阅读说明：本技术 一种自动冷却的直流快充电缆 (Automatic direct current of refrigerated fills cable soon ) 是由 梁明春 程东旭 郑从相 于 2018-08-07 设计创作，主要内容包括：本发明提供的一种自动冷却的直流快充电缆，该电缆中设置的感温线可检测动力线的工作温度，当所述工作温度偏高时，可从充电桩中往冷却层注入冷却液以实现自动冷却电缆的功能；所述冷却层内层及冷却层外层的设计防止冷却液的泄漏对电缆造成巨大影响；该电缆的动力线线芯为铜包铝线芯，使用该种线芯减轻整体电缆的重量；另外控制线绝缘层外绕包有镀锡铜丝编织的屏蔽层可避免信号干扰和电气误操作，保证信号传输的稳定性。(According to the automatic cooling direct-current quick-charging cable, the temperature sensing line arranged in the cable can detect the working temperature of the power line, and when the working temperature is higher, cooling liquid can be injected into the cooling layer from the charging pile to realize the function of automatically cooling the cable; the design of the inner layer and the outer layer of the cooling layer prevents the leakage of cooling liquid from causing great influence on the cable; the power wire core of the cable is a copper-clad aluminum wire core, and the weight of the whole cable is reduced by using the power wire core; in addition, the shielding layer braided by the tinned copper wire is wrapped outside the control wire insulating layer, so that signal interference and electrical misoperation can be avoided, and the stability of signal transmission is ensured.)

1. An automatically-cooled direct-current quick-charging cable is characterized by comprising:

the power lines sequentially comprise a power line wire core, a power line insulating layer and a cooling layer from inside to outside;

the auxiliary power line comprises an auxiliary power line core and an auxiliary power line insulating layer from inside to outside in sequence;

the control line comprises a plurality of control line cores, a control line insulating layer, a control line group wrapping tape layer, a control line group shielding layer and an inner sheath from inside to outside in sequence;

the ground wire comprises a ground wire core and a ground wire insulating layer in sequence from inside to outside;

the two temperature sensing wires are respectively arranged between the insulating layers and the cooling layers of the two power wires; and

the cable outer layer wraps the two power lines, the two auxiliary power lines, the control line and the ground line and sequentially comprises a wrapping layer and an outer sheath layer from inside to outside.

2. An automatically-cooled dc fast-charging cable according to claim 1, wherein said cooling layer comprises an inner cooling layer and an outer cooling layer, and a cooling liquid for charging pile is injected from the inner cooling layer and flows through the outer cooling layer to be recycled to the charging pile, thereby forming a circulating cooling loop.

3. The self-cooling direct current quick charging cable according to claim 1, wherein the cooling layer comprises at least two cooling liquid cavities, and the cooling liquid of a charging pile is injected from one cooling liquid cavity, flows through the other cooling liquid cavity and is recycled to the charging pile to form a circulating cooling loop.

4. An automatically-cooled dc fast-charging cable according to claim 1, wherein said cooling layer is a flexible metal layer.

5. The automatically-cooled direct-current quick-charging cable according to claim 1, wherein the power line core is a copper-clad aluminum core.

6. An automatically cooled dc fast charging cable according to claim 1, wherein said temperature sensing line is used to detect the temperature of said power line.

7. The automatically-cooled direct-current quick-charging cable according to claim 1, wherein gaps formed between the outer layer of the cable and the two power lines, the two auxiliary power lines, the control line and the ground line are filled with polypropylene ropes.

8. The automatically-cooled direct-current quick-charging cable according to claim 1, wherein the control wire group shielding layer is braided by tinned copper wires, and the braiding density is not less than 85%.

9. An automatically-cooled dc fast-charging cable according to claim 2, wherein a predetermined gap is provided between the inner layer of the cooling layer and the outer layer of the cooling layer.

10. An automatically cooled dc fast fill cable according to claim 3, wherein said coolant cavities have a predetermined gap therebetween.

Technical Field

The invention relates to a cable, in particular to an automatic-cooling direct-current quick-charging cable.

Background

With the rapid development of the electric automobile industry, the charging requirements of electric automobiles are also increased, in particular to the field of rapid charging, a charging cable in the field generally comprises a power line, a control line, a ground line and a power supply auxiliary line, when the cable performs rapid charging, an overheating phenomenon is easily generated due to large current passing through the cable, and certain influence is exerted on the service life and safety of the cable. In view of the above disadvantages, there is a need for improvements in the prior art.

Disclosure of Invention

The invention aims to provide an automatically-cooled direct-current quick-charging cable which is automatically cooled, prevents leakage, has high flexibility and stable signal transmission and is portable to use.

The invention provides an automatically-cooled direct-current quick-charging cable which is used for connecting an electric automobile charging pile and an electric automobile and providing electric energy for the electric automobile. This self-cooling's direct current fills cable soon includes: the power lines sequentially comprise a power line wire core, a power line insulating layer and a cooling layer from inside to outside; the auxiliary power line comprises an auxiliary power line core and an auxiliary power line insulating layer from inside to outside in sequence; the control line comprises a plurality of control line cores, a control line insulating layer, a control line group wrapping tape layer, a control line group shielding layer and an inner sheath from inside to outside in sequence; the ground wire comprises a ground wire core and a ground wire insulating layer in sequence from inside to outside; the two temperature sensing wires are respectively arranged between the insulating layers and the cooling layers of the two power wires; the cable outer layer wraps the two power lines, the two auxiliary power lines, the control line and the ground line and sequentially comprises a wrapping layer and an outer sheath layer from inside to outside.

Preferably, the cooling layer comprises a cooling layer inner layer and a cooling layer outer layer, and a cooling liquid of the charging pile is injected from the cooling layer inner layer, flows through the cooling layer outer layer and is recycled into the charging pile to form a circulating cooling loop.

The cooling layer comprises at least two cooling liquid cavities, and the cooling liquid of one charging pile flows into the charging pile from one cooling liquid cavity and is recycled to the charging pile through the other cooling liquid cavity to form a circulating cooling loop.

Preferably, the cooling layer is a flexible metal layer.

Preferably, the power line wire core is a copper-clad aluminum wire core.

Preferably, the temperature sensing line is used for detecting the temperature of the power line.

Preferably, the gaps formed between the outer layer of the cable and the two power lines, the two auxiliary power lines, the control line and the ground line are filled with polypropylene ropes.

Preferably, the control wire group shielding layer is braided by a tinned copper wire, and the braiding density is not less than 85%.

Preferably, a preset gap is formed between the inner layer and the outer layer of the cooling layer, and the gap is used for preventing the metal from expanding with heat and contracting with cold to damage the cooling layer and playing a role in protecting the cooling layer from leakage of cooling liquid.

Preferably, a predetermined gap is formed between the cooling liquid cavities, and the gap is used for preventing the cooling layer from being damaged by metal thermal expansion and contraction, so that the leakage-proof effect of the cooling liquid of the cooling layer is protected.

According to the automatic cooling direct-current quick-charging cable, the temperature sensing line arranged in the cable can detect the working temperature of the power line, and when the working temperature is higher, cooling liquid can be injected into the cooling layer from the charging pile to form circulating cooling so as to realize the function of automatically cooling the cable; the power wire core of the cable is a copper clad aluminum wire core, and the weight of the whole cable is reduced by using the power wire core; in addition, the shielding layer braided by wrapping the tin-plated copper wire outside the control wire insulating layer can avoid signal interference and electrical misoperation, and the stability of signal transmission is ensured.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an automatically-cooled DC quick-charging cable provided by the present invention;

fig. 2 is a schematic structural diagram of the cooling layer 13 of the automatically-cooled dc quick-charging cable in fig. 1 according to the first embodiment of the present invention;

fig. 3 is a schematic structural diagram of the cooling layer 23 of the automatically-cooled dc quick-charging cable in fig. 1 according to the first embodiment of the present invention;

fig. 4 is a schematic structural diagram of the cooling layer 13 of the automatically-cooled dc quick-charging cable in fig. 1 according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of the cooling layer 23 of the automatically-cooled dc quick-charging cable in fig. 1 according to a second embodiment of the present invention.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, shall fall within the scope of the present invention.

Referring to fig. 1, the automatically-cooled direct-current quick-charging cable provided by the invention is used for connecting an electric vehicle charging pile and an electric vehicle and supplying electric energy to the electric vehicle. This electric automobile direct current fills cable soon includes: the power line comprises a power line 1, a power line 2, an auxiliary power line 3, an auxiliary power line 4, a ground wire 5, a control line 6, a temperature sensing line 9, a cable outer layer 7 and a filling layer 8 between the cable outer layer 7 and the power line 1, the power line 2, the auxiliary power line 3, the auxiliary power line 4, the ground wire 5 and the control line 6.

The two power lines 1 and 2 sequentially comprise power line wire cores 11 and 21, power line insulating layers 12 and 22 and cooling layers 13 and 23 from inside to outside; the two temperature sensing wires 9 are respectively arranged between the insulating layer 12 and the cooling layer 13 and between the insulating layer 22 and the cooling layer 23; the two auxiliary power lines 3 and 4 sequentially comprise auxiliary power line cores 31 and 41 and auxiliary power line insulating layers 32 and 42 from inside to outside; the ground wire 5 sequentially comprises a ground wire core 51 and a ground wire insulating layer 52 from inside to outside; the control wire 6 sequentially comprises two control wire cores 61 and 62, control wire insulating layers 611 and 621, a control wire group belt layer 63, a control wire group shielding layer 64 and an inner sheath 65 from inside to outside.

The outer layer 7 of the cable in the cable wraps the power line 1, the power line 2, the auxiliary power line 3, the auxiliary power line 4, the ground wire 5 and the control line 6, the outer layer 7 of the cable sequentially comprises a band layer 71 and an outer sheath layer 72 from inside to outside, the band layer 71 is made of non-woven fabrics, and the band layer increases the flexibility of the cable.

Referring to fig. 2 and 3, in a first embodiment of the present invention, the cooling layers 13 and 23 include a cooling layer inner layer 131 and 231 and a cooling layer outer layer 133 and 233, and a predetermined gap 132 and 232 is formed between the cooling layer inner layer and the cooling layer outer layer, and the gap is used for preventing the cooling layer from being damaged due to thermal expansion and contraction; in cooperation with the temperature sensing line 9 in fig. 1, when the temperature sensing line detects that the working temperatures of the power lines 1 and 2 are higher, the automobile charging pile automatically injects the cooling liquid into the cooling layer inner layer 131, the cooling liquid cools the power lines through the cooling layer inner layer 131, and then the cooling liquid flows through the cooling layer outer layer 133 after passing through the charging connector and is recovered to the automobile charging pile to realize the circulating cooling function of the cable.

In this embodiment, the inner layers 131 and 231 and the outer layers 133 and 233 of the cooling layer are flexible metal layers, which can improve the tensile strength of the cable, and the combination gap of the two layers prevents the cooling layer from being damaged by the expansion caused by heat and contraction caused by cold of the metal to cause the leakage of the cooling liquid, thereby protecting the normal operation of the cable.

In this embodiment, the core of the power line 1, 2 is a copper clad aluminum core, which can reduce the weight of the cable and enhance the practicability of the cable.

In this embodiment, the gaps formed between the cable outer layer 7 and the power lines 1, 2, 3, 4, 5 and 6 are filled with PP cords to form a filling layer 8, and the polypropylene cords have the advantages of high strength and tensile resistance, so as to improve the tensile strength of the cable.

The control wire group shielding layer 64 is woven by tinned copper wires, the weaving density is not less than 85%, interference and electrical misoperation of the power wires and the outside on the control wires can be prevented, and the stability of signal transmission is ensured.

The power line insulating layer 12, the power line insulating layer 22, the auxiliary power line insulating layer 32, the auxiliary power line insulating layer 42, the ground wire insulating layer 52, the control line insulating layer 62, the inner sheath layer and the outer sheath layer are all made of 125 ℃ resistant irradiation cross-linked thermoplastic elastomer (TPE), so that the cable is soft and elastic and can resist 125 ℃ high temperature.

In addition, referring to fig. 4 and 5, the present invention further provides a second embodiment, in this embodiment, the cooling layer 13, 23, the cooling layer 13 includes cooling liquid cavities 134, 135, 136 and 137, the cooling layer 23 includes cooling liquid cavities 234, 235, 236 and 237, and predetermined gaps 138, 238 are reserved between the cooling liquid cavities, and the gaps are used for preventing the cooling layer from being damaged due to the expansion and contraction of the metal; in cooperation with the temperature sensing line 9 in fig. 1, when the working temperatures of the power lines 1 and 2 measured by the temperature sensing line are higher, the automobile charging pile automatically injects the cooling liquid into the cooling liquid cavities 134, 135, 234 and 235 of the cooling layer 13 and the cooling layer 23, the cooling liquid cools the power lines through the cooling liquid cavities 134, 135, 234 and 235, and then the cooling liquid flows through the cooling liquid cavities 136, 137, 236 and 237 after passing through the charging connector and is recycled to the automobile charging pile to realize the cable circulation cooling function

The automatic cooling direct-current quick-charging cable provided by the invention has the function of automatically circularly cooling the cable, and also has the anti-leakage protection function, and the cable has high flexibility, stable signal transmission and convenient use, and is the development trend of a new generation of automobile charging cables.

The above disclosure is only one preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is defined by the claims and their equivalents.