CN215971182U - Unmanned aerial vehicle battery safety cabinet that charges - Google Patents

Unmanned aerial vehicle battery safety cabinet that charges Download PDF

Info

Publication number
CN215971182U
CN215971182U CN202122683468.3U CN202122683468U CN215971182U CN 215971182 U CN215971182 U CN 215971182U CN 202122683468 U CN202122683468 U CN 202122683468U CN 215971182 U CN215971182 U CN 215971182U
Authority
CN
China
Prior art keywords
protective
charging
box
aerial vehicle
unmanned aerial
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.)
Expired - Fee Related
Application number
CN202122683468.3U
Other languages
Chinese (zh)
Inventor
廖飞
王亚楠
马达
韩洪亮
邓达
任宗良
孙金涛
李达
姚洪民
张军
刘海鹏
宋超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Jingang Huian Technology Co ltd
Original Assignee
Tianjin Jingang Huian Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Jingang Huian Technology Co ltd filed Critical Tianjin Jingang Huian Technology Co ltd
Priority to CN202122683468.3U priority Critical patent/CN215971182U/en
Application granted granted Critical
Publication of CN215971182U publication Critical patent/CN215971182U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/12Electric charging stations

Landscapes

  • Battery Mounting, Suspending (AREA)

Abstract

The utility model discloses an unmanned aerial vehicle battery safety charging cabinet, which belongs to the technical field of charging cabinets and comprises a protective box, wherein two protective grooves are formed in one side of the protective box, a charging box is arranged in each protective groove, a plurality of rechargeable batteries are embedded into the top end of the charging box, and the input end of the charging box is connected with a protective mechanism; protection machanism is including setting up the connecting plug at the charging case input, connecting plug one end is connected with the connection and inserts the row. According to the utility model, the leakage protector of the protection mechanism is arranged to automatically power off the connecting socket, after the temperature sensed by the temperature sensor is higher than the monitoring temperature, the electric control valve is opened, the dry powder enters the electric control valve under the action of pressure and enters the connecting pipe along the electric control valve, and the fire extinguishing nozzle performs downward spraying operation on the position of the rechargeable battery, so that the fire can be extinguished in the closed space, the greater safety problem caused by ignition is avoided, and the safety is higher in the charging process.

Description

Unmanned aerial vehicle battery safety cabinet that charges
Technical Field
The utility model relates to the technical field of charging cabinets, in particular to a safe charging cabinet for an unmanned aerial vehicle battery.
Background
The unmanned aerial vehicle battery can supply energy for the unmanned aerial vehicle and supply power to the unmanned aerial vehicle, but at present, unmanned aerial vehicle battery charging equipment generally has long charging time, personnel cannot monitor charging conditions all the time, and meanwhile, a plurality of charging conditions exist at night, so that the unmanned aerial vehicle battery charging equipment has the defect in the case of unmanned supervision;
in case unmanned aerial vehicle battery charger takes place the short circuit, the burning, when catching fire, will cause bigger conflagration, the conflagration can lead to other batteries to appear the circumstances such as explosion burning, can cause serious conflagration problem like this, and the security is lower.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an unmanned aerial vehicle battery safety charging cabinet, which can extinguish fire in a closed space by arranging a protection mechanism, avoid the greater safety problem caused by fire, and has higher safety in the charging process so as to solve the technical problems in the prior art.
In order to achieve the above purpose, the utility model provides the following technical scheme: an unmanned aerial vehicle battery safety charging cabinet comprises a protective box, wherein two protective grooves are formed in one side of the protective box, a charging box is arranged in each protective groove, a plurality of rechargeable batteries are embedded into the top end of the charging box, and the input end of the charging box is connected with a protective mechanism;
protection machanism is including setting up the connecting plug at the charging case input, connecting plug one end is connected with the connection and inserts the row, connect and insert the row top and install temperature sensor, the shower nozzle of putting out a fire is installed on protection inslot wall top, the shower nozzle top of putting out a fire is connected with the connecting pipe, electric control valve is installed to connecting pipe one end, electric control valve one end is provided with the pressure boost jar of putting out a fire, the protection box top just is located connecting pipe one side and is provided with audible-visual annunciator, two the protection groove below is provided with temperature display, the electric tank has been seted up to temperature display below, electric tank internally mounted has two earth-leakage protector.
Furthermore, two symmetrical protective doors are arranged on one side of the inner wall of the protective groove and on one side of the connecting plug, and the protective doors are connected with the protective box hinge to which the protective groove belongs.
Furthermore, two axial fans which are symmetrically arranged are installed on one side of the inner wall of the protective groove and above the temperature sensor, and the axial fans are fixedly detachably connected with a protective box to which the protective groove belongs through bolts.
Further, a reserve tank is installed on one side of the electric control valve, a reserve battery is arranged in the reserve tank, and the reserve tank is movably connected with the reserve battery.
Furthermore, a pulling handle is arranged on the front side of the charging box, and the pulling handle is movably connected with the charging box.
Furthermore, the fire extinguishing nozzle is communicated with the connecting pipe, and a plurality of through holes are formed in the exterior of the fire extinguishing nozzle.
Further, charging case both sides just are located the connecting plug below and all are provided with the reinforcement piece, the reinforcement piece bottom is connected with the support rubber piece, the direction locating piece is installed to support rubber piece one end, support rubber piece one side is provided with the supporting shoe.
Further, the cross section of each guide positioning block is in a right trapezoid shape, the guide positioning blocks are fixedly connected with the reinforcing blocks, and the two guide positioning blocks are symmetrically arranged relative to the middle of the charging box.
The utility model has the following advantages:
1. the leakage protector of the protection mechanism is arranged to automatically power off the connecting socket, after the temperature sensed by the temperature sensor is higher than the monitoring temperature, the electric control valve is opened, dry powder enters the electric control valve under the action of pressure and enters the connecting pipe along the electric control valve, and the fire extinguishing nozzle performs downward spraying operation on the position of the rechargeable battery, so that a fire can be extinguished in the closed space, the greater safety problem caused by ignition is avoided, and the safety is higher in the charging process;
2. the charging case removes along the direction of two guide locating pieces, and the support rubber piece can carry out the leading-in extrusion of laminating to the charging case side, and the charging case plays certain frictional force effect when the atress is extruded, can fix a position the charging case and place placing the in-process, avoids the charging case to produce the skew, guarantees unchangeably to temperature measurement and position of putting out a fire like this, more accurate carry out the temperature measurement, the operation of putting out a fire.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the earth leakage protector of the present invention;
FIG. 3 is a schematic view of the connection between the fire-extinguishing nozzle and the connecting pipe in the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the connection between the backup box and the backup battery according to the present invention;
in the figure: 1. a protective box; 2. a protective bath; 3. a charging box; 4. a rechargeable battery; 5. a connecting plug; 6. connecting the power strip; 7. a temperature sensor; 8. a fire extinguishing nozzle; 9. a connecting pipe; 10. an electrically controlled valve; 11. a pressurized fire extinguishing tank; 12. a spare box; 13. a backup battery; 14. an audible and visual alarm; 15. an electrical slot; 16. a leakage protector; 17. a temperature display screen; 18. a protective door; 19. pulling the handle; 20. an axial flow fan; 21. guiding a positioning block; 22. supporting the rubber block; 23. a reinforcing block; 24. and (7) a supporting block.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings of the specification and figures 1-5, the unmanned aerial vehicle battery safety charging cabinet comprises a protective box 1, wherein two protective grooves 2 are formed in one side of the protective box 1, a charging box 3 is arranged inside each protective groove 2, a plurality of charging batteries 4 are embedded into the top end of each charging box 3, and the input end of each charging box 3 is connected with a protective mechanism.
Protection machanism is including setting up connecting plug 5 at the 3 inputs of charging case, 5 one ends of connecting plug are connected with the connection and insert row 6, temperature sensor 7 is installed to connection row 6 top of inserting, 2 inner wall tops in protective housing are installed and are put out a fire shower nozzle 8, 8 tops of shower nozzle of putting out a fire are connected with connecting pipe 9, electric control valve 10 is installed to connecting pipe 9 one end, electric control valve 10 one end is provided with pressure boost fire extinguishing chamber 11, 1 top of protective housing just is located connecting pipe 9 one side and is provided with audible-visual annunciator 14, 2 below in two protective housing are provided with temperature display screen 17, electric tank 15 has been seted up to temperature display screen 17 below, 15 internally mounted in electric tank have two earth-leakage protector 16.
As shown in fig. 1 and fig. 3, two symmetrical protective doors 18 are arranged on one side of the inner wall of the protective groove 2 and on one side of the connecting plug 5, and the protective doors 18 are hinged to the protective box 1 to which the protective groove 2 belongs, so that the protective doors 18 can be closed when charging is carried out through the two protective doors 18, and thus, fire caused by charging can be prevented from overflowing and contacting more air, and the fireproof function is achieved.
As shown in fig. 3, two axial fans 20 symmetrically arranged are installed on one side of the inner wall of the protection groove 2 and above the temperature sensor 7, the axial fans 20 are detachably connected with the protection box 1 to which the protection groove 2 belongs through bolts, so that when charging is performed, a large amount of hot air generated by charging is discharged, the charging hot air is subjected to heat dissipation operation, and the temperature inside the protection groove 2 is normal.
As shown in fig. 5, a spare box 12 is installed on one side of the electric control valve 10, a spare battery 13 is arranged in the spare box 12, and the spare box 12 is movably connected with the spare battery 13, so that after the earth leakage protector 16 cuts off the power supply circuit, people can provide a spare power supply for the electric control valve 10, the audible and visual alarm 14 and the temperature sensor 7 through the spare battery 13 in the spare box 12, and thus, normal fire extinguishing and alarm operation is ensured.
As shown in figure 3, charging case 3 front side is provided with pulling handle 19, swing joint between pulling handle 19 and the charging case 3 to can pull pulling handle 19 and when charging the back that finishes, can carry charging case 3 and remove the operation, make things convenient for later stage to transport charging case 3, it is more convenient to transport.
As shown in figure 3, fire extinguishing nozzle 8 is linked together with connecting pipe 9, and a plurality of through-holes have been seted up to fire extinguishing nozzle 8 outside to connecting pipe 9 can communicate with fire extinguishing nozzle 8, and fire extinguishing nozzle 8 can arrange down through a plurality of through-holes like this, can spout the operation down to carbon dioxide powder like this, realizes the operation of putting out a fire.
As shown in fig. 4, reinforcing blocks 23 are arranged on both sides of the charging box 3 and below the connecting plug 5, a supporting rubber block 22 is connected to the bottom end of each reinforcing block 23, a guiding positioning block 21 is installed at one end of each supporting rubber block 22, a supporting block 24 is arranged on one side of each supporting rubber block 22, so that when the charging box 3 needs to be charged and placed, the charging box 3 can move along the guiding direction of the two guiding positioning blocks 21 by pushing the charging box 3, the charging box 3 then enters the gap between the two supporting rubber blocks 22 along the guiding positioning blocks 21, and the supporting rubber blocks 22 are supported and reinforced by the supporting blocks 24, so that the supporting rubber blocks 22 can be attached and guided to the side surfaces of the charging box 3, and meanwhile, the reinforcing blocks 23 can be attached to the supporting rubber blocks 22, so that the charging box 3 can be positioned and placed in the placing process when being pressed by force, the charging case 3 is prevented from being displaced.
As shown in fig. 4, the cross section of the guide positioning block 21 is in a right trapezoid shape, the guide positioning block 21 is fixedly connected with the reinforcing block 23, and the two guide positioning blocks 21 are symmetrically arranged in the middle of the charging box 3, so that the charging box 3 can enter along the guide positioning block 21 in a guiding manner when passing through the guide positioning block 21, the guide positioning block 21 and the reinforcing block 23 are connected more firmly, and the firmness of side surface attachment is improved.
The using process of the utility model is as follows:
when the portable charger is used, the charging box 3 moves along the guide of the two guide positioning blocks 21, the charging box 3 enters a gap between the two supporting rubber blocks 22, the supporting blocks 24 are used for supporting and reinforcing the supporting rubber blocks 22, the charging box 3 can be placed in the protective groove 2, the rechargeable battery 4 is sequentially inserted into the charging box 3, the connecting plug 5 can be inserted into the connecting socket 6 for charging operation, the temperature inside the protective groove 2 can be sensed by the temperature sensor 7 in the day, the detected temperature can be sensed by the temperature display screen 17 for displaying, when the rechargeable battery 4 is charged, short circuit and electric leakage occur, the automatic power failure can be carried out by the electric leakage protector 16, the connecting socket 6 is not electrified, meanwhile, the temperature sensor 7 carries out temperature sensing, and after the sensing temperature is too high, the audible and visual alarm 14 starts to carry out audible and visual alarm, open electric control valve 10 simultaneously, the inside supercharged dry powder of pressure boost fire extinguishing tank 11 spouts outward, and dry powder enters into electric control valve 10 under the effect of pressure in entering into connecting pipe 9 along electric control valve 10, collects in the shower nozzle 8 of putting out a fire by connecting pipe 9, and rethread shower nozzle 8 of putting out a fire spouts down, and shower nozzle 8 of putting out a fire carries out down to rechargeable battery 4 position department and spouts the operation to reach the operation that the dry powder was put out a fire, avoid conflagration excessive placing conflagration situation enlargements.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

Claims (8)

1. The utility model provides an unmanned aerial vehicle battery safety cabinet that charges, includes protective housing (1), its characterized in that: two protective grooves (2) are formed in one side of the protective box (1), a charging box (3) is arranged in each protective groove (2), a plurality of rechargeable batteries (4) are embedded into the top end of each charging box (3), and the input end of each charging box (3) is connected with a protective mechanism;
the protection mechanism comprises a connecting plug (5) arranged at the input end of the charging box (3), one end of the connecting plug (5) is connected with a connecting socket (6), a temperature sensor (7) is arranged above the connecting socket (6), the top end of the inner wall of the protective groove (2) is provided with a fire extinguishing nozzle (8), the top end of the fire extinguishing nozzle (8) is connected with a connecting pipe (9), one end of the connecting pipe (9) is provided with an electric control valve (10), one end of the electric control valve (10) is provided with a pressure boost fire extinguishing tank (11), an audible and visual alarm (14) is arranged at the top end of the protective box (1) and at one side of the connecting pipe (9), a temperature display screen (17) is arranged below the two protective tanks (2), electric tank (15) have been seted up to temperature display screen (17) below, electric tank (15) internally mounted has two earth-leakage protector (16).
2. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: two symmetrical protective doors (18) are arranged on one side of the inner wall of the protective groove (2) and on one side of the connecting plug (5), and the protective doors (18) are connected with a protective box (1) to which the protective groove (2) belongs through hinges.
3. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: two axial fans (20) which are symmetrically arranged are installed on one side of the inner wall of the protective groove (2) and above the temperature sensor (7), and the axial fans (20) are fixedly detachably connected with the protective box (1) to which the protective groove (2) belongs through bolts.
4. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: reserve tank (12) are installed to electric control valve (10) one side, reserve tank (12) inside is provided with stand-by battery (13), swing joint between reserve tank (12) and stand-by battery (13).
5. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: the front side of the charging box (3) is provided with a pulling handle (19), and the pulling handle (19) is movably connected with the charging box (3).
6. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: the fire extinguishing nozzle (8) is communicated with the connecting pipe (9), and a plurality of through holes are formed in the outer portion of the fire extinguishing nozzle (8).
7. The unmanned aerial vehicle battery safety cabinet that charges of claim 1, characterized in that: charging case (3) both sides just are located connecting plug (5) below and all are provided with reinforcing block (23), reinforcing block (23) bottom is connected with support rubber block (22), guide positioning piece (21) are installed to support rubber block (22) one end, support rubber block (22) one side is provided with supporting shoe (24).
8. The unmanned aerial vehicle battery safety cabinet of claim 7, characterized in that: the cross section of each guide positioning block (21) is in a right trapezoid shape, each guide positioning block (21) is fixedly connected with the corresponding reinforcing block (23), and the two guide positioning blocks (21) are symmetrically arranged in the middle of the charging box (3).
CN202122683468.3U 2021-11-04 2021-11-04 Unmanned aerial vehicle battery safety cabinet that charges Expired - Fee Related CN215971182U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122683468.3U CN215971182U (en) 2021-11-04 2021-11-04 Unmanned aerial vehicle battery safety cabinet that charges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122683468.3U CN215971182U (en) 2021-11-04 2021-11-04 Unmanned aerial vehicle battery safety cabinet that charges

Publications (1)

Publication Number Publication Date
CN215971182U true CN215971182U (en) 2022-03-08

Family

ID=80571648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122683468.3U Expired - Fee Related CN215971182U (en) 2021-11-04 2021-11-04 Unmanned aerial vehicle battery safety cabinet that charges

Country Status (1)

Country Link
CN (1) CN215971182U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118494241A (en) * 2024-06-11 2024-08-16 广东爱普拉新能源技术股份有限公司 AGV lithium battery intelligent charger convenient to installation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118494241A (en) * 2024-06-11 2024-08-16 广东爱普拉新能源技术股份有限公司 AGV lithium battery intelligent charger convenient to installation
CN118494241B (en) * 2024-06-11 2024-11-19 广东爱普拉新能源技术股份有限公司 AGV lithium battery intelligent charger convenient to installation

Similar Documents

Publication Publication Date Title
KR102185759B1 (en) Fire suppression system for ess
CN209921098U (en) Modular Electric Vehicle Charging Cabinet
CN114522363A (en) Three-level fire prevention strategy applicable to direct-current system of lithium iron phosphate battery of transformer substation
CN215971182U (en) Unmanned aerial vehicle battery safety cabinet that charges
CN113555797A (en) Flood post-disaster relief mobile substation with moisture-proof function
CN115770370A (en) Fire extinguishing system for inhibiting fire explosion of energy storage power station
CN217692204U (en) Electric energy metering control cabinet with safe and reliable operation
CN115303103A (en) A new energy vehicle charging pile with fire-fighting components and using method thereof
CN217642806U (en) Fire and explosion prevention fork truck battery cabinet that charges
US20230178865A1 (en) Battery cell, battery unit and battery cluster
CN209133862U (en) A kind of weak electricity system environment comprehensive control cabinet
CN219420007U (en) Novel explosion-proof electric control device
CN218980306U (en) Electric automatic fire extinguishing equipment
CN219090922U (en) Safety charging and discharging device for lithium battery
CN218161876U (en) Cabinet that charges that possesses fire control function
CN209921099U (en) Maintenance-friendly electric vehicle charging cabinet
CN117883733A (en) UPS temperature control detection fire extinguishing device
CN216920676U (en) Fire prevention heat preservation safety type steel construction
CN212571785U (en) Explosion-proof electrical cabinet capable of automatically extinguishing fire
CN215221803U (en) Automatic fire extinguishing and battery replacing cabinet for clothes closet
CN114714945A (en) Fill electric pile box structure that possesses automatic fire extinguishing function
CN219534625U (en) Energy storage battery cabinet with inflation plate spraying fire-fighting system
CN223668521U (en) An emergency fire extinguishing device for battery cell charging and discharging testing
CN220495444U (en) Safe fireproof electric energy metering box
CN223978435U (en) A smart and safe battery swapping cabinet

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: 20220308