CN209435109U - Power supply change-over device - Google Patents
Power supply change-over device Download PDFInfo
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- CN209435109U CN209435109U CN201920018453.5U CN201920018453U CN209435109U CN 209435109 U CN209435109 U CN 209435109U CN 201920018453 U CN201920018453 U CN 201920018453U CN 209435109 U CN209435109 U CN 209435109U
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Abstract
The utility model relates to power module technical field more particularly to a kind of power supply change-over devices.Power supply change-over device includes shell and printed circuit board；Printed circuit board includes input board portion, power panel portion and output board portion, and input board portion is for installing input connector and input filter, and power panel portion is for installing DC-DC power module, and output board portion is for installing output filter and out connector；The first notch is offered between input board portion and power panel portion, and the second notch is offered between power panel portion and output board portion；Printed circuit board is installed inside the shell, and shell includes box body and cover board, and first partition and second partition are provided in box body, and shell, first partition and second partition are conductive structure；The bottom of first partition and second partition is connect with the bottom of box body, and top is each passed through the first notch and the second notch is abutted with cover board.Above-mentioned power supply change-over device Electro Magnetic Compatibility is high, occupies little space, and installation is simple, and ensure that transfer efficiency.
Description
Technical field
The utility model relates to power module technical field more particularly to a kind of power supply change-over devices.
Background technique
DC-DC power module is due to high, the small in size, reliable performance, easy to use and effectively shorten with power density
The remarkable advantages such as Related product R&D cycle, proving period are widely applied in military and industrial circle.
Switch is played in the inside of DC-DC power module and the MOSFET of rectified action works in high energy, high-speed switch state,
Therefore biggish electromagnetic interference can be generated, brings problems to the system where DC-DC power module.It is directed to DC/DC at present
There are two types of the main counter-measures of the electromagnetic compatibility problem of power module: one is soft switch techniques, to reduce electricity from source
Magnetic disturbance, however this measure can reduce power supply conversion efficiency, and higher cost；Another kind is using packaged type filter and envelope
The two, is then together in series using shielded wire by dress formula power module, and this measure encapsulates filter and power module respectively
Volume can be made to increase, and it is intermediate increased using shielded wire connection be additionally required processing part (such as: not only it should be noted that
The installation direction of routing of cable cannot be coupled with filter input end, and be also contemplated that the problem of how cable is tied up).
To sum up, how to overcome the drawbacks described above of existing DC-DC power module is that those skilled in the art are urgently to be resolved
Technical problem.
Utility model content
The purpose of this utility model is to provide a kind of power supply change-over devices, to alleviate DC-DC power source in the prior art
Module is existing while improving Electro Magnetic Compatibility, and power supply conversion efficiency reduces, cost increases or volume increases, it is numerous to handle
Trivial technical problem.
Power supply change-over device provided by the utility model, including shell and printed circuit board；
Wherein, the printed circuit board includes input board portion, power panel portion and output board portion, and the input board portion is for pacifying
Input connector and input filter are filled, for installing DC-DC power module, the output board portion is used in the power panel portion
Output filter and out connector be installed, the input connector, the input filter, the DC-DC power module,
The output filter and the out connector are sequentially connected electrically；It is offered between the input board portion and the power panel portion
First notch of strip offers the second notch of strip between the power panel portion and the output board portion.
The printed circuit board is mounted in the shell, and the shell includes box body and cover board, setting in the box body
There are first partition and second partition, the shell, the first partition and the second partition are conductive structure；Described first
The bottom of partition and the second partition is connect with the bottom of the box body, and the top of the first partition passes through described first
Notch is abutted with the cover board, and the top of the second partition passes through second notch and abuts with the cover board.
Preferably, as an embodiment, pass through between the input filter and the DC-DC power module
The electrical connection of first conducting wire, is electrically connected between the DC-DC power module and the output filter by the second conducting wire.
First notch is extended close to the position of first traverse layout, institute by the edge of the printed circuit board
State the position that the second notch is extended close to second traverse layout by the edge of the printed circuit board.
Preferably, as an embodiment, the box body is divided by the first partition and the second partition
Three cavitys, the cavity between the first partition and the second partition are located at for accommodating the DC-DC power module
The cavity of side of the first partition far from the second partition is for accommodating the input connector and the input filter
Device, the cavity of the side positioned at the second partition far from the first partition is for accommodating the output filter and described defeated
Connector out.
Preferably, as an embodiment, the top of the first partition and the top of the second partition are wrapped
Protrusion and recessed portion are included, the protrusion of the first partition passes through first notch and abuts with the cover board, and described second
The protrusion of partition passes through second notch and abuts with the cover board.
The plate face for laying first conducting wire is the first web portion, and the plate face for laying second conducting wire is the second connection
Plate portion；The depressed area of the first partition in first web portion underface and between first web portion
There are gap, the depressed area of the second partition in second web portion underface and with second web portion
Between there are gaps.
Preferably, as an embodiment, between the recessed portion of the first partition and first web portion
Gap of the gap size between 0.1mm-0.3mm, between the recessed portion of the second partition and second web portion
Size is between 0.1mm-0.3mm.
Preferably, as an embodiment, it is provided with the first U-type groove and the second U-type groove on the cover board, described
The protrusion of one partition passes through first notch and the first U type groove cooperates, and the protrusion of the second partition passes through institute
It states the second notch and the 2nd U type groove cooperates.
Preferably, as an embodiment, conduction is mounted in first U-type groove and the 2nd U type groove
Sealing strip, the protrusion of the first partition are abutted with the conductive seal article in the first U type groove, the second partition
Protrusion is abutted with the conductive seal item in second U-type groove.
Preferably, as an embodiment, the input connector and the out connector are metal structure,
And the input connector and the out connector connect with the close ring of the shell.
Preferably, as an embodiment, equal at the input pin and output pin of the DC-DC power module
It is provided with high-frequency filter circuit module.
Preferably, as an embodiment, the low frequency signal line of the input filter output end and the DC-
The low frequency signal line of DC power module input terminal is connected by the first screw-type feedthrough capacitor, the DC-DC power module output
The low frequency signal line at end is connected with the low frequency signal line of the output filter input terminal by the second screw-type feedthrough capacitor；Institute
It states the first screw-type feedthrough capacitor to be mounted in the first partition, the second screw-type feedthrough capacitor is mounted on described second
On partition.
Compared with the prior art, the advantages of the utility model are:
Power supply change-over device provided by the utility model, input filter can filter externally input interference signal
Wave prevents externally input interference signal from influencing the normal conversion work of DC-DC power module, meanwhile, input filter can also
The interference for preventing DC-DC power module from generating is flowed out by input connector along power supply line and interferes free surrounding space environment；Together
Reason, the signal after output filter can convert DC-DC power module are filtered, and prevent DC-DC power module from generating
Interference signal along power supply line by out connector flow out and interfere outer space environment, meanwhile, output filter can also be prevented
The normal conversion that only exterior space interferes DC-DC power module and influences DC-DC power module works, that is to say, that input
Filter and output filter, which can reduce, even is eliminated the Conduction Interference from external environment that DC-DC power module is subject to,
And the Conduction Interference that DC-DC power module generates external environment can be reduced.
Input board portion and power panel portion can be segmented in its two sides by the first partition for having conductive characteristic, and can with have
The DC-DC electric power source pair of module that the shell cooperation reduction of conductive characteristic is mounted on power panel portion is mounted on the input filter in input board portion
The space radiation interference of wave device, thus, the filter effect of input filter is improved, Conduction Interference is reduced；Has conductive characteristic
Output board portion and power panel portion can be segmented in its two sides by second partition, and can be reduced with the shell cooperation for having conductive characteristic
It is mounted on the space radiation interference of the DC-DC power module to the output filter for being mounted on output board portion in power panel portion, from
And the filter effect of output filter is improved, reduce Conduction Interference.In addition, having the first partition of conductive characteristic, second partition
It is matched with shell, preferable shielding action can be formed to DC-DC power module, reduce the DC-DC power module course of work
The electromagnetic wave of generation space radiation interference caused by exterior space improves the electromagnetic compatibility of DC-DC power module in turn
Property.
Therefore, power supply change-over device provided by the utility model improves the Electro Magnetic Compatibility of DC-DC power module, and
Because input connector, input filter, DC-DC power module, output filter and out connector are installed in same print
On circuit board processed, space is saved；And input connector, input filter, DC-DC power module, output filtering are installed
The printed circuit board of device and out connector is encapsulated in the shell being made of box body and cover board, simplifies installation process.
In addition, power supply change-over device provided by the utility model, does not use soft switch technique, therefore will not reduce DC-DC
The transfer efficiency of power module will not increase cost.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic cross-sectional view of power supply change-over device provided by the embodiment of the utility model；
Fig. 2 is the axis side structure schematic diagram of power supply change-over device cover plate provided by the embodiment of the utility model；
Fig. 3 is the axis side structure schematic diagram of printed circuit board in power supply change-over device provided by the embodiment of the utility model；
Fig. 4 is the axis side structure schematic diagram of box body in power supply change-over device provided by the embodiment of the utility model；
Fig. 5 is printed circuit board provided by the embodiment of the utility model and input connector mounted thereto, input
Filter, DC-DC power module, output filter, out connector, high-frequency filter circuit module assembling structure schematic diagram；
Fig. 6 is the partial cross structural representation of another sectional plane of power supply change-over device provided by the embodiment of the utility model
Figure；
Fig. 7 is the present invention looks up structural representation of upper cover plate provided by the embodiment of the utility model；
Fig. 8 is the configuration schematic diagram of another power supply change-over device provided by the embodiment of the utility model；
Fig. 9 is the schematic cross-sectional view of another power supply change-over device provided by the embodiment of the utility model, wherein the
One web portion and the second web portion are flexible structure.
Icon: 1- box body；2- cover board；3- printed circuit board；4- input connector；5- input filter；6-
DC-DC power module；7- output filter；8- out connector；9- high-frequency filter circuit module；
11- first partition；12- second partition；13- protrusion；14- recessed portion；The first screw-type of 15- punching electricity
Hold；16- the second screw-type feedthrough capacitor；
The first U-type groove of 21-；The second U-type groove of 22-；23- conductive seal item；
31- input board portion；32- power panel portion；33- output board portion；The first notch of 34-；The second notch of 35-；36-
First web portion；The second web portion of 37-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term "lower", "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
Referring to Fig. 1-Fig. 5, Fig. 8 and Fig. 9, a kind of power supply change-over device, including shell and printing electricity are present embodiments provided
Road plate 3.
Wherein, the printed circuit board 3 includes input board portion 31, power panel portion 32 and output board portion 33, the input board
Portion 31 is for installing input connector 4 and input filter 5, and the power panel portion 32 is for installing DC-DC power module 6, institute
Output board portion 33 is stated for installing output filter 7 and out connector 8, the input connector 4, the input filter 5,
The DC-DC power module 6, the output filter 7 and the out connector 8 are sequentially connected electrically；The input board portion 31
The first notch 34 that strip is offered between the power panel portion 32, between the power panel portion 32 and the output board portion 33
Offer the second notch 35 of strip.
The printed circuit board 3 is mounted in the shell, and the shell includes box body 1 and cover board 2, in the box body 1
It is provided with first partition 11 and second partition 12, the shell, the first partition 11 and the second partition 12 are conduction
Structure；The bottom of the first partition 11 and the second partition 12 is connect with the bottom of the box body 1, described first every
The top of plate 11 passes through first notch 34 and abuts with the cover board 2, and the top of the second partition 12 passes through described second
Notch 35 is abutted with the cover board 2.
Power supply change-over device provided in this embodiment, input filter 5 can filter externally input interference signal
Wave prevents externally input interference signal from influencing the normal conversion work of DC-DC power module 6, meanwhile, input filter 5
The interference that can also prevent DC-DC power module 6 from generating is flowed out by input connector 4 along power supply line and interferes free surrounding space ring
Border；Similarly, the signal after output filter 7 can convert DC-DC power module 6 is filtered, and prevents DC-DC power source mould
The interference signal that block 6 generates is flowed out by out connector 8 along power supply line and interferes outer space environment, meanwhile, output filtering
The normal conversion that device 7 can also prevent exterior space interference DC-DC power module 6 and influence DC-DC power module 6 works,
That is input filter 5 and output filter 7 can reduce even be eliminated that DC-DC power module 6 is subject to from outside
The Conduction Interference of environment, and the Conduction Interference that DC-DC power module 6 generates external environment can be reduced.
Input board portion 31 and power panel portion 32 can be segmented in its two sides by the first partition 11 for having conductive characteristic, and
It can be reduced with the shell cooperation for having conductive characteristic and be mounted on the DC-DC power module 6 in power panel portion 32 to being mounted on input
The space radiation interference of the input filter 5 in plate portion 31, thus, the filter effect of input filter 5 is improved, it is dry to reduce conduction
It disturbs；Output board portion 33 and power panel portion 32 can be segmented in its two sides by the second partition 12 for having conductive characteristic, and can be with tool
The shell cooperation of standby conductive characteristic, which reduces, is mounted on the DC-DC power module 6 in power panel portion 32 to being mounted on output board portion 33
Output filter 7 space radiation interference, thus, improve output filter 7 filter effect, reduce Conduction Interference.In addition,
First partition 11, second partition 12 and the shell for having conductive characteristic match, and can be formed to DC-DC power module 6 preferably
Shielding action, it is dry to reduce electromagnetic wave space caused by exterior space radiation that 6 course of work of DC-DC power module generates
It disturbs, in turn, improves the Electro Magnetic Compatibility of DC-DC power module 6.
Therefore, power supply change-over device provided in this embodiment improves the Electro Magnetic Compatibility of DC-DC power module 6, and
Because input connector 4, input filter 5, DC-DC power module 6, output filter 7 and out connector 8 are installed in together
On one piece of printed circuit board 3, space is saved；And input connector 4, input filter 5, DC-DC power module are installed
6, the printed circuit board 3 of output filter 7 and out connector 8 is encapsulated in the shell that one is made of box body 1 and cover board 2,
Simplify installation process.
In addition, power supply change-over device provided in this embodiment, does not use soft switch technique, therefore DC-DC electricity will not be reduced
The transfer efficiency of source module 6 will not increase cost.
The specific structure and technical effect of technical solution in relation to the present embodiment are as follows:
For ease of description, the conducting wire for connecting input filter 5 and DC-DC power module 6 is defined as the first conducting wire,
And the conducting wire for connecting DC-DC power module 6 and output filter 7 is defined as the second conducting wire.
Preferably, it referring to Fig. 3, sets the first notch 34 to extend to the first conducting wire cloth by the edge of printed circuit board 3
If position increase the length of the first notch 34 as much as possible that is, other than pan section needed for the first conducting wire, with reduce
The width of coupling part between input board portion 31 and power panel portion 32, thus, increase first partition 11 to 5 institute of input filter
Area of being isolated in space and 6 place space of DC-DC power module, reduces 6 place space of DC-DC power module and input is filtered
The institute of wave device 5 existing gap between the spaces, improves shielding action of the first partition 11 to DC-DC power module 6, further
Reduce the electromagnetic interference that DC-DC power module 6 generates input filter 5.
Similarly, it sets the second notch 35 to extending to the position of the second traverse layout by the edge of printed circuit board 3, i.e.,
Other than pan section needed for the second conducting wire, increase the length of the second notch 35 as much as possible, to reduce input board portion 31
The width of coupling part between power panel portion 32, thus, increase second partition 12 to 7 place space of output filter with
The isolation area in 6 place space of DC-DC power module reduces 6 place space of DC-DC power module and 7 institute of output filter
Existing gap between the spaces is improved shielding action of the second partition 12 to DC-DC power module 6, is further decreased
The electromagnetic interference that DC-DC power module 6 generates output filter 7.
Referring to fig. 4, box body 1 has been divided into three cavitys by first partition 11 and second partition 12, i.e. first partition 11
Both ends and the both ends of second partition 12 are connect with the side wall of box body 1；Wherein, the chamber between first partition 11 and second partition 12
For body for accommodating DC-DC power module 6, the cavity of the side positioned at first partition 11 far from second partition 12 is defeated for accommodating
Enter connector 4 and input filter 5, the cavity of the side positioned at second partition 12 far from first partition 11 is for accommodating output
Filter 7 and out connector 8.
Preferably, referring to fig. 4, the top of first partition 11 and the top of second partition 12 include protrusion 13 and recessed
Concave portion 14, wherein the protrusion 13 of first partition 11 can pass through the first notch 34 be abutted with cover board 2, second partition 12 it is convex
Portion 13 can pass through the second notch 35 and abut with cover board 2 out；For ease of description, the plate face for laying the first conducting wire is defined as the
The plate face for laying the second conducting wire is defined as the second web portion 37, by the recessed portion 14 of first partition 11 by one web portion 36
The underface of first web portion 36 is set, and between the recessed portion of first partition 11 14 and the first connecting plate between setting
Gap, with prevent it is conductive can first partition 11 and the first web portion 36 on the first conductive contact and influence shell and
Insulating properties between printed circuit board 3；Meanwhile by the recessed portion of second partition 12 14 be arranged in the second web portion 37 just under
Side, and gap is set between the recessed portion of second partition 12 14 and the second connecting plate, to prevent the second of conductive energy
Partition 12 and the second conductive contact in the second web portion 37 and influence the insulating properties between shell and printed circuit board 3.
Specifically, the gap size between the recessed portion 14 of first partition 11 and the first web portion 36 can be arranged
Between 0.1mm-0.3mm, and the gap size between the recessed portion of second partition 12 14 and the second web portion 37 is arranged
Between 0.1mm-0.3mm, thus, while guaranteeing insulating properties between printed circuit board 3 and shell, guarantee first partition
11 and second partition 12 to the shield effectiveness of DC-DC power module 6.
Preferably, the gap size between the recessed portion 14 of first partition 11 and the first web portion 36 can be set to
0.2mm, and 0.2mm is set by the gap size between the recessed portion of second partition 12 14 and the second web portion 37, to reach
To insulating properties between printed circuit board 3 and shell and the shielding of first partition 11 and second partition 12 to DC-DC power module 6
The balance of effect.
Preferably, referring to fig. 2, the first U-type groove 21 and the 2nd U type groove 22 can be set on cover board 2, so that first partition
11 protrusion 13 can cooperate after passing through the first notch 34 with the first U-type groove 21, and the protrusion 13 of second partition 12 is across the
It can cooperate with the second U-type groove 22 after two notches 35, thus, it is realized using the first U-type groove 21 and the second U-type groove 22 to
The limit of one partition 11 and second partition 12.
Further, referring to Fig. 7, conductive seal item 23 can be installed in the first U-type groove 21 and the second U-type groove 22, first
The protrusion 13 of partition 11 can be abutted with the conductive seal item 23 in the first U-type groove 21, the protrusion 13 of second partition 12 with
Conductive seal item 23 in second U-type groove 22 abuts, thus, first partition 11 and first are filled using conductive seal item 23
The conductive discontinuity point between conductive discontinuity point and second partition 12 and the 2nd U type groove 22 between U-type groove 21, thus,
The effectiveness after first partition 11 and second partition 12 cooperate with shell to DC-DC power module 6 is improved, further
Reduce influence of the DC-DC power module 6 to the filter effect of input filter 5 and output filter 7.
Preferably, input connector 4 and out connector 8 are disposed as metal structure, and by input connector 4 and defeated
Connector 8 connects with the close ring of shell out, thus, reduce the position that input connector 4 and out connector 8 are connected on shell
The hole that electromagnetic leakage easily occurs, improves the effectiveness of shell, reduces exterior space and turns to power supply provided in this embodiment
The electromagnetic interference of changing device, meanwhile, power supply change-over device provided in this embodiment is reduced to the electromagnetism spoke of exterior space
Blackberry lily is disturbed.
In addition, being respectively provided with High frequency filter electricity at the input pin and output pin of DC-DC power module 6 referring to Fig. 5
Road module 9, to be filtered using high-frequency filter circuit module 9 to DC-DC power module 6, the high frequency reduced on power supply line is made an uproar
Sound.
Referring to Fig. 6, since the spacing electromagnetic radiation of DC-DC power module 6 interferes, causing also can coupling on low frequency signal line
Closing High-frequency Interference therefore can be low with 6 input terminal of DC-DC power module by the low frequency signal line of 5 output end of input filter
Frequency signal wire by the first screw-type feedthrough capacitor 15 be connected, and by the low frequency signal line of 6 output end of DC-DC power module with
The low frequency signal line of 7 input terminal of output filter is connected by the second screw-type feedthrough capacitor 16, to realize to low frequency signal
High frequency filter on line；First screw-type feedthrough capacitor 15 can be mounted in first partition 11, and by the second screw-type punching
Capacitor 16 is mounted on second partition 12, to realize fixation.
In conclusion the utility model embodiment discloses a kind of power supply change-over device, which overcome traditional DC-DC
Many technological deficiencies of power module.Power supply change-over device provided by the embodiment of the utility model, Electro Magnetic Compatibility is high, occupies empty
Between it is small, installation is simple, and ensure that transfer efficiency.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is practical new in this
Within the scope of type and form different embodiments.For example, in claims above, embodiment claimed
It is one of any can in any combination mode come using.The information disclosed in the background technology section is intended only to deepen
Understanding to the general background technology of the utility model, and be not construed as recognizing or implying in any form that the information is constituted
The prior art known to those skilled in the art.In addition, it will be appreciated by those of skill in the art that although described herein
Some embodiments include certain features included in other embodiments rather than other feature, but the spy of different embodiments
The combination of sign means within the scope of the utility model and forms different embodiments.For example, in right above
In claim, embodiment claimed it is one of any can in any combination mode come using.It is disclosed in the back
The information of scape technology segment is merely intended to deepen the understanding to the general background technology of the utility model, and is not construed as holding
Recognize or implies that the information constitutes the prior art known to those skilled in the art in any form.
Claims (10)
1. a kind of power supply change-over device, which is characterized in that including shell and printed circuit board；
Wherein, the printed circuit board includes input board portion, power panel portion and output board portion, and the input board portion is defeated for installing
Enter connector and input filter, the power panel portion is for installing DC-DC power module, and the output board portion is for installing
Output filter and out connector, it is the input connector, the input filter, the DC-DC power module, described
Output filter and the out connector are sequentially connected electrically；Strip is offered between the input board portion and the power panel portion
The first notch, the second notch of strip is offered between the power panel portion and the output board portion；
The printed circuit board is mounted in the shell, and the shell includes box body and cover board, and is provided in the box body
One partition and second partition, the shell, the first partition and the second partition are conductive structure；The first partition
It is connect with the bottom of the box body with the bottom of the second partition, the top of the first partition passes through first notch
It is abutted with the cover board, the top of the second partition passes through second notch and abuts with the cover board.
2. power supply change-over device according to claim 1, which is characterized in that the input filter and DC-DC electricity
It is electrically connected between source module by the first conducting wire, is led between the DC-DC power module and the output filter by second
Line electrical connection；
First notch is extended close to the position of first traverse layout by the edge of the printed circuit board, and described
Two notches are extended close to the position of second traverse layout by the edge of the printed circuit board.
3. power supply change-over device according to claim 2, which is characterized in that the first partition and the second partition will
The box body is divided into three cavitys, and the cavity between the first partition and the second partition is for accommodating the DC-DC
Power module, the cavity of the side positioned at the first partition far from the second partition for accommodate the input connector and
The input filter, the cavity of the side positioned at the second partition far from the first partition is for accommodating the output filter
Wave device and the out connector.
4. power supply change-over device according to claim 3, which is characterized in that the top of the first partition and described second
The top of partition includes protrusion and recessed portion, and the protrusion of the first partition passes through first notch and the cover board
It abuts, the protrusion of the second partition passes through second notch and abuts with the cover board；
The plate face for laying first conducting wire is the first web portion, and the plate face for laying second conducting wire is the second connecting plate
Portion；The depressed area of the first partition in first web portion underface and deposited between first web portion
In gap, the depressed area of the second partition in second web portion underface and with second web portion it
Between there are gaps.
5. power supply change-over device according to claim 4, which is characterized in that the recessed portion of the first partition and described the
Between 0.1mm-0.3mm, the recessed portion of the second partition is connect gap size between one web portion with described second
Gap size between plate portion is between 0.1mm-0.3mm.
6. power supply change-over device according to claim 4, which is characterized in that be provided on the cover board the first U-type groove and
Second U-type groove, the protrusion of the first partition passes through first notch and first U-type groove cooperates, described second every
The protrusion of plate passes through second notch and second U-type groove cooperates.
7. power supply change-over device according to claim 6, which is characterized in that first U-type groove and second U-type groove
It is inside mounted on conductive seal item, the protrusion of the first partition is abutted with the conductive seal item in first U-type groove, institute
The protrusion for stating second partition is abutted with the conductive seal item in second U-type groove.
8. power supply change-over device according to claim 1-7, which is characterized in that the input connector and institute
Stating out connector is metal structure, and the input connector and the out connector connect with the close ring of the shell.
9. power supply change-over device according to claim 1-7, which is characterized in that the DC-DC power module
Input pin and output pin at be provided with high-frequency filter circuit module.
10. power supply change-over device according to claim 1-7, which is characterized in that the input filter output
The low frequency signal line at end and the low frequency signal line of the DC-DC power module input terminal pass through the first screw-type feedthrough capacitor phase
Even, the low frequency signal line of the DC-DC power module output end and the low frequency signal line of the output filter input terminal pass through
Second screw-type feedthrough capacitor is connected；The first screw-type feedthrough capacitor is mounted in the first partition, second spiral shell
Line formula feedthrough capacitor is mounted on the second partition.
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| CN109510455A (en) * | 2019-01-04 | 2019-03-22 | 武汉海达数云技术有限公司 | Power supply change-over device |
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