High-power charging station refrigerant direct cooling system

Abstract

The utility model relates to the technical field of new energy automobile batteries and charging pile cooling systems, and discloses a high-power charging station refrigerant direct cooling system which comprises a refrigeration compressor, an air outlet of the refrigeration compressor is communicated with a first pipeline, and a high-pressure pressure sensor and an exhaust temperature sensor are sequentially arranged on the outer side of the first pipeline. One end of the first pipeline is communicated with the aluminum micro-channel condenser, a condensation fan is arranged on one side of the aluminum micro-channel condenser, and during use, a refrigerant is compressed into high-temperature and high-pressure gas by the refrigeration compressor and then is transmitted to the aluminum micro-channel condenser; condensed medium-temperature and high-pressure refrigerant liquid enters a charging cable cooler and a battery cooler through a first electronic expansion valve and a second electronic expansion valve respectively, the surfaces of a cable and a battery are rapidly cooled, generated low-temperature and low-pressure refrigerant gas enters a refrigeration compressor, and stable operation is achieved; and the operation energy efficiency of a new energy storage charging station battery and a charging cable system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle battery and charging pile cooling systems, specifically a high-power charging station refrigerant direct cooling system. Background Art

[0002] The current passing through a conventional DC charging gun is generally below 250A, while the current passing through a super-fast charging gun is generally around 500A. Therefore, high-current fast charging brings about a significant increase in thermal effects. Continuous high temperatures can easily damage the electronic components of the charging device and may even cause safety accidents such as burning. In order to avoid safety accidents, it is necessary to reduce the heat generation of the charging gun cable, which is mainly achieved through air cooling and liquid cooling. Air cooling: It is an air cooling module + natural cooling gun wire, which relies on heat exchange with the air to reduce the temperature. Under the general trend of high-voltage fast charging, if air cooling continues to be used, thicker copper wire will be required; in addition to the increase in cost, it will also lead to an increase in the weight of the charging gun wire, which brings inconvenience and safety hazards; moreover, air cooling cannot cool the cable core. Liquid cooling: Using a liquid cooling module + liquid cooling gun line, the coolant (ethylene glycol, oil, etc.) flows through the liquid cooling cable to remove heat, so that the small-section cable can carry large current and low temperature rise. On the one hand, it can enhance heat dissipation and improve safety. On the other hand, because the cable diameter is thinner, it can reduce weight and facilitate use. In addition, because there is no fan, the noise is relatively low. Generally, the working process of new energy vehicle batteries requires refrigeration liquid cooling, mainly using the air conditioning system compressor to compress the refrigerant to circulate the cooling water, and use the cold water to cool the battery. For this reason, a high-power charging station refrigerant direct cooling system is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a high-power charging station refrigerant direct cooling system to solve the problem raised in the above background technology that the general new energy vehicle battery working process requires refrigeration liquid cooling, mainly using the air-conditioning system compressor to compress the refrigerant to circulate the cooling water, and use the cold water to cool the battery.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-power charging station refrigerant direct cooling system, comprising a refrigeration compressor, wherein the air outlet of the refrigeration compressor is connected to a first pipe, a high-pressure pressure sensor and an exhaust temperature sensor are sequentially arranged on the outside of the first pipe, one end of the first pipe is connected to an aluminum microchannel condenser, a condensing fan is arranged on one side of the aluminum microchannel condenser, the other end of the aluminum microchannel condenser is connected to a second pipe, one end of the second pipe is connected to a first Y-shaped connecting pipe, the middle of the first Y-shaped connecting pipe is respectively connected to a first electronic expansion valve and a second electronic expansion valve, the first Y-shaped connecting pipe A first inlet temperature sensor and a second inlet temperature sensor are respectively provided on the outside of the connecting pipe. The two outlet ends of the first electronic expansion valve are respectively connected to the charging cable cooler and the battery cooler. The outlet ends of the charging cable cooler and the battery cooler are respectively connected to the two ends of the second Y-shaped connecting pipe. A first outlet temperature sensor and a second outlet temperature sensor are respectively provided on the outside of the second Y-shaped connecting pipe. The outlet end of the second Y-shaped connecting pipe is connected to a third pipe. The third pipe is connected to the air inlet end of the refrigeration compressor. An intake temperature sensor and a low-pressure pressure sensor are provided on the outside of the third pipe. A dust-proof structure is provided on one side of the condensing fan.

[0005] Preferably, a connecting plate is fixedly provided on one side of the condensing fan, a mounting plate is provided on one side of the connecting plate, a protective cover is provided inside the mounting plate, a plurality of buckle plates are fixedly provided at the four corners of one side of the connecting plate and the buckle plates pass through the mounting plate, a circular plate is provided at the four corners of the other side of the connecting plate, a pin rod is fixedly provided on one side of the circular plate and the pin rod passes through the connecting plate, one end of the pin rod is located between the plurality of buckle plates, two annular limit plates are fixedly provided inside the four corners of the connecting plate, and the annular limit plates are buckled with the outer side of the pin rod.

[0006] Preferably, a buckle groove is provided on the outer side of the pin rod, and the annular limiting plate is buckled with the buckle groove through interference fit.

[0007] Preferably, the cross section of the gusset plate is processed into an L shape, and one end of the gusset plate is buckled on the outside of the mounting plate.

[0008] Preferably, through holes are provided inside the four corners of the connecting plate, and the pin rods pass through the through holes.

[0009] Preferably, pin holes are provided at the four corners of the mounting plate, and the buckle plates pass through the pin holes.

[0010] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0011] The utility model is provided with a refrigeration compressor, an aluminum microchannel condenser, a condensing fan, a first electronic expansion valve and a second electronic expansion valve. When in use, the refrigerant is compressed into a high-temperature and high-pressure gas by the refrigeration compressor, and then transmitted to the interior of the aluminum microchannel condenser to release heat. At the same time, the condensing fan drives the air to force convection heat exchange with the high-temperature and high-pressure refrigerant inside the high-pressure pressure sensor. The condensed medium-temperature and high-pressure refrigerant liquid enters the interior of the charging cable cooler and the battery cooler through the first electronic expansion valve and the second electronic expansion valve respectively. The charging cable cooler and the battery cooler will evaporate and absorb heat, thereby quickly cooling the cable and battery surface. The low-temperature and low-pressure refrigerant gas generated enters the interior of the refrigeration compressor and is further compressed by the refrigeration compressor, realizing a direct evaporation and heat absorption cycle of the refrigerant, that is, cooling the battery and charging cable of the new energy storage charging station, stably operating, and improving the energy efficiency of the battery and charging cable system of the new energy storage charging station. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 This is a schematic diagram of the system structure of the utility model;

[0014] Figure 2 This is a side structural diagram of the condensing fan of the present invention;

[0015] Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the mounting plate of the present invention;

[0016] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0017] Explanation of the accompanying drawings: 1. Refrigeration compressor; 2. High-pressure pressure sensor; 3. Exhaust temperature sensor; 4. Aluminum microchannel condenser; 5. Condensing fan; 6. First Y-type connecting pipe; 7. First electronic expansion valve; 8. Second electronic expansion valve; 9. First inlet temperature sensor; 10. Second inlet temperature sensor; 11. Charging cable cooler; 12. Battery cooler; 13. First outlet temperature sensor; 14. Second outlet temperature sensor; 15. Second Y-type connecting pipe; 16. Intake temperature sensor; 17. Low-pressure pressure sensor; 18. Connecting plate; 19. Mounting plate; 20. Protective cover; 21. Buckle plate; 22. Round plate; 23. Pin rod; 24. Annular limit plate; 25. First pipeline; 26. Second pipeline; 27. Third pipeline. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0020] Example

[0021] In the existing technology, the working process of new energy vehicle batteries generally requires cooling liquid cooling, mainly using the air-conditioning system compressor to compress the refrigerant to circulate the cooling water, and use the cold water to cool the battery.

[0022] See also Figure 1-4The utility model provides a technical solution: a high-power charging station refrigerant direct cooling system, including a refrigeration compressor 1, the air outlet of the refrigeration compressor 1 is connected to a first pipe 25, the outside of the first pipe 25 is sequentially provided with a high-pressure pressure sensor 2 and an exhaust temperature sensor 3, one end of the first pipe 25 is connected to an aluminum microchannel condenser 4, one side of the aluminum microchannel condenser 4 is provided with a condensing fan 5, the other end of the aluminum microchannel condenser 4 is connected to a second pipe 26, one end of the second pipe 26 is connected to a first Y-type connecting pipe 6, the middle of the first Y-type connecting pipe 6 is respectively connected to a first electronic expansion valve 7 and a second electronic expansion valve 8, the first Y-type connecting pipe 6 is connected to a first electronic expansion valve 7 and a second electronic expansion valve 8, and the first Y-type connecting pipe 6 is connected to a first electronic expansion valve 7 and a second electronic expansion valve 8. The outside of the pipe 6 is respectively provided with a first inlet temperature sensor 9 and a second inlet temperature sensor 10. The two outlet ends of the first electronic expansion valve 7 are respectively connected to the charging cable cooler 11 and the battery cooler 12. The outlet ends of the charging cable cooler 11 and the battery cooler 12 are respectively connected to the two ends of the second Y-shaped connecting pipe 15. The outside of the second Y-shaped connecting pipe 15 is respectively provided with a first outlet temperature sensor 13 and a second outlet temperature sensor 14. The outlet end of the second Y-shaped connecting pipe 15 is connected to the third pipe 27. The third pipe 27 is connected to the air inlet end of the refrigeration compressor 1. The outside of the third pipe 27 is provided with an intake temperature sensor 16 and a low pressure pressure sensor. Sensor 17, a dust-proof structure is provided on one side of the condensing fan 5. When in use, the refrigerant is compressed into high-temperature and high-pressure gas by the refrigeration compressor 1, and then transmitted to the inside of the aluminum microchannel condenser 4 for heat release. At the same time, the condensing fan 5 drives the air to force convection heat exchange with the high-temperature and high-pressure refrigerant inside the aluminum microchannel condenser 4. The condensed medium-temperature and high-pressure refrigerant liquid is divided into two paths. The medium-temperature and high-pressure refrigerant liquid after condensation in one path is throttled and reduced in pressure by the second electronic expansion valve 8 to become a low-temperature and low-pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid directly evaporates and absorbs heat in the battery cooler 12 to become a low-temperature and low-pressure refrigerant gas, which quickly reduces the temperature of the surface of the charging cable. The other path is condensed. The medium-temperature and high-pressure refrigerant liquid is throttled and reduced in pressure by the first electronic expansion valve 7 to become a low-temperature and low-pressure refrigerant liquid. The low-temperature and low-pressure refrigerant liquid directly evaporates and absorbs heat in the charging cable cooler 11 to become a low-temperature and low-pressure refrigerant gas, quickly cooling the battery surface temperature. The low-temperature and low-pressure refrigerant gas from the charging cable cooler 11 and the battery cooler 12 enters the interior of the refrigeration compressor 1 through the second Y-shaped connecting pipe 15 and the suction temperature sensor 16, and is further compressed by the refrigeration compressor 1, realizing a direct evaporation and heat absorption cycle of the refrigerant, that is, cooling the batteries and charging cables of the new energy storage charging station, stabilizing operation, and improving the energy efficiency of the battery and charging cable system of the new energy storage charging station.

[0023] A connecting plate 18 is fixedly provided on one side of the condensing fan 5, a mounting plate 19 is provided on one side of the connecting plate 18, a shield 20 is provided inside the mounting plate 19, a plurality of gusset plates 21 are fixedly provided at the four corners of one side of the connecting plate 18, and the gusset plates 21 pass through the mounting plate 19, and a circular plate 22 is provided at the four corners of the other side of the connecting plate 18, a pin 23 is fixedly provided on one side of the circular plate 22, and the pin 23 passes through the connecting plate 18, and one end of the pin 23 is between the plurality of gusset plates 21, and two annular limit plates 2 are fixedly provided inside the four corners of the connecting plate 18 4. The annular limiting plate 24 is buckled with the outer side of the pin rod 23. When installing the condensing fan 5, the mounting plate 19 is buckled on one side of the connecting plate 18. The multiple buckle plates 21 at the four corners of the connecting plate 18 will pass through the mounting plate 19 to limit the mounting plate 19. Then the pin rod 23 is passed through the connecting plate 18 and the mounting plate 19. One end of the pin rod 23 is between the multiple buckle plates 21, thereby fixing the mounting plate 19 and facilitating the disassembly and assembly of the mounting plate 19. At the same time, a protective cover 20 is provided inside the mounting plate 19 to protect the condensing fan 5.

[0024] A buckle groove is formed on the outer side of the pin rod 23 , and the annular limiting plate 24 is buckled with the buckle groove through interference fit, thereby connecting the pin rod 23 and the connecting plate 18 together through the annular limiting plate 24 .

[0025] The cross section of the gusset plate 21 is processed into an L shape, and one end of the gusset plate 21 is buckled on the outer side of the mounting plate 19 , and the mounting plate 19 is limited and fixed by the gusset plate 21 .

[0026] Through holes are formed at the four corners of the connecting plate 18 , and pins 23 pass through the through holes, connecting the connecting plate 18 and the mounting plate 19 together through the pins 23 .

[0027] Pin holes are provided at the four corners of the mounting plate 19 , and the buckle plates 21 pass through the pin holes. The buckle plates 21 limit the mounting plate 19 to facilitate disassembly and assembly.

[0028] Working principle or structural principle, when in use, the refrigerant is compressed into high-temperature and high-pressure gas by the refrigeration compressor 1, and then transmitted to the interior of the aluminum microchannel condenser 4 to release heat. At the same time, the condensing fan 5 drives the air to force convection heat exchange with the high-temperature and high-pressure refrigerant inside the aluminum microchannel condenser 4, and the condensing fan 5 is connected to the mounting plate 19 through the connecting plate 18. Multiple buckle plates 21 at the four corners of the connecting plate 18 will pass through the mounting plate 19 to limit the mounting plate 19, and then the pin rod 23 will pass through the connecting plate 18 and the mounting plate 19, and one end of the pin rod 23 is between the multiple buckle plates 21, thereby fixing the mounting plate 19, making it convenient to disassemble and assemble the mounting plate 19. At the same time, a protective cover 20 is provided inside the mounting plate 19, which will protect the condensing fan 5. The condensed medium-temperature and high-pressure refrigerant liquid is divided into two paths. The medium-temperature and high-pressure refrigerant liquid after condensation in one path passes through the second electronic expansion The expansion valve 8 throttles and reduces the pressure to become a low-temperature, low-pressure refrigerant liquid. The low-temperature, low-pressure refrigerant liquid directly evaporates and absorbs heat in the battery cooler 12 to become a low-temperature, low-pressure refrigerant gas, quickly reducing the temperature of the charging cable surface. The condensed medium-temperature, high-pressure refrigerant liquid on the other side passes through the first electronic expansion valve 7 and is throttled and reduced in pressure to become a low-temperature, low-pressure refrigerant liquid. The low-temperature, low-pressure refrigerant liquid directly evaporates and absorbs heat in the charging cable cooler 11 to become a low-temperature, low-pressure refrigerant gas, quickly reducing the battery surface temperature. The low-temperature, low-pressure refrigerant gas from the charging cable cooler 11 and the battery cooler 12 enters the interior of the refrigeration compressor 1 through the second Y-shaped connecting pipe 15 and the suction temperature sensor 16, and is further compressed by the refrigeration compressor 1, realizing a direct evaporation and heat absorption cycle of the refrigerant, that is, cooling the batteries and charging cables of the new energy storage charging station, stabilizing operation, and improving the energy efficiency of the battery and charging cable system of the new energy storage charging station.

[0029] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be employed without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. A high-power charging station refrigerant direct cooling system, comprising a refrigeration compressor (1), characterized in that: The air outlet of the refrigeration compressor (1) is connected to a first pipe (25), and a high-pressure pressure sensor (2) and an exhaust temperature sensor (3) are sequentially arranged on the outside of the first pipe (25). One end of the first pipe (25) is connected to an aluminum microchannel condenser (4), and a condensing fan (5) is arranged on one side of the aluminum microchannel condenser (4). The other end of the aluminum microchannel condenser (4) is connected to a second pipe (26), and one end of the second pipe (26) is connected to a first Y-type connecting pipe (6). The middle of the first Y-type connecting pipe (6) is respectively connected to a first electronic expansion valve (7) and a second electronic expansion valve (8). The outside of the first Y-type connecting pipe (6) is respectively provided with a first inlet temperature sensor (9) and a second inlet temperature sensor (10). (10), the two outlet ends of the first electronic expansion valve (7) are respectively connected to the charging cable cooler (11) and the battery cooler (12), the outlet ends of the charging cable cooler (11) and the battery cooler (12) are respectively connected to the two ends of the second Y-type connecting pipe (15), the outer side of the second Y-type connecting pipe (15) is respectively provided with a first outlet temperature sensor (13) and a second outlet temperature sensor (14), the outlet end of the second Y-type connecting pipe (15) is connected to a third pipe (27), the third pipe (27) is connected to the air inlet end of the refrigeration compressor (1), the outer side of the third pipe (27) is provided with an intake temperature sensor (16) and a low pressure sensor (17), and a dustproof structure is provided on one side of the condensing fan (5).

2. The high-power charging station refrigerant direct cooling system according to claim 1, characterized in that: A connecting plate (18) is fixedly provided on one side of the condensing fan (5), a mounting plate (19) is provided on one side of the connecting plate (18), a protective cover (20) is provided inside the mounting plate (19), a plurality of buckle plates (21) are fixedly provided at the four corners of one side of the connecting plate (18), and the buckle plates (21) pass through the mounting plate (19), a circular plate (22) is provided at the four corners of the other side of the connecting plate (18), a pin rod (23) is fixedly provided on one side of the circular plate (22), and the pin rod (23) passes through the connecting plate (18), one end of the pin rod (23) is located between the plurality of buckle plates (21), and two annular limiting plates (24) are fixedly provided inside the four corners of the connecting plate (18), and the annular limiting plates (24) are buckled with the outer sides of the pin rod (23).

3. The high-power charging station refrigerant direct cooling system according to claim 2, characterized in that: A buckle groove is provided on the outer side of the pin rod (23), and the annular limiting plate (24) is buckled with the buckle groove through interference fit.

4. The high-power charging station refrigerant direct cooling system according to claim 2, characterized in that: The cross section of the buckle plate (21) is processed into an L-shape, and one end of the buckle plate (21) is buckled on the outside of the mounting plate (19).

5. The high-power charging station refrigerant direct cooling system according to claim 2, characterized in that: Through holes are provided inside the four corners of the connecting plate (18), and the pin rods (23) pass through the through holes.

6. The high-power charging station refrigerant direct cooling system according to claim 2, characterized in that: Pin holes are provided at the four corners of the mounting plate (19), and the buckle plates (21) pass through the pin holes.

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