Quick charging cable and quick charging device

Abstract

The utility model discloses a quick charging cable and a quick charging device, and belongs to the technical field of charging wire harnesses, the quick charging cable comprises a sheath, a charging wire core, a first heat exchange tube and a heat exchange filler, the sheath is provided with a cavity, and the charging wire core, the first heat exchange tube and the heat exchange filler are arranged in the cavity; the heat exchange filler wraps at least part of the outer wall of the charging wire core; the heat exchange filler covers at least part of the outer wall of the first heat exchange tube, so that heat absorbed by the heat exchange filler is transferred to the first heat exchange tube; the heat exchange filler is connected with the inner wall of the sheath; the charging wire core is wrapped by the heat exchange filler, heat to be dissipated is absorbed from the charging wire core, the first heat exchange pipe is wrapped by the heat exchange filler, and the heat exchange filler is connected with the inner wall of the sheath, so that the heat absorbed by the heat exchange filler is transferred into the first heat exchange pipe and the sheath; therefore, heat can be dissipated to the outside through the first heat exchange tube and the sheath, and potential safety hazards caused by the fact that the heat cannot be dissipated in time are eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of charging harnesses, and in particular to a fast charging cable and a fast charging device. Background Art

[0002] At present, electric vehicle users face the problem of long battery charging time. To solve this problem, it is necessary to increase the conductor cross-sectional area of ​​the copper wire to improve the current-carrying capacity of the charging cable, thereby increasing the charging power to reduce the battery charging time. However, excessive charging power will inevitably increase the heat generated by the charging cable. Excessive heat cannot be dissipated in time, posing a huge safety hazard. Utility Model Content

[0003] Purpose of the utility model: The purpose of the embodiments of the present application is to provide a fast charging cable and a fast charging device, aiming to solve the technical problem in the prior art that the heat generated by the charging cable during high-power charging cannot be dissipated in time.

[0004] Technical solution: The embodiment of the present application provides a fast charging cable, including:

[0005] a sheath having a chamber;

[0006] A charging cable core, the charging cable core being arranged in the chamber;

[0007] a first heat exchange tube, the first heat exchange tube being disposed in the chamber, and the first heat exchange tube being spaced apart from the charging cable core;

[0008] A heat exchange filler is disposed in the chamber, the heat exchange filler is connected to the inner wall of the sheath, the heat exchange filler covers at least a portion of the outer wall of the first heat exchange tube, and the heat exchange filler covers at least a portion of the outer wall of the charging cable core.

[0009] Beneficial effect: Compared with the prior art, the embodiment of the present application provides a fast charging cable, including a sheath, a charging core, a first heat exchange tube and a heat exchange filler, the sheath has a chamber, the charging core, the first heat exchange tube and the heat exchange filler are arranged in the chamber; in the present application, the heat exchange filler covers at least part of the outer wall of the charging core, so that the heat exchange filler absorbs the heat generated by the charging core; in the present application, the heat exchange filler covers at least part of the outer wall of the first heat exchange tube, so that the heat absorbed by the heat exchange filler is transmitted to the first heat exchange tube, and the heat generated by the first heat exchange tube is heated to a certain temperature. The heat exchange medium brings the heat out; at the same time, the heat exchange filler in the present application is connected to the inner wall of the sheath so that the heat absorbed by the heat exchange filler can be dissipated through the sheath; the present application wraps the charging cable core with the heat exchange filler to absorb the heat to be dissipated from the charging cable core, and wraps the first heat exchange tube with the heat exchange filler and connects the heat exchange filler to the inner wall of the sheath to transfer the heat absorbed by the heat exchange filler to the first heat exchange tube and the sheath, so that the heat can be dissipated to the outside through the first heat exchange tube and the sheath, eliminating the safety hazard caused by the failure to dissipate the heat in time.

[0010] The implementation of the present application provides a fast charging device, including the fast charging cable provided in the embodiment of the present application, as well as a charging terminal and a battery cooling system, wherein the charging terminal is connected to the charging core, and the charging terminal is used to connect an external power supply to connect current to the charging core; the battery cooling system is connected to the first heat exchange tube, and is used to pass the cooling medium into the first heat exchange tube to take away the heat generated by the charging core, so as to dissipate the heat to the outside, thereby eliminating the safety hazard caused by the failure to dissipate the heat in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A cross-sectional view of a fast charging cable provided in an embodiment of the present application;

[0013] Figure 2 A structural diagram of a charging terminal, a second external connection member, and a fast charging cable in a fast charging device provided in an embodiment of the present application;

[0014] Figure 3 An exploded diagram of the structure of a charging terminal, a second external connector, and a fast charging cable in a fast charging device provided in an embodiment of the present application;

[0015] Figure 4 A structural diagram of a fast charging device provided in an embodiment of the present application;

[0016] Figure 5 A partial stereoscopic diagram of a fast charging cable provided in an embodiment of the present application (showing a first external connector, a charging cable core, a first heat exchange tube, and a fourth heat exchange tube);

[0017] Figure 6 A three-dimensional diagram of a second heat exchange tube in a fast charging cable provided in an embodiment of the present application;

[0018] Figure 7 A three-dimensional diagram of a third heat exchange tube in a fast charging cable provided in an embodiment of the present application;

[0019] Figure markings: 100, sheath; 101, chamber; 200, charging cable core; 300, first heat exchange tube; 301, first chamber; 302, first opening; 400, heat exchange filler; 500, first external connection; 600, second heat exchange tube; 601, second chamber; 602, second opening; 603, fourth opening; 700, third heat exchange tube; 701, third chamber; 702, third opening; 703, fifth opening; 800, fourth heat exchange tube; 801, fourth chamber; 802, sixth opening; 900, charging terminal; 910, charging body; 920, second external connection; 1000, battery cooling system; 1100, liquid outlet; 1200, liquid inlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] See also Figures 1 to 7 The present application provides a fast charging cable, including a sheath 100, a charging core 200, a first heat exchange tube 300 and a heat exchange filler 400. The sheath 100 has a chamber 101, and the charging core 200, the first heat exchange tube 300 and the heat exchange filler 400 are arranged in the chamber 101; in the present application, the heat exchange filler 400 covers at least part of the outer wall of the charging core 200, so that the heat exchange filler 400 absorbs the heat generated by the charging core 200; in the present application, the heat exchange filler 400 covers at least part of the outer wall of the first heat exchange tube 300, so that the heat absorbed by the heat exchange filler 400 is transmitted to the first heat exchange tube 300, and the heat exchange medium in the first heat exchange tube 300 is heated to the heat exchanger 400. The heat is taken out by the heat exchange filler 400 in the present application. At the same time, the heat exchange filler 400 is connected to the inner wall of the sheath 100 so that the heat absorbed by the heat exchange filler 400 can be dissipated through the sheath 100. The present application covers the charging core 200 with the heat exchange filler 400 to absorb the heat to be dissipated from the charging core 200. The heat exchange filler 400 covers the first heat exchange tube 300 and the heat exchange filler 400 is connected to the inner wall of the sheath 100 to transfer the heat absorbed by the heat exchange filler 400 to the first heat exchange tube 300 and the sheath 100, so that the heat can be dissipated to the outside through the first heat exchange tube 300 and the sheath 100, thereby eliminating the safety hazard caused by the failure to dissipate the heat in time.

[0024] In some embodiments, the heat exchange filler 400 includes a composite phase change material, which is a mixed material composed of PCM (Phase Change Material) and polymer; specifically, the phase change material may be paraffin organic acid, and the polymer material may be HDPE (High Density Polyethylene). The polymer material serves as a supporting and sealing material to enclose the phase change material PCM in a microspace composed of it, so that when the phase change material undergoes a phase change, the composite phase change material can maintain its shape and will not leak.

[0025] See also Figures 2 to 5 In some embodiments, the fast charging cable further includes a first external connector 500, which is electrically connected to the charging core 200, and is used to connect to an external power source so as to connect the power source to the charging core 200 and charge through the charging core 200; the first external connector 500 is located outside the sheath 100, and at least a portion of the first external connector 500 extends from an end of the charging core 200 in a direction away from the sheath 100, so that when the first external connector 500 is connected to an external device, the external device does not interfere with the sheath 100.

[0026] See also Figure 1 and Figure 5In some embodiments, the charging cable core 200 includes a core conductor, a core protection layer, a core shielding layer and a core insulation layer from the inside to the outside, and the core protection layer, the core shielding layer and the core insulation layer sequentially cover the core conductor layer by layer; wherein, when designing the core conductor, a copper wire can be selected.

[0027] In some embodiments, when designing the first external connector 500, a copper conductor may be selected; specifically, the first external connector 500 and the core conductor both use copper as the conductive medium, and the first external connector 500 and the core conductor are connected by welding; specifically, the core conductor may be directly extended out of the sheath 100, and the portion of the core conductor extending out of the sheath 100 may be used as the first external connector 500. Compared with additionally connecting external materials, the auxiliary time caused by processes such as cutting and welding can be effectively reduced.

[0028] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 In some embodiments, the fast charging cable further includes a second heat exchange tube 600, which is used to connect to the first external connector 500 so as to exchange heat with the first external connector 500 and cool the first external connector 500; specifically, at least part of the tube wall of the second heat exchange tube 600 is connected to the first external connector 500, and the heat in the first external connector 500 is transferred to the second heat exchange tube 600 through the tube wall of the second heat exchange tube 600, and then transferred to the heat exchange medium flowing through the second heat exchange tube 600, and the heat is transferred to the outside through the heat exchange medium, so as to achieve the purpose of cooling the first external connector 500. Specifically, at least part of the tube wall of the second heat exchange tube 600 is connected to the first external connector 500 by welding.

[0029] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 In some embodiments, in order to achieve a better heat dissipation effect, the second heat exchange tube 600 is arranged around the first external connector 500 to increase the contact area between the second heat exchange tube 600 and the first external connector 500, so that the heat transfer area between the first external connector 500 and the second heat exchange tube 600 is increased, so that more heat can be transferred per unit time, the heat conduction efficiency is improved, the heat conduction speed to the first external connector 500 is accelerated, and the cooling speed of the first external connector 500 is accelerated. In a specific implementation, the second heat exchange tube 600 can be spiral.

[0030] See also Figures 2 to 6As shown, in some embodiments, one end of the second heat exchange tube 600 is connected to the first heat exchange tube 300, and the second heat exchange tube 600 is arranged around the first outer connecting member 500 from the end of the first heat exchange tube 300 in a direction away from the sheath 100; the heat exchange medium flows through the first heat exchange tube 300 to take out the heat obtained by the first heat exchange tube 300 from the heat exchange filler 400; then the heat exchange medium flows through the second heat exchange tube 600 to take out the heat obtained by the second heat exchange tube 600 from the first outer connecting member 500, and at the same time, due to The first external connecting member 500 is located outside the sheath 100 and is exposed to the air, and the second heat exchange tube 600 is in direct contact with the air and can directly dissipate part of the heat into the air, which helps to improve the heat dissipation efficiency; further, since the second heat exchange tube 600 is spiral and at least part of the tube wall of the second heat exchange tube 600 is connected to the first external connecting member 500, when it is arranged around the first external connecting member 500, the heat dissipation area of ​​the first external connecting member 500 can be effectively increased, thereby improving the heat dissipation efficiency of the first external connecting member 500.

[0031] See also Figures 2 to 6 In some embodiments, the first heat exchange tube 300 has a first chamber 301 and a first opening 302, the first chamber 301 and the first opening 302 are connected, and the first opening 302 is located on the side of the first heat exchange tube 300 close to the first external connector 500; the second heat exchange tube 600 has a second chamber 601 and a second opening 602, the second opening 602 is connected to the second chamber 601, and the second opening 602 is located on the side of the first external connector 500 close to the charging cable core 200; wherein the tube wall of the first heat exchange tube 300 is connected to the tube wall of the second heat exchange tube 600, and the first chamber 301 and the second chamber 601 are connected through the first opening 302 and the second opening 602, so that the heat exchange medium can flow between the first chamber 301 and the second chamber 601, that is, between the first heat exchange tube 300 and the second heat exchange tube 600.

[0032] See also Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 In some embodiments, the fast charging cable further includes a third heat exchange tube 700, which is connected to the second heat exchange tube 600. The third heat exchange tube 700 is used to receive the heat exchange medium after passing through the first heat exchange tube 300 and the second heat exchange tube 600, and guide the heat exchange medium to a subsequent device.

[0033] See also Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7In some embodiments, the third heat exchange tube 700 has a third chamber 701 and a third opening 702, the third chamber 701 and the third opening 702 are connected, and the third opening 702 is located on the side of the first external connection member 500 away from the charging cable core 200; the second heat exchange tube 600 has a fourth opening 603, the fourth opening 603 is connected to the second chamber 601, and the fourth opening 603 is located on the side of the first external connection member 500 away from the charging cable core 200; wherein, the tube wall of the third heat exchange tube 700 is connected to the tube wall of the second heat exchange tube 600, and the third chamber 701 and the second chamber 601 are connected through the third opening 702 and the fourth opening 603.

[0034] See also Figures 1 to 7 In some embodiments, the fast charging cable further includes a fourth heat exchange tube 800, which is disposed in the chamber 101 and is spaced apart from the first heat exchange tube 300 and the charging cable core 200; the heat exchange filler 400 covers at least part of the outer wall of the fourth heat exchange tube 800; the heat exchange filler 400 transfers the heat obtained from the charging cable core 200 to the fourth heat exchange tube 800, and the heat is taken out to the outside through the heat exchange medium flowing through the fourth heat exchange tube 800. The fourth heat exchange tube 800 is connected to the third heat exchange tube 700. After the third heat exchange tube 700 receives the heat exchange medium flowing through the first heat exchange tube 300 and the second heat exchange tube 600, the heat exchange medium is introduced into the fourth heat exchange tube, and the fourth heat exchange tube 800 transfers the heat obtained from the heat exchange filler 400 to the heat exchange medium, and the heat exchange medium sends the heat to the outside.

[0035] See also Figures 1 to 6 as well as Figure 7 In some embodiments, the third heat exchange tube 700 further has a fifth opening 703, which is connected to the third chamber 701, and is located on a side of the first external connector 500 close to the charging cable core 200; the fourth heat exchange tube 800 has a sixth opening 802 and a fourth chamber 801, which is connected to the fourth chamber 801, and is located on a side of the fourth heat exchange tube 800 close to the first external connector 500; wherein the shell of the third heat exchange tube 700 is connected to the shell of the fourth heat exchange tube 800, and the third chamber 701 and the fourth chamber 801 are connected through the fifth opening 703 and the sixth opening 802.

[0036] See also Figures 1 to 7In some embodiments, the present application also provides a fast charging device, including the fast charging cable provided in the embodiment of the present application, and a charging terminal 900 and a battery cooling system 1000, wherein the charging terminal 900 is connected to the charging core 200, and the charging terminal 900 is used to connect to an external charging power source, obtain a charging current, and introduce the charging current into the charging core 200, so as to charge the battery to be charged through the charging core 200; the battery cooling system 1000 is connected to the first heat exchange tube 300, and is used to provide a heat exchange medium to the first heat exchange tube 300, and provide power for the flow of the heat exchange medium, and promote the flow of the heat exchange medium, so that the heat exchange medium flows out after receiving heat in the heat exchange; at the same time, the battery cooling system 1000 is also used to receive the heat exchange medium after obtaining the heat, and cool it, and dissipate the heat to the outside, so that the heat exchange medium can be reused to form a heat exchange cycle.

[0037] See also Figures 2 to 4 In some embodiments, the charging terminal 900 includes a charging body 910 and a second external connector, the second external connector 920 is located between the charging body 910 and the first external connector 500, and is connected to the charging body 910 and the first external connector 500 respectively; the second external connector 920 realizes the electrical connection between the charging body 910 and the charging core 200 through the connection with the first external connector 500, that is, the electrical connection between the charging terminal 900 and the charging core 200; after the charging body 910 is connected to the external power supply, the charging current is passed through the second external connector 920 and the first external connector 500 to the charging core 200, and the charging current is input into the battery to be charged through the charging core 200. Specifically, at least part of the tube wall of the second heat exchange tube 600 is connected to the second external connector 920 by welding.

[0038] See also Figures 2 to 4 In some embodiments, at least a portion of the tube wall of the second heat exchange tube 600 is connected to the second external connector 920. The heat in the second external connector 920 is transferred to the second heat exchange tube 600 through the tube wall of the second heat exchange tube 600, and then transferred to the heat exchange medium flowing through the second heat exchange tube 600. The heat is transferred to the outside through the heat exchange medium to achieve the purpose of cooling the second external connector 920. Specifically, at least a portion of the tube wall of the second heat exchange tube 600 is connected to the second external connector 920 by welding.

[0039] See also Figures 2 to 4In some embodiments, in order to achieve a better heat dissipation effect, the second heat exchange tube 600 is arranged around the second external connection member 920 to increase the contact area between the second heat exchange tube 600 and the second external connection member 920, so that the heat transfer area between the second external connection member 920 and the second heat exchange tube 600 is increased, so that more heat can be transferred per unit time, the heat conduction efficiency is improved, the heat conduction speed to the second external connection member 920 is accelerated, and the cooling speed of the second external connection member 920 is accelerated.

[0040] See also Figures 2 to 4 In some embodiments, the first external connector 500 and the second external connector 920 are located in a space enclosed by the second heat exchange tube 600 .

[0041] See also Figure 4 In some embodiments, the battery cooling system 1000 is connected to the fourth heat exchange tube 800. Specifically, the battery cooling system 1000 has a liquid outlet 1100 and a liquid inlet 1200. The liquid outlet 1100 is connected to an end of the first heat exchange tube 300 away from the second heat exchange tube 600, and the liquid inlet 1200 is connected to an end of the fourth heat exchange tube 800 away from the third heat exchange tube 700. In the present application, the first heat exchange tube 300, the second heat exchange tube 600, the third heat exchange tube 700 and the fourth heat exchange tube 800 are connected in sequence. The first heat exchange tube 300 is connected to the liquid outlet 1100 to receive the heat exchange medium output by the battery cooling system 1000, and the fourth heat exchange tube 800 is connected to the liquid inlet 1200 to receive the heat exchange medium after the heat exchange is completed and introduced into the battery cooling system 1000. After the first heat exchange tube 300 receives the heat exchange medium output by the battery cooling system 1000, the heat exchange medium is heated in the battery cooling system 1000. Driven by the battery cooling system 1000, the battery flows through the first heat exchange tube 300 and absorbs the heat of the heat exchange filler 400; flows through the second heat exchange tube 600 and absorbs the heat of the first external connector 500 and the second external connector 920; flows into the fourth heat exchange tube 800 through the third heat exchange tube 700; flows through the fourth heat exchange tube 800 and absorbs the heat of the heat exchange filler 400; flows into the battery cooling system 1000 through the fourth heat exchange tube 800, and dissipates the heat in the heat exchange medium to the outside through the battery cooling system 1000.

[0042] The present application has described in detail a fast charging cable and a fast charging device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A fast charging cable, characterized in that: include: A sheath (100), the sheath (100) having a chamber (101); A charging cable core (200), wherein the charging cable core (200) is arranged in the chamber (101); a first heat exchange tube (300), the first heat exchange tube (300) being arranged in the chamber (101), the first heat exchange tube (300) being arranged at a distance from the charging cable core (200); a heat exchange filler (400), the heat exchange filler (400) being arranged in the chamber (101), the heat exchange filler (400) being connected to the inner wall of the sheath (100), and the heat exchange filler (400) covering at least a portion of the outer wall of the first heat exchange tube (300), and the heat exchange filler (400) covering at least a portion of the outer wall of the charging cable core (200); A first external connector (500), the first external connector (500) being electrically connected to the charging cable core (200); A second heat exchange tube (600), wherein the second heat exchange tube (600) is arranged around the first external connecting member (500).

2. The fast charging cable according to claim 1, characterized in that: At least a portion of the first external connecting member (500) is located outside the sheath (100).

3. The fast charging cable according to claim 2, characterized in that: At least a portion of the first external connecting member (500) extends from an end of the charging cable core (200) in a direction away from the sheath (100).

4. The fast charging cable according to claim 3, characterized in that: At least a portion of the tube wall of the second heat exchange tube (600) is connected to the first external connecting member (500).

5. The fast charging cable according to claim 4, characterized in that: One end of the second heat exchange tube (600) is connected to the first heat exchange tube (300), and the second heat exchange tube (600) is arranged around the first external connection piece (500) from the end of the first heat exchange tube (300) in a direction away from the sheath (100).

6. The fast charging cable according to claim 5, characterized in that: The fast charging cable also includes a fourth heat exchange tube (800), which is arranged in the chamber (101) and is spaced apart from the first heat exchange tube (300) and the charging cable core (200), respectively; the heat exchange filler (400) covers at least a portion of the outer wall of the fourth heat exchange tube (800).

7. The fast charging cable according to claim 6, characterized in that: It also includes a third heat exchange tube (700), one end of the third heat exchange tube (700) is connected to an end of the second heat exchange tube (600) away from the first heat exchange tube (300), and the other end of the third heat exchange tube (700) is connected to the fourth heat exchange tube (800).

8. A fast charging device, characterized in that: A fast charging cable comprising any one of claims 1-7.

9. The fast charging device according to claim 8, characterized in that: Also includes: A charging terminal (900), wherein the charging terminal (900) comprises a charging body (910) and a second external connection member (920), wherein the second external connection member (920) is located between the charging body (910) and the first external connection member (500), and is respectively connected to the charging body (910) and the first external connection member (500).

10. The fast charging device according to claim 9, characterized in that: The second heat exchange tube (600) is arranged around the second external connection member (920), and at least a portion of the tube wall of the second heat exchange tube (600) is connected to the second external connection member (920).

11. The fast charging device according to claim 8, characterized in that: Also includes: A battery cooling system (1000), the battery cooling system (1000) having a liquid outlet (1100) and a liquid inlet (1200), the liquid outlet (1100) being connected to an end of the first heat exchange tube (300) away from the second heat exchange tube (600), and the liquid inlet (1200) being connected to an end of the fourth heat exchange tube (800) away from the third heat exchange tube (700).

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