38516results about "Cell component details" patented technology

Provided in the embodiments of the present application are an energy storage apparatus, an energy storage system and a charging network. The energy storage apparatus comprises a container, a control module and a thermal management module, wherein the container comprises a container body and a plurality of battery cells, the plurality of battery cells are accommodated in the container body, and at least one of the dimensions of the container in the length direction, the width direction and the height direction is not equal to a corresponding dimension of a standard container; the control module is used for electrically connecting to the plurality of battery cells to perform electrical control over the battery cells; and the thermal management module is connected to the container, the thermal management module is used for managing the temperature of the battery cells, and at least part of the thermal management module is located at the top of the container. When the total energy of a container is fixed, the container can have a smaller volume, such that an energy storage apparatus occupies a smaller floor area, thereby increasing energy per unit floor area of the energy storage apparatus, and thus increasing the areal energy density of the energy storage apparatus.

The battery pack includes an enclosure including interconnected walls, one or more battery cells contained within the enclosure, and a heat-conducting plate defining one or more of the interconnected walls and being structurally load-bearing. The heat-conducting plate has a first section, the one or more battery cells in heat exchange relationship with the first section, and a second section in heat exchange relationship with the first section. The second section is in heat exchange relationship with an environment outside the enclosure for providing heat exchange between the one or more battery cells and the environment.

An energy storage device and an energy storage system. The energy storage device comprises a first module (1) and a second module (2). The first module (1) comprises a first compartment body (11) and a first battery device (12), wherein the first compartment body (11) accommodates the first battery device (12). The second module (2) comprises a second compartment body (20) and a first heat exchange assembly (220), wherein the second compartment body (20) accommodates the first heat exchange assembly (220). The second module (2) is stacked on the upper side of the first module (1), and the second compartment body (20) is connected to the first compartment body (11). In the structure described above, since the energy storage device comprises the first module (1) and the second module (2), which are stacked, and the first module (1) and the second module (2) comprise the first compartment body (11) for accommodating the first battery device (12), and the second compartment body (20) for accommodating the first heat exchange assembly (220), respectively, during assembly of the energy storage device, it is only necessary to connect the first compartment body (11) in the assembled first module (1) to the second compartment body (20) in the assembled second module (2), without needing to install each functional component of the energy storage device at an installation site, thereby being conducive to improving the installation convenience of the energy storage device.

This method, for joining a collector plate and a winding electrode group 2 comprising a separator and electrode plate stacked and wound together, involves pressing a jig 32 against the ends of the electrode plates, which are arranged in the radial direction of the electrode group 2, displacing the jig 32 on a curved trajectory so as to bend the ends such that the amount of displacement towards the electrode group 2 gradually increases and the amount of displacement in the radial direction gradually deceases, and joining the bent ends and the electrode plates.

The present invention relates to the technical field of batteries, and provides a battery cover plate, a battery and a battery pack, the battery cover plate comprises: a cover plate body provided with a through hole; the sealing plate is arranged at the through hole, and the sealing plate is in sealing connection with the through hole; the boss is arranged on the outer side of the sealing plate in the first direction, the boss extends out of the through hole in the first direction, a plurality of convex ribs with closed outlines are integrally formed on the end face of the side, away from the cover plate body, of the boss, and the first direction is the thickness direction of the cover plate body; the surface area of the outer surface of the boss is increased through the existence of the convex ribs, meanwhile, the heat dissipation area of the battery cover plate is greatly increased, heat generated by a system can be rapidly conducted and dissipated in the charging and discharging process of the battery, the working temperature of the battery is effectively reduced, the battery can stably adapt to the high-rate rapid charging technical scheme, and in addition, the service life of the battery cover plate is prolonged. Through the design, the surface of the boss can be coated with the structural adhesive, and the bonding area of the structural adhesive and the boss is remarkably increased.

A battery assembly mounting structure for a vehicle includes: a mounting bushing provided in a battery assembly to internally form a communication space in up and down directions; a fastening bolt installed to penetrate the space formed by the mounting bushing in the up and down directions; and a swappable assembly. The swappable assembly is elastically coupled to the mounting bushing and elastically supports the mounting bushing and the fastening bolt between the mounting bushing and the fastening bolt while elastically allowing the fastening bolt to move in a lengthwise direction.

A refuse vehicle includes a chassis including a plurality of rails, a front and rear tractive assemblies coupled to the chassis, and a battery assembly. The battery assembly is coupled to the chassis between the front and rear tractive assemblies. The battery assembly includes a battery housing, a mounting assembly, and a support. The mounting assembly is coupled to the battery housing and the plurality of rails. The mounting assembly includes a isolator configured to stabilize the battery assembly. The support is positioned within the battery housing and extends along a midpoint of the battery housing. The isolator absorbs horizontal and vertical impact forces introduced to the battery assembly.

The utility model discloses a battery device, electrical box and electricity utilization device relates to battery technical field, wherein the battery device includes electrical box and battery monomer, electrical box and battery monomer are electrically connected, electrical box includes mounting shell, battery management module, distribution module and first electrical connection subassembly, mounting shell includes insulating cover body and main shell body, the main shell body includes the insulating cover body and main shell body. The insulating cover body covers the main shell to form an accommodating space; the power distribution module is arranged in an accommodating space on the inner side of the insulating cover body; the battery management module is arranged on the outer side of the insulating cover body; a part of the structure of the first electric connection assembly is embedded in the insulation cover body, and a part of the structure of the first electric connection assembly protrudes out of the inner side and the outer side of the insulation cover body, so that the first electric connection assembly is connected with the power distribution module and the battery management module. According to the technical scheme, the problem that the battery management module and the power distribution module in the battery device occupy large space can be solved.

A system for a boat includes a first guideway installed under a main deck of the boat, a first battery pack coupled to the first guideway under the main deck, and a first actuator configured to move the first battery pack along the first guideway. A controller is electrically and / or signally coupled with the first actuator. A user input device is electrically and / or signally coupled with the controller. The controller is configured to control the first actuator to move the first battery pack along the first guideway in response to an input to the user input device so as to relocate the weight of the first battery pack under the main deck.

The invention discloses a lithium ion battery composite diaphragm, a preparation method and a lithium ion battery, and relates to the technical field of lithium ion batteries. The lithium ion battery composite diaphragm comprises a base membrane and a functional coating arranged on the negative electrode side of the base membrane, the functional coating sequentially comprises an ion conducting layer, a thermal barrier layer and a self-repairing layer from the position close to the base film to the position far away from the base film; wherein the base membrane is a polyimide and aramid nanofiber blended electrostatic spinning membrane; the ion conducting layer comprises a compound of a modified fast ion conductor and polyvinylidene fluoride-hexafluoropropylene; the thermal barrier layer comprises a cross-linked network of boron nitride nanosheets and polybenzimidazole; the self-repairing layer comprises polyurethane microspheres loaded with dynamic disulfide bonds. The composite diaphragm provided by the invention can remarkably inhibit a purple area on the surface of a negative electrode, and enhance high-temperature self-protection and interface self-repairing of the lithium ion battery, so that the cycle and safety performance of the lithium ion battery are remarkably improved.

The invention relates to the technical field of batteries, and discloses a battery pack, a battery device and electric equipment, the battery pack comprises at least two quadrangular prism battery monomers, and a shell of each battery monomer comprises a battery large surface and a first shell surface; the anti-explosion valve is arranged on the first shell surface and is provided with a weak part; the protection sheet is arranged on one side, deviating from the battery cell, of the first shell surface, and the orthographic projection of the plane where the first shell surface is located covers the weak part; the minimum distance between the weak parts on the two adjacent battery monomers is D in the direction perpendicular to the large surface of the battery; in the direction perpendicular to the first shell face, the maximum height from the surface of the side, facing the anti-explosion valve, of the protection piece to the side, facing the protection piece, of the weak part is H; the thickness of the protective sheet is d; the specific heat capacity of the protective sheet is C; d, C, d and H meet the relational expression that 0.5 < = (D.d.C) / H < = 60. According to the battery pack provided by the invention, thermal runaway of the adjacent single batteries caused by thermal runaway is prevented.

The invention relates to the technical field of batteries, and discloses an explosion-proof valve and a battery cell. The explosion-proof valve comprises a valve body; the number of the nicks is n, the nicks are arranged on the valve body, the nicks are located on any side of the valve body in the thickness direction of the valve body, the residual thicknesses of the nicks are sequentially decreased from the first nick to the nth nick, and n is larger than or equal to 2. According to the explosion-proof valve, the plurality of nicks are arranged on the valve body, and the residual thicknesses of different nicks are different, so that positions corresponding to different nicks can be broken under different pressures, the explosion-proof valve can be opened from different positions under different pressures, a multi-stage exhaust passage is formed, effective exhaust and pressure relief during thermal runaway of a battery cell are facilitated, and the explosion-proof effect is improved. The problem that the explosion-proof valve cannot be opened due to deformation of the battery cell or unstable gas production rate in the traditional design form of a single nick is avoided, effective exhaust and pressure relief when the safety of the battery cell fails are facilitated, and the safety of the battery cell is improved.

The invention relates to a connecting device (1) for electrically connecting at least two terminals, comprising: - at least one connecting element (2) designed for conducting current between the at least two terminals, with at least two contact areas (2a, 2b) for electrical and mechanical connection to the respective terminal, wherein the connecting element (2) comprises a metallic material (3) and a passivation layer (4) that forms at least in one fault condition and encloses the metallic material (3), and - a flux (8) that can be thermally activated by heat input due to a fault condition, which is designed to remove the passivation layer (4) in order to cut through the connecting element (2) in the molten area (2c) in the case of a fault condition that melts only the metallic material (3).

The invention discloses a dry-process high-temperature-resistant lithium battery diaphragm and a preparation method thereof, and relates to the technical field of lithium battery diaphragms. The specific preparation method comprises the following steps: activating and cross-linking polypropylene, polyimide, a PP-b-PI block copolymer and a cross-linking agent BIBP under the protection of nitrogen to prepare a polypropylene-polyimide matrix; after melting, adding a pre-sintered ZrO2-coated Al2O3 core-shell filler, hydroxylated boron nitride and zinc borate, and carrying out double-stage screw extrusion, ultrasonic orientation, nitrogen annealing and cold roller quenching to obtain a mixed melt; carrying out warm stretching and hot air circulation heat treatment to prepare a hard elastic crystal base film; carrying out stretching, thermal relaxation and thermal shaping to obtain a microporous base membrane; after slitting, plasma activation is carried out, epoxy silane and tetraethyl orthosilicate / polybenzimidazole aerogel precursors are sprayed, and a nano closed-pore coating is formed through pre-curing and heat shrinkage curing; and finally eliminating static electricity and rolling to obtain a finished product. The lithium battery diaphragm prepared by the invention is excellent in high temperature resistance and low in thermal shrinkage rate.

A battery pack according to an embodiment of the present disclosure includes a plurality of battery cells, a filler member filled in a space between the plurality of battery cells, and a busbar assembly electrically connected to the plurality of battery cells, and having a filler member injection hole for injecting the filler member.

Provided in the present disclosure are a sodium ion battery, a preparation method for the sodium ion battery, an electrical device and a hard carbon material. The sodium ion battery comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; the negative electrode film layer comprises a hard carbon material. On the basis of measurement using the nitrogen adsorption method, the hard carbon material comprises a porous structure, and the porous structure comprises pores having a pore size of 2 nm-8 nm; on the basis of measurement using the nitrogen adsorption method, the pore volume of the pores having a pore size of 2 nm-8 nm is 0.0004 cm3 / g-0.0040 cm3 / g.

The invention relates to the technical field of power battery manufacturing, in particular to a reconfigurable island type production line system and process of a side face liquid cooling battery module. The system comprises a battery cell grouping module, a module splicing module, a liquid cooling plate processing module and a Block stacking module which operate independently, and a guide carrying system flexibly connected with the modules, and the number and position layout of the modules can be reconstructed according to production requirements. The corresponding production process comprises the following steps: in a reconfigurable island type production line system, flexibly transferring materials through a guide carrying system, and sequentially executing battery cell grouping, module splicing, side surface liquid cooling plate processing and Block stacking. The technical problems that a traditional linear production line is large in occupied area and poor in flexibility, the overall situation is affected by local faults, and the reconstruction cost is high are solved, space is saved, and cooperative improvement of production flexibility and system reliability is achieved.

The invention relates to the technical field of batteries, and discloses a cover plate structure and a battery cell. The cover plate structure comprises a cover plate body, the cover plate body is provided with a plurality of installation through holes arranged at intervals in the X direction, the cover plate body is provided with two first side edges oppositely arranged in the X direction, and the two first side edges are oppositely arranged in the X direction; body areas are respectively formed in areas between two adjacent mounting through holes and between the first side edge and one mounting through hole adjacent to the first side edge on the cover plate body; the plurality of reinforcing ribs are arranged in the body area, the total projection area of orthographic projections of the reinforcing ribs on the cover plate body in the Z direction is S0, the contour area of the cover plate body is S, and S0 / S is larger than or equal to 0.025 and smaller than or equal to 0.06. Therefore, stress concentration can be avoided, the product forming yield can be improved, the structural strength of the cover plate body can be effectively improved, and the risk of abnormal deformation or cracking of the cover plate body and the mounting through holes is reduced.

The invention relates to a battery pack arrangement (40) for a vehicle (10) comprising a battery pack (43, 47, 49) having a first battery module (64) with a first set of battery cells (84), a second battery module (67) with a second set of battery cells (87), and a thermal management member (70) arranged there between, wherein the first battery module and the second battery module are arranged on opposite sides (72, 74) of the thermal management member (70), the thermal management member having a first thermally conductive surface (73) for regulating a temperature of the first battery module and a second thermally conductive surface (75) for regulating a temperature of the second battery module, wherein the battery pack arrangement further comprises a suspension attachment (80) configured to attach the battery pack arrangement in a generally vertical orientation to a vehicle frame (20) of the vehicle.

The present invention discloses a stack cell. The stack cell of the present invention includes an electrode stack; at least one fixing tape wrapped around the electrode stack to secure the electrode stack; and a step-leveling tape attached to the edge of the upper surface of the electrode stack to eliminate the step between the fixing tape and the upper surface of the electrode stack.

Provided are an integrated energy storage unit, an energy storage-power expansion pack, and an energy storage device. The integrated energy storage unit includes an integrated unit case and a first firefighting module. The integrated unit case includes a first battery box housing and a heat sink housing that are detachably connected to each other. A first battery module is fixed in the first battery box housing. An inverter circuit board is fixed in the heat sink housing. The inverter circuit board is configured for a conversion between an alternating current and a direct current and heat dissipation to an exterior environment through the heat sink housing. The first firefighting module is disposed in the integrated unit case. The first firefighting module includes a trigger mechanism, a fire-extinguishing agent storage compartment, and a release mechanism. The trigger mechanism is disposed in a firefighting detection region in the integrated unit case and configured to generate a trigger signal when a firefighting trigger condition in the firefighting detection region is met. The fire-extinguishing agent storage compartment is configured to store a fire extinguishing agent. The release mechanism is configured to, in response to the trigger signal from the trigger mechanism, release the fire extinguishing agent into a chamber where the first battery module is located.

An electrode stack can include a plurality of anode assemblies, each anode assembly including at least one anode layer attached to an anode tab; a plurality of cathode assemblies, each cathode assembly including at least one cathode layer attached to a cathode tab; a plurality of separators; an anode feedthrough bridge arranged to engage each anode tab of each of the plurality of anode assemblies; a cathode feedthrough bridge arranged to engage each cathode tab of each of the plurality of cathode assemblies; an anode feedthrough terminal coupled to the anode feedthrough bridge; and a cathode feedthrough terminal coupled to the cathode feedthrough bridge, wherein the plurality of anode assemblies and the plurality of cathode assemblies are alternately arranged and separated by the plurality of separators to form an electrode stack. A battery is also presented.

The invention discloses a composite diaphragm, a preparation method thereof and a lithium ion battery. The composite diaphragm comprises a base membrane and a composite functional layer arranged on one side of the base membrane, and the composite functional layer is formed by compounding an independent high-temperature-resistant polymer porous membrane and a polytetrafluoroethylene porous membrane. Preferably, the high-temperature-resistant polymer porous membrane comprises one or more of an aramid fiber membrane and a polyimide membrane. By compounding the high-temperature-resistant polymer porous membrane and the polytetrafluoroethylene porous membrane, the overall thinning of the diaphragm is realized on the premise of ensuring excellent mechanical strength and thermal stability, and the ion migration impedance is effectively reduced, so that the rate capability, the cycle life and the safety performance of the lithium ion battery are remarkably improved.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

The invention discloses a cellulose coated diaphragm and a preparation method thereof in the field of lithium ion batteries, the diaphragm comprises alpha-cellulose pulp, a cellulose grafted phenylboronic acid-co-oligomeric ethylene oxide copolymer, a thermal response star zwitterionic polymer and nano aluminum oxide, and an N-methylmorpholine-N-oxide aqueous solution is adopted as a solvent system. The preparation method comprises the following steps: firstly synthesizing a cellulose grafted copolymer with dynamic borate bonds through atom transfer radical polymerization, then preparing a star polymer with thermal response arms and zwitter-ion terminals by taking cyclodextrin as a core, and finally mixing all the components to prepare coating slurry. And the composite diaphragm is prepared through the processes of coating, phase conversion, ultraviolet curing and drying. The diaphragm combines the thermal stability and lyophilic property of cellulose, forms a dynamic self-adaptive interface layer through the synergistic effect of two functional compounds, has the advantages of active safety protection, dendritic crystal inhibition, long cycle life and the like, and remarkably improves the comprehensive performance of the lithium ion battery.

The invention relates to the field of energy storage, and provides a battery module, an energy storage device and electric equipment, and the battery module comprises a battery cell assembly comprising N rows of battery cells; the CCS assembly is fixed on the top surface of the battery cell assembly, the CCS assembly is provided with a plurality of series aluminum bars, first aluminum bars and second aluminum bars, and the series aluminum bars are used for connecting adjacent battery cells in series; the first end plate is fixed on one side of the battery cell assembly along the battery cell arrangement direction, a first fool-proof concave hole is formed in the first end plate, the first fool-proof concave hole is opposite to the first aluminum bar, and the first end plate is made of an insulating material; the fool-proof embedded block is embedded into the first fool-proof concave hole and is clamped with the first aluminum bar; the second end plate is fixed on the other side of the battery cell assembly along the battery cell arrangement direction, a second fool-proof concave hole is formed in the second end plate, the second fool-proof concave hole is opposite to the second aluminum bar, and the second end plate is made of an insulating material. The energy storage density of the battery module can be improved.

The invention relates to a method of coupling a battery cell to a battery cell monitoring and control circuit, the method comprising the steps of: providing a battery cell (10) comprising a multilayer structure comprising two electrode layers (11, 12) separated by a separator layer (17) and two electrically conductive outer faces (13, 14) extending parallel to the layers of the multilayer structure; providing a microcircuit (MC) comprising two connection pads (21, 22) respectively formed on opposite faces or on the same face of the microcircuit, the microcircuit being inserted into a volume defined by two planes respectively comprising an electrically conductive outer face of the battery cell; an electrically conductive connection (25, 26) is formed between each connection pad of the microcircuit and a respective electrically conductive face of the battery cell.

The invention relates to the technical field of nano materials, and particularly discloses a preparation method of surface modified nano calcium carbonate for a battery diaphragm coating. According to the method, the technical paths of microemulsion confinement crystal form regulation and control, gradient surface modification and boehmite compounding and porosity regulation and control are fused, and the functional nano calcium carbonate adaptive to the battery diaphragm coating is prepared. According to the technical scheme, limestone is used as a raw material, after calcination and digestion, the particle size of nano calcium carbonate is controlled through microemulsion carbonization (a cyclohexane-span 80-n-butyl alcohol system); a silane coupling agent KH560-KH570 is adopted for gradient modification to introduce an electrophilic functional group, boehmite is compounded to form a composite coating, and the porosity is regulated and controlled by adjusting the solid content in coating slurry and the coating speed. The method is stable in process and high in compatibility, and meets the requirements of diaphragm coatings of lithium ion batteries and solid-state batteries.

An electric vehicle including a frame; at least one ground-engaging member operatively connected to the frame; an electric motor operatively connected to the at least one ground-engaging member; an electric powerpack supported by the frame, the powerpack including: a battery pack defining a battery cooling channel; and a plurality of battery cells housed in the battery housing; a charger defining a charger cooling channel; an inverter including an inverter cooling channel, the battery cooling channel, the charger cooling channel, and the inverter cooling channel being fluidly connected together by rigid fluid connections; radiators fluidly connected to the battery cooling channel; a cooling circuit being formed at least in part by the battery cooling channel, the charger cooling channel, the inverter cooling channel, and the at least one radiator; and a pump fluidly connected to the cooling circuit for pumping liquid coolant through the cooling circuit.