CN220527012U - Battery thermal management system - Google Patents

Abstract

The utility model discloses a battery thermal management system, which comprises: the heat exchange device comprises a first pipeline unit, a compression type heat exchange unit, a first heat exchanger, a first heat exchange unit and a first valve; the first heat exchanger comprises a first heat exchange part and a second heat exchange part, the compression type heat exchange unit is communicated with the first heat exchange part, and the first pipeline unit is communicated with the second heat exchange part; the first heat exchange unit comprises a dry cooling pipeline and a dry cooler; the dry and cold pipeline is directly or indirectly connected with the first pipeline unit through the first valve, when the first valve is in a first state, the dry and cold pipeline is communicated with the first pipeline unit, and when the first valve is in a second state, the dry and cold pipeline is disconnected from the first pipeline unit. In the battery thermal management system, when the external temperature is low, the heat of the battery can be dissipated only through the first heat exchange unit, and the whole system has higher annual energy efficiency.

Description

Battery thermal management system

Technical Field

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

Background

The battery thermal management system generally refers to an air conditioning system for exchanging heat with a battery, and in the related art, the air conditioning system usually adopts single-cooling compression refrigeration to exchange heat with the battery, and the air conditioning system has the following problems in application: because the charge and discharge processes of the energy storage battery are all required to dissipate heat, most of the time of the air conditioning system dissipates heat of the energy storage battery in a compression refrigeration mode, so that the consumption power is high, and the annual energy efficiency of the whole machine is low.

Disclosure of Invention

The embodiment of the utility model provides a battery thermal management system which comprises a plurality of heat exchange modes, and has higher energy efficiency when the battery is subjected to heat exchange.

The battery thermal management system of the embodiment of the utility model comprises: the heat exchange device comprises a first pipeline unit, a compression type heat exchange unit, a first heat exchanger, a first heat exchange unit and a first valve, wherein the first pipeline unit can exchange heat for the battery; the first heat exchanger comprises a first heat exchange part and a second heat exchange part, the compression type heat exchange unit is communicated with the first heat exchange part, the first pipeline unit is communicated with the second heat exchange part, and the first heat exchanger is configured to exchange heat between the first pipeline unit and the compression type heat exchange unit; the first heat exchange unit comprises a dry cooling pipeline and a dry cooler, and the dry cooler is arranged on the dry cooling pipeline; the first valve is directly or indirectly connected with the dry and cold pipeline and the first pipeline unit, the first valve comprises a first state and a second state, when the first valve is in the first state, the dry and cold pipeline is communicated with the first pipeline unit, and when the first valve is in the second state, the dry and cold pipeline is disconnected from the first pipeline unit.

According to the battery thermal management system provided by the embodiment of the utility model, when the external temperature is low, the heat of the battery can be dissipated only through the first heat exchange unit, so that the energy consumption is reduced; through the cooperation of compression heat transfer unit and first heat transfer unit, make entire system have higher annual energy efficiency. In addition, through the setting of first valve member, the dry and cold pipeline can be with first heat transfer unit intercommunication or disconnection, and the dry and cold ware does not insert first pipeline unit when not using first heat transfer unit, has reduced the flow resistance in the first pipeline unit, has energy-conserving effect.

In some embodiments, the battery thermal management system further comprises a heating unit, the heating unit is arranged on the first pipeline unit, one interface of the heating unit is directly or indirectly connected with the first heat exchanger, and the other interface of the heating unit is directly or indirectly connected with the battery; the heating unit is capable of heating.

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

the compression type heat exchange unit comprises a refrigerant pipeline, a compressor, a condenser and an expansion valve, wherein the refrigerant pipeline is connected to the first heat exchange part, and the compressor, the condenser and the expansion valve are connected in series to the refrigerant pipeline. The dehumidifying unit can reduce the air humidity in the battery compartment, specifically, the refrigerant of the compression type heat exchange unit can flow through the dehumidifying unit, the air exchanges heat with the refrigerant in the dehumidifying unit, the refrigerant evaporates to take away the heat in the air so as to reduce the temperature of the air, when the temperature of the air is reduced to be lower than the dew point temperature, the water vapor in the air condenses out, and the air humidity is reduced. The dehumidification unit is arranged at the rear side of the first heat exchanger, and the refrigerant flows through the first heat exchanger and then flows through the dehumidification unit, so that the water temperature of the first pipeline unit is not affected.

In some embodiments, the dehumidification unit includes a dehumidification pipeline and a dehumidification assembly, the dehumidification assembly is disposed in the dehumidification pipeline, the dehumidification pipeline is connected in parallel with the refrigerant pipeline, one end of the dehumidification pipeline is communicated with an outlet of the condenser, and the other end of the dehumidification pipeline is communicated with an inlet of the compressor.

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

the dehumidification unit comprises a throttling piece and a dehumidification evaporator, and the throttling piece is located between the first heat exchanger and the dehumidification evaporator.

In some embodiments, the battery thermal management system includes a second valve member having one interface connected to the inlet of the throttling element and another interface connected to the outlet of the dehumidification vaporizer.

In some embodiments, the battery thermal management system includes a third valve member having one interface connected to the inlet of the second heat exchange portion and another interface connected to the outlet of the second heat exchange portion.

In some embodiments, the battery thermal management system further comprises a compartment within which the battery is located, the dehumidification unit being at least partially mounted within the compartment, the dehumidification unit being configured to dehumidify at least a portion of a space of the compartment.

In some embodiments, the battery thermal management system further comprises a DCDC/PCS cooling unit connected to the main cooler, the DCDC/PCS cooling unit being 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 of the DCDC/PCS cooling unit is connected to the outlet of the dry cooler.

In some embodiments, the battery thermal management system includes a first check valve, the DCDC/PCS cooling unit is connected in series with the dry cooling circuit, the DCDC/PCS cooling unit is located between the first check valve and an 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 of the first one-way valve is connected to the outlet of the dry cooler.

Drawings

Fig. 1 is a schematic diagram of a battery thermal management system according to embodiment 1 of the present utility model.

Fig. 2 is a schematic diagram of a cooling mode one of the battery thermal management system of embodiment 1 of the present utility model.

Fig. 3 is a schematic diagram of a second cooling mode of embodiment 1 of the battery thermal management system of the present utility model.

Fig. 4 is a schematic diagram of a cooling mode three of embodiment 1 of the battery thermal management system of the present utility model.

Fig. 5 is a schematic diagram of a heating mode of embodiment 1 of the battery thermal management system of the present utility model.

Fig. 6 is a schematic diagram of a dehumidification mode of embodiment 1 of the battery thermal management system of the present utility model.

Fig. 7 is a schematic structural view of embodiment 2 of the battery thermal management system of the present utility model.

Fig. 8 is a schematic structural view of embodiment 3 of the battery thermal management system of the present utility model.

Fig. 9 is a schematic structural view of embodiment 4 of the battery thermal management system of the present utility model.

Fig. 10 is a schematic diagram of the operation mode one of embodiment 5 of the battery thermal management system of the present utility model.

Fig. 11 is a schematic diagram of the second mode of operation of embodiment 5 of the battery thermal management system of the present utility model.

Fig. 12 is a schematic structural view of embodiment 6 of the battery thermal management system of the present utility model.

Fig. 13 is a schematic diagram of the operation mode one of embodiment 6 of the battery thermal management system of the present utility model.

Fig. 14 is a schematic diagram of the second mode of operation of embodiment 6 of the battery thermal management system of the present utility model.

Fig. 15 is a schematic diagram of the third mode of operation of embodiment 6 of the battery thermal management system of the present utility model.

Fig. 16 is a schematic structural view of embodiment 7 of the battery thermal management system of the present utility model.

Fig. 17 is a schematic diagram of the operation mode one of embodiment 7 of the battery thermal management system of the present utility model.

Fig. 18 is a schematic diagram of a second mode of operation of embodiment 7 of the battery thermal management system of the present utility model.

Fig. 19 is a schematic diagram of the third mode of operation of embodiment 7 of the battery thermal management system of the present utility model.

Reference numerals:

1. a first piping unit; 11. a first water pump; 12. an expansion tank; 13. a pressure release valve; 14. a water supplementing tank; 15. a water supplementing pump; 16. a second one-way valve; 2. a compression heat exchange unit; 21. a refrigerant line; 22. a compressor; 23. a condenser; 24. an expansion valve; 3. a first heat exchanger; 4. a first heat exchange unit; 41. a dry cooling pipeline; 42. a dry cooler; 5. a first valve member; 6. a heating unit; 7. a dehumidifying unit; 71. a dehumidifying pipeline; 72. a throttle member; 73. a dehumidifying evaporator; 8. a second valve member; 9. a third valve member; 10. a DCDC/PCS cooling unit; 101. a second water pump; 102. a first one-way valve.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 to 19, a battery thermal management system according to an embodiment of the present utility model includes: the heat exchange system comprises a first pipeline unit 1, a compression type heat exchange unit 2, a first heat exchanger 3, a first heat exchange unit 4 and a first valve element 5.

The first pipeline unit 1 can exchange heat with the battery; the first heat exchanger 3 comprises a first heat exchange part and a second heat exchange part, the compression type heat exchange unit 2 is communicated with the first heat exchange part, the first pipeline unit 1 is communicated with the second heat exchange part, and the first heat exchanger 3 can exchange heat with the first pipeline unit 1 and the compression type heat exchange unit 2. Specifically, the first pipe unit 1 is connected between the battery and the second heat exchanging portion of the first heat exchanger 3, the first heat exchanger 3 may be a plate heat exchanger, and the compression heat exchanging unit 2 is connected to the first heat exchanging portion of the first heat exchanger 3. A cooling fluid, such as water, may be disposed in the first pipe unit 1, and the cooling fluid circulates between the second heat exchange portion and the battery through the first water pump 11 disposed on the first pipe unit 1, and the compression heat exchange unit 2 can prepare cooling capacity, and the cooling capacity is transferred to the battery through the cooling fluid, so as to achieve heat dissipation of the battery.

The first heat exchange unit 4 comprises a dry cooling pipeline 41 and a dry cooler 42, and the dry cooler 42 is arranged on the dry cooling pipeline 41; the first valve element 5 is directly or indirectly connected with the dry cooling pipeline 41 and the first pipeline unit 1, the first valve element 5 comprises a first state and a second state, when the first valve element 5 is in the first state, the dry cooling pipeline 41 is communicated with the first pipeline unit 1, and when the first valve element 5 is in the second state, the dry cooling pipeline 41 is disconnected from the first pipeline unit 1. Specifically, the first valve 5 may be a three-way valve, the first port of the three-way valve is communicated with the first water pump 11, the second port is communicated with the inlet of the first heat exchanger 3, one end of the dry cooling pipeline 41 is communicated with the third port of the three-way valve, and the other end of the dry cooling pipeline is communicated 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 cooling liquid flows to the battery to dissipate heat of the battery. As shown in fig. 2-4, the battery thermal management system of an embodiment of the present utility model includes three cooling modes.

Refrigeration mode one: when the external temperature is higher than the water inlet temperature of the battery side, the compression heat exchange unit 2 works and prepares cold, and the flow direction of the cooling liquid in the first pipeline unit 1 is as follows: battery-first water pump 11-first valve element 5-first heat exchanger 3-battery.

And a second refrigeration mode: when the external temperature is less than the water inlet temperature at the battery side, the compression type heat exchange unit 2 and the first heat exchange unit 4 work simultaneously to prepare cold quantity, and the flow direction of the cooling liquid in the first pipeline unit 1 is as follows: battery-first water pump 11-first valve element 5-dry cooler 42-first heat exchanger 3-battery. In this mode, the cooling liquid is cooled by the dry cooler 42, and then the cooling capacity is supplemented by the compression heat exchange unit 2, so that the load of the compressor 22 is reduced and the energy efficiency of the system is improved.

And a refrigeration mode III: when the external temperature is low to the extent that the first heat exchange unit 4 can meet the heat dissipation requirement of the battery, the compression type heat exchange unit 2 is closed, the first heat exchange unit 4 works, and the flow direction of the cooling liquid in the first pipeline unit 1 is as follows: battery-first water pump 11-first valve element 5-dry cooler 42-first heat exchanger 3-battery. In this mode, the compression heat exchange unit 2 does not work, so that the energy consumption of the whole system is reduced, the problems of low-frequency operation and difficulty of the compressor 22 are avoided, and the reliability of the system is improved. In the battery thermal management system provided by the embodiment of the utility model, the compression type heat exchange unit and the first heat exchange unit can exchange heat with the first pipeline unit so as to realize heat dissipation of the battery. When the external temperature is higher than the water inlet temperature of the battery side, the dry and cold pipeline is not communicated with the first pipeline unit, and the heat of the battery is dissipated only through the compression type heat exchange unit; when the external temperature is lower than the water inlet temperature of the battery side, the dry and cold pipeline is communicated with the first pipeline unit, and the compression type heat exchange unit and the first heat exchange unit simultaneously dissipate heat of the battery; when the external temperature is as low as the first heat exchange unit, the heat dissipation requirement of the battery can be met, and the battery is dissipated only through the first heat exchange unit.

Compared with a single-cooling type compression refrigeration battery thermal management system in the related art, the battery thermal management system provided by the embodiment of the utility model has the advantages that when the external temperature is low, the battery is only radiated through the first heat exchange unit, so that the conditions of large system pressure fluctuation and difficult compressor oil return caused by the start and stop operation of the compressor are avoided, and the reliability of the system is better; through the cooperation of compression heat transfer unit and first heat transfer unit, make entire system have higher annual energy efficiency. In addition, through the setting of first valve member, the dry and cold pipeline can be with first heat transfer unit intercommunication or disconnection for the dry and cold ware does not insert first pipeline unit when not using first heat transfer unit, has reduced the flow resistance in the first pipeline unit, has energy-conserving effect.

In some embodiments, as shown in fig. 5, the battery thermal management system further includes a heating unit 6, where the heating unit 6 is disposed in the first pipeline unit 1, specifically, an inlet of the heating unit 6 is directly or indirectly connected to the first heat exchanger 3, and an 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 may be an electric heater connected in series to the first pipe unit 1, and in some low temperature environments, the battery may be heated by the heating unit 6 so that the battery can work normally. In the heating mode, the compression heat exchange unit 2 and the first heat exchange unit 4 are closed, the heating unit 6 works, and the flow direction of the cooling liquid in the first pipeline unit 1 is as follows: battery-first water pump 11-first valve element 5-first heat exchanger 3-electric heater-battery.

In some embodiments, as shown in fig. 6, the battery thermal management system further includes a dehumidifying unit 7, the dehumidifying unit 7 being connected to the compression heat exchange unit 2; the compression heat exchange unit 2 includes a refrigerant line 21, a compressor 22, a condenser 23, and an expansion valve 24, the refrigerant line 21 is connected to the first heat exchange portion, and the compressor 22, the condenser 23, and the expansion valve 24 are connected in series to the refrigerant line 21. The dehumidification unit 7 includes a dehumidification pipe 71 and a dehumidification unit provided in the dehumidification pipe 71, the dehumidification pipe 71 being connected in parallel with the refrigerant pipe 21, one end of the dehumidification pipe 71 being connected to an outlet of the condenser 23, and the other end being connected to an inlet of the compressor 22.

Specifically, the dehumidifying unit 7 may be connected with the compression heat exchange unit 2 through an electromagnetic valve, and when the humidity of the battery compartment is large, the dehumidifying unit 7 may be turned on. In the dehumidification mode, the flow direction of the refrigerant is divided into two paths, and one path is used for compression refrigeration: compressor 22-condenser 23-expansion valve 24-first heat exchanger 3-compressor 22; the other path is dehumidified: compressor 22-condenser 23-solenoid valve-dehumidification unit 7-compressor 22.

The arrangement of the dehumidification unit 7 can reduce the air humidity in the battery compartment, specifically, the refrigerant of the compression type heat exchange unit 2 can flow through the dehumidification unit 7, the air exchanges heat with the refrigerant in the dehumidification unit 7, the refrigerant evaporates to take away heat in the air so as to reduce the temperature of the air, when the temperature of the air is reduced to be lower than the dew point temperature, the water vapor in the air condenses out, and the air humidity is reduced. The dehumidification unit 7 can be arranged at the rear side of the first heat exchanger 3, and the refrigerant flows through the first heat exchanger 3 and then flows through the dehumidification unit 7, so that the water temperature of the first pipeline unit is not affected.

In some embodiments, as shown in fig. 7, the dehumidification unit 7 is connected in series to the refrigerant line 21, and 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 at the downstream of the first heat exchanger 3, and the evaporation temperature of the dehumidification unit is lower than that in the first heat exchanger 3, so that the dehumidification effect is improved, and the temperature of the cooling liquid in the first pipeline unit 1 is not reduced. The flow direction of the refrigerant is as follows: 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 throttle member 72 and a dehumidification evaporator 73, the throttle member 72 being located between the first heat exchanger 3 and the dehumidification evaporator 73. Specifically, the throttle member 72 is a capillary tube, and the deep dehumidification, the dehumidification under the conditions of low temperature and high humidity in the battery compartment and the rapid dehumidification can be realized between the dehumidification evaporator 73 and the first heat exchanger 3 to the throttle member 72, and meanwhile, the temperature of the battery is not influenced.

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 being connected to the inlet of the throttling element 72 and the other interface being connected to the outlet of the dehumidification evaporator 73. The second valve member 8 can be an electromagnetic valve, and the second valve member 8 can be arranged to realize the on-off of the dehumidification unit 7 so as to disconnect the dehumidification evaporator 73 when dehumidification is not needed, reduce the flow resistance of the refrigerant and improve the energy efficiency of the system. Specifically, when the second valve element 8 is in the open state, the refrigerant flowing out of the first heat exchanger 3 flows through the second valve element 8 to the compressor 22; when the second valve element 8 is closed, the refrigerant flowing out of the first heat exchanger 3 flows through the throttle element 72, the dehumidification evaporator 73, and then flows to the compressor 22 in this order.

In some embodiments, as shown in fig. 10 and 11, the battery thermal management system includes a third valve element 9, where one interface of the third valve element 9 is connected to the inlet of the second heat exchange portion, and the other interface is connected to the outlet of the second heat exchange portion. The third valve member 9 can be a two-way valve, and the third valve member 9 can be arranged to realize the on-off of the first heat exchanger 3 so as to disconnect the first heat exchanger 3 when the first heat exchanger 3 is not needed, thereby reducing the flow resistance of the cooling liquid in the first pipeline unit 1, reducing the power of the first water pump 11 and improving the total energy efficiency of the system. Specifically, as shown in fig. 10, when the cooling is performed only by the dry cooler 42, the third valve element 9 is closed, and the flow direction of the cooling liquid is: battery-first water pump 11-first valve element 5-main cooler 42-third valve element 9-battery. As shown in fig. 11, when the heating unit 6 is operated, the third valve member 9 is closed, and the flow direction of the cooling liquid is: battery-first water pump 11-first valve element 5-third valve element 9-electric heater-battery.

In some embodiments, the battery thermal management system further comprises a compartment in which the battery is located, and further wherein the dehumidification unit 7 is at least partially mounted in the compartment, the dehumidification unit 7 being configured to dehumidify at least a portion of the space of the compartment. Specifically, the dehumidifying evaporator 73 in the dehumidifying unit 7 is installed in the cabin, and dehumidification under conditions of low temperature and high humidity in the cabin, or a rapid dehumidification function can be achieved by the dehumidifying evaporator 73 without affecting the battery temperature. In some embodiments, as shown in fig. 12 and 16, the battery thermal management system further includes a DCDC/PCS cooling unit 10, the DCDC/PCS cooling unit 10 being connected to a intercooler 42, the DCDC/PCS cooling unit 10 being capable of cooling the DCDC module and/or the PCS module. In the energy storage system, besides the heat dissipation required by the battery, the DCDC power module and the PCS module also need to dissipate heat, and the DCDC/PCS cooling unit 10 is arranged to be capable of dissipating heat to the DCDC power module and the PCS module, and as the requirements of the DCDC power module and the PCS module for temperature are lower than those of the battery, the DCDC/PCS cooling unit 10 can be arranged in the dry cooler 42.

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

Operation mode one: the battery dissipates heat through the compression heat exchange unit 2, and the DCDC/PCS cooling unit 10 provides cooling through the dry cooler 42, and in this mode, the flow direction of the cooling fluid is: battery-first water pump 11-first valve element 5-first heat exchanger 3-battery; DCDC/PCS cooling unit 10-second water pump 101-chiller 42-DCDC/PCS cooling unit 10.

And a second working mode: the battery dissipates heat through the dry cooler 42 and the DCDC/PCS cooling unit 10 provides cooling through the dry cooler 42, in which mode the flow direction of the cooling fluid is: battery-first water pump 11-first valve element 5-dry cooler 42-third valve element 9-battery; DCDC/PCS cooling unit 10-second water pump 101-chiller 42-DCDC/PCS cooling unit 10.

And a third working mode: the battery radiates heat through the dry cooler 42 and the compression heat exchange unit 2, and the DCDC/PCS cooling unit 10 provides cooling through the dry cooler 42, and in this mode, the flow direction of the cooling liquid is: the battery, the first water pump 11, the first valve element 5, the dry cooler 42, the first heat exchanger 3 and the battery; DCDC/PCS cooling unit 10-second water pump 101-chiller 42-DCDC/PCS cooling unit 10.

In some embodiments, as shown in fig. 16, the battery thermal management system includes a first check valve 102, the dcdc/PCS cooling unit 10 is connected in series with the dry cooling line 41, and the dcdc/PCS cooling unit 10 is located between the first check valve 102 and the inlet of the dry cooler 42; one end of the first check 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 intercooler 42. As shown in fig. 17-19, the battery thermal management system includes three modes of operation.

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

And a second working mode: the battery is connected in series with the DCDC/PCS cooling unit 10 and dissipates heat through the main cooler 42 and the compression heat exchange unit 2, and in this mode, the flow direction of the cooling liquid is: battery-first water pump 11-first valve element 5-DCDC/PCS cooling unit 10-dry cooler 42-first heat exchanger 3-battery.

And a third working mode: the battery is connected in series with the DCDC/PCS cooling unit 10 and provides cooling through the main cooler 42, in which mode the flow direction of the cooling fluid is: the battery, the first water pump 11, the first valve element 5, the DCDC/PCS cooling unit 10, the dry cooler 42, the third valve element 9 and the battery; second water pump 101-dry cooler 42-DCDC/PCS cooling unit 10.

In some embodiments, as shown in fig. 1-19, the battery thermal management system further includes an expansion tank 12, a pressure relief valve, a make-up tank 14, a make-up pump 15, and a second check valve 16 coupled to the first piping unit 1.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A battery thermal management system, comprising:

the first pipeline unit can exchange heat with the battery;

a compression heat exchange unit;

a first heat exchanger including a first heat exchange portion and a second heat exchange portion, the compression heat exchange unit being in communication with the first heat exchange portion, the first pipe unit being communicable with the second heat exchange portion, the first heat exchanger being configured to exchange heat with the first pipe unit and the compression heat exchange unit;

the device comprises a first heat exchange unit, a second heat exchange unit and a third heat exchange unit, wherein the first heat exchange unit comprises a dry cooling pipeline and a dry cooler, and the dry cooler is arranged on the dry cooling pipeline;

the first valve part is directly or indirectly connected with the dry cooling pipeline and the first pipeline unit, the first valve part comprises a first state and a second state, when the first valve part is in the first state, the dry cooling pipeline is communicated with the first pipeline unit, and when the first valve part is in the second state, the dry cooling pipeline is disconnected from the first pipeline unit.

2. The battery thermal management system of claim 1, further comprising a heating unit disposed on the first piping unit, one interface of the heating unit being directly or indirectly connected to the first heat exchanger, and the other interface of the heating unit being directly or indirectly connected to the battery; the heating unit is capable of heating.

3. The battery thermal management system of claim 1, further comprising a dehumidification unit connected to the compression heat exchange unit;

the compression type heat exchange unit comprises a refrigerant pipeline, a compressor, a condenser and an expansion valve, wherein the refrigerant pipeline is connected to the first heat exchange part, and the compressor, the condenser and the expansion valve are connected in series to the refrigerant pipeline.

4. A battery thermal management system according to claim 3, wherein the dehumidification unit comprises a dehumidification line and a dehumidification assembly, the dehumidification assembly is disposed in the dehumidification line, the dehumidification line is connected in parallel with the refrigerant line, one end of the dehumidification line is communicated with the outlet of the condenser, and the other end is communicated with the inlet of the compressor.

5. The battery thermal management system of claim 3, wherein the dehumidification unit is connected in series with the refrigerant line, one end of the dehumidification unit is communicated with the first heat exchanger, and the other end is communicated with the inlet of the compressor;

the dehumidification unit comprises a throttling piece and a dehumidification evaporator, and the throttling piece is located between the first heat exchanger and the dehumidification evaporator.

6. The battery thermal management system of claim 5 comprising a second valve member having one port connected to an inlet of the throttling element and another port connected to an outlet of the dehumidification evaporator.

7. The battery thermal management system of claim 5, comprising a third valve member having one interface connected to an inlet of the second heat exchange portion and another interface connected to an outlet of the second heat exchange portion.

8. The battery thermal management system of any of claims 3-7, further comprising a compartment within which the battery is located, the dehumidification unit being at least partially mounted within the compartment, the dehumidification unit being configured to dehumidify at least a portion of a space of the compartment.

9. The battery thermal management system of any of claims 1-7, further comprising a DCDC/PCS cooling unit connected to the dry cooler, the DCDC/PCS cooling unit being 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 of the DCDC/PCS cooling unit is connected to the outlet of the dry cooler.

10. The battery thermal management system of claim 9 comprising a first one-way valve, the DCDC/PCS cooling unit being connected in series with the dry cooling circuit, the DCDC/PCS cooling unit being located between the first one-way valve and an 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 of the first one-way valve is connected to the outlet of the dry cooler.