CN113571975B - Copper bar assembly and electronic equipment - Google Patents
Copper bar assembly and electronic equipment Download PDFInfo
- Publication number
- CN113571975B CN113571975B CN202110829978.9A CN202110829978A CN113571975B CN 113571975 B CN113571975 B CN 113571975B CN 202110829978 A CN202110829978 A CN 202110829978A CN 113571975 B CN113571975 B CN 113571975B
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- Prior art keywords
- copper bar
- bar assembly
- pins
- shield
- pin
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 172
- 239000010949 copper Substances 0.000 title claims abstract description 172
- 238000005192 partition Methods 0.000 claims description 17
- 230000005672 electromagnetic field Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims 1
- 230000003071 parasitic effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
- H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
- H01R13/6588—Shielding material individually surrounding or interposed between mutually spaced contacts with through openings for individual contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/161—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/161—Details
- H01R25/162—Electrical connections between or with rails or bus-bars
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a copper bar assembly and electronic equipment, wherein the copper bar assembly comprises a first copper bar and a second copper bar, the first copper bar comprises a first copper bar main body and at least two pins which are connected with the first copper bar main body, and the first copper bar main body is connected with the second copper bar; the copper bar assembly further includes: a first shield, and/or a second shield, and/or a third shield; at least one pin is wrapped by a first shielding piece, a second shielding piece is wrapped by a second copper bar, and a third shielding piece is wrapped by a first copper bar main body. The copper bar assembly improves the current uniformity of each parallel branch.
Description
Technical Field
The invention relates to the technical field of electric device connection, in particular to a copper bar assembly and electronic equipment.
Background
In electronic devices such as inverters, copper bars are generally used to connect electrical devices. When at least two devices are connected in parallel, current sharing of the electric devices needs to be considered, and copper bar design has a larger influence on current sharing, for example, copper bars on an alternating current output side can influence current sharing of all the electric devices.
Specifically, electromagnetic fields of all pins of the busbar can interfere with each other, so that all parallel branches are not current-sharing; the busbar is connected with output copper bar, and the electromagnetic field between output copper bar and the busbar can influence each other, also can lead to each parallel branch to not flow.
In addition, for the bus bar copper, when the parasitic inductance of the junction of the electrical device to the bus bar copper is greatly different, the parallel branches may not flow uniformly.
In summary, how to provide a copper bar assembly to improve the current uniformity of each parallel branch is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a copper bar assembly for improving the current uniformity of each parallel branch. Another object of the present invention is to provide an electronic device comprising the copper bar assembly described above.
In order to achieve the above object, the present invention provides the following technical solutions:
The copper bar assembly comprises a first copper bar and a second copper bar, wherein the first copper bar comprises a first copper bar main body and at least two pins which are connected with the first copper bar main body, and the first copper bar main body is connected with the second copper bar;
the copper bar assembly further includes: a first shield, and/or a second shield, and/or a third shield; at least one pin is wrapped by the first shielding piece, the second shielding piece is wrapped by the second copper bar, and the third shielding piece is wrapped by the first copper bar main body.
Optionally, the first shielding pieces are in one-to-one correspondence with the pins.
Optionally, the first shielding member extends from an end of the pin connected to the first copper bar main body to a connection end B of the pin, where the connection end B is an end of the pin used for connection with an electrical device.
Optionally, the first shield is provided with a first grounding structure and/or the second shield is provided with a second grounding structure and/or the third shield is provided with a third grounding structure.
Optionally, the first copper bar main body is provided with a connection end a connected with the second copper bar, all the pins are located on the same side of the connection end a, and all the pins are symmetrically arranged with respect to the connection end a.
Optionally, the connection ends B of all the pins are distributed along an inverted V shape, and the connection ends B are used for connecting with an electrical device.
Optionally, the connection ends B of any two pins are on the same arc line, and the circle center of the arc line is the connection end A.
Optionally, the first copper bar main body is provided with a partition through hole, the partition through hole penetrates through the first copper bar main body along the thickness direction of the first copper bar main body, and the partition through hole extends from the pin in the middle to the pins on two sides.
Optionally, two ends of the isolating through hole are close to the pins, and the middle part of the isolating through hole is far away from the pins.
Optionally, the first copper bar is a busbar copper bar, and the second copper bar is an output copper bar.
Optionally, the first copper bar is a shunt copper bar, and the second copper bar is an input copper bar.
According to the copper bar assembly, the first shielding piece and/or the second shielding piece and/or the third shielding piece are/is arranged, and at least one pin of the first copper bar is wrapped by the first shielding piece, so that the influence of an electromagnetic field of the pin on current sharing can be reduced, and the current sharing performance of each parallel branch circuit is improved; the second shielding piece is wrapped on the second copper bar, so that the mutual influence of electromagnetic fields between the first copper bar and the second copper bar is reduced, and the current uniformity of each parallel branch is improved; the third shielding piece wraps the first copper bar main body, so that the mutual influence of electromagnetic fields between the first copper bar and the second copper bar is reduced, and the current uniformity of each parallel branch is improved. Therefore, the copper bar assembly improves the current uniformity of each parallel branch.
Based on the copper bar assembly, the invention further provides electronic equipment, which comprises the copper bar assembly, wherein the copper bar assembly is any one of the copper bar assemblies.
Optionally, the electronic device is an inverter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a copper bar assembly according to an embodiment of the present invention;
FIG. 2 is an exploded view of the structure shown in FIG. 1;
Fig. 3 is a schematic structural diagram of a copper bar assembly according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a copper bar assembly according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a copper bar assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a copper bar assembly according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the copper bar assembly provided in the embodiment of the present invention includes a first copper bar 2 and a second copper bar 3, where the first copper bar 2 includes a first copper bar main body 26 and at least two pins connected to the first copper bar main body 26, and the first copper bar main body 26 is connected to the second copper bar 3. It will be appreciated that any two pins are arranged in parallel.
The copper bar assembly further comprises: a first shield 5, and/or a second shield 4, and/or a third shield 6; at least one pin is wrapped by a first shielding member 5, a second shielding member 4 is wrapped by a second copper bar 3, and a third shielding member 6 is wrapped by a first copper bar main body 26.
Specifically, the copper bar assembly includes a first shield member 5, as shown in fig. 3; alternatively, the copper bar assembly includes a second shield 4, as shown in fig. 1 and 2; alternatively, the copper bar assembly includes a third shield 6; alternatively, the copper bar assembly includes a first shield 5 and a second shield 4, as shown in fig. 4 and 5; or, the copper bar assembly includes a third shielding member 6 and a second shielding member 4; alternatively, the copper bar assembly includes a first shield 5 and a third shield 6, as shown in fig. 6; alternatively, the copper bar assembly includes a first shield 5, a second shield 4, and a third shield 6.
According to the copper bar assembly provided by the embodiment of the invention, the first shielding piece 5 and/or the second shielding piece 4 and/or the third shielding piece 6 are arranged, and at least one pin of the first copper bar 2 is wrapped by the first shielding piece 5, so that the influence of an electromagnetic field of the pin on current sharing can be reduced, and the current sharing performance of each parallel branch is improved; the second shielding piece 4 is wrapped on the second copper bar 3, so that the mutual influence of electromagnetic fields between the first copper bar 2 and the second copper bar 3 is reduced, and the current uniformity of each parallel branch is improved; the third shielding member 6 is wrapped around the first copper bar body 26, so that the mutual influence of the electromagnetic fields between the first copper bar 2 and the second copper bar 3 is reduced, and the current uniformity of each parallel branch is improved. Therefore, the copper bar assembly improves the current uniformity of each parallel branch.
The number, size and shape of the first shields 5 are selected according to actual needs. Specifically, in order to avoid the electromagnetic field of the pins from affecting the current sharing, each pin may be optionally wrapped by the first shielding member 5, that is, the first shielding member 5 is wrapped around each pin. At this time, the first shielding members 5 may be selected to correspond to the pins one by one, or at least two first shielding members 5 may be selected to correspond to one pin. The former is preferred for ease of installation.
The first shielding member 5 may cover the entire pin, or alternatively, the first shielding member 5 may include a portion of the pin. In order to improve the shielding effect, the former is preferably selected, that is, the first shielding member 5 extends from the end of the pin connected to the first copper bar body 26 to the connection end B of the pin, which is the end of the pin for connection to the electric device 1. In practice, the first shielding member 5 is also used for wrapping the connection structure of the pins and the electrical device 1.
The number, size and shape of the second shields 4 are chosen according to the actual needs. To simplify the installation, the second shield 4 may be selected as one. Of course, two or more second shielding members 4 may be selected, which is not limited in this embodiment.
Specifically, the second copper bar 3 has a connection terminal C31 connected to the first copper bar 2. The second shield 4 may be selected as close to the connection end C31 as possible to enhance the shielding effect. In the practical application process, the second shielding member 4 may be selected to wrap the whole second copper bar 3, or the second shielding member 4 may be selected to wrap a part of the second copper bar 3.
The number, size and shape of the third shields 6 are chosen according to the actual needs. To simplify the installation, the third shield 6 may be selected as one. Of course, two or more third shields 6 may be selected, and this embodiment is not limited thereto.
Specifically, the first copper bar body 26 has a connection end a262 connected to the second copper bar 3. The third shield 6 may be selected as close to the connection end a262 as possible to enhance the shielding effect. In the practical application process, the third shielding member 6 may be selected to wrap the whole first copper bar main body 26, or the third shielding member 6 may be selected to wrap a part of the first copper bar main body 26.
In order to increase the shielding effect, it is also possible to choose that the first shielding 5 is provided with a first grounding structure 51 and/or that the second shielding 4 is provided with a second grounding structure 41 and/or that the third shielding 6 is provided with a third grounding structure 61.
The specific types of the first grounding structure 51, the second grounding structure 41 and the third grounding structure 61 are selected according to actual needs, and the first grounding structure 51, the second grounding structure 41 and the third grounding structure 61 are all grounding wires, which are not limited in this embodiment.
In order to further optimize the above technical solution, the first copper bar main body 26 is provided with a connection end a262 connected with the second copper bar 3, all the pins are located on the same side of the connection end a262, and all the pins are symmetrically arranged about the connection end a 262.
It will be appreciated that all pins are arranged axisymmetrically about the connection a 262. Specifically, as shown in fig. 2, the number of pins is five, and the pins are respectively a first pin 21, a second pin 22, a third pin 23, a fourth pin 24 and a fifth pin 25, the first pin 21 and the fifth pin 25 are axisymmetrically arranged, the second pin 22 and the fourth pin 24 are axisymmetrically arranged, and the third pin 23 and the connecting end a262 are oppositely arranged, that is, the third pin 23 and the connecting end a262 are both located on a symmetrical axis.
In the copper bar assembly, as all the pins are symmetrically arranged about the connecting end A262, the difference value between the connecting end B of each pin and the connecting end A262 is effectively reduced, and the parasitic inductance difference value between the connecting end B of each pin and the connecting end A262 is reduced, so that the current uniformity of each parallel branch is improved.
In the practical application process, the connection ends B of all the pins can be selected to be distributed along the inverted V shape. As shown in fig. 2, the first connection end B211 of the first pin 21, the first connection end B221 of the first pin 22, the third connection end B231 of the third pin 23, the fourth connection end B241 of the fourth pin 24, and the fifth connection end B251 of the fifth pin 25 are distributed along an inverted V shape in order. It will be appreciated that at this point the length of the pins decreases progressively from the middle pin to the two side pins.
The connection ends B of the pins may be distributed in other shapes, and the lengths of the pins may be selected according to actual needs, which is not limited in this embodiment.
In order to eliminate the parasitic inductance difference between the connecting end B and the connecting end A262 of each pin, the connecting ends B of any two pins are positioned on the same arc line, and the circle center of the arc line is the connecting end A262. It will be appreciated that the center of the arc is the midpoint of the connection a262, which is in the same plane as the pins.
In practical applications, the parasitic inductance difference between the connection terminal B and the connection terminal a262 of each pin may be reduced in other manners. Specifically, the first copper bar main body 26 is provided with a partition through hole 261, the partition through hole 261 penetrates the first copper bar main body 26 in the thickness direction of the first copper bar main body 26, and the partition through hole 261 extends from the pins in the middle to the pins on both sides. It is understood that the partition through hole 261 is in a bar shape.
The shape of the partition through hole 261 is selected according to actual needs. Alternatively, two ends of the partition through hole 261 are close to the pins, and the middle of the partition through hole 261 is far away from the pins. It will be appreciated that the middle of the partition through hole is close to the connection end a262 of the first copper bar main body 26. In this way, the parasitic inductance of the connection terminal B to the connection terminal a262 of the pin located in the middle and the parasitic inductance of the connection terminal B to the connection terminal a262 of at least one pin located at both sides of the middle pin can be increased, thereby reducing the parasitic inductance difference of the connection terminal B to the connection terminal a262 of each pin.
In practical applications, the partition through hole 261 may be selected to have other shapes, which is not limited in this embodiment.
In the copper bar assembly, the first copper bar 2 can be selected as a busbar copper bar, and the second copper bar 3 is an output copper bar; alternatively, the first copper bar 2 may be a shunt copper bar, and the second copper bar 3 may be an input copper bar.
It should be noted that, if the first copper bar 2 is a busbar, the connection end a is a busbar end; if the first copper bar 2 is a shunt copper bar, the connection end a is a shunt end.
Based on the copper bar assembly provided in the foregoing embodiment, the present embodiment further provides an electronic device, where the electronic device includes a copper bar assembly, and the copper bar assembly is the copper bar assembly described in the foregoing embodiment.
Specifically, the electronic device further includes an electrical device 1, and the electrical device 1 is connected to the pins. Specifically, the electric devices 1 are in one-to-one correspondence with the pins, and the electric devices 1 are connected with the connection ends B of the pins.
Because the copper bar assembly provided in the above embodiment has the above technical effects, the above electronic device includes the copper bar assembly, and the above electronic device also has corresponding technical effects, which are not described herein again.
The type of the electronic device is selected according to actual needs, for example, the electronic device is an inverter, and the present embodiment is not limited thereto.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (15)
1. The copper bar assembly comprises a first copper bar (2) and a second copper bar (3), wherein the first copper bar (2) comprises a first copper bar main body (26) and at least two pins which are connected with the first copper bar main body (26), and the first copper bar main body (26) is connected with the second copper bar (3); it is characterized in that the method comprises the steps of,
The copper bar assembly further comprises a first shielding piece (5), at least one pin is wrapped by the first shielding piece (5), and the first shielding piece (5) can reduce the influence of an electromagnetic field of the pin on current sharing of all parallel branches.
2. Copper bar assembly according to claim 1, characterized in that the first shields (5) are in one-to-one correspondence with the pins.
3. Copper bar assembly according to claim 1, characterized in that the first shield (5) extends from the end of the pin connected to the first copper bar body (26) to the connection end B of the pin, which is the end of the pin for connection to an electrical device (1).
4. Copper bar assembly according to claim 1, characterized in that the first shield (5) is provided with a first grounding structure (51).
5. The copper bar assembly according to claim 1, characterized in that the first copper bar body (26) is provided with a connection end a (262) connected with the second copper bar (3), that all the pins are located on the same side of the connection end a (262), and that all the pins are symmetrically arranged with respect to the connection end a (262).
6. The copper bar assembly according to claim 5, characterized in that the connection ends B of all the pins are distributed along an inverted V-shape, said connection ends B being intended for connection with an electrical device (1).
7. The copper bar assembly of claim 5, wherein the connection ends B of any two pins are on the same arc, and the center of the arc is the connection end a (262).
8. The copper bar assembly according to claim 1, characterized in that the first copper bar body (26) is provided with a partition through hole (261), the partition through hole (261) penetrates the first copper bar body (26) in a thickness direction of the first copper bar body (26), and the partition through hole (261) extends from the pin in the middle portion to the pins on both sides.
9. The copper bar assembly according to claim 8, wherein both ends of the partition through hole (261) are close to the pins, and a middle portion of the partition through hole (261) is far away from the pins.
10. The copper bar assembly according to any of claims 1-9, further comprising a second shield (4) and/or a third shield (6), the second shield (4) being wrapped around the second copper bar (3), the third shield (6) being wrapped around the first copper bar body (26), the second shield (4) and the third shield (6) each being capable of reducing the interaction of electromagnetic fields between the first copper bar (2) and the second copper bar (3).
11. Copper bar assembly according to claim 10, characterized in that the second shield (4) is provided with a second grounding structure (41) and/or the third shield (6) is provided with a third grounding structure (61).
12. The copper bar assembly according to any of claims 1-9, wherein the first copper bar (2) is a busbar copper and the second copper bar (3) is an output copper bar.
13. The copper bar assembly according to any of claims 1-9, wherein the first copper bar (2) is a shunt copper bar and the second copper bar (3) is an input copper bar.
14. An electronic device comprising a copper bar assembly, characterized in that the copper bar assembly is a copper bar assembly according to any one of claims 1-13.
15. The electronic device of claim 14, wherein the electronic device is an inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110829978.9A CN113571975B (en) | 2021-07-22 | 2021-07-22 | Copper bar assembly and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110829978.9A CN113571975B (en) | 2021-07-22 | 2021-07-22 | Copper bar assembly and electronic equipment |
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| Publication Number | Publication Date |
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| CN113571975A CN113571975A (en) | 2021-10-29 |
| CN113571975B true CN113571975B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110829978.9A Active CN113571975B (en) | 2021-07-22 | 2021-07-22 | Copper bar assembly and electronic equipment |
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| CN205051588U (en) * | 2015-07-07 | 2016-02-24 | 科诺伟业风能设备（北京）有限公司 | Be applied to full power convertor's power unit structure |
| JP2017055478A (en) * | 2015-09-07 | 2017-03-16 | シンフォニアテクノロジー株式会社 | Switching circuit and power conversion device |
| CN105763076A (en) * | 2016-05-12 | 2016-07-13 | 江苏力普电子科技有限公司 | Water-cooling type power unit |
| CN206294087U (en) * | 2016-12-29 | 2017-06-30 | 北京金风科创风电设备有限公司 | The power model of air-cooled current transformer |
| CN206673843U (en) * | 2017-05-02 | 2017-11-24 | 江苏吉泰科电气股份有限公司 | One kind output copper bar component |
| CN207321092U (en) * | 2017-08-25 | 2018-05-04 | 天津瑞能电气有限公司 | IGBT power module |
| CN207543004U (en) * | 2017-09-28 | 2018-06-26 | 山东奥太电气有限公司 | A kind of high-power IGBT Parallel opertation busbar mutual inductance magnetic shielding structure |
| JP2020191250A (en) * | 2019-05-23 | 2020-11-26 | 住友電装株式会社 | connector |
| CN210272088U (en) * | 2019-07-18 | 2020-04-07 | 常州常捷科技有限公司 | Special capacitor for electric drive for integrally suppressing electromagnetic interference |
| CN110534250A (en) * | 2019-09-04 | 2019-12-03 | 何铖 | A kind of low voltage bypass copper bus-bar |
| CN211908698U (en) * | 2020-04-28 | 2020-11-10 | 郑州精益达汽车零部件有限公司 | Novel SIC motor controller structure |
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| CN113571975A (en) | 2021-10-29 |
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