634 results about "Pouch cell" patented technology

This invention discloses a pouch battery module endplate flipping and loading device, relating to pouch battery module endplate conveying technology. It includes a loading bracket fixedly connected to a storage mechanism, with a battery endplate body to be clamped and loaded positioned below the loading bracket. It also includes a conveying mechanism positioned above the loading bracket, comprising a conveying support, and conveying grippers on both the front and rear sides of the lower end of the conveying support. The conveying support contains a dust removal mechanism, including a dust removal slide and a dust removal rotating shaft. This pouch battery module endplate flipping and loading device uses the dust removal mechanism inside the conveying bracket to assist in cleaning the clamping area of ​​the battery endplate body. After the clamping mechanism achieves positioning, the conveying mechanism drives the battery endplate body to rotate. Non-rigid contact avoids indentation damage, improving the efficiency and stability of the flipping and conveying process.

The utility model discloses a battery pack and electric equipment. The battery pack comprises a soft package battery and a PCB (Printed Circuit Board), a plurality of soft package batteries are distributed in the width direction of the soft package batteries, each soft package battery comprises a shell and a battery cell, each shell comprises a packaging part and side edge sealing parts, the battery cells are located in the packaging parts, the side edge sealing parts are connected to the two opposite sides of the packaging parts in the width direction of the soft package batteries, and the side edge sealing parts between the adjacent packaging parts are inner side edge sealing parts. One end of the packaging part in the length direction of the soft package battery is provided with a first surface; the PCB is located on the first surface of the soft package battery, the inner side edge sealing part protrudes towards the PCB relative to the first surface, the PCB is provided with second surfaces opposite to each other in the thickness direction of the PCB, one second surface faces the first surface, the PCB is provided with a first receding groove, and the first receding groove is communicated with the first receding groove. The part of the inner side edge sealing part extends into the first clearance groove, so that the distance between the PCB and the packaging part is reduced, the length of the battery pack is reduced, and the energy density of the battery pack is improved.

The invention discloses a soft package battery fault detection method and system based on an adaptive neural network, and the method comprises the steps: constructing a battery temperature spatial distribution model considering thermal anomaly and sensor faults, carrying out the homogenization of non-homogeneous boundary conditions through employing an auxiliary function decomposition method, and building an ODE dimension reduction system in combination with a Galerkin method; the method comprises the following steps: acquiring surface temperature, current and terminal voltage data of a battery, designing stable parameters through a linear matrix inequality, estimating a nonlinear thermal generation item by adopting a neural network observer with a self-adaptive weight matrix, and constructing an error system; a lumped residual error evaluation mechanism is introduced, a dynamic fault threshold value is generated based on a kernel density estimation technology, and online detection is completed by comparing a residual error evaluation value of an output estimation error with the threshold value in real time. According to the method, limitation of a traditional lumped parameter model is broken through, distributed thermal fault detection of the two-dimensional soft package battery can be achieved only through a small number of thermocouples, the hardware cost is greatly reduced while precision is guaranteed, and a new technical path is provided for power battery safety management.

The invention discloses a non-linear ultrasound-based soft package battery internal tiny foreign matter imaging method, which belongs to the field of power battery manufacturing, and comprises the following steps: exciting and receiving non-linear ultrasound on the surface of a soft package battery by using a non-linear ultrasound measurement system, and extracting a non-linear ultrasound time domain signal carrying foreign matter information; performing C scanning on the soft package battery by adopting a three-degree-of-freedom motion platform, and obtaining acoustic nonlinear parameters and spatial distribution of the acoustic nonlinear parameters based on the position of a focused ultrasonic transducer, the nonlinear ultrasonic time domain signal and the frequency spectrum; performing normalization processing on the acoustic nonlinear parameters, and constructing a function relationship between the normalized acoustic nonlinear parameters and different foreign matters; and inverting the size and the position of the foreign matter based on the function relationship between the normalized acoustic nonlinear parameter and different foreign matters and the spatial distribution of the acoustic nonlinear parameter.

The invention provides a machine vision-based soft package battery tab accurate positioning and cutting method and system, and relates to the technical field of battery manufacturing, and the method comprises the steps: collecting front and side images of a soft package battery, and constructing a tab three-dimensional grid model; using a deep neural network to extract connection interface morphology features, and analyzing stress distribution; identifying a stress concentration area by adopting spectral imaging, and determining a cutting safety area; and finally planning a tool path and generating machining parameters. The optimal cutting position of the tab can be accurately identified, the cutting precision is improved, the deformation and damage risks of the tab are reduced, and the service life of the battery is prolonged.

The application discloses a metal organic framework reference solid-state electrolyte and a preparation method and application thereof, the electrolyte takes a commercial diaphragm as a base, takes a metal organic framework as a carrier, and has metal nanoparticles deposited on the base; wherein the metal nanoparticles provide nucleation sites for the metal organic framework on the base; the thickness of the metal organic framework layer of the electrolyte is 0.2-30 microns, and the mass of the electrolyte is 0.2-30 mg / cm 2 The application has the following advantages: (1) the electrolyte can construct a high specific energy lithium metal battery; (2) the electrolyte has excellent mechanical stability, and can still maintain structural stability even after experiencing hundreds of electrochemical cycles; (3) the electrolyte has good compatibility with lithium metal, and can significantly improve the cycle life of the lithium metal battery; and (4) a soft package battery of LiNi 0.8 Co 0.15 Al 0.05 O2 / / Li (NCA / / Li, 3-35 mg cm ‑2 NCA loading) has an energy density of 200-450 Wh / kg and stable electrochemical performance (50-1000 cycle life, 60-95% capacity retention rate).

The invention relates to the technical field of batteries, and provides a battery device and a power utilization device, the battery device comprises soft package battery monomers, a box body and a plurality of heat dissipation shells, the soft package battery monomers are accommodated in the box body, the heat dissipation shells are accommodated in the box body, the plurality of heat dissipation shells are arranged along a first direction, and the plurality of soft package battery monomers are accommodated in each heat dissipation shell; in the second direction, the heat dissipation shell is provided with a first end and a second end which are opposite, the first end is provided with an opening and fixedly connected to the bottom wall of the inner side of the box body through an adhesive layer, and the surface of the second end is connected with a first heat dissipation piece; wherein the first direction intersects with the second direction; according to the soft package battery monomer provided by the embodiment of the invention, the heat dissipation efficiency of the heat dissipation shell can be improved by utilizing the first heat dissipation piece, so that the heat dissipation effect of the soft package battery monomer in the heat dissipation shell is improved, and the probability of thermal runaway caused by thermal aggregation of the soft package battery monomer is effectively reduced.

The utility model provides a soft package battery detection device. The x-axis sliding grooves are formed in the left side edge and the right side edge of the product groove position used for containing the soft package battery, the x-axis limiting blocks which can draw close to each other to fix the left side and the right side of the soft package battery are arranged in the x-axis sliding grooves, and meanwhile the y-axis sliding grooves are formed in the front side edge and the rear side edge of the product groove position. Y-axis limiting blocks which can be drawn close to each other to fix the front side and the rear side of the soft package battery are arranged in each y-axis sliding groove, so that the x-axis width and the y-axis width of the product groove are adjusted according to the soft package batteries of different sizes, thicknesses, specifications and models, in addition, the x-axis limiting blocks and the y-axis limiting blocks limit and fix the soft package batteries, and therefore the soft package batteries can be fixed conveniently. The soft package batteries with different sizes, thicknesses, specifications and models can be compatibly placed in the product slots for detection; the utility model belongs to the technical field of test equipment.

The utility model relates to the technical field of battery processing automation equipment, and particularly discloses a pick-and-place device which has a first direction and a second direction which intersect with each other and comprises a mechanical arm, a support, a pick-and-place piece and an adjusting mechanism, and the pick-and-place piece and the adjusting mechanism are arranged on the support. The adjusting mechanism comprises a taking assembly and a driving part used for driving the taking assembly to move in the second direction, and the taking assembly is arranged at the end, located in the second direction, of the taking and placing part. According to the scheme, the taking assembly and the taking and placing piece are independently designed, so that the structural difference between the electric core and the circuit soft board can be well adapted, and the whole product can be accurately taken and placed; and the taking assembly can be driven by the driving part to move in the second direction, so that the position of the circuit soft board can be finely adjusted, the accuracy of secondary placement of the two soft package batteries is guaranteed, and the subsequent welding quality is improved.

The invention discloses a tab assembly and a soft package battery, and the tab assembly comprises an outer tab and tab glue. The outer tab comprises an outer connecting part and an inner connecting part which are distributed in the length direction of the outer tab and connected with each other, and the outer connecting part is used for being connected with an external circuit; the inner connecting part is sleeved with the tab glue, the tab glue and the inner connecting part jointly define a connecting cavity, the connecting cavity is provided with a connecting port, the connecting port is used for allowing a false tab of the cell to stretch into the connecting cavity, and the false tab abuts against the outer tab through the tab glue. Therefore, when the tab assembly is used for processing and forming the soft package battery, the false tab can be inserted into the connecting cavity from the connecting port, the tab glue is clamped in the edge sealing structure of the soft package battery, and the tab glue and the edge sealing structure are welded into a whole through a packaging process, so that the outer tab and the false tab are firmly propped against each other without welding, and the reliability of the soft package battery is improved. Therefore, soft package battery processing steps are reduced, processing efficiency is improved, and processing cost is reduced.

The invention discloses an experimental method for researching the corrosion mechanism of an aluminum shell by equivalently simulating the negative short circuit of a battery. The experimental method comprises the following steps: firstly, in a dew point management and control environment, taking out a charged negative pole piece from the interior of a full-charge battery for later use, then combining with an aluminum foil serving as a positive pole to assemble a soft package battery, injecting an electrolyte, then performing plastic packaging to obtain a negative short condition of the negative pole in contact with the aluminum foil in an equivalent simulation battery, taking out the aluminum foil after standing reaction, and finally obtaining the negative short condition of the battery. The corrosion phenomenon is observed; and performing SEM test and ICP test on the aluminum foil after the reaction, verifying components on the aluminum foil after the reaction, and analyzing the corrosion mechanism of the aluminum shell according to the corrosion phenomenon of the aluminum foil and the components on the aluminum foil after the reaction. According to the equivalent simulation battery negative short experiment method, the electrochemical corrosion mechanism is verified by performing SEM test and ICP test on the aluminum foil, and the method is simple and convenient.

The invention provides double-layer soft package battery normal temperature capacity grading power supply built-in all-in-one machine equipment, which comprises a rack assembly, a battery tray probe assembly and a power supply unit layer, and is characterized in that 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 and positioning toggle clamp and a probe clamp part; the device has the beneficial effects that the test fixture and the charge and discharge test power supply are integrated, the device integration degree is high, the occupied space is small, the device is divided into two layers to independently control the flexible test battery, the degree is high, the efficiency is high, the device appearance is attractive, operation and maintenance are simple, and particularly, exposed maintenance of a large number of channel lines is avoided; and the device can be widely applied to various large battery plant laboratories and scientific research institutions, and is suitable for being maturely popularized to the market in a large scale.

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.

The present invention relates to an apparatus for processing a pouch-type battery cell case and a processing method using same and, more specifically, to an apparatus for processing a pouch-type battery cell case and a processing method using same, the apparatus comprising: a die part on which a battery cell case including a pocket part and an extension part outside the pocket part is seated; a gripping part for transferring the extension part of the battery cell case to one side while gripping the extension part; and a cutting part positioned between the die part and the gripping part and cutting a partial area of the extension part of the battery cell case being transferred, wherein the die part is a conveyor which continuously moves toward one side.

The present invention provides a battery module structure including a battery cell stack formed by stacking a plurality of pouch-type battery cells, a frame that is open at the front and rear and that houses the battery cell stack, and a pair of end plates that cover the front and rear of the frame, and further includes a flame-retardant cover attached to a predetermined area on the surface of the frame, the predetermined area being divided into a plurality of divided areas, and the flame-retardant cover including a plurality of divided covers attached to cover each of the divided areas.

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.

A sealing block for sealing a pouch-shaped secondary battery includes a main body unit for sealing at least a part of an outer edge of a battery case from which an electrode terminal protrudes by applying heat and / or pressure thereto and a wrinkle prevention unit coupled perpendicularly to one surface of the main body unit, the wrinkle prevention unit including a curved structure that corresponds to a rounded corner of an electrode assembly reception unit of the battery case, wherein the wrinkle prevention unit further includes an extension portion for connecting the curved structure of the wrinkle prevention unit to the main body unit. Sealing may be performed when the wrinkle prevention unit is adjacent to the electrode assembly reception unit via the extension portion.

The invention discloses a battery tab heat sealing method and a production line, and relates to the field of tab heat sealability, and the tab heat sealing method at least comprises the following steps: S1, detecting the melting temperature Tmp of a PP layer and the melting temperature Tmt of tab glue; s2, the tab glue is preheated, the preheating time is T1, and the preheating temperature is Tm1; s3, carrying out heat sealing on the tab glue and the PP layer at the temperature of Tm2; s4, carrying out heat sealing on other sealing edges of the soft package battery; the temperature Tm1 for heating the tab glue in the step S2 is smaller than Tmp-10 DEG C and Tmt-10 DEG C at the same time, the tab glue is preheated before the tab glue and the PP layer on the tab are subjected to heat sealing, the heat sealing efficiency is improved, meanwhile, the tab glue plays a role in heating the PP layer from the inner side in the heat sealing process, the melting of the PP layer is accelerated, the melting uniformity of the PP layer is ensured, and the heat sealing efficiency is improved. Further, the fusion quality between the PP layer and the tab glue is improved, so that the PP layer is uniformly distributed, and the problems of poor insulation or liquid leakage and the like of a battery cell caused by formation of structural weak points are avoided.

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.

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.

The application provides a soft package battery and an electric tool, and relates to the technical field of batteries. The soft package battery comprises a shell, an electric core assembly arranged in the shell, and a circuit board assembly, the electric core assembly is provided with a connecting end for electrically connecting with the circuit board assembly; the soft package battery further comprises a heat-conducting buffer layer arranged on at least one surface of the electric core assembly except the surface where the connecting end is located. The soft package battery can realize heat conduction and mechanical shock absorption at the same time, and the use safety and reliability of the soft package battery are improved.

A pouch cell marking device facilitates reliably accurate and precise placement of marks used as guides for cutting of pouch cells for disassembly that reduces the chances of inaccurate placement of such marks compared to determining the placement of such marks by manual measurements. The device includes a surface for receiving a pouch cell and a plurality of securement mechanisms. The securement mechanisms are designed and configured to hold a pouch cell in place on the surface of the device in a fixed position while the pouch cell is marked for cutting. A plurality of cutting mark guide members are configured to contact the pouch cell while the pouch cell is secured to the device and provide a guide for placement of the cutting marks. The cutting mark guide members may be attached to and move together with respective securement mechanisms to increase efficiency.

The utility model discloses a soft package battery and a battery pack, and the soft package battery comprises a shell which comprises a body part and a packaging part; the battery cell comprises an electrode assembly, a positive electrode lug and a negative electrode lug, the electrode assembly is arranged in the body part, the positive electrode lug and the negative electrode lug are connected with the electrode assembly, the positive electrode lug and the negative electrode lug are located on the same side of the electrode assembly in the third direction, and the positive electrode lug and the negative electrode lug penetrate through the packaging part in the third direction and extend out of the packaging part; and the acquisition board is arranged at the packaging part, the acquisition board is provided with an acquisition module and a wireless transmitting module, the acquisition module is electrically connected with the positive tab and the negative tab, and the wireless transmitting module is electrically connected with the acquisition module. The data information of the battery cell is acquired through the acquisition module, and the acquired data information is transmitted to the external equipment through the wireless transmitting module, so that powerful data support is provided for state evaluation, fault diagnosis and predictive maintenance of the battery cell, cable arrangement is omitted, the structure is simplified, the weight is reduced, and the occupied space is reduced.

The utility model belongs to the technical field of battery manufacturing, and particularly relates to an edge folding device for a soft package battery. The edge folding device for the soft package battery comprises a base, and further comprises a positioning structure which is arranged on the base and is used for positioning a battery cell during edge folding, and an edge folding unit which is arranged on at least one side of the positioning structure and is used for supporting and shaping a side sealing edge of the battery during edge folding, each edge folding unit is provided with a horizontal supporting surface for supporting the side sealing edge of the battery during edge folding, and an edge folding surface which is connected with the horizontal supporting surface at a preset angle and is used for shaping the side sealing edge of the battery during edge folding. When in use, the battery cell is accurately positioned and limited through the positioning structure, so that the battery cell is prevented from shifting in the edge folding process; the battery side sealing edge is supported through the horizontal supporting surface of the edge folding unit, and the battery side sealing edge is shaped through the edge folding surface, so that the problems of collapse or arching and the like of the side sealing edge are effectively avoided when the battery side sealing edge is pressed and folded, and the edge folding flatness of the battery side sealing edge is effectively ensured.

The invention relates to the technical field of new energy, and discloses a soft package battery device and electric equipment. The fixing strip comprises an extending section and a fixing section, and the extending section and the second end face are oppositely arranged; the fixed sections are arranged at the two ends of the extending section in the first direction and connected to the two first end faces respectively. An elastic insulating layer is arranged on at least part of the periphery of the extension section and is at least located between the fixing strip and the shell; in the second direction, the ratio of the size of the fixing strip to the size of the second end face is M; the thickness of the elastic insulating layer is D2 [mu] m; the shell at least comprises an inner metal layer and an outer insulating layer covering the outer surface of the inner metal layer, and the thickness of the outer insulating layer is D1 [mu] m; m * D1 * D2 is greater than or equal to 14.4 and less than or equal to 40850. The soft package battery device provided by the invention ensures the insulation use safety of the battery, and improves the space utilization rate of the battery pack at the same time.

The invention provides a foldable soft package battery cell. A collapsible pouch battery cell for use within a traction battery pack is provided. An exemplary pouch battery cell may include a flexible portion that may be folded to provide a more compact packaging design than a conventional pouch battery cell. The proposed design allows the sensitive component of the pouch cell to further move away from the layered body of the electrode assembly of the pouch cell. And the flexible part of the soft package battery cell can be bent by 90 degrees or more. Compared with the conventional soft package battery cell design, the compact design is convenient for increasing the energy density.

The invention relates to the technical field of batteries, and discloses a battery pack and an electric device. The battery pack comprises a plurality of soft package batteries, each soft package battery comprises a shell, the shell comprises two large surfaces opposite to each other along a first direction and two side surfaces opposite to each other along a second direction, and the plurality of soft package batteries are arranged along the first direction; the shell is used for accommodating the soft package battery and comprises a side plate and a fixing piece, and the side plate is opposite to the large surface; the fixing piece is arranged opposite to the side surface; the side plates comprise an inner side plate and an outer side plate, and in the first direction, the inner side plate is closer to the soft package battery than the outer side plate; the fixing piece is welded to the outer side plate through at least one welding part, and the welding part is opposite to the large face. Therefore, the inner side plate plays a certain role in heat insulation, and the risk that the aluminum plastic film is damaged due to high temperature is avoided.

The invention relates to the field of battery processing, and discloses a bag-shaped battery cell shell processing device and a processing method using the bag-shaped battery cell shell processing device, and particularly discloses the bag-shaped battery cell shell processing device and the processing method using the bag-shaped battery cell shell processing device. The mold unit is configured to allow a battery cell case including a pouch portion and an extension portion provided outside the pouch portion to be placed on the mold unit; the clamping unit is configured to convey the extension part of the battery cell shell to one side while clamping the extension part of the battery cell shell; the cutting unit is located between the mold unit and the clamping unit, the cutting unit is constructed to cut a part of an extending part of a battery cell shell which is being conveyed, and the mold unit is a conveying device which is constructed to continuously move towards one side.