CN109754915B - Safety assembly for new energy automobile cable - Google Patents
Safety assembly for new energy automobile cable Download PDFInfo
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- CN109754915B CN109754915B CN201910091556.9A CN201910091556A CN109754915B CN 109754915 B CN109754915 B CN 109754915B CN 201910091556 A CN201910091556 A CN 201910091556A CN 109754915 B CN109754915 B CN 109754915B
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Abstract
The invention relates to a safety assembly for a new energy automobile cable, which comprises a first connecting block and a second connecting block, wherein the first connecting block is connected with the second connecting block; the right end face of the first connecting block is provided with a first connecting hole and a second connecting hole, and the left end face of the second connecting block is provided with a first connecting piece and a second connecting piece; a first isolation cover is arranged at the right end of the first connecting block, and a second isolation cover is arranged at the left end of the second connecting block; the first isolation cover and the second isolation cover are oppositely arranged, and openings are formed in the opposite surfaces of the first isolation cover and the second isolation cover; the beneficial effects are that: the automatic power-off can be realized when the charging power supply is not connected, and the problem of automobile power supply damage caused by short circuit of the charging interface is effectively prevented; when the charging cable is connected with the charging power supply, the circuit path connection can be automatically realized, so that the charging operation is carried out; possess better heat dispersion, relative to common cable, this cable can be more fast with the heat derivation.
Description
Technical Field
The invention belongs to the field of automobile manufacturing industry, and particularly relates to a high-voltage cable for a vehicle.
Background
With the vigorous development of the automobile industry, high performance cables for automobiles have been proposed in the agenda, and as electronic devices in automobiles are increased in quantity, the requirements for the size of the electronic devices in automobiles are higher, on one hand, the cables are required to be as flexible as possible so as to be convenient for placement or bundling, and on the other hand, the high safety of the cables is required.
In the charging process of the automobile, the voltage is higher generally, and some high-voltage cables are needed. The existing high-voltage cable for charging the automobile can only simply realize the charging function, and because the high-voltage cable is directly connected with a power supply, a charging port of the high-voltage cable is short-circuited if wading. As shown in fig. 7, if the cable is always in the through state, the two conductors at the left end may be short-circuited when they meet water, and may damage the power supply.
The existing technologies control the on-off of a circuit through a computer program and a circuit board, which causes over high cost and great implementation difficulty.
The existing high-voltage cable has large heat productivity in the charging process, and the cable is difficult to realize the function of rapid heat dissipation. In order to realize heat dissipation, some cables need to add more heat dissipation media, which results in a complicated cable structure.
Disclosure of Invention
In order to solve the problems, the invention adopts the following technical scheme:
a safety component for a new energy automobile cable,
the device comprises a first connecting block and a second connecting block; the right end face of the first connecting block is provided with a first connecting hole and a second connecting hole, and the left end face of the second connecting block is provided with a first connecting piece and a second connecting piece;
a first isolation cover is arranged at the right end of the first connecting block, and a second isolation cover is arranged at the left end of the second connecting block; the first isolation cover and the second isolation cover are oppositely arranged, and openings are formed in the opposite surfaces of the first isolation cover and the second isolation cover; the electromagnetic connector at the right end of the first isolation cover protrudes out of the right end face of the first connecting block, and the left end of the second isolation cover is provided with an electromagnetic connecting hole matched with the electromagnetic connector;
when the first connecting hole is electrically connected with the first connecting piece and the second connecting hole is electrically connected with the second connecting piece, the first connecting block and the second connecting block are subjected to external force which enables the first connecting block and the second connecting block to be away from each other;
an electromagnetic coil is axially arranged in the first isolation cover, and two wiring terminals of the electromagnetic coil are respectively and electrically connected with the first connecting hole and the second connecting hole; a metal block is arranged in the second isolation cover; the metal block has magnetism.
Preferably, the first isolation cover and the second isolation cover are both made of metal materials; and are all cup-shaped structures.
Preferably, the first connecting hole and the first connecting piece are arranged in a matching manner; the second connecting hole and the second connecting piece are arranged in a matched mode.
Preferably, a resistor is connected in series between the electromagnetic coil and the first connecting hole or the second connecting hole.
Preferably, the first connecting block and the second connecting block slide along the sliding groove by means of the sliding block.
Preferably, the first connection hole, the second connection hole, the first connection member and the second connection member are connected to a conductive cable through an insulated wire.
Preferably, the outer layer of the insulated wire is provided with an electromagnetic shielding layer.
Preferably, the electromagnetic shielding layer is connected to the first shielding case or the second shielding case. The invention has the beneficial effects that:
1. the safety of the cable is improved, automatic control is realized through a simple mechanical and electrical principle, automatic power off can be realized when the charging power supply is not connected, and the problem that the automobile power supply is damaged due to short circuit of a charging interface is effectively solved;
2. when the charging cable is connected with the charging power supply, the circuit path connection can be automatically realized, so that the charging operation is carried out;
3. possess better heat dispersion, relative to common cable, this cable can be more fast with the heat derivation.
Drawings
FIG. 1 is a schematic view of the construction of a center line cable according to the present invention;
FIG. 2 is a schematic structural diagram of a first connecting block;
FIG. 3 is a schematic structural view of a second connecting block;
FIG. 4 is a schematic structural diagram of a first isolation cover;
FIG. 5 is a schematic structural view of a second isolation cover;
FIG. 6 is a schematic diagram of a partial circuit of the present invention;
fig. 7 is a schematic structural diagram of one mode of use of the present invention.
Detailed Description
The invention is further illustrated with reference to the accompanying drawings:
as shown in fig. 2, the safety component for the new energy automobile cable is formed by sequentially coating a center cable, an inner sheath layer, a waterproof wrapping tape, an aluminum-plastic composite shielding wrapping tape and an outer sheath layer from inside to outside; the waterproof wrapping tape is accurately described as wrapping the waterproof wrapping tape outside the inner sheath layer. The aluminum-plastic composite shielding wrapping tape can play a role in reinforcing a cable and can also play a role in shielding.
The central cable comprises an adjusting cavity 30 which is axially arranged, the adjusting cavity 30 is similar to a container, and two ends of the adjusting cavity 30 are respectively provided with a group of conductive cables 100; the number of the conductive cables 100 in one group is 2, so that loop control can be realized through one cable during charging; a filling layer is filled among the conductive cable 100, the adjusting cavity 30 and the inner sheath layer; the filling layer is generally the packing rope, and two sets of electrically conductive cables 100 are used for connecting respectively to fill electric pile and vehicle power.
Referring to fig. 1, a first connecting block 10 and a second connecting block 20 are arranged in the adjusting cavity 30, and a spring 300 is connected between the first connecting block and the second connecting block; the spring 300 causes the first and second connection blocks 10 and 20 to have a tendency to move away from each other. When the spring 300 is not deformed, the first connection hole 11 is not electrically connected to the first connection member 21, and the second connection hole 12 is not electrically connected to the second connection member 22.
Two sets of the conductive cables 100 are fixedly connected to two ends of the adjusting cavity 30. The outer layer of each conductive cable 100 is provided with an insulating layer.
The right end face of the first connecting block 10 is provided with a first connecting hole 11 and a second connecting hole 12, and the left end face of the second connecting block 20 is provided with a first connecting piece 21 and a second connecting piece 22; the first connection hole 11 and the second connection hole 12 are electrically connected to a group of the conductive cables 100 on the left side of the adjustment cavity 30, and the first connection member 21 and the second connection member 22 are electrically connected to a group of the conductive cables 100 on the right side of the adjustment cavity 30; the outer diameters of the first connecting block 10 and the second connecting block 20 are matched with the inner diameter of the adjusting cavity 30.
The first connecting hole 11 and the first connecting piece 21 are arranged in a matching way; the second connecting hole 12 and the second connecting frame 22 are arranged in a matching manner.
An electromagnetic coil 14 is axially arranged in the first isolation cover 13, and two binding posts of the electromagnetic coil 14 are respectively and electrically connected with the first connecting hole 11 and the second connecting hole 12; the second isolation cover 23 is provided with a metal block 24. The metal block 24 has magnetic properties that can create an attractive force with the electromagnetic coil 14, the metal block 24 can be attracted by a magnetic pole, and the metal block 24 can be iron.
When the conductive cable 100 on the left side of the first connecting block 10 is connected with the charging pile, current flows through the electromagnetic coil 14 to generate a magnetic field, and a resistor is connected in series between the electromagnetic coil 14 and the first connecting hole 11 or the second connecting hole 12.
With reference to fig. 7, a short circuit is not formed due to the resistance; after the left circuit is electrified, the electromagnetic coil 14 has magnetism, and has attraction force on the metal block 24, the first connecting block 10 and the second connecting block 20 are close to each other, the spring 300 is extruded, the first connecting hole 11 and the first connecting piece 21 are connected in an inserting mode to form electric connection, and the second connecting hole 12 and the second connecting piece 22 are also connected in an electric connection mode, so that the conducting cable 100 on the right side of the second connecting block 20 is electrified, and power is supplied to a vehicle-mounted power supply.
After the power that fills electric pile is cut off, no electric current flows into in first connecting block 10 left end, the on-vehicle mains voltage on second connecting block 20 right side is less than the voltage that originally fills electric pile, and simultaneously, because the power is connected with other consumer, also can drop a lot of voltages, further make the voltage of this charging wire reduce, make the electric current that passes through also can reduce in the solenoid 14, thereby solenoid 14 diminishes to 24 gravitations of metal block, gravitation is less than spring 300 elasticity, first connecting block 10 and second connecting block 20 keep away from each other, the electrical connection of the subassembly on the two cuts off, thereby make whole cable open circuit, danger can not take place when first connecting block 10 left electrically conductive cable 100 is by the short circuit.
It should be noted that the setting of the magnitude of the resistance needs to be set according to the actual voltage of the vehicle, which is a known technique. For example, the charging voltage is 220V, the electrifying moment can be understood as that the voltage of the electromagnetic coil and the resistor is divided into 220V, and when the whole cable is changed into a channel, the voltage of the electromagnetic coil and the resistor can be continuously divided into 40V; when the charging plug is unplugged, the automobile power supply is connected with other electric equipment, the power supply is only distributed to the charging circuit by 20V, the current passing through the electromagnetic coil 14 is reduced by half compared with the current passing through the electromagnetic coil, the attraction force of the electromagnetic coil is reduced along with the reduction, when the attraction force is smaller than the elastic force of the spring 300, the first connecting block 10 moves away from the second connecting block 20, so that the circuit is cut off, and then the circuit on the left side of the first connecting block 10 does not have the current passing through and cannot be automatically connected into a passage.
With reference to fig. 5 and 6, a first isolation cover 13 is disposed at the right end of the first connecting block 10, and a second isolation cover 23 is disposed at the left end of the second connecting block 20; the first isolation cover 13 and the second isolation cover 23 are oppositely arranged, and the opposite surfaces of the first isolation cover and the second isolation cover are provided with openings; the electromagnetic connector 130 at the right end of the first isolation cover 13 protrudes from the right end face of the first connecting block 10, and the left end of the second isolation cover 23 is provided with an electromagnetic connecting hole 230 matched with the electromagnetic connector 130; the first isolation cover 13 and the second isolation cover 23 are both made of metal materials; and are all cup-shaped structures, and only one end of each cup-shaped structure is provided with an opening.
Referring to fig. 3 and 4, after the first connecting block 10 and the second connecting block 20 are contacted, the first isolation cover 13 and the second isolation cover 23 are connected through the electromagnetic connector 130 and the electromagnetic connecting hole 230, and after the first isolation cover 13 and the second isolation cover 23 are connected, a cylinder is formed by the first isolation cover 13 and the second isolation cover 23, and the electromagnetic coil 14 and the metal block 24 are covered inside, so that the influence of the electromagnetic coil 14 on the current is isolated to a certain extent.
The electromagnetic coil 14 is connected with other components through a conducting wire provided with an insulating layer and passing through a small hole formed in the first isolation cover 13.
The inner wall of the adjusting cavity 30 is provided with an axial sliding groove, the outer side walls of the first connecting block 10 and the second connecting block 20 are provided with sliding blocks, and the sliding blocks are slidably clamped in the sliding grooves; the first and second connecting blocks 10 and 20 slide along the sliding grooves by means of the sliding blocks.
The first connection hole 11, the second connection hole 12, the first connection member 21 and the second connection member 22 are electrically connected with the conductive cable 100 through a stretching member 31; the tension member 31 enables the first connection block 10 and the second connection block 20 to be displaced relative to the conductive cable 100, and further to slide relative to the adjustment cavity 30.
The inner wall of the adjusting cavity 30 is provided with a polytetrafluoroethylene ester coating, so that the waterproof effect is achieved, the friction force is reduced, and the sliding is facilitated; the adjustment cavity 30 is made of an insulating material.
The inner sheath layer and the outer sheath layer are made of the same material, and the material is prepared from the following raw materials in parts by weight:
because the length of the cable for charging does not need to be over-long, the function of automatic cut-off can be realized by arranging one or two adjusting cavities in the cable.
The following are specific examples of some component ratios of the materials used for the inner jacket layer 2 and the outer jacket layer 5:
example 1
6 parts of polyolefin elastomer, 5 parts of glass fiber, 2-3 parts of nano carbon fiber, 60 parts of polyethylene, 2 parts of silicon dioxide, 1 part of ground limestone, 0.5 part of antioxidant, 5 parts of diatomite and 2 parts of sodium stearate.
Example 2
10 parts of polyolefin elastomer, 8 parts of glass fiber, 3 parts of nano carbon fiber, 70 parts of polyethylene, 3 parts of silicon dioxide, 2 parts of ground calcium carbonate, 1 part of antioxidant, 10 parts of diatomite and 3 parts of sodium stearate.
Example 3
7 parts of polyolefin elastomer, 6 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 2.5 parts of silicon dioxide, 1.5 parts of heavy calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 4
7 parts of polyolefin elastomer, 0 part of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 2.5 parts of silicon dioxide, 1.5 parts of heavy calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 5
7 parts of polyolefin elastomer, 2 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 0 part of silicon dioxide, 1.5 parts of ground calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 6
7 parts of polyolefin elastomer, 10 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 0 part of silicon dioxide, 1.5 parts of ground calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 7
7 parts of polyolefin elastomer, 2 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 10 parts of silicon dioxide, 1.5 parts of ground calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 8
7 parts of polyolefin elastomer, 2 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 3 parts of silicon dioxide, 1.5 parts of ground calcium carbonate, 0.75 part of antioxidant, 1 part of diatomite and 2.5 parts of sodium stearate.
Example 9
7 parts of polyolefin elastomer, 6 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 2.5 parts of silicon dioxide, 7 parts of ground calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
Example 10
7 parts of polyolefin elastomer, 6 parts of glass fiber, 2.5 parts of carbon nanofiber, 65 parts of polyethylene, 2.5 parts of silicon dioxide, 0.5 part of heavy calcium carbonate, 0.75 part of antioxidant, 6 parts of diatomite and 2.5 parts of sodium stearate.
The results of the performance tests for examples 1-10 are shown in the following table;
according to the table, the changes of the glass fiber, the silicon dioxide, the diatomite and the like can generate larger influence on the thermal conductivity, and the tensile resistance of the cable is ensured by adopting a proper proportion under the condition of maximally maintaining the thermal conductivity.
The terms "left" and "right" used herein are used in reference to fig. 2 and fig. 7, and are used for convenience of description and have no other special meanings.
In addition, the present invention is not limited to the above embodiments, and the technical effects of the present invention can be achieved by substantially the same means, which are within the scope of the present invention.
Claims (7)
1. New energy automobile cable is with safe subassembly, its characterized in that:
comprises a first connecting block (10) and a second connecting block (20); a first connecting hole (11) and a second connecting hole (12) are formed in the right end face of the first connecting block (10), and a first connecting piece (21) and a second connecting piece (22) are arranged on the left end face of the second connecting block (20);
a first isolation cover (13) is arranged at the right end of the first connecting block (10), and a second isolation cover (23) is arranged at the left end of the second connecting block (20); the first isolation cover (13) and the second isolation cover (23) are oppositely arranged, and the opposite surfaces of the first isolation cover and the second isolation cover are provided with openings; an electromagnetic connector (130) at the right end of the first isolation cover (13) protrudes out of the right end face of the first connecting block (10), and an electromagnetic connecting hole (230) matched with the electromagnetic connector (130) is formed in the left end of the second isolation cover (23);
when the first connecting hole (11) is electrically connected with the first connecting piece (21) and the second connecting hole (12) is electrically connected with the second connecting piece (22), the first connecting block (10) and the second connecting block (20) are subjected to external force which enables the first connecting hole and the second connecting block to be far away from each other;
an electromagnetic coil (14) is axially arranged in the first isolation cover (13), and two wiring terminals of the electromagnetic coil (14) are respectively and electrically connected with the first connecting hole (11) and the second connecting hole (12); a metal block (24) is arranged in the second isolation cover (23); the metal block (24) has magnetic properties.
2. The safety assembly for a new energy automobile cable according to claim 1, characterized in that: the first isolation cover (13) and the second isolation cover (23) are both made of metal materials; and are all cup-shaped structures.
3. The safety assembly for a new energy automobile cable according to claim 1, characterized in that: the first connecting hole (11) and the first connecting piece (21) are arranged in a matching way; the second connecting hole (12) and the second connecting piece (22) are arranged in a matching mode.
4. The safety assembly for a new energy automobile cable according to claim 1, characterized in that: and a resistor is connected in series between the electromagnetic coil (14) and the first connecting hole (11) or the second connecting hole (12).
5. The safety assembly for a new energy automobile cable according to claim 1, characterized in that: the first connecting hole (11), the second connecting hole (12), the first connecting piece (21) and the second connecting piece (22) are connected with a conductive cable (100) through insulated wires.
6. The safety assembly for a new energy automobile cable according to claim 5, characterized in that: and an electromagnetic shielding layer is arranged on the outer layer of the insulated wire.
7. The safety assembly for a new energy automobile cable according to claim 6, characterized in that: the electromagnetic shielding layer is connected with the first isolation cover (13) or the second isolation cover (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910091556.9A CN109754915B (en) | 2019-01-30 | 2019-01-30 | Safety assembly for new energy automobile cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910091556.9A CN109754915B (en) | 2019-01-30 | 2019-01-30 | Safety assembly for new energy automobile cable |
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| Publication Number | Publication Date |
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| CN109754915A CN109754915A (en) | 2019-05-14 |
| CN109754915B true CN109754915B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910091556.9A Active CN109754915B (en) | 2019-01-30 | 2019-01-30 | Safety assembly for new energy automobile cable |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112614619B (en) * | 2020-12-21 | 2023-06-09 | 北京康纳博力科技有限公司 | Power and signal transmission method for railway locomotive |
| CN112599298B (en) * | 2020-12-21 | 2022-06-24 | 郑州铁路职业技术学院 | Internal power and signal transmission cable of railway locomotive |
Citations (5)
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|---|---|---|---|---|
| CN202050089U (en) * | 2011-05-13 | 2011-11-23 | 福建交通职业技术学院 | Magnetic suction plug socket assembly |
| CN204706706U (en) * | 2015-06-09 | 2015-10-14 | 江西科技学院 | A kind of computer network interface jockey |
| CN204885694U (en) * | 2015-09-06 | 2015-12-16 | 卓玉兰 | A safety control that is used for socket plug or changes head |
| JP2016100106A (en) * | 2014-11-19 | 2016-05-30 | スタッフ株式会社 | Magnet type connector for dc power supply unit |
| CN206301679U (en) * | 2016-12-28 | 2017-07-04 | 东莞市松群电子科技有限公司 | A kind of superpower Anti-interference inductor |
-
2019
- 2019-01-30 CN CN201910091556.9A patent/CN109754915B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202050089U (en) * | 2011-05-13 | 2011-11-23 | 福建交通职业技术学院 | Magnetic suction plug socket assembly |
| JP2016100106A (en) * | 2014-11-19 | 2016-05-30 | スタッフ株式会社 | Magnet type connector for dc power supply unit |
| CN204706706U (en) * | 2015-06-09 | 2015-10-14 | 江西科技学院 | A kind of computer network interface jockey |
| CN204885694U (en) * | 2015-09-06 | 2015-12-16 | 卓玉兰 | A safety control that is used for socket plug or changes head |
| CN206301679U (en) * | 2016-12-28 | 2017-07-04 | 东莞市松群电子科技有限公司 | A kind of superpower Anti-interference inductor |
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