CN214705555U - High-power liquid cooling charging wire for new energy automobile that can dispel heat - Google Patents

Abstract

The utility model discloses a high-power liquid cooling can heat dissipation charging wire for new energy automobile, the utility model relates to a new energy automobile technical field, including the sheath, the inside symmetric connection of sheath has two sets of anodal heart yearn subassemblies, two sets of negative pole heart yearn subassemblies and two sets of signal line groups, the internal surface of sheath is connected with first band, the outside of each set of signal line group all is connected with the aluminium foil shielding layer, divide into 8 core owner heart yearns by 2 core owner heart yearns through the power line, anodal 4 cores promptly, negative pole 4 cores, 1 liquid cooling pipe is shared to every 2 heart yearns, the contact ratio of heart yearn surface and liquid cooling pipe has been increased, the joule heat energy that produces in the messenger conductor is more and timely transmitted to the liquid cooling circulating pipe, thereby make the temperature rise of cable reduce, can pass through bigger electric current, the rated load electric current of this money line is 2.5~3.5 times of conventional non-liquid cooling line; adopt the liquid cooling pipe of same specification, material in this scheme charging wire, the workable assembly, technical requirement is low.

Description

High-power liquid cooling charging wire for new energy automobile that can dispel heat

Technical Field

The utility model relates to a new energy automobile technical field specifically is a charging wire for high-power liquid cooling new energy automobile can dispel heat.

Background

In the development process of the new energy automobile, the bottleneck that the charging time is too long and the requirements of customers are difficult to meet is met. In order to shorten the charging time, high-power charging is needed, and the high-power charging puts higher requirements on the current carrying capacity of a charging cable;

the traditional method for improving the current carrying capacity of the cable is to reduce the self-heating of the cable by adopting a large-size conductor with smaller resistance. The adoption of large-size conductors not only has high cost, but also has heavy weight, large size and difficult use. The scheme of adopting the large-specification conductor only solves the problem of low-stage high-power charging of current-carrying 250A and below, the development of the high-power charging of 250A and above is hindered by the self weight and the size of a cable, the charging time of the charging wire of the current-carrying 250A and below is still in a larger difference compared with the oiling time of the traditional fuel automobile, and the requirement of the large automobile flow field for quick charging of customers is difficult to meet.

The high-power liquid cooling charging line adopts a passive heat dissipation mode of circulating cooling liquid, and can effectively reduce the temperature rise of the cable. The aim of overlarge current of a small-size conductor can be achieved.

Therefore, we provide a charging wire for a high-power liquid-cooling heat-radiating new energy automobile

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a charging wire for high-power liquid cooling new energy automobile can dispel heat has solved the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a charging wire for a high-power liquid-cooled heat-radiating new energy automobile comprises a sheath, wherein two groups of positive core wire assemblies, two groups of negative core wire assemblies and two groups of signal wire groups are symmetrically connected to the inside of the sheath, a first wrapping belt is connected to the inner surface of the sheath, an aluminum foil shielding layer is connected to the outside of each group of signal wire groups, and a first filling layer is connected to the inside of the first wrapping belt and the outside of each group of positive core wire assemblies, each group of negative core wire assemblies and each group of aluminum foil shielding layer;

the positive core wire assembly comprises two groups of positive core wires and a second wrapping tape, a liquid cooling water inlet pipe is connected to the position, located in the interior of the second wrapping tape and attached to the two groups of positive core wires, a first signal wire is connected to the attachment position of each group of positive core wires and the liquid cooling water inlet pipe, and a second filling layer is connected to the position, located in the interior of the second wrapping tape and attached to the two groups of positive core wires, the liquid cooling water inlet pipe and the two groups of first signal wires;

the negative pole heart yearn subassembly includes two sets of negative pole heart yearns and third band, the inside in third band and the position that is located two sets of negative pole heart yearns and laminates mutually is connected with the liquid cooling outlet pipe, every group the negative pole heart yearn all is connected with the second signal line with the laminating department of liquid cooling outlet pipe, the inside in third band and the external connection that is located two sets of negative pole heart yearns, liquid cooling outlet pipe and two sets of second signal lines have the third filling layer.

Preferably, the positive core wire comprises a positive core wire conductor and a positive core wire insulating layer, the negative core wire comprises a negative core wire conductor and a negative core wire insulating layer, the positive core wire conductor and the negative core wire conductor are both made of 6 th-class stranded soft conductors, and the positive core wire insulating layer and the negative core wire insulating layer are both made of cross-linked polyolefin.

Preferably, the sheath is made of high thermal conductivity TPU.

Preferably, the first filling layer, the second filling layer and the third filling layer are all made of graphene fiber woven cloth.

Preferably, the first wrapping tape, the second wrapping tape and the third wrapping tape are all made of heat conduction graphene non-woven fabrics.

Advantageous effects

The utility model provides a high-power liquid cooling charging wire for new energy automobile that can dispel heat. Compared with the prior art, the method has the following beneficial effects:

1. a charging wire for a high-power liquid-cooled heat-radiating new energy automobile is characterized in that a power wire is divided into 8 main core wires, namely 4 cores of a positive electrode and 4 cores of a negative electrode, by 2 main core wires, each 2 core wires share 1 liquid-cooled tube, the contact proportion of the outer surface of each core wire and the liquid-cooled tube is increased, more Joule heat energy generated in a conductor is transmitted to the liquid-cooled circulating tube in time, the temperature rise of a cable is reduced, higher current can pass through the cable, and the rated load current of the cable is 2.5-3.5 times that of a conventional non-liquid-cooled wire; adopt the liquid cooling pipe of same specification, material in this scheme charging wire, the workable assembly, technical requirement is low.

2. A high-power liquid-cooled radiating charging wire for a new energy automobile adopts a compound twisting structure through a cable core structure, and is twisted in two steps, so that the stability of the cable core is improved, the processing difficulty caused by the increase of the cable core is reduced, in addition, the compound twisting structure of the cable core is beneficial to increasing the flexibility of a finished product wire, and the bending resistance of the cable is improved; and graphene fiber woven cloth twisted filling strips with good thermal conductivity and flexibility are adopted between cable cores. When the cable passes through a large current, the heating energy of the conductor can be more quickly transmitted to the liquid cooling pipe with lower temperature through heat conduction filling, and the effect of reducing temperature rise is achieved. The cable core band adopts heat conduction graphite alkene non-woven fabrics, and the sheath adopts high heat conduction TPU, in time gives off the air with the heat in the cable core outside. Current tests show that the temperature difference between the conductor and the sheath is 15 + -5 deg.c when the cable of this solution is in operation, compared to 40 + -5 deg.c for conventional cables.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the positive core wire assembly of the present invention;

fig. 3 is the structure diagram of the negative core wire assembly of the present invention.

In the figure: 1. a sheath; 2. a positive core wire assembly; 21. a positive electrode core wire; 211. a positive core conductor; 212. a positive core wire insulating layer; 22. a liquid cooling water inlet pipe; 23. a first signal line; 24. a second filling layer; 25. a second wrapping tape; 3. a negative core wire assembly; 31. a negative core wire; 311. a negative core conductor; 312. a negative core wire insulating layer; 32. a liquid cooling water outlet pipe; 33. a second signal line; 34. a third filling layer; 35. a third wrapping tape; 4. a signal line group; 5. an aluminum foil shielding layer; 6. a first filling layer; 7. a first strap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a high-power liquid cooling charging wire for new energy automobile that can dispel heat, including sheath 1, the inside symmetric connection of sheath 1 has two sets of anodal heart yearn subassemblies 2, two sets of negative pole heart yearn subassemblies 3 and two sets of signal group 4, the internal surface connection of sheath 1 has first envelope 7, the outside of every group signal group 4 all is connected with aluminium foil shielding layer 5, the inside of first envelope 7 just is located every anodal heart yearn subassembly 2 of group, the external connection of every negative pole heart yearn subassembly 3 of group and every group aluminium foil shielding layer 5 has first filling layer 6, sheath 1 adopts high heat conduction TPU to make, first filling layer 6, second filling layer 24 and third filling layer 34 all adopt graphite alkene fibre weaving cloth to make, first envelope 7, second envelope 25 and third envelope 35 all adopt heat conduction graphite alkene non-woven fabrics to make.

Referring to fig. 2-3, the positive core wire assembly 2 includes two sets of positive core wires 21 and a second wrapping band 25, a liquid cooling water inlet pipe 22 is connected to the position inside the second wrapping band 25 and located at the position where the two sets of positive core wires 21 are attached to each other, a first signal line 23 is connected to the position where each set of positive core wires 21 is attached to the liquid cooling water inlet pipe 22, a second filling layer 24 is connected to the position inside the second wrapping band 25 and located at the positions outside the two sets of positive core wires 21, the liquid cooling water inlet pipe 22 and the two sets of first signal lines 23, the negative core wire assembly 3 includes two sets of negative core wires 31 and a third wrapping band 35, a liquid cooling water outlet pipe 32 is connected to the position inside the third wrapping band 35 and located at the position where the two sets of negative core wires 31 are attached to each other, a second signal line 33 is connected to the position where each set of negative core wires 31 is attached to the liquid cooling water outlet pipe 32, a third filling layer 34 is connected to the position inside the third wrapping band 35 and located at the positions outside the two sets of negative core wires 31, the liquid cooling water outlet pipe 32 and the second signal lines 33, the positive core wire 21 comprises a positive core wire conductor 211 and a positive core wire insulation layer 212, the negative core wire 31 comprises a negative core wire conductor 311 and a negative core wire insulation layer 312, the positive core wire conductor 211 and the negative core wire conductor 311 are both made of type 6 stranded soft conductors, and the positive core wire insulation layer 212 and the negative core wire insulation layer 312 are both made of cross-linked polyolefin.

When in use, the power line is divided into 8 main core wires from 2 main core wires, namely four groups of positive core wires 21 and four groups of negative core wires 31, each two groups of positive core wires 21 share one group of liquid cooling water inlet pipe 22, each two groups of negative core wires 31 share one group of liquid cooling water outlet pipe 32, the contact proportion of the outer surface of the core wires and the liquid cooling pipes is increased, a second filling layer 24 is filled outside the two groups of positive core wires 21, the liquid cooling water inlet pipes 22 and the two groups of first signal wires 23, a third filling layer 34 is filled outside the two groups of negative core wires 31, the liquid cooling water outlet pipes 32 and the two groups of second signal wires 33, the two groups of positive core wires 2 and the two groups of negative core wires 3 are twisted with the ground wire and other signal control wires in the same S direction according to the cable core arrangement diagram, the pitch is 15 times the strand outer diameter. And finally, winding a first wrapping band 7 of the heat-conducting graphene non-woven fabric structure outside the cable core. Liquid cooling inlet tube 22 in two sets of anodal heart yearn subassemblies 2 with fill electric pile liquid cooling circulation system water inlet and be connected, liquid cooling outlet pipe 32 in two sets of negative pole heart yearn subassemblies 3 with fill electric pile liquid cooling circulation system delivery port and be connected, form two sets of by the anodal cooling circulation system to the power line negative pole of power line in the cable, with more and timely transmission to the liquid cooling circulation pipe of the joule heat energy that produces in every anodal heart yearn conductor 211 of group and every negative pole heart yearn conductor 311 of group to make the temperature rise of cable reduce.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a high-power liquid cooling charging wire for new energy automobile that can dispel heat, includes sheath (1), its characterized in that: the inner part of the sheath (1) is symmetrically connected with two groups of positive core wire assemblies (2), two groups of negative core wire assemblies (3) and two groups of signal wire sets (4), the inner surface of the sheath (1) is connected with a first wrapping tape (7), the outer part of each group of signal wire sets (4) is connected with an aluminum foil shielding layer (5), and the inner part of the first wrapping tape (7) and the outer parts of each group of positive core wire assemblies (2), each group of negative core wire assemblies (3) and each group of aluminum foil shielding layer (5) are connected with a first filling layer (6);

the positive core wire assembly (2) comprises two groups of positive core wires (21) and a second wrapping tape (25), a liquid cooling water inlet pipe (22) is connected to the position, located inside the second wrapping tape (25) and attached to the two groups of positive core wires (21), a first signal wire (23) is connected to the attachment position of each group of positive core wires (21) and the liquid cooling water inlet pipe (22), and a second filling layer (24) is connected to the outside, located inside the second wrapping tape (25) and located outside the two groups of positive core wires (21), the liquid cooling water inlet pipe (22) and the two groups of first signal wires (23);

negative pole heart yearn subassembly (3) are including two sets of negative pole heart yearns (31) and third band (35), the inside of third band (35) and the position that is located two sets of negative pole heart yearns (31) and laminates mutually is connected with liquid cooling outlet pipe (32), every group negative pole heart yearn (31) all are connected with second signal line (33) with the laminating department of liquid cooling outlet pipe (32), the outside connection that the inside of third band (35) just is located two sets of negative pole heart yearns (31), liquid cooling outlet pipe (32) and two sets of second signal line (33) has third filling layer (34).

2. The charging wire for the high-power liquid-cooled heat-radiating new energy automobile as claimed in claim 1, wherein: anodal heart yearn (21) are including anodal heart yearn conductor (211) and anodal core insulating layer (212), negative pole heart yearn (31) are including negative pole heart yearn conductor (311) and negative pole heart yearn insulating layer (312), anodal heart yearn conductor (211) and negative pole heart yearn conductor (311) all adopt 6 th class transposition soft conductor to make, anodal core insulating layer (212) and negative pole heart yearn insulating layer (312) all adopt crosslinked polyolefin to make.

3. The charging wire for the high-power liquid-cooled heat-radiating new energy automobile as claimed in claim 1, wherein: the sheath (1) is made of high-thermal-conductivity TPU.

4. The charging wire for the high-power liquid-cooled heat-radiating new energy automobile as claimed in claim 1, wherein: the first filling layer (6), the second filling layer (24) and the third filling layer (34) are all made of graphene fiber woven cloth.

5. The charging wire for the high-power liquid-cooled heat-radiating new energy automobile as claimed in claim 1, wherein: the first wrapping tape (7), the second wrapping tape (25) and the third wrapping tape (35) are all made of heat-conducting graphene non-woven fabrics.

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