CN210576242U - Connection structure for detecting graphite bipolar plate of fuel cell - Google Patents
Connection structure for detecting graphite bipolar plate of fuel cell Download PDFInfo
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- CN210576242U CN210576242U CN201921405683.3U CN201921405683U CN210576242U CN 210576242 U CN210576242 U CN 210576242U CN 201921405683 U CN201921405683 U CN 201921405683U CN 210576242 U CN210576242 U CN 210576242U
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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
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Abstract
The utility model relates to the technical field of fuel cells, and discloses a connecting structure for detecting a graphite bipolar plate of a fuel cell, because an elastic conducting strip is placed between a first groove and a second groove in a compressed state, after entering the first groove and the second groove, the elastic force of the elastic piece stretches and resets, and then the elastic piece can be firmly abutted in the first groove and the second groove, and the elastic conducting strip is prevented from falling off from the space between the first groove and the second groove by the blocking of the convex block, thereby avoiding the poor contact of the elastic conducting strip caused by vibration, ensuring the stability of the collected voltage data, compared with the surface contact type voltage collecting mode, the device has the advantages of simple structure, easy installation, low cost, reliability and stability in the use process, can achieve the purpose of effectively monitoring the voltage, and can be installed on the galvanic pile to cover the whole service life cycle of the galvanic pile.
Description
Technical Field
The utility model relates to a fuel cell's technical field especially relates to a connection structure that is used for fuel cell graphite bipolar plate to detect.
Background
A fuel cell is generally assembled by stacking several tens or hundreds of bipolar plates and an MEA (Membrane electrode assembly). One MEA is clamped between two bipolar plates to form a single cell, dozens of hundreds of single cells are connected in series to form a cell stack, and the summation of the voltages of the single cells is the total voltage of the whole cell stack. Therefore, the performance, safety and service life of the whole electric pile are affected by the performance of the single battery, so that the voltage of the single battery is very necessary to detect, the state of the battery can be monitored in real time in the use process of the battery, and the battery which has a problem can be clearly known in fault maintenance.
The detection mode of current graphite bipolar plate pile is through connecting the mode of patrolling and examining the collection signal, and it surveys and examines the collection signal detection and gather voltage for surface contact, and its equipment is comparatively complicated usually, and the contact is not good, and it is unstable to appear collecting voltage data easily, and moreover, the car can appear frequently shaking in the in-process of traveling and influence the contact, so this kind of method generally only limits in the test procedure of pile, can not cover the whole life cycle of using of pile, has very big limitation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: because current collection signal detection of patrolling and examining is surface contact collection voltage, receive the vibrations influence easily and lead to contact bad influence voltage data of gathering.
In order to solve the technical problem, the utility model provides a connection structure for fuel cell graphite bipolar plate detects, including graphite bipolar plate and elastic conducting strip, graphite bipolar plate includes relative oxygen board and the hydrogen board that sets up, be equipped with first recess on the oxygen board, be equipped with the second recess on the hydrogen board, first recess with the second recess sets up relatively, the second recess is close to notch department and is equipped with the lug, elastic conducting strip's first end is used for and patrols and examines detection module and is connected, elastic conducting strip's second end extend to first recess with between the second recess and have with first recess with first butt portion and second butt portion of second recess butt respectively with the oxygen board with the hydrogen board switches on, just the tip butt of the second end of elastic conducting strip in on the lug.
Further preferably, a guide inclined plane is arranged on the protruding block, and the guide inclined plane is arranged on the outer side of the protruding block and is opposite to the first groove.
Further preferably, the elastic conductive sheet includes a first conductive segment, a second conductive segment, and a conductive connecting segment connected between the first conductive segment and the second conductive segment, the first abutting portion is located on the first conductive segment, and the second abutting portion is located on the second conductive segment;
the first conductive section and the second conductive section are arranged in parallel, an included angle theta 1 is formed between the conductive connecting section and the first conductive section, and the theta 1 is 0-90 degrees.
Further preferably, θ 1 is 45 °.
Further preferably, the distance between the end face of the bump and the first groove is D1, the thickness of the elastic conductive sheet is H, and D1 > 2H.
Further preferably, the distance between the end face of the projection relative to the second groove is D2, D2 > H.
Further preferably, the projection distance of the second conductive segment and the conductive connecting segment on the first conductive segment is D3, the groove width of the second groove is D4, and D3 < D4.
Further preferably, the first conductive segment comprises a connecting segment and a contact segment, the connecting segment is used for being welded with a signal acquisition line of the inspection detection module, and the first abutting portion is arranged on the contact segment.
Further preferably, an insulating coating layer is arranged at the welding position of the connecting section and the signal acquisition line.
The utility model provides a connection structure for fuel cell graphite bipolar plate detects, compare with prior art, its beneficial effect lies in:
the oxygen plate of the graphite bipolar plate is provided with a first groove, the hydrogen plate is provided with a second groove, the elastic conducting strip is compressed to be elastically deformed to reduce the volume and then is inserted between the first groove and the second groove due to elasticity, the elastic conducting strip restores the original shape between the first groove and the second groove, the first abutting part abuts against the first groove under the action of the elasticity, the second abutting part abuts against the second groove to conduct the oxygen plate and the hydrogen plate through the elastic conducting strip, the first end of the elastic conducting strip is connected with the inspection detection module, the second end of the elastic conducting strip abuts against the lug and is respectively connected with the elastic conducting strips of two adjacent graphite bipolar plates through the inspection detection module to detect the voltage value between the two adjacent graphite bipolar plates, the voltage value is the voltage value of the single-chip battery, and the elastic conducting strip is placed between the first groove and the second groove in a compressed state, after entering into first recess and second recess because the elasticity effect of self can stabilize the butt in first recess and second recess after the stretching resets, and block through the lug and avoid elastic conducting plate to drop from between first recess and the second recess, thereby avoid elastic conducting plate to produce the condition of contact failure because of vibrations, guarantee the stability of the voltage data who gathers, compare in the mode of surface contact collection voltage, its simple structure, easy installation, low cost, reliable and stable in the use, can reach the purpose of effective monitoring voltage, and can install on the pile, cover the whole life cycle of using of pile.
Drawings
Fig. 1 is a schematic diagram of a detection structure of a fuel cell stack according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a graphite bipolar plate in an embodiment of the present invention;
fig. 3 is a schematic side view of an elastic conductive sheet according to an embodiment of the present invention;
fig. 4 is a schematic top view of an elastic conductive sheet according to an embodiment of the present invention;
fig. 5 is a schematic view of a connection structure between a graphite bipolar plate and an elastic conductive sheet according to an embodiment of the present invention.
In the figure, 1, a graphite bipolar plate; 2. an elastic conductive sheet; 3. a routing inspection detection module; 4. a stack end plate; 5. an MEA; 11. an oxygen plate; 12. a hydrogen plate; 111. a first groove; 121. a second groove; 122. a bump; 123. a guide slope; 21. a first conductive segment; 22. a second conductive segment; 23. a conductive connection section; 31. and a signal acquisition line.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
With reference to fig. 1 to 5, the utility model provides a connection structure for fuel cell graphite bipolar plate detects of preferred embodiment, including graphite bipolar plate 1 and elastic conductive sheet 2, graphite bipolar plate 1 is including relative oxygen board 11 and the hydrogen board 12 that sets up, be equipped with first recess 111 on the oxygen board 11, be equipped with second recess 121 on the hydrogen board 12, first recess 111 sets up with second recess 121 relatively, second recess 121 is close to notch department and is equipped with lug 122, the first end of elastic conductive sheet 2 is used for being connected with inspection detection module 3, inspection detection module 3 is used for measuring the voltage between each graphite bipolar plate 1, inspection detection module 3 has signal acquisition line 31, signal acquisition line 31 is used for with elastic conductive sheet 2 intercommunication in order to gather the voltage signal between two adjacent graphite bipolar plate 1, the second end of elastic conductive sheet 2 extends to between first recess 111 and the second recess 121 and has the first butt portion with first recess 111 and second recess 121 butt respectively And a second abutting portion for electrically connecting the oxygen plate 11 and the hydrogen plate 12, and an end portion of the second end of the elastic conductive sheet 2 abuts on the bump 122.
Specifically, a first groove 111 is arranged on an oxygen plate 11 of a graphite bipolar plate 1, a second groove 121 is arranged on a hydrogen plate 12, the elastic conductive sheet 2 is compressed to be elastically deformed to be inserted between the first groove 111 and the second groove 121 after the volume is reduced due to elasticity of the elastic conductive sheet 2, the elastic conductive sheet 2 restores the original shape between the first groove 111 and the second groove 121 due to the release of pressure, and under the action of elasticity, a first abutting part abuts against the first groove 111, a second abutting part abuts against the second groove 121 to conduct the oxygen plate 11 and the hydrogen plate 12 through the elastic conductive sheet 2, a first end of the elastic conductive sheet 2 is connected with an inspection detection module 3, and an end part of a second end abuts against a bump 122 to prevent the elastic conductive sheet 2 from falling off between the first groove 111 and the second groove 121, because the fuel cell stack comprises a plurality of graphite bipolar plates 1, the inspection detection module 3 is respectively connected with the elastic conductive sheets 2 of two adjacent graphite bipolar plates 1 to detect the voltage value between the two adjacent graphite bipolar plates 1, the voltage value is the voltage value of the single-chip battery, because the elastic conductive sheets 2 are placed between the first groove 111 and the second groove 121 in a compressed state, after entering the first groove 111 and the second groove 121, the elastic conductive sheets can be stably abutted in the first groove 111 and the second groove 121 after being unfolded and reset due to the self elastic force, generally, the first abutting part and the second abutting part of the elastic conductive sheets 2 are in interference fit with the space between the first groove 111 and the second groove 121, the effect that the elastic conductive sheets 2 are in close contact with the first groove 111 and the second groove 121 is achieved, the elastic conductive sheets 2 can be in good contact with the oxygen plate 11 and the hydrogen plate 12 of the graphite bipolar plates 1 by utilizing the elastic force, thereby avoiding the situation that the elastic conductive sheets 2 are in poor contact due to the vibration, the stability of the voltage data of guaranteeing the collection compares in the mode of surface contact collection voltage, and its simple structure installs easily, and low cost is reliable stable in the use, can reach the purpose of effective monitoring voltage, and can install on the pile, covers the whole life cycle of using of pile.
Further, a guiding inclined plane 123 is provided on the bump 122, and the guiding inclined plane 123 is provided at the outer side of the bump 122 and opposite to the first groove 111, so as to facilitate the insertion of the elastic conductive sheet 2.
In this embodiment, the material of the elastic conductive sheet 2 should have good electrical conductivity and good elasticity, and may be one of copper, nickel, alloy material or surface plating material, and the material at least satisfies the following conditions: the elastic modulus E is more than or equal to 71Gpa, and the yield strength sigma s is more than or equal to 27 MPa. Further, the elastic conducting strip 2 is of a U-like structure, the elastic conducting strip 2 includes a first conducting segment 21, a second conducting segment 22 and a conducting connecting segment 23 connected between the first conducting segment 21 and the second conducting segment 22, the first abutting portion is located on the first conducting segment 21, the second abutting portion is located on the second conducting segment 22, the conducting connecting segment 23 is located in a space between the first groove 111 and the second groove 121, so that the first abutting portion and the second abutting portion can be firmly abutted against the first groove 111 and the second groove 121 after the elastic conducting strip 2 is unfolded under the action of elastic force, the first conducting segment 21 and the second conducting segment 22 are arranged in parallel, an included angle θ 1 is formed between the conducting connecting segment 23 and the first conducting segment 21, θ 1 is 0 to 90 °, preferably θ 1 is 45 °, in order to ensure good unfolding performance of the elastic conducting strip 2, generally, since an end of the first conducting segment 21 is used for being connected with the inspection module 3, the length L1 of the first conductive segment 21 is set to be greater than the length L2 of the second conductive segment 22 so that the first conductive segment 21 can be connected to the inspection module 3 and the second conductive segment 22 can fit into the second groove 121.
Further, setting the distance between the end surface of the bump 122 and the first groove 111 as D1, the thickness of the elastic conductive sheet 2 as H, preferably D1 > 2H, generally H ≥ 0.1mm, folding and compressing the second conductive segment 22 of the elastic conductive sheet 2 toward the first conductive segment 21, the overall thickness of which is close to 2H, so as to reduce the overall volume of the elastic conductive sheet 2 to place the elastic conductive sheet 2 between the first groove 111 and the second groove 121, setting D1 > 2H to ensure that the compressed elastic conductive sheet 2 can smoothly pass through the space between the first groove 111 and the bump 122, generally, setting the distance between the first groove 111 and the second groove 121 as L3, the distance between the first conductive segment 21 and the second conductive segment 22 as L4, and the size of L4 and L3 meet the standard of interference fit, meanwhile, the widths of the first groove 111 and the second groove 121 should be greater than the width L5 of the elastic conductive sheet 2, and in order to ensure that the end of the first conductive segment 21 can be connected to the inspection module 3, the length of the first groove 111 is set to L6, and L1 is greater than L6, and for the graphite bipolar plate 1, the thickness h1 of the oxygen plate 11 and the thickness h2 of the hydrogen plate 12 are both set to be not less than 0.5mm in consideration of the processing technology and strength requirements.
Further, the distance between the end surface of the bump 122 and the second groove 121 is D2, and D2 is greater than H, so that the second end of the elastic conductive sheet 2 can be firmly abutted to the bump 122, and the elastic conductive sheet 2 is prevented from falling off from between the first groove 111 and the second groove 121. Further, the projection distance of the second conductive segment 22 and the conductive connecting segment 23 on the first conductive segment 21 is D3, the slot width of the second slot 121 is D4, D3 < D4, which ensures that the second conductive segment 22 can be completely placed in the second slot 121 and can be brought into close contact with the second slot 121 under the action of the elastic force.
In this embodiment, in order to avoid poor contact between the elastic conductive sheet 2 and the first and second grooves 111 and 121, no residual glue or other insulating substances may be present between the first abutting portion of the elastic conductive sheet 2 and the contact surface of the first groove 111 and between the second abutting portion and the contact surface of the second groove 121.
The inspection detection module 3 comprises a signal acquisition line 31, the first conductive section 21 comprises a connecting section and a contact section, the connecting section is welded with the signal acquisition line 31, the first abutting part is arranged on the contact section, and preferably, an insulating coating layer is arranged at the welding position of the connecting section and the signal acquisition line 31, so that short circuit caused by contact between the welding position and an adjacent bipolar plate is avoided.
In this implementation, the fuel cell stack includes the stack end plate 4 at both ends and locates a plurality of graphite bipolar plate 1 between two stack end plates 4, keep apart through MEA5 (membrane electrode) between two adjacent graphite bipolar plate 1, it includes a plurality of signal acquisition lines 31 to patrol and examine detection module 3, each signal acquisition line 31 all welds with the elastic conduction piece 2 in a graphite bipolar plate 1, the voltage value between two adjacent graphite bipolar plate 1 is the voltage value of this graphite bipolar plate 1 single-chip battery promptly.
The utility model discloses a detection method of fuel cell graphite bipolar plate 1 specifically is including following step:
compression: the second conductive segment 22 of the elastic conductive sheet 2 is folded and compressed towards the first conductive segment 21, so that the relative volume between the second conductive segment 22 and the first conductive segment 21 is reduced, and the first conductive segment 21 and the second conductive segment 22 can be smoothly placed into the first groove 111 and the second groove 121;
placing: respectively placing the compressed elastic conducting strips 2 into the space between the first groove 111 and the second groove 121 of each corresponding graphite bipolar plate 1, wherein the elastic conducting strips 2 stretch under the action of the elasticity of the elastic conducting strips, so that the end parts of the second conducting sections 22 are enabled to be abutted against the bumps 122, the first abutting parts are enabled to be abutted against the first grooves 111, and the second abutting parts are abutted against the second grooves 121, so that the oxygen plate 11 and the hydrogen plate 12 are conducted through the elastic conducting strips 2;
connecting: the end of each first conductive segment 21 is welded to each signal acquisition line 31 of the inspection detection module 3, and the welded joint is covered with an insulating layer, so as to avoid short circuit caused by contact between the welded joint and the adjacent graphite bipolar plate 1, it should be noted that, in this embodiment, the elastic conductive sheet 2 may be welded to the signal acquisition line 31 and then placed into the first groove 111 and the second groove 121, and the sequence of the operation is not limited in this embodiment;
and (3) detection: the inspection detection module 3 is started, the inspection detection module 3 displays the voltage value between the graphite bipolar plates 1, and the inspection detection module 3 detects the voltage value between two adjacent graphite bipolar plates 1.
In summary, the present invention provides a connection structure for detecting a graphite bipolar plate 1 of a fuel cell, wherein a first groove 111 is disposed on an oxygen plate 11 of the graphite bipolar plate 1, a second groove 121 is disposed on a hydrogen plate 12, an elastic conductive sheet 2 is compressed to elastically deform and insert the elastic conductive sheet between the first groove 111 and the second groove 121 after the volume is reduced due to its elasticity, the elastic conductive sheet 2 recovers its original shape between the first groove 111 and the second groove 121 due to the pressure being released, and the first abutting portion abuts against the first groove 111 under the action of the elasticity, the second abutting portion abuts against the second groove 121 to conduct the oxygen plate 11 and the hydrogen plate 12 through the elastic conductive sheet 2, the first end of the elastic conductive sheet 2 is connected with an inspection module 3, the second end abuts against a bump 122, the inspection module 3 detects a voltage value between two adjacent graphite bipolar plates 1, the voltage value is the voltage value of the single-chip battery of the graphite bipolar plate 1, because the elastic conducting plate 2 is placed between the first groove 111 and the second groove 121 in a compressed state, after entering the first groove 111 and the second groove 121, the elastic conducting plate can be firmly abutted in the first groove 111 and the second groove 121 after being unfolded and reset due to the elastic action of the elastic conducting plate, and the bump 122 blocks the elastic conducting plate 2 to avoid the elastic conducting plate 2 from falling off between the first groove 111 and the second groove 121, thereby avoiding the situation that the elastic conducting plate 2 is in poor contact due to vibration, ensuring the stability of the collected voltage data.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a connection structure for fuel cell graphite bipolar plate detects, a serial communication port, including graphite bipolar plate and elastic conducting strip, graphite bipolar plate is including relative oxygen board and the hydrogen board that sets up, be equipped with first recess on the oxygen board, be equipped with the second recess on the hydrogen board, first recess with the second recess sets up relatively, the second recess is close to notch department and is equipped with the lug, elastic conducting strip's first end is used for and patrols and examines detection module and is connected, elastic conducting strip's second end extend to first recess with between the second recess and have with first recess with the first butt portion and the second butt portion of second recess butt respectively with will oxygen board with the hydrogen board switches on, just the tip butt of elastic conducting strip's second end in on the lug.
2. The bonding structure for testing a graphite bipolar plate for a fuel cell according to claim 1, wherein the projection is provided with a guide slope, and the guide slope is disposed outside the projection and opposite to the first groove.
3. The connecting structure for fuel cell graphite bipolar plate inspection according to claim 1, wherein the resilient conductive sheet comprises a first conductive segment, a second conductive segment, and a conductive connecting segment connected between the first conductive segment and the second conductive segment, the first abutting portion is located on the first conductive segment, and the second abutting portion is located on the second conductive segment;
the first conductive section and the second conductive section are arranged in parallel, an included angle theta 1 is formed between the conductive connecting section and the first conductive section, and the theta 1 is 0-90 degrees.
4. The bonding structure for fuel cell graphite bipolar plate inspection according to claim 3, wherein θ 1 is 45 °.
5. The joining structure for fuel cell graphite bipolar plate inspection according to claim 3, wherein the distance between the end face of the projection and the first groove is D1, the thickness of the electrically conductive resilient sheet is H, and D1 > 2H.
6. The bonding structure for fuel cell graphite bipolar plate inspection according to claim 5, wherein a distance between an end face of the bump with respect to the second groove is D2, D2 > H.
7. The bonding structure for testing a graphite bipolar plate for a fuel cell according to claim 3, wherein the projection distance of the second conductive segment and the conductive bonding segment on the first conductive segment is D3, the groove width of the second groove is D4, and D3 < D4.
8. The connection structure for detecting the graphite bipolar plate of the fuel cell as claimed in claim 3, wherein the first conductive section comprises a connection section and a contact section, the connection section is used for being welded with a signal acquisition line of an inspection detection module, and the first abutting part is arranged on the contact section.
9. The joint structure for testing a graphite bipolar plate for a fuel cell according to claim 8, wherein an insulating coating layer is provided at the welding position of the joint section and the signal acquisition line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405683.3U CN210576242U (en) | 2019-08-27 | 2019-08-27 | Connection structure for detecting graphite bipolar plate of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405683.3U CN210576242U (en) | 2019-08-27 | 2019-08-27 | Connection structure for detecting graphite bipolar plate of fuel cell |
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| CN210576242U true CN210576242U (en) | 2020-05-19 |
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| CN201921405683.3U Active CN210576242U (en) | 2019-08-27 | 2019-08-27 | Connection structure for detecting graphite bipolar plate of fuel cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474074A (en) * | 2019-08-27 | 2019-11-19 | 广东国鸿氢能科技有限公司 | Connection structure and detection method for graphite bipolar plate of fuel battery detection |
| CN113013451A (en) * | 2021-03-04 | 2021-06-22 | 上海捷氢科技有限公司 | Plug connector for detecting single voltage of fuel cell and mounting structure thereof |
| CN113793945A (en) * | 2021-08-30 | 2021-12-14 | 深圳深科鹏沃科技有限公司 | Bipolar plate mechanism and fuel cell system |
-
2019
- 2019-08-27 CN CN201921405683.3U patent/CN210576242U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474074A (en) * | 2019-08-27 | 2019-11-19 | 广东国鸿氢能科技有限公司 | Connection structure and detection method for graphite bipolar plate of fuel battery detection |
| CN110474074B (en) * | 2019-08-27 | 2024-07-09 | 国鸿氢能科技(嘉兴)股份有限公司 | Connection structure and detection method for detecting graphite bipolar plate of fuel cell |
| CN113013451A (en) * | 2021-03-04 | 2021-06-22 | 上海捷氢科技有限公司 | Plug connector for detecting single voltage of fuel cell and mounting structure thereof |
| CN113793945A (en) * | 2021-08-30 | 2021-12-14 | 深圳深科鹏沃科技有限公司 | Bipolar plate mechanism and fuel cell system |
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Address after: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee after: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. Address before: No.9, Nanyuan District, Foshan (Yunfu) industrial transfer industrial park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Patentee before: GUANGDONG SINOSYNERGY HYDROGEN POWER TECHNOLOGY Co.,Ltd. |
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Address after: 314000 Room 501-2, Building 37, Hangzhou Bay New Economic Park, Port District, Jiaxing City, Zhejiang Province Patentee after: Guohong Hydrogen Energy Technology (Jiaxing) Co.,Ltd. Address before: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee before: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. |
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