493results about "Cell/batteries leak testing" patented technology

A method for a tightness test of a test object filled with a liquid, said test object having an internal pressure which is lower than atmospheric pressure, comprising the following steps: inserting the test object into a test chamber, evacuating the test chamber to a pressure which is lower than the internal pressure inside the test object, drawing off the test chamber residual gas components together with gas components desorbing from a wall of the test chamber and parts of the liquid escaping from the test object through a leak in the latter without any carrier gas being fed to the test chamber from outside, transporting the drawn-off residual gas components together with the parts of the liquid escaped from the test object to a detector, and detecting parts of the liquid escaped through a leak in the test object by means of a detector.

An energy storage control system includes a plurality of energy storage modules and a plurality of control apparatuses in one-to-one correspondence with the plurality of energy storage modules, where each control apparatus is connected to the corresponding energy storage module, and the energy storage module includes a battery unit and a power unit, the battery unit including at least one battery group. The control apparatus includes a sub-module controller and at least one battery management system in one-to-one correspondence with the at least one battery group, where each battery management system is connected to the corresponding battery group and the sub-module controller, and the sub-module controller is connected to the power unit.

The invention belongs to the technical field of battery production, and particularly relates to a battery production device, battery production equipment and a battery production method.The battery production device comprises a rack, a moving mechanism and a cover, the moving mechanism is connected with the rack and provided with a first station, and the moving mechanism is used for moving a first supporting cup to the first station; the first supporting cup is provided with a first mounting cavity for accommodating a battery; the cover body is used for being sealed and covered with the first supporting cup located at the first station so as to seal the first mounting cavity. The moving mechanism does not need to take the battery out of the supporting cup, movement actions of the mechanism are reduced, operation actions are simplified, the production efficiency of the battery is improved, and then the requirement for high-speed manufacturing of the battery is met.

A gas detection apparatus for cell module assemblies accurately and rapidly detects a damaged cell of a cell module assembly and the damaged position of the damaged cell. The gas detection apparatus includes a gas detection chamber configured to receive a cell module assembly; and a sliding die configured to be movable to the lower part of the gas detection chamber in the state in which the cell module assembly is disposed at the upper end thereof. The gas detection apparatus further includes a gas sensor provided in the gas detection chamber, the gas sensor including a plurality of gas sensors disposed so as to correspond to positions of cells of the cell module assembly. A gas detection method for cell module assemblies uses the gas detection apparatus for cell module assemblies.

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.

The invention relates to the technical field of power supply structures, in particular to a mining flame-proof power supply assembly which comprises a flame-proof box composed of a box body and a box cover, a plurality of flame-proof chambers arranged in the box body and battery pieces installed in the flame-proof chambers. By adopting a mode of separating a plurality of battery pieces, independent explosion-proof processing can be performed on each battery piece, so that mutual interference of the plurality of battery pieces is avoided, even if one battery piece explodes, other battery pieces are not influenced, property loss is reduced, explosive power is reduced, explosion isolation work is simpler, and the explosion isolation efficiency is improved. Meanwhile, by means of the mode that the control unit is disconnected with the battery pieces, explosion can be effectively avoided, and the working effects of explosion prevention and explosion interference are achieved.

A leakage electrolyte solution detection device includes a hyperspectral imaging device, an image extractor, and a determination unit. The hyperspectral imaging device includes an optical unit that collects reflected light by scanning a rechargeable battery on which the electrolyte solution injection process has been completed, a dispersive element that disperses light processed by the optical unit, and an image sensor that converts the light dispersed by the dispersive element into an electric signal, and acquires a hyperspectral image of a rechargeable battery. The image extractor extracts an image of a band related to a characteristic wavelength of an electrolyte solution from the hyperspectral image. The determination unit determines a presence or absence of a leakage electrolyte solution by analyzing the image extracted by the image extractor.

The present disclosure relates to the field of battery technology, and discloses battery test tooling, and a use method and a control method for battery test tooling. The battery test tooling can improve the versatility of the battery test tooling. The battery test tooling comprises: a bracket, at least two sets of driving assemblies, and pressing members, wherein the driving assemblies are mounted on the bracket; and each set of driving assembly is provided with the pressing member, a pressing face on the pressing member that is away from the bracket being used to abut against a battery to be tested; and each of the pressing members is movable in a direction away from or approaching the bracket under the drive of the driving assembly. The battery test tooling provided in the present application is used to test the battery to be tested.

The present disclosure includes: a plurality of battery cells; an insertion member located between the plurality of battery cells; an inflow port formed on one side of the insertion member; and a cover member that covers the plurality of battery cells and the insertion member, the insertion member being capable of expanding when a fluid is injected into the insertion member through the inflow port.

A battery housing body 1 includes: a housing 11 which has an intake port 11a and an exhaust port 11b and houses at least one battery cell 2; a blowing part 14 which generates a flow of air from the intake port 11a to the exhaust port 11b inside the housing 11; and an active gas removal part 15 which removes active gas generated from at least one battery cell 2 and discharged from the exhaust port 11b by a flow of air.

Provided is a pressing apparatus for a battery cell, the apparatus including: a first plate and a third plate spaced apart from each other by a predetermined distance; a second plate movably disposed between the first plate and the third plate; and a pressure indicator changing color based on a pressure change in the battery cell disposed between the second plate and the third plate, wherein the battery cell is disposed between the pressure indicator and the third plate, and the color change of the pressure indicator is visually determined from above the first plate.

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 determination system (1) includes a sensor (22) configured to measure physical properties of a target battery (41) that is a battery installed in a vehicle (40), and an information processing apparatus (10) communicably connected to the sensor (22), the information processing apparatus (10) including a controller (11). The controller (11) acquires vehicle identification information that identifies the vehicle (40), acquires first battery identification information that identifies a battery corresponding to the acquired vehicle identification information, acquires the physical properties of the target battery (41) as measured by the sensor (22), acquires second battery identification information that identifies a battery corresponding to the acquired physical properties, compares the first battery identification information with the second battery identification information to determine authenticity of the target battery installed in the vehicle (40), and outputs the result of determination of the authenticity of the target battery.

The invention relates to the technical field of electric energy storage, and discloses a liquid inlet detection structure and a battery pack, and the liquid inlet detection structure comprises a battery box body which is provided with an electrical cabin; the insulating base is mounted and fixed in the electrical cabin; wherein the insulating base is provided with a liquid storage cavity and a liquid inlet hole for communicating the liquid storage cavity to the electrical cabin; at least one electrified conductor extends into the liquid storage cavity along the Z direction, and an interval space is reserved between the electrified conductor and the cavity bottom of the liquid storage cavity; when the liquid level in the liquid storage cavity is lower than the bottom surface of the electrified conductor, the electrified conductor and the battery box body are in an open circuit state; when the liquid level in the liquid storage cavity is higher than the bottom surface of the electrified conductor, the electrified conductor and the battery box body are in a closed state; and the detection circuit is electrically connected with the battery box body and is used for detecting the electrified state of the battery box body. According to the liquid inlet detection structure and the battery pack provided by the invention, the problem that liquid inlet detection cannot be performed on the existing battery pack can be effectively solved.

An aspect of the present disclosure includes a battery module including a detection unit configured to detect leakage of an electrolyte from a battery cell, wherein the battery cell is a pouch-shaped battery, and wherein the detection unit is disposed at a lower end of a perimeter of a vertical plate comprising a busbar configured to allow an electrode of the battery cell to be electrically coupled thereto.

The disclosure provides a method, device and system for airtightness testing of a battery pack and a battery pack. The method for airtightness testing includes: placing a gas source device in a battery pack; sealing a case of the battery pack; detecting, in response to meeting a preset condition, concentration of a source gas in the battery pack, and determining whether the battery pack meets the airtightness standard. The system for airtightness testing includes a processor, a gas source device, a gas sensor, a first heating assembly used to heat a battery cell, and a second heating assembly used to heat the source gas. A battery management system can obtain a more accurate airtightness result by detecting the concentration of the source gas.

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.

The subject matter relates to a leakage inspection device, which comprises a sealing box, a first inspecting component and a second inspecting component. The sealing box is provided with a sealing cavity for accommodating a workpiece; both the first inspecting component and the second inspecting component comprise a communicating state, an inspecting state, and a discharging state. The battery is placed inside the sealing cavity: firstly, switching the first inspecting component to the communicating state, switching the second inspecting component to the discharging state, vacuumizing the sealing cavity by the gas extracting device, and then switching the first inspecting component to the inspecting state to detect whether there is volatile gas in the sealing cavity, so as to determine whether the battery leaks.

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 leak detection system for a battery enclosure of a rechargeable energy storage system, battery cell, battery module, and / or battery pack includes a gas delivery system configured to selectively deliver a trace gas to the battery enclosure. A primary optical gas imaging sensor is configured to generate images of the battery enclosure surface after the gas delivery system delivers the trace gas. These images are used to selectively detect a gas cloud adjacent to the battery enclosure surface. The gas cloud is then used to pinpoint the location of a gas leak on the battery enclosure surface.

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.

An alert system for an electronic housing, including: a gas property sensor, wherein a processor is configured to receive gas property data from the gas property sensor, and configured to determine a property of a battery included in the electronic housing; a degassing unit for attaching to the electronic housing and configured to enable passage of gases and to prevent passage of liquids and solids, the gas property sensor being attached to the degassing unit at an inner side. A degassing unit comprising a base comprising an attachment means for fluid-tightly attaching to a venting opening of the electronic housing and an opening covered by a semipermeable membrane thereby forming a gas passage; a sensor module including a gas property sensor, the sensor module attachable to the base on an inner side of the base, the sensor module extending away from the semipermeable membrane towards a direction substantially perpendicular to the semipermeable membrane.

To provide an inspection method of a battery, capable of determining the presence / absence of a short circuit with high accuracy.SOLUTION: An inspection method of a battery, includes: an electrode assembly preparation step; an electrolyte liquid inspection step; a sealing step; and a short circuit determination step. An electrode assembly includes a non-facing region other than a region where a positive electrode active material layer and a negative electrode active material layer face each other. The short circuit determination step is a step where the presence / absence of the short circuit are determined by at least one method of the following methods (i) and (ii) before an initial charging. (i) a voltage of a power generation unit is measured under an atmospheric pressure, and when a measurement value of the voltage of the power generation unit is 0 V, it is determined that the short circuit occurs in the power generation unit. In the case where (ii) the voltage of the battery is measured under the atmospheric pressure, and the measurement value of the voltage of the battery is lower than a reference value obtained by multiplying an open circuit voltage of the power generation unit that is specified to a material of the positive electrode active material layer and a material of the negative electrode active material layer by the number of the power generation unit included in the battery, it is determined that the short circuit occurs in the battery.SELECTED DRAWING: Figure 1

The present disclosure relates to the field of battery technology, and discloses battery test tooling, and a use method and a control method for battery test tooling. The battery test tooling can improve the versatility of the battery test tooling. The battery test tooling comprises: a bracket, at least two sets of driving assemblies, and pressing members, wherein the driving assemblies are mounted on the bracket; and each set of driving assembly is provided with the pressing member, a pressing face on the pressing member that is away from the bracket being used to abut against a battery to be tested; and each of the pressing members is movable in a direction away from or approaching the bracket under the drive of the driving assembly. The battery test tooling provided in the present application is used to test the battery to be tested.