Thermal management system

Patent metadata

Field	Value
Publication number	US-11760162-B2
Application number	US-202017253058-A
Country	US
Kind code	B2
Filing date	Jun 9, 2020
Priority date	Jun 17, 2019
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

The present application relates to a thermal management system including a compressor, an outdoor heat exchanger, a first valve control device, a first indoor heat exchanger, a second indoor heat exchanger and a second valve control device connected by pipelines. The thermal management system includes a heating and dehumidifying mode. In the heating and dehumidifying mode, the compressor, the first indoor heat exchanger, the second valve control device, the second indoor heat exchanger, the first valve control device and the outdoor heat exchanger are in communication to form a loop. The first valve control device and the second valve control device both include a communication mode and a throttle mode. In the heating and dehumidifying mode, the second valve control device is in the throttle mode, and the first valve control device is in the throttle mode or the communication mode. In the cooling mode, the first valve control device is in the throttle mode, and the second valve control device is in the communication mode or the throttle mode.

First claim

What is claimed is:

1. A thermal management system, comprising: a compressor, an outdoor heat exchanger, a first valve control device, a first indoor heat exchanger, a second indoor heat exchanger and a second valve control device, the compressor, the outdoor heat exchanger, the first valve control device, the first indoor heat exchanger, the second indoor heat exchanger and the second valve control device being connected by pipelines, the thermal management system comprising a cooling mode and a heating and dehumidifying mode; wherein
in the cooling mode: the first valve control device and the second valve control device are opened; the compressor, the outdoor heat exchanger, the first valve control device, the second indoor heat exchanger, the second valve control device and the first indoor heat exchanger are in communication to form a loop; a refrigerant compressed by the compressor is adapted to flow in sequence through the outdoor heat exchanger, the first valve control device, the second indoor heat exchanger, the second valve control device and the first indoor heat exchanger, and enters the compressor again to circulate in this way;
in the heating and dehumidifying mode: the first valve control device and the second valve control device are opened; the compressor, the first indoor heat exchanger, the second valve control device, the second indoor heat exchanger, the first valve control device and the outdoor heat exchanger are in communication to form a loop; the refrigerant compressed by the compressor is adapted to flow in sequence through the first indoor heat exchanger, the second valve control device, the second indoor heat exchanger, the first valve control device and the outdoor heat exchanger, and enters the compressor again to circulate in this way;
wherein the first valve control device and the second valve control device both include a fully open mode and a throttle mode; in the heating and dehumidifying mode, the second valve control device is in the throttle mode, and the first valve control device is in the throttle mode or the fully open mode; in the cooling mode, the first valve control device is in the throttle mode, and the second valve control device is in the fully open mode or the throttle mode;
wherein the thermal management system further comprises a third valve control device and a coolant circulation loop; the coolant circulation loop comprises a battery heat exchange unit, a first fluid driving device and a second heat exchanger which are communicated by pipelines; the second heat exchanger comprises a third heat exchange portion and a fourth heat exchange portion which are capable of exchanging heat;
the thermal management system comprises a first battery cooling mode and in the first battery cooling mode;
the first fluid driving device and the third valve control device are opened, and the battery heat exchange unit, the first fluid driving device and the third heat exchange portion are in communication to form a loop; the compressor, the outdoor heat exchanger, the third valve control device and the fourth heat exchange portion are in communication to form a loop.

2. The thermal management system according to claim 1 , wherein the thermal management system further comprises a heating mode in which the first valve control device and the second valve control device are opened; the compressor, the first indoor heat exchanger, the second valve control device, the second indoor heat exchanger, the first valve control device and the outdoor heat exchanger are in communication to form a loop; the refrigerant compressed by the compressor is adapted to flow in sequence through the first indoor heat exchanger, the second valve control device, the second indoor heat exchanger, the first valve control device and the outdoor heat exchanger, and enters the compressor again to circulate in this way; and wherein the first valve control device is in the throttle mode, and the second valve control device is in the fully open mode or the throttle mode.

3. The thermal management system according to claim 2 , wherein the second valve control device comprises a first branch, a second branch and a third branch; the first branch, the second branch and the third branch are arranged in parallel; the first branch is provided with a first throttle unit, the second branch is provided with a second throttle unit, and the third branch is provided with a control valve unit;
in the heating and dehumidifying mode, the second throttle unit and the control valve unit are closed, and the first throttle unit is opened and throttles the first branch;
in the heating mode, the first throttle unit is closed; and the second throttle unit is closed, the control valve unit is opened, and the third branch is in communication; or, the control valve unit is closed, and the second throttle unit is opened and throttles the second branch;
in the cooling mode, the first throttle unit and the second throttle unit are closed, the control valve unit is opened, and the third branch is in communication.

4. The thermal management system according to claim 3 , wherein the first valve control device comprises a fourth branch and a fifth branch which are arranged in parallel; the fourth branch is provided with a third throttle unit, and the fifth branch is provided with a fourth throttle unit; in the heating mode and the heating and dehumidifying mode, the fourth throttle unit is closed, and the third throttle unit is opened and throttles the fourth branch; in the cooling mode, the third throttle unit is closed, and the fourth throttle unit is opened and throttles the fifth branch.

5. The thermal management system according to claim 2 , further comprising a first fluid switching device having a first port, a second port, a third port and a fourth port, the first port being in communication with an inlet of the compressor, the second port being in communication with the outdoor heat exchanger, the third port being in communication with an outlet of the compressor, and the fourth port being in communication with the first indoor heat exchanger;
in the heating mode or the heating and dehumidifying mode, the first port and the second port being in communication, and the third port and the fourth port being in communication; in the cooling mode, the first port and the fourth port being in communication, and the second port and the third port being in communication.

6. The thermal management system according to claim 1 , further comprising a first heat exchanger having a first heat exchange portion and a second heat exchange portion which are capable of exchanging heat, the first heat exchange portion comprising a first connection port and a second connection port, the second heat exchange portion comprising a third connection port and a fourth connection port, the first connection port being in communication with the outdoor heat exchanger, the second connection port being in communication with the first valve control device, the third connection port being in communication with an inlet of the compressor, and the fourth connection port being in communication with the outdoor heat exchanger or the first indoor heat exchanger.

7. The thermal management system according to claim 1 , wherein the coolant circulation loop further comprises a heater, the thermal management system comprises a battery preheating mode in which the first fluid driving device and the heater are opened, the third valve control device is closed, and the battery heat exchange unit, the first fluid driving device, the third heat exchange portion and the heater are in communication to form a loop.

8. The thermal management system according to claim 7 , wherein the coolant circulation loop further comprises a heat dissipation de

Assignees

• Hangzhou Sanhua Res Inst Co Ltd

Inventors

• Dong Junqi
• Jia Shiwei
• An Jie

Classifications

• B60H1/00007 Primary

  Combined heating, ventilating, or cooling devices (control systems or mechanisms B60H1/00642) · CPC title

• B60H1/00485 Primary

  Valves for air-conditioning devices, e.g. thermostatic valves · CPC title

• B60H1/00921 Primary

  where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct · CPC title

• B60H1/00278

  for the battery · CPC title

• B60L58/26

  by cooling · CPC title