22 results about "Cell swelling" patented technology

The application discloses a kind of fruit hydraulic conductivity and biomechanical parameter measurement method and device;The measurement method includes the following steps: step 1: sampling;Step 2: measure initial fruit water potential Ψ f0 With pressure chamber;Step 3: do fruit water absorption experiment;Step 4: measure fruit pressure-volume curve (P-V curve);Step 5: measure fruit stalk + calyx hydraulic resistance and fruit stalk hydraulic resistance, respectively Rc And Rs;Step 6: data processing.The fruit hydraulic conductivity and biomechanical parameter measurement method and device, the hydraulic conductivity affecting fruit water transport and the biomechanical parameters such as volume elastic modulus, cell wall coefficient of extension, critical point swelling pressure and other influencing factors affecting cell elastoplastic deformation are conveniently obtained, which is convenient for studying fruit swelling growth, and helps to deeply understand the physiological mechanism of fruit cell swelling and its response law to changes in different habitat elements.

The invention relates to a lithium battery cycle life prediction method and system. The method comprises the steps of obtaining a first battery design parameter, a material parameter and an empirical parameter of an actually measured lithium battery, constructing an electrochemical-force-side reaction coupling model based on the first battery design parameter, the material parameter and the empirical parameter, and performing parameter optimization processing on the electrochemical-force-side reaction coupling model based on the actually measured parameter of the actually measured lithium battery, diffusion induced stress and macroscopic cell expansion caused by concentration distribution gradient in the active material are fully considered, and meanwhile, a main side reaction model is coupled, so that mechanism interpretation with higher accuracy is realized; the method further comprises the steps of obtaining a second battery design parameter of the target lithium battery, and obtaining a more accurate and reliable cycle life prediction result based on the second battery design parameter and the electrochemistry-force-side reaction coupling model after parameter optimization processing, so as to provide guidance for cell design and development.

The invention provides a microalgae cell swelling inertia screening and impedance detection integrated micro-fluidic device, and relates to the technical field of microalgae cell screening and detection. The microalgae cell swelling inertia screening and impedance detection integrated micro-fluidic device comprises a signal processing unit, the substrate is ITO (Indium Tin Oxide) conductive glass; the main micro-channel is of a micro-channel structure which is formed in a polydimethylsiloxane (PDMS) layer and is bonded on the substrate. According to the invention, the passive sorting module based on the expansion and contraction inertia effect and the differential impedance detection module are integrated in the single micro-fluidic chip, so that the full-process automation of'sample introduction-sorting-detection-output 'is realized. Sample loss, cross contamination and activity damage are avoided, interference of mixed cell populations on subsequent impedance signals is effectively eliminated through pre-sorting, and the accuracy of target microalgae detection is remarkably improved.

This invention provides a battery abnormality detection device that detects cell swelling by measuring fluctuations in the cell's vibration response due to cell swelling and changes in spatial characteristics associated with changes in the spatial volume within the package. [Solution] The battery abnormality detection device comprises a battery 1 containing cells in a package, a vibration source 2 that applies vibration to the battery 1 from outside the battery 1, and a vibration sensor 3 that measures the vibration generated in response to the vibration applied by the vibration source 2. The device determines the state of the battery 1 based on the vibration generated in response to vibration under normal conditions and the vibration measured by the vibration sensor 3.

Cooling compression plate (1) for maintaining an intercellular space (2) in a directly cooled accumulator (3) during cell swelling, comprising at least: - a first exterior wall section (4); - a second exterior wall section (5); and - an intermediate section (6) which extends from a first transition edge (7) with the first outer wall section (4) and a second transition edge (8) with the second outer wall section (5) in a spring space (9) formed between the outer wall sections (4,5); wherein the cooling compression plate (1) is a single piece, and wherein at least one of the outer wall sections (4,5) forms at least one cooling channel (11) with an adjacent cell (12) in an assembled state, and wherein a spring effect can be provided between the first outer wall section (4) and the second outer wall section (5) by means of the intermediate section (6), characterized in that the cooling channel is formed in an outer side of the respective outer wall section, which is a side facing away from the spring chamber.

A cell swelling compensator for a battery unit has resilient elements adapted to be arranged between a first cell stack and a structure of the battery unit such that said cell swelling compensator is arranged between the first cell stack and the structure for exerting a force onto first cell stack for compensating for cell swelling in the first cell stack.

Battery cell stack (20) comprising at least one battery cell (22) in which a cooling plate (28) is arranged on a cell wall (24) which is largely unaffected by cell swelling during charge and discharge cycles and which is free of a vent opening (26).

The invention relates to the technical field of battery packs, in particular to a battery pack lower shell and a battery pack. The lower shell of the battery pack comprises a square shell, at least two longitudinal beams and at least one group of connecting belt components, the square shell is provided with a bottom plate and side walls, a containing cavity is defined by the bottom plate and the side walls, and the longitudinal beams are arranged in the first direction and fixed to the opposite side walls of the containing cavity; the connecting belt assembly is arranged in the second direction, the bottom of the connecting belt assembly is fixedly connected with the bottom plate, and the two ends of the connecting belt assembly are at least fixedly connected with the two longitudinal beams respectively, so that the accommodating cavity is divided into at least two battery cell mounting areas and battery cell expansion is inhibited; wherein the first direction is the length direction of the square shell, and the second direction is the width direction of the square shell; the battery pack lower shell provided by the invention can effectively inhibit battery cell expansion and improve isolation and structural stability between different battery cell mounting areas.

Methods for determining an injury rate (D C ) a battery cell (16) for an electrical energy storage device of a motor vehicle that is at least partially electrically powered by means of an electronic computing device (12), comprising the steps: - Determining the capacity degradation of the battery cell (16) as a function of a force generated due to cell swelling of the battery cell (16); - Determining the state of health (SOH) of the battery cell (16); and - Determining the damage rate (D C ) depending on capacity degradation and state of health (SOH), where the damage rate (D C ) is determined on the basis of a covariance procedure or the damage rate (D C ) based on a derivation using the formula: DC = | d SOHC d ETP | is determined, where D C the damage rate, SOH cthe state of aging and ETP corresponds to an energy flow.

The present disclosure relates to a prismatic cell casing, in particular cell box, for at least partially influencing a, in particular mechanical, deformation of the prismatic cell casing, in particular due to cell swelling, comprising: at least one deformation support structure designed to enable and / or promote deformation, in particular mechanical deformation, at at least one point of the prismatic cell housing.

The present disclosure provides a thermal barrier system for use within a traction battery pack. A thermal barrier system for suppressing thermal energy transfer inside a traction battery pack is provided. An exemplary thermal barrier system may include one or more thermal barrier assemblies disposed between adjacent battery cell packs of a cell stack. Each thermal barrier assembly may include a mica core, a first ceramic foam layer, a second ceramic foam layer, a first glass silicone layer, and a second glass silicone layer. In some embodiments, the thermal barrier system may additionally include one or more cell expansion pad assemblies and / or one or more thermal barriers.

A battery module and an electronic device are provided. The battery module includes a case and a cell. Multiple cells are stacked in the case along a thickness direction. The case includes a base plate, an upper cover, and a side wall. The side wall is formed by enclosing multiple side plates. The side plates include at least one movable plate capable of sliding along a stacking direction of the cells. When the cell swells, an swelling force and an swelling amount of the cell pushes the outermost cell to move toward the stacking direction, so that the movable plate is pushed and slides along with the swelling of the cell, which can reduce the swelling force on the movable plate to effectively reduce the swelling force on the movable plate in an swelling direction of the cell, so as to significantly improve the safety of the battery module.

The invention relates to the field of batteries, in particular to a lithium metal negative plate, a preparation method thereof and a battery, the lithium metal negative plate comprises a metal substrate and a coating arranged on at least one side surface of the metal substrate along the thickness direction; the coating comprises a metal organic framework material; the metal organic framework material comprises a derivative material of PCN-250, and the derivative material of PCN-250 has an ester group azobenzene group. The lithium metal negative plate can adsorb by-products generated by side reaction under the condition that ion transmission is not affected, the lithium metal battery is prevented from generating a large amount of side reaction gas in the later period of circulation, and then the potential safety hazard caused by cell bulging due to gas production is solved.

The invention discloses a method for detecting campylobacter jejuni cell swelling toxin CdtB in food, and provides application of a campylobacter jejuni cell swelling lethal toxin CdtB monoclonal antibody to detection of campylobacter jejuni in food for the first time. The invention aims to establish the detection kit and the detection method based on the campylobacter jejuni cell swelling toxin CdtB monoclonal antibody, and the detection kit and the detection method have relatively strong specificity and sensitivity. The CdtB monoclonal antibody prepared by the invention can be combined with CdtB protein secreted by campylobacter jejuni in food, so that the detection of the campylobacter jejuni is realized. The detection speed is high, semi-quantitative detection can be achieved, the detection sensitivity is high, and the lowest CdtB mass of 0.01 microgram can be detected.

This invention discloses a flexible fabric co-embedded sensing device, its preparation method, and a battery cell expansion monitoring system. The sensing device includes an elastic textile body, a pressure sensing component, a wire assembly, and a flexible circuit board. The elastic textile body is composed of two layers of elastic textile fabric stacked together. The pressure sensing component includes multiple pressure sensors distributed between the two layers of elastic textile fabric according to a matrix coordinate rule. Multiple pressure sensors in the same row are connected in series or parallel with corresponding rows of wire groups. The flexible circuit board is connected to the elastic textile body, and its multiple signal input terminals are electrically connected to multiple leads of the wire assembly. This structural design allows the flexible fabric co-embedded sensing device to flexibly adhere to the surface of a lithium battery cell, accurately sensing local pressure deformation and expansion changes generated during the charging and discharging process of the cell in real time. This provides the battery management system with deformation location and pressure data, enabling online monitoring and safety early warning protection for abnormal cell expansion.

This invention relates to the field of biotechnology, particularly to the field of IPC G01N1, and further to a method for preparing and applying ultrathin cell sections. The method includes the following steps: (1) sample collection; (2) pre-fixation; (3) agar pre-embedding; (4) fixation; (5) dehydration, permeation, and embedding; (6) ultrathin sectioning; and (7) staining. This invention uses tannic acid instead of osmium tetroxide for sample fixation, avoiding the harm of osmium tetroxide to human health and reducing costs. During tannic acid fixation, uranium acetate is added for further fixation, which avoids incomplete cell membranes, prevents the formation of large amounts of cell debris, and prevents cell swelling, further improving the subsequent staining effect, especially suitable for the fixation of CHO cells.

The invention discloses an egg extraction liquid for live pig egg collection and a preparation method of the egg extraction liquid. The egg extraction liquid is prepared from a basic culture medium, an antioxidant system, an osmotic pressure regulator and an energy metabolism accelerant according to the volume ratio of (50-70): (10-20): (5-15): (5-15). The pH value of the egg extraction liquid is 7.2-7.6, and the osmotic pressure of the egg extraction liquid is 280-320 mOsm / kg; the basic culture medium is selected from one or a mixture of more of DMEM / F12, MEM or RPMI 1640, and bovine serum albumin with the mass concentration of 0.1%-0.5% is added. The invention relates to the technical field of safety control. According to the egg extraction liquid for live pig egg collection and the preparation method of the egg extraction liquid, oxidative damage of pig oocytes in the egg collection process can be remarkably reduced by scavenging free radicals and inhibiting lipid peroxidation reaction through the anti-oxidation system, the osmotic pressure of the egg extraction liquid is matched with the physiological environment of the pig oocytes due to the addition of the osmotic pressure regulator, and the egg collection efficiency is improved. The cell swelling or shrinking phenomenon caused by osmotic pressure imbalance is avoided, and the energy supply capacity of the porcine oocytes in the egg collecting process is enhanced.

This application proposes a method, device, equipment, and medium for early warning of battery module and cell expansion. The method includes simultaneously acquiring the surface temperature, composite stress, and voltage signals of the target cell through a flexible circuit board's acquisition terminal; calculating the thermodynamic deformation component based on the surface temperature and pre-stored material thermal expansion coefficients, and performing a differential operation between the composite stress and this component to perform a first-level decoupling, thus removing interference from the physical thermal expansion of the conductive busbar and extracting pure mechanical stress parameters; determining the cell's state characteristics based on the voltage signal, obtaining a reference stress value by calling a preset baseline, comparing the pure mechanical stress with the reference stress to perform a second-level decoupling, thus removing interference from electrochemical expansion during charging and discharging and calculating an abnormal expansion force residual parameter; and performing real-time early warning monitoring of abnormal mechanical expansion states based on this parameter. This invention reduces the synchronization error of multi-dimensional signal acquisition, achieves dual decoupling, and significantly improves the accuracy and timeliness of battery thermal runaway early warning.

The invention, which relates to the technical field of lithium ion battery cell expansion force monitoring and prediction, discloses a non-contact prediction method and system for a cell expansion force based on a pulse neural network, the method comprising: acquiring a cell expansion analog voltage signal collected by a flexible sensor; converting the analog voltage signal into a pulse frequency signal through a Sigmoid function; inputting the pulse frequency signal into a pre-trained pulse neural network model; the system comprises a flexible sensor module, a signal conditioning and pulse coding module, a pulse neural network prediction module and an early warning and communication module, ultra-short-term high-precision non-contact prediction is achieved, the operation power consumption is low, deployment at the edge end of a battery management system is easy, and the method is suitable for popularization and application. The early warning signal can be generated in real time, reliable basis is provided for battery safety management, and the method is suitable for safety protection scenes of the lithium ion battery energy storage system.

The invention provides application of polygonum cuspidatum lung purging decoction in preparation of a medicine for treating sepsis acute respiratory distress syndrome. The rhizoma polygoni cuspidati lung purging decoction compound preparation provided by the invention comprises three more important components in rhizoma polygoni cuspidati, radix et rhizoma rhei and semen armeniacae amarae preparations, the important targets of the preparation for treating sepsis ARDS are AKT1 and TNF, and the active component luteolin in the rhizoma polygoni cuspidati can relieve the number of pseudopod differentiation, cell swelling and cell membrane rupture of human THP-1 cells to a certain extent.

The utility model belongs to the technical field of batteries, and mainly relates to a bayonet structure which comprises a bayonet and a flaring blade hinged with the bayonet through a connecting part, one end of the bayonet along the length direction is used for puncturing the air bag; the flaring blade is provided with a connecting part hinged to the bayonet, and the connecting part is provided with a first blade and a second blade in an extending mode. An obtuse angle is formed between the first blade and the second blade; according to the technical scheme, the bayonet structure is improved, the problem that gas dissipation is blocked is effectively solved, and the gas emission efficiency is remarkably improved; and in the secondary sealing air exhaust stage, the design of the flaring blade can reduce the retention of residual gas in the air bag, so that the battery cell bulging phenomenon caused by the fact that the gas cannot be exhausted in time is avoided, and the safety and the stability of the battery cell are fundamentally improved.

Methods of inhibiting expansion of cerebral contusion, inhibiting secondary hemorrhage and capillary fragmentation in the brain, reducing pericontusional edema and hemorrhage size in the brain, decreasing water content in a CNS tissue, inhibiting disruption of the blood-brain barrier, inhibiting CNS contusion progression and improving post-contusion motor function, inhibiting microvascular impairment caused by endothelial cell swelling and fragmentation, inhibiting extravasation of blood into the brain parenchyma of a subject, inhibiting endothelial cell breakdown in a brain tissue, inhibiting extravasation of endovascular fluids into the brain's interstitium, decreasing vasogenic edema as measured by T2 flair magnetic resonance imaging, and decreasing matrix metalloprotease concentration in a CNS tissue, by administering a SUR1-TRPM4 channel inhibitor alone or in combination with one or more drugs or agents.