KR102093308B1 - Cooling Module for battery module and Refrigerant cycling device having the same - Google Patents

Cooling Module for battery module and Refrigerant cycling device having the same Download PDF

Info

Publication number
KR102093308B1
KR102093308B1 KR1020170022298A KR20170022298A KR102093308B1 KR 102093308 B1 KR102093308 B1 KR 102093308B1 KR 1020170022298 A KR1020170022298 A KR 1020170022298A KR 20170022298 A KR20170022298 A KR 20170022298A KR 102093308 B1 KR102093308 B1 KR 102093308B1
Authority
KR
South Korea
Prior art keywords
refrigerant
space
battery module
gas
heat exchanger
Prior art date
Application number
KR1020170022298A
Other languages
Korean (ko)
Other versions
KR20180096081A (en
Inventor
이요한
김봉준
김세현
김재영
정민우
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020170022298A priority Critical patent/KR102093308B1/en
Publication of KR20180096081A publication Critical patent/KR20180096081A/en
Application granted granted Critical
Publication of KR102093308B1 publication Critical patent/KR102093308B1/en

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • Y02E60/12
    • Y02T10/7005

Abstract

In the present embodiment, a battery module heat exchanger that contacts a battery module and dissipates a battery module, comprising: a refrigerant inflow pipe; A plurality of refrigerant tubes having at least one channel formed thereon; A gas-liquid separation inlet header in which a first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inflow pipe and a second space in which the channel communicates are partitioned, and the liquid refrigerant in the first space flows into the second space; An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel; A refrigerant outlet pipe connected to the outlet header; Including a bypass tube having one end in communication with the upper end of the first space and the other end connected to the outlet header or the refrigerant outlet pipe, the refrigerant can be more evenly distributed among the plurality of refrigerant tubes, and the multiple refrigerant tubes evenly distribute the battery module. It can dissipate heat and has the advantage of minimizing the temperature deviation of the battery module.

Description

{Cooling Module for battery module and Refrigerant cycling device having the same}

The present invention relates to a battery module heat exchanger and a refrigeration cycle device having the same, and more particularly, to a battery module heat exchanger having a channel through which a refrigerant for cooling the battery module passes and a refrigeration cycle device having the same.

The vehicle may be provided with a battery for supplying electricity to the electric motor, a motor controller for controlling the electric motor, and the like.

The battery installed in the vehicle may be charged from a renewable power source or charger, and may supply power to the electric motor when the vehicle is driving.

The performance of a battery can be largely determined according to its temperature, and the temperature rises during charging and discharging.

As the battery continues to be used, electrolyte decomposition occurs, so that the performance of the battery deteriorates and the service life is gradually shortened.

The battery may include a plurality of battery modules, and the plurality of battery modules is preferably managed to minimize the temperature difference between each other.

The vehicle may be equipped with a refrigeration cycle device that cools the battery module to prevent overheating of the battery module and maintain the performance of the battery module.

The refrigeration cycle device may include a battery module heat exchanger for cooling the battery module using a refrigerant, and the refrigerant may absorb heat of the battery module while passing through the battery module heat exchanger.

The heat exchanger of the battery module may include a plurality of refrigerant tubes, and the two-phase refrigerants of the liquid refrigerant and the gaseous refrigerant may be distributed to the plurality of refrigerant tubes to absorb heat of the battery module.

KR 10-1263245 B1 (announced May 10, 2013)

An object of the present invention is to provide a battery module heat exchanger capable of dissipating a battery module as evenly as possible and a refrigeration cycle device having the same.

Another object of the present invention is to distribute the refrigerant evenly among the plurality of refrigerant tubes, thereby minimizing refrigerant imbalance between the plurality of refrigerant tubes, and the battery module heat exchanger capable of evenly cooling the entire battery module and the same It is to provide a refrigeration cycle device having.

In this embodiment, the battery module heat exchanger is in contact with the battery module to dissipate the battery module, the refrigerant inlet pipe; A plurality of refrigerant tubes having at least one channel formed thereon; A gas-liquid separation inlet header in which a first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inflow pipe and a second space in which the channel communicates are partitioned, and the liquid refrigerant in the first space flows into the second space; An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel; And a refrigerant outlet pipe connected to the outlet header. In addition, the battery module heat exchanger may include a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe.

The refrigeration cycle device having a battery module heat exchanger of the present embodiment includes a compressor connected to a compressor suction passage and a compressor discharge passage; A condenser connected to the compressor discharge passage and connected to the condenser outlet passage; A first expansion mechanism connected to a condenser outlet passage; A battery module heat exchanger connected to the first expansion mechanism and a refrigerant inlet pipe, a channel for cooling the battery module, and connected to the refrigerant outlet pipe; An evaporator connected to the compressor suction passage; The first flow path connected to the refrigerant discharge pipe, the connection flow path through which the refrigerant passing through the first flow path is guided, and the refrigerant flowing in the connection flow path exchanges heat with the refrigerant passing through the first flow path and is connected to the evaporator and the evaporator connection flow path. A supercooled heat exchanger having a flow path; It may include a second expansion mechanism installed in the connecting passage.

One end of the bypass tube may be higher than multiple refrigerant tubes.

The bypass tube may be bent at least once between one end and the other end.

A bypass flow passage larger than the channel and through which the gas phase refrigerant in the first space passes may be formed inside the bypass tube.

The length of the bypass tube may be longer than the length of the refrigerant tube.

The gas-liquid separation inlet header includes a barrier that partitions the first space and the second space, and at least one through hole for guiding the liquid refrigerant in the first space to the second space may be formed below the barrier.

The through hole may be inconsistent with the channel in the horizontal direction.

The gas-liquid separation inlet header includes a housing having an opening formed on one surface and a space formed therein; It can be formed by a cover covering the opening.

A barrier may be formed in at least one of the housing and the cover to partition the interior of the space into a first space in which the liquid refrigerant and the gas phase refrigerant are separated, and a second space in which the channel communicates.

Also, a through hole through which the liquid refrigerant in the first space flows into the second space may be formed in the lower portion of the barrier.

The bypass tube may be connected to the upper portion of the housing in communication with the first space.

A plurality of through holes may be formed in the barrier. The plurality of through holes may be spaced apart from the barrier in a direction perpendicular to the longitudinal direction of the plurality of refrigerant tubes.

The gas-liquid separation inlet header includes a gas-liquid separation body having a first space therein; A second space is formed inside and may include an inlet header body contacting the gas-liquid separation body.

A first through hole through which the liquid refrigerant is discharged may be formed under the sidewall of the gas-liquid separation body.

A second through hole through which the liquid refrigerant flowing into the first through hole flows into the inside of the inlet header body may be formed under the side wall of the inlet header body to face the first through hole.

The bypass tube may be connected to the gas-liquid separation body in communication with the first space.

Each of the first through-hole and the second through-hole may be formed in plural. Each of the plurality of first through holes and the plurality of second through holes may be formed at equal intervals.

The gas-liquid separation inlet header and outlet header may be horizontally disposed.

Between the gas-liquid separation inlet header and the outlet header, it is mounted on a plurality of refrigerant tubes, and may further include a cooling plate on which a battery module is mounted.

According to an embodiment of the present invention, the two-phase refrigerant of the gas phase refrigerant and the liquid refrigerant can be more evenly distributed to the plurality of refrigerant tubes than when the refrigerant is distributed to the plurality of refrigerant tubes, and the plurality of refrigerant tubes distribute the battery module. It can dissipate evenly and has the advantage of minimizing the temperature deviation of the battery module.

In addition, since the bypass tube does not interfere with the battery module, there is an advantage that damage to the bypass tube or battery module can be minimized.

In addition, the volume of the gas-liquid separation inlet header can be minimized, and the battery module heat exchanger can be compacted.

1 is a plan view showing a battery module heat exchanger according to an embodiment of the present invention,
Figure 2 is a cross-sectional view taken along line X-X 'shown in Figure 1,
Figure 3 is a cross-sectional view taken along line Y-Y 'shown in Figure 1,
4 is a cross-sectional view taken along line Z-Z 'shown in FIG. 1,
5 is a plan view showing a battery module heat exchanger according to another embodiment of the invention,
Figure 6 is a cross-sectional view taken along line X-X 'shown in Figure 1,
7 is a diagram illustrating a refrigerant flow of a refrigeration cycle device to which a battery module heat exchanger according to an embodiment of the present invention is applied,
8 is a control block diagram of a refrigeration cycle device to which a battery module heat exchanger according to an embodiment of the present invention is applied,
9 is a Ph diagram of a refrigeration cycle device according to an embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a plan view showing a battery module heat exchanger according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line X-X 'shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line Y-Y' shown in FIG. 1. 4 is a cross-sectional view taken along line Z-Z 'shown in FIG. 1.

The battery module heat exchanger 4 of this embodiment may contact the battery module C to dissipate the battery module C.

The battery module heat exchanger 4 includes a gas-liquid separation inlet header 110, a refrigerant inlet pipe 120, a plurality of refrigerant tubes 140 having at least one channel 130, an outlet header 150, A refrigerant outlet pipe 160 and a bypass tube 170 may be included.

The gas-liquid separation inlet header 110 may be connected to the refrigerant inflow pipe 120 and may separate the refrigerant flowing in the refrigerant inflow pipe 120 into a gas phase refrigerant and a liquid refrigerant.

The gas-liquid inlet header 110 may be horizontally disposed. The gas-liquid separation inlet header 110 may be disposed long in the horizontal direction. Among the refrigerants introduced into the gas-liquid separation inlet header 110 from the refrigerant inlet pipe 120, the liquid refrigerant L may be located inside the lower portion of the gas-liquid separation inlet header 110, and the gaseous refrigerant separated from the liquid refrigerant (N ) May be located on the inner upper portion of the gas-liquid inlet header 110.

The gas-liquid separation inlet header 110 may be connected to a plurality of refrigerant tubes 140, and the gas-phase refrigerant (G) and separated liquid refrigerant (L) from the gas-liquid separation inlet header 110 to the plurality of refrigerant tubes 140 Can be guided.

As shown in FIG. 1, the gas-liquid separation inlet header 110 may be spaced apart from the outlet header 150 without directly contacting the outlet header 150.

The gas-liquid separation inlet header 110 may communicate with the outlet header 150 by a plurality of refrigerant tubes 140.

The liquid refrigerant of the gas-liquid separation inlet header 110 may flow through the plurality of refrigerant tubes 140 and then to the outlet header 150.

The gas-liquid separation inlet header 110 may include a plurality of walls 110A, 110B, 110C, 110D, 110E, and 110F forming a space in which the refrigerant flows.

The gas-liquid separation inlet header 110 is divided into a space (S1) in which the gaseous refrigerant (N) and a liquid refrigerant (L) are separated, and a space (S2) for guiding the liquid refrigerant (L) to the plurality of refrigerant tubes (140). Can be formed.

The gas-liquid separation inlet header 110 may be formed by partitioning the first space S1 and the second space S2.

The first space S1 may be a space in which the liquid refrigerant L and the gas phase refrigerant N are separated among the refrigerants moved in the refrigerant inflow pipe 120.

In addition, the second space S2 may be a space in which the channel 130 communicates.

A barrier 111 partitioning the first space S1 and the second space S2 may be formed inside the gas-liquid separation inlet header 110.

The barrier 111 may be an inner wall formed inside the gas-liquid separation inlet header 110. The barrier 111 may be a vertical partition wall positioned vertically inside the gas-liquid separation inlet header 110.

The barrier 111 may be disposed long in a direction orthogonal to the longitudinal direction W of the refrigerant tube 140.

When the refrigerant tube 140 is disposed long in the left-right direction, the barrier 111 may be disposed long in the front-rear direction inside the gas-liquid separation inlet header 110, and the left space inside the gas-liquid separation inlet header 110 And the right space may be partitioned by the barrier 111.

In this case, in one of the left space and the right space, a space in which the end of the refrigerant tube 140 is inserted may be a space for distributing the liquid refrigerant to the refrigerant tube 140, and the other space is a refrigerant inflow pipe. It may be a space in which the liquid refrigerant (L) and the gas phase refrigerant (N) are separated from the refrigerant introduced into the 120.

When the refrigerant tube 140 is disposed long in the front-rear direction, the barrier 111 may be arranged long in the left-right direction inside the gas-liquid separation inlet header 110, and the front side of the inside of the gas-liquid separation inlet header 110 The space and the rear side space may be partitioned by the barrier 111.

In this case, one space of the front side space and the rear side space may be a space in which an end of the refrigerant tube 140 is inserted, and a space in which the liquid refrigerant is distributed to the refrigerant tube 140, and the other space is a refrigerant. It may be a space in which the liquid refrigerant (L) and the gas phase refrigerant (N) are separated from the refrigerant introduced into the inlet pipe 120.

The barrier 111 may face one side wall of the gas-liquid separation inlet header 110 and the other side may face the other side wall of the gas-liquid separation inlet header 110.

The gas-liquid separation inlet header 110 may include a pair of side walls 110A, 110B, a lower wall 110C, and an upper wall 110D spaced horizontally with the barrier 111 interposed therebetween. The gas-liquid separation inlet header 110 may further include a front side wall 110E and a rear side wall 110F.

The pair of side walls 110A and 110B may include a refrigerant tube connecting wall 110A to which a plurality of refrigerant tubes 140 are connected.

The pair of side walls 110A and 110B may further include a non-contact wall 110B located on the opposite side of the refrigerant tube connecting wall 110A and not contacting the plurality of refrigerant tubes 140.

The first space S1 may be formed between the non-contact wall 110B and one surface of the barrier 111. In addition, the second space S2 may be formed between the other surface of the barrier 111 and the refrigerant tube connecting wall 110A.

The first space S1 and the second space S2 may be communicated by the through hole 112, and the liquid refrigerant L of the first space S1 passes through the through hole 111 to pass through the second space S2. ).

The through hole 111 may be formed to penetrate the barrier 111.

Liquid refrigerant (L) of the two-phase refrigerant introduced into the first space (S1) through the refrigerant inlet pipe 120 may be contained in the lower portion of the first space (S1), the gas phase refrigerant (N) of the two-phase refrigerant It may flow in the upper portion of the first space (S1).

The through hole 112 is preferably formed at a height that minimizes the flow of the gas phase refrigerant (N) into the second space (S2) among the gas phase refrigerant (N) and the liquid refrigerant (L) in the first space (S1). Do.

In addition, the through hole 112 may be formed at a height at which the liquid refrigerant in the first space S1 can flow to the second space S2.

The through hole 112 may be formed at a height closer to the lower end of the upper and lower ends of the vapor refrigerant inlet header 110. The through hole 112 may be formed closer to the lower end of the barrier 111 between the lower and upper ends of the barrier 111. The distance T1 between the through hole 112 and the lower end of the barrier 111 may be shorter than the distance T2 between the through hole 112 and the upper end of the barrier 111.

The through hole 112 may be formed in a direction parallel to the longitudinal direction W of the plurality of refrigerant tubes 140.

A refrigerant inlet pipe connection part 113 to which the refrigerant inlet pipe 120 is connected may be formed in the gas-liquid separation inlet header 110.

The refrigerant inlet pipe connection part 113 may be configured with a through hole formed so that an end of the refrigerant inlet pipe 120 is inserted. The refrigerant inlet pipe connection part 113 may be configured as a cylinder through which the end of the refrigerant inlet pipe 120 is interpolated or extrapolated to the gas-liquid separation inlet header 110.

The refrigerant inlet pipe connection part 113 may be formed higher than the through hole 112. The refrigerant inlet pipe connection part 113 may be formed at a height closer to the upper end of the upper and lower ends of the gas phase refrigerant inlet header 110.

Meanwhile, a bypass tube connecting portion 114 to which the bypass tube 170 is connected may be formed in the gas-liquid separation inlet header 110.

The bypass tube connection part 114 may be configured with a through hole formed so that an end of the bypass tube 170 is inserted. The bypass tube connection portion 114 may be configured as a tube portion through which the end portion of the bypass tube 170 is interpolated or extrapolated to the gas-liquid separation inlet header 110.

The bypass tube connection part 114 may be formed higher than the through hole 112. The bypass tube connection part 114 may be formed at a height closer to the upper end of the upper and lower ends of the gas phase refrigerant inlet header 110.

When the formation height of the bypass tube connection part 114 is too low, the liquid refrigerant in the first space S1 may flow out into the bypass tube 170, in which case the heat dissipation performance of the battery module C may be low. have. The formation position of the bypass tube connection portion 114 may be an upper portion of the non-contact wall 110B, an upper portion of the front side wall 110E, an upper portion of the rear side wall 110F, or an upper side wall 110D.

The bypass tube connection part 114 may be formed higher than the refrigerant inflow tube connection part 113. That is, the height between the lower end of the gas-liquid separation inlet header 110 and the bypass tube connection portion 114 may be higher than the height between the lower end of the gas-liquid separation inlet header 110 and the refrigerant inflow pipe connection portion 113.

The bypass tube connection part 114 may be formed in a different direction from the refrigerant inflow tube connection part 113.

The bypass tube connection part 114 and the refrigerant inflow tube connection part 113 may be formed in an orthogonal direction.

When the bypass tube connection part 114 is formed in the front-rear direction, the refrigerant inflow tube connection part 113 may be formed in a left-right direction or a vertical direction. When the bypass tube connection part 114 is formed in the left and right directions, the refrigerant inflow tube connection part 113 may be formed in a front-rear direction or a vertical direction. When the bypass tube connection part 114 is formed in the vertical direction, the refrigerant inflow tube connection part 113 may be formed in a front-rear direction or a left-right direction.

The gas-liquid separation inlet header 110 may be formed of a combination of a plurality of members.

The gas-liquid separation inlet header 110 includes a housing 115 having an opening formed on one surface and a space formed therein; It may be formed by a cover 116 that closes the opening.

The housing 115 may include a refrigerant tube connecting wall 110A, a non-contacting wall 110B, and a lower wall 110C.

The cover 116 may include a lower wall 110D.

The front side wall 110E may be formed in one of the housing 115 and the cover 116.

And, the rear side wall 110F may be formed on one of the housing 115 and the cover 116.

At least one of the housing 115 and the cover 116 includes a first space S1 in which the liquid refrigerant L and the gaseous refrigerant N are separated inside the space, and a second space in which the channel 130 communicates ( A barrier 111 partitioned by S2) may be formed. The barrier 111 may be formed long in a direction orthogonal to the longitudinal direction of the channel 130.

The barrier 111 may divide the space of the housing 115 into a first space S1 in which the channel 130 is not in communication and a second space S2 in which the channel 130 is in communication.

Here, the first space S1 in which the channel 130 is not in communication may be a gas-liquid separation space separating the liquid refrigerant (L) and the gas phase refrigerant (N). In addition, the second space S2 in which the channel 130 communicates may be a liquid refrigerant distribution space for distributing the liquid refrigerant L introduced through the through hole 112 to a plurality of channels C.

A through hole 112 through which the liquid refrigerant in the first space S1 flows into the second space S2 may be formed under the barrier 111.

The number of through holes 112 may be less than the number of the plurality of refrigerant tubes 140. The number of through holes 112 may be the same as the number of refrigerant inflow pipes 120 or greater than the number of refrigerant inflow pipes 120.

For example, when the refrigerant inlet pipe 120 is one and the refrigerant tube 140 is 4 to 6, the number of through holes 112 may be 1 to 3.

A plurality of through holes 112 may be formed in the barrier 111. The plurality of through holes 112 may be spaced apart from the barrier 111 in a direction orthogonal to the longitudinal direction W of the plurality of refrigerant tubes 140. The plurality of through holes 112 may be spaced apart from each other in the horizontal direction.

The plurality of through holes 112 may be spaced apart from each other in the longitudinal direction R of the barrier 111.

The plurality of through holes 112 may be formed to face the refrigerant tube connecting wall 110A.

At least one of the plurality of through holes 112 may be formed so as not to face the channel 130 of the refrigerant tube 140.

Each of the plurality of through holes 112 may be formed at a position that does not face the channel 130 of the refrigerant tube 140 in the horizontal direction.

When all of the plurality of through holes 112 do not face each other in the horizontal direction with the channel 130, the liquid refrigerant passing through the through holes 112 may spread while the flow direction in the second space S2 is bent at least once. , It can be evenly distributed to a plurality of refrigerant tubes 140.

When the height of the through hole 112 is lower than the height of the channel (C), the refrigerant introduced into the second space (S2) through the through hole 112 is the longitudinal direction (W) of the channel (C) and the gas-liquid separation inlet header ( After the flow direction is switched in the direction (U) orthogonal to each of the longitudinal direction (R) of 110, it may be introduced into the channel (C).

A slit 110G in which an end of the refrigerant tube 140 is inserted may be formed in the refrigerant tube connecting wall 110A. The number of slit 110G refrigerant tubes 140 may be formed. The slit 110G may be formed not to coincide with the through hole 112 in the horizontal direction.

The refrigerant inlet pipe 120 may be connected to the first space S1 of the gas-liquid separation inlet header 110.

The refrigerant inlet pipe 120 may be connected to the refrigerant tube connecting wall 110A and the lower wall 110C to which a plurality of refrigerant tubes 140 of the gas-liquid separation inlet header 110 are connected.

The refrigerant inlet pipe 120 may be connected to at least one of the non-contact wall 110B, the upper wall 110D, the front side wall 110E, and the rear side wall 110F.

The refrigerant inlet pipe 120 may be connected to the gas-liquid separation inlet header 110 to be located on the opposite side of the refrigerant tube 140, and in this case, the refrigerant inlet pipe 120 may be connected to the non-contact wall 110B.

The refrigerant inlet pipe 120 may be connected to the gas-liquid separation inlet header 110 in a direction orthogonal to the longitudinal direction (W) of the refrigerant tube 140 (R or U), in this case, the refrigerant inlet pipe 120 is It may be connected to at least one of the front side wall 110E, the rear side wall 110F, and the upper side wall 110D.

One end of the channel 130 may be in communication with the second space S2, and the other end may be in communication with the third space S3 of the exit header 150.

The channel 130 may be formed long in the longitudinal direction W of the refrigerant tube 140. The channel 130 may be orthogonal to the longitudinal direction R of the gas-liquid separation inlet header 110 and may be orthogonal to the longitudinal direction R of the outlet header 150.

A plurality of channels 130 may be formed in each of the refrigerant tubes 140, and the plurality of channels 130 may be spaced apart from each other in the horizontal direction. The plurality of channels 130 may be spaced apart from each other in the longitudinal direction R and the parallel direction R of the gas-liquid separation inlet header 110.

The plurality of refrigerant tubes 140 may absorb heat of the battery module C through a portion located between the gas-liquid separation inlet header 110 and the outlet header 150.

One end of each of the plurality of refrigerant tubes 140 may be interpolated into the second space S2, and the other end of each of the plurality of refrigerant tubes 140 may be interpolated into the third space S3 of the outlet header 150. have.

Inside the outlet header 150, a third space S3 through which the refrigerant has passed through the plurality of refrigerant tubes 140 may be formed.

The outlet header 150 may be disposed horizontally. The outlet header 150 may be disposed long in the horizontal direction as the gas-liquid separation inlet header 110.

The outlet header 150 may be spaced apart from the gas-liquid separation inlet header 110 in a horizontal direction. The outlet header 150 may be disposed long in a direction R parallel to the gas-liquid separation inlet header 110. The outlet header 150 may communicate with the channel 130.

The outlet header 150 and the gas-liquid separation inlet header 110 may be arranged side by side in a horizontally spaced state.

The outlet header 150 may be formed with a slit 150G through which the end of the refrigerant tube 140 is interpolated on one side of the wall facing the gas-liquid separation inlet header 110. In the outlet header 150, one side wall on which the slit 150G is formed may be the refrigerant tube connecting wall 150A.

The refrigerant outlet pipe 160 may be connected to the outlet header 150.

The refrigerant in the third space S3 may flow into the refrigerant outlet pipe 160.

The refrigerant outlet pipe 160 may be connected to another wall other than the refrigerant tube connecting wall 150A among the outlet headers 150.

The bypass tube 170 may have one end 171 in communication with the upper portion of the first space S1 and the other end 172 connected to the outlet header 150 or the refrigerant outlet tube 160.

One end 171 of the bypass tube 170 may be higher than the plurality of refrigerant tubes 140.

The bypass tube 170 may be bent at least once between one end 171 and the other end 172. The overall length of the bypass tube 170 may be longer than the length of the refrigerant tube 140.

A bypass channel 173 through which the gas phase refrigerant in the first space S1 passes may be formed inside the bypass tube 170. The bypass channel 173 may be formed larger than the channel 130. The gaseous refrigerant (N) in the first space (S1) can be rapidly flowed through the bypass passage (173) larger than the channel 130, and the gaseous refrigerant (N) is not accumulated in the first space (S1). .

The bypass tube 170 may be connected to the upper portion of the housing 173 in communication with the first space S1.

One end 171 of the bypass tube 170 may be connected in addition to the refrigerant tube connecting wall 110A and the lower wall 110C of the gas-liquid separation inlet header 110.

As shown in FIG. 2, the refrigerant tube connecting wall 110A of the gas-liquid separation inlet header 110 may face the lower portion of the cooling plate 180 and the battery module C.

Between the refrigerant tube connecting wall 110A of the gas-liquid separation inlet header 110 and the refrigerant tube connecting wall 150A of the outlet header 150 may be a space S4 in which the lower portion of the battery module C is located. .

When one end 171 of the bypass tube 170 is connected to the refrigerant tube connecting wall 110A of the gas-liquid separation inlet header 110, interference between the bypass tube 170 and the battery module C may occur. In this case, either one of them can damage the other.

On the other hand, if one end 171 of the bypass tube 170 is connected to the refrigerant tube connecting wall 110A of the gas-liquid separation inlet header 110, interference between the bypass tube 170 and the battery module C is minimized. The damage to the bypass tube 170 or the battery module C may be minimized.

On the other hand, if the battery module heat exchanger 4 of the present embodiment does not include the gas-liquid separation inlet header 110 and the bypass tube 170, the refrigerant inlet tube 120 and a plurality of refrigerant tubes 140 are separate When respectively connected to an inlet header (not shown), the refrigerant introduced into the inlet header through the refrigerant inlet pipe 120 may be liquid refrigerant flowing into a plurality of channels (C) together with gas phase refrigerant.

In this case, a gas phase refrigerant having a high flow rate may be concentrated in some of the plurality of refrigerant tubes 140, and the plurality of refrigerant tubes 140 may absorb heat of the battery module C with a temperature difference.

On the other hand, as in the present embodiment, when the gas-phase refrigerant is bypassed through the bypass tube 170 and the gas-liquid separation inlet header 110 distributes the liquid refrigerant to the plurality of refrigerant tubes 140, the plurality of refrigerant tubes Liquid refrigerant may be evenly distributed to all of the 140, and the whole of the plurality of refrigerant tubes 140 may evenly absorb heat of the battery module C.

The battery module heat exchanger may further include a cooling plate 180 positioned between the gas-liquid separation inlet header 110 and the outlet header 150.

The cooling plate 180 may be mounted on a plurality of refrigerant tubes 140. The battery module C may be mounted on the upper surface of the cooling plate 180.

5 is a plan view illustrating a battery module heat exchanger according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line X-X 'shown in FIG. 1.

 The gas-liquid separation inlet header 110 'of the present embodiment includes a gas-liquid separation body 115' having a first space S1 formed therein; A second space S2 is formed inside and may include an inlet header body 116 'contacting the gas-liquid separation body 115'.

Each of the gas-liquid separation body 115 ′ and the inlet header body 116 ′ may include a pair of side walls, a lower wall, an upper wall, an anterior wall, and a lower wall.

The gas-liquid separating body 115 'and the inlet header body 116' may be joined so that one side wall faces each other.

Any one of the pair of side walls constituting the inlet header body 116 ′ may be a refrigerant tube connecting wall 110A to which the refrigerant tube 140 is connected.

Further, the other of the pair of side walls constituting the inlet header body 116 'may be a gas-liquid separation body connecting wall 111B connected to the gas-liquid separation body 115'. The gas-liquid separation body connecting wall 111B may be joined to one side wall of the gas-liquid separation body 115 'by welding or the like.

A slit 110G in which an end of the refrigerant tube 140 is inserted may be formed in the inlet header body 116 '. The number of slit 110G refrigerant tubes 140 may be formed. The slit 110G is formed to face one surface of the gas-liquid separation body connecting wall 111B in the horizontal direction, but may be formed to be inconsistent with the second through hole 112B of the gas-liquid separation body connecting wall 111B in the horizontal direction. .

In addition, any one of the pair of side walls constituting the gas-liquid separation body 115 ′ may be a non-contact wall 110B that is located on the opposite side of the refrigerant tube connecting wall 110A and the refrigerant tube 140 does not contact.

In addition, the other of the pair of sidewalls constituting the gas-liquid separation body 115 'may be an inlet header body connecting wall 111A located on the opposite side of the non-contact wall 110B and connected to the inlet header body 116'. .

The inlet header body connecting wall 111A may be joined to the gas-liquid separation body connecting wall 111B by welding or the like.

The gas-liquid separation body 115 ′ may be formed with a refrigerant inlet pipe connection portion 113 and a bypass tube connection portion 114, respectively, as in one embodiment of the present invention.

The refrigerant inlet pipe 120 may be connected to the first space S1 in communication with the upper portion of the gas-liquid separation body 115 ′.

The bypass tube 170 may be connected to the first space S1 in communication with the upper portion of the gas-liquid separation body 115 '.

The inlet header body connecting wall 111A and the gas-liquid separating body connecting wall 111B may function in the same manner as the barrier 111 in one embodiment of the present invention.

A first through hole 112A through which a liquid refrigerant is discharged may be formed under a sidewall of the gas-liquid separation body 115 '. The first through hole 112A may be formed in the entrance header body connecting wall 111A.

A second through hole 112B through which the liquid refrigerant flowing into the first through hole 112A flows into the inside of the inlet header body 116 'may be formed below the side wall of the inlet header body 116'. The second through hole 112B may be formed in the gas-liquid separation body connecting wall 111B. The height of the second through hole 112B may be the same as the height of the first through hole 112A. The second through hole 112B may face the first through hole 112A in the horizontal direction.

Each of the first through hole 112A and the second through hole 112B may be formed in plural.

Each of the plurality of first through holes 112A and the plurality of second through holes 112B may be formed at equal intervals.

In this embodiment, other configurations and actions other than the configuration including the gas-liquid separation body 115 ′ and the inlet header body 116 ′ instead of the housing 115 and the cover 116 in one embodiment of the present invention are implemented in the present invention. It is the same as the example, and a detailed description thereof is omitted.

7 is a diagram illustrating a refrigerant flow of a refrigeration cycle device to which a battery module heat exchanger is applied according to an embodiment of the present invention, and FIG. 8 is a control block diagram of a refrigeration cycle device to which a battery module heat exchanger according to an embodiment of the present invention is applied, 9 is a Ph diagram of a refrigeration cycle device according to an embodiment of the present invention.

Refrigeration cycle device, as shown in Figure 7, the compressor (1), the condenser (2), the first expansion mechanism (3), the battery module heat exchanger (4), the supercooling heat exchanger (5), It may include a second expansion mechanism (6) and the evaporator (7).

The compressor 1 compresses the refrigerant when driving. A compressor suction passage 11 and a compressor discharge passage 12 may be connected to the compressor 1. The refrigerant may be sucked into the compressor 1 through the compressor suction passage 11, and compressed in the compressor 1 and then discharged into the compressor discharge passage 12.

An accumulator 15 may be installed in the compressor suction passage 11. The liquid refrigerant may be contained in the accumulator 15, and the gas phase refrigerant of the accumulator 15 may flow to the compressor 1 through the compressor suction passage 11.

The condenser 2 is connected to the compressor discharge passage 12 to condense the refrigerant.

A condenser outlet passage 21 may be connected to the condenser 2. The refrigerant condensed in the condenser 2 may be discharged to the condenser outlet passage 21.

The vehicle may further include an outdoor fan 28 that blows air toward the condenser 2.

The first expansion mechanism 3 may be connected to the condenser outlet passage 21. The refrigerant condensed in the condenser 2 may pass through the condenser outlet passage 21 and flow into the first expansion mechanism 3, and the refrigerant may be expanded by the first expansion mechanism 3.

The first expansion mechanism 3 is adjustable in its opening degree, and may be configured as an expansion valve such as EEV or LEV that can block the flow of refrigerant when fully closed.

This embodiment can be controlled by a simultaneous cooling mode in which refrigerant is supplied to both the battery module heat exchanger 4 and the evaporator 7. In this simultaneous cooling mode, the first expansion mechanism 3 and the second expansion mechanism 6 can expand the refrigerant to different pressures.

In the simultaneous cooling mode, each of the first expansion mechanism 3 and the second expansion mechanism 6 may be controlled to an opening degree for expanding the refrigerant.

In the simultaneous cooling mode, the first expansion mechanism 3 can expand the refrigerant to a higher pressure than the second expansion mechanism 6. The first expansion mechanism 3 may be controlled to an opening degree in which the refrigerant expands at a higher pressure than the second expansion mechanism 6. When the second expansion mechanism 6 expands the refrigerant at a first pressure, the first expansion mechanism 3 may expand the refrigerant to a second pressure higher than the first pressure. The second expansion mechanism 6 may be controlled to an opening degree for expanding the refrigerant to a lower pressure than the first expansion mechanism 3.

The refrigerant inflow pipe 120 of the battery module heat exchanger 4 may be connected to the first expansion mechanism 3.

A channel 130 for cooling the plurality of battery modules C may be formed in the battery module heat exchanger 4. A plurality of battery modules (C) can be mounted on the battery module heat exchanger (4), the plurality of battery modules (C) can be cooled by the refrigerant passing through the channel 130 of the battery module heat exchanger (4). have.

The plurality of battery modules C may constitute a battery module heat exchanger 4 and a battery pack P.

The battery pack P includes a carrier 98 mounted on a vehicle, a battery module heat exchanger 4 seated on the carrier 98, and a plurality of battery modules C seated on the battery module heat exchanger 4. It can contain.

The plurality of battery modules (C) may be cooled and supported by the battery module heat exchanger (4) while being placed on the battery module heat exchanger (4). The battery pack P may further include a top cover 99 covering the top surface of the carrier 98.

The refrigerant discharge pipe 160 of the battery module heat exchanger 4 may be connected to the supercooling heat exchanger 5.

The refrigerant expanded by the first expansion mechanism (3) may be introduced into the gas-liquid separation inlet header (110) through the refrigerant inlet pipe (120), and the liquid separated from the gaseous refrigerant inside the gas-liquid separation inlet header (110). The refrigerant may be introduced into the channel 130. The refrigerant may cool the battery module C while passing through the channel 130. The refrigerant in the channel 130 may flow to the outlet header 150 and may flow out from the outlet header 150 to the refrigerant outlet pipe 160.

Meanwhile, the gaseous refrigerant separated from the liquid refrigerant inside the gas-liquid separation inlet header 110 passes through the bypass tube 170 (see FIGS. 1 and 5) and bypasses the channel C, and the outlet header 150 Alternatively, it may be guided to the refrigerant outflow pipe 160. The gaseous refrigerant bypassing the channel (C) may be combined with the refrigerant passing through the channel (C) in the outlet header 150 or the refrigerant outlet pipe 160, and the battery module heat exchanger (through the refrigerant outlet pipe 160) 4).

The supercooled heat exchanger 5 may exchange the refrigerant leaked from the battery module heat exchanger 4 with the refrigerant expanded by the second expansion mechanism 6.

The supercooled heat exchanger 5 may be connected to the battery module heat exchanger 4 and the refrigerant discharge pipe 160. The supercooled heat exchanger 5 may be connected to the evaporator 7 and the evaporator connecting passage 71.

The supercooling heat exchanger (5) includes a first flow path (52) through which the refrigerant flowed in the battery module heat exchanger (4) passes, and a connection flow path (53) (54) through which the refrigerant passing through the first flow path (52) is guided. And, the refrigerant flowing in the connecting passage 53 may have a second passage 55 that is heat-exchanged with the refrigerant passing through the first passage 52.

The supercooled heat exchanger 5 may include a heat exchanger 51 composed of a double tube heat exchanger or a plate heat exchanger in which the first flow passage 52 and the second flow passage 55 are disposed with a heat transfer member therebetween. The connecting passages 53 and 54 may be located outside the heat exchanger 51, one end connected to the heat exchanger 51 in communication with the first passage 52, and the other end provided to the heat exchanger 51. 2 may be connected to the communication passage 55.

The first flow path 52 may be connected to the refrigerant discharge pipe 160 of the battery module heat exchanger 4. The refrigerant leaked from the battery module heat exchanger 4 may be introduced into the first flow path 52.

The connection passages 53 and 54 may connect the first passage 52 and the oil passage 55. The connecting passages 53 and 54 may have one end connected to the first passage 52 and the other end connected to the second passage 55. The refrigerant flowing out of the first flow path 52 may flow into the second flow path 55 after passing through the connection flow path 53.

The connecting passages 53 and 54 include a first connecting passage 53 connecting the first passage 52 and the second expanding mechanism 6, and a second expanding mechanism 6 and the second passage 55. It may include a second connecting passage 54 to connect.

The second flow passage 55 may be connected to the evaporator 7 and the evaporator connecting flow passage 71. The refrigerant flowing out of the second flow passage 55 may flow through the evaporator connecting flow passage 71 to the evaporator 7.

The second expansion mechanism 6 may be installed in the connection passages 53 and 54. The second expansion mechanism 6 may expand the refrigerant that has passed through the first flow path 52, and the refrigerant expanded by the second expansion mechanism 6 may flow into the second flow path 55.

In the refrigeration cycle device, the refrigerant may be expanded in multiple stages by the first expansion mechanism 3 and the second expansion mechanism 6.

The refrigerant passing through the first flow path 52 may flow into the second expansion mechanism 6 after passing through the first connection flow path 53, and the refrigerant flowing out from the second expansion mechanism 6 may be connected to the second connection. After passing through the flow path 54 may be introduced into the second flow path (55).

The second expansion mechanism (6) is adjustable in its opening degree, and may be configured as an expansion valve such as EEV or LEV, which can block the flow of refrigerant when fully closed.

The evaporator 7 may be connected to the compressor suction passage 11. The evaporator 7 may be connected to the second flow path 55 of the supercooling heat exchanger 5 and the evaporator connection flow path 71.

The refrigerant flowed from the evaporator connecting passage 71 to the evaporator 7 can be evaporated while passing through the evaporator 7, and the refrigerant evaporated from the evaporator 7 passes through the compressor suction passage 11 and the compressor 1 Can be inhaled with.

The evaporator 7 may evaporate the refrigerant that has passed through the second flow path 55 after being expanded by the second expansion mechanism 6. The evaporator 7 may constitute a vehicle air conditioner (HVAC; Heating, Ventilation, Air conditioner).

The air conditioner of the vehicle may include an air conditioning fan 77 that blows air toward the evaporator 7. When the air conditioning fan 77 is driven, air in the vehicle compartment or outdoor air may be blown into the vehicle compartment after being exchanged with the evaporator 7 while passing through the evaporator 7.

In the cooling operation of the vehicle compartment, the compressor 1, the outdoor fan 28, and the air conditioning fan 77 may be driven, and air may be blown into the vehicle compartment after being cooled by the evaporator 7.

In the refrigeration cycle device, the two-phase refrigerant may be discharged from the battery module heat exchanger (4).

The two-phase refrigerant leaked from the battery module heat exchanger (4) is expanded by the second expansion mechanism (6) while passing through the first flow path (52) and then dissipated by the refrigerant passing through the second flow path (55) to be supercooled. You can. The refrigerant supercooled while passing through the first flow path 52 may be expanded into a two-phase refrigerant by the second expansion mechanism 6. The refrigerant expanded by the second expansion mechanism 6 may absorb heat of the refrigerant passing through the first flow path 52 while passing through the second flow path 55. The refrigerant that has passed through the second flow passage 55 may flow to the evaporator 7. The refrigerant flowing into the evaporator 7 may be overheated while passing through the evaporator 7. In the evaporator 7, superheated gaseous refrigerant may be discharged, and superheated gaseous refrigerant may be sucked into the compressor 1.

That is, the refrigerant compressed in the condenser 2 after being compressed in the compressor 1, as shown in Figure 5, the first expansion mechanism (3), the battery module heat exchanger (4), the supercooling heat exchanger (5) Battery module heat exchanger (4) and evaporator while sequentially passing through the first flow path (52), the second expansion mechanism (6), the second flow path (55) of the supercooling heat exchanger (5), and the evaporator (7) (7) can be cooled sequentially.

In this case, the refrigeration cycle device may be a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together.

On the other hand, the refrigeration cycle device is a condenser outlet passage 21 and the battery module heat exchanger bypass passage (81) (82) connecting the connecting passage (53, 54); The battery module heat exchanger may further include a bypass valve 83 installed in the bypass passages 81 and 82.

The battery module heat exchanger bypass passages 81 and 82 may be connected between the second expansion mechanism 6 and the first passage 52 of the connection passages 53 and 54. The battery module heat exchanger bypass passages 81 and 82 may be connected to the first connection passage 53.

The refrigerant that has passed through the battery module heat exchanger bypass passages (81, 82) may be introduced into the second expansion mechanism (6) through the first connection channel (53), and expanded by the second expansion mechanism (6). Can be.

The battery module heat exchanger bypass passage (81) (82) is the first of the first bypass passage (81) connecting the condenser outlet passage (21) and the bypass valve (83), and the connecting passage (53) (54) 2 may include a second bypass channel 82 that connects the bypass valve 83 between the expansion mechanism 6 and the first channel 52.

The first bypass flow path 81 may be connected between the condenser 2 and the first expansion mechanism 3 among the condenser outlet flow paths 21.

The bypass valve 83 may be configured as an on-off valve, such as a solenoid valve that interrupts the refrigerant in the bypass flow path 82.

In the refrigeration cycle device, when the first expansion mechanism (3) is closed and the bypass valve (83) is open, the refrigerant condensed in the condenser (2) is the battery module heat exchanger bypass passage (81) (82) and bypass The first expansion mechanism 3 and the battery module heat exchanger 4 may be bypassed while passing through the valve 83. The refrigerant that bypasses the first expansion mechanism (3) and the battery module heat exchanger (4) can be flowed into the connection passages (53, 54), and connected by the battery module heat exchanger bypass passages (81, 82) The refrigerant flowing into the flow passages 53 and 54 may be expanded into a two-phase refrigerant by the second expansion mechanism 6. The refrigerant expanded by the second expansion mechanism 6 may pass through the second passage 55 of the supercooling heat exchanger 5, and the two phases passed through the second passage 55 of the supercooling heat exchanger 5. The refrigerant may be evaporated while passing through the evaporator 7 and sucked into the compressor 1 and compressed.

That is, the refrigerant condensed in the condenser 2 after being compressed in the compressor 1 is a bypass valve 83, a second expansion mechanism 6, a second flow passage 55 and an evaporator of the supercooling heat exchanger 5 Cooling mode in which the evaporator 7 can be cooled while sequentially passing through (7), and in this case, the refrigeration cycle device cools the evaporator 7 alone after the refrigerant bypasses the battery module heat exchanger 4. Can be

As shown in FIG. 8, the vehicle refrigeration cycle device further includes a control unit 90 for controlling the compressor 1, the first expansion mechanism 3, the second expansion mechanism 6, and the bypass valve 83. It can contain.

The control unit 90 may control the outdoor fan 28 and the air conditioning fan 77 together with the compressor 1.

In addition, the refrigeration cycle device may further include a temperature sensor 92 that senses the temperature of the battery module C.

The temperature sensor 92 may be installed in each of the plurality of battery modules (C), the control unit 90 selects the average of the temperature detected by the temperature sensors installed in each of the plurality of battery modules (C) as the temperature of the battery module It is possible to do. Of course, the control unit 90 may select the temperature detected by the temperature sensor installed in any one of the plurality of battery modules C as the temperature of the battery module.

If the temperature detected by the temperature sensor 92 is equal to or less than the set temperature, the battery module C may be thermo-off. Conversely, if the temperature detected by the temperature sensor 92 is higher than the set temperature, the battery module C may be thermo-on.

The vehicle may be provided with a desired temperature input unit 94 for inputting a desired temperature in the vehicle cabin. In addition, the vehicle may be provided with a vehicle temperature sensor 96 that detects the vehicle temperature.

The passenger may enter the desired temperature of the vehicle cabin through the desired temperature input unit 94.

If the temperature sensed by the vehicle temperature sensor 96 is lower than or equal to the lower limit of the desired temperature, the vehicle compartment may be turned off. Conversely, if the temperature detected by the vehicle temperature sensor 96 is greater than or equal to the upper limit of the desired temperature, the vehicle room may be thermo-on.

When the vehicle compartment is thermo-on, the control unit 90 includes a compressor 1, a first expansion mechanism 3, a bypass valve 83, and a second expansion mechanism 6 so that refrigerant flows to the evaporator 7. Can be controlled.

When the vehicle cabin is thermo-on, the control unit 90 can drive the compressor 1 and control the second expansion mechanism 6 to the opening degree at which the refrigerant expands. The control unit 90 may control the first expansion mechanism 6 to the opening degree at which the refrigerant expands or open the bypass valve 83.

When the control unit 90 controls the first expansion mechanism 6 to the opening degree at which the refrigerant expands, the bypass valve 83 may be closed. Conversely, when the first expansion valve 6 is closed, the control unit 90 may open the bypass valve 83.

The refrigeration cycle device may control the refrigerant to not flow to the evaporator 7 when the vehicle compartment is in the thermo-off state. When the vehicle compartment is thermo-off, the compressor 1 may not be driven.

Hereinafter, a case where the refrigeration cycle device is a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together with reference to FIGS. 7 and 9 will be described.

In the refrigeration cycle device, the compressor 1 is driven, the first expansion mechanism 3 is adjusted to the opening degree of expanding the refrigerant, and the second expansion mechanism 6 is adjusted to the opening degree of expanding the refrigerant, and the bypass valve ( 83) can be controlled in a simultaneous cooling mode that is closed.

The simultaneous cooling mode may be performed when the vehicle room is thermo-on and cooling of the battery module C is required.

When the temperature detected by the temperature sensor 92 in the driving mode of the vehicle exceeds the set temperature, and the vehicle compartment cooled by the evaporator 7 is thermo-on, the compressor 1 is driven, and the first expansion mechanism 3 is a refrigerant. It is adjusted to the opening degree to expand, the second expansion mechanism 6 is adjusted to the opening degree to expand the refrigerant, the bypass valve 83 may be closed.

If the temperature of the battery module (C) exceeds the set temperature, and the cooling of the vehicle compartment is required, the control unit (90) drives the compressor (1) for cooling of the battery module (C) of the battery module (C) and cooling of the vehicle compartment. You can.

In the simultaneous cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the gas phase refrigerant can be discharged from the compressor 1. The gaseous refrigerant (a) discharged from the compressor (1) can be condensed by flowing to the condenser (2) and supercooled. In the condenser 2, the supercooled liquid refrigerant b may be discharged, and the supercooled liquid refrigerant b discharged from the condenser 2 may flow to the first expansion mechanism 3.

The refrigerant flowing into the first expansion mechanism 3 may be primaryly expanded in the first expansion mechanism 3, and the refrigerant g expanded by the first expansion mechanism 3 may be a battery module heat exchanger 4 And may pass through the two-phase refrigerant in the battery module heat exchanger (4).

Among the refrigerants introduced into the gas-liquid separation inlet header 110, the gaseous refrigerant may be discharged to the refrigerant outflow pipe 160 in a gaseous state by bypassing the channel C, and among the refrigerants flowing into the gas-liquid separation inlet header 110, The liquid refrigerant may absorb heat (g-> h) of the battery module while passing through the channel (C) and then flow out into the refrigerant outflow pipe 160, and a two-phase refrigerant may flow through the refrigerant outflow pipe 160. have.

The two-phase refrigerant leaked from the battery module heat exchanger (4) may pass through the first flow path (52) of the supercooling heat exchanger (5), and supercooled while passing through the first flow path (52) of the supercooling heat exchanger (5). The refrigerant passing through the second flow path 55 of the heat exchanger 5 may be subcooled (h-> i) while heat is being deprived, and the supercooled refrigerant (1) in the first flow path 52 of the supercooling heat exchanger 5 i) can be discharged.

The supercooled refrigerant (i) discharged from the first flow path (52) of the supercooling heat exchanger (5) may expand to the two-phase refrigerant (j) while passing through the second expansion mechanism (6). The two-phase refrigerant (j) expanded by the second expansion mechanism (6) passes through the second flow path (55) of the supercooled heat exchanger (5) while passing through the first flow path (52) of the supercooled heat exchanger (5). The heat of the refrigerant can be absorbed, and the two-phase refrigerant (k) can be discharged from the second flow path (55) of the supercooling heat exchanger (5).

The two-phase refrigerant k discharged from the second flow path 55 of the supercooling heat exchanger 5 may be flowed to the evaporator 7 and evaporated while passing through the evaporator 7 to overheat (k-> m). have. In the evaporator 7, superheated gaseous refrigerant (m) may be discharged, and the gaseous refrigerant (m) may be sucked into the compressor 1 and compressed.

In this embodiment, since the gas phase refrigerant of the gas-liquid separation inlet header 110 bypasses the plurality of refrigerant tubes 140 and the liquid refrigerant is evenly distributed to the plurality of refrigerant tubes 140, the gas phase refrigerant is a plurality of refrigerants. The battery module C may be more uniformly cooled and the reliability of the battery module C may be improved than when only a part of the tube 140 is concentrated.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

4: battery module heat exchanger 110: gas-liquid separation inlet header
111: barrier 112: through
120: refrigerant inlet tube 130: channel
140: refrigerant tube 150: outlet header
160: refrigerant outlet tube 170: bypass tube
C: Battery module S1: First space
S2: Space 2

Claims (20)

  1. In the battery module heat exchanger in contact with the battery module to radiate the battery module,
    A refrigerant inlet pipe;
    A plurality of refrigerant tubes having at least one channel formed thereon;
    A first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inlet pipe and a second space in which the channel communicates are partitioned, and gas-liquid separation in which the liquid refrigerant in the first space flows into the second space An entrance header;
    An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel;
    A refrigerant outlet pipe connected to the outlet header;
    And a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe,
    The gas-liquid separation inlet header includes a barrier partitioning the first space and the second space,
    At least one through hole for guiding the liquid refrigerant in the first space to the second space is formed below the barrier.
    Battery module heat exchanger.
  2. According to claim 1,
    One end of the bypass tube is a battery module heat exchanger higher than the plurality of refrigerant tubes.
  3. According to claim 1,
    The bypass tube is a battery module heat exchanger bent at least once between one end and the other end.
  4. According to claim 1,
    A battery module heat exchanger having a bypass passage through which gaseous refrigerant in the first space passes, which is larger than the channel, and is formed inside the bypass tube.
  5. According to claim 1,
    The length of the bypass tube is longer than the length of the refrigerant tube battery module heat exchanger.
  6. delete
  7. According to claim 1,
    The through hole is a battery module heat exchanger that is inconsistent with the channel in the horizontal direction.
  8. According to claim 1,
    The gas-liquid separation inlet header
    A housing having an opening formed on one surface and a space formed therein;
    It is formed by a cover covering the opening,
    The barrier is a battery module heat exchanger formed on at least one of the housing and the cover.
  9. The method of claim 8,
    The bypass tube is a battery module heat exchanger connected to the upper portion of the housing in communication with the first space.
  10. The method of claim 8,
    A plurality of through holes are formed in the barrier,
    A plurality of through holes are battery module heat exchangers spaced apart from the barrier in a direction perpendicular to the length direction of the plurality of refrigerant tubes.
  11. In the battery module heat exchanger in contact with the battery module to radiate the battery module,
    A refrigerant inlet pipe;
    A plurality of refrigerant tubes having at least one channel formed thereon;
    A first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inlet pipe and a second space in which the channel communicates are partitioned, and gas-liquid separation in which the liquid refrigerant in the first space flows into the second space An entrance header;
    An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel;
    A refrigerant outlet pipe connected to the outlet header;
    And a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe,
    The gas-liquid separation inlet header
    A gas-liquid separation body having a first space formed therein;
    A second space is formed therein and includes an inlet header body contacting the gas-liquid separation body,
    A first through hole through which a liquid refrigerant flows is formed at a lower side of the side wall of the gas-liquid separation body,
    A battery module heat exchanger formed with a second through hole in which a liquid refrigerant flowing into the first through hole flows into the inside of the inlet header body on the lower side wall of the inlet header body.
  12. The method of claim 11,
    The bypass tube is a battery module heat exchanger connected to the upper portion of the gas-liquid separation body in communication with the first space.
  13. The method of claim 11,
    A plurality of each of the first through-hole and the second through-hole is formed,
    Each of the plurality of first through holes and the plurality of second through holes is a battery module heat exchanger formed at equal intervals.
  14. In the battery module heat exchanger in contact with the battery module to radiate the battery module,
    A refrigerant inlet pipe;
    A plurality of refrigerant tubes having at least one channel formed thereon;
    A first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inlet pipe and a second space in which the channel communicates are partitioned, and gas-liquid separation in which the liquid refrigerant in the first space flows into the second space An entrance header;
    An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel;
    A refrigerant outlet pipe connected to the outlet header;
    And a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe,
    The gas-liquid separation inlet header and outlet header are horizontally arranged battery module heat exchanger.
  15. In the battery module heat exchanger in contact with the battery module to radiate the battery module,
    A refrigerant inlet pipe;
    A plurality of refrigerant tubes having at least one channel formed thereon;
    A first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inlet pipe and a second space in which the channel communicates are partitioned, and gas-liquid separation in which the liquid refrigerant in the first space flows into the second space An entrance header;
    An outlet header spaced apart from the gas-liquid separation inlet header and in communication with the channel;
    A refrigerant outlet pipe connected to the outlet header;
    And a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe,
    A battery module heat exchanger further comprising a cooling plate mounted on the plurality of refrigerant tubes between the gas-liquid separation inlet header and outlet header, and the battery module mounted on an upper surface.
  16. A compressor connected to the compressor suction passage and the compressor discharge passage;
    A condenser connected to the compressor discharge passage and connected to a condenser outlet passage;
    A first expansion mechanism connected to the outlet passage of the condenser;
    A battery module heat exchanger connected to the first expansion mechanism and a refrigerant inlet pipe, a channel for cooling a battery module, and a refrigerant module connected to the refrigerant outlet pipe;
    An evaporator connected to the compressor suction passage;
    The first flow path connected to the refrigerant discharge pipe, the connection flow path through which the refrigerant passing through the first flow path is guided, and the refrigerant flowing in the connection flow path are exchanged with the refrigerant passing through the first flow path to connect the evaporator and the evaporator A supercooled heat exchanger having a second flow path connected to a flow path;
    It includes a second expansion mechanism installed in the connection passage,
    The battery module heat exchanger
    A plurality of refrigerant tubes having at least one channel formed thereon;
    A first space in which the liquid refrigerant and the gas phase refrigerant are separated from the refrigerant introduced into the refrigerant inlet pipe and a second space in which the channel communicates are partitioned, and gas-liquid separation in which the liquid refrigerant in the first space flows into the second space An entrance header;
    An outlet header spaced horizontally from the gas-liquid separation inlet header, the channel communicating with the refrigerant outlet pipe;
    And a bypass tube having one end connected to the upper portion of the first space and the other end connected to the outlet header or the refrigerant outlet pipe,
    The gas-liquid separation inlet header includes a barrier partitioning the first space and the second space,
    At least one through hole for guiding the liquid refrigerant in the first space to the second space is formed below the barrier.
    A refrigeration cycle device having a battery module heat exchanger.
  17. The method of claim 16,
    One end of the bypass tube is a refrigeration cycle device having a battery module heat exchanger higher than the plurality of refrigerant tubes.
  18. The method of claim 16,
    The bypass tube is a refrigeration cycle device having a battery module heat exchanger bent at least once between one end and the other end.
  19. The method of claim 16,
    A refrigeration cycle device having a battery module heat exchanger inside the bypass tube that is larger than the channel and has a bypass flow passage through which gaseous refrigerant in the first space passes.
  20. The method of claim 16,
    The length of the bypass tube is a refrigeration cycle device having a battery module heat exchanger longer than the length of the refrigerant tube.
KR1020170022298A 2017-02-20 2017-02-20 Cooling Module for battery module and Refrigerant cycling device having the same KR102093308B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170022298A KR102093308B1 (en) 2017-02-20 2017-02-20 Cooling Module for battery module and Refrigerant cycling device having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170022298A KR102093308B1 (en) 2017-02-20 2017-02-20 Cooling Module for battery module and Refrigerant cycling device having the same

Publications (2)

Publication Number Publication Date
KR20180096081A KR20180096081A (en) 2018-08-29
KR102093308B1 true KR102093308B1 (en) 2020-03-25

Family

ID=63434913

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020170022298A KR102093308B1 (en) 2017-02-20 2017-02-20 Cooling Module for battery module and Refrigerant cycling device having the same

Country Status (1)

Country Link
KR (1) KR102093308B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3637537A1 (en) * 2018-10-12 2020-04-15 Samsung SDI Co., Ltd. Bypass tube for a cooling circuit of a vehicle battery pack

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101263245B1 (en) 2010-05-27 2013-05-10 한라비스테온공조 주식회사 Battery cooling apparatus
KR20130068975A (en) * 2011-12-16 2013-06-26 (주)브이이엔에스 Batter cooling system of an electric vehicle
KR101642325B1 (en) * 2013-10-17 2016-07-25 주식회사 엘지화학 Battery module and battery pack including the same
KR101589935B1 (en) * 2014-01-06 2016-01-29 희성정밀 주식회사 Battery cooling apparatus for electric vehicle and manufacturing method thereof
KR101836185B1 (en) * 2015-07-21 2018-03-08 주식회사 아모텍 Cooling system for battery

Also Published As

Publication number Publication date
KR20180096081A (en) 2018-08-29

Similar Documents

Publication Publication Date Title
US9643469B2 (en) Vehicle thermal management system
US6293123B1 (en) Refrigeration cycle device
EP2711652B1 (en) Integral air conditioning system for heating and cooling
US10557660B2 (en) Heat exchanger with a plurality of heat exchanging portions
JP5960955B2 (en) Vehicle capacitors
US9587867B2 (en) Chiller system and control method thereof
US7690219B2 (en) Vapor compression refrigerating systems and modules which comprise a heat exchanger disposed within a gas-liquid separator
KR101397217B1 (en) Heat source unit
JP4626531B2 (en) Ejector refrigeration cycle
CN102788452B (en) Condenser for vehicle and the air conditioning system for vehicle
KR100419564B1 (en) Refrigerant cycle system with hot-gas bypass structure
US9352634B2 (en) Air conditioner for a vehicle using a composite heat exchanger
KR100261659B1 (en) Refrigerant evaporator
US20190135075A1 (en) Heat pump system for vehicle
DE112013005304T5 (en) Refrigeration cycle device
CN103959001B (en) Heat exchanger
JP2013217631A (en) Refrigeration cycle device
KR20030080081A (en) Layered heat exchanger, layered evaporator for motor vehicle air conditioners and refrigeration system
US7318320B2 (en) Humidity control apparatus
US7089760B2 (en) Air-conditioner
US8099978B2 (en) Evaporator unit
KR20130064602A (en) Condenser for vehicle
CN103998874B (en) Chiller
EP2054673B1 (en) Air conditioner
WO2009106393A1 (en) Device and method for cooling a battery module

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant