CN220535362U - Thermal management system and vehicle - Google Patents

Abstract

The utility model provides a thermal management system and a vehicle, the thermal management system has a battery loop, the thermal management system includes: the first heat exchange component is arranged in the battery loop and is used for carrying out heat exchange with the battery module, the refrigerating component and the heating component are connected in series in the battery loop with the first heat exchange component, the refrigerating component is used for absorbing heat of cooling liquid in the battery loop, and the heating component is used for heating the cooling liquid in the battery loop; the heating element has a heating circuit, and the heating element includes: the battery cooling device comprises a first battery cooler and a heater, wherein the heater is arranged in a heating loop, a first cooling liquid channel in the first battery cooler is connected in the battery loop, a first cooling medium channel in the first battery cooler is connected in the heating loop, and cooling liquid in the battery loop and a first cooling medium in the heating loop exchange heat in the first battery cooler.

Description

Thermal management system and vehicle

Technical Field

The utility model relates to the technical field of electric automobiles, in particular to a thermal management system and a vehicle with the thermal management system.

Background

In the prior art, a battery thermal management system of a logistics vehicle reserves a refrigerant system and a waterway cooling system, and the battery is cooled by utilizing the cooperation of a condenser and a compressor, so that the working environment is limited. When the ambient temperature is low, the battery thermal management system cannot heat the battery, so that the battery works in a low-temperature environment, the discharging efficiency of the battery is affected, and the service life of the battery is seriously reduced.

Disclosure of Invention

The utility model provides a new technical scheme of a thermal management system, which at least can solve one of the problems of low discharge efficiency and short service life of a battery caused by the difficulty in heating the battery in a low-temperature environment of the thermal management system in the prior art.

The utility model also provides a vehicle comprising the thermal management system.

According to a first aspect of the present utility model, there is provided a thermal management system having a battery circuit, the thermal management system comprising: the first heat exchange component is arranged in the battery loop and is arranged at the battery module for carrying out heat exchange with the battery module, the refrigerating component and the heating component are connected in series with the first heat exchange component in the battery loop, the refrigerating component is used for absorbing heat of cooling liquid in the battery loop, and the heating component is used for heating the cooling liquid in the battery loop; the heating assembly has a heating circuit, the heating assembly comprising: the battery cooling device comprises a first battery cooler and a heater, wherein the heater is arranged in a heating loop, a first cooling liquid channel in the first battery cooler is connected in the battery loop, a first cooling medium channel in the first battery cooler is connected in the heating loop, and cooling liquid in the battery loop and a first cooling medium in the heating loop exchange heat in the first battery cooler.

Optionally, the refrigeration assembly has a cooling circuit, the refrigeration assembly comprising: a compressor and a condenser, the compressor and the condenser being in series in the cooling circuit; and the second battery cooler is characterized in that a first cooling liquid channel in the second battery cooler is connected in the battery loop, a second cooling medium channel in the second battery cooler is connected in the cooling loop, and the cooling liquid in the battery loop and the second cooling medium in the cooling loop exchange heat in the second battery cooler.

Optionally, the thermal management system further has an electrical drive loop, the thermal management system further comprising: the second heat exchange component is arranged at the electric drive module and is used for carrying out heat exchange with the electric drive module; and the radiator and the second heat exchange component are connected in series in the electric drive loop and used for releasing heat of cooling liquid in the electric drive loop, and the radiator is arranged at the condenser.

Optionally, water pumps are further arranged in the battery loop and the electric drive loop respectively, and the water pumps are used for driving cooling liquid in the battery loop or the electric drive loop to circularly flow.

Optionally, the condenser and the radiator in combination form at least a portion of a heat dissipation module, and the first battery cooler, the second battery cooler, the compressor, the water pump are disposed separately from the heat dissipation module.

Optionally, the heat dissipation module is located the front end of vehicle, the heat dissipation module still includes: and the fan is arranged at the rear sides of the condenser and the radiator.

Optionally, the method further comprises: the three-way valve is provided with a first end, a second end and a third end, wherein the first end is communicated with one end of the radiator, the second end is communicated with one end of the second heat exchange component respectively, the third end is communicated with the other end of the second heat exchange component, an electric drive loop is formed between the first end, the third end, the second heat exchange component and the radiator, a bypass loop is formed between the second end, the third end and the second heat exchange component, and the three-way valve is used for switching the electric drive loop and the bypass loop.

Optionally, the method further comprises: a three-way valve having a first end, a second end, and a third end; the four-way valve is provided with a fourth end, a fifth end, a sixth end and a seventh end; the first end with the one end intercommunication of radiator, the second end with the other end of radiator respectively with the one end intercommunication of second heat transfer module, the third end with the fourth end intercommunication, the fifth end with the other end intercommunication of second heat transfer module, the sixth end with second battery cooler intercommunication, the seventh end with the one end intercommunication of first heat transfer module, the other end of first heat transfer module with first battery cooler intercommunication, first battery cooler with second battery cooler intercommunication, the cross valve is used for switching the battery return circuit with the intercommunication or disconnection between the electric drive return circuit.

Optionally, the thermal management system further comprises: and the liquid storage tank is respectively communicated with the battery loop and the electric drive loop and is used for respectively providing cooling liquid for the battery loop and the electric drive loop.

According to a second aspect of the present utility model, there is provided a vehicle comprising: a thermal management system, the thermal management system being any of the thermal management systems described in the embodiments above; and the battery module is provided with the first heat exchange component.

Optionally, the quantity of battery module is a plurality of, a plurality of battery modules are followed the length direction of vehicle arranges, first heat exchange assembly includes a plurality of heat exchangers that are parallelly connected each other, a plurality of heat exchangers with a plurality of battery modules one-to-one sets up.

Optionally, the thermal management system includes a second heat exchange assembly including a plurality of second heat exchangers connected in parallel with each other, the vehicle further including: the electric driving modules are arranged in one-to-one correspondence with the second heat exchangers.

According to the thermal management system provided by the utility model, the refrigerating component, the heating component and the first heat exchange component are connected in series in the battery loop, and the refrigerating component is utilized to cool the battery module at a high temperature, so that thermal runaway of the battery module is avoided. Under the low temperature condition, the heater in the heating loop is utilized to heat the first refrigerant, then the first battery cooler is utilized to exchange heat between the liquid, and the heat of the first refrigerant is exchanged for the cooling liquid in the battery loop, so that the purpose of heating the battery module can be conveniently and rapidly realized. Therefore, under various environment temperature environments, the battery module can be quickly in a proper working temperature range through the cooperation of the refrigerating component and the heating component, and the working efficiency and the service life of the battery are ensured.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic diagram of a thermal management system according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a thermal management system in a low temperature condition according to one embodiment of the present utility model;

FIG. 3 is a schematic diagram of a thermal management system in a high temperature condition according to one embodiment of the present utility model;

FIG. 4 is a schematic structural view of a thermal management system according to yet another embodiment provided by the present utility model;

fig. 5 is a plan view of a part of the structure of a vehicle according to one embodiment provided by the present utility model.

Reference numerals

A battery circuit 1; an electric drive circuit 2; a cooling circuit 3; a heating circuit 4; a fan 5; a water pump 6; a liquid storage tank 7; a bypass loop 8;

a first heat exchange assembly 10; a first heat exchanger 11; a second battery cooler 21; a compressor 22; a condenser 23; first battery cooler 31; a heater 32; a second heat exchange assembly 40; a second heat exchanger 41; a heat sink 50; a three-way valve 60; a first end 61; a second end 62; a third end 63; a four-way valve 70; a fourth end 71; a fifth end 72; a sixth end 73; a seventh end 74; a heat dissipation module 80;

a battery module 200; the electrically driven module 300.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

A thermal management system according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, a thermal management system according to an embodiment of the present utility model includes: a first heat exchange assembly 10, a refrigeration assembly and a heating assembly.

Specifically, the thermal management system has a battery circuit 1. The first heat exchange assembly 10 is disposed in the battery circuit 1, and the first heat exchange assembly 10 is disposed at the battery module 200 for performing heat exchange with the battery module 200. The refrigeration and heating assemblies are connected in series with the first heat exchange assembly 10 in the battery circuit 1. The refrigeration assembly is used for absorbing heat of the cooling liquid in the battery loop 1, and the heating assembly is used for heating the cooling liquid in the battery loop 1. The heating assembly has a heating circuit 4, the heating assembly comprising: a first battery cooler 31 (coolant) and a heater 32, the heater 32 is provided in the heating circuit 4, a first coolant passage in the first battery cooler 31 is connected to the battery circuit 1, a first coolant passage in the first battery cooler 31 is connected to the heating circuit 4, and the coolant in the battery circuit 1 and the first coolant in the heating circuit 4 exchange heat in the first battery cooler 31.

In other words, the thermal management system according to the embodiment of the present utility model is mainly composed of the first heat exchange assembly 10, the refrigeration assembly, and the heating assembly. The thermal management system of the present embodiment may be adapted to a logistics vehicle which may be operated in snowy and snowy environments, i.e. in environments with relatively low temperatures. Alternatively, the logistics vehicle may be an amphibious logistics vehicle. The battery circuit 1 may be used to cool or heat the battery module 200, and the first heat exchange assembly 10, the cooling assembly, and the heating assembly may be connected in series in the battery circuit 1. The liquid flowing in the battery circuit 1 may be a cooling liquid.

Specifically, the first heat exchange assembly 10 may be disposed at the battery module 200 to exchange heat with the battery module 200. The number of the battery modules 200 may be one or more, and when the number of the battery modules 200 is more than one, the first heat exchange assembly 10 may exchange heat with at least one of the plurality of battery modules 200.

The cooling component can cool the cooling liquid in the battery loop 1, the temperature of the cooling liquid is reduced, and the heating component can heat the cooling liquid in the battery loop 1, so that the temperature of the cooling liquid is increased.

Under low temperature condition, the cooling assembly can stop working, and the heating assembly can start working to transfer heat to the battery module 200 through the first heat exchange assembly 10, so that the temperature of the battery module 200 is increased to ensure the service life and the discharge efficiency of the battery module 200.

Under the high temperature condition, the heating assembly can stop working, and the cooling assembly can start working to absorb the heat generated by the battery module 200 through the first heat exchange assembly 10, so as to cool the battery module 200, and avoid thermal runaway of the battery module 200 in the high temperature environment.

In some embodiments, the low temperature condition may be a condition below a first preset temperature and the high temperature condition may be a condition below a second preset temperature, the first preset temperature being below the second preset temperature. The thermal management system is controlled by a control system of the vehicle, which may have a temperature sensor, and the control system may determine whether to activate the cooling assembly or the heating assembly based on a comparison of a current temperature measured by the temperature sensor with a first preset temperature and a second preset temperature.

The heating assembly may be composed mainly of a first battery cooler 31 and a heater 32. The first battery cooler 31 and the heater 32 may be connected in series in the heating circuit 4, and in addition, the first battery cooler 31 may also be connected in series in the battery circuit 1. The liquid flowing in the heating circuit 4 may be a first refrigerant.

Specifically, the first battery cooler 31 may have a first coolant channel (not shown) and a first refrigerant channel (not shown) therein, the first end of the first coolant channel may be connected to the first end of the first heat exchange assembly 10, the second end of the first coolant channel may be connected to the first end of the cooling assembly, and the second end of the cooling assembly may be connected to the second end of the first heat exchange assembly 10.

One end of the first refrigerant passage may be connected to one end of the heater 32, and the other end of the first refrigerant passage may be connected to the other end of the heater 32.

At low temperature, the heater 32 may be activated to heat the first refrigerant in the heating circuit 4, and the heated first refrigerant may flow into the first refrigerant channel through the heating circuit 4 and exchange heat with the cooling liquid in the first cooling liquid channel. The cooling liquid having absorbed the heat may flow to the first heat exchange assembly 10 through the battery loop 1 and exchange heat with the battery module 200, thereby increasing the temperature of the battery module 200.

Thus, according to the thermal management system of the embodiment of the present utility model, the cooling assembly, the heating assembly and the first heat exchange assembly 10 are connected in series in the battery loop 1, and the cooling assembly is used to cool the battery module 200 under the high temperature condition, so as to avoid thermal runaway of the battery module 200. Under the low temperature condition, the heater 32 in the heating circuit 4 is utilized to heat the first refrigerant, then the first battery cooler 31 is utilized to exchange heat between the liquid, and the heat of the first refrigerant is exchanged to the cooling liquid in the battery circuit 1, so that the purpose of heating the battery module 200 can be conveniently and rapidly realized. Therefore, under various environmental temperature environments, the battery module 200 can be quickly in a proper working temperature range through the cooperation of the refrigerating assembly and the heating assembly, so that the working efficiency and the service life of the battery are ensured.

In some alternative embodiments, the heater 32 may be a PTC heater. The PTC heater has the advantages of low cost and long service life.

According to one embodiment of the utility model, a refrigeration assembly has a cooling circuit 3, the refrigeration assembly comprising: a compressor 22, a condenser 23 and a second battery cooler 21 (condenser). A compressor 22 and a condenser 23 are connected in series in the cooling circuit 3. A second coolant passage in the second battery cooler 21 is connected in the battery circuit 1, a first coolant passage in the second battery cooler 21 is connected in the cooling circuit 3, and the coolant in the battery circuit 1 and the second coolant in the cooling circuit 3 exchange heat in the second battery cooler 21.

In other words, the refrigeration assembly may be composed mainly of the compressor 22, the condenser 23, and the second battery cooler 21. The compressor 22, the condenser 23 and the second battery cooler 21 may be connected in series in a refrigeration circuit, and the liquid flowing in the refrigeration circuit may be a second refrigerant.

The second battery cooler 21 may have a second coolant passage and a second refrigerant passage therein, a first end of the second coolant passage may be formed as a first end of the cooling assembly, and a second end of the second coolant passage may be formed as a second end of the cooling assembly. The first end of the second coolant passage may be in communication with the first end of the first coolant passage and the second end of the second coolant passage may be in communication with the second end of the first heat exchange assembly 10.

A first end of the first refrigerant channel may be connected to a first end of the compressor 22, a second end of the compressor 22 may be in communication with a first end of the condenser 23, and a second end of the condenser 23 may be in communication with a second end of the first refrigerant channel.

Under the high temperature condition, the heater 32 stops working, the first battery cooler 31 is in a bypass state, the second battery cooler 21, the compressor 22 and the condenser 23 are started, the compressor 22 can compress the second refrigerant, the compressed second refrigerant can be condensed in the condenser 23, the condensed low-temperature second refrigerant can flow into the second refrigerant channel through the refrigerating circuit and exchange heat with the cooling liquid in the second cooling liquid channel to absorb the heat of the cooling liquid in the battery circuit 1, and the cooling liquid after absorbing the heat can flow to the first heat exchange component 10 through the battery circuit 1 and exchange heat with the battery module 200, so that the temperature of the battery module 200 is reduced.

At low temperatures, the second battery cooler 21, the compressor 22 and the condenser 23 stop operating, and the second battery cooler 21 is in a bypass state.

In the present embodiment, the second battery cooler 21 is used in cooperation with the compressor 22 and the condenser 23, so that the purpose of refrigeration can be achieved, and the structure of the refrigeration assembly can be simplified.

According to other embodiments of the present utility model, the thermal management system further has an electrical drive loop 2, the thermal management system further comprising: the second heat exchange assembly 40 and the radiator 50, the second heat exchange assembly 40 is disposed at the electric driving module 300 for performing heat exchange with the electric driving module 300. The radiator 50 and the second heat exchange assembly 40 are connected in series in the electric drive loop 2, and are used for releasing heat of the cooling liquid in the electric drive loop 2, and the radiator 50 is arranged at the condenser 23.

Specifically, the electric drive circuit 2 may be used at least to cool the electric drive module 300, and the second heat exchange assembly 40 and the radiator 50 may be connected in series in the electric drive circuit 2. The liquid flowing in the electric drive circuit 2 may be a cooling liquid.

The second heat exchanging assembly 40 may be disposed at the electric driving module 300 to exchange heat with the electric driving module 300. The number of the electric driving modules 300 may be one or more, and when the number of the electric driving modules 300 is more than one, the second heat exchanging assembly 40 may exchange heat with at least one of the electric driving modules 300. Alternatively, the electric drive module may be an electric motor.

The radiator 50 may release heat of the cooling liquid to reduce the temperature of the cooling liquid. At high temperatures, the coolant may absorb heat released by the electric drive module 300 at the second heat exchange assembly 40 and then release heat again when flowing into the heat sink 50 to constitute a heat dissipation cycle.

In addition, a radiator 50 may be provided at the condenser 23. The radiator 50 and the condenser 23 may be disposed adjacently to radiate heat at the same position, which is advantageous in saving the layout space. For example, the radiator 50 and the condenser 23 may be disposed at a front end of the vehicle, and an air flow from the front end toward a rear end may be generated during the running of the vehicle, and the air flow may first pass through the radiator 50 and the condenser 23 to accelerate the heat release rate of the cooling liquid in the radiator 50 and the condenser 23, thereby improving the cooling efficiency.

In some embodiments of the present utility model, a water pump 6 is further disposed in the battery circuit 1 and the electric drive circuit 2, and the water pump 6 is used for driving the cooling liquid in the battery circuit 1 or the electric drive circuit 2 to circulate.

The battery circuit 1 may have one or more water pumps 6 therein for pumping the coolant in the battery circuit 1 to circulate between the first heat exchange assembly 10, the cooling assembly, and the heating assembly to achieve a heating cycle or a cooling cycle of the battery module 200.

The electric drive circuit 2 may have one or more water pumps 6 therein for pumping the cooling fluid in the electric drive circuit 2 to circulate between the second heat exchange assembly 40 and the radiator 50 to achieve a cooling cycle of the electric drive module 300.

According to some alternative embodiments of the present utility model, the condenser 23 and the radiator 50 in combination form at least a part of the heat radiation module 80, and the first battery cooler 31, the second battery cooler 21, the compressor 22, the water pump 6 and the heat radiation module 80 may be separately disposed in the vehicle according to the use environment and the peripheral gap requirement. Thereby, the heat radiation module 80 can be prevented from being shielded by the first battery cooler 31, the second battery cooler 21, the compressor 22 or the water pump 6, which is advantageous in reducing wind resistance and enhancing the cooling effect of the condenser 23 and the radiator 50.

In addition, the arrangement mode can enable the arrangement of each structure to be more flexible, the residual space after the arrangement of other systems in the vehicle is reasonably utilized, the arrangement mode is not limited by the layout limitation that the use environment of each cooling structure needs to be considered in the integrated module, the selectable arrangement positions are more, and the arrangement requirements of each structure are more conveniently and variously considered.

In addition, the first battery cooler 31, the second battery cooler 21, the compressor 22, the water pump 6 and the heat radiation module 80 are arranged separately, so that the inspection and maintenance are convenient if a single structure is damaged during the use process.

Separating the compressor 22 from other structures can avoid damage to other structures caused by vibration of the compressor 22 due to the greater vibration float of the compressor 22.

For example, the heat radiation module 80 may be disposed at the front end of the vehicle, and a part of the first battery cooler 31, the second battery cooler 21, the compressor 22, and the water pump 6 may be separately disposed at the front, middle, and rear ends of the vehicle to be remote from the heat radiation module 80.

According to other embodiments of the present utility model, the heat dissipation module 80 is disposed at the front end of the vehicle, and the heat dissipation module 80 further includes the fan 5. The fan 5 is provided at the rear side of the condenser 23 and the radiator 50. Therefore, the heat dissipation module 80 is arranged at the front end of the vehicle to cool the condenser 23 and the radiator 50 by using the wind generated during the running process of the vehicle, and the fan 5 is arranged at the rear side of the condenser 23 and the radiator 50, and the fan 5 can be used for sucking air to strengthen the air quantity flowing through the condenser 23 and the radiator 50 and strengthen the cooling effect of the radiator 50 and the condenser 23.

In addition, the fan 5, the radiator 50 and the condenser 23 may be mounted together by a bracket so that the radiator 50 and the condenser 23 may be supplied with air volume by one fan 5, thereby saving costs and arrangement space.

In some embodiments of the present utility model, the thermal management system further comprises a three-way valve 60.

The three-way valve 60 has a first end 61, a second end 62 and a third end 63, the first end 61 is communicated with one end of the radiator 50, the second end 62 is respectively communicated with one end of the second heat exchange assembly 40 and the other end of the radiator 50, the third end 63 is communicated with the other end of the second heat exchange assembly 40, an electric drive circuit 2 is formed among the first end 61, the third end 63, the second heat exchange assembly 40 and the radiator 50, a bypass circuit 8 is formed among the second end 62, the third end 63 and the second heat exchange assembly 40, and the three-way valve 60 is used for switching the electric drive circuit 2 and the bypass circuit 8.

As shown in fig. 1 to 3, the first end 61 and the third end 63 of the three-way valve 60 may be connected in series in the electric drive circuit 2, and the second end 62 and the third end 63 of the three-way valve 60 may be connected in series in the bypass circuit 8.

In the case of high temperature, as shown in fig. 3, heat dissipation from the electric drive module is required. At this time, the first end 61 and the third end 63 of the three-way valve 60 are connected, the second end 62 of the three-way valve 60 is closed, the fan 5 can start to work, and the cooling liquid can circulate along the electric drive loop 2 and flow through the second heat exchange assembly 40, the three-way valve 60 and the radiator 50 in order to radiate heat of the electric drive module 300.

In the case of low temperature, as shown in fig. 2, the cooling liquid is at low temperature under the influence of the external environment temperature, and the radiator 50 is not required to radiate the cooling liquid, so that the fan 5 may not work. At this time, the second end 62 of the three-way valve 60 is communicated with the third end 63, the first end 61 of the three-way valve 60 is closed, and the coolant can circulate in the bypass circuit 8.

In this embodiment, the three-way valve 60 can control the switching of the electric drive loop 2 and the bypass loop 8 according to the ambient temperature, so as to reasonably dissipate heat of the electric drive module at different ambient temperatures. At low temperatures, the shut down of the fan 5 is beneficial to reduce the energy consumption of the thermal management system.

According to some optional embodiments of the utility model, the thermal management system further comprises: three-way valve 60 and four-way valve 70. The three-way valve 60 has a first end 61, a second end 62 and a third end 63. The four-way valve 70 has a fourth end 71, a fifth end 72, a sixth end 73, and a seventh end 74.

The first end 61 communicates with one end of the heat sink 50, and the second end 62 communicates with the other end of the heat sink 50 and with one end of the second heat exchange assembly 40, respectively. The third end 63 communicates with the fourth end 71, the fifth end 72 communicates with the other end of the second heat exchange assembly 40, the sixth end 73 communicates with the second battery cooler 21, the seventh end 74 communicates with one end of the first heat exchange assembly 10, the other end of the first heat exchange assembly 10 communicates with the first battery cooler 31, and the first battery cooler 31 communicates with the second battery cooler 21. The four-way valve 70 is used to switch the connection or disconnection between the battery circuit 1 and the electric drive circuit 2.

As shown in fig. 4, a first end 61 and a third end 63 of the three-way valve 60 may be connected in series in the electric drive circuit 2, and a second end 62 and a third end 63 of the three-way valve 60 may be connected in series in the bypass circuit 8. Fourth end 71 and fifth end 72 of four-way valve 70 may be connected in electric drive circuit 2 and seventh end 74 of four-way valve 70 may be connected in battery circuit 1.

The four-way valve 70 can be used to switch between the battery circuit 1 and the electric drive circuit 2. When the fourth end 71 of the four-way valve 70 communicates with the fifth end 72 and the sixth end 73 communicates with the seventh end 74, the coolant in the battery circuit 1 and the electric drive circuit 2 each circulate independently. When the fourth end 71 of the four-way valve 70 is in communication with the seventh end 74 and the fifth end 72 is in communication with the sixth end 73, the battery circuit 1 and the electric drive circuit 2 are connected in series to form an integral circuit.

In the above low temperature condition and high temperature condition, the fourth end 71 of the four-way valve 70 communicates with the fifth end 72, and the sixth end 73 communicates with the seventh end 74. The cooling liquid circulates in the battery circuit 1 to heat or dissipate heat from the battery module 200. The coolant circulates in the electric drive circuit 2 to dissipate heat from the electric drive module 300.

When the external temperature is low enough to enable the lubricant in the electric drive module 300 to achieve the normal lubrication effect due to too low temperature, the external temperature may be lower than the third preset temperature, and the value of the third preset temperature may be lower than the value of the first preset temperature.

When the temperature sensor detects that the ambient temperature is lower than the third preset temperature, the heater 32 is started to operate, and the fan 5 and the cooling assembly are stopped. The fourth end 71 of the four-way valve 70 is in communication with the seventh end 74 such that the cooling fluid flowing out of the first heat exchange assembly 10 can flow through the four-way valve 70 to the third end 63 of the three-way valve 60, and the fifth end 72 of the four-way valve 70 is in communication with the sixth end 73 such that the cooling fluid flowing out of the second heat exchange assembly 40 can flow through the four-way valve 70 to the second battery cooler 21 and then be heated by the first battery cooler 31. The first end 61 and the third end 63 of the three-way valve 60 are in communication and the second end 62 is closed.

At this time, the cooling liquid sequentially passes through the first heat exchange assembly 10, the seventh end 74 of the four-way valve 70, the fourth end 71 of the four-way valve 70, the third end 63 of the three-way valve 60, the first end 61 of the three-way valve 60, the radiator 50, the second heat exchange assembly 40, the fifth end 72 of the four-way valve 70, the sixth end 73 of the four-way valve 70, the second battery cooler 21, and the first battery cooler 31, and then returns to the first heat exchange assembly 10, thereby forming a heating cycle. Therefore, the first heat exchange assembly 10 and the second heat exchange assembly 40 may be connected in series, and the heated coolant may pass through the first heat exchange assembly 10 and the second heat exchange assembly 40 to heat the battery module 200 and the electric drive module 300, respectively.

In this embodiment, the four-way valve 70 can control the connection and disconnection between the battery circuit 1 and the electric drive circuit 2, so as to complete the heating of the battery module 200 and the electric drive module 300 by using one heater 32 in a lower temperature environment, thereby ensuring the normal operation of the lubricating oil in the electric drive module 300 and protecting the service life of the parts in the electric drive module 300.

According to other embodiments of the present utility model, the thermal management system further comprises: a liquid storage tank 7, the liquid storage tank 7 is respectively communicated with the battery circuit 1 and the electric drive circuit 2 and is used for respectively providing cooling liquid for the battery circuit 1 and the electric drive circuit 2.

Thus, the provision of one tank 7 can supply the battery circuit 1 and the electric drive circuit 2 with the coolant, respectively, and integrate the battery circuit 1 and the electric drive circuit 2 together, with a simple arrangement. The liquid storage tank 7 can be provided with a filling port and two liquid supplementing ports, wherein one liquid supplementing port can be mainly used for supplementing liquid to the battery circuit 1, and the other liquid supplementing port can be mainly used for supplementing liquid to the electric drive circuit 2.

In other embodiments, the heater 32 and the auxiliary water tank may be disposed separately from the first battery cooler 31, the second battery cooler 21, the compressor 22, and the water pump 6, which facilitates flexible layout of the thermal management system in the vehicle.

The embodiment of the utility model also provides a vehicle, which comprises: a thermal management system and a battery module 200. The thermal management system is a thermal management system according to any of the embodiments described above. The battery module 200 is provided with a first heat exchange assembly 10.

Because the thermal management system according to the embodiment of the utility model has the technical effects described above, the vehicle according to the embodiment of the utility model also has the corresponding technical effects that the cooling assembly is utilized to cool the battery module 200 under the high temperature condition, so that the battery module 200 is prevented from thermal runaway, and the purpose of heating the battery module 200 is conveniently and rapidly realized under the low temperature condition, so that the battery module 200 can be rapidly in a proper working temperature range under various environmental temperature environments, and the working efficiency and the service life of the battery are ensured.

According to other embodiments of the present utility model, the number of the battery modules 200 is plural, the plurality of battery modules 200 are arranged along the length direction of the vehicle, and the first heat exchange assembly 10 includes a plurality of first heat exchangers 11 connected in parallel with each other, and the plurality of first heat exchangers 11 are disposed in one-to-one correspondence with the plurality of battery modules 200.

Therefore, the plurality of battery modules 200 can provide more sufficient energy storage for the vehicle, the plurality of first heat exchangers 11 are arranged in parallel, so that the heated or cooled cooling liquid can enter the plurality of first heat exchangers 11 to exchange heat with the corresponding battery modules 200 at the same time, the large difference of cooling or heating effects of the plurality of battery modules 200 is avoided, and the use environment of each battery module 200 is guaranteed to be approximately the same.

In some alternative embodiments, a water pump 6 may be connected in series to the front end of each first heat exchanger 11, and a water pump 6 may be connected between the first heat exchange assembly 10 and the first battery cooler 31 to provide sufficient circulating power for the cooling liquid.

In some embodiments of the present utility model, the thermal management system includes a second heat exchange assembly 40, the second heat exchange assembly 40 includes a plurality of second heat exchangers 41 connected in parallel with each other, and the vehicle further includes a plurality of electric drive assemblies, where the plurality of electric drive assemblies are disposed in one-to-one correspondence with the plurality of second heat exchangers 41.

Thus, providing multiple electric drive modules may provide more sufficient power to the vehicle. The plurality of second heat exchangers 41 are arranged in parallel, so that the flow direction of the cooling liquid in the electric drive loop 2 can be ensured, the heated or cooled cooling liquid can enter the plurality of second heat exchangers 41 to exchange heat with the corresponding electric drive modules 300, the large difference of the cooling or heating effects of the plurality of electric drive modules 300 is avoided, and the use environment of each electric drive module 300 is ensured to be approximately the same.

In addition, the electric drive module 300 may include a motor and a motor controller, wherein the motor controller may be configured to accept a lower maximum coolant temperature than the motor. In comparison with the case in which the coolant having an increased temperature immediately after cooling the previous electric driving module is then flowed into the next electric driving module to be cooled in the series connection, the plurality of second heat exchangers 41 are connected in parallel, so that it is possible to prevent the temperature of the coolant cooled by the previous battery module from exceeding the maximum temperature acceptable to the motor controller in the next battery module 200, resulting in the failure of the motor controller.

In some alternative embodiments, a water pump 6 may be connected in series to the front end of each second heat exchanger 41 to provide sufficient circulating power to the coolant.

In some alternative embodiments, the amphibious logistics vehicle can adopt a front-back double motor, double battery pack and double cross arm arrangement scheme. Specifically, as shown in fig. 5, the number of the battery modules 200 may be two, and the two battery modules 200 may be arranged at intervals in the length direction of the vehicle. The number of the electric driving modules 300 may be two, the two electric driving modules 300 may be arranged at intervals along the length direction of the vehicle, and the two battery modules 200 are disposed between the two electric driving modules 300. Each battery module 200 may be correspondingly provided with a first heat exchanger 11, and each electric driving module 300 may be correspondingly provided with a second heat exchanger 41.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (12)

1. A thermal management system having a battery circuit, the thermal management system comprising:

the first heat exchange component is arranged in the battery loop and is arranged at the battery module for heat exchange with the battery module,

the refrigeration component and the heating component are connected in series with the first heat exchange component in the battery loop,

the refrigerating component is used for absorbing heat of the cooling liquid in the battery loop, and the heating component is used for heating the cooling liquid in the battery loop;

the heating assembly has a heating circuit, the heating assembly comprising:

the battery cooling device comprises a first battery cooler and a heater, wherein the heater is arranged in a heating loop, a first cooling liquid channel in the first battery cooler is connected in the battery loop, a first cooling medium channel in the first battery cooler is connected in the heating loop, and cooling liquid in the battery loop and a first cooling medium in the heating loop exchange heat in the first battery cooler.

2. The thermal management system of claim 1, wherein the refrigeration assembly has a cooling circuit, the refrigeration assembly comprising:

a compressor and a condenser, the compressor and the condenser being in series in the cooling circuit;

and the second battery cooler is characterized in that a first cooling liquid channel in the second battery cooler is connected in the battery loop, a second cooling medium channel in the second battery cooler is connected in the cooling loop, and the cooling liquid in the battery loop and the second cooling medium in the cooling loop exchange heat in the second battery cooler.

3. The thermal management system of claim 2, further having an electrical drive loop, the thermal management system further comprising:

the second heat exchange component is arranged at the electric drive module and is used for carrying out heat exchange with the electric drive module;

and the radiator and the second heat exchange component are connected in series in the electric drive loop and used for releasing heat of cooling liquid in the electric drive loop, and the radiator is arranged at the condenser.

4. A thermal management system according to claim 3, wherein a water pump is further provided in each of the battery circuit and the electric drive circuit, the water pump being adapted to drive a circulation of the cooling liquid in the battery circuit or the electric drive circuit.

5. The thermal management system of claim 4, wherein the condenser and the heat sink in combination form at least a portion of a heat dissipation module, the first battery cooler, the second battery cooler, the compressor, the water pump being disposed separately from the heat dissipation module.

6. The thermal management system of claim 5, wherein the heat dissipation module is disposed at a front end of a vehicle, the heat dissipation module further comprising:

and the fan is arranged at the rear sides of the condenser and the radiator.

7. The thermal management system of claim 3, further comprising:

the three-way valve is provided with a first end, a second end and a third end, the first end is communicated with one end of the radiator, the second end and the other end of the radiator are respectively communicated with one end of the second heat exchange component, the third end is communicated with the other end of the second heat exchange component,

the first end, the third end, the second heat exchange component and the radiator form the electric drive loop,

a bypass loop is formed among the second end, the third end and the second heat exchange component,

the three-way valve is used for switching the electric drive loop and the bypass loop.

8. The thermal management system of claim 3, further comprising:

a three-way valve having a first end, a second end, and a third end;

the four-way valve is provided with a fourth end, a fifth end, a sixth end and a seventh end;

the first end is communicated with one end of the radiator, the second end is respectively communicated with one end of the second heat exchange component with the other end of the radiator,

the third end is communicated with the fourth end, the fifth end is communicated with the other end of the second heat exchange assembly, the sixth end is communicated with the second battery cooler, the seventh end is communicated with one end of the first heat exchange assembly, the other end of the first heat exchange assembly is communicated with the first battery cooler, the first battery cooler is communicated with the second battery cooler,

the four-way valve is used for switching on or off between the battery loop and the electric drive loop.

9. The thermal management system of claim 3, further comprising:

and the liquid storage tank is respectively communicated with the battery loop and the electric drive loop and is used for respectively providing cooling liquid for the battery loop and the electric drive loop.

10. A vehicle, characterized by comprising:

a thermal management system, the thermal management system being the thermal management system of any one of claims 1-9;

and the battery module is provided with the first heat exchange component.

11. The vehicle of claim 10, wherein the vehicle is further characterized by,

the number of the battery modules is multiple, the battery modules are arranged along the length direction of the vehicle, the first heat exchange assembly comprises a plurality of first heat exchangers which are mutually connected in parallel, and the plurality of first heat exchangers are arranged in one-to-one correspondence with the plurality of battery modules.

12. The vehicle of claim 10, wherein the thermal management system includes a second heat exchange assembly including a plurality of second heat exchangers connected in parallel with one another, the vehicle further comprising:

the electric driving modules are arranged in one-to-one correspondence with the second heat exchangers.