Heat exchange device and heat management system

Abstract

The utility model discloses a heat exchange device and a heat management system. The heat exchange device comprises a first end plate, a spacing plate sheet and a second end plate which are sequentially arranged along a first direction, and a plurality of heat exchange plate sheets are stacked between the first end plate and the spacing plate sheet along the first direction to form a battery cooling part; a plurality of heat exchange plates are stacked between the spacing plate and the second end plate in the first direction to form a middle heat exchange part; the first section of the first refrigerant channel is positioned in the battery cooling part and is not communicated with the cooling liquid channel, and the second section of the first refrigerant channel is positioned in the middle heat exchange part and is not communicated with the second refrigerant channel. The first refrigerant channel, the cooling liquid channel and the second refrigerant channel are all integrated in the heat exchange device, the first section and the second section of the first refrigerant channel are directly communicated, communication through an external pipeline is not needed, the flowing distance of low-pressure and low-temperature refrigerants is shortened, then the pressure loss of the low-pressure refrigerants is reduced, and the heat exchange efficiency is improved. And the suction pressure of the compressor and the comprehensive energy efficiency of the heat management system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a heat exchange device and a thermal management system. Background Art

[0002] In the battery thermal management system of new energy vehicles, the intermediate heat exchanger is a component that exchanges heat between high-temperature and high-pressure refrigerant and low-temperature and low-pressure refrigerant. Usually, the low-temperature and low-pressure gaseous refrigerant at the outlet of the evaporator and the high-temperature and high-pressure liquid refrigerant at the outlet of the condenser exchange heat with each other, so that the high-pressure liquid refrigerant is cooled to a supercooled state, and the low-pressure gaseous refrigerant becomes overheated due to absorbing the heat of the high-pressure liquid refrigerant. The intermediate heat exchanger can effectively improve the overall energy efficiency of the whole machine and enable the thermal management system to operate in a very low ambient temperature.

[0003] However, the deployment positions of various components in the thermal management system of new energy vehicles are relatively scattered, resulting in long pipelines, large pressure loss of low-pressure refrigerant, reduced compressor suction pressure, and affected the overall energy efficiency of the thermal management system. Due to the large temperature difference between various components, such as the condenser and the intermediate heat exchanger often have a higher temperature refrigerant, while the battery cooler has a lower temperature refrigerant, there is a large temperature difference between them. If the components are arranged too compactly, there is a high temperature exchange between the components, which affects the heat exchange efficiency of the original heat exchange components. Utility Model Content

[0004] The purpose of the present application is to provide a heat exchange device and a thermal management system to shorten the pipeline routing, reduce the pressure loss of the low-pressure refrigerant, increase the suction pressure of the compressor, and at the same time reduce the heat transfer effect between each other.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A heat exchange device, comprising:

[0007] A first end plate, a spacer plate, and a second end plate are sequentially arranged along a first direction, a plurality of heat exchange plates are stacked along the first direction between the first end plate and the spacer plate to form a battery cooling portion; a plurality of heat exchange plates are stacked along the first direction between the spacer plate and the second end plate to form an intermediate heat exchange portion;

[0008] The heat exchange device includes a first refrigerant channel, the battery cooling part includes a coolant channel, and the intermediate heat exchange part includes a second refrigerant channel. The first section of the first refrigerant channel is located in the battery cooling part and is not connected to the coolant channel, and the second section of the first refrigerant channel is located in the intermediate heat exchange part and is not connected to the second refrigerant channel.

[0009] When the heat exchange device provided by the utility model is applied, the coolant is made to flow through the coolant channel of the battery cooling part, the low-pressure and low-temperature refrigerant is made to flow through the first refrigerant channel, and the high-pressure and high-temperature refrigerant is made to flow through the second refrigerant channel. In this way, in the battery cooling part, the low-pressure and low-temperature refrigerant in the first section of the first refrigerant channel exchanges heat with the coolant in the coolant channel, and the low-pressure and low-temperature refrigerant absorbs the heat of the coolant to reduce the temperature of the coolant, and then the coolant with a lower temperature absorbs the heat of the battery, thereby achieving the purpose of cooling the battery. In the intermediate heat exchange part, the low-pressure and low-temperature refrigerant exchanges heat with the high-pressure and high-temperature refrigerant, so that the high-pressure and high-temperature liquid refrigerant is cooled and becomes a supercooled state, and the low-pressure and low-temperature gaseous refrigerant becomes an overheated state due to the absorption of the heat of the high-pressure and high-temperature liquid refrigerant, thereby effectively improving the overall energy efficiency of the whole machine, and allowing the thermal management system to operate in a very low ambient temperature.

[0010] However, in the above scheme, due to the influence of factors such as solid thermal conductivity, it is difficult to avoid the heat exchange process between the second refrigerant channel and the coolant channel, thereby reducing the cooling effect of the battery cooling part and affecting the heating effect of the first refrigerant in the intermediate heat exchanger, which in turn affects the overall energy efficiency of the whole machine.

[0011] In the heat exchange device provided by the utility model, the first refrigerant channel, the coolant channel and the second refrigerant channel are all integrated inside the heat exchange device, and the first section and the second section of the first refrigerant channel can be directly connected without being connected through an external pipeline, so that the flow distance of the low-pressure and low-temperature refrigerant is shortened, thereby reducing the pressure loss of the low-pressure refrigerant, and adding additional heat transfer thermal resistance between the coolant channel and the second refrigerant channel, such as adding more first refrigerant channels or reducing the heat transfer effect of the original refrigerant channels, reducing the heat transfer process between the cooling channel and the second refrigerant channel, and improving the compressor suction pressure and the comprehensive energy efficiency of the thermal management system.

[0012] In one implementation, in the battery cooling unit, the coolant channel and the first section of the first refrigerant channel are alternately arranged along a first direction; and / or,

[0013] In the intermediate heat exchange portion, the second refrigerant channel and the second section of the first refrigerant channel are alternately arranged along a first direction.

[0014] In one implementation, at least one layer of the first refrigerant channel is spaced between the coolant channel of the battery cooling unit and the second refrigerant channel of the intermediate heat exchange unit.

[0015] In an implementation, at least three layers of first refrigerant channels are spaced between the coolant channel of the battery cooling unit closest to the intermediate heat exchange unit and the second refrigerant channel of the battery cooling unit closest to the intermediate heat exchange unit.

[0016] In one implementation, a height of the first refrigerant channel between the coolant channel and the second refrigerant channel along the first direction is greater than a height of the first refrigerant channel at other positions along the first direction.

[0017] In one implementation, both sides of the partition plate along the first direction are inner walls of the first refrigerant channel.

[0018] In one implementation, a heat insulation layer is provided on the surface of the spacer plate.

[0019] In one implementation, the first end plate is provided with a coolant inlet, a coolant outlet, and a first refrigerant inlet, and the second end plate is provided with a first refrigerant outlet, a second refrigerant inlet, and a second refrigerant outlet.

[0020] In one implementation, the coolant inlet, the coolant outlet, the first refrigerant inlet, the first refrigerant outlet, the second refrigerant inlet and / or the second refrigerant outlet are provided with pipeline joints; and / or,

[0021] The first end plate and / or the second end plate is also fixedly provided with a connecting ear.

[0022] A thermal management system, such as the heat exchange device described in any one of the above.

[0023] Compared with the prior art, the beneficial effects of the thermal management system provided in the embodiment of the present application are the same as the beneficial effects of the above-mentioned heat exchange device, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of a heat exchange device provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of a heat exchange device provided in an embodiment of the present application from another angle;

[0027] Figure 3 A cross-sectional view of a heat exchange device provided in an embodiment of the present application;

[0028] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0029] Figure 5 A schematic diagram of the overall flow direction of the fluid in the heat exchange device provided in an embodiment of the present application;

[0030] Figure 6This is a schematic diagram of the arrangement of the first refrigerant channel, the coolant channel, and the second refrigerant channel along the first direction in the heat exchange device provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] 1-first end plate, 1a-coolant inlet, 1b-coolant outlet, 1c-first refrigerant inlet, 2-second end plate, 2a-connecting ear, 2b-second refrigerant inlet, 2c-second refrigerant outlet, 2d-first refrigerant outlet, 3-spacer plate, 4-heat exchange plate, 5-first refrigerant channel, 6-coolant channel, 7-second refrigerant channel, B-battery cooling part, C-intermediate heat exchange part. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the thermal management system of electric vehicles in the prior art, the low-pressure refrigerant channel of the battery cooler is connected to the low-pressure refrigerant channel of the intermediate heat exchanger through a pipeline, and the distance between the battery cooler and the intermediate heat exchanger is relatively long. The pipeline route between the low-pressure refrigerant channel of the battery cooler and the low-pressure refrigerant channel of the intermediate heat exchanger is relatively long, resulting in a large pressure loss of the low-pressure refrigerant, reducing the suction pressure of the compressor, and affecting the comprehensive energy efficiency of the thermal management system.

[0039] In view of the above, please refer to Figure 1-Figure 6 , the heat exchange device provided in the embodiment of the present application integrates the battery cooling part B and the intermediate heat exchange part C. Specifically, the heat exchange device includes a first end plate 1, a spacer plate 3 and a second end plate 2, and the first end plate 1, the spacer plate 3 and the second end plate 2 are arranged in sequence along the first direction. A plurality of heat exchange plates 4 are stacked between the first end plate 1 and the spacer plate 3 to form the battery cooling part B, that is, the plurality of heat exchange plates 4 between the first end plate 1 and the spacer plate 3 are stacked in sequence along the first direction, and the first end plate 1, the spacer plate 3 and the plurality of heat exchange plates 4 stacked between the two together form the battery cooling part B. Fluid channels are formed between adjacent heat exchange plates 4, and fluid channels are also formed between the heat exchange plates 4 and the first end plate 1 and between the heat exchange plates 4 and the spacer plate 3. The battery cooling part B includes a coolant channel 6, and the heat exchange device includes a first refrigerant channel 5, and the first section of the first refrigerant channel 5 is located in the battery cooling part B and is not connected to the coolant channel 6. That is, the first end plate 1, the spacer plate 3, and the plurality of heat exchange plates 4 stacked therebetween together form a coolant channel 6 and a first section of a first refrigerant channel 5. The coolant flows through the coolant channel 6, and the first refrigerant flows through the first section of the first refrigerant channel 5, thereby achieving heat exchange between the coolant and the first refrigerant. The coolant is used to exchange heat with the battery to cool the battery.

[0040] A plurality of heat exchange plates 4 are stacked between the spacer plate 3 and the second end plate 2 to form an intermediate heat exchange portion C, that is, the plurality of heat exchange plates 4 between the spacer plate 3 and the second end plate 2 are stacked in sequence along the first direction, and the spacer plate 3, the second end plate 2 and the plurality of heat exchange plates 4 stacked therebetween together form the intermediate heat exchange portion C. Fluid channels are formed between adjacent heat exchange plates 4, and fluid channels are also formed between the heat exchange plates 4 and the second end plate 2 and between the heat exchange plates 4 and the spacer plate 3. The intermediate heat exchange portion C includes a second refrigerant channel 7, and the second section of the first refrigerant channel 5 is located in the intermediate heat exchange portion C and is not connected to the second refrigerant channel 7. That is, the spacer plate 3, the second end plate 2 and the plurality of heat exchange plates 4 stacked therebetween together form the second refrigerant channel 7 and the second section of the first refrigerant channel 5. The second refrigerant flows through the second refrigerant channel 7, and the first refrigerant flows through the second section of the first refrigerant channel 5, thereby achieving heat exchange between the second refrigerant and the first refrigerant. The first refrigerant may be a low-pressure and low-temperature refrigerant, and the second refrigerant may be a high-pressure and high-temperature refrigerant.

[0041] When the heat exchange device provided by the utility model is applied, the coolant is made to flow through the coolant channel 6 of the battery cooling part B, the low-pressure low-temperature refrigerant is made to flow through the first refrigerant channel 5, and the high-pressure high-temperature refrigerant is made to flow through the second refrigerant channel 7. In this way, in the battery cooling part B, the low-pressure low-temperature refrigerant in the first section of the first refrigerant channel 5 exchanges heat with the coolant in the coolant channel 6, and the low-pressure low-temperature refrigerant absorbs the heat of the coolant to reduce the temperature of the coolant, and then the coolant with a lower temperature absorbs the heat of the battery, thereby achieving the purpose of cooling the battery. In the intermediate heat exchange part C, the low-pressure low-temperature refrigerant exchanges heat with the high-pressure high-temperature refrigerant, so that the high-pressure high-temperature liquid refrigerant is cooled and becomes a supercooled state, and the low-pressure low-temperature gaseous refrigerant becomes an overheated state due to the absorption of the heat of the high-pressure high-temperature liquid refrigerant, thereby effectively improving the overall energy efficiency of the whole machine, and allowing the thermal management system to operate at a very low ambient temperature.

[0042] In the heat exchange device provided by the utility model, the first refrigerant channel 5, the coolant channel 6 and the second refrigerant channel 7 are all integrated inside the heat exchange device, and the first section and the second section of the first refrigerant channel 5 can be directly connected without being connected through an external pipeline, so that the flow distance of the low-pressure and low-temperature refrigerant is shortened, thereby reducing the pressure loss of the low-pressure refrigerant, and adding additional heat transfer thermal resistance between the coolant channel and the second refrigerant channel, such as adding more first refrigerant channels or reducing the heat transfer effect of the original refrigerant channels, reducing the heat transfer process between the cooling channel and the second refrigerant channel, and improving the compressor suction pressure and the comprehensive energy efficiency of the thermal management system.

[0043] In a specific embodiment, if Figure 3As shown, in the battery cooling part B, the coolant channel 6 and the first section of the first refrigerant channel 5 are alternately arranged along the first direction. Specifically, one side of the heat exchange plate 4 in the battery cooling part B is the coolant channel 6 and the other side is the first section of the first refrigerant channel 5, so that the coolant and the first refrigerant flow through the two sides of the heat exchange plate 4 respectively to achieve heat exchange between the coolant and the first refrigerant. Along the first direction, a layer of the first refrigerant channel 5 is arranged between two adjacent layers of the coolant channel 6, and a layer of the coolant channel 6 is arranged between two adjacent layers of the first refrigerant channel 5, so as to increase the heat exchange area and heat exchange efficiency.

[0044] like Figure 3 As shown, in the intermediate heat exchange part C, the second refrigerant channel 7 and the second section of the first refrigerant channel 5 are alternately arranged along the first direction. Specifically, one side of the heat exchange plate 4 in the intermediate heat exchange part C is the second refrigerant channel 7 and the other side is the second section of the first refrigerant channel 5, so that the second refrigerant and the first refrigerant flow through the two sides of the heat exchange plate 4 respectively to achieve heat exchange between the second refrigerant and the first refrigerant. Along the first direction, a layer of the first refrigerant channel 5 is arranged between two adjacent layers of the second refrigerant, and a layer of the second refrigerant is arranged between two adjacent layers of the first refrigerant channel 5, so as to increase the heat exchange area and heat exchange efficiency.

[0045] like Figure 5 and Figure 6 As shown, in the above scheme, due to the influence of factors such as solid thermal conductivity, and the large temperature difference between the coolant and the high-pressure and high-temperature refrigerant, it is difficult to avoid the heat exchange process between the second refrigerant channel and the coolant channel, thereby reducing the cooling effect of the battery cooling part, and affecting the heating effect of the first refrigerant in the intermediate heat exchanger, which in turn affects the overall energy efficiency of the whole machine. In view of the above situation, the coolant channel 6 of the battery cooling part B and the second refrigerant channel 7 of the intermediate heat exchange part C can be separated by at least one layer of the first refrigerant channel 5. In this way, the coolant channel 6 and the second refrigerant channel 7 are separated by the first refrigerant channel 5, and the coolant and the high-pressure and high-temperature refrigerant are separated by a low-pressure and low-temperature refrigerant, which can prevent the coolant from directly exchanging heat with the high-pressure and high-temperature refrigerant, thereby ensuring the refrigeration function of the battery cooling part B for the battery.

[0046] In the above embodiment, there are at least three layers of first refrigerant channels 5 between the coolant channel 6 of the battery cooling part B closest to the intermediate heat exchange part C and the second refrigerant channel 7 of the battery cooling part B closest to the intermediate heat exchange part C. Such an arrangement further ensures the cooling function of the battery cooling part B for the battery, and at the same time facilitates the flow direction setting of the first refrigerant channel 5. Of course, there may also be one, two, four or more layers of first refrigerant channels 5 between the coolant channel 6 of the battery cooling part B and the second refrigerant channel 7 of the intermediate heat exchange part C.

[0047] Preferably, if Figure 4As shown, both sides of the spacer plate 3 along the first direction are the inner walls of the first refrigerant channel 5. That is, both sides of the spacer plate 3 are the first refrigerant channel 5, and the low-pressure and low-temperature refrigerant flows through the two side surfaces of the spacer plate 3, so that the coolant channel 6 of the battery cooling part B and the second refrigerant channel 7 of the intermediate heat exchange part C are separated by at least two layers of the first refrigerant channel 5, further preventing the coolant from directly exchanging heat with the high-pressure and high-temperature refrigerant, thereby improving the refrigeration function of the battery cooling part B for the battery. Of course, one side of the spacer plate 3 can also be the inner wall of the first refrigerant channel 5, and the other side can be the inner wall of the coolant channel 6 or the inner wall of the second refrigerant channel 7, which is not limited here.

[0048] In addition, the height of the first refrigerant channel 5 between the coolant channel 6 and the second refrigerant channel 7 along the first direction is greater than the height of the first refrigerant channel 5 at other locations along the first direction. Specifically, the height of the first refrigerant channel 5 adjacent to the spacing plate 3 along the first direction can be greater than the height of the first refrigerant channel 5 adjacent to the heat exchange plate 4 along the first direction. In this way, the distance between the coolant channel 6 of the battery cooling part B and the second refrigerant channel 7 of the intermediate heat exchange part C is larger, further preventing the coolant from directly exchanging heat with the high-pressure and high-temperature refrigerant, and improving the cooling function of the battery cooling part B for the battery. Of course, the height of the first refrigerant channel 5 between the coolant channel 6 and the second refrigerant channel 7 along the first direction can also be equal to the height of the first refrigerant channel 5 at other locations along the first direction, so as to facilitate processing and manufacturing.

[0049] In another embodiment, in order to further prevent the coolant from exchanging heat with the high-pressure and high-temperature refrigerant, a heat insulating layer may be provided on the surface of the spacer plate 3, and the heat insulating layer may be a glass fiber layer, an asbestos layer, a rock wool layer, a silicate layer, etc. The heat insulating layer may be fixed to the surface of the spacer plate 3 by bonding.

[0050] In order to facilitate the communication of fluids, the first end plate 1 is provided with a coolant inlet 1a, a coolant outlet 1b and a first refrigerant inlet 1c, and the second end plate 2 is provided with a first refrigerant outlet 2d, a second refrigerant inlet 2b and a second refrigerant outlet 2c. The two ends of the coolant channel 6 are respectively connected to the coolant inlet 1a and the coolant outlet 1b. The two ends of the first refrigerant channel 5 are respectively connected to the first refrigerant inlet 1c and the first refrigerant outlet 2d. The two ends of the second refrigerant channel 7 are respectively connected to the second refrigerant inlet 2b and the second refrigerant outlet 2c. In this way, the first refrigerant first flows through the battery cooling part B and then flows through the intermediate heat exchange part C.

[0051] In order to facilitate the connection with the external pipeline, pipe joints are provided at the coolant inlet 1a, the coolant outlet 1b, the first refrigerant inlet 1c, the first refrigerant outlet 2d, the second refrigerant inlet 2b and / or the second refrigerant outlet 2c, so that the external pipeline is connected to the coolant channel 6, the first refrigerant channel 5 or the second refrigerant channel 7 through the pipe joints.

[0052] The first end plate 1 and / or the second end plate 2 are also fixedly provided with connecting ears 2a, so that the heat exchange device as a whole can be fixed together with other components through the connecting ears 2a and bolts. Of course, the heat exchange device as a whole can also be fixedly installed in other ways, which are not limited here.

[0053] In addition, the embodiment of the present application also provides a thermal management system, which includes the heat exchange device provided by any of the above embodiments. Compared with the prior art, the beneficial effects of the thermal management system provided by the embodiment of the present application are the same as the beneficial effects of the above heat exchange device, which will not be repeated here.

[0054] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0055] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A heat exchange device, characterized in that: include: A first end plate, a spacer plate, and a second end plate are sequentially arranged along a first direction, a plurality of heat exchange plates are stacked along the first direction between the first end plate and the spacer plate to form a battery cooling portion; a plurality of heat exchange plates are stacked along the first direction between the spacer plate and the second end plate to form an intermediate heat exchange portion; The heat exchange device includes a first refrigerant channel, the battery cooling part includes a coolant channel, and the intermediate heat exchange part includes a second refrigerant channel. The first section of the first refrigerant channel is located in the battery cooling part and is not connected to the coolant channel, and the second section of the first refrigerant channel is located in the intermediate heat exchange part and is not connected to the second refrigerant channel.

2. The heat exchange device according to claim 1, characterized in that: In the battery cooling unit, the coolant channel and the first section of the first refrigerant channel are alternately arranged along a first direction; and / or, In the intermediate heat exchange portion, the second refrigerant channel and the second section of the first refrigerant channel are alternately arranged along a first direction.

3. The heat exchange device according to claim 1, characterized in that: There is at least one layer of the first refrigerant channel between the coolant channel of the battery cooling unit and the second refrigerant channel of the intermediate heat exchange unit.

4. The heat exchange device according to claim 3, characterized in that: At least three layers of first refrigerant channels are spaced between the coolant channel of the battery cooling part closest to the intermediate heat exchange part and the second refrigerant channel of the battery cooling part closest to the intermediate heat exchange part.

5. The heat exchange device according to claim 3 or 4, characterized in that: The height of the first refrigerant channel between the coolant channel and the second refrigerant channel along the first direction is greater than the height of the first refrigerant channels at other positions along the first direction.

6. The heat exchange device according to claim 4, characterized in that: Both sides of the partition plate along the first direction are inner walls of the first refrigerant channel.

7. The heat exchange device according to claim 1, characterized in that: A heat insulation layer is provided on the surface of the spacer plate.

8. The heat exchange device according to claim 1, characterized in that: The first end plate is provided with a coolant inlet, a coolant outlet and a first refrigerant inlet, and the second end plate is provided with a first refrigerant outlet, a second refrigerant inlet and a second refrigerant outlet.

9. The heat exchange device according to claim 8, characterized in that: The coolant inlet, the coolant outlet, the first refrigerant inlet, the first refrigerant outlet, the second refrigerant inlet and / or the second refrigerant outlet are provided with pipeline joints; and / or, The first end plate and / or the second end plate is also fixedly provided with a connecting ear.

10. A thermal management system, characterized in that: A heat exchange device as claimed in any one of claims 1 to 9.

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