CN214477787U - Hydrogen discharging device for storage battery - Google Patents
Hydrogen discharging device for storage battery Download PDFInfo
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- CN214477787U CN214477787U CN202121020589.3U CN202121020589U CN214477787U CN 214477787 U CN214477787 U CN 214477787U CN 202121020589 U CN202121020589 U CN 202121020589U CN 214477787 U CN214477787 U CN 214477787U
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- exhaust
- hydrogen
- storage battery
- control box
- exhaust hood
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 103
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 103
- 238000007599 discharging Methods 0.000 title abstract description 10
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 53
- 238000009423 ventilation Methods 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical group O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a storage battery hydrogen discharging device, which comprises an exhaust hood, an exhaust pipe, an air inlet window, a hydrogen concentration detector and a control box, wherein the upper part of an inner cavity of the exhaust hood is in a cone shape which is gradually reduced from bottom to top; the hydrogen concentration detector, the exhaust fan and the storage battery are electrically connected to the control box; the utility model discloses a hydrogen concentration detector, control box, exhaust fan and battery operating condition linkage judge and detect battery exhaust hydrogen, in case detect hydrogen concentration and exceed the threshold value, then control box control exhaust fan starts, exhausts the operation, has ensured the security that the battery used.
Description
Technical Field
The utility model relates to an intelligent control technical field especially relates to a battery hydrogen discharging device.
Background
Storage batteries are important energy storage devices and have been widely used in many industries. According to the working principle of lead-acid storage batteries, the positive active material of the lead-acid storage battery is lead dioxide, the negative active material of the lead-acid storage battery is spongy lead, the electrolyte is a dilute sulfuric acid solution, and when the charging is almost completed by 90%, the negative electrode starts to generate hydrogen. The hydrogen is flammable and explosive class A substances, and the explosion limit in the air is 4.1% -74.1%, so that the hydrogen concentration in the charging chamber can easily reach the explosion limit, and the explosion can be generated when meeting a fire source.
The problems existing in the prior art are as follows: the storage battery inevitably generates hydrogen especially in a floating charging stage, and the hydrogen reaches a certain concentration especially in a relatively closed space, so that great potential safety hazards exist. Therefore, how to clean the hydrogen discharged in the float charging stage during the use process of the storage battery is always a very interesting problem for the storage battery using party.
SUMMERY OF THE UTILITY MODEL
The utility model provides a storage battery hydrogen discharging device, including exhaust hood, blast pipe, air inlet window, hydrogen concentration detector, control box, the inner chamber upper portion of exhaust hood is the toper that reduces gradually from bottom to top, the inner chamber lower part of exhaust hood covers the battery completely including, the blast pipe sets up in the toper top of exhaust hood, the blast pipe communicates the inner chamber and the exterior space of exhaust hood, the outer end department that the blast pipe is located the exhaust hood is equipped with the gas vent, the air inlet window sets up in the bottom lateral wall of exhaust hood, hydrogen concentration detector sets up in the toper top of exhaust hood inner chamber, the control box sets up in the outer wall of exhaust hood, be equipped with exhaust fan on the exhaust passage of gas vent; the hydrogen concentration detector, the exhaust fan and the storage battery are electrically connected to the control box, the exhaust port is connected to a ventilation and exhaust system of an external space, and the joint of the inner wall of the exhaust hood is completely sealed; the hydrogen concentration detector, the control box, the exhaust fan and the working state of the storage battery are linked, the control box is used for detecting the difference value between the voltage of the storage battery and the power supply voltage so as to judge whether the storage battery is in a floating charge state, if the working state of the storage battery is charging, particularly in the floating charge state, the control box controls the hydrogen concentration detector to be started, and if the hydrogen concentration detector detects that the hydrogen concentration exceeds a threshold value, the control box controls the exhaust fan to be started to perform exhaust operation; or the hydrogen concentration detector is started in real time, and once the hydrogen concentration is detected to exceed the threshold value, the control box controls the exhaust fan to start to perform exhaust operation; because exhaust hood inner chamber top is the toper, and hydrogen density is less than the air, consequently, exhaust hydrogen is preferred to be gathered in exhaust hood inner chamber top, makes things convenient for the hydrogen concentration detector to measure simultaneously, ensures as long as there is some hydrogen to discharge, all can assemble in exhaust hood inner chamber top, when having ensured safety, has guaranteed measuring accuracy and foresight nature.
Preferably, the exhaust pipe is also provided with a gas collecting port at the outer end of the exhaust hood, the gas collecting port is connected with a gas collecting pipe, the other end of the gas collecting pipe is connected with a hydrogen gas collecting tank, and the gas collecting port is interlocked with the exhaust port switch; a gas collecting port and an exhaust port are arranged at the exhaust pipe, and the exhaust port is used for directly discharging hydrogen into the ventilation exhaust pipe for treatment under the condition that the ventilation exhaust pipe is arranged; under the condition that there is not the ventilation exhaust duct, collect the processing through the hydrogen gas collecting tank that the gas collection mouth is connected to local hydrogen to cause danger when pollution environment.
Preferably, a first switch valve is arranged at the gas collecting port, a second switch valve is arranged at the hydrogen gas collecting tank, and the first switch valve and the second switch valve are electrically connected to the control box; first ooff valve, second ooff valve are favorable to cutting off the gas passage between gaseous collection mouth and the hydrogen gas collection jar through the control box, prevent that the hydrogen of gaseous collection mouth department from continuing to discharge, prevent simultaneously that the hydrogen of collecting in the hydrogen gas collection jar from leaking, make things convenient for operating personnel to carry out more the gas jar after hydrogen gas collection jar gas is full.
Preferably, the control box is provided with a liquid crystal display, an input keyboard and an indicator light; can survey exhaust state and relevant warning information in real time through the display, can carry out manual operation to exhaust fan, first ooff valve, second ooff valve through the input keyboard, make things convenient for artifical exhaust, change hydrogen gas collection tank and shut down the detection.
Preferably, the indicator lamps comprise a work indicator lamp, a sleep indicator lamp, an exhaust indicator lamp, a gas full tank change indicator lamp and a fault indicator lamp.
The utility model has the advantages that:
1. the utility model discloses a hydrogen concentration detector, control box, exhaust fan and battery operating condition linkage judge and detect battery exhaust hydrogen, in case detect hydrogen concentration and exceed the threshold value, then control box control exhaust fan starts, exhausts the operation, has ensured the security that the battery used.
2. The utility model discloses a set up exhaust hood inner chamber top into the toper, because hydrogen density is less than the air, consequently, exhaust hydrogen is preferred to be gathered in exhaust hood inner chamber top, makes things convenient for hydrogen concentration detector to carry out measuring in, ensures as long as there is some hydrogen emissions, all can assemble in exhaust hood inner chamber top, when having ensured safety, has guaranteed measuring accuracy and foresight nature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a perspective sectional view of a hydrogen discharge apparatus for a battery;
FIG. 2 is an enlarged view of the direction A of FIG. 1;
FIG. 3 is a perspective exterior view;
fig. 4 is a flowchart of hydrogen discharge judgment.
In the figure, 1, an exhaust hood; 2. an exhaust pipe; 3. an air inlet window; 4. a hydrogen concentration detector; 5. a control box; 6. a storage battery; 7. an exhaust port; 8. an exhaust fan; 9. a gas collection port; 10. a gas collection tube; 11. a hydrogen gas collection tank; 12. a first on-off valve; 13. a second on-off valve; 14. a display; 15. an input keyboard; 16. and an indicator light.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-4, the utility model provides a storage battery hydrogen discharging device, including exhaust hood 1, blast pipe 2, air inlet window 3, hydrogen concentration detector 4, control box 5, the inner chamber upper portion of exhaust hood 1 is the toper that diminishes gradually from bottom to top, the inner chamber lower part of exhaust hood 1 covers battery 6 completely inside, blast pipe 2 sets up in the toper top of exhaust hood 1, blast pipe 2 communicates the inner chamber and the exterior space of exhaust hood 1, the outer end department that blast pipe 2 is located exhaust hood 1 is equipped with gas vent 7, air inlet window 3 sets up in the bottom lateral wall of exhaust hood 1, hydrogen concentration detector 4 sets up in the toper top of the inner chamber of exhaust hood 1, control box 5 sets up in the outer wall of exhaust hood 1, be equipped with exhaust fan 8 on the exhaust passage of gas vent 2; the hydrogen concentration detector 4, the exhaust fan 8 and the storage battery 6 are electrically connected to the control box 5, the exhaust port 7 is connected to a ventilation and exhaust system of an external space, and the joint of the inner wall of the exhaust hood 1 is completely sealed; the hydrogen concentration detector 4, the control box 5, the exhaust fan 8 and the storage battery 6 are linked in working state, the control box 5 is used for detecting the difference value between the voltage of the storage battery 6 and the power supply voltage, and further judging whether the storage battery 6 is in a floating charging state, if the working state of the storage battery 6 is charging, especially in the floating charging state, the control box 5 is used for controlling the hydrogen concentration detector 4 to be started, and if the hydrogen concentration detector 4 detects that the hydrogen concentration exceeds a threshold value, the control box 5 is used for controlling the exhaust fan 8 to be started to perform exhaust operation; or the hydrogen concentration detector 4 is started in real time, and once the hydrogen concentration is detected to exceed the threshold value, the control box 5 controls the exhaust fan 8 to be started to perform exhaust operation; because 1 inner chamber top of exhaust hood is the toper, and hydrogen density is less than the air, consequently, exhaust hydrogen is preferred to be gathered in 1 inner chamber top of exhaust hood, when making things convenient for hydrogen concentration detector 4 to measure, ensures as long as there is some hydrogen to discharge, all can assemble in 1 inner chamber top of exhaust hood, when having ensured safety, has guaranteed measuring accuracy and foresight nature.
Furthermore, a gas collecting port 9 is further formed in the exhaust pipe 2 and located at the outer end of the exhaust hood 1, the gas collecting port 9 is connected with a gas collecting pipe 10, the other end of the gas collecting pipe 10 is connected with a hydrogen gas collecting tank 11, and the gas collecting port 9 and the exhaust port 7 are in switch interlocking; a gas collecting port 9 and an exhaust port 7 are arranged at the exhaust pipe 2, and the exhaust port 7 is used for directly discharging hydrogen into a ventilation exhaust pipeline for treatment under the condition that the ventilation exhaust pipeline exists; in the case of no ventilation exhaust duct, the hydrogen gas collection tank 11 connected through the gas collection port 9 collects hydrogen gas locally to avoid polluting the environment and causing danger.
Furthermore, a first switch valve 12 is arranged at the gas collecting port 9, a second switch valve 13 is arranged at the hydrogen gas collecting tank 11, and the first switch valve 12 and the second switch valve 13 are electrically connected to the control box 5; first ooff valve 12, second ooff valve 13 are favorable to cutting off the gas passage between gas collection mouth 9 and the hydrogen gas collection tank 11 through control box 5, prevent that the hydrogen of gas collection mouth 9 department from continuing to discharge, prevent simultaneously that the hydrogen of collecting in the hydrogen gas collection tank 11 from leaking, make things convenient for operating personnel to carry out more the gas exchange tank after 11 gas of hydrogen gas collection tank are full.
Further, a liquid crystal display 14, an input keyboard 15 and an indicator light 16 are arranged on the control box 5; the exhaust state and related alarm information can be observed in real time through the display 14, the exhaust fan 8, the first switch valve 12 and the second switch valve 13 can be manually operated through the input keyboard 15, and manual exhaust, replacement of the hydrogen gas collecting tank 11 and shutdown detection are facilitated.
Further, the indicator lights 16 include a work indicator light, a sleep indicator light, an exhaust indicator light, a gas full canister indicator light, and a fault indicator light.
Examples
The first embodiment is as follows:
in this embodiment, the gas collecting port 9 is connected to the gas discharge pipe 2. When the control box 5 detects that the difference value between the voltage of the storage battery 6 and the power supply voltage is small, and further determines that the storage battery 6 is in a floating charging state, the control box 5 controls the hydrogen concentration detector 4 to be started; or when the hydrogen concentration detector 4 is in a real-time on state. When the hydrogen concentration detector 4 detects that the hydrogen concentration at the top of the cone in the inner cavity of the exhaust hood 1 reaches a threshold value (because the hydrogen concentration is smaller than the air density, the hydrogen concentration at the top of the cone is always larger than the hydrogen concentration in other areas in the exhaust hood 1), the control box 5 starts the exhaust fan 8, and simultaneously opens the first switch valve 12 and the second switch valve 13 to communicate with a gas passage between the gas collection port 9 and the hydrogen gas collection tank 11, because the gas collection port 9 and the exhaust port 7 are in switch interlock, gas can only be introduced into the hydrogen gas collection tank 11 from the exhaust pipe 2, and therefore, the exhaust fan 8 discharges the hydrogen gas out of the exhaust hood 1 and sends the hydrogen gas into the hydrogen gas collection tank 11 for storage. When the gas in the hydrogen gas collection tank 11 is full, the gas full tank-changing indicator lamp of the indicator lamp 16 is turned on and gives a prompt and an alarm, an operator operates through the input keyboard 15 on the control box 5, the operation result is checked in real time through the liquid crystal display 14, the hydrogen gas collection tank 11 is replaced after the first switch valve 12 and the second switch valve 13 are closed, and the collected gas in the hydrogen gas collection tank 11 cannot overflow due to the fact that the first switch valve 12 and the second switch valve 13 are closed, and the hydrogen gas at the top of the cone of the inner cavity of the exhaust hood 1 also stops being discharged. After the replacement of the new empty hydrogen gas collection tank 11 is completed, the operator inputs a replacement operation completion instruction through the control box 5. The control box 5 controls the first switch valve 12 and the second switch valve 13 to open, and simultaneously, the exhaust fan 8 discharges the hydrogen out of the exhaust hood 1 again and sends the hydrogen into the hydrogen gas collecting tank 11 for storage.
When the hydrogen sensor is in the hydrogen concentration activation state, the hydrogen concentration threshold value is operated and input through the input keyboard 15, the liquid crystal display 14 checks the operation result in real time, the exhaust fan 8 is started to exhaust hydrogen and collect gas when the hydrogen concentration reaches 3%, and the accuracy of the hydrogen sensor is set to be within 0.5%. Data input and output are performed through the liquid crystal display 14 and the input keyboard 15: monitoring or inputting the working state of the storage battery 6, and entering a hydrogen discharge control system; setting a safety threshold of hydrogen concentration; displaying and outputting the real-time hydrogen concentration; and displaying the working state of the hydrogen discharging device of the storage battery.
When the storage battery is in a floating charge activation state, in order to save energy, the device is in a non-working state, namely a low-power dormant state, when the storage battery 6 is in the floating charge state, the hydrogen exhaust device is activated and started, the hydrogen concentration detector 4 is started to detect the hydrogen concentration, and when the hydrogen concentration exceeds a threshold value, the exhaust fan 8 is started to exhaust hydrogen and collect gas. Until the working state of the storage battery 6 is finished, or the floating charging is finished, that is, the hydrogen evolution is finished, the hydrogen concentration detector 4 detects the hydrogen concentration, and when the hydrogen concentration is lower than a certain preset low threshold (0.5% is selected in the embodiment), the exhaust fan 8 is turned off, and then the hydrogen concentration detector 4 is turned off.
Example two:
in this embodiment, the exhaust pipe 2 is directly connected to the exhaust port 7. The linkage of the control box 5, the hydrogen concentration detector 4 and the exhaust fan 8 is the same as that of the first embodiment. At this time, since the gas collection port 9 and the exhaust port 7 are interlocked with each other, when the exhaust port 7 is opened, the gas collection port 9 is closed, the control box 5 starts the exhaust fan 8, and the hydrogen gas is discharged out of the exhaust hood 1 through the exhaust port 7 to the ventilation exhaust system of the external space for processing. In this embodiment, the hydrogen gas collecting tank 11 does not need to be replaced by manual operation, so that the operation is more convenient and unattended, but the embodiment has higher requirements on the service environment of the storage battery, and a special ventilation and exhaust system of an external space and a tail-end hydrogen treatment system need to be laid.
To sum up, the utility model relates to a battery hydrogen discharging device through hydrogen concentration detector, control box, exhaust fan and battery operating condition linkage, judges and detects battery exhaust hydrogen, in case detect hydrogen concentration and exceed the threshold value, then control box control exhaust fan starts, exhausts the operation, has ensured the security that the battery used, consequently the utility model discloses possess extensive application prospect.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the present invention.
Claims (5)
1. The storage battery hydrogen exhaust device is characterized by comprising an exhaust hood (1), an exhaust pipe (2), an air inlet window (3), a hydrogen concentration detector (4) and a control box (5), wherein the upper part of an inner cavity of the exhaust hood (1) is in a conical shape which is gradually reduced from bottom to top, the lower part of the inner cavity of the exhaust hood (1) completely covers a storage battery (6), the exhaust pipe (2) is arranged at the conical top of the exhaust hood (1), the exhaust pipe (2) is communicated with the inner cavity and the external space of the exhaust hood (1), an air outlet (7) is formed in the outer end of the exhaust hood (1) of the exhaust pipe (2), the air inlet window (3) is arranged on the side wall of the bottom of the exhaust hood (1), the hydrogen concentration detector (4) is arranged at the conical top of the inner cavity of the exhaust hood (1), and the control box (5) is arranged on the outer wall of the exhaust hood (1), an exhaust fan (8) is arranged on an exhaust channel of the exhaust port (7);
the hydrogen concentration detector (4), the exhaust fan (8) and the storage battery (6) are electrically connected to the control box (5), the exhaust port (7) is connected to a ventilation and exhaust system of an external space, and joints of the inner wall of the exhaust hood (1) are sealed completely.
2. The hydrogen discharge device for the storage battery according to claim 1, wherein the exhaust pipe (2) is further provided with a gas collection port (9) at the outer end of the exhaust hood (1), the gas collection port (9) is connected with a gas collection pipe (10), the other end of the gas collection pipe (10) is connected with a hydrogen gas collection tank (11), and the gas collection port (9) and the exhaust port (7) are in switch interlocking.
3. The hydrogen discharge device for the storage battery is characterized in that a first switch valve (12) is arranged at the gas collecting port (9), a second switch valve (13) is arranged at the hydrogen gas collecting tank (11), and the first switch valve (12) and the second switch valve (13) are electrically connected to the control box (5).
4. The hydrogen discharge device for the storage battery according to claim 1, wherein the control box (5) is provided with a liquid crystal display (14), an input keyboard (15) and an indicator light (16).
5. The hydrogen discharge device for the storage battery as claimed in claim 4, wherein the indicator lamp (16) comprises an operation indicator lamp, a sleep indicator lamp, a gas discharge indicator lamp, a gas full tank indicator lamp and a fault indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121020589.3U CN214477787U (en) | 2021-05-13 | 2021-05-13 | Hydrogen discharging device for storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121020589.3U CN214477787U (en) | 2021-05-13 | 2021-05-13 | Hydrogen discharging device for storage battery |
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| CN214477787U true CN214477787U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499753A (en) * | 2023-04-04 | 2023-07-28 | 襄阳达安汽车检测中心有限公司 | A hydrogen fuel cell engine environment simulation test system |
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2021
- 2021-05-13 CN CN202121020589.3U patent/CN214477787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499753A (en) * | 2023-04-04 | 2023-07-28 | 襄阳达安汽车检测中心有限公司 | A hydrogen fuel cell engine environment simulation test system |
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