CN-116834498-B - Thermal management system

CN116834498BCN 116834498 BCN116834498 BCN 116834498BCN-116834498-B

Abstract

The application discloses a heat management system, which is characterized in that in a first defrosting mode, a second heat exchange part is communicated with a third heat exchanger, a fourth heat exchange part is communicated with a fourth heat exchanger, a fifth heat exchanger is communicated with a motor heat exchange device, the fourth heat exchanger exchanges heat with the atmosphere, in a second defrosting mode, the second heat exchange part, the fourth heat exchanger and the third heat exchanger are communicated, the fourth heat exchange part, the fifth heat exchanger and the motor heat exchange device are communicated, and the fifth heat exchanger exchanges heat with the atmosphere. The heat management system can alternately operate the first defrosting mode and the second defrosting mode, delay or avoid frosting of the fourth heat exchanger and the fifth heat exchanger, fully utilize the heat of the atmospheric environment and ensure the heating requirement of the passenger cabin.

Inventors

ZHANG PEILAN
WANG XILONG
YIN BIN
Request for anonymity

Assignees

杭州三花研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20220601

Claims (10)

1. The heat management system is characterized by comprising a compressor, a throttling device, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a fifth heat exchanger and a motor heat exchange device, wherein the first heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part is not communicated with the second heat exchange part, the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part, and the third heat exchange part is not communicated with the fourth heat exchange part; The heat management system is provided with a first defrosting mode and a second defrosting mode, in the first defrosting mode and the second defrosting mode, the compressor, the first heat exchange part, the throttling device and the third heat exchange part are communicated, the throttling device is in a throttling state, the second heat exchange part absorbs heat from the first heat exchange part, and the third heat exchange part absorbs heat from the fourth heat exchange part; In the first defrosting mode, the second heat exchange part is communicated with the third heat exchanger, the fourth heat exchange part is communicated with the fourth heat exchanger, the fifth heat exchanger is communicated with the motor heat exchange device, and the fourth heat exchanger exchanges heat with the atmospheric environment; in the second defrosting mode, the second heat exchange part, the fourth heat exchanger and the third heat exchanger are communicated, the fourth heat exchange part, the fifth heat exchanger and the motor heat exchange device are communicated, and the fifth heat exchanger exchanges heat with the atmospheric environment; The thermal management system is capable of alternately operating the first defrost mode and the second defrost mode.
2. A thermal management system according to claim 1, further comprising a first conduit and a first valve, said first valve having a port a, a port b and a port c, one end of said first conduit being communicable with port b of said first valve, an inlet of said fourth heat exchanger being communicable with port a of said first valve, an outlet of said second heat exchange portion being communicable with port c of said first valve, an outlet of said fourth heat exchanger and another end of said first conduit being communicable with an inlet of said third heat exchanger, respectively, an outlet of said third heat exchanger being communicable with an inlet of said second heat exchange portion; The first valve is a proportional valve, and if the port c of the first valve is simultaneously communicated with the port a of the first valve and the port b of the first valve, the first valve can control the proportion of the fluid flowing through the first pipeline and the fluid flowing through the fourth heat exchanger.
3. The thermal management system of claim 2, wherein in said second defrost mode, port a of said first valve, port b of said first valve and port c of said first valve are in communication, said second heat exchange portion, said fourth heat exchanger and said third heat exchanger are in communication, and said second heat exchange portion, said first conduit and said third heat exchanger are in communication; Or, the port b of the first valve is communicated with the port c of the first valve, and the second heat exchange part, the first pipeline and the third heat exchanger are communicated; Or, the port a of the first valve is communicated with the port c of the first valve, and the second heat exchange part, the fourth heat exchanger and the third heat exchanger are communicated.
4. A thermal management system according to claim 1, further comprising a second conduit and a second valve, the second valve having a port a, a port b and a port c, the outlet of the motor heat exchanger being communicable with the inlet of the fifth heat exchanger or one end of the second conduit, the other end of the second conduit being communicable with the port a of the second valve, the outlet of the fifth heat exchanger being communicable with the port b of the second valve, the port c of the second valve being communicable with the inlet of the fourth heat exchanger or the inlet of the motor heat exchanger, the outlet of the fourth heat exchanger being communicable with the inlet of the motor heat exchanger.
5. The thermal management system of claim 4, wherein in said second defrost mode, port b of said second valve is in communication with port c of said second valve, said fourth heat exchange portion, said fifth heat exchanger and said motor heat exchange device are in communication; or, the port a of the second valve is communicated with the port c of the second valve, and the fourth heat exchange part, the second pipeline and the motor heat exchange device are communicated.
6. A thermal management system according to claim 1, further comprising a battery heat exchange device; The heat management system further comprises a third defrosting mode, in the third defrosting mode, the compressor, the first heat exchange portion, the throttling device and the third heat exchange portion are communicated, the throttling device is in a throttling state, the second heat exchange portion absorbs heat from the first heat exchange portion, the third heat exchange portion absorbs heat from the fourth heat exchange portion, the second heat exchange portion is communicated with the third heat exchanger, and the fourth heat exchange portion exchanges heat with the battery heat exchange device.
7. The thermal management system of claim 6, wherein said thermal management system comprises a first intermediate heat exchanger, said first intermediate heat exchanger comprising a fifth heat exchange portion and a sixth heat exchange portion, said fifth heat exchange portion not in communication with said sixth heat exchange portion; In the third defrosting mode, the fourth heat exchange part is communicated with the fifth heat exchange part, the sixth heat exchange part is communicated with the battery heat exchange device, and the fifth heat exchange part obtains heat from the sixth heat exchange part.
8. The thermal management system of claim 7, wherein said thermal management system comprises a second intermediate heat exchanger, said second intermediate heat exchanger comprising a seventh heat exchange portion and an eighth heat exchange portion, said seventh heat exchange portion not in communication with said eighth heat exchange portion; The heat management system further has a fourth defrosting mode in which the compressor, the first heat exchange portion, the throttling device and the third heat exchange portion are communicated, the throttling device is in a throttling state, the second heat exchange portion absorbs heat from the first heat exchange portion, the third heat exchange portion absorbs heat from the fourth heat exchange portion, the second heat exchange portion is communicated with the third heat exchanger, the second heat exchange portion is communicated with the seventh heat exchange portion, the fourth heat exchange portion is communicated with the fifth heat exchange portion, the sixth heat exchange portion is communicated with the eighth heat exchange portion, the fifth heat exchange portion obtains heat from the sixth heat exchange portion, and the eighth heat exchange portion obtains heat from the seventh heat exchange portion.
9. A thermal management system according to claim 1, wherein the thermal management system has a first heating mode in which the compressor, the first heat exchange portion, the throttling means and the third heat exchange portion are in communication, the throttling means is in a throttled state, the second heat exchange portion absorbs heat from the first heat exchange portion, the third heat exchange portion absorbs heat from the fourth heat exchange portion, the second heat exchange portion is in communication with the third heat exchanger, the fourth heat exchange portion is in communication with the fourth heat exchanger or the fifth heat exchanger, and the fourth heat exchanger and the fifth heat exchanger are in heat exchange with the atmosphere, respectively.
10. The thermal management system of claim 8, wherein said thermal management system has a second heating mode in which said compressor, said first heat exchange portion, said throttling means, and said third heat exchange portion are in communication, said throttling means is in a throttled state, said second heat exchange portion is in communication with said seventh heat exchange portion, said eighth heat exchange portion is in communication with said battery heat exchange means, said fourth heat exchange portion is in communication with said fourth heat exchanger or said fifth heat exchanger, said fourth heat exchange portion and said fifth heat exchange portion are in heat exchange with the ambient atmosphere, respectively, said second heat exchange portion absorbs heat from said first heat exchange portion, said third heat exchange portion absorbs heat from said fourth heat exchange portion, and said eighth heat exchange portion acquires heat from said seventh heat exchange portion; The thermal management system comprises a third pipeline and a first multi-way device, wherein the first multi-way device is provided with a port a, a port b and a port c, the port a of the first multi-way device can be communicated with the inlet of the eighth heat exchange part, the port b of the first multi-way device can be communicated with the outlet of the sixth heat exchange part, the port c of the first multi-way device can be communicated with one end of the third pipeline, the outlet of the battery heat exchange device can be communicated with the other end of the third pipeline or the inlet of the sixth heat exchange part, and the outlet of the eighth heat exchange part can be communicated with the inlet of the battery heat exchange device; in the third defrosting mode and the fourth defrosting mode, the port a of the first multi-way device is communicated with the port b of the first multi-way device, and in the second heating mode, the port a of the first multi-way device is communicated with the port c of the first multi-way device.

Description

Thermal management system Technical Field The application relates to the technical field of heat exchange, in particular to a thermal management system. Background A thermal management system of a vehicle (e.g., an electric vehicle) may regulate the ambient temperature within the passenger compartment and thermally manage the battery. When the temperature is lower in winter, the heat management system starts a heating mode, the indoor heat exchanger releases heat to meet the heating requirement of the passenger cabin, and the outdoor heat exchanger absorbs heat from the atmospheric environment. However, due to the low temperature of the external environment, the outdoor heat exchanger can frost after the heating mode is operated for a period of time, and the heat absorption capacity of the outdoor heat exchanger is reduced, so that the heating effect is affected. In the related heat management system, when the outdoor heat exchanger frosts, the heat management system is switched to a defrosting mode, the outdoor heat exchanger releases heat to improve the frosting phenomenon, but at the moment, the indoor heat exchanger absorbs heat, so that the temperature of a passenger cabin is reduced, and the comfort of passengers is reduced. The inventors believe that there is a need for improvement. Disclosure of Invention In view of the above problems in the related art, the present application provides a thermal management system with good heating effect in a defrosting mode. In order to achieve the aim, the heat management system comprises a compressor, a first heat exchanger, a second heat exchanger, a throttling device, a third heat exchanger, a fourth heat exchanger, a fifth heat exchanger and a motor heat exchange device, wherein the first heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part is not communicated with the second heat exchange part, the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part, and the third heat exchange part is not communicated with the fourth heat exchange part; the heat management system comprises a first defrosting mode and a second defrosting mode, wherein in the first defrosting mode and the second defrosting mode, the compressor, the first heat exchange part, the throttling device and the third heat exchange part are communicated, the throttling device is in a throttling state, the second heat exchange part absorbs heat from the first heat exchange part, the third heat exchange part absorbs heat from the fourth heat exchange part, in the first defrosting mode, the second heat exchange part is communicated with the third heat exchanger, the fourth heat exchange part is communicated with the fourth heat exchanger, the fifth heat exchanger is communicated with the motor heat exchange device, the fourth heat exchanger is in heat exchange with the atmosphere, in the second defrosting mode, the second heat exchange part, the fourth heat exchanger and the third heat exchanger are communicated, the fourth heat exchange part, the fifth heat exchanger and the motor heat exchange device are communicated, the fifth heat exchanger is in heat exchange with the atmosphere, and the first defrosting mode can alternately operate. In the first defrosting mode, the heat management system acquires heat from the atmospheric environment through the fourth heat exchanger, frosting of the fifth heat exchanger or defrosting of the fifth heat exchanger is delayed through the motor heat exchange device, and in the second defrosting mode, the heat management system acquires heat from the atmospheric environment through the fifth heat exchanger, and fluid flowing out through the second heat exchange part delays frosting of the fourth heat exchanger or defrosting of the fourth heat exchanger. The heat management system alternately operates the first defrosting mode and the second defrosting mode, frosting of the fourth heat exchanger and the fifth heat exchanger is delayed or avoided, heat of the atmospheric environment can be fully utilized, and heating requirements of the passenger cabin are ensured. Drawings FIG. 1 is a schematic diagram of one embodiment of a thermal management system of the present application; FIG. 2 is a schematic diagram of a first cooling mode of an embodiment of a thermal management system of the present application; FIG. 3 is a schematic diagram of a second cooling mode of an embodiment of a thermal management system of the present application; FIG. 4 is a schematic diagram of a third cooling mode of an embodiment of a thermal management system of the present application; FIG. 5 is a schematic diagram of a first heating mode one of an embodiment of a thermal management system of the present application; FIG. 6 is a schematic diagram of a first heating mode two of an embodiment of a thermal management system of the present application; FIG. 7 is a schematic diagram of a first heating