New energy high-voltage automobile cable

Abstract

According to the new energy high-voltage automobile cable provided by the utility model, the high-temperature-resistant characteristic of the TPE insulating layer is utilized, so that the high-temperature-resistant performance inside the cable is improved while electrical insulation is realized; the outermost layer of the cable body is provided with the silicone rubber sheath layer with high temperature resistance and aging resistance, and the filling groove in the silicone rubber sheath layer is filled with the heat insulation filler, so that stable high-temperature protection is provided for the cable, and the heat insulation performance of the cable is enhanced at the same time; therefore, the conduction of external heat to the inside of the cable body is effectively slowed down, and the influence of external high temperature on the cable is weakened, thereby ensuring that the cable can still maintain good electrical performance and mechanical strength in a high-temperature working environment. Meanwhile, the arrangement of the metal net braid layer and the aluminum foil shielding layer jointly forms a strong electromagnetic shielding system, the invasion of external high-frequency electromagnetic waves and low-frequency electric fields can be effectively blocked, the interference problem of the cable in a complex electromagnetic environment is greatly reduced, and the definition and the stability of signal transmission of the core wire conductor are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable manufacturing technical field especially is related to a new energy high -pressure automobile cable. BACKGROUND

[0002] With the rapid development of new energy automobile industry, the performance requirement of high -voltage cable is also higher and higher. New energy automobile is internally provided with a large number of electrical equipment, and these equipment is connected with each other through complex cable network, and a huge power and signal transmission system is formed. The cable used in new energy automobile is mostly high -voltage cable, due to the limited space, the high -voltage cable and equipment are often very compact in arrangement, and the high -voltage cable needs to work in the limited wiring space, which enhances the interaction between cables and between cables and other equipment, and the electromagnetic environment is complex, thereby increasing the risk of electromagnetic interference, affecting the transmission quality of cable signal, and further reducing the performance and safety of the whole vehicle.

[0003] Meanwhile, the high -voltage cable needs to bear the load of large current and high voltage when being used, and generates certain heat. The battery, motor and other components in the wiring space generate a large amount of heat when running. These heat not only increases the temperature inside the vehicle, but also makes the high -voltage cable often work in a high -temperature environment, which easily affects the electrical performance of the high -voltage cable.

[0004] Therefore, it is necessary to provide an automobile cable with strong anti-interference ability and high -temperature resistance, which can normally operate in a high -temperature and electromagnetic interference environment. UTILITY MODEL CONTENTS

[0005] In view of the technical problems that the electromagnetic environment is complex, electromagnetic interference is large and the working temperature is high when the prior art is used in automobile cable because of many devices in the automobile, the utility model provides a new energy high -voltage automobile cable.

[0006] A new energy high -voltage automobile cable, including a cable body and a protective sleeve tightly wrapped outside the cable body, the cable body includes a core conductor, the core conductor is tightly wrapped by a TPE insulation layer outside, the core conductor is regularly stranded by several oxygen-free copper wires, the protective sleeve includes a metal mesh braid layer, an aluminum foil shielding layer, a polyester film layer and a silicone rubber sheath layer arranged in turn along the direction away from the cable body, the silicone rubber sheath layer is provided with a plurality of filling grooves, and the filling grooves are provided with heat insulation fillers.

[0007] Further, the silicone rubber sheath layer comprises a silicone rubber outer layer, a silicone rubber inner layer and a plurality of silicone rubber support plates arranged along the length direction of the cable body; the silicone rubber inner layer is precisely wrapped outside the polyester film layer, the silicone rubber outer layer is sleeved outside the silicone rubber inner layer, and the silicone rubber support plates are arranged between the silicone rubber outer layer and the silicone rubber inner layer, and adjacent silicone rubber support plates form the filling groove.

[0008] Further, the silicone rubber sheath layer comprises a silicone rubber outer layer and a silicone rubber inner layer; the silicone rubber inner layer is precisely wrapped outside the polyester film layer, the silicone rubber outer layer is sleeved outside the silicone rubber inner layer, and the filling groove is formed between the silicone rubber outer layer and the silicone rubber inner layer.

[0009] Further, the thickness of the silicone rubber outer layer is greater than or equal to the thickness of the silicone rubber inner layer.

[0010] Further, the heat insulation filler comprises but is not limited to any one of rock wool, glass fiber and basalt fiber.

[0011] Further, the metal mesh braid layer is woven by tin-plated copper wires or aluminum alloy wires.

[0012] Further, the cross-sectional diameter of the tin-plated copper wires and the aluminum alloy wires is 0.1mm-0.3mm, and the weaving density of the metal mesh braid layer is greater than 80%.

[0013] The new energy high-voltage automobile cable provided by the utility model has the advantages that: the high-temperature resistance of the cable is improved by the high-temperature resistance of the TPE insulation layer; the silicone rubber sheath layer with high-temperature resistance and aging resistance is arranged on the outermost layer of the cable body, and the heat insulation filler is filled in the filling groove in the silicone rubber sheath layer, so that the heat insulation performance of the cable is improved, the conduction of external heat to the cable body is slowed down, the influence of external high temperature on the cable is weakened, and the electrical performance and mechanical strength of the cable are ensured in a high-temperature working environment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a structural schematic view of a new energy high-voltage automobile cable according to the utility model embodiment 1.

[0015] Figure 2A structure schematic view of a new energy high-voltage automobile cable is provided for the embodiment 2 of the utility model.

[0016] Figure mark

[0017] 1, TPE insulation layer; 3, core conductor; 4, metal mesh braid layer; 5, aluminum foil shielding layer; 6, polyester film layer; 7, silicone rubber sheath layer; 71, filling groove; 72 silicone rubber outer layer; 73, silicone rubber inner layer; 74, silicone rubber support plate; 8, heat insulation filler. DETAILED DESCRIPTION

[0018] In order to further introduce the utility model, the following will be described in conjunction with the drawings. It is particularly pointed out that the embodiments described below are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Embodiment 1

[0020] A new energy high-voltage automobile cable, comprising a cable body and a protective sleeve tightly wrapped outside the cable body.

[0021] Specifically, referring to Figure 1 As shown in the figure, the cable body comprises a core conductor 3, and the core conductor 3 is wrapped with a TPE insulation layer 1 outside. The TPE insulation layer 1 is made of TPE material (thermoplastic elastomer), which has good high temperature resistance, can keep softness and elasticity in high temperature working environment, enhances the toughness, tear resistance and high temperature resistance of the cable body, avoids the problems such as hardening and cracking of the insulation layer caused by high temperature, so as to ensure the integrity of the internal structure of the cable and the reliability of the electrical insulation, and improve the high temperature resistance of the internal structure of the cable body.

[0022] Among them, the core conductor 3 is composed of several oxygen-free copper wires regularly twisted. Using oxygen-free copper wire as core conductor can significantly reduce resistance and improve current transmission efficiency. At the same time, the regular twisting method can ensure the close contact between each oxygen-free copper wire, form a stable twisted structure, further reduce resistance and improve the overall conductivity of the cable.

[0023] The protective sleeve comprises a metal mesh braid layer 4, an aluminum foil shielding layer 5, a polyester film layer 6 and a silicone rubber sheath layer 7 arranged in sequence along the direction away from the cable body.

[0024] The metal mesh braid layer 4 has high strength and toughness, can provide additional mechanical protection for the cable, and can form a conductive shielding layer to effectively prevent external electromagnetic fields from interfering with the internal signals of the cable and improve the anti-interference ability of the cable.

[0025] In the embodiment, the metal mesh braid layer 4 is woven by tin-plated copper wire or aluminum alloy wire. The cross-sectional diameter of the tin-plated copper wire and the aluminum alloy wire is 0.1-0.3 mm, and the weaving density of the metal mesh braid layer is greater than 80%.

[0026] The aluminum foil shielding layer 5 as the second electromagnetic interference shielding layer can further reduce the interference of external electromagnetic fields on the internal signals of the cable and ensure the stable transmission of signals. The combination of the aluminum foil shielding layer 5 and the metal mesh braid layer 4 can form a more complete shielding system. The metal mesh braid layer 4 can effectively block the invasion of external high-frequency electromagnetic waves, and the aluminum foil shielding layer 5 has good shielding effect on low-frequency electric field, thereby effectively improving the overall shielding effect of the cable, avoiding the electromagnetic interference on the cable caused by the complex electromagnetic environment of the large number of devices in the new energy vehicle, effectively improving the clarity and stability of the signal transmitted by the core conductor 3 in the cable, and improving the quality of the transmitted signal.

[0027] The polyester film layer 6 can isolate the aluminum foil shielding layer 5 and the silicone rubber outer sheath layer 7, and has good insulation performance. In addition, the polyester film 6 layer also has certain moisture-proof and corrosion-resistant properties.

[0028] The silicone rubber sheath layer 7 is provided with a plurality of filling grooves 71, and the filling grooves 71 are provided with heat insulation fillers 8. In the embodiment, the heat insulation fillers 8 include but are not limited to any one of rock wool, glass fiber, and basalt fiber, and the rock wool, glass fiber, and basalt fiber all have certain fireproof and flame-retardant effects.

[0029] Silicone rubber is a high-performance elastomer material with excellent high-temperature resistance, which can maintain stable physical and chemical properties in high-temperature environments and is not prone to deformation, aging or decomposition, thereby providing long-term effective high-temperature protection for the cable. In combination with the setting of the TPE insulation layer 1, the overall high-temperature resistance of the cable is greatly improved, which helps to avoid the influence of heat generated by external working equipment on the cable. The setting of the filling groove 71 forms multiple heat insulation spaces inside the silicone rubber sheath layer 7, and by filling the heat insulation fillers 8 in the heat insulation spaces, the transmission of heat to the inside of the cable can be effectively reduced, and the influence of high heat generated by the operation of multiple external devices on the inside of the cable can be avoided.

[0030] The silicon rubber sheath layer 7 comprises a silicon rubber outer layer 72, a silicon rubber inner layer 73 and a plurality of silicon rubber support plates 74 arranged along the length direction of the cable body. The silicon rubber inner layer 73 is precisely wrapped outside the polyester film layer 6, the silicon rubber outer layer 72 is sleeved outside the silicon rubber inner layer 73, the silicon rubber support plates 74 are arranged between the silicon rubber outer layer 72 and the silicon rubber inner layer 73, and the adjacent silicon rubber support plates 74 form the filling groove 71.

[0031] The adjacent silicon rubber support plates 74 not only enhance the structural strength of the silicon rubber sheath layer 7, but also form the filling groove 71 for filling the thermal insulation filler 8, so that the silicon rubber sheath layer 7 is resistant to high temperature, and the overall thermal insulation effect of the cable is improved, so that the cable can stably operate for a long time in a high temperature environment without failure or damage due to excessive temperature. At the same time, the silicon rubber sheath layer 7 has corresponding elasticity, so that it can adapt to the slight deformation of the cable during use.

[0032] In the embodiment, the thickness of the silicon rubber outer layer 72 is greater than or equal to the thickness of the silicon rubber inner layer 73.

[0033] The new high-voltage automobile cable provided by the embodiment greatly improves the high-temperature resistance of the cable by arranging the TPE insulation layer 1 and the silicon rubber sheath layer 7, and further insulates the external heat from being transmitted to the inside of the cable by arranging the filling groove 71 filled with the thermal insulation filler 8 inside the silicon rubber sheath layer 7, thereby improving the overall high-temperature resistance of the cable. At the same time, the double shielding design of the metal mesh braid layer 4 and the aluminum foil shielding layer 5 makes the cable have good signal shielding capability and can normally transmit signals in a complex electromagnetic environment.

[0034] Embodiment 2

[0035] Reference Figure 2 Compared with embodiment 1, the difference between embodiment 2 is that the silicon rubber sheath layer 7 comprises a silicon rubber outer layer 72 and a silicon rubber inner layer 73; the silicon rubber inner layer 73 is precisely wrapped outside the polyester film layer 6, the silicon rubber outer layer 72 is sleeved outside the silicon rubber inner layer 73, and the filling groove 71 is formed between the silicon rubber outer layer 72 and the silicon rubber inner layer 73.

[0036] The preferred embodiments of the utility model disclosed above are only used for helping to set forth the utility model, and do not limit the utility model to be only the specific implementation manner described. Apparently, according to the content of the description, other modifications and changes can be made. The embodiments selected and specifically described in the description are for better explaining the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model, and are not limitations on the utility model, and any scheme of simple transformation of the utility model belongs to the protection range of the utility model.

Claims

1. A new energy high voltage automotive cable, characterized in that, The cable body comprises a core conductor, and the core conductor is tightly wrapped by a TPE insulation layer outside; The core conductor is regularly twisted by several oxygen-free copper wires; The protective sleeve comprises, in sequence from the direction away from the cable body, a metal mesh braid layer, an aluminum foil shielding layer, a polyester film layer, and a silicone rubber sheath layer; The silicone rubber sheath layer is provided with a plurality of filling grooves, and the filling grooves are provided with heat insulation fillers.

2. A new energy high-voltage automobile cable according to claim 1, characterized in that, The silicone rubber sheath layer comprises a silicone rubber outer layer, a silicone rubber inner layer, and a plurality of silicone rubber support plates arranged along the length direction of the cable body; the silicone rubber inner layer is tightly wrapped outside the polyester film layer, the silicone rubber outer layer is sleeved outside the silicone rubber inner layer, the silicone rubber support plates are arranged between the silicone rubber outer layer and the silicone rubber inner layer, and adjacent silicone rubber support plates form the filling grooves.

3. The new energy high-voltage automobile cable according to claim 1, characterized in that, The silicone rubber sheath layer comprises a silicone rubber outer layer and a silicone rubber inner layer; the silicone rubber inner layer is tightly wrapped outside the polyester film layer, the silicone rubber outer layer is sleeved outside the silicone rubber inner layer, and the filling grooves are formed between the silicone rubber outer layer and the silicone rubber inner layer.

4. A new energy high-voltage vehicle cable according to claim 2 or 3, characterized in that, The thickness of the silicone rubber outer layer is greater than or equal to the thickness of the silicone rubber inner layer.

5. The new energy high-voltage automobile cable according to claim 1, characterized in that, The heat insulation fillers include, but are not limited to, any one of rock wool, glass fiber, and basalt fiber.

6. The new energy high-voltage automobile cable according to claim 1, characterized in that, The metal mesh braid layer is woven by tin-plated copper wires or aluminum alloy wires.

7. A new energy high-voltage automobile cable according to claim 6, characterized in that, The cross-sectional diameters of the tin-plated copper wires and the aluminum alloy wires are both 0.1mm-0.3mm, and the weaving density of the metal mesh braid layer is greater than 80%.

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