Search

CN-122003333-A - Temperature adjusting device

CN122003333ACN 122003333 ACN122003333 ACN 122003333ACN-122003333-A

Abstract

A temperature control device for a vehicle, which is provided with an electric drive unit (23) that outputs power for traveling, a battery (24) that supplies electric power to the electric drive unit, and a vehicle air conditioning device that includes a refrigeration cycle (10) in which a refrigerant circulates, is provided with a heat medium circuit (21) in which a heat medium that exchanges heat with the electric drive unit and the battery circulates, a heat exchange unit (16) that is provided in the heat medium circuit and exchanges heat between the heat medium that exchanges heat with the electric drive unit and the battery and the refrigerant, and a circuit switching unit (40) that is provided in the heat medium circuit in connection with the electric drive unit, the battery, and the heat exchange unit, and switches the heat medium circuit. The circuit switching unit switches the heat medium circuit to form a first circuit for guiding the heat medium heat-exchanged in the electric drive unit to the battery, a second circuit for guiding the heat medium heat-exchanged in the electric drive unit to the heat exchange unit, and a third circuit for returning the heat medium heat-exchanged in the battery to the battery while bypassing the electric drive unit and the heat exchange unit.

Inventors

  • Iizuka Jizheng
  • Blue or greenly highly to stretch
  • TAKEDA TETSUMA

Assignees

  • 株式会社电装

Dates

Publication Date
20260508
Application Date
20240912
Priority Date
20230928

Claims (8)

  1. 1. A temperature control device for use in a vehicle having an electric drive unit (23) that outputs power for traveling, a battery (24) that supplies electric power to the electric drive unit, and an air conditioning device for a vehicle including a refrigeration cycle (10) in which a refrigerant circulates, the temperature control device comprising: a heat medium circuit (21) for circulating a heat medium that exchanges heat with the electric drive unit and the battery; a heat exchange unit (16) provided in the heat medium circuit and configured to exchange heat between the heat medium heat-exchanged in the electric drive unit and the battery and the refrigerant, and A circuit switching unit (40) connected to the electric drive unit, the battery, and the heat exchange unit and provided in the heat medium circuit, for switching the heat medium circuit, The circuit switching unit switches the heat medium circuit to form a first circuit for guiding the heat medium heat-exchanged in the electric drive unit to the battery, a second circuit for guiding the heat medium heat-exchanged in the electric drive unit to the heat exchange unit, and a third circuit for returning the heat medium heat-exchanged in the battery to the battery while bypassing the electric drive unit and the heat exchange unit.
  2. 2. A temperature regulating device according to claim 1, wherein, The circuit switching unit switches the heat medium circuit to form a fourth circuit for guiding the heat medium, which has undergone heat exchange in the electric drive unit and the battery, to the heat exchange unit.
  3. 3. A temperature regulating device according to claim 1, wherein, Comprises pressure-feed units (25 b, 25 c) for pressure-feeding the heat medium in the heat medium circuit, The first circuit is configured by the circuit switching unit, the pumping unit, and a pipe for forming the heat medium.
  4. 4. A temperature regulating device according to claim 1, wherein, Comprises pressure-feed units (25 a, 25 c) for pressure-feeding the heat medium in the heat medium circuit, The second circuit is constituted by the circuit switching unit, the pumping unit, and a pipe for forming the heat medium.
  5. 5. A temperature regulating device according to claim 1, wherein, The third circuit is formed inside the battery.
  6. 6. A temperature regulating device as defined in claim 5, wherein, The circuit switching part is arranged inside the battery, The battery includes a battery pack (24 a) having a plurality of battery cells, a heat exchanger (24 b) that exchanges heat between the battery pack and the heat medium, a first flow path (24 c) that guides the heat medium flowing out of the circuit switching unit to the heat exchanger, and a second flow path (24 d) that guides the heat medium flowing out of the heat exchanger to the circuit switching unit.
  7. 7. A temperature regulating device as defined in claim 5, wherein, The battery includes a battery pack (24 a) having a plurality of battery cells, a heat exchanger (24 b) that exchanges heat between the battery pack and the heat medium, a first flow path (24 c) that guides the heat medium flowing out of the circuit switching unit to the heat exchanger, a second flow path (24 d) that guides the heat medium flowing out of the heat exchanger to the circuit switching unit, a battery bypass flow path (24 e) that guides the heat medium flowing in the second flow path to the first flow path while bypassing the circuit switching unit, and a check valve (24 f) provided in the battery bypass flow path that can flow the heat medium from the second flow path side to the first flow path side via the battery bypass flow path and prohibit the heat medium from flowing from the first flow path side to the second flow path side via the battery bypass flow path.
  8. 8. A temperature regulating device according to any one of claims 1 to 7, The circuit switching unit forms the third circuit when the second circuit is formed.

Description

Temperature adjusting device Cross reference to related applications The present application is based on the application of Japanese patent application No. 2023-168643, applied at 28, 9, 2023, incorporated herein by reference. Technical Field The present disclosure relates to temperature regulating devices. Background Conventionally, a temperature control device is known that includes a heat medium circuit through which a heat medium flows, a motor, a battery that supplies electric power to the motor, a cooler that extracts heat from the heat medium, a radiator that cools the heat medium, and a plurality of switching units that switch the heat medium circuit (see, for example, patent document 1). The heat medium circuit has a first loop through which the heat medium passes through the motor and the cooler, a second loop through which the heat medium circulates in the battery, and a third loop through which the heat medium passes through the motor, the cooler, and the battery. The heat medium circuit further includes a bypass flow path bypassing the radiator and a bypass flow path bypassing the radiator. The temperature control device described in patent document 1 switches the heat medium circuit in which the heat medium flows in the first, second, and third circuits by a plurality of valves. In addition, the temperature adjustment device switches whether the heat medium passes through the cooler and the radiator using a plurality of valves. For example, the temperature control device is switched between a first mode in which the heat medium flows in the first loop and a second mode in which the heat medium flows in the third loop independently by the first switching unit, which is one of the plurality of switching units. In addition, the temperature control device opens and closes a bypass flow path bypassing the cooler in the second mode by an adjustment valve that is one of the plurality of switching units. The temperature control device switches whether or not the heat medium passes through the radiator in the first mode and the second mode, respectively, by using a third switching unit that is one of the plurality of switching units. In this way, the temperature control device described in patent document 1 is configured to switch the heat medium circuit by a configuration having three circuit switching units for switching the heat medium circuit, and to guide the heat medium to various constituent devices. Prior art literature Patent literature Patent document 1 International publication No. 2022/185561 Disclosure of Invention However, in the temperature adjustment device, the more the number of circuit switching parts for switching the heat medium circuit is, the more complicated the heat medium circuit is. However, the complexity of the heat medium circuit is a factor of increasing the size of the housing of the temperature control device, increasing heat loss when the heat medium flows in the heat medium circuit, and the like. The purpose of the present disclosure is to provide a temperature adjustment device that can reduce the number of circuit switching units. According to one aspect of the present disclosure, a temperature control device for a vehicle having an electric drive unit that outputs power for traveling, a battery that supplies electric power to the electric drive unit, and an air conditioning device for a vehicle including a refrigeration cycle in which a refrigerant circulates, includes: A heat medium circuit for circulating a heat medium that exchanges heat with the electric drive unit and the battery; a heat exchange unit provided in the heat medium circuit for exchanging heat between the heat medium heat-exchanged in the electric drive unit and the battery and the refrigerant, and A circuit switching unit connected to the electric drive unit, the battery, and the heat exchange unit and disposed in the heat medium circuit for switching the heat medium circuit, The circuit switching unit switches the heat medium circuit to form a first circuit for guiding the heat medium heat-exchanged in the electric drive unit to the battery, a second circuit for guiding the heat medium heat-exchanged in the electric drive unit to the heat exchange unit, and a third circuit for returning the heat medium heat-exchanged in the battery to the battery while bypassing the electric drive unit and the heat exchange unit. In this way, according to the configuration in which the heat medium circuit is switched to the first circuit, the second circuit, and the third circuit by the single circuit switching portion, the number of circuit switching portions in the temperature adjustment device can be reduced. Therefore, the structure of the heat medium circuit of the heat medium cycle can be simplified. The bracketed reference numerals for each component and the like denote examples of correspondence between the component and the like and specific components and the like described in the embodiments described