Parallel fuel cell heat dissipation system

Abstract

The utility model discloses a parallel type fuel cell heat dissipation system, and relates to the technical field of cell heat dissipation. Comprising a mounting base, a first fuel cell stack and a second fuel cell stack are arranged at the two ends of the upper end face of the mounting base respectively, and reasonable distribution of cooling liquid between the two fuel cell stacks can be achieved through adjustment of a first three-way valve and a second three-way valve; after being fully mixed and radiated in the radiator main body, the cooling liquid is respectively supplied to the two sets of fuel cell stacks, so that high-efficiency transfer and radiation of heat are realized, one set of radiator main body and related radiating pipelines are shared, the space occupied by the system is greatly saved, the manufacturing cost of the system is reduced, and the production efficiency is improved. And through adjustment of the third three-way valve, the first three-way valve and the second three-way valve, the system can be flexibly adjusted according to heat dissipation requirements under different working conditions, and the flexibility and adaptability of the system are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery heat dissipation technology, specifically a parallel fuel cell heat dissipation system. Background Technology

[0002] With the continuous development of fuel cell technology, its application in electric vehicles, energy storage systems, and other fields is becoming increasingly widespread. However, fuel cells generate a large amount of heat during operation. If this heat cannot be dissipated in a timely and effective manner, it will seriously affect the performance and lifespan of the fuel cell. As environmental awareness continues to increase worldwide, hydrogen energy is considered one of the most promising new energy forms, with advantages such as high energy density, renewability, and zero pollution. According to the principle of hydrogen fuel cells, a large amount of heat is generated during the reaction process, which needs to be transferred to the atmosphere through a heat dissipation system to maintain the normal operating temperature of the fuel cell.

[0003] Traditional fuel cell cooling systems often employ a single cooling method, such as relying solely on air cooling or water cooling. This method may not meet the cooling requirements of the fuel cell under certain operating conditions, leading to excessively high fuel cell temperatures, performance degradation, and even safety hazards. Furthermore, traditional cooling systems are typically designed for a single fuel cell stack. When multiple fuel cell stacks need to operate in parallel, multiple cooling systems are required, which not only increases the complexity and manufacturing cost of the system but also occupies a significant amount of space. Therefore, this invention provides a parallel fuel cell cooling system. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a parallel fuel cell cooling system. This solves the problem that traditional fuel cell cooling systems often employ a single cooling method, such as relying solely on air cooling or water cooling. Such methods may not meet the cooling requirements of the fuel cell under certain operating conditions, leading to excessively high fuel cell temperatures, performance degradation, and even safety hazards. Furthermore, traditional cooling systems are typically designed for a single fuel cell stack. When multiple fuel cell stacks need to operate in parallel, multiple cooling systems are required, which not only increases the complexity and manufacturing cost of the system but also occupies a significant amount of space.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a parallel fuel cell heat dissipation system, comprising a mounting base, wherein a first fuel cell stack and a second fuel cell stack are respectively disposed at both ends of the upper surface of the mounting base, and the first and second fuel cell stacks are provided with a heat dissipation mounting mechanism, the mounting mechanism comprising:

[0006] The heat dissipation assembly includes a heat sink body fixedly connected to the center of the upper surface of the mounting base, a heat-conducting shell fixedly connected to the upper surface of the first fuel cell stack, a heat dissipation pipe fixed inside the heat-conducting shell, a first three-way valve connected to the output end of the heat sink body, a second conduit connected to one end of the first three-way valve via a drive assembly, a third three-way valve connected to the input end of the heat sink body, and a first conduit connected to one end of the third three-way valve.

[0007] The protective components include a filter assembly for blocking impurities disposed inside the first conduit, and air-cooling components for the battery stack disposed on both sides of the radiator body.

[0008] Preferably, the drive assembly includes a water pump fixedly connected to the output end of a first three-way valve, a second conduit located at the output end of the water pump, and the other end of the second conduit fixedly connected to a heat dissipation pipe.

[0009] Preferably, a second three-way valve is fixedly connected to the output end of the radiator body, and the second three-way valve is symmetrically arranged with the first three-way valve.

[0010] Preferably, the filter assembly includes a filter housing fixedly connected inside the first conduit, an installation housing connected to the filter housing via a snap-fit ​​assembly, and a filter screen fixedly connected inside the installation housing.

[0011] Preferably, the engaging assembly includes a supporting housing fixedly connected to both sides of the filter housing, a spring fixedly connected to the inner wall of the supporting housing, a mounting plate fixedly connected to the end of the spring, a locking rod fixedly connected to the outer wall of the mounting plate, the mounting housing being located inside the filter housing and being slidably connected to the filter housing, the mounting housing having locking holes corresponding to the locking rod on both side walls of the mounting housing, a pull rod being provided in the inner ring of the spring, and one end of the pull rod being fixedly connected to the mounting plate.

[0012] Preferably, the air-cooling assembly includes a U-shaped slide rail bracket fixedly connected to both sides of the radiator body, a reciprocating lead screw rotatably connected inside the slide rail bracket, a positioning rod fixedly connected to the inner wall of the slide rail bracket, a support slider slidably connected to the outer wall of the positioning rod, and a cooling fan connected to a motor at the upper end of the support slider.

[0013] Beneficial effects

[0014] This invention provides a parallel fuel cell cooling system. Compared with the prior art, it has the following advantages:

[0015] Firstly, this invention distributes the coolant to the inlets of the heat-conducting shells of the two fuel cell stacks, achieving parallel heat dissipation. By adjusting the opening of the third three-way valve, the flow rate of coolant entering the radiator body can be flexibly controlled to meet the heat dissipation requirements under different operating conditions. At the same time, the adjustment of the first and second three-way valves can achieve a reasonable distribution of coolant between the two fuel cell stacks. Through the parallel heat dissipation design, the coolant is fully mixed and dissipated within the radiator body before being supplied to the two fuel cell stacks, achieving efficient heat transfer and dissipation. Sharing a single radiator body and related heat dissipation pipes greatly saves the space occupied by the system and reduces the system's manufacturing cost. Furthermore, by adjusting the third, first, and second three-way valves, the system can be flexibly adjusted according to the heat dissipation requirements under different operating conditions, improving the system's flexibility and adaptability.

[0016] Secondly, when the coolant passes through the filter housing on the first conduit, impurities are filtered by the filter screen inside the mounting housing. This filtration prevents impurities from clogging the heat sink or affecting heat dissipation, ensuring the continuous and efficient operation of the cooling system. When disassembling the mounting housing, pulling the lever compresses the locking rod through the mounting plate and spring inside the supporting housing, separating the locking rod from the locking hole on the mounting housing. This allows for regular cleaning of the filter screen, removing accumulated impurities and dirt and preventing damage to the cooling system. The quick-disassembly mechanism, consisting of the lever, locking rod, mounting plate, spring, and supporting housing, makes filter removal and cleaning simple and fast.

[0017] Thirdly, the reciprocating lead screw in this utility model is driven by a motor, and the support slider slides back and forth along the positioning rod via the reciprocating lead screw. This causes the cooling fans to slide back and forth on both sides of the battery stack for air cooling. The reciprocating sliding air cooling of the cooling fans on both sides of the battery stack can more evenly cover the surface of the battery stack, improve heat dissipation efficiency, and continuously change its position to dissipate heat in different areas. This helps to eliminate local overheating, improve the uniformity of heat dissipation, extend the service life of the battery stack, further enhance the heat dissipation effect, and improve the stability and reliability of the system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the heat-conducting outer shell of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting shell connection structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cooling fan connection structure of this utility model.

[0022] In the diagram: 1. Mounting base; 2. First fuel cell stack; 201. Second fuel cell stack; 3. Radiator body; 301. Thermal conductive shell; 302. Heat dissipation pipe; 4. First conduit; 401. Filter shell; 402. Second conduit; 403. Water pump; 404. First three-way valve; 405. Second three-way valve; 406. Third three-way valve; 5. Slide rail bracket; 501. Positioning rod; 502. Reciprocating screw; 503. Support slider; 504. Cooling fan; 6. Mounting shell; 601. Filter screen; 602. Clip hole; 603. Supporting shell; 604. Spring; 605. Mounting plate; 606. Clip rod; 607. Pull rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a parallel fuel cell heat dissipation system, including a mounting base 1, with a first fuel cell stack 2 and a second fuel cell stack 201 respectively disposed at both ends of the upper surface of the mounting base 1, and a heat dissipation mounting mechanism disposed on the first fuel cell stack 2 and the second fuel cell stack 201, the mounting mechanism including:

[0025] The heat dissipation assembly includes a heat sink body 3 fixedly connected to the center of the upper surface of the mounting base 1, a heat-conducting shell 301 fixedly connected to the upper surface of the first fuel cell stack 2, a heat dissipation pipe 302 fixed inside the heat-conducting shell 301, a first three-way valve 404 connected to the output end of the heat sink body 3, a second conduit 402 connected to one end of the first three-way valve 404 via a drive assembly, a third three-way valve 406 connected to the input end of the heat sink body 3, and a first conduit 4 connected to one end of the third three-way valve 406.

[0026] The protective components include a filter assembly for blocking impurities inside the first conduit 4, and air-cooling components for the battery stack on both sides of the radiator body 3. The filter assembly inside the first conduit 4 effectively blocks impurities from entering the radiator body 3, preventing system blockage and damage. At the same time, the air-cooling components on both sides of the radiator body 3 further enhance the heat dissipation effect and improve the stability and reliability of the system.

[0027] In a preferred embodiment, the drive assembly includes a water pump 403 fixedly connected to the output end of a first three-way valve 404, a second conduit 402 located at the output end of the water pump 403, the other end of the second conduit 402 fixedly connected to a heat dissipation pipe 302, a second three-way valve 405 fixedly connected to the output end of the radiator body 3, the second three-way valve 405 and the first three-way valve 404 being symmetrically arranged, the outlets of the heat-conducting shells 301 of the first fuel cell stack 2 and the second fuel cell stack 201 being connected to the inlet of the same radiator body 3, and the flow is split by the radiator to the inlet of the heat-conducting shells 301 of the two sets of batteries, that is, the two sets of fuel cells are connected in parallel, and the flow ratio of the radiator coolant to the two systems can be adjusted by a third three-way valve 406 provided on the inlet side of the radiator.

[0028] Specifically, the input end of the radiator body 3 is connected to the third three-way valve 406 via the first conduit 4. The third three-way valve 406 acts as a control valve for the coolant inlet, adjusting the coolant flow rate into the radiator body 3 as needed. After the radiator body 3 cools the coolant, its output end is connected to the first three-way valve 404. One end of the first three-way valve 404 is connected to the heat dissipation pipe 302 via a drive assembly including a water pump 403 and a second conduit 402, forming a coolant return path. The water pump 403 provides power to the coolant, enabling continuous circulation. In parallel cooling mode, the outlets of the heat-conducting shells 301 of the first fuel cell stack 2 and the second fuel cell stack 201 are connected to the same inlet of the radiator body 3. After the radiator body 3 cools the coolant uniformly, the coolant is diverted to the two fuel cell stacks through the adjustment of the first three-way valve 404 and the second three-way valve 405. The heat-conducting outer shell 301 of the fuel cell stack has an inlet for parallel heat dissipation. By adjusting the opening of the third three-way valve 406, the flow rate of coolant entering the radiator body 3 can be flexibly controlled to meet the heat dissipation requirements under different operating conditions. At the same time, the adjustment of the first three-way valve 404 and the second three-way valve 405 can achieve reasonable distribution of coolant between the two fuel cell stacks. Through the parallel heat dissipation design, the coolant is fully mixed and dissipated in the radiator body 3 before being supplied to the two fuel cell stacks, achieving efficient heat transfer and dissipation. Sharing a single radiator body 3 and related heat dissipation channels greatly saves the space occupied by the system and reduces the manufacturing cost of the system. Furthermore, by adjusting the third three-way valve 406, the first three-way valve 404, and the second three-way valve 405, the system can be flexibly adjusted according to the heat dissipation requirements under different operating conditions, improving the flexibility and adaptability of the system.

[0029] In a preferred embodiment, the filter assembly includes a filter housing 401 fixedly connected inside the first conduit 4, and an installation housing 6 connected by a snap-fit ​​assembly is disposed inside the filter housing 401. A filter screen 601 is fixedly connected inside the installation housing 6.

[0030] In a preferred embodiment, the engaging assembly includes a support housing 603 fixedly connected to both sides of the filter housing 401. A spring 604 is fixedly connected to the inner wall of the support housing 603, and a mounting plate 605 is fixedly connected to the end of the spring 604. A locking rod 606 is fixedly connected to the outer wall of the mounting plate 605. The mounting housing 6 is located inside the filter housing 401 and is slidably connected to the filter housing 401. The two side walls of the mounting housing 6 have locking holes 602 corresponding to the locking rod 606. A pull rod 607 is provided on the inner ring of the spring 604. One end of the pull rod 607 is fixedly connected to the mounting plate 605. The coolant of the radiator body 3 flows along the inside of the heat dissipation pipe 302 through the first conduit 4 and the second conduit 402 under the action of the water pump 403. When the coolant passes through the filter housing 401 on the first conduit 4, impurities are removed by the mounting rod 606 inside the filter housing 401. The filter 601 inside the housing 6 filters the coolant, preventing impurities from clogging the heat pipe 302 or affecting the heat dissipation effect, thus ensuring the continuous and efficient operation of the heat dissipation system. When disassembling the housing 6, pulling the lever 607 causes the locking lever 606 to be compressed inside the supporting housing 603 via the mounting plate 605 and spring 604. Then, the locking lever 606 separates from the locking hole 602 on the housing 6, allowing the housing 6 to be disassembled. This facilitates the regular cleaning of the filter 601, removing accumulated impurities and dirt and preventing them from damaging the heat dissipation system. The quick disassembly mechanism composed of the lever 607, locking lever 606, mounting plate 605, spring 604, and supporting housing 603 makes the disassembly and cleaning of the filter 601 simple and quick.

[0031] In a preferred embodiment, the air-cooling assembly includes a U-shaped slide rail bracket 5 fixedly connected to both sides of the radiator body 3. A reciprocating screw 502 is rotatably connected inside the slide rail bracket 5. A positioning rod 501 is fixedly connected to the inner wall of the slide rail bracket 5. A support slider 503 is slidably connected to the outer wall of the positioning rod 501. A cooling fan 504 connected to a motor is provided at the upper end of the support slider 503. The reciprocating screw 502 is driven by the motor, and the support slider 503 slides back and forth along the positioning rod 501 via the reciprocating screw 502, thereby driving the cooling fan 504 to perform reciprocating air cooling on both sides of the battery stack. The reciprocating air cooling of the cooling fan 504 on both sides of the battery stack can more evenly cover the surface of the battery stack, improve heat dissipation efficiency, and continuously change its position to dissipate heat in different areas, which helps to eliminate local overheating, improve the uniformity of heat dissipation, extend the service life of the battery stack, further enhance the heat dissipation effect, and improve the stability and reliability of the system.

[0032] Furthermore, motors, electric motors, and three-way valves not described in detail in this specification are all prior art known to those skilled in the art.

[0033] During operation, the input end of the radiator body 3 is connected to the third three-way valve 406 via the first conduit 4. The third three-way valve 406 acts as a control valve for the coolant inlet, adjusting the coolant flow rate into the radiator body 3 as needed. After the radiator body 3 cools the coolant, its output end is connected to the first three-way valve 404. One end of the first three-way valve 404 is connected to the heat dissipation pipe 302 via a drive assembly including a water pump 403 and a second conduit 402, forming a coolant return path. The water pump 403 provides power to the coolant, enabling continuous circulation. In parallel cooling mode, the outlets of the heat-conducting shells 301 of the first fuel cell stack 2 and the second fuel cell stack 201 are connected to the same inlet of the radiator body 3. The radiator body 3 cools the coolant inlet... After unified heat dissipation, the coolant is diverted to the inlet of the heat-conducting shell 301 of the two fuel cell stacks by adjusting the first three-way valve 404 and the second three-way valve 405, thus achieving parallel heat dissipation. By adjusting the opening of the third three-way valve 406, the flow rate of coolant entering the radiator body 3 can be flexibly controlled to meet the heat dissipation requirements under different operating conditions. At the same time, the adjustment of the first three-way valve 404 and the second three-way valve 405 can achieve reasonable distribution of coolant between the two fuel cell stacks. Through the parallel heat dissipation design, the coolant is fully mixed and dissipated in the radiator body 3 before being supplied to the two fuel cell stacks, achieving efficient heat transfer and dissipation. Sharing a radiator body 3 and related heat dissipation channels greatly saves the space occupied by the system.

[0034] Then, the coolant in the radiator body 3 flows along the inside of the heat sink 302 through the first conduit 4 and the second conduit 402 under the action of the water pump 403. When the coolant passes through the filter housing 401 on the first conduit 4, impurities are filtered by the filter screen 601 inside the mounting housing 6 inside the filter housing 401. The filter screen 601 inside the filter housing 401 filters impurities from the coolant, preventing impurities from clogging the heat sink 302 or affecting the heat dissipation effect, thereby ensuring the continuous and efficient operation of the heat dissipation system. Then, when disassembling the mounting housing 6, pull the lever. 607 causes the clamping rod 606 to be compressed inside the supporting housing 603 via the mounting plate 605 and spring 604. Then, the clamping rod 606 separates from the clamping hole 602 on the mounting housing 6, allowing the mounting housing 6 to be disassembled. This facilitates the regular cleaning of the filter screen 601. The reciprocating screw 502 is driven by a motor, and the supporting slider 503 slides back and forth along the positioning rod 501 via the reciprocating screw 502. This drives the cooling fan 504 to slide back and forth on both sides of the battery stack for air cooling, further improving the heat dissipation effect.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0036] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A parallel fuel cell heat dissipation system, comprising a mounting base (1), wherein a first fuel cell stack (2) and a second fuel cell stack (201) are respectively disposed at both ends of the upper surface of the mounting base (1), characterized in that: The first fuel cell stack (2) and the second fuel cell stack (201) are provided with a heat dissipation mounting mechanism, which includes: The heat dissipation assembly includes a heat sink body (3) fixedly connected to the center of the upper surface of the mounting base (1), a heat-conducting shell (301) fixedly connected to the upper surface of the first fuel cell stack (2), a heat dissipation pipe (302) fixed inside the heat-conducting shell (301), a first three-way valve (404) connected to the output end of the heat sink body (3), a second conduit (402) connected to one end of the first three-way valve (404) via a drive assembly, a third three-way valve (406) connected to the input end of the heat sink body (3), and a first conduit (4) connected to one end of the third three-way valve (406). The protective components include a filter assembly for blocking impurities inside the first conduit (4), and air-cooling components for the battery stack are provided on both sides of the radiator body (3).

2. The parallel fuel cell cooling system according to claim 1, characterized in that: The drive assembly includes a water pump (403) fixedly connected to the output end of a first three-way valve (404), a second conduit (402) located at the output end of the water pump (403), and the other end of the second conduit (402) fixedly connected to a heat sink (302).

3. The parallel fuel cell cooling system according to claim 1, characterized in that: The output end of the radiator body (3) is fixedly connected to a second three-way valve (405), and the second three-way valve (405) is symmetrically arranged with the first three-way valve (404).

4. The parallel fuel cell cooling system according to claim 1, characterized in that: The filter assembly includes a filter housing (401) fixedly connected inside the first conduit (4), and an installation housing (6) connected by a snap-fit ​​assembly is provided inside the filter housing (401). A filter screen (601) is fixedly connected inside the installation housing (6).

5. A parallel fuel cell cooling system according to claim 4, characterized in that: The locking assembly includes a support housing (603) fixedly connected to both sides of the filter housing (401). A spring (604) is fixedly connected to the inner wall of the support housing (603). A mounting plate (605) is fixedly connected to the end of the spring (604). A locking rod (606) is fixedly connected to the outer wall of the mounting plate (605). The mounting housing (6) is located inside the filter housing (401) and is slidably connected to the filter housing (401). The two side walls of the mounting housing (6) are provided with locking holes (602) corresponding to the locking rod (606). A pull rod (607) is provided on the inner ring of the spring (604). One end of the pull rod (607) is fixedly connected to the mounting plate (605).

6. The parallel fuel cell cooling system according to claim 1, characterized in that: The air-cooled assembly includes a U-shaped slide rail bracket (5) fixedly connected to both sides of the radiator body (3). A reciprocating lead screw (502) is rotatably connected inside the slide rail bracket (5). A positioning rod (501) is fixedly connected to the inner wall of the slide rail bracket (5). A support slider (503) is slidably connected to the outer wall of the positioning rod (501). A cooling fan (504) connected to a motor is provided at the upper end of the support slider (503).

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