791 results about "Pouch cell" patented technology

The invention relates to a soft package lithium battery internal and external temperature real-time monitoring method, which comprises the following steps of: in a soft package battery packaging process, implanting a plurality of superfine thermocouples into a key area in a battery to obtain a temperature change condition in the battery; the key area comprises an area below the current collector, a maximum thickness position and an area close to the bottom of the shell; meanwhile, a plurality of distributed temperature measuring points are arranged on the outer surface of the battery, superfine thermocouples are arranged respectively, a distributed monitoring network is formed, and the temperature change condition outside the battery is obtained; the proportion of the total volume of the implanted superfine thermocouple to the internal space of the battery is lt; 0.03% by weight; temperature data are recorded in real time through high-precision acquisition equipment, the sampling frequency is adjustable, and the temperature error does not exceed + / -0.01 DEG C. By optimizing a sensor arrangement strategy, the original performance of the battery is maintained to the maximum extent while accurate temperature monitoring is achieved, and the method is suitable for temperature field accurate management and thermal safety control in the fields of power batteries, energy storage batteries and the like.

Apparatus, systems, and methods described herein relate to the manufacture and use of single pouch battery cells. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a pouch, the first current collector having a first electrode material disposed thereon, a second current collector coupled to a second portion of the pouch, the second current collector having a second electrode material disposed thereon, and a separator disposed between the first electrode material and the second electrode material. The first portion of the pouch is coupled to the second portion of the pouch to enclose the electrochemical cell.

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 relates to the field of new energy automobiles, and discloses a soft package battery. The soft package battery comprises a shell, a battery module and a heat insulation piece, wherein the shell is provided with a pressure relief hole, the heat insulation part and the battery module are both arranged in the shell, the shell is divided into a containing cavity and a pressure relief cavity by the heat insulation part, the containing cavity is used for containing the battery module, the heat insulation part is provided with a first vent hole, and the pressure relief cavity is connected with the pressure relief hole. High-temperature gas and jet can flow into the pressure relief cavity through the first vent hole in the heat insulation piece and then are discharged out of the soft package battery through the pressure relief opening. The heat insulation piece comprises a mica heat insulation plate, so that the high temperature and impact of thermal runaway are effectively separated from the battery module, and the battery module is not influenced by thermal runaway products to explode. At least the part of the shell, which is opposite to the first vent hole, is made of a mica material, so that the impact of thermal runaway products can be effectively prevented, and the service life of the soft package battery is further prolonged.

The utility model relates to the field of batteries, and discloses a battery device and an electric device, and the battery device comprises a box body with an accommodating space; the battery pack is arranged in the accommodating space, the first side of the battery pack is adhered to the box body, the battery pack comprises a plurality of soft package battery monomers which are arranged side by side, and a gap is formed between every two adjacent soft package battery monomers; wherein at least one soft package battery monomer is provided with an edge sealing bending part on the first side, and the edge sealing bending part is bent towards any adjacent gap and at least seals the corresponding gap. According to the utility model, the edge sealing bending parts can play a role in preventing glue overflow, so that the risk that glue overflows into gaps among the soft package battery monomers is reduced, the probability that hard structures are formed among the soft package battery monomers due to the overflow glue is reduced, and the risk that the soft package battery monomers have relatively large local stress is reduced; the occurrence of lithium separation caused by damage of the shell of the soft package battery monomer is reduced, the reliability of the soft package battery monomer is improved, and the reliability of the battery device is improved.

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 utility model relates to the technical field of batteries, in particular to a tab structure, a battery module and a soft package battery. The tab structure comprises a tab sleeve, a first hard tab and a second hard tab, a first mounting hole and a second mounting hole are formed in the tab sleeve, the first mounting hole and the second mounting hole are correspondingly arranged at a preset interval, the first hard tab is arranged in the first mounting hole and extends outwards along the two ends of the tab sleeve, and the second hard tab is arranged in the second mounting hole and extends outwards along the two ends of the tab sleeve. The second hard tab is arranged in the second mounting hole and extends outwards along the two ends of the tab sleeve, and the extension directions of the first hard tab and the second hard tab on the tab sleeve correspond to each other. After the tab structure is connected with the positive plate and the negative plate of the battery module, the correspondence between the first hard tab and the second hard tab can be ensured, and the production qualification rate of the soft package battery is improved.

The present invention relates to the field of battery preparation. Aiming at the problem of insufficient exhaust of soft-pack batteries, a secondary formation method for reducing soft-pack gas generation is provided, including the following steps: cell encapsulation, battery liquid injection, sealing, primary formation, primary air extraction and sealing, secondary formation, and secondary air extraction and sealing. The cut-off SOC of the primary formation is 30-40%, and the cut-off SOC of the secondary formation is 90-100%. By controlling the cut-off SOC of the primary formation, increasing the secondary formation, and secondary air extraction, the exhaust of the soft-pack battery is made more thorough.

The utility model discloses a soft package battery monomer, a battery device, an energy storage device and a power utilization device, the soft package battery monomer comprises a membrane shell, the wall thickness of the membrane shell is less than or equal to 0.2 mm, the membrane shell comprises two membrane parts connected in a first direction, the two membrane parts define accommodating grooves, the accommodating grooves of the two membrane parts are oppositely arranged in the first direction, and the two membrane parts are oppositely arranged in the first direction; a containing cavity of the membrane shell is jointly formed; the electrode assembly is arranged in the accommodating cavity, the size of the soft package battery monomer in the first direction is a first size, the size of any membrane part in the first direction is a second size, the first size is larger than or equal to 5mm and smaller than or equal to 70mm, and the ratio of the second size to the first size is larger than or equal to 0.4 and smaller than or equal to 0.6. According to the soft package battery monomer, the energy density of the soft package battery monomer can be well improved, so that the arrangement space of the soft package battery monomer in the battery device is increased, and the overall energy density of the battery device is well 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 relates to the technical field of batteries, and discloses a soft package battery and a battery pack, the soft package battery comprises a pole group, a first packaging film and a second packaging film; the first packaging film is provided with a containing groove used for installing the pole group, and the pole group is arranged in the containing groove; the second packaging film is arranged opposite to the first packaging film, packaging areas surrounding the periphery of the containing groove are reserved between the second packaging film and the first packaging film, and the packaging areas are fixed through hot melting plastic package so that the pole group can be packaged in the containing groove; wherein the depth of the accommodating groove is H, the thickness of the first packaging film is T1, the thickness of the second packaging film is T2, the thickness of the soft package battery is T3, and H is larger than or equal to (T3-T1-T2) / 1.1 and smaller than or equal to (T3-T1-T2) / 0.9. By limiting the relationship among the depth of the accommodating groove, the thickness of the first packaging film, the thickness of the second packaging film and the thickness of the soft package battery, the depth of the accommodating groove is maintained in a proper range, and the assembling effect of the pole group can be improved.

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 utility model discloses an auxiliary welding tool for soft package battery tabs. The auxiliary welding tool comprises a supporting base, a tab pressing mechanism and a tab centering mechanism. A battery is placed in the supporting seat; the tab pressing mechanism comprises a pressing plate; the pressing plate is driven by a movable plate to move up and down so as to press the tab; the tab centering mechanism comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are located in the middle of the upper portion of the supporting base, and the first clamping plate and the second clamping plate are arranged in parallel and push a tab so that the tab can be attached to the battery in the middle; according to the welding auxiliary tool for the soft package battery tabs, through the arranged tab pressing mechanism, the tabs can be pressed through the pressing plate after the tabs are placed on the battery; the tab centering mechanism is arranged, so that the tab can be centered and pressed on one side of the battery; deflection and movement of the tabs in the welding process are avoided, and the welding accuracy of the tabs of the soft package battery module is improved.

Disclosure is a pouch-type cell in which a full width of a pouch cell is evenly maintained from an upper end to a lower end by completely fixing a sealing part of the pouch cell through molding using infrared heating, even without the use of tape, and a method for molding a sealing part thereof. The pouch-type cell includes an electrode assembly housing part; and sealing parts positioned at both side ends of the electrode assembly housing part, respectively, and protruding in an outward direction, in which the sealing parts include a portion overlapped by folding a tip, and the overlapped portions of the sealing parts form a constant angle in a range of is 80 to 90 degrees with a sealing part portion except the overlapped portion without the help of an external force.

An aspect of the current disclosure includes a pouch cell deformation testing apparatus and a deformation testing method using the same. The pouch cell deformation testing apparatus may include a die unit configured to allow a pouch cell to be seated thereon in an erected state, and a measurement member located above the die unit. The measurement member may be configured to measure a flatness of the pouch cell.

The invention relates to the technical field of soft package battery processing, in particular to soft package battery assembling equipment and a method thereof.The soft package battery assembling equipment is provided with a conveying part used for conveying battery cells, and a tab processing assembly, a rubberizing assembly, a stacking assembly, a bending assembly, a tab welding assembly, an upper shell assembly and a shell welding assembly are sequentially arranged in the battery cell conveying direction of the conveying part; the tab processing assembly comprises a cutting piece arranged corresponding to the conveying piece, and the cutting piece can cut the tab; the rubberizing assembly comprises a gluing piece arranged corresponding to the conveying piece so as to paste a film on the battery cell; and the stacking assembly comprises a storage rack and a grabbing piece for conveying the battery cells into the storage rack to be stacked and transferring the battery cells to the conveying piece. The problems that in the prior art, soft package battery processing equipment is insufficient in continuity and large in occupied area, and then the soft package battery processing quality and efficiency are affected are solved.

The invention discloses a thermal management method and device for a soft package battery, and belongs to the technical field of battery thermal management, and the method comprises the steps: constructing an equivalent circuit model and a two-dimensional thermal model of the soft package battery; performing two-dimensional coupling on the equivalent circuit model and the two-dimensional thermal model to obtain a two-dimensional thermoelectric coupling model of the soft package battery; according to the two-dimensional thermoelectric coupling model, combining a Kalman filtering algorithm to predict temperature values of a plurality of areas of the soft package battery in real time; performing thermal management on the soft package battery according to the temperature value; the equivalent circuit model of the soft package battery and the two-dimensional thermal model are subjected to two-dimensional coupling to obtain the two-dimensional thermoelectric coupling model, direct thermoelectric association is realized, the thermal parameter can be directly obtained according to the electric parameter, and introduction of an additional sensor is avoided; the temperature value is predicted in real time through the Kalman filtering algorithm, accurate temperature prediction is achieved, then thermal management is conducted according to the temperature value, and accurate temperature control is achieved.

High-voltage storage device (1) for a motor vehicle, comprising a plurality of electrically interconnected energy storage cells (2) designed as pouch cells, which are arranged in a storage housing (6) of the high-voltage storage device (1), wherein at least one cell group (3) comprising at least two energy storage cells (2) is provided, which are arranged one behind the other in the longitudinal direction (4) of the energy storage cells (2), wherein the electrical contact sections (5) of the energy storage cells (2) are aligned in the longitudinal direction (4) and are electrically interconnected.

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 provides an electrolyte detecting and screening method which comprises the following steps: S1, thickly coating an electrode auxiliary material on an initial positive pole piece and an initial negative pole piece until the surface density of the pole pieces reaches a preset surface density to obtain a soft package battery; s2, after activation circulation is carried out on the soft package battery, the soft package battery is disassembled and cleaned, and a test pole piece is obtained; s3, applying pressure to the test pole piece, so that the test pole piece is in contact with the multiple to-be-detected electrolytes in sequence for infiltration, and multiple micro batteries with pressure are obtained; and S4, after the minicell is stable, heat effect testing is carried out on the minicell in sequence. According to the invention, the problem of micro short circuit of powder is overcome by thick coating of the electrode auxiliary material, and meanwhile, the test pole piece is pressurized to be in full contact with the electrolyte to be tested, so that the problem of non-uniform infiltration of the electrolyte is remarkably improved, and the key problem of influence on the test accuracy in the prior art is overcome; and the test result is more stable and accurate, so that the method has a wide application prospect in the industry.

An aerosol provision device includes an aerosol generator and a power source connected to the aerosol generator. The power source includes a pouch cell.

The present invention discloses a cutting method and a cutting device for a soft-pack battery shell. The cutting method comprises the following steps: obtaining a target length L of the soft-pack battery shell; M , the average length L of n first shells cut before the first shell is cut a According to the average length L a and the target length L M , control the first cutter assembly to move from the cutting position of the cut first shell to the target cutting position of the to-be-cut first shell, and cut the to-be-cut first shell to obtain the cut first shell. The present invention is based on the average length L of the first n cut first shells. a and target length L M , timely adjust the target cutting position of the first cutter assembly, and cut the first shell to be cut, so that the length value L of each first shell after cutting b Compared to the average length L of the cut first shell a Closer to target length L M , to achieve the effect of improving the length consistency of soft-pack batteries, thereby improving the cycle life and safety performance of the batteries.

The utility model discloses a soft package battery clamping device with a tab protection function and a pressure and temperature monitoring function, which comprises a base and a clamping plate assembly, and the clamping plate assembly is used for clamping a soft package battery cell and providing a clamping force for testing; the clamping plate assembly comprises a fixed clamping plate and a sliding clamping plate, clamping screws are arranged at the four corners of the sliding clamping plate and the four corners of the fixed clamping plate, and the clamping force for testing can be adjusted through the clamping screws; two tab grooves are formed in the base, two sets of metal elastic pieces are arranged on the two sides of the tab grooves, and two sets of knob screws are arranged on the two sides of the two sets of metal elastic pieces respectively. And the two groups of knob screw rods are rotated to respectively push the two groups of metal elastic sheets to clamp the two tabs of the soft package battery cell inserted into the tab grooves. According to the utility model, the two groups of independent knob screws can respectively push the two groups of metal elastic sheets to clamp the tabs of the battery cell, so that the tabs are ensured not to be influenced by twisting force, and the tabs are effectively prevented from being broken.

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 invention relates to the technical field of batteries, and discloses a battery cell and a soft package battery. The tabs are arranged on at least one side of the pole group and extend along the length direction of the pole group; the plurality of tabs are formed by at least extending from the first end surface of the pole group and extend along the length direction of the pole group, and the plurality of tabs are stacked along the thickness direction of the pole group; the plurality of tabs are folded in the thickness direction to form folded tabs, and the surfaces, close to the first side surface of the electrode group, of the folded tabs form folded surfaces; the included angle theta formed by the tabs on the two sides of the folded tabs is more than or equal to 85 degrees and less than or equal to 165 degrees; the distance A from the furling surface to the first side surface satisfies 0 < = A < = 10 mm, and 0 < = (A + 0.5 t) / T < = 0.5. According to the invention, the positions of the folded tabs can be in a reasonable interval relative to the first end face of the pole group, so that the space arrangement of the battery cell is convenient to optimize, the waste of materials is reduced, and the overall performance of the battery cell is improved.

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 batteries and discloses a battery device and a power utilization device.The battery device comprises a box body, a battery pack and a protection part, the battery pack is arranged in the box body and comprises a U-shaped shell and a plurality of soft package battery monomers, and the soft package battery monomers are arranged side by side; the U-shaped shell wraps the plurality of soft package battery monomers around three of the four circumferential sides of the plurality of soft package battery monomers, the remaining side of the four circumferential sides of the plurality of soft package battery monomers is exposed through the open end of the U-shaped shell, and the protective part wraps the end part of the U-shaped shell around the edge of each wall body in the circumferential direction of the open end of the U-shaped shell; and the U-shaped shell is arranged between the wall body and the box body and between the end part of the U-shaped shell and the soft package battery monomer. Therefore, the protection piece can separate the end part of the U-shaped shell from the soft package battery monomer, so that the possibility that the soft package battery monomer is scratched by burrs at the end part of the U-shaped shell in the assembling process of the battery device is reduced, and the reliability of the battery device is improved.

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.