CN110416971A - A kind of onboard surge protection device - Google Patents
A kind of onboard surge protection device Download PDFInfo
- Publication number
- CN110416971A CN110416971A CN201910843842.6A CN201910843842A CN110416971A CN 110416971 A CN110416971 A CN 110416971A CN 201910843842 A CN201910843842 A CN 201910843842A CN 110416971 A CN110416971 A CN 110416971A
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- China
- Prior art keywords
- protective device
- switching mode
- elastomeric element
- circuit board
- surge protection
- 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.)
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- 238000005381 potential energy Methods 0.000 claims abstract description 31
- 229910000679 solder Inorganic materials 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims description 133
- 238000009413 insulation Methods 0.000 claims description 12
- 230000001012 protector Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 33
- 230000002035 prolonged effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 4
- 208000025274 Lightning injury Diseases 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical class [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical class [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- GZCWPZJOEIAXRU-UHFFFAOYSA-N tin zinc Chemical class [Zn].[Sn] GZCWPZJOEIAXRU-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
Abstract
The embodiment of the invention discloses a kind of onboard surge protection devices, comprising: circuit board；Lightning protection component, the lightning protection component are welded on the circuit board by solder；Elastomeric element, including first end and second end, the first end of the elastomeric element are fixedly connected with the circuit board, and the second end of the elastomeric element is fixedly connected with the lightning protection component, and the elastomeric element stores elastic potential energy.Technical solution provided in an embodiment of the present invention is realized when route is struck by lightning or surge voltage, be can guarantee that lightning protection component is detached from route in time in the case where lightning protection component continues overcurrent, is ensured line security, prevent catching fire, and cost is relatively low.
Description
Technical field
The present embodiments relate to anti-thunder technical field more particularly to a kind of onboard surge protection devices.
Background technique
Surge protection device provides function of safety protection for various electronic equipments, instrument and meter, communication line and obtains wide
General application, the superiority and inferiority of performance are directly related to the work that can relevant device safe and reliable.
The surge protection device of the prior art, in the line using individual votage limit type lightning protection component or using switching mode
Route protection is made in lightning protection component and the series connection of votage limit type lightning protection component, to protect the safe operation of electronic equipment.
But when route is struck by lightning or when overvoltage, lightning protection component can generate in the case where lasting overcurrent or over-voltage
Amount of heat, overlong time will lead to catching fire, not can guarantee line security.And the prior art in the line protect by serial temperature
Danger, Temperature protection is difficult to disconnect sometimes, causes route overheat burning, and the cost is relatively high.
Summary of the invention
The embodiment of the present invention provides a kind of onboard surge protection device, to realize when route is struck by lightning or surge voltage
When, it can guarantee that lightning protection component is detached from route in time in the case where lightning protection component continues overcurrent, ensure line security, prevented
Fire burning.
In a first aspect, the embodiment of the present invention provides a kind of onboard surge protection device, including circuit board；
Lightning protection component, the lightning protection component are welded on the circuit board by solder；
Elastomeric element, including first end and second end, the first end of the elastomeric element are fixedly connected with the circuit board,
The second end of the elastomeric element is fixedly connected with the lightning protection component, and the elastomeric element stores elastic potential energy.
Optionally, the lightning protection component includes: switching mode protective device；
The first end of the switching mode protective device is electrically connected with the first power circuit and third power circuit respectively, and second
End is electrically connected with second source route.
Optionally, the onboard surge protection device further includes the first votage limit type protector being set on the circuit board
Part and the second votage limit type protective device；
The first end of the first votage limit type protective device is electrically connected with first power circuit, first votage limit type
The second end of protective device is electrically connected with the first end of the switching mode protective device；The of the second votage limit type protective device
One end is electrically connected with the third power circuit, the second end of the second votage limit type protective device and the switching mode protector
The first end of part is electrically connected.
Optionally, the switching mode protective device is semiconductor discharge tube, gas-discharge tube or open failure gas discharge
Pipe；The votage limit type protective device is varistor, Transient Suppression Diode or electrostatic protector.
Optionally, the elastomeric element is spring or elastic slice.
Optionally, the elastomeric element is spring, and the spring is in tensional state；
The circuit board includes fixation hole；
The first end of the spring is fixedly connected with the switching mode protective device, the second end of the spring with it is described solid
Determine hole to be fixedly connected.
Optionally, the elastomeric element is spring, and the spring is in compressive state；
The circuit board further includes cover board；
The first end of the spring is fixedly connected with the cover board, the second end of the spring and the switching mode protector
Part is fixedly connected.
Optionally, which further includes insulation sliding slot；
The insulation sliding slot is fixed on the circuit board, and the switching mode protective device is set in the insulation sliding slot
Portion.
Optionally, the elastomeric element is elastic slice；
The second end of the switching mode protective device is electrically connected by the elastic slice with second source route；The elastic slice
First end is fixedly connected with the circuit board, and the second end of the second end of the elastic slice and the switching mode protective device passes through weldering
Material welding.
Second aspect, the embodiment of the present invention provide a kind of electronic equipment, use the present invention any real on the electronic equipment
The onboard surge protection device of example offer is provided.
Lightning protection component is welded on circuit board by the embodiment of the present invention by solder, and elastomeric element and lightning protection component is arranged
It is fixedly connected, when route is struck by lightning or when surge voltage, can guarantee lightning protection component in the case where lightning protection component continues overcurrent
It is detached from route in time, ensures line security, prevents catching fire.And compared with prior art, temperature of connecting in the line is not needed
Degree insurance, cost is relatively low.
Detailed description of the invention
Fig. 1 is a kind of connecting structure for electrical equipment schematic diagram of onboard surge protection device of the prior art；
Fig. 2 is a kind of structural schematic diagram of onboard surge protection device provided in an embodiment of the present invention；
Fig. 3 is a kind of connecting structure for electrical equipment schematic diagram of onboard surge protection device provided in an embodiment of the present invention；
Fig. 4 is the connecting structure for electrical equipment schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastomeric element in Fig. 5 discharges；
Fig. 7 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastomeric element in Fig. 7 discharges；
Fig. 9 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastomeric element in Fig. 9 discharges；
Figure 11 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention；
Figure 12 is the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastomeric element in Figure 11 discharges；
Figure 13 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of connecting structure for electrical equipment schematic diagram of onboard surge protection device of the prior art.It is onboard with reference to Fig. 1
The circuit of surge protection device includes the first votage limit type lightning protection component 101, the second votage limit type lightning protection component 102, third votage limit type
Lightning protection component 103, switching mode lightning protection component 11, the first Temperature protection 121, second temperature insurance 122 and third Temperature protection
123.Wherein, the first end of the first votage limit type lightning protection component 101 is electrically connected by the first Temperature protection 121 with firewire L, the first limit
The second end of die mould lightning protection component 101 is electrically connected with zero curve N；The first end of second votage limit type lightning protection component 102 passes through the second temperature
Degree insurance 122 is electrically connected with zero curve N, the second end of the second votage limit type lightning protection component 102 and the first of switching mode lightning protection component 11
The first end of end electrical connection, third votage limit type lightning protection component 103 is electrically connected by third Temperature protection 123 with firewire L, third limit
The second end of die mould lightning protection component 103 is electrically connected with the first end of switching mode lightning protection component 11, and the of switching mode lightning protection component 11
Two ends are electrically connected with ground wire PE.
Due to there is lasting power-frequency voltage between firewire L and zero curve N, it is easy the presence of electric leakage on votage limit type lightning protection component
Stream causes to continue high current to pass through so that votage limit type lightning protection component is easy to happen qualitative change and even deteriorates, if lightning protection component can not be with
Route is detached from time, and catching fire can occur for overlong time.
For each Temperature protection when lightning stroke failure, catching fire occurs in the votage limit type lightning protection component of series connection with it, perception should
The temperature of votage limit type lightning protection component is increased and is disconnected.Due to Temperature protection perception votage limit type lightning protection component temperature precision compared with
Difference, and perception heat are slower, and in order to make Temperature protection be able to bear thunder-strike current, need to select the biggish temperature of rated current
Degree insurance, it may occur that when there is lightning stroke failure, catching fire in votage limit type lightning protection component, the still unblown phenomenon of Temperature protection, because
This, the safety of existing surge protection device is poor.
In view of this, the embodiment of the invention provides a kind of onboard surge protection devices.Fig. 2 provides for the embodiment of the present invention
A kind of onboard surge protection device structural schematic diagram, with reference to Fig. 2, which includes circuit board 20；
Lightning protection component 30, lightning protection component 30 are welded on circuit board 20 by solder；
The first end of elastomeric element 40, including first end and second end, elastomeric element 40 is fixedly connected with circuit board 20, bullet
Property component 40 second end be fixedly connected with lightning protection component 30, elastomeric element 40 store elastic potential energy.
Specifically, when route is struck by lightning or when overvoltage, surge current can be released to the earth by lightning protection component 30, or
Person prevents surge current from entering circuit board 20.Lightning protection component 30 is welded with circuit board 20 by solder, wherein solder can be with
It is the solders such as tin bismuth series solder, tin zinc series solder and tin indium series solder, can also be room temperature solder.Work as circuit board
20 are struck by lightning or when surge voltage, under the effect of prolonged overcurrent, lightning protection component 30 can generate high heat, when heat reaches
When the softness number of solder, elastomeric element 40 pulls open lightning protection component 30, so that lightning protection component 30 is detached from circuit board, prevents accident
Fire, wherein the first end of elastomeric element 40 is fixedly connected with the fixation hole 60 being set on circuit board 20, second end and lightning protection
Device 30 is fixedly connected, so that elastomeric element 40 is in horizontality, it is parallel with circuit board 20.
In addition, compared with prior art, the embodiment of the present invention combines itself of lightning protection component 30 only with elastomeric element 40
Characteristic, so that it may realize that lightning protection component 30 and 20 route of circuit board are detached from, ensure line security, and not need serial temperature insurance
Silk, advantageously reduces cost.
Fig. 3 is a kind of connecting structure for electrical equipment schematic diagram of onboard surge protection device provided in an embodiment of the present invention, reference
Fig. 2 and Fig. 3, on the basis of the above embodiments, optionally, lightning protection component 30 includes: switching mode protective device 31；
The first end A1 of switching mode protective device 31 is electrically connected with the first power circuit and third power circuit respectively, and second
End A2 is electrically connected with second source route；
Wherein, lightning protection component 30 or votage limit type protective device.Specifically, the first power circuit and switching mode are protected
The first end A1 of device 31 is welded, and third power circuit is also welded with the first end A1 of switching mode protective device 31, second source
The second end A2 of route and switching mode protective device 31 is welded, and elastomeric element 40 is fixedly connected with switching mode protective device 31.When
Route is struck by lightning or when surge voltage, and under the effect of prolonged overcurrent, switching mode protective device 31 can generate high heat, by
Elastic potential energy is stored in elastomeric element 40, when heat reaches the softness number of solder, elastomeric element 40 will be opened using elastic potential energy
Pass type protective device 31 pulls open, and keeps the first end A1 of switching mode protective device 31 and the first power circuit and third power circuit disconnected
It opens, second end A2 and second source route disconnect, that is, second source route is relative to the first power circuit and third power circuit
It disconnects, and the first power circuit is also mutually disconnected with third power circuit.
Illustratively, the first power circuit can be zero curve N, and second source route can be firewire L, third power circuit
It can be ground wire PE.In actual use, it may appear that the case where power circuit is reversely connected, for example, firewire L and zero curve N are connect
Anti- situation, the embodiment of the present invention can be in firewire L and zero curve N reversed, the second varistor 52 and switching mode protective device
31 are connected between reversed firewire L and ground wire PE, the power frequency continued flow of reversed firewire L and protective wire PE are cut off, to ensure line
Road safety.
It should be noted that the first end A1 of switching mode protective device 31 be not limited to only with the first power circuit and third electricity
The welding of source route, can increase other power circuits according to actual needs and first end A1 is welded, to guarantee and the onboard surge
The safety of the late-class circuit of protective device electrical connection.And the embodiment of the present invention is not to the first power circuit, second source route
Limitation is made with the type of third power circuit, three power circuits can any wiring.
Optionally, Fig. 4 is that the connecting structure for electrical equipment of the onboard surge protection device of another kind provided in an embodiment of the present invention shows
Be intended to, on the basis of the above embodiments, with reference to Fig. 4, the first power circuit and third power circuit electrical connection after again with switch
The first end A1 of type protective device 31 is electrically connected, and the second end A2 of second source route and switching mode protective device 31 is welded, bullet
Property component 40 is fixedly connected with switching mode protective device 31.When route is struck by lightning or when surge voltage, in prolonged overcurrent
Under effect, switching mode protective device 31 can generate high heat, since elastomeric element 40 stores elastic potential energy, when heat reaches solder
Softness number when, elastomeric element 40 is pulled open switching mode protective device 31 using elastic potential energy, makes switching mode protective device 31
First end A1 is simultaneously switched off with the first power circuit and third power circuit, and second end A2 and second source route disconnect, that is, the
Two power circuits are disconnected relative to the first power circuit and third power circuit, but the first power circuit and third power circuit are still
Keep electrical connection.
It should be noted that Fig. 3 and Fig. 4 is respectively the electricity of onboard surge protection device under power circuit difference connection type
Gas attachment structure schematic diagram, wherein Fig. 3 be the first power circuit and third power circuit respectively with switching mode protective device 31
The connecting structure for electrical equipment schematic diagram of first end A1 welding, it is electrical that Fig. 4 is that the first power circuit and third power circuit are electrically connected
Attachment structure schematic diagram.
Optionally, onboard surge protection device further includes 51 He of the first votage limit type protective device being set on circuit board 20
The first end of second votage limit type protective device 52, the first votage limit type protective device 51 is electrically connected with the first power circuit, the first limit
The second end of die mould protective device 51 is electrically connected with the first end A1 of switching mode protective device 31；Second votage limit type protective device 52
First end be electrically connected with third power circuit, the second end of the second votage limit type protective device 52 and switching mode protective device 31
First end A1 electrical connection.On the basis of the above embodiments, when switching mode protection device 31 is a kind of no thunder and lightning instantaneous overvoltage
In high-impedance behavior, once response thunder and lightning wink overvoltage, change in the instantaneous impedance is low impedance characteristic, the protection for allowing lightning current to pass through
Device；If switching mode protection device 31 can be made to generate high heat when switching mode protection 31 long-time of device is by high current,
Cause fire.Elastomeric element 40 is fixedly connected with switching mode protective device 31, when circuit board 20 is struck by lightning or when surge voltage,
Under the effect of prolonged overcurrent, switching mode protective device 31 can generate high heat, since elastomeric element 40 stores elastic potential energy,
When heat reaches the softness number of solder, elastomeric element 40 is pulled open lightning protection component 30 using elastic potential energy, protects switching mode
Device 31 is detached from circuit board, prevents unexpected fire.
With continued reference to Fig. 3, optionally, switching mode protector 31 are semiconductor discharge tube, gas-discharge tube or open circuit lose
Imitate gas-discharge tube；The votage limit type protective device is varistor, Transient Suppression Diode or electrostatic protector.
Wherein, semiconductor discharge tube (Thyristor Surge Suppresser, TSS) is made of to utilize thyristor principle
, electric discharge is connected by the breakdown current trigger device of PN junction, very big surge current or pulse current can be flowed through, punctured
The range of voltage constitutes the range of overvoltage protection.Gas-discharge tube (GasDischarge Tube, GDT) is a kind of clearance-type
Lightning protection element, play the role of release thunder and lightning momentary excess current and over-voltage in circuit, due to gas-discharge tube
The electrode insulation resistance of GDT is very big, parasitic capacitance very little, has apparent advantage to the lightning protection of high-frequency signal circuit, into one
Step improves the performance of power supply circuit protection lightning impulse.Open failure discharge tube (Open Gas Discharge
Tube, OGDT) it is that one kind is resistant to be struck by lightning, and the protection device of open failure function is realized more than power frequency threshold current.Show
Example property, switching mode protector 31 can be gas-discharge tube, and votage limit type protective device can be varistor, since gas is put
The parasitic capacitance very little of fulgurite, and the parasitic capacitance of varistor is very big, can make after gas-discharge tube is connected with varistor
The parasitic capacitance of route reduces.When route is without lightning stroke or surge voltage, gas-discharge tube can be by varistor and route system
System isolation, so that No leakage electric current in varistor；When route is by being struck by lightning, gas-discharge tube discharges rapidly conducting, is pressing
Under the action of quick resistance, it can effectively inhibit lightning current, protection circuit safety.
Optionally, switching mode protective device 31 can be SMT encapsulation.SMT encapsulation is a kind of surface encapsulation of electronic device
Technology can reduce the thickness of circuit board using SMT encapsulation, and when 31 long-time of switching mode protective device is in overcurrent condition
Under, it is encapsulated relative to DIP, the high heat that switching mode protective device 31 generates can make the switching mode protective device 31 of SMT encapsulation
It is easier to get detached route.
Optionally, elastomeric element 40 is spring or elastic slice.Wherein spring or elastic slice can store elastic potential energy, and utilize
Switching mode protective device is detached from route by elastic potential energy.
Fig. 5 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention, and Fig. 6 is in Fig. 5
The structural schematic diagram of onboard surge protection device after the elastic potential energy release of elastomeric element, with reference to Fig. 5 and Fig. 6, elastomeric element 40
For spring, spring is in tensional state；
Circuit board 20 includes fixation hole 60；
The first end of spring is fixedly connected with switching mode protective device 31, and the second end and fixation hole 60 of spring are fixed to be connected
It connects.
Specifically, the first power circuit is electrically connected with third power circuit, the first end of switching mode protective device 31 and the
The welding of one power circuit, the second end and second source route of switching mode protective device 31 are welded.Switching mode protective device 31 can
To be set to 210 side of first edge of circuit board 20, fixation hole 60 be can be set in 220 side of second edge of circuit board 20.Show
Example property, with reference to Fig. 4, the first end A1 of switching mode protective device 31 passes through the first votage limit type protective device 51 and the first power supply line
Road N electrical connection, second end A2 are electrically connected with second source route L, and third power circuit PE passes through the second votage limit type protective device
52 are electrically connected with first end A1, i.e., the first power circuit N is electrically connected with third power circuit PE.Votage limit type protective device can be
Varistor, varistor are a kind of resistance devices with nonlinear wind vibration, using the nonlinear characteristic of varistor,
When overvoltage appears in the both ends of varistor, varistor can by voltage clamping to a relatively-stationary voltage value,
With the safe operation of the common protection circuit plate 20 of switching mode protective device 31.For example, when route is by Lightning Over-voltage, first
Votage limit type protective device 51 and the second votage limit type protective device 52 switch lightning voltage clamper to a relatively-stationary voltage value
Type protective device 31 present it is low-resistivity release to overcurrent, but prolonged overcurrent can be such that switching mode protective device 31 produces
Raw high heat, so that solder fusing, is divided switching mode protective device 31 and route by the elastic potential energy that elastomeric element 40 stores
From disconnecting second source route L (with reference to Fig. 6) relative to the first power circuit N and third power circuit PE, effective guarantee line
The Electrical Safety on road, prevents fire.
On the basis of the above embodiments, illustratively, the first votage limit type protective device 51 and the second votage limit type protector
Part 52 can be arranged in parallel on circuit board 20；Switching mode protective device 31 is set to the first votage limit type protective device 51 and second
Between votage limit type protective device 52.By the way that switching mode protective device 31 to be set to the first votage limit type protective device being placed in parallel
51 and second between votage limit type protective device 52, can shorten electrically connecting for switching mode protective device 31 and second source route L
Distance is connect, the impedance loss of route is reduced.And first votage limit type protective device 51 and the second votage limit type protective device 52 it is parallel right
Claim setting, the visual effect of circuit board 20 can be beautified.
With continued reference to Fig. 5, circuit board 20 can also include the first edge 210 and second edge 220 being oppositely arranged；Switch
Type protective device 31 is set to first edge 210, and fixation hole 60 is set to second edge 220.The embodiment of the present invention in this way,
The both ends that switching mode protective device 31 and fixation hole 60 are separately positioned on to circuit board are equivalent to, so that switching mode protective device 31
Farther out with the distance of fixation hole 60, be conducive to spring and store biggish elastic potential energy in a stretched state, it is sufficient to soften in solder
When, lightning protection component 30 is pulled open, so that lightning protection component 30 is detached from route, prevents unexpected fire.
It should be noted that switching mode protective device 31 is illustratively shown in Fig. 5 is set to first edge 210, Gu
Determine hole 60 and be set to second edge 220, not limitation of the invention, in other embodiments, can also be set as needed
The relative position of switching mode protective device 31 and fixation hole 60, can be set as needed in practical applications.
Optionally, Fig. 7 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention, Fig. 8
For the structural schematic diagram of onboard surge protection device after the elastic potential energy release of elastomeric element in Fig. 7, with reference to Fig. 3, Fig. 7 and Fig. 8,
Illustratively, switching mode protective device 31 can be set in second edge 220, and fixation hole 60 is set to first edge 210.First
The first end of votage limit type protective device 51 is electrically connected with the first power circuit N, the second end of the first votage limit type protective device 51 with
The first end A1 of switching mode protective device 31 is electrically connected, the first end and third power circuit PE of the second votage limit type protective device 52
Electrical connection, the second end of the second votage limit type protective device 52 are electrically connected with the first end A1 of switching mode protective device 31, switching mode
The second end A2 of protective device 31 is electrically connected with second source route L.The embodiment of the present invention is in this way, be conducive to shorten switch
Electrical connection between type protective device 31 and varistor can reduce the impedance between device route.
Spring is in tensional state, stores elastic potential energy, when route is struck by lightning or when surge voltage, in prolonged mistake
Under stream effect, switching mode protective device 31 can generate high heat, and when heat reaches the softness number of solder, spring utilizes storage
Switching mode protective device 31 from 220 layback of second edge to 210 side of first edge, is made switching mode protective device 31 by elastic potential energy
It is detached from circuit board, makes second source route L and third power circuit PE, second source route L and the first power circuit N, first
Power circuit N and third power circuit PE are detached from circuit simultaneously, do not interfere with each other, prevent second source route L and the first power supply line
Road N is reversed, guarantees that second source route L and the first power circuit N is effectively detached from route (as shown in Figure 8), ensures route electricity consumption
Safety, prevents unexpected fire.
It should be noted that Fig. 7 is structure of the switching mode protective device 31 without departing from the onboard surge protection device of route
Schematic diagram, Fig. 8 are the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastomeric element in Fig. 7 discharges, Fig. 7 and figure
8 only show the connection relationship between each device, do not make restriction to its specific location, and do not do to the type of power circuit any
It limits.
Fig. 9 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention, and Figure 10 is in Fig. 9
The structural schematic diagram of onboard surge protection device after the elastic potential energy release of elastomeric element, spring release is elastic in order to clearly demonstrate
State after potential energy, Figure 10 are the schematic diagram of the section structure of the A-A along Fig. 9.On the basis of the various embodiments described above, with reference to Fig. 9
And Figure 10, elastomeric element 40 are spring, spring is in compressive state；
Circuit board 20 further includes cover board 70；
The first end of spring is fixedly connected with cover board 70, and the second end of spring is fixedly connected with switching mode protective device 31.
Optionally, which further includes insulation sliding slot 80；Insulation sliding slot 80 is fixed on circuit board 20,
Switching mode protective device 31 is set to inside insulation sliding slot 80.
Specifically, the first end of spring and the connection type of cover board 70 can be welded with rivet interlacement or using high-temperature solder
It connects, so that the first end of spring still is able to be reliably connected with cover board 70 after the generation high heat of switching mode protective device 31.Switch
Type protective device 31 is arranged in 70 side of cover board, and the second end of spring is fixedly connected with switching mode protective device 31, so that at spring
In compressive state, elastic potential energy is stored.Slideway can be set in insulation sliding slot 80, switching mode protective device 31 is set to slideway
It is interior, when route is struck by lightning or when surge voltage, under the effect of prolonged overcurrent, switching mode protective device 31 can generate high fever
Amount, when heat reaches the softness number of solder, switching mode protective device 31 is passed through insulation using the elastic potential energy of storage by spring
Sliding slot 80 pushes away circuit (with reference to Figure 10), make second source route L relative to the first power circuit N and third power circuit PE all
It disconnects, to guarantee route Electrical Safety.
Figure 11 is the structural schematic diagram of the onboard surge protection device of another kind provided in an embodiment of the present invention, Figure 12 Figure 11
The structural schematic diagram of onboard surge protection device after the elastic potential energy release of middle elastomeric element, on the basis of the above embodiments,
With reference to Figure 11 and Figure 12, elastomeric element 40 is elastic slice；The second end of switching mode protective device 31 passes through elastic slice and second source line
Road L electrical connection；The first end of elastic slice is fixedly connected with circuit board 20, the second end of elastic slice and the second of switching mode protective device 31
It is welded by solder at end.
Specifically, the second end of switching mode protective device 31 is electrically connected by elastic slice with second source route L, i.e., elastic slice is made
For the conduction path between the second end and second source route L of switching mode protective device 31.The first end and circuit board of elastic slice
20 are fixedly connected, so that the first end of elastic slice and circuit board 20 still are able to reliably after the generation high heat of switching mode protective device 31
Connection, the mode being fixedly connected can be welded with rivet interlacement or using high-temperature solder.Elastic slice storage elastic potential energy works as circuit board
20 are struck by lightning or when surge voltage, under the effect of prolonged overcurrent, switching mode protective device 31 can generate high heat, work as heat
When amount reaches the softness number of solder, the second end of elastic slice and the second end of switching mode protective device 31 and second source route L
Between solder fusing, elastic slice flicked the second end of elastic slice using the elastic potential energy of storage, and elastic slice restores stationary state (reference
Figure 12), the conduction path between the second end of switching mode protective device 31 and second source route L disconnects, and makes second source line
Road L is disconnected relative to the first power circuit N and third power circuit PE, to guarantee route Electrical Safety.
It should be noted that the structure of Figure 11 onboard surge protection device when being elastic slice and the welding of switching mode protective device 31
Schematic diagram, Figure 12 are the structural schematic diagram of onboard surge protection device after the elastic potential energy of elastic slice in Figure 11 discharges, Figure 11 and figure
12 only show the connection relationship between elastic slice and switching mode protective device 31, do not make restriction, and this to the specific location of elastic slice
The first power circuit may be L in inventive embodiments, and second source route is N, and third power circuit is PE, and the present invention is implemented
Example does not do any restriction to the type of power circuit.
Switching mode protective device is welded on circuit board by the embodiment of the present invention by solder, and elastomeric element is arranged and opens
Pass type protective device is fixedly connected, when route is struck by lightning or when surge voltage, continues the feelings of overcurrent in switching mode protective device
It can guarantee that switching mode protective device is detached from route in time under condition, ensure line security, prevent catching fire.And with prior art phase
Than not needing serial temperature insurance in the line, cost is relatively low, it is easier to be detached from switching mode protective device and route.
The embodiment of the invention provides a kind of electronic equipment, Figure 13 is a kind of electronic equipment provided in an embodiment of the present invention
Structural schematic diagram, the electronic equipment include the onboard surge protection device that any embodiment of that present invention provides.Such as the electronics is set
The standby electricity consumption that can be in the devices such as automotive electronics, communication, new energy, security protection, consumer electronics, industrial electronic, medical electronics is set
It is standby etc..Electronic equipment provided in an embodiment of the present invention includes the onboard surge protection device in above-described embodiment, therefore the present invention
The electronic equipment that embodiment provides also has beneficial effect described in above-described embodiment.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of onboard surge protection device characterized by comprising
Circuit board；
Lightning protection component, the lightning protection component are welded on the circuit board by solder；
Elastomeric element, including first end and second end, the first end of the elastomeric element is fixedly connected with the circuit board, described
The second end of elastomeric element is fixedly connected with the lightning protection component, and the elastomeric element stores elastic potential energy.
2. onboard surge protection device according to claim 1, which is characterized in that the lightning protection component includes: switching mode
Protective device；
The first end of the switching mode protective device is electrically connected with the first power circuit and third power circuit respectively, second end with
The electrical connection of second source route.
3. onboard surge protection device according to claim 2, which is characterized in that further include being set on the circuit board
The first votage limit type protective device and the second votage limit type protective device；
The first end of the first votage limit type protective device is electrically connected with first power circuit, the first votage limit type protection
The second end of device is electrically connected with the first end of the switching mode protective device；The first end of the second votage limit type protective device
It is electrically connected with the third power circuit, the second end of the second votage limit type protective device and the switching mode protective device
First end electrical connection.
4. onboard surge protection device according to claim 3, which is characterized in that the switching mode protective device is partly to lead
Body discharge tube, gas-discharge tube or open failure gas-discharge tube；
The votage limit type protective device is varistor, Transient Suppression Diode or electrostatic protector.
5. onboard surge protection device according to claim 2, which is characterized in that the elastomeric element is spring or bullet
Piece.
6. onboard surge protection device according to claim 5, which is characterized in that the elastomeric element is spring, described
Spring is in tensional state；
The circuit board includes fixation hole；
The first end of the spring is fixedly connected with the switching mode protective device, the second end of the spring and the fixation hole
It is fixedly connected.
7. onboard surge protection device according to claim 5, which is characterized in that the elastomeric element is spring, described
Spring is in compressive state；
The circuit board further includes cover board；
The first end of the spring is fixedly connected with the cover board, and the second end of the spring and the switching mode protective device are solid
Fixed connection.
8. onboard surge protection device according to claim 7, which is characterized in that further include insulation sliding slot；
The insulation sliding slot is fixed on the circuit board, and the switching mode protective device is set to inside the insulation sliding slot.
9. onboard surge protection device according to claim 5, which is characterized in that the elastomeric element is elastic slice；
The second end of the switching mode protective device is electrically connected by the elastic slice with second source route；The first of the elastic slice
End is fixedly connected with the circuit board, and the second end of the second end of the elastic slice and the switching mode protective device is welded by solder
It connects.
10. a kind of electronic equipment, which is characterized in that use any onboard electricity of claim 1-9 on the electronic equipment
Gush protective device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910843842.6A CN110416971A (en) | 2019-09-06 | 2019-09-06 | A kind of onboard surge protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910843842.6A CN110416971A (en) | 2019-09-06 | 2019-09-06 | A kind of onboard surge protection device |
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| CN110416971A true CN110416971A (en) | 2019-11-05 |
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| CN201910843842.6A Pending CN110416971A (en) | 2019-09-06 | 2019-09-06 | A kind of onboard surge protection device |
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| CN207490506U (en) * | 2017-09-30 | 2018-06-12 | 上海欣丰电子有限公司 | A kind of small size Surge Protector |
| CN211151515U (en) * | 2019-09-06 | 2020-07-31 | 深圳市槟城电子有限公司 | Board carries electric surge protection device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201075676Y (en) * | 2007-03-26 | 2008-06-18 | 佛山市浦斯电子有限公司 | Surge protector |
| CN201266524Y (en) * | 2008-08-20 | 2009-07-01 | 常州市创捷防雷电子有限公司 | Surge protector |
| US20140092514A1 (en) * | 2012-10-01 | 2014-04-03 | Ceramate Technical Co., Ltd. | Modular lightning surge protection apparatus |
| CN203774780U (en) * | 2014-02-28 | 2014-08-13 | 北京欧地安科技有限公司 | Signal surge protection device |
| CN205811537U (en) * | 2016-07-18 | 2016-12-14 | 重庆硕鼎电气设备有限公司 | Signal spark gap |
| CN207150262U (en) * | 2017-09-06 | 2018-03-27 | 广东电网有限责任公司佛山供电局 | A kind of cable terminal on-line monitoring system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210506 Address after: 243000 south of workshop 1, building 5, 2189, huxinan Road, Maanshan economic and Technological Development Zone, Maanshan City, Anhui Province Applicant after: Ma On Shan Penang Electronics Co.,Ltd. Address before: 518116 west side of 1st floor, building e, area a, Hongfa Science Park, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Bencent Electronics Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| CI02 | Correction of invention patent application |
Correction item: Applicant|Address Correct: Ma'anshan Penang Electronics Co.,Ltd.|243000 South of No. 1 Plant, Building 5, No. 2189, Huxinan Road, Ma'anshan Economic and Technological Development Zone, Ma'anshan City, Anhui Province False: Ma'anshan Penang Electronics Co.,Ltd.|243000 South of No. 1 Plant, Building 5, No. 2189, Huxinan Road, Ma'anshan Economic and Technological Development Zone, Ma'anshan City, Anhui Province Number: 20-02 Volume: 37 |
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| CI02 | Correction of invention patent application |