Plate heat exchanger for heat pump air conditioning system and vehicle

Abstract

The utility model provides a plate heat exchanger for a heat pump air conditioning system and a vehicle. The plate heat exchanger comprises a plurality of plates which are sequentially overlapped together, a battery cooler area, an intermediate heat exchanger area and a liquid cooling condenser area are formed in the plate heat exchanger, and the battery cooler area and the liquid cooling condenser area are respectively provided with a cooling liquid channel and a refrigerant channel which can exchange heat. The intermediate heat exchanger area is provided with a plurality of refrigerant channels capable of exchanging heat, and the refrigerant channel in the battery cooler area is communicated with one of the refrigerant channels in the intermediate heat exchanger area to form a first refrigerant circulation path; the refrigerant channel in the liquid cooling condenser area is communicated with the other refrigerant channel in the middle heat exchanger area to form a second refrigerant circulation path. According to the utility model, the preparation cost of the heat exchange module can be reduced, the space occupation of the heat exchange module can be reduced, the problem of assembly among different heat exchange modules can be avoided, and the application effect of the heat exchanger can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump air conditioning, and in particular to a plate heat exchanger for a heat pump air conditioning system. The utility model also relates to a vehicle using the plate heat exchanger for a heat pump air conditioning system. Background Art

[0002] Plate heat exchangers are key components in new energy vehicles. Their function is to transfer heat between hot and cold media, meeting the thermal management requirements of the motor, battery, and passenger compartment, thereby maintaining normal vehicle operation. Plate heat exchangers are constructed from multiple layers of parallel stacked metal stamping plates, resembling a bathtub (with internal structures including corrugations, convex ridges, and internal fins). Adjacent stamping plates are brazed at high temperatures to form sealed channels for the flow of the medium (refrigerant or coolant).

[0003] The heat pump air conditioning system is an important hub for the motor, battery, and passenger compartment. It includes components such as an electric compressor (COMP), a plate heat exchanger, an electronic expansion valve (EXV), a reservoir (Reservoir) or a gas-liquid separator (Accumulator), and connecting pipes (Pipe). Among them, the plate heat exchanger may include, for example, a battery cooler (Chiller), an intermediate heat exchanger (IHX), and a liquid-cooled condenser (LCC).

[0004] To meet vehicle miniaturization and lightweighting requirements, the industry often utilizes small-scale integrated modules. These modules involve placing multiple plate heat exchangers on a single bracket and connecting them via numerous connectors. At the same time, the distance between the plate heat exchangers is minimized to reduce the number of connecting pipes and brackets. However, securing plate heat exchangers of varying specifications on a given bracket still presents a trade-off between space and assembly requirements. Furthermore, manufacturing multiple plate heat exchanger specifications requires multiple sets of molds and production processes, which is costly and hinders the effectiveness of plate heat exchangers in air conditioning heat pump systems. Utility Model Content

[0005] In view of this, the present invention aims to provide a plate heat exchanger for a heat pump air conditioning system, so as to improve the application effect of the plate heat exchanger in the heat pump air conditioning system.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A plate heat exchanger for a heat pump air conditioning system, the plate heat exchanger comprising a plurality of plates stacked together in sequence, and having a battery cooler area, an intermediate heat exchanger area, and a liquid-cooled condenser area formed therein;

[0008] The battery cooler area and the liquid-cooled condenser area each have a coolant channel and a refrigerant channel capable of heat exchange, and the intermediate heat exchanger area has a plurality of refrigerant channels capable of heat exchange;

[0009] The refrigerant channel in the battery cooler area communicates with one of the refrigerant channels in the intermediate heat exchanger area to form a first refrigerant flow path, and the refrigerant channel in the liquid-cooled condenser area communicates with the other refrigerant channel in the intermediate heat exchanger area to form a second refrigerant flow path.

[0010] Furthermore, the plurality of plates are of the same type, and the battery cooler area, the intermediate heat exchanger area, and the liquid-cooled condenser area are sequentially arranged along the stacking direction of the plates;

[0011] An inlet and an outlet of the first refrigerant flow path are both located at the battery cooler area, and an inlet and an outlet of the second refrigerant flow path are both located at the liquid-cooled condenser area.

[0012] Furthermore, the plurality of plates are two types of plates, and the battery cooler area, the intermediate heat exchanger area, and the liquid-cooled condenser area are sequentially arranged along a first direction of the plate heat exchanger, and the first direction is perpendicular to the stacking direction of the plates;

[0013] An inlet and an outlet of the first refrigerant flow path are respectively located at the battery cooler area and the intermediate heat exchanger area, and an inlet and an outlet of the second refrigerant flow path are respectively located at the liquid-cooled condenser area and the intermediate heat exchanger area.

[0014] Furthermore, the plurality of plates are three types of plates, and the intermediate heat exchanger area and the battery cooler area are arranged sequentially along a first direction of the plate heat exchanger, and the liquid-cooled condenser area is located on the same side of the intermediate heat exchanger area and the battery cooler area along the stacking direction of the plates, and the first direction is perpendicular to the stacking direction of the plates;

[0015] An inlet and an outlet of the first refrigerant flow path are respectively located at the battery cooler area and the intermediate heat exchanger area, and an inlet and an outlet of the second refrigerant flow path are respectively located at the liquid-cooled condenser area and the intermediate heat exchanger area.

[0016] Furthermore, the plurality of plates are three types of plates, and the liquid-cooled condenser area and the intermediate heat exchanger area are arranged sequentially along a first direction of the plate heat exchanger, and the battery cooler area is located on the same side of the liquid-cooled condenser area and the intermediate heat exchanger area along the stacking direction of the plates, and the first direction is perpendicular to the stacking direction of the plates;

[0017] An inlet and an outlet of the first refrigerant flow path are respectively located at the battery cooler area and the intermediate heat exchanger area, and an inlet and an outlet of the second refrigerant flow path are respectively located at the liquid-cooled condenser area and the intermediate heat exchanger area.

[0018] Furthermore, the plurality of plates are three types of plates, and the intermediate heat exchanger area and the liquid-cooled condenser area are sequentially arranged along the stacking direction of the plates, and the battery cooler area is located on the same side of the intermediate heat exchanger area and the liquid-cooled condenser area along the first direction of the plate heat exchanger;

[0019] The first direction is perpendicular to the stacking direction of the plates, the battery cooler area includes two parts arranged sequentially along the stacking direction of the plates, and the refrigerant channels in the two parts of the battery cooler area are connected, and the coolant channels in the two parts of the battery cooler area are independent of each other;

[0020] An inlet and an outlet of the first refrigerant flow path are respectively located at the battery cooler area and the intermediate heat exchanger area, and an inlet and an outlet of the second refrigerant flow path are respectively located at the liquid-cooled condenser area and the intermediate heat exchanger area.

[0021] Furthermore, the plurality of plates are three types of plates, and the intermediate heat exchanger area and the battery cooler area are arranged sequentially along the stacking direction of the plates, and the liquid-cooled condenser area is located on the same side of the intermediate heat exchanger area and the battery cooler area along the first direction of the plate heat exchanger;

[0022] The first direction is perpendicular to the stacking direction of the plates, the liquid-cooled condenser area includes two parts arranged in sequence along the stacking direction of the plates, and the refrigerant channels in the two parts of the liquid-cooled condenser area are connected, and the cooling liquid channels in the two parts of the liquid-cooled condenser area are independent of each other;

[0023] An inlet and an outlet of the first refrigerant flow path are respectively located at the battery cooler area and the intermediate heat exchanger area, and an inlet and an outlet of the second refrigerant flow path are respectively located at the liquid-cooled condenser area and the intermediate heat exchanger area.

[0024] Furthermore, the plate heat exchanger is provided with a liquid reservoir or a gas-liquid separator, and the liquid reservoir or the gas-liquid separator is connected between the refrigerant channel in the liquid-cooled condenser area and the refrigerant channel in the intermediate heat exchanger area; and / or,

[0025] The plate heat exchanger is provided with an expansion valve, which communicates between the refrigerant channel in the intermediate heat exchanger area and the refrigerant channel in the battery cooler area.

[0026] Furthermore, at least part of the plates are provided with corrugated ridges; and / or,

[0027] At least part of the plates are provided with a bulge bulging toward one side of the plates; and / or,

[0028] Fins are provided between at least some of the adjacent plates.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The plate heat exchanger described in the present utility model integrates the battery cooler, the intermediate heat exchanger and the liquid-cooled condenser in the plate heat exchanger, thereby achieving zero-distance contact between the heat exchangers that constitute the battery cooler, the intermediate heat exchanger and the liquid-cooled condenser in the heat pump air-conditioning system. This can reduce the preparation cost of the heat exchange module in the system, reduce the overall space occupied by the heat exchange module, and also help to avoid assembly problems between different heat exchange modules, thereby improving the application effect of the plate heat exchanger in the heat pump air-conditioning system.

[0031] The present invention further provides a vehicle, wherein the vehicle is provided with a heat pump air-conditioning system, and the heat pump air-conditioning system adopts the plate heat exchanger for the heat pump air-conditioning system as described above.

[0032] The vehicle described in the present invention has the same beneficial effects as the plate heat exchanger for the heat pump air conditioning system described above compared to the prior art, so it will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic structural diagram of a first exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0035] Figure 2 This is a structural schematic diagram of a first plate of a first exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0036] Figure 3 This is a structural schematic diagram of a second exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram of a second plate structure of a second exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of a third plate structure of a second exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0039] Figure 6 This is a schematic structural diagram of a third exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0040] Figure 7 This is a schematic structural diagram of a fourth plate of a third exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the fifth plate of the third exemplary structure of the plate heat exchanger for the heat pump air conditioning system according to an embodiment of the present utility model

[0042] Figure 9 This is a schematic structural diagram of the sixth plate of the third exemplary structure of the plate heat exchanger for the heat pump air conditioning system according to an embodiment of the present utility model.

[0043] Figure 10 This is a schematic structural diagram of a fourth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0044] Figure 11 This is a structural schematic diagram of a seventh plate of a fourth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0045] Figure 12 This is a structural schematic diagram of an eighth plate of the fourth exemplary structure of the plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0046] Figure 13 This is a structural schematic diagram of a ninth plate of the fourth exemplary structure of the plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0047] Figure 14 This is a structural schematic diagram of a fifth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0048] Figure 15 This is a schematic structural diagram of the tenth plate of the fifth exemplary structure of the plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0049] Figure 16This is a structural schematic diagram of an eleventh plate of the fifth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0050] Figure 17 This is a schematic structural diagram of a twelfth plate of a fifth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0051] Figure 18 This is a schematic structural diagram of a sixth exemplary structure of a plate heat exchanger for a heat pump air-conditioning system according to an embodiment of the present utility model;

[0052] Figure 19 This is a schematic structural diagram of a thirteenth plate of the sixth exemplary structure of the plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0053] Figure 20 This is a structural schematic diagram of a fourteenth plate of a sixth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0054] Figure 21 This is a structural schematic diagram of a fifteenth plate of a sixth exemplary structure of a plate heat exchanger for a heat pump air conditioning system according to an embodiment of the present utility model;

[0055] Description of reference numerals:

[0056] 1. Battery cooler area; 2. Intermediate heat exchanger area; 3. Liquid-cooled condenser area; 4. First plate; 5. Second plate; 6. Third plate; 7. Fourth plate; 8. Fifth plate; 9. Sixth plate; 10. Seventh plate; 11. Eighth plate; 12. Ninth plate; 13. Tenth plate; 14. Eleventh plate; 15. Twelfth plate; 16. Thirteenth plate; 17. Fourteenth plate; 18. Fifteenth plate;

[0057] 501, first long partition bar; 502, first short partition bar; 601, second long partition bar; 602, second short partition bar; 701, third short partition bar; 801, third long partition bar; 901, fourth short partition bar; 1001, fifth short partition bar; 1101, fourth long partition bar; 1201, sixth short partition bar; 1301, seventh short partition bar; 1401, fifth long partition bar; 1501, sixth long partition bar; 1601, eighth short partition bar; 1701, seventh long partition bar; 1801, eighth long partition bar;

[0058] 19. First coolant inlet; 20. First coolant outlet; 21. Second coolant inlet; 22. Second coolant outlet; 23. First refrigerant inlet; 24. First refrigerant outlet; 25. Second refrigerant inlet; 26. Second refrigerant outlet;

[0059] a. First refrigerant flow path; b. Second refrigerant flow path. DETAILED DESCRIPTION

[0060] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0061] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0062] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0063] Furthermore, in the description of the present invention, unless otherwise expressly defined, the mating components may be connected using conventional connection structures in the art. Furthermore, the terms "install," "connect," "connect," and "connector" 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 or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0064] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0065] Example 1

[0066] This embodiment relates to a plate heat exchanger for an air-conditioning system, in order to improve the application effect of the plate heat exchanger in a heat pump air-conditioning system.

[0067] In terms of overall structure, combined Figure 1 As shown, the plate heat exchanger of this embodiment includes a plurality of plates stacked together in sequence, and a battery cooler area 1, an intermediate heat exchanger area 2 and a liquid-cooled condenser area 3 are formed in the plate heat exchanger.

[0068] The battery cooler area 1 and the liquid-cooled condenser area 3 both have coolant channels and refrigerant channels for heat exchange, while the intermediate heat exchanger area 2 has multiple refrigerant channels for heat exchange. The refrigerant channel in the battery cooler area 1 connects with one of the refrigerant channels in the intermediate heat exchanger area 2 to form a first refrigerant flow path a, while the refrigerant channel in the liquid-cooled condenser area 3 connects with another refrigerant channel in the intermediate heat exchanger area 2 to form a second refrigerant flow path b.

[0069] As set up above, the plate heat exchanger in this embodiment integrates the battery cooler, intermediate heat exchanger and liquid-cooled condenser into the plate heat exchanger, which can achieve zero-distance contact between the heat exchangers that constitute the battery cooler, intermediate heat exchanger and liquid-cooled condenser in the heat pump air-conditioning system. It can reduce the preparation cost of the heat exchange module in the system, reduce the overall space occupied by the heat exchange module, and also help to avoid assembly problems between different heat exchange modules, which is beneficial to improving the application effect of the plate heat exchanger in the heat pump air-conditioning system.

[0070] Based on the overall introduction above, the plates of the plate heat exchanger in this embodiment have various exemplary structures, and generally, the intermediate heat exchanger zone 2 may have, for example, two refrigerant channels capable of performing heat exchange.

[0071] Specifically, as the first exemplary structure, Figure 1 and combined Figure 2 As shown, the multiple plates of the plate heat exchanger in this embodiment are of the same type, and the battery cooler area 1, the intermediate heat exchanger area 2 and the liquid-cooled condenser area 3 are arranged in sequence along the stacking direction of the plates.

[0072] Among them, the inlet and outlet of the first refrigerant flow path a, that is, the first refrigerant inlet 23 and the first refrigerant outlet 24 are both located in the battery cooler area 1, and the inlet and outlet of the second refrigerant flow path b, that is, the first refrigerant inlet 25 and the first refrigerant outlet 26 are both located in the liquid-cooled condenser area 3.

[0073] More specifically, the first exemplary plate structure in this embodiment is a first plate 4. Multiple first plates 4 are stacked and welded together to form a sealed unit. The stacking direction of the subsequent first plate 4 is the same as the orientation of the previous plate after flipping 180°, and the corrugations of adjacent plates are staggered. The stacking of the multiple first plates 4 forms a battery cooler zone 1, an intermediate heat exchanger zone 2, and a liquid-cooled condenser zone 3, arranged sequentially along the stacking direction.

[0074] A partition is provided between the battery cooler area 1 and the intermediate heat exchanger area 2, and between the intermediate heat exchanger area 2, the battery cooler area 1, and the liquid-cooled condenser area 3. The partition separates the intermediate heat exchanger area 2 from the battery cooler area 1 and the liquid-cooled condenser area 3. Both the battery cooler area 1 and the liquid-cooled condenser area 3 have coolant flow channels. Coolant from the battery cooler area 1 flows in through a first coolant inlet 19 at the top of the battery cooler area 1, flows through the battery cooler area 1, and then flows out through a first coolant outlet 20 at the bottom of the battery cooler area 1. Coolant from the liquid-cooled condenser area 3 flows in through a second coolant inlet 21 at the bottom of the liquid-cooled condenser area 3, flows through the liquid-cooled condenser area 3, and then flows out through a second coolant outlet 22 at the top of the liquid-cooled condenser area 3.

[0075] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 at the bottom of the battery cooler area 1, it flows to the top of the battery cooler area 1, flows through the top of the battery cooler area 1, flows to the bottom of the battery cooler area 1, and after heat exchange with the coolant in the battery cooler area 1, flows through the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the bottom of the intermediate heat exchanger area 2. After flowing through the bottom of the intermediate heat exchanger area 2, it flows in the direction of the partition close to the intermediate heat exchanger area 2 and the liquid-cooled condenser area 3, flows to the top of the intermediate heat exchanger area 2, and after flowing through the top of the intermediate heat exchanger area 2, it becomes the second low-temperature and second low-pressure superheated gaseous first refrigerant, flows to the battery cooler area 1, and flows out from the first refrigerant outlet 24 at the top of the battery cooler area 1.

[0076] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 at the top of the liquid-cooled condenser area 3, it flows to the bottom of the liquid-cooled condenser area 3, flows through the bottom of the liquid-cooled condenser area 3, flows to the top of the liquid-cooled condenser area 3, flows through the liquid-cooled condenser area 3 and exchanges heat with the coolant in the liquid-cooled condenser area 3, and becomes the high-temperature and high-pressure saturated liquid second refrigerant, and flows to the top of the intermediate heat exchanger area 2. After flowing through the top of the intermediate heat exchanger area 2, it flows in the direction of the partition close to the intermediate heat exchanger area 2 and the battery cooler area 1, flows to the bottom of the intermediate heat exchanger area 2, and after flowing through the bottom of the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state, flows to the liquid-cooled condenser area 3, and flows out from the second refrigerant outlet 26 at the bottom of the liquid-cooled condenser area 3.

[0077] In this embodiment, the coolant flow channels of the battery cooler zone 1 and the liquid-cooled condenser zone 3 may, for example, be a one-flow structure, or a three-flow, five-flow, or even-flow structure. The refrigerant flow channels of the battery cooler zone 1 and the liquid-cooled condenser zone 3 may, for example, be a two-flow structure, or a four-flow, six-flow, or even-flow structure. The first and second refrigerant flow channels in the intermediate heat exchanger may, for example, be a one-flow structure, or a three-flow, five-flow, or odd-flow structure. The coolant flow channels and the refrigerant flow channels are not connected to each other.

[0078] As a second exemplary structure, combined Figures 3 to 5 As shown, the multiple plates of the plate heat exchanger in this embodiment use two types of plates, and the battery cooler area 1, the intermediate heat exchanger area 2 and the liquid-cooled condenser area 3 are arranged in sequence along the first direction of the plate heat exchanger, and the first direction is perpendicular to the stacking direction of the plates.

[0079] Among them, the inlet and outlet of the first refrigerant flow path a are respectively located at the battery cooler area 1 and the intermediate heat exchanger area 2, and the inlet and outlet of the second refrigerant flow path b are respectively located at the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2.

[0080] Specifically, the plates of the second exemplary structure in this embodiment include a second plate 5 and a third plate 6. When stacked, the second plate 5 and the third plate 6 form a battery cooler area 1, an intermediate heat exchanger area 2, and a liquid-cooled condenser area 3. A first long partition rib 501 is provided on the side of the second plate 5 near the liquid-cooled condenser area 3. The two ends of the first long partition rib 501 are respectively connected to the opposite side walls of the liquid-cooled condenser area 3. A first short partition rib 502 is provided on the side of the second plate 5 near the battery cooler area 1. One end of the first short partition rib 502 is connected to a side wall of the battery cooler area 1. In coordination with this, the second long partition rib 601 and the second short partition rib 602 of the third plate 6 are symmetrically arranged along the centerline of the intermediate heat exchanger area 2 with the first long partition rib 501 and the first short partition rib 502 of the second plate body. The second plate body and the third plate 6 are staggered and stacked and welded to form a sealed whole.

[0081] The coolant in the liquid-cooled condenser area 3 flows into the second coolant inlet 21 at the top of the liquid-cooled condenser area 3, flows toward the intermediate heat exchanger area 2, passes through the interior of the liquid-cooled condenser area 3, and then flows out of the second coolant outlet 22 at the top of the liquid-cooled condenser area 3. The coolant in the battery cooler area 1 flows into the first coolant inlet 19 at the top of the battery cooler area 1, flows toward the intermediate heat exchanger area 2, passes through the interior of the intermediate heat exchanger area 2, and then flows out of the first coolant outlet 20 at the top of the battery cooler area 1.

[0082] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 on the top side of the battery cooler area 1, it flows to the opposite side of the battery cooler area 1. After flowing through the opposite side of the battery cooler area 1, it exchanges heat with the coolant in the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows to the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it becomes the second low-temperature, second low-pressure superheated gaseous first refrigerant and flows out from the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2.

[0083] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 on the top side of the liquid-cooled condenser area 3, it flows to the opposite side of the liquid-cooled condenser area 3. After flowing through the opposite side of the liquid-cooled condenser area 3, it exchanges heat with the coolant in the liquid-cooled condenser area 3 and becomes the high-temperature and high-pressure saturated liquid second refrigerant and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows in the direction close to the second refrigerant inlet 25. After flowing through the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state and flows to the second refrigerant outlet 26 of the intermediate heat exchanger area 2 and flows out from the second refrigerant outlet 26 of the intermediate heat exchanger area 2.

[0084] As a third exemplary structure, combined Figures 6 to 9 As shown, the multiple plates of the plate heat exchanger in this embodiment use three types of plates, and the intermediate heat exchanger area 2 and the battery cooler area 1 are arranged in sequence along the first direction of the plate heat exchanger, and the liquid-cooled condenser area 3 is located on the same side of the intermediate heat exchanger area 2 and the battery cooler area 1 along the stacking direction of the plates. The first direction is perpendicular to the stacking direction of the plates.

[0085] Among them, the inlet and outlet of the first refrigerant flow path a are respectively located at the battery cooler area 1 and the intermediate heat exchanger area 2, and the inlet and outlet of the second refrigerant flow path b are respectively located at the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2.

[0086] Specifically, the plates of the third exemplary structure in this embodiment include a fourth plate 7, a fifth plate 8, and a sixth plate 9. A third short partition rib 701 is provided within the fourth plate 7, one end of which is connected to one side of the fourth plate 7. A third long partition rib 801 is provided within the fifth plate 8, with both ends of the third long partition rib 801 connected to opposite side walls of the fifth plate 8. The fourth and fifth plates 7, 8, are stacked alternately and welded together to form a sealed assembly, forming the intermediate heat exchanger section 2 and the battery cooler section 1. The sixth plate 9 is stacked below the fifth plate 8 along the stacking direction of the fourth and fifth plates 7, 8, forming the liquid-cooled condenser section 3.

[0087] Preferably, a fourth short partition rib 901 can be set in the sixth plate 9, and two sixth plates 9 can be staggered and stacked below the fifth plate 8 to form a liquid-cooled condenser area 3. At this time, when the second refrigerant flows through the liquid-cooled condenser area 3, it will bypass the fourth short partition rib 901, and when the coolant in the liquid-cooled condenser area 3 flows through the liquid-cooled condenser area 3, it will also bypass the fourth short partition rib 901.

[0088] The coolant in the liquid-cooled condenser zone 3 flows into the second coolant inlet 21 at the bottom of the liquid-cooled condenser zone 3, flows toward the side opposite to the second coolant inlet 21 of the liquid-cooled condenser zone 3, flows through the interior of the liquid-cooled condenser zone 3, and then flows out of the second coolant outlet 22 at the bottom of the liquid-cooled condenser zone 3. The coolant in the battery cooler zone 1 flows into the first coolant inlet 19 at the top of the battery cooler zone 1, flows toward the intermediate heat exchanger zone 2, flows through the interior of the intermediate heat exchanger zone 2, and then flows out of the first coolant outlet 20 at the top of the battery cooler zone 1.

[0089] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 on the top side of the battery cooler area 1, it flows to the opposite side of the battery cooler area 1. After flowing through the opposite side of the battery cooler area 1, it exchanges heat with the coolant in the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows to the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it becomes the second low-temperature, second low-pressure superheated gaseous first refrigerant and flows out from the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2.

[0090] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 on the bottom side of the liquid-cooled condenser area 3, it flows to the opposite side of the liquid-cooled condenser area 3. After flowing through the opposite side of the liquid-cooled condenser area 3, it exchanges heat with the coolant in the liquid-cooled condenser area 3 and becomes the high-temperature and high-pressure saturated liquid second refrigerant and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows in the direction close to the second refrigerant inlet 25. After flowing through the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state and flows to the second refrigerant outlet 26 of the intermediate heat exchanger area 2 and flows out from the second refrigerant outlet 26 of the intermediate heat exchanger area 2.

[0091] As a fourth exemplary structure, combined Figures 10 to 13 As shown, the multiple plates of the plate heat exchanger in this embodiment use three types of plates, and the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2 are arranged in sequence along the first direction of the plate heat exchanger. The battery cooler area 1 is located on the same side of the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2 along the stacking direction of the plates, and the first direction is perpendicular to the stacking direction of the plates.

[0092] Among them, the inlet and outlet of the first refrigerant flow path a are respectively located at the battery cooler area 1 and the intermediate heat exchanger area 2, and the inlet and outlet of the second refrigerant flow path b are respectively located at the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2.

[0093] Specifically, the plates of the fourth exemplary structure in this embodiment include a seventh plate 10, an eighth plate 11, and a ninth plate 12. The seventh plate 10 is provided with a fifth short partition rib 1001, one end of which is connected to one side of the seventh plate 10. The eighth plate 11 is provided with a fourth long partition rib 1101, the two ends of which are respectively connected to the two opposite side walls of the eighth plate 11. The seventh plate 10 and the eighth plate 11 are stacked alternately and welded into a sealed whole, forming the intermediate heat exchanger region 2 and the liquid-cooled condenser region 3. The ninth plate 12 is stacked below the eighth plate 11 along the stacking direction of the seventh plate 10 and the eighth plate 11 to form the battery cooler region 1. Preferably, a sixth short partition rib 1201 can be provided in the ninth plate 12, and two ninth plates 12 are stacked alternately below the eighth plate 11 to form the liquid-cooled condenser region 3.

[0094] The coolant in the battery cooler area 1 flows into the first coolant inlet 19 at the bottom of the battery cooler area 1, flows toward the side opposite to the first coolant inlet 19 of the battery cooler area 1, flows through the interior of the battery cooler area 1, and then flows out of the first coolant outlet 20 at the bottom of the battery cooler area 1. The coolant in the liquid-cooled condenser area 3 flows into the second coolant inlet 21 at the top of the liquid-cooled condenser area 3, flows toward the intermediate heat exchanger area 2, flows through the interior of the intermediate heat exchanger area 2, and then flows out of the second coolant outlet 22 at the top of the liquid-cooled condenser area 3.

[0095] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 on the bottom side of the battery cooler area 1, it flows to the opposite side of the battery cooler area 1. After flowing through the opposite side of the battery cooler area 1, it exchanges heat with the coolant in the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows to the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it becomes the second low-temperature, second low-pressure, superheated gaseous first refrigerant and flows out from the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2.

[0096] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 on the top side of the liquid-cooled condenser area 3, it flows to the opposite side of the liquid-cooled condenser area 3. After flowing through the opposite side of the liquid-cooled condenser area 3, it exchanges heat with the coolant in the liquid-cooled condenser area 3 and becomes the high-temperature and high-pressure saturated liquid second refrigerant and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows in the direction close to the second refrigerant inlet 25. After flowing through the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state and flows to the second refrigerant outlet 26 of the intermediate heat exchanger area 2 and flows out from the second refrigerant outlet 26 of the intermediate heat exchanger area 2.

[0097] As a fifth exemplary structure, combined Figures 14 to 17 As shown, the multiple plates of the plate heat exchanger in this embodiment use three types of plates, and the intermediate heat exchanger area 2 and the liquid-cooled condenser area 3 are arranged in sequence along the overlapping direction of the plates. The battery cooler area 1 is located on the same side of the intermediate heat exchanger area 2 and the liquid-cooled condenser area 3 along the first direction of the plate heat exchanger.

[0098] Among them, the first direction is perpendicular to the stacking direction of the plates, the battery cooler area 1 includes two parts arranged in sequence along the stacking direction of the plates, and the refrigerant channels in the two parts of the battery cooler area 1 are connected, and the coolant channels in the two parts of the battery cooler area 1 are independent of each other.

[0099] The inlet and outlet of the first refrigerant flow path a are respectively located at the battery cooler area 1 and the intermediate heat exchanger area 2 , and the inlet and outlet of the second refrigerant flow path b are respectively located at the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2 .

[0100] Specifically, the plates of the fifth exemplary structure in this embodiment include a tenth plate 13, an eleventh plate 14, and a twelfth plate 15. The tenth plate 13 is provided with a seventh short partition rib 1301, one end of which is connected to one side of the tenth plate 13. The eleventh plate 14 is provided with a fifth long partition rib 1401, the two ends of which are respectively connected to the two opposite side walls of the eleventh plate 14. The twelfth plate 15 is provided with a sixth long partition rib 1501, the two ends of which are respectively connected to the two opposite side walls of the twelfth plate 15. The tenth plate 13 and the eleventh plate 14 are staggered and stacked and welded into a sealed whole, forming the intermediate heat exchanger area 2 and the battery cooler area 1. The twelfth plate 15 is staggered and stacked below the tenth plate 13 along the stacking direction of the tenth plate 13 and the eleventh plate 14 to form the battery cooler area 1 and the liquid-cooled condenser area 3. The liquid-cooled condenser area 3 is located below the intermediate heat exchanger area 2.

[0101] The coolant in battery cooler zone 1 flows into the first coolant inlet 19 at the bottom and top of the battery cooler zone 1, flows toward the opposite side of the first coolant inlet 19 near the battery cooler zone 1, flows through the interior of the battery cooler zone 1, and then flows out of the first coolant outlet 20 at the top and bottom of the battery cooler zone 1, respectively. The coolant channels at the top and bottom of the battery cooler zone 1 are not interconnected. The coolant in liquid-cooled condenser zone 3 flows into the second coolant inlet 21 at the bottom of the liquid-cooled condenser zone 3, flows toward the second coolant outlet 22 near the bottom of the liquid-cooled condenser zone 3, flows through the interior of the liquid-cooled condenser zone 3, and then flows out of the second coolant outlet 22 at the bottom of the liquid-cooled condenser zone 3.

[0102] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 on the top side of the battery cooler area 1, it flows to the opposite side of the battery cooler area 1. After flowing through the opposite side of the battery cooler area 1, it exchanges heat with the coolant in the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows to the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it becomes the second low-temperature, second low-pressure superheated gaseous first refrigerant and flows out from the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2.

[0103] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 on the bottom side of the liquid-cooled condenser area 3, it flows to the opposite side of the liquid-cooled condenser area 3. After flowing through the opposite side of the liquid-cooled condenser area 3, it exchanges heat with the coolant in the liquid-cooled condenser area 3 and becomes the high-temperature and high-pressure saturated liquid second refrigerant and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows in the direction close to the second refrigerant inlet 25. After flowing through the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state and flows to the second refrigerant outlet 26 of the intermediate heat exchanger area 2 and flows out from the second refrigerant outlet 26 of the intermediate heat exchanger area 2.

[0104] As a sixth exemplary structure, combined Figures 18 to 21 As shown, the multiple plates of the plate heat exchanger in this embodiment use three types of plates, and the intermediate heat exchanger area 2 and the battery cooler area 1 are arranged in sequence along the overlapping direction of the plates, and the liquid-cooled condenser area 3 is located on the same side of the intermediate heat exchanger area 2 and the battery cooler area 1 along the first direction of the plate heat exchanger.

[0105] Among them, the first direction is perpendicular to the stacking direction of the plates, the liquid-cooled condenser area 3 includes two parts arranged in sequence along the stacking direction of the plates, and the refrigerant channels in the two parts of the liquid-cooled condenser area 3 are connected, and the cooling liquid channels in the two parts of the liquid-cooled condenser area 3 are independent of each other.

[0106] The inlet and outlet of the first refrigerant flow path a are respectively located at the battery cooler area 1 and the intermediate heat exchanger area 2 , and the inlet and outlet of the second refrigerant flow path b are respectively located at the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2 .

[0107] Specifically, the plates of the sixth exemplary structure in this embodiment include a thirteenth plate 16, a fourteenth plate 17, and a fifteenth plate 18. The thirteenth plate 16 is provided with an eighth short partition rib 1601, one end of which is connected to one side of the thirteenth plate 16. The fourteenth plate 17 is provided with a seventh long partition rib 1701, the two ends of which are respectively connected to two opposite side walls of the fourteenth plate 17. The fifteenth plate 18 is provided with an eighth long partition rib 1801, the two ends of which are respectively connected to two opposite side walls of the fifteenth plate 18. The thirteenth plate 16 and the fourteenth plate 17 are staggered and stacked and welded into a sealed whole to form an intermediate heat exchanger area 2 and a liquid-cooled condenser area 3. The fifteenth plate 18 is staggered and stacked below the thirteenth plate 16 along the stacking direction of the thirteenth plate 16 and the fourteenth plate 17 to form a battery cooler area 1 and a liquid-cooled condenser area 3. The battery cooler area 1 is located below the intermediate heat exchanger area 2.

[0108] The coolant in the liquid-cooled condenser area 3 flows into the second coolant inlet 21 at the bottom and top of the liquid-cooled condenser area 3, flows toward the opposite side of the second coolant inlet 21 near the liquid-cooled condenser area 3, flows through the interior of the liquid-cooled condenser area 3, and then flows out of the second coolant outlet 22 at the top and bottom of the liquid-cooled condenser area 3. The coolant channels at the top and bottom of the liquid-cooled condenser area 3 are not connected to each other. The coolant in the battery cooler area 1 flows into the first coolant inlet 19 at the bottom of the battery cooler area 1, flows toward the first coolant outlet 20 near the bottom of the battery cooler area 1, flows through the interior of the battery cooler area 1, and then flows out of the first coolant outlet 20 at the bottom of the battery cooler area 1.

[0109] After the low-temperature, low-pressure, two-phase liquid first refrigerant flows into the first refrigerant inlet 23 on the bottom side of the battery cooler area 1, it flows to the opposite side of the battery cooler area 1. After flowing through the opposite side of the battery cooler area 1, it exchanges heat with the coolant in the battery cooler area 1 and becomes the low-temperature, low-pressure, saturated gaseous first refrigerant, and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows to the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it becomes the second low-temperature, second low-pressure, superheated gaseous first refrigerant and flows out from the first refrigerant outlet 24 at the top of the intermediate heat exchanger area 2.

[0110] After the high-temperature and high-pressure superheated gaseous second refrigerant flows into the second refrigerant inlet 25 on the bottom side of the liquid-cooled condenser area 3, it flows to the opposite side of the liquid-cooled condenser area 3. After flowing through the opposite side of the liquid-cooled condenser area 3, it exchanges heat with the coolant in the liquid-cooled condenser area 3 and becomes the high-temperature and high-pressure saturated liquid second refrigerant and flows to the intermediate heat exchanger area 2. After flowing through the intermediate heat exchanger area 2, it flows in the direction close to the second refrigerant inlet 25. After flowing through the intermediate heat exchanger area 2, it becomes the second refrigerant in the second high-temperature and second-pressure supercooled liquid state and flows to the second refrigerant outlet 26 of the intermediate heat exchanger area 2 and flows out from the second refrigerant outlet 26 of the intermediate heat exchanger area 2.

[0111] Furthermore, to further enhance the application of the plate heat exchanger in the heat pump air conditioning system, the plate heat exchanger in this embodiment may be further provided with, for example, a liquid reservoir or gas-liquid separator. This liquid reservoir or gas-liquid separator utilizes an existing structure and is connected between the refrigerant channels in the liquid-cooled condenser section 3 and the refrigerant channels in the intermediate heat exchanger section 2. When the second refrigerant flows from the liquid-cooled condenser section 3 to the intermediate heat exchanger section 2, it first flows through the liquid reservoir or gas-liquid separator, and then flows to the intermediate heat exchanger section 2.

[0112] An expansion valve is provided on the plate heat exchanger, and the expansion valve is connected between the refrigerant channel in the intermediate heat exchanger area 2 and the refrigerant channel in the battery cooler area 1. The expansion valve in this embodiment is preferably an electronic expansion valve.

[0113] In addition, as a preferred implementation form, in the first exemplary structure to the sixth exemplary structure of this embodiment, for example, corrugated ridges extending in a wave-like manner can be provided on at least part of the plates, or bulges bulging toward one side of the plates, or fins can be provided between at least part of the adjacent plates.

[0114] The aforementioned corrugated ridges, raised bumps, and fins sandwiched between adjacent plates can all be conventional structures found in existing plate heat exchangers. In practice, it is also possible to simultaneously provide ridges and bumps on the plates, or to provide both ridges and bumps on the plates while also providing fins between adjacent plates. Furthermore, it is also possible to provide only ridges and bumps on the plates, or to provide both ridges and fins, or to provide both fins and bumps on the plates, without limitation.

[0115] The plate heat exchanger used in the heat pump air-conditioning system in this embodiment adopts the above design. By optimizing the internal structure of the plate heat exchanger, the positions of the battery cooler area 1, the liquid-cooled condenser area 3 and the intermediate heat exchanger area 2 are arranged more closely, which can reduce the preparation cost of the heat exchange module in the system and reduce the overall space occupied by the heat exchange module. At the same time, it can avoid assembly problems between different heat exchange modules, which is conducive to improving the application effect of the plate heat exchanger in the heat pump air-conditioning system.

[0116] Example 2

[0117] This embodiment relates to a vehicle, which is provided with a heat pump air-conditioning system. The heat pump air-conditioning system adopts the plate heat exchanger for the heat pump air-conditioning system in the first embodiment.

[0118] The vehicle in this embodiment, by adopting the plate heat exchanger for the heat pump air-conditioning system in Example 1, can achieve zero-distance contact between the heat exchangers that constitute the battery cooler, the intermediate heat exchanger and the liquid-cooled condenser in the heat pump air-conditioning system, which can reduce the preparation cost of the heat exchange module in the system and reduce the overall space occupied by the heat exchange module. It also helps to avoid assembly problems between different heat exchange modules, and is conducive to improving the application effect of the plate heat exchanger in the heat pump air-conditioning system.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A plate heat exchanger for a heat pump air conditioning system, characterized in that: The plate heat exchanger comprises a plurality of plates stacked together in sequence, and a battery cooler area (1), an intermediate heat exchanger area (2) and a liquid-cooled condenser area (3) are formed in the plate heat exchanger; The battery cooler area (1) and the liquid-cooled condenser area (3) both have a coolant channel and a refrigerant channel capable of performing heat exchange, and the intermediate heat exchanger area (2) has a plurality of refrigerant channels capable of performing heat exchange; The refrigerant channel in the battery cooler area (1) is connected to one of the refrigerant channels in the intermediate heat exchanger area (2) to form a first refrigerant flow path (a), and the refrigerant channel in the liquid-cooled condenser area (3) is connected to the other refrigerant channel in the intermediate heat exchanger area (2) to form a second refrigerant flow path (b).

2. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates are of the same type, and the battery cooler area (1), the intermediate heat exchanger area (2), and the liquid-cooled condenser area (3) are sequentially arranged along the stacking direction of the plates; The inlet and outlet of the first refrigerant flow path (a) are both located at the battery cooler area (1), and the inlet and outlet of the second refrigerant flow path (b) are both located at the liquid-cooled condenser area (3).

3. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates are two types of plates, and the battery cooler area (1), the intermediate heat exchanger area (2), and the liquid-cooled condenser area (3) are sequentially arranged along a first direction of the plate heat exchanger, wherein the first direction is perpendicular to the stacking direction of the plates; The inlet and outlet of the first refrigerant flow path (a) are respectively located at the battery cooler area (1) and the intermediate heat exchanger area (2), and the inlet and outlet of the second refrigerant flow path (b) are respectively located at the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2).

4. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates adopt three types of plates, and the intermediate heat exchanger area (2) and the battery cooler area (1) are arranged in sequence along a first direction of the plate heat exchanger, and the liquid-cooled condenser area (3) is located on the same side of the intermediate heat exchanger area (2) and the battery cooler area (1) along the stacking direction of the plates, and the first direction is perpendicular to the stacking direction of the plates; The inlet and outlet of the first refrigerant flow path (a) are respectively located at the battery cooler area (1) and the intermediate heat exchanger area (2), and the inlet and outlet of the second refrigerant flow path (b) are respectively located at the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2).

5. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates adopt three types of plates, and the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2) are arranged in sequence along a first direction of the plate heat exchanger, and the battery cooler area (1) is located on the same side of the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2) along the stacking direction of the plates, and the first direction is perpendicular to the stacking direction of the plates; The inlet and outlet of the first refrigerant flow path (a) are respectively located at the battery cooler area (1) and the intermediate heat exchanger area (2), and the inlet and outlet of the second refrigerant flow path (b) are respectively located at the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2).

6. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates adopt three types of plates, and the intermediate heat exchanger area (2) and the liquid-cooled condenser area (3) are arranged in sequence along the stacking direction of the plates, and the battery cooler area (1) is located on the same side of the intermediate heat exchanger area (2) and the liquid-cooled condenser area (3) along the first direction of the plate heat exchanger; The first direction is perpendicular to the stacking direction of the plates, the battery cooler area (1) comprises two parts arranged in sequence along the stacking direction of the plates, and the refrigerant channels in the two parts of the battery cooler area (1) are connected, and the coolant channels in the two parts of the battery cooler area (1) are independent of each other; The inlet and outlet of the first refrigerant flow path (a) are respectively located at the battery cooler area (1) and the intermediate heat exchanger area (2), and the inlet and outlet of the second refrigerant flow path (b) are respectively located at the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2).

7. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plurality of plates adopt three types of plates, and the intermediate heat exchanger area (2) and the battery cooler area (1) are arranged in sequence along the stacking direction of the plates, and the liquid-cooled condenser area (3) is located on the same side of the intermediate heat exchanger area (2) and the battery cooler area (1) along the first direction of the plate heat exchanger; The first direction is perpendicular to the stacking direction of the plates, the liquid-cooled condenser area (3) comprises two parts arranged in sequence along the stacking direction of the plates, and the refrigerant channels in the two parts of the liquid-cooled condenser area (3) are connected, and the cooling liquid channels in the two parts of the liquid-cooled condenser area (3) are independent of each other; The inlet and outlet of the first refrigerant flow path (a) are respectively located at the battery cooler area (1) and the intermediate heat exchanger area (2), and the inlet and outlet of the second refrigerant flow path (b) are respectively located at the liquid-cooled condenser area (3) and the intermediate heat exchanger area (2).

8. The plate heat exchanger for a heat pump air conditioning system according to claim 1, characterized in that: The plate heat exchanger is provided with a liquid reservoir or a gas-liquid separator, and the liquid reservoir or the gas-liquid separator is connected between the refrigerant channel in the liquid-cooled condenser area (3) and the refrigerant channel in the intermediate heat exchanger area (2); and / or, The plate heat exchanger is provided with an expansion valve, and the expansion valve is connected between the refrigerant channel in the intermediate heat exchanger area (2) and the refrigerant channel in the battery cooler area (1).

9. The plate heat exchanger for a heat pump air conditioning system according to any one of claims 1 to 8, characterized in that: At least part of the plates are provided with corrugated ridges; and / or, At least part of the plates are provided with a bulge bulging toward one side of the plates; and / or, Fins are provided between at least some of the adjacent plates.

10. A vehicle, characterized in that: The vehicle is provided with a heat pump air-conditioning system, and the heat pump air-conditioning system adopts the plate heat exchanger for the heat pump air-conditioning system according to any one of claims 1 to 9.

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