CN220021175U - Auxiliary emptying device for fuel cell cooling system - Google Patents
Auxiliary emptying device for fuel cell cooling system Download PDFInfo
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- CN220021175U CN220021175U CN202320598558.9U CN202320598558U CN220021175U CN 220021175 U CN220021175 U CN 220021175U CN 202320598558 U CN202320598558 U CN 202320598558U CN 220021175 U CN220021175 U CN 220021175U
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- pipeline
- fuel cell
- exhaust pipe
- pipe
- exhaust
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- 239000000446 fuel Substances 0.000 title claims abstract description 76
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 230000017525 heat dissipation Effects 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 6
- 230000001502 supplementing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model relates to the technical field of fuel cell debugging equipment, and discloses an auxiliary evacuating device for a fuel cell cooling system, which comprises a three-way pipeline, an opening valve, an exhaust pipe and a water leakage sheath, wherein the three-way pipeline comprises a main pipeline for being connected with a fuel cell heat dissipation pipeline and a branch pipeline connected with the main pipeline, the opening valve is arranged on the branch pipeline, the exhaust pipe is used for being arranged in the branch pipeline in a penetrating way, the exhaust pipe is of a flexible structure, the water leakage sheath can be axially and telescopically connected between the branch pipeline and the exhaust pipe in a sealing way, the exhaust pipe comprises a pipeline endoscope and an exhaust channel which is arranged in parallel with the pipeline endoscope, the inner end of the exhaust channel is used for being inserted into an air cavity of the fuel cell heat dissipation pipeline, and the outer end of the exhaust channel is used for being connected with a water pump arranged outside. Through this auxiliary emptying devices need not increase the gas vent on the cooling tube way, utilize the current pipeline port of cooling tube way to insert three-way line can, need not wait for the material, also need not to rework, guaranteed the engineering progress.
Description
Technical Field
The utility model relates to the technical field of fuel cell debugging equipment, in particular to an auxiliary emptying device for a fuel cell cooling system.
Background
The heat dissipation system is used for controlling the temperature of the fuel cell of the new energy automobile and ensuring the working efficiency of the fuel cell. When the hydrogen fuel cell is matched with a whole vehicle design heat dissipation system, an evacuation pipe of a heat dissipation pipeline is required to be designed, and the real vehicle assembly verification is carried out, and the pipeline of the heat dissipation system is evacuated by using the evacuation pipe so as to remove air in the pipeline.
The evacuation effect of the evacuation line directly affects the heat dissipation uniformity of the fuel cell system, and if the heat dissipation is uneven, the risk of damaging the fuel cell system is reduced. If the emptying effect of the fruit vehicle is poor, the probability of uneven heat dissipation is high, rectification is needed, and the heat dissipation pipeline is generally modified and the exhaust port is increased. When the exhaust port is increased in the transformation object, the material transformation of the pipeline system needs to wait 3-5 days, and the possibility of reworking for multiple times when the transformation effect is not proper is provided, so that the engineering progress is influenced.
Disclosure of Invention
The purpose of the utility model is that: an auxiliary emptying device for a fuel cell cooling system is provided, so that the problem that the engineering progress is affected by improving a heat dissipation pipeline in the prior art and increasing auxiliary emptying of an exhaust port is solved.
In order to achieve the above object, the present utility model provides an auxiliary evacuation device for a fuel cell cooling system, comprising a three-way pipe, an opening and closing valve, an exhaust pipe and a water leakage sheath, wherein the three-way pipe comprises a main pipe for connecting with a fuel cell heat dissipation pipe and a branch pipe connected with the main pipe, the opening and closing valve is arranged on the branch pipe, the exhaust pipe is used for being worn in the branch pipe, the exhaust pipe is of a flexible structure capable of being bent, the water leakage sheath is connected between the branch pipe and the exhaust pipe in an axially telescopic and sealing manner, the exhaust pipe comprises a pipeline endoscope and an exhaust channel arranged in parallel with the pipeline endoscope, the inner end of the exhaust channel is used for being inserted into an air cavity of the fuel cell heat dissipation pipe, and the outer end of the exhaust channel is used for being connected with a water pump arranged outside.
Preferably, the opening and closing valve is a manual ball valve, and the exhaust pipe is telescopically arranged in the manual ball valve in a penetrating way when the manual ball valve is in an opening state.
Preferably, the branch pipeline and the main pipeline are obliquely arranged, and a radial interval is arranged between one end of the break valve away from the main pipeline and the main pipeline.
Preferably, an included angle between the branch pipeline and the main pipeline is 45 degrees.
Preferably, the water leakage sheath comprises a top connecting section, a middle telescopic section and a bottom connecting section which are sequentially connected, wherein the top connecting section is fixedly bonded with the exhaust pipe, the bottom connecting section is fixedly sleeved on the break valve, and the bottom connecting section is connected with the break valve through a clamp.
Preferably, the pipe diameter of the top connecting section is smaller than the pipe diameter of the bottom connecting section.
Preferably, the middle telescopic section is of a corrugated pipe structure.
Preferably, the pipeline endoscope is arranged in the middle of the exhaust pipe, a plurality of exhaust channels are arranged at intervals along the circumferential direction of the pipeline endoscope, and a spray head is arranged at the inner end of each exhaust channel.
Compared with the prior art, the auxiliary emptying device for the fuel cell cooling system has the beneficial effects that: when the fuel cell heat dissipation pipeline is emptied, the main pipeline of the three-way pipeline is connected into the fuel cell heat dissipation pipeline, the opening and closing valve is opened, the exhaust pipe is inserted into the heat dissipation pipeline of the fuel cell through the main pipeline after passing through the branch pipeline, at the moment, the water leakage sheath can avoid the leakage of liquid in the fuel cell heat dissipation pipeline, and as the exhaust pipe is of a flexible structure, under the visual guidance of an endoscope, an operator can control the exhaust pipe to stretch and retract in the fuel cell heat dissipation pipeline and drive the water leakage sheath to stretch and retract axially until the inner end of the exhaust channel extends into a gas position, at the moment, the operator can perform water supplementing and air extraction circulating operation through the external water pump to remove gas in the fuel cell heat dissipation pipeline; after the evacuation is realized, the exhaust pipe and the water leakage sheath can be removed, the manual ball valve is closed, and the evacuation operation is completed; through this auxiliary emptying devices need not increase the gas vent on the cooling tube way, utilize the current pipeline port of cooling tube way to insert three-way line can, need not wait for the material, also need not to rework, guaranteed the engineering progress.
Drawings
FIG. 1 is a schematic view of the auxiliary drain for a fuel cell cooling system of the present utility model;
FIG. 2 is a schematic end view of an exhaust pipe of the auxiliary exhaust device for the fuel cell cooling system of FIG. 1;
FIG. 3 is a schematic illustration of the connection of a water leakage jacket to an exhaust pipe of the auxiliary drain for the fuel cell cooling system of FIG. 1;
fig. 4 is a schematic illustration of the connection of the water leakage jacket to the on-off valve of the auxiliary drain for the fuel cell cooling system of fig. 1.
In the figure, 1, a three-way pipeline, 11, a main pipeline, 12, a branch pipeline, 2, an on-off valve, 3, an exhaust pipe, 31, a pipeline endoscope, 32, an exhaust channel, 4, a water leakage sheath, 41, a top connecting section, 42, a middle telescopic section, 43, a bottom connecting section, 5 and a fuel cell heat dissipation pipeline.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
A preferred embodiment of an auxiliary drain for a fuel cell cooling system of the present utility model, as shown in fig. 1 to 4, includes a three-way pipe 1, an opening and closing valve 2, an exhaust pipe 3, and a water leakage sheath 4.
The three-way pipeline 1 comprises a main pipeline 11 and a branch pipeline 12, wherein the main pipeline 11 is used for being connected into the fuel cell heat dissipation pipeline 5, and the branch pipeline 12 is communicated with the main pipeline 11. The fuel cell heat dissipation pipe 5 is typically formed by connecting a plurality of pipes, and when the fuel cell heat dissipation pipe 5 is emptied, two of the connected pipes may be disconnected, and the main pipe 11 may be connected into the fuel cell heat dissipation pipe 5 at the disconnection. In this embodiment, the diameter of the main pipe 11 and the branch pipe 12 of the three-way joint is 30mm.
The on-off valve 2 is arranged on the branch pipe 12 for controlling the on-off of the branch pipe 12. The exhaust pipe 3 is used for being installed in the branch pipeline 12 in a penetrating way, when the cut-off valve 2 is opened, the exhaust pipe 3 can enter the main pipeline 11 through the cut-off valve 2 after penetrating the branch pipeline 12, and then the main pipeline 11 stretches into the fuel cell heat dissipation pipeline 5 to exhaust gas in the fuel cell heat dissipation pipeline 5.
The exhaust pipe 3 is a flexible structure capable of being bent in a controllable manner, and since the fuel cell heat dissipation pipeline 5 is generally provided with a plurality of bends, the exhaust pipe 3 can be bent in a simple direction due to the flexible structure, so that the exhaust pipe is led to extend into the position where gas gathers in the fuel cell heat dissipation pipeline 5. In this embodiment, the diameter of the exhaust pipe 3 is 20mm.
The water leakage sheath 4 is connected between the branch pipeline 12 and the exhaust pipe 3, and the water leakage sheath 4 is respectively and hermetically connected with the branch pipeline 12 and the exhaust pipe 3 so as to ensure the tightness of the auxiliary emptying device and avoid the leakage of liquid in the fuel cell heat dissipation pipeline 5 when the opening and closing valve 2 is opened and the exhaust pipe 3 stretches out and draws back. The water leakage sheath 4 is of an axially telescopic structure, and when the exhaust pipe 3 stretches in the fuel cell heat dissipation pipeline 5, the water leakage sheath 4 can be driven to stretch synchronously, so that leakage caused by a gap between the water leakage sheath 4 and the exhaust pipe 3 is avoided.
The exhaust pipe 3 includes a duct endoscope 31 and an exhaust passage 32, and the duct endoscope 31 is used for collecting information inside the fuel cell heat dissipation pipe 5 and feeding back to an operator for the operator to determine the position of gas accumulation. The pipeline endoscope 31 is used as an existing product, the outer end of the pipeline endoscope 31 is connected with a remote control handle, the inner end of the pipeline endoscope is provided with a camera, an operator can control the pipeline endoscope 31 to turn through the remote control handle, and the position of gas is judged through information collected by the camera to assist in evacuation; the end of the endoscope 31 is covered with a transparent plastic film, and is waterproof against intrusion. The detailed construction of the endoscope 31 is conventional and will not be described in detail here.
The exhaust passage 32 is arranged in parallel with the tube endoscope 31, an inner end of the exhaust passage 32 is used for being inserted into an air cavity of the fuel cell heat dissipation tube 5, namely, a collecting position of air in the fuel cell heat dissipation tube 5, and an outer end of the exhaust passage 32 is used for being connected with a water pump of an external device. Because the density of the gas is small, the gas is usually gathered at the high position of the fuel cell heat dissipation pipeline 5, and an operator turns through the control pipeline endoscope 31 after observing the air cavity through the endoscope to drive the exhaust pipe 3 to turn, so that the inner end of the exhaust pipe 3 extends into the air cavity position of the fuel cell heat dissipation pipeline 5. The peripheral water pump carries out water supplementing and air exhausting circulation operation through the air exhaust pipe 3 channels, and the air in the fuel cell heat dissipation pipeline 5 is removed.
When the auxiliary evacuating device is used for evacuating the fuel cell heat dissipation pipeline 5, the main pipeline 11 of the three-way pipeline 1 is connected into the fuel cell heat dissipation pipeline 5, the opening valve 2 is opened, the exhaust pipe 3 is inserted into the heat dissipation pipeline of the fuel cell through the main pipeline 11 after passing through the branch pipeline 12, at the moment, the water leakage sheath 4 can avoid the leakage of liquid in the fuel cell heat dissipation pipeline 5, and because the exhaust pipe 3 is of a flexible structure which can be bent, under the visual guidance of an endoscope, an operator can control the exhaust pipe 3 to stretch in the fuel cell heat dissipation pipeline 5 and drive the water leakage sheath 4 to stretch axially until the inner end of the exhaust channel 32 stretches into a gas position, at the moment, the operator can perform water supplementing and air exhausting circulation operation through a water pump arranged outside to remove the gas in the fuel cell heat dissipation pipeline 5; after the evacuation is realized, the exhaust pipe 3 can be pumped to the outer end of the break valve 2, the break valve is closed, the water leakage sheath 4 is removed, and the evacuation operation is completed; through this auxiliary emptying devices need not increase the gas vent on the cooling tube way, utilize the current pipeline junction of cooling tube way to insert three-way line 1 can, need not wait for the material, also need not to rework, guaranteed the engineering progress. After the exhaust pipe 3 and the water leakage sheath 4 are removed, a heat dissipation water pump of the fuel cell heat dissipation pipeline 5 can be started to circulate water in the pipeline, and whether no load occurs or not is observed to confirm the gas evacuation effect in the pipeline.
Preferably, the opening and closing valve 2 is a manual ball valve, and the exhaust pipe 3 is telescopically arranged in the manual ball valve in an opening state of the manual ball valve.
The manual ball valve has the advantages of simple structure, convenient operation and low cost, and can be directly applied by adopting the existing products. In addition, after the manual ball valve is opened, the internal channel is coaxial with the central line of the branch pipeline, so that the exhaust pipe 3 is conveniently inserted into the branch pipeline and enters the fuel cell heat dissipation pipeline 5 through the main pipeline, and the use is convenient. In this embodiment, the pipe diameter of the manual ball valve is 38mm.
Preferably, the branch line 12 is arranged obliquely to the main line 11, with a radial spacing between the end of the shut-off valve 2 remote from the main line 11 and the main line 11.
Since the gas is lighter in density than the liquid, which is generally concentrated at a high level of the fuel cell heat dissipation pipe 5, the end of the opening and closing valve 2 remote from the main pipe 11 naturally tilts outward and away from the main pipe 11 after the branch pipe 12 is arranged obliquely. After the main pipeline 11 is connected to the fuel cell heat dissipation pipeline 5, the cut-off valve 2 can be extended upwards on the premise of no interference to the structure, the height of the end part of the cut-off valve 2 is improved, and even the end of the cut-off valve 2 far away from the main pipeline 11 is higher than the high position of the fuel cell heat dissipation pipeline 5, so that liquid leakage is avoided.
Preferably, the angle between the branch line 12 and the main line 11 is 45 degrees.
The angle of 45 degrees makes the direction of insertion of the exhaust pipe 3 form an obtuse angle with the fuel cell heat dissipation pipeline 5, so that the exhaust pipe 3 can sequentially extend into the fuel cell heat dissipation pipeline 5.
Preferably, the water leakage sheath 4 comprises a top connecting section 41, a middle telescopic section 42 and a bottom connecting section 43 which are sequentially connected, wherein the top connecting section 41 is fixedly bonded with the exhaust pipe 3, the bottom connecting section 43 is fixedly sleeved on the break valve 2, and the bottom connecting section 43 is connected with the break valve 2 through a clamp.
The top connecting section 41 is fixedly bonded with the exhaust pipe 3, and the water leakage sheath 4 and the exhaust pipe 3 are connected into a whole in a bonding mode, so that the tightness between the water leakage sheath 4 and the exhaust pipe 3 is ensured, and the water leakage sheath 4 can synchronously stretch along with the exhaust pipe 3. The bottom connecting section 43 is connected with the break valve 2 through a clamp, the water leakage sheath 4 and the tightness are increased by the clamp, and meanwhile, the water leakage sheath 4 and the break valve 2 are detachably connected, so that the water leakage sheath 4 and the exhaust pipe 3 can be conveniently detached after the emptying is finished. The middle telescopic section 42 enables the water leakage sheath 4 to be telescopic to a certain extent in the axial direction, and the requirement of synchronous telescopic along with the exhaust pipe 3 is met.
Preferably, the pipe diameter of the top connecting section 41 is smaller than the pipe diameter of the bottom connecting section 43.
The exhaust pipe 3 is inserted into the break valve 2, the outer diameter of the exhaust pipe 3 is smaller than that of the break valve 2, and the pipe diameter of the top connecting section 41 is smaller than that of the bottom connecting section 43, so that the connection with the break valve 2 and the exhaust pipe 3 is facilitated. In this embodiment, the top connecting section 41 has a diameter of 20mm and the bottom connecting section 43 has a diameter of 38mm.
Preferably, the middle telescoping section 42 is of bellows construction.
The bellows structure can be expanded and folded to realize expansion by utilizing the corrugation, and is convenient to process and use as a maturation process. In other embodiments, the middle telescopic section 42 may also be a telescopic tube formed by connecting a plurality of axial telescopic joints.
Preferably, the duct endoscope 31 is disposed in the middle of the exhaust duct 3, a plurality of exhaust passages 32 are arranged at intervals in the circumferential direction of the duct endoscope 31, and a shower head is arranged at the inner end of each exhaust passage 32.
The exhaust channels 32 are arranged in a plurality, the inner ends of the exhaust channels 32 are provided with spray heads, and the exhaust channels 32 can synchronously perform water supplementing and air exhausting circulation operation, so that the exhausting efficiency can be increased.
In summary, the embodiment of the utility model provides an auxiliary evacuating device for a fuel cell cooling system, when evacuating a fuel cell heat dissipation pipeline, a main pipeline of a three-way pipeline is connected into the fuel cell heat dissipation pipeline, an opening and closing valve is opened, an exhaust pipe is inserted into the heat dissipation pipeline of a fuel cell through the main pipeline after passing through a branch pipeline, at the moment, a water leakage sheath can avoid liquid leakage in the fuel cell heat dissipation pipeline, and because the exhaust pipe is of a flexible structure capable of bending, under the visual guidance of an endoscope, an operator can control the exhaust pipe to stretch in the fuel cell heat dissipation pipeline and drive the water leakage sheath to stretch in the axial direction until the inner end of an exhaust channel stretches into a gas position, at the moment, the operator can perform water supplementing and air exhausting circulation operation through an external water pump to remove gas in the fuel cell heat dissipation pipeline; after the evacuation is realized, the exhaust pipe and the water leakage sheath can be removed, the manual ball valve is closed, and the evacuation operation is completed; through this auxiliary emptying devices need not increase the gas vent on the cooling tube way, utilize the current pipeline port of cooling tube way to insert three-way line can, need not wait for the material, also need not to rework, guaranteed the engineering progress.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (8)
1. The auxiliary emptying device for the fuel cell cooling system is characterized by comprising a three-way pipeline, an opening and closing valve, an exhaust pipe and a water leakage sheath, wherein the three-way pipeline comprises a main pipeline for being connected with a fuel cell heat dissipation pipeline and a branch pipeline connected with the main pipeline, the opening and closing valve is arranged on the branch pipeline, the exhaust pipe is used for being arranged in the branch pipeline in a penetrating mode, the exhaust pipe is of a flexible structure, the water leakage sheath is connected between the branch pipeline and the exhaust pipe in an axially telescopic and sealing mode, the exhaust pipe comprises a pipeline endoscope and an exhaust channel which is arranged in parallel with the pipeline endoscope, the inner end of the exhaust channel is used for being inserted into an air cavity of the fuel cell heat dissipation pipeline, and the outer end of the exhaust channel is used for being connected with an external water pump.
2. The auxiliary drain for a fuel cell cooling system according to claim 1, wherein the on-off valve is a manual ball valve, and the exhaust pipe is telescopically fitted in the manual ball valve in an opened state of the manual ball valve.
3. The auxiliary drain for a fuel cell cooling system according to claim 2, wherein the branch pipe is arranged obliquely to the main pipe, and an end of the shutoff valve remote from the main pipe is spaced radially from the main pipe.
4. A secondary evacuation apparatus for a fuel cell cooling system as claimed in claim 3, wherein an angle between the branch pipe and the main pipe is 45 degrees.
5. The auxiliary drain for a fuel cell cooling system according to any one of claims 1 to 4, wherein the water leakage sheath comprises a top connecting section, a middle telescopic section and a bottom connecting section which are sequentially connected, the top connecting section is fixedly bonded with the exhaust pipe, the bottom connecting section is fixedly sleeved on the break valve, and the bottom connecting section is connected with the break valve through a clamp.
6. The auxiliary drain device for a fuel cell cooling system according to claim 5, wherein the pipe diameter of the top connecting section is smaller than the pipe diameter of the bottom connecting section.
7. The auxiliary drain device for a fuel cell cooling system according to claim 5, wherein the middle expansion section is of a bellows structure.
8. The auxiliary drain for a fuel cell cooling system according to any one of claims 1 to 4, wherein the duct endoscope is disposed in a middle portion of the exhaust pipe, the exhaust passages are arranged in plurality at intervals along a circumferential direction of the duct endoscope, and a shower head is disposed at an inner end of each of the exhaust passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320598558.9U CN220021175U (en) | 2023-03-22 | 2023-03-22 | Auxiliary emptying device for fuel cell cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320598558.9U CN220021175U (en) | 2023-03-22 | 2023-03-22 | Auxiliary emptying device for fuel cell cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220021175U true CN220021175U (en) | 2023-11-14 |
Family
ID=88670559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320598558.9U Active CN220021175U (en) | 2023-03-22 | 2023-03-22 | Auxiliary emptying device for fuel cell cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220021175U (en) |
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2023
- 2023-03-22 CN CN202320598558.9U patent/CN220021175U/en active Active
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