CN108721808A - Fire extinguishing box and extinguishing method - Google Patents
Fire extinguishing box and extinguishing method Download PDFInfo
- Publication number
- CN108721808A CN108721808A CN201810879007.3A CN201810879007A CN108721808A CN 108721808 A CN108721808 A CN 108721808A CN 201810879007 A CN201810879007 A CN 201810879007A CN 108721808 A CN108721808 A CN 108721808A
- Authority
- CN
- China
- Prior art keywords
- extinguishing
- box body
- lower layer
- layer box
- fire
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention is in relation to a kind of fire extinguishing box, including upper layer box body and lower layer box body, partition board is set between upper layer box body and lower layer box body, upper layer box body fills extinguishing fluid, multiple liquid outlets are provided on partition board, it is mounted on switch at each liquid outlet, the side of the partition board towards the lower layer box body is provided with multiple sensors, the sensor waits for whether extinguishing device burns for detecting, and transmit a signal to control device, lower layer's bottom of box opens wide, lower layer's wall box is provided with pressure relief opening, the lower layer box body, which is positioned over, to be waited at the top of extinguishing device, the lower layer box body forms confined space with extinguishing device top is waited for；Control device is electrically connected with the sensor, switch, and the control device is opened or closed according to the signal of the sensor transmissions control switch.Fire extinguishing box of the present invention, fire-fighting efficiency is high, water use efficiency is high, and fire extinguishing procedure is safer.
Description
Technical field
The present invention relates to a kind of extinguishing devices, more particularly to a kind of fire extinguishing box.
Background technology
There are following features when lithium ion battery ignition：Burning is fierce, generates high temperature and pressure, is difficult to control, detonation,
Explosion happens occasionally；Firing duration is long；There is trickling fire；A large amount of dense smoke and dust are generated, has subsequent explosion dangerous；Production
Object is complicated, quantitative analysis difficult；Precipitated oxygen when burning, in battery pack internal-response, not needing extraneous oxygen supply can continue to fire
It burns, isolation method and smother play fire extinguishing failure.
Currently, generally believe that using a large amount of water be the most effectual way of lithium-ion electric Pool fire of going out, but water how into
Enter to become inside battery pack a problem.If using automatic water sprinkler systme, accurately and efficiently a large amount of water injections cannot be arrived
At hole, a large amount of dense smoke and dust can only rely on smoke exhaust fan exclusion, and fire-fighting efficiency is also very low.According to the side of manual extinguishing
Formula can accurately spray to the water in hydraulic giant at flame, but find that battery burns battery pack case in Security Officer
It wears, gets started connection water band, set up hydraulic giant, go out above-water method, sprayed water burning to Security Officer since battery pack case
In time, battery can eject the flame and a large amount of dense smokes and dust of excessive temperature, jeopardize security official's inherently safe.Meanwhile by
Smaller in burning hole, the cells burst duration can be long, and only very least a portion of water can enter battery from the hole of burn-through
The effect of cooling battery and diluting reaction object is packaged, a large amount of water can cause water damage, all be electrically to set especially around
Under standby environment, water damage meeting bigger, and the utilization rate of water is very low.
Invention content
It is an object of the present invention to overcome the problems, such as existing lithium ion battery extinguishing device, and provide a kind of fire extinguishing box
And extinguishing method, the technical problem to be solved is that improving, existing extinguishing device fire-fighting efficiency is low, water use efficiency is low, fire extinguishing procedure
Operating personnel's security problems are endangered, fire-fighting efficiency is improved, improves water use efficiency, and fire extinguishing procedure is safer.
The object of the invention to solve the technical problems is realized using technical solution below.It carries according to the present invention
The fire extinguishing box gone out, including
Partition board is arranged between the upper layer box body and lower layer box body in upper layer box body and lower layer box body,
The upper layer box body fills extinguishing fluid,
It is provided with multiple liquid outlets on the partition board, is mounted on switch at each liquid outlet, the partition board is towards institute
The side for stating lower layer box body is provided with multiple sensors, and the sensor waits for whether extinguishing device burns for detecting, and will letter
Number it is transmitted to control device,
Lower layer's bottom of box opens wide, and lower layer's wall box is provided with pressure relief opening, and the lower layer box body, which is positioned over, to be waited for
At the top of extinguishing device, the lower layer box body forms confined space with extinguishing device top is waited for,
Control device is electrically connected with the sensor, switch, and the control device is according to the signals of the sensor transmissions
The switch is controlled to open or close.
Fire extinguishing box above-mentioned, wherein the switch is solenoid valve.
Fire extinguishing box above-mentioned, wherein the sensor is temperature sensor or smoke sensor device.
Fire extinguishing box above-mentioned, wherein the bottom of lower layer's wall box is used to and waits for be fixed to each other at the top of extinguishing device,
The sealing strip that the bottom setting of lower layer's wall box is used to and waits for seal against each other at the top of extinguishing device.
Fire extinguishing box above-mentioned, wherein the base area of lower layer's babinet is less than or equal to the top surface for waiting for extinguishing device
Crimping is arranged in area, lower layer's wall box bottom, and the sealing strip is set at each crimping.
Fire extinguishing box above-mentioned, wherein described wait for carrying connecting pin, the base area of the lower layer box body at the top of extinguishing device
More than the top surface area of the connecting pin, for being sleeved on the connecting pin, each sealing strip is set lower layer's bottom of box
It is placed in each sidewall bottom of lower layer box body.
Fire extinguishing box above-mentioned, wherein the pressure relief opening is located at the lower layer box body either side wall close to the position of the partition board
It sets.
Fire extinguishing box above-mentioned, wherein described wait for that extinguishing device is battery pack.
A kind of extinguishing method of the present invention, includes the following steps：
After extinguishing device is on fire, wait for being burnt at the top of extinguishing device,
It detects and transmits the signal to control device after the signal that extinguishing device side wall is burnt,
Switch under control device control at fire extinguishing separator for container upper liquid outlet is opened, and the extinguishing fluid is from fire extinguishing
Layer box body flows into lower layer box body on case, then enters through the hole after the burn-through of extinguishing device side wall and wait in extinguishing device.
Extinguishing method above-mentioned, wherein the extinguishing fluid is water.
Extinguishing method above-mentioned, wherein after extinguishing device is on fire, the pressure relief opening for waiting for extinguishing device sprays dense smoke, quilt
After smoke sensor device is known, smoke exhaust fan starts.
Extinguishing method above-mentioned, wherein described wait for that extinguishing device is battery pack.
By above-mentioned technical proposal, the present invention at least has following advantages and advantageous effect：
(1) fire extinguishing box of the present invention, due to including upper layer box body and lower layer box body, upper layer box body is equipped with extinguishing fluid, partition board
On sensor is installed, be provided with pressure relief opening on lower layer box body, when battery pack is burnt, battery pack combined with fire extinguishing box, upper layer
Extinguishing fluid in babinet enters lower layer box body, and the hole burnt through battery pack flows into battery pack, directly cooling battery,
Direct diluting reaction object, water use efficiency is high, fire-fighting efficiency is high, and can find fire behavior, battery pack at the battery pack initial stage of catching fire
The nuisance generated that burns is less, to the safe fanout free region of the life of operating personnel in fire extinguishing procedure, meanwhile, can multiple battery packs it is total
With a fire extinguishing box, cost is reduced.
Description of the drawings
Fig. 1 is the separate structure schematic diagram of fire extinguishing box of the present invention；
Fig. 2 is the overall structure diagram of fire extinguishing box of the present invention；
Fig. 3 is the using state structure diagram of fire extinguishing box of the present invention.
【Symbol description】
10：Upper layer box body 20：Lower layer box body
30：Partition board 21：Pressure relief opening
31：Liquid outlet 22：Crimping
32：Sensor 40：Battery pack
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
The specific implementation mode, feature and its effect of the fire extinguishing box proposed according to the present invention is described in detail in attached drawing and preferred embodiment
As after.
It please refers to Fig.1, Fig. 2, Fig. 3, a kind of fire extinguishing box of the present invention, including upper layer box body 10, lower layer box body 20 and control dress
It sets, partition board 30 is set between upper layer box body 10 and lower layer box body 20, upper layer box body 10 fills extinguishing fluid, is provided on partition board 30 more
A liquid outlet 31 is mounted on switch at each liquid outlet, and the side of partition board 30 towards lower layer box body 20 is provided with one or more
Sensor 32, sensor 32 transmit a signal to control device for detecting whether battery pack burns, lower 20 bottom of layer box body
It opens wide, lower 20 side wall of layer box body is provided with pressure relief opening 21, and lower layer box body 20, which is positioned over, to be waited at the top of extinguishing device, to wait for that extinguishing device is
For vehicle battery, when fire extinguishing box is positioned over 40 top of battery, lower layer box body 20 forms confined space with 40 top of battery,
Control device is electrically connected with each sensor 32 and each switch, and control device is opened according to the Signal-controlled switch that sensor 32 transmits
Or it closes.Specifically, be welded to each other between partition board 30 and upper layer box body 10, lower layer box body 20, alternatively, partition board 30 can also be with
Upper layer box body 10, lower layer box body 20 are integrally formed or are fixed to each other by other means.Sensor 32 can be used temperature sensor,
Smoke sensor device or other can perceive the whether ablaze sensor of battery.Switch uses solenoid valve, alternatively, switch is also
Other valves that can be controlled by control device can be used.Extinguishing fluid selects water, alternatively, other extinguishing effects also can be used
Better extinguishing fluid.
When cells burst in electrical changing station or warehouse, battery pressure relief opening can spray a certain amount of dense smoke, by electrical changing station or storehouse
Smoke sensor device in library close to battery pressure relief opening knows that smoke exhaust fan starts.Battery pack and fire extinguishing box of the present invention are close at this time
In conjunction with after battery pack, which is burnt, burns upper surface, heat, electrolyte, reaction product all can be spouting from the hole of burn-through.Every
The sensor of 30 bottom of plate transmits a signal to control device after detecting above-mentioned signal, at control device control lower liquid outlet
Switch open, the extinguishing fluid in fire extinguishing box in layer box body flows into lower layer box body from liquid outlet.Extinguishing fluid is in lower layer box body
Accumulation, due to battery pack burning by the outside spray combustion product of hole that burns and when a small amount of reactant not substantially uniformity,
Constant pressure is sprayed, so extinguishing fluid exits into battery pack through pressure relief opening, dilutes cooling combustion reaction, reaction rate is made rapidly to drop
It is low, until reaction terminating.It is put out a fire using fire extinguishing box of the present invention, fire extinguishing is rapid timely, will not spread, and will not eject a large amount of
Dense smoke, without heat radiation, without water damage, can share a fire extinguishing box with multiple battery packs completely, work as battery without open fire
When fire behavior barrier occurs in packet, battery pack is combined with fire extinguishing box according to facility in specific warehouse.Fire extinguishing box is combined with battery pack
Mode：Conducted oneself with dignity using fire extinguishing box, if single battery pack, fire extinguishing box can be positioned on battery pack.If battery pack is more
It is a, fire extinguishing box can be fixed, it will be in conjunction below battery pack liter act to fire extinguishing box using specific facilities.
In one embodiment, the bottom of lower 20 side wall of layer box body is used to and waits for be fixed to each other at the top of extinguishing device, lower layer
The sealing strip that the bottom setting of 20 each side wall of babinet is used to and waits for seal against each other at the top of extinguishing device.When fire extinguishing box is positioned over battery
When packet top, sealed against each other between the bottom of 20 each side wall of lower layer box body and battery pack top.
In one embodiment, the base area of lower layer box body 20 is less than the top surface area for waiting for extinguishing device, lower layer box body
Crimping 22 is arranged in 20 each sidewall bottoms, and each sealing strip is respectively arranged at each crimping 22.
In one embodiment, it waits for carrying connecting pin at the top of extinguishing device, the base area of lower layer box body 20 is more than connection
The top surface area at end, lower 20 bottom of layer box body are useful for and connect for being sleeved on connecting pin, 20 each sidewall bottom band of lower layer box body
Connect the sealing strip that end seals against each other.When fire extinguishing box is positioned at the top of battery pack, the bottom of 20 each side wall of lower layer box body and connection
It is sealed against each other between end.
In one embodiment, pressure relief opening 21 is set on 20 any side wall of lower layer box body close to the position of partition board 30.
The invention further relates to a kind of extinguishing methods, include the following steps：
After extinguishing device is on fire, wait for being burnt at the top of extinguishing device,
By the signal transmission to control device after detecting the signal burnt at the top of the extinguishing device,
The switch at liquid outlet under control device control on fire extinguishing separator for container is opened, and extinguishing fluid is from fire extinguishing box upper layer
Babinet flows into lower layer box body, then enters through the hole after the burn-through of extinguishing device side wall and wait in extinguishing device, until fire extinguishes.
In one embodiment, it after extinguishing device is on fire, waits for that the pressure relief opening of extinguishing device sprays dense smoke, is sensed by smog
After device is known, smoke exhaust fan starts.
In one embodiment, wait for that extinguishing device is battery pack.
Specifically, above-mentioned extinguishing fluid uses water or other good extinguishing effects, cheap extinguishing fluid.
The above described is only a preferred embodiment of the present invention, limitation in any form not is done to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention
Any simple modification, equivalent change and modification made to the above embodiment, in the range of still falling within technical solution of the present invention.
Claims (16)
1. a kind of fire extinguishing box, it is characterised in that：Including
Partition board is arranged between the upper layer box body (10) and lower layer box body (20) in upper layer box body (10) and lower layer box body (20)
(30),
The upper layer box body (10) fills extinguishing fluid,
It is provided with multiple liquid outlets on the partition board (30), switch is mounted at each liquid outlet,
Lower layer box body (20) bottom-open, the lower layer box body (20), which is positioned over, waits at the top of extinguishing device, lower layer's case
Body (20) forms confined space with extinguishing device top is waited for.
2. fire extinguishing box according to claim 1, it is characterised in that：Lower layer box body (20) side wall is provided with pressure relief opening
(21)。
3. fire extinguishing box according to claim 1, it is characterised in that：The partition board (30) is towards the lower layer box body (20)
Side is provided with one or more sensors, and the sensor waits for whether extinguishing device burns for detecting, and by signal transmission
To control device, the control device is electrically connected with the sensor, switch, and the control device is passed according to the sensor
The defeated signal control switch opens or closes.
4. fire extinguishing box according to claim 1, it is characterised in that：The switch is solenoid valve.
5. fire extinguishing box according to claim 1, it is characterised in that：The extinguishing fluid is water.
6. fire extinguishing box according to claim 3, it is characterised in that：The sensor is that temperature sensor or smog sense
Device.
7. fire extinguishing box according to claim 1, it is characterised in that：Smog is arranged at the pressure relief opening for waiting for extinguishing device to pass
Sensor.
8. fire extinguishing box according to claim 1, it is characterised in that：The bottom of lower layer box body (20) side wall is used for and waits for
It is fixed to each other at the top of extinguishing device, the bottom setting of lower layer box body (20) side wall is used for and waits for that extinguishing device top to be mutually close
The sealing strip of envelope.
9. fire extinguishing box according to claim 8, it is characterised in that：The base area of the lower layer box body (20) is less than or waits
In the top surface area for waiting for extinguishing device, lower layer box body (20) the sidewall bottom setting crimping (22), the sealing strip is set
It is placed at each crimping (22).
10. fire extinguishing box according to claim 8, it is characterised in that：It is described to wait for carrying connecting pin at the top of extinguishing device, it is described
The base area of lower layer box body (20) is more than the top surface area of the connecting pin, and lower layer box body (20) bottom is for being sleeved on institute
It states on connecting pin, each sealing strip is set to each sidewall bottom of the lower layer box body (20).
11. fire extinguishing box according to claim 2, it is characterised in that：The pressure relief opening (21) is located at the lower layer box body
(20) position of the one side or the multi-lateral close to the partition board (30).
12. fire extinguishing box according to claim 1, it is characterised in that：It is described to wait for that extinguishing device is battery pack (40).
13. a kind of extinguishing method, it is characterised in that：
After extinguishing device is on fire, wait for burning at the top of extinguishing device,
It detects and transmits the signal to control device after the signal burnt at the top of extinguishing device,
Switch under control device control at the liquid outlet of fire extinguishing separator for container is opened, and the extinguishing fluid is from fire extinguishing box
Layer box body flows into lower layer box body, then enters through the hole after the burn-through of extinguishing device side wall and wait in extinguishing device.
14. extinguishing method according to claim 13, it is characterised in that：
The extinguishing fluid is water.
15. extinguishing method according to claim 13, it is characterised in that：
After extinguishing device is on fire, the pressure relief opening for waiting for extinguishing device sprays dense smoke, after being known by smoke sensor device, Smoke
Machine starts.
16. extinguishing method according to claim 13, it is characterised in that：
It is described to wait for that extinguishing device is battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879007.3A CN108721808B (en) | 2018-08-03 | 2018-08-03 | Fire extinguishing box and fire extinguishing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879007.3A CN108721808B (en) | 2018-08-03 | 2018-08-03 | Fire extinguishing box and fire extinguishing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108721808A true CN108721808A (en) | 2018-11-02 |
| CN108721808B CN108721808B (en) | 2021-01-08 |
Family
ID=63942362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810879007.3A Active CN108721808B (en) | 2018-08-03 | 2018-08-03 | Fire extinguishing box and fire extinguishing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108721808B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138306A (en) * | 2019-06-26 | 2020-12-29 | 湖北德普智能装备有限公司 | Truss-like battery package automatic fire extinguishing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014090782A (en) * | 2012-11-01 | 2014-05-19 | Hochiki Corp | Electric power storage system |
| CN104309968A (en) * | 2014-10-11 | 2015-01-28 | 中山市福瑞特科技产业有限公司 | Fireproof garbage can |
| CN104361975A (en) * | 2014-11-05 | 2015-02-18 | 国家电网公司 | Transformer fire extinguishing protection device |
| CN105457206A (en) * | 2015-12-30 | 2016-04-06 | 西安必施恩能源科技有限公司 | Top cover type fire extinguishing device for equipment cabinet |
| CN206179936U (en) * | 2016-10-20 | 2017-05-17 | 上海方德尚动新能源科技有限公司 | A fire prevention case for power battery |
| CN208852287U (en) * | 2018-08-03 | 2019-05-14 | 蔚来汽车有限公司 | Fire extinguishing box |
-
2018
- 2018-08-03 CN CN201810879007.3A patent/CN108721808B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014090782A (en) * | 2012-11-01 | 2014-05-19 | Hochiki Corp | Electric power storage system |
| CN104309968A (en) * | 2014-10-11 | 2015-01-28 | 中山市福瑞特科技产业有限公司 | Fireproof garbage can |
| CN104361975A (en) * | 2014-11-05 | 2015-02-18 | 国家电网公司 | Transformer fire extinguishing protection device |
| CN105457206A (en) * | 2015-12-30 | 2016-04-06 | 西安必施恩能源科技有限公司 | Top cover type fire extinguishing device for equipment cabinet |
| CN206179936U (en) * | 2016-10-20 | 2017-05-17 | 上海方德尚动新能源科技有限公司 | A fire prevention case for power battery |
| CN208852287U (en) * | 2018-08-03 | 2019-05-14 | 蔚来汽车有限公司 | Fire extinguishing box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138306A (en) * | 2019-06-26 | 2020-12-29 | 湖北德普智能装备有限公司 | Truss-like battery package automatic fire extinguishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108721808B (en) | 2021-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102154314B1 (en) | ESS fire protection system using compressed air foam agent | |
| CN110010810A (en) | A kind of energy-storage battery cabinet with fire-fighting structure | |
| CN108744349B (en) | Fire suppression apparatus, systems and methods | |
| CN111790083A (en) | Early warning and fire extinguishing system and method for thermal runaway of lithium ion battery | |
| CN103474599A (en) | Lithium ion battery with ideal safety performance and battery pack | |
| CN105140427A (en) | Material for preventing a lithium battery and package piece thereof from burning and preparation method of material | |
| CN110010809A (en) | A kind of energy-storage battery cabinet with fire-fighting function | |
| CN110707260A (en) | Energy storage device | |
| CN218944200U (en) | Battery energy storage device and fire control system thereof | |
| CN108721808A (en) | Fire extinguishing box and extinguishing method | |
| CN114515402B (en) | Passivation fire-extinguishing explosion-suppression system and method for lithium battery energy storage system | |
| CN110170127B (en) | Microminiature fire extinguishing device with rechargeable battery pack and fire extinguishing method thereof | |
| CN208852287U (en) | Fire extinguishing box | |
| CN212751839U (en) | Lithium battery charging protection device | |
| CN213401914U (en) | Low-voltage distribution box with fire monitoring function | |
| CN212161938U (en) | Marine lithium battery box with fire prevention thermal insulation structure | |
| CN211024884U (en) | Battery energy storage system | |
| CN210778745U (en) | Energy storage device | |
| CN210409296U (en) | Safe microminiature extinguishing device | |
| CN219646585U (en) | Lithium battery PACK-level double-loop type extinction control system | |
| CN205516102U (en) | Novel intelligence alarm fire extinguisher | |
| CN210384641U (en) | Miniature fire extinguishing device of rechargeable battery pack | |
| CN209497052U (en) | A kind of central socket box structure with warning function | |
| CN114191745A (en) | Fire early warning and fire extinguishing system based on electric power parameter and machine vision comprehensive monitoring | |
| CN215387154U (en) | Fire fighting structure for energy storage container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200729 Address after: Susong Road West and Shenzhen Road North, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Weilai (Anhui) Holding Co., Ltd Address before: China Hong Kong Applicant before: NIO NEXTEV Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |