CN113260193A - Power converter structure for new energy automobile and production process thereof - Google Patents
Power converter structure for new energy automobile and production process thereof Download PDFInfo
- Publication number
- CN113260193A CN113260193A CN202110532829.6A CN202110532829A CN113260193A CN 113260193 A CN113260193 A CN 113260193A CN 202110532829 A CN202110532829 A CN 202110532829A CN 113260193 A CN113260193 A CN 113260193A
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- shell
- power converter
- new energy
- energy automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 108
- 238000007789 sealing Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 239000000428 dust Substances 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures
Abstract
The invention discloses a power converter structure for a new energy automobile, and aims to provide a power converter structure for a new energy automobile with good heat dissipation performance and a production process thereof. The shell is provided with a foam board at the bottom, a power converter assembly is connected in the shell, the power converter assembly is arranged above the foam board, heat dissipation board assemblies are arranged on two outer side faces of the shell, the bottom face of the shell is provided with the heat dissipation assemblies, the end face of the shell is provided with a connecting plug, and the connecting plug is connected with the power converter assembly. The invention has the beneficial effects that: the radiating plate assembly arranged on the outer side surface of the shell and the radiating assembly arranged on the bottom surface of the shell can respectively radiate the side surface and the bottom surface of the shell, so that the radiating efficiency is improved; the heat dissipation assembly is provided with a heat dissipation fan, and the heat dissipation fan is driven to rotate through the airflow change in the driving process of the automobile, so that the heat dissipation efficiency is improved; and the components are integrated, so that the cost is reduced.
Description
Technical Field
The invention relates to the technical field of power converters, in particular to a power converter structure for a new energy automobile and a production process thereof.
Background
The power converter for the new energy vehicle is a vehicle-mounted DC-DC converter. The vehicle-mounted DC-DC converter is particularly a high-voltage to low-voltage converter widely used in the field of new energy vehicles, converts a power battery nominal output (generally about 300V) direct-current voltage configured in an electric vehicle into a variable direct-current voltage, and is widely applied to a secondary power module of a motor direct-drive or auxiliary-drive vehicle (including an electric vehicle EV or a hybrid electric vehicle HEV). Generally, the existing vehicle-mounted DC-DC converter includes a heat dissipation device, which mostly dissipates heat in a single surface, and has poor heat dissipation effect and insufficient heat dissipation area, which often fails to meet the heat dissipation requirement of the converter.
Disclosure of Invention
The invention provides a power converter structure for a new energy automobile with good heat dissipation performance and a production process thereof, aiming at overcoming the defect of poor heat dissipation performance in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a power converter structure for new energy automobile, includes the shell, the shell bottom is provided with the cotton board of bubble, the shell in-connection has the power converter subassembly, the cotton board top of bubble is arranged in to the power converter subassembly, two lateral surfaces of shell are provided with radiator block assembly, the shell bottom surface is provided with radiator block, the shell terminal surface is provided with connecting plug, connecting plug is connected with the power conversion subassembly.
The power converter assembly is arranged in the shell, the bottom surface of the power converter assembly is in contact with a foam board arranged at the bottom of the shell, and the foam board provides a buffering effect. The heat dissipation plate assembly arranged on the outer side face of the shell and the heat dissipation assembly arranged on the bottom face of the shell can respectively dissipate heat of the side face and the bottom face of the shell, so that the heat dissipation efficiency is improved, and the normal work of the power converter is ensured.
Preferably, the housing comprises a housing body and a housing cover, the housing body is a rectangular box body with an opening at the upper end, and the housing cover is connected with the opening end of the housing body. The shell is the design of uncapping, and the cap passes through bolted connection with the casing, guarantees to connect the fastening.
Preferably, the bottom surface of the shell cover is provided with a yielding groove, the side wall of the yielding groove is connected with a sealing strip, and the bottom surface of the sealing strip is in contact with the end face of the opening of the shell. The sealing strip sets up on the cap, guarantees the leakproofness when cap and casing are connected, prevents that the dust from getting into the shell in, influencing power converter subassembly normal work.
Preferably, the radiating plate assembly comprises a plurality of radiating plates perpendicular to the shell, the radiating plates are connected with radiating connecting plates in a penetrating mode, and radiating glue is arranged between the radiating connecting plates and the shell. The heat dissipation plate and the heat dissipation connecting plate are connected to form a grid shape, so that the heat dissipation area is increased, and the heat dissipation efficiency is improved; heat dissipation glue is filled between the heat dissipation connecting plate and the shell, so that the heat conduction efficiency is increased, and the heat dissipation efficiency is improved.
Preferably, the heat dissipation plate is provided with a first heat dissipation hole, the first heat dissipation hole penetrates through the upper end face and the lower end face of the heat dissipation plate, the heat dissipation connecting plate is provided with a second heat dissipation hole, and the second heat dissipation hole penetrates through two ends of the heat dissipation connecting plate. The first heat dissipation hole and the second heat dissipation hole can increase air flow, and heat dissipation efficiency of the heat dissipation plate and the heat dissipation connecting plate is improved.
Preferably, the heat dissipation assembly comprises a plurality of heat dissipation fins vertically connected with the bottom surface of the shell, the heat dissipation fins are evenly arranged, the heat dissipation fins are provided with yielding holes, the bottom surface of the shell is provided with a heat dissipation fan, and the heat dissipation fan is arranged in the yielding holes. The radiating fins have a radiating effect on the bottom surface of the shell; the outline of the abdicating hole is larger than the outline of the cooling fan, so that the installation and the normal rotation of the cooling fan are ensured; the heat radiation fan can rotate by the air flow when the automobile runs, and the heat radiation is carried out on the bottom surface of the shell.
Preferably, the cooling fan comprises a fan blade wheel and a connecting seat, the connecting seat is connected with the bottom surface of the shell, the connecting seat is provided with a mounting hole, the mounting hole is a stepped hole, the end part of the fan blade wheel is connected with a connecting rod, the end part of the connecting rod is provided with a convex block, the connecting rod is sleeved with the mounting hole, and the convex block is in contact with the inner wall of the mounting hole. The mounting hole is the shoulder hole, and the aperture that is close to the casing bottom surface is greater than the aperture of keeping away from the casing bottom surface, and the connecting rod cup joints with the mounting hole, and lug and mounting hole joint prevent that fan wheel from droing, guarantee radiator fan's function normal.
Preferably, the power conversion assembly comprises a transformer and a power board, and the transformer is integrated with the power board. The product cost is reduced, and the assembly process is improved.
Preferably, the power board adopts thick copper PCB technology. The number of the general busbars is reduced, and the manufacturing cost is reduced.
A production process of a power converter for a new energy automobile comprises the following steps:
1) pre-processing: programming a power board program, and cleaning a radiating board assembly and a radiating assembly; and cleaning the radiating plate assembly and the radiating assembly by adopting automatic plasma and removing dust by adopting an automatic dust collector.
2) Assembling: the power converter assembly is assembled with the shell, the power converter assembly is connected with the plug, and the shell cover is tightly connected with the shell; the power converter assembly is connected with the bottom surface of the shell through a bolt; a foam board is filled between the power converter assembly and the bottom surface of the shell to play a role in buffering; the connecting part of the shell cover and the shell is provided with a sealing strip to prevent dust from entering and influencing the normal work of the power board, the shell cover is connected with the shell through bolts, and the shell cover is installed by using an electric torsion screw tool according to the requirement of torsion force; the plug is connected with the power converter component by a flat cable.
3) Testing and packaging: and performing functionality test on the functional converter, and packaging a finished product. And testing the heat dissipation function of the assembled finished product to ensure that the design requirement is met.
The invention has the beneficial effects that: the radiating plate assembly arranged on the outer side surface of the shell and the radiating assembly arranged on the bottom surface of the shell can respectively radiate the side surface and the bottom surface of the shell, so that the radiating efficiency is improved; the heat dissipation assembly is provided with a heat dissipation fan, and the heat dissipation fan is driven to rotate through the airflow change in the driving process of the automobile, so that the heat dissipation efficiency is improved; and the components are integrated, so that the cost is reduced.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a second perspective view of the present invention;
FIG. 4 is a sectional view taken along line A-A of the present invention;
fig. 5 is an enlarged view at B in fig. 4.
In the drawings, there is shown in the drawings,
1. the heat dissipation structure comprises a shell, 2 foam cotton, 3 power conversion components, 4 heat dissipation plate components, 5 heat dissipation components, 6 connecting plugs, 10 shells, 11 shell covers, 30 transformers, 31 power plates, 40 heat dissipation plates, 41 heat dissipation connecting plates, 42 heat dissipation glue, 50 heat dissipation plates, 51 yielding holes, 52 heat dissipation fans, 110 yielding grooves, 111 sealing strips, 400 heat dissipation holes I, 410 heat dissipation holes II, 520 fan impellers, 521 connecting seats, 522 mounting holes, 523 connecting rods and 524 bumps.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 3 and 4, the housing 1 includes a case 10 and a case cover 11. The case 10 is shaped as a rectangular box with an open upper end. The cover 11 is connected to the open end of the housing 10. The bottom surface of the housing cover 11 is provided with a yielding groove 110. The side wall of the abdicating groove 110 is connected with a sealing strip 111. The bottom surface of the weather strip 111 is in contact with the open end surface of the housing 10.
As shown in fig. 2, 3 and 4, the heat sink plate assembly 4 includes a plurality of heat sink plates 40 disposed perpendicular to the housing 10. The heat dissipating plate 40 is connected with a heat dissipating connecting plate 41. A heat dissipation glue 42 is disposed between the heat dissipation connecting plate 41 and the housing 10. The heat dissipation plate 40 is provided with a heat dissipation hole one 400. The first heat dissipation hole 400 penetrates the upper and lower end faces of the heat dissipation plate 40. The heat dissipating connecting plate 41 is provided with a second heat dissipating hole 410. The second heat dissipation hole 410 penetrates through two ends of the heat dissipation connection board 41.
As shown in fig. 4 and 5, the heat sink assembly 5 includes a plurality of heat sinks 50 vertically connected to the bottom surface of the housing 10, and the plurality of heat sinks 50 are uniformly arranged. The heat sink 50 is provided with a relief hole 51. The bottom surface of the case 10 is provided with a heat radiating fan 52. The heat dissipation fan 52 is disposed in the relief hole 51. The heat radiating fan 52 includes a fan wheel 520 and a coupling base 521. The coupling seat 521 is coupled to the bottom surface of the housing 10. The coupling base 521 is provided with a mounting hole 522. The mounting hole 522 is a stepped hole. The fan wheel 520 is connected with a connecting rod 523 at the end. The link 523 has a projection 524 at an end thereof. The link 523 is sleeved with the mounting hole 522. The projection 524 contacts the inner wall of the mounting hole 522.
As shown in fig. 4, the power conversion assembly 3 includes a transformer 30 and a power board 31. The transformer 30 is integrated with the power board 31. The power board 31 employs thick copper PCB technology.
A production process of a power converter for a new energy automobile comprises the following steps:
1) pre-processing: programming a power board 31, and cleaning the heat dissipation plate assembly 4 and the heat dissipation assembly 5; the degree is burned onto the power board 31 to ensure the normal use of the function; the heat dissipation plate assembly 4 and the heat dissipation assembly 5 are cleaned by using automatic plasma equipment, dust is removed by using an automatic dust collection device, and the follow-up assembly environment is guaranteed to meet the assembly requirement.
2) Assembling: the power converter component 3 is assembled with the shell 10, the functional converter component 3 is connected with the connecting plug 6, and the shell cover 11 is tightly connected with the shell 10; the power converter assembly 3 is connected with the bottom surface of the shell 10 through bolts; a foam board 2 is filled between the power converter component 3 and the bottom surface of the shell 10 to play a role in buffering; the sealing strip 111 is arranged at the joint of the shell cover 11 and the shell 10 to prevent dust from entering and influencing the normal work of the power board 31, the shell cover 11 is connected with the shell 10 through bolts, and the shell cover is installed by using an electric torsion screw tool according to the requirement of torsion force; the plug 6 is connected with the power converter assembly 3 by a flat cable.
3) Testing and packaging: and performing functionality test on the functional converter, and packaging a finished product. And testing the heat dissipation function of the assembled finished product to ensure that the design requirement is met.
The working principle of the invention is as follows: as shown in fig. 1-5, the transformer 30 is integrated with the power board 31, saving cost. The power board 31 and the transformer 30 are arranged in the shell 1 and connected through bolts, and the foam board 2 is arranged between the bottom surface of the power board 31 and the inner bottom surface of the shell 10 to play a role in buffering. The heat dissipation plate assembly 4 is arranged outside the shell 1, and the heat dissipation plate 40 and the heat dissipation plate connecting plate 41 are in a grid shape, so that the heat dissipation efficiency is improved. The first heat dissipation hole 400 and the second heat dissipation hole 410 are respectively arranged on the heat dissipation plate 40 and the heat dissipation plate connecting plate 41, so that the air circulation is enhanced, and the heat dissipation efficiency is improved. The heat dissipation assembly 5 arranged on the bottom surface of the housing 1 is provided with a heat dissipation fan 52, and the heat dissipation fan 52 drives the fan to rotate through air flow in the driving process of the automobile, so that the air circulation of the bottom surface of the shell 10 is enhanced, and the heat dissipation efficiency is improved.
Claims (10)
1. The utility model provides a power converter structure for new energy automobile, characterized by, includes shell (1), shell (1) bottom is provided with bubble cotton board (2), shell (1) in-connection has power converter subassembly (3), bubble cotton board (2) top is arranged in power converter subassembly (3), two lateral surfaces of shell (1) are provided with radiator block subassembly (4), shell (1) bottom surface is provided with radiator block (5), shell (1) terminal surface is provided with connecting plug (6), connecting plug (6) are connected with power converter subassembly (3).
2. The power converter structure for the new energy automobile according to claim 1, wherein the casing (1) comprises a casing (10) and a casing cover (11), the casing (10) is in the shape of a rectangular box with an open upper end, and the casing cover (11) is connected with the open end of the casing (10).
3. The power converter structure for the new energy automobile according to claim 2, wherein a yielding groove (110) is formed in a bottom surface of the housing cover (11), a sealing strip (111) is connected to a side wall of the yielding groove (110), and the bottom surface of the sealing strip (111) is in contact with an opening end surface of the housing (10).
4. The power converter structure for the new energy automobile according to claim 2, wherein the heat dissipation plate assembly (4) comprises a plurality of heat dissipation plates (40) perpendicular to the housing (10), the heat dissipation plates (40) are connected with heat dissipation connecting plates (41) in a penetrating manner, and heat dissipation glue (42) is arranged between the heat dissipation connecting plates (41) and the housing (10).
5. The power converter structure for the new energy automobile according to claim 4, wherein the heat dissipation plate (40) is provided with a first heat dissipation hole (400), the first heat dissipation hole (400) penetrates through the upper end face and the lower end face of the heat dissipation plate (40), the heat dissipation connection plate (41) is provided with a second heat dissipation hole (410), and the second heat dissipation hole (410) penetrates through two ends of the heat dissipation connection plate (41).
6. The power converter structure for the new energy automobile according to claim 2, wherein the heat dissipation assembly (5) comprises a plurality of heat dissipation fins (50) vertically connected with the bottom surface of the housing (10), the plurality of heat dissipation fins (50) are uniformly arranged, the heat dissipation fins (50) are provided with the yielding holes (51), the bottom surface of the housing (10) is provided with the heat dissipation fan (52), and the heat dissipation fan (52) is arranged in the yielding holes (51).
7. The power converter structure for the new energy automobile according to claim 6, wherein the heat dissipation fan (52) includes a fan blade wheel (520) and a connection seat (521), the connection seat (521) is connected to the bottom surface of the housing (10), the connection seat (521) is provided with a mounting hole (522), the mounting hole (522) is a stepped hole, the end of the fan blade wheel (520) is connected to a connection rod (523), the end of the connection rod (523) is provided with a projection (524), the connection rod (523) is sleeved with the mounting hole (522), and the projection (524) is in contact with the inner wall of the mounting hole (522).
8. The power converter structure for the new energy automobile according to claim 1, wherein the power conversion assembly (3) comprises a transformer (30) and a power board (31), and the transformer (30) is integrated with the power board (31).
9. The power converter structure for the new energy automobile as claimed in claim 1, wherein the power board (31) is made of thick copper PCB technology.
10. A production process of a power converter for a new energy automobile comprises the following steps:
pre-processing: programming a power board (31), and cleaning a heat dissipation board assembly (4) and a heat dissipation assembly (5);
assembling: the power converter component (3) is assembled with the shell (10), the functional converter component (3) is connected with the connecting plug (6), and the shell cover (11) is tightly connected with the shell (10);
testing and packaging: and performing functionality test on the functional converter, and packaging a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532829.6A CN113260193B (en) | 2021-05-17 | 2021-05-17 | Power converter for new energy automobile and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532829.6A CN113260193B (en) | 2021-05-17 | 2021-05-17 | Power converter for new energy automobile and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113260193A true CN113260193A (en) | 2021-08-13 |
| CN113260193B CN113260193B (en) | 2022-09-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110532829.6A Active CN113260193B (en) | 2021-05-17 | 2021-05-17 | Power converter for new energy automobile and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113260193B (en) |
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| JP2007150302A (en) * | 1997-02-24 | 2007-06-14 | Fujitsu Ltd | Heat sink and information processor mounting the same |
| US20070193724A1 (en) * | 2006-02-17 | 2007-08-23 | Sheng-Huang Lin | Heat dissipating device |
| CN102891592A (en) * | 2012-10-22 | 2013-01-23 | 江苏凯灵汽车电器有限公司 | Waterproof and dustproof self-radiating type motor-driven automobile direct current voltage changer |
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| CN209925125U (en) * | 2019-03-15 | 2020-01-10 | 南通普盛动力有限公司 | Radiating tube of cooler of diesel engine |
| CN210008132U (en) * | 2019-03-22 | 2020-01-31 | 无锡华盛力通电驱动系统有限公司 | Radiating assembly of motor controllers |
-
2021
- 2021-05-17 CN CN202110532829.6A patent/CN113260193B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007150302A (en) * | 1997-02-24 | 2007-06-14 | Fujitsu Ltd | Heat sink and information processor mounting the same |
| US6625021B1 (en) * | 2002-07-22 | 2003-09-23 | Intel Corporation | Heat sink with heat pipes and fan |
| JP2004251212A (en) * | 2003-02-20 | 2004-09-09 | Fuji Heavy Ind Ltd | Forced air-cooling type cooling device |
| US20070193724A1 (en) * | 2006-02-17 | 2007-08-23 | Sheng-Huang Lin | Heat dissipating device |
| CN102891592A (en) * | 2012-10-22 | 2013-01-23 | 江苏凯灵汽车电器有限公司 | Waterproof and dustproof self-radiating type motor-driven automobile direct current voltage changer |
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| CN205753751U (en) * | 2016-05-20 | 2016-11-30 | 德州杰诺新能源有限公司 | A kind of motor end cap structure |
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|---|---|
| CN113260193B (en) | 2022-09-20 |
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Effective date of registration: 20231114 Address after: Room 202-203, No. 2, Lane 1130, Tongpu Road, Putuo District, Shanghai 200333 Patentee after: Hanbo automation technology (Shanghai) Co.,Ltd. Address before: 313100 2 / F, building 4, National University Science Park, no.669 high speed railway, Changxing Development Zone, Huzhou City, Zhejiang Province Patentee before: Zhejiang Junyi Technology Co.,Ltd. |