CN209690456U - A kind of thermoelectric power generation testing stand - Google Patents

Abstract

The utility model discloses a kind of thermoelectric power generation testing stands, including cold source module, heat source module, air-introduced machine, heater box；Cold source module and heat source module are hollow tubular modules；The section of heat source module is square, and the section of cold source module is rectangle, and the rectangular long side in cold source module section is equal with the side length of heat source module cross-sectional square shape；Cold source module can be aligned with heat source module and grip thermoelectric slice.The position that the utility model quantity of cold source can arbitrarily be arranged with test objective and arrange around heat source, the utility model structure is simple, easy to disassemble；The utility model can simulate the mode of a variety of hot end heating and cold end heat dissipation, it is simple to operate, the heat source of thermoelectric power generation testing stand in the prior art and cold source structure is avoided to fix, the limited technical disadvantages of the operating condition that can be tested, therefore convenient for promoting and using in laboratory.

Description

A kind of thermoelectric power generation testing stand

Technical field

The utility model belongs to thermoelectric power generation technical field, and in particular to a kind of thermoelectric power generation testing stand.

Background technique

Thermoelectric slice is different from photovoltaic panel, its physical characteristic is not given by manufacturer's Direct Mark not only, Er Qieqi Internal resistance always changes with extraneous factor, and performance parameter is indefinite, directly affects thermal energy being converted into electric energy Transformation efficiency.

Current thermoelectric slice application is exposed to outdoor more, for example under photovoltaic panel combination, hot-air is exactly heat source, and cold source can With heat dissipation or water circulation；At vehicle exhaust end, heat source is high-temperature exhaust air waste heat, and cold source is extraneous convected air；In height On warm boiler, heat source is high-temperature steam even high temperature liquid iron, and cold source is air natural temperature etc., there are also human body thermoelectric electric organ, It is mostly used the self-produced self-powered in electronic device, heat source is human surface temperature, and cold source is liquefying refrigerating device.So thermoelectric power generation The outer work condition of piece has very much, must not use ideal electrical model, or cover other classes with a kind of condition model of unification Type.

The experimental rig that thermoelectric power generation performance parameter is directly measured on Vehicles Collected from Market is less, and cold source structure is mostly solid It is fixed, the operating mode of thermoelectric power generation experimental rig under various working cannot be simulated, is unfavorable for probing into the physics of thermoelectric slice and electrical Characteristic, therefore inconvenience is promoted the use of in the lab.

Utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and is provided a kind of suitable for a variety of works Condition acquisition research thermoelectric slice is electrical, physical characteristic thermoelectric power generation testing stand.

To realize the above-mentioned technical purpose, technical solution adopted in the utility model is as follows:

A kind of thermoelectric power generation testing stand, including cold source module, heat source module, air-introduced machine, heater box are provided；The cold source mould Block and heat source module are hollow tubular modules；The section of the heat source module is square, and the section of the cold source module is length Rectangular, the rectangular long side in cold source module section is equal with the side length of heat source module cross-sectional square shape；

The testing stand further includes fixed supporting module and the first self-clamping module and the second self-clamping module, first folder It holds module and the second self-clamping module is set to both ends and equal adjustable position and the fixation of fixed supporting module, for by cold source mould Block is aligned with heat source module and grips；The cold source module and heat source module pass through fixed supporting module, the first self-clamping module It, can at least one sandwiched thermoelectric slice between cold source module and heat source module when being gripped with the second self-clamping module；

It is provided with hot-air channel between the heater box and heat source module, air-introduced machine is set in the other end of heater box.

It further, further include at least two side partitions, the side partition area size is greater than the length of tubulose cold source module Square-section area and two rectangle end faces that tubulose cold source module can be clamped to, for being hindered in water cooling method Gear cold water goes out from cold source module side surface current.

Further, tapped through hole is offered at the both ends of the single side along pipe shaft length direction of the cold source module, The tapped through hole is respectively used to be sealedly and fixedly connected with cold source pipe and outlet pipe.

Further, among heat source module and cold source module the position opposite inner face of sandwiched thermoelectric slice be provided with it is recessed Slot, the temperature for being embedded into the hot and cold side of measurement thermoelectric slice in groove for accommodating thermocouple.

Further, it will turn on the conduit side cut-in pressure transmitter of air-introduced machine, measure the flow velocity of gas or liquid.

Further, several thermocouple wires are accessed into digital analog converter interface.

Further, the positive and negative of thermoelectric unit both ends is drawn by conducting wire pole, accesses number by rectangular insert connector Mode converter interface.

In order to simulate different MPPT in the effect of thermoelectric power generation, further, the testing stand further includes data acquisition system System, the data collection system include voltage sensor and pressure transmitter, current sensor, Analog input mModule and are used for Connect the digital analog converter and host computer of several thermocouple wires, the voltage sensor, pressure transmitter and current sensor The analog quantity measured accesses Analog input mModule and is transmitted to host computer.

The testing stand further includes load control module, by the access of load control module control load, is opened a way With the test of closed circuit.

For simulation distribution formula power supply, further, several thermoelectric slices are made up of different tandem compound modes multiple Thermoelectric unit, and be equipped with Energy Management System for each thermoelectric unit and realize that each thermoelectric unit keeps maximum power in real time. Further include DC-DC boost converter, MPPT controller is connected at the switching tube of the DC-DC boost converter, the PWM issued Wave controls input voltage, reaches maximum power point.

The utility model it is achieved the utility model has the advantages that

1, the utility model can according to need quantity and the position for the cold source module that setting is fixed on around heat source module, The mode of the heating of a variety of hot ends and cold end heat dissipation is simulated, it is simple to operate, avoid thermoelectric power generation testing stand in the prior art Heat source and cold source structure are fixed, the limited technical disadvantages of the operating condition that can be tested, therefore convenient for promoting and using in laboratory；

2, in the utility model heat source and cold source devised when fixed fixed supporting module and the first self-clamping module and Second self-clamping module, for cold source module and heat source module to be fixed, and sandwiched thermoelectric slice between the two, make thermoelectric slice with it is cold and hot End in contact is closer, and transformation efficiency is higher；And the quantity of cold source can be arbitrarily set with test objective and arranged around heat source Position, the utility model structure is simple, easy to disassemble；

3, the utility model places heat by being arranged in cold and hot end module with the groove of thermocouple adjoining dimensions Galvanic couple keeps the temperature for measuring thermoelectric slice both ends more acurrate, and is not required to the device of external other fixed thermocouples, and structure is simply easy to It realizes；

4, the utility model seeks physics, the electrical characteristic of thermoelectric slice by way of data acquire, and constructs a variety of thermoelectricity Piece model, and under the operating condition of Various Complex more efficient can be suitable for thermoelectricity so that simulation test which kind of MPPT algorithm is more preferable Power generation；

5, the principles of the present invention structure, test method are original creation at home, and test principle is related to calorifics and electricity Engineering is comprehensive test truly, explores thermoelectric slice physical characteristic different from conventional single thermoelectricity experimental rig, Consider many real actual application environments.

Detailed description of the invention

Fig. 1 is the utility model specific embodiment overall model schematic diagram；

Fig. 2 is the utility model specific embodiment cold source module and the fixed schematic diagram of heat source module；

Fig. 3 is the structural schematic diagram that the utility model specific embodiment cold source module uses water-cooling pattern；

Fig. 4 is the structural schematic diagram of the utility model specific embodiment setting thermocouple temperature measurement；

Fig. 5 is the structural schematic diagram of another embodiment setting thermocouple temperature measurement of the utility model；

Fig. 6 is the utility model rectangular insert connector connecting structure schematic diagram；

Fig. 7 is the utility model specific embodiment structural schematic diagram；

Fig. 8 is the utility model specific embodiment distributed generation resource logic diagram；

Fig. 9 is the structural block diagram of MPPT controller and DC-DC boost converter in the utility model specific embodiment；

It is marked in FIG. 1 to FIG. 9: 1- heat source module；2- cold source module；3- thermocouple；4- thermoelectric slice；5- air-introduced machine；6- adds Hot tank；7- cold water vessels；8- groove；9- thermocouple wire；10- cold water pipe；11- catch basin；The first tapped through hole of 12-；13- Two tapped through holes；14- hot-air duct；15- fixes supporting module；The first self-clamping module of 16-；The second self-clamping module of 17-；18- Side partition；19- thermocouple wire；20- host computer；21- load control module；22- Analog input mModule；23- rectangular insert connects Connect device.

Specific embodiment

The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.

Embodiment 1: such as Fig. 1, a kind of thermoelectric power generation testing stand, including cold source module 2, heat source module 1, air-introduced machine are provided 5, heater box 6；The cold source module 2 and heat source module 1 are hollow tubular modules；The section of the heat source module 1 is square, The section of the cold source module 2 is rectangle, the rectangular long side in 2 section of cold source module and 1 cross-sectional square shape of heat source module Side length is equal；

The testing stand further includes fixed supporting module 15 and the first self-clamping module 16 and the second self-clamping module 17, described First self-clamping module 16 and the second self-clamping module 17 are set to the both ends of fixed supporting module 15 and equal adjustable position and fixation, It grips and (is not shown in Fig. 1, embodiment can be found in embodiment 2) for cold source module 2 to be aligned with heat source module 1；

The square section product of heat source module 1 is 50 × 50mm in the present embodiment, and the section of wall thickness 2mm, cold source module 2 are long Rectangular long side is similarly 50mm, width 30mm.The rectangular long side in 2 section of cold source module and 1 section of heat source module are square The equal purpose of the side length of shape is in test can to need at most to fix 4 cold sources in the surrounding of heat source according to test to simulate Different operating conditions.

In embodiment in Fig. 1, thermoelectric power generation testing stand secures two on the two sides symmetrical above and below of heat source module 1 Same cold source module 2.When heat source module 1 and fixed cold source module 2, thermoelectric slice 4 is clamped in heat source module 1 and cold source module It between 2, successively arranges along thermal source outlet direction, preferably is set as equidistantly arranging by thermoelectric slice 4, quantity can be according to need It is arranged.In the present embodiment, it has respectively arranged up and down four 8 altogether, in other embodiments, when in hot end module surrounding It, can be among the surrounding and cold source module 2 of heat source module 1 when being all fixed with cold source module 2 and securing four cold source modules 2 All sandwiched thermoelectric slice 4, such as every one side are arranged 8, totally 32, are preferably set to equidistantly arrange.

The thermoelectric slice 4 produces the thermoelectric slice 4 of TG12-6-024 model using Marlow Industries.It is whole Size are as follows: huyashi-chuuka (cold chinese-style noodles) 40*40mm, hot face 40*44mm, thickness 3.3mm.

The present embodiment heats air by heater box 6, and is equipped with air-introduced machine 5 and leads to hot-air by hot-air Road is blown into the hollow channel of hot end module to be heated for hot end.Hot-air duct is provided between heater box and heat source module 14.In order to improve control security and validity to air-introduced machine 5 and heater box 6, distribution box realization can be added to the pipe of power supply Reason control.

In a particular embodiment, consider simulation outside air flow velocity the case where, can by adjust air-introduced machine 5 power come The flow velocity size for controlling air, preferably can be provided with pressure transmitter in the outlet end of hot end module, be used to real-time measurement The size of hot-air flow velocity.

In the present embodiment, cold source is radiated using natural cold air, in other embodiments can also be in cold end Modular surface Setting air-cooler carrys out simulated air radiating mode and accelerates radiating rate, configures pressure transmitter real-time measurement flow velocity size.In Embodiment below includes the improvement to the present embodiment, and radiate the test objective for reaching different by the way of water cooling.

It, can be to multiple cold ends when fixing multiple cold end modules around the module of hot end in other specific embodiments Module uses different radiating modes, and water-cooling and natural heat dissipation are combined, to realize a variety of uneven radiating modes, It is uneven to simulate thermoelectric power generation.

In the present embodiment, heat source module 1 and cold source module 2 all use red copper material, and red copper, which can be generally approximately considered, is Fine copper has excellent Dao Re ﹑ ductility and corrosion resistance.In order to reduce heat dissipation, entire testing stand all uses insulation resistant to high temperature Material package.In order to reduce thermal conduction resistance, cold source and heat source both ends held tight thermoelectric slice 4, and applied on 4 surface of thermoelectric slice Excellent, the reliable and stable Heat Conduction Material of upper heat-conductive characteristic, such as heat conductive silica gel or heat-conducting silicone grease.The present embodiment is in thermoelectric slice 4 Upper and lower surface all smears one layer of silver-colored silicone grease, realizes preferably heat transfer.

Embodiment 2: on the basis of above embodiments, a kind of thermoelectric power generation testing stand is provided, the three of module in hot end Face is fixed with cold end module, and all uses fixed supporting module 15 and the first self-clamping module 16 and the second self-clamping module 17 respectively, First self-clamping module 16, as shown in Figure 2.The first self-clamping module 16 and the second self-clamping module 17 in Fig. 2 are two metals Grip block, by fixed supporting module 15 respectively with offered on two metal grip blocks it is several for the logical of fixing bolt Hole, will be in the fixed supporting module 15 of grip block using screw bolt and nut.

In other embodiments, it also can be, but not limited to set fixed module to stay bolt, and respectively by the first folder It holds module 16 and the second self-clamping module 17 is respectively set to threaded fastener or nut to realize.

Embodiment 3: present embodiments providing embodiment when a kind of use water cooling method to a face cold source module 2, Other cold source modules 2 are by the way of natural heat dissipation；When the surrounding use more multi-freezing pipe module 2 in test in heat source module 1, Multiple cold source modules 2 need to be set as water-cooling, and implementation can refer to the present embodiment implementation.

On the basis of above embodiments, testing stand provided in this embodiment further includes at least two side partitions 18, side every 18 area size of plate is greater than the rectangular cross-sectional area of tubulose cold source module 2 and can be clamped to the two of tubulose cold source module 2 A rectangle end face, for stopping cold water to flow out from 2 side of cold source module in water cooling method.

Tapped through hole, tapped through hole difference are offered at the both ends of the single side along pipe shaft length direction of cold source module 2 For being sealedly and fixedly connected with cold water pipe 10 and outlet pipe.Fig. 3 is the utility model specific embodiment cold source module using water cooling The structural schematic diagram of mode；The first tapped through hole 12 is fixedly connected with cold water pipe 10 in Fig. 3, and cold water pipe 10 draws from catch basin 11 Cold water flows into cold end module tubulose hollow portion out, and cold water source can also be directly accessed tap water in other embodiments.Second screw thread Cold water is discharged for connecting outlet pipe for through-hole 13.In order to save water resource, it can will pass through what the second tapped through hole 13 was discharged Circulating chilled water utilizes.It is fixed to be realized using the prior art when side partition 18 is clamped to the both ends of tubulose cold source, it does not do herein It repeats, it is intended to not make cold water excessive from pipe ends.

In other embodiments, when being heated to heat source module 1 provided by the utility model, if using heating is passed through Hot water afterwards can also be implemented with reference to cold source access way in the present embodiment, and reasonably select the quantity of cold source module 2 and set Seated position.

Thermoelectric power generation testing stand provided by the utility model can pass through the different operating conditions of simulation arranged below:

1. when simulated automotive tail gas thermo-electric generation: intermediate heat source module 1 is passed through the distribution of hot wind or artificial setting temperature Water or vapor of the case after electric heating.Cold source radiates by the mode of 5 fan convection current of air-introduced machine, and flow velocity can artificially pass through distribution Case working frequency is adjusted.But usually cold source only use the side in four sides can, carry out the thermo-electric generation built in simulated automotive Effect；

2. simulate aviation thermo-electric generation: the portion that leads in the tubulose of intermediate heat source module 1 is connected with the high-temperature gas set, Cold source is connected with water cooling and radiates by convection, can four sides all water flowings；

3. simulating human body sensor thermoelectric generator: for heat source with the gas of human surface temperature, cold source is the extraneous temperature of nature Degree.Simulate a single plane heat source, a face cold source.The small voltage of sending, pressure stabilizing and liter by DC-DC converter The effect of pressure can guarantee the charge function of normal electronic device completely.

The utility model can simulate the operating condition of test of the larger temperature difference, compare to each operating condition, it may be assumed that empty in same heat Gas velocity, in the case where temperature, which kind of refrigeration modes preferably realizes the biggish temperature difference, can be with by manufacturing big temperature difference mode Realize high efficiency thermoelectric power generation.

Implement 4: on the basis of above embodiments, in order to measure the hot and cold side temperature of thermoelectric slice 4, in 1 He of heat source module Among cold source module 2 be arranged thermoelectric slice 4 position opposite inner face setting fluted 8, for accommodate T-type thermocouple 3 (constantan and Copper wire is closely wound composition) it is embedded into groove 8, and fit closely not that there are contacting external airs, as shown in Figure 4 and Figure 5. The T-type thermocouple 3 of 0.2mm (constantan and copper wire form) is embedded into groove 8 in the present embodiment, measures heat using thermocouple 3 The temperature of electric 4 hot and cold side of piece.

The present embodiment guarantees the cold junction temperature of thermocouple 3 using mixture of ice and water to improve the precision that test measures For zero degrees celsius, as Fig. 4 show be provided with cold water vessels 7 for store 0 ° of mixture of ice and water.

The thermoelectrical potential that thermocouple 3 generates in actual measurement, is protected since the temperature difference of the hot and cold side of thermocouple 3 determines It is bad realization that cold end, which is held, as zero degrees celsius.Therefore 3 compensating wire of thermocouple can be used also in other embodiments to subtract The gap of few cold end and zero degrees celsius.The effect of 3 compensating wire of thermocouple only plays extension thermode, moves the cold end of thermocouple 3 It moves on the instrument terminals of control room, itself can not eliminate influence of the cold junction temperature variation to thermometric, not redeeming. Therefore, influence when also needing to compensate cold junction temperature t0 ≠ 0 DEG C using other modification methods to thermometric.It is mended using thermocouple 3 It must be noted that model matches when repaying conducting wire, polarity is unable to wrong, and compensating wire and the temperature of 3 connecting pin of thermocouple cannot surpass 100 ℃。

In other embodiments, if the comparison of thermoelectric slice 4 is more, many thermocouple wires 19 are drawn, then it can will be several Thermocouple wire 19 is by rectangular insert connector 23, then accesses digital analog converter interface such as the port this ADAM4017.Equally in list In the case of a thermoelectric slice or other connection types composition thermoelectric unit, the positive and negative anodes at both ends are drawn by conducting wire, pass through rectangular insert Connector 23, then the port ADAM4017 is accessed, and then open circuit or closed circuit voltage are shown by host computer.

ADAM-4017/4017+ is the Analog input mModule 22 in 16 8 channels A/D, can be with collection voltages, electric current etc. Analog input signal.It both provides programmable input range for all channels, these modules are commercial measurement and monitoring Application in good cost performance is provided；And it analog input channel and module between additionally provide the voltage of 3000V Isolation, thus effectively prevents module from damaging when by impacting with high pressure.ADAM-4017 supports 6 tunnel difference, and 2 tunnels are single-ended Signal, input range +/- 150mV, +/- 500mV, +/- 1V, +/- 5V, +/- 10V, +/- 20mA.If test current signals, need Input port one 125 ohm of precision resistance in parallel in the channel.

ADAM-4017+ supports 8 road differential signals, also support Modbus agreement.Each channel can be independently arranged it and input model It encloses, while having used a toggle switch on the right side of module the switching of INT* and normal operating conditions is arranged, 4017+ also increases The input range of 4~20mA does not need outer connecting resistance when measuring electric current, need to only open the lid, setting wire jumper to △. When it is implemented, if type of attachment to thermoelectric slice 4 or changing to the construction profile of cold source module 2 or heat source module 1 Become, in order to avoid the structural modification of single unit system, rectangle can be coupled in the exit of thermoelectric slice 4 and one end of digital analog converter Pin connector 23, structure chart such as Fig. 6 are shown.Rectangular insert connector 23 need to only be separated, acquisition system and thermoelectricity is caused to send out Electric system mutually separates, and is able to carry out test transformation, be independent of each other, and connects rectangular insert connector 23 after the completion of transformation herein Entire pilot system can be reformulated.

Embodiment 5: on the basis of above embodiments, in the present embodiment, simulate different MPPT (maximum power point with Track, Maximum Power Point Tracking) control method thermoelectric power generation effect.When doing maximum power test, It first determines one of hot and cold side operating condition, under system stable case, the verifying of Seebeck effect is carried out to each unit；To heat Electric 4 internal resistance of piece calculates internal resistance size using the formula of open-circuit voltage and load current；And then it is fitted using least square method, construction Power source model.MPPT algorithm is incorporated into MPPT controller.It can complete the MPPT algorithm of several classics such as: disturbance observation；Electricity Lead increment: open-circuit voltage etc. compares, or even is innovated on this basis in the hope of realizing efficient maximal power tracing.

The present embodiment includes 32 thermoelectric slices 4, and each thermoelectric slice 4 requires the temperature that hot and cold side is measured using thermocouple 3 Degree, and the thermocouple wire 19 for thering is constantan and copper wire tightly to wind, therefore in embodiment, by several thermocouple wires 19 of extraction Connect digital analog converter interface.

The present embodiment further includes data collection system, and the present embodiment structural schematic diagram is shown in Fig. 7, by voltage sensor (in figure Be not shown), current sensor (not shown) and pressure transmitter (not shown), Analog input mModule 22 and be used for The ADAM4017 or ADAM4018 and host computer 20 for connecting the Yan Hua company production of several thermocouple wires 19 are formed, and are controlled by load The access of the control load of molding block 21, to carry out the test of open circuit and closed circuit.Load controller is one sliding in the present embodiment Dynamic rheostat.By ADAM4060 realize control open circuit with it is closed circuit, which is very suitable to switch control or low tension switch and controls Application.The voltage sensor, current sensor and pressure transmitter are existing product, are measured using voltage sensor closed circuit Voltage and open-circuit voltage, current sensor measure electric current, so that it may calculate the real-time internal resistance of thermoelectric slice, pressure transmitter is used for flow velocity Acquisition, the data acquired in the present embodiment specifically include: the voltage when closed current of thermoelectric slice 4, voltage and open circuit, respectively The physical quantitys such as the flow velocity of temperature difference between the two ends, distribution box outlet temperature, water temperature and gas or liquid when a 4 open and close road of thermoelectric slice And the analog output for measuring multiple sensors connects Analog input mModule 22, is transmitted by RS485 agreement transmission line It is shown and stores on to host computer 20, Simulation Application MCGS configuration software, settable data collection cycle, such as every 5s acquire Once.

Embodiment 6:

Due to the self-produced electric energy very little of thermoelectric power generation piece, from practical application mostly in series connection or mixed connection, due to Under different operating conditions, heating surface area or cold end radiating surface be certainly it is non-uniform, the maximum power of the power generation of each thermoelectric slice 4 is not Equally, so needing to carry out distributed consideration.

Since module self-characteristic difference and space thermal energy such as are unevenly distributed at the influence of factors, the centralized thermoelectric power generation System not can guarantee the maximization of each module generated output.In addition nature practical situations are unlikely to be 4 surface of thermoelectric slice Uniformly heat absorption will simulate the heated situation of hot-air imbalance for the modeling of closing to reality.

In a particular embodiment, it is each provided with cold source module 2 respectively in the surrounding of hot end module, and hot end module is every Sandwiched 8 thermoelectric slices 4 between a face and single cold source module 2 can be that a unit is serially connected with surrounding, can also be by four It is 4 groups that the thermoelectric slice 4 in week, which is divided, and monolithic forms one group, and one group 8, the series connection of front and back two panels, waits a variety of thermoelectric units to connect on one side. The usually temperature difference highest of outlet end, with heat dissipation and the energy consumption of the mutual heat to electricity conversion of thermoelectric slice 4, thermoelectricity unit The front and back temperature difference can be gradually reduced, and here it is described imbalance heat transfers, so each thermoelectric unit electrical characteristic is different, area It does not treat.Caused by this distributed generation resource be to realize each maximal power tracing, to be usually equipped with Energy Management System, with Ask each thermoelectric unit that can keep maximum power point in real time.

As shown in figure 8, be connected after thermoelectric unit block coupled in series with centralized unit, each thermoelectric unit again with respective distribution Unit is connected, and each distribution unit output end is all in parallel with the output end of centralized unit, the maximum power output of each thermoelectric unit by Centralized Energy Management System and distribution energy management system are realized jointly, can also rely on centralized and distributed work respectively With the gap and efficiency both compared verifies the conclusion of two methods.

Embodiment 7: on the basis of embodiment 6, in the specific implementation, because the self generating power of thermoelectric slice 4 is not high, So adding DC-DC boost converter in the present embodiment under the premise of improving conversion efficiency of thermoelectric, its boosting inverter original is utilized Reason further promotes voltage, is able to ascend the carrying load ability of thermoelectric slice 4, improves the actual application ability of thermoelectric slice 4, MPPT control The structural block diagram of device processed and DC-DC boost converter can be found in Fig. 9.

For the selection inductance for being suitable for the conversion of small-power high-frequency electromagnetic of BOOST booster circuit, reasonable charge and discharge Capacitor, be suitable for that voltage rating is low, and electric current is relatively large, high-frequency signal, the metal-oxide-semiconductor that threshold voltage is low, direct insertion.Therefore it selects With the electronic device for the DC-DC boost converter for being suitable for thermoelectric power generation.Cdc=47uF, 25V；L=10mH；Co=330uF, 25V；MOS=2SK1960,16V, 3A, N-channel；D=germanium tube 0.33V.

It is power end with distribution or centralized thermoelectric slice 4, is connected to DC-DC boost converter, controls opening for booster converter It closes and is connected to MPPT controller at pipe, the PWM wave issued can control its input voltage, reach maximum power point.

Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art Member for, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these improve and Deformation also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of thermoelectric power generation testing stand, characterized in that including cold source module, heat source module, air-introduced machine, heater box；It is described cold Source module and heat source module are hollow tubular modules；The section of the heat source module is square, the section of the cold source module For rectangle, the rectangular long side in cold source module section is equal with the side length of heat source module cross-sectional square shape；

The testing stand further includes fixed supporting module and the first self-clamping module and the second self-clamping module, the first clamping mould Block and the second self-clamping module are set to the both ends of fixed supporting module and equal adjustable position and fixation, for by cold source module with Heat source module alignment grips；The cold source module and heat source module pass through fixed supporting module, the first self-clamping module and the It, can at least one sandwiched thermoelectric slice between cold source module and heat source module when two self-clamping modules grip；

It is provided with hot-air channel between the heater box and heat source module, air-introduced machine is set in the other end of heater box.

2. thermoelectric power generation testing stand according to claim 1, characterized in that further include at least two side partitions, the side Partition area size is greater than the rectangular cross-sectional area of tubulose cold source module and can be clamped to two of tubulose cold source module Rectangle end face, for stopping cold water to go out from cold source module side surface current in water cooling method.

3. thermoelectric power generation testing stand according to claim 2, characterized in that in the cold source module along pipe shaft length side To the both ends of single side offer tapped through hole, the tapped through hole is respectively used to and the cold source pipe and water outlet seal of tube is fixed connects It connects.

4. thermoelectric power generation testing stand according to claim 1, characterized in that sandwiched among heat source module and cold source module The position opposite inner face setting of thermoelectric slice is fluted, the hot and cold side for being embedded into measurement thermoelectric slice in groove for accommodating thermocouple Temperature.

5. thermoelectric power generation testing stand according to claim 1, characterized in that several thermocouple wires are accessed digital analog converter Interface.

6. thermoelectric power generation testing stand according to claim 1, characterized in that the testing stand further includes data acquisition system System, the data collection system include voltage sensor, current sensor, pressure transmitter, Analog input mModule and are used for Connect the digital analog converter and host computer of several thermocouple wires, the voltage sensor, pressure transmitter and current sensor The analog quantity measured accesses Analog input mModule and is transmitted to host computer.

7. thermoelectric power generation testing stand according to claim 6, characterized in that the testing stand further includes load control mould Block carries out the test of open circuit and closed circuit by the access of load control module control load.

8. thermoelectric power generation testing stand according to claim 1, characterized in that several thermoelectric slices are passed through different series connection groups Conjunction mode forms multiple thermoelectric units, and is equipped with Energy Management System for each thermoelectric unit and realizes that each thermoelectric unit is real-time Keep maximum power.

9. thermoelectric power generation testing stand according to claim 8, characterized in that it further include DC-DC boost converter, it is described MPPT controller is connected at the switching tube of DC-DC boost converter, the PWM wave issued controls input voltage, reaches maximum work Rate point.

10. thermoelectric power generation testing stand described in any one claim according to claim 1~9, characterized in that the cold source Module and heat source module use red copper material.