Battery thermal management method and battery thermal management device for automobile

Abstract

According to various embodiments of the present invention, there are provided a battery thermal management method and a battery thermal management apparatus for an automobile, the battery thermal management method performing temperature control of a battery based on a refrigerant, the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant, and the refrigerant includes at least one of a natural refrigerant, a hydrofluorocarbon (HFC) refrigerant, a hydrofluoroolefin (HFO) refrigerant, a hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant, which is a non-natural refrigerant, and a Haron or perfluorocarbon (PFC) refrigerant.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a battery thermal management method and a battery thermal management apparatus of an automobile. BACKGROUND

[0002] A battery of an automobile, particularly a battery in an electric vehicle, directly affects an output such as acceleration performance or lifespan of the automobile, and when the battery temperature is excessively high, an internal chemical reaction of the battery is accelerated, and thus performance can be degraded due to electrical resistance, or the lifespan of the battery can be shortened.

[0003] Preventing degradation of battery performance and maintaining efficiency are necessary methods for improving performance of an electric vehicle, and for this reason, a battery cooling system is a very important system configuration in an electric vehicle.

[0004] A battery cooling method of an electric vehicle mainly applies a liquid cooling method, which is a method of circulating cooling water or a special coolant in a battery pack to effectively transfer and remove heat, but due to the weight of the system, there can be a problem in that performance of the electric vehicle is degraded. SUMMARY

[0005] (1) Technical Problem to be Solved

[0006] The present disclosure can provide a method and an apparatus for effectively performing battery thermal management of an automobile.

[0007] The technical problems to be solved by the various embodiments are not limited to the above-mentioned problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0008] (2) Technical Solution

[0009] According to one embodiment, a battery thermal management method of an automobile can be provided, which performs temperature control of a battery based on a refrigerant including at least one of a natural refrigerant, a Hydrofluorocarbon (HFC) refrigerant, a Hydrofluoroolefin (HFO) refrigerant, a Hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant of a non-natural refrigerant, and a Halon or Perfluorocarbon (PFC) refrigerant.

[0010] Here, the natural refrigerant can include at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290).

[0011] Here, the hydrofluorocarbon (HFC) based refrigerant can include at least one of difluoromethane (R-32), 1,1-difluoroethane (R-152a), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 1,1,1-trifluoroethane (R-143a), trifluoromethane (R-23), fluoroethane (R-161), 1,1,1,2,3,3,3-heptafluoropropene (R-227ea), 1,1,1,2,3,3-hexafluoropropene (R-236ea), 1,1,1,3,3,3-hexafluoropropene (R-236fa), 1,1,1,3,3-pentafluoropropene (R-245fa), 1,1,1,3,3-pentafluorobutane (R-365mfc).

[0012] Here, the hydrofluoroolefin (HFO) based refrigerant can include at least one of 1,1,2-trifluoroethene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropene (R1224yd(Z)), 2,3,3,3-tetrafluoropropene (R-1234yf), 1,3,3,3-tetrafluoropropene (R-1234ze), 1,2,3,3-tetrafluoropropene (R-1234ye), 3,3,3-trifluoropropene (R-1243zf), 1,1-difluoroethene (R-1132a), 1,2,3,3,3-pentafluoropropene (R-1225ye).

[0013] Here, the hydrochlorofluorocarbon (HCFC) based refrigerant can include at least one of difluorochloromethane (R-22), chlorotetrafluoroethane (R-124), 1-chloro-1,1-difluoroethane (R-142b).

[0014] Here, the hydrocarbon based refrigerant of the non-natural based refrigerant can include at least one of propylene (R-1270), isobutane (R-600a), dimethyl ether, isopentane, pentane.

[0015] Here, the halon or perfluorocarbon (PFC) based refrigerant can include at least one of trifluoroiodomethane (R-13I1), octafluoropropane (R-218), octafluorocyclobutane (RC318).

[0016] Here, the battery thermal management method of the vehicle can include the steps of measuring a temperature of cooling water for cooling of the battery after the cooling water exchanges heat with the refrigerant of an air conditioning system at a preset time interval, activating a cooling electronic element to perform cooling of the cooling water when the temperature of the cooling water exceeds a preset first reference temperature, and supplying the refrigerant through a bypass pipe directly connected to the battery when the temperature of the cooling water measured after the cooling of the battery is performed based on the cooling of the cooling water exceeds a second reference temperature.

[0017] Here, the battery thermal management method of the vehicle can further include the steps of stopping the operation of the cooling electronic component and blocking the flow of the refrigerant of the bypass conduit when the temperature of the cooling water measured after the supply of the refrigerant through the bypass conduit is lower than or equal to a third reference temperature.

[0018] Here, the first reference temperature can be a preset temperature lower than or equal to the second reference temperature, and the third reference temperature can be a preset temperature lower than the first reference temperature.

[0019] According to another embodiment, there can be provided a battery thermal management device of a vehicle that controls a temperature of a vehicle battery, the battery thermal management device including a battery cooling system including a cooling water conduit such that cooling water circulates through the battery, an air conditioning system including a bypass conduit and a refrigerant conduit, the bypass conduit being capable of selectively supplying a refrigerant to the battery, the refrigerant circulating in the refrigerant conduit for controlling air conditioning of the vehicle, and a battery cooler performing heat exchange between the cooling water conduit and the refrigerant conduit, the refrigerant including at least one of a natural refrigerant, a Hydrofluorocarbon (HFC) refrigerant, a Hydrofluoroolefin (HFO) refrigerant, a Hydrochlorofluorocarbon (HCFC) refrigerant, a hydrocarbon refrigerant of a non-natural refrigerant, and a Halon or Perfluorocarbon (PFC) refrigerant.

[0020] Here, the natural refrigerant can include at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290).

[0021] Here, the Hydrofluorocarbon (HFC) refrigerant can include at least one of difluoromethane (R-32), 1,1-difluoroethane (R-152a), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 1,1,1-trifluoroethane (R-143a), trifluoromethane (R-23), fluoroethane (R-161), 1,1,1,2,3,3,3-heptafluoropropene (R-227ea), 1,1,1,2,3,3-hexafluoropropene (R-236ea), 1,1,1,3,3,3-hexafluoropropene (R-236fa), 1,1,1,3,3-pentafluoropropene (R-245fa), 1,1,1,3,3-pentafluorobutane (R-365mfc).

[0022] Here, the hydrofluoroolefin (HFO) based refrigerant can include at least one of 1,1,2-trifluoroethene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropene (R1224yd(Z)), 2,3,3,3-tetrafluoropropene (R-1234yf), 1,3,3,3-tetrafluoropropene (R-1234ze), 1,2,3,3-tetrafluoropropene (R-1234ye), 3,3,3-trifluoropropene (R-1243zf), 1,1-difluoroethene (R-1132a), 1,2,3,3,3-pentafluoropropene (R-1225ye).

[0023] Here, the hydrochlorofluorocarbon (HCFC) based refrigerant can include at least one of difluorochloromethane (R-22), chlorotetrafluoroethane (R-124), 1-chloro-1,1-difluoroethane (R-142b).

[0024] Here, the hydrocarbon based refrigerant of the non-natural based refrigerant can include at least one of propylene (R-1270), isobutane (R-600a), dimethyl ether, isopentane, pentane.

[0025] Here, the halon or perfluorocarbon (PFC) based refrigerant can include at least one of trifluoroiodomethane (R-131), octafluoropropane (R-218), octafluorocyclobutane (R-318).

[0026] Here, the battery thermal management device of the automobile can further include a processing portion that performs processing of measuring a temperature of the cooling water after the cooling water exchanges heat with the refrigerant at a preset time interval, activating a cooling electronic element to perform cooling of the cooling water when the temperature of the cooling water exceeds a preset first reference temperature, and supplying the refrigerant through the bypass pipe when a temperature of the cooling water measured after cooling of the battery is performed based on the cooling of the cooling water exceeds a second reference temperature.

[0027] Here, when the temperature of the cooling water measured after the refrigerant is supplied through the bypass pipe is lower than or equal to a third reference temperature, the processing portion can stop operation of the cooling electronic element and block the refrigerant flow of the bypass pipe.

[0028] Here, the first reference temperature can be a preset temperature that is lower than or equal to the second reference temperature, and the third reference temperature can be a preset temperature that is lower than the first reference temperature.

[0029] (III) Beneficial Effects

[0030] According to various embodiments, based on the air conditioner control method and system of the disclosure, by using the air conditioning system of the vehicle for battery cooling, it is possible to maintain high efficient battery cooling performance while reducing the volume and weight of the battery cooling system.

[0031] According to various embodiments, based on the air conditioner control method and system of the disclosure, it is possible to not only control the indoor temperature of the vehicle, but also control the battery temperature during fast charging or control the battery temperature during winter start.

[0032] According to various embodiments, the air conditioner control method and system of the electric vehicle selectively control a pipe for circulating refrigerant among a plurality of pipes based on a temperature difference between a target temperature and an indoor temperature, thereby having an effect of being able to improve heat exchange efficiency.

[0033] According to various embodiments, the air conditioner control method and system of the electric vehicle perform cooling or heating of the vehicle by variably controlling the number of pipes for circulating refrigerant among a plurality of pipes, thereby being able to sufficiently secure heat exchange performance of the refrigerant to perform fast cooling / heating. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 is a diagram schematically illustrating a configuration of an apparatus for battery temperature control for a vehicle according to an embodiment.

[0035] Figure 2 FIG. 2 is a diagram schematically illustrating detailed components of a thermal management system in the apparatus for battery temperature control according to an embodiment of the present invention.

[0036] Figure 3 and Figure 4 FIG. 3 is a diagram schematically illustrating an operation of the thermal management system according to various embodiments of the present invention.

[0037] Figure 5 FIG. 4 is a flowchart schematically illustrating an operation of the apparatus for battery temperature cooling according to an embodiment of the present invention.

[0038] Figure 6 FIG. 5 is a flowchart schematically illustrating an operation of the apparatus after performing battery temperature cooling according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention and methods of achieving them will become apparent by referring to the embodiments described below in detail in connection with the accompanying drawings. The embodiments are provided so that this disclosure will be thorough, and will fully convey the scope of the invention to those skilled in the art. The present invention can be embodied in many different forms, and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and will fully convey the scope of the invention to those skilled in the art.

[0040] However, the scope of the present application is not limited to the following disclosed embodiments, but is implemented in various different ways, and the embodiments are provided only to make the disclosure of the present application complete and to completely explain the scope of the present application to those skilled in the art to which the present application pertains, and the present application will be defined by the scope of the claims.

[0041] Hereinafter, the same reference numerals can denote the same components.

[0042] Although first, second, and the like are used to explain various components and / or parts, it is obvious that the components and / or parts are not limited by the terms. The terms are used only to distinguish one component or part from another component or part. Therefore, the first component or the first part explained below can also be the second component or the second part within the technical idea of the present disclosure.

[0043] The terms used in the present specification are used only to explain embodiments, and are not used to limit the present application. In the present specification, the singular includes the plural unless it is specifically stated otherwise. "Comprises" and / or "made of" used in the specification indicate that the components, steps, operations, and / or elements explained in the specification do not exclude the presence or addition of one or more other components, steps, operations, and / or elements.

[0044] Unless otherwise defined, all terms used in the present specification, including technical or scientific terms, can be used as meanings generally understood by those skilled in the art to which the present application pertains. In addition, unless explicitly defined otherwise, terms defined in commonly used dictionaries should not be ideally or overly formally interpreted.

[0045] Hereinafter, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. Here, the accompanying drawings attached to the present specification serve to further understand the technical idea together with the detailed description, and thus the present disclosure will not be construed to be explained only by the matters recited in the drawings.

[0046] The present disclosure can explain a battery thermal management method and a battery thermal management device for a vehicle (hereinafter, a vehicle). Here, the vehicle as an electric vehicle that drives a wheel using an electric motor can include a vehicle that drives a wheel based on electric power stored in a storage battery such as a lithium ion battery that can be charged.

[0047] Hereinafter, a method and a device for thermal management of a battery in a vehicle can be explained. However, it is not limited thereto, and the method and the device for battery thermal management can also be applied to an internal combustion engine vehicle (for example, a battery or an engine, etc.).

[0048] According to various embodiments of the present disclosure, battery thermal management of a vehicle can be performed by a battery cooling system for cooling of a battery and a heating ventilation, and air conditioning (HVAC) system for indoor temperature control of the vehicle.

[0049] Hereinafter, various embodiments of the present disclosure can be described with reference to various drawings. To this end, Figure 1 FIG. 1 is a diagram schematically illustrating a configuration of an apparatus for battery temperature control of a vehicle according to an embodiment. Figure 2 FIG. 2 is a diagram schematically illustrating detailed components of a thermal management system in an apparatus for battery temperature control according to an embodiment of the present disclosure. Figure 3 and Figure 4 FIG. 3 is a diagram schematically illustrating an operation of a thermal management system according to various embodiments of the present disclosure.

[0050] First, referring to Figure 1 An apparatus 100 for battery temperature control of a vehicle can include a thermal management system 140 for battery temperature control, a processing part 110 for controlling an operation of the thermal management system 140, a storage part 120 storing data for an operation of the processing part 110, and a communication part 130 for communication of the apparatus 100.

[0051] Here, the thermal management system 140 can include a battery cooling system 141 for cooling of a battery and a heating ventilation, and air conditioning (HVAC) system 143 for indoor temperature control of a vehicle.

[0052] Here, the apparatus 100 can be a vehicle including the thermal management system 140, or can be an apparatus controlling an operation of the thermal management system 140 in the vehicle.

[0053] The processing part 110 includes at least one processor, and can process various data for an operation of the apparatus 100 through at least one program (application, tool, plug-in, software, etc.).

[0054] The processing part 110 can control an operation or a function of components (for example, the storage part 120, the communication part 130, or the thermal management system 140, etc.) included in the apparatus 100 (or connected with the apparatus 100), and to this end, can perform transmission and reception of data with the components through the communication part 130.

[0055] The storage part 120 can include a volatile memory, a non-volatile memory, or a computer readable recording medium. At this time, the computer readable recording medium can store a computer program for an operation of the apparatus 100 based on various embodiments.

[0056] For example, the storage 120 can store various data transmitted and received or processed by at least one component (e.g., the processing unit 110 or the communication unit 130, etc.) of the device 100. For example, the data can include a program for processing a control command, data processed by the program, or input data and output data related thereto.

[0057] According to one embodiment, the storage 120 can include a program for controlling the operation of the thermal management system 140.

[0058] In addition, the storage 120 can include an artificial neural network algorithm for processing a control command, a blockchain algorithm, a deep learning algorithm, a regression analysis algorithm, and an artificial intelligence algorithm based on at least one of a mechanism, an operator, a language model, and big data related thereto.

[0059] The communication unit 130 can support establishment of a wired communication channel, establishment of a wireless communication channel, and communication performed through the established communication channel between internal components of the device 100 and / or between the device 100 and at least one other device (e.g., a user device or a server).

[0060] The thermal management system 140 can be configured to manage a heat source of a vehicle or a temperature in a vehicle cabin. According to one embodiment, the thermal management system 140 can include a battery cooling system 141 for controlling a battery temperature (e.g., battery cooling) of a vehicle and an air conditioning system 143 for controlling an indoor temperature of a vehicle.

[0061] Referring to Figure 2 For a more detailed explanation, the battery cooling system 141 can include at least a part of the battery cooling system components of a battery 201, a cooling water tank 203, at least one high-voltage component 205, a first pump 207, a second pump 209, a cooling electronic element C for cooling cooling water, and a heat exchanger 225, and can include a cooling water pipe connecting the battery cooling system components and cooling water flowing in the cooling water pipe.

[0062] Here, the battery 201 can include at least one cell. In addition, in explaining the following embodiments, the battery 201 can mean a configuration including a cell, a battery module, a battery pack, or two or more thereof.

[0063] The high-voltage component 205 can include at least one component capable of generating heat, such as a motor, an inverter, a charger, a converter (e.g., a DC-DC converter, etc.), etc.

[0064] In addition, the battery cooling system 141 can further include a battery chiller 231 for heat exchange with the air conditioning system 143.

[0065] Here, the cooling water pipe can form a first path cooling water pipe such that cooling water passes through the cooling water tank 203, the first pump 207, the high voltage component 205, and the heat exchanger 225 and flows again to the cooling water tank 203. In addition, the cooling water pipe can form a second path cooling water pipe parallel to the first path cooling water pipe such that cooling water flows from the cooling water tank 203, through the second pump 209, the battery 201, and the battery cooler 231, to the first pump 207.

[0066] Here, the cooling water pipe can be connected with at least one valve (e.g., the valve 211, the valve 213) that controls the flow (e.g., the cooling water flow direction) of the cooling water between the first path cooling water pipe and the second path cooling water pipe. Here, the valve (e.g., the valve 211, the valve 213) connected to the cooling water pipe can operate based on the control of the processing part 110.

[0067] Here, the valve 211 or 213, as a valve having one flow inlet and two flow outlets, can include a multi-way valve or a three-way valve.

[0068] The valve 211 or 213 can perform a function of flowing or blocking the flow of the fluid (e.g., cooling water) flowing from the one flow inlet to at least one of the two flow outlets according to the control of the processing part 110.

[0069] Here, the second path cooling water pipe controls the flow of the cooling water flowing from the battery cooler 231 to the second pump 209 through the valve 211, and thus can form a circulation type second path cooling water pipe 33.

[0070] Here, the cooling water pipe connected to the battery 201 can be configured such that at least a part thereof is attached outside the case of the battery 201 (or the battery inside the battery 201), or penetrates the case and / or is disposed inside the case, for battery cooling.

[0071] In addition, in the pipe of the battery cooling system 141, at least one cooling electronic component C for cooling the cooling water can be disposed in the pipe on the flow inlet side of the battery 201.

[0072] Referring to Figure 2 , the cooling electronic component C is shown as being disposed on the flow inlet cooling water pipe of the second pump 209, but is not limited thereto, and can be disposed on the flow inlet pipe of the battery 201 (e.g., between the battery 201 and the second pump 209).

[0073] Here, the cooling electronic component C can include a Peltier element using a Peltier effect of a thermoelectric cooler (TEC) and semiconductor cooling devices, etc., a Magnetocaloric Cooling Device, an Electrohydynamic (EHD) cooling element, or a Superconducting cooling device, etc.

[0074] At this time, the cooling electronic component C can be disposed so that a cool side is in contact with an outer surface of the pipe or in contact with cooling water.

[0075] Here, when the cool side of the cooling electronic component C is configured to be in contact with the cooling water, it can be configured by cutting a portion of a side of the pipe in which the cool side of the cooling electronic component C is disposed and disposing and sealing the cool side of the cooling electronic component C.

[0076] In addition, the battery cooling system 141 can include at least one temperature measurement sensor S for measuring the temperature of the cooling water passing through the battery cooler 231.

[0077] The heat exchanger 225 of the battery cooling system 141 can be configured to be shared with the air conditioning system 143. To this end, the heat exchanger 225 can include at least one radiator.

[0078] Based on this, the air conditioning system 143 can include at least a portion of the air conditioning system components of the compressor 221, the condenser 223, the heat exchanger 225, and the evaporator 227, and can include a refrigerant pipe connecting the air conditioning system components and a refrigerant flowing in the refrigerant pipe.

[0079] In addition, the air conditioning system 143 can further include a battery cooler for heat exchange with the battery cooling system 141. Here, the air conditioning system 143 can be configured to share the battery cooler 231 with the cooling system 141.

[0080] Here, the refrigerant pipe can form a first path refrigerant pipe such that the refrigerant passes through the compressor 221, the condenser 223, the heat exchanger 225, and the evaporator 227 and flows to the compressor 221 again. In addition, the refrigerant pipe can be configured as a second path refrigerant pipe (an auxiliary pipe) connected in parallel to the first path refrigerant pipe such that the refrigerant flows from the evaporator 227 to the compressor 221 through the battery cooler 231. In addition, the refrigerant pipe can be configured as a third path refrigerant pipe (a bypass pipe) connected in parallel to the second path refrigerant pipe such that the refrigerant flows from the evaporator 227 to the compressor 221 through the battery 201.

[0081] Here, the refrigerant pipe can be connected with at least one valve (for example, a valve 241) for controlling the flow of the refrigerant of the third path refrigerant pipe. Here, the valve 241 connected to the refrigerant pipe can operate based on the control of the processing part 110.

[0082] Here, as for the refrigerant filled to the refrigerant pipe, in an exemplary embodiment, at least one refrigerant among various refrigerants such as a natural system refrigerant, a Hydrofluorocarbon (HFC) system refrigerant, a Hydrofluoroolefin (HFO) system refrigerant, a Hydrochlorofluorocarbon (HCFC) system refrigerant, a hydrocarbon system refrigerant of a non-natural system refrigerant, a Halon, or a Perfluorocarbon (PFC) system refrigerant, etc. can be included. They can be used alone or in combination of two or more.

[0083] Here, the natural system refrigerant can include methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), propane (R-290), etc.

[0084] The Hydrofluorocarbon (HFC) system refrigerant can include difluoromethane (R-32), 1,1-difluoroethane (R-152a), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 1,1,1-trifluoroethane (R-143a), trifluoromethane (R-23), fluoroethane (R-161), 1,1,1,2,3,3,3-heptafluoropropane (R-227ea), 1,1,1,2,3,3-hexafluoropropane (R-236ea), 1,1,1,3,3,3-hexafluoropropane (R-236fa), 1,1,1,3,3-pentafluoropropane (R-245fa), 1,1,1,3,3-pentafluorobutane (R-365mfc), etc.

[0085] A hydrofluoroolefin (HFO)-based refrigerant can include 1,1,2-trifluoroethylene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropene (R1224yd(Z)), 2,3,3,3-tetrafluoropropene (R-1234yf), 1,3,3,3-tetrafluoropropene (R-1234ze), 1,2,3,3-tetrafluoropropene (R-1234ye), 3,3,3-trifluoropropene (R-1243zf), 1,1-difluoroethylene (R-1132a), 1,2,3,3,3-pentafluoropropene (R-1225ye), or the like.

[0086] A hydrochlorofluorocarbon (HCFC)-based refrigerant can include difluorochloromethane (R-22), chlorotetrafluoroethane (R-124), 1-chloro-1,1-difluoroethane (R-142b), or the like.

[0087] A hydrocarbon-based refrigerant of a non-natural-based refrigerant can include propylene (R-1270), isobutane (R-600a), dimethyl ether, isopentane, pentane, or the like.

[0088] A halon or perfluorocarbon (PFC)-based refrigerant can include trifluoroiodomethane (R-131), octafluoropropane (R-218), octafluorocyclobutane (R-318), or the like.

[0089] Here, as described above, the cooling water filled into the cooling water pipe of the battery cooling system 141 can include at least a part of the configuration of the refrigerant filled into the refrigerant pipe of the air conditioning system 143.

[0090] Here, the valve 241, as a valve having one flow inlet and two flow outlets, can include a multi-way valve or a three-way valve.

[0091] The valve 241 can perform a function of flowing or blocking the flow of a fluid (e.g., a refrigerant) flowing from one flow inlet to at least one of the two flow outlets according to the control of the processing part 110.

[0092] According to the above-described content, the thermal management system 140 can be configured to perform heat exchange between the cooling water pipe (e.g., the second path cooling water pipe) of the battery cooling system 141 and the refrigerant pipe (e.g., the second path refrigerant pipe) of the air conditioning system 143 through the battery cooler 231.

[0093] In more detail, the battery cooler 231 can be disposed between the battery 201 of the battery cooling system 141 and the valve 211 and between the compressor 221 and the evaporator 227 of the air conditioning system 143.

[0094] The battery cooler 231 can be configured to be opposite or cross at least a portion of the second-path refrigerant pipe (auxiliary pipe) of the air conditioning system 143 and the second-path cooling water pipe of the battery cooling system 141.

[0095] At this time, the battery cooler 231 includes at least one heat exchanger (e.g., a radiator), and can be configured to cause the refrigerant flowing in the second-path refrigerant pipe of the air conditioning system 143 to absorb heat from the cooling water flowing in the second-path cooling water pipe of the battery cooling system 141 through the heat exchanger.

[0096] To this end, the second-path cooling water pipe of the battery cooling system 141 and the second-path refrigerant pipe of the air conditioning system 143 can be configured to perform heat exchange through the heat exchanger of the battery cooler 231.

[0097] Here, the refrigerant pipe connected to the battery 201 can be configured such that at least a portion thereof is attached outside the case of the battery 201 (or the battery inside the battery 201), or penetrates the case and / or is disposed inside the case, for battery cooling.

[0098] Hereinafter, with reference to Figures 2 to 4 , an operation of controlling the moving path of the cooling water by controlling at least one valve (valve 211, valve 213, and / or valve 241) in the battery cooling system 141 and the air conditioning system 143 will be described.

[0099] First, by Figure 2 , it is described that the processing portion 110 can control the valves (valve 211 and / or valve 213) so that the cooling water flows in the battery cooling system 141 through the first-path cooling water pipe and the second-path cooling water pipe.

[0100] In more detail, the processing portion 110 can control the valve 213 so that the cooling water flowing out from the cooling water tank 203 flows in the direction of the first pump 207 and the direction of the second pump 209, and can control the valve 211 so that the cooling water flowing out from the battery cooler 231 flows in the direction of the first pump 207.

[0101] At this time, the processing portion 110 can control the valve 211 to block the flow of the cooling water from the valve 211 to the direction of the second pump 209.

[0102] In addition, the processing portion 110 can control the valve 241 so that the refrigerant flows in the air conditioning system 143 through the second-path refrigerant pipe.

[0103] In more detail, the processing portion 110 can control the valve 241 so that the refrigerant flowing out from the evaporator 227 flows in the direction of the compressor 221 through the battery cooler 231.

[0104] At this time, the processing portion 110 can control the valve 241 to block the flow of the refrigerant from the valve 241 to the battery 201 direction (the refrigerant flowing through the third path refrigerant pipe).

[0105] Hereinafter, by Figure 3 illustrating, the processing portion 110 can control the valve (the valve 211 and / or the valve 213) so that the cooling water circulates in the circulating type second path cooling water pipe 33 of the battery cooling system 141.

[0106] In more detail, the processing portion 110 can control the valve 211 and / or the valve 213 so that the cooling water passing through the second pump 209, the battery 201, the battery cooler 231 flows to the second pump 209 again. At this time, the processing portion 110 can control the valve 211 to block the flow of the cooling water from the battery cooler 231 to the first pump 207 direction.

[0107] Hereinafter, by Figure 4 illustrating, the processing portion 110 can control the valve 241 so that the refrigerant flows through the third path refrigerant pipe of the air conditioning system 143.

[0108] In more detail, the processing portion 110 can control the valve 241 so that the refrigerant flowing out from the evaporator 227 flows to the battery 201 direction. At this time, the processing portion 110 can control the valve 241 to block the flow of the refrigerant to the battery cooler 231 direction.

[0109] Hereinafter, by Figure 5 and Figure 6 , a method of performing battery thermal management based on the thermal management system 140 of the device 100 configured as described above is explained in detail. To this end, Figure 5 is a flowchart schematically illustrating the operation of the device for battery temperature cooling according to one embodiment of the present application. In addition, Figure 6 is a flowchart schematically illustrating the operation of the device after performing battery temperature cooling according to one embodiment of the present application.

[0110] In step 501, the processing portion 110 can measure the temperature of the cooling water for cooling of the battery after the cooling water exchanges heat with the refrigerant of the air conditioning system at a preset time interval.

[0111] For example, when the processing portion 110 confirms the power supply state of the vehicle (or the start state of the vehicle), the processing portion 110 can measure the temperature of the cooling water after passing through the battery cooler 231 at a preset time interval or in real time through the temperature measurement sensor S.

[0112] In more detail, the processing portion 110 can measure the temperature of the cooling water after passing through the battery cooler 231 and exchanging heat (for example, cooling) at a preset time interval or in real time.

[0113] But not limited to, when the temperature of the battery 201 (or at least one battery included in the battery, hereinafter referred to as the battery 201) exceeds the preset sensing start temperature, the processing portion 110 can measure the temperature of the cooling water after the battery cooler 231 at a preset time interval or in real time.

[0114] At the time point when the temperature measurement of the cooling water is started by the temperature measurement sensor S, as described by Figure 2 The thermal management system 140 can be in a state in which the cooling water and the refrigerant are circulating.

[0115] According to one embodiment, in step 501, the processing portion 110 can control the valve 211 and / or the valve 213 so that the cooling water flows in the battery cooling system 141 through the first path cooling water pipe and the second path cooling water pipe.

[0116] In more detail, the processing portion 110 can control the valve 213 so that the cooling water flowing out from the cooling water tank 203 flows to the first pump 207 direction and the second pump 209 direction, and can control the valve 211 so that the cooling water flowing out from the battery cooler 231 flows to the first pump 207 direction.

[0117] At this time, the cooling water flowing into the first pump 207 can pass through the high pressure component 205, the heat exchanger 225 and flow into the cooling water tank 203.

[0118] In addition, in step 501, the processing portion 110 can control the valve 241 to circulate the refrigerant to the first path refrigerant pipe and the second path refrigerant pipe in the air conditioning system 143. At this time, the operation of the air conditioning system 143 is an operation for cooling the battery 201 of the vehicle, and the processing portion 110 can control the air conditioning system 143 so that the air conditioning system 143 operates in a cooling mode, but the cooled air does not flow into the vehicle interior.

[0119] However, when the target temperature (for example, the target temperature for the cooling mode) is set according to the input of the user (for example, the indoor occupant of the vehicle), the processing portion 110 can make the air cooled according to the cooling mode flow into the indoor of the vehicle to make the indoor temperature of the vehicle reach the target temperature.

[0120] Here, when the temperature of the battery 201 is lower than or equal to the preset initial limit temperature at the time point when the temperature measurement of the battery 201 of the vehicle is started, the processing portion 110 can control the valve 213 so that the cooling water flows to the first pump 207. Here, the initial limit temperature can be a state set to be higher than the sensing start temperature.

[0121] However, when the temperature of the battery 201 exceeds the preset initial limit temperature at the time point at which the temperature measurement of the battery 201 of the vehicle is started, or the temperature change amount (or the temperature change amount average) from the time point at which the temperature measurement of the battery 201 of the vehicle is started to the preset time (for example, 30 seconds) exceeds the preset value, the processing portion 110 can control the valve 213 to reduce or block the amount of the cooling water flowing to the first pump 207.

[0122] Here, when the processing portion 110 controls to reduce the amount of the cooling water flowing to the first pump 207, the greater the temperature change amount (or the temperature change amount average), the amount of the cooling water flowing to the first pump 207 can be reduced in proportion. To this end, the storage portion 120 can be in a state in which a data table in which the cooling water flow rate flowing to the first pump 207 is preset according to the temperature change amount (or the temperature change amount average) has been stored.

[0123] Here, the time of 30 seconds is a value for describing one embodiment of calculating the temperature change amount (or the temperature change amount average) of the battery, and can be set to various time values such as 40 seconds, 45 seconds, 1 minute, and the like.

[0124] In step 503, when the temperature of the cooling water that is heat-exchanged by the battery cooler 231 exceeds the preset first reference temperature, the processing portion 110 can activate the cooling electronic component to perform cooling of the cooling water. Here, the first reference temperature can be in a state in which it is preset at a temperature higher than the initial limit temperature.

[0125] To this end, the processing portion 110 can determine whether the temperature of the cooling water measured after the cooling water that has passed through the battery cooler 231 after step 501 exceeds the first reference temperature.

[0126] At this time, when the measured temperature of the cooling water is lower than or equal to the first reference temperature, the processing portion 110 can repeatedly perform the operation of determining whether the temperature of the subsequently measured cooling water exceeds the first reference temperature.

[0127] On the other hand, when the measured temperature of the cooling water exceeds the first reference temperature, the processing portion 110 can activate the cooling electronic component C to perform cooling of the cooling water.

[0128] Here, when the measured temperature of the cooling water exceeds the first reference temperature, the processing portion 110 can control at least one valve (valve 211 and / or valve 213) so that the cooling water circulates in the circulation-type second path cooling water pipe 33.

[0129] In more detail, the processing portion 110 can control the valve 211 so that the direction of the cooling water flowing out from the battery cooler 231 is toward the second pump 209. At this time, the processing portion 110 can control the valve 211 so that the direction of the cooling water flowing out from the battery cooler 231 is not toward the first pump 207.

[0130] Thus, the cooling water flowing out from the battery cooler 231 can pass through the second pump 209, the battery 201, and flow into the battery cooler 231 again.

[0131] At this time, when the valve 213 is blocked so that the cooling water flowing out from the cooling water tank 203 is not toward the first pump 207, the processing portion 110 can control the valve 213 so that the direction of the cooling water flowing out from the cooling water tank 203 is toward the first pump 207.

[0132] Here, as in step 501, the processing portion 110 can maintain the state of the valve 241 so that the refrigerant is circulated to the first path refrigerant pipe and the second path refrigerant pipe of the air conditioning system 143.

[0133] As described above, the cooling water circulating in the circulation type second path cooling water pipe 33 is cooled for the first time by the battery cooler 231 and then cooled for the second time by the cooling electronic component C, so that the temperature of the battery 201 can be rapidly reduced.

[0134] In step 505, after the cooling of the battery based on the cooling of the cooling water by the cooling electronic component C, when the temperature of the cooling water performing heat exchange in the battery cooler 231 exceeds the second reference temperature, the processing portion 110 can supply the refrigerant through the bypass pipe directly connected to the battery. Here, the second reference temperature can be a state preset at a temperature higher than the first reference temperature.

[0135] To this end, the processing portion 110 can determine whether the temperature of the cooling water measured after the cooling water passing through the battery cooler 231 after step 503 exceeds the second reference temperature.

[0136] At this time, when the temperature of the measured cooling water is lower than or equal to the second reference temperature, the processing portion 110 can repeatedly perform the operation of determining whether the temperature of the cooling water measured thereafter exceeds the second reference temperature.

[0137] On the other hand, when the temperature of the measured cooling water exceeds the second reference temperature, the processing portion 110 can control the valve 241 so that the refrigerant flows through the bypass pipe (for example, the third path refrigerant pipe).

[0138] At this time, the processing portion 110 can control the valve 241 so that the refrigerant flowing out from the evaporator 227 is not toward the direction of the battery cooler 231.

[0139] Thus, the refrigerant of the air conditioning system 143 flows into the battery 201, and thus the temperature of the battery 201 can be rapidly cooled using the refrigerant of the air conditioning system 143.

[0140] The processing section 110 can end the operation after performing the operation of step 505. Figure 5

[0141] Hereinafter, the operation after the cooling of the battery using the battery cooling system 141 and the air conditioning system 143 will be described. Figure 6

[0142] Hereinafter, the operation of step 601 of the embodiment can be described as an operation performed after step 505 of the embodiment. Figure 6 Figure 5

[0143] In step 601, when the temperature of the cooling water measured after the refrigerant is supplied through the bypass pipe is lower than or equal to the third reference temperature, the processing section 110 can stop the operation of the cooling electronic component and block the flow of the refrigerant of the bypass pipe.

[0144] Here, the third reference temperature can be a state in which a temperature lower than the first reference temperature is preset. According to another embodiment, the third reference temperature can be a state in which a value between a temperature exceeding the initial limit temperature and a temperature lower than the first reference temperature is preset.

[0145] To this end, the processing section 110 can determine whether the temperature of the cooling water measured after the cooling water passing through the battery cooler 231 after step 505 exceeds the third reference temperature.

[0146] At this time, at the time point of performing step 505, the refrigerant flowing to the direction of the battery cooler 231 is blocked by the control of the valve 241, and thus the cooling water flowing out of the battery cooler 231 can be cooling water in a state in which heat exchange is not performed.

[0147] To this end, when the temperature of the cooling water measured after passing through the battery cooler 231 exceeds the third reference temperature, the processing section 110 can repeatedly perform the operation of determining whether the temperature of the cooling water measured thereafter exceeds the third reference temperature.

[0148] On the other hand, when the temperature of the measured cooling water is lower than or equal to the third reference temperature, the processing section 110 can end the operation of the cooling electronic component C and block the flow of the refrigerant to the bypass pipe (for example, the third path refrigerant pipe).

[0149] ​​​​In more detail, the processing portion 110 can control at least one of the valves (valve 211 and / or valve 213) to end the operation of cooling the electronic components C and cause the flow of the cooling water circulating in the second path cooling water pipe 33 to circulate through the first path cooling water pipe and the second path cooling water pipe.

[0150] For example, the processing portion 110 can control the valve 211 to cause the cooling water flowing out from the battery cooler 231 to flow to the first pump 207. At this time, the processing portion 110 can control the valve 211 to block the cooling water flowing out from the battery cooler 231 from flowing to the second pump 209 through the second path cooling water pipe 33.

[0151] In addition, the processing portion 110 can control the valve 213 to cause the cooling water flowing out from the cooling water tank 203 to flow to the second pump 209. At this time, the processing portion 110 can control the valve 213 to cause the cooling water flowing out from the cooling water tank 203 not to flow to the first pump 207.

[0152] In addition, the processing portion 110 can control the valve 241 to block the refrigerant flowing out from the evaporator 227 and flowing through the bypass pipe (third path refrigerant pipe) (or flowing in the direction of the battery 201). At this time, the processing portion 110 can control the valve 241 to cause the refrigerant flowing out from the evaporator 227 to flow in the direction of the battery cooler 231 (for example, to flow through the second path refrigerant pipe).

[0153] The processing portion 110 can end the operation of the battery cooling system 141 and / or the air conditioning system 143 after performing the operation of step 601. Figure 6

[0154] According to the above-described embodiments, the case where the battery cooler 231 is included as a component of the battery cooling system 141 and / or the air conditioning system 143 is described. However, it is not limited thereto, and the battery cooler 231 can be included in the device 100 as a component independent of the battery cooling system 141 or the air conditioning system 143.

[0155] According to the above-described description, the battery thermal management method and the battery thermal management device of the vehicle based on the present disclosure can not only be used to control the temperature of the battery, but also can reduce the possibility of thermal runaway that can occur during charging.

[0156] According to various embodiments, the battery thermal management method and the battery thermal management device of the vehicle control the battery cooling performance in stages, thereby having the effect of being able to improve the efficiency of the battery of the vehicle and effectively control the heat of the battery.

[0157] As described above, the embodiments are described by the defined drawings, but various technical modifications and variations can be applied by those skilled in the art based on various embodiments.

[0158] ​For example, performing the illustrated techniques in a different order than the illustrated methods, or combining or intermixing the illustrated components of the systems, structures, circuits, etc. in a different manner than the illustrated methods, or using other components or equivalents thereof, can also achieve suitable results.

[0159] Therefore, other embodiments and uses of the technology will suggest themselves to those skilled in the art upon consideration of this document. For instance, other modifications or variations can be made in the detail of construction or relative proportions of the components, and in the combinations and arrangement of methods, which will adapt the technology for use with any other applications.

Claims

1. A battery thermal management method for an automobile, wherein the battery thermal management method performs battery temperature control based on a refrigerant, wherein, The refrigerant includes at least one of the following: natural refrigerant, hydrofluorocarbon (HFC) refrigerant, hydrofluoroolefin (HFO) refrigerant, hydrochlorofluorocarbon (HCFC) refrigerant, hydrocarbon refrigerant (non-natural refrigerant), and halon or perfluorocarbon (PFC) refrigerant.

2. The battery thermal management method for automobiles according to claim 1, wherein, The natural refrigerant contains at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290).

3. The battery thermal management method for automobiles according to claim 1, wherein, The hydrofluorocarbon (HFC) refrigerant comprises at least one of the following: difluoromethane (R-32), 1,1-difluoroethane (R-152a), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 1,1,1-trifluoroethane (R-143a), trifluoromethane (R-23), fluoroethane (R-161), 1,1,1,2,3,3,3-heptafluoropropane (R-227ea), 1,1,1,2,3,3-hexafluoropropane (R-236ea), 1,1,1,3,3,3-hexafluoropropane (R-236fa), 1,1,1,3,3-pentafluoropropane (R-245fa), and 1,1,1,3,3-pentafluorobutane (R-365mfc).

4. The battery thermal management method for automobiles according to claim 1, wherein, The hydrofluoroolefin (HFO) refrigerant comprises at least one of 1,1,2-trifluoroethylene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropylene (R1224yd(Z)), 2,3,3,3-tetrafluoropropylene (R-1234yf), 1,3,3,3-tetrafluoropropylene (R-1234ze), 1,2,3,3-tetrafluoropropylene (R-1234ye), 3,3,3-trifluoropropylene (R-1243zf), 1,1-difluoroethylene (R-1132a), and 1,2,3,3,3-pentafluoropropylene (R-1225ye).

5. The battery thermal management method for automobiles according to claim 1, wherein, The hydrochlorofluorocarbon (HCFC) refrigerant contains at least one of difluorochloromethane (R-22), tetrafluorochloroethane (R-124), and 1-chloro-1,1-difluoroethane (R-142b).

6. The battery thermal management method for automobiles according to claim 1, wherein, The non-natural refrigerant hydrocarbon refrigerant includes at least one of propylene (R-1270), isobutane (R-600a), dimethyl ether, isopentane, and pentane.

7. The battery thermal management method for automobiles according to claim 1, wherein, The halon or perfluorocarbon (PFC) refrigerant contains at least one of trifluoroiodomethane (R-13I1), octafluoropropane (R-218), and octafluorocyclobutane (RC318).

8. The battery thermal management method for automobiles according to claim 1, wherein, The battery thermal management method includes the following steps: The temperature of the cooling water used for cooling the battery after heat exchange with the refrigerant of the air conditioning system is measured at preset time intervals. When the temperature of the cooling water exceeds a preset first reference temperature, the cooling electronic components are activated to perform cooling of the cooling water; and When the temperature of the cooling water, measured after cooling of the battery based on the cooling water, exceeds the second reference temperature, the refrigerant is supplied through a bypass pipe directly connected to the battery.

9. The battery thermal management method for automobiles according to claim 8, wherein, The battery thermal management method further includes the following steps: When the temperature of the cooling water measured after the refrigerant is supplied through the bypass pipe is lower than or equal to the third reference temperature, the operation of the cooling electronic components is stopped, and the flow of refrigerant through the bypass pipe is blocked.

10. The battery thermal management method for an automobile according to claim 9, wherein, The first reference temperature is a preset temperature that is lower than or equal to the second reference temperature, and the third reference temperature is a preset temperature that is lower than the first reference temperature.

11. A battery thermal management device for an automobile, wherein the battery thermal management device controls the temperature of the vehicle battery, wherein, The battery thermal management device includes: A battery cooling system, including cooling water pipes, circulates cooling water through the battery; An air conditioning system, including a bypass pipe and a refrigerant pipe, the bypass pipe selectively supplying refrigerant to the battery, the refrigerant circulating in the refrigerant pipe for controlling the vehicle's air conditioning; and The battery cooler performs heat exchange between the cooling water pipes and the refrigerant pipes. The refrigerant includes at least one of the following: natural refrigerants, hydrofluorocarbon refrigerants, hydrofluoroolefin refrigerants, hydrochlorofluorocarbon refrigerants, hydrocarbon refrigerants (non-natural refrigerants), and halon or perfluorocarbon refrigerants. The natural refrigerant contains at least one of methane (R-50), ammonia (R-717), carbon dioxide (R-744), ethane (R-170), and propane (R-290). The hydrofluorocarbon (HFC) refrigerant comprises at least one of the following: difluoromethane (R-32), 1,1-difluoroethane (R-152a), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 1,1,1-trifluoroethane (R-143a), trifluoromethane (R-23), fluoroethane (R-161), 1,1,1,2,3,3,3-heptafluoropropane (R-227ea), 1,1,1,2,3,3-hexafluoropropane (R-236ea), 1,1,1,3,3,3-hexafluoropropane (R-236fa), 1,1,1,3,3-pentafluoropropane (R-245fa), and 1,1,1,3,3-pentafluorobutane (R-365mfc). The hydrofluoroolefin (HFO) refrigerant comprises at least one selected from the following: 1,1,2-trifluoroethylene (R-1123), 1-chloro-2,3,3,3-tetrafluoropropylene (R1224yd(Z)), 2,3,3,3-tetrafluoropropylene (R-1234yf), 1,3,3,3-tetrafluoropropylene (R-1234ze), 1,2,3,3-tetrafluoropropylene (R-1234ye), 3,3,3-trifluoropropylene (R-1243zf), 1,1-difluoroethylene (R-1132a), and 1,2,3,3,3-pentafluoropropylene (R-1225ye). The hydrochlorofluorocarbon (HCFC) refrigerant contains at least one of difluorochloromethane (R-22), chlorotetrafluoroethane (R-124), and 1-chloro-1,1-difluoroethane (R-142b). The non-natural hydrocarbon refrigerant mentioned includes at least one of propylene (R-1270), isobutane (R-600a), dimethyl ether, isopentane, and pentane. The halon or perfluorocarbon (PFC) refrigerant contains at least one of trifluoroiodomethane (R-13I1), octafluoropropane (R-218), and octafluorocyclobutane (RC318).

12. The battery thermal management device for an automobile according to claim 11, wherein, The battery thermal management device further includes: The processing unit performs the following processes: measuring the temperature of the cooling water after heat exchange with the refrigerant at preset time intervals; activating cooling electronic components to perform cooling of the cooling water when the temperature of the cooling water exceeds a preset first reference temperature; and supplying the refrigerant through the bypass pipe when the temperature of the cooling water measured after cooling the battery based on the cooling of the cooling water exceeds a second reference temperature.

13. The battery thermal management device for an automobile according to claim 12, wherein, When the temperature of the cooling water measured after the refrigerant is supplied through the bypass pipe is lower than or equal to the third reference temperature, the processing unit stops the operation of the cooling electronic components and blocks the flow of refrigerant through the bypass pipe.

14. The battery thermal management device for an automobile according to claim 13, wherein, The first reference temperature is a preset temperature that is lower than or equal to the second reference temperature, and the third reference temperature is a preset temperature that is lower than the first reference temperature.

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