59results about How to "Avoid thermal runaway" patented technology

This utility model discloses a stacked energy storage device, including a support plate and several energy storage components. Each energy storage component includes an energy storage unit, support legs, and L-shaped limiting plates. The support legs are fixedly installed at the bottom corners of the energy storage units, and the L-shaped limiting plates are fixedly installed at the top corners of the energy storage units. Multiple energy storage units are stacked together, with the support legs of the upper energy storage units inserted into the inner side of the L-shaped limiting plates on the top surface of the lower energy storage units. Multiple limiting frames are fixedly installed on the top surface of the support plate, with the support legs of the lowest energy storage unit inserted into the inner side of the limiting frames. A support plate is fixedly installed on the top surface of the support plate, and multiple insertion holes are provided on the side of the support plate. This utility model allows multiple energy storage units to be stacked together, and the limiting components, in cooperation with the support plate, limit the movement of the energy storage units, preventing them from shifting.

The present application relates to the field of wisdom agriculture and image recognition technology, specifically to a crop disease and pest monitoring system based on image recognition, comprising: an environment perception module, which obtains the environmental context parameters of the monitoring area through multi-modal sensor nodes; a multi-source context analysis module, which constructs a disease and pest outbreak risk model in combination with historical disease and pest distribution spatio-temporal data and calculates the disease and pest risk level; an adaptive strategy generation module, which dynamically reconstructs the image acquisition mode and feature extraction strategy according to the risk level and the edge side resource constraint state, and generates adaptive perception instructions; an image acquisition execution module, which adjusts the physical acquisition parameters and algorithm calculation density of the visual sensor in response to the instructions, and executes image acquisition and recognition; the present application breaks the traditional rigid acquisition mode and realizes the optimal balance between monitoring efficiency and device survival period.

This invention relates to the field of battery technology, specifically to a composite negative electrode current collector, its preparation method, and its application. The composite negative electrode current collector of this invention includes a polymer material layer, a lithium replenishment layer, and a conductive metal layer. The lithium replenishment layer is located on at least one surface of the polymer material layer, and the conductive metal layer is located on the surface of the lithium replenishment layer away from the polymer material layer. The lithium replenishment layer includes a composite lithium material comprising a lithium metal core and a lithium compound coating layer covering the surface of the lithium metal core. The conductive metal layer has multiple through-hole structures. The composite negative electrode current collector of this invention, through the coordination of its various layer structures, is beneficial for improving the storage performance of the negative electrode, reducing battery impedance, shortening the electrolyte wetting time, enhancing lithium replenishment capacity, preventing the formation of lithium dendrites, and improving battery safety performance.

The invention relates to a method (10) for classifying battery cells (1100) of a battery pack (1001) for their cell health. In the method (10), a cell voltage (VZell) and a current (IZell) corresponding thereto are captured for each battery cell (1100) to be classified. An internal resistance (iR) of the respective battery cell (1100) is thus determined. Based on the determined internal resistance (iR), for each battery cell (1100), when the deviation [Delta] iR of the respective internal resistance (iR) relative to the internal resistance reference value (iRW) is within a normal range, it is then classified as healthy. In this case, the internal resistance reference value (iRW) is set to vary over time. The classification of the battery cells (1100) is output in the form of a classification result (KE). The invention also relates to a computer program product, a device (100) and a battery system (1000), each implementing the aforementioned method (10).

The application provides a preparation method of 3,7-dinitro-1,3,5,7-tetraazabicyclononane, comprising the following steps: 1) feeding a first material comprising urea and concentrated sulfuric acid and a second material comprising fuming nitric acid and concentrated sulfuric acid into a microchannel reactor to perform a first-stage nitration reaction, to obtain a first-stage nitration reaction liquid; 2) feeding the first-stage nitration reaction liquid into a first tubular reactor to perform a second-stage nitration reaction, to obtain a second-stage nitration reaction liquid; 3) feeding the second-stage nitration reaction liquid and water into a second tubular reactor to perform a hydrolysis reaction, to obtain a hydrolysis liquid; 4) feeding the hydrolysis liquid and a third material comprising polyoxymethylene and ammonia water into a third tubular reactor to perform a condensation cyclization reaction, to obtain 3,7-dinitro-1,3,5,7-tetraazabicyclononane. The preparation method has the advantages of high safety, less waste pollution and simple operation.

The application provides an electrolyte and a battery comprising the electrolyte, wherein the diazonium salt compound in the electrolyte can be decomposed in advance to generate a large amount of inert gas before a large amount of organic solvent is volatilized to generate gas during a furnace temperature test, and the inert gas is discharged from the pole lug, so that the generated heat is timely released, heat accumulation in the interior is avoided, and heat runaway is avoided; on the other hand, the volatilization of the organic solvent can cause the ion channel in the battery to be closed, so that the side reaction is stopped, the battery can safely pass the furnace temperature test, and the safety of the battery under the condition of heat runaway is significantly improved. Meanwhile, the electron-deficient B element in the diazonium salt compound in the electrolyte has Lewis acidity, can accept an electron pair, can remove HF in the electrolyte, avoids the damage of HF to the interface protection film, and further improves the high-temperature storage performance of the battery.

The application belongs to the technical field of power batteries, and discloses a battery module and an electric vehicle. The battery module comprises a box body, a longitudinal beam and a tray. The box body is provided with an exhaust port; the longitudinal beam is arranged in the box body and abuts against the bottom surface of the box body to separate the accommodating areas on both sides of the longitudinal beam along the width direction in the box body; the tray is arranged in the accommodating area and is used for mounting a battery cell; the tray is provided with a through hole opposite to one end of the battery cell; the tray and the bottom surface of the box body are arranged at intervals to form a pressure relief cavity; the through hole and the exhaust port are both communicated with the pressure relief cavity. The accommodating areas on both sides of the longitudinal beam in the box body are separated by the longitudinal beam, so that the gas and the ejecta discharged by the battery cell in thermal runaway do not contact the battery cell in the accommodating area on the other side, and the battery cell in the accommodating area on the other side is prevented from being affected to cause the battery cells in the whole box body to be in thermal runaway.

This invention belongs to the field of lithium metal battery technology, specifically relating to a fluorinated phase-separated polymer ion gel electrolyte, its preparation method and application, and lithium metal batteries. The fluorinated phase-separated polymer ion gel electrolyte provided by this invention comprises a solid phase and a liquid phase; the solid phase is a copolymer of a fluorinated acrylate monomer and a crosslinking agent containing carbon-carbon double bonds; the liquid phase comprises an ionic liquid and a lithium salt dissolved in the ionic liquid. Compared to liquid electrolytes and traditional SPEs, the fluorinated phase-separated polymer ion gel electrolyte provided by this invention has high ionic conductivity, mechanical strength, interfacial stability, and safety. It can effectively suppress the growth of lithium dendrites and adapt to large volume changes, avoiding short circuits and thermal runaway in lithium metal batteries under conditions of overcharging, over-discharging, or mechanical impact.

The utility model provides a battery, a battery pack and an energy storage system, and belongs to the technical field of batteries. A battery cover plate and a battery shell of the battery are connected and matched to form a closed cavity for accommodating a battery cell. The battery cover plate comprises a cover plate and an insulating base plate which are laminated, a valve hole penetrating through the cover plate and the insulating base plate, and an anti-explosion valve for sealing the valve hole, the explosion-proof valve comprises a valve plate and an insulating fireproof layer which are sequentially distributed along the axis direction of the valve hole, the insulating fireproof layer is closer to the battery core relative to the valve plate, the insulating fireproof layer is provided with a tearing line, the tearing line comprises a plurality of holes which are arranged at intervals, and the insulating fireproof layer is a fireproof crack piece which can be cracked based on the tearing line and can be expanded outwards along the radial direction. And the fireproof splinters can cover metal at the valve hole when being unfolded, which comprises at least one of the inner wall of the valve hole, the plate surface of the cover plate located at the outer side of the valve hole and the rupture valve plate, so that the risk of fire caused by friction between the active substance and the metal at the valve hole is reduced, and the thermal runaway of the aggravated battery cell is avoided.

The invention relates to the technical field of secondary batteries, in particular to a temperature self-adjusting electrode and a secondary battery. The electrode comprises an active material and a composite phase change material, wherein the composite phase change material comprises a first phase change microcapsule and a second phase change microcapsule; wherein the phase change temperature t1 of the first phase change microcapsule is more than or equal to 5 DEG C and less than or equal to 45 DEG C, and the phase change enthalpy Q1 is 100-235J / g; the phase change temperature t2 of the second phase change microcapsule is 20 DEG C lt; t2-t1 < = 155 DEG C, and the phase change enthalpy Q2 meets the following condition: Q2-Q1 < = 200J / g is greater than or equal to 5J / g. According to the electrode provided by the invention, temperature self-adjustment under different working conditions is realized, temperature change is controlled, the service life of the battery under a wide temperature range working condition is prolonged, and meanwhile, thermal runaway of the battery is prevented.

The utility model provides a battery pack, which mainly solves the problem that potential safety hazards are generated after thermal runaway smoke in the existing battery pack is exhausted. The battery pack comprises a box body and a battery module, an inner cavity of the box body is divided into a battery bin and an isolation bin through a partition plate. First isolation liquid is arranged in the battery compartment, and the battery module is arranged in the first isolation liquid; second isolation liquid is arranged in the isolation bin; when the battery module in the battery compartment is subjected to thermal runaway, the first isolation liquid prevents thermal runaway flue gas in the battery compartment from influencing the single batteries which are not subjected to thermal runaway, and meanwhile, the first isolation liquid enters the thermal runaway single batteries to prevent the thermal runaway single batteries from continuously generating thermal runaway; the thermal runaway flue gas in the battery bin enters the isolation bin through the flue gas channel, and the second isolation liquid cools the thermal runaway flue gas, so that the discharged thermal runaway flue gas is not easy to burn, and the safety of the battery pack during use is improved.

The invention relates to the technical field of fluororubber processing, in particular to a fluororubber sealing element resistant to electrolyte corrosion and a preparation method of the fluororubber sealing element. The fluororubber is prepared from the following raw materials in parts by weight: 100 parts of fluororubber, 10-15 parts of polytetrafluoroethylene micro powder, 4-8 parts of an acid acceptor, 5-7 parts of magnesium-aluminum hydrotalcite, 3-5 parts of polyhedral oligomeric silsesquioxane, 35-40 parts of inorganic filler, 30-35 parts of carbon black, 8-10 parts of an active agent, 2-5 parts of a peroxide vulcanizing agent and 2-5 parts of a cross-linking agent. The fluororubber is composed of low-fluorine-content binary fluororubber and a polyvinylidene fluoride-hexafluoropropylene copolymer, through the synergistic effect of all the components, the volume swelling rate of the sealing element is controlled to be 8% or below under the condition that the sealing element is soaked in an electrolyte at the temperature of 85 DEG C, and the compression set is reduced to be within 15%; and after accelerated aging for 1000 hours, excellent elastic recovery capability and interface sealing pressure are still maintained. The sealing element has the wide temperature range adaptability of-20 DEG C to 200 DEG C and good mechanical strength, and the problem of size instability caused by swelling and softening of traditional fluororubber is effectively solved.

The utility model relates to an insulating film structure, a battery and an electric device. An insulating film structure is used for coating a battery cell, the battery cell comprises a plurality of stacked roll cores, and the insulating film structure comprises an insulating film base body, a plurality of insulating layers and a plurality of insulating layers, flame retardant is arranged in the bag bodies, and the bag bodies are arranged on the side, used for being in contact with the battery cell, of the insulating film base body. The bag body is accommodated in the insulating film, when the battery cell is impacted, the bag body is broken, or when the battery cell is abnormally high in temperature, the bag body melts, and the flame retardant can be released into the battery cell, so that the conductivity of the battery is reduced, and short circuit and delay of the battery or thermal runaway of the battery are avoided.

The application discloses a kind of based on inflation plate's spray type liquid cooling battery energy storage cabinet and control method, including energy storage cabinet cabinet and heat management module, the battery pack containing electric core is placed in the energy storage cabinet cabinet inside, spray cooling module, fire-fighting module, control module and energy storage converter module;It also discloses a kind of control method simultaneously, so that electric core works at optimum temperature, guarantees electric core safety, prolongs electric core life;Adopt spray liquid cooling mode, contact thermal resistance is lower, surface temperature uniformity is better;Each module is using module integration design, space structure is compact, installation mode is simple, flexibility is high, adapts to different size energy storage battery pack.

The utility model relates to the technical field of batteries, and discloses a temperature control structure of a lithium battery, which comprises a shell, the top of the shell is fixedly connected with a top cover, the middle of the top cover is fixedly connected with a positive electrode, the bottom of the shell is fixedly connected with a negative electrode, and the inside of the shell is fixedly connected with a metal hollow rod. A roll core is arranged in the shell, cooling fins are fixedly connected to the outer side of the metal hollow rod, a cooling chamber is fixedly connected to the interior of the shell, a cooling pipe is fixedly connected to the interior of the cooling chamber, a dustproof cover is arranged at the top of the cooling chamber, and an opening and closing assembly is arranged in the cooling pipe. The heat dissipation effect is controlled according to the temperature change. According to the utility model, through the cooperation of the radiating fins, the metal hollow rods, the radiating holes, the radiating pipes, the sliding blocks, the radiating grooves, the radiating chambers and other structures, the rapid active heat transfer is realized, the temperature gradient is reduced, the thermal runaway is prevented, and the safety is improved.

The embodiment of the application provides a battery pack and an electric device, which comprise a box body, a plurality of single batteries and a plurality of shielding assemblies; the box body is provided with a plurality of mutually independent containing cavities, the box body comprises a bottom plate and a side plate extending along the circumference of the bottom plate, at least one of the bottom plate and the side plate is provided with a plurality of first through holes, and at least one first through hole is communicated with one containing cavity; at least one single battery is arranged in one containing cavity, the single battery is provided with an explosion-proof valve, the explosion-proof valve is arranged opposite to the first through hole; one shielding assembly is used for covering and sealing one first through hole and is movably connected with the box body, and the shielding assembly is configured to be capable of moving relative to the box body in a direction away from the containing cavity in the case that the explosion-proof valve is actuated, so that the discharge in the containing cavity is discharged. By arranging the shielding assembly, the discharge in the containing cavity can be discharged in time when the explosion-proof valve is actuated, heat loss of other battery units which do not occur heat loss is avoided, and the use safety of the battery pack is improved.

The invention relates to the technical field of lithium ion batteries, and discloses a current collector and a preparation method thereof, an electrode and a lithium ion battery. The current collector comprises a substrate layer, a functional layer and a coating layer, wherein the functional layer is arranged between the substrate layer and the coating layer; the substrate layer is made of an insulating material; the functional layer is of a composite layer structure and comprises metal layers and metal oxide layers which are alternately arranged; and the coating layer is a solid electrolyte layer. The current collector provided by the invention adopts a functional layer structure in which the metal layers and the metal oxide layers are alternated, so that the thermal stability and the safety of the battery under extreme conditions can be improved, and particularly, the current collector has excellent performance in acupuncture, extrusion and short-circuit tests, so that thermal runaway is effectively avoided.

The application relates to a direct-current relay. The direct-current relay comprises a moving spring sheet and an arc striking assembly; the arc striking assembly is arranged on the outer circumferential side of the moving spring sheet and comprises at least one arc striking magnet; wherein the surface of the arc striking magnet facing the moving spring sheet is a curved convex surface. The arc striking assembly can be applied to a scene in which the peripheral magnetic field of the moving spring sheet needs to be increased, can controllably adjust the arc striking strength and effect according to actual application needs, can avoid contact ablation, insulation deterioration, thermal runaway and system-level failure, and can effectively guarantee the safety and reliability of equipment.

The application relates to a diaphragm and an electrochemical device and an electronic device comprising the same, and belongs to the technical field of electrochemical energy storage. The diaphragm comprises a porous substrate and a porous coating on at least one side surface of the porous substrate, and the porous coating comprises fibrous fillers; the fibrous fillers comprise a core layer and a shell layer on the surface of the core layer, the core layer comprises at least one of Mxene and an oxide thereof, MOFs and an oxide thereof, black phosphorus and an oxide thereof, and carbon; the shell layer comprises at least one of silicon dioxide and a lithiumophilic metal oxide; the mass ratio of the shell layer to the core layer of the fibrous fillers is M; the thermal conductivity of the diaphragm is lambda W / (m.K), the specific heat capacity is Cp J / (g.K), and the density is rho g / cm 3 ; the following relationships are satisfied: 0.010 <= (M*lambda) / (2Cp) <= 0.017 and 0.4 <= lambda / (rho*Cp) <= 1.0. The diaphragm can improve the safety performance, cycle life and rate performance of a battery.

The utility model discloses a kind of cooling device and whole package gradient utilization energy storage system, be configured in connecting energy storage box, the inside hollow of energy storage box, cooling device includes: at least one battery tray, at least one cooling component and water tank component, battery tray is connected to the inner wall of energy storage box, the surface of battery tray is formed with first cooling groove, cooling component includes first coil pipe, first coil pipe is embedded in first cooling groove along the orientation of first cooling groove, and abuts at battery pack, water tank component includes water tank and at least one first water pump, water tank is connected to energy storage box, and with the end of first coil pipe is communicated, first water pump is respectively communicated with the inside of water tank and the other end of first coil pipe.The utility model can effectively solve the problem that gradient battery energy storage power station lacks cooling system and cannot regulate or control heat during battery discharging or charging process, leading to security risk in gradient battery energy storage power station.

The invention relates to a method and device for quickly estimating the internal temperature of a battery, and belongs to the field of lithium battery temperature detection.The method comprises the steps that a battery electrochemical-thermal coupling model with impedance output is established to simulate impedance output, and EIS data of the battery in different states are obtained to verify the model; dRT conversion is carried out after the EIS data are verified through K-K, and high-frequency peak area characteristics highly related to the internal temperature of the battery are obtained through correlation analysis; according to the method, low-frequency data is removed, a set frequency sampling range is selected, so that the data volume and the calculation complexity are reduced, a multi-head attention mechanism prediction model based on Transform is established, a complex nonlinear relation is captured, and rapid lossless estimation of the internal temperature of the battery is achieved. According to the invention, an efficient, accurate and non-intrusive temperature monitoring means can be provided, can be conveniently integrated into the existing BMS as a part of temperature monitoring and safety management, and does not need additional complex hardware.

This application provides a battery charging thermal management control method and a new energy vehicle, relating to the field of vehicle management technology. The method includes: responding to a charging start signal from a target vehicle; acquiring the battery temperature, current state of charge (SOC) parameters, and current ambient temperature of the power battery on the target vehicle; determining a target charging thermal management mode from a set of preset charging thermal management modes based on the battery temperature and the current ambient temperature; determining the current target charging current of the power battery based on the battery's operating temperature range, the current SOC parameters, and the target charging thermal management mode; and during the charging process of the power battery, using the target charging thermal management mode to control the thermal management system of the target vehicle to control the temperature of the power battery, ensuring that the battery temperature remains within the corresponding operating temperature range. This application avoids unnecessary energy loss from the power battery, thereby reducing the overall vehicle charging energy consumption.

This invention provides a battery box and a battery pack. The battery box includes a box body, a plurality of first cooling plates, and a fastening assembly; the box body forms a main chamber; the plurality of first cooling plates are spaced apart in the main chamber to divide the main chamber into a plurality of sub-chambers, the plurality of sub-chambers being configured to accommodate battery modules; the fastening assembly is fixedly connected to the box body; wherein the plurality of first cooling plates are detachably connected to the fastening assembly. This invention aims to solve the technical problem in related technologies where the welded joints of the battery box and cooling plates are prone to deformation, affecting the sealing performance.

This invention belongs to the field of batteries, specifically a high-capacity battery assembly. It overcomes the technical challenges of high cost and heavy weight inherent in existing high-capacity batteries. The assembly includes a pressure-bearing casing and a high-capacity battery and heat exchange device located within the casing. The high-capacity battery comprises a shared pipeline and n individual cells arranged along the x-direction, with their internal cavities connected by the shared pipeline. Each individual cell has a plastic casing with a strength P, where P1 ≤ P ≤ P2. P1 represents the strength requirement of the casing during the formation stage and normal charge / discharge stages, while P2 represents the strength requirement during thermal runaway. The pressure-bearing casing has a vent connected to the shared pipeline. The heat exchange device is located at the top of the high-capacity battery, with the polarity terminals of each individual cell passing through it. Compared to finished battery cells, the individual cells of this invention offer advantages in terms of light weight and low cost.

The utility model relates to the technical field of energy storage equipment, in particular to an energy storage cabinet and an energy storage system. The energy storage cabinet is provided with a cabinet bin, a plurality of battery packs, a control device and a connecting pipeline are arranged in the cabinet bin, the battery packs are stacked in the gravity direction and provided with first connecting ports, the control device is arranged at the top of the cabinet bin in the gravity direction and provided with second connecting ports, and the second connecting ports correspond to the first connecting ports. The connecting pipeline is provided with a plurality of first connecting joints, and the first connecting joints are connected with the first connecting ports in a matched mode. Corresponding to the second connecting port, the connecting pipeline is provided with a second connecting joint, and the second connecting joint is connected with the second connecting port in a matched mode. Wherein the connecting pipeline is used for transporting the flame-retardant medium in the control device into the plurality of battery packs. The energy storage system comprises the energy storage cabinet. The pipeline arrangement mode in the energy storage cabinet and the energy storage system is simple, and the occupied space in the cabinet can be saved.

This disclosure provides a battery pack and an electrical device, relating to the field of battery technology. The battery pack includes: a housing, comprising a base plate and a surrounding frame connected to the base plate to form a receiving cavity; a pressure relief valve disposed on the housing and connected to the receiving cavity; and a battery module housed within the receiving cavity, comprising multiple arrayed batteries. The maximum venting capacity of a single pressure relief valve is Q1, the number of pressure relief valves is n, and the peak gas generation rate of a single battery is Qe, satisfying: n×Q1>Qe, and 0.1≤(n×Q1-Qe) / (n×Q1)≤0.7. Accordingly, this disclosure ensures that when any battery experiences thermal runaway and gas generation, the total venting capacity of the pressure relief valves is always greater than the peak gas generation rate of a single battery. This achieves timely pressure relief by the housing's pressure relief valves, ensuring that the high-temperature, high-pressure gas generated inside the battery pack can be discharged promptly, preventing larger-scale thermal runaway.

The utility model relates to the technical field of electrochemical energy storage system protection, in particular to a multi-source information fusion thermal runaway composite detection device which comprises a shell, a cover body is arranged on the upper cover of the shell, a detection cavity is arranged in the shell, and a sound detection assembly is further arranged in the shell outside the detection cavity. One side of the shell is communicated with an air inlet pipe, and the air inlet pipe is communicated with the detection cavity; the sound detection assembly comprises a positioning installation cylinder, a bendable pipe is fixedly installed on the positioning installation cylinder, and a microphone is fixed to the other end of the bendable pipe. The microphone is electrically connected with a signal processing module, and the signal processing module is connected with a controller. According to the utility model, the sound detection assembly, the particle detection assembly, the temperature sensor and the gas sensor are arranged in the device, so that the problem that the safety monitoring and early warning device in the energy storage power station in the prior art cannot detect the chemical reaction of the lithium ion battery in place is solved.

The utility model discloses a new energy battery pack collision protection structure, which belongs to the technical field of new energy batteries, and comprises an assembly seat and an anti-collision plate, the assembly seat is provided with four fixing rings, the upper surface of the anti-collision plate is vertically provided with four vertical rods, the outer surface of each vertical rod is matched with a first spring, and the outer surface of each first spring is matched with a second spring. The outer surface of the top end of the vertical rod is matched with the inner ring of the fixing ring, an arc-shaped energy absorption plate is arranged on the lower surface of the anti-collision plate, and a honeycomb structure is arranged in the arc-shaped energy absorption plate. The problem that it is difficult to effectively buffer and weaken impact force is solved.

The present disclosure provides a sodium-ion battery charging temperature protection circuit, which comprises a first control module, a second control module and a normally closed temperature switch. The control end of the first control module is connected with a charger identification signal end, the first end is connected with the first end of the normally closed temperature switch, and the second end is grounded. The control end of the second control module is connected with the second end of the normally closed temperature switch, the first end is connected with a power supply end, and the second end is connected with a charging output end. The sodium-ion battery charging temperature protection circuit does not rely on an integrated circuit chip for battery protection to achieve temperature protection, and detects the temperature of the sodium-ion battery by using the normally closed temperature switch. When the battery temperature exceeds a safety threshold, the circuit can timely cut off the charging circuit, effectively preventing the sodium-ion battery from appearing thermal runaway phenomenon, improving the safety of the energy storage sodium-ion battery, and avoiding relying on the temperature protection function of the integrated circuit chip, thereby reducing the circuit use cost.

The present invention provides a structure of a battery module, the battery module comprising: a cell stack in which a plurality of pouch-type battery cells are stacked, the plurality of pouch-type battery cells having pouches accommodating electrode assemblies and electrode leads, an electrode lead extending from the electrode assembly and protruding in a length direction to one side of the pouch; and a bus bar assembly disposed on one side of the cell stack in the longitudinal direction and including a bus bar frame having a slit through which the electrode lead passes, and a bus bar disposed on the other side of the cell stack in the longitudinal direction. And a bus bar disposed on one side of the bus bar frame in the length direction and connected to the electrode lead passing through the slit; and a shield member disposed on the other side in the length direction than the bus bar, the shield member including a through hole through which the electrode lead passes, and including a flame retardant material.