CN113131625A - Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe - Google Patents
Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe Download PDFInfo
- Publication number
- CN113131625A CN113131625A CN202110499508.0A CN202110499508A CN113131625A CN 113131625 A CN113131625 A CN 113131625A CN 202110499508 A CN202110499508 A CN 202110499508A CN 113131625 A CN113131625 A CN 113131625A
- Authority
- CN
- China
- Prior art keywords
- coil
- copper pipe
- coupling coil
- hollow copper
- coupling
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 38
- 239000010949 copper Substances 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 title claims description 5
- 230000008878 coupling Effects 0.000 claims abstract description 31
- 238000010168 coupling process Methods 0.000 claims abstract description 31
- 238000005859 coupling reaction Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000110 cooling liquid Substances 0.000 abstract description 11
- 239000004020 conductor Substances 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 5
- 230000002500 effect on skin Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 2
- 239000002826 coolant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a method for reducing the temperature of a coupling coil by using a hollow copper pipe as a material for winding the coupling coil in a magnetic coupling resonant wireless power transmission system and introducing insulating cooling liquid into the copper pipe. The device of the invention comprises: coupling coil, binding post, water pump, radiator made by the copper pipe. Due to the heat effect of the current, higher heat can be generated on the coupling coil, so that the temperature of the coil rises, and the resistance of the coil is increased due to the positive temperature coefficient of the metal resistivity, so that the electric energy loss on the coil is increased, and the energy transmission efficiency of the system is negatively influenced. The hollow copper pipe replaces the traditional solid copper wire, so that the surface area of the conductor can be increased, the loss caused by the skin effect on the conductor can be reduced, the heat dissipation capability of the coil can be enhanced after flowing insulating cooling liquid is introduced, the energy loss can be reduced, and electronic components in the peripheral circuit of the coupling coil can be protected from being influenced by high temperature. The method aims to improve the transmission capability of the wireless energy transmission system and ensure the safe and stable operation of the system.
Description
Technical Field
The invention relates to the field of wireless power transmission, in particular to a device for cooling a coupling coil by winding the coupling coil by a hollow copper pipe and introducing insulating cooling liquid into the coupling coil.
Background
The transmitting coil and the receiving coil are important components of energy coupling in a wireless energy transmission system, and most of the traditional coupling coils are formed by winding solid copper wires. In the high-frequency high-power wireless energy transmission, because of the skin effect of the solid lead coil, when alternating current is introduced into the coil, the current inside the conductor is not uniformly distributed, the current is concentrated on a thin layer on the outer surface of the coil, the closer to the surface of the conductor, the higher the current density is, the smaller the current is actually inside the conductor, the lower the utilization rate of the lead is, and as a result, the resistance of the conductor is increased; in addition, the proximity effect between the wires greatly reduces the transmission efficiency of the system, and the energy supply to the load is seriously influenced.
In the wireless energy transmission system, when the system continuously works, the resistivity of the metal conductor has a positive temperature coefficient, and the resistance of the coupling coil is increased along with the temperature increase. The problems caused by overheating of the coil can seriously affect the safe and stable operation of the system. It is therefore of interest to provide an optimized device for the above-mentioned problems.
Disclosure of Invention
The invention provides a device for wireless power transmission by adopting a hollow copper pipe as a coupling coil, a water pump is used outside to introduce cooling liquid into the copper pipe to circularly take away heat so as to reduce the temperature of the coupling coil and peripheral circuits when a system works, the problem of reduction of transmission efficiency caused by temperature rise of the coil when the coil continuously works in a wireless power transmission system is optimized, safe and efficient wireless power supply of electric energy at the transmitting side and the receiving side can be realized, and the continuous and efficient work of a power receiving end is ensured.
In order to solve the problems, the invention adopts the technical scheme that: a wireless power transmission scheme which adopts a copper pipe as a coupling coil and cools the coupling coil.
According to the scheme, the spiral hollow copper pipe is used as the coupling coil, and flowing cooling liquid is introduced to reduce the temperature of the coil so as to solve the problems.
The device comprises a coupling coil, a wiring upper terminal, a wiring lower terminal, an insulating hose, a water pump and a radiator.
The coupling coil is characterized in that: the two coils are made by winding hollow copper tubes. The coupling coil is wound into a multilayer spiral structure.
The transmitting coil and the receiving coil are horizontally aligned.
The coupling coil comprises an upper end, a copper pipe layer and a lower end tail.
And the wiring upper terminal and the wiring lower terminal are connected with an external circuit through leads.
The radiator is characterized in that a larger heat dissipation area is provided for cooling the cooling liquid.
And two ports of the hollow copper pipe coil are connected with the water pump and the radiator through an insulating hose.
The water pump and the radiator are also connected through an insulating hose. The water pump device leads the insulating cooling liquid in the water pump box into the cooling liquid from the inner wall of the lower end of the copper pipe through the insulating hose under the action of the motor, the cooling liquid at the upper end of the copper pipe flows into the radiator to be cooled, and the cooling liquid circulates in the whole device.
The invention has the following advantages: 1. the coupling coil is wound into a spiral structure by adopting a hollow copper pipe to transmit wireless electric energy, and compared with other common conductor structures with the same cross-sectional area, the coil made of the hollow copper pipe has the advantages that the effective surface area of the hollow copper pipe is larger than that of a solid copper pipe, and the skin effect is weakened to reduce energy loss in the coil. 2. Because the heat effect of electric current can produce higher heat on the coupling coil, leads to the coil temperature to rise, again because metal resistivity has the resistance increase that positive temperature coefficient leads to the coil, and then leads to the electric energy loss on the coil to increase, lets in hollow copper pipe inner wall with the coolant liquid that flows, and the heat of coupling coil can be taken away to the coolant liquid, reduces the conductor temperature and then reduces energy loss, promotes wireless power transmission system efficiency. 3. The water pump and the radiator are used for reducing the temperature of the coil and peripheral circuits, protecting electronic devices around the coil and ensuring safe and stable operation of the system.
Drawings
In order to more clearly illustrate the technical solution of the present invention, fig. 1 provides the structure and connection manner of the hollow copper tube coil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the terms "upper header", "lower header", "upper end of copper tubing", "lower end of copper tubing", and the like, are used herein to indicate a positional relationship for ease of description only, and are not intended to indicate or imply that the components or elements so referred to must be in a particular orientation, constructed or operated in a particular position, and therefore should not be considered as limiting the present invention.
Referring to fig. 1, the device of the present invention includes a coupling coil, a wiring upper terminal, a wiring lower terminal, an insulating hose, a water pump, and a heat sink.
In this embodiment, the attributes and parameters of the transmitting coil and the receiving coil are completely consistent, the coil is formed by winding a hollow copper pipe, the diameter of the hollow copper pipe is 4mm, the wall thickness of the pipe is 0.5mm, the number of turns is 5, the turn interval is 1mm, and the diameter of the coil is 300 mm.
In this embodiment, the insulating hose is made of PVC material and has a pipe diameter of 5 mm.
In the embodiment, the 385SA direct current motor is adopted for driving the water pump.
In this embodiment, the heat sink is a P-TD240 cold row made of pure aluminum.
In this embodiment, the head and tail ends of the hollow copper tube are connected with the water pump and the radiator through the insulating hose. The wiring port is connected with an external inverter and a power supply through a lead to jointly form the whole wireless power transmission system.
In this embodiment, when the system carries out wireless power transmission, start water pump and radiator, the water pump motor will be with water from the coolant liquid in the water tank through the insulating hose let in hollow copper pipe, the coolant liquid dispels the heat in the radiator again.
The invention has the advantages compared with the prior traditional wireless power transmission system that:
after the insulating cooling liquid is introduced into the hollow copper pipe, the temperature of the coil can be reduced, so that the system can run more safely and stably. Compared with the traditional solid coil, the hollow copper tube has the advantages that the skin effect is improved under high-frequency alternating current, and the heating loss of the coil is reduced.
The above-disclosed embodiments of the invention are intended to be merely illustrative of the invention. The selected embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Any equivalent substitutions, modifications, improvements and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An apparatus for wireless power transfer system efficiency enhancement and coil cooling, comprising: the water pump (1), the radiator (3), the wiring upper terminal (5), the wiring lower terminal (7), the coupling coil (6) and the insulating hoses (2, 4 and 8).
2. The coupling coil (6) according to claim 1 is of a multi-layer helical structure and is wound from a hollow copper tube.
3. According to the claim 1, the upper end of the copper pipe of the coupling coil (6) is welded with the upper terminal (5) of the connection wire, and the lower end of the copper pipe of the coupling coil (6) is welded with the lower terminal (7) of the connection wire.
4. According to the claim 2, the wiring upper terminal (5) and the wiring lower terminal (7) on the coupling coil (6) are connected with the external circuit of the wireless power transmission system through wires.
5. According to claim 1, the insulating hose (2, 4, 8) is connected to the water pump, the radiator and the coupling coil.
6. The upper end of the hollow copper pipe is fixedly connected with the right side of the radiator (3) through an insulating hose (5), and the other end of the hollow copper pipe is fixedly connected with the water pump (2) through an insulating hose (6).
7. According to the claim 3, one end of the hollow copper tube is fixedly connected with the right side of the radiator (3) through an insulating hose (5); the lower end of the hollow copper pipe is fixedly connected with a water pump (1) through an insulating hose (8); the water pump (1) is connected with the right side of the radiator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499508.0A CN113131625A (en) | 2021-05-08 | 2021-05-08 | Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499508.0A CN113131625A (en) | 2021-05-08 | 2021-05-08 | Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113131625A true CN113131625A (en) | 2021-07-16 |
Family
ID=76781149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110499508.0A Pending CN113131625A (en) | 2021-05-08 | 2021-05-08 | Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113131625A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063040A (en) * | 2017-12-28 | 2018-05-22 | 伽行科技（北京）有限公司 | A kind of transmitting coil structure of automobile wireless charging system |
| CN109802495A (en) * | 2018-12-28 | 2019-05-24 | 努比亚技术有限公司 | A kind of wireless charging emitter and wireless charging transmitter |
| CN110011427A (en) * | 2019-04-11 | 2019-07-12 | 兰州大学 | A kind of compound magnet coupled resonant type wireless power transmission coil |
| CN215267800U (en) * | 2021-05-08 | 2021-12-21 | 西华大学 | Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe |
-
2021
- 2021-05-08 CN CN202110499508.0A patent/CN113131625A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063040A (en) * | 2017-12-28 | 2018-05-22 | 伽行科技（北京）有限公司 | A kind of transmitting coil structure of automobile wireless charging system |
| CN109802495A (en) * | 2018-12-28 | 2019-05-24 | 努比亚技术有限公司 | A kind of wireless charging emitter and wireless charging transmitter |
| CN110011427A (en) * | 2019-04-11 | 2019-07-12 | 兰州大学 | A kind of compound magnet coupled resonant type wireless power transmission coil |
| CN215267800U (en) * | 2021-05-08 | 2021-12-21 | 西华大学 | Novel water-cooling wireless electric energy transmission device adopting hollow copper pipe |
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