CN223967809U - A thermal energy storage device that generates electricity using temperature difference - Google Patents

Abstract

A thermal energy storage device utilizing thermoelectric power generation, belonging to the field of energy storage equipment technology, includes a PLC, a raft plate device, a temperature detection module, a thermal storage module, an insulation module, an inner shell, an outer shell, a power generation module, finned heat sinks, and an electric heater. Multiple insulation modules are installed inside the inner shell, with the upper insulation module having heat-conducting grooves. The raft plate device is installed on both sides of the heat-conducting grooves, and multiple thermal storage modules are installed inside the insulation modules. The electric heater is installed inside the multiple thermal storage modules. The inner shell is installed inside the outer shell, multiple power generation modules are installed inside the outer shell, and multiple finned heat sinks are installed on the outer shell. This novel structure is relatively simple and compact, low in cost, and easy to use. It can connect the electric heater to heat the thermal storage modules during specific time periods, and control the power generation module to supply power to the load during peak electricity consumption periods. The finned heat sinks improve the speed and effect of the heat transfer to the heating surface of the thermal power generation module, thereby relatively increasing the power generation capacity.

Description

Heat storage and electricity storage device utilizing temperature difference to generate electricity

Technical Field

The utility model relates to the technical field of power equipment, in particular to a heat storage and electricity storage device utilizing thermoelectric power generation.

Background

At present, in the energy storage field, a lithium battery is generally used as an energy storage battery to store surplus electric energy generated by photovoltaic power generation and electric energy in a low-peak period of mains supply, and the electric energy is released in a power supply peak period to ensure that a power supply circuit is stably supplied with power for a power utilization load (or directly supplies power for the power utilization load). However, the lithium battery used as an energy storage device has the following defects in the application process due to the limited structure, (1) the lithium battery cannot be overdischarged, otherwise the service life of the lithium battery is shortened, and the explosion danger is caused when the temperature is too high in the charging and discharging process, (2) the current cycle life of the lithium battery is about 8 years, the service life is relatively short, the application temperature is between-20 ℃ and 75 ℃, particularly the low temperature performance is poor (the charging and discharging capability is poor when the temperature is too low), so the use environment is limited.

The heat storage power generation is a novel power generation mode and has the following advantages. The heat storage power generation technology has the advantages of being capable of storing heat energy for a long time and not large in ‌, small in occupied area, small in environmental influence, free of limitation of geography and environmental conditions, free of chemical reaction in the storage and release process, controllable in technical parameters and processes, high in system safety and ‌, capable of adapting to various energy grades, achieving combined supply of cold, heat, electricity and steam, meeting requirements of different users, further capable of conducting peak shaving and valley filling and bidirectional adjustment on a regional power grid, absorbing intermittent new energy (such as wind power and photovoltaic), being a better solution ‌ of balancing peak and valley difference of the power grid, capable of achieving large-scale heat storage cycle time and long in energy storage cycle efficiency ‌, and capable of achieving long-time bidirectional adjustment of the heat storage power generation ‌. Although the existing heat storage power generation has more advantages compared with the lithium storage battery power storage, the existing heat storage power generation has the following technical defects due to the limitation of the functions of the existing heat storage power generation. Specifically, the existing heat storage power generation equipment is generally used for a larger load power supply area, has a relatively complex equipment structure and relatively high cost, and is not suitable for a small-range power utilization area with relatively low investment. In addition, in the power generation, when the heat released by the heat storage module acts on the heating surface of the thermal power generation module (power generation module), the natural radiation mode is relied on, the heat release speed and effect are relatively low, and the power generation capacity is relatively low.

Disclosure of utility model

In order to overcome the defects of the prior heat storage power generation, which are caused by the limited structure and the background technology, the utility model provides the heat storage power storage device which is relatively simple and compact in structure, low in cost, convenient to use, applicable to various places (adopting different sets of combinations according to the needs and applicable to areas with large power supply load or small power supply load), capable of improving the heat dissipation capacity of the heat storage module through the fin type radiating fins during heat release, further improving the speed and effect of acting on the temperature of the heating surface of the heat generation module and relatively improving the power generation capacity.

The technical scheme adopted for solving the technical problems is as follows:

The heat storage and electricity storage device utilizing temperature difference to generate electricity comprises a PLC, a raft device, a temperature detection module, a heat storage module, a heat preservation module, an inner shell, an outer shell, a power generation module, wing type radiating fins and an electric heater, wherein the raft device comprises a motor speed reducing mechanism, a raft plate and a bearing seat, the heat preservation module, the heat storage module, the power generation module and the wing type radiating fins are respectively arranged in the inner shell, the heat preservation module at the upper end is provided with a heat conducting groove, the bearing seat and the motor speed reducing mechanism are respectively arranged at two side ends of the heat conducting groove, the heat storage modules are respectively arranged in the heat preservation module, the electric heater is arranged in the heat storage modules, the inner shell is arranged in the outer shell, the power output ends of the temperature difference heating modules and the power input ends of electric loads are respectively and electrically connected, the wing type radiating fins are arranged at the outer side of the outer shell, and the detection heads of the two sets of the temperature detection modules are respectively arranged in the inner shell and the outer shell.

Further, the inner shell, the outer shell and the fin-type radiating fins are made of metal materials.

Further, the heat storage module is a magnesia brick, and the heat preservation module is a ceramic aluminum silicate brick.

Further, the power generation module is a thermoelectric power generation module.

Further, a distance is formed between the heating surface of the thermoelectric generation module and the outer side end of the inner shell.

Further, in the raft equipment, the bearing seat and the motor speed reducing mechanism are respectively arranged at two sides of the heat conducting groove, one end of the raft is rotatably arranged in the bearing seat, and the rotating shaft of the motor speed reducing mechanism is arranged at the other end of the raft.

Further, the raft is a metal material, and a heat insulating layer is installed at a front end thereof.

Furthermore, the PLC can also be replaced by one of a singlechip module and an upper computer.

Compared with the prior art, the novel heat storage device has the advantages that the novel heat storage device is relatively simple and compact in structure, low in cost and convenient to use, is suitable for being used in various places (different sets of combinations are adopted according to requirements, and are suitable for being used in areas with large power supply load or small power supply load), under the mature PLC signal receiving processing and controlling effect, an electric heater can be connected to heat storage modules for heating in a specific time period (a power consumption low-peak time period of a relevant power supply area), a power generation module can be controlled to supply power for the power consumption load in the power consumption high-peak time period, and the heat dissipation capacity of the heat storage modules can be improved through the fin type radiating fins when heat is released, so that the speed and effect on the temperature of a heating surface of the thermal power generation module are improved, and the power generation capacity is relatively improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic overall perspective view of the present utility model (the housing and fin type heat sink are not shown).

Fig. 2 is a schematic view of a planar partial structure of the present utility model.

Fig. 3 is a circuit diagram of the present utility model.

Detailed Description

The heat storage and electricity storage device utilizing temperature difference to generate electricity comprises a PLC, a raft device 1, temperature detection modules W1 and W2, a heat storage module 2, a heat preservation module 3, an inner shell 4, an outer shell 5, a power generation module FD, wing type radiating fins 6 and an electric heater RT, wherein the raft device comprises a motor speed reduction mechanism M (200W heat-resistant coaxial motor gear speed reducer finished product), a raft 101 and a bearing seat 102, the outer shell 5 and the inner shell 4 are of rectangular hollow structures, the upper end of the inner shell 4 is of an open structure, the heat preservation module 3, the heat storage module 2, the power generation module FD and the wing type radiating fins 6 are respectively arranged at the inner side lower end, the upper end, the front and rear left and right ends of the inner shell 4, the plurality of heat preservation modules 3 are respectively and fixedly arranged at the inner side lower end, the upper end, the front and rear left and right ends of the inner shell 4 are respectively in a sealing manner, the upper end of the upper end heat preservation module 3 is transversely provided with a rectangular heat conducting groove 31, the raft device 1 is arranged at the two sides of the heat conducting groove 31, the plurality of heat preservation modules 2 are respectively and fixedly arranged at the inner side lower end, the upper end, the front and rear left and right ends of the inner shell 4 are respectively arranged at the inner side lower end of the hollow heat preservation module 4 in a sealing manner, the hollow heat storage module is respectively, the front and right end is respectively arranged at the front and right end of the upper end 5 and the heat storage module is respectively and the front and the upper end is respectively fixedly arranged at the upper end and the upper and 5 and is respectively.

As shown in fig. 1, 2 and 3, the inner case 4, the outer case 5 and the fin 6 are made of steel and copper, respectively. The electric heater RT is a stainless steel sheathed dry-burning electric heating pipe finished product, the heat storage module 2 is a magnesia brick, and the heat preservation module 3 is a ceramic aluminum silicate brick. The power generation module FD is a thermoelectric power generation module (6V) of model SP1848-27145, and the heating surface of the thermoelectric power generation module FD is positioned at the inner side end of the shell 5. The distance between the heated surface of the thermoelectric generation module FD and the outer side end of the inner casing 4 serves as a heat flow path 7. The two sets of temperature detection modules W1 and W2 (the analog temperature and humidity sensor with the model number of AM 1011A) are provided with two power input ends and one signal output end, and the model number of the PLC is Siemens PLC industrial control board SMART200. In the raft equipment, a bearing seat 102 and a motor speed reducing mechanism M are respectively and fixedly arranged at the left side and the right side of the rear end of a heat conducting groove 31, two ends of the rear side of a raft 101 are respectively welded with a shaft rod, the shaft rod at the left end is tightly sleeved in a bearing inner ring of the bearing seat 102, the left side end of a rotating shaft of the motor speed reducing mechanism M is welded with the shaft rod at the right side of the raft 101, and when the raft 101 is in a horizontal structure forwards, the lower end of the raft 101 is completely sealed with the heat conducting groove 31. The raft 101 is made of metal, and has a heat insulating layer fixedly mounted on the front side thereof to perform a heat insulating function (such as a glass wool layer or an aluminum silicate wool layer). The front side ends of the temperature control probes 8 of the two sets of temperature detection modules are respectively positioned at the right side of the upper side in the heating cavity and the right side of the upper side in the outer shell 5, wires connected with the electric heater RT and the temperature control probes 8 of the two sets of temperature detection modules are sleeved in a plurality of insulating ceramic tubes, and then are led out outwards from side openings of one heat storage module 2, the heat preservation module 3 and the inner shell 4 (the openings are sealed by heat-resistant sealant). The PLC can also be replaced by one of a singlechip module and an upper computer.

In fig. 1, 2 and 3, the power input ends 1 and 2 pins of the two sets of temperature detection modules W1 and W2, the power input end of the PLC and the two poles of the ac 220V power supply are respectively connected by wires, the signal output ends 3 pins of the two sets of temperature detection modules W1 and W2 and the signal input ends 3 and 4 pins of the PLC are respectively connected by wires, the power output ends 5, 6 pins, 7 and 8 pins of the PLC are respectively connected with the motor reducing mechanism M and the power input end of the electric heater RT by wires, the control power input ends 9 and 10 pins of the PLC are connected with the power supply end (such as a photovoltaic power generation plate or a power supply outputted by a power supply circuit) by wires, and the power output ends of the plurality of thermoelectric heating modules FD are connected in parallel or series by wires and connected with the power load (such as the power input end of the power inverter is connected by wires), and the power output end of the power inverter is connected with the power input end of the power load by wires) is connected by wires. The two sets of temperature detection modules W1 and W2 and the PLC are arranged in the electric cabinet.

In the specific prior art, the existing heat storage power generation equipment is generally used for a larger load power supply area, has a relatively complex equipment structure and relatively high cost, is not suitable for a small-range and relatively low-investment power utilization area, is relatively simple and compact in structure, low in cost and convenient to use, and is suitable for various places (different sets of combinations are adopted according to requirements, and is suitable for areas with large power supply load or small power supply load). After the PLC gets the electricity, the power supply end is connected with the electric heater to heat in a specific time period (the electricity consumption low peak time period of a relevant power supply area) under the action of an internal circuit, the electric heater RT gets the electricity to heat the heat storage module 2 (the heat preservation module 3 can preserve the heat of the heat storage module 2 and improve the heat preservation capability of the heat storage module 2), when the temperature in a heating cavity is lower than a certain temperature (such as lower than 1 ℃ C.), the temperature voltage signal output by the temperature detection module W1 enters the first path signal input end of the PLC, the PLC controls the power supply to enter the power supply input end of the electric heater RT, the electric heater RT continues to get the electricity to heat the heat storage module 2, when the temperature in the heating cavity is higher than a certain temperature (such as higher than 1 ℃ C.), the temperature voltage signal output by the temperature detection module W1 enters the first path signal input end of the PLC, the PLC stops outputting the power supply to enter the power supply input end of the electric heater RT, the electric heater RT does not continue to get the electricity to heat the heat storage module 2, and the electric heater RT can be heated in the specific time period And the heat storage module can be ensured to be at a constant temperature, so that abnormal operation of the heat storage module (such as deformation of the heat storage module caused by overhigh temperature and probability) caused by insufficient heat storage capacity and overhigh temperature can be prevented. In the electricity consumption peak time period, the PLC is connected with the positive and negative power input ends of the motor reducing mechanism M under the action of an internal circuit of the PLC, and the rotating shaft of the motor reducing mechanism M can drive the valve plate 101 to rotate to a nearly vertical state, so that the valve plate is arranged in a hollow heating cavity formed by a plurality of heat storage modules 2, the heat emitted by the heat storage module gradually enters a hot runner between the inner shell and the outer shell, the heat acts on heating surfaces of the power generation modules FD, the power generation modules FD generate electric energy to supply power for an electric load, specifically, when the heat output by the heat storage module is higher than a certain temperature (such as higher than 110 ℃), a temperature signal output by the temperature detection module W2 enters a second signal input end of the PLC, the PLC controls a negative and positive power input end of the motor reducing mechanism M to be powered on, a rotating shaft of the motor reducing mechanism M drives the valve plate 101 to rotate forward by a certain angle, so that the raft plate 101 shields a part of the heat conducting groove 31, the heat output by the heat storage module FD is relatively low, the power generation modules FD are prevented from working abnormally due to the fact that the temperature is excessively high, and when the heat output by the heat storage module is lower than a certain temperature (such as lower than 110 ℃), the temperature signal output by the temperature detection module W2 enters the second signal input end of the PLC, the positive and negative and positive power input ends of the motor reducing mechanism M drive the valve plate 101 to rotate backward by a certain angle, and thus the heat conducting groove 31 is shielded, the heat storage module FD is prevented from being relatively low, and the power generation module FD is prevented from working abnormally due to excessively high.

As shown in fig. 1, 2 and 3, through the above, the utility model can switch on the electric heater for heating the heat storage module in a specific time period (the low peak time period of electricity consumption in the relevant power supply area) under the mature PLC signal receiving, processing and controlling actions, and can control the power generation module for supplying power to the electricity consumption load in the high peak time period of electricity consumption, and the heat dissipation capacity of the heat storage module is improved through the fin type heat dissipation sheet 6 during heat release, so that the speed and effect for acting on the temperature of the FD heating surface of the thermal power generation module are correspondingly improved, and the power generation capacity is relatively improved. It should be noted that, the present technology is very mature, the present application does not protect the above technical scheme, and does not describe the working principle of the present application.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is limited to the details of the foregoing exemplary embodiments, and that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, the embodiments do not include only a single embodiment, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and embodiments may be suitably combined to form other embodiments that will be understood by those skilled in the art.

Claims (8)

1. The heat storage and electricity storage device utilizing the temperature difference to generate electricity comprises a PLC, a raft device, a temperature detection module, a heat storage module, a heat preservation module, an inner shell, an outer shell, a power generation module, a fin type radiating fin and an electric heater, and is characterized in that the raft device comprises a motor speed reducing mechanism, a raft and a bearing seat; the heat preservation module, the heat storage module, the power generation module and the fin type cooling fins are respectively arranged in the inner shell, the heat preservation module at the upper end is provided with a heat conduction groove, the bearing seat and the motor speed reducing mechanism are respectively arranged at two side ends of the heat conduction groove, the heat storage modules are respectively arranged at the inner sides of the heat preservation module, the electric heater is arranged in the heat storage modules, the inner shell is arranged in the outer shell, the power generation modules are respectively arranged at the inner sides of the outer shell, the power output ends of the temperature difference heating modules are electrically connected with the power input ends of the electric loads, the fin type cooling fins are arranged at the outer sides of the outer shell, and the detection heads of the two sets of temperature detection modules are respectively arranged in the inner shell and the outer shell.

2. The heat storage and power storage device utilizing temperature difference to generate power according to claim 1, wherein the inner shell, the outer shell and the fin type radiating fins are made of metal materials.

3. The thermal storage and power generation device utilizing temperature difference to generate power according to claim 1, wherein the thermal storage module is a magnesia brick and the heat preservation module is a ceramic aluminum silicate brick.

4. The thermal storage and power generation device utilizing temperature difference as claimed in claim 1, wherein the power generation module is a temperature difference power generation module.

5. The thermal storage and power generation device using temperature difference as claimed in claim 4, wherein a distance is provided between the heating surface of the thermoelectric generation module and the outer side end of the inner case.

6. The heat storage and power storage device utilizing temperature difference to generate power according to claim 1, wherein in the raft equipment, bearing blocks and motor speed reducing mechanisms are respectively arranged on two sides of the heat conducting groove, one end of each raft is rotatably arranged in the bearing block, and a rotating shaft of each motor speed reducing mechanism is arranged at the other end of each raft.

7. The heat storage and power storage device using temperature difference for power generation according to claim 6, wherein the raft is made of metal material and has a heat insulation layer installed at a front end thereof.

8. The thermal storage and power generation device utilizing temperature difference as claimed in claim 1, wherein the PLC can also be replaced by one of a single chip module or an upper computer.