CN203500078U - Multipath resistor heat dissipation device - Google Patents
Multipath resistor heat dissipation device Download PDFInfo
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- CN203500078U CN203500078U CN201320610420.2U CN201320610420U CN203500078U CN 203500078 U CN203500078 U CN 203500078U CN 201320610420 U CN201320610420 U CN 201320610420U CN 203500078 U CN203500078 U CN 203500078U
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Abstract
The utility model relates to a multipath resistor heat dissipation device. The multipath resistor heat dissipation device comprises a control panel, wherein a heat dissipation circuit is arranged on the control panel. The multipath resistor heat dissipation device further comprises a line connection port and a plurality of line output ports, wherein the line connection port is connected with the heat dissipation circuit and a power circuit, a plurality of MOS tubes are arranged on the line output ports in a cooperation mode, the heat dissipation circuit is connected with the line output ports through the MOS tubes, and the line output ports are connected with a plurality of fans. According to the multipath resistor heat dissipation device, different MOS tubes are used for having control over different line output ports so as to control different fans to work; due to the facts that the number of the arranged fans can be determined according to the actual cooling requirements, and the technical function of sensing, the technical function of sampling, the technical function of detection and the technical function of protection are integrated, the situations that large currents are caused due to the fact that rotation of the fans is locked, the voltage of the fans is unstable, and the heat dissipation conditions of the fans are poor are avoided, the service life of the multipath resistor heat dissipation device is prolonged, the cooling effect is good, and working efficiency is high; according to the structure, due to the fact that the MOS tubes are used, peak values of the whole heat dissipation circuit are staggered, disturbance is low, and the overall cost of the multipath resistor heat dissipation device is reduced.
Description
Technical field
The utility model belongs to the technical field of essential electronic element, particularly a kind of radiating effect better and in the operating process of whole heat radiation the more stable multichannel resistance sink of function operation.
Background technique
In automobile industry, motor is the cardia of automobile, the normal guarantee of work of motor vehicle operating normal, and cooling system is the important component part of motor, and the power character of motor, Economy and reliability are had a significant impact.
Instantly in automotive industry, along with improving constantly of engine speed and power, requirement for cooling system is more and more higher, thereby also more and more deep to the design and research of engine-cooling system, yet the cooling system of prior art but cannot meet this high-level requirement, and cooling heat dissipation effect causes anxiety.
Model utility content
The technical problem that the utility model solves is, in prior art, motor especially the rotating speed of motor car engine and power along with industrial expansion improves constantly, yet existing cooling system but cannot meet this high-level requirement, and the actual working state of the cooling system causing cannot meet more and more higher requirement, the problem that cooling heat dissipation effect causes anxiety, and then a kind of multichannel resistance sink of optimizing structure is provided.
The technological scheme that the utility model adopts is, a kind of multichannel resistance sink, comprise control panel, described control panel is provided with radiating circuit, described sink also comprises 1 circuit access interface and some line output mouths, described circuit access interface is connected with power circuit with radiating circuit respectively, described some line output mouth cooperations are provided with some metal-oxide-semiconductors, described radiating circuit is connected by metal-oxide-semiconductor with described some line output mouths, and described some line output mouths are connected with some blower fans.
Preferably, described control panel dorsal part is provided with radiating block, and described radiating block comprises heat transfer layer and the heat dissipating layer that laminating arranges, and the heat transfer layer of described radiating block is by the metal-oxide-semiconductor welding joint of soldering-tin layer and control panel.
Preferably, described control panel is provided with radome.
Preferably, described sink comprises 1～5 line output mouth.
Preferably; described power circuit is connected with over-and under-voltage protective circuit; described radiating circuit comprises alignment circuit, metal-oxide-semiconductor drive circuit, over-current protection circuit and temperature protection circuit; described power circuit, circuit access interface are connected in turn with alignment circuit; described metal-oxide-semiconductor drive circuit is connected with alignment circuit, over-current protection circuit and temperature protection circuit respectively, and described metal-oxide-semiconductor drive circuit is connected with described metal-oxide-semiconductor.
The utility model provides a kind of multichannel resistance sink of optimizing structure, by arranging and draw together 1 circuit access interface and some line output mouths on the control panel of sink, circuit access interface is connected respectively to radiating circuit to be connected with power circuit, guarantee the single of heat radiation target, and some line output mouths are equipped with to some metal-oxide-semiconductors, radiating circuit is connected by metal-oxide-semiconductor with some line output mouths, with different metal-oxide-semiconductors, control different line output mouths and then control different blower fan work, finally reach and make radiating circuit control the object that blower fan completes engine radiating, because the blower fan number arranging can follow actual cooling requirement to determine, and integrated sensing, sampling, the technical functionality that detects and protect, avoided blower fan to occur the large electric current of stall, voltage instability, the situations such as radiating condition is bad, extended the working life of sink, good cooling results, working efficiency is high, use the structure of metal-oxide-semiconductor to make integral heat sink circuit peak value staggered, disturb few, whole sink cost.
Accompanying drawing explanation
Fig. 1 is plan view structural representation of the present utility model;
Fig. 2 is plan view structural representation of the present utility model;
Fig. 3 is the structural representation of control panel of the present utility model and radiating block;
Fig. 4 is electrical block diagram of the present utility model;
Fig. 5 is the circuit diagram of power circuit and over-and under-voltage protective circuit in embodiment of the present utility model;
Fig. 6 is the circuit diagram of alignment circuit and metal-oxide-semiconductor drive circuit in embodiment of the present utility model;
Fig. 7 is the circuit diagram of temperature protection circuit in embodiment of the present utility model;
Fig. 8 is the circuit diagram of over-current protection circuit in embodiment of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but protection domain of the present utility model is not limited to this.
As shown in the figure, the utility model relates to a kind of multichannel resistance sink, comprise control panel 1, described control panel 1 is provided with radiating circuit, described sink also comprises 1 circuit access interface 2 and some line output mouths 3, described circuit access interface 2 is connected with power circuit with radiating circuit respectively, described some line output mouths 3 cooperations are provided with some metal-oxide-semiconductors 4, described radiating circuit is connected by metal-oxide-semiconductor 4 with described some line output mouths 3, and described some line output mouths 3 are connected with some blower fans.
In the utility model, on the control panel 1 of sink, radiating circuit being set, is the center of whole sink, can be set to single-chip microcomputer or integrated chip work, has multiple different implementation in prior art.Simultaneously, the utility model changes the structure of the direct connecting fan of available technology adopting radiating circuit, 1 circuit access interface 2 is set to be connected with power circuit, to guarantee the monotony of heat radiation target, several line output mouths 3 are set and connect several blower fans, and make radiating circuit by settings that connect one to one of the metal-oxide-semiconductor 4 that is equipped with some line output mouths 3 and line output mouth 3, can control by different metal-oxide-semiconductor 4 the different blower fans of different line output mouths 3 places connection; In the utility model, adopt some metal-oxide-semiconductors 4 to control the heat radiation operation of some blower fans, guaranteed first to transfer according to actual needs the demand of blower fan work, second 4 of different metal-oxide-semiconductors pass through balance, can so that between when work electromagnetic wave, peak value is staggered, disturb less and operating cost low, finally reach and radiating circuit controlled when blower fan normally completes heat radiation operation can also extend the sink object in working life.
Described control panel dorsal part is provided with radiating block 5, and described radiating block 5 comprises heat transfer layer 6 and the heat dissipating layer 7 that laminating arranges, and the heat transfer layer 6 of described radiating block 5 is metal-oxide-semiconductor 4 welding joint with control panel 1 by soldering-tin layer 8.
In the utility model, the radiating block 5 that has comprised heat transfer layer 6 and heat dissipating layer 7 in the dorsal part setting of control panel 1, and radiating block 5 is welded on the metal-oxide-semiconductor 4 of control panel 1 by soldering-tin layer 8, in the utility model, consider the good heat-transfer of copper, the fast feature of heat dissipation rate of aluminium, heat transfer layer 6 is preferably copper sheet material, heat dissipating layer 7 is preferably aluminium flake material, and the heat that electric current of metal-oxide-semiconductor 4 produces can be transferred on radiating block 5 rapidly, and immediately by radiating block 5 and ambient air heat exchange.
Described control panel 1 is provided with radome 9.
In the utility model, by radome 9 is set on control panel 1, guaranteed that the radiating circuit in sink can not be subject to extraneous electronic interferences, completes heat radiation operation smoothly.
Described sink comprises 1～5 line output mouth 3.
In the utility model, by several line output mouths 3 are set, and be equipped with blower fan and metal-oxide-semiconductor 4, make to determine according to actual radiating requirements the components and parts of heat radiation.Generally, two line output mouths 3, are equipped with the demand that 2 Fans and 2 metal-oxide-semiconductors 4 can meet heat radiation.
Described power circuit is connected with over-and under-voltage protective circuit; described radiating circuit comprises alignment circuit, metal-oxide-semiconductor drive circuit, over-current protection circuit and temperature protection circuit; described power circuit, circuit access interface 2 are connected in turn with alignment circuit; described metal-oxide-semiconductor drive circuit is connected with alignment circuit, over-current protection circuit and temperature protection circuit respectively, and described metal-oxide-semiconductor drive circuit is connected with described metal-oxide-semiconductor 4.
As shown in Fig. 5～8, the utility model has provided a kind of embodiment's scheme of circuit, but protection domain of the present utility model is not limited to this.
In the utility model, power circuit comprises TVS diode D101, triode Q101, Q102, resistance and electric capacity, metal-oxide-semiconductor drive circuit comprises operational amplifier U1C, resistance and electric capacity, motor in the utility model is in operation process, as run into foreign matter block, stuck, the emergency case such as wire short-circuiting, can cause current spikes to rise, overcurrent punctures circuit, metal-oxide-semiconductor 4 etc., even the serious consequences such as the overheated spontaneous combustion of wire be may cause, so be provided with over-current protection circuit in product, sample resistance, electric capacity, operational amplifier U1A, U1D and high-power constantan resistance R 211 comprised, product of the present utility model is in driving load motor running, its metal-oxide-semiconductor 4 parts such as grade can produce a large amount of heat energy, through radiating block 5 heat radiations, during normal work generally lower than 100 ℃, occur when abnormal, such as load motor blocking, electric current strengthens, or be deposited on radiating block 5 because of dust over time, while causing under radiating efficiency degradation situation, product temperature can rise rapidly, exceed the limiting value that each component can bear, in the utility model, the limit of working temperature of metal-oxide-semiconductor 4 is 150 ℃ of left and right, so for the sake of security, set temperature protective circuit in circuit, when product temperature surpasses 125 ± 3 ℃, close immediately metal-oxide-semiconductor 4 outputs, in temperature arrives safety range 110 ± 3 ℃ time, recover metal-oxide-semiconductor 4 outputs, temperature protection circuit comprises thermistor NTC, operational amplifier U1B, resistance and electric capacity, power supply of the present utility model is automobile storage battery, and battery voltage voltage change under each working state is larger, lower voltage when load current is larger, and when load reduces, during generator full-speed operation, voltage fast rise, no matter be that voltage is too high or too low, during the value of going beyond the limit of, all likely cause that product work occurs abnormal, element overvoltage damage etc., so over-and under-voltage protective circuit need to be set, comprise reference diode D102, triode Q103 and resistance.
The circuit theory of the present embodiment is: first power circuit is through alignment circuit, and through TVS diode, high frequency capacitance is processed, and the interference in filter out power guarantees the normal work of all circuit below.When electronic control unit control signal is low level, triode Q101 base stage is low level, in cut-off state, so Q102 base stage equates with emitter voltage, Q102 cut-off, power-off output, metal-oxide-semiconductor drive circuit etc. does not have power supply and quits work, the G of metal-oxide-semiconductor 4 is low level very, and in cut-off state, motor does not move; When input control signal voltage rises, after electric resistance partial pressure, make Q1 base voltage increase, while arriving threshold values, Q101 conducting, makes Q102 base stage lower than emitter voltage, Q102 conducting, power supply flows to each circuit through Q102.Power supply is received the inverting input of operational amplifier after divider resistance R201 and R202 dividing potential drop, and motor negative pole is connected to operational amplifier in-phase input end through divider resistance R203 and R204 and signal input part dividing potential drop.When signal input part is low level, power circuit cuts out, operational amplifier quits work, and its output terminal is low level.When applied signal voltage raises, operational amplifier powers on, starts working, in-phase input end is along with the variation of input signal, and after operational amplifier, output end voltage changes between 2.5V～supply voltage, connects G utmost point driven MOS pipe 4 work of metal-oxide-semiconductor 4, G pole tension reaches while opening threshold values, motor is initially located in low-speed running, and voltage is higher, and motor speed is higher, while reaching 10V in full-speed operation state, therefore regulate the input signal can meticulous adjusting motor speed.Over-and under-voltage protective circuit connects the reference diode of a 15V at product power input, its negative pole, through two electric resistance partial pressures, is connected to transistor base.During normal voltage, the cut-off of reference diode direction; When voltage surpasses 15V, start reverse-conducting, the voltage that is applied to triode Q103 base stage through electric resistance partial pressure (is generally 17.8 ± 0.2V while reaching threshold values, can require to arrange according to different system), triode Q103 conducting, its collector electrode connects power circuit Q101 base stage, make Q101 cut-off, Q102 cut-off, power supply stops output, complete machine quits work, enter guard mode, when power supply declines, triode Q103 ends because base voltage is too low, make Q101 recover normal work, enter working state; Under-voltage contrary, power supply is connected to triode Q103 base stage through dividing potential drop, and triode conducting when normal, by metal-oxide-semiconductor 4 cut-offs, when voltage is during lower than threshold values, Q103 base voltage is too low and end, metal-oxide-semiconductor 4 voltage rising conductings, Q101 cut-off, Q102 cut-off, power supply stops output, and complete machine quits work, and enters guard mode; When supply voltage rises, enter normal working.
In over-current protection circuit of the present utility model, the S utmost point of metal-oxide-semiconductor 4 is connected to GND through constantan resistance R 211, and under the electric current of normal work, resistance drop is less.When machine operation abnormal current rises; it is large that the pressure drop of constantan resistance becomes; this voltage amplifies and processes through operational amplifier; while reaching threshold values, the high level of output terminal is converted to low level when normally working rapidly, connects the G utmost point of metal-oxide-semiconductor 4 through diode, and its voltage is pulled low to setting range; make metal-oxide-semiconductor 4 in low on state; load motor Current Limits fixes on about 2～10A when stuck (be 10 ± 2A, be 4 ± 2A during short circuit), thereby protects each circuit not to be damaged.In the present embodiment, threshold values is with work at present change of state, and the higher electric current of load motor rotating speed is larger, and protection more in advance.
In temperature protection circuit of the present utility model; according to the characteristic of NTC thermistor; when 25 ℃ of normal temperature; its resistance value is 10K; rising along with temperature; resistance value is more and more less; in the time of 125 ℃; its resistance value is only 0.5K left and right, and has good linearity, therefore NTC thermistor and common 10K resistance are connected to dividing potential drop between positive source and the S utmost point of metal-oxide-semiconductor 4; rising with metal-oxide-semiconductor 4 temperature; reducing of NTC thermistor resistance and reducing, voltage signal amplifies through operational amplifier, and control output end low and high level changes.When normal, amplifier out is high level, and when temperature exceeds limit value, output terminal changes low level immediately into, connects the G utmost point of metal-oxide-semiconductor 4 through diode, its voltage is pulled down to below the threshold values of metal-oxide-semiconductor 4 conductings, closes metal-oxide-semiconductor 4 outputs, quits work.When temperature decline reaches safety range, output terminal reverts to high level, and circuit recovers normal work.
In the utility model, integrated temperature protection, current protection, three kinds of technology of overvoltage protection, avoid the damage under the situations such as the large electric current of blower fan stall, voltage instability, radiating condition be bad, sink being caused.
The utility model has solved in prior art, motor especially the rotating speed of motor car engine and power along with industrial expansion improves constantly, yet existing cooling system but cannot meet this high-level requirement, and the actual working state of the cooling system causing cannot meet more and more higher requirement, the problem that cooling heat dissipation effect causes anxiety, by arranging and draw together 1 circuit access interface 2 and some line output mouths 3 on the control panel 1 at sink, circuit access interface 3 is connected respectively to radiating circuit to be connected with power circuit, guarantee the single of heat radiation target, and some line output mouths 3 are equipped with to some metal-oxide-semiconductors 4, radiating circuit is connected by metal-oxide-semiconductor 4 with some line output mouths 3, with different metal-oxide-semiconductor 4, control different line output mouths 2 and then control different blower fan work, finally reach and make radiating circuit control the object that blower fan completes engine radiating, because the blower fan number arranging can follow actual cooling requirement to determine, and integrated sensing, sampling, the technical functionality that detects and protect, avoided blower fan to occur the large electric current of stall, voltage instability, the situations such as radiating condition is bad, extended the working life of sink, good cooling results, working efficiency is high, use the structure of metal-oxide-semiconductor 4 to make integral heat sink circuit peak value staggered, disturb few, whole sink cost.
Claims (5)
1. a multichannel resistance sink, comprise control panel, described control panel is provided with radiating circuit, it is characterized in that: described sink also comprises 1 circuit access interface and some line output mouths, described circuit access interface is connected with power circuit with radiating circuit respectively, described some line output mouth cooperations are provided with some metal-oxide-semiconductors, and described radiating circuit is connected by metal-oxide-semiconductor with described some line output mouths, and described some line output mouths are connected with some blower fans.
2. a kind of multichannel resistance sink according to claim 1, it is characterized in that: described control panel dorsal part is provided with radiating block, described radiating block comprises heat transfer layer and the heat dissipating layer that laminating arranges, and the heat transfer layer of described radiating block is by the metal-oxide-semiconductor welding joint of soldering-tin layer and control panel.
3. a kind of multichannel resistance sink according to claim 1, is characterized in that: described control panel is provided with radome.
4. a kind of multichannel resistance sink according to claim 1, is characterized in that: described sink comprises 1～5 line output mouth.
5. a kind of multichannel resistance sink according to claim 1; it is characterized in that: described power circuit is connected with over-and under-voltage protective circuit; described radiating circuit comprises alignment circuit, metal-oxide-semiconductor drive circuit, over-current protection circuit and temperature protection circuit; described power circuit, circuit access interface are connected in turn with alignment circuit; described metal-oxide-semiconductor drive circuit is connected with alignment circuit, over-current protection circuit and temperature protection circuit respectively, and described metal-oxide-semiconductor drive circuit is connected with described metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610420.2U CN203500078U (en) | 2013-09-30 | 2013-09-30 | Multipath resistor heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610420.2U CN203500078U (en) | 2013-09-30 | 2013-09-30 | Multipath resistor heat dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500078U true CN203500078U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320610420.2U Expired - Lifetime CN203500078U (en) | 2013-09-30 | 2013-09-30 | Multipath resistor heat dissipation device |
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| Country | Link |
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| CN (1) | CN203500078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300321A (en) * | 2021-04-23 | 2021-08-24 | 上海卫星工程研究所 | Intelligent power distribution circuit based on MOSFET (metal-oxide-semiconductor field effect transistor), and satellite power distribution equipment |
-
2013
- 2013-09-30 CN CN201320610420.2U patent/CN203500078U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300321A (en) * | 2021-04-23 | 2021-08-24 | 上海卫星工程研究所 | Intelligent power distribution circuit based on MOSFET (metal-oxide-semiconductor field effect transistor), and satellite power distribution equipment |
| CN113300321B (en) * | 2021-04-23 | 2023-03-14 | 上海卫星工程研究所 | Intelligent power distribution circuit based on MOSFET (metal-oxide-semiconductor field effect transistor), and satellite power distribution equipment |
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Granted publication date: 20140326 |