CN209516941U - A kind of boat-carrying power supply change-over device - Google Patents
A kind of boat-carrying power supply change-over device Download PDFInfo
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- CN209516941U CN209516941U CN201920426536.8U CN201920426536U CN209516941U CN 209516941 U CN209516941 U CN 209516941U CN 201920426536 U CN201920426536 U CN 201920426536U CN 209516941 U CN209516941 U CN 209516941U
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Abstract
The utility model discloses a kind of boat-carrying power supply change-over devices; including sequentially connected voltage input module; overvoltage protective module, voltage-dropping type constant current constant voltage control module and rectification filtering module, the voltage-dropping type constant current constant voltage control module are made of constant current constant voltage chip U1 and resistance R5.Boat-carrying power supply change-over device power input pressure resistance range described in the utility model is wide, directly convert direct current into direct current, voltage and current output is constant adjustable, not only overvoltage ability to bear greatly promotes, electronic operating failure rate peculiar to vessel is reduced, and calorific value is small, greatly reduces energy consumption, it is small in size cheap, convenient for promoting.
Description
Technical field
The utility model relates to field of power supplies more particularly to a kind of boat-carrying power supply change-over devices.
Background technique
Power adapter refers to that the power supply by a certain voltage class is converted into the device of the power supply of other voltage class.
At present boat-carrying with power adapter need first by marine electric DC12-24V be converted to AC220V then again by mobile phone or
Voltage needed for AC220V is changed into electronics electrical appliance peculiar to vessel again by person's electronic equipment power source converter, multiple conversions, energy benefit
It is not high with rate.Ship-borne equipment is mainly generated electricity by large-scale diesel engine, and diesel engine powers transient voltage (can reach DC60V) usually can be big
In the input ceiling voltage (pressure-resistant 30V) of conventional power source converter, service life can be very on ship for conventional power source converter
It is short, it is easy to be burnt out by moment big voltage, to influence device by ship use, there are security risks.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of power supply converting means proposed
It sets.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of boat-carrying power supply change-over device, including sequentially connected voltage input module, overvoltage protective module, voltage-dropping type are permanent
Isobarically Control module and rectification filtering module are flowed, the voltage-dropping type constant current constant voltage control module is by constant current constant voltage chip U1 and resistance
R5 composition, the power input 1 of the constant current constant voltage chip U1 are connect with external power supply, the feedback of the constant current constant voltage chip U1
The positive sampling end 3 of voltage, the negative sampling end 4 of feedback voltage and chip ground terminal 6 are shorted and by the resistance R5 and the constant current constant voltages
The inductive current detection resistance anode 8 of chip U1 connects, the inductive current detection resistance anode 8 of the constant current constant voltage chip U1 with
Inductive current detection resistance negative terminal 7 is shorted.
Preferably, the voltage-dropping type constant current constant voltage control module further includes resistance R1, resistance R2, resistance R3, resistance R4, institute
The one end for stating resistance R1 and resistance R3 is connect with the positive sampling end 3 of feedback voltage of the constant current constant voltage chip U1, the resistance
One end of R2 and resistance R4 are connect with the negative sampling end 4 of feedback voltage of the constant current constant voltage chip U1, the resistance R1 and electricity
The other end of resistance R2 with the chip of the constant current constant voltage chip U1 6 is connect, and the resistance R3 mono- terminates the constant current constant voltage
The load high potential end of the positive sampling end 3 of the feedback voltage of chip U1, the other end and rectification filtering module connects, the resistance R4 mono-
End is connect with the negative sampling end 4 of feedback voltage of the constant current constant voltage chip U1, other end ground connection.
Preferably, the numerical value of the resistance R1 and resistance R2 is equal, and the numerical value of the resistance R3 and resistance R4 are equal.
Preferably, the overvoltage protective module is made of diode D1, diode D3, capacitor C2, capacitor C3 and resistance R7,
The external power supply is connect by resistance R7 with the power end 2 of the constant current constant voltage chip U1, the diode D3 cathode termination
The power end 2 of the constant current constant voltage chip U1, positive terminal are connected by the capacitor C3 and the constant current constant voltage chip U1 output end 5
It connects, the capacitor C2 is in parallel with the diode D3, the chip of the diode D3 positive terminal and the constant current constant voltage chip U1
Ground 6 connects, and the negative pole end of the diode D1 is connect with the constant current constant voltage chip U1 output end 5, positive terminal and rectifying and wave-filtering
The load high potential end of module connects.
Preferably, the diode D3 is Xiao Jite diode.
Preferably, the rectification filtering module is made of inductance L, diode D2 and resistance R6, and the inductance L mono- terminates institute
Constant current constant voltage chip U1 chip ground terminal 6 is stated, the other end is connect with the load high potential end of the rectification filtering module, two pole
The positive terminal of pipe D2 is connected to ground, and negative pole end is connect with the inductive current detection resistance anode 8 of the constant current constant voltage chip U1, institute
It states the one end resistance R6 to connect with the load high potential end of the rectification filtering module, other end ground connection.
Preferably, the rectification filtering module further includes capacitor C4, and the capacitor C4 is in parallel with the resistance R6.
Preferably, the numerical value of the inductance L is between 33uH-100uH.
Preferably, the external power supply is grounded by capacitor C1.
Preferably, the constant current constant voltage chip U1 uses PWM control mode, switching frequency 140kHz.
Boat-carrying power supply change-over device power input pressure resistance range described in the utility model is wide, directly converts direct current
At direct current, voltage and current output is constant adjustable, and not only overvoltage ability to bear greatly promotes, and reduces electronic equipment event peculiar to vessel
Barrier rate, and calorific value is small, greatly reduces energy consumption, it is small in size cheap, convenient for promoting.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of boat-carrying power supply change-over device provided by the utility model；
Fig. 2 is a kind of module map of boat-carrying power supply change-over device provided by the utility model；
Fig. 3 is the schematic diagram of another boat-carrying power supply change-over device provided by the utility model；
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
As shown in Figs. 1-2, the utility model provides a kind of boat-carrying power supply change-over device, including sequentially connected voltage input
Module 1, overvoltage protective module 2, voltage-dropping type constant current constant voltage control module 3 and rectification filtering module 4, the voltage-dropping type constant current constant voltage
Control module 3 is made of constant current constant voltage chip U1 and resistance R5, the power input 1 and external electricity of the constant current constant voltage chip U1
Source connection, the positive sampling end 3 of feedback voltage, the negative sampling end 4 of feedback voltage and the chip ground terminal 6 of the constant current constant voltage chip U1 are shorted
And it is connect by the resistance R5 with the inductive current detection resistance anode 8 of the constant current constant voltage chip U1, the constant current constant voltage
The inductive current detection resistance anode 8 and inductive current detection resistance negative terminal 7 of chip U1 is shorted.
In the utility model embodiment, external power supply passes through the voltage input module 1 and the overvoltage protective module 2
After overvoltage is handled, then through the progress power supply conversion of voltage-dropping type constant current constant voltage control module 3, the voltage or electric current exported after conversion
Rectifying and wave-filtering is carried out through the rectification filtering module 4, the direct current for finally exporting constant voltage and/or constant current makes to load
With.The external power supply is DC power supply, the preferred 8-60V of input voltage range.
Divider resistance is set in the positive sampling end 3 of feedback voltage and negative sampling end 4 of the constant current constant voltage chip U1, by right
The resistance value of the divider resistance, which is adjusted, can preferably realize the electricity of the output to the output end 5 of the constant current constant voltage chip U1
The adjusting of pressure value, and the output voltage values for setting the output end 5 of the rear constant current constant voltage chip U1 are fixed value.
In the utility model embodiment, the maximum current value of the constant current constant voltage chip U1 output can pass through institute
It states resistance R5 to be adjusted, for example, it is assumed that the chip ground terminal 6 and inductive current detection resistance anode of the constant current constant voltage chip U1
8 voltage difference is 150mV, and the resistance value of the resistance R5 is 100m Ω, then exports current limit Imax=150mV/100m Ω
=1.5A.
In order to preferably realize voltage conversion function described in the utility model, the model of the constant current constant voltage chip U1 is excellent
It is selected as H6205, H6205 is the controller for supporting the switching buck DC-DC of Width funtion input, the high pressure of built-in 100V-17A
Mos, maximum input voltage may be up to 80V.H6205 supports output constant pressure and output constant current, the controller to be internally integrated simultaneously
Soft start and thermal-shutdown circuit, output short circuit protection, the functions such as current-limiting protection improve system reliability.The controller
With characteristics such as low standby power loss, high efficiency, low ripple, excellent busbar voltage regulation and load regulations.
In conclusion boat-carrying power supply change-over device power input pressure resistance range described in the utility model is wide, directly
Direct current is converted direct current into, voltage and current output is constant adjustable, and not only overvoltage ability to bear greatly promotes, and reduces peculiar to vessel
Electronic operating failure rate, and calorific value is small, greatly reduces energy consumption, it is small in size cheap, convenient for promoting.
Preferably, as shown in figure 3, in order to preferably realize that the adjusting control to output voltage, the voltage-dropping type constant current are permanent
Press control module 3 can also include resistance R1, resistance R2, resistance R3, resistance R4, the resistance R1 and resistance R3 one end with
The positive sampling end 3 of the feedback voltage of the constant current constant voltage chip U1 connects, one end of the resistance R2 and resistance R4 with the perseverance
The negative sampling end 4 of feedback voltage for flowing constant pressure chip U1 connects, and the other end of the resistance R1 and resistance R2 are permanent with the constant current
6 connections, the resistance R3 mono- terminate the positive sampling end 3 of feedback voltage of the constant current constant voltage chip U1 with pressing the chip of chip U1,
The other end is connect with the load high potential end of rectification filtering module 4, and the one end the resistance R4 is with the constant current constant voltage chip U1's
The negative sampling end 4 of feedback voltage connects, other end ground connection.
In the utility model embodiment, the work input voltage range of the constant current constant voltage chip U1 is 8-60V, is passed through
Resistance R1 and R3 are accessed in the positive sampling end 3 of the feedback voltage of the constant current constant voltage chip U1, is accessed in the negative sampling end 4 of feedback voltage
Resistance R2, R4, and by the way that the resistance R1, R2, R3, the numerical value of R4 is configured adjustment, it realizes to the constant current constant voltage core
The output voltage values of the output end 5 of piece U1 are adjusted flexibly, and output voltage is constant, and range is adjustable from 4V to 30V.
Preferably, for the ease of the adjustment of the output voltage values of the output end 5 to the constant current constant voltage chip U1, the electricity
The numerical value for hindering R1 and resistance R2 is equal, and the numerical value of the resistance R3 and resistance R4 are equal.It can as those of ordinary skill in the art
Know, the relationship between resistance value described in the utility model is only because of the numerical value phase in the resistance R1 and resistance R2
Deng, when the numerical value of the resistance R3 and resistance R4 are equal voltage adjustment it is more convenient, practicability is preferable, the resistance value of other forms
The output voltage values that relationship also can be achieved on the output end 5 described in the utility model to the constant current constant voltage chip U1 carry out
Adjustment.Preferably, the resistance R1, resistance R2, resistance R3, resistance R4 select the resistance of 1% precision.
Preferably, the overvoltage protective module 2 is by diode D1, diode D3, capacitor C2, capacitor C3 and resistance R7 group
At the external power supply is connect by resistance R7 with the power end 2 of the constant current constant voltage chip U1, the diode D3 negative pole end
The power end 2 of the constant current constant voltage chip U1 is connect, positive terminal passes through the capacitor C3 and the constant current constant voltage chip U1 output end 5
Connection, the capacitor C2 is in parallel with the diode D3, the core of the diode D3 positive terminal and the constant current constant voltage chip U1
6 connections of piece ground, the negative pole end of the diode D1 connect with the constant current constant voltage chip U1 output end 5, positive terminal with rectify filter
The load high potential end of wave module 4 connects.When the positive sampling end 3 of feedback voltage and negative sampling end 4 of the constant current constant voltage chip U1
When being not connected with the resistance R1, resistance R2, resistance R3, resistance R4, the preferred 22uF/6V of the parameter of the C2；When the constant current is permanent
When the positive sampling end 3 of feedback voltage of chip U1 and negative sampling end 4 being pressed to connect the resistance R1, resistance R2, resistance R3, resistance R4,
The preferred 4.7uF/16V of the parameter of the C2.
In the utility model embodiment, external power supply is formed after being filtered by the over-voltage protection module, spike electricity
The overvoltage such as pressure or interference voltage are absorbed by the overvoltage module, recently enter the power end of the constant current constant voltage chip U1
2 voltage is more stable, can effectively prevent the constant current constant voltage chip U1 and is damaged by the overvoltage of external power supply, improves reliable
Property.
Preferably, in order to improve the performance of boat-carrying power supply change-over device described in the utility model, the overvoltage protection mould
The diode D3 of block 2 selects Xiao Jite diode.Such diode switch frequency height and forward conduction voltage drop are low, and only 0.4V is left
The right side, reverse recovery time are extremely short (may diminish to several nanoseconds).
Preferably, the rectification filtering module 4 is made of inductance L, diode D2 and resistance R6, and the inductance L mono- is terminated
The constant current constant voltage chip U1 chip ground terminal 6, the other end is connect with the load high potential end of the rectification filtering module 4, described
The positive terminal of diode D2 is connected to ground, and the inductive current detection resistance anode 8 of negative pole end and the constant current constant voltage chip U1 connect
It connects, the one end the resistance R6 is connect with the load high potential end of the rectification filtering module 4, other end ground connection.
In the utility model embodiment, what the rectification filtering module 4 was used to export the constant current constant voltage chip U1
Voltage is rectified and is filtered, and after obtaining the more stable and higher voltage of reliability, then is powered to the load.
Preferably, as shown in figure 3, the rectification of the rectification filtering module 4 and filtering performance in order to better improve, in institute
It is in parallel with the resistance R6 to state setting capacitor C4, the capacitor C4 in rectification filtering module 4.
Preferably, in order to improve the efficiency of boat-carrying power supply change-over device described in the utility model, the numerical value of the inductance L
Between 33uH-100uH, the inductance value of this range can get small ripple current, help to improve efficiency.
Preferably, it is contemplated that boat-carrying diesel-driven generator power supply transient voltage can reach DC60V, and harmonic wave and overvoltage are more,
Voltage is highly unstable, and in order to reinforce to the anti-interference of external power supply, the external power supply also passes through capacitor C1 and is grounded, further
Filter overvoltage.
Boat-carrying power supply change-over device described in the utility model carries out power supply conversion using the PWM control mode of fixed frequency,
In order to control the power supply conversion efficiency of described device in preferable horizontal, reduction switching loss, the preferred 140kHz of switching frequency,
Switching frequency can also be reduced at light load to obtain higher transfer efficiency
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (10)
1. a kind of boat-carrying power supply change-over device, which is characterized in that including sequentially connected voltage input module, overvoltage protection mould
Block, voltage-dropping type constant current constant voltage control module and rectification filtering module, the voltage-dropping type constant current constant voltage control module is by constant current constant voltage
Chip U1 and resistance R5 composition, the power input 1 of the constant current constant voltage chip U1 are connect with external power supply, the constant current constant voltage
The positive sampling end 3 of the feedback voltage of chip U1, the negative sampling end 4 of feedback voltage and chip ground terminal 6 be shorted and by the resistance R5 with
The inductive current detection resistance anode 8 of the constant current constant voltage chip U1 connects, the inductive current inspection of the constant current constant voltage chip U1
Measuring resistance anode 8 and inductive current detection resistance negative terminal 7 are shorted.
2. boat-carrying power supply change-over device according to claim 1, which is characterized in that the voltage-dropping type constant current constant voltage controls mould
Block further include resistance R1, resistance R2, resistance R3, resistance R4, the resistance R1 and resistance R3 one end with the constant current constant voltage
The positive sampling end 3 of the feedback voltage of chip U1 connects, one end of the resistance R2 and resistance R4 with the constant current constant voltage chip U1
The negative sampling end 4 of feedback voltage connect, core of the other end of the resistance R1 and resistance R2 with the constant current constant voltage chip U1
Piece 6 connections, the resistance R3 mono- terminate the positive sampling end 3 of feedback voltage of the constant current constant voltage chip U1, the other end and rectification
The load high potential end of filter module connects, the negative sampling of the feedback voltage of the one end the resistance R4 and the constant current constant voltage chip U1
4 connection of end, other end ground connection.
3. boat-carrying power supply change-over device according to claim 2, which is characterized in that the numerical value of the resistance R1 and resistance R2
Equal, the numerical value of the resistance R3 and resistance R4 are equal.
4. boat-carrying power supply change-over device according to claim 1, which is characterized in that the overvoltage protective module is by diode
D1, diode D3, capacitor C2, capacitor C3 and resistance R7 composition, the external power supply pass through resistance R7 and the constant current constant voltage core
The power end 2 of piece U1 connects, and the diode D3 cathode terminates the power end 2 of the constant current constant voltage chip U1, and positive terminal passes through
The capacitor C3 is connect with the constant current constant voltage chip U1 output end 5, and the capacitor C2 is in parallel with the diode D3, and described two
Pole pipe D3 positive terminal with the chip of the constant current constant voltage chip U1 6 is connect, the negative pole end of the diode D1 and the constant current
Constant pressure chip U1 output end 5 connects, and the load high potential end of positive terminal and rectification filtering module connects.
5. boat-carrying power supply change-over device according to claim 4, which is characterized in that the diode D3 is bis- pole Xiao Jite
Pipe.
6. boat-carrying power supply change-over device according to claim 1, which is characterized in that the rectification filtering module by inductance L,
Diode D2 and resistance R6 composition, the inductance L mono- terminate the constant current constant voltage chip U1 chip ground terminal 6, the other end with it is described
The load high potential end of rectification filtering module connects, and the positive terminal of the diode D2 is connected to ground, negative pole end and the constant current
The inductive current detection resistance anode 8 of constant pressure chip U1 connects, the load of the one end the resistance R6 and the rectification filtering module
The connection of high potential end, other end ground connection.
7. boat-carrying power supply change-over device according to claim 6, which is characterized in that the rectification filtering module further includes electricity
Hold C4, the capacitor C4 is in parallel with the resistance R6.
8. boat-carrying power supply change-over device according to claim 6, which is characterized in that the numerical value of the inductance L is in 33uH-
Between 100uH.
9. boat-carrying power supply change-over device according to claim 1, which is characterized in that the external power supply is connect by capacitor C1
Ground.
10. boat-carrying power supply change-over device according to claim 1, which is characterized in that the constant current constant voltage chip U1 is used
PWM control mode, switching frequency 140kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920426536.8U CN209516941U (en) | 2019-03-29 | 2019-03-29 | A kind of boat-carrying power supply change-over device |
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| CN201920426536.8U CN209516941U (en) | 2019-03-29 | 2019-03-29 | A kind of boat-carrying power supply change-over device |
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| CN209516941U true CN209516941U (en) | 2019-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818496A (en) * | 2019-03-29 | 2019-05-28 | 深圳市鑫中瑞电子科技有限公司 | A kind of boat-carrying power supply change-over device |
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2019
- 2019-03-29 CN CN201920426536.8U patent/CN209516941U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818496A (en) * | 2019-03-29 | 2019-05-28 | 深圳市鑫中瑞电子科技有限公司 | A kind of boat-carrying power supply change-over device |
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