CN209200939U - A kind of high voltage and high power density DC power supply - Google Patents
A kind of high voltage and high power density DC power supply Download PDFInfo
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- CN209200939U CN209200939U CN201822254379.5U CN201822254379U CN209200939U CN 209200939 U CN209200939 U CN 209200939U CN 201822254379 U CN201822254379 U CN 201822254379U CN 209200939 U CN209200939 U CN 209200939U
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Abstract
The utility model discloses a kind of high voltage and high power density DC power supplies, including input filter and surge restraint circuit, input detecting circuit, DC-DC DC transfer circuit, output filter circuit, output detection circuit, single chip machine controlling circuit and auxiliary power circuit, it is electric connection between the input terminal of the output terminal and input detecting circuit of the input filter and surge restraint circuit, and the input terminal of the connection terminal access DC-DC DC transfer circuit of input detecting circuit, the input terminal of the output terminal access output filter circuit of the DC-DC DC transfer circuit.The high voltage and high power density DC power supply is provided with single chip machine controlling circuit, 144KB FLASH program space 8K internal RAM memory wide operating voltage range 2.5~5.5V instruction cycle, which is up to 30MHz, in the 16 bit wide data/address bus piece of C language compiler instruction set architecture of optimization to facilitate the debugging of software and program to download with in-circuit emulation and programming.
Description
Technical field
The utility model relates to technical field of direct current power, specially a kind of high voltage and high power density DC power supply.
Background technique
DC power supply is the device that constant voltage electric current is formed in holding circuit, such as dry cell, battery, DC generation
Machine etc., wherein high voltage and high power density DC power supply is the concentration converting means of system load power supply, and main function is by carrier aircraft
Direct current 270V power supply is converted into direct current 28V, powers for system load, and realize electricity consumption state monitoring and management defencive function, product
Self-checking function.
Circuit in the market is unable to get better ripple and noise suppressed, and the output of high-voltage DC power supply is not also set
In respect of dedicated filter circuit, so that the problem of stability that circuit uses also greatly declines, for this purpose, it is proposed that one
Kind high voltage and high power density DC power supply.
Utility model content
The purpose of this utility model is to provide a kind of high voltage and high power density DC power supplies, to solve above-mentioned background technique
The circuit of middle proposition is unable to get better ripple and noise suppressed, and the output of high-voltage DC power supply be also not designed with it is dedicated
Filter circuit so that the problem of stability that circuit uses also greatly declines.
To achieve the above object, the utility model provides the following technical solutions: a kind of high voltage and high power density DC power supply,
It is examined including input filter and surge restraint circuit, input detecting circuit, DC-DC DC transfer circuit, output filter circuit, output
The output terminal of slowdown monitoring circuit, single chip machine controlling circuit and auxiliary power circuit, the input filter and surge restraint circuit with it is defeated
Enter to be electrically connected between the input terminal of detection circuit, and the connection terminal of input detecting circuit accesses DC-DC DC converting
The input terminal of circuit, the input terminal of the output terminal access output filter circuit of the DC-DC DC transfer circuit, and it is defeated
Out to be electrically connected between the connection terminal of filter circuit and the connection terminal of output detection circuit, the output detection circuit
Output terminal accesses the input terminal of single chip machine controlling circuit, the output terminal access of the input filter and surge restraint circuit
The output terminal of auxiliary power circuit.
Preferably, the DC-DC DC transfer circuit includes electrolytic capacitor C1, C2, C3, metal-oxide half field effect transistor M1,
M2, M3, M4, inductance K1, K2, T2, transformer T1, resistor K3, and to be sequentially connected in series between C1, C2, M1, M2, and
One end of the series connection access T1 of C1, C2, and the other end of M1, M2 series connection access T1.
Preferably, one end of one end series connection access K1 of the M3, and one end of the other end series connection access M4 of M3, and
One end of the other end series connection access K2 of M4, and the other end of the other end access K1 of K2, while C3 and K3 parallel connection accesses K1
Connection terminal.
Preferably, the input detecting circuit include direct current 270V, electric resistance partial pressure, amplifier follow, A/D conversion chip, 12V
Isolation, amplifier are with amiable anode current Hall, and direct current 270V, electric resistance partial pressure, amplifier follow, A/D conversion chip is isolated with 12V
Between to be sequentially connected in series structure, and anode current Hall, amplifier follow A/D conversion chip be isolated with 12V between be successively to go here and there
It is coupled structure.
Preferably, the output filter circuit includes electrolytic capacitor C4, C6, capacitor C5, C7, altogether film inductor L1, and C4, C6
One end and C5, C7 one end access L1 in parallel one end, and the other end of the other end of C4, C6 and C5, C7 and couple
Enter the other end of L1.
Compared with prior art, the utility model has the beneficial effects that
1, the high voltage and high power density DC power supply is according to the configuration requirement of system load, take into account airborne finished-product volume with again
Amount, high-voltage DC power supply use modularized design, and rated power 3.6KW gives system power supply, while this high-voltage DC power supply is
DC converter based on isolated form DC/DC converter technique is its working principle is that pass through DC/DC for the high voltage direct current of input
The topological structure of DC transfer circuit is converted into DC28V output, and realizes that overcurrent protection, over-voltage are protected in the process of conversion
Shield, overheating protection and short-circuit protection function, and add synchronous rectification to be the DC/DC DC transfer circuit of technical foundation based on half-bridge
Topological structure, the high-power DC power supply suitable for high voltage input is its advantage is that under nominal operating conditions, high conversion efficiency
Up to 95% or more, circuit structure is relatively easy, has good Electro Magnetic Compatibility and very high power density, and high voltage direct current
Input detection includes input voltage measurement and input electric cur- rent measure direct current 270V voltage by electric resistance partial pressure, and amplifier is with subsequently inputting
It is converted to A/D；
2, current signal is that current signal is carried out isolation sampling by current Hall sensor, and amplifier is with being subsequently inputted into
A/D conversion circuit, and output detection circuit is mainly the voltage and current for detecting output, by single chip circuit by the defeated of power supply
Do well real-time report, and better ripple and noise suppressed in order to obtain, and the output design of high-voltage DC power supply has dedicated
Filter circuit output filtering be all made of patch polymer capacitor+patch thin-film capacitor+ultracrystallite common mode inductance and be filtered, and
Single chip circuit contains clock circuit and watchdog circuit, is that the core of high-voltage DC power supply data processing and control is responsible for electricity
The switching on and shutting down in source control, data acquisition process, carry out the task such as communicating by CAN interface and host computer, and single-chip microcontroller is selected
DsPIC30F6012A, integrated level is high, has flexible addressing mode, the C language compiler instruction set frame of optimization using CMOS technology
144KB FLASH program space 2.5~5.5V of 8K internal RAM memory wide operating voltage range refers in 16 bit wide data/address bus piece of structure
Enabling the period be up to 30MHz can facilitate the debugging of software and program to download with in-circuit emulation and programming.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram；
Fig. 2 is the utility model circuit topological structure circuit diagram；
Fig. 3 is the utility model input detecting circuit figure；
Fig. 4 is the utility model DC/DC DC transfer circuit figure；
Fig. 5 is the utility model output filter circuit figure.
In figure: S1-- input filter and surge restraint circuit；S2-- input detecting circuit；S3--DC-DC DC converting electricity
Road；S4-- output filter circuit；S5-- output detection circuit；S6-- single chip machine controlling circuit；S7-- auxiliary power circuit.
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.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-5 is please referred to, the utility model provides a kind of technical solution: a kind of high voltage and high power density DC power supply, packet
It includes input filter and surge restraint circuit, input detecting circuit, DC-DC DC transfer circuit, output filter circuit, output detects
Circuit, single chip machine controlling circuit and auxiliary power circuit, the output terminal and input of the input filter and surge restraint circuit
To be electrically connected between the input terminal of detection circuit, and the connection terminal access DC-DC DC converting electricity of input detecting circuit
The input terminal on road, the input terminal of the output terminal access output filter circuit of the DC-DC DC transfer circuit, and export
Between the connection terminal of filter circuit and the connection terminal of output detection circuit for be electrically connected, the output detection circuit it is defeated
The output terminal access of the input terminal of terminal access single chip machine controlling circuit out, the input filter and surge restraint circuit is auxiliary
Help the output terminal of power circuit；
Example 1:
(1) input: direct current 270V meets GJB181B-2012 power reguirements；
B) it exports:
Output voltage: DC28V；
Voltage accuracy :≤± 1%；
Output power: 3600W；
Voltage regulation factor :≤0.5%；
Load regulation :≤1%；
Ripple factor :≤1%；
C) transfer efficiency: >=95%
D) insulation resistance: input is to shell DC1000V insulation resistance > 200M Ω；
Input is to output DC1000V insulation resistance > 200M Ω；
Output is to shell DC500V insulation resistance > 200M Ω；
E) operating ambient temperature: -55 DEG C~+70 DEG C；
(2) a) carrier aircraft direct current 270V is converted into direct current 28V；
B) product self-inspection function, having Power-On Self-Test (time is not more than 30s), period self-test and starting self-test, (time is not
Greater than 1min) function；
C) output voltage and current monitoring reporting functions；
D) defencive function: including input overvoltage/undervoltage protection；Output overcurrent protection, overvoltage protection, short-circuit protection and overheat are protected
Shield.
E) switching on and shutting down control function；
(3) average time between failures (MTBF) of high-voltage DC power supply:
Design typification minimum acceptable value: 28000 hours；
Maturity period target value: 36000 hours；
(4) outer dimension of high-voltage DC power supply: length × width × height=254mm × 200mm × 45mm
High-voltage DC power supply weight :≤5kg；
Example two:
(1) high-voltage DC power supply is installed on interior of aircraft, exports direct current 28V as system load power supply, interface includes all the way
Input interface, two-way output interface and CAN bus communication interface；
(2) in order to adapt to environmental condition, it is ensured that product is in temperature, humidity, height, salt fog, quick bacterium, vibration, impact and adds
Guarantee that equipment is working properly under the environmental conditions such as speed not damage, mainly take following measures in product design:
1. not higher than -55 DEG C or -55 DEG C of process screenings of product and component selection lowest temperature of installing；Component selects temperature
It spends the upper limit and is not less than+85 DEG C, heat generating components operating temperature is not less than 105 DEG C, and carries out the heat such as radiate to power heating device
Design measure makes component operating temperature be no more than+85 DEG C.
2. pair product structure part selects the anti-enzyme bacterium material of salt spray resistance, chemical surface treatment is carried out to structural member.
3. installation is greater than 50g component and component carries out Design of Reinforcement.
4. pcb board grade component of installing carries out three proofings processing and insulation processing.It is wanted according to " three proofings " of national military standard relevant regulations
It asks, mature technological measure is taken from the following aspects:
A) aluminum hardware uses conductive anode, protects the part spray protective paint of product external surfaces.For sharp edge
Blunt processing is carried out, prevents paint layer at sharp edge excessively thin；
B) fastener material selects austenitic stainless steel 1Cr18Ni9Ti, has good corrosion resistance and resistance to stress rotten
Corrosion energy；Cable, auxiliary material press aviation-grade standard application；
C) " three proofings " processing is carried out to pcb board spraying polyurethane varnish, takes encapsulation process for bga device, prevented
Sealing vapour enters bottom device, causes decreasing insulating between pin, causes operation irregularity under hygrothermal environment.
D) high-voltage DC power supply selects aircraft finished product connector, and shell uses aluminum alloy surface anodized, has
Three proofings function；Internal component, pcb board spray three-proofing coating；Attachment screw and stud use 1Cr18Ni9Ti stainless steel material.
5. anti-vibration designs
It takes measures as follows:
A) freedom from vibration of product is fully considered in the structure of deisgn product；
B) force analysis is carried out to product structure, reinforcement design is carried out to load-bearing and force part, enhances shock resistance；
C) installation component and part consolidation are handled；
D) screws bolts of connecting portion are equipped with plain cushion and spring washe or anti-loosening measure.
Working principle: for this kind of high voltage and high power density DC power supply, airborne finished-product volume and weight, high pressure are taken into account
DC power supply uses modularized design, and rated power 3.6KW gives system power supply, while this high-voltage DC power supply is to be isolated
DC converter based on type DC/DC converter technique is its working principle is that the high voltage direct current of input is become by DC/DC direct current
The topological structure for changing circuit is converted into DC28V output, and overcurrent protection, overvoltage protection, overheat are realized in the process of conversion
Protection and short-circuit protection function, and add synchronous rectification to be the DC/DC DC transfer circuit topology knot of technical foundation based on half-bridge
Structure, the high-power DC power supply suitable for high voltage input its advantage is that under nominal operating conditions, transfer efficiency be up to 95% with
On, circuit structure is relatively easy, has good Electro Magnetic Compatibility and very high power density, and high voltage direct current input detection
Including input voltage measurement and input electric cur- rent measure direct current 270V voltage by electric resistance partial pressure, amplifier turns with being subsequently inputted into A/D
It changes；
Current signal is that current signal is carried out isolation sampling by current Hall sensor, and amplifier is with being subsequently inputted into A/
D conversion circuit, and output detection circuit is mainly the voltage and current for detecting output, by single chip circuit by the output of power supply
State real-time report, and better ripple and noise suppressed in order to obtain, the output design of high-voltage DC power supply have dedicated
Filter circuit output filtering is all made of patch polymer capacitor+patch thin-film capacitor+ultracrystallite common mode inductance and is filtered, and single
Piece electromechanics road contains clock circuit and watchdog circuit, is that the core of high-voltage DC power supply data processing and control is responsible for power supply
Switching on and shutting down control, data acquisition process carries out the task such as communicating by CAN interface and host computer, and single-chip microcontroller is selected
DsPIC30F6012A, integrated level is high, has flexible addressing mode, the C language compiler instruction set frame of optimization using CMOS technology
144KB FLASH program space 2.5~5.5V of 8K internal RAM memory wide operating voltage range refers in 16 bit wide data/address bus piece of structure
Enabling the period be up to 30MHz can be facilitated the debugging of software and program to download, be completed entire high pressure like this with in-circuit emulation and programming
The use process of high power density DC power supply.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of high voltage and high power density DC power supply, including input filter and surge restraint circuit, input detecting circuit, DC-
DC DC transfer circuit, output filter circuit, output detection circuit, single chip machine controlling circuit and auxiliary power circuit, feature
It is: is electrically to connect between the input terminal of the output terminal and input detecting circuit of the input filter and surge restraint circuit
It connects, and the input terminal of the connection terminal access DC-DC DC transfer circuit of input detecting circuit, the DC-DC DC converting
The input terminal of the output terminal access output filter circuit of circuit, and the connection terminal of output filter circuit and output detection electricity
To be electrically connected between the connection terminal on road, the input of the output terminal access single chip machine controlling circuit of the output detection circuit
The output terminal of the output terminal access auxiliary power circuit of terminal, the input filter and surge restraint circuit.
2. a kind of high voltage and high power density DC power supply according to claim 1, it is characterised in that: the DC-DC direct current
Translation circuit includes electrolytic capacitor C1, C2, C3, metal-oxide half field effect transistor M1, M2, M3, M4, inductance K1, K2, T2, transformer
T1, resistor K3, and to be sequentially connected in series between C1, C2, M1, M2, and one end of the series connection access T1 of C1, C2, and
The other end of M1, M2 series connection access T1.
3. a kind of high voltage and high power density DC power supply according to claim 2, it is characterised in that: go here and there one end of the M3
Couple one end into K1, and one end of the other end series connection access M4 of M3, and one end of the other end series connection access K2 of M4, and
And the other end of the other end access K1 of K2, while the connection terminal of C3 and K3 parallel connection access K1.
4. a kind of high voltage and high power density DC power supply according to claim 1, it is characterised in that: the input detection electricity
Road include direct current 270V, electric resistance partial pressure, amplifier follow, A/D conversion chip, 12V isolation, amplifier with amiable anode current Hall,
It and is to be sequentially connected in series structure, and anode between direct current 270V, electric resistance partial pressure, amplifier follow, A/D conversion chip is isolated with 12V
Current Hall, amplifier follow A/D conversion chip be isolated with 12V between to be sequentially connected in series structure.
5. a kind of high voltage and high power density DC power supply according to claim 1, it is characterised in that: the output filtered electrical
Road includes electrolytic capacitor C4, C6, capacitor C5, C7, altogether film inductor L1, and one end of C4, C6 and one end of C5, C7 access in parallel
One end of L1, and the other end of the other end of the other end of C4, C6 and C5, C7 access L1 in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254379.5U CN209200939U (en) | 2018-12-29 | 2018-12-29 | A kind of high voltage and high power density DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254379.5U CN209200939U (en) | 2018-12-29 | 2018-12-29 | A kind of high voltage and high power density DC power supply |
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| Publication Number | Publication Date |
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| CN209200939U true CN209200939U (en) | 2019-08-02 |
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ID=67430797
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| CN201822254379.5U Active CN209200939U (en) | 2018-12-29 | 2018-12-29 | A kind of high voltage and high power density DC power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072910A (en) * | 2020-07-27 | 2020-12-11 | 恒宇信通航空装备(北京)股份有限公司 | Small-power supply meeting national military standard airborne equipment |
| CN113285594A (en) * | 2021-05-28 | 2021-08-20 | 太原航空仪表有限公司 | Airborne aviation 270V power supply |
-
2018
- 2018-12-29 CN CN201822254379.5U patent/CN209200939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072910A (en) * | 2020-07-27 | 2020-12-11 | 恒宇信通航空装备(北京)股份有限公司 | Small-power supply meeting national military standard airborne equipment |
| CN113285594A (en) * | 2021-05-28 | 2021-08-20 | 太原航空仪表有限公司 | Airborne aviation 270V power supply |
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| CP03 | Change of name, title or address |
Address after: 122000 105, section 5, Wenhua Road, Longcheng District, Chaoyang City, Liaoning Province Patentee after: Chaoyang Microelectronics Technology Co., Ltd Address before: 122000 No. two, section 75, Chaoyang City, Liaoning, Xinhua Road Patentee before: CHAOYANG RADIO COMPONENTS Co.,Ltd. |