CN109102957B - High-voltage wire harness of electric vehicle - Google Patents
High-voltage wire harness of electric vehicle Download PDFInfo
- Publication number
- CN109102957B CN109102957B CN201810909531.0A CN201810909531A CN109102957B CN 109102957 B CN109102957 B CN 109102957B CN 201810909531 A CN201810909531 A CN 201810909531A CN 109102957 B CN109102957 B CN 109102957B
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- Prior art keywords
- voltage
- layer
- red copper
- shielding
- voltage wire
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
-
- 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
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
-
- 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
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
Abstract
The invention discloses a high-voltage wire harness of an electric vehicle, which solves the technical problems that the traditional high-voltage wire harness braided shielding net has low production efficiency and high production cost, and an automobile connector contact structure has larger contact resistance, higher market price, poor friction resistance and low plugging times; the high-voltage line shielding layer is a red copper foil layer, a tinned red copper foil layer or a bronze foil layer; the combined shielding layer comprises a heat shrinkage pipe layer, wherein a plurality of red copper tape layers, tinned red copper tape layers or bronze tape layers are wound on the outer side of the heat shrinkage pipe layer. The invention is simple and effective, the shielding effect accords with LV215 standard, can effectively popularize the application of the high-voltage connector, and is convenient for mass production application.
Description
Technical Field
The invention relates to the field of automobile wire harnesses, in particular to an electric vehicle high-voltage wire harness.
Background
The electric automobile is a system with high voltage above 600V and high current above 300A, the shielding of the high-voltage wire harness comprises the shielding of the high-voltage wire and the shielding of the joint between the shielding layer of the high-voltage wire and the crimped shielding joint, and the traditional high-voltage wire shielding method is a method of braiding a shielding net by adopting tin-plated copper wires and then winding an aluminum foil, so that the production efficiency of the braided shielding net is low, and the production cost is high. The high-voltage wire harness needs special equipment to scatter and shear a shielding net of a wire stripping part before crimping, the shielding ring is adopted for shielding at the joint between a shielding layer of the high-voltage wire and a shielding joint of the crimping, the size of the shielding ring changes according to the wire diameter size of the high-voltage wire harness and needs special equipment for crimping, different mold processing needs to be developed when the size of the shielding ring changes, and higher funds are required to be invested in the development of the mold, so that the cost of the high-voltage wire harness is increased, and the development of a new shielding mode has important significance in reducing the cost. The traditional automobile connector contact structure cannot meet standard requirements in terms of electrical property safety and contact resistance, and the petal structure in the high-voltage socket contact structure of the currently adopted high-voltage wire harness of the electric vehicle is simple in processing, few in contact points and larger in contact resistance; the smooth inner cavity of the socket is embedded with the double-spiral and wire-spring structure crown spring, although the contact points are more, the machining is complex, the market price is higher, the crown spring is used as an intermediate to form secondary contact, and the crown spring is not in direct contact with the plug and the socket, so that the risk is increased. The contact end of the current high-voltage plug adopts a smooth structure. Meanwhile, silver or gold is plated on the surface of the contact structure in the high-voltage connector to reduce contact resistance, and the contact resistance is reduced due to low hardness of silver and gold, low friction resistance and low plugging times. Therefore, the development of a novel high-voltage plug structure of the high-voltage wire harness forms linear contact with the inner cavity of the smooth socket, and the search of a novel surface coating of the inner contact structure of the high-voltage connector of the high-voltage wire harness has important significance in reducing the cost of the high-voltage connector of the electric vehicle, ensuring the contact reliability of the high-voltage connector and improving the hardness and the friction resistance of the coating.
Disclosure of Invention
The invention aims to solve the technical problems that the traditional high-voltage wire harness braided shielding net has low production efficiency, high production cost, larger contact resistance of an automobile connector contact structure, higher market price, poor friction resistance and low plugging frequency, and provides a simple and effective high-voltage wire harness of an electric vehicle with good shielding effect.
In order to solve the technical problems, the invention adopts the following technical scheme: the high-voltage wire harness of the electric vehicle comprises a high-voltage wire shielding layer arranged on the outer side of the high-voltage wire, a combined shielding layer at the joint of the high-voltage wire shielding layer and a shielding joint, and a high-voltage plug, wherein the high-voltage wire is connected with the high-voltage plug in a crimping way; the high-voltage line shielding layer is a red copper foil layer, a tinned red copper foil layer or a bronze foil layer; the combined shielding layer comprises a heat shrinkage pipe layer, wherein a plurality of red copper tape layers, tinned red copper tape layers or bronze tape layers are wound on the outer side of the heat shrinkage pipe layer.
The high-voltage plug comprises a crimping end, a contact end and a plug coating, wherein inner cavities at two ends of the contact end are hollow cylinders communicated with the inner cavities of the crimping end, a plurality of linear elastic contact pieces are arranged in the middle of the contact end, and annular opening linear elastic sheets are embedded in the linear elastic contact pieces.
The annular opening linear elastic sheet comprises a metal tube, an arc-shaped bulge is arranged in the middle of the metal tube, and strip-shaped gaps are formed in the arc-shaped bulge to form a plurality of metal elastic sheets; the metal tube is provided with a seam along the axial direction.
The crimping end is a hollow cylinder with a wall thickness of 1 mm, an inner diameter of 10 mm and a length of 15 mm.
The linear elastic contact piece is arc-shaped, and the thickness of the linear elastic contact piece is 0.5 mm and the width of the linear elastic contact piece is 1.5 mm.
The inner surface of the socket matched with the high-voltage plug is an inner tooth type thread or a smooth surface.
The plug coating is a silver-nickel alloy coating, a silver-nickel nano graphite sheet or a silver-nickel carbon nano tube composite coating.
And the high-voltage wire is connected with the high-voltage plug by adopting square crimping or hexagonal crimping.
The high-voltage line shielding layer is formed by winding a red copper foil layer with the width of 13-17 mm and the thickness of 0.1-0.15 mm, and a tinned red copper foil layer or a bronze foil layer with the inclination angle of 30-50 degrees, and overlapping each other by 1.5-2.5 mm.
The red copper tape layer, the tinned red copper tape layer or the bronze tape layer is 13-17-mm in width and 0.1-0.15-mm in thickness.
The invention has the beneficial effects that: 1. the shielding layer of the high-voltage line adopts a copper foil with the width of 13-17 mm and the thickness of 0.1-0.15 mm, or a tin-plated copper foil, or a bronze foil, which are stacked at an angle of 30-50 degrees, and wound by 1.5-2.5 mm to replace tin-plated copper wires, so that 100% shielding can be realized, the shielding effect is improved, the manufacturing efficiency of the shielding layer is improved by more than 50%, an aluminum foil layer is saved, and the procedure of scattering the stripping shielding net by special equipment during crimping is omitted. 2. The combined shielding layer at the joint between the shielding layer of the high-voltage line and the crimped shielding joint is formed by winding red copper, tinned red copper or bronze tape with the width of 13-17 mm and the thickness of 0.1-0.15 mm at the joint to replace the shielding ring, so that the crimping shielding ring equipment is reduced, and the development investment of a shielding ring mould is saved; 3. the linear elastic contact piece at the contact end of the plug can directly form linear contact with the socket, so that good contact of the plug and the socket is ensured, and no intermediaries such as crown springs and the like are needed; 4. the stainless steel annular opening linear elastic sheet is embedded below the linear elastic contact sheet, so that the fatigue resistance of the linear contact elastic sheet is improved, and the service life is prolonged; 5. the silver-nickel or silver-nickel nano graphite sheet or silver-nickel carbon nano tube composite coating is adopted to replace the conventional silver or gold coating, so that the hardness and wear resistance of the coating are improved, and the number of times of plugging and unplugging the high-voltage terminal is increased. 6. The method is simple and effective, the shielding effect accords with LV215 standard, the application of the high-voltage connector can be effectively promoted, and the mass production application is facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the high voltage plug of the present invention;
FIG. 3 is a schematic view of an annular opening linear spring structure according to the present invention;
fig. 4 is a schematic cross-sectional structure of the high-voltage plug and the annular opening linear spring plate of the 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 any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, a high-voltage wire harness of an electric vehicle comprises a high-voltage wire shielding layer 1 arranged on the outer side of a high-voltage wire 5, a combined shielding layer 2 at the joint of the high-voltage wire shielding layer 1 and a shielding joint, and a high-voltage plug 3, wherein the high-voltage wire 5 is in pressure connection with the high-voltage plug 3; the high-voltage line shielding layer 1 is a red copper foil layer, a tinned red copper foil layer or a bronze foil layer; the combined shielding layer 2 comprises a heat shrinkage tube layer 21, and a plurality of red copper tape layers, tinned red copper tape layers or bronze tape layers are wound on the outer side of the heat shrinkage tube layer 21.
The high-voltage plug 3 comprises a crimping end 31, a contact end 32 and a plug coating, wherein inner cavities at two ends of the contact end 32 are hollow cylinders communicated with the inner cavities of the crimping end 31, a plurality of linear elastic contact pieces 35 are arranged in the middle of the contact end 32, and annular opening linear elastic sheets 4 are embedded in the linear elastic contact pieces 35. The crimping end 31 and the contact end 32 are integrally formed.
The annular opening linear elastic sheet 4 comprises a metal tube 41, an arc-shaped bulge is arranged in the middle of the metal tube 41, and a strip-shaped gap 42 is formed in the arc-shaped bulge to form a plurality of metal elastic sheets 43; the metal tube 41 is provided with a seam 44 along the axial direction. The metal tube 41 is a stainless steel metal tube, the inner diameter of the two ends of the metal tube 41 is 9 mm, the outer diameter is 10 mm, the wall thickness is 0.5 mm, the linear length is 27.5 mm, and the seam width is controlled within 0.5 mm. The stainless steel annular opening linear spring 4 is embedded into the linear elastic contact piece.
The crimping end 31 is a hollow cylinder with a wall thickness of 1 mm, an inner diameter of 10 mm and a length of 15 mm.
The linear elastic contact piece 35 is arc-shaped, and the thickness of the linear elastic contact piece 35 is 0.5 mm and the width is 1.5 mm. The maximum vertical distance between the arc-shaped linear elastic contact piece 35 and the outer surfaces of the hollow cylinders at the two ends of the contact end 32 is 2.5 mm, and the distance between the two ends of the linear elastic contact piece 35 is 20 mm.
The inner surface of the socket matched with the high-voltage plug 3 is an inner tooth type thread or a smooth surface.
The plug coating is a silver-nickel alloy coating, a silver-nickel nano graphite sheet or a silver-nickel carbon nano tube composite coating. The nickel content of the silver-nickel alloy coating is 1.5-3%, the balance is silver, and the thickness of the silver-nickel alloy coating is 1.5-3 microns; the thickness of the silver-nickel-carbon nanotube composite coating is 1-2 microns, the nickel content in the coating is 1-2%, the content of graphite flakes or carbon nanotubes is 0.5-1%, and the balance is silver; the plating of the present invention may be used in contact structures for other high voltage connectors.
And the high-voltage wire is connected with the high-voltage plug by adopting square crimping or hexagonal crimping. At least two opposite press-connection surfaces are provided with pits to ensure that the pull-out force and the press-connection resistance are qualified.
The high-voltage line shielding layer 1 is formed by winding a red copper foil layer, a tinned red copper foil layer or a bronze foil layer which is 13-17-mm in width and 0.1-0.15-mm in thickness in a manner of being inclined at an angle of 30-50 degrees and stacked and pressed with each other by 1.5-2.5-mm. The conductors and the inner and outer insulating layers of the high-voltage wire are made of the same materials and sizes as those of common high-voltage wire bundles.
The red copper tape layer, the tinned red copper tape layer or the bronze tape layer is 13-17-mm in width and 0.1-0.15-mm in thickness. The combined shielding layer 2 at the joint of the high-voltage wire shielding layer 1 and the crimped shielding joint is firstly sealed by a heat-shrinkable tube layer 21, and then the two to three layers of copper tape, tin-plated copper tape or bronze tape with the width of 13-17 mm and the thickness of 0.1-0.15 mm are wound outside the heat-shrinkable tube layer 21, so that no inner layer is exposed for shielding.
Claims (6)
1. The utility model provides an electric motor car high voltage pencil which characterized in that: the high-voltage wire comprises a high-voltage wire shielding layer (1) arranged on the outer side of a high-voltage wire (5), a combined shielding layer (2) arranged at the joint of the high-voltage wire shielding layer (1) and a shielding joint, and a high-voltage plug (3), wherein the high-voltage wire (5) is in pressure connection with the high-voltage plug (3); the high-voltage line shielding layer (1) is a red copper foil layer, a tinned red copper foil layer or a bronze foil layer; the combined shielding layer (2) comprises a heat shrinkage pipe layer (21), wherein a plurality of red copper tape layers, tinned red copper tape layers or bronze tape layers are wound on the outer side of the heat shrinkage pipe layer (21);
the high-voltage plug (3) comprises a crimping end (31), a contact end (32) and a plug coating, wherein inner cavities at two ends of the contact end (32) are hollow cylinders communicated with the inner cavities of the crimping end (31), a plurality of linear elastic contact pieces (35) are arranged in the middle of the contact end (32), and annular opening linear elastic sheets (4) are embedded in the linear elastic contact pieces (35);
the plug coating is a silver-nickel alloy coating, a silver-nickel nano graphite sheet or a silver-nickel carbon nano tube composite coating;
the high-voltage wire shielding layer (1) is formed by winding a red copper foil layer, a tinned red copper foil layer or a bronze foil layer, which are 13-17-mm in width and 0.1-0.15-mm in thickness, in a manner of being inclined at an angle of 30-50 degrees, and overlapping each other by 1.5-2.5-mm;
one layer of red copper tape layer, tinned red copper tape layer or bronze tape layer is 13-17-mm in width and 0.1-0.15-mm in thickness.
2. The electric vehicle high voltage harness of claim 1, wherein: the annular opening linear elastic sheet (4) comprises a metal tube (41), an arc-shaped bulge is arranged in the middle of the metal tube (41), and strip-shaped gaps (42) are formed in the arc-shaped bulge to form a plurality of metal elastic sheets (43); a seam (44) is formed in the metal tube (41) in the axial direction.
3. The electric vehicle high voltage harness of claim 1, wherein: the crimping end (31) is a hollow cylinder with the wall thickness of 1 mm, the inner diameter of 10 mm and the length of 15 mm.
4. The electric vehicle high voltage harness of claim 1, wherein: the linear elastic contact piece (35) is arc-shaped, the thickness of the linear elastic contact piece (35) is 0.5 mm, and the width of the linear elastic contact piece is 1.5 mm.
5. The electric vehicle high voltage harness of claim 1, wherein: the inner surface of the socket matched with the high-voltage plug (3) is an inner tooth type thread or a smooth surface.
6. The electric vehicle high voltage harness of claim 1, wherein: and the high-voltage wire is connected with the high-voltage plug by adopting square crimping or hexagonal crimping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909531.0A CN109102957B (en) | 2018-08-10 | 2018-08-10 | High-voltage wire harness of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909531.0A CN109102957B (en) | 2018-08-10 | 2018-08-10 | High-voltage wire harness of electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109102957A CN109102957A (en) | 2018-12-28 |
| CN109102957B true CN109102957B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810909531.0A Active CN109102957B (en) | 2018-08-10 | 2018-08-10 | High-voltage wire harness of electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN109102957B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202817443U (en) * | 2012-09-20 | 2013-03-20 | 北京智行鸿远汽车技术有限公司 | Electric automobile high-voltage wire harness |
| JP2013122896A (en) * | 2011-12-12 | 2013-06-20 | Sumitomo Wiring Syst Ltd | Shield connector connecting structure of electric wire |
| CN205543501U (en) * | 2016-03-16 | 2016-08-31 | 长春一汽富晟李尔汽车电器电子有限公司 | On -vehicle shield assembly who charges socket high pressure pencil of electric automobile |
| CN205791428U (en) * | 2016-06-28 | 2016-12-07 | 大洋电机新动力科技有限公司 | A kind of high-voltage wiring harness shielding construction and the motor of application thereof |
| CN106409376A (en) * | 2016-11-29 | 2017-02-15 | 河南天海电器有限公司 | High-voltage aluminum or aluminum alloy wiring harness for electric vehicles and making method thereof |
| CN106710693A (en) * | 2016-11-24 | 2017-05-24 | 深圳市沃特玛电池有限公司 | High-voltage wire harness shielding structure |
| CN206489916U (en) * | 2017-02-28 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Shield heat-shrink tube |
| CN207474101U (en) * | 2017-10-11 | 2018-06-08 | 上海宝宇电线电缆制造有限公司 | A kind of control cable for inverter |
| CN207624427U (en) * | 2017-12-15 | 2018-07-17 | 合肥凯纳特光电科技有限公司 | A kind of high voltage power harness |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5978509B2 (en) * | 2011-07-25 | 2016-08-24 | 矢崎総業株式会社 | High voltage conductive path and wire harness |
-
2018
- 2018-08-10 CN CN201810909531.0A patent/CN109102957B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013122896A (en) * | 2011-12-12 | 2013-06-20 | Sumitomo Wiring Syst Ltd | Shield connector connecting structure of electric wire |
| CN202817443U (en) * | 2012-09-20 | 2013-03-20 | 北京智行鸿远汽车技术有限公司 | Electric automobile high-voltage wire harness |
| CN205543501U (en) * | 2016-03-16 | 2016-08-31 | 长春一汽富晟李尔汽车电器电子有限公司 | On -vehicle shield assembly who charges socket high pressure pencil of electric automobile |
| CN205791428U (en) * | 2016-06-28 | 2016-12-07 | 大洋电机新动力科技有限公司 | A kind of high-voltage wiring harness shielding construction and the motor of application thereof |
| CN106710693A (en) * | 2016-11-24 | 2017-05-24 | 深圳市沃特玛电池有限公司 | High-voltage wire harness shielding structure |
| CN106409376A (en) * | 2016-11-29 | 2017-02-15 | 河南天海电器有限公司 | High-voltage aluminum or aluminum alloy wiring harness for electric vehicles and making method thereof |
| CN206489916U (en) * | 2017-02-28 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Shield heat-shrink tube |
| CN207474101U (en) * | 2017-10-11 | 2018-06-08 | 上海宝宇电线电缆制造有限公司 | A kind of control cable for inverter |
| CN207624427U (en) * | 2017-12-15 | 2018-07-17 | 合肥凯纳特光电科技有限公司 | A kind of high voltage power harness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109102957A (en) | 2018-12-28 |
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