CN220527012U - Battery Thermal Management System - Google Patents

Abstract

The utility model discloses a battery thermal management system. The battery thermal management system includes: a first pipeline unit, a compression heat exchange unit, a first heat exchanger, a first heat exchange unit and a first valve member; The heat exchanger includes a first heat exchange part and a second heat exchange part. The compression heat exchange unit is connected to the first heat exchange part, and the first pipeline unit is connected to the second heat exchange part. The first heat exchange unit includes a dry cooling pipeline. and a dry cooler; the dry cooling pipeline is directly or indirectly connected to the first pipeline unit through the first valve member. When the first valve member is in the first state, the dry cooling pipeline is connected to the first pipeline unit, and the first valve member is in the third state. In the second state, the dry cooling pipeline is disconnected from the first pipeline unit. In the battery thermal management system of the present invention, when the outside temperature is low, the battery can be dissipated only through the first heat exchange unit, and the entire system has high energy efficiency throughout the year.

Description

Battery Thermal Management System

Technical field

The utility model relates to the field of battery thermal management, specifically to a battery thermal management system.

Background technique

The battery thermal management system generally refers to the air conditioning system that exchanges heat for the battery. In related technologies, the air conditioning system often uses single-cooling compression refrigeration to exchange heat for the battery. The above air conditioning system has the following problems in its application: due to the The charging and discharging processes require heat dissipation. The air conditioning system spends most of its time dissipating heat from the energy storage battery through compression and refrigeration, resulting in high power consumption and low energy efficiency of the whole machine throughout the year.

Utility model content

An embodiment of the present invention proposes a battery thermal management system. The battery thermal management system includes a variety of heat exchange modes and has high energy efficiency when exchanging heat for the battery.

The battery thermal management system of the embodiment of the present invention includes: a first pipeline unit, a compression heat exchange unit, a first heat exchanger, a first heat exchange unit and a first valve member. The first pipeline unit can The battery performs heat exchange; the first heat exchanger includes a first heat exchange part and a second heat exchange part, the compression heat exchange unit is connected to the first heat exchange part, and the first pipeline unit is connected to the first heat exchange part. The second heat exchange part is connected, and the first heat exchanger is configured to perform heat exchange between the first pipeline unit and the compression heat exchange unit; the first heat exchange unit includes a dry cooling pipeline and a dry cooler, the dry cooler is provided in the dry cooling pipeline; the first valve member is directly or indirectly connected to the dry cooling pipeline and the first pipeline unit, and the first valve member includes a first state and the second state. When the first valve member is in the first state, the dry cooling pipeline is connected to the first pipeline unit. When the first valve member is in the second state, the dry cooling pipeline Disconnect from the first pipeline unit.

The battery thermal management system of the embodiment of the present invention can dissipate heat to the battery only through the first heat exchange unit when the outside temperature is low, reducing energy consumption; through the cooperative use of the compression heat exchange unit and the first heat exchange unit, The entire system has high year-round energy efficiency. In addition, through the arrangement of the first valve, the dry cooling pipeline can be connected or disconnected from the first heat exchange unit. When the first heat exchange unit is not used, the dry cooler is not connected to the first pipeline unit, which reduces the cost of the first pipe. The flow resistance in the road unit has an energy-saving effect.

In some embodiments, the battery thermal management system further includes a heating unit, the heating unit is provided in the first pipeline unit, and an interface of the heating unit is directly connected to the first heat exchanger. Or indirectly connected, another interface of the heating unit is directly or indirectly connected to the battery; the heating unit can perform heating.

In some embodiments, the battery thermal management system further includes a dehumidification unit connected to the compression heat exchange unit;

The compression heat exchange unit includes a refrigerant pipeline, a compressor, a condenser and an expansion valve. The refrigerant pipeline is connected to the first heat exchange part. The compressor, the condenser and the expansion valve The expansion valve is connected in series to the refrigerant pipeline. The dehumidification unit can reduce the air humidity in the battery compartment. Specifically, the refrigerant of the compression heat exchange unit can flow through the dehumidification unit. The air exchanges heat with the refrigerant in the dehumidification unit. The refrigerant evaporates and takes away the heat in the air to reduce the humidity. Its temperature, when the temperature of the air drops below the dew point temperature, the water vapor in it condenses out, and the air humidity is reduced. The dehumidification unit is arranged on the rear side of the first heat exchanger. The refrigerant first flows through the first heat exchanger and then flows through the dehumidification unit, which will not affect the water temperature of the first pipeline unit.

In some embodiments, the dehumidification unit includes a dehumidification pipeline and a dehumidification component. The dehumidification component is provided in the dehumidification pipeline. The dehumidification pipeline is connected in parallel with the refrigerant pipeline. One end is connected to the outlet of the condenser, and the other end is connected to the inlet of the compressor.

In some embodiments, the dehumidification unit is connected in series to the refrigerant pipeline, one end of the dehumidification unit is connected to the first heat exchanger, and the other end is connected to the inlet of the compressor;

The dehumidification unit includes a throttling member and a dehumidification evaporator, and the throttling member is located between the first heat exchanger and the dehumidification evaporator.

In some embodiments, the battery thermal management system includes a second valve member, one interface of the second valve member is connected to the inlet of the throttling member, and the other interface is connected to the outlet of the dehumidification evaporator. at.

In some embodiments, the battery thermal management system includes a third valve member, one interface of the third valve member is connected to the inlet of the second heat exchange part, and the other interface is connected to the second heat exchanger part. The exit of the hot part.

In some embodiments, the battery thermal management system further includes a cabin, the battery is located in the cabin, the dehumidification unit is at least partially installed in the cabin, and the dehumidification unit is configured to Dehumidify at least part of the body.

In some embodiments, the battery thermal management system further includes a DCDC/PCS cooling unit, the DCDC/PCS cooling unit is connected to the dry cooler, and the DCDC/PCS cooling unit is capable of cooling the DCDC module and/or the PCS module. ;

One end of the DCDC/PCS cooling unit is connected to the inlet of the dry cooler, and the other end is connected to the outlet of the dry cooler.

In some embodiments, the battery thermal management system includes a first one-way valve, the DCDC/PCS cooling unit is connected in series to the dry cooling pipeline, and the DCDC/PCS cooling unit is located at the first one-way valve. Between the inlet of the dry cooler;

One end of the first one-way valve is connected to the inlet of the DCDC/PCS cooling unit, and the other end is connected to the outlet of the dry cooler.

Description of drawings

Figure 1 is a schematic structural diagram of Embodiment 1 of the battery thermal management system of the present invention.

Figure 2 is a schematic diagram of cooling mode 1 of Embodiment 1 of the battery thermal management system of the present invention.

Figure 3 is a schematic diagram of cooling mode 2 of Embodiment 1 of the battery thermal management system of the present invention.

Figure 4 is a schematic diagram of cooling mode three of Embodiment 1 of the battery thermal management system of the present invention.

Figure 5 is a schematic diagram of the heating mode of Embodiment 1 of the battery thermal management system of the present invention.

Figure 6 is a schematic diagram of the dehumidification mode of Embodiment 1 of the battery thermal management system of the present invention.

Figure 7 is a schematic structural diagram of Embodiment 2 of the battery thermal management system of the present invention.

Figure 8 is a schematic structural diagram of Embodiment 3 of the battery thermal management system of the present invention.

Figure 9 is a schematic structural diagram of Embodiment 4 of the battery thermal management system of the present invention.

Figure 10 is a schematic diagram of working mode 1 of the fifth embodiment of the battery thermal management system of the present invention.

Figure 11 is a schematic diagram of the second working mode of the battery thermal management system of Embodiment 5 of the present invention.

Figure 12 is a schematic structural diagram of Embodiment 6 of the battery thermal management system of the present invention.

Figure 13 is a schematic diagram of working mode 1 of Embodiment 6 of the battery thermal management system of the present invention.

Figure 14 is a schematic diagram of the second working mode of the battery thermal management system of Embodiment 6 of the present invention.

Figure 15 is a schematic diagram of working mode 3 of Embodiment 6 of the battery thermal management system of the present invention.

Figure 16 is a schematic structural diagram of Embodiment 7 of the battery thermal management system of the present invention.

Figure 17 is a schematic diagram of working mode 1 of Embodiment 7 of the battery thermal management system of the present invention.

Figure 18 is a schematic diagram of the second working mode of the battery thermal management system according to Embodiment 7 of the present invention.

Figure 19 is a schematic diagram of working mode 3 of Embodiment 7 of the battery thermal management system of the present invention.

Reference signs:

1. First pipeline unit; 11. First water pump; 12. Expansion tank; 13. Pressure relief valve; 14. Water supply tank; 15. Water supply pump; 16. Second one-way valve; 2. Compression heat exchange unit ; 21. Refrigerant pipeline; 22. Compressor; 23. Condenser; 24. Expansion valve; 3. First heat exchanger; 4. First heat exchange unit; 41. Dry cooling pipeline; 42. Dry cooler; 5. First valve; 6. Heating unit; 7. Dehumidification unit; 71. Dehumidification pipeline; 72. Throttle; 73. Dehumidification evaporator; 8. Second valve; 9. Third valve; 10. DCDC/PCS cooling unit; 101. Second water pump; 102. First one-way valve.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to explain the present invention, but should not be understood as limiting the present invention.

As shown in Figures 1 to 19, the battery thermal management system of the embodiment of the present invention includes: a first pipeline unit 1, a compression heat exchange unit 2, a first heat exchanger 3, a first heat exchange unit 4 and a third A valve member 5.

The first pipeline unit 1 can heat exchange the battery; the first heat exchanger 3 includes a first heat exchange part and a second heat exchange part, the compression heat exchange unit 2 is connected to the first heat exchange part, and the first pipeline The unit 1 is connected to the second heat exchange part, and the first heat exchanger 3 can perform heat exchange between the first pipeline unit 1 and the compression heat exchange unit 2 . Specifically, the first pipeline unit 1 is connected between the battery and the second heat exchange part of the first heat exchanger 3. The first heat exchanger 3 may be a plate heat exchanger, and the compression heat exchange unit 2 is connected to the second heat exchanger. The first heat exchange part of a heat exchanger 3. The first pipeline unit 1 may be provided with cooling liquid, such as water, and the cooling liquid circulates between the second heat exchange part and the battery through the first water pump 11 provided on the first pipeline unit 1. Compression heat exchange unit 2. It can produce cold energy, and the cold energy is transferred to the battery through the coolant to dissipate heat from the battery.

The first heat exchange unit 4 includes a dry cooling pipeline 41 and a dry cooler 42. The dry cooler 42 is provided in the dry cooling pipeline 41; the first valve 5 is directly or indirectly connected to the dry cooling pipeline 41 and the first pipeline unit 1. The valve member 5 includes a first state and a second state. When the first valve member 5 is in the first state, the dry cooling pipeline 41 is connected to the first pipeline unit 1. When the first valve member 5 is in the second state, the dry cooling pipeline 41 is disconnected from the first pipeline unit 1 . Specifically, the first valve 5 can be a three-way valve, the first interface of the three-way valve is connected to the first water pump 11, the second interface is connected to the inlet of the first heat exchanger 3, and one end of the dry cooling pipeline 41 is connected to the three-way valve. The third interface of the through valve is connected, and the other end is connected with the inlet of the first heat exchanger 3 . When the dry cooling pipeline 41 is connected to the first pipeline unit 1 , the dry cooler 42 can cool the cooling liquid in the first pipeline unit 1 , and the cooled liquid flows to the battery to dissipate heat from the battery. As shown in Figures 2-4, the battery thermal management system of the embodiment of the present invention includes three cooling modes.

Refrigeration mode 1: When the outside temperature is greater than the inlet water temperature on the battery side, the compression heat exchange unit 2 works and produces cold energy. The flow direction of the coolant in the first pipeline unit 1 is: battery - first water pump 11 - first Valve 5 - first heat exchanger 3 - battery.

Refrigeration mode 2: When the outside temperature is lower than the battery side inlet water temperature, the compression heat exchange unit 2 and the first heat exchange unit 4 work at the same time to produce cold energy. The flow direction of the coolant in the first pipeline unit 1 is: battery - First water pump 11 - first valve 5 - dry cooler 42 - first heat exchanger 3 - battery. In this mode, the coolant is first cooled by the dry cooler 42, and then replenishes the cooling capacity through the compression heat exchange unit 2. The load of the compressor 22 is reduced, and the system energy efficiency is improved.

Refrigeration mode three: When the outside temperature is low enough that the first heat exchange unit 4 can meet the heat dissipation needs of the battery, the compression heat exchange unit 2 is closed, the first heat exchange unit 4 works, and the flow direction of the coolant in the first pipeline unit 1 It is: battery - first water pump 11 - first valve 5 - dry cooler 42 - first heat exchanger 3 - battery. In this mode, the compression heat exchange unit 2 does not work, which reduces the energy consumption of the entire system. At the same time, the problem of low-frequency operation and difficulty of the compressor 22 is avoided, and the reliability of the system is improved. In the battery thermal management system of the embodiment of the present invention, both the compression heat exchange unit and the first heat exchange unit can exchange heat with the first pipeline unit to realize heat dissipation of the battery. When the outside temperature is higher than the battery side inlet water temperature, the dry cooling pipeline is not connected to the first pipeline unit, and the battery is only dissipated through the compression heat exchange unit; when the outside temperature is lower than the battery side inlet water temperature, the dry cooling pipeline is connected to the first pipeline unit. The first pipeline unit is connected, and the compression heat exchange unit and the first heat exchange unit dissipate heat to the battery at the same time; when the external temperature is so low that the first heat exchange unit can meet the heat dissipation needs of the battery, only the first heat exchange unit is used to dissipate heat. The battery dissipates heat.

Compared with the single-cooling compression refrigeration battery thermal management system in the related art, the battery thermal management system in the embodiment of the present invention only dissipates heat to the battery through the first heat exchange unit when the external temperature is low, thus avoiding the compressor startup. When outage causes large pressure fluctuations in the system and difficulty in returning oil to the compressor, the reliability of the system is better; through the combined use of the compression heat exchange unit and the first heat exchange unit, the entire system has high energy efficiency throughout the year. . In addition, through the arrangement of the first valve, the dry cooling pipeline can be connected or disconnected from the first heat exchange unit, so that when the first heat exchange unit is not used, the dry cooler is not connected to the first pipeline unit, reducing the first heat exchange unit. The flow resistance in the pipeline unit has the effect of energy saving.

In some embodiments, as shown in Figure 5, the battery thermal management system also includes a heating unit 6. The heating unit 6 is provided in the first pipeline unit 1. Specifically, the inlet of the heating unit 6 exchanges heat with the first The heater 3 is directly or indirectly connected, and the outlet of the heating unit 6 is directly or indirectly connected to the battery; the heating unit 6 can perform heating. Specifically, the heating unit 6 can be an electric heater connected in series to the first pipeline unit 1. In some low-temperature environments, the battery can be heated by the heating unit 6 so that the battery can operate normally. In the heating mode, the compression heat exchange unit 2 and the first heat exchange unit 4 are closed, the heating unit 6 is working, and the flow direction of the coolant in the first pipeline unit 1 is: battery - first water pump 11 - first Valve 5 - first heat exchanger 3 - electric heater - battery.

In some embodiments, as shown in Figure 6, the battery thermal management system also includes a dehumidification unit 7, which is connected to the compression heat exchange unit 2; the compression heat exchange unit 2 includes a refrigerant pipeline 21, a compressor 22 , condenser 23 and expansion valve 24, the refrigerant pipeline 21 is connected to the first heat exchange part, the compressor 22, the condenser 23 and the expansion valve 24 are connected in series to the refrigerant pipeline 21. The dehumidification unit 7 includes a dehumidification pipeline 71 and a dehumidification component. The dehumidification component is provided in the dehumidification pipeline 71. The dehumidification pipeline 71 is connected in parallel with the refrigerant pipeline 21. One end of the dehumidification pipeline 71 is connected to the outlet of the condenser 23, and the other end is connected to the outlet of the condenser 23. at the inlet of compressor 22.

Specifically, the dehumidification unit 7 can be connected to the compression heat exchange unit 2 through a solenoid valve. When the humidity in the battery compartment is relatively high, the dehumidification unit 7 can be turned on. In the dehumidification mode, the flow direction of the refrigerant is divided into two paths. One path is compression and refrigeration: compressor 22-condenser 23-expansion valve 24-first heat exchanger 3-compressor 22; the other path is dehumidification: compressor 22-condensation. Device 23 - solenoid valve - dehumidification unit 7 - compressor 22.

Setting up the dehumidification unit 7 can reduce the air humidity in the battery compartment. Specifically, the refrigerant of the compression heat exchange unit 2 can flow through the dehumidification unit 7, and the air exchanges heat with the refrigerant in the dehumidification unit 7, and the refrigerant evaporates and takes away the air. When the temperature of the air drops below the dew point temperature, the water vapor in it condenses out and the air humidity is reduced. The dehumidification unit 7 can be arranged on the rear side of the first heat exchanger 3. The refrigerant first flows through the first heat exchanger 3 and then flows through the dehumidification unit 7 without affecting the water temperature of the first pipeline unit.

In some embodiments, as shown in FIG. 7 , the dehumidification unit 7 is connected in series to the refrigerant pipeline 21 , one end of the dehumidification unit 7 is connected to the first heat exchanger 3 , and the other end is connected to the inlet of the compressor 22 . The dehumidification unit 7 is arranged downstream of the first heat exchanger 3, and its evaporation temperature is lower than the evaporation temperature in the first heat exchanger 3, which is beneficial to improving the dehumidification effect without reducing the cooling liquid in the first pipeline unit 1. temperature. The flow direction of the refrigerant is: compressor 22 - condenser 23 - expansion valve 24 - first heat exchanger 3 - dehumidification unit 7 - compressor 22.

In some embodiments, as shown in FIG. 8 , the dehumidification unit 7 includes a throttling member 72 and a dehumidifying evaporator 73 , and the throttling member 72 is located between the first heat exchanger 3 and the dehumidifying evaporator 73 . Specifically, the throttling member 72 is a capillary tube. Between the dehumidification evaporator 73 and the first heat exchanger 3 to the throttling member 72 , deep dehumidification, dehumidification and rapid dehumidification can be achieved under conditions of low temperature and high humidity in the battery compartment. , while not affecting the battery temperature.

In some embodiments, as shown in FIG. 9 , the battery thermal management system includes a second valve member 8 , one interface of the second valve member 8 is connected to the inlet of the throttling member 72 , and the other interface is connected to the dehumidification evaporator 73 's exit. The second valve 8 can be a solenoid valve. The second valve 8 can be provided to turn on and off the dehumidification unit 7 to disconnect the dehumidification evaporator 73 when dehumidification is not needed, thereby reducing the flow resistance of the refrigerant and improving the energy efficiency of the system. Specifically, when the second valve 8 is in the open state, the refrigerant flowing out from the first heat exchanger 3 flows to the compressor 22 through the second valve 8; when the second valve 8 is closed, the refrigerant flows from the first heat exchanger 3 to the compressor 22. The refrigerant flowing out of the device 3 flows through the throttling member 72 and the dehumidification evaporator 73 in sequence, and then flows to the compressor 22 .

In some embodiments, as shown in Figures 10 and 11, the battery thermal management system includes a third valve member 9. One interface of the third valve member 9 is connected to the inlet of the second heat exchange part, and the other interface is connected to the inlet of the second heat exchange part. The outlet of the second heat exchange part. The third valve 9 can be a two-way valve. The third valve 9 can be provided to realize the on-off of the first heat exchanger 3, so as to disconnect the first heat exchanger 3 when it is not needed, thereby reducing the first heat exchanger 3. The flow resistance of the coolant in the pipeline unit 1 reduces the power of the first water pump 11 and improves the total energy efficiency of the system. Specifically, as shown in Figure 10, when cooling is only performed by the dry cooler 42, the third valve 9 is closed, and the flow direction of the cooling liquid is: battery - first water pump 11 - first valve 5 - dry cooler 42 - third Valve piece 9 - battery. As shown in Figure 11, when the heating unit 6 is working, the third valve 9 is closed, and the flow direction of the coolant is: battery - first water pump 11 - first valve 5 - third valve 9 - electric heater - Battery.

In some embodiments, the battery thermal management system further includes a cabin, the battery is located in the cabin, and in addition, the dehumidification unit 7 is at least partially installed in the cabin, and the dehumidification unit 7 is configured to dehumidify at least part of the space of the cabin. Specifically, the dehumidification evaporator 73 in the dehumidification unit 7 is installed in the cabin. The dehumidification evaporator 73 can achieve dehumidification or rapid dehumidification when the cabin temperature is low and the humidity is high, without affecting the battery temperature. In some embodiments, as shown in Figures 12 and 16, the battery thermal management system also includes a DCDC/PCS cooling unit 10. The DCDC/PCS cooling unit 10 is connected to the dry cooler 42. The DCDC/PCS cooling unit 10 can cool the DCDC module and /or PCS module. In the energy storage system, in addition to the battery that needs to dissipate heat, the DCDC power module and PCS module also need to dissipate heat. The DCDC/PCS cooling unit 10 can be provided to dissipate heat for the DCDC power module and PCS module. Since the DCDC power module and PCS module have a significant impact on temperature The requirement is lower than that of the battery, and the DCDC/PCS cooling unit 10 can be disposed in the dry cooler 42 .

In some embodiments, as shown in FIG. 12 , one end of the DCDC/PCS cooling unit 10 is connected to the inlet of the dry cooler 42 , and the other end is connected to the outlet of the dry cooler 42 . As shown in Figure 13-15, the battery thermal management system includes three working modes.

Working mode one: The battery dissipates heat through the compression heat exchange unit 2, and the DCDC/PCS cooling unit 10 provides cooling energy through the dry cooler 42. In this mode, the flow direction of the coolant is: battery - first water pump 11 - first valve 5-First heat exchanger 3-battery; DCDC/PCS cooling unit 10-second water pump 101-dry cooler 42-DCDC/PCS cooling unit 10.

Working mode two: The battery dissipates heat through the dry cooler 42, and the DCDC/PCS cooling unit 10 provides cooling energy through the dry cooler 42. In this mode, the flow direction of the coolant is: battery - first water pump 11 - first valve 5 - dry cooling Device 42 - third valve 9 - battery; DCDC/PCS cooling unit 10 - second water pump 101 - dry cooler 42 - DCDC/PCS cooling unit 10.

Working mode three: The battery dissipates heat through the dry cooler 42 and the compression heat exchange unit 2, and the DCDC/PCS cooling unit 10 provides cooling energy through the dry cooler 42. In this mode, the flow direction of the coolant is: battery - first water pump 11 - First valve 5 - dry cooler 42 - first heat exchanger 3 - battery; DCDC/PCS cooling unit 10 - second water pump 101 - dry cooler 42 - DCDC/PCS cooling unit 10.

In some embodiments, as shown in Figure 16, the battery thermal management system includes a first one-way valve 102, the DCDC/PCS cooling unit 10 is connected in series to the dry cooling pipeline 41, and the DCDC/PCS cooling unit 10 is located in the first unit. Between the directional valve 102 and the inlet of the dry cooler 42; one end of the first one-way valve 102 is connected to the inlet of the DCDC/PCS cooling unit 10, and the other end is connected to the outlet of the dry cooler 42. As shown in Figure 17-19, the battery thermal management system includes three working modes.

Working mode 1: The battery dissipates heat through the compression heat exchange unit 2, and the DCDC/PCS cooling unit 10 provides cooling capacity through the dry cooler 42. In this mode, the flow direction of the coolant is: battery - first water pump 11 - first valve 5-first heat exchanger 3-battery; DCDC/PCS cooling unit 10-dry cooler 42-first one-way valve 102-second water pump 101-DCDC/PCS cooling unit 10.

Working mode two: The battery is connected in series with the DCDC/PCS cooling unit 10 and dissipates heat through the dry cooler 42 and the compression heat exchange unit 2. In this mode, the flow direction of the coolant is: battery - first water pump 11 - first valve 5 - DCDC/PCS cooling unit 10 - dry cooler 42 - first heat exchanger 3 - battery.

Working mode three: The battery is connected in series with the DCDC/PCS cooling unit 10 and provides cooling capacity through the dry cooler 42. In this mode, the flow direction of the coolant is: battery - first water pump 11 - first valve 5 - DCDC/PCS cooling Unit 10 - dry cooler 42 - third valve 9 - battery; - second water pump 101 - dry cooler 42 - DCDC/PCS cooling unit 10.

In some embodiments, as shown in Figures 1-19, the battery thermal management system also includes an expansion tank 12 connected to the first pipeline unit 1, a pressure relief valve, a water supply tank 14, a water supply pump 15 and a second one-way valve. 16.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The directions or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the device referred to. Or elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limitations on the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection, electrical connection or communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction between two elements , unless otherwise expressly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and cannot be construed as limitations of the present invention. Those of ordinary skill in the art are within the scope of the present invention. Changes, modifications, substitutions and variations may be made to the above-described embodiments.

Claims (10)

1. A battery thermal management system, characterized by comprising: a first pipeline unit capable of exchanging heat for the battery; Compression heat exchange unit; A first heat exchanger, the first heat exchanger includes a first heat exchange part and a second heat exchange part, the compression heat exchange unit is connected to the first heat exchange part, and the first pipeline unit Capable of communicating with the second heat exchange part, the first heat exchanger is configured to perform heat exchange between the first pipeline unit and the compression heat exchange unit; A first heat exchange unit, the first heat exchange unit includes a dry cooling pipeline and a dry cooler, the dry cooler is provided in the dry cooling pipeline; A first valve member, the first valve member is directly or indirectly connected to the dry cooling pipeline and the first pipeline unit, the first valve member includes a first state and a second state, the first valve member When the first valve member is in the first state, the dry cooling pipeline is connected to the first pipeline unit. When the first valve member is in the second state, the dry cooling pipeline is disconnected from the first pipeline unit. . 2. The battery thermal management system according to claim 1, further comprising a heating unit, the heating unit is provided in the first pipeline unit, and an interface of the heating unit is connected to the first pipeline unit. The first heat exchanger is directly or indirectly connected, and the other interface of the heating unit is directly or indirectly connected to the battery; the heating unit is capable of heating. 3. The battery thermal management system according to claim 1, further comprising a dehumidification unit connected to the compression heat exchange unit; The compression heat exchange unit includes a refrigerant pipeline, a compressor, a condenser and an expansion valve. The refrigerant pipeline is connected to the first heat exchange part. The compressor, the condenser and the expansion valve The expansion valve is connected in series to the refrigerant pipeline. 4. The battery thermal management system according to claim 3, wherein the dehumidification unit includes a dehumidification pipeline and a dehumidification component, the dehumidification component is disposed in the dehumidification pipeline, and the dehumidification pipeline is connected to the dehumidification pipeline. The refrigerant pipelines are connected in parallel, one end of the dehumidification pipeline is connected to the outlet of the condenser, and the other end is connected to the inlet of the compressor. 5. The battery thermal management system according to claim 3, wherein the dehumidification unit is connected in series to the refrigerant pipeline, one end of the dehumidification unit is connected to the first heat exchanger, and the other end of the dehumidification unit is connected to the first heat exchanger. Connected to the inlet of the compressor; The dehumidification unit includes a throttling member and a dehumidification evaporator, and the throttling member is located between the first heat exchanger and the dehumidification evaporator. 6. The battery thermal management system according to claim 5, characterized by comprising a second valve member, one interface of the second valve member is connected to the inlet of the throttling member, and the other interface is connected to the inlet of the throttling member. The outlet of the dehumidification evaporator. 7. The battery thermal management system according to claim 5, characterized by comprising a third valve member, one interface of the third valve member is connected to the inlet of the second heat exchange part, and the other interface is connected to at the outlet of the second heat exchange part. 8. The battery thermal management system according to any one of claims 3-7, further comprising a cabin, the battery is located in the cabin, and the dehumidification unit is at least partially installed in the cabin. , the dehumidification unit is configured to dehumidify at least part of the space of the cabin. 9. The battery thermal management system according to any one of claims 1-7, further comprising a DCDC/PCS cooling unit, the DCDC/PCS cooling unit is connected to the dry cooler, and the DCDC/PCS cooling unit is connected to the dry cooler. The PCS cooling unit is capable of cooling DCDC modules and/or PCS modules; One end of the DCDC/PCS cooling unit is connected to the inlet of the dry cooler, and the other end is connected to the outlet of the dry cooler. 10. The battery thermal management system according to claim 9, characterized in that it includes a first one-way valve, the DCDC/PCS cooling unit is connected in series to the dry cooling pipeline, and the DCDC/PCS cooling unit is located at the between the first one-way valve and the inlet of the dry cooler; One end of the first one-way valve is connected to the inlet of the DCDC/PCS cooling unit, and the other end is connected to the outlet of the dry cooler.