower water conservancy diversion
The identical upper diversion trench of slot number amount, size, is equipped with several sensors and catch basin thereon；
The fire prevention shell is equipped with the air charging system for the filling with inert gas into battery mounting layer；The fire prevention shell
With heat sink is equipped in fireproof cover plate, the heat sink includes water pump, and water pump setting is in cooling layer, output end
It is connected with water pipe, the water pipe passes through washing head and is connected with mounting blocks, is offered on the mounting blocks identical as water pipe diameter
Hole, the connector for connecting water pipe is additionally provided on hole, the mounting blocks are fastened on washing head, lower end and two liquid
The output end of cylinder pressure is connected, and multiple water sprayering holes are evenly distributed on the washing head；
Be provided with fire barrier between the mounting groove, the fire barrier include diaphragm body, drive motor, shaft and
Mobile bar, the drive motor output end are connected with shaft, and the diaphragm body is in shaft, and one end of which is fixed on shafts
On, the other end is fixed in mobile bar, and sliding slot is offered in the battery mounting layer, and the mobile bar is movably arranged on sliding slot
Interior, limit switches are installed on the top of mobile route.
Preferably, the reservoir bases are equidistant offers several water outlets, and the top of the water outlet, which is equipped with, to be stored
Water tank valve.
Preferably, the sensor uses temperature sensor and smoke sensor device.
Preferably, PCB circuit board is installed in the circuit board mounting layer, is electrically connected in the PCB circuit board disconnected
Way switch, several controllers and reserve battery, the controller include for controlling catch basin valve switch, for controlling water
Pump discharge and the valve positioner switched for hydraulic cylinder.
Preferably, the air charging system includes gas tube, and the gas tube both sides are connected with sliding block respectively, close to battery
One end of mounting layer is equipped with limited block, and the other end is equipped with port sealing block, is arranged with compressed spring, the compressed spring thereon
Both ends be separately fixed on sliding block and limited block.
Preferably, sealed cell case is installed in the mounting groove, several lithiums electricity is installed in the sealed cell case
Pond, it is in parallel between the lithium battery, it is in series or in parallel between the sealed cell case, set on the sealed cell case there are two
Connection jaws, the connection jaws are coated with marine glue with connecting position of wires, and the marine glue uses epoxyn.
Preferably, the fire resistant coating uses chlorinated rubber coating, and the fireproof cover plate and diaphragm body surface are coated with
Chlorinated rubber.
Compared with prior art, the utility model has the beneficial effects that：
The setting of the case surface fire resistant coating of the utility model is prevented causes battery case because of the burning in the external world
Burning；By air charging system, into battery mounting layer, the setting of filling with inert gas, diluent air, while heat sink makes cooling
Liquid circulates between fire prevention shell and fireproof cover plate, reduces temperature, while also playing the effect of fluid-tight, reduces battery
The probability of spontaneous combustion；When on fire, catch basin valve is opened, the coolant liquid in catch basin is flowed out from water outlet, while mounting blocks
Washing head is left under the thrust of hydraulic cylinder, coolant liquid is spilt under the action of water pump by water sprayering hole at this time, the ratio of coolant liquid
Thermal capacitance is larger, absorbs heat and cools down rapidly, puts out a fire to battery；Fire barrier is set between battery modules, is fired in battery
When burning, drives diaphragm body to be unfolded from shaft by mobile bar, to which battery modules be isolated, can have by simply operating
Battery modules are separated to effect, prevent burning things which may cause a fire disaster diffusion from resulting in greater loss.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the fire prevention shell structure front view of the utility model；
Fig. 3 is the fire prevention shell structure vertical view of the utility model；
Fig. 4 is the fireproof cover plate structure front view of the utility model；
Fig. 5 is the fireproof cover plate structure upward view of the utility model；
Fig. 6 is the air charging system structural schematic diagram of the utility model；
Fig. 7 is the sealed cell box structure schematic diagram of the utility model；
Fig. 8 is the fire barrier structural schematic diagram of the utility model.
In figure：It is 1 fire prevention shell, 11 shells, 12 cooling layers, 13 battery mounting layers, 131 mounting grooves, 14 fire resistant coatings, 15 close
Seal block, 16 times articulamentums, 17 baffles, 18 times diversion trenches, 2 fireproof cover plates, 21 circuit board mounting layers, 22 aquifers, 221 circuits
Installing pipe, articulamentum on 23, diversion trench, 24 sensors, 25 catch basins, 251 water outlets, 252 catch basin valves, 3 inflations on 231
Device, 31 gas tubes, 32 compressed springs, 33 sliding blocks, 34 limited blocks, 35 port sealing blocks, 4 heat sinks, 41 water pumps, 42 water
Pipe, 43 washing heads, 431 water sprayering holes, 44 mounting blocks, 441 connectors, 442 hydraulic cylinders, 5PCB wiring boards, 51 disconnect switchs, 52 controls
Device processed, 6 sealed cell casees, 61 connection jaws, 62 marine glues, 7 fire barriers, 71 diaphragm bodies, 72 drive motors, 73 shafts, 74
Mobile bar, 75 sliding slots and 76 limit switches.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
~8 are please referred to Fig.1, the utility model provides a kind of technical solution：
A kind of dynamic lithium battery fire prevention shell, including fire prevention shell 1 and fireproof cover plate 2.
The fire prevention shell 1 includes the shell 11 set gradually from outside to inside, cool down layer 12 and battery mounting layer 13, described
The outer surface of shell 11 is coated with fire resistant coating 14, and in the present embodiment, fire resistant coating 14 uses chlorinated rubber coating, the cooling
Storage has coolant liquid in 12 internal cavities of layer, and the shell 11 and the top of cooling layer 12 are provided with lower articulamentum 16, under described
16 surrounding of articulamentum is provided with sealing block 15, inside offers several lower diversion trenches 18, and the setting of sealing block 15 strengthens anti-
Air-tightness inside fiery shell 1,18 top of the lower diversion trench are equipped with baffle 17, and the baffle 17 is hollow structure,
Several mounting grooves 131 are offered in the battery mounting layer 13, and fire barrier 7 is provided between the mounting groove 131.
The fireproof cover plate 2 includes circuit board mounting layer 21, aquifer 22 and the upper articulamentum set gradually from top to bottom
23,2 outer surface of fireproof cover plate is coated with chlorinated rubber, several circuit installing pipes 221, the line are equipped in the aquifer 22
Road installing pipe 221 runs through aquifer 22 and upper articulamentum 23, and the fireproof cover plate 2 passes through upper articulamentum 23 and fire prevention 1 phase of shell
Even, upper diversion trench 231 identical with lower 18 quantity of diversion trench, size is offered in the upper articulamentum 23, if being equipped with thereon
Dry sensor 24 and catch basin 25, sensor 24 use temperature sensor and smoke sensor device, immediately monitoring battery mounting layer
Temperature in 13 and whether there is or not combustion cases.25 bottom of catch basin is equidistant to offer several water outlets 251, the water outlet
251 top is equipped with catch basin valve 252.
Fire prevention shell 1 is installed together by lower articulamentum 16 and the upper articulamentum 23 of fireproof cover plate 2,1 He of shell of preventing fires
Heat sink 4 is equipped in fireproof cover plate 2, the heat sink 4 includes water pump 41, and the water pump 41 is arranged in cooling layer 12,
Its output end is connected with water pipe 42, and the water pipe 42 passes through washing head 43 and is connected with mounting blocks 44, is opened on the mounting blocks 44
Equipped with hole identical with 42 diameter of water pipe, the connector 441 for connecting water pipe is additionally provided on hole, the mounting blocks 44 engage
On washing head 43, lower end is connected with the output end of two hydraulic cylinders 442, and multiple spill is evenly distributed on the washing head 43
Water hole 431.
Baffle 17 is mounted in upper diversion trench 231, and baffle 17, lower diversion trench 18 and the formation of upper diversion trench 231 pass through,
Coolant liquid is in aquifer 22, upper diversion trench 231, baffle 17, lower diversion trench 18 and cooling layer 12 under the driving of water pump 41
Circulation loop is formed, while battery cools down in for battery mounting layer 13, also to fire prevention shell 1 and 2 junction of fireproof cover plate
Play the role of fluid-tight, ensure that the leakproofness inside fire prevention shell 1 and fireproof cover plate 2.
The fire prevention shell 1 is equipped with air charging system 3.The air charging system 3 includes gas tube 31,31 liang of the gas tube
Side is connected with sliding block 33 respectively, is equipped with limited block 34 close to one end of battery mounting layer 13, the other end is equipped with port sealing
Block 35, gas tube 31 are connected through a screw thread with port sealing block 35, and compressed spring 32, the compression bullet are arranged on gas tube 31
The both ends of spring 32 are separately fixed on sliding block 33 and limited block 34.Port sealing block 35 is opened, is filled into battery mounting layer 13 lazy
Property gas, dilute internal air, reduce the content of oxygen, prevent battery because high temperature is natural.
PCB circuit board 5 is installed, being electrically connected with open circuit in the PCB circuit board 5 opens in the circuit board mounting layer 21
51, several controllers 52 and reserve battery are closed, the controller 52 includes for controlling the switch of catch basin valve 252, being used for
The valve positioner for controlling 41 flow of water pump and being switched for hydraulic cylinder 442.Sealed cell is installed in the mounting groove 131
Case 6, is equipped with several lithium batteries in the sealed cell case 6, in parallel between the lithium battery, the sealed cell case 6 it
Between it is in series or in parallel, set on the sealed cell case 6 there are two connection jaws 61, the connection jaws 61 are coated with connecting position of wires
There are marine glue 62, the marine glue 62 to use epoxyn, the good heat dissipation effect of epoxyn that can protect
While demonstrate,proving water proofing property, the heat that sealed cell case 6 generates can be shed faster.
When on fire, the current supply circuit of sealed cell case 6 is disconnected by disconnect switch 51, while starting reserve battery, is led to
It crosses controller 52 and opens catch basin valve 252, the coolant liquid in catch basin 25 is flowed out from water outlet 251, while mounting blocks 44
Washing head 43 is left under the thrust of hydraulic cylinder 442, coolant liquid is spilt under the action of water pump 41 by water sprayering hole 431 at this time,
The specific heat capacity of coolant liquid is larger, absorbs heat and cools down rapidly, puts out a fire to battery.In addition the setting of fire barrier 7 separates
Sealed cell case 6, it is therefore prevented that fire spreading can individually open catch basin valve 252 or washing head 43 is put out a fire.
The fire barrier 7 includes diaphragm body 71, drive motor 72, shaft 73 and mobile bar 74,71 table of diaphragm body
Face is coated with chlorinated rubber, and 72 output end of the drive motor is connected with shaft 73, and the diaphragm body 71 is wound on shaft 73
On, one end of which is fixed in shaft 73, the other end is fixed in mobile bar 74, and sliding slot is offered in the battery mounting layer 13
75, the mobile bar 74 is movably arranged in sliding slot 75, and limit switches 76 are installed on the top of mobile route.Battery mounting layer
When cells burst occurring in 13, start drive motor 72, the rotation of drive motor 72 drives shaft 73 to rotate, to make diaphragm body
71 are unfolded from shaft 73, and are moved to the top of sliding slot 75 along sliding slot 75 under the drive of mobile bar 74, touch limit
Stop movement after switch 76, diaphragm body 71 is isolated battery pack after being unfolded, battery can be effectively separated by simply operating
Group prevents burning things which may cause a fire disaster diffusion from resulting in greater loss.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (7)
- The shell 1. a kind of dynamic lithium battery is prevented fires, including fire prevention shell (1) and fireproof cover plate (2), it is characterised in that：The fire prevention shell (1) includes the shell (11) set gradually from outside to inside, cool down layer (12) and battery mounting layer (13), The outer surface of the shell (11) is coated with fire resistant coating (14), and being stored in cooling layer (12) internal cavities has coolant liquid, It is provided with lower articulamentum (16) above the shell (11) and cooling layer (12), lower articulamentum (16) surrounding is provided with close Block (15) is sealed, several lower diversion trenches (18) is inside offered, baffle (17) is installed above the lower diversion trench (18), institute It is hollow structure to state baffle (17), several mounting grooves (131) are offered in the battery mounting layer (13)；Fireproof cover plate (2) setting is above fire prevention shell (1) comprising the circuit board mounting layer set gradually from top to bottom (21), aquifer (22) and upper articulamentum (23), the aquifer (22) is interior equipped with several circuit installing pipes (221), described Circuit installing pipe (221) runs through aquifer (22) and upper articulamentum (23), the fireproof cover plate (2) by upper articulamentum (23) and Shell (1) of preventing fires is connected, and upper diversion trench identical with lower diversion trench (18) quantity, size is offered in the upper articulamentum (23) (231), several sensors (24) and catch basin (25) are installed thereon；The fire prevention shell (1) is equipped with for the air charging system (3) to battery mounting layer (13) interior filling with inert gas；It is described anti- Heat sink (4) is equipped in fiery shell (1) and fireproof cover plate (2), the heat sink (4) includes water pump (41), the water pump (41) in cooling layer (12), output end is connected with water pipe (42) for setting, the water pipe (42) across washing head (43) and with Mounting blocks (44) are connected, and hole identical with water pipe (42) diameter is offered on the mounting blocks (44), is additionally provided with and is used on hole The connector (441) of water pipe is connected, the mounting blocks (44) are fastened on washing head (43), lower end and two hydraulic cylinders (442) output end is connected, and multiple water sprayering holes (431) are evenly distributed on the washing head (43)；Fire barrier (7) is provided between the mounting groove (131), the fire barrier (7) includes diaphragm body (71), driving Motor (72), shaft (73) and mobile bar (74), drive motor (72) output end are connected with shaft (73), the partition board master Body (71) is in shaft (73), and one end of which is fixed in shaft (73), the other end is fixed in mobile bar (74), the electricity Sliding slot (75) is offered in pond mounting layer (13), the mobile bar (74) is movably arranged in sliding slot (75), mobile route Top is installed by limit switches (76).
- The shell 2. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：Catch basin (25) bottom Equidistant to offer several water outlets (251), the top of the water outlet (251) is equipped with catch basin valve (252).
- The shell 3. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：The sensor (24) uses Temperature sensor and smoke sensor device.
- The shell 4. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：The circuit board mounting layer (21) PCB circuit board (5) is installed in, disconnect switch (51), several controls are electrically connected on the PCB circuit board (5) Device (52) and reserve battery, the controller (52) include for controlling catch basin valve (252) switch, for controlling water pump (41) flow and the valve positioner for hydraulic cylinder (442) switch.
- The shell 5. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：Air charging system (3) packet Gas tube (31) is included, gas tube (31) both sides are connected with sliding block (33) respectively, one end close to battery mounting layer (13) Equipped with limited block (34), the other end is equipped with port sealing block (35), is arranged with compressed spring (32), the compressed spring thereon (32) both ends are separately fixed on sliding block (33) and limited block (34).
- The shell 6. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：In the mounting groove (131) Sealed cell case (6) is installed, several lithium batteries are installed in the sealed cell case (6), it is in parallel between the lithium battery, It is in series or in parallel between the sealed cell case (6), it is set on the sealed cell case (6) there are two connection jaws (61), it is described Connection jaws (61) are coated with marine glue (62) with connecting position of wires, and the marine glue (62) uses epoxyn.
- The shell 7. a kind of dynamic lithium battery according to claim 1 is prevented fires, it is characterised in that：The fire resistant coating (14) is adopted With chlorinated rubber coating, the fireproof cover plate (2) and diaphragm body (71) surface are coated with chlorinated rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721894172.3U CN207765501U (en) | 2017-12-29 | 2017-12-29 | A kind of dynamic lithium battery fire prevention shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721894172.3U CN207765501U (en) | 2017-12-29 | 2017-12-29 | A kind of dynamic lithium battery fire prevention shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765501U true CN207765501U (en) | 2018-08-24 |
Family
ID=63185917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721894172.3U Expired - Fee Related CN207765501U (en) | 2017-12-29 | 2017-12-29 | A kind of dynamic lithium battery fire prevention shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207765501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI690350B (en) * | 2018-10-01 | 2020-04-11 | 協同能源科技股份有限公司 | System and method for battery fire extinguishing through flooding the battery |
| CN112054387A (en) * | 2019-06-05 | 2020-12-08 | 二工防爆科技股份有限公司 | High-efficient heat dissipation fire prevention explosion-proof cabinet |
-
2017
- 2017-12-29 CN CN201721894172.3U patent/CN207765501U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI690350B (en) * | 2018-10-01 | 2020-04-11 | 協同能源科技股份有限公司 | System and method for battery fire extinguishing through flooding the battery |
| CN112054387A (en) * | 2019-06-05 | 2020-12-08 | 二工防爆科技股份有限公司 | High-efficient heat dissipation fire prevention explosion-proof cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20201229 |