CN203443215U - Portable constant temperature device - Google Patents
Portable constant temperature device Download PDFInfo
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- CN203443215U CN203443215U CN201320474149.4U CN201320474149U CN203443215U CN 203443215 U CN203443215 U CN 203443215U CN 201320474149 U CN201320474149 U CN 201320474149U CN 203443215 U CN203443215 U CN 203443215U
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- constant temperature
- synchronous boost
- module
- control signal
- temperature device
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Abstract
The utility model provides a portable constant temperature device, which comprises a constant temperature box body, a power supply for powering the portable constant temperature device, a conversion circuit for performing direct-current voltage-transformation processing on voltage of the power supply and outputting the voltage, a temperature sensor for detecting the temperature in the constant temperature box body and a semiconductor constant temperature device, wherein the semiconductor constant temperature device is used for using the direct current outputted from the conversion circuit to refrigerate or heat air in the constant temperature box body according to the temperature detected by the temperature sensor. The portable constant temperature device uses a small-sized lithium battery pack, the conversion circuit and the corresponding semiconductor constant temperature device, so the whole portable constant temperature device is small in size, and longer in refrigeration time, heating time or thermal insulation time.
Description
Technical field
The utility model relates to insulating box design field, more particularly, relates to a kind of portable constant temperature device.
Background technology
Along with scientific and technological development, it is more and more universal that automobile becomes, and people wish in automobile can comfortable happiness the same as family, to alleviate as far as possible fatigue during the journey.Therefore there is people to develop the equipment such as small-sized car refrigerator, vehicle-mounted incubator or Simple heat insulation case, to facilitate rider in time by food fresh-keeping, maybe can drink and have beverage or food iced or insulation.
But the general use of existing car refrigerator or vehicle-mounted incubator is all vehicle power, need to be placed on automobile and use, and can only accomplish " with car, carrying ", cannot accomplish " carrying ", is difficult to meet the demand of market to portable constant temperature device.And Simple heat insulation case is only freezed, heats or be incubated the article in Simple heat insulation case by low-temperature receiver or the thermal source of ice cube or heat block and so on, although this Simple heat insulation case has met portable requirement, but its cooling time, heat the time or temperature retention time is all shorter
Therefore, be necessary to provide a kind of portable constant temperature device, to solve the existing problem of prior art.
Utility model content
The utility model object is to provide a portable constant temperature device, and it uses small-sized lithium battery group, change-over circuit and corresponding semiconductor thermostat, makes the volume of whole portable constant temperature device little, and cooling time, heats the time or temperature retention time is longer; To solve, the volume of existing car refrigerator or vehicle-mounted incubator is large, cooling time, heat all shorter technical problems of time or temperature retention time.
For addressing the above problem, the technical scheme that the utility model provides is as follows:
A kind of portable constant temperature device is provided, and it comprises:
Thermostatic box;
Power supply source, for giving described portable constant temperature device power supply;
Change-over circuit, exports for the voltage of described power supply source being carried out after direct current transformation is processed;
Temperature sensor, for detection of the temperature in described thermostatic box; And
Semiconductor thermostat, for the temperature detecting according to described temperature sensor, is used the direct current of described change-over circuit output freeze or heat operation the air in described thermostatic box.
In portable constant temperature device described in the utility model, described power supply source is lithium battery group.
In portable constant temperature device described in the utility model, described change-over circuit comprises:
Direct-flow input end, for input direct voltage signal;
Control signal generation module, for generation of changeover control signal;
Two synchronous boost modules, it comprises at least one energy-storage units, for according to described changeover control signal to the processing of boosting of described d. c. voltage signal;
DC output end, the d. c. voltage signal boosting after processing for exporting described synchronous boost module;
Described direct-flow input end is connected with described control signal generation module and described two synchronous boost modules respectively, and described control signal generation module is connected with described two synchronous boost modules, and described two synchronous boost modules are connected with described DC output end;
Wherein said two synchronous boost modules are parallel with one another, and one of them of two synchronous boost modules is to the processing of boosting of described d. c. voltage signal described in the same time.
In portable constant temperature device described in the utility model, the pulse width modulation controlled chip that described control signal generation module is model TL594.
In portable constant temperature device described in the utility model, described synchronous boost module also comprises half-bridge driven chip, the first gauge tap pipe and the second gauge tap pipe of model MIC4102;
Described half-bridge driven chip comprises signal input part, first signal output and secondary signal output, described signal input part is connected with described control signal generation module, described first signal output is connected with the control end of described the first gauge tap pipe, described secondary signal output is connected with the control end of described the second gauge tap pipe, the input of the input of described the first gauge tap pipe and described the second gauge tap pipe is connected with described energy-storage units respectively, the output head grounding of described the first gauge tap pipe, the output of described the second gauge tap pipe is connected with described DC output end.
In portable constant temperature device described in the utility model, described change-over circuit comprises at least n control signal generation module and 2n synchronous boost module at least, described in each, control signal generation module is connected with two described synchronous boost modules respectively, and wherein n is greater than 1 integer; Described direct-flow input end is connected with all control signal generation modules and all synchronous boost modules respectively, and all synchronous boost modules are connected with described DC output end;
Wherein described two the synchronous boost modules corresponding with described control signal generation module are parallel with one another, and one of them of two synchronous boost modules is to the processing of boosting of described d. c. voltage signal described in the same time.
In portable constant temperature device described in the utility model; described change-over circuit also comprises that described overcurrent protection module is connected with described DC output end with described synchronous boost module respectively for the output of described change-over circuit being carried out to the overcurrent protection module of overcurrent protection.
In portable constant temperature device described in the utility model, described overcurrent protection module is the circuit protection chip of model DW01.
In portable constant temperature device described in the utility model, described change-over circuit also comprises the filtration module that the d. c. voltage signal of input is carried out to filtering processing, and described filtration module is connected with DC output end, control signal generation module and synchronous boost module respectively.
Implement portable constant temperature device of the present utility model, there is following beneficial effect: this portable constant temperature device is used small-sized lithium battery group, change-over circuit and corresponding semiconductor thermostat, make the volume of whole portable constant temperature device little, and cooling time, heat the time or temperature retention time is longer.The volume that solved existing car refrigerator or vehicle-mounted incubator is large, cooling time, heat all shorter technical problems of time or temperature retention time.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the preferred embodiment of portable constant temperature device of the present utility model;
Fig. 2 is the structural representation of the first preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model;
Fig. 3 is the structural representation of the second preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model;
Fig. 4 is the structural representation of the 3rd preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model;
Fig. 5 is the electrical block diagram of specific embodiment of the change-over circuit of portable constant temperature device of the present utility model.
The specific embodiment
Below in conjunction with diagram, preferred embodiment of the present utility model is described in detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of the preferred embodiment of portable constant temperature device of the present utility model.The portable constant temperature device of this preferred embodiment comprises thermostatic box 11, power supply source 12, change-over circuit 13, temperature sensor 14 and semiconductor thermostat 15.This power supply source 12 is for powering to portable constant temperature device, and it is preferably the lithium battery group of small size.Change-over circuit 13 is exported for the voltage of power supply source 12 being carried out after direct current transformation is processed; Temperature sensor 14 is for detection of the temperature in thermostatic box 11; The temperature of semiconductor thermostat 15 for detecting according to temperature sensor 14, is used the direct current of change-over circuit 13 outputs freeze or heat operation the air in thermostatic box 11.
When the portable constant temperature device of this preferred embodiment is used, power supply source 12 is directly inputted in the semiconductor thermostat 15 being arranged on thermostatic box 11 by direct current by change-over circuit 13, be used for driving semiconductor thermostat 15 work, wherein the voltage of 13 pairs of power supply sources 12 of change-over circuit carries out direct current transformation processing, these change-over circuit 13 volumes are little and conversion efficiency is high, and the structure of change-over circuit 13 and operation principle refer to specific descriptions below.The temperature sensor 14 being simultaneously arranged in thermostatic box 11 can detect the temperature in thermostatic box 11, and the temperature data detecting is fed back to semiconductor thermostat 15; The temperature that semiconductor thermostat 15 can detect according to temperature sensor 14 like this, is used the direct current of change-over circuit 13 outputs the air in thermostatic box 11 is freezed or heat operation, realizes the accurate control to the air themperature in thermostatic box 11.
Below the structure of the change-over circuit of portable constant temperature device of the present utility model is described in detail.
Please refer to Fig. 2, Fig. 2 is the structural representation of the first preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model.The change-over circuit 20 of this preferred embodiment comprises direct-flow input end 21, control signal generation module 22, two synchronous boost modules 23 and DC output ends 24; This direct-flow input end 21 is for input direct voltage signal; Control signal generation module 22 is for generation of changeover control signal; Each synchronous boost module 23 comprises at least one energy-storage units 231, for according to changeover control signal to the d. c. voltage signal processing of boosting; The d. c. voltage signal that DC output end 24 boosts after processing for exporting synchronous boost module 23.DC output end 24 is connected with control signal generation module 22 and two synchronous boost modules 23 respectively, and control signal generation module 22 is connected with two synchronous boost modules 23, and two synchronous boost modules 23 are connected with DC output end 24.
When the change-over circuit 20 of this preferred embodiment uses, first, to direct-flow input end 21 input direct voltage signals, direct-flow input end 21 sends to control signal generation module 22 and synchronous boost module 23 by the voltage signal of input; Then control signal generation module 22 generates corresponding changeover control signal and sends to synchronous boost module 23; Synchronous boost module 23 according to changeover control signal to the processing of boosting of direct-flow input end 21 input direct voltage signals, be specially between two synchronous boost modules 23 parallel with one another, in two synchronous boost modules 23 of same time, only have one to the d. c. voltage signal processing of boosting, and the d. c. voltage signal boosting after processing is sent to DC output end 24 outputs.
In order to guarantee miniaturization and the high efficiency of change-over circuit 20, the power output of each synchronous boost module 23 is all controlled between 30 watts to 65 watts, the energy-storage units 231 (being generally inductance) of synchronous boost module 23 and the miscellaneous part of synchronous boost module 23 (as gauge tap pipe etc.) all can adopt the parts that volume is little and efficiency is high like this, as gauge tap pipe adopts SOIC (Small Outline Integrated Circuit Package, the integrated single channel encapsulation of surface mount) mode encapsulates, inductance can adopt the small inductor of power output between 30 watts to 65 watts.As power output need to continue to increase, in order to guarantee the normal operation of inductance and gauge tap pipe, on inductance, must be provided for the fin of heat radiation, gauge tap pipe must be used the mode of the TO-220 that is beneficial to heat radiation to encapsulate, the volume of change-over circuit 20 will inevitably increase greatly like this, due to the increase of caloric value, the conversion efficiency of change-over circuit 20 also can reduce greatly simultaneously.
In two synchronous boost modules 23 of same time, only has one to the d. c. voltage signal processing of boosting simultaneously, this change-over circuit 20 does not need the output of two synchronous boost modules 23 to carry out current-sharing processing like this, has further improved the conversion efficiency of this change-over circuit 20.
The change-over circuit 20 of this preferred embodiment has adopted two synchronous boost module 23 parallel connections to the d. c. voltage signal processing of boosting, the inductance of synchronous boost module 23 and gauge tap Guan Junke adopt the parts that volume is little and efficiency is high, have reduced the volume of change-over circuit, the conversion efficiency that has reduced the operating temperature of change-over circuit and improved change-over circuit.
Please refer to Fig. 3, Fig. 3 is the structural representation of the second preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model.The change-over circuit 30 of this preferred embodiment also comprises filtration module 35 and overcurrent protection module 36 on the basis of the first preferred embodiment; Wherein filtration module 35 is for carrying out filtering processing to the d. c. voltage signal of input, and overcurrent protection module 36 is for carrying out overcurrent protection to the output of change-over circuit 30.This filtration module 35 is connected with direct-flow input end 21, control signal generation module 22 and synchronous boost module 23 respectively; Overcurrent protection module 36 is connected with synchronous boost module 23 and DC output end 24 respectively.
When the change-over circuit 30 of this preferred embodiment uses, first to direct-flow input end 21 input direct voltage signals, the d. c. voltage signal of 35 pairs of direct-flow input ends of filtration module, 21 inputs carries out filtering processing, then the voltage signal of input is sent to control signal generation module 22 and synchronous boost module 23; Then control signal generation module 22 generates corresponding changeover control signal and sends to synchronous boost module 23; Synchronous boost module 23 according to changeover control signal to the processing of boosting of direct-flow input end 21 input direct voltage signals; be specially between two synchronous boost modules 23 parallel with one another; the same time only has the processing of boosting of 23 pairs of d. c. voltage signals of a synchronous boost module, and the d. c. voltage signal boosting after processing is sent to DC output end 24 outputs by overcurrent protection module 36.
The change-over circuit 30 of this preferred embodiment uses 35 pairs of d. c. voltage signals of filtration module to carry out filtering processing on the basis of the first preferred embodiment; use each parts in 36 pairs of change-over circuits 30 of overcurrent protection module to carry out overcurrent protection; having reduced the volume of change-over circuit, reduced the operating temperature of change-over circuit and improved on the basis of conversion efficiency of change-over circuit, further guaranteed the stability of change-over circuit 30 work.
Please refer to Fig. 4, Fig. 4 is the structural representation of the 3rd preferred embodiment of the change-over circuit of portable constant temperature device of the present utility model.On the basis of the second preferred embodiment, the change-over circuit 40 of this preferred embodiment comprises at least n control signal generation module 22 and 2n synchronous boost module 23 at least, each control signal generation module 22 is connected with two corresponding synchronous boost modules 23 respectively, and wherein n is greater than 1 integer.Direct-flow input end 21 is connected with all control signal generation module 22 and all synchronous boost modules 23 respectively, and all synchronous boost modules 23 are connected with DC output end 24.
When the change-over circuit 40 of this preferred embodiment uses, first to direct-flow input end 21 input direct voltage signals, the d. c. voltage signal of 35 pairs of direct-flow input ends of filtration module, 21 inputs carries out filtering processing, then the voltage signal of input is sent to control signal generation module 22 and synchronous boost module 23; Then control signal generation module 22 generates corresponding changeover control signal and sends to synchronous boost module 23; Synchronous boost module 23 according to changeover control signal to the processing of boosting of direct-flow input end 21 input direct voltage signals.
Because needs are exported high-power signal, and the optimum output power of the synchronous boost module 23 on each road is 30 watts to 65 watts.Therefore in this preferred embodiment, according to the power setting n of an output signal control signal generation module 22 and 2n synchronous boost module 23, each control signal generation module 22 is controlled the power stage of two synchronous boost modules 23, two synchronous boost modules 23 being controlled by same control signal generation module 22 are parallel with one another, and one of them of above-mentioned two synchronous boost modules 23 of same time is to the d. c. voltage signal processing of boosting.As certain power supply need to be exported the power of 500 watts, 4 control signal generation modules 22 and 8 synchronous boost modules 23 can be set, each synchronous boost module 23 power output is 62.5 watts, the same time has 4 synchronous boost modules 23 carrying out synchronous boost operation, and these 4 synchronous boost modules 23 are controlled by different control signal generation modules 22.
Last synchronous boost module 23 is sent to DC output end 24 outputs by the d. c. voltage signal boosting after processing by overcurrent protection module 36.
The change-over circuit 40 of this preferred embodiment has been realized the parallel connection between a plurality of synchronous boost modules 23 on the basis of the second preferred embodiment, has guaranteed the output of large power supply efficient stable.
The specific works principle that change-over circuit of the present utility model is described below by a specific embodiment, please refer to Fig. 5, and Fig. 5 is the electrical block diagram of specific embodiment of the change-over circuit of portable constant temperature device of the present utility model.
In this preferred embodiment, control signal generation module 22 is the pulse width modulation controlled chip IC 1 of model TL594; Synchronous boost module 23 comprises the half-bridge driven chip IC 2 that inductance L 1, inductance L 2, model are MIC4102, half-bridge driven chip IC 3, the first gauge tap pipe Q1 and Q3 and the second gauge tap pipe Q2 and the Q4 that model is MIC4102; Overcurrent protection module 36 is the circuit protection chip of model DW01; Filtration module 35 is capacitor C 3 and capacitor C 7.
Take inductance L 2, half-bridge driven chip IC 3, the first gauge tap pipe Q3 and the second gauge tap GuanQ4 mono-road below illustrates the operation principle of the change-over circuit 50 of this specific embodiment as example.
Wherein capacitor C 3 is connected with power end 12 pin of the power end VCC of direct-flow input end 21, half-bridge driven chip IC 3, the power end VCC of half-bridge driven chip IC 3 and pulse width modulation controlled chip IC 1 respectively with capacitor C 7.Pulse width modulation controlled chip IC 1 comprises power end 12 pin, first signal output 8 pin, secondary signal output 11 pin and output voltage feedback end 1 pin.Half-bridge driven chip IC 3 comprises power end VCC, signal input part PWM, first signal output LO and secondary signal output HO.Overcurrent protection chip IC 5 comprises power end VDD, current detecting end VM and protection control end DO.
The first signal output LO of half-bridge driven chip IC 3 is connected with the control end (being grid) of the first gauge tap pipe Q3, and the secondary signal output HO of half-bridge driven chip IC 3 is connected with the control end (being grid) of the second gauge tap pipe Q4; The input of the input of the first gauge tap pipe Q3 and the second gauge tap pipe Q4 is connected with direct-flow input end 21; The output head grounding of the first gauge tap pipe Q3, the output of the second gauge tap pipe Q4 is connected with one end of capacitor C 16, the other end ground connection of capacitor C 16; Because change-over circuit 50 is realized the output of power by capacitor C 16, the output of the second gauge tap pipe Q4 is connected with DC output end 24 by capacitor C 16.
The power end VDD of overcurrent protection chip IC 5 is connected with direct-flow input end 21 by voltage stabilizing chip TL431; the current detecting end VM of overcurrent protection chip IC 5 is connected with DC output end 24 by switching tube Q6, and the protection control end DO of overcurrent protection chip IC 5 controls the break-make of whole change-over circuit 50 by switching tube Q7.
When the change-over circuit 50 of this specific embodiment is worked, the voltage signal of direct-flow input end 21 inputs passes through, after capacitor C 3 and capacitor C 7 filtering, to be input to respectively power end 12 pin, the power end VCC of half-bridge driven chip IC 2 and the power end VCC of half-bridge driven chip IC 3 that drive pulse width modulation controlled chip IC 1.First signal output 8 pin of pulse width modulation controlled chip IC 1 and secondary signal output 11 pin send respectively changeover control signal to the signal input part PWM of half-bridge driven chip IC 2 and the signal input part PWM of half-bridge driven chip IC 3 subsequently.Be input to half-bridge driven chip IC 2 signal input part PWM changeover control signal and be input to the current potential of changeover control signal of signal input part PWM of half-bridge driven chip IC 3 contrary (when the changeover control signal that is input to the signal input part PWM of half-bridge driven chip IC 2 is high level, the changeover control signal that is input to the signal input part PWM of half-bridge driven chip IC 3 is low level).Make so the affiliated synchronous boost module 23 of the affiliated synchronous boost module 23 of half-bridge driven chip IC 3 and half-bridge driven chip IC 2 duty at one time also different.
If the synchronous boost module 23 under half-bridge driven chip IC 3 is in energy storage state, first gauge tap pipe Q3 conducting under the control of half-bridge driven chip IC 3, the second gauge tap pipe Q4 disconnects under the control of half-bridge driven chip IC 3, inductance L 2 is carried out the storage of energy, and at this moment the synchronous boost module 23 under half-bridge driven chip IC 2 is in output state.If the synchronous boost module 23 under half-bridge driven chip IC 3 is in output state, the first gauge tap pipe Q3 disconnects under the control of half-bridge driven chip IC 3, second gauge tap pipe Q4 conducting under the control of half-bridge driven chip IC 2, the energy of inductance L 2 is exported release, capacitor C 16 is carried out to output function, at this moment the synchronous boost module 23 under half-bridge driven chip IC 3 is in energy storage state.Synchronous boost modules 23 under synchronous boost module 23 under half-bridge driven chip IC 3 and half-bridge driven chip IC 2 are carried out power stage to capacitor C 16 successively like this, have improved the conversion efficiency (can up to 97%) of this change-over circuit 50.
In this specific embodiment, adopt the second gauge tap pipe Q2 and Q4 to replace isolating diode D1 of the prior art and D2, due to the R of the second gauge tap pipe Q2 and Q4 simultaneously
dSlow especially, as the R of the gauge tap pipe of model SI4164
dSbe generally 0.003 ohm to 0.004 ohm, therefore in the situation that the High-current output of 20A-30A, the power of loss is about 3 watts of left and right, (forward voltage of fast recovery diode or Ultrafast recovery diode can reach 1.0～1.2V to be far smaller than the loss of isolating diode change-over circuit when low-voltage, High-current output, even if adopt the Schottky diode of low pressure drop, also can produce the forward voltage drop of about 0.6V).Therefore the setting of the second gauge tap pipe Q2 and Q4 has greatly improved the conversion efficiency of translation circuit 50 and has not had the dead band voltage being caused by Schottky barrier voltage, reduce the self-heating of translation circuit 50 simultaneously, made the design miniaturization more of translation circuit 50.
When the change-over circuit 50 of this specific embodiment is worked, output voltage feedback end 1 pin of pulse width modulation controlled chip IC 1 also can detect output voltage, according to the size of output voltage, adjusts the working time of synchronous boost module 23, to guarantee the stable of output voltage.While is as excessive in the output current that the current detecting end VM of overcurrent protection chip IC 5 detects DC output end 24, and the protection control end DO of overcurrent protection chip IC 5 disconnects switching tube Q7, avoids large electric current to damage the parts in change-over circuit 50.
Portable constant temperature device of the present utility model is used small-sized lithium battery group, change-over circuit and corresponding semiconductor thermostat, makes the volume of whole portable constant temperature device little, and cooling time, heats the time or temperature retention time is longer.The volume that solved existing car refrigerator or vehicle-mounted incubator is large, cooling time, heat all shorter technical problems of time or temperature retention time.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing in spirit of the present utility model and principle, be equal to and replace or improvement etc., all should be included in protection domain of the present utility model.
Claims (9)
1. a portable constant temperature device, is characterized in that, comprising:
Thermostatic box;
Power supply source, for giving described portable constant temperature device power supply;
Change-over circuit, exports for the voltage of described power supply source being carried out after direct current transformation is processed;
Temperature sensor, for detection of the temperature in described thermostatic box; And
Semiconductor thermostat, for the temperature detecting according to described temperature sensor, is used the direct current of described change-over circuit output freeze or heat operation the air in described thermostatic box.
2. portable constant temperature device according to claim 1, is characterized in that, described power supply source is lithium battery group.
3. portable constant temperature device according to claim 1, is characterized in that, described change-over circuit comprises:
Direct-flow input end, for input direct voltage signal;
Control signal generation module, for generation of changeover control signal;
Two synchronous boost modules, it comprises at least one energy-storage units, for according to described changeover control signal to the processing of boosting of described d. c. voltage signal;
DC output end, the d. c. voltage signal boosting after processing for exporting described synchronous boost module;
Described direct-flow input end is connected with described control signal generation module and described two synchronous boost modules respectively, and described control signal generation module is connected with described two synchronous boost modules, and described two synchronous boost modules are connected with described DC output end;
Wherein said two synchronous boost modules are parallel with one another, and one of them of two synchronous boost modules is to the processing of boosting of described d. c. voltage signal described in the same time.
4. portable constant temperature device according to claim 3, is characterized in that the pulse width modulation controlled chip that described control signal generation module is model TL594.
5. portable constant temperature device according to claim 3, is characterized in that, described synchronous boost module also comprises half-bridge driven chip, the first gauge tap pipe and the second gauge tap pipe of model MIC4102;
Described half-bridge driven chip comprises signal input part, first signal output and secondary signal output, described signal input part is connected with described control signal generation module, described first signal output is connected with the control end of described the first gauge tap pipe, described secondary signal output is connected with the control end of described the second gauge tap pipe, the input of the input of described the first gauge tap pipe and described the second gauge tap pipe is connected with described energy-storage units respectively, the output head grounding of described the first gauge tap pipe, the output of described the second gauge tap pipe is connected with described DC output end.
6. portable constant temperature device according to claim 3, it is characterized in that, described change-over circuit comprises at least n control signal generation module and 2n synchronous boost module at least, described in each, control signal generation module is connected with two described synchronous boost modules respectively, and wherein n is greater than 1 integer; Described direct-flow input end is connected with all control signal generation modules and all synchronous boost modules respectively, and all synchronous boost modules are connected with described DC output end;
Wherein described two the synchronous boost modules corresponding with described control signal generation module are parallel with one another, and one of them of two synchronous boost modules is to the processing of boosting of described d. c. voltage signal described in the same time.
7. portable constant temperature device according to claim 3; it is characterized in that; described change-over circuit also comprises that described overcurrent protection module is connected with described DC output end with described synchronous boost module respectively for the output of described change-over circuit being carried out to the overcurrent protection module of overcurrent protection.
8. portable constant temperature device according to claim 7, is characterized in that, described overcurrent protection module is the circuit protection chip of model DW01.
9. portable constant temperature device according to claim 3, it is characterized in that, described change-over circuit also comprises the filtration module that the d. c. voltage signal of input is carried out to filtering processing, and described filtration module is connected with DC output end, control signal generation module and synchronous boost module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474149.4U CN203443215U (en) | 2013-07-26 | 2013-07-26 | Portable constant temperature device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320474149.4U CN203443215U (en) | 2013-07-26 | 2013-07-26 | Portable constant temperature device |
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| CN201320474149.4U Expired - Fee Related CN203443215U (en) | 2013-07-26 | 2013-07-26 | Portable constant temperature device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242705A (en) * | 2015-06-02 | 2016-01-13 | 深圳市至爱的科技发展有限公司 | Vehicle-mounted thermostat controller |
| CN107477942A (en) * | 2017-08-28 | 2017-12-15 | 罗国球 | A kind of environment friendly energy-saving portable freezing box |
-
2013
- 2013-07-26 CN CN201320474149.4U patent/CN203443215U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242705A (en) * | 2015-06-02 | 2016-01-13 | 深圳市至爱的科技发展有限公司 | Vehicle-mounted thermostat controller |
| CN107477942A (en) * | 2017-08-28 | 2017-12-15 | 罗国球 | A kind of environment friendly energy-saving portable freezing box |
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