300results about "Cell/batteries leak testing" patented technology

An inspection method for a lithium secondary battery can improve the reliability, accuracy, and reproducibility of inspection results by advancing a learning of an artificial neural network according to one or more divided regions of one or more surfaces of the lithium secondary battery and one or more types of defects occurring in each region.

A coolant leak detection and mitigation system for a rechargeable energy storage system having multiple battery cells arranged in individual battery modules includes a cooling system having a main coolant loop and multiple parallel coolant branches. Each coolant branch adjusts the temperature of one battery module using a portion of coolant from the main coolant loop. The cooling system also has flow-valve(s) for regulating and distributing the coolant from the main coolant loop across the coolant branches. An electronic controller is configured to monitor the cooling system for coolant loss and, in response to an indication of coolant loss, assess each coolant branch for a coolant leak. The controller is also configured to identify a coolant branch having a coolant leak and shut off, via the flow-valve(s), coolant flow into the coolant branch having the coolant leak.

A battery case analyzing apparatus includes a sealing portion which covers an injection hole formed on an upper side of a battery case. The sealing portion includes a lower side contacting the upper side of the battery case, a gas injection passage, and a vacuum forming passage formed in the sealing portion. The apparatus includes a gas injection line which is connected to an inlet of the gas injection passage formed on an upper side of the sealing portion, a vacuum forming line which is connected to an outlet of the vacuum forming passage formed on the upper side of the sealing portion, a gas supply portion configured to inject gas into the battery case through the gas injection line, and a vacuum pump which is connected to the vacuum forming line to form a vacuum in a vacuum forming groove formed on the lower side of the sealing portion.

A method for inspecting a pouch battery cell for liquid leakage, the method including bringing a first electrolyte reaction sheet into contact with a top surface of the pouch battery cell, visually inspecting a change in a color of the first electrolyte reaction sheet, bringing a second electrolyte reaction sheet into contact with a bottom surface of the pouch battery cell, and visually inspecting a change in a color of the second electrolyte reaction sheet.

A battery case leak testing device includes a housing having a testing port. A pump is in fluid communication with the testing port and is configured to generate a prescribed pressure at the testing port. A pressure sensor is in fluid communication with the testing port to measure fluid pressure at the testing port. A controller is in operative communication with the pump and the pressure sensor, and is configured to facilitate operation of the pump in a first mode and a second mode. In the first mode, the pump operates to generate a first prescribed pressure at the testing port. In the second mode, the pump operates to generate a second prescribed pressure at the testing port. The controller transitions the pump from the first mode to the second mode when the pressure sensor measures a prescribed pressure characteristic when the pump is operating in the first mode.

Readings may be received from a chemical sensor disposed proximate to a battery within a housing of a smart-home device. The readings from the chemical sensor may be processed to determine whether a chemical associated with an internal environment of the battery is present inside the smart-home device. A determination may then be made as to whether the battery is damaged based on whether the chemical is present inside the smart-home device. Alternatively, the device may determine that the chemical originates from outside of the housing of the device. A sequence of mitigation actions may then be executed to remedy the faulty battery or improve the indoor air quality.

A method and system for detecting the integrity of a high-voltage (HV) battery enclosure. The system uses sensors located within the battery enclosure to generate pressure and temperature sensor data. The system analyzes these data to detect any lack of integrity in the enclosure, such as leaks or breaches, which could compromise the battery's performance and safety. Upon detecting a potential integrity issue, the system generates an alert.

Presented are smart testing systems for detecting leaks in electrochemical devices, methods for making / using such testing systems, and memory-stored instructions for automating operation of such systems. A method of detecting a leak in an electrochemical device includes positioning a temperature-controlled (TC) screen with an electrothermal device at a predefined distance from an infrared camera to define therebetween a test envelope. A testing system controller commands the electrothermal device to modify the TC screen's operating temperature to a predefined screen testing temperature. After positioning an electrochemical device in the test envelope, between the TC screen and infrared camera, the infrared camera captures infrared images of the electrochemical device within the test envelope, showing the device's housing located in front of the TC screen. The system controller then analyzes the captured infrared images of the electrochemical device to determine if a gas leak is present in the device housing.

A computer-implemented method for controlling an energy storage system is disclosed. The method may comprise: Monitoring the energy storage system for state of charge anomalies, wherein the energy storage system comprises a plurality of battery units. Determining, in response to detecting a state of charge anomaly in at least one battery unit within the plurality of battery units, a cause for the state of charge anomaly. Controlling, based on the determined cause, the at least one battery unit.

An electric vehicle battery test vessel, includes a first housing portion configured to securely receive a battery of an electric vehicle, wherein the battery in contained in a sealed battery casing. A second housing portion is arranged to seal the storage battery in the first housing portion, and selectively open whereby the battery can be removed from or placed into the first housing portion. A sealing mechanism is configured to seal the first housing portion to the second housing portion;. A differential pressure source is arranged to create a pressure differential between an external pressure on an exterior of the battery casing and an internal pressure on an interior of the storage battery casing. A pressure sensor measures at least one of the external and internal pressures and monitors for pressure changes indicative of a leak in the battery casing.

According to the energy storage system, a detection circuit can be configured for each battery pack in the system, and the detection circuit is used for detecting the insulation resistance between each battery pack and a protection ground wire PE and can upload the insulation resistance to a control center of the energy storage system. And the control center can be used for detecting and positioning the liquid leakage problem of the battery pack in time when the insulation resistance is increased abnormally.

A coolant leak detection and mitigation system for a rechargeable energy storage system with multiple battery cells arranged in individual battery modules comprises a cooling system with a main coolant circuit and several parallel coolant branches. Each coolant branch adjusts the temperature of a battery module by using a portion of the coolant from the main coolant circuit. The cooling system also has one or more flow valves to regulate and distribute the coolant from the main coolant circuit to the coolant branches. An electronic control unit is configured to instruct a change in the coolant temperature in the main coolant circuit. The control unit is also configured to monitor the temperature change in each battery module in response to the temperature change in the main coolant circuit.The control unit is also configured to identify a battery module that exhibits a temperature change indicating a coolant leak and to interrupt the coolant flow into the coolant branch of the affected battery module.

Provided is a system for predicting a vent occurrence time of a battery cell, which includes a terrace portion having a sealing portion and provided on at least one side of a pouch type battery case and an electrode lead protruding from an end of the terrace portion, the system including a storage unit for collecting data about vent occurrence times according to widths of a remaining sealing portion, a measurement unit for periodically measuring a width of a remaining sealing portion of the battery cell to be measured, and a determination unit for predicting a vent occurrence time of the battery case to be measured by comparing a measured width of the remaining sealing portion with the collected data.

Provided is a system for predicting a time of occurrence of gas emission of a battery cell including a platform portion having a sealed portion and disposed on at least one side of a pouch-type battery case and an electrode lead protruding from an end of the platform portion, the system including a storage unit for collecting data on a time of occurrence of gas emission according to a width of a remaining sealed portion; a measurement unit for periodically measuring the width of the remaining sealed portion of the battery cell to be measured; and a determination unit for predicting the time of occurrence of gas emission of the battery case to be measured by comparing the measured width of the remaining sealed portion with the collected data.

The present invention relates to a leak detection system (1) for checking the leak-tightness of an object, the system (1) comprising: - a device (5) for pressurising a space; - a first pressure sensor (7) configured to measure the variations in pressure of the pressurised space; - a second pressure sensor (9) configured to measure the variations in ambient pressure, such as atmospheric pressure; - an electronic entity (15) configured to determine a leak F', F" depending on the variations in the pressure ΔΡ in the pressurised space and the variations in the ambient pressure APext, the variations ΔΡ, ΔΡext being measured over a predetermined test time interval W by the first (7) and second sensors (9), respectively.

A battery module according to an embodiment of the present invention includes a battery stack in which a plurality of battery cells including a cathode tab and an anode tab are stacked; a first bus bar assembly including a first bus bar connecting cathode tabs and anode tabs located at one end of the battery stack; and a second bus bar assembly including a second bus bar connecting cathode tabs and anode tabs located at the other end of the battery stack. The first bus bar assembly or the second bus bar assembly may include a venting part including at least one venting knife which protrudes from the first bus bar or the second bus bar toward the battery cell, such that stability of the battery module may be improved.

A hydrogen sulfide detection device comprises a wire electrically connecting a first node and a second node, and a monitoring circuit that monitors a voltage between the first and second nodes. The wire includes a pattern provided on a substrate and composed of a metal that reacts with hydrogen sulfide to corrode, and the pattern includes at least one via. A recessed section is present in a surface of the substrate, and each of the at least one via is exposed to the outside of the substrate through the recessed section.

In a battery pack, a battery monitoring circuit is connected to a battery module including a plurality of battery cells to monitor the battery module. A detection sensor detects electrolyte leakage from the battery module and includes: a first resistor and a second resistor connected in series between a power supply providing a first voltage and a ground terminal; and a variable resistor connected in parallel to the first resistor, the resistance value of which varies according to the electrolyte leakage from the battery module. The detection sensor transmits the voltage at the contact point between the first and second resistors as a sense voltage to an input terminal of the battery monitoring circuit.

Various embodiments of optical sensors, such as optical leakage sensors, are provided. Example embodiments of optical sensors described herein may include an optical prism and / or a microcontroller configured to provide power to a plurality of wires, the optical prism includes a plurality of substantially semi-cylindrical grooves, a plurality of conductive lines disposed within the plurality of substantially semi-cylindrical grooves, wherein the plurality of conductive lines are configured to provide heat to a sensing surface of the optical prism in response to application of power.

A leaking cell detection system according to an embodiment of the present invention may comprise: a gas sensor for generating, using a resistance value varying according to an electrolyte leaking from a battery cell, a measurement value that varies according to a concentration of the leaked electrolyte; and a control unit for calculating a time variation of the measurement value and Bollinger Bands of the time variation, generating a leaking cell determination graph for the battery cell by arranging the time variation, an upper band of the Bollinger Bands, and a lower band of the Bollinger Bands in chronological order, and determining whether the battery cell is a leaking cell, on the basis of whether the leaking cell determination graph includes a first point at which the time variation falls below the lower band of the Bollinger Bands and a second point at which the time variation rises above the upper band of the Bollinger Bands.

The present disclosure relates to a battery monitoring system for a vehicle, comprising a battery having one or more cells, a housing wherein the battery is arranged, the housing has an atmosphere, wherein a ventilation valve is arranged at the housing for controlling the atmosphere in the housing, the ventilation valve comprises a first port and a second port, the first port being in fluid communication with the housing, the second port is in fluid communication with a closed expansion space arranged outside the housing, wherein a gas sensor is arranged at the atmosphere, at the ventilation valve, and / or at the closed expansion space, the gas sensor is configured to detect a gas leaking or emitting from the battery.

The present invention relates to a washer for a secondary battery including a film layer and an adhesive layer disposed on at least one surface of the film layer, wherein the adhesive layer includes an adhesive component and an indicator component, and the indicator component is fat-soluble, a secondary battery including the same, and a method for manufacturing the washer.

The invention relates to a method for battery leak detection. The present invention relates in particular to a method for detecting electrolyte leaks in a battery in addition to quantifying and locating said leaks. The invention also relates to a method for battery leak detection by means of the leak detection tag. The above mentioned method relates to a self-powered leak detection method, wherein the power of the method is driven by an electrolyte leak and at least two electrodes of a leak detection tag.

A battery system includes accommodation chambers on top of each other in a housing with side portions, each one of the accommodation chambers including cells and a cooling plate; a cooling manifold inside the housing including a vertically extending portion that vertically extends along a side portion of the housing, the cooling manifold being connected to each of the cooling plates; a leakage protection member enclosing at least a portion of the cooling manifold, the leakage protection member extending toward a bottom portion of the housing along the cooling manifold such that coolant that is leaked from the cooling manifold is drained through the leakage protection member toward the bottom portion of the housing; and a detection unit including at least one leakage sensor positioned at the bottom portion of the housing and configured to detect coolant drained toward the bottom portion by the leakage protection member.

The present application discloses a helium detection system and method. A control device controls a loading manipulator to transfer a battery cell to a first main detection chamber and open a corresponding first vacuum valve, evacuates the first main detection chamber through a first vacuum pump, closes the first vacuum valve after the evacuation is completed, and performs major leak detection on the battery cell through a first negative pressure gauge; in a case where the major leak detection is passed, controls a second vacuum valve to open, to start a second vacuum pump to evacuate the battery cell, and after the evacuation, controls a first helium injection valve of a helium pipeline to open, to inject helium into the battery cell, and closes the first helium injection valve after the helium injection is completed, and performs helium detection on the battery cell through a first helium detector, thereby completing the main detection for the battery cell; whereas in a case where the major leak detection is failed, opens a vacuum breaking valve, and breaks the vacuum of the battery cell and the first main detection chamber through an atmospheric pipeline; and controls an unloading manipulator to transfer the battery cell to a re-detection chamber for re-detection, thereby capable of improving the utilization rate of vacuum resources and helium resources and improving the detection efficiency.

An automated system to provide gas leak detection during battery manufacturing includes a battery system. A video of a gas leak occurring during a manufacturing stage of the battery system includes the gas leak as a gas vapor. A location of the gas leak is determined. A leak intensity value of the gas leak is identified to determine if the gas leak is minor and is less than or within a predetermined window or threshold permitting acceptance of the gas leak without repair, or if the gas leak requires further action including repair of the battery system.

A coolant leak detection and mitigation system for a multi-cell rechargeable energy storage system (RESS) with a multitude of battery cells arranged in individual battery modules includes a cooling system. The cooling system has a main coolant circuit in which the coolant circulates and a multitude of coolant branches arranged in parallel. Each coolant branch receives a portion of the coolant from the main coolant circuit to dissipate heat energy from a battery module. The cooling system also has one or more flow valves to regulate and distribute the coolant from the main coolant circuit to the coolant branches. The leak detection and mitigation system also includes an electronic control unit configured to monitor the coolant branches for coolant leaks using coolant leak detection methods.The control unit is also configured to identify a coolant branch with a coolant leak and to shut off the flow of coolant into the coolant branch with the coolant leak via the flow valve(s).

The presented invention relates to a device (100) for detecting the bursting behavior of a battery cell (101), wherein the device (100) comprises: - an indenter (103), - a number of sensors (105), wherein the indenter (103) comprises a contact surface (107) configured to deform the battery cell (101) in a contact area (109) until it bursts, wherein the number of sensors (105) is configured to detect the bursting behavior of the battery cell (101) in the contact area (109).

The invention discloses a lithium battery thermal runaway early detection device and method based on gas spectrum analysis, and relates to the technical field of thermal runaway detection.A miniature gas sampling channel is arranged in a lithium battery pack or near a single battery cell, gas drainage is configured, gas released in the battery operation process is sampled, and gas sample data is obtained; according to the method, a multi-stage gas spectral analysis process is constructed, multi-dimensional spectral characteristics such as spectral peak intensity, spectral position offset and full width at half maximum are extracted from trace release gas collected in the running process of the lithium battery, a thermal runaway risk vector is constructed, and the thermal runaway risk vector is input into a thermal runaway recognition model MOD for real-time risk judgment. The early thermal chemical reaction process in the battery is effectively identified, the pre-judgment of the thermal runaway trend is completed in advance, the early warning of the thermal runaway state of the lithium battery is realized, the preposition of the system response and the safety protection level are improved, and the overall safety performance and reliability of the battery pack are improved.

The present disclosure refers to a battery system (100) a plurality of accommodation chambers (26) disposed on top each other in a housing (20) with a plurality of side portions (21, 22, 23), wherein each accommodation chamber (26) includes a plurality of battery cells (29) and a cooling plate (28). A cooling manifold (30) is provided inside the housing (20) and including a vertically extending portion (32) which vertically extends along a side portion (21, ..., 23) of the housing (20), wherein the cooling manifold (30) is connected to each of the plurality of cooling plates (28). The battery system (100) further includes a leakage protection member (40) enclosing at least a portion of the cooling manifold (30), wherein the leakage protection member (40) extends toward a bottom portion (24) of the housing (20) along the cooling manifold (30) such that coolant that is leaked from the cooling manifold (30) is drained toward the bottom portion (24) of the housing (20). Further, a detection unit (50) includes at least one leakage sensor (60) positioned at the bottom portion (24) of the housing (20) and configured to detect coolant drained toward the bottom portion (24) by the leakage protection member (40).