A liquid-cooled DC charging cable for charging piles

Abstract

The present invention discloses a liquid-cooled DC charging cable for a charging pile, which relates to the technical field of DC charging cables and solves the problem that the temperature of the coolant in the internal condenser tube continues to rise, which causes the temperature of the coolant to continuously accumulate in the tube, and ultimately causes the cooling effect of the coolant to fail. A liquid-cooled DC charging cable for a charging pile comprises a protective layer, wherein a battery core is provided in the middle of the protective layer, a plurality of condensers are arranged on the surface of the battery core, a heat-conducting component is provided inside the condenser tube, a clamping piece is provided between the two condenser tubes, and a heat-absorbing sleeve is provided on the surface of the protective layer. In the present invention, by providing a heat-conducting component inside the condenser tube, the spiral strips in the heat-conducting component are set to the same spiral structure as the spiral tube, and the spiral strips provided on the surface of the spiral strips are also set to a spiral structure accordingly. This arrangement greatly improves the cooling performance of the overall heat-conducting component on the overall component.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid-cooled DC charging cables, and in particular to a liquid-cooled DC charging cable for a charging pile. Background Art

[0002] Liquid-cooled DC charging cables utilize an internal liquid cooling system. Coolant flows through the cable, directly dissipating heat generated during charging, thereby keeping the cable and charging system cool. This method not only effectively dissipates heat but also allows high currents to be carried through a small cable cross-section, ensuring safe and stable charging.

[0003] However, after long-term use, the temperature of the coolant in the internal condenser tube of the existing liquid-cooled DC charging cable continues to rise, which causes the temperature of the coolant to continuously accumulate in the tube, eventually causing the cooling effect of the coolant to fail. At the same time, the charging cable will bend to varying degrees during use, and this bending may cause the internal condenser tube to break. Therefore, it does not meet existing needs. In this regard, we propose a liquid-cooled DC charging cable for charging piles. Summary of the Invention

[0004] The object of the present invention is to provide a liquid-cooled DC charging cable for a charging pile, so as to solve the problem proposed in the above-mentioned background technology that after long-term use, the temperature of the coolant in the internal condenser tube of the liquid-cooled DC charging cable continues to rise, which causes the temperature of the coolant to continuously accumulate in the tube, and eventually causes the cooling effect of the coolant to fail. At the same time, the charging cable will bend to varying degrees during use, and this bending may cause the internal condenser tube to break.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a liquid-cooled DC charging cable for a charging pile, comprising a protective layer, a battery core disposed in the middle of the protective layer, a plurality of condensing tubes arranged on the surface of the battery core, a heat-conducting component disposed inside the condensing tubes, a clamping member disposed between two condensing tubes, a heat-absorbing sleeve disposed on the surface of the protective layer, and a heat-dissipating layer disposed on the surface of the heat-absorbing sleeve;

[0006] The heat absorbing sleeve comprises a heat absorbing layer covering the surface of the protective layer, and the surface of the heat absorbing layer is provided with a plurality of heat conducting grooves;

[0007] The condenser tube comprises a spiral tube wound on the surface of the battery core, both ends of the spiral tube are connected to connecting tubes, and a heat conducting component is provided inside the spiral tube.

[0008] Preferably, a plurality of connecting clips are provided on the surface of the spiral tube.

[0009] Preferably, the connecting clamp includes a connecting plate covering the surface of the spiral tube, and a connecting ring is connected between each of the connecting plates.

[0010] Preferably, the connecting plate is configured as a semicircular plate structure.

[0011] Preferably, the heat-conducting component includes a first spiral strip, both ends of which are fixedly connected to short heat-conducting strips, a plurality of second spiral strips are provided around the first spiral strip, one end of the second spiral strip is fixedly connected to a side heat-conducting strip, and the cross-sectional surface of the side heat-conducting strip is set to a U-shaped structure.

[0012] Preferably, one end of the side heat-conducting strip is supported on the surface of the inner wall of the connecting pipe, and the short heat-conducting strip passes through the connecting pipe and the protective layer and extends into the external heat-absorbing sleeve, and the short heat-conducting strip and the heat-absorbing sleeve are fixedly connected.

[0013] Preferably, the clamping member includes a support plate arranged on the surface of the connecting pipe, one end of the support plate is fixedly connected to a connecting strip, the lower end of the connecting strip is fixedly connected to an elastic strip, and both ends of the elastic strip are fixedly connected to support rings.

[0014] Preferably, the elastic strip is made of an elastic metal material, and the connecting strip is connected between the connecting tube and the elastic strip in a bent structure.

[0015] Preferably, the support ring is annular in structure, and the support ring is supported on the inner surface of the protective layer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a heat-conducting component inside the condenser tube. The first spiral strip in the heat-conducting component is configured as a spiral structure identical to the spiral tube, and the second spiral strip disposed on the surface of the first spiral strip is also configured as a spiral structure following the spiral strip. This configuration greatly improves the cooling performance of the entire heat-conducting component on the entire component. The side heat-conducting strip is also configured as a spiral structure following the spiral tube, and the cross-section of the side heat-conducting strip is configured as a U-shaped structure, thereby increasing the contact area between the side heat-conducting strip and the coolant inside the spiral tube. This configuration enables the entire heat-conducting component to conduct heat to the coolant inside the spiral tube.

[0018] 2. The present invention is connected to a short thermally conductive strip at one end of the first spiral strip, wherein the first spiral strip guides the heat of the coolant to the short thermally conductive strip at the upper end. Through this arrangement, the entire short thermally conductive strip can guide the heat into the heat-absorbing sleeve, wherein the heat-absorbing layer is made of a heat-absorbing material, and the heat-absorbing layer can absorb and process the heat guided by the short thermally conductive strip, thereby further reducing the heat of the internal coolant. The spiral arrangement of the first spiral strip, the side thermally conductive strip, and the second spiral strip can support the spiral tube. This arrangement enhances the toughness of the spiral tube and prevents the spiral tube from bending and breaking when the entire cable is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic cross-sectional view of the overall structure of the present invention;

[0020] Figure 2 This is a structural stereogram of the integral heat-absorbing sleeve of the present invention;

[0021] Figure 3 This is an enlarged view of the internal three-dimensional structure of the present invention;

[0022] Figure 4 It is a front view cutaway view of the interior of the present invention;

[0023] Figure 5 3D diagram of the heat conducting component of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of the three-dimensional structure at point A in the middle.

[0025] In the figure: 1. Battery cell; 2. Condenser; 201. Spiral tube; 202. Connecting tube; 3. Protective layer; 4. Connector; 401. Support plate; 402. Connecting strip; 403. Support ring; 404. Elastic strip; 5. Heat absorbing sleeve; 501. Heat absorbing layer; 502. Heat conducting groove; 6. Heat dissipation layer; 7. Heat conducting component; 701. First spiral strip; 702. Short heat conducting strip; 703. Side heat conducting strip; 704. Second spiral strip; 8. Connecting clip; 801. Connecting plate; 802. Connecting ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figures 1 to 6The present invention provides an embodiment of a liquid-cooled DC charging cable for a charging pile, comprising a protective layer 3, a battery core 1 being provided in the middle of the protective layer 3, a plurality of condensing tubes 2 being arranged on the surface of the battery core 1, a heat conducting component 7 being provided inside the condensing tubes 2, a clamping member 4 being provided between two condensing tubes 2, a heat absorbing sleeve 5 being provided on the surface of the protective layer 3, and a heat dissipation layer 6 being provided on the surface of the heat absorbing sleeve 5;

[0028] The heat-absorbing sleeve 5 includes a heat-absorbing layer 501 covering the surface of the protective layer 3, and a plurality of heat-conducting grooves 502 are provided on the surface of the heat-absorbing layer 501. The condenser 2 includes a spiral tube 201 wound on the surface of the battery core 1, and both ends of the spiral tube 201 are connected to connecting tubes 202. A heat-conducting component 7 is provided inside the spiral tube 201.

[0029] A plurality of connecting clips 8 are provided on the surface of the spiral tube 201, wherein the connecting clips 8 include connecting plates 801 covering the surface of the spiral tube 201, and connecting rings 802 are connected between each connecting plate 801, and the connecting plates 801 are configured as a semicircular plate structure, wherein the semi-lunar plate structure of the connecting plate 801 makes the entire spiral tube 201 elastic, and also makes the surface of the entire spiral tube 201 less prone to extrusion and bending, wherein the connecting ring 802 can fix the plurality of connecting plates 801 in series, and through this configuration, the plurality of connecting plates 801 are formed into a whole, further improving the fixing of the spiral tube 201 by the overall connecting clip 8.

[0030] The heat-conducting component 7 includes a first spiral strip 701, both ends of which are fixedly connected to short heat-conducting strips 702. A plurality of second spiral strips 704 are provided around the first spiral strip 701, and one end of the second spiral strip 704 is fixedly connected to a side heat-conducting strip 703. The cross-section of the side heat-conducting strip 703 is set as a U-shaped structure. This arrangement increases the surface area of ​​the entire first spiral strip 701, so that the surface of the first spiral strip 701 can be more in contact with the coolant inside the connecting tube 202, so that the cooling heat can be quickly transferred to the heat-conducting component 7.

[0031] One end of the side heat conducting strip 703 is supported on the surface of the inner wall of the connecting tube 202 , and the short heat conducting strip 702 passes through the connecting tube 202 and the protective layer 3 and extends into the external heat absorbing sleeve 5 , and the short heat conducting strip 702 and the heat absorbing sleeve 5 are fixedly connected.

[0032] The above-mentioned clamping component 4 includes a support plate 401 arranged on the surface of the connecting tube 202, one end of the support plate 401 is fixedly connected to the connecting strip 402, the lower end of the connecting strip 402 is fixedly connected to the elastic strip 404, both ends of the elastic strip 404 are fixedly connected to the support ring 403, the elastic strip 404 is made of elastic metal material, the connecting strip 402 is a bent structure connected between the connecting tube 202 and the elastic strip 404, the support ring 403 is an annular structure, and the support ring 403 is supported on the inner surface of the protective layer 3. This arrangement enables the elastic strip 404, the connecting strip 402 and the support plate 401 to be connected as a whole, and in this arrangement, the overall clamping component 4 can support the connecting tube 202 therein to prevent the connecting tube 202 from excessive bending.

[0033] When the cable is in use, one end of the internal condenser tube 2 is connected to the liquid pump on the external condensate tank, and the other end of the condenser tube 2 is connected to the reflux device, so that the interior of the condenser tube 2 is filled with condensate, and this setting enables the condenser tube 2 to cool the internal battery cell 1.

[0034] Wherein a heat-conducting component 7 is provided inside the condenser tube 2, and the first spiral strip 701 in the heat-conducting component 7 is set to the same spiral structure as the spiral tube 201, and the second spiral strip 704 arranged on the surface of the first spiral strip 701 is also set to a spiral structure therewith. This arrangement greatly improves the cooling performance of the entire heat-conducting component 7 on the entire component, wherein the side heat-conducting strip 703 is also set to a spiral structure with the spiral tube 201, and the cross-section of the side heat-conducting strip 703 is set to a U-shaped structure, which increases the contact area between the side heat-conducting strip 703 and the cooling liquid inside the spiral tube 201. This arrangement enables the entire heat-conducting component 7 to conduct heat to the cooling liquid inside the spiral tube 201;

[0035] A short heat-conducting strip 702 is connected to one end of the first spiral strip 701, wherein the first spiral strip 701 guides the heat of the coolant to the short heat-conducting strip 702 at the upper end. This arrangement enables the entire short heat-conducting strip 702 to guide the heat into the heat-absorbing sleeve 5. The heat-absorbing layer 501 is made of a heat-absorbing material, and the heat-absorbing layer 501 can absorb and process the heat guided by the short heat-conducting strip 702, further reducing the heat of the internal coolant. The spiral arrangement of the first spiral strip 701, the side heat-conducting strip 703, and the second spiral strip 704 can support the spiral tube 201. This arrangement enhances the toughness of the spiral tube 201, preventing the spiral tube 201 from bending and breaking when the entire cable is in use.

[0036] A clip 4 is also provided between every two spiral tubes 201. The support plate 401 in the clip 4 supports the entire connecting tube 202. At the same time, one side of the support plate 401 can be fixedly connected to the connecting strip 402. By fixing the elastic strip 404 at the lower end of the connecting strip 402 and fixing the support ring 403 on both sides of the elastic strip 404, the connecting strip 402 and the elastic strip 404 can both support the connecting tube 202 to avoid the connecting tube 202 from breaking when bending. The elastic strip 404 is elastic, which makes the entire clip 4 have elastic bending performance. This setting enables the connecting tube 202 to be bent at an obtuse angle, thereby avoiding the connection tube 202 from breaking due to a large bending amplitude.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A liquid-cooled DC charging cable for a charging pile, comprising a protective layer (3), characterized in that: An electric core (1) is provided in the middle of the protective layer (3), a plurality of condensing tubes (2) are arranged on the surface of the electric core (1), a heat conducting component (7) is provided inside the condensing tube (2), a clamping member (4) is provided between two of the condensing tubes (2), a heat absorbing sleeve (5) is provided on the surface of the protective layer (3), and a heat dissipation layer (6) is provided on the surface of the heat absorbing sleeve (5); The heat absorbing sleeve (5) comprises a heat absorbing layer (501) covering the surface of the protective layer (3), and a plurality of heat conducting grooves (502) are provided on the surface of the heat absorbing layer (501); The condenser tube (2) comprises a spiral tube (201) wound on the surface of the battery core (1), both ends of the spiral tube (201) are connected to connecting tubes (202), and a heat conducting component (7) is provided inside the spiral tube (201); The surface of the spiral tube (201) is provided with a plurality of connecting clamps (8), the connecting clamps (8) comprising connecting plates (801) covering the surface of the spiral tube (201), each of the connecting plates (801) being connected with a connecting ring (802), wherein the connecting ring (802) is capable of fixing the plurality of connecting plates (801) in series, and the connecting plates (801) are configured as semicircular plate structures; The heat-conducting component (7) comprises a first spiral strip (701), both ends of the first spiral strip (701) are fixedly connected to short heat-conducting strips (702), a plurality of second spiral strips (704) are provided around the first spiral strip (701), one end of the second spiral strip (704) is fixedly connected to a side heat-conducting strip (703), and the cross-section of the side heat-conducting strip (703) is set to a U-shaped structure; One end of the side heat-conducting strip (703) is supported on the surface of the inner wall of the connecting tube (202), and the short heat-conducting strip (702) passes through the connecting tube (202) and the protective layer (3) and extends into the external heat-absorbing sleeve (5), and the short heat-conducting strip (702) and the heat-absorbing sleeve (5) are fixedly connected.

2. A liquid-cooled DC charging cable for a charging pile according to claim 1, characterized in that: The clamping member (4) comprises a supporting plate (401) arranged on the surface of the connecting tube (202), one end of the supporting plate (401) is fixedly connected to a connecting strip (402), the lower end of the connecting strip (402) is fixedly connected to an elastic strip (404), and both ends of the elastic strip (404) are fixedly connected to a supporting ring (403).

3. The liquid-cooled DC charging cable for a charging pile according to claim 2, characterized in that: The elastic strip (404) is made of an elastic metal material, and the connecting strip (402) is connected between the connecting tube (202) and the elastic strip (404) in a bent structure.

4. The liquid-cooled DC charging cable for a charging pile according to claim 2, characterized in that: The support ring (403) has an annular structure, and the support ring (403) is supported on the inner surface of the protective layer (3).

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