DE-102017126879-B4 - Heating, ventilation and air conditioning system for a vehicle

DE102017126879B4DE 102017126879 B4DE102017126879 B4DE 102017126879B4DE-102017126879-B4

Abstract

Heating, ventilation and air conditioning system for a vehicle, comprising: a first coolant line (10) which passes through a radiator (100) and of which a first end section is connected to a first valve (310) and a second end section is connected to a second valve (330), a second coolant line (30), of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330), a first coolant exchange line (50) which passes through a first heat exchanger (610) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330), a second coolant exchange line (70) which passes through a second heat exchanger (630) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330), and a refrigerant line (90) comprising the first heat exchanger (610), the second heat exchanger (630) and a compressor (800) in which a refrigerant circulates, wherein the first heat exchanger (610) is a hot heat exchanger and the second heat exchanger (630) is a cold heat exchanger, characterized in that the second coolant line (30) passes through an interior air conditioning core (400) and a high-voltage battery core (500), The heating, ventilation and air conditioning system further comprises a control device (900) configured to control the first valve (310) and the second valve (330) to selectively connect the first coolant line (10) or the second coolant line (30) to the first coolant exchange line (50) or the second coolant exchange line (70), the first coolant line (10) further comprises an electrical component core (200), wherein the coolant, which has heat-exchanged through the radiator (100), cools the first heat exchanger (610) or the second heat exchanger, the electrical component core (200), and In a cooling mode, the control device (900) is set up not to operate the compressor (800), and the control device (900) controls the first valve (310) and the second valve (330) to connect the first coolant line (10) to the first coolant exchange line (50) and to connect the second coolant line (30) to the second coolant exchange line (70), so that the electrical component core (300) is cooled, an interior volume is air-conditioned, and the high-voltage battery core (500) is selectively cooled.

Inventors

Man Ju Oh
Sang Shin Lee
Jae Woo Park
So Yoon PARK
Jae Woong Kim
So La CHUNG

Assignees

HYUNDAI MOTOR COMPANY
KIA MOTORS CORPORATION

Dates

Publication Date: 20260513
Application Date: 20171115
Priority Date: 20170530

Claims (8)

Heating, ventilation and air conditioning system for a vehicle, comprising: a first coolant line (10) passing through a radiator (100) and of which a first end section is connected to a first valve (310) and a second end section is connected to a second valve (330); a second coolant line (30) of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a first coolant exchange line (50) passing through a first heat exchanger (610) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a second coolant exchange line (70) passing through a second heat exchanger (630) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); and a refrigerant line (90) which The system comprises the first heat exchanger (610), the second heat exchanger (630), and a compressor (800), in which a refrigerant circulates, wherein the first heat exchanger (610) is a hot heat exchanger and the second heat exchanger (630) is a cold heat exchanger, characterized in that the second refrigerant line (30) passes through an interior air conditioning core (400) and a high-voltage battery core (500), the heating, ventilation, and air conditioning system further comprising a control device (900) configured to control the first valve (310) and the second valve (330) to selectively connect the first refrigerant line (10) or the second refrigerant line (30) to the first refrigerant exchange line. to connect the first coolant line (50) or the second coolant exchange line (70), the first coolant line (10) further comprising an electrical component core (200), wherein the coolant, which has heat exchanged through the radiator (100), cools the first heat exchanger (610) or the second heat exchanger, the electrical component core (200), and in a cooling mode, the control device (900) is configured not to operate the compressor (800), and the control device (900) controls the first valve (310) and the second valve (330) to connect the first coolant line (10) to the first coolant exchange line (50) and to connect the second coolant line (30) to the second coolant exchange line (70), such that the electrical component core (300) is cooled, an interior volume is air-conditioned, and the high-voltage battery core (500) is selectively cooled becomes.
Heating, ventilation and air conditioning system for a vehicle, comprising: a first coolant line (10) passing through a radiator (100) and of which a first end section is connected to a first valve (310) and a second end section is connected to a second valve (330); a second coolant line (30) of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a first coolant exchange line (50) passing through a first heat exchanger (610) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a second coolant exchange line (70) passing through a second heat exchanger (630) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); and a refrigerant line (90) which The system comprises the first heat exchanger (610), the second heat exchanger (630), and a compressor (800), in which a refrigerant circulates, wherein the first heat exchanger (610) is a hot heat exchanger and the second heat exchanger (630) is a cold heat exchanger, characterized in that an interior air conditioning core (400) is connected in parallel to a high-voltage battery core (500) on the second refrigerant line (30), the heating, ventilation, and air conditioning system further comprises a control device (900) configured to control the first valve (310) and the second valve (330) to selectively connect the first refrigerant line (10) or the second refrigerant line (30) to the first refrigerant exchange line (50) or the second refrigerant exchange line (70), the first refrigerant line (10) further comprises an electrical component core (200), wherein the coolant, which has heat exchanged through the radiator (100), the first heat exchanger (610) or the second heat exchanger, cools the electrical component core (200), and in a cooling mode, the control device (900) is set up not to operate the compressor (800), and the control device (900) controls the first valve (310) and the second valve (330) to connect the first coolant line (10) to the first coolant exchange line (50) and to connect the second coolant line (30) to the second coolant exchange line (70), so that the electrical component core (300) is cooled, an interior volume is air-conditioned, and the high-voltage battery core (500) is selectively cooled.
Heating, ventilation and air conditioning system for a vehicle, comprising: a first coolant line (10) passing through a radiator (100) and of which a first end section is connected to a first valve (310) and a second end section is connected to a second valve (330); a second coolant line (30) of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a first coolant exchange line (50) passing through a first heat exchanger (610) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a second coolant exchange line (70) passing through a second heat exchanger (630) and of which a first end section is connected to the first valve (310) and a second end section is connected to the second valve (330); a refrigerant line (90) which The system comprises a first heat exchanger (610), a second heat exchanger (630), and a compressor (800), in which a refrigerant circulates, wherein the first heat exchanger (610) is a hot heat exchanger and the second heat exchanger (630) is a cold heat exchanger, characterized in that the second refrigerant line (30) passes through an interior air conditioning core (400) and a high-voltage battery core (500), the heating, ventilation, and air conditioning system further comprising a control device (900) configured to control the first valve (310) and the second valve (330) to selectively control the to connect the first coolant line (10) or the second coolant line (30) with the first coolant exchange line (50) or the second coolant exchange line (70), the first coolant line (10) further comprising an electrical component core (200), wherein the coolant, which has heat exchanged through the radiator (100), cools the first heat exchanger (610) or the second heat exchanger, the electrical component core (200), and in a warm mode, the control device (900) is configured not to operate the compressor (800), and the control device (900) controls the first valve (310) and the second valve (330) to connect the first coolant line (10) with the second coolant exchange line (70) and to connect the second coolant line (30) with the first coolant exchange line (50), so that the electrical component core (200) is cooled, an internal volume The high-voltage battery core is heated and selectively cooled.
System according to one of the Claims 1 until 3 , wherein the first valve (310) and the second valve (330) are four-way valves and are controlled by the control device to be open or closed.
System according to Claim 1 or 3 or according to Claim 4 in its reference to Claim 1 or 3 , wherein the interior climate control core (400) is located at a point upstream of the high-voltage battery core (500).
System according to one of the Claims 1 or 3 or according to Claim 4 in its reference to Claim 1 or 3 , wherein the interior air conditioning core (400) is arranged at a location upstream of the high-voltage battery core (500), a bypass line (80) is arranged between the high-voltage battery core (500) and the interior air conditioning core (400), wherein coolant can bypass the high-voltage battery core (500), and the bypass line (80) has a bypass valve (350) wherein the coolant is selectively supplied to the high-voltage battery core (500) side.
System according to one of the Claims 1 until 6 , wherein the first coolant line (10) has a first pump (710) and the second coolant line (30) has a second pump (730), wherein the first pump (710) and the second pump (730) are driven or stopped under the control of the control device (900).
System according to one of the Claims 1 until 7 , wherein the compressor (800) is located upstream of the first heat exchanger (610) and the first heat exchanger (610) is a hot heat exchanger.

Description

Background of the invention Field of invention The present invention relates to a heating, ventilation and air conditioning (HVAC) system for a vehicle (e.g. a motor vehicle) and in particular an HVAC system for a vehicle which is configured to extend/increase a driving distance by efficiently managing the energy required for interior air conditioning and cooling and heating of the battery. Description of related technology More recently, electric vehicles have become a societal issue, particularly regarding the implementation of environmentally friendly technology and the solution to the problem of energy waste. An electric vehicle is powered by an electric motor, which draws electricity from a battery to deliver power. Therefore, electric vehicles have gained prominence due to their advantages: they emit no carbon dioxide, operate at very low noise levels, and have an electric motor that is more energy-efficient than a combustion engine. A key technology for realizing such an electric vehicle is that related to the battery module. Recently, research has been actively pursued in the areas of weight reduction, miniaturization, and short charging times for batteries. The battery module can be used in an optimal temperature environment to maintain optimal performance and ensure a long service life. However, operating a battery module in an optimal temperature environment is challenging due to heat generated during operation and fluctuations in the ambient temperature. Furthermore, unlike an internal combustion engine, an electric vehicle does not have a waste heat source such as that produced by combustion in a separate combustion engine. Therefore, the electric vehicle uses an electric heating device for interior heating in winter, which can be warmed up. This device employs a separate electric coolant-type heater to improve battery charging/discharging performance in cold weather. In other words, to maintain an optimal temperature environment for the battery module, an electric vehicle operates a separate cooling and heating system for controlling (e.g., regulating) the battery module temperature from a separate cooling and heating system for the vehicle's climate control. In other words, an electric vehicle uses two independent cooling and heating systems: one for interior cooling and heating, and a second for controlling the battery module temperature. However, an electric vehicle operating according to the above method is unable to manage energy efficiently, resulting in a short driving range and therefore inability to travel long distances. The electric vehicle's driving range is reduced by 30% or more during cooling in the summer and by 40% or more during heating in the winter. Therefore, an electric vehicle has a significant interior heating problem in winter, which does not occur with an internal combustion engine. An electric vehicle using a high-capacity PCT (positive temperature coefficient) heater to address the interior heating problem in winter is problematic in that it has a reduced driving range, excessive production costs, and excessive weight due to the use of a heat pump. From DE 601 02 185 T2, a heating, ventilation, and air conditioning system for a vehicle is known according to the preambles of claims 1, 2, and 3. From US 5,289,698 A, a heating, ventilation, and air conditioning system for a vehicle is known in which a coolant line passes through an interior air conditioning core, a high-voltage battery core, and an electrical component core. From DE 11 2015 000 552 T5, a heating, ventilation, and air conditioning system for a vehicle is known in which an interior air conditioning core is connected in parallel to a high-voltage battery core via a coolant line. From DE 10 2009 060 860 A1 it is known to provide a bypass line and a bypass valve arranged in parallel to the battery in a cooling circuit in order to control the cooling of the battery. The information disclosed in this background-of-invention section is provided only to facilitate understanding of the general background of the invention and should not be construed as an admission or any form of suggestion that this information constitutes prior art already known to the person skilled in the art. Explanation of the invention The object of the present invention is to solve the problems described above, and various aspects of the present invention are aimed at creating a heating, ventilation and air conditioning (HVAC) system for a vehicle that can avoid a reduction in driving range, even when the electric vehicle uses a high-capacity PTC heating device, and that can avoid excessive cost and excessive weight. This problem is solved by a heating, ventilation and air conditioning system for a vehicle according to claim 1, 2 or 3. Advantageous embodiments are the subject of the dependent claims. To achieve the above aspects, an HVAC system for a vehicle according to the present invention comprises a first coolant line passing through