Constant-temperature energy storage cable

Abstract

The utility model specifically discloses a constant temperature energy storage cable, and relates to the technical field of power cables, the constant temperature energy storage cable comprises a conductor, an insulating layer, a protective layer, a temperature measurement assembly and a constant temperature assembly, the insulating layer is arranged at the peripheral side of the conductor; the protective layer is arranged on the peripheral side of the insulating layer; the temperature measuring assembly is arranged in the conductor and can detect the temperature of the conductor; the constant-temperature assembly is electrically connected with the temperature measuring assembly, at least part of the constant-temperature assembly is located in the conductor, the constant-temperature assembly can reduce the temperature of the conductor so that the temperature of the conductor can be kept constant, and the constant-temperature energy storage cable can keep the temperature constant in use.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a constant temperature energy storage cable. Background Art

[0002] Energy storage cables refer to cables used for energy storage, transfer and distribution in new energy power generation systems such as solar energy, wind energy, geothermal energy, and hydropower. The intermittent and unstable nature of renewable energy sources such as solar energy and wind energy requires energy storage systems to balance supply and demand, and energy storage cables transmit energy between energy storage devices and the power grid to ensure a reliable energy supply. However, due to the requirements of the usage scenario, energy storage cables need to be in a state of high current charging and discharging for a long time, which causes the energy storage cables to heat up severely or even be damaged, affecting the use of the energy storage cables. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a constant temperature energy storage cable, which can maintain a constant temperature during use.

[0004] According to the embodiment of the utility model, the constant temperature energy storage cable includes a conductor, an insulating layer, a protective layer, a temperature measuring component and a constant temperature component, wherein the insulating layer is arranged on the outer peripheral side of the conductor; the protective layer is arranged on the outer peripheral side of the insulating layer; the temperature measuring component is arranged in the conductor and can detect the temperature of the conductor; the constant temperature component is electrically connected to the temperature measuring component and is at least partially located in the conductor, and the constant temperature component can reduce the temperature of the conductor to keep the temperature of the conductor constant.

[0005] The constant temperature energy storage cable according to the embodiment of the utility model has at least the following beneficial effects: during the use of the constant temperature energy storage cable, when the temperature of the conductor rises, the temperature measuring component can detect the temperature of the conductor and transmit the signal to the constant temperature component. The constant temperature component lowers the temperature of the conductor according to the signal, thereby keeping the temperature of the conductor constant, thereby keeping the overall temperature of the constant temperature energy storage cable constant.

[0006] According to an embodiment of the utility model, the constant temperature component includes a circulation device, a first heat conducting pipe and a heat conducting liquid. The circulation device is electrically connected to the temperature measuring component and is connected to the first heat conducting pipe to form a circulation loop. The circulation loop is at least partially located in the conductor. The circulation device can drive the heat conducting liquid to circulate in the circulation loop.

[0007] According to an embodiment of the utility model, two circulation devices are provided, and the two circulation devices are respectively located at the two ends of the extension direction of the conductor, and the first heat conduction pipe is one or more tube groups, and the tube group includes two tube bodies, and the two ends of each of the tube bodies are respectively connected to the two circulation devices.

[0008] According to an embodiment of the utility model, the two tubes of the tube group are symmetrically arranged along the center line of the conductor.

[0009] According to an embodiment of the utility model, the circulation device is provided with one and is located at one end of the extension direction of the conductor. The first heat conduction pipe is one or more U-shaped tubes, and the two open ends of the U-shaped tube are connected to the circulation device.

[0010] According to an embodiment of the utility model, the U-shaped tube includes a curved tube portion and two straight tube portions, the curved tube portion is connected between the two straight tube portions, and the two straight tube portions are symmetrically arranged along the center line of the conductor.

[0011] According to an embodiment of the utility model, the thermal fluid is deionized water or transformer oil.

[0012] According to an embodiment of the utility model, the temperature measuring component includes a second heat conducting tube, a heat conducting medium and a temperature measuring unit, the second heat conducting tube is arranged in the conductor along the extension direction of the conductor, the temperature measuring unit is arranged in the second heat conducting tube and is electrically connected to the constant temperature component, and the heat conducting medium fills the second heat conducting tube and covers the temperature measuring unit.

[0013] According to an embodiment of the utility model, a plurality of the temperature measuring units are provided, and the plurality of the temperature measuring units are sequentially spaced apart along the extension direction of the second heat conducting pipe.

[0014] According to an embodiment of the present invention, the heat conducting medium is thermally conductive silicone grease.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A schematic cross-sectional view of a constant temperature energy storage cable according to an embodiment of the utility model;

[0018] Figure 2 It is a side schematic diagram of a constant temperature energy storage cable according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] Constant temperature energy storage cable 1000;

[0021] Conductor 100;

[0022] Insulation layer 200;

[0023] Protective layer 300;

[0024] Temperature measuring component 400; second heat conducting pipe 410;

[0025] Constant temperature component 500; circulation device 510; first heat pipe 520; pipe group 521; pipe body 5211;

[0026] Signal line 600. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Energy storage cables refer to cables used for energy storage, transfer and distribution in new energy power generation systems such as solar energy, wind energy, geothermal energy, and hydropower. The intermittent and unstable nature of renewable energy sources such as solar energy and wind energy requires energy storage systems to balance supply and demand, and energy storage cables transmit energy between energy storage devices and the power grid to ensure a reliable energy supply. However, due to the requirements of the usage scenario, energy storage cables need to be in a state of high current charging and discharging for a long time, which causes the energy storage cables to heat up severely or even be damaged, affecting the use of the energy storage cables.

[0032] To this end, the utility model proposes a constant temperature energy storage cable 1000, specifically referring to the accompanying drawings of the specification Figure 1 to Figure 2 shown.

[0033] Reference Figure 1 and Figure 2 As shown, a constant temperature energy storage cable 1000 of an embodiment of the utility model includes a conductor 100, an insulating layer 200, a protective layer 300, a temperature measuring component 400 and a constant temperature component 500. In one embodiment, the conductor 100 is a Class 6 tinned copper conductor 100. It can be understood that the Class 6 tinned copper conductor 100 has good antioxidant properties, can effectively resist oxidation and corrosion, and extend the service life of the constant temperature energy storage cable 1000. At the same time, the use of the Class 6 tinned copper conductor 100 can make the constant temperature energy storage cable 1000 more flexible and have better working performance.

[0034] Reference Figure 1 As shown, the insulating layer 200 is disposed on the outer peripheral side of the conductor 100. In one embodiment, the insulating layer 200 is made of 125°C irradiation cross-linked polyolefin insulation material, and is extruded on the outer peripheral side of the conductor 100. It should be noted that the 125°C irradiation cross-linked polyolefin insulation material is an insulating material that cross-links the polyolefin material by irradiation. This material has good electrical properties, thermal stability and chemical stability, and is suitable for various power equipment and wires and cables under high voltage, high temperature and harsh environments.

[0035] Continue to refer to Figure 1 As shown, the protective layer 300 is arranged on the outer peripheral side of the insulating layer 200. In one embodiment, the protective layer 300 is woven from nylon threads, and the nylon threads are woven and coated on the outer peripheral side of the insulating layer 200. It should be noted that the braiding density of the nylon threads is 85% to 90%. It can be understood that by providing a protective layer 300 woven from nylon threads, the bending performance and mechanical strength of the constant temperature energy storage cable 1000 can be increased. During the use of the constant temperature energy storage cable 1000, the protective layer 300 woven from nylon threads can protect the insulating layer 200 when the constant temperature energy storage cable 1000 is repeatedly bent and pulled.

[0036] Reference Figure 1 As shown, the temperature measuring component 400 is disposed in the conductor 100 and is capable of detecting the temperature of the conductor 100. It should be noted that when the temperature of the conductor 100 exceeds a set threshold, the temperature measuring component 400 sends a signal to the constant temperature component 500. In one embodiment, the temperature measuring component 400 is disposed in the center of the conductor 100 to better detect the temperature of the conductor 100.

[0037] Reference Figure 1 and Figure 2As shown, the thermostatic component 500 is electrically connected to the temperature measuring component 400, and is at least partially located in the conductor 100. In addition, the thermostatic component 500 can reduce the temperature of the conductor 100 to keep the temperature of the conductor 100 constant. It can be understood that, through the above settings, after receiving the signal transmitted by the temperature measuring component 400, the thermostatic component 500 can work in time to reduce the temperature, keep the temperature of the conductor 100 constant, and avoid overheating of the conductor 100 and affect the operation of the constant temperature energy storage cable 1000.

[0038] Reference Figure 1 As shown, a constant temperature energy storage cable 1000 of an embodiment of the utility model, the temperature measuring component 400 includes a second heat pipe 410, a heat conducting medium and a temperature measuring unit. It should be noted that the second heat pipe 410 is arranged in the conductor 100 along the extension direction of the conductor 100. It can be understood that the second heat pipe 410 is in contact with the conductor 100 and can exchange heat with the conductor 100. In one embodiment, the second heat pipe 410 is a stainless steel pipe. In one embodiment, the second heat pipe 410 is arranged at the center of the conductor 100.

[0039] In addition, the temperature measuring unit is disposed in the second heat conducting tube 410. When the second heat conducting tube 410 and the conductor 100 perform heat exchange, the temperature measuring unit can indirectly detect the temperature of the conductor 100. It should be noted that the temperature measuring unit can be fixed in the second heat conducting tube 410 by welding or the like. In addition, the temperature measuring unit is electrically connected to the constant temperature assembly 500. For details, refer to Figure 2 As shown, the temperature measuring unit is electrically connected to the thermostatic component 500 via a signal line 600, so that the signal is transmitted to the thermostatic component 500 via the signal line 600. It should be noted that the temperature measuring unit is a thermal sensor.

[0040] In one embodiment, a plurality of temperature measuring units are provided, and the plurality of temperature measuring units are sequentially and spaced apart along the extension direction of the second heat conducting tube 410. It is understandable that, through the above arrangement, the plurality of temperature measuring units can respectively detect the temperature of each position of the conductor 100 in the extension direction, so as to better grasp the temperature of the entire conductor 100. When the temperature of a certain position of the conductor 100 is too high, the temperature measuring unit at the position will quickly detect and transmit the signal to the constant temperature component 500. In one embodiment, the plurality of temperature measuring units are sequentially and spaced apart evenly along the extension direction of the second heat conducting tube 410, so as to better detect the temperature of each position of the conductor 100 in the extension direction.

[0041] It should be noted that the heat-conducting medium fills the second heat-conducting tube 410 and covers the temperature measuring unit. It is understandable that, through the above arrangement, the temperature of the conductor 100 is conducted to the second heat-conducting tube 410, then to the heat-conducting medium, and finally to the temperature measuring unit. Due to the good thermal conductivity of the heat-conducting medium, the temperature of the conductor 100 detected by the temperature measuring unit is more accurate. In one embodiment, the heat-conducting medium is thermal grease. It is understandable that thermal grease has excellent electrical insulation and excellent thermal conductivity, and can effectively improve the heat conduction efficiency.

[0042] Reference Figure 1 and Figure 2 As shown, a constant temperature energy storage cable 1000 of an embodiment of the utility model, the constant temperature component 500 includes a circulation device 510, a first heat pipe 520 and a heat transfer fluid. Among them, the circulation device 510 is electrically connected to the temperature measuring component 400, and is connected to the first heat pipe 520 to form a circulation loop, and the circulation loop is at least partially located in the conductor 100. It should be noted that the circulation device 510 can receive a signal from the temperature measuring component 400, and the circulation device 510 can drive the heat transfer fluid to circulate in the circulation loop. It can be understood that through the circulation of the heat transfer fluid in the circulation loop, the heat transfer fluid can continuously exchange heat with the conductor 100, thereby reducing the temperature of the conductor 100. In one embodiment, the circulation device 510 is connected to the temperature measuring unit through a signal line 600. In one embodiment, the first heat transfer pipe 520 is a stainless steel pipe. In one embodiment, the heat transfer fluid is deionized water or transformer oil. It can be understood that deionized water and transformer oil can well exchange heat with the conductor 100 to reduce the temperature of the conductor 100.

[0043] Reference Figure 1 and Figure 2 As shown, in one embodiment, two circulation devices 510 are provided, and the two circulation devices 510 are respectively located at the two ends of the extension direction of the conductor 100. In addition, the first heat-conducting pipe 520 is one or more tube groups 521, that is, the first heat-conducting pipe 520 can be one tube group 521, two tube groups 521, three tube groups 521, four tube groups 521, etc., which are not specifically limited here. It should be noted that the tube group 521 includes two tube bodies 5211, and the two ends of each tube body 5211 are respectively connected to the two circulation devices 510, so that the two circulation devices 510 and the tube group 521 form a circulation loop. It can be understood that through the above arrangement, the two circulation devices 510 can provide power to the heat-conducting fluid, thereby accelerating the flow speed of the heat-conducting fluid and reducing the temperature of the conductor 100 more quickly. It should be noted that each tube body 5211 is arranged along the extension direction of the conductor 100.

[0044] Continue to refer to Figure 1 and Figure 2As shown, in one embodiment, the two tubes 5211 of the tube group 521 are symmetrically arranged along the center line of the conductor 100. It can be understood that, through the above arrangement, the thermostatic component 500 can reduce the temperature of each part of the conductor 100 more evenly. It should be noted that when there is one tube group 521, the two tubes 5211 are symmetrically arranged along the center line of the conductor 100; when there are two tube groups 521, there are four tubes 5211, each of which is a group of two, and the two tubes 5211 in each group are symmetrically arranged along the center line of the conductor 100; when there are three tube groups 521, there are six tubes 5211, each of which is a group of two, and the two tubes 5211 in each group are symmetrically arranged along the center line of the conductor 100. When the number of tube groups 521 is other, such as four or five, it can be referred to the above, and it will not be repeated here.

[0045] In another embodiment, the circulation device 510 is provided with one and is located at one end of the extension direction of the conductor 100. In addition, the first heat-conducting pipe 520 is one or more U-shaped tubes. Among them, the U-shaped tube includes a curved tube portion and two straight tube portions, the curved tube portion is connected between the two straight tube portions, and the ends of the two straight tube portions away from the curved tube portion are both open ends. It should be noted that the two open ends of the U-shaped tube are connected to the circulation device 510, so that the circulation device 510 and the U-shaped tube form a circulation loop. It can be understood that through the above arrangement, the circulation device 510 provides power to the heat-conducting fluid, so that the heat-conducting fluid flows in the U-shaped tube, thereby reducing the temperature of the conductor 100. It should be noted that the straight tube portions of the U-shaped tube are all arranged along the extension direction of the conductor 100.

[0046] In one embodiment, the two straight tubes are symmetrically arranged along the center line of the conductor 100. It is understandable that, through the above arrangement, the thermostatic assembly 500 can reduce the temperature of various parts of the conductor 100 more evenly. It should be noted that when there is one U-shaped tube, the two straight tubes are symmetrically arranged along the center line of the conductor 100; when there are two U-shaped tubes, there are four straight tubes, each of which is a group of two, and the two straight tubes in each group are symmetrically arranged along the center line of the conductor 100; when there are three U-shaped tubes, there are six straight tubes, each of which is a group of two, and the two straight tubes in each group are symmetrically arranged along the center line of the conductor 100. When the number of U-shaped tubes is other, such as four or five, the above can be referred to and will not be repeated here.

[0047] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. Constant temperature energy storage cable, characterized in that: include: conductor; An insulating layer, disposed on the outer peripheral side of the conductor; A protective layer, disposed on the outer peripheral side of the insulating layer; A temperature measuring component, disposed in the conductor and capable of detecting the temperature of the conductor; A constant temperature component is electrically connected to the temperature measuring component and is at least partially located in the conductor. The constant temperature component can reduce the temperature of the conductor to keep the temperature of the conductor constant.

2. The constant temperature energy storage cable according to claim 1, characterized in that: The constant temperature component includes a circulation device, a first heat conducting pipe and a heat conducting liquid. The circulation device is electrically connected to the temperature measuring component and is connected to the first heat conducting pipe to form a circulation loop. The circulation loop is at least partially located in the conductor. The circulation device can drive the heat conducting liquid to circulate in the circulation loop.

3. The constant temperature energy storage cable according to claim 2, characterized in that: There are two circulation devices, which are respectively located at the two ends of the conductor extension direction. The first heat conduction pipe is one or more pipe groups, and the pipe group includes two pipe bodies. The two ends of each pipe body are respectively connected to the two circulation devices.

4. The constant temperature energy storage cable according to claim 3, characterized in that: The two tube bodies of the tube group are symmetrically arranged along the center line of the conductor.

5. The constant temperature energy storage cable according to claim 2, characterized in that: The circulation device is provided with one, and is located at one end of the conductor extending direction, the first heat conduction pipe is one or more U-shaped pipes, and the two open ends of the U-shaped pipe are connected to the circulation device.

6. The constant temperature energy storage cable according to claim 5, characterized in that: The U-shaped tube includes a curved tube portion and two straight tube portions, the curved tube portion is connected between the two straight tube portions, and the two straight tube portions are symmetrically arranged along the center line of the conductor.

7. The constant temperature energy storage cable according to claim 2, characterized in that: The heat transfer fluid is deionized water or transformer oil.

8. The constant temperature energy storage cable according to claim 1, characterized in that: The temperature measuring component includes a second heat conducting tube, a heat conducting medium and a temperature measuring unit. The second heat conducting tube is arranged in the conductor along the extension direction of the conductor. The temperature measuring unit is arranged in the second heat conducting tube and is electrically connected to the constant temperature component. The heat conducting medium fills the second heat conducting tube and covers the temperature measuring unit.

9. The constant temperature energy storage cable according to claim 8, characterized in that: There are a plurality of temperature measuring units, and the plurality of temperature measuring units are sequentially spaced apart along the extending direction of the second heat conducting pipe.

10. The constant temperature energy storage cable according to claim 8, characterized in that: The heat conducting medium is heat conducting silicone grease.

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