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An Integrated Thermal Management System For A Locomotory Device

Abstract: An integrated thermal management system for a locomotory device, is disclosed. Said integrated thermal management system broadly comprises: an at least a compressor (1); a double plane condenser and radiator (2); an at least a controlling member (11) an at least a coolant temperature sensing member (12); an at least a cabin temperature sensing member (13); an at least an ambient temperature sensing member (14); a first pressure sensing member (15a); a second pressure sensing member (15b); and a third pressure sensing member (16). The disclosed system offers at least the following advantages: uses only a single compressor for energy storage system and cabin and ensuring that the battery remains cool; offering improved safety and reliability; reducing the risk of thermal runaway and fires; chiller with EXV optimizes refrigerant flow based on cooling demand thereby reducing power consumption; and/or improved battery longevity resulting in reduced replacement of the locomotory device.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
27 March 2025
Publication Number
39/2025
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

SWITCH MOBILITY AUTOMOTIVE LIMITED
3rd FLOOR, PRESTIGE COSMOPOLITAN, 36, SARDAR PATEL ROAD, GUINDY, CHENNAI - 600032, TAMIL NADU

Inventors

1. GOURI PRASAD
SWITCH MOBILITY AUTOMOTIVE LIMITED, 3rd FLOOR, PRESTIGE COSMOPOLITAN, 36, SARDAR PATEL ROAD, GUINDY, CHENNAI - 600032, TAMIL NADU
2. ASHOKKUMAR SV
SWITCH MOBILITY AUTOMOTIVE LIMITED, 3rd FLOOR, PRESTIGE COSMOPOLITAN, 36, SARDAR PATEL ROAD, GUINDY, CHENNAI - 600032, TAMIL NADU
3. Dr. SHANKAR G
SWITCH MOBILITY AUTOMOTIVE LIMITED, 3rd FLOOR, PRESTIGE COSMOPOLITAN, 36, SARDAR PATEL ROAD, GUINDY, CHENNAI - 600032, TAMIL NADU

Specification

Description:TITLE OF THE INVENTION: AN INTEGRATED THERMAL MANAGEMENT SYSTEM FOR A LOCOMOTORY DEVICE
FIELD OF THE INVENTION
The present disclosure is generally related to a thermal management system. Particularly, the present disclosure is related to an integrated thermal management system for a locomotory device.
BACKGROUND OF THE INVENTION
Thermal management systems for locomotory devices are already known in the art. But such conventional thermal management systems possess drawbacks such as: usage of separate compressors in battery cooling unit and cabin cooling unit makes the system complex and costly; and complete shutdown of both battery cooling unit and cabin cooling unit in the event of any failure in the thermal management system, which in turn leads to disruption of primary functions of the locomotory device.
There is, therefore, a need in the art, for: an integrated thermal management system for a locomotory device, which overcomes the aforementioned drawbacks and shortcomings.
SUMMARY OF THE INVENTION
An integrated thermal management system for a locomotory device, is disclosed. Said integrated thermal management system broadly comprises: an at least a compressor; a double plane condenser and radiator; a battery cooling unit; and an at least a controlling member.
Said system is configured to be operated in a normal mode and in a priority mode.
The at least one compressor compresses refrigerant into a high pressure and high temperature gas and supplies to a double plane condenser and radiator and to a Heating, Ventilation and Air Conditioning System (HVAC) through a second thermostatic expansion valve.
The double plane condenser and radiator broadly comprises an at least an air disseminating member. Said at least one air disseminating member is disposed (or installed, or positioned, or installed) on a rear side of the double plane condenser and radiator, and is configured to pull ambient air to perform heat transfer.
The battery cooling unit is configured to perform thermal management of an at least an energy storage system. Said battery cooling unit broadly comprises: an at least an expansion valve; a chiller; an at least a pump; and an at least a switching member.
Said at least one expansion valve is disposed (or installed, or positioned, or installed) in an inlet of a chiller and receives the saturated liquid refrigerant from the double plane condenser and radiator for throttling, thereby causing a pressure drop, and converting the refrigerant into a low-pressure wet refrigerant.
Said chiller transfers heat from hot coolant that is exiting from the at least one energy storage system with the help of the low-pressure wet refrigerant received from the condenser and the refrigerant comes out from the chiller is returned to the at least one compressor.
Said at least one pump is disposed (or installed, or positioned, or installed) between the at least one energy storage system and the chiller. The at least one pump is configured to circulate the coolant from the at least one energy storage system to the chiller.
Said at least one switching member is configured to monitor the coolant level in the at least one energy storage system.
The HVAC broadly comprises: an at least a blower and an at least an evaporator. Said at least one blower recirculating air with a cabin and making the air to flow through the at least one evaporator.
The at least a controlling member is configured to monitor and control the operations of the system.
In an embodiment, the at least one controlling member is an Electronic Control Unit (ECU).
Said system further comprises: an at least a coolant temperature sensing member; an at least a cabin temperature sensing member; an at least an ambient sensing member; a first pressure sensing member; a second pressure sensing member; and a third pressure sensing member.
Said at least one compressor, said at least one pump, said at least one expansion valve, said at least one thermostatic expansion valve, said at least one switching member, said at least one coolant temperature sensing member, said at least one cabin temperature sensing member, said at least one ambient temperature sensing member, said first pressure sensing member, said second pressure sensing member, and said third pressure sensing member are communicatively associated with the at least one controlling member.
Said at least one controlling member is communicatively associated with an electric vehicle controlling unit of the locomotory device.
The method of working of the thermal management system is also disclosed.
The disclosed integrated thermal management system for a locomotory device offers at least the following advantages: uses only a single compressor for energy storage system and cabin and ensuring that the battery remains cool; offering improved safety and reliability; reducing the risk of thermal runaway and fires; chiller with EXV optimizes refrigerant flow based on cooling demand thereby reducing power consumption; and/or improved battery longevity resulting in reduced replacement of the locomotory device.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 illustrates an integrated thermal management system for a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 2A, Figure 2B, and Figure 2C illustrate a workflow of battery cooling unit and cabin cooling unit, of an integrated thermal management system for a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 3A, Figure 3B, Figure 3C, Figure 3D, Figure 3E, and Figure 3F illustrate a method of working of an integrated thermal management system for a locomotory device, in accordance with an embodiment of the present disclosure; and
Figure 4 illustrates a priority strategy flowchart followed in an integrated thermal management system for a locomotory device, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
Throughout this specification, the use of the words “comprise” and “include”, and variations, such as “comprises”, “comprising”, “includes”, and “including”, may imply the inclusion of an element (or elements) not specifically recited. Further, the disclosed embodiments may be embodied, in various other forms, as well.
Throughout this specification, the use of the word “system” is to be construed as: “a set of technical components (also referred to as “members”) that are communicatively and/or operably associated with each other, and function together, as part of a mechanism, to achieve a desired technical result”.
Throughout this specification, the use of the words “communication”, “couple”, and their variations (such as communicatively), is to be construed as being inclusive of: one-way communication (or coupling); and two-way communication (or coupling), as the case may be, irrespective of the directions of arrows, in the drawings.
Throughout this specification, where applicable, the use of the phrase “at least” is to be construed in association with the suffix “one” i.e. it is to be read along with the suffix “one”, as “at least one”, which is used in the meaning of “one or more”. A person skilled in the art will appreciate the fact that the phrase “at least one” is a standard term that is used, in Patent Specifications, to denote any component of a disclosure, which may be present (or disposed) in a single quantity, or more than a single quantity.
Throughout this specification, the use of the word “plurality” is to be construed as being inclusive of: “at least one”.
Throughout this specification, where applicable, the use of the phrase “at least one” is to be construed in association with a succeeding component name.
Throughout this specification, the phrases “at least a”, “at least an”, and “at least one” are used interchangeably.
Throughout this specification, the disclosure of a range is to be construed as being inclusive of: the lower limit of the range; and the upper limit of the range.
Throughout this specification, the words “the” and “said” are used interchangeably.
Throughout this specification, the use of the acronym “RPM”, is to be constructed as: “Revolutions Per Minute”.
Throughout this specification, the use of the acronym “HVAC”, is to be constructed as: “Heating, Ventilation and Air Conditioning System”.
Throughout this specification, the use of the acronym “EXV”, is to be constructed as: “Expansion Valve”.
Throughout this specification, the use of the acronym “E-TXV”, is to be constructed as: “Thermostatic Expansion Valve”.
Throughout this specification, the use of the phrase “energy storage system”, the word “battery”, the acronym “ESS”, and their variations, is to be construed as being inclusive of: “battery modules; battery packs; battery systems; and/or the like”.
Throughout this specification, where applicable, the phrase “energy storage system”, the acronym “ESS”, and the word “battery” are used interchangeably.
Throughout this specification, the use of the word “battery”, is to be constructed as: “lithium-ion-battery”.
Throughout this specification, the use of the acronyms “BCU” is to be constructed as: “Battery Cooling Unit”.
Throughout this specification, the use of the acronyms “BCS” is to be constructed as: “Battery Cooling System”.
Throughout this specification, where applicable, the acronym “BCU”, the acronym “BCS”, are used interchangeably.
Throughout this specification, the use of the acronyms “CCU” is to be constructed as: “Cabin Cooling Unit”.
Throughout this specification, where applicable, the word “Cabin Cooling Unit”, the acronym “HVAC”, are used interchangeably.
Throughout this specification, where applicable, the acronym “HVAC”, the acronym “AC”, are used interchangeably.
Throughout this specification, the use of the word “cabin”, and its variations is to be construed as “area of a locomotory device physically separated from the engine compartment, trunk or boot, etc., and including the drive. The areas designated for passengers (including driver) in the locomotory device”.
Throughout this specification, the use of the phrase “locomotory device”, and its variations, is to be construed as: “electric vehicles; battery powered vehicles; plug-in hybrid electric vehicles (PHEVs); fuel cell electric vehicles (FCEVs); range-extended electric vehicles (REEVs); and/or the like”.
Throughout this specification, the use of the phrase “integrated thermal management system for a locomotory device” and its variations, is to be construed as: “integrated thermal management system for an electric vehicle”.
Throughout this specification, the word “sensor” and the phrase “sensing member” are used interchangeably. The disclosed sensing members may be of any suitable type known in the art.
Also, it is to be noted that embodiments may be described as a method. Although the operations, in a method, are described as a sequential process, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of the operations may be re-arranged. A method may be terminated, when its operations are completed, but may also have additional steps.
An integrated thermal management system for a locomotory device (also referred to as “system”), is disclosed. In an embodiment of the present disclosure, as illustrated in Figure 1, and Figure 2a, said integrated thermal management system broadly comprises: an at least a compressor (1); a double plane condenser and radiator (2; also referred to as “condenser”); and an at least a controlling member (11).
As illustrated in Figure 1, refrigerant flow is indicated with green lines, coolant flow is indicated with blue lines, air flow is indicated with purple lines, and communication (or association) between the components is indicated with dashed lines.
Said at least one compressor (1) compresses refrigerant into a high pressure and high temperature gas and supplies to the condenser (2) and to a HVAC.
Said condenser (2), receives the refrigerant from the at least one compressor (1) as the high pressure and high temperature gas. Said condenser (2) is configured to transfer heat from refrigerant to ambient (or atmospheric) air through forced convection and causing the refrigerant to change into a high-pressure and low/medium temperature liquid. Then said high-pressure and low/medium temperature liquid passes through a first thermostatic expansion valve (E-TXV), and exits as a low-pressure and low-temperature liquid before entering a chiller (4) of a battery cooling unit (BCU), and exists the chiller (4) as a low pressure and low temperature gas.
In yet another embodiment of the present disclosure, said condenser (2) comprises: an at least an air disseminating member (2a; for example, a fan).
Said at least one air disseminating member (2a) is disposed (or installed, or positioned, or installed) on a rear side of the condenser (2). Said at least one air disseminating member (2a) is configured to pull (or suck, or draw) the ambient (or environment) air to optimize effective (or perform) heat transfer.
In yet another embodiment of the present disclosure, said condenser (2) condenses the superheated vapour refrigerant into saturated liquid refrigerant. Said condenser (2) supplies the saturated liquid refrigerant to the chiller (4) through an at least an expansion valve (3) and to the HVAC through a second thermostatic expansion valve (8; E-TXV).
Said at least one expansion valve (3) is disposed (or installed, or positioned, or installed) in an inlet of the chiller (4) and receives the saturated liquid refrigerant from the condenser (2) for throttling, thereby causing a pressure drop, and converting the refrigerant into a low-pressure wet refrigerant.
In yet another embodiment of the present disclosure, said battery cooling unit is configured to perform thermal management of an at least an energy storage system (6). The battery cooling unit broadly comprises: the at least one expansion valve (3); the chiller (4); an at least a pump (5); and an at least a switching member (7).
The low-pressure wet refrigerant flows through the chiller (4). Said chiller (4) is configured as a heat exchanger, which facilitates heat transfer from hot coolant exiting the at least one energy storage system (6) with the help of the low-pressure wet refrigerant received from the condenser (2). Then the refrigerant comes out from the chiller (4) returns to the at least one compressor (1).
In yet another embodiment of the present disclosure, the operating parameters of said chiller (4) include: coolant volume, pressure drop, and/or the like.
In yet another embodiment of the present disclosure, threshold values of the coolant volume range between about 3 Liter and about 50 Liter, and the pressure drop ranges between about 0.5 bar and about 2.5 bar.
In yet another embodiment of the present disclosure, said at least one pump (5) is disposed (or installed, or positioned, or installed) between the at least one energy storage system (6) and the chiller (4). Said at least one pump (5) is configured to circulate the coolant from the at least one energy storage system (6) to the chiller (4).
In yet another embodiment of the present disclosure, the operating parameters of said at least one pump (5) includes: coolant flow rate, pressure head, and/or the like.
In yet another embodiment of the present disclosure, threshold values of the coolant flow rate ranges between about 10 LPM (Liter per Minute) and about 80 LPM, and the pressure head ranges between about 0.5 bar and about 3 bar.
In yet another embodiment of the present disclosure, the at least one switching member (7; for example, a level switch) is configured to monitor coolant level in the at least one energy storage system (6). In addition, the at least one switching member (7) also performs priming, venting, and de-aeration.
Priming ensures the presence of the coolant at the inlet/suction port of the at least one pump (5), to prevent dry running of the at least one pump (5) during initialization. Venting facilitates to release air bubbles from the coolant, while said deaeration facilitates to removes the air-locks that prevent coolant flow within the at least one energy storage system (6).
In yet another embodiment of the present disclosure, operating parameters of the at least one energy storage system (6) includes: rate of cold plate heat generation, flow rate required, cooling plate brust pressure, and/or the like.
In yet another embodiment of the present disclosure, threshold values of the rate of cold plate heat generation ranges between about 0.7kW and about 2.3kW, the flow rate required ranges between about 6 LPM (Liter per Minute) and about 13 LPM, and cooling plate brust pressure ranges between about 8 bar and about 10 bar.
In yet another embodiment of the present disclosure, said second thermostatic expansion valve (8) receives the saturated liquid refrigerant from the condenser (2) for throttling, causing a pressure drop, converting the refrigerant into low-pressure wet refrigerant and supplies to the HVAC.
In yet another embodiment of the present disclosure, HVAC system broadly comprises: an at least a blower (9); and an at least an evaporator (10).
Said at least one blower (9) recirculates air with a cabin (17) and making the air to flow through the at least one evaporator (10), thereby cooling it down to a set temperature. A person skilled in the art will appreciate the fact that the set temperature in the HVAC is the temperature set by a user of the locomotory device and may vary based on user requirement.
In yet another embodiment of the present disclosure, the system further comprises: an at least a coolant temperature sensing member (12); an at least a cabin temperature sensing member (13); an at least an ambient temperature sensing member (14); a first pressure sensing member (15a); a second pressure sensing member (15b); and a third pressure sensing member (16).
Said at least one coolant temperature sensing member (12) is disposed (or positioned, or installed) on an output port of the chiller (4), and senses the temperature of coolant comes out from the chiller (4) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
Said at least one cabin temperature sensing member (13) is disposed (or positioned, or installed) inside the cabin (17), and senses the cabin temperature continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
Said at least an ambient sensing member (14) is disposed (or installed, or positioned, or installed) on a front side of the condenser (2), and senses the temperature of the ambient (or environment) air continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
Said first pressure sensing member (15a) is disposed (or installed, or positioned, or installed) on a refrigerant outlet of the chiller (4), and senses the pressure of the refrigerant comes out from the chiller (4) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
Said second pressure sensing member (15b) is disposed (or installed, or positioned, or installed) on a refrigerant outlet of the HVAC, and senses the pressure of the refrigerant comes out from the HVAC continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
Said third pressure sensing member (16) is disposed (or positioned, or installed) closure to the at least one compressor (1), and senses the pressure of the refrigerant comes out from the at least one compressor (1) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11).
In yet another embodiment of the present disclosure, said at least one coolant temperature sensing member (12), said at least one cabin temperature sensing member (13), and said at least one ambient temperature sensing member (14) are temperature sensors.
In yet another embodiment of the present disclosure, said first pressure sensing member (15a), said second pressure sensing member (15b), and said third pressure sensing member (16) are pressure sensors.
In yet another embodiment of the present disclosure, the at least one controlling member (11) monitors and controls the operations of the integrated thermal management system.
In yet another embodiment of the present disclosure, said at least one compressor (1), said at least one pump (5), said at least one expansion valve (3), said at least one thermostatic expansion valve (8), said at least one switching member (7), said at least one coolant temperature sensing member (12), said at least one cabin temperature sensing member (13), said at least one ambient temperature sensing member (14), said first pressure sensing member (15a), said second pressure sensing member (15b), and said third pressure sensing member (16) are communicatively associated with the at least one controlling member (11).
In yet another embodiment of the present disclosure, the at least one controlling member (11) is an Electronic Control Unit (ECU).
The method of working of the integrated thermal management system for a locomotory device, shall now be explained.
As illustrated in Figure 1, and Figure 2A, the integrated thermal management system uses intelligent technology (or technique) to control the at least one compressor (1) based on the priority strategy, and effectively cooling both the at least one energy storage system (6) and the cabin (17).
Said at least one compressor (1) compresses the refrigerant into high pressure and high temperature gas and supplies to the condenser (2) and to the HVAC. Said condenser (2) condenses the superheated vapour refrigerant into saturated liquid refrigerant. Said condenser (2) supplies the saturated liquid refrigerant to the chiller (4) through said at least one expansion valve (3) and to the HVAC through said second thermostatic expansion valve (8).
Said at least one expansion valve (3) converting the refrigerant into a low-pressure wet refrigerant. The low-pressure wet refrigerant flows through the chiller (4). Said chiller (4) transfer the heat from hot coolant exiting said at least one energy storage system (6) with the help of the low-pressure wet refrigerant received from the condenser (2). Then the refrigerant comes out from the chiller (4) returns to the at least one compressor (1).
Said at least one pump (5) circulate the coolant from the at least one energy storage system (6) to the chiller (4).
In yet another embodiment of the present disclosure, said thermostatic expansion valve (8) converting the refrigerant into low-pressure wet refrigerant and supplies to the HVAC.
Said at least one blower (9) recirculates air with the cabin (17) and making the air to flow through the at least one evaporator (10), thereby cooling it down to a set temperature. The system manages both the cabin temperature and the battery temperature by integrating the cooling processes.
In yet another embodiment of the present disclosure, the system can supply cooling to the most needed areas, prioritizing the cooling of the at least one energy storage system (6) which generate heat during charging and discharging cycles.
As illustrated in Figure 2B, the at least one compressor (1) compresses the refrigerant into high pressure and high temperature gas and supplies to the condenser (2), where heat is released to the ambient air through the at least one air disseminating member (2a). Said condenser (2) condenses the superheated vapour refrigerant into saturated liquid refrigerant.
The saturated liquid refrigerant then passes through the at least one expansion valve (3), reducing its pressure and temperature before entering the chiller (4). Then the refrigerant comes out from the chiller (4) returns to the at least one compressor (1).
Said at least one pump (5) recirculate the coolant from the at least one energy storage system (6) to the chiller (4), for maintaining the temperature of the at least one energy storage system (6).
As illustrated in Figure 2C, the at least one compressor (1) compresses the refrigerant into high pressure and high temperature gas and supplies to the condenser (2), where heat is released to the ambient air through the at least one air disseminating member (2a). Said condenser (2) condenses the superheated vapour refrigerant into saturated liquid refrigerant.
The saturated liquid refrigerant then passes through the thermostatic expansion valve (8), reducing its pressure and temperature before entering the at least one evaporator (10). Then the refrigerant comes out from the at least one evaporator (10) returns to the at least one compressor (1).
Said at least one blower (9) recirculates air with the cabin (17) and making the air to flow through the at least one evaporator (10), thereby cooling it down to a set temperature.
In yet another embodiment of the present disclosure, the coolant that is used in battery cooling unit are ethylene glycol and water mixture, and the refrigerant that is used in cabin cooling unit is cabin air.
In yet another embodiment of the present disclosure, the system is configured to be operated in a normal mode and in a priority mode by the at least one controlling member (11).
In Figure 3A, Figure 3B, Figure 3C, Figure 3D, Figure 3E, and Figure 3F, (i), (ii), (iii), and (iv) refers to mode of operation of the battery cooling unit (BCU), state of the at least one air disseminating member (2a, ON and OFF), coolant temperature at the inlet of the at least one energy storage system (6), and state of the HVAC (ON and OFF), respectively.
Mode of operation of the BCU includes: standby, recirculation, and cooling mode.
In yet another embodiment of the present disclosure, an electric vehicle controlling unit (EVCU) of the locomotory device and the at least one controlling member (11) are communicatively associated with each other.
A person skilled in the art will appreciate the fact that the coolant temperature (i.e. the temperature of the coolant that is supplied to the at least one energy storage system (6)) is set by the user (or manufacturer of the locomotory device) and that may vary depending on the type (or characteristics) of the at least one energy storage system (6).
As illustrated in Figure 3A, the system operates normally, when the BCU is in standby mode, both the at least one air disseminating member (2a) and HVAC are in OFF state and the coolant temperature at the inlet of the at least one energy storage system (6) becomes unessential.
As illustrated in Figure 3B, the system operates normally, when the BCU is in standby mode, both the at least one air disseminating member (2a) and HVAC are in ON state and the coolant temperature at the inlet of the at least one energy storage system (6) becomes unessential.
As illustrated in Figure 3C, the system operates normally, when the BCU is in recirculation mode, both the at least one air disseminating member (2a) and HVAC are in OFF state, the coolant temperature at the inlet of the at least one energy storage system (6) becomes unessential. If the health check is YES (pass) the at least one pump (5) is in ON state, or if the health check is NO (fail) the BCU is in OFF state (i.e. the system follows normal mode of operation).
As illustrated in Figure 3E, the system operates normally, when the BCU is in cooling mode, both the at least one air disseminating member (2a) and HVAC are in OFF state and the coolant temperature at the inlet of the at least one energy storage system (6) becomes temperature degree centigrade. If the health check is YES (pass) the BCU is in ON state, or if the health check is NO (fail) the BCU is in OFF state (i.e. the system follows normal mode of operation).
A control strategy (or normal mode) followed by the system, is illustrated in the following table, when the system operates normally.

As illustrated in Figure 3D, when the BCU is in recirculation mode, both the at least one air disseminating member (2a) and HVAC are in ON state and the coolant temperature at the inlet of the at least one energy storage system (6) becomes unessential. If the health check is YES (pass) the system follows the control strategy (or normal mode), or if the health check is NO (fail) the system follows the priority strategy (or priority mode).
As illustrated in Figure 3F, when the BCU is in cooling mode, both the at least one air disseminating member (2a) and HVAC are in ON state and the coolant temperature at the inlet of the at least one energy storage system (6) is at a set temperature. If the health check is YES (pass) the system follows the control strategy (or normal mode), or if the health check is NO (fail) the system follows the priority strategy (or priority mode)..
In case, if any failure (or error state) is sensed (or detected), the priority strategy followed by the system is illustrated in the following table (i.e. priority strategy table).

In yet another embodiment of the present disclosure, the work flow of the priority mode of operation of the system when the locomotory device is ON, the at least one energy storage system (6) is either under charging or discharging state, and the battery cooling unit become active, is illustrated in Figure 4.
The at least one controlling member (11) attempting to wake up, if the wake-up attempt successful, then the system checks for AC request or BCS demand. A health check is then performed. If the system is healthy (normal), then the system will work as per the control strategy (in the normal mode).
If the system is not healthy (i.e. any failure is detected), the priority strategy is followed (i.e. the system will be in the priority mode), and a notification (or warning, or alert) message is displayed to a user (i.e. driver) on a cluster screen of the locomotory device. The locomotory device is switched to deration and/or limp mode, only if the failure is critical (e.g. compressor fault). Otherwise, the locomotory device performs normally.
The priority strategy followed by the system during the detection of any failure is illustrated with the following example, in association with the priority strategy table.
Said system is configured to perform within a pressure range of up to about 25 bars. If the pressure exceeds this limit, the system is shut down (or cut-off) by the ECU (11) and a high discharge pressure warning is triggered (or displayed) to the user.
The ECU (11) restarts the system by prioritizing the BCU after disabling the HVAC demand and leaving only the at least one blower (9) in ON state.
If the high-pressure persists, the ECU (11) changes the speed of the at least one air disseminating member (2a), from low to high, for the system adopting to the condition.
If the high-pressure still continues, the ECU (11) adjusts the RPM of the at least one compressor (1) to lower the pressure, by leaving at least one air disseminating member (2a) to operate at high speed.
Even still the high-pressure continues, the system is shut down (or cut-off) by the ECU (11) and a high discharge pressure warning is triggered (or displayed) to the user on the cluster screen of the locomotory device.
The disclosed integrated thermal management system for a locomotory device offers at least the following advantages: uses only a single compressor for energy storage system and cabin and ensuring that the battery remains cool; offering improved safety and reliability; reducing the risk of thermal runaway and fires; chiller with EXV optimizes refrigerant flow based on cooling demand thereby reducing power consumption; and/or improved battery longevity resulting in reduced replacement of the locomotory device.
It will be apparent to a person skilled in the art that the above description is for illustrative purposes only and should not be considered as limiting. Various modifications, additions, alterations, and improvements without deviating from the spirit and the scope of the disclosure may be made by a person skilled in the art. Such modifications, additions, alterations, and improvements should be construed as being within the scope of this disclosure.

LIST OF REFERENCE NUMERALS
1 – At Least One Compressor
2 – Double Plane Condenser and Radiator
2a – At Least One Air Disseminating Member
3 – At Least One Expansion Valve
4 – Chiller
5 – At Least One Pump
6 – At Least One Energy Storage System
7 – At Least One Switching Member
8 – Second Thermostatic Expansion Valve
9 – At Least One Blower
10 – At Least One Evaporator
11 – At Least One Controlling Member or Electronic Controlling Unit (ECU)
12 – At Least One Coolant Temperature Sensing Member
13 – At Least One Cabin Temperature Sensing Member
14 – At Least One Ambient Temperature Sensing Member
15a – First Pressure Sensing Member
15b – Second Pressure Sensing Member
16 – Third Pressure Sensing Member
17 – Cabin , Claims:1. An integrated thermal management system for a locomotory device that is configured to be operated in a normal mode and in a priority mode, said system comprising:
an at least a compressor (1) that compressing refrigerant into a high pressure and high temperature gas and supplying to a double plane condenser and radiator (2) and to a Heating, Ventilation and Air Conditioning System through a second thermostatic expansion valve (8);
the double plane condenser and radiator (2) that comprises an at least an air disseminating member (2a), said at least one air disseminating member (2a) being disposed on a rear side of the double plane condenser and radiator (2), and being configured to pull ambient air to optimize effective heat transfer;
a battery cooling unit that is configured to perform thermal management of an at least an energy storage system (6), said battery cooling unit comprising:
an at least an expansion valve (3) that is disposed in an inlet of a chiller (4) and receives the saturated liquid refrigerant from the double plane condenser and radiator (2) for throttling, thereby causing a pressure drop, and converting the refrigerant into a low-pressure wet refrigerant;
a chiller (4) that transferring heat from hot coolant that is exiting from the at least one energy storage system (6) with the help of the low-pressure wet refrigerant received from the condenser (2) and the refrigerant comes out from the chiller (4) being returned to the at least one compressor (1);
an at least a pump (5) that is disposed between the at least one energy storage system (6) and the chiller (4), said at least one pump (5) being configured to circulate the coolant from the at least one energy storage system (6) to the chiller (4); and
an at least a switching member (7) that is configured to monitor the coolant level in the at least one energy storage system (6);
the Heating, Ventilation and Air Conditioning System that comprises: an at least a blower (9), and an at least an evaporator (10), with: said at least one blower (9) recirculating air with a cabin (17) and making the air to flow through the at least one evaporator (10);
an at least a controlling member (11) that monitoring and controlling the operations of the system;
an at least a coolant temperature sensing member (12) that is disposed on an output port of the chiller (4), and senses the temperature of coolant comes out from the chiller (4) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11);
an at least a cabin temperature sensing member (13) that is disposed inside the cabin (17), and senses the cabin temperature continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11);
an at least an ambient sensing member (14) that is disposed on a front side of the condenser (2), and senses the temperature of the ambient air continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11);
a first pressure sensing member (15a) that is disposed on a refrigerant outlet of the chiller (4), and senses the pressure of the refrigerant comes out from the chiller (4) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11);
a second pressure sensing member (15b) that is disposed on a refrigerant outlet of the Heating, Ventilation and Air Conditioning System, and senses the pressure of the refrigerant comes out from the Heating, Ventilation and Air Conditioning System continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11); and
a third pressure sensing member (16) that is disposed closure to the at least one compressor (1), and senses the pressure of the refrigerant comes out from the at least one compressor (1) continuously, in real-time, with the sensed data being transmitted to the at least one controlling member (11), with:
said at least one compressor (1), said at least one pump (5), said at least one expansion valve (3), said at least one thermostatic expansion valve (8), said at least one switching member (7), said at least one coolant temperature sensing member (12), said at least one cabin temperature sensing member (13), said at least one ambient temperature sensing member (14), said first pressure sensing member (15a), said second pressure sensing member (15b), and said third pressure sensing member (16) being communicatively associated with the at least one controlling member (11), and
said at least one controlling member (11) being communicatively associated with an electric vehicle controlling unit of the locomotory device.
2. The integrated thermal management system for a locomotory device as claimed in claim 1, wherein the at least one controlling member (11) is an Electronic Control Unit.

Documents

Application Documents

# Name Date
1 202541028868-POWER OF AUTHORITY [27-03-2025(online)].pdf 2025-03-27
2 202541028868-FORM-5 [27-03-2025(online)].pdf 2025-03-27
3 202541028868-FORM 3 [27-03-2025(online)].pdf 2025-03-27
4 202541028868-FORM 1 [27-03-2025(online)].pdf 2025-03-27
5 202541028868-FIGURE OF ABSTRACT [27-03-2025(online)].pdf 2025-03-27
6 202541028868-DRAWINGS [27-03-2025(online)].pdf 2025-03-27
7 202541028868-DECLARATION OF INVENTORSHIP (FORM 5) [27-03-2025(online)].pdf 2025-03-27
8 202541028868-COMPLETE SPECIFICATION [27-03-2025(online)].pdf 2025-03-27
9 202541028868-FORM 18 [10-09-2025(online)].pdf 2025-09-10
10 202541028868-FORM-9 [24-09-2025(online)].pdf 2025-09-24