High-heat-dissipation cable for new energy automobile

Abstract

The utility model provides a high heat dissipation cable for a new energy automobile, which comprises a cable main body internally provided with a plurality of cable cores, an insulating layer is independently arranged outside each cable core, and the cable main body is provided with a high heat part without an outer sheath and only remaining the cable cores; the LED lamp further comprises a heat dissipation mechanism and an outer wrapping layer. The heat dissipation mechanism is arranged in the high-heat part, cable cores of the high-heat part are dispersedly clamped on the outer side of the heat dissipation mechanism, cooling liquid circularly flows in the heat dissipation mechanism, and the cooling liquid is communicated with an automobile radiator; and the outer wrapping layer is a heat insulation material wrapping the heat dissipation mechanism, the high-heat part and the cable main body at the two sides of the high-heat part. According to the utility model, the heat exchange mechanism is arranged in the cable, and a plurality of core wires of the cable are dispersed by the heat exchange mechanism for heat dissipation, so that heat concentration is avoided, the heat exchange efficiency can be obviously improved, and an excellent heat exchange effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a high heat dissipation cable for new energy vehicles. Background Technology

[0002] Currently, new energy vehicles are mainly electric vehicles. When they are running, they use batteries to power the motor. The rotation of the motor provides the driving force for the new energy vehicle. After the new energy vehicle has been running for a long time, the motor will generate a lot of heat and transfer and radiate heat to the surrounding cables and vehicle parts. The cables located near the motor and connected to the motor (especially the cables close to the motor) will have their temperature rise rapidly under the action of heat transferred directly and indirectly by the motor. When the temperature exceeds the ignition point of the cable material, the cable will spontaneously combust, causing serious accidents. Therefore, it is very important to improve the heat dissipation performance of the cables.

[0003] A search revealed that patent CN117438145B discloses a cable device for new energy vehicles, relating to the field of automotive cables. The device includes: a cable core, with an insulation layer wrapped around its outer side; a sheath, fitted onto the insulation layer, with a cavity containing coolant; a housing, wrapped around the sheath, with a compression groove; and a compression member, passing through the compression groove, used to compress the sheath to allow coolant to flow within it. This method utilizes the coolant flowing within the sheath to exchange heat with the cable, carrying away heat. The coolant then exchanges heat with the surrounding air to further reduce heat. However, the cable temperature rise is not solely due to direct heat transfer but also includes radiative heat transfer. Since the sheath is located near the motor, it also receives radiative heat from the motor, causing both the sheath and coolant temperatures to rise. This reduces the temperature difference between the coolant and the cable, decreasing heat dissipation efficiency and deteriorating heat exchange performance. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a high-heat-dissipation cable for new energy vehicles with high heat dissipation efficiency and good heat exchange effect.

[0005] The objective of this utility model is achieved through the following technical solution.

[0006] A high-heat-dissipation cable for new energy vehicles includes a cable body with multiple cable cores, each cable core having its own insulation layer. The cable body has a high-heat section with the outer sheath removed, leaving only the cable cores. It also includes a heat dissipation mechanism and an outer sheath. The heat dissipation mechanism is located inside the high-heat section, and the cable cores of the high-heat section are distributed and clamped on the outside of the heat dissipation mechanism. Coolant circulates inside the heat dissipation mechanism and is connected to the vehicle radiator. The outer sheath is a heat-insulating material wrapped around the heat dissipation mechanism, the high-heat section, and the cable body on both sides of the high-heat section.

[0007] The heat dissipation mechanism includes an inner tube, which is a hollow tube fitted inside the high-heat section of the cable body. Inside the inner tube, a partition divides the interior into two cavities: a liquid inlet pipe connected to the front end and a liquid outlet pipe connected to the rear end. Multiple grooved, concave-facing clamping plates are installed on the outer wall of the inner tube, with each cable core in the high-heat section clamped in one-to-one within a clamping plate. A connecting plate connects two adjacent clamping plates, and the two adjacent clamping plates, the connecting plate, and the inner tube between them form a heat dissipation cavity. Each heat dissipation cavity has a front sealing plate at the front and a rear sealing plate at the rear, making it a closed cavity. On the inner tube wall within each heat dissipation cavity, a first through hole connecting to the front cavity of the inner tube is located near the liquid inlet pipe, and a second through hole connecting to the rear cavity of the inner tube is located near the liquid outlet pipe. The other ends of the liquid inlet and outlet pipes penetrate the outer sheath and are connected to the coolant inlet and outlet of the automotive radiator, respectively.

[0008] This invention incorporates a heat exchange mechanism within the cable, which disperses the heat from multiple core wires of the cable, thus avoiding heat concentration and significantly improving heat exchange efficiency, resulting in excellent heat exchange performance. Attached Figure Description

[0009] The structure of this utility model will be further described in detail below with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the high heat dissipation cable for new energy vehicles described in this utility model.

[0011] Figure 2 for Figure 1 Full sectional view.

[0012] Figure 3 for Figure 2 A schematic diagram of the structure after removing the cable and outer sheath.

[0013] Figure 4 for Figure 1 A cross-sectional view along the AA direction.

[0014] Figure 5 for Figure 4 A schematic diagram of the structure when the cable is removed.

[0015] Figure 6 for Figure 1 A schematic diagram of the structure when the outer cladding layer is removed.

[0016] Figure 7 This is a schematic diagram of the front and rear sealing plates.

[0017] The figure shows: 1-inner tube, 2-groove plate, 3-connecting plate, 4-front sealing plate, 5-rear sealing plate, 6-outer sheath, 7-inlet pipe, 8-outlet pipe, 9-cable body, 901-cable core, 10-support plate, 11-heat dissipation fins. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Example 1

[0021] like Figure 1-7 As shown, this embodiment provides a high heat dissipation cable for new energy vehicles, including a cable body 9, a heat dissipation mechanism, and an outer sheath 6.

[0022] The cable body 9 has three cable cores 901 inside (or it can be a cable with two, four, five or more cable cores). Each cable core 901 has a separate insulation layer. The cable body 9 has a high-heat section where the outer sheath and other auxiliary layers have been removed, leaving only the cable core 901 (with a separate insulation layer).

[0023] The heat dissipation mechanism is located inside the high-heat section, and the cable cores 901 of the high-heat section are distributed and clamped on the outside of the heat dissipation mechanism. Coolant circulates inside the heat dissipation mechanism and is connected to the car radiator.

[0024] The heat dissipation mechanism includes an inner tube 1, which is a hollow tube sleeved inside the high-heat section of the cable body 9. The front end of the inner tube 1 is connected to one end of the liquid inlet pipe 7, and the rear end of the inner tube 1 is connected to one end of the liquid outlet pipe 8.

[0025] Inside the inner tube 1, there is a partition 103 that divides the interior of the inner tube 1 into two cavities (front cavity and rear cavity).

[0026] Three slotted clamping plates 2 are evenly arranged around the outer circumference of the inner tube 1. The middle part of the clamping plate 2 is fixed to the outer wall of the inner tube 1 along the length direction of the inner tube 1. The two sides of the clamping plate 2 are raised outward to form an arc-shaped semi-enclosed structure. The cross-section of the clamping plate 2 is arc-shaped. The cable cores 901 at the high-heat section are clamped one-to-one in the clamping plate 2. The clamping plate 2 is semi-enclosed on the outside of the cable core 901 along the length direction of the cable core 901.

[0027] A connecting plate 3 (a total of three connecting plates 3) is connected between two adjacent plates 2. The two adjacent plates 2, the connecting plate 3 between them, and the inner tube 1 (part of the inner tube 1) between them form a heat dissipation cavity. The front end of each heat dissipation cavity is sealed with a front sealing plate 4, and the rear end is sealed with a rear sealing plate 5, so that the heat dissipation cavity becomes a cavity with closed sides.

[0028] All the front sealing plates 4 of the heat dissipation cavities are located on the same plate body that is sleeved and fixed to the front end of the inner tube 1, and all the rear sealing plates 5 of the heat dissipation cavities are also located on the same plate body that is sleeved and fixed to the rear end of the inner tube 1. The plate body structures of the front sealing plates 4 and the rear sealing plates 5 are the same, such as... Figure 7 As shown, the outer side of the plate body where the front sealing plate 4 and the rear sealing plate 5 are located has three notches for the cable core 901 to pass through, and the middle has a round hole for the inner tube to pass through.

[0029] The card plate 2, connecting plate 3, front sealing plate 4, and rear sealing plate 5 are all made of high thermal conductivity materials (such as ceramic plates).

[0030] On the inner tube 1 wall within each heat dissipation chamber, near the inlet pipe 7, a first through hole 101 communicating with the front cavity of the inner tube 1 is provided; simultaneously, on the inner tube 1 wall within each heat dissipation chamber, near the outlet pipe 8, a second through hole 102 communicating with the rear cavity of the inner tube 1 is provided. The first through hole 101 and the second through hole 102 are respectively located on the inner tube 1 walls on both sides of the partition 103, allowing the heat dissipation chambers to connect the front and rear cavities of the inner tube 1 respectively. The partition 103 is positioned near the second through hole 102, and the diameters of both the first through hole 101 and the second through hole 102 are smaller than the inner diameter of the inner tube 1.

[0031] The other end of the inlet pipe 7 penetrates the outer sheath 6 and is connected to the coolant outlet of the car radiator. The other end of the outlet pipe 8 penetrates the outer sheath 6 and is connected to the coolant inlet of the car radiator.

[0032] The outer sheath 6 is a heat insulation material wrapped around the heat dissipation mechanism, the high-heat section, and the cable bodies on both sides of the high-heat section. The outer sheath 6 is a wrapping tape with inner and outer layers. The inner layer is made of PVC or PE, and the middle layer is made of fiberglass, asbestos, or rock wool. The outer sheath is wrapped around the heat dissipation mechanism, the high-heat section, and the cable bodies on both sides of the high-heat section. At the same time, the parts of the liquid inlet pipe 7 and the liquid outlet pipe 8 near the motor are also wrapped with the outer sheath 6.

[0033] Working principle:

[0034] During installation, remove all parts of the high-heat section of the cable body 9 except for the three cable cores 901 with insulation layers. Then, place the heat dissipation mechanism inside the three cable cores 901, so that the three cable cores 901 are snapped into the clamping plate 2 one by one. Next, start wrapping the outer sheath 6 from the cable body 9 on the high-heat side and gradually wrap it towards the high-heat section. Wrap the three cable cores 901 and the heat dissipation mechanism inside the outer sheath 6 until it is wrapped to the cable body 9 on the other side of the high-heat section, and the installation is completed.

[0035] During operation, the low-temperature coolant flows from the coolant outlet of the car radiator into the inlet pipe 7, and then from the inlet pipe 7 into the inner pipe 1. When the coolant fills the front cavity of the inner pipe 1, it flows through the first through hole 101 into the three heat dissipation chambers. The coolant flows in the heat dissipation chambers and exchanges heat with the card plate 2, carrying away the heat from the card plate 2. At the same time, the card plate 2 exchanges heat with the cable core 901, reducing the temperature of the cable core 901. Finally, the coolant flows from the second through hole 102 into the outlet pipe 8, and then from the outlet pipe 8 into the coolant inlet of the car radiator. After the temperature is reduced by the heat dissipation of the car radiator, it flows out from the coolant outlet of the car radiator back into the inlet pipe 7, continuously circulating and reducing the temperature of the cable. Example 2

[0036] In order to support the outer cladding layer 6 and to transfer the heat from the outer cladding layer 6 to the heat dissipation cavity, the following settings are added to this embodiment based on embodiment 1.

[0037] At least one support plate 10 is fixed on the outside of the connecting plate 3, located between the connecting plate 3 and the outer cladding layer 6. Example 3

[0038] In order to improve the heat exchange efficiency between the card plate 2 and the coolant, so as to quickly reduce the temperature of the cable core, the following settings are added to this embodiment based on embodiment 1 or 2.

[0039] Multiple heat dissipation fins 1 are fixed on one side of the card plate 2 located inside the heat dissipation cavity to increase the area for heat exchange with the coolant and improve heat exchange efficiency.

[0040] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0041] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A high-heat-dissipation cable for new energy vehicles, comprising a cable body with multiple cable cores, each cable core having its own insulation layer, and a high-heat section on the cable body after removing the outer sheath, leaving only the cable core; characterized in that: It also includes a heat dissipation mechanism and an outer sheath; the heat dissipation mechanism is located inside the high-heat section and the cable cores of the high-heat section are distributed and clamped on the outside of the heat dissipation mechanism. Coolant circulates inside the heat dissipation mechanism and is connected to the car radiator; the outer sheath is a heat insulation material that wraps around the heat dissipation mechanism, the high-heat section and the cable body on both sides of the high-heat section.

2. The high heat dissipation cable for new energy vehicles according to claim 1, characterized in that: The heat dissipation mechanism includes an inner tube, which is a hollow tube fitted inside the high-heat section of the cable body. Inside the inner tube, a partition divides the interior into two cavities: a liquid inlet pipe connected to the front end and a liquid outlet pipe connected to the rear end. Multiple grooved, concave-facing clamping plates are installed on the outer wall of the inner tube, with each cable core in the high-heat section clamped in one-to-one within a clamping plate. A connecting plate connects two adjacent clamping plates, and the two adjacent clamping plates, the connecting plate, and the inner tube between them form a heat dissipation cavity. Each heat dissipation cavity has a front sealing plate at the front and a rear sealing plate at the rear, making it a closed cavity. On the inner tube wall within each heat dissipation cavity, a first through hole connecting to the front cavity of the inner tube is located near the liquid inlet pipe, and a second through hole connecting to the rear cavity of the inner tube is located near the liquid outlet pipe. The other ends of the liquid inlet and outlet pipes penetrate the outer sheath and are connected to the coolant inlet and outlet of the automotive radiator, respectively.

3. The high heat dissipation cable for new energy vehicles according to claim 2, characterized in that: The partition is positioned near the second through hole.

4. The high heat dissipation cable for new energy vehicles according to claim 2, characterized in that: There are multiple first through holes and multiple second through holes, and the diameter of both is smaller than the inner diameter of the inner tube.

5. The high heat dissipation cable for new energy vehicles according to claim 2, characterized in that: At least one support plate is fixed on the outside of the connecting plate, located between the connecting plate and the outer cladding layer.

6. The high heat dissipation cable for new energy vehicles according to claim 2, characterized in that: Multiple heat dissipation fins are fixed on one side of the card plate located inside the heat dissipation cavity.

7. The high heat dissipation cable for new energy vehicles according to any one of claims 1-6, characterized in that: The outer sheath is a wrapping tape, which has two layers, an inner layer made of PVC or PE, and a middle layer made of fiberglass, asbestos or rock wool.

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