Automatic pressurization device for a high-temperature oxide fuel cell stack

Abstract

The application belongs to the technical field of fuel cells, and discloses an automatic pressurizing device for a high-temperature oxide fuel cell stack, which comprises a base plate, a connecting assembly connected to the base plate, two pressurizing pull rods connected to the end of the connecting assembly away from the base plate, a sleeve connected to the connecting assembly, a pressurizing assembly connected to one end of the sleeve, and a motor assembly connected to the end of the pressurizing assembly away from the base plate. The motor assembly, the pressurizing assembly and the sleeve work cooperatively, and the motor can dynamically adjust the steering and running state according to the difference between the actual pressure and the target threshold value. When the pressure is insufficient, the motor drives the sleeve to push the connecting cylinder, the pressurizing rod extends and increases the contact area and the pressure compensation through the elastic sheet. When the pressure is too high, the motor reverses to realize pressure retraction. When the pressure meets the standard, the motor stands by to maintain stability. Meanwhile, the pressurizing assembly cooperates with the connecting assembly, the elastic sheet adheres to the inner wall of the connecting cylinder to reduce the displacement of the pressurizing rod.

Description

Technical Field

[0001] This invention belongs to the field of fuel cell technology, specifically an automatic pressurization device for a high-temperature oxide fuel cell stack. Background Technology

[0002] In the field of fuel cell technology, the stable operation of high-temperature oxide fuel cell stacks has strict requirements on pressurization accuracy, equipment heat dissipation efficiency, and operational status monitoring. However, existing pressurization devices have significant shortcomings. Traditional pressurization devices are difficult to dynamically adjust the pressurization accuracy according to actual pressure requirements, and are easily affected by vibration during pressurization, resulting in poor pressurization stability and an inability to provide a continuous and stable pressure environment for the fuel cell stack. Furthermore, the drive motor of the pressurization device generates a large amount of heat during long-term operation. Existing heat dissipation structures have fixed heat dissipation efficiency and are difficult to adaptively adjust according to changes in motor temperature. High temperatures can easily affect the stability of motor power output, thereby affecting the pressurization effect.

[0003] Patent application number CN202010277961.2 discloses a pressurization device for a solid oxide fuel cell stack, relating to the field of fuel cell technology. The device includes an upper pressure frame, a lower pressure frame, an upper pressure plate, a lower pressure plate, and four side pressure plates. The upper and lower pressure frames are respectively positioned on opposite sides of a rectangular fuel cell stack. The lower pressure plate is parallel to and fixedly mounted on the lower pressure frame. The side pressure plates are vertically positioned. The device also includes four side pressurization devices, each capable of applying pressure towards the fuel cell stack to one of the side pressure plates. The four side pressure plates are respectively used to press against the four sides of the rectangular fuel cell stack. Furthermore, the device includes a vertical pressurization device and a guiding device. The guiding device provides vertical guidance for the upper and lower pressure frames. The pressurization device provided by the above solution has a good pressurization effect on the fuel cell stack and increases the stability of the structure.

[0004] Meanwhile, traditional devices lack real-time monitoring and emergency protection mechanisms for the operating status of pressurization components. When faults such as loosening or loss of pressure occur in the pressurization components, they cannot be detected in time and protective measures cannot be taken, which may affect or even damage the operation of the battery stack.

[0005] Therefore, in order to solve the above-mentioned technical problems, the present invention proposes an automatic pressurization device for high-temperature oxide fuel cell stacks. Summary of the Invention

[0006] The purpose of this invention is to address the above-mentioned problems. This invention provides an automatic pressurization device for high-temperature oxide fuel cell stacks, which has the advantages of adjusting pressurization accuracy, real-time monitoring of operating status, and adaptive adjustment of heat dissipation efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic pressurization device for a high-temperature oxide fuel cell stack, comprising a base plate, a connecting assembly connected to the base plate, two pressurization rods connected to the end of the connecting assembly away from the base plate, and a sleeve connected to the connecting assembly, a pressurization assembly connected to one end of the sleeve, and a motor assembly connected to the end of the pressurization assembly away from the base plate.

[0008] The motor assembly includes a motor connected to the sleeve. A heat dissipation layer is provided on the outer circumference of the motor. A transmission plate for transmitting vibration is connected to one end of the heat dissipation layer near the base plate, and heat dissipation fins are connected to the other end of the heat dissipation layer away from the transmission plate.

[0009] The heat dissipation layer is made of an elastic thermally conductive material.

[0010] Preferably, an anti-rotation partition and a top plate are respectively connected between the connecting assembly and the motor assembly, the pressure rod and the sleeve both penetrate the anti-rotation partition and the top plate, and there is a gap between the anti-rotation partition and the top plate.

[0011] Preferably, the connecting assembly includes a vibrating plate, the pressurizing assembly is snapped into the vibrating plate, a buffer plate is provided on one side of the vibrating plate, a buffer member is connected between the buffer plate and the vibrating plate, a bearing plate is provided on the side of the buffer plate away from the vibrating plate, the bearing plate is connected to the base plate, and the pressurizing rod is slidably connected to the bearing plate.

[0012] Preferably, the end of the bearing plate near the vibrating plate is connected to a connecting post for elastic buffering, and the end of the connecting post away from the bearing plate passes through the buffer plate and is connected to the vibrating plate.

[0013] Preferably, the buffer includes a spring, one end of which is connected to the buffer plate, and the end of the spring away from the buffer plate is connected to a magnetic plate, the magnetic plate being able to adhere to the vibrating plate.

[0014] Preferably, the pressurizing component includes a connecting cylinder, one end of which is connected to the sleeve, and the end of the connecting cylinder away from the sleeve passes through the bearing plate and the buffer plate in sequence and is connected to the vibrating plate. A pressurizing rod is provided at the end of the connecting cylinder away from the sleeve, and a plurality of elastic plates are connected to the outer circumference of the pressurizing rod.

[0015] Preferably, the diameter of the pressure rod is smaller than the diameter of the connecting cylinder.

[0016] Preferably, the vibrating plate has a through hole, the connecting cylinder is connected to one end of the through hole, and two protective components for limiting the pressure rod are connected to the wall of the through hole.

[0017] Preferably, both of the protective components include a telescopic rod, with a retaining plate connected to one end of the telescopic rod near the connecting cylinder, a detection rod connected to one end of the retaining plate away from the telescopic rod, and an abutment piece for detecting the movement state of the pressure rod connected to one end of the detection rod away from the retaining plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Through the coordinated operation of the motor assembly, pressurizing assembly, and sleeve, the motor can dynamically adjust its direction and operating status according to the difference between the actual pressure and the target threshold. When the pressure is insufficient, the motor rotates forward to drive the sleeve and push the connecting cylinder forward. The pressurizing rod extends and increases the contact area and pressure compensation through the elastic plate. When the pressure is too high, the motor reverses to achieve pressure retraction. When the pressure reaches the target, the motor stands still to maintain stability. At the same time, the pressurizing assembly and the connecting assembly cooperate, the elastic plate fits against the inner wall of the connecting cylinder to reduce the displacement of the pressurizing rod, the buffer absorbs vibration through spring deformation, and the connecting column ensures the stable sliding of the buffer plate, effectively offsetting the impact of vibration on pressurization and achieving precise control and continuous stability of pressurization accuracy.

[0020] 2. The heat dissipation layer of the motor assembly is made of elastic thermally conductive material and has diamond-shaped through holes. When the motor is working, its own vibration and the vibration transmitted by the connecting components will cause the heat dissipation layer to expand and contract, compressing and expanding the through holes to accelerate air circulation. At the same time, the pressure rod will generate axial displacement with the vibration of the connecting components, causing the transmission plate to pull the heat dissipation layer to further deform. This achieves adaptive adjustment of heat dissipation efficiency according to the motor temperature and vibration state, ensuring that the motor is always at a suitable operating temperature and avoiding high temperature affecting power output.

[0021] 3. Through the cooperation between the protection component, pressurization component, and connection component, the contact plate of the protection component always adheres to the pressurization rod, and the vibration sensor built into the detection rod collects vibration data in real time. When the pressurization rod is slightly loose, the contact plate vibrates to trigger the motor for small-scale pressure compensation; when severe pressure loss occurs, the elastic plate extends rapidly and the contact plate vibrates violently, and the system immediately activates emergency protection. The telescopic rod drives the clamping plate to clamp the pressurization rod to suppress pressure loss. The vibration transmission of the connection component and the real-time detection of the protection component form a closed loop, realizing comprehensive monitoring of the operating status of the pressurization device, timely warning of faults, and taking protective measures to ensure that the fuel cell stack is not affected. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the overall device of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure of the motor assembly of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the motor assembly of the present invention;

[0025] Figure 4 This is a cross-sectional structural diagram of the motor assembly of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the connecting component of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the vibrating plate of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the pressurization component of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the pressurization component of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the protective component of the present invention;

[0031] Figure Descriptions: 1. Base plate; 2. Connecting assembly; 201. Vibration plate; 202. Buffer plate; 203. Connecting column; 204. Bearing plate; 205. Protection assembly; 2051. Telescopic rod; 2052. Clip plate; 2053. Detection rod; 2054. Contact plate; 3. Anti-rotation partition; 4. Top plate; 5. Motor assembly; 501. Motor; 502. Heat dissipation layer; 503. Heat dissipation fins; 504. Transmission plate; 6. Pressure rod; 7. Sleeve; 8. Pressure assembly; 801. Connecting cylinder; 802. Pressure rod; 803. Elastic sheet; 9. Buffer component; 901. Spring; 902. Magnetic plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 - Figure 9As shown, this invention discloses an automatic pressurization device for a high-temperature oxide fuel cell stack, including a base plate 1 for stable support of the device, ensuring that the pressurization device can generate sufficient pressure on the fuel cell stack. A connecting assembly 2 for connecting components is connected to the base plate 1. Two pressurization rods 6 are connected to the end of the connecting assembly 2 away from the base plate 1 for transmitting vibration force, and the two pressurization rods 6 are used to maintain the stability of the components connected to the connecting assembly 2. A sleeve 7 for adjusting the length and pressurization pressure of the pressurization assembly 8 is connected to the connecting assembly 2. One end of the sleeve 7 is connected to a part that abuts against the fuel cell stack. The pressurizing component 8 has a motor component 5 connected to the end of the pressurizing component 8 away from the base plate 1, which is used to adjust the connection length between the sleeve 7 and the pressurizing component 8. In use, the base plate 1 is first fixed on the battery stack that needs to be pressurized, and then the connecting component 2 is fixed on the base plate 1. The pressurizing component 8 and the sleeve 7 are then connected to the connecting component 2, and the motor component 5 is connected to the sleeve 7 to ensure that the motor component 5 can drive the pressurizing component 8 to work through the sleeve 7. At the same time, a pressurizing rod 6 is connected to the connecting component 2 to maintain the height of the motor component 5, and the pressurizing rod 6 is used to ensure that the sleeve 7 can stably drive the pressurizing component 8 to work.

[0034] To ensure the normal operation of the motor assembly 5 and prevent the motor assembly 5 from overheating during operation, the motor assembly 5 includes a motor 501 for providing driving power. The motor 501 is connected to the sleeve 7 and can drive the sleeve 7 to rotate. The outer circumference of the motor 501 is provided with a heat dissipation layer 502 for transferring the heat of the motor 501, and the heat dissipation layer 502 has multiple diamond-shaped through holes for gas circulation. The end of the heat dissipation layer 502 near the base plate 1 is connected to a transmission plate 504 for transmitting vibration. The transmission plate 504 can slide on the pressure rod 6, and the sliding distance will not collide with the motor 501. The end of the heat dissipation layer 502 away from the transmission plate 504 is connected to a heat dissipation fin 503 for assisting the heat dissipation layer 502 in dissipating heat.

[0035] Furthermore, when the actual pressure value is lower than the target upper limit threshold, the motor 501 is controlled to rotate forward, driving the sleeve 7 to advance the connecting cylinder 801, causing the pressure rod 802 to move towards the battery stack, increasing the pressure; when the actual pressure value is higher than the target upper limit threshold, the motor 501 is controlled to rotate in reverse, driving the connecting cylinder 801 to retract, reducing the pressure; when the actual pressure value is within the target threshold range, the motor 501 remains in standby mode, maintaining stable pressure.

[0036] It should also be noted that the heat dissipation layer 502 is made of elastic thermally conductive material, which ensures that the heat dissipation layer 502 can eliminate the heat generated by the motor 501 and ensure the normal operation of the motor 501.

[0037] During use, the heat dissipation layer 502 is used to eliminate the heat generated by the motor 501. During the operation of the motor 501, the vibration generated by the motor 501 drives the heat dissipation layer 502 to move, thereby compressing and expanding the diamond-shaped through hole, thereby improving the heat dissipation efficiency of the motor 501.

[0038] Furthermore, during the contact between the pressurizing component 8 and the battery stack, the pressurizing component 8 transmits the vibration force generated by the battery stack to the connecting component 2, and the connecting component 2 transmits the vibration force generated by the pressurizing component 8 to the pressurizing rod 6. The pressurizing rod 6 then drives the transmission plate 504 and the heat dissipation layer 502 to move, thereby increasing the airflow rate near the motor 501 and maintaining the stable operating temperature of the motor 501.

[0039] Furthermore, the connecting assembly 2 and the motor assembly 5 are respectively connected by an anti-rotation partition 3 for stabilizing the operation of the motor assembly 5 and a top plate 4 for improving the connection strength of the device. The pressure rod 6 and the sleeve 7 both pass through the anti-rotation partition 3 and the top plate 4. There is a gap between the anti-rotation partition 3 and the top plate 4, and the sleeve 7 is rotatably connected to the anti-rotation partition 3 and the top plate 4 respectively.

[0040] Furthermore, to ensure the transmission of the vibrational force generated by the pressurizing component 8, the connecting component 2 includes a vibrating plate 201 for transmitting vibration. The pressurizing component 8 is engaged with the vibrating plate 201, meaning that when the pressurizing component 8 vibrates, it can drive the vibrating plate 201 to transmit the vibrational force of the pressurizing component 8. A buffer plate 202 for stable potential energy transmission is provided on one side of the vibrating plate 201. A buffer element 9 for canceling potential energy is connected between the buffer plate 202 and the vibrating plate 201. A bearing plate 204 for connecting the connecting component 2 is provided on the side of the buffer plate 202 away from the vibrating plate 201. The carrier plate 204 is connected to the base plate 1, and the pressure rod 6 is slidably connected to the carrier plate 204. In use, the carrier plate 204 is fixed to the base plate 1. When the pressure assembly 8 vibrates, the pressure assembly 8 transmits the vibration force to the vibrating plate 201, and the buffer plate 202 first cancels the vibration force of the vibrating plate 201. At the same time, when the amplitude of the vibrating plate 201 is large, it can cause the vibration force of the buffer 9 to be transmitted to the buffer plate 202, and the pressure rod 6 of the buffer plate 202 slides to eliminate the vibration force of the pressure assembly 8, ensuring the contact stability between the pressure assembly 8 and the battery stack.

[0041] Furthermore, in order to ensure the stable connection of the buffer plate 202, avoid excessive compression of the buffer component 9 which would affect the use of the vibrating plate 201, and improve the potential energy transfer of the buffer plate 202, a connecting post 203 for elastic buffering is connected to one end of the bearing plate 204 near the vibrating plate 201. The end of the connecting post 203 away from the bearing plate 204 passes through the buffer plate 202 and is connected to the vibrating plate 201. At the same time, the buffer plate 202 is slidably connected to the connecting post 203, thereby ensuring that the buffer plate 202 maintains a normal working state.

[0042] Furthermore, in order to ensure that the buffer 9 can cancel the vibration force, the buffer 9 includes a spring 901 for potential energy conversion. One end of the spring 901 is connected to the buffer plate 202, and the end of the spring 901 away from the buffer plate 202 is connected to a magnetic plate 902 for connecting the spring 901. The magnetic plate 902 can be attracted to the vibrating plate 201, thereby ensuring that the spring 901 can be stably connected to the magnetic plate 902, so that the buffer 9 can cancel the vibration of the vibrating plate 201.

[0043] Furthermore, the pressurization assembly 8 includes a connecting cylinder 801 for pressure protection. One end of the connecting cylinder 801 is connected to the sleeve 7, thereby rotating the connecting cylinder 801 via the sleeve 7 to adjust the contact pressure between the pressurization rod 802 and the battery stack. This also reduces the direct force on the sleeve 7 and improves its service life. The end of the connecting cylinder 801 away from the sleeve 7 passes through the bearing plate 204 and the buffer plate 202 in sequence and is connected to the vibration plate 201. The end of the connecting cylinder 801 away from the sleeve 7 is provided with a pressurization rod 802 for contacting the battery stack. By changing the connection angle between the connecting cylinder 801 and the pressurization rod 802, pressurization is achieved. The pressure between the rod 802 and the battery stack is increased. At the same time, multiple elastic plates 803 are connected to the outer circumference of the pressure rod 802 to detect the contact position of the pressure rod 802. The two ends of the elastic plates 803 distributed along the length direction are slidably connected to the circumference of the pressure rod 802. When the elastic plates 803 are removed from the restricted area of ​​the connecting cylinder 801, the elastic plates 803 bend and protrude on the pressure rod 802. At the same time, the remaining elastic plates 803 abut against the inner wall of the connecting cylinder 801, which increases the contact pressure between the pressure rod 802 and the connecting cylinder 801 and reduces the probability of relative movement between the pressure rod 802 and the connecting cylinder 801 when it abuts against the battery stack.

[0044] Meanwhile, when the pressure rod 802 fails to resist, a relative displacement occurs between the pressure rod 802 and the connecting cylinder 801, which causes some of the elastic sheets 803 to extend rapidly. At this time, the control and protection component 205 contacts and clamps the outer periphery of the pressure rod 802 to prevent the pressure rod 802 from losing pressure rapidly and affecting the normal use of the battery stack.

[0045] Furthermore, the diameter of the pressure rod 802 is smaller than the diameter of the connecting cylinder 801, thereby ensuring that the connecting cylinder 801 is connected to the vibrating plate 201 without contacting the outer circumference of the pressure rod 802, while ensuring that a portion of the pressure rod 802 can be housed within the connecting cylinder 801.

[0046] Furthermore, a through hole is provided on the vibrating plate 201, and the connecting cylinder 801 is connected to one end of the through hole to maintain the stability of the connecting cylinder 801. At the same time, the pressure rod 802 does not abut against the wall of the through hole, and two protective components 205 for limiting the pressure rod 802 are connected to the wall of the through hole. The two protective components 205 can constrain and limit the position of the pressure rod 802 in the vertical direction.

[0047] Furthermore, both protective components 205 include a telescopic rod 2051 for controlling the length of the retaining plate 2052. The end of the telescopic rod 2051 near the connecting cylinder 801 is connected to the retaining plate 2052 for constraining the outer circumference of the pressure rod 802. The end of the retaining plate 2052 away from the telescopic rod 2051 is connected to a detection rod 2053 for detecting displacement fluctuations of the pressure rod 802. The detection rod 2053 contains a vibration sensor for collecting the vibration state of the pressure rod 802 and transmitting it to a human-machine interface terminal. One end of the card receiving plate 2052 is connected to a contact piece 2054 for detecting the movement state of the pressure rod 802. The contact piece 2054 is always in contact with the surface of the pressure rod 802. At the same time, the card receiving plate 2052 has a groove for receiving the contact piece 2054. When the contact force of the pressure rod 802 decreases, that is, when a relative displacement occurs between the pressure rod 802 and the connecting cylinder 801, the pressure rod 802 will drive the contact piece 2054 to move, thereby causing the detection rod 2053 to vibrate, thus determining that a relative displacement has occurred between the pressure rod 802 and the connecting cylinder 801.

[0048] When the elastic sheet 803 does not show any obvious abnormalities, and the contact sheet 2054 and the detection rod 2053 do not vibrate, it means that the connection between the pressure rod 802 and the connecting cylinder 801 is stable, and the pressure value of the pressure rod 802 on the battery stack is stable.

[0049] When the elastic sheet 803 does not show any obvious abnormalities, but when the contact sheet 2054 and the detection rod 2053 vibrate abnormally, the displacement state at the connection between the pressure rod 802 and the connecting cylinder 801 is determined by judging the vibration frequency of the detection rod 2053. When the detection rod 2053 continuously detects the displacement of the pressure rod 802, the detection data of the detection rod 2053 is sent to the human-machine interface terminal to remind the staff to pay attention to the pressurization status of the battery stack.

[0050] When the pressure rod 802 is in use, if the elastic plate 803 rapidly extends and the contact plate 2054 exhibits significant and continuous vibration, it means that the pressure rod 802 and the connecting cylinder 801 are rapidly losing pressure. At this time, the telescopic rod 2051 drives the locking plate 2052 to contact the pressure rod 802, restricting the movement of the pressure rod 802. During the contact between the locking plate 2052 and the pressure rod 802, the length of the detection rod 2053 retracts, and the contact plate 2054 overlaps with the locking plate 2052, increasing the friction between the locking plate 2052 and the pressure rod 802, suppressing the rate of pressure loss of the pressure rod 802, and giving the staff sufficient time for maintenance.

[0051] Specifically, when the vibration frequency of the pressure rod 802 is detected to be within the normal range and there is no obvious displacement fluctuation, the pressure state is determined to be stable, and a normal operation signal is output.

[0052] When the vibration frequency is detected to be outside the normal range or intermittent displacement fluctuations occur, it is determined that there is a slight looseness at the connection between the pressure rod 802 and the connecting cylinder 801. The system will immediately display a pop-up message through the human-machine interface and control the motor 501 to perform small-scale pressure compensation to maintain pressure stability.

[0053] When the elastic sheet 803 is detected to be rapidly extending and the contact sheet 2054 is detected to be vibrating violently, it is determined that the pressurization system is at risk of losing pressure. The emergency protection program is immediately activated. On the one hand, the telescopic rod 2051 is controlled to extend rapidly, which drives the clamping plate 2052 to clamp the pressurization rod 802 and suppress the rate of pressure loss. On the other hand, the motor 501 is controlled to stop urgently and a warning signal is issued. At the same time, the fault data is stored in the local memory for the convenience of the staff to troubleshoot and repair later.

[0054] During use, basic assembly and positioning must first be completed, fixing the base plate 1 to the corresponding mounting surface of the target fuel cell stack to ensure the overall stability of the device and provide a solid foundation for subsequent pressurization operations. The connecting component 2 is rigidly connected to the base plate 1 through the bearing plate 204. The connecting column 203 on the bearing plate 204 passes through the buffer plate 202 and is fixed to the vibration plate 201. At the same time, the buffer plate 202 and the vibration plate 201 are elastically connected through the buffer component 9. One end of the spring 901 in the buffer component 9 is fixed to the buffer plate 202, and the other end is attracted to the vibration plate 201 through the magnetic plate 902, thus constructing an elastic buffering mechanism and laying the structural foundation for subsequent vibration cancellation and pressure stabilization.

[0055] One end of the connecting cylinder 801 of the pressurizing assembly 8 is threaded to the sleeve 7, and the other end passes through the bearing plate 204 and the buffer plate 202 in sequence before being engaged with the vibration plate 201. The pressurizing rod 802 is nested inside the connecting cylinder 801. The elastic sheet 803 on its outer circumference is initially partially attached to the surface of the pressurizing rod 802 and abuts against the inner wall of the connecting cylinder 801, ensuring the initial connection stability between the pressurizing rod 802 and the connecting cylinder 801. The motor assembly 5 is limited and installed by the top plate 4 and the anti-rotation partition 3. The output end of the motor 501 is fixedly connected to the sleeve 7. The pressurizing tie rod 6 passes through the anti-rotation partition 3 and the top plate 4 and is slidably connected to the bearing plate 204. The top end of the pressurizing tie rod 6 is fixed to the transmission plate 504. The transmission plate 504 is connected to the heat dissipation layer 502 around the motor 501, forming a path for power transmission and vibration transmission.

[0056] When the actual pressure value is lower than the target lower limit threshold, the control motor 501 rotates forward, driving the connecting cylinder 801 to continue advancing, the pressure rod 802 extends further, and the elastic plate 803 gradually breaks away from the constraint of the connecting cylinder 801 and bends and protrudes as the pressure rod 802 moves. This increases the contact area between the pressure rod 802 and the battery stack, and also compensates for pressure fluctuations through the elastic deformation of the elastic plate 803, thereby improving the uniformity of pressurization.

[0057] When the actual pressure value is higher than the target upper limit threshold, the control motor 501 reverses, the connecting cylinder 801 retracts, the pressure rod 802 retracts into the connecting cylinder 801, and the elastic sheet 803 re-attaches to the surface of the pressure rod 802 and abuts against the inner wall of the connecting cylinder 801, thereby reducing the pressure.

[0058] When the actual pressure value is within the target threshold range, the motor 501 remains in standby mode to maintain stable pressure, thereby achieving dynamic control of the pressure accuracy.

[0059] After the pressure rod 802 comes into contact with the battery stack, the vibration generated during the operation of the battery stack and the vibration of the pressure assembly 8 during operation will be transmitted to the vibration plate 201 through the connecting cylinder 801. The vibration plate 201 transmits the vibration energy to the buffer 9. The spring 901 absorbs part of the vibration potential energy through its expansion and contraction deformation. The magnetic plate 902 ensures the stable connection between the spring 901 and the vibration plate 201, preventing the spring 901 from falling off due to vibration. The buffer plate 202 slides on the connecting column 203 to further offset the vibration energy and prevent the vibration from being transmitted to the base plate 1 and affecting the overall stability of the device.

[0060] At the same time, the vibration of the vibrating plate 201 is transmitted to the bearing plate 204 through the connecting column 203, which in turn drives the pressure rod 6 to produce a small axial displacement. The displacement of the pressure rod 6 drives the transmission plate 504 to move synchronously, and the transmission plate 504 pulls the heat dissipation layer 502 to undergo elastic deformation.

[0061] Since the heat dissipation layer 502 is made of elastic thermally conductive material and has diamond-shaped through holes, the through holes will be compressed and stretched during the deformation process, which will accelerate the air circulation around the motor 501. At the same time, the heat dissipation layer 502 will conduct the heat generated by the motor 501 to the heat dissipation fins 503. The heat dissipation fins 503 increase the heat dissipation area, and with the increase in air circulation rate, the heat dissipation efficiency can be adaptively adjusted.

[0062] In addition, the vibration generated by the motor 501 during operation will also cause the heat dissipation layer 502 to vibrate, further enhancing air circulation and heat dissipation, ensuring that the motor 501 is always at a suitable operating temperature, and avoiding high temperature affecting the stability of power output.

[0063] Two protective components 205 are symmetrically arranged on the wall of the through hole of the vibrating plate 201. Their contact piece 2054 is always in contact with the surface of the pressure rod 802. The vibration sensor built into the detection rod 2053 collects the vibration data of the contact piece 2054 in real time.

[0064] When the pressure rod 802 is stably connected to the connecting cylinder 801 and the pressure is normal, the contact piece 2054 does not vibrate significantly, and the detection rod 2053 transmits a stable signal. When there is slight loosening at the connection between the pressure rod 802 and the connecting cylinder 801, the pressure rod 802 will produce a small displacement, causing the contact piece 2054 to vibrate. The detection rod 2053 transmits the vibration signal, which is judged as a minor fault. A pop-up window is displayed on the human-machine interface, and the motor 501 is controlled to perform a small pressure compensation to maintain pressure stability. When the pressure rod 802 becomes severely loose or loses pressure, the pressure rod 802 and the connecting cylinder... A violent relative displacement occurs between 801, causing the elastic sheet 803 to extend rapidly. At the same time, the contact sheet 2054 generates continuous and violent vibration. The detection rod 2053 transmits a fault signal and immediately activates the emergency protection program. It controls the telescopic rod 2051 to extend rapidly, driving the clamping plate 2052 to move towards the pressure rod 802 and clamp it. The friction between the clamping plate 2052 and the surface of the pressure rod 802 suppresses the rapid depressurization of the pressure rod 802. At the same time, it controls the motor 501 to stop urgently. The fault data is stored in the local memory to provide a basis for subsequent maintenance and ensure that the fuel cell stack is not affected by depressurization.

[0065] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic pressurization device for a high-temperature oxide fuel cell stack, comprising a base plate (1), characterized in that: A connecting assembly (2) is connected to the base plate (1). Two pressure rods (6) are connected to one end of the connecting assembly (2) away from the base plate (1). A sleeve (7) is connected to the connecting assembly (2). A pressure assembly (8) is connected to one end of the sleeve (7). A motor assembly (5) is connected to one end of the pressure assembly (8) away from the base plate (1). The motor assembly (5) includes a motor (501), which is connected to the sleeve (7). A heat dissipation layer (502) is provided on the outer circumference of the motor (501). A transmission plate (504) for transmitting vibration is connected to one end of the heat dissipation layer (502) near the base plate (1), and a heat dissipation fin (503) is connected to the other end of the heat dissipation layer (502) away from the transmission plate (504). The heat dissipation layer (502) is made of an elastic thermally conductive material; The connecting assembly (2) includes a vibrating plate (201), the pressurizing assembly (8) is snapped into the vibrating plate (201), a buffer plate (202) is provided on one side of the vibrating plate (201), a buffer member (9) is connected between the buffer plate (202) and the vibrating plate (201), a bearing plate (204) is provided on the side of the buffer plate (202) away from the vibrating plate (201), the bearing plate (204) is connected to the base plate (1), and the pressurizing rod (6) is slidably connected to the bearing plate (204); The buffer (9) includes a spring (901), one end of which is connected to the buffer plate (202), and the other end of which is away from the buffer plate (202) is connected to a magnetic plate (902), which can be attracted to the vibrating plate (201). The pressurizing component (8) includes a connecting cylinder (801), one end of which is connected to the sleeve (7). The end of the connecting cylinder (801) away from the sleeve (7) passes through the bearing plate (204) and the buffer plate (202) in sequence and is connected to the vibrating plate (201). The end of the connecting cylinder (801) away from the sleeve (7) is provided with a pressurizing rod (802), and multiple elastic plates (803) are connected on the outer circumference of the pressurizing rod (802).

2. The automatic pressurization device for a high-temperature oxide fuel cell stack according to claim 1, characterized in that: The connecting component (2) and the motor component (5) are respectively connected by an anti-rotation partition (3) and a top plate (4). The pressure rod (6) and the sleeve (7) both pass through the anti-rotation partition (3) and the top plate (4). There is a gap between the anti-rotation partition (3) and the top plate (4).

3. The automatic pressurization device for a high-temperature oxide fuel cell stack according to claim 1, characterized in that: The bearing plate (204) is connected to a connecting post (203) for elastic buffering at one end near the vibrating plate (201), and the connecting post (203) is connected to the vibrating plate (201) through the buffer plate (202) at the other end away from the bearing plate (204).

4. The automatic pressurization device for a high-temperature oxide fuel cell stack according to claim 1, characterized in that: The diameter of the pressure rod (802) is smaller than the diameter of the connecting cylinder (801).

5. The automatic pressurization device for a high-temperature oxide fuel cell stack according to claim 4, characterized in that: The vibrating plate (201) has a through hole, the connecting cylinder (801) is connected to one end of the through hole, and two protective components (205) for limiting the pressure rod (802) are connected to the hole wall of the through hole.

6. The automatic pressurization device for a high-temperature oxide fuel cell stack according to claim 5, characterized in that: Both of the protective components (205) include a telescopic rod (2051), with a retaining plate (2052) connected to one end of the telescopic rod (2051) near the connecting cylinder (801), and a detection rod (2053) connected to one end of the retaining plate (2052) away from the telescopic rod (2051). An abutment piece (2054) for detecting the movement state of the pressure rod (802) is connected to one end of the detection rod (2053) away from the retaining plate (2052).

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