CN208062010U - A kind of fuse of high response speed - Google Patents
A kind of fuse of high response speed Download PDFInfo
- Publication number
- CN208062010U CN208062010U CN201721893919.3U CN201721893919U CN208062010U CN 208062010 U CN208062010 U CN 208062010U CN 201721893919 U CN201721893919 U CN 201721893919U CN 208062010 U CN208062010 U CN 208062010U
- Authority
- CN
- China
- Prior art keywords
- arc extinguishing
- grid pieces
- extinguishing grid
- conductive plate
- fuse
- 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.)
- Withdrawn - After Issue
Links
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 41
- 238000005452 bending Methods 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 46
- 238000010891 electric arc Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003721 gunpowder Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- OLRXHZHVFRYMHO-UHFFFAOYSA-N [N+](=O)([O-])[O-].[K+].[B+3].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] Chemical compound [N+](=O)([O-])[O-].[K+].[B+3].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] OLRXHZHVFRYMHO-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OJYBUGUSFDKJEX-UHFFFAOYSA-N tungsten zirconium Chemical compound [Zr].[W].[W] OJYBUGUSFDKJEX-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff
Abstract
A kind of fuse of high response speed, including upper cover and lower housing, are provided with conductive plate between upper cover and lower housing；Insulation arc extinguishing diaphragm is provided between conductive plate and upper cover；Cavity is set in upper cover, gas generating unit is provided in cavity；Fracture groove is opened up below the conductive plate relative to one side position of lower ending opening of cavity；Front and back relative spacing is provided with preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces in lower housing, and the chamber resettling slid after being broken for conductive plate is formed between preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces；The fracture groove across conductive plate width is offered below the conductive plate in the both ends of the upper end opening of chamber resettling；It is provided with buffer chamber between preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces and lower housing bottom plate；Arc extinguishing grid pieces are connected to by the gas discharge outlet being arranged on lower housing with outside afterwards.The utility model makes conductive plate fracture to realize that circuit disconnects purpose, fast response time, security performance height by gas impact force.
Description
Technical field
The utility model is related to fuse, refer in particular to be subjected to impact in new-energy automobile etc. or when other contingencies,
The fuse structure of main circuit can be quickly cut off in the fuse protecting device of main circuit with quick response.
Background technology
Fuse is common electric components, is played a protective role in circuit.When general fuse circuit overload, lead to
Crossing overload current causes melt fever quick fuse melt to which disconnecting circuit realizes circuit protection.With opening for new-energy automobile
It sends out and gradually universal, new-energy automobile has used a large amount of battery pack, has been related to providing the main electricity of power for new-energy automobile
Road.In new-energy automobile main circuit using it is existing by fever fuse melt fuse, when new-energy automobile by
When other burst accidents such as shock, since the time is especially short, common fuse, which has little time fusing disconnecting circuit, makes new-energy automobile
Power is lost, occurs or expands accident so as to cause security risk, cause serious consequence.
Invention content
The technical problem to be solved by the utility model is to provide a kind of fuse of high response speed, being overloaded or
When contingency, can quickly disconnect melt, to disconnect main circuit, realize circuit protection, have the very high speed of response and
Good security performance.
In order to solve the above technical problems, technical solution provided by the utility model is a kind of fuse of high response speed,
It is characterized by comprising upper covers and lower housing, and the conductive plate being connect with circuit is provided between upper cover and lower housing；Described
Insulation arc extinguishing diaphragm is provided between conductive plate and the upper cover；Cavity, the cavity upper end sealing are set in the upper cover
Lower ending opening；The lower ending opening of the cavity and the insulation arc extinguishing membrane contacts；It is set to gas in the cavity
Device；Front and back relative spacing is provided with preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces in the lower housing, and the rear arc extinguishing grid pieces lean on
One end of the nearly preceding arc extinguishing grid pieces is fixed on partition board, and the preceding arc extinguishing grid pieces are under one end of the rear arc extinguishing grid pieces
End is fixed on the partition board lower end, and the opposite both ends of the preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces are separated simultaneously shape by the partition board
At a chamber resettling for being slid after conductive plate fracture；In the institute in the both ends of the upper end opening of the chamber resettling
State the fracture groove offered below conductive plate across the conductive plate width；In the preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces
The buffer chamber being connected to the preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces is provided between lower housing bottom plate；Arc-chute after described
Piece is connected to by the gas discharge outlet being set on the lower case with outside；Gap between each grid of preceding arc extinguishing grid pieces is
The overflow channel that gas is overflowed from the chamber resettling.
The upper end opening positioned at the chamber resettling relative to the fracture groove leading in the other side at one end
The bending groove across the conductive plate width is offered above battery plate；The fracture groove is located remotely from the bending groove
In the upper end opening side of the chamber resettling.
One is offered respectively below the conductive plate on the inside of the both ends of the upper end opening of the chamber resettling
The fracture groove.
One is offered respectively in the upper surface of the conductive plate on the inside of the both ends of the upper end opening of the chamber resettling
The bending groove；A fracture groove is offered below the conductive plate between the two bending grooves.
The fracture groove is that V-type is broken groove.
The bending groove is U-shaped bending groove.
The preceding arc extinguishing grid pieces are to be vertically arranged, and the preceding arc extinguishing grid pieces are close to the end face of the rear arc extinguishing grid pieces side
Arcwall face.
The partition board is angularly disposed to the preceding inclined inclined-plane partition board of arc extinguishing grid pieces, under the inclined-plane partition board
End is provided with inclined hook angle obliquely, and the preceding arc extinguishing grid pieces are fixed at described close to the lower end of one end of the partition board
It hooks on angle, forms the chamber resettling between the preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces.
In the preceding arc extinguishing grid pieces parallel or perpendicular to the front side wall of the lower housing, when the preceding arc extinguishing grid pieces perpendicular to
When the front side wall, the gap between each grid of the preceding arc extinguishing grid pieces upper end is sealed to form several gas overflowing slot.
The partition board is L-type structure, and the preceding arc extinguishing grid pieces are vertical plane close to the end face of partition board side.
The gas generating unit includes igniter, powder chamber；Being provided in the igniter can be with external sense
The ignitor of device connection.
The insulation arc extinguishing diaphragm is flexible partition, and one layer of arc extinguishing substance is coated in the flexible partition table
The fuse of the utility model, by gas generating unit, (current sensor experiences impact force with external sensor
Sensor etc.) connection, when receiving external sensor signal, ignitor igniting makes the gunpowder of powder chamber react production
Raw bulk gas is emitted into the cavity of upper cover, and the gas for the crunch rapidly gathered in cavity impacts conductive plate, makes absolutely
Edge arc extinguishing diaphragm is broken, and makes conductive plate i.e. fracture groove fracture at weak location；Using bending groove as axis, conductive plate to
Under slid downwards along arc one end of preceding arc extinguishing grid pieces.Gas is along gas overflowing slot downwards and by the grid of preceding arc extinguishing grid pieces
After piece gap is spilled over to buffer chamber, then the arc extinguishing grid pieces gap after, finally by the gas discharge outlet on the shell wall of lower housing
Drain into outside.An electric arc part for generation is divided into small electricity by the arc extinguishing diaphragm arc extinguishing that insulate, other parts by preceding arc extinguishing grid pieces
Arc carries out arc extinguishing, the further arc extinguishing of arc extinguishing grid pieces after the electric arc of also remaining passes through after buffer chamber after preceding arc extinguishing grid pieces
It is thorough to electric arc arc extinguishing.The fuse blows of the utility model disconnect speed of response height, have very high security performance.
Description of the drawings
Fig. 1, the utility model fuse perspective cross-sectional structural schematic diagram.
Fig. 2, the utility model melt lower housing structural schematic diagram.
Fig. 3, the fracture of the utility model conductive plate and gas overflowing operation principle structural schematic diagram.
Fig. 4, another structural schematic diagram of the utility model conductive plate.
Fig. 5, another structural schematic diagram of the utility model conductive plate.
Fig. 6, arc extinguishing grid pieces another kind structural schematic diagram before the utility model.
Specific implementation mode
Scheme in view of the above technology is now lifted a preferred embodiment and is specifically described in conjunction with diagram.Referring to Fig. 1 to Fig. 3,
The fuse of the utility model includes the upper cover of fuse, lower housing, conductive plate, wherein.
Upper cover 1, lid are located on lower housing 2, and conductive plate 3, upper cover 1, conductive plate 3 are provided between upper cover and lower housing
It is screwed on lower housing.One layer of insulation arc extinguishing diaphragm 4 is provided between upper cover on conductive plate 3.
Cavity 11 is offered in upper cover 1 is used as combustion chamber, the sealing of 11 upper end of cavity, lower ending opening to be located at the lower face of upper cover
On.Gas generating unit 12 is provided in cavity 11.Gas generating unit includes powder chamber, igniter and and external sense
The ignitor 13 of device connection.External sensor may include circuit sensor, shock transducer etc., can electric current is excessive,
The signal for receiving enormous impact force etc. is transferred to ignitor respectively, lights a fire.The pyrotechnic composition of powder chamber is divided into two-stage, and first
Grade is starts medicine, and the second level generates for flue gas, and ingredient includes following material (optional combination):Potassium hyperchlorate zirconium, potassium hyperchlorate tungsten
Zirconium, potassium hyperchlorate zircoium hydride, potassium hyperchlorate titanium, potassium hyperchlorate titantium hydride, boron potassium nitrate and black powder.When external sensor passes
When carrying out signal, ignitor makes ignition device promote to light the startup medicine of powder chamber, promotes flue gas to give birth to after starting medicine reaction
At gunpowder carry out reaction generate bulk gas.Generation bulk gas simultaneously will be in gas quick release to cavity.
Conductive plate 3 is slab construction, and the gap between upper cover and lower housing is sealed between upper cover and lower housing.It leads
Battery plate is conductive material, can be the metals such as aluminium, copper.One layer of insulation arc extinguishing diaphragm 4 is provided between conductive plate 3 and upper cover,
For sealing and the effect of part arc extinguishing.Electrode plate is located at the both ends outside upper cover and lower housing and offers respectively and external circuit company
The wiring hole connect.In the electrode plate positioned at upper cover cavity side in the following, offering fracture groove 31, it is broken groove first choice V-type knot
Structure can also be other easily broken structural forms.It is conductive when the powerful gas impact in the cavity that conductive plate receives upper cover
Plate can disconnect first from weak fracture groove.When being disconnected for conductive plate, can smoothly it fall downwards, positioned at upper cover cavity
The other side outside conductive plate above offer bending groove 32, the bending groove first choice U-shaped structure.When conductive plate is by gas
When body impact disconnects, then the conductive plate disconnected is bent downward in bending groove, makes conductive plate using bending groove as axis, to
Under hang, without causing conductive plate arbitrarily to bend or whole fracture, cause the impact failure to lower housing.Insulate arc extinguishing diaphragm
4, it is the fexible film of a kind of high intensity, insulation, high temperature resistant material, it can be in electric arc coated with one layer on the surface of the fexible film
It is decomposed under high temperature action and generates arc extinguishing gases to reach the substance quickly extinguished for promoting electric arc, generally use polyformaldehyde conduct
Coat.Between being covered in the fracture of conductive plate when gas generating unit starts, insulation arc extinguishing diaphragm, which plays, prevents electric arc from prolonging
The effect of arc portions energy is stretched and absorbed, while being also coated with to decompose to generate under high arc temperature effect on arc extinguishing diaphragm and go out
The substance of arc gas promotes the quick extinguishing of electric arc to reach.Such as naked arc extinguishing diaphragm, in the moment that conductive plate disconnects, production
Raw powerful electric arc can fully enter arc-chutes, and arc-chutes arc extinguishing difficulty is caused to increase.
Lower housing 2, including shell wall offer gas discharge outlet 21 on rear side shell wall.Bending on conductive plate is recessed
It is provided with inclined-plane partition board 22 in lower housing below slot, which is fixed on lower housing, and it is oblique that lower end is provided with one
On the hook angle ticked.Arc extinguishing grid pieces 23 after being provided between inclined-plane partition board and the rear side shell wall for being provided with gas discharge outlet.
The upper end of inclined-plane partition board is located at the rear side of the bending groove of conductive plate.Arc extinguishing grid pieces are made of the partition board of several pieces parallel intervals afterwards,
One end of which is fixed on inclined-plane partition board, the other end is fixed on rear side shell wall, and the upper end is fixed on the upper shell wall of lower housing；Afterwards
Arc extinguishing grid pieces are communicated with gas discharge outlet.The arc extinguishing grid pieces 24 before the other side of inclined-plane partition board is provided with, preceding arc extinguishing grid pieces are by counting
The partition board of piece parallel interval forms.Preceding arc extinguishing grid pieces are arranged close to the lower end of inclined-plane partition board one end at the hook angle of inclined-plane partition board,
It is fixed by the hook angle of inclined-plane partition board, the other end of preceding arc extinguishing grid pieces is fixed on the front side shell wall of lower housing, preceding
The upper end of arc extinguishing grid pieces is fixed on the upper shell wall of lower housing, and preceding arc extinguishing grid pieces are vertical with front side shell wall, at the same with lower housing bottom
Portion is in vertical state.Camber is arranged in preceding arc extinguishing grid pieces one end close to inclined-plane partition board side, keeps entire preceding arc extinguishing grid pieces close
The end face of inclined-plane partition board side forms curved end, and the upper end of the arcwall face is located at the front side of the fracture groove of conductive plate.Under
Opening is offered on shell on shell wall, which is located at the upper end-face edge of rear arc extinguishing grid pieces, the other end position of the opening
In the front side of the upper end-face edge of preceding arc extinguishing grid pieces.The opening lower housing of inclined-plane partition board, the curved end of preceding arc extinguishing grid pieces, upper shell wall
It is upper to form an accommodating cavity 26 smoothly slid for conductive plate.Make its fracture when gas generating unit generates gas impact conductive plate
And when sliding downwards, gas can be overflowed with the landing of conductive plate by gap between the grid of preceding arc extinguishing grid pieces, too fast when overflowing
When, gas pressure quickly reduces, and may cause the speed that conductive plate slides that can reduce, influence arc extinguishing speed.In order to make conductive plate
It quickly slides, gap portion is closed between the grid of the upper end of preceding arc extinguishing grid pieces, makes it in the curved end upper end of preceding arc extinguishing grid pieces
Place forms gas overflowing slot 27.When conductive plate, which is broken, to be slid downwards, gas moves downward one section first along gas overflowing slot
Distance after, then pass through preceding arc extinguishing grid pieces grid between gap discharge.The arching trajectory radian of conductive plate slid downwards is with before
The radian of the curved end of arc extinguishing grid pieces is identical, is slid along certain track, rather than arbitrarily slides, when avoiding conductive plate landing
Accidental shock is caused to lower housing.Cavity 28 is provided between the lower end of forward and backward arc extinguishing grid pieces and the Housing Base of lower housing.
Enter cavity 28 after the premenstrual arc extinguishing grid pieces of gas, then arc extinguishing grid pieces drain into outside through gas discharge outlet again after again.
Preceding arc extinguishing grid pieces 24 may be set to be other forms, for example, referring to Fig. 6, preceding arc extinguishing grid pieces can be with lower housing
Bottom in vertical state, but is in parallel device with shell wall on front side of lower housing, while it is close to one end end face of rear arc extinguishing grid pieces
It is set as sliding after arc is broken for conductive plate.Preceding arc extinguishing grid pieces may be set to be and the perpendicular shape of side shell wall all around
State is arranged in parastate with lower housing bottom, arcwall face is set as close to one end of rear arc extinguishing grid pieces.Preceding arc extinguishing grid pieces
It can be set as other according to the fracture mode of conductive plate close to one end end face of rear arc extinguishing grid pieces side and slid for conductive plate
Other structures, corresponding partition board may be set to be other forms, though why form, the condition that must satisfy is one to have
The channel of supplied gas discharge；The accommodating cavity that arc extinguishing grid pieces are formed before and after two is smoothly slid for conductive plate without influencing gas row
It puts.
Upper cover, lower housing material are isolation material.Since the impact force that gas generates is huge, upper cover will be led by screw
Battery plate and upper cover are fixed on lower housing, make upper cover, conductive plate and lower housing that can be combined together with close and firm, then through being bullied
When body impact force, ensure between upper cover and lower housing without departing from.
In addition to above-mentioned fuse structure, the conductive plate of the utility model can also be arranged as required to as other structures shape
Formula, such as：With reference to figure 4, opened up respectively on the conductive plate 5 on the inside of the both ends of the accommodating cavity upper end opening of lower housing
Bending groove 51 opens up a fracture groove 52 below the conductive plate between two bending grooves, correspondingly, accommodating cavity 55 is cut
Face is provided with rectangular configuration, with facilitate conductive plate be broken after hang to accommodating cavity.Accommodating cavity is rectangular configuration i.e. in preceding arc extinguishing
Grid is set as vertical plane 53 close to partition board side, and partition board is also correspondingly arranged as L-type partitions 54.Conductive plate can also be Fig. 5's
Structure, the conductive plate 6 on the inside of the both ends of the upper end opening of the accommodating cavity of lower housing open up a fracture groove 61 separately below；
Accommodating 62 section of cavity is provided with rectangular configuration, to hang to accommodating cavity after facilitating conductive plate to be broken.Accommodating cavity is rectangle knot
Structure is set as vertical plane 63 in preceding arc extinguishing grid pieces close to partition board side, and partition board is also correspondingly arranged as L-type partitions 64.According to need
It wants, conductive plate and corresponding accommodating cavity may be set to be other structures form.
The operation principle of the utility model fuse：Referring to Fig. 3, when (current sensor or impact force pass external sensor
Sensor etc.) when transmitting signals to gas generating unit, ignitor work lights startup medicine, then facilitates cigarette by starting medicine
The gas for a large amount of powerful air pressures that gunpowder generates is full of in the cavity of upper cover, and the gas in cavity is since pressure is powerful, to undershoot
Insulation arc extinguishing diaphragm and conductive plate are hit, under the effect of powerful gas pressure, insulation arc extinguishing diaphragm and conductive plate are each turned off, disconnected
The electric arc part that moment for opening generates by the arc extinguishing diaphragm arc extinguishing that insulate, in addition most of electric arc and gas with conductive plate to
Lower landing, as shown in the curved arrow in Fig. 3, gas overflows gas overflowing circuit along the gas overflowing slot of arcwall face, passes through
Enter after preceding arc extinguishing grid pieces after cavity 27 and outside is discharged via gas discharge outlet by rear arc extinguishing grid pieces again；Electric arc is then in conductive plate
When landing, big electric arc multiple small electric arcs will be divided by preceding arc extinguishing grid pieces, and by its major part at preceding arc extinguishing grid pieces into
Row arc extinguishing, across preceding arc extinguishing grid pieces electric arc again after arc extinguishing grid pieces to electric arc divide arc extinguishing, realize complete arc extinguishing.
The intelligent fuse of the utility model, on new-energy automobile in use, when vehicle is received more than allowable range
External shock power when, fuse also can first time in by disconnect, to play a protective role.It disconnects the response time
It is short, safeguard protection performance is greatly improved, avoids and other equipment instrument is damaged.
Claims (12)
1. a kind of fuse of high response speed, it is characterised in that including upper cover and lower housing, set between upper cover and lower housing
It is equipped with the conductive plate being connect with circuit；Insulation arc extinguishing diaphragm is provided between the conductive plate and the upper cover；On described
Cavity is set in lid, and the cavity upper end seals lower ending opening；The lower ending opening of the cavity connects with the insulation arc extinguishing diaphragm
It touches；It is set to gas generating unit in the cavity；Arc extinguishing grid pieces before front and back relative spacing is provided in the lower housing
With rear arc extinguishing grid pieces, the rear arc extinguishing grid pieces are fixed on close to one end of the preceding arc extinguishing grid pieces on partition board, the preceding arc-chute
Piece lower end of one end of arc extinguishing grid pieces after described is fixed on the partition board lower end, and the partition board is by the preceding arc extinguishing grid pieces
The both ends opposite with rear arc extinguishing grid pieces separate and are formed a chamber resettling for being slid after conductive plate fracture；Positioned at described
The fracture offered below the conductive plate in the both ends of the upper end opening of chamber resettling across the conductive plate width is recessed
Slot；It is provided between the preceding arc extinguishing grid pieces and rear arc extinguishing grid pieces and lower housing bottom plate and the preceding arc extinguishing grid pieces and rear arc extinguishing
The buffer chamber of grid connection；Arc extinguishing grid pieces are connected by the gas discharge outlet being set on the lower case with outside after described
It is logical；Gap between each grid of preceding arc extinguishing grid pieces is the overflow channel that gas is overflowed from the chamber resettling.
2. the fuse of high response speed according to claim 1, it is characterised in that positioned at the upper of the chamber resettling
End opening relative to the fracture groove offer above conductive plate in the other side at one end it is wide across the conductive plate
The bending groove of degree；In the upper end opening side for the chamber resettling that the fracture groove is located remotely from the bending groove.
3. the fuse of high response speed according to claim 1, it is characterised in that positioned at the upper of the chamber resettling
A fracture groove is offered below the conductive plate on the inside of the both ends of end opening respectively.
4. the fuse of high response speed according to claim 1, it is characterised in that positioned at the upper of the chamber resettling
The upper surface of the conductive plate on the inside of the both ends of end opening offers a bending groove respectively；Positioned at the two bending grooves it
Between the conductive plate below offer a fracture groove.
5. according to the fuse of any high response speed of claim 2 to 4, it is characterised in that the fracture groove is V
Type is broken groove.
6. according to the fuse of any high response speed of claim 2 or 4, it is characterised in that the bending groove is U
Type bending groove.
7. the fuse of high response speed according to claim 2, it is characterised in that the preceding arc extinguishing grid pieces are vertically to set
It sets, the preceding arc extinguishing grid pieces are arcwall face close to the end face of the rear arc extinguishing grid pieces side.
8. the fuse of high response speed according to claim 7, it is characterised in that the partition board be it is angularly disposed to
The inclined inclined-plane partition board of preceding arc extinguishing grid pieces is provided with inclined hook angle obliquely in the lower end of the inclined-plane partition board, described
Preceding arc extinguishing grid pieces are fixed at close to the lower end of one end of the partition board on the hook angle, are gone out with after in the preceding arc extinguishing grid pieces
The chamber resettling is formed between arc grid.
9. the fuse of high response speed according to claim 7, it is characterised in that the preceding arc extinguishing grid pieces it is parallel or
Perpendicular to the front side wall of the lower housing, when the preceding arc extinguishing grid pieces are perpendicular to the front side wall, on the preceding arc extinguishing grid pieces
Gap between each grid of end is sealed to form several gas overflowing slot.
10. according to the fuse of any high response speed of claim 3 to 4, it is characterised in that the partition board is L-type knot
Structure, the preceding arc extinguishing grid pieces are vertical plane close to the end face of partition board side.
11. the fuse of high response speed according to claim 1, it is characterised in that the gas generating unit includes a little
Fiery device, powder chamber；The ignitor that can be connected to external sensor is provided in the igniter.
12. the fuse of high response speed according to claim 1, it is characterised in that the insulation arc extinguishing diaphragm is flexibility
Diaphragm is coated with one layer of arc extinguishing substance in the flexible partition table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721893919.3U CN208062010U (en) | 2017-12-29 | 2017-12-29 | A kind of fuse of high response speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721893919.3U CN208062010U (en) | 2017-12-29 | 2017-12-29 | A kind of fuse of high response speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208062010U true CN208062010U (en) | 2018-11-06 |
Family
ID=63994346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721893919.3U Withdrawn - After Issue CN208062010U (en) | 2017-12-29 | 2017-12-29 | A kind of fuse of high response speed |
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| CN (1) | CN208062010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010823A (en) * | 2017-12-29 | 2018-05-08 | 西安中熔电气股份有限公司 | A kind of fuse of high response speed |
-
2017
- 2017-12-29 CN CN201721893919.3U patent/CN208062010U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010823A (en) * | 2017-12-29 | 2018-05-08 | 西安中熔电气股份有限公司 | A kind of fuse of high response speed |
| CN108010823B (en) * | 2017-12-29 | 2023-11-21 | 西安中熔电气股份有限公司 | Fuse with high response speed |
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Address after: 710075 Zhongrong Electric Industrial Base, No. 97, Jinye Second Road, High tech Zone, Xi'an, Shaanxi Patentee after: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. Address before: 710068 Room 3-10303, East Area, Modern Enterprise Center, No. 12, Zone A, Venture R&D Park, No. 69, Jinye Road, High tech Zone, Xi'an, Shaanxi Patentee before: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20231121 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20231121 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |