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CN-121989614-A - Thermal management system

CN121989614ACN 121989614 ACN121989614 ACN 121989614ACN-121989614-A

Abstract

The application discloses a heat management system, which comprises a compressor, a first heat exchange part, a first throttling device and a third heat exchange part, wherein the first throttling device is in a throttling state, the first pump and a battery heat exchange device are communicated, the second pump, the second heat exchange part and a warm air core are communicated, the third pump, the fourth heat exchange part, a motor heat exchange device and the heat exchanger are communicated, the third pump, the fourth heat exchange part and the cold air core are communicated, and a loop in which the first pump is located, a loop in which the second pump is located and a loop in which the third pump is located are isolated from each other. According to the heat management system, in the first heating and dehumidifying mode, the motor is cooled through the heat exchanger, the loop where the battery heat exchange device is located and the loop where the motor heat exchange device is located are isolated from each other, and the protection of the battery can be achieved.

Inventors

  • Request for anonymity

Assignees

  • 浙江三花绿能实业集团有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (10)

  1. 1. The heat management system is characterized by comprising a first heat exchanger and a second heat exchanger, wherein the first heat exchanger comprises a first heat exchange part and a second heat exchange part which are isolated from each other, and the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part which are isolated from each other; The thermal management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant system comprises a compressor, a first throttling device, a first heat exchange part and a third heat exchange part, an outlet of the compressor can be communicated with an inlet of the first heat exchange part, an outlet of the first heat exchange part can be communicated with an inlet of the first throttling device, an outlet of the first throttling device can be communicated with an inlet of the third heat exchange part, and an outlet of the third heat exchange part can be communicated with an inlet of the compressor; The heat management system is provided with a first heating and dehumidifying mode, in the first heating and dehumidifying mode, the compressor, the first heat exchange part, the first throttling device and the third heat exchange part are communicated, the first throttling device is in a throttling state, the first pump, the battery heat exchange device are communicated, the second pump, the second heat exchange part and the warm air core are communicated, the third pump, the fourth heat exchange part, the motor heat exchange device and the heat exchanger are communicated, the third pump, the fourth heat exchange part and the cold air core are communicated, and the loop where the first pump is located, the loop where the second pump is located and the loop where the third pump is located are isolated from each other.
  2. 2. The thermal management system of claim 1, wherein the thermal management system has a first heating mode in which the compressor, the first heat exchange portion, the first throttling device, and the third heat exchange portion are in communication, the first throttling device is in a throttled state, the first pump, the battery heat exchange device are in communication, the second pump, the second heat exchange portion, and the warm air core are in communication, the third pump, the fourth heat exchange portion, the motor heat exchange device, and the heat exchanger are in communication, and the loop in which the first pump is located, the loop in which the second pump is located, and the loop in which the third pump is located are isolated from each other.
  3. 3. The thermal management system of claim 2, wherein the coolant system comprises a flow direction switching device having ten ports defining ten ports in sequence, a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, the flow direction switching device in either communication state, the first port in communication with the second port, the third port in communication with the fourth port, the fifth port in communication with the sixth port, the seventh port in communication with the tenth port, the eighth port in communication with the ninth port, the first port being one of the first port, the second port, the fifth port, the seventh port, the ninth port; The cooling liquid system comprises a first multifunctional branch, a second multifunctional branch, a heat exchange branch, a battery branch and an auxiliary branch, wherein the battery branch comprises a first pump and a battery heat exchange device, two ports of the battery branch can be respectively communicated with the first port and the eighth port, the first multifunctional branch comprises the second pump, the motor heat exchange device, the warm air core and the second heat exchange part, two ports of the first multifunctional branch can be respectively communicated with the second port and the fifth port, the heat exchange branch comprises the heat exchanger, two ports of the heat exchange branch can be respectively communicated with the third port and the sixth port, the second multifunctional branch comprises the third pump, the cold air core and the fourth heat exchange part, two ports of the second multifunctional branch can be respectively communicated with the fourth port and the seventh port, the auxiliary branch is a pipeline which can be used for communication, and the two ports of the auxiliary branch can be respectively communicated with the ninth port; In the first heating mode and the first heating and dehumidifying mode, the flow direction switching device is in a first communication state, the first port is a second port, the first port is communicated with the eighth port, the second port is communicated with the third port, the fourth port is communicated with the fifth port, the sixth port is communicated with the seventh port, the ninth port is communicated with the tenth port, the battery branch is self-formed into a loop, and the auxiliary branch is self-formed into a loop.
  4. 4. The thermal management system of claim 3, wherein the first multi-functional branch comprises a first branch, a second branch, a third branch, a fourth branch, and a first multi-way valve, the first branch comprising the motor heat exchange device, the second branch comprising a first valve element, the first valve element having an on-state and an off-state, the third branch comprising the warm air core, the fourth branch comprising the second pump and the second heat exchange portion, an outlet of the second pump being communicable with an inlet of the second heat exchange portion; the first multi-way valve comprises a first valve port, a second valve port and a third valve port, wherein the first valve port is communicated with at least one of the second valve port and the third valve port, an outlet of the first branch can be communicated with an inlet of the second branch and/or an inlet of the fourth branch, an outlet of the second branch and/or the third valve port can be communicated with the fifth port, an inlet of the third branch can be communicated with the second valve port, an outlet of the third branch can be communicated with an inlet of the fourth branch, an outlet of the fourth branch can be communicated with the first valve port, and an inlet of the first branch can be communicated with the second port; In the first heating mode and the first heating and dehumidifying mode, the first valve port is communicated with the second valve port, the first valve port is blocked from the third valve port, the first valve member is in a conducting state, the first branch, the second multifunctional branch and the heat exchange branch are communicated, and the third branch is communicated with the fourth branch.
  5. 5. The thermal management system of claim 4, wherein said second multi-functional branch comprises a first branch, a second branch, a third branch, and a second multi-way valve, said first branch comprising a second valve element, said second valve element having an on state and an off state, said second branch comprising said cold air core, said third branch comprising said third pump and said fourth heat exchange portion, an outlet of said third pump being communicable with an inlet of said fourth heat exchange portion; the second multi-way valve is provided with a first interface, a second interface and a third interface, the first interface is communicated with at least one of the second interface and the third interface, the fourth port can be communicated with an inlet of the first branch and/or an inlet of the third branch, an outlet of the first branch and/or the third interface can be communicated with the seventh port, an inlet of the second branch can be communicated with the second interface, an outlet of the second branch can be communicated with an inlet of the third branch, and an outlet of the third branch can be communicated with the first interface; In the first heating mode, the first interface is communicated with the third interface, the first interface is cut off from the second interface, the second valve element is in a cut-off state, and the third branch, the heat exchange branch, the first branch and the second branch are communicated; in the first heating and dehumidifying mode, the first interface is communicated with the third interface, the third branch, the heat exchange branch, the first branch and the second branch are communicated, the first interface is communicated with the second interface, and the third branch is communicated with the second branch.
  6. 6. The thermal management system of claim 5, wherein said first valve member is a one-way valve or a shut-off valve, said first valve member is in an on-state, said first branch communicates with said fifth port through said second branch, said first valve member is in an off-state, said first branch and said fifth port are isolated from each other at said second branch, and/or, The second valve element is a one-way valve or a stop valve, the second valve element is in a conducting state, the fourth port is communicated with the seventh port through the first branch, the second valve element is in a stop state, and the fourth port and the seventh port are mutually isolated at the first branch.
  7. 7. The thermal management system of claim 5 or 6, wherein the thermal management system has a second heating mode, a third heating mode, and a second heating dehumidification mode, wherein in the second heating mode, the third heating mode, and the second heating dehumidification mode, the compressor, the first heat exchange portion, the first throttling device, and the third heat exchange portion are in communication, the first throttling device is in a throttled state, the flow direction switching device is in a second communication state, the first port is a seventh port, the first port is in communication with the second port, the third port is in communication with the sixth port, the fourth port is in communication with the fifth port, the seventh port is in communication with the eighth port, the ninth port is in communication with the tenth port, the auxiliary branch is self-loop, the first valve port is in communication with the second valve port, the first interface is in communication with the third interface, the first valve element is in communication with the third valve element, the first valve element is in communication with the second heat exchange device, the fourth valve element is in communication with the fourth valve element, the fourth valve element is in communication with the fourth heat exchange device, the fourth valve element is in communication with the fourth valve element, and the fourth valve element is in communication with the fourth heat exchange; The first valve port is cut off from the third valve port in the second heating mode, the first interface is cut off from the second interface in the second heating and dehumidifying mode, the first valve port is cut off from the third valve port in the second heating and dehumidifying mode, the first interface is communicated with the second interface, the third pump, the fourth heat exchange portion and the cold air core are communicated, the first valve port is communicated with the third valve port in the third heating mode, the first interface is cut off from the second interface, the second pump, the second heat exchange portion, the second valve member, the first pump, the battery heat exchange device and the motor heat exchange device are communicated, and the second pump, the second heat exchange portion, the third pump, the fourth heat exchange portion, the first pump, the battery heat exchange device and the motor heat exchange device are communicated.
  8. 8. The thermal management system of claim 5 or 6, wherein the thermal management system has a first cooling mode and a first cooling and dehumidification mode, wherein in the first cooling mode and the first cooling and dehumidification mode, the compressor, the first heat exchange portion, the first throttling device, and the third heat exchange portion are in communication, the first throttling device is in a throttled state, the flow direction switching device is in a third communication state, the first port is a first port, the first port is in communication with the second port, the third port is in communication with the fourth port, the fifth port is in communication with the sixth port, the seventh port is in communication with the tenth port, the eighth port is in communication with the ninth port, the first valve port is in communication with the third valve port, the first port is in communication with the second port, the first port is off, the first valve member is in a off state, the second port is in a on state, the third valve member is in communication with the fourth heat exchange portion, the fourth valve member is in communication with the fourth heat exchange port, the fourth valve member is in communication with the fourth valve member, the cold air pump is in communication with the fourth valve member, and the cold air exchange device is in communication with the fourth valve member; In the first refrigeration mode, the first valve port is communicated with the second valve port, and in the first refrigeration dehumidification mode, the second pump, the second heat exchange part and the warm air core are communicated.
  9. 9. The thermal management system of any one of claims 1 to 6, wherein said refrigerant system has a second throttling device, an inlet of said second throttling device being communicable with an outlet of said compressor, an outlet of said second throttling device being communicable with said compressor inlet; The thermal management system has a hot gas bypass mode in which the compressor, the first heat exchange portion, the first throttling device, and the third heat exchange portion are in communication, the compressor, the second throttling device, the first throttling device, and the second throttling device are in a throttled state, the first pump, the battery heat exchange device, and the motor heat exchange device are in communication, the first pump, the battery heat exchange device, the motor heat exchange device, the second pump, and the second heat exchange portion are in communication, and the second pump, the second heat exchange portion, and the warm air core are in communication.
  10. 10. The thermal management system of any one of claims 3 to 6, wherein said flow direction switching device is in a fourth communication state, said first port is a fifth port, said first port is in communication with said fourth port, said second port is in communication with said third port, said fifth port is in communication with said sixth port, said seventh port is in communication with said eighth port, and said ninth port is in communication with said tenth port; The flow direction switching device is in a fifth communication state, the first port is a ninth port, the first port is communicated with the second port, the third port is communicated with the fourth port, the fifth port is communicated with the eighth port, the sixth port is communicated with the seventh port, and the ninth port is communicated with the tenth port.

Description

Thermal management system Technical Field The application relates to the technical field of thermal management, in particular to a thermal management system for a vehicle. Background In the related art, in a heating and dehumidifying mode, a first liquid pump and a water-cooling condenser are communicated with a warm air core, a second liquid pump and a water-cooling evaporator are communicated with a cold air core, a third liquid pump and a motor heat exchange device are communicated with a battery heat exchange device, and in order to prevent the motor from being too high in temperature, the third liquid pump is required to be started all the time, so that cooling liquid flows circularly. However, in some cases, the battery has no heat exchange requirement, and the higher-temperature cooling liquid flowing out of the motor heat exchange device flows to the battery heat exchange device to heat the battery, so that the battery is at an unsuitable temperature, and the service life of the battery is reduced after long-term use. Disclosure of Invention The application aims to provide a thermal management system capable of protecting a battery. In order to achieve the aim, the application adopts the following technical scheme that the heat management system comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger comprises a first heat exchange part and a second heat exchange part which are isolated from each other, and the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part which are isolated from each other; The thermal management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant system comprises a compressor, a first throttling device, a first heat exchange part and a third heat exchange part, an outlet of the compressor can be communicated with an inlet of the first heat exchange part, an outlet of the first heat exchange part can be communicated with an inlet of the first throttling device, an outlet of the first throttling device can be communicated with an inlet of the third heat exchange part, and an outlet of the third heat exchange part can be communicated with an inlet of the compressor; The heat management system is provided with a first heating and dehumidifying mode, in the first heating and dehumidifying mode, the compressor, the first heat exchange part, the first throttling device and the third heat exchange part are communicated, the first throttling device is in a throttling state, the first pump, the battery heat exchange device are communicated, the second pump, the second heat exchange part and the warm air core are communicated, the third pump, the fourth heat exchange part, the motor heat exchange device and the heat exchanger are communicated, the third pump, the fourth heat exchange part and the cold air core are communicated, and the loop where the first pump is located, the loop where the second pump is located and the loop where the third pump is located are isolated from each other. In the heat management system, in a first heating and dehumidifying mode, a first pump is communicated with a battery heat exchange device, a third pump, a fourth heat exchange part, a motor heat exchange device and a heat exchanger are communicated, and a loop where the first pump is located, a loop where the second pump is located and a loop where the third pump is located are isolated from each other. The circuit where the battery heat exchange device is located is isolated from the circuit where the motor heat exchange device is located, the motor heat exchange device is communicated with the heat exchanger, the motor is cooled through the heat exchanger, the problem that the temperature of the motor affects the service life of the battery in a heating and dehumidifying mode in the related technology is solved, and the battery can be protected. Drawings FIG. 1 is a schematic connection diagram of one embodiment of a refrigerant system of a thermal management system of the present application; FIG. 2 is a schematic illustration of the connection of the refrigerant system of FIG. 1 in a hot gas bypass mode of operation; FIG. 3 is a schematic connection diagram of one embodiment of a coolant system of the thermal management system of the present application; FIG. 4 is a schematic diagram of the connection of the coolant system of FIG. 3 in a state of the first mode of operation; FIG. 5 is a schematic diagram of the connection of FIG. 3 showing the coolant system in another state of the first mode of operation; FIG. 6 is a schematic diagram of the connection of the coolant system of FIG. 3 in a state of the second mode of operation; FIG. 7 is a schematic diagram of the connection of FIG. 3 showing the coolant system in another state of the second mode of operation; FIG. 8 is a schematic diagram of the connection of the coolant system of FIG. 3 in a state of a third mode of operation; FIG