106 results about "Pouch cell" patented technology

A battery cell is provided that includes a countered pouch form, tailored to match the geometry of the cell, including the tab region. The contoured pouch form provides a precise, conforming seat for the cell and tab region to reduce or mitigate deformation of cracking of layers of the pouched cell, particularly during vacuum sealing of the pouch. By optimizing the pouch form geometry to the shape of the contained stack, the structural integrity and reliability of battery pouch cells is improved.

A battery module according to an embodiment of the present disclosure may include: pouch cells arranged in a first direction, each of the pouch cells including an electrode lead protruding in a second direction perpendicular to the first direction; a module frame configured to accommodate the pouch cells and open in the second direction, the module frame including a top plate positioned above the pouch cells; a vent suppression structure between the pouch cells and the top plate; and a first end plate coupled to the module frame in the second direction and including first vent holes.

The utility model discloses a soft package battery liquid injection rotating platform mechanism which comprises a supporting base, a rotating base is arranged on the supporting base, and a transfer platform is provided with a first clamping mechanism for transversely clamping a soft package battery body in a self-adaptive mode. And a second clamping mechanism for longitudinally clamping a group of soft package battery bodies simultaneously is arranged on the transfer platform. According to the flexible package battery body clamping device, the flexible package battery bodies are placed in the first clamping mechanisms, the first clamping mechanisms can be attached to the outer sides of the flexible package battery bodies in a self-adaptive mode, the flexible package battery bodies are transversely clamped, and when one set of flexible package battery bodies are placed in the multiple sets of first clamping mechanisms, the flexible package battery bodies are clamped. Second clamping mechanisms are attached to the front end and the rear end of a set of soft package battery bodies at the same time, the front end and the rear end of the set of soft package battery bodies are clamped and fixed, shells with the same thickness are arranged on the outer sides of the soft package battery bodies in a sleeving mode, and the soft package battery bodies with different widths are adapted through the thicknesses of grooves formed in the shells in a sleeving mode. The shell is directly attached to the clamping mechanism.

A multilayer composite film for a secondary battery pouch having a storage portion concavely processed on one side to accommodate an electrode assembly therein. The multilayer composite film includes a first outer layer; a second outer layer; a barrier layer; and an inner resin layer, wherein the inner resin layer has a PER (Propylene-Ethylene Rubber) content of 5% or more and 40% or less. The composite film of the pouch cell for secondary batteries according to the present invention secures excellent insulation resistance by improving the residual rate after forming.

This utility model belongs to the field of battery technology and discloses a battery module and battery pack. The battery module includes battery cells, heat sinks, and a pre-tightening assembly, with multiple battery cells arranged sequentially at intervals. Each battery cell has heat sinks attached to two opposite sides in the arrangement direction. The pre-tightening assembly includes an elastic element and a limiting element. The elastic element is connected between the heat sinks on the sides of two adjacent battery cells with an initial pre-tightening force. The expansion of the battery cell causes the elastic element to undergo elastic deformation. The limiting element is used to stop the elastic deformation of the elastic element when it is in a preset deformation position. This battery module can suppress the high expansion problem of pouch cells, avoid abnormal cell deterioration caused by electrode fragmentation and cracking due to expansion, and effectively improve cycle life and safety.

Pouch battery comprising: a battery cell; a packaging film comprising a main body and two fold-edge structures, each connected to two opposing side faces of the main body in a width direction; wherein the main body has a receiving cavity and the battery cell is arranged in the receiving cavity;Each of the fold-edge structures comprises a first fold section, a second fold section, and a third fold section, wherein a first end of the first fold section is connected to a side face of the main body, a second end of the first fold section is connected at a first fold point to a first end of the second fold section, a second end of the second fold section is connected at a second fold point to a first end of the third fold section, the first fold point and the second fold point are arranged between a top and a bottom of the main body in a thickness direction of the battery cell, and a minimum distance between the third fold section and the battery cell in the width direction L is 0.3 mm ≤ L ≤ 2.5 mm; a fixing adhesive is arranged between the third fold section and the side face of the main body to fix the third fold section relative to the main body.

This disclosure provides a pouch cell support structure, a power supply module, and an energy storage power supply. The aforementioned pouch cell support structure includes a support body with a cell mounting area for accommodating the pouch cells for mounting the power supply module. The structure also includes an elastic buffer pad disposed within the cell mounting area. One side of the buffer pad is mounted on the inner peripheral wall of the mounting area, and the other side provides elastic support for the pouch cells, thus confining them within the mounting area. This pouch cell support structure effectively improves the lifespan and safety of the energy storage power supply.

The application provides a battery device, an electric device and an energy storage device. The battery device comprises a box body and a soft package battery cell. The box body comprises a support plate and a frame. A plurality of soft package battery cells are stacked in a first direction. The soft package battery cell comprises a first surface and a second surface, a plurality of first surfaces are oppositely arranged along the first direction, and the support plate is oppositely arranged with a plurality of second surfaces along a second direction. The soft package battery cell comprises a packaging bag, an electrode assembly, an electrode terminal and a first insulating piece, the electrode assembly is provided with a tab portion at the end thereof along a third direction, the electrode terminal is welded with the tab portion and forms a first connecting portion, the area of the first connecting portion is 20mm 2 to 60mm 2 , the first insulating piece surrounds the electrode terminal and is arranged between the electrode terminal and the packaging bag, the first insulating piece is sealingly connected with the packaging bag and forms a second connecting portion, and the minimum distance between the first connecting portion and the second connecting portion along the third direction is 2mm-7mm.

The application discloses a kind of multistage pressure heat sealing systems and methods of soft package battery, it is related to battery manufacturing technical field;Method includes first according to preset first pressure value and first temperature value to soft package battery is pre-sealed, obtains first soft package battery;Subsequently, first soft package battery is extracted vacuum and obtains second soft package battery, and it is divided into first partition and second partition;Subsequently, by first, second pressure heat sealing model, the second, third pressure values corresponding to two partitions are calculated respectively;Finally, in combination with preset second, third temperature value, heat sealing operation is carried out to two partitions, and the heat sealing of soft package battery is completed.The method first pre-seals for subsequent heat sealing to lay foundation, then in combination with partition design and accurate pressure calculation, different heat sealing control is realized for the characteristic difference of different regions of soft package battery, both avoid the limitations of traditional single parameter heat sealing, and also solve the problem of uneven heat sealing caused by lack of scientific basis of partition, to improve the sealing of soft package battery package.

This invention belongs to the field of lithium-ion battery technology and relates to a battery module with a prestressed composite constraint structure. A pre-tightening constraint layer, a rigid-flexible coupling constraint structure, and an outer constraint layer are sequentially distributed from the inside to the outside of the battery stack. The rigid-flexible coupling constraint structure is a continuous force-bearing body formed by a high-strength flexible load-bearing material and structural adhesive. Prestress is introduced into the pre-tightening constraint layer and the rigid-flexible coupling constraint structure during the winding process, forming a radial compressive constraint force field on the outer periphery of the battery. This structure achieves active control of cell expansion through a "prestress-expansion stress offsetting" mechanism and homogenizes stress distribution through a circumferential continuous force-bearing structure. Compared with existing technologies, this invention can significantly reduce module expansion and structural deformation, improve cycle stability and service life, while also possessing lightweight design and good process adaptability, making it suitable for various pouch battery modules.

The application relates to a stable soft package battery and a preparation process thereof, and relates to the technical field of soft package batteries. The stable soft package battery comprises a LATP-coated LNCMAO positive electrode material. The LATP-coated LNCMAO positive electrode material is an LNCMAO positive electrode material coated with a LATP coating on the surface. The general formula of the LNCMAO positive electrode material is LiNi0.83Co0.06Mn0.06Al0.05O2. The LATP coating is made of a Li1.3Al0.3Ti1.7(PO4)3 material. The weight percentage of the LATP coating and the LNCMAO positive electrode material is 1wt%-3wt%. The application makes the soft package battery prepared by using the LATP-coated LNCMAO positive electrode material more stable, improves the safety of the soft package battery, and unexpectedly improves the initial coulomb efficiency and cycle performance of the LATP-coated LNCMAO positive electrode material, and improves the long-term use performance of the soft package battery.

This application relates to the field of batteries, specifically providing a battery module, a battery pack, and an electrical device. The battery module includes a battery pack, at least one metal protection plate, and at least one insulating barrier plate. The battery pack has two opposing end faces and multiple pouch cells disposed between the two end faces. The multiple pouch cells are arranged along a first direction. The metal protection plate is disposed on the outside of the end faces of the battery pack and has an exhaust port. The orthographic projection of the exhaust port on the end face at least partially coincides with the orthographic projection of the sealing portion of at least one pouch cell on the end face. The insulating barrier plate is disposed between the metal protection plate and the battery pack. A weak area on the insulating barrier plate is disposed opposite to the exhaust port, and the area enclosed by the weak area is smaller than the area of ​​the exhaust port. The insulating barrier plate is fixedly connected to the metal protection plate through a separator, and the insulating barrier plate, the metal protection plate, and the separator together form a gas storage cavity.

Systems and methods of the present disclosure provide a service loop for a pouch cell tab by bending the service loop into the cord length at the cell-level. Embodiments of the present disclosure reduces the risk of cell damage or open circuit welds. Both failure modes have the potential to open circuit a battery mid-operation or trigger a thermal runaway. According to various embodiments, the service loop is integral to the pouch such that no additional parts are used to form the pouch cell.

This application provides a battery device, an electrical device, and an energy storage device. The battery device includes a housing, a battery cell assembly, a first adhesive, and a second adhesive. The housing includes a support plate and a frame. The battery cell assembly includes multiple pouch battery cells stacked in a first direction. Each pouch battery cell has a rated capacity of 50Ah-300Ah. The surface of each pouch battery cell includes a first surface, a second surface, and a third surface. The two first surfaces are arranged opposite each other along the first direction, and the second and third surfaces are arranged opposite each other along a second direction. The area of ​​the first surface is larger than the area of ​​the second and third surfaces. The support plate is arranged opposite to the second surface along the second direction. The second surface of each pouch battery cell is bonded to the support plate by the first adhesive. The third surfaces of any two adjacent pouch battery cells in the battery cell assembly are bonded by the second adhesive.

The utility model discloses in-situ correlation testing device of soft package battery internal temperature field and crystal structure evolution belongs to the testing and safety technical field of secondary battery, including test cavity, and the X-ray transmission window of coaxial alignment is set up on the side wall of opposite two sides of test cavity, and the inside of test cavity is centrally provided with sample bearing clamp, and the surface of sample bearing clamp is provided with a plurality of recesses of temperature sensor shape matching, and the inner wall of test cavity is provided with temperature control regulator, and X-ray diffraction subassembly and electrochemistry workstation of being set up with the electrode of soft package battery through electric connection are provided outside test cavity. The utility model is applicable to in the electrochemistry cycle process, and the space-time coupling relation between the microcosmic process of formation, evolution and electrode material phase change, structure damage etc. of battery internal temperature field is monitored synchronously and in-situ.

The application discloses a kind of array synergic excitation ultrasonic probe battery defect imaging and intervention method and device, the method includes using high-frequency ultrasonic array to soft package battery is scanned, obtains the echo signal data of the soft package battery;According to the echo signal data generation the defect thermodynamic diagram of the soft package battery, according to the defect thermodynamic diagram determines the position and range of the soft package battery defect region;According to the position and range of the defect region, using low-frequency ultrasonic transducer array to the soft package battery is synergic excited, to carry out directional ultrasonic intervention to the defect region.The imaging and positioning of battery internal defect are realized by high-frequency ultrasonic array, and based on positioning result, using low-frequency high-power multi-transducer array to battery is synergic intervened, forms detection and repair closed-loop control mechanism, improves the pertinence and effectiveness of defect intervention, to reduce the damage risk to battery structure.

The utility model discloses puncture -resistant soft -pack battery module belongs to battery technical field, including soft -pack battery core, the upper fixed joint of soft -pack battery core has epoxy plate ear support assembly, the upper connection of epoxy plate ear support assembly has a plurality of connecting copper row, and the central position mounting of connecting copper row has two bolt assemblies, and the outside of soft -pack battery core is provided with isolation drying device, and the below of isolation drying device is provided with buffer damping device, the utility model discloses through setting isolation drying device, so that staff can need time through the cooperation of bidirectional screw rod and moving frame etc. Structure to soft -pack battery core etc. Structure carries out certain protection, thereby reduced the possibility that the puncture damage phenomenon occurs, and staff can need time through the cooperation of silica gel drier and fixed net etc. Structure to soft -pack battery core etc. Surrounding dry processing, thereby prevent the occurrence of the phenomenon of damp damage, and then improve the work capacity of module.

This invention provides a battery pack and an electrical device, relating to the field of battery technology. The battery pack includes multiple pouch cells and connecting tabs. Each pouch cell includes a cell, a casing, and a current output terminal. The current output terminal is bonded to and sealed to the casing. A first end of the current output terminal is electrically connected to a cell, and the connection forms the outer edge of the current output terminal. The connecting tab electrically connects the current output terminals of at least two pouch cells. The current output terminals are welded to the connecting tab to form a first welding area. The resistivity of the connecting tab is less than the resistivity of the current output terminals. Along the lead-out direction of the current output terminals, the length between the outer edge of the first end of the current output terminal and the first welding area along the current transmission direction forms a current-carrying length A mm. The resistivity of the connecting tab is T Ωmm² / m, and the thickness of any current output terminal is D mm. 0.6 ≤ AT / D ≤ 24.04. This technical solution solves the problem in related technologies where pouch cells cannot meet the requirements for high-rate charging and discharging.

Disclosed in the present application are a pouch battery and a battery pack. The pouch battery comprises: a case, which comprises a body portion and a packaging portion; a battery cell, which comprises an electrode assembly, a positive tab and a negative tab, wherein the electrode assembly is arranged inside the body portion, the positive tab and the negative tab are both connected to the electrode assembly, the positive tab and the negative tab are located on the same side of the electrode assembly in a third direction, and the positive tab and the negative tab both pass through the packaging portion in the third direction and extend to the outside of the packaging portion; and a collection board, which is arranged on the packaging portion and has a collection module and a wireless transmission module, wherein the collection module is electrically connected to each of the positive tab and the negative tab, and the wireless transmission module is electrically connected to the collection module. Data information of the battery cell is collected by means of the collection module, and the collected data information is transmitted to an external device by means of the wireless transmission module, thereby providing strong data support for state evaluation, fault diagnosis and predictive maintenance of the battery cell, eliminating the provision of cables, simplifying the structure, reducing the weight, and reducing the occupied space.

The present invention relates to a battery module and a method for manufacturing a heat dissipation element. The battery module comprises: an assembly of pouch-type battery cells; a housing for containing said assembly; and a heat dissipation element attached to the housing. This heat dissipation element has a through-hole in a heat-dissipation plate facing the cell assembly, and a sealing element in said hole. In this way, the volumetric expansion of the module is minimized, and overheating of an energized cell is effectively prevented.

The application provides a double-layer soft package battery normal-temperature partial capacity power supply built-in integrated machine device, which comprises a rack assembly, a battery tray probe assembly and a power supply unit layer. The battery tray probe assembly comprises a bottom plate, a fire-fighting spraying part, a fan heat dissipation part, a battery tray, a tray clamping positioning elbow clamp and a probe clamp part. The application has the beneficial effects of integrating the test clamp and the charge and discharge test power supply, high equipment integration, small occupied space, high degree of flexible test battery controlled by two layers of independent equipment, high efficiency, beautiful appearance of the equipment, simple operation and maintenance, avoidance of the exposure maintenance of a large number of channel lines, reduction of the labor training and maintenance cost, wide application in laboratories of large battery factories and scientific research institutions, and suitability for large-scale mature promotion to the market.

Systems and methods of the present disclosure provide a service loop for a pouch cell tab by bending the service loop into the cord length at the cell-level. Embodiments of the present disclosure reduces the risk of cell damage or open circuit welds. Both failure modes have the potential to open circuit a battery mid-operation or trigger a thermal runaway. According to various embodiments, the service loop is integral to the pouch such that no additional parts are used to form the pouch cell.

A method for manufacturing a pouch cell having a step of molding a pouch film comprising a metal layer so as to form a pair of cup portions capable of accommodating an electrode assembly at both sides of a bridge portion in the pouch film is provided. The pouch film is molded to satisfy an equation of T / D>0.006, where a thickness of the metal layer in the bridge portion is T mm, and a depth of the cup portion is D mm after molding. A pouch cell made by the method prevents the generation of cracks in the bridge portion of a pouch due to gases generated during charging and discharging.

A pouch battery cell and related battery device, energy storage device, and electric device are provided. The pouch battery cell includes a film shell and an electrode assembly. The film shell has a wall thickness of 0.2 mm or less and comprises two film parts connected in a first direction. Each film part defines an accommodating groove, and the grooves are arranged opposite to each other to form an accommodating cavity. The electrode assembly is disposed within the cavity. A dimension of the pouch battery cell in the first direction is defined as a first dimension, and a dimension of each film part in the first direction is a second dimension. The first dimension ranges from 5 mm to 70 mm, and a ratio of the second dimension to the first dimension is between 0.4 and 0.6.

A battery module according to an embodiment of the present disclosure may include: pouch cells arranged in a first direction, each of the pouch cells including an electrode lead protruding in a second direction perpendicular to the first direction; a module frame configured to accommodate the pouch cells and open in the second direction, the module frame including a top plate having first vent holes and a first non-perforated portion; a first vent guide structure disposed between the pouch cells and the top plate, the first vent guide structure including second vent holes and a second non-perforated portion, and configured to guide venting toward the plurality of first vent holes; and a bus bar frame coupled to the module frame in the second direction and including a second vent guide structure configured to guide venting toward the first vent holes.

A multilayer thermal barrier, batten7 modules, and associated methods are disclosed. In one example, a resilient layer of a multilayer thermal barrier is dimensioned to a footprint substantially the same size as a lithium-ion pouch cell. Configurations are shown where a thermal insulation layer extends laterally beyond the footprint.

The application relates to the technical field of batteries, in particular to a soft package battery, a gas tightness detection device and a packaging device. The soft package battery comprises a soft package battery body, a base and an anti-explosion diaphragm. The base is formed with a flow-through channel, a communication port and a pressure relief port. The soft package battery body is formed with a through port. The base is connected with the soft package battery body, and the flow-through channel is communicated with the inside of the soft package battery body through the communication port and the through port. The anti-explosion diaphragm is installed on the base and covers the pressure relief port. It can be seen that, due to the added pressure relief structure, when the soft package battery produces gas to reach a certain pressure value due to overcharging, overdischarging and the like during use, the anti-explosion diaphragm of the pressure relief structure will be automatically broken to achieve the purpose of early pressure relief, and the safety and reliability of the soft package battery are improved. In addition, during the manufacturing process of the soft package battery, the sealing performance of the whole soft package battery can be detected through the pressure relief structure to prevent the liquid leakage risk caused by poor sealing.

The embodiment of the application provides a kind of soft package battery's multiple field in-situ strain characterization method and device, with shear thickening electrolyte, soft package battery speckle mark surface is upwards, it is placed in the recess of in-situ observation platform, and positive and negative lug is connected to hard plate;Using intelligent temperature control device, the ambient temperature is adjusted to experimental temperature, infrared thermal imager is opened, and it is aligned with soft package battery;Fixed mechanical loading device is below the impact window of in-situ observation platform, and the adjustable power supply outside explosion-proof cover is connected with point device;Soft package battery is connected with battery test system and carries out charge-discharge test;CCD camera is connected with computer and is aligned with in-situ observation platform observation window, and starts shooting;Adjust the adjustable power supply parameter outside explosion-proof cover, and start mechanical loading device;Output the first mechanical behavior information and the second mechanical behavior information corresponding to the first time and the second time of soft package battery;According to the first mechanical behavior information and the second mechanical behavior information, the surface strain of soft package battery is obtained.

This invention relates to the field of new energy technology and discloses a soft-pack battery and an electrical device. The soft-pack battery includes: a casing, a cell, and electrode sheets. The casing has a through-hole suitable for the electrode sheets to pass through, and the electrode sheets are at least partially disposed within the through-hole. A sealing and insulating member is disposed between the electrode sheets and the casing, and along a first direction, the sealing and insulating member is at least partially located within the through-hole. The electrode sheets have a notch at at least one end in a third direction, and the notch is connected to the casing through the sealing and insulating member. Along a second direction, the maximum size of the notch is A mm, and the thickness of the electrode sheet is B mm, satisfying: 0.069 ≤ A / B ≤ 0.889. The soft-pack battery provided by this invention controls A / B within a reasonable range, which can optimize the interlayer bonding form of the hot-press sealing while ensuring the conductivity of the electrode sheets, thereby improving the sealing reliability.