CN108987210A - A kind of controlled fuse of type high current disconnected fastly - Google Patents
A kind of controlled fuse of type high current disconnected fastly Download PDFInfo
- Publication number
- CN108987210A CN108987210A CN201710398638.9A CN201710398638A CN108987210A CN 108987210 A CN108987210 A CN 108987210A CN 201710398638 A CN201710398638 A CN 201710398638A CN 108987210 A CN108987210 A CN 108987210A
- Authority
- CN
- China
- Prior art keywords
- fusing
- heat generating
- generating device
- high current
- type high
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/0039—Means for influencing the rupture process of the fusible element
- H01H85/0047—Heating means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
Abstract
The present invention provides a kind of controlled fuse of type high current disconnected fastly comprising heat generating device and through-flow device；Through-flow device includes two mutually separated electrode pins and one or more first device for fusing for being connected between two electrode pins, and the first device for fusing has the first operating temperature；First device for fusing is arranged adjacent to heat generating device, and insulate with heat generating device.Since the device for fusing in through-flow device is close to heat generating device setting; shorten heat conduction path; reduce thermal diffusion bring power loss; therefore cutting instruction can be performed quickly, and with self overheating protection when system detection to fault initiating heats; prevent the thermal runaway of heating sheet; increased remote signaling function, it is possible to provide remote signals, informing system have executed cutting instruction.
Description
Technical field
The present invention relates to a kind of fuse, a kind of particularly controlled fuse of type high current disconnected fastly.
Background technique
With the development of electric car industry, the cruising ability of power battery becomes the bottleneck of Development of Electric Vehicles.For
Solve the problems, such as this, the capacity of power battery becomes greatly, while improving platform voltage, to reduce reactive loss.At present in electricity
In the electric-control system of electrical automobile, respectively it is in series on the positive and negative high voltage supply route of power battery by battery management system
The high voltage direct current relay of (Battery Management System abbreviation BMS) control, it is motor in electric car, electronic
Subsidiary engine and on-vehicle battery etc. are both connected on the high voltage supply route of power battery.Be capable of cutoff high power supply line in addition to
Except above-mentioned high voltage direct current relay, the Manual maintenance switch that is also mounted on power battery and it is connected on power supply line
On current insurance silk.Wherein, high voltage direct current relay is open type low-vacuum load-tripping device, due to carry high current, high voltage,
The galvano-cautery of contact surface easy to form is opened and closed for a long time, is further evolved into the failures such as contact adhesion, and causing cannot be timely
High voltage supply route is cut off.
BMS comes timely cutoff high power supply line without measure although contact adhesion can be detected.Maintenance is opened manually
Pass is normally on high-tension battery, disconnects high-voltage electricity when for repairing or check, when in vehicle operation if there is need
The case where wanting emergency power off, Manual maintenance switch just do not play effect.When current insurance silk is for short circuit or heavy overload
High voltage supply route is disconnected, when vehicle is not short circuit or overload fault, if desired promptly disconnects high voltage supply route, electric current is protected
Dangerous silk can not just play a role.If high-voltage electricity is introduced directly into driver's cabin, there will be very big security risks.
Fusible alloy generally applies to the overheat protector on white domestic appliances as a kind of thermally sensitive material, by
It is low in its impedance, it is smaller by the caused temperature rise of electric current, thus it is insensitive to the response fluctuation of electric current.But fusible alloy is applied to
When the protection of electric car, power battery can have the discharge current much larger than 1C due to peripheral hardware failure, therefore fusible alloy is right
When the response time of overcurrent protection is not strict with, alternative current insurance silk protects overcurrent.
Such as Chinese patent 201010203897.X discloses a kind of controlled fuse of high current, fever tablet and easily fusion
Farther out, fusible alloy can disconnect the transmission path of gold in 40 seconds, charge since power battery can bear overvoltage in short-term,
Overcurrent electric discharge, therefore charge and discharge power supply line can be timely and effectively cut off in charge and discharge.
And this need to be lacked currently on the market in the failure of internal cutting off in 5 seconds by high voltage direct current relay failure or other occur
Kind utilizes the fusing mechanism of fusible alloy, the protection device of high current is quickly cut off, so that it is guaranteed that the safe operation of electric car.
Summary of the invention
In order to solve the above-mentioned existing problems, it is an object of the invention to propose a kind of controlled fusing of type high current disconnected fastly
Device provides a kind of effective execution lockout mode for required protection circuit.
The purpose of the present invention is realized by following technical proposal:
A kind of controlled fuse of type high current disconnected fastly comprising heat generating device and through-flow device；Through-flow device includes mutual
Two electrode pins separated and one or more first device for fusing being connected between two electrode pins, first is molten
Disconnected device has the first operating temperature；First device for fusing is arranged adjacent to heat generating device, and insulate with heat generating device.Due to through-flow
Device is arranged adjacent to the heating surface of heat generating device, forms the heat conduction path in face and face, reduces thermal diffusion bring power
Loss enables the first device for fusing rapidly and accurately to be reacted for the temperature of heat generating device.
Further, the first device for fusing is close to heat generating device.First device for fusing is close to heat generating device, further increases
Heat conduction efficiency, and which thereby enhance the rapidity and accuracy of the reaction of the first device for fusing.
Further, electrode pin is sheet, and parallel with heat generating device.
Further, electrode pin includes stepped part, and the lower edge of stepped part is flushed with the lower edge of heat generating device.This structure
So that the structure of entire fuse is more regular, take up space smaller.
Further, the surface of through-flow device is provided at least two pads, two electrode pins in heat generating device
Welding is respectively corresponded at least two pads.
Further, in electrode pin weld, groove is set, independent pad is formed, the setting of groove when heated
Be conducive to generate a possibility that deformation reduces rupture.
Further, electrode pin passes through silver-based solder and pad soldering connection.
Further, heat generating device is resistive fever tablet.Fever tablet can be metal ceramic heating piece (MCH), ceramic heating
Piece (PTC) or thick film heating piece.
Further, enter to be close to the second device for fusing of heat generating device, the second fusing dress in the circuit in series of heat generating device
Setting has the second operating temperature, and the second operating temperature is higher than the first operating temperature.After the fusing of the first device for fusing, heating device
Continue to heat, when temperature reaches the second operating temperature after the second device for fusing is heated, the second device for fusing fusing, thus will heating
The circuit of device disconnects, it is avoided to continue to heat.
Further, it is close to heat generating device and is equipped with third device for fusing, third device for fusing and heat generating device insulate, and have
There is third operating temperature, third operating temperature is greater than or equal to the second operating temperature.The third device for fusing is remote signalling port,
When temperature reaches third operating temperature after heated, third device for fusing fusing, to provide the letter that the first device for fusing has been turned off
Number.
Further, the first device for fusing includes fusible alloy, marmem, bimetallic coated with fluxing disconnected agent
Piece temperature switch, the second device for fusing include fusible alloy, marmem, bimetallic temperature coated with fluxing disconnected agent
Switch, third device for fusing include fusible alloy, marmem, bimetallic strip temperature switch coated with fluxing disconnected agent.
Further, it is close to heat generating device and is equipped with third device for fusing, third device for fusing and heat generating device insulate, and have
There is third operating temperature, third operating temperature is higher than the first operating temperature.When being not provided with the second device for fusing, when third is molten
When disconnected device heating temperature reaches the third operating temperature higher than the first operating temperature, the fusing of third device for fusing.In principle, existing
Some is applied both to the application for temperature sensitive device for fusing.In the fusible alloy coated with fluxing disconnected agent,
Fluxing disconnected agent can coat on surface, can also all coat on internal and surface.In principle, the first device for fusing, the second device for fusing
It can be set to same apparatus with third device for fusing.
Further, through-flow device can high breaking device in parallel.High breaking device can fill for thermally sensitive fusing
It sets, or to the current insurance silk of current sense.
Beneficial effects of the present invention:
The fast disconnected controlled fuse of type high current of the invention is set due to the device for fusing in through-flow device close to heat generating device
It sets, shortens heat conduction path, reduce thermal diffusion bring power loss, therefore can be when system detection to fault initiating
When heating, cutting instruction is performed quickly, and with self overheating protection, prevents the thermal runaway of heating sheet, increased remote signaling function,
It can provide remote signals, informing system has executed cutting instruction.
Detailed description of the invention
Below in conjunction with following drawings, the invention will be further described, in which:
Fig. 1 is the decomposition diagram of the fast disconnected controlled fuse of type high current according to the present invention；
Fig. 2 is the diagrammatic cross-section of the fast disconnected controlled fuse of type high current according to the present invention；
Fig. 3 is the fever tablet substrate schematic diagram of the fast disconnected controlled fuse of type high current according to the present invention；
Fig. 4 is the fever tablet welding pin schematic diagram of the fast disconnected controlled fuse of type high current according to the present invention；
Fig. 5 is the heat generating device schematic diagram of the fast disconnected controlled fuse of type high current according to the present invention；
Wherein:
100 heat generating devices
101 shells
102 heater substrates
103 casting glues
104 heating circuits
105 left heating pads
Pad is heated in 106
107 right heating pads
108 left through-flow pads
109 right through-flow pads
110 left remote signalling pads
111 right remote signalling pads
112 left heating pins
113 right heating pins
114 second fusible alloys
115 second fluxing disconnected agent
200 through-flow devices
201 left electrode pins
2011 left grooves
202 right electrode pins
2021 right grooves
203 first fusible alloys
204 first fluxing disconnected agent
300 telecommunication equipments
301 left remote signalling pins
302 right remote signalling pins
303 third fusible alloys
The fluxing disconnected agent of 304 thirds
Specific embodiment
Referring to attached drawing, the present invention will be described in further detail.
Embodiment 1
The fast disconnected controlled fuse of type high current of the invention includes heat generating device 100 and through-flow device 200.Through-flow device
200 include the two panels mutually separated left electrode pin 201 of sheet and right electrode pin 202 and being connected to two panels electrode pin
Between one or more first device for fusing.Left electrode pin 201 and right electrode pin 202 are arranged fluted, are parallel to hair
Thermal 100, and include stepped part, the lower edge of the stepped part is flushed with the lower edge of heat generating device 100.
As shown in figure 3, the both ends that heat generating device 100 is close to the surface of through-flow device 200 are respectively arranged with left through-flow pad
108 include left groove 2011 with right through-flow pad 109, left electrode pin 201, are welded on left through-flow pad 108, are formed independently
Pad, right electrode pin 202 include right groove 2012, are welded on right through-flow pad 109, form independent pad, from
And through-flow device 200 is set to be close to fix with heat generating device 100, and insulate with the heating circuit of heat generating device 100 104.While the
One device for fusing is also close to fix with heat generating device 100, and the first device for fusing is the first fusible alloy 203 and the first fluxing disconnected agent
204, there is the first operating temperature.In present embodiment, heat generating device 100 is the metal ceramic heating piece of resistive sheet, also
It can be ceramic heating plate or thick film heating piece, common heat generating device is applicable in principle.When the first fusible alloy 203 is heated
When reaching the first operating temperature, under the activity and tension force effect of the first fluxing disconnected agent 204, the fusing of the first fusible alloy 203 is cut
The electrical connection broken between left electrode pin 201 and right electrode pin 202, to disconnect entire main circuit.
100 surface of heat generating device further include left heating pad 105, heating in pad 106 and right heating pad 107, wherein
The exit of heating circuit 104 is left heating pad 105, pad 106 in heating, and the left heating pin 112 of heat generating device 100 welds
It connects on left heating pad 105, right heating pin 113 is welded on right heating pad 106.Second device for fusing includes second easy
Fusion gold 114 and the second fluxing disconnected agent 115, have the second operating temperature, which is higher than the first operating temperature.The
Second fusible alloy 114 of two device for fusing connects pad 106 and right heating pad 107 in heating by hot weld, and same
Be close to heat generating device 100, thus be connected to right heating pin 113, right heating pad 107, the second fusible alloy 114, heat in weld
Disk 106, heating circuit 104, left heating pad 105, left heating pin 112 form the circuit of heat generating device 100.When second easily
When golden 114 heating temperatures of fusion rise to the second operating temperature, with the help of the second fluxing disconnected agent 115, the second fusible alloy
114 fusing make heat generating device 100 stop fever to cut off the circuit of heat generating device 100.
Electrode pin, heating pin and remote signalling pin are welded using silver-based solder pricker in the present embodiment, device for fusing
Using hot weld.
It further include telecommunication equipment 300,100 surface of heat generating device is additionally provided with left remote signalling pad 110 and right remote signalling pad
111, left remote signalling pin 301 is welded on left remote signalling pad 110, and right remote signalling pin 302 is welded on right remote signalling pad 111, the
Three device for fusing are welded on left remote signalling pad 110 and right remote signalling pad 111, and abutting heat generating device 100 is simultaneously exhausted with heat generating device
Edge, left remote signalling pin 301 and right remote signalling pin 302 connect individual remote signalling circuit.The third device for fusing is that third easily fuses
Gold 303 and the fluxing disconnected agent 304 of third have third operating temperature, individual remote signalling circuit are consequently formed.Third operating temperature etc.
In or greater than the second operating temperature.When third fusible alloy 303, which continues heating temperature, rises to third operating temperature, in third
Under the activity and tension force effect of fluxing disconnected agent 304, third fusible alloy 303 is disconnected, and thus issues remote signals, has informed system
Execute the disconnection work of the first device for fusing.
All construction packages in the space that shell 101 and heater substrate 102 surround, only expose left electrode pin 201,
Right electrode pin 202, left heating pin 112, right heating pin 113, left remote signalling pin 301, right remote signalling pin 302 are to overhanging
Out.Casting glue 103 is covered on 102 bottom of heater substrate, for being sealed.
The operation principle of the present invention is that: when occurring super-high-current in circuit, and when high voltage direct current relay failure, fever dress
Fever is set, the first device for fusing heated fast temperature for being close to heat generating device setting rises, when reaching the first operating temperature, the
It is dangerous to release super-high-current bring so that circuit be disconnected for the fusing of one device for fusing.Heat generating device continues to generate heat, and works as series connection
The second device for fusing in heat generating device circuit is heated when reaching the second operating temperature, fusing, thus returning heat generating device
Road disconnects, and heat generating device is made to stop heating.When third device for fusing continuation heating temperature reaches third operating temperature, fusing, from
And remote signals are issued, informing system has performed cutting function.
Embodiment 2
The present invention can also be not provided with the second device for fusing, and the third operating temperature of third device for fusing only needs greatly at this time
In the first operating temperature, in this way after the first device for fusing fuses, third device for fusing continues heated until temperature reaches third
Operating temperature, the fusing of third device for fusing, to issue remote signals, informing system has performed cutting function.
Embodiment 3
Through-flow device 200 can also high breaking device in parallel, improve breaking capacity.The high breaking device can be to be affected by temperature
Biggish fusible alloy can also be the current insurance silk being affected by electric current.When for fusible alloy, operating temperature is higher than
The fusible alloy of first operating temperature, when for current insurance silk, internal resistance value is greater than the internal resistance value of the first device for fusing.
Hereinafter, the present invention is specifically described by way of examples with reference to the accompanying drawings, involved embodiment is only
It for the preferred embodiment of the present invention, is not intended to restrict the invention, although having been carried out specifically referring to embodiment to the present invention
Bright, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments,
Or equivalent replacement of some of the technical features, but all within the spirits and principles of the present invention, it is made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of controlled fuse of type high current disconnected fastly, which is characterized in that including heat generating device and through-flow device；The through-flow dress
Set including two mutually separated electrode pins and be connected between two electrode pins one or more is first molten
Disconnected device, first device for fusing have the first operating temperature；First device for fusing is arranged adjacent to the heat generating device,
And it insulate with the heat generating device.
2. the controlled fuse of type high current disconnected fastly according to claim 1, first device for fusing are close to the fever
Device.
3. the controlled fuse of type high current disconnected fastly according to claim 1, the electrode pin are sheet, and with the hair
Thermal is parallel.
4. the controlled fuse of type high current disconnected fastly according to claim 3, the electrode pin includes stepped part, the rank
The lower edge in terraced portion is flushed with the lower edge of the heat generating device.
5. the controlled fuse of type high current disconnected fastly according to claim 1, in the heat generating device adjacent to through-flow device
Surface is provided at least two pads, and described two electrode pins and at least two pad respectively correspond welding.
6. the controlled fuse of type high current disconnected fastly according to claim 5 is arranged recessed in the electrode pin weld
Slot.
7. the controlled fuse of type high current disconnected fastly according to claim 5, the electrode pin pass through silver-based solder and institute
State pad soldering connection.
8. the controlled fuse of type high current disconnected fastly according to claim 1, the heat generating device is resistive fever tablet.
9. the controlled fuse of type high current disconnected fastly according to claim 1 to 8, in returning for the heat generating device
Road is connected into the second device for fusing of the abutting heat generating device, and second device for fusing has the second operating temperature, described
Second operating temperature is higher than first operating temperature.
10. the controlled fuse of type high current disconnected fastly according to claim 9, is close to the heat generating device and fuses equipped with third
Device, the third device for fusing and the heat generating device insulate, and have third operating temperature, and the third operating temperature is high
In or equal to second operating temperature.
11. the controlled fuse of type high current disconnected fastly according to claim 10, first device for fusing, described second are melted
Disconnected device and the third device for fusing include fusible alloy, marmem, bimetal leaf coated with fluxing disconnected agent
Temperature switch.
12. the controlled fuse of type high current disconnected fastly according to claim 1 to 8, is close to the heat generating device and sets
There is third device for fusing, the third device for fusing and the heat generating device insulate, and have third operating temperature, the third
Operating temperature is higher than first operating temperature.
13. the controlled fuse of type high current disconnected fastly according to claim 1 to 8, the through-flow device can be in parallel
High breaking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710398638.9A CN108987210A (en) | 2017-05-31 | 2017-05-31 | A kind of controlled fuse of type high current disconnected fastly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710398638.9A CN108987210A (en) | 2017-05-31 | 2017-05-31 | A kind of controlled fuse of type high current disconnected fastly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108987210A true CN108987210A (en) | 2018-12-11 |
Family
ID=64502257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710398638.9A Pending CN108987210A (en) | 2017-05-31 | 2017-05-31 | A kind of controlled fuse of type high current disconnected fastly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108987210A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022073359A1 (en) * | 2020-10-10 | 2022-04-14 | 厦门赛尔特电子有限公司 | Low-voltage controlled fuse |
| CN117352346A (en) * | 2023-12-05 | 2024-01-05 | 东莞市贝特电子科技股份有限公司 | Auxiliary thermal fuse and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203760407U (en) * | 2014-02-21 | 2014-08-06 | 厦门赛尔特电子有限公司 | Master control type temperature fuse device and temperature fuse device |
| CN203839326U (en) * | 2014-05-07 | 2014-09-17 | 厦门赛尔特电子有限公司 | High-voltage direct-current temperature fuse |
| CN206976271U (en) * | 2017-05-31 | 2018-02-06 | 厦门赛尔特电子有限公司 | A kind of controlled fuse of disconnected type high current soon |
-
2017
- 2017-05-31 CN CN201710398638.9A patent/CN108987210A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203760407U (en) * | 2014-02-21 | 2014-08-06 | 厦门赛尔特电子有限公司 | Master control type temperature fuse device and temperature fuse device |
| CN203839326U (en) * | 2014-05-07 | 2014-09-17 | 厦门赛尔特电子有限公司 | High-voltage direct-current temperature fuse |
| CN206976271U (en) * | 2017-05-31 | 2018-02-06 | 厦门赛尔特电子有限公司 | A kind of controlled fuse of disconnected type high current soon |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022073359A1 (en) * | 2020-10-10 | 2022-04-14 | 厦门赛尔特电子有限公司 | Low-voltage controlled fuse |
| CN117352346A (en) * | 2023-12-05 | 2024-01-05 | 东莞市贝特电子科技股份有限公司 | Auxiliary thermal fuse and manufacturing method thereof |
| CN117352346B (en) * | 2023-12-05 | 2024-02-23 | 东莞市贝特电子科技股份有限公司 | Auxiliary thermal fuse and manufacturing method thereof |
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