Gas heat cycle management device of hydrogen fuel cell
By designing a hydrogen fuel cell gas-thermal cycle management device, using components such as heat transfer enclosure frame, heat absorption pipe and S-shaped energy release channel, the problem of insufficient heat release in the existing system is solved, and more efficient heat management and temperature control are achieved.
Patent Information
- Application Number
- CN202421514969.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The heat intensity of the heat exchange tubes of the existing hydrogen fuel cell gas-thermal cycle management system diffuses outward is limited, which makes it difficult to control the fuel cell temperature.
A hydrogen fuel cell gas-thermal cycle management device is designed, including a heat transfer enclosure frame, a heat absorption tube, an S-shaped energy release channel, etc. Through the combination of these components, more efficient heat absorption and release are achieved.
By increasing the heat release area and using the shrinkage and expansion section to accelerate the collision between the coolant and the inner wall of the channel, the heat exchange efficiency is significantly improved and the fuel cell temperature is effectively controlled.
Smart Images
Figure CN222813615U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a gas heat cycle management device for a hydrogen fuel cell. Background Art
[0002] The fuel cell system is the heart of the fuel cell vehicle, and the hydrogen circulation device is an important component of the system. During the continuous operation of the fuel cell system, the stack will generate continuous heat output, causing the temperature of the system to rise. As one of the important factors affecting the fuel cell system, temperature is mainly manifested in that an appropriate increase in temperature can increase the activity of the catalyst, increase the conductivity of the proton exchange membrane, and accelerate proton transfer; when the local temperature is too high, the corresponding proton membrane will be perforated, and the hydrogen in the flow channel will mix with the air, which will cause a safety accident. Therefore, it is necessary to manage the hydrogen fuel cell gas heat cycle to avoid excessive and rapid local temperature rise. The existing hydrogen fuel cell gas heat cycle management mainly dissipates heat through fuel cell radiation, while the circulating cooling water takes away the heat, so that the water generated inside the system is vaporized and dissipated. The process of the stack temperature rising sharply is relatively rapid. The heat intensity of the heat exchange tube of the existing battery gas heat cycle management system is limited, which makes it difficult to control the temperature of the fuel cell. To this end, we propose a hydrogen fuel cell gas heat cycle management device. Utility Model Content
[0003] The purpose of the utility model is to provide a hydrogen fuel cell gas heat cycle management device to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogen fuel cell gas heat cycle management device, including a fuel cell stack, the surface of which is fully surrounded by a heat transfer enclosure frame, which provides anti-collision protection for the fuel cell stack and can transfer and release the heat generated by the fuel cell stack; a plurality of heat absorption tubes are welded on the surface of the heat transfer enclosure frame, and the heat absorption tubes are made of aluminum alloy, which can absorb the heat transferred by the heat transfer enclosure frame on the one hand, and on the other hand, the interior of the heat absorption tube is filled with coolant, which can further absorb the heat released by the heat transfer enclosure frame; one side of the plurality of heat absorption tubes is connected to a coolant recovery hood, which can receive the coolant flowing out of the heat absorption tube, and one end of the coolant recovery hood A discharge pipe is connected, one end of which is connected to an S-shaped energy release channel through a deionizer. The S-shaped energy release channel can increase the heat release area compared to the traditional long straight channel. At the same time, the contraction and expansion sections of the S-shaped energy release channel can cause the coolant to collide with the inner wall of the S-shaped energy release channel multiple times, thereby accelerating the release rate of heat in the coolant and improving the heat exchange efficiency. A heat sink group is welded on the surface of the S-shaped energy release channel, and both ends of the S-shaped energy release channel are connected to heat exchange chambers. One end of the S-shaped energy release channel is connected to a coolant tank, which can temporarily store the coolant. The top of the coolant tank is connected to an extraction channel through a lifting pump, and one end of the extraction channel is connected to a coolant release hood.
[0005] As a further solution of the utility model: the heat transfer enclosure frame is a U-shaped metal frame, and the heat transfer enclosure frame is made of aluminum alloy, which can quickly absorb and release the heat generated by the battery stack, which is beneficial to accelerating the heat conversion efficiency.
[0006] As a further solution of the utility model: a plurality of the heat absorbing tubes are linearly distributed at equal intervals on the surface of the heat transfer enclosure frame, and gaps are formed between adjacent heat absorbing tubes. On the one hand, the gaps between adjacent heat absorbing tubes can prevent the heat absorbing tubes from affecting each other. At the same time, the formed gaps can provide space for the connection of support rods.
[0007] As a further solution of the utility model: the coolant recovery hood is a trumpet-shaped sealed cavity with a hollow interior, and a sealing ring is glued and connected to the connection between the coolant recovery hood and the discharge pipe, which is beneficial to improve the sealing of the coolant recovery hood connection.
[0008] As a further solution of the utility model: the S-shaped energy release channel includes a hollow tube with at least two contraction sections and an arc-shaped tube, the arc-shaped tube is connected between the two hollow tubes, the S-shaped energy release channel is an aluminum alloy pipe, and the S-shaped energy release channel has contraction and expansion sections, which can cause the coolant to collide with the inner wall of the S-shaped energy release channel multiple times, thereby accelerating the release rate of heat in the coolant.
[0009] As a further solution of the utility model: the coolant release cover is connected to the heat absorption tube at one end of the coolant recovery cover, and the coolant release cover is connected to the coolant recovery cover through the heat absorption tube, so that the coolant can circulate and cool the battery stack.
[0010] As a further solution of the utility model: the top of the heat exchange chamber is connected to a supply pipe, a joint is welded at one end of the supply pipe, a water pump is installed at the connection between the supply pipe and the heat exchange chamber, a valve is installed at the connection between the top of the heat exchange chamber and the S-shaped energy release channel, a connecting pipe is connected to the side of the heat exchange chamber, a plugging cover is threadedly connected to the opening of the connecting pipe, and the connecting pipe can be connected to an external water delivery pipeline to fill the interior of the heat exchange chamber with low-temperature water.
[0011] As a further solution of the utility model: a support rod is welded on the surface of the heat transfer enclosure frame, a drainage fan is fixed at one end of the support rod, and the drainage fan can perform airflow heat dissipation on the battery stack.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The utility model is connected with an S-shaped energy release channel through one end of the discharge pipe. The S-shaped energy release channel can increase the heat release area compared with the traditional long straight channel. At the same time, the contraction and expansion sections of the S-shaped energy release channel can cause the coolant to collide with the inner wall of the S-shaped energy release channel multiple times, thereby accelerating the release rate of heat in the coolant and improving the heat exchange efficiency.
[0014] 2. The utility model sets the heat absorption tube to be made of aluminum alloy, which can absorb the heat transferred by the heat transfer frame on the one hand, and on the other hand, the interior of the heat absorption tube is filled with coolant, which can further absorb the heat released by the heat transfer frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;
[0016] Figure 2 This is a diagram of the connection structure of the S-shaped energy release channel of the utility model.
[0017] In the figure: 1. Battery stack; 2. Heat transfer enclosure frame; 3. Heat absorption tube; 4. Coolant recovery cover; 5. Discharge pipe; 6. Deionizer; 7. S-shaped energy release channel; 8. Heat sink group; 9. Coolant tank; 10. Supply pipe; 11. Water pump; 12. Connecting pipe; 13. Connector; 14. Valve; 15. Lifting pump; 16. Extraction channel; 17. Coolant release cover; 18. Support rod; 19. Drainage fan; 20. Heat exchange chamber. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-Figure 2 The utility model provides a technical solution: a hydrogen fuel cell gas heat cycle management device, including a fuel cell stack 1, the surface of the fuel cell stack 1 is fully surrounded by a heat transfer enclosure frame 2, the heat transfer enclosure frame 2 provides anti-collision protection for the fuel cell stack 1, and can transfer and release the heat generated by the fuel cell stack 1, a plurality of heat absorption tubes 3 are welded on the surface of the heat transfer enclosure frame 2, the heat absorption tubes 3 are made of aluminum alloy, on the one hand, can absorb the heat transferred by the heat transfer enclosure frame 2, on the other hand, the interior of the heat absorption tube 3 is filled with coolant, which can further absorb the heat released by the heat transfer enclosure frame 2; one side of the plurality of heat absorption tubes 3 is connected to a coolant recovery cover 4, the coolant recovery cover 4 can receive the coolant flowing out of the heat absorption tube 3, one end of the coolant recovery cover 4 is connected to a discharge pipe 5, the discharge pipe 5 One end is connected to an S-shaped energy release channel 7 through a deionizer 6. The S-shaped energy release channel 7 includes a hollow tube with at least two contraction sections and an arc tube. The arc tube is connected between the two hollow tubes. The S-shaped energy release channel 7 is an aluminum alloy pipe. The contraction and expansion sections of the S-shaped energy release channel 7 can cause the coolant to collide with the inner wall of the S-shaped energy release channel 7 multiple times, thereby accelerating the release rate of heat in the coolant. The S-shaped energy release channel 7 can increase the heat release area compared to the traditional long straight channel. At the same time, the contraction and expansion sections of the S-shaped energy release channel 7 can cause the coolant to collide with the inner wall of the S-shaped energy release channel 7 multiple times, thereby accelerating the release rate of heat in the coolant and improving the heat exchange efficiency. A heat sink group 8 is welded on the surface of the S-shaped energy release channel 7.
[0020] Both ends of the S-shaped energy release channel 7 are connected to the heat exchange chamber 20, one end of the S-shaped energy release channel 7 is connected to the coolant tank 9, the coolant tank 9 can temporarily store the coolant, the top of the coolant tank 9 is connected to the extraction channel 16 through the lifting pump 15, and one end of the extraction channel 16 is connected to the coolant release cover 17.
[0021] Preferably, Figure 1 As shown, the heat transfer enclosure frame 2 is a U-shaped metal frame, and the heat transfer enclosure frame 2 is made of aluminum alloy, which can quickly absorb and release the heat generated by the battery stack 1, which is beneficial to accelerating the heat conversion efficiency.
[0022] Preferably, Figure 1As shown, a plurality of heat absorbing tubes 3 are linearly distributed at equal intervals on the surface of the heat transfer enclosure frame 2, and gaps are formed between adjacent heat absorbing tubes 3. On the one hand, the gaps between adjacent heat absorbing tubes 3 can prevent the heat absorbing tubes 3 from influencing each other. At the same time, the formed gaps can provide space for the connection of the support rods 18.
[0023] Preferably, Figure 1 As shown, the coolant recovery cover 4 is a trumpet-shaped sealed cavity with a hollow interior, and a sealing ring is glued and connected to the connection between the coolant recovery cover 4 and the discharge pipe 5, which is beneficial to improve the sealing of the connection of the coolant recovery cover 4.
[0024] Preferably, Figure 2 As shown, the coolant release cover 17 is connected to the heat absorption tube 3 at one end relative to the coolant recovery cover 4. The coolant release cover 17 is connected to the coolant recovery cover 4 through the heat absorption tube 3, so that the coolant can circulate and cool the battery stack 1.
[0025] Preferably, Figure 1 As shown, the top of the heat exchange chamber 20 is connected to a supply pipe 10, one end of the supply pipe 10 is welded with a joint 13, a water pump 11 is installed at the connection between the supply pipe 10 and the heat exchange chamber 20, a valve 14 is installed at the connection between the top of the heat exchange chamber 20 and the S-shaped energy release channel 7, a connecting pipe 12 is connected to the side of the heat exchange chamber 20, a plugging cover is threadedly connected to the opening of the connecting pipe 12, and the connecting pipe 12 can be connected to an external water flow delivery pipeline to fill the interior of the heat exchange chamber 20 with low-temperature water.
[0026] Preferably, Figure 1 As shown, a support rod 18 is welded on the surface of the heat transfer enclosure frame 2 , and a drainage fan 19 is fixed at one end of the support rod 18 . The drainage fan 19 can perform airflow heat dissipation on the battery stack 1 .
[0027] Working principle: When in use, the input end of the management device is electrically connected to the external power supply, the lifting pump 15 is started, and the coolant in the coolant tank 9 is lifted to the coolant release cover 17 through the extraction channel 16, and the coolant is passed into several heat transfer enclosure frames 2 through the coolant release cover 17. When the coolant flows through the heat transfer enclosure frame 2, it can absorb the heat released by the heat transfer enclosure frame 2. The coolant after absorbing the heat further enters the discharge pipe 5 through the coolant recovery cover 4. The coolant in the discharge pipe 5 further enters the deionizer 6 to remove free positive and negative ions. The coolant flows out of the deionizer 6 to the S-shaped energy release channel 7, and releases heat to the water body in the heat exchange cavity 20 through the S-shaped energy release channel 7, so as to heat the water body in the heat exchange cavity 20. The heated water flow can be guided to the heating end through the supply pipe 10, and the coolant after releasing heat in the heat exchange cavity 20 flows back into the coolant tank 9 for storage.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hydrogen fuel cell gas heat cycle management device, comprising a fuel cell stack (1), characterized in that: The surface of the battery stack (1) is fully enclosed and clamped with a heat transfer enclosure frame (2); a plurality of heat absorption tubes (3) are welded to the surface of the heat transfer enclosure frame (2); one side of the plurality of heat absorption tubes (3) is connected to a coolant recovery cover (4); one end of the coolant recovery cover (4) is connected to a discharge pipe (5); one end of the discharge pipe (5) is connected to an S-shaped energy release channel (7) via a deionizer (6); a heat sink group (8) is welded to the surface of the S-shaped energy release channel (7); both ends of the S-shaped energy release channel (7) are connected to a heat exchange cavity (20); one end of the S-shaped energy release channel (7) is connected to a coolant tank (9); the top of the coolant tank (9) is connected to an extraction channel (16) via a lift pump (15); one end of the extraction channel (16) is connected to a coolant release cover (17).
2. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: The heat transfer enclosure frame (2) is a U-shaped metal frame, and the heat transfer enclosure frame (2) is made of aluminum alloy.
3. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: A plurality of the heat absorbing tubes (3) are linearly distributed at equal intervals on the surface of the heat transfer surrounding frame (2), and gaps are formed between adjacent heat absorbing tubes (3).
4. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: The coolant recovery cover (4) is a trumpet-shaped sealed cavity with a hollow interior, and a sealing ring is glued and connected at the connection between the coolant recovery cover (4) and the discharge pipe (5).
5. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: The S-shaped energy release channel (7) comprises a hollow tube having at least two contraction sections and an arc-shaped tube, the arc-shaped tube is connected between the two hollow tubes, and the S-shaped energy release channel (7) is an aluminum alloy pipe.
6. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: The coolant release cover (17) is connected through the heat absorption pipe (3) at one end relative to the coolant recovery cover (4), and the coolant release cover (17) is connected to the coolant recovery cover (4) through the heat absorption pipe (3).
7. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: The top of the heat exchange chamber (20) is connected to a supply pipe (10), one end of the supply pipe (10) is welded with a joint (13), a water pump (11) is installed at the connection between the supply pipe (10) and the heat exchange chamber (20), a valve (14) is installed at the connection between the top of the heat exchange chamber (20) and the S-shaped energy release channel (7), a connecting pipe (12) is connected to the side of the heat exchange chamber (20), and a plugging cover is threadedly connected to the opening of the connecting pipe (12).
8. A hydrogen fuel cell gas heat cycle management device according to claim 1, characterized in that: A support rod (18) is welded to the surface of the heat transfer enclosing frame (2), and a drainage fan (19) is fixed to one end of the support rod (18).