2310results about "Vent arrangements" patented technology

Provided in the present application are an energy storage device and an energy storage system. The energy storage device comprises a first compartment and a battery device, wherein the first compartment comprises a first top wall and a first side wall connected to each other; the first top wall is provided with an exhaust mechanism, which can communicate the interior of the first compartment with the outside; and the first compartment accommodates the battery device. Since the first side wall mainly plays a role in supporting and load bearing in the first compartment, and the exhaust mechanism, which communicates the interior of the first compartment with the outside, is arranged on the first top wall instead of the first side wall, the impact of the arrangement of the exhaust mechanism on the structure of the first side wall is reduced, thereby reducing the impact of the arrangement of the exhaust mechanism on the supporting effect and load-bearing capacity of the wall of the first compartment, facilitating an improvement in the stress condition of the energy storage device and facilitating an improvement in the reliability of the energy storage device.

The invention relates to the technical field of batteries, and provides an insulating film, a battery cell and a battery pack, the insulating film comprises a first film group and a second film group; the first film group comprises a first film body, a second film body and a third film body which are connected in sequence, and the second film body is provided with an avoiding hole through which a tab penetrates and a containing table protruding towards one side; two sides of the first membrane group are respectively connected with a second membrane group, and each second membrane group comprises a first folding body, a second folding body and a third folding body; one end of the first film body or the third film body is provided with a first adhesive layer, the second folding body is provided with a second adhesive layer, the first folding body or the third folding body is provided with a third adhesive layer, and the first film body and the third film body can be folded relative to the second film body and connected through the first adhesive layer. And the first folding body, the second folding body and the third folding body of each second film group can be folded relative to the first film group and are connected through the second adhesive layer and the third adhesive layer to form a box body structure. According to the invention, the fixing effect of the pole group in the battery cell is improved.

The invention provides a lithium ion battery safety valve opening and failure early warning method based on expansive force, and belongs to the technical field of lithium ion batteries. Battery expansive force and cycle data under different pre-tightening force conditions are collected, statistical features are extracted to construct a state feature set, health state groups are divided by adopting a fuzzy clustering algorithm, and the early warning result is obtained. Establishing a segmented nonlinear mapping model of the expansive force and the internal pressure, performing wavelet denoising and robust differential calculation on expansive force signals, and optimizing an initial expansive force derivative threshold value by analyzing time dispersion at different heating rates; a multi-scale feature fusion algorithm based on hierarchical attention aggregation is utilized to construct a state self-adaptive early warning model to correct a threshold value, and a four-stage early warning mechanism is set to monitor the opening and failure states of the safety valve. The technical problem that the opening time of the safety valve cannot be accurately predicted and self-adaptive early warning cannot be realized under different battery health states and pretightening force working conditions is solved.

The present disclosure relates to a battery tray and a power battery pack. The battery tray includes a tray body. The tray body includes a base plate and a side beam, and the side beam is disposed around the base plate and defines, together with the base plate, an accommodating space for battery cells. The base plate is formed therein with an air passage, and the base plate is provided with several inlet vents and at least one exhaust vent. The inlet vent is configured to introduce a flame, smoke or gas discharged from the battery cell into the air passage, and the exhaust vent is configured to discharge the flame, smoke or gas inside the air passage.

The utility model provides a cover plate, a battery and electric equipment. The cover plate comprises a cover plate body, an anti-explosion structure and a copper layer, the anti-explosion structure is arranged on the cover plate body, the copper layer is arranged on at least one side of the cover plate body and covers the anti-explosion structure, and the cover plate body and the copper layer are made of different materials. According to the cover plate, the cover plate body is provided with the copper layer, the copper layer can prevent the cover plate body from being corroded, and the anti-corrosion performance of the cover plate body is improved. The anti-explosion structure is covered with the copper layer, the anti-corrosion performance of the anti-explosion structure can be improved, the situation that the opening force is inconsistent due to the fact that the anti-explosion structure is corroded is avoided, and the consistency of the opening force of the anti-explosion structure is guaranteed. And meanwhile, the heat conductivity of the copper is higher, so that the heat dissipation of the battery is facilitated.

The utility model relates to the technical field of batteries, and provides a battery cell bracket, a battery module and a battery pack. The battery cell bracket comprises a bracket body, the frame body is provided with a mounting groove. The mounting groove is configured to mount a battery cell. And a pressure relief hole is formed in the groove bottom surface of the mounting groove. And the pressure relief hole corresponds to the position of an anti-explosion valve of the battery cell. The frame body is connected with a flow guide part which is arranged in a protruding mode in the direction away from a groove opening of the installation groove. The flow guide piece covers part of the pressure relief hole. The flow guide piece is configured to enable gas to be discharged in the preset direction after passing through the pressure relief hole. Therefore, gas generated in the battery cell can be discharged out of the bracket body from the pressure relief hole after overflowing from the anti-explosion valve, so that potential safety hazards caused by accumulation of the gas in the battery cell bracket are prevented, and the safety of the battery module is improved.

The invention provides a battery pack upper cover, a battery pack and a vehicle, and relates to the technical field of batteries, the battery pack upper cover comprises a cover body, the cover body comprises a metal layer and a protective layer, the metal layer is provided with a preformed hole penetrating through the metal layer in the thickness direction of the metal layer, and the preformed hole is suitable for corresponding to a pressure relief hole of a battery module of the battery pack. On a projection plane orthogonal to the up-down direction, the projection outer contour of the pressure relief hole is located on the inner side of the projection outer contour of the preformed hole, and the thickness direction of the metal layer is consistent with the up-down direction; the protective layer is connected with the metal layer, at least part of the protective layer covers the reserved hole, and high-temperature smoke sprayed out of the pressure relief hole can damage the part, covering the reserved hole, of the protective layer so that the reserved hole can be communicated with the outside. According to the invention, high-temperature flue gas can be quickly discharged when the battery cell is in thermal runaway, so that the pressure relief of the battery module is realized, the overall structure is simple, and the manufacturing cost is low.

The invention discloses a multi-dimensional heat management and safety protection system for an electric bicycle battery replacement cabinet, and belongs to the technical field of heat management of electric bicycle heat exchange stations. According to the system, through a multi-dimensional thermal management framework of a phase change material plate, a liquid cooling plate and a wide-temperature-range heat pump, temperature, pressure and smoke multi-sensor monitoring and layered regulation and control of a thermal management subsystem are combined, so that accurate control over the temperature in a battery bin and early warning of battery thermal runaway are achieved; meanwhile, the safety of battery replacement operation is guaranteed by means of a linkage control mechanism of a front bin door and a rear bin door, a catapulting device composed of a compressed carbon dioxide gas storage tank, an electromagnetic valve, an I-shaped pushing rod and an air cylinder is matched, a fault battery can be rapidly pushed into a fire-fighting bin when a thermal runaway signal is detected, a full-link safety protection system is formed from early warning, temperature control to emergency disposal, and the safety of the battery replacement operation is guaranteed. The problems that an existing battery replacement cabinet is uneven in battery heat dissipation, lagged in thermal runaway response and single in safety protection are effectively solved, and the operation safety and reliability of the electric bicycle battery replacement cabinet are remarkably improved.

The invention relates to the technical field of batteries, and provides an insulating film, a battery cell and a battery pack, the insulating film comprises a first film group and a second film group; the first film group comprises a first film body, a second film body and a third film body which are connected in sequence, and the second film body is provided with an avoiding hole through which a tab penetrates and a containing table protruding towards one side; the two sides, in the second direction, of the first membrane set are each connected with a second membrane set, and each second membrane set comprises a first turnover body, a second turnover body and a third turnover body. Wherein one end, deviating from the second film body, of the first film body or the third film body and the first folding body or the third folding body are provided with supporting ribs, the first film body and the third film body can be folded relative to the second film body and connected with each other, and the first folding body, the second folding body and the third folding body of each second film group can be folded relative to the first film group and connected with each other. And the first membrane group and the two second membrane groups are encircled to form a box body structure. According to the invention, the shell entering yield and the exhaust effect of the battery cell are improved, and the safety performance of the battery cell is improved.

The utility model belongs to the technical field of batteries, and discloses a battery pack and electric equipment. The battery pack specifically comprises a battery box body and a battery cell stack, wherein the battery box body is provided with a mounting cavity; the battery cell pile is arranged in the mounting cavity and comprises a plurality of battery cell monomers which are stacked in the first direction, each battery cell monomer comprises a convex part at the top and a groove part, an anti-explosion valve is arranged on the top wall of each convex part, and a battery cell pole is arranged on the bottom wall in each groove part; wherein the battery box body is internally provided with a pressure relief channel extending along a first direction, and the pressure relief channel is arranged opposite to the anti-explosion valve, so that the pressure relief channel can receive thermal runaway products discharged by the anti-explosion valve. According to the battery pack, the use safety of the battery pack can be improved, electric connection parts of the battery cell monomers cannot be damaged during thermal runaway, the space utilization rate of the battery pack is improved, and the energy density is favorably improved.

The utility model discloses a power battery pack anti-collision box body device with thermal runaway protection. The power battery pack anti-collision box body device comprises a box body for placing a power battery module (8), a front-back buffer structure (1), a passive anti-collision plate, a thermal runaway control device (3), a displacement damping plate (4), a partition plate (5), a cover plate (9), a built-in liquid cooling plate (6) and a phase change material plate (7). According to the device, the design of a front-back buffer structure, a passive anti-collision plate and a displacement damping plate is adopted, so that side edge protection and bottom edge protection measures are provided for the power battery module; according to the utility model, the design of the thermal runaway control device is adopted, so that thermal runaway control is provided for the power battery module; when the vehicle is in use, a refrigerant and a deoxidant in the execution module are triggered to operate together, batteries in the subareas are rapidly refrigerated and rapidly extinguished, a one-way pressure release valve is opened to discharge high-temperature and high-pressure gas, and a vehicle alarm device is started to remind people in the vehicle and around the vehicle to get away immediately, so that the life and property safety of people is protected, and an important role is played.

The utility model discloses a battery monomer, a battery device and a power utilization device. The battery monomer provided by the embodiment of the utility model comprises a shell, an electrode assembly and a connecting structure, wherein an electrode terminal is arranged at the end part of the shell; the electrode assembly is arranged in the shell and comprises a main body part and a tab assembly led out from the main body part along a first direction; the connecting structure is connected with the tab assembly and the electrode terminal, the connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, at least part of the first connecting piece extends in the first direction and is connected with the tab assembly, the second connecting piece is connected with the electrode terminal, and a space is formed between the shell and the main body part; the height of the space in the first direction ranges from 5 mm to 40 mm. The reliability problem of the single battery is solved.

The invention relates to the technical field of batteries, in particular to a battery pack and a power utilization device, the battery pack comprises a battery module, a box body, a liquid cooling plate and a bottom protection plate, a pole and an anti-explosion valve are respectively arranged at two ends of a battery cell body in a first direction, and a sealing ring is arranged around the anti-explosion valve. The liquid cooling plate is arranged on one side, in the first direction, of the box body, the anti-explosion valve of the battery cell faces the liquid cooling plate, the liquid cooling plate is provided with a pressure relief hole penetrating through the liquid cooling plate in the first direction, and the sealing ring is pressed between the liquid cooling plate and the battery cell body. The bottom protection plate is arranged on the side, back to the battery module, of the liquid cooling plate, the bottom protection plate comprises a plate body and a flexible supporting part, the flexible supporting part is pressed between the plate body and the liquid cooling plate, an exhaust channel is defined by the flexible supporting part between the plate body and the liquid cooling plate, and the pressure relief hole is communicated with the exhaust channel. According to the battery pack and the electric device provided by the invention, thermal runaway caused by triggering of the adjacent battery cells is prevented, the problem of blow-by isolation failure is solved, and gap redundancy of traditional multi-layer protection is reduced.

The utility model relates to a cap assembly and a cylindrical lithium ion battery. Relates to the technical field of new energy batteries. The explosion-proof device specifically comprises an explosion-proof piece and a top cover plate, the top cover plate comprises a welding protrusion extending upwards and sealing parts arranged on the two sides of the welding protrusion, the sealing parts are stacked on the top of the explosion-proof piece, and a pressure relief area is formed between the bottom of the welding protrusion and the top of the explosion-proof piece; in the vertical direction, the thickness T1 of the sealing part ranges from 0.3 mm to 0.5 mm, and the ratio T2 / T1 of the thickness T2 of the anti-explosion piece to the thickness T1 of the sealing part ranges from 80% to 100%. According to the cylindrical lithium ion battery, the thickness T1 of the sealing part ranges from 0.3 mm to 0.5 mm, and the ratio T2 / T1 of the thickness T2 of the anti-explosion sheet to the thickness T1 of the sealing part ranges from 80% to 100%, so that the sealing performance of the cylindrical lithium ion battery can be guaranteed, the safety performance of the cylindrical lithium ion battery is improved, the anti-explosion performance of the cylindrical lithium ion battery can be guaranteed, and the service life of the cylindrical lithium ion battery is prolonged. And the service life of the cylindrical lithium ion battery is prolonged.

The utility model provides a collector plate, a battery and electric equipment. The flow collecting disc comprises a flow collecting disc body and a turnover piece, a through hole is formed in the flow collecting disc body, the turnover piece is arranged at the through hole, the turnover piece comprises a flow collecting part and a connecting part, the connecting part is connected with the flow collecting part and the flow collecting disc body, the partial thickness of the connecting part is smaller than the thickness of other parts of the connecting part, and / or the turnover piece is arranged on the flow collecting disc body. The thickness of at least part of the connecting part is smaller than that of the collector plate body, and / or the thickness of at least part of the connecting part is smaller than that of the collector part. According to the collector plate, the turnover piece is easier to turn over, the turnover angle of the turnover piece is guaranteed, and the unfolding effect of the collector plate is improved.

The invention relates to the field of batteries, in particular to a battery module, a battery pack and electric equipment.The battery module comprises a battery pack and at least one end plate, the battery pack comprises at least two soft package battery monomers arranged in the first direction, and the battery pack is provided with two opposite first end faces; a first shell and a second shell of the shell of the soft package battery monomer are connected in a bonding manner to form a sealing edge; the end plate is arranged on the first end face of the battery pack, the sealing edge and the end plate are oppositely arranged, the end plate is provided with a protruding part protruding away from the soft package battery single body, and the bottom wall of the protruding part is provided with a through hole penetrating through the bottom wall; the orthographic projection of the through hole on the first end surface is at least partially overlapped with the orthographic projection of the sealing edge of the at least one soft package battery monomer on the first end surface; the bottom wall of the convex part and the sealing edge of the soft package battery monomer are arranged at an interval in a second direction, so that an air storage cavity is formed between the bottom wall of the convex part and the sealing edge of the soft package battery monomer, and the second direction is vertical to the first end surface.

The present invention relates to the technical field of batteries, and provides a battery module and a battery pack, the battery module comprises: a plurality of battery cells, each battery cell comprises a housing, a pole and an explosion-proof valve, the housing has a first end face, the pole and the explosion-proof valve are arranged on the first end face, and the plurality of battery cells are sequentially arranged along the width direction of the first end face; the terminal posts of the two battery cells arranged in the width direction are connected through the busbar, one side, far away from the first end face, of the busbar is used for being attached to a box body of the battery pack through glue, a bent part is arranged on the part, located between the two terminal posts, of the busbar, and a glue overflowing groove is formed in the position, corresponding to the bent part, of one side, far away from the first end face, of the busbar. The bending part can prevent the welding part between the busbar and the pole from being torn when the battery cell expands, and can reduce or prevent glue from overflowing to the first end face when the busbar and the box body are attached through the glue, so that the problem that the anti-explosion valve on the first end face cannot be opened due to the fact that the glue covers the anti-explosion valve is solved.

Battery, including: a box body; a battery cell which is received in the box body, wherein the battery cell comprises a housing and an electrode arrangement received in the housing, wherein the housing comprises two first side walls which are arranged opposite each other along the thickness direction of the battery cell; a heat exchange element that is arranged on at least one side of the battery cell along the thickness direction and serves for heat exchange with the first side wall, wherein the electrode arrangement comprises a positive electrode sheet, a negative electrode sheet and a separator arranged between the positive and negative electrode sheets, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector, wherein the positive electrode film layer comprises a positive electrode active material, wherein the positive electrode active material comprises a lithium-containing phosphate with an olivine structure, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer arranged on at least one side of the negative electrode current collector, wherein the negative electrode film layer comprises a negative electrode active material, wherein the negative electrode active material comprises a carbon-based material.

The utility model relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate is characterized in that a cover plate main body is provided with an exhaust hole, a convex boss surrounding the exhaust hole is formed on the cover plate main body, and a groove communicated with the exhaust hole and the outside of the battery cell is formed in the boss; the pressure relief assembly comprises a pressure relief piece and a protection piece. The pressure relief piece is arranged at the exhaust hole; the protection piece is arranged on one side of the cover plate body and covers the exhaust hole, and at least part of the groove is not shielded by the protection piece. The bosses in the battery cell cover plate can effectively prevent electrolyte from entering the pressure relief piece, prevent the electrolyte from being in contact with the protection piece, and prevent the situation that the viscosity of the protection piece is reduced and the protection piece falls off due to electrolyte pollution, so that the process yield and the production efficiency of the battery cell are improved.

A venting unit for a battery case, the venting unit comprising a housing part delimiting a vent opening, and a membrane assembly spanning across the vent opening and comprising a membrane carrier comprising carrier segments and flow windows respectively disposed through the carrier segments, and membrane segments respectively covering the flow windows. Each adjacent pair of the carrier segments is folded against one another along a film hinge disposed therebetween.

A battery pack is configured such that, when gas is generated inside a battery module, high-temperature gas is discharged to the outside of the battery pack without affecting other adjacent battery modules. The battery pack includes a pack housing, a first battery module, a second battery module, and a pack cover.

Mobile container (1) for charging at least one battery (2), comprising an enclosure (3) that defines a cargo space (4) and has a closable charging opening (5), a battery charging station (10) arranged in the cargo space (4) which has a receptacle (11) for an energy converter (12) and a battery receptacle (13) into which a battery (2) can be inserted via the charging opening (5), wherein a power supply system (30) is arranged within the cargo space (4) which can be electrically connected to the energy converter (12), wherein a ventilation system (20) is provided to extract gases generated during the charging process of the battery (2) from the cargo space (4), wherein the ventilation system (20) has a monitoring unit (24) to check an airflow in the ventilation system (20), wherein the power supply system (30) is de-energized if the airflow falls below a limit value, wherein the Battery charging station (10) has a base element (16),on which the energy converter (12) can be positioned, wherein the base element (16) is arranged above the battery receptacle (13), wherein a collection device (6) is arranged below the battery receptacle (13) to collect any medium that may escape from the battery (2) and / or the energy converter (12), wherein the battery receptacle (13) has through-openings so that any medium that may escape from the battery (2) can enter the collection device (6), wherein the battery receptacle (13) has a support surface (14) for the battery (2) which makes it possible to move the battery (2) translationally in the battery receptacle (13), wherein the support surface (14) has movably mounted transport elements (15), wherein a plurality of battery charging positions (10) are provided within the charging space (4), wherein the transport elements (15) are rollers for moving the individual batteries (2) within the respective battery charging position (10).

The invention discloses a safety type mobile energy storage power supply which comprises a shell, a battery cell assembly and a safety device. The battery cell assembly is accommodated in the shell, an accommodating cavity is formed in the bottom of the shell, and the accommodating cavity is communicated with the interior of the shell; the safety device is detachably accommodated in the accommodating cavity, and the safety device is used for controlling the flue gas of the abnormal battery cell assembly and sending out a physical vibration type alarm sound at the same time. According to the safety type mobile energy storage power supply, when the battery core assembly is in a normal state, a user can freely breathe and ventilate, when the battery core assembly is abnormal and generates high-temperature and high-pressure flue gas, energy contained in the high-temperature and high-pressure flue gas is used for alarming, and meanwhile the generated high-temperature and high-pressure flue gas can be effectively filtered.

The present invention relates to a battery cell array capable of increasing cooling efficiency, and a battery pack and a vehicle comprising same, and provides a battery cell array, and a battery pack and a vehicle comprising same, the battery cell array comprising: a plurality of battery cells; and a side frame which supports the plurality of battery cells and forms the edge of the battery cell array, wherein the plurality of battery cells are directly cooled at one end in the height direction of each of the battery cells.

A battery cell includes a housing defining a battery cell space within the housing, a cathode disposed within the battery cell space, an anode disposed within the battery cell space, a reference electrode disposed within the battery cell space, and electrolyte disposed within the battery cell space and in contact with the cathode, the anode, and the reference electrode. The housing has a gas analysis port in fluid communication with the battery cell space and extending to an exterior of the housing.

Provided is a system for predicting a time of occurrence of gas emission of a battery cell including a platform portion having a sealed portion and disposed on at least one side of a pouch-type battery case and an electrode lead protruding from an end of the platform portion, the system including a storage unit for collecting data on a time of occurrence of gas emission according to a width of a remaining sealed portion; a measurement unit for periodically measuring the width of the remaining sealed portion of the battery cell to be measured; and a determination unit for predicting the time of occurrence of gas emission of the battery case to be measured by comparing the measured width of the remaining sealed portion with the collected data.

The utility model relates to the field of brackets, in particular to a battery cell bracket and a battery. The battery cell bracket comprises a mounting frame; the mounting frame is used for accommodating the battery cell assembly and comprises a plurality of side frames, and the plurality of side frames are arranged in the circumferential direction of the battery cell assembly in a surrounding manner; the side frame is opposite to a preset side wall of the battery cell assembly, and the preset side wall is parallel to the thickness direction of the battery cell assembly; the battery cell assembly comprises a plurality of stacked battery cells; a plurality of exhaust holes distributed along a preset track are formed in the side frame; the preset track is a periodically fluctuating waveform, and the wavelength direction of the waveform is the length direction of the corresponding side frame. According to the invention, the plurality of exhaust holes are formed in the side frame along the waveform track, so that heat dissipation channels are formed in the upper part, the middle part and the lower part of the side frame, heat can be more uniformly dissipated on the upper, middle and lower surfaces of each battery cell, the heat dissipation effect of the whole battery is improved, the working temperature of the battery is effectively reduced, and the service life of the battery is prolonged; and the safety performance is improved.

The utility model relates to the technical field of cylindrical battery structures, and provides a cap assembly and a cylindrical battery, the cap assembly comprises an outer insulating ring, a top cover plate, an anti-explosion sheet and an inner rubber ring, the inner rubber ring abuts against one side, far away from the top cover plate, of the anti-explosion sheet; a limiting ring is fixedly arranged on the anti-explosion piece and abuts against the peripheral side of the inner rubber ring, and the included angle beta between the outer side of the limiting ring and the anti-explosion piece ranges from 95 degrees to 125 degrees. According to the utility model, the limiting ring is arranged on the explosion-proof sheet, and the inner wall of the limiting ring is used for limiting the inner rubber ring, so that the inner rubber ring can be prevented from shifting in the assembling and using processes, a corresponding limiting structure does not need to be arranged on the inner rubber ring, and the processing difficulty of the inner rubber ring and the battery can be reduced; by limiting the included angle between the limiting ring and the anti-explosion piece and the specification of the limiting ring, the limiting and fixing effect of the limiting ring on the inner rubber ring can be improved, the machining convenience of the limiting ring can be improved, and the weight and material cost of the limiting ring are reduced.

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

The present disclosure relates to a battery module and a battery pack comprising the same, and more particularly, to a battery module that may be applied to types of vehicles that need batteries capable of bottom venting and top cooling and a battery pack comprising the same. The battery module according to the present disclosure includes a battery cell assembly formed by stacking a plurality of battery cells, a heat dissipation layer disposed on a top side of the battery cell assembly and a busbar frame covering a first side where a lead of the battery cell assembly protrudes and a bottom side of the battery cell assembly.