A blade thermoelectric battery cycle power generation system under dual thermoelectric power generation mode

Abstract

This invention relates to the field of thermoelectric chemical temperature difference power generation technology, specifically a blade thermoelectric battery cyclic power generation system under a dual temperature difference power generation mode. It solves the problem that existing systems suffer from heat loss due to the interaction between the heat source and cold source and individual battery modules, leading to incomplete utilization of waste heat and some energy waste, which limits power generation to a certain extent. The system includes a heat treatment component, a TGC module, a TREC module, a main electrolyte channel, and a secondary electrolyte channel. Multiple TREC modules are installed on one side of the heat treatment component, and a TGC module is inserted between every two adjacent TREC modules. The multiple TGC modules and TREC modules are arranged alternately. This invention uses a TGC module as an intermediate heat exchange medium in the blade thermoelectric battery, further utilizing waste heat, avoiding heat loss, fully developing the potential of thermoelectric power generation, and achieving a further increase in waste heat thermoelectric power generation capacity.

Description

Technical Field

[0001] This invention relates to the field of thermoelectric chemical temperature difference power generation technology, specifically a blade thermoelectric battery cycle power generation system under dual temperature difference power generation mode. Background Technology

[0002] Thermoelectric cells, also known as Seebeck cells, are energy conversion devices based on the Seebeck effect. They are widely used in communications, medical, and aerospace fields. Their principles can generally be divided into those based on spatial temperature difference and those based on temporal temperature difference. Thermoregenerative electrochemical cycle (TREC) based on temporal temperature difference refers to an electrochemical cycle system that uses time temperature difference for thermoelectric conversion, including four processes: heating, charging, cooling, and discharging. Thermoelectric cell based on spatial temperature difference (TGC) is a battery driven by spatial temperature difference. Unlike TREC, thermoelectric cells generate a temperature gradient by applying different temperatures to two symmetrical electrodes, and achieve the potential difference based on diffusion effect and electrochemical redox reaction.

[0003] Existing systems suffer from heat loss due to the interaction between the heat source and the cold source with individual battery modules, resulting in incomplete utilization of waste heat and some energy waste, which limits power generation to a certain extent. Therefore, they do not meet current requirements. To address this, we propose a blade thermoelectric battery cycle power generation system under a dual thermoelectric power generation mode. Summary of the Invention

[0004] The purpose of this invention is to provide a blade thermoelectric battery cycle power generation system under dual thermoelectric power generation mode, so as to solve the problem mentioned in the background art that the existing system has certain heat loss between the heat source and the cold source and the individual battery module, resulting in incomplete utilization of waste heat and some energy waste, which limits the power generation to a certain extent.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a blade thermoelectric battery cycle power generation system in dual thermoelectric power generation mode, comprising a heat treatment component, a TGC module, a TREC module, an electrolyte main channel, and an electrolyte branch channel. Multiple TREC modules are installed on one side of the heat treatment component, and a TGC module is inserted between each pair of adjacent TREC modules. The multiple TGC modules and TREC modules are arranged alternately. An electrolyte main channel is provided between one end of each TGC module and the heat treatment component. The heat treatment component includes a waste heat collection device and a cooling device. Both sides of each TGC module are in contact with two adjacent TREC modules.

[0006] Preferably, two of the TGC modules are connected to the waste heat collection device and the cooling device through the main electrolyte channel, and an electrolyte branch channel is provided between the ends of each two adjacent TGC modules, and each two adjacent TGC modules are connected through the electrolyte branch channel.

[0007] Preferably, thermally conductive adhesive is applied between the TGC module and the TREC module, and the TGC module and the TREC module are bonded and fixed together by the thermally conductive adhesive.

[0008] Preferably, the TREC module includes a TREC battery pack and a first heat exchange component, the first heat exchange component covering the outside of the TREC battery pack. The TREC battery pack includes a positive electrode, a negative electrode, a positive electrode liquid, a negative electrode liquid, and an ion exchange membrane. The ion exchange membrane is disposed between the positive electrode and the negative electrode. The positive electrode liquid fills the space between the positive electrode and the ion exchange membrane, and the negative electrode liquid fills the space between the negative electrode and the ion exchange membrane. The TGC module includes a TGC and a second heat exchange component, the second heat exchange component covering the outside of the TGC. The TGC includes a cold electrode and a hot electrode. Thermocouples are installed on the surfaces of the positive electrode, the negative electrode, the cold electrode, and the hot electrode.

[0009] Preferably, both the first heat exchange component and the second heat exchange component are composed of a heat storage medium and a plurality of heat exchange plates, wherein the heat storage medium is filled into the interior of the heat exchange plates, and the plurality of heat exchange plates are arranged linearly.

[0010] Preferably, the waste heat collection device includes a heat transfer device and a heat absorption medium, wherein the heat absorption medium is a common heat transfer fluid such as water or heat transfer oil; the cooling device includes a heat transfer device and a cooling medium, wherein the cooling medium is water or air; both the heat absorption medium and the cooling medium are filled into the interior of the heat transfer device; the interior of the main electrolyte channel and multiple electrolyte branch channels are filled with electrolyte; and both the heat absorption medium and the cooling medium are separated from the electrolyte by the heat transfer device.

[0011] Preferably, the electrolyte flows through multiple TGC modules, electrolyte branch channels, and electrolyte main channel. The beginning and end of the electrolyte flow are connected to a waste heat collection device and a cooling device. The waste heat collection device absorbs the heat from low-grade waste heat through a heat-absorbing medium and transfers it to the electrolyte. The low-grade waste heat includes industrial waste heat, flue gas waste heat, data center waste heat, and solar heat.

[0012] Preferably, the TREC module absorbs heat through the first heat exchange component and maintains the TREC module at a high temperature, the TGC module absorbs heat through the second heat exchange component and maintains the hot and cold electrodes in the TGC module at a temperature difference, and the TGC module outputs continuous electrical energy based on diffusion effect and thermoelectric effect.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention utilizes a TGC module inserted between every two TREC modules in a plurality of TREC modules. The waste heat collection and cooling devices sequentially transfer heat and cold energy within the TGC modules via electrolyte. By employing the TGC module group as the heat exchange intermediate medium in the blade thermoelectric battery, simultaneous heating and cooling of multiple TREC modules can be achieved, enabling simultaneous output of high-voltage and low-voltage electricity. Furthermore, the TREC modules can further utilize waste heat, fully developing the thermoelectric power generation potential, and using the waste heat temperature difference for cyclic power generation, thereby further increasing the power output. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of the waste heat collection device of the present invention;

[0016] Figure 2 This is a schematic diagram of the installation structure of the cooling device of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation structure of the TGC module of the present invention;

[0018] Figure 4 This is a schematic diagram of the installation structure of the electrolyte branch channel of the present invention.

[0019] In the diagram: 1. Waste heat collection device; 2. TGC module; 3. TREC module; 4. Main electrolyte channel; 5. Cooling device; 6. Branch electrolyte channel. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figure 1 and Figure 2 The present invention provides an embodiment of a blade thermoelectric battery cycle power generation system in a dual thermoelectric power generation mode, comprising a heat treatment component, a TGC module 2, a TREC module 3, an electrolyte main channel 4, and an electrolyte branch channel 6. Multiple TREC modules 3 are installed on one side of the heat treatment component, and a TGC module 2 is inserted between each two adjacent TREC modules 3. The multiple TGC modules 2 and TREC modules 3 are arranged alternately. Each TGC module 2 is in contact with two adjacent TREC modules 3 on both sides. Thermally conductive adhesive is applied between the TGC module 2 and the TREC module 3, and the TGC module 2 and TREC module 3 are bonded and fixed by the thermally conductive adhesive.

[0022] Please see Figure 1 and Figure 2 TREC module 3 includes a TREC battery pack and a first heat exchange component. The first heat exchange component covers the outside of the TREC battery pack. The TREC battery pack includes a positive electrode, a negative electrode, a positive electrode liquid, a negative electrode liquid, and an ion exchange membrane. The ion exchange membrane is disposed between the positive electrode and the negative electrode. The positive electrode liquid fills the space between the positive electrode and the ion exchange membrane, and the negative electrode liquid fills the space between the negative electrode and the ion exchange membrane. TGC module 2 includes a TGC and a second heat exchange component. The second heat exchange component covers the outside of the TGC. The TGC includes a cold electrode and a hot electrode. Thermocouples are installed on the surfaces of the positive electrode, the negative electrode, the cold electrode, and the hot electrode. The temperature of the electrodes can be monitored in real time through the thermocouples.

[0023] Both the first and second heat exchange components consist of a heat storage medium and multiple heat exchange plates. The heat storage medium is filled into the interior of the heat exchange plates, and the multiple heat exchange plates are arranged linearly. The TREC module 3 absorbs heat through the first heat exchange component and maintains the TREC module 3 at a high temperature. The TGC module 2 absorbs heat through the second heat exchange component and maintains the hot and cold electrodes in the TGC module 2 at a temperature difference. The TGC module 2 outputs continuous electrical energy based on the diffusion effect and thermoelectric effect.

[0024] Please see Figure 3 and Figure 4 Each of the two TGC modules 2 has an electrolyte main channel 4 between one end and the heat treatment component. The heat treatment component includes a waste heat collection device 1 and a cooling device 5. The two TGC modules 2 are connected to the waste heat collection device 1 and the cooling device 5 through the electrolyte main channel 4. An electrolyte branch channel 6 is provided between the ends of each two adjacent TGC modules 2. Each two adjacent TGC modules 2 are connected through the electrolyte branch channel 6. The electrolyte main channel 4 and the multiple electrolyte branch channels 6 are filled with electrolyte. The electrolyte flows through the multiple TGC modules 2, the electrolyte branch channels 6 and the electrolyte main channel 4. The beginning and end of the electrolyte flow are connected to the waste heat collection device 1 and the cooling device 5. By the electrolyte flowing inside the electrolyte main channel 4 and the multiple electrolyte branch channels 6, heat and cold can be transferred to the TGC modules 2 respectively.

[0025] The waste heat collection device 1 includes a heat transfer device and a heat absorption medium, which is a common heat transfer fluid such as water or heat transfer oil. The waste heat collection device 1 absorbs the heat of low-grade waste heat through the heat absorption medium and transfers it to the electrolyte. The low-grade waste heat includes industrial waste heat, flue gas waste heat, data center waste heat and solar heat. The cooling device 5 includes a heat transfer device and a cooling medium, which is water or air. Both the heat absorption medium and the cooling medium are filled into the interior of the heat transfer device. Both the heat absorption medium and the cooling medium are separated from the electrolyte through the heat transfer device. The waste heat collection device 1 can input heat to multiple TGC modules 2, and the cooling device 5 can input cold energy to multiple TGC modules 2.

[0026] In use, the circulating power generation system is divided into four stages. The first stage is the heating stage, which includes the waste heat collection device 1 absorbing low-grade waste heat and then transferring the heat through the electrolyte in the main electrolyte channel 4 and multiple electrolyte branch channels 6 to each TGC module 2 in sequence. Then, the TGC module 2 conducts the heat to the interior of the TREC modules 3 on both sides, causing the overall temperature to rise. The second stage is the charging stage. Since the positive electrode material of the TREC module 3 has a negative temperature coefficient and the negative electrode material has a positive temperature coefficient, the open circuit voltage of the TREC module 3 decreases. Under the effect of the temperature difference inside the TGC module 2, it reaches the near-saturation voltage and enters the continuous working mode. At the same time, each TREC module 3 is charged at a low voltage at a high temperature and absorbs heat due to entropy increase during the electrochemical reaction.

[0027] The third stage is the cooling stage. The waste heat collection device 1 is disconnected, and the cold energy is conducted by the cooling device 5 through the electrolyte main channel 4 and multiple electrolyte branch channels 6 to the inside of each TGC module 2 in sequence, and then to the inside of each TREC module 3. Under the cooling effect, the temperature drops and returns to the initial state. The open circuit voltage of TREC module 3 increases. At this time, the temperature difference between the two sides of the electrolyte main channel 4 and the electrolyte branch channels 6 is reused through TGC module 2. The fourth stage is the discharge stage. Each TGC module 2 is connected to the external circuit, and the battery discharges to 0V in a short time. The current rises linearly to the maximum value. During the discharge process, electrons flow from the hot side to the cold side through the external circuit, which reduces the internal electrostatic field of TGC module 2 and thus reduces the battery voltage. Each TREC module 3 completes the discharge at a high voltage under low temperature. The battery entropy of TREC module 3 decreases and releases heat to the environment until it returns to the original discharge state, realizing a single cycle of power generation operation.

[0028] The charge-discharge energy difference of TREC module 3 is extracted as net power W, and then the cycle of power generation is repeated multiple times. The total power generation of each TGC module 2 based on the space temperature difference under heating is recorded as W1, the total power generation of each TGC module 2 based on the space temperature difference under cooling is recorded as W2, the total power generation of each TREC module 3 due to the time temperature difference under heating and cooling is recorded as W3, and the total input heat of the cycle power generation system is recorded as Q.

[0029] The average charge-discharge voltage difference obtained from each TREC module 3 is as follows:

[0030]

[0031] The total power generation of each TREC module 3 in one hour is:

[0032]

[0033] The maximum power generation efficiency of each TGC module 2 is:

[0034]

[0035] in The thermoelectric figure of merit refers to the power generation W1 and W2 corresponding to the thermoelectric coefficient of the material under different operating conditions, respectively:

[0036]

[0037] Therefore, the improvement in power generation efficiency of TREC module 3 is:

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A blade thermoelectric battery cycle power generation system under dual thermoelectric power generation mode, comprising a heat treatment component, a TGC module (2), a TREC module (3), an electrolyte main channel (4), and an electrolyte branch channel (6), characterized in that: Multiple TREC modules (3) are installed on one side of the heat treatment assembly. A TGC module (2) is inserted between each two adjacent TREC modules (3). The multiple TGC modules (2) and TREC modules (3) are arranged alternately. An electrolyte main channel (4) is provided between one end of each TGC module (2) and the heat treatment assembly. The heat treatment assembly includes a waste heat collection device (1) and a cooling device (5). Both sides of each TGC module (2) are in contact with the two adjacent TREC modules (3). Two of the TGC modules (2) are connected to the waste heat collection device (1) and the cooling device (5) through the main electrolyte channel (4). An electrolyte branch channel (6) is provided between the ends of each two adjacent TGC modules (2). Each two adjacent TGC modules (2) are connected through the electrolyte branch channel (6). The TREC module (3) includes a TREC battery pack and a first heat exchange component. The first heat exchange component covers the outside of the TREC battery pack. The TREC battery pack includes a positive electrode, a negative electrode, a positive electrode liquid, a negative electrode liquid, and an ion exchange membrane. The ion exchange membrane is disposed between the positive electrode and the negative electrode. The positive electrode liquid fills the space between the positive electrode and the ion exchange membrane. The negative electrode liquid fills the space between the negative electrode and the ion exchange membrane. The TGC module (2) includes a TGC and a second heat exchange component. The second heat exchange component covers the outside of the TGC. The TGC includes a cold electrode and a hot electrode. Thermocouples are installed on the surfaces of the positive electrode, the negative electrode, the cold electrode, and the hot electrode.

2. The blade thermoelectric battery cyclic power generation system according to claim 1, characterized in that: Thermally conductive adhesive is applied between the TGC module (2) and the TREC module (3), and the TGC module (2) and the TREC module (3) are bonded and fixed together by the thermally conductive adhesive.

3. The blade thermoelectric battery cyclic power generation system under dual thermoelectric power generation mode according to claim 2, characterized in that: Both the first heat exchange component and the second heat exchange component consist of a heat storage medium and a plurality of heat exchange plates. The heat storage medium is filled into the interior of the heat exchange plates, and the plurality of heat exchange plates are arranged linearly.

4. The blade thermoelectric battery cyclic power generation system under dual thermoelectric power generation mode according to claim 3, characterized in that: The waste heat collection device (1) includes a heat transfer device and a heat absorption medium, wherein the heat absorption medium is water or heat transfer oil. The cooling device (5) includes a heat transfer device and a cooling medium, wherein the cooling medium is water or air. Both the heat absorption medium and the cooling medium are filled into the interior of the heat transfer device. The interior of the main electrolyte channel (4) and multiple electrolyte branch channels (6) are filled with electrolyte. Both the heat absorption medium and the cooling medium are separated from the electrolyte by the heat transfer device.

5. The blade thermoelectric battery cyclic power generation system according to claim 4, characterized in that: The electrolyte flows through multiple TGC modules (2), electrolyte branch channels (6), and electrolyte main channel (4). The beginning and end of the electrolyte flow are connected to the waste heat collection device (1) and the cooling device (5). The waste heat collection device (1) absorbs the heat of low-grade waste heat through the heat-absorbing medium and transports it to the electrolyte. The low-grade waste heat includes industrial waste heat, flue gas waste heat, data center waste heat, and solar heat.

6. The blade thermoelectric battery cyclic power generation system according to claim 5, characterized in that: The TREC module (3) absorbs heat through the first heat exchange component and maintains the TREC module (3) at a high temperature. The TGC module (2) absorbs heat through the second heat exchange component and maintains the hot and cold electrodes in the TGC module (2) at a temperature difference. The TGC module (2) outputs continuous electrical energy based on diffusion effect and thermoelectric effect.

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