164results 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 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.

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.

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.

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.

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.

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 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.

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.

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).

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. The detection sensor detects an electrolyte leaking in the battery module, and includes a first resistor and a second resistor connected in series between a power supply supplying a first voltage and a ground terminal, and a variable resistor connected to the first resistor in parallel and having a resistance that varies depending on the electrolyte leaking in the battery module. The detection sensor transfers, as a sensing voltage, a voltage at a contact between the first resistor and the second resistor to an input terminal of the battery monitoring circuit.

Disclosed are a battery (100), an electronic device and a polarity leading-out method. The battery (100) comprises a casing (10) and an electrode assembly (20) accommodated in the casing (10), the inner surface of the casing (10) being provided with a first welding area (132), and the first welding area (132) being used for being welded and connected to the electrode assembly (20). The first welding area (132) comprises a negative ion organic peak 118, the ion count ratio of the negative ion organic peak 118 being A1%, and A1≤0.5. The casing (10) can be welded to the electrode assembly (20) by means of the first welding area (132), so as to lead out a positive electrode or a negative electrode of the electrode assembly (20). The degree of impurities contained in the first welding area (132) can be defined by the content of an antirust agent component. The first welding area (132) is obtained by performing cleaning on the casing (10), and, during cleaning, the main component obtained after thermal cracking of the antirust agent is triethanolamine, which is corresponding to the organic peak 118. Since the ion count ratio of the negative ion organic peak 118 of the first welding area (132) is A1%, and A1≤0.5, the impurity content is significantly reduced; when the casing (10) and the electrode assembly (20) are welded, explosion point formation can be effectively reduced, thereby reducing the risk of liquid leakage of the battery (100), and improving the safety performance of the battery (100).

A system configured to assess structural integrity of a battery pack component. The system includes: a tub configured to receive the battery pack component therein; a cover configured to sit on the tub and the battery pack component within the tub, and form a seal against both the tub and the battery pack component, thereby defining a reservoir between the tub, the cover, and the battery pack component; a pump configured to pump a gas into the reservoir through an inlet at the tub; and a sensor configured to detect a leak of the gas through the battery pack component from the reservoir, the leak corresponding to an area of the battery pack component having structural irregularities.

The present invention provides a battery cell capable of detecting electrolyte leakage, including: an electrode assembly; an electrolyte; a case 100 accommodating the electrode assembly and injected with the electrolyte, the case 100 comprising a first portion P1 and a second portion P2 spaced apart from each other by a predetermined distance; and a leakage sensor 200 coupled to and installed at the case 100, the leakage sensor 200 detecting the electrolyte leaking to the outside through the first portion P1 and the second portion P2. The leakage sensor 200 may include a conductor 220 surrounding the first portion P1 and the second portion P2 and constituting an electric circuit. At least one of a resistance, a current or a voltage of the electric circuit may change when the leaked electrolyte contacts with the conductor 220. The conductor 220 may include a first conductor 222 surrounding the first portion P1, a second conductor 224 surrounding the second portion P2, and a third conductor 226 connecting the first conductor 222 and the second conductor 224, the first conductor 222, the second conductor 224, and the third conductor 226 constituting the electric circuit.

An end cover assembly, an energy storage device and electricity-consumption equipment. The end cover assembly includes an end plate, a pole and a connecting member. The end plate has a first surface and a second surface disposed opposite to each other along a thickness direction thereof. The end plate further has a first pole hole penetrating the end plate. The pole has a first pole section and a second pole section. An outer circumferential surface of the first pole section is connected with the outer circumferential surface of the second pole section through an annular stepped surface. The first pole section is inserted into the first pole hole. The connecting member is located at a side where the annular stepped surface of the pole is located, and has a second pole hole coaxially arranged with the first pole hole.

The present disclosure relates to a sensor for a battery assembly and a testing method of a battery assembly using the same. A sensor for a battery assembly according to an embodiment of the present disclosure includes a body member having a first opening formed on one surface of the body member, the body member including an accommodation space accommodating at least a part of the battery assembly through the first opening, a sealing member disposed around the accommodation space, the sealing member coming in contact with the battery assembly when at least the part of the battery assembly is accommodated in the accommodation space, and a sensing member formed in the accommodation space and measuring environment data in the accommodation space.

Embodiments of this disclosure disclose an air tightness check method and a test system. The test system includes a control apparatus, a scanning apparatus, a pressing apparatus and a check apparatus. The air tightness check method includes: in response to a battery pack flowing into an air tightness testing station, controlling, by the control apparatus, the scanning apparatus to identify the battery pack to obtain parameter information of the battery pack, where the parameter information of the battery pack represents basic attributes of the battery pack and a position of the battery pack in the air tightness testing station; controlling, by the control apparatus based on the parameter information of the battery pack, the pressing apparatus to press down the battery pack; and controlling, by the control apparatus, the check apparatus to check air tightness of the pressed battery pack.

The disclosed technology relates to a system for positively pressurizing a battery pack when the battery pack is submerged. In some embodiments, during an immersion event, a sensor detects a pressure inside the battery pack to generate a signal indicative of the pressure within the battery pack. The sensor then sends a first signal to the pressure controller. The pressure controller adjusts the pressure inside the battery pack within a range based on the first signal to prevent liquid from entering the battery pack during the immersion event.

A battery system (100) includes a unit cell (10) including a sulfide-based all-solid-state battery, a battery module (200) in which a plurality of the unit cells (10) is stacked between a pair of restraining members (31, 32), an intermediate plate (60) disposed between the stacked unit cells (10), a detection unit configured to detect a load applied to the intermediate plate (60), and an estimation unit (300) configured to estimate generation of hydrogen sulfide in the unit cell (10), based on a change in load applied to the intermediate plate (60).

A leakage detection liquid collector for detecting fluid leakage from a battery module according to the present disclosure includes: a collection unit coupled to the bottom of a battery module and having a downward sloping surface formed toward the central portion to form a collection space where leaked fluid is gathered at the central portion, a support plate provided between the battery model and the collection unit to support the load of the battery module, and a sensing unit provided inside the collection unit to detect the fluid collected in the collection space.

The present invention relates to a leakage detection device and a battery pack comprising same, the leakage detection device comprising: a moisture detection unit to which an absorption member is coupled; a fixing support unit for fixing the moisture detection unit to a battery pack; and an extension unit for fixing the moisture detection unit to the fixing support unit, wherein a lower end of the absorption member extends at least to a lower end of the fixing support unit. Accordingly, even if a small amount of cooling water leaks, the leakage detection device can quickly detect the leakage.

The present disclosure relates to a secondary battery including an electrode assembly made by winding a positive electrode, a separator, and a negative electrode, a battery casing having one surface with an opening, and the other surface having a through-hole, the battery casing having a space in which the electrode assembly is accommodated, an electrode terminal provided to be in contact with the electrode assembly and exposed to the outside through the through-hole, a gasket positioned between the battery casing and the electrode terminal, and a top cap coupled to the opening of one surface of the battery casing, in which first leak detection member is positioned on a surface of the gasket that faces the battery casing.

A battery structure includes a plurality of battery packs, and a fluid storage part disposed at one side of the plurality of battery packs and configured to store an electrically insulative fire extinguishing fluid. Each of the plurality of battery packs includes a plurality of battery cells including electrodes and separators, a casing part defining an internal space configured to accommodate the battery cells, and a piping line connected to one end to the casing part and at another end to the fluid storage part, the piping line having a flow path configured to deliver the fire extinguishing fluid to the casing part.

A system is configured to assess the structural integrity of a battery pack component. The system includes: a tray configured to contain the battery pack component; a cover configured to sit on the tray and the battery pack component within the tray, forming a seal against both the tray and the battery pack component, thus defining a reservoir between the tray, the cover, and the battery pack component; a pump configured to pump gas through an inlet on the tray into the reservoir; and a sensor configured to detect a gas leak through the battery pack component from the reservoir, the leak corresponding to an area of ​​the battery pack component exhibiting structural irregularities.