A portable device and method for performance testing of at least one rechargeable battery

Abstract

The disclosed device (100) includes a base (102) adapted to secure the at least one rechargeable battery (101) during the performance testing. The device (100) includes a cap (104) engageble with the base (102) defining a testing chamber (106) therebetween. The cap (104) is adapted to seal the testing chamber (106) and maintain a controlled environment within the testing chamber (106). A thermal regulation unit (108) is operatively coupled to the testing chamber (106). The thermal regulation unit (108) is configured to heat or cool the at least one rechargeable battery (101). A sensing unit (109) is operatively coupled to the thermal regulation unit (108), to continuously monitor and transmit one or more operational parameters to a user interface (126), to allow analysis of the at least one rechargeable battery (101) under variable temperature and pressure conditions.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to the technical field ofelectrochemical energy storage systems. In particular, it pertains to a portabledevice and method for performance testing of at least one rechargeable battery suchas a coin cell. The invention specifically addresses the development of a portable,sensor-integrated, and vacuum-enabled device for precise evaluation ofperformance of the rechargeable battery under variable environmental conditionssuch as variable temperature and pressure.BACKGROUND

[0002] Background description includes information that may be useful inunderstanding the present invention. It is not an admission that any of theinformation provided herein is prior art or relevant to the presently claimedinvention, or that any publication specifically or implicitly referenced is prior art.

[0003] Rechargeable batteries, such as lithium-ion and emerging solid-statebatteries, are critical components in numerous modern technologies, includingelectric vehicles, portable electronic devices, wearable sensors, and grid-scaleenergy storage systems. The electrochemical performance, safety, and operationallifespan of these batteries are highly sensitive to temperature and humidity, whichinfluence parameters such as ion transport kinetics, internal resistance, electrode-electrolyte interfacial stability, and degradation behaviour.

[0004] Accurate characterization of temperature-dependent electrochemicalbehaviour is therefore essential for optimizing battery materials, cell design, andoperating protocols. Conventional testing methods typically employ large-scalethermal chambers or glove boxes to control the environmental conditions duringelectrochemical measurements. While effective for bulk studies, these systems arecostly, non-portable, and require substantial laboratory infrastructure. Additionally,they often lack the ability to monitor both temperature and humidity in real time atthe single-cell level, limiting their suitability for small-scale or on-site testingapplications.

[0005] Existing setups are generally not optimized for compact integration withstandard electrochemical workstations and may require extensive modifications orexternal instrumentation for environmental control. Moreover, such systems oftenfail to provide localized and precise environmental management, leading toinconsistent or non-reproducible data. The inability to achieve simultaneous controland monitoring of temperature, humidity, and electrochemical parameters in aportable and cost-effective platform represents a significant limitation in the currentstate of the art.

[0006] Accordingly, there is a need for a compact, economical, and versatile testingdevice capable of providing controlled thermal and humidity environments forrechargeable coin cells. Such a device should integrate environmental sensing andvacuum control functions, ensure compatibility with standard electrochemicalmeasurement systems, and enable accurate, reproducible, and real-timeperformance evaluation under variable environmental conditions.

[0007] Therefore, there is a clear need for a portable device and method forperformance testing of at least one rechargeable battery such as a coin cell undervariable environmental conditions.OBJECTS OF THE PRESENT DISCLOSURE

[0008] An object of the present disclosure relates, in general, to the field ofelectrochemical energy storage systems, and more specifically, relates to a portabledevice and method for performance testing of at least one rechargeable battery.

[0009] Another object of the present disclosure is to develop a portable, compact,and cost-effective unit capable of real-time temperature and humidity monitoringduring electrochemical testing of rechargeable coin cell, including bothconventional and solid-state types.

[0010] Another object of the present disclosure is to design and fabricate a compactand integrated device capable of accurately controlling andmonitoring temperature,humidity, and testing duration during electrochemical evaluation of the coin cell.

[0011] Another object of the present disclosure is to provide a device designed tomaintain low-pressure conditions ranging from 10-3 to 10-4 Torr, therebyminimizing environmental interference and ensuring stable and reproducible testingconditions.

[0012] Yet another object of the present disclosure is to ensure completecompatibility of the device with standard electrochemical workstations, enablingseamless in situ electrochemical measurements without modification to existinglaboratory infrastructure.

[0013] Yet another object of the present disclosure is to enable real-time dataacquisition, logging, and display, allowing continuous observation of temperature,humidity, and time parameters during testing.

[0014] Still yet another object of the present disclosure is to ensure durability,thermal insulation, and chemical safety of the device under varying test conditions.

[0015] Still yet another object of the present disclosure is to provide a versatile andprecise testing platform that facilitates temperature-dependent electrochemicalstudies across a broad range, from room temperature up to 120 °C, with atemperature control precision of ±1 °C.SUMMARY

[0016] The present disclosure relates, in general, to the field of electrochemicalenergy storage systems, and more specifically, relates to a portable device andmethod for performance testing of at least one rechargeable battery.

[0017] According to an aspect, the present disclosure relates to a portable devicefor performance testing of at least one rechargeable battery. The disclosed deviceincludes a base adapted to secure the at least one rechargeable battery during theperformance testing. The device includes a cap engageble with the base defining atesting chamber therebetween. The cap is adapted to seal the testing chamber andmaintain a controlled environment within the testing chamber. Further, the deviceincludes a thermal regulation unit operatively coupled to the testing chamber. Thethermal regulation unit is configured to heat or cool the at least one rechargeablebattery.

[0018] In addition, the device includes a sensing unit operatively coupled to thethermal regulation unit. The sensing unit is configured to continuously monitor andtransmit one or more operational parameters to a user interface, to allow analysis ofthe at least one coin cell under variable temperature and pressure conditions.

[0019] In one or more embodiments, the base may be made of a thermally stableand electrically conductive material capable of withstanding temperature up to 200°C.

[0020] In one or more embodiments, the device may include one or more electricalinterfaces provided at a top surface of the testing chamber, to facilitate connectionof the device to an electrochemical workstation for electrochemical analysis.

[0021] In one or more embodiments, the sensing unit may be operatively coupledto the testing chamber via a first connection point provided at a side surface of thetesting chamber.

[0022] In one or more embodiments, the sensing unit may include one or morethermocouples configured for sensing a temperature of the testing chamber duringthe performance testing, and connected to the testing chamber via a secondconnection point.

[0023] In one or more embodiments, the sensing unit may include a digital displayfor real-time visualization of the one or more operation parameters.

[0024] In one or more embodiments, the one or more operating parameters mayinclude: a temperature data, a humidity data, and a time data.

[0025] In one or more embodiments, the device may include a pressure regulationinterface configured at the side surface of the testing chamber, and connected to avacuum pump. The pressure regulation interface may be configured to establish andmaintain a low-pressure environment within the testing chamber.

[0026] In one or more embodiments, the pressure regulation interface may facilitatemaintaining the low-pressure environment within the testing chamber in a range ofabout 10-3 to 10-4 Torr.

[0027] In one or more embodiments, the thermal regulation unit may regulate thetemperature of the testing chamber using a heater and a feedback from the sensingunit.

[0028] In one or more embodiments, the cap may be made of a non-conductive,heat-resistant polymer selected from a group consisting of: Polyether Ether Ketone(PEEK) and polytetrafluoroethylene.

[0029] In one or more embodiments, the at least one rechargeable battery may beone or more of: a lithium battery, and a coin cell.

[0030] In another aspect, the present disclosure pertains to a method forperformance testing of at least one rechargeable battery. The disclosed methodincludes placing the at least one rechargeable battery on a base associated with adevice. The method includes engaging the base with a cap defining a testingchamber therebetween, where the cap is adapted to seal the testing chamber andmaintain a controlled environment within the testing chamber. Further, the methodincludes evacuating the testing chamber through a pressure regulation interface tomaintain a low-pressure environment within the testing chamber in a range of about10-3 to 10-4 Torr. The pressure regulation interface is provided at a side surface ofthe testing chamber. Furthermore, the method includes connecting a sensing unitand a thermal regulation unit to corresponding connection points.

[0031] In addition, the method includes regulating a temperature of the testingchamber via a heater associated with the thermal regulation unit and a feedbackfrom the sensing unit. The method includes connecting terminals of the at least onerechargeable battery to an electrochemical workstation through one or moreelectrical interfaces provided at a top surface of the testing chamber. Further, themethod includes monitoring, via the sensing unit, one or more operating parametersduring the electrochemical analysis. Furthermore, themethod includes transmitting,the monitored parameters to a user interface, thereby allowing analysis of the atleast one coin cell under variable temperature and pressure conditions.

[0032] Various objects, features, aspects, and advantages of the inventive subjectmatter will become more apparent from the following detailed description ofpreferred embodiments, along with the accompanying drawing figures in which likenumerals represent like components.BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following drawings form part of the present specification and areincluded to further illustrate aspects of the present disclosure. The disclosure maybe better understood by reference to the drawings in combination with the detaileddescription of the specific embodiments presented herein.

[0034] FIG. 1A illustrates an exemplary block diagram of a proposed device forperformance testing of at least one rechargeable battery, in accordance with one ormore embodiments of the present disclosure.

[0035] FIG. 1B illustrates a schematic diagram of a testing chamber of the proposeddevice of FIG. 1A, in accordance with one or more embodiments of the presentdisclosure.

[0036] FIG. 2 illustrates an exemplary flow chart of a proposed method forperformance testing of at least one rechargeable battery, in accordance with one ormore embodiments of the present disclosure.

[0037] FIG. 3 shows result data plotted for Electrochemical ImpedanceSpectroscopy (EIS) of Lithium-ion coin cell using the proposed device.DETAILED DESCRIPTION

[0038] The following is a detailed description of embodiments of the disclosuredepicted in the accompanying drawings. The embodiments are in such detail as toclearly communicate the disclosure. If the specification states a component orfeature "may", "can", "could", or "might" be included or have a characteristic, thatparticular component or feature is not required to be included or have thecharacteristic.

[0039] As used in the description herein and throughout the claims that follow, themeaning of "a," "an," and "the" includes plural reference unless the context clearlydictates otherwise. Also, as used in the description herein, the meaning of "in"includes "in" and "on" unless the context clearly dictates otherwise.

[0040] The present disclosure relates, in general, to the field of electrochemicalenergy storage systems. In particular, it pertains to a portable device and methodfor performance testing of at least one rechargeable battery such as a coin cell. Theinvention specifically addresses the development of a portable, sensor-integrated,and vacuum-enabled device for precise evaluation of performance of therechargeable battery under variable environmental conditions such as variabletemperature and pressure.

[0041] Existing devices and methods for temperature-dependent testing ofrechargeable coin cells suffer from several drawbacks. Conventional setups such asthermal chambers, glove boxes, and customized laboratory systems are often bulky,non-portable, and expensive, requiring substantial infrastructure and maintenance.These systems typically lack the capability for localized, real-time monitoring ofboth temperature and humidity at the individual coin cell level, leading toinconsistent environmental control and poor reproducibility of electrochemicaldata. Additionally, most existing devices are not readily compatible with standardelectrochemical workstations, necessitating complex modifications or externalinstrumentation for in situ testing. Furthermore, the absence of integrated sensors,vacuum functionality, and digital data acquisition limits their ability to accuratelysimulate and monitor realistic operating environments, thereby constraining theirapplicability in advanced battery research and development.

[0042] The proposed device and method overcomes the limitations associated withexisting battery testing devices by providing a controlled environment forelectrochemical evaluation of a rechargeable battery under variable temperature,pressure, and humidity conditions. Unlike prior art devices, which may suffer frominconsistent temperature distribution, environmental interference, or lack of realtimemonitoring, the present invention integrates a sealed testing chamber, precisethermal regulation unit, vacuum or low-pressure control, and a sensing unit withreal-time data visualization. This configuration enables accurate, reproducible, andreliable electrochemical measurements, including voltage, current, capacity, andimpedance, while minimizing the effects of external environmental fluctuations.Additionally, the device allows for simultaneous electrical connectivity to anelectrochemical workstation and continuous monitoring of temperature, humidity,and elapsed time, thereby providing a comprehensive platform for studyingperformance of the rechargeable battery under controlled thermal stress.

[0043] Referring to FIGs. 1A-1B, the disclosed device 100 includes a base 102adapted to secure the at least one rechargeable battery 101 (also referred as"rechargeable battery 101" or "coin cell 101" herein) during the performancetesting. The rechargeable battery 101 can include, but not limited to, a lithiumbattery or a coin cell. For illustration purposes, the rechargeable battery 101described herein can be considered as the coin cell, although the invention is notlimited to this form only. The base 102 can be made of a thermally stable andelectrically conductive material capable of withstanding temperature up to 200 °C.The base 102 can be fabricated from anodized aluminium, stainless steel, nickel,brass, copper, and the like, without any limitations. This combination of materialstrength, heat tolerance, and electrical conductivity ensures that the base 102functions both as a mechanical support and a thermal interface, minimizingtemperature gradients and improving the accuracy of temperature-dependentperformance testing. Additionally, the thermal mass of the base 102 contributes tostable heating and cooling profiles, preventing rapid temperature fluctuations thatcould otherwise distort performance testing data.

[0044] The device 100 includes a cap 104 engageble with the base 102 defining atesting chamber 106 therebetween. The cap 104 is adapted to seal the testingchamber 106 and maintain a controlled environment within the testing chamber106. A high-temperature gasket 128 can be disposed between the cap 104 and thebase 102. The gasket 128 being configured to withstand elevated thermal conditionswhile maintaining an airtight and leak-proof seal within the testing chamber 106.The cap 104 can be made of a non-conductive, heat-resistant polymer selected from,but not limited to, a group consisting of: Polyether Ether Ketone (PEEK) andpolytetrafluoroethylene, providing both electrical insulation and chemicalresistance. As can be appreciatedhe cap 104 can be specifically designed to seal thetesting chamber 106 in an airtight manner, thereby maintaining a controlled internalenvironment suitable for temperature- and pressure-dependent performance testingof the coin cell. The secure engagement between the cap 104 and base 102 preventsexternal contamination, moisture ingress, or gas leakage, which could otherwiseinterfere with the accuracy of results achieved by the performance testing.

[0045] In an embodiment, the device 100 includes a thermal regulation unit 108operatively coupled to the testing chamber 106. The thermal regulation unit 108 isconfigured to heat or cool the coin cell, thereby enabling precise control overtemperature conditions experienced by the rechargeable battery 101 duringelectrochemical analysis. The thermal regulation unit 108 can include a heaterhaving a heater element such as but not limited to resistive cartridge heater, flexiblefilm heater, or embedded heating coil, operatively coupled to the base 102 orsurrounding wall of the testing chamber 106. The heating element can be designedto provide uniform heat distribution across surfaces of the testing chamber 106 toprevent localized hotspots and ensure thermal equilibrium within the testingchamber 106. The heater can be connected to the testing chamber 106 via a thirdconnection point 124.

[0046] In an embodiment, the device 100 includes a sensing unit 109 operativelycoupled to the thermal regulation unit 108. The sensing unit 109 is configured tocontinuously monitor and transmit one or more operational parameters to a userinterface 126, to allow analysis of the at least one coin cell under variabletemperature and pressure conditions. The thermal regulation unit 108 can regulatethe temperature of the testing chamber 106 using the heater and a feedback fromthe sensing unit 109. The sensing unit 109 can be connected to the testing chamber106 via a first connection point 120 provided at a side surface of the testing chamber106. The sensing unit 109 can include one or more thermocouples configured forsensing a temperature of the testing chamber 106 during the performance testing,and connected to the testing chamber 106 via a second connection point 122. Insome embodiments, the sensing unit 109 can include Resistance TemperatureDetectors (RTDs) for sensing the temperature of the testing chamber 106. Thethermal regulation unit 108 can adjust power supplied to the heater in response tothe sensed temperature, maintaining the temperature within a pre-set temperaturerange of the testing chamber 106.

[0047] A person skilled in the art would appreciate the combination of the heaterand the feedback from the sensing unit 109 ensures that the testing environmentcan simulate realistic thermal stress conditions, including gradual heating, rapidthermal cycling, or sustained high-temperature operation, while maintainingstability, safety, and reliability during extended periods of the performance testing.

[0048] In an embodiments, the operating parameters can be transmitted to the userinterface 126 via a wireless communication module. The wireless communicationmodule may utilize standard communication protocols, including, but not limitedto, Wi-Fi, Bluetooth, Zigbee, LoRa, NFC, or cellular (4G / 5G) technologies. Thisconfiguration enables real-time remote monitoring and control of the coin celltesting environment without physical connection to the user interface 126. Inalternate embodiments, the sensing unit 109 can also communicate with the userinterface 126 via wired connections, such as Universal Serial Bus (USB), Ethernet,or serial interfaces, providing redundant or high-speed data transfer options whenrequired.

[0049] In an embodiment, the coin cell 101 can be placed on the base 102 at aposition P1. The base 102 can have an insulating layer 134 configured to minimizethermal and electrical interference, thereby ensuring stable and reliable operationof the components housed within the testing chamber 106. The sensing unit 109 canbe mounted over a pair of holding pillars 130, each equipped with a spring 132(Refer FIG. 1B). The springs 132 allow the sensing unit 109 or circuitry to remainsecurely supported at a position P2 while also enabling controlled verticaldisplacement to accommodate pressure, vibration, or mechanical tolerances duringtesting.

[0050] Further, the sensing unit 109 can include a digital display 112 for real-timevisualization of the one or more operation parameters. The one or more operatingparameters can include but not limited to: a temperature data, a humidity data, anda time data. The temperature data can be measured using either the thermocouples,resistance temperature detectors (RTDs), or equivalent sensor, providing accuratedata on the thermal environment surrounding the rechargeable battery 101. Thehumidity data reflects a moisture content within the testing chamber 106, which caninfluence electrochemical performance and stability. The time data records aduration of the performance test or elapsed time since a particular event, facilitatingcorrelation between environmental conditions and behaviour of the rechargeablebattery 101.

[0051] In certain embodiments, the sensing unit 109 can also record additionalparameters, such as voltage, current, or state-of-charge of rechargeable battery 101,thereby providing a comprehensive overview of both environmental andelectrochemical conditions. The data collected by the sensing unit 109 can becontinuously updated and displayed on the user interface 126 in real time, allowingusers to monitor trends, detect deviations, and ensure reliable and reproducibletesting outcomes.

[0052] In an embodiment, the user interface 126 can be a digital interfaceconfigured to provide real-time visualization and interaction with one or moreoperating parameters of the testing chamber 106 and the rechargeable battery 101.In some embodiments, the user interface 126 can take other forms in addition to thedigital display 112, such as a touchscreen, Light-Emitting Device (LED) indicatorpanel, graphical interface, or mobile application interface, providing flexibility inhow a user interacts with the device 100.

[0053] In an embodiment, the device 100 can includes a pressure regulationinterface 114 configured at the side surface of the testing chamber 106, andconnected to a vacuum pump 116. The pressure regulation interface 114 can beconfigured to establish and maintain a low-pressure environment within the testingchamber 106. The pressure regulation interface 114 can facilitate maintaining thelow-pressure environment within the testing chamber 106 in a range of about 10-3to 10-4 Torr.

[0054] In an embodiment, the device 100 can include one or more electricalinterfaces 110 provided at a top surface of the testing chamber 106, to facilitateconnection of the device 100 to an electrochemical workstation 118 forelectrochemical analysis. These electrical interfaces 110 can be connected topositive and negative terminals of the coin cell, allowing accurate measurement ofelectrochemical parameters such as voltage, current, capacity, internal resistance,and state-of-charge. In some embodiments, the electrical interfaces 110 can includespring-loaded contacts, conductive pins, or screw terminals, without anylimitations. The terminals can be connected with the electrical interfaces 110 at thetop surface of the testing chamber 106, facilitating easy connection anddisconnection of the coin cell without compromising the controlled environmentalconditions within the testing chamber 106.

[0055] The configuration ensures that electrochemical measurements can beperformed simultaneously with temperature, humidity, and other environmentalmonitoring, enabling researchers to correlate thermal and electrochemicalbehaviour under controlled conditions. This arrangement provides a robust,reproducible, and accurate testing setup for evaluating the performance of the coincell.

[0056] Referring to FIG. 2, an exemplary flow diagram of a proposed method 200for performance testing of at least one rechargeable battery 101. At step 202, thedisclosed method 200 includes placing the at least one rechargeable battery 101 ona base 102 associated with a device 100.

[0057] At step 204, the method 200 can include engaging the base 102 with a cap104 defining a testing chamber 106 therebetween, where the cap 104 is adapted toseal the testing chamber 106 and maintain a controlled environment within thetesting chamber 106.

[0058] At step 206, the method 200 can include evacuating the testing chamber 106through a pressure regulation interface 114 to maintain a low-pressure environmentwithin the testing chamber 106 in a range of about 10-3 to 10-4 Torr. The pressureregulation interface114 is provided at a side surface of the testing chamber 106.

[0059] At step 208, the method 200 can include connecting a sensing unit 109 anda thermal regulation unit 108 to corresponding connection points 120, 124. At step210, the method 200 can include regulating a temperature of the testing chamber106 via a heater associated with the thermal regulation unit 108 and a feedback fromthe sensing unit 109.

[0060] Further, at step 212, the method 200 can include connecting terminals of theat least one rechargeable battery 101 to an electrochemical workstation 118 forelectrochemical analysis, through one or more electrical interfaces 110 provided ata top surface of the testing chamber 106.

[0061] Furthermore, at step 214, the method 200 can include monitoring, via thesensing unit 109, one or more operating parameters during the electrochemicalanalysis. At step 216, the method 200 can include transmitting, the monitoredparameters to a user interface 126, thereby allowing analysis of the at least one coincell under variable temperature and pressure conditions.

[0062] Referring to FIG. 3, shows result data graph 300 plotted for ElectrochemicalImpedance Spectroscopy (EIS) of Li-ion coin cell. The EIS of a lithium-ion coincell was measured using a Biologic VMP3 potentiostat over a frequency range of1 MHz to 100 mHz. In the resulting EIS data, Z' and Z" represent real (resistive)and imaginary (capacitive) components of the impedance, respectively. Analysis ofthe EIS results demonstrates that a resistance of the coin cell decreases withincreasing temperature, indicating that thermal activation facilitates a reduction ininterfacial resistance. This observed decrease in the impedance suggests that thecoin cell undergoes enhanced ion transport and charge transfer kinetics at elevatedtemperatures, which may be attributed to melting or softening of interfacial layerswithin the cell. The ability of the device 100 to precisely control and monitortemperature within the testing chamber 106 enables systematic study oftemperature-dependent electrochemical behaviour, including variations in internalresistance, interfacial properties, and charge transfer mechanisms. Such controlledEIS measurements provide reliable and reproducible insights into the performancecharacteristics of rechargeable coin cells under thermal stress.

[0063] A person skilled in the art would appreciate that the proposed device 100and method 200 for performance testing of at least one rechargeable battery 101such as a coin cell are not limited to the specific embodiments described herein.The device 100 and method 200 can be adapted and applied to a wide range ofrechargeable batteries, including lithium-ion, lithium-polymer, or other coin cellconfigurations. The design of the testing chamber 106, including the base 102, cap104, thermal regulation unit 108, sensing unit 109, and electrical interfaces 110,provides a controlled environment for electrochemical analysis under variabletemperature, pressure, and humidity conditions.

[0064] Furthermore, the skilled person would understand that modifications andvariations, such as alternative materials, sensor types, heater configurations, orinterface arrangements, can be implemented without departing from the scope ofthe invention, enabling flexible and reliable testing of batteries in both research andindustrial contexts. The combination of real-time monitoring, environmentalcontrol, and electrical connectivity ensures accurate, reproducible, and convenientevaluation of battery performance under diverse operating conditions.

[0065] If the specification states a component or feature "may", "can", "could", or"might" be included or have a characteristic, that particular component or featureis not required to be included or have the characteristic.

[0066] It will be apparent to those skilled in the art that the device 100 and method200 of the disclosure may be provided using some or all of the mentioned featuresand components without departing from the scope of the present disclosure. Whilevarious embodiments of the present disclosure have been illustrated and describedherein, it will be clear that the disclosure is not limited to these embodiments only.Numerous modifications, changes, variations, substitutions, and equivalents will beapparent to those skilled in the art, without departing from the scope of thedisclosure, as described in the claims.ADVANTAGES OF THE PRESENT DISCLOSURE

[0067] The present invention provides a portable device and method forperformance testing of at least one rechargeable battery.

[0068] The present invention develops a portable, compact, and cost-effective unitcapable of real-time temperature and humidity monitoring during electrochemicaltesting of rechargeable coin cell, including both conventional and solid-state types.

[0069] The present invention provides a compact and integrated device capable ofaccurately controlling and monitoring temperature, humidity, and testing durationduring electrochemical evaluation of the coin cell.

[0070] The present invention provides a device designed to maintain low-pressureconditions ranging from 10-3 to 10-4 Torr, thereby minimizing environmentalinterference and ensuring stable and reproducible testing conditions.

[0071] The present invention ensures complete compatibility of the device with standard electrochemical workstations, enabling seamless in situ electrochemical measurements without modification to existing laboratory infrastructure.

[0072] The present invention enables real-time data acquisition, logging, and display, allowing continuous observation of temperature, humidity, and time parameters during testing.

[0073] The present invention ensures durability, thermal insulation, and chemical safety of the device under varying test conditions.

[0074] The present invention provides a versatile and precise testing platform that facilitates temperature-dependent electrochemical studies across a broad range, from room temperature up to 120 °C, with a temperature control precision of ±1 °C.

Claims

1. A portable device (100) for performance testing of at least one rechargeable battery (101), wherein the device (100) comprising: a base (102) adapted to secure the at least one rechargeable battery (101) during performance testing; a cap (104) engageble with the base (102) defining a testing chamber (106) therebetween, wherein the cap (104) is adapted to seal the testing chamber (106) and maintain a controlled environment within the testing chamber (106); a thermal regulation unit (108) operatively coupled to the testing chamber (106), wherein the thermal regulation unit (108) is configured to heat or cool the at least one rechargeable battery (101); and a sensing unit (109) operatively coupled to the thermal regulation unit (108), wherein the sensing unit (109) is configured to continuously monitor and transmit one or more operational parameters to a user interface (126), to allow analysis of the at least one rechargeable battery (101) under variable temperature and pressure conditions.

2. The device (100) as claimed in claim 1, wherein the base (102) is made of a thermally stable and electrically conductive material capable of withstanding temperature up to 200 °C.

3. The device (100) as claimed in claim 1, comprises one or more electrical interfaces (110) provided at a top surface of the testing chamber (106), to facilitate connection of the device (100) to an electrochemical workstation (118) for electrochemical analysis.

4. The device (100) as claimed in claim 1, wherein the sensing unit (109) is operatively coupled to the testing chamber (106) via a first connection point (120) provided at a side surface of the testing chamber (106).

5. The device (100) as claimed in claim 4, wherein the sensing unit (109) comprises one or more thermocouples configured for sensing a temperature of the testing chamber (106) during the performance testing, and connected to the testing chamber (106) via a second connection point (122).

6. The device (100) as claimed in claim 1, wherein the sensing unit (109) comprises a digital display (112) for real-time visualization of the one or more operation parameters.

7. The device (100) as claimed in claim 1, wherein the one or more operating parameters comprise: the temperature data, a humidity data, and a time data.

8. The device (100) as claimed in claim 1, comprises a pressure regulation interface (114) configured at the side surface of the testing chamber (106), and connected to a vacuum pump (116), wherein the pressure regulation interface (114) is configured to establish and maintain a low-pressure environment within the testing chamber (106).

9. The device (100) as claimed in claim 8, wherein the pressure regulation interface (114) facilitates maintaining the low-pressure environment within the testing chamber (106) in a range of about 10-3 to 10-4 Torr.

10. The device (100) as claimed in claim 1, wherein the thermal regulation unit (108) regulates the temperature of the testing chamber (106) using a heater and a feedback from the sensing unit (109).

11. The device (100) as claimed in claim 1, wherein the cap (104) is made of a non-conductive, heat-resistant polymer selected from a group consisting of: Polyether Ether Ketone (PEEK) and polytetrafluoroethylene.

12. The device (100) as claimed in claim 1, wherein the at least one rechargeable battery (101) is one or more of: a lithium battery, and a coin cell.

13. A method (200) for performance testing of at least one rechargeable battery (101), the method (200) comprising: placing (202) the at least one rechargeable battery (101) on a base (102) associated with a device (100); engaging (204) the base (102) with a cap (104) defining a testing chamber (106) therebetween, wherein the cap (104) is adapted to seal the testing chamber (106) and maintain a controlled environment within the testing chamber (106); evacuating (206) the testing chamber (106) through a pressure regulation interface (114) to maintain a low-pressure environment within the testing chamber (106) in a range of about 10-3 to 10-4 Torr, wherein the pressure regulation interface (114) is provided at a side surface of the testing chamber (106); connecting (208) a sensing unit (109) and a thermal regulation unit (108) to corresponding connection points (120, 124); regulating (210) a temperature of the testing chamber (106) via a heater associated with the thermal regulation unit (108) and a feedback from the sensing unit (109); connecting (212) terminals of the at least one rechargeable battery (101) to an electrochemical workstation (118) for electrochemical analysis, through one or more electrical interfaces (110) provided at a top surface of the testing chamber (106); monitoring (214), via the sensing unit (109), one or more operating parameters during the electrochemical analysis; and transmitting (216), the monitored parameters to a user interface (126), thereby allowing analysis of the at least one coin cell under variable temperature and pressure conditions.