Kilowatt-level metal fuel cell stack

Abstract

The kilowatt-level metal fuel cell stack comprises a cell stack main body, a plurality of groups of first heat conduction plates are fixedly mounted on the outer surfaces of the two sides of the cell stack main body, a circulating water pipe is mounted between heat dissipation frames, and the two ends of the circulating water pipe are connected with the heat dissipation frames respectively. And the liquid outlet and the liquid return port are connected with the liquid storage bin, a circulating pump is arranged at one end of the liquid outlet, a second cooling fin set is installed on the outer surface of one side of the liquid storage bin, and a cooling mechanism is arranged on the outer surface of the second cooling fin set. The cooling liquid is driven by the circulating pump to circularly flow between the cell stack main body and the liquid storage bin, and the system realizes efficient transfer and dissipation of heat. Compared with a traditional natural cooling or air cooling mode, the temperature of the cell stack can be rapidly reduced through water-cooling circulation cooling, and stable operation of the cell stack in a high-power output state is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of metal fuel cell stacks, and in particular to a kilowatt-class metal fuel cell stack. Background Art

[0002] With the continuous advancement of energy technology and the increasing awareness of environmental protection, metal fuel cells, as an efficient and clean energy conversion device, have shown great application potential in a variety of fields such as aerospace, transportation, distributed power generation and portable power supplies. In particular, kilowatt-class metal fuel cell stacks have become a hot topic of research in recent years due to their high power output and energy density.

[0003] However, metal fuel cells generate a lot of heat during operation, especially at high power output, the temperature inside the stack will rise rapidly. Excessive temperature will not only affect the performance stability of the stack and reduce its service life, but also cause safety issues such as thermal runaway or material degradation. Therefore, effective thermal management has become one of the key technologies for the commercial application of kilowatt-class metal fuel cell stacks.

[0004] Traditional thermal management methods mainly include natural cooling, air cooling and heat pipe technology, but these methods often have problems such as insufficient heat dissipation efficiency, high system complexity or high cost when faced with kilowatt-level or even higher power metal fuel cell stacks. Summary of the invention

[0005] (I) Purpose of the invention

[0006] In view of this, the purpose of the present invention is to provide a kilowatt-class metal fuel cell stack to solve the problems raised in the above background.

[0007] (II) Technical solution

[0008] A kilowatt-class metal fuel cell stack comprises a battery stack body, multiple groups of first heat conducting plates are fixedly installed on the outer surfaces of both sides of the battery stack body, and the outer surfaces of the multiple groups of first heat conducting plates are fixedly installed with a first heat dissipation fin group, multiple groups of second heat conducting plates are fixedly installed on the outer surface of one side of the first heat dissipation fin group, and the outer surfaces of the multiple groups of second heat conducting plates are fixedly installed with a heat dissipation frame, a circulating water pipe is installed between the heat dissipation frames, and the two ends of the circulating water pipe are respectively connected with a liquid outlet and a liquid return port, the liquid outlet and the liquid return port are both connected to a liquid storage tank, and a circulating pump is arranged at one end of the liquid outlet, a second heat dissipation fin group is installed on the outer surface of one side of the liquid storage tank, and a cooling mechanism is arranged on the outer surface of the second heat dissipation fin group.

[0009] Preferably, a micro electronic valve is provided at one end of the liquid outlet.

[0010] Preferably, a liquid replenishing port is provided at one end of the liquid storage bin, and a thread is provided on the inner wall of the liquid replenishing port. A piston is movably mounted on the inner wall of the liquid replenishing port, and the outer surface of the piston is wrapped with rubber.

[0011] Preferably, a plurality of fixing rings are fixedly installed at the bottom end of the circulating water pipe, and one end of the plurality of fixing rings is connected to a fixing rod, one end of the fixing rod is connected to a fixing plate, and the fixing plate is fixedly connected to an outer surface of one side of the battery stack body.

[0012] Preferably, a plurality of groups of temperature sensors are provided on the outer surface of the other side of the liquid storage bin.

[0013] Preferably, the cooling mechanism includes a mounting frame, and the mounting frame is fixedly mounted on the outer surface of one end of the liquid storage tank, the outer surface of the mounting frame is provided with two groups of mounting grooves, and the two groups of mounting grooves are fixedly mounted with mounting plates, a motor is fixedly mounted on one side of the mounting plate, and a shaft is connected to one end of the motor, and a plurality of groups of fan blades are fixedly mounted on the outer surface of the shaft.

[0014] Preferably, a first heat sink and a second heat sink are respectively fixedly mounted on both sides of the inner walls of the two groups of mounting grooves.

[0015] It can be seen from the above technical solutions that this application has the following beneficial effects:

[0016] 1. This invention drives the coolant to circulate between the battery stack body and the liquid storage tank through a circulating pump. The system realizes efficient transfer and dissipation of heat. Compared with traditional natural cooling or air cooling, water cooling circulation can reduce the temperature of the battery stack more quickly and ensure its stable operation under high power output. The introduction of micro-electronic valves enables the system to adjust the flow of coolant according to actual needs, thereby realizing precise control of the battery stack temperature. This flexibility ensures that the system can maintain the best thermal management effect under different working conditions and avoids the problems of overheating or insufficient cooling.

[0017] 2. The invention adopts a multi-level heat dissipation structure, including a first heat conducting plate, a first heat dissipation fin group, a second heat conducting plate, a heat dissipation frame and a second heat dissipation fin group. These components work together to form an efficient heat dissipation network, which can quickly transfer the heat generated by the battery stack to the coolant, and exchange heat with the external environment through circulation to achieve effective heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention;

[0020] Figure 3This is a schematic diagram of the first explosion structure of the present invention;

[0021] Figure 4 This is a schematic diagram of a second explosion structure of the present invention;

[0022] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of point A in the middle,

[0023] Figure 6 For the present invention Figure 4 Enlarged schematic diagram of point B in the middle.

[0024] In the figure: 1. battery stack body; 2. first heat conduction plate; 3. first heat dissipation fin group; 4. second heat conduction plate; 5. heat dissipation frame; 6. circulating water pipe; 7. liquid outlet; 8. micro electronic valve; 9. liquid storage tank; 911. mounting frame; 912. first heat dissipation plate; 913. mounting plate; 914. shaft; 915. fan blade; 916. second heat dissipation plate; 917. motor; 811. temperature sensor; 711. circulation pump; 712. liquid return port; 611. liquid replenishment port; 612. piston; 511. fixing ring; 512. fixing rod; 513. fixing plate; 411. second heat dissipation fin group. DETAILED DESCRIPTION

[0025] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0026] See also Figure 1-6 , an embodiment provided by the present invention:

[0027] A kilowatt-class metal fuel cell stack comprises a battery stack body 1, multiple groups of first heat conducting plates 2 are fixedly installed on both sides of the outer surface of the battery stack body 1, and the outer surfaces of the multiple groups of first heat conducting plates 2 are fixedly installed with first heat dissipation fin groups 3, multiple groups of second heat conducting plates 4 are fixedly installed on one side of the outer surface of the first heat dissipation fin group 3, and the outer surfaces of the multiple groups of second heat conducting plates 4 are fixedly installed with heat dissipation frames 5, and circulating water pipes 6 are installed between the heat dissipation frames 5, and the two ends of the circulating water pipes 6 are respectively connected with a liquid outlet 7 and a liquid return port 712, the liquid outlet 7 and the liquid return port 712 are both connected to a liquid storage tank 9, and a circulating pump 711 is provided at one end of the liquid outlet 7, a second heat dissipation fin group 411 is installed on one side of the outer surface of the liquid storage tank 9, and a cooling mechanism is provided on the outer surface of the second heat dissipation fin group 411.

[0028] Furthermore, a micro electronic valve 8 is provided at one end of the liquid outlet 7, and by providing the micro electronic valve 8 at the liquid outlet 7, fine control of the coolant flow rate can be achieved. This helps to dynamically adjust the cooling efficiency according to the actual operating temperature requirements of the battery stack, which not only ensures sufficient heat dissipation capacity, but also avoids unnecessary energy waste.

[0029] Furthermore, a refilling port 611 is provided at one end of the liquid storage tank 9, and a thread is provided on the inner wall of the refilling port 611, a piston 612 is movably mounted on the inner wall of the refilling port 611, and the outer surface of the piston 612 is wrapped with rubber. The refilling port 611 provided on the liquid storage tank 9 and its thread design make it easy to replenish the coolant when it is reduced. At the same time, the design of the piston 612 and its rubber wrapping layer not only ensures the sealing of the refilling, but also reduces the risk of leakage during the refilling process, thereby improving the reliability and usability of the system.

[0030] Furthermore, multiple sets of fixing rings 511 are fixedly installed at the bottom end of the circulating water pipe 6, and one end of the multiple sets of fixing rings 511 is connected to a fixing rod 512, and one end of the fixing rod 512 is connected to a fixing plate 513, and the fixing plate 513 is fixedly connected to the outer surface of one side of the battery stack body 1. The circulating water pipe 6 is firmly installed on the battery stack body 1 through the combined structure of the fixing ring 511, the fixing rod 512 and the fixing plate 513. This design effectively prevents the water pipe from loosening or falling off due to vibration or external force during the circulation of the coolant, ensuring the stability and safety of the system.

[0031] Furthermore, multiple groups of temperature sensors 811 are provided on the outer surface of the other side of the liquid storage tank 9, and the multiple groups of temperature sensors 811 can monitor the temperature change of the coolant in real time. This design enables the system to automatically adjust the working state according to the temperature data, such as increasing or decreasing the flow rate of the coolant or starting the cooling mechanism, thereby realizing intelligent monitoring and adjustment of the battery stack temperature.

[0032] Furthermore, the cooling mechanism includes a mounting frame 911, and the mounting frame 911 is fixedly mounted on the outer surface of one end of the liquid storage tank 9, the outer surface of the mounting frame 911 is provided with two groups of mounting grooves, and the two groups of mounting grooves are fixedly mounted with mounting plates 913, a motor 917 is fixedly mounted on one side of the mounting plate 913, and one end of the motor 917 is connected to a shaft 914, and the outer surface of the shaft 914 is fixedly mounted with multiple groups of fan blades 915, and the design of the cooling mechanism fully considers the heat dissipation efficiency. Through the combination of the mounting frame 911, the mounting plate 913, the motor 917, the shaft 914 and the fan blades 915, and the addition of the second heat sink 916, an efficient heat dissipation system is formed. The motor drives the fan blades to rotate to generate airflow, which accelerates the heat dissipation of the coolant in the liquid storage tank to the external environment, thereby effectively reducing the temperature of the coolant and improving the efficiency of the entire water-cooled circulation cooling system.

[0033] Furthermore, the first heat sink 912 and the second heat sink 916 are fixedly mounted on both sides of the inner wall of the two groups of mounting grooves, respectively. The addition of the first heat sink 912 and the second heat sink 916 on both sides of the inner wall of the mounting groove can significantly increase the heat dissipation area. When the motor 917 drives the fan blade 915 to rotate and generate airflow, these heat sinks can more effectively transfer the heat of the coolant in the liquid storage tank to the external environment, thereby accelerating the heat dissipation and improving the heat dissipation efficiency of the entire water-cooled circulation cooling system.

[0034] Working principle: First, start the circulation pump 711, which uses its powerful power to extract the coolant such as water or specific coolant pre-stored in the liquid storage tank 9 from the liquid outlet 7. In this process, the micro-electronic valve 8 can adjust the flow of the coolant as needed to ensure the stable operation of the system. The extracted coolant then enters the circulating water pipe 6, which is tightly fitted between the first heat conducting plate 2 and the heat dissipation frame 5 on both sides of the battery stack body 1. Since the first heat conducting plate 2 is in close contact with the battery stack body 1, the heat generated by the battery stack can be quickly transferred to the first heat conducting plate 2, and further diffused to the circulating water pipe 6 in the heat dissipation frame 5 through the first heat dissipation fin group 3 and the second heat conducting plate 4. When the coolant flows in the circulating water pipe 6, it absorbs the heat and realizes the heat transfer. The coolant that absorbs the heat continues to flow in the circulating water pipe 6, and finally returns to the liquid storage tank 9 through the return port 712. In the liquid storage tank 9, the coolant not only completes the initial accumulation of heat, but also further exchanges heat with the external environment through the second heat dissipation fin group 411 to reduce its own temperature. At this time, the cooling mechanism includes a motor 917, a shaft 914, and a fan blade 915. The motor 917 is started to drive the fan blade 915 to rotate, generate airflow, and accelerate the air flow on the surface of the second heat dissipation fin group 411, thereby enhancing the heat dissipation effect and further reducing the temperature of the coolant. In order to ensure the stable operation of the system, multiple groups of temperature sensors 811 are set on the outer surface of the other side of the liquid storage tank 9 to monitor the temperature of the coolant in real time. Once the temperature exceeds the preset threshold, the system will automatically adjust the speed of the circulation pump 711 to respond.

[0035] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A kilowatt-class metal fuel cell stack, comprising a stack body (1), characterized in that: Multiple groups of first heat conducting plates (2) are fixedly mounted on the outer surfaces of both sides of the battery stack body (1), and the outer surfaces of the multiple groups of first heat conducting plates (2) are fixedly mounted with first heat dissipation fin groups (3), multiple groups of second heat conducting plates (4) are fixedly mounted on the outer surfaces of one side of the first heat dissipation fin group (3), and the outer surfaces of the multiple groups of second heat conducting plates (4) are fixedly mounted with heat dissipation frames (5), a circulating water pipe (6) is mounted between the heat dissipation frames (5), and the two ends of the circulating water pipe (6) are respectively connected to a liquid outlet (7) and a liquid return port (712), the liquid outlet (7) and the liquid return port (712) are both connected to a liquid storage tank (9), and a circulating pump (711) is arranged at one end of the liquid outlet (7), a second heat dissipation fin group (411) is mounted on the outer surface of one side of the liquid storage tank (9), and a cooling mechanism is arranged on the outer surface of the second heat dissipation fin group (411).

2. A kilowatt-class metal fuel cell stack according to claim 1, characterized in that: A micro electronic valve (8) is provided at one end of the liquid outlet (7).

3. The kilowatt-class metal fuel cell stack according to claim 1, characterized in that: A liquid replenishing port (611) is provided at one end of the liquid storage bin (9), and a thread is provided on the inner wall of the liquid replenishing port (611). A piston (612) is movably mounted on the inner wall of the liquid replenishing port (611), and the outer surface of the piston (612) is wrapped with rubber.

4. The kilowatt-class metal fuel cell stack according to claim 1, characterized in that: A plurality of sets of fixing rings (511) are fixedly mounted on the bottom end of the circulating water pipe (6), and one end of the plurality of fixing rings (511) is connected to a fixing rod (512), one end of the fixing rod (512) is connected to a fixing plate (513), and the fixing plate (513) is fixedly connected to an outer surface of one side of the battery stack body (1).

5. The kilowatt-class metal fuel cell stack according to claim 1, characterized in that: A plurality of groups of temperature sensors (811) are provided on the outer surface of the other side of the liquid storage bin (9).

6. The kilowatt-class metal fuel cell stack according to claim 1, characterized in that: The cooling mechanism comprises a mounting frame (911), and the mounting frame (911) is fixedly mounted on the outer surface of one end of the liquid storage tank (9), the outer surface of the mounting frame (911) is provided with two groups of mounting grooves, and the two groups of mounting grooves are fixedly mounted with mounting plates (913), a motor (917) is fixedly mounted on one side of the mounting plate (913), and one end of the motor (917) is connected to a shaft (914), and a plurality of groups of fan blades (915) are fixedly mounted on the outer surface of the shaft (914).

7. A kilowatt-class metal fuel cell stack according to claim 6, characterized in that: A first heat dissipation plate (912) and a second heat dissipation plate (916) are respectively fixedly mounted on both sides of the inner walls of the two groups of mounting grooves.

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