CN211578405U - Charging pile cable - Google Patents

Abstract

A charging pile cable comprises a main wire core, a ground wire core and a signal wire core, a plurality of signal wire cores are twisted to form a signal cable core, a shielding layer and an inner protective sleeve are arranged on the outside of the signal cable core to form a signal control wire, and the main wire core , The ground wire core and the signal control wire are twisted together to form a cable core, an outer sheath is provided outside the cable core, and the main wire core includes a cooling tube, a first conductor and a first conductor arranged in sequence from the inside to the outside. Insulation layer, the ground wire core includes a second conductor and a second insulation layer arranged in order from the inside to the outside, the signal wire core includes a third conductor and a third insulation layer arranged in order from the inside to the outside, and the third conductor is arranged in the third conductor. With fiber reinforcement. The charging pile cable of the utility model can effectively control the temperature rise when the cable is running by adding a cooling pipe.

Description

Charging pile cable

technical field

The utility model relates to a charging cable for a new energy electric vehicle, in particular to a charging pile cable.

Background technique

As the country attaches great importance to the development of the new energy vehicle industry, the demand for charging piles supporting new energy vehicles is also increasing day by day. At present, the charging pile cables on the market will become stiff and not easy to bend in winter, especially in the northern region, the temperature in winter can drop below -30 ℃, which brings great inconvenience to users when charging. In addition, the maximum allowable charging current of the existing charging pile cables is mostly 250A, and the charging speed is relatively slow, and the current of more than 400A will cause the cable to heat up relatively high, which is a safety hazard. If the temperature is reduced by increasing the cable cross-section, on the one hand The production cost is increased, and on the other hand, the weight of the cable is increased, which is not conducive to the user's operation.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the defects of the prior art and provide a charging pile cable with a simple structure and convenient use.

To achieve the above purpose, the present utility model has adopted the following technical solutions:

A charging pile cable comprises a main wire core, a ground wire core and a signal wire core, a plurality of signal wire cores are twisted to form a signal cable core, a shielding layer and an inner protective sleeve are arranged on the outside of the signal cable core to form a signal control wire, and the main wire core , The ground wire core and the signal control wire are twisted together to form a cable core, an outer sheath is provided outside the cable core, and the main wire core includes a cooling tube, a first conductor and a first conductor arranged in sequence from the inside to the outside. Insulation layer, the ground wire core includes a second conductor and a second insulation layer arranged in order from the inside to the outside, the signal wire core includes a third conductor and a third insulation layer arranged in order from the inside to the outside, and the third conductor is arranged in the third conductor. With fiber reinforcement.

Preferably, a heat storage filler layer is provided outside the main wire core, the ground wire core and the signal control wire, and an outer sheath is provided outside the heat storage filler layer.

Preferably, a heat storage slow-release layer is further provided between the heat storage filler layer and the outer sheath.

Preferably, the cooling pipe is a nylon cooling pipe.

Preferably, the cabling core is wrapped with a non-woven layer, the outer sheath is a high-elastic TPE outer sheath, and the high-elastic TPE outer sheath is extruded and wrapped outside the non-woven layer.

Preferably, the first insulating layer, the second insulating layer and the third insulating layer are all high tear-resistant silicone rubber insulating layers.

Preferably, the fiber reinforcement is Kevlar fiber, the shielding layer includes an aluminum-plastic composite tape shielding layer and a tinned copper wire braided shielding layer sequentially arranged from the inside to the outside, and the inner protective sleeve is High elastic TPE inner sheath.

Preferably, the heat storage filler layer is a heat storage fiber layer.

Preferably, the heat storage slow-release layer is a polyurethane slow-release layer.

Preferably, the direction in which the main wire core, the ground wire core and the signal control wire are twisted is the left direction; the first conductor, the second conductor and the third conductor are all layered and twisted with six types of bare copper wires, The three stranding direction, the twisting direction and the wrapping direction of the non-woven layer are all leftward.

In the charging pile cable of the utility model, a cooling pipe is added in the main wire core, and cooling liquid can be injected into the cooling pipe, so that the heat generated by the cable can be introduced into the cooling pipe after being energized, and can be taken away by the cooling liquid, thereby effectively controlling This reduces the temperature increase when the cable is operating, enabling charging with a higher current.

In addition, the first insulating layer, the second insulating layer and the third insulating layer of the present invention are high tear-resistant silicone rubber insulating layers, the inner protective sleeve is a high-elasticity TPE inner sheath, and the outer sheath is a high-elasticity TPE outer sheath. , due to its strong temperature resistance and mechanical strength, it comprehensively solves the problem that the cable is not easy to bend when used in the cold northern regions; at the same time, by adding Kevlar fiber, the overall flexibility and tensile strength of the cable are effectively enhanced. Avoid cable breakage due to repeated movement.

In particular, in the present invention, a heat storage filler layer is arranged between the main wire core, the ground wire core and the signal control wire, and a part of the heat generated by the main wire core is stored in the heat storage filler layer when the power is turned on. After releasing the heat slowly, it is further provided with a heat storage and slow release layer to release the heat slowly to ensure that the temperature of the cable changes slowly, so as to ensure the flexibility and mechanical strength of the inner protective sheath and the outer sheath, and comprehensively solve the coldness of the cable in the north. It is not easy to bend in regional use, so that the mechanical strength can still be used normally in the environment of - ℃, which jointly ensures that the cable as a whole still has strong flexibility in low temperature environment, and avoids the impact of the user's use due to stiffness and not easy to bend.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the charging pile cable of the present invention.

FIG. 2 is a schematic structural diagram of Embodiment 2 of the charging pile cable of the present invention.

FIG. 3 is a schematic structural diagram of the signal control line of the present invention.

Detailed ways

The specific embodiments of the charging pile cable of the present invention are further described below with reference to the embodiments given in FIGS. 1 to 2 . The charging pile cable of the present invention is not limited to the description of the following embodiments.

A charging pile cable, including a main wire core 1, a ground wire core 2 and a signal wire core 3, a plurality of signal wire cores 3 are twisted to form a signal cable core, and a shielding layer and an inner protective sleeve 93 are arranged outside the signal cable core in turn to form a signal. The control wire 9, the main wire core 1, the ground wire core 2 and the signal control wire 9 are stranded together to form a cable core, and an outer sheath 7 is provided outside the cable core. The cooling tube 11, the first conductor 12 and the first insulating layer 13 are provided, the ground wire core 2 includes a second conductor 21 and a second insulating layer 22 arranged in sequence from the inside to the outside, and the signal wire core 3 includes a sequence from the inside to the outside. The third conductor 32 and the third insulating layer 33 are provided, and the fiber reinforcement 31 is provided in the third conductor 32 .

In the charging pile cable of the utility model, a cooling pipe is added in the main wire core, and cooling liquid can be injected into the cooling pipe, so that the heat generated by the cable can be introduced into the cooling pipe after being energized, and can be taken away by the cooling liquid, thereby effectively controlling The temperature rise when the cable is running, makes it possible to charge with a larger current, for example, more than 400A current. Further, it can also be connected to a circulating cooler, which is taken away by the cooling liquid and the circulating cooler, and the cooling speed and effect are better.

Example 1

As shown in Figures 1 and 3, an embodiment of the present invention, a flexible low-temperature resistant liquid-cooled charging pile cable, includes a main wire core 1, a ground wire core 2 and a signal wire core 3, and several signal wire cores 3 are stranded A signal cable core is formed. The signal cable core is provided with a shielding layer and an inner protective sleeve 93 in turn to form a signal control wire 9. The main wire core 1, the ground wire core 2 and the signal control wire 9 are twisted together to form a cable core. An outer sheath 7 is provided outside the cable core.

Specifically, the main wire core 1 includes a cooling tube 11 , a first conductor 12 and a first insulating layer 13 which are sequentially arranged from the inside to the outside. Preferably, the cooling pipe 11 is a nylon cooling pipe, and a nylon cooling pipe with good toughness and strong tensile and compressive capacity is used, which greatly reduces the production cost on the premise of ensuring its normal use. Preferably, the first conductor 12 is a copper conductor, preferably six types of bare copper wires are laminated and twisted outside the nylon cooling tube, and the first insulating layer 13 is a high tear-resistant silicone rubber insulating layer.

The grounding core 2 includes a second conductor 21 and a second insulating layer 22 which are sequentially arranged from the inside to the outside. Preferably, the second conductor 21 is a copper conductor, and six types of bare copper wires are layered and tightly stranded, and the second insulating layer 22 is a high tear-resistant silicone rubber insulating layer.

The signal core 3 includes a fiber reinforcing rib 31, a third conductor 32 and a third insulating layer 33 sequentially arranged from the inside to the outside. The fiber reinforcing rib 31 is arranged inside the third conductor 32, which effectively enhances the overall flexibility of the cable. , Tensile strength, to avoid breakage due to repeated movement. Preferably, the fiber reinforcement 31 is a Kevlar fiber, the third conductor 32 is a copper conductor, and six types of bare copper wires are used for layering, compressing and twisting, and the third insulating layer 33 is a high tear resistance. Silicone rubber insulation.

The plurality of signal wire cores 3 are twisted to form a signal cable core, and the signal cable core is sequentially wrapped with a shielding layer and an inner protective sleeve 93 to form a signal control wire 9 . Preferably, the shielding layer includes an aluminum-plastic composite tape shielding layer 91 and a tinned copper wire braided shielding layer 92 that are sequentially arranged from inside to outside, and the inner protective sleeve 93 is made of high-elasticity TPE (thermoplastic elastomer). jacket. The utility model adopts the double-layer shield of the combination of the aluminum-plastic composite tape shielding layer 91 and the tinned copper wire braided shielding layer 92, which reduces the impedance while improving the shielding attenuation, so that the shielding transfer impedance is less than or equal to 31mΩ/m, and the shielding attenuation is greater than or equal to 70dB. , so that the cable can achieve the ability of anti-electromagnetic interference in the whole frequency band. Obviously, a single-layer shielding structure, or a three-layer or more shielding structure can also be provided as required.

The main wire core 1, the ground wire core 2 and the signal control wire 9 are twisted together to form a cable core, the cable core is wrapped around the non-woven fabric layer 5, and the non-woven fabric layer 5 is extruded and wrapped with an outer layer. The sheath 7, the outer sheath 7 is a high-elasticity TPE outer sheath, and the high-elasticity TPE outer sheath is extruded and wrapped on the outside of the non-woven fabric layer 5 .

The inner protective sleeve 93 and the outer sheath 7 are made of high-elasticity TPE thermoplastic elastomer, which ensures that the cable as a whole still has strong flexibility in a low temperature environment, and avoids the impact of the user's use due to stiffness and not easy to bend.

In the preferred embodiment shown in FIG. 1 , the flexible low-temperature resistant liquid-cooled charging pile cable includes two main wire cores 1 , three ground wire cores 2 and three signal control wires 9 . The two main wire cores 1 are respectively used to transmit the positive and negative electrodes of the DC current, and the first conductors 12 of the two main wire cores 1 are provided with cooling pipes 11 . The three grounding wire cores 2 are respectively a main grounding wire core and two auxiliary grounding wire cores, and the cross-sectional area of the main grounding wire core is larger than that of the auxiliary grounding wire core. The three signal control lines 9 include a main signal control line 9 and two auxiliary signal control lines 9. The main signal control line 9 includes seven signal cores 3, and each auxiliary signal control line 9 includes two signal lines. Core 3. The first insulating layer 13 , the second insulating layer 22 and the third insulating layer 33 are all high tear-resistant silicone rubber insulating layers, preferably with a hardness of 70A. The inner protective sleeve 93 and the outer sheath 7 are made of high-elasticity TPE thermoplastic elastomer, and the high-tear-resistant silicone rubber insulating layer is vulcanized and extruded using a platinum vulcanization system, so that it has high insulation, high mechanical strength, stretch resistance and environmental protection. The feature of high grade ensures that the state in the -60 ℃ environment is the same as that in the normal temperature environment, and the overall bending performance of the cable is guaranteed. The main wire core 1, the ground wire core 2 and the signal control wire 9 are twisted in the left direction; the first conductor 12, the second conductor 21 and the third conductor 32 are all layered and tightened with six types of bare copper wires For twisting, the three stranding direction, the twisting direction and the wrapping direction of the non-woven fabric layer 5 are all leftward. The utility model adopts the same direction arrangement, which avoids the reverse stress of the cable during the bending process, and comprehensively improves the bending performance of the cable.

The manufacturing process of the flexible low-temperature-resistant liquid-cooled charging pile cable of the present invention will be described with reference to FIG. 1 .

Step 1: A nylon cooling tube is added to the six types of bare copper wires, which are layered and stranded, and the wire bundle direction and the twisting direction are both leftwards, and finally a first conductor 12 with a nylon cooling tube in the center is formed; The six types of bare copper wires are layered, compacted and twisted, and the stranding direction and the twisted direction are both leftward to form the second conductor 21; fiber reinforcing ribs 31 are added to the six types of bare copper wires and are layered and twisted. In combination, the stranding direction and the twisting direction are both leftward, and finally a third conductor 32 with a fiber reinforcing rib 31 in the center is formed.

Step 2: The first conductor 12, the second conductor 21, and the third conductor 32 are extruded with high tear-resistant silicone rubber to form the first insulating layer 13, the second insulating layer 22, and the third insulating layer 33, respectively, forming the main core 1 , ground core 2 and signal core 3.

Step 3: Twist several signal cores 3 to form a whole, and use aluminum-plastic composite tape wrapping + tinned copper wire braiding to form a double-layer combined shielding shielding layer on the outside, and extrude high-elasticity TPE outside the shielding layer. The inner protective sleeve 93 forms the signal control line 9, wherein the twisting direction of several signal cores 3, the wrapping direction of the aluminum-plastic composite tape shielding layer 91 and the tinned copper wire braided shielding layer 92 are all leftward.

Step 4: The main wire core 1, the ground wire core 2 and the signal control wire 9 are twisted together to form a cable core, and the twisting direction is leftward, and the non-woven layer 5 is wrapped around the outside of the cable core. The non-woven layer 5 is extruded and wrapped with a high-elastic TPE outer sheath 7, wherein the wrapping direction of the non-woven layer 5 is leftward.

Embodiment 2

As shown in Figures 2 and 3, an embodiment of the present invention, a flexible low-temperature resistant liquid-cooled charging pile cable, includes a main wire core 1, a ground wire core 2 and a signal wire core 3, and several signal wire cores 3 are stranded It constitutes a signal cable core. The signal cable core is provided with a shielding layer and an inner protective sleeve 93 in turn to form a signal control wire 9, a main wire core 1, a ground wire core 2 and a signal wire core 3. The structure, material and embodiment of the signal control wire 9 The first is the same, but the difference is that the second embodiment is further provided with a heat storage filler layer 4, and further preferably a heat storage slow-release layer 6 is also provided.

As shown in FIG. 2 , the main wire core 1 , the ground wire core 2 and the signal control wire 9 are twisted together to form a cable core. The main wire core 1 , the ground wire core 2 and the signal control wire 9 are provided with external heat storage The filler layer 4 is provided with an outer sheath 7 outside the cabled core. The heat storage filler layer 4 is filled between the main wire core 1 , the ground wire core 2 and the signal control wire 9 , or is wrapped around the main wire core 1 , the ground wire core 2 and the signal control wire 9 . The packing layer 4 is provided with an outer sheath 7 outside. In the present invention, a heat storage filler layer 4 is arranged between the main wire core 1, the ground wire core 2 and the signal control wire 9, and a part of the heat generated by the main wire core 1 is stored in the heat storage filler layer 4 when the power is turned on. After the power is turned off, the heat is released slowly to ensure that the temperature of the cable changes slowly, so as to ensure the flexibility and mechanical strength of the inner protective sleeve 93 and the outer sheath 7, and comprehensively solve the problem that the cable is not easy to bend when used in the cold northern regions.

For the cable field, since the conductor is heated when the power is turned on, it is usually necessary to avoid the high temperature of the cable to avoid potential safety hazards. Therefore, it is necessary to release the heat generated by the conductor as soon as possible. The heat is stored in the core, so that the heat is not released as soon as possible. In the present invention, the cooling pipe 11 is arranged in the main wire core 1, so that the heat generated by the conductor is taken away from the inside of the conductor through the cooling liquid, and the heat can be stored at the cable core, so that the heat generated by the main wire core 1 when energized can be stored. Part of the heat is stored in the heat storage filler layer 4, and the heat is released slowly after the power is turned off, which overcomes the technical bias in the field and solves the problem that the cable is not easy to bend when used in the cold northern region. The cooling pipe 11 and the heat storage filler The setting of layer 4 achieves the technical effect that 1+1 is greater than 2.

Further, a heat storage slow release layer 6 is also arranged between the heat storage filler layer 4 and the outer sheath 7 to reduce the release speed of the heat of the cable and prolong the time of the cable heat preservation. For those skilled in the art, it is hoped that the faster the heat release speed of the cable, the better, and the heat storage slow release layer 6 will not be set to reduce the release speed of the cable. The heat stored in layer 4 is released slowly, up to 8 hours.

In the embodiment shown in FIG. 2 , in the cabling core, a heat storage filler layer 4 is filled between the main wire core 1 , the ground wire core 2 and the signal control wire 9 , and the cabling core is wrapped around the outside There is a non-woven layer 5 , a heat storage and slow-release layer 6 is arranged outside the non-woven layer 5 , and an outer sheath 7 is arranged outside the heat storage and slow-release layer 6 . The heat storage filler layer 4 is a heat storage fiber layer, and the heat storage fiber adopts a commercially available photo fiber, which is used to make a space suit; the heat storage slow-release layer 6 is a polyurethane slow-release layer; the The outer sheath 7 is a high elastic TPE outer sheath. Obviously, other materials can also be used for the heat storage filler layer 4 and the heat storage slow release layer 6 .

In this embodiment, a heat storage filler layer 4 is arranged between the main wire core 1 , the ground wire core 2 and the signal control wire 9 , and a part of the heat generated by the main wire core 1 is stored in the heat storage filler layer 4 when the power is turned on. After the power is turned off, the heat is released slowly, and the heat storage and slow release layer 6 is further provided to release the heat slowly, so as to ensure that the temperature of the cable changes slowly, so as to ensure the flexibility and mechanical strength of the inner protective sheath 93 and the outer sheath 7, Comprehensively solve the problem that the cable is not easy to bend when used in the cold area of the north, so that it can still use the mechanical strength normally in the environment of -60 °C, which jointly ensures that the cable as a whole still has strong flexibility in the low temperature environment, and avoids being difficult to bend due to stiffness. affect user usage.

The manufacturing process of the flexible low-temperature-resistant liquid-cooled charging pile cable of this embodiment is the same as that of the first embodiment, and the difference lies in step 4:

Step 4: Fill the gap between the main wire core 1, the ground wire core 2 and the signal control wire 9 with heat storage fibers, wrap the non-woven fabric layer 5 on the outside of the cable core, and extrude the non-woven fabric layer 5 The outer sheath 7 of high elastic TPE is wrapped, wherein the wrapping direction of the non-woven fabric layer 5 is leftward; For the packing layer 4, an outer sheath 7 of high elasticity TPE is extruded and wrapped around the thermal storage packing layer 4, and the wrapping direction of the thermal storage packing layer 4 is leftward.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. A charging pile cable, comprising a main wire core (1), a ground wire core (2) and a signal wire core (3). A signal control line (9) is formed by a shielding layer and an inner protective sleeve (93), and the main wire core (1), the ground wire core (2) and the signal control wire (9) are twisted together to form a cable core. An outer sheath (7) is provided outside the core, which is characterized in that: The main wire core (1) includes a cooling tube (11), a first conductor (12) and a first insulating layer (13) arranged in sequence from the inside to the outside, and the ground wire core (2) includes a cooling tube (11), a first conductor (12) and a first insulating layer (13) arranged in sequence from the inside to the outside. The second conductor (21) and the second insulating layer (22), the signal core (3) includes the third conductor (32) and the third insulating layer (33) arranged in sequence from the inside to the outside, and the third conductor ( 32) A fiber reinforcing rib (31) is arranged inside. 2. The charging pile cable according to claim 1, characterized in that: the main wire core (1), the ground wire core (2) and the signal control wire (9) are provided with a heat storage filler layer (4), so All outer sheaths (7) are provided outside the heat storage packing layer (4). 3. The charging pile cable according to claim 2, characterized in that a heat storage slow-release layer (6) is further provided between the heat storage filler layer (4) and the outer sheath (7). 4. The charging pile cable according to claim 1, wherein the cooling pipe (11) is a nylon cooling pipe. 5 . The charging pile cable according to claim 1 , wherein the cable core is wrapped with a non-woven layer ( 5 ), and the outer sheath ( 7 ) is a high-elastic TPE outer sheath. 6 . , the high elastic TPE outer sheath is extruded and wrapped on the outside of the non-woven fabric layer (5). 6. The charging pile cable according to claim 1, wherein the first insulating layer (13), the second insulating layer (22) and the third insulating layer (33) are all high tear-resistant silicone rubber insulation Floor. 7 . The charging pile cable according to claim 1 , wherein the fiber reinforcement ( 31 ) is Kevlar fiber, and the shielding layer comprises aluminum-plastic composite tape shielding arranged sequentially from inside to outside. 8 . layer (91) and tinned copper wire braided shielding layer (92), and the inner protective sleeve (93) is a high elastic TPE inner sheath. 8. The charging pile cable according to claim 2, wherein the heat storage filler layer (4) is a heat storage fiber layer. 9 . The charging pile cable according to claim 3 , wherein the heat storage slow-release layer ( 6 ) is a polyurethane slow-release layer. 10 . 10. The charging pile cable according to claim 5, characterized in that: the direction in which the main wire core (1), the ground wire core (2) and the signal control wire (9) are twisted is the left direction; the first The conductor (12), the second conductor (21) and the third conductor (32) are all made of six types of bare copper wires, which are layered and tightly stranded, and the three stranding directions, the twisting directions and the non-woven fabric layer (5) The wrapping direction is left.

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