Charging seat with automatic cooling function

Abstract

The utility model discloses a charging seat with an automatic cooling function. The charging seat comprises a main seat, at least one self-cooling cable and a power terminal, the main seat is provided with at least one axial installation through hole, and the front end of each installation through hole is connected with a power terminal in an inserted and sleeved mode. The self-cooling cable comprises an outer cover, a hollow core wire and a phase change energy storage cooling part, the outer cover is integrally coated and connected outside the hollow core wire, the front end of the outer cover is connected with the rear end of the mounting through hole in a sleeved mode, the inner side end, extending out of the outer cover, of the hollow core wire is electrically connected with the power terminal, and a cooling cavity in the middle of the hollow core wire is filled with the phase change energy storage cooling part. And the phase change energy storage cooling part comprises a solid-liquid phase change material. The utility model has the effects of effective reduction of the temperature of components, safe charging, simple structure and low cost.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to a charging seat with an automatic cooling function. Background Art

[0002] The electric vehicle charging device includes a charging pile and a charging seat which are separated from each other. The charging seat is installed on the electric vehicle, and the charging pile is placed outside the electric vehicle. The charging pile is provided with a charging gun which matches the charging seat. The existing fast charging technology adopts high-power DC charging, and the temperature of the cables and electronic components rises rapidly. In order to prevent the failure of electrical components and serious spontaneous combustion, the charging gun and its own cables are provided with a liquid cooling circuit. However, the charging seat installed on the car is not provided with a cooling system, and its defects are: first, a large amount of heat is generated in the charging seat. If the heat cannot be transmitted for a long time, the temperature of the charging components and the matching cables in the charging seat will be too high, and the electronic components will fail, and in serious cases, they will burn; second, the existing charging pile liquid cooling circuit is directly applied to the charging seat, and its system is large, the structure is complex, and the cost is high, which is not suitable for direct application on the charging seat of the vehicle. Utility Model Content

[0003] In order to solve one or more of the above problems, the utility model provides a charging stand with automatic cooling function.

[0004] According to one aspect of the utility model, the charging base with automatic cooling function comprises: a main base, at least one self-cooling cable and a power terminal;

[0005] The main seat is provided with at least one axial mounting through hole, and a front end socket of each mounting through hole is connected to a power terminal;

[0006] The self-cooling cable includes an outer sheath, a hollow core wire and a phase-change energy storage cooling part. The outer sheath is integrally covered and molded to be connected to the outside of the hollow core wire. The front end of the outer sheath is connected to the rear end of the installation through hole. The inner end of the hollow core wire extending out of the outer sheath is electrically connected to the power terminal. The cooling cavity in the middle of the hollow core wire is filled with the phase-change energy storage cooling part, and the phase-change energy storage cooling part includes a solid-liquid phase change material.

[0007] When the charging station generates heat and the temperature of the hollow core wire rises, the phase change energy storage cooling part absorbs heat unidirectionally, and the temperature of the solid-liquid phase change material inside it gradually rises to the phase change temperature and turns into liquid; when it stops working, the solid-liquid phase change material releases heat to the outside and gradually turns into solid.

[0008] In some embodiments, a transverse central axis hole inside the hollow core wire forms a cooling cavity, the phase change energy storage cooling part is filled in the central axis hole, and both ends of the hollow core wire are flat flattened joints that seal the cooling cavity.

[0009] In some embodiments, a gradually changing curved surface is formed between the flattened joint and the outer wall of the cooling cavity.

[0010] In some embodiments, the flattened connector is connected to the plate-shaped inner end connector of the power terminal. In some embodiments, the phase-change energy storage cooling portion includes only solid-liquid phase-change material.

[0011] In some embodiments, the phase change energy storage cooling unit further includes a sealed bag body made of a high temperature resistant and high thermal conductivity material, the solid-liquid phase change material is sealed in the sealed bag body, and the sealed bag body is filled in the cooling cavity.

[0012] In some embodiments, the phase change energy storage cooling part is any one of paraffin, thermal storage cement and thermal storage gypsum; or the hollow core wire is made of copper.

[0013] In some embodiments, at least one axial rear end through hole is provided in the rear shell of the main seat, and a tail cover is clamped at the end of the rear end through hole, and the front end of the outer sheath of the self-cooling cable passes through the middle hole of the tail cover and the sleeve is connected to the rear end through hole.

[0014] In some embodiments, the front shell and the rear shell of the main seat are snap-fitted and fixedly connected as one, a front through hole is provided in the front shell and is directly opposite to the rear through hole, and the power terminal socket is connected to the front through hole.

[0015] In some embodiments, the front shell is provided with two front end through holes, the rear shell is provided with two front end through holes, and the two power terminals are respectively electrically connected to two self-cooling cables, and the two self-cooling cables are respectively a positive wire and a negative wire.

[0016] The charging seat with automatic cooling function adopts a self-cooling cable, and the self-cooling cable is provided with a phase change energy storage cooling part, which has the following beneficial effects: first, the phase change energy storage cooling part can automatically absorb heat and cool down, and it performs preliminary heat absorption and heating before reaching the phase change temperature. After reaching the phase change temperature, it needs to absorb a large amount of heat for a second time to change its shape, so it can continuously absorb a large amount of heat, and thus can effectively reduce the temperature of the self-cooling cable and the components in the associated charging seat, so that charging is always maintained within a safe range, charging is safe, and the service life of the equipment is long; second, the structure only needs to set a phase change energy storage cooling part in the self-cooling cable, and the phase change material has bidirectional energy transmission, which further simplifies the structure, does not change the structure of other components, and has low cost; third, the self-cooling function effectively increases the current carrying capacity of the cable during charging, as well as the charging time, and can further increase the charging speed; fourth, the structure can absorb heat from the charging pile terminal to prevent it from being overheated, and the bidirectional cooling effectively ensures the safe use performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a charging stand with automatic cooling function according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A cross-sectional schematic diagram of a charging stand with an automatic cooling function is shown;

[0019] Figure 3 for Figure 1 A three-dimensional schematic diagram of the cooling cable;

[0020] Figure 4 for Figure 3 A schematic cross-sectional view of the self-cooling cable shown;

[0021] Main seat 1, rear shell 11, rear end through hole 111, buckle 112, front shell 12, front end through hole 121;

[0022] Self-cooling cable 2, outer jacket 20, hollow core wire 21, cooling cavity 210, flattened joint 211, gradually changing curved surface 212, phase change energy storage cooling part 22;

[0023] Power terminal 3;

[0024] Tail cover 4, outer clamping plate 41, clamping hole 42. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] Figures 1 to 4 A charging stand with automatic cooling function according to an embodiment of the utility model is schematically shown. As shown in the figure, the device comprises: a main stand 1, at least one self-cooling cable 2 and a power terminal 3;

[0027] The main seat 1 is provided with at least one axial mounting through hole, and a front end socket of each mounting through hole is connected to a power terminal 3;

[0028] The self-cooling cable 2 includes an outer sheath 20, a hollow core wire 21, and a phase-change energy storage cooling part 22. The outer sheath 20 is integrally molded and connected to the outside of the hollow core wire 21. The front end of the outer sheath 20 is connected to the rear end of the installation through hole. The inner end of the hollow core wire 21 extends out of the outer sheath 20 and is electrically connected to the power terminal 3. The cooling cavity 210 in the middle of the hollow core wire 21 is filled with the phase-change energy storage cooling part 22, and the phase-change energy storage cooling part 22 includes a solid-liquid phase change material; preferably, the phase-change energy storage cooling part 22 is any one of paraffin, thermal storage cement and thermal storage gypsum. The hollow core wire 21 is preferably made of copper.

[0029] When the charging station generates heat and the temperature of the hollow core wire 21 rises, the phase change energy storage cooling part 22 absorbs heat unidirectionally, and the temperature of the solid-liquid phase change material inside it gradually rises to the phase change temperature and turns into liquid, thereby achieving the effect of cooling the cable and components in the charging station and using them within a safe temperature; when the cable stops working, the temperature outside the cable is lower than the temperature of the phase change material, and the solid-liquid phase change material releases heat to the outside and gradually turns into a solid, which is convenient for repeated use.

[0030] The charging seat with automatic cooling function adopts a self-cooling cable 2, and the self-cooling cable 2 is provided with a phase change energy storage cooling part 22, which has the following beneficial effects: first, the phase change energy storage cooling part 22 can automatically absorb heat and cool down, and it performs preliminary heat absorption and heating before reaching the phase change temperature. After reaching the phase change temperature, it needs to absorb a large amount of heat for a second time to change its shape, so it can continuously absorb a large amount of heat, so it can effectively reduce the temperature of the self-cooling cable 2 and the components in the associated charging seat, so that charging is always maintained within a safe range, charging is safe, and the service life of the equipment is long; second, the structure only needs to set the phase change energy storage cooling part 22 in the self-cooling cable 2, and the phase change material has bidirectional energy transmission, which further simplifies the structure, does not change the structure of other components, and has low cost; third, the self-cooling function effectively increases the current carrying capacity of the cable during charging, as well as the charging time, which can further improve the charging speed; fourth, the structure can absorb heat from the charging pile terminal to prevent it from being overheated, and the bidirectional cooling effectively ensures the safe use performance of the device.

[0031] Furthermore, the horizontal central axis hole inside the hollow core wire 21 forms a cooling cavity 210, and the phase change energy storage cooling part 22 is filled in the central axis hole. The two ends of the hollow core wire 21 are flat flattened joints 211, and the flattened joints 211 seal the cooling cavity 210. Preferably, the flattened joint 211 is connected to the plate-shaped inner end joint of the power terminal 3. The beneficial effects are: First, the central axis hole serves as the cooling cavity 210, and the hollow core wire 21 can be directly made of a round tube, which greatly reduces the difficulty of processing and effectively reduces the cost of parts. Second, at the same time, the phase change energy storage cooling part 22 can be larger in volume, absorb more heat, and achieve better heat absorption and energy storage. Third, the flattened joint 211 is easy to process and has high connection positioning accuracy.

[0032] Furthermore, a gradual curved surface 212 is formed between the flattened joint 211 and the outer wall of the cooling cavity 210. The beneficial effect is that the gradual curved surface 212 can reduce the stress distribution of the connection end.

[0033] Furthermore, the phase-change energy storage cooling part 22 only includes solid-liquid phase-change materials, and the solid-liquid phase-change materials are filled in the cooling cavity 210. The beneficial effect is that the structure is simple and can carry the most solid-liquid phase-change materials.

[0034] In another preferred embodiment, the phase change energy storage cooling unit 22 further includes a sealed bag body made of a high temperature resistant and high thermal conductivity material, in which the solid-liquid phase change material is sealed, and the sealed bag body is filled in the cooling cavity 210. Preferably, the sealed bag body is made of the same material as the hollow core wire 21 or an insulating plastic. The beneficial effect is that the arrangement can pre-seal the solid-liquid phase change material into a bag body, which is convenient to process and quick to assemble.

[0035] Furthermore, the main seat 1 includes an internally hollow rear shell 11, and at least one axial rear end through hole 111 is provided in the rear shell 11, and a tail cover 4 is also sleeved at the end of the rear end through hole 111, and the front end of the outer sheath 20 of the self-cooling cable 2 passes through the middle hole of the tail cover 4 and sleeves in the rear end through hole 111. The card hole 42 of the outer card plate 41 of the plastic tail cover 4 and the buckle 112 of the rear end outer wall of the plastic rear shell 11 are mutually squeezed, deformed and locked. Preferably, the positioning end ring of the tail cover 4 and the positioning groove of the rear end through hole 111 are of equal diameter, and a sealing ring is provided between the positioning end ring and the positioning groove.

[0036] The main base 1 also includes a front shell 12 with a hollow interior, the front shell 12 and the rear shell 11 are connected and fixed together, at least one axial front through hole 121 is provided in the front shell 12, the front through hole 121 and the rear through hole 111 are opposite to each other, and the power terminal 3 is plug-in connected to the front through hole 121. The beneficial effect is that the structure is easy to install.

[0037] Preferably, the front shell 12 is provided with two front through holes 121, the rear shell 11 is provided with two front through holes 121, and the two power terminals 3 are respectively electrically connected to two self-cooling cables 2, and the two self-cooling cables 2 are respectively a positive conductor and a negative conductor. The beneficial effect is that the device can be applied to most scenarios.

[0038] Furthermore, the front shell 12 is also equipped with a signal jack, and the rear shell 11 is also sleeved with a signal wire, and the signal jack is electrically connected to the signal wire. The beneficial effect is that the device makes the charging stand more functional.

[0039] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A charging stand with automatic cooling function, characterized in that: It comprises: a main seat (1), at least one self-cooling cable (2) and a power terminal (3); The main seat (1) is provided with at least one axial mounting through hole, and a front end socket of each mounting through hole is connected to one of the power terminals (3); The self-cooling cable (2) comprises an outer sheath (20), a hollow core wire (21) and a phase-change energy storage cooling portion (22); the outer sheath (20) is integrally molded and connected to the outside of the hollow core wire (21); the front end of the outer sheath (20) is plug-inly connected to the rear end of the mounting through hole; the inner end of the hollow core wire (21) protrudes out of the outer sheath (20) and is electrically connected to the power terminal (3); the cooling cavity (210) in the middle of the hollow core wire (21) is filled with the phase-change energy storage cooling portion (22); the phase-change energy storage cooling portion (22) comprises a solid-liquid phase change material; When the charging station generates heat and the temperature of the hollow core wire (21) rises, the phase change energy storage cooling part (22) absorbs heat unidirectionally, and the temperature of the solid-liquid phase change material therein gradually rises to the phase change temperature and turns into liquid; when the operation stops, the solid-liquid phase change material releases heat to the outside and gradually turns into solid.

2. The charging stand with automatic cooling function according to claim 1, characterized in that: The cooling cavity (210) is formed by a transverse central axis hole inside the hollow core wire (21), the phase change energy storage cooling part (22) is filled in the central axis hole, and both ends of the hollow core wire (21) are flat-plate-shaped flattened joints (211), and the flattened joints (211) seal the cooling cavity (210).

3. The charging stand with automatic cooling function according to claim 2, characterized in that: A gradually changing curved surface (212) is also formed between the flattened joint (211) and the outer cavity wall of the cooling cavity (210).

4. The charging stand with automatic cooling function according to claim 2, characterized in that: The flattened connector (211) is connected to the plate-shaped inner end connector of the power terminal (3).

5. The charging stand with automatic cooling function according to claim 2, characterized in that: The phase-change energy storage cooling part (22) only comprises solid-liquid phase-change material.

6. The charging stand with automatic cooling function according to claim 2, characterized in that: The phase change energy storage cooling part (22) also includes a sealed bag body made of a high temperature resistant and high thermal conductivity material, the solid-liquid phase change material is sealed in the sealed bag body, and the sealed bag body is filled in the cooling cavity (210).

7. A charging stand with automatic cooling function according to any one of claims 1 to 6, characterized in that: The phase-change energy storage cooling part (22) is any one of paraffin, heat storage cement and heat storage gypsum; or the hollow core wire (21) is made of copper.

8. The charging stand with automatic cooling function according to claim 1, characterized in that: At least one axial rear end through hole (111) is provided in the rear shell (11) of the main seat (1), and a tail cover (4) is clamped at the end of the rear end through hole (111), and the front end of the outer sheath (20) of the self-cooling cable (2) passes through the middle hole of the tail cover (4) and is sleeved in the rear end through hole (111).

9. The charging stand with automatic cooling function according to claim 8, characterized in that: The front shell (12) of the main seat (1) and the rear shell (11) are connected and fixed together as a whole, the front shell (12) is provided with a front through hole (121) which is directly opposite to the rear through hole (111) in front and back, and the power terminal (3) is plug-in-connected to the front through hole (121).

10. The charging stand with automatic cooling function according to claim 9, characterized in that: The front shell (12) is provided with two front end through holes (121), the rear shell (11) is provided with two front end through holes (121), the two power terminals (3) are respectively electrically connected to the two self-cooling cables (2), and the two self-cooling cables (2) are respectively a positive electrode wire and a negative electrode wire.

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