1059results about "Large-sized cells cases/jackets" patented technology

The invention relates to the field of battery shell machining, in particular to a new energy automobile battery shell machining device which comprises a machining table, and a first fixing mechanism and a second fixing mechanism which are distributed left and right are installed at the top of the machining table. The machining table is further provided with a moving mechanism for driving the first fixing mechanism and the second fixing mechanism to move oppositely and a multi-dimensional welding machine for welding the U-shaped tailor-welded part and the L-shaped tailor-welded part. Two horizontal sections of the U-shaped tailor-welded part are limited, outwards supported and straightened at the same time through linkage matching of the first outer clamping assembly and the first inner straightening assembly, the two parallel sections of the U-shaped tailor-welded part are kept perpendicular to the middle section, and the first outer clamping assembly abutting against the U-shaped tailor-welded part and the first positioning assembly are connected and locked through the first positioning assembly. The horizontal section of the L-shaped tailor-welded part is limited and straightened through mutual cooperation of the second outer clamping assembly, the second inner straightening assembly and the front-back alignment assembly.

The invention provides a battery. The battery comprises a shell, a cover body, a battery cell, a pole assembly and an insulating glue layer, the cover body is buckled on the shell; the battery cell is located in a cavity defined by the shell and the cover body, and a first tab of the battery cell is conductively connected with the shell; a pole assembly arranged on the shell in a penetrating manner is connected with a second tab of the battery cell; the pole assembly comprises a connecting sheet and a pole; the insulating rubber layer is arranged between the connecting sheet and the side wall of the shell; a first hole is formed in the side wall of the shell, a second hole is formed in the insulating glue layer, the pole penetrates through the overlapping area of the first hole and the second hole, at least part of the connecting piece is exposed in the overlapping area of the first hole and the second hole, and the connecting piece exposed in the overlapping area is connected with the second tab through a first welding mark. The projection of the first welding mark does not coincide with the projection of the pole. Through the mode, compared with a riveting mode, the welding connection mode is low in cost, and the problem of poor air tightness or short circuit of the battery caused by riveting can be avoided.

The invention relates to the technical field of welding, in particular to a battery shell laser welding process method and device.The battery shell laser welding process method comprises the steps that a battery shell joint face is subjected to laser fine tuning treatment, and image data are obtained; obtaining a lattice structure data set of the micro lattices, adjusting the arrangement direction and the grain boundary position of the micro lattices to optimize the lattice structure data set, and obtaining an optimized grain distribution data set; microtopography data in the surface state of the joint face are recognized to obtain surface roughness data, thermal stress simulation analysis is conducted, region division processing is conducted on the thermal stress distribution situation to obtain a thermal stress gradient data set, and the thermal conductivity difference of the joint face is analyzed based on the thermal stress gradient data set to obtain a thermal transfer data set; and the heat transfer data set and the grain distribution data set are combined, optimal laser welding parameters are obtained, and a welding robot is controlled to conduct welding. Welding defects caused by uneven thermal stress in the battery shell welding process are reduced, and the consistency of welding quality is improved.

The utility model discloses a shell, cell and battery pack, the shell comprises: a shell assembly, the shell assembly comprises a shell body and cover plates, the two ends of the shell body in the length direction are both provided with the cover plates and connected, and the shell body is provided with an explosion-proof valve; and the insulating assembly comprises a first insulating film and a second insulating film, the first insulating film wraps the peripheral wall of the shell body, a first avoiding hole is formed in the first insulating film, the second insulating film is located in the first avoiding hole, and a second avoiding hole for avoiding the explosion-proof valve is formed in the second insulating film. According to the shell disclosed by the utility model, gas-electricity separation of the battery cell can be realized, a good insulation effect is ensured, and the explosion-proof valve is reliably opened.

The utility model relates to the technical field of batteries, and provides a battery and a battery device, and the battery comprises a battery shell which comprises a cover plate and a shell part; the pole assembly is arranged on the cover plate, and at least part of the pole assembly is located on the outer side of the cover plate; the insulation sleeve covers the outer surface of the pole assembly, and at least part of the insulation sleeve is located on the outer side of the cover plate; the insulating coating covers at least part of the cover plate, and the insulating coating is located on the outer side of the cover plate; wherein the insulation sleeve covers at least part of the insulation coating, the coincident area of the orthographic projection of the insulation sleeve on the cover plate and the insulation coating is S1, the area enclosed by the circumferential outer edge of the cover plate is S2, and S1 / S2 is 0.2%-10%, so that reliable insulation protection of the insulation sleeve on the pole assembly can be ensured, and the coincident area of the insulation sleeve and the insulation coating can be ensured not to be too large; therefore, the overall heat dissipation performance of the battery shell is ensured, and the safe use performance of the battery device can be effectively improved.

The embodiment of the utility model provides an insulating part for coating a battery cell, an electrode assembly, a battery monomer, a battery and a power utilization device, and the insulating part comprises a middle folding sheet which is provided with a positioning hole; the first folding sheet is connected with the middle folding sheet at a first folding line, and the first folding sheet comprises a first main folding sheet and a side folding sheet connected with the first main folding sheet at a third folding line; the extension sheet is connected to one end, close to the middle folding sheet, of the side folding sheet at the fourth folding line; the second folding sheet is connected with the middle folding sheet at a second folding line; wherein the middle folding sheet is configured to cover the bottom of the battery cell, the first folding sheet and the second folding sheet are configured to cover the circumferential side part of the battery cell after being folded, and the extension sheet is configured to completely cover the positioning hole. The insulating part can prevent the battery cell from being in contact with the shell and can receive active substances falling from the pole piece of the battery cell, so that electrochemical corrosion of the shell is avoided.

The present invention relates to a high-stability magnetic storage battery, comprising a battery inner cavity shell (9), a positive electrode current collector (8), a negative electrode current collector (12), a battery separator (6), and an outer shell cover plate (5). The battery inner cavity shell (9) is filled with an electrolyte (10), the positive electrode current collector (8) and the negative electrode current collector (12) are arranged on the inner wall of the battery inner cavity shell (9) relative to each other, the outer wall of the battery inner cavity shell (9) is provided with one or more magnets, and the electrolyte (10) contains a negative electrode active material (11A) and a positive electrode active material (11B). Compared with the prior art, the battery of the present invention has the advantages of improving the structural stability of the electrode material, improving the performance of the electrode and the electrolyte, and extending the service life of the storage battery.

The invention provides a single battery, a battery device and a power utilization device, the single battery comprises an electrode assembly, the total width of a positive pole lug part accounts for 50%-100% of the total size of a pole lug connecting edge along the extension direction of the pole lug connecting edge of a positive pole main body part, and the total width of a negative pole lug part accounts for 50%-100% of the total size of the pole lug connecting edge along the extension direction of the pole lug connecting edge of a negative pole main body part; wherein the coating weight of the single negative electrode active material layer is 0.1 g / 1540.25 mm < 2 >-0.145 g / 1540.25 mm < 2 >, the electrolyte comprises at least one of dimethyl carbonate and linear carboxylic ester, the structural formula of the linear carboxylic ester meets R1-COO-R2, and R1 and R2 are independently selected from C1-C5 alkyl or halogenated alkyl respectively; based on the total mass of the organic solvent, the mass fraction of the first solvent is 4-72%.

Disclosed in the present application are a battery case and a battery module. The battery case comprises a top cover assembly, a bottom plate and side plates connected to the bottom plate, wherein an installation cavity is enclosed by the bottom plate and the side plates and is sealed by the top cover assembly; and at least one of the bottom plate and the side plates comprises a vapor chamber structure. The battery case and the battery module provided in the present application have good heat dissipation performance.

The utility model provides a battery monomer, a battery device and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode assembly, an electrode terminal, a fixing piece and a first insulating piece, the electrode assembly is housed within the housing. The electrode terminal is disposed on a wall portion of the housing and is electrically connected to the electrode assembly. The fixing piece is arranged on the peripheral side of the electrode terminal, the fixing piece comprises a base part and a limiting part, the base part is connected to the wall part, the limiting part is connected to the base part and extends in the direction close to the electrode terminal, and the limiting part is configured to limit the electrode terminal to move in the direction away from the electrode assembly in the thickness direction of the wall part. And at least part of the first insulating part is arranged between the electrode terminal and the limiting part. The thickness of the limiting part is smaller than that of the base part. Therefore, the space for accommodating the first insulating part between the limiting part and the electrode terminal can be enlarged while the connection strength requirement of the base part and the wall part of the fixing part is met, so that the creepage distance between the limiting part and the electrode terminal can be increased.

A battery housing and a power battery. The battery housing comprises cover plates and a casing (4). The casing (4) is of a hollow structure having openings, the cover plates are provided with connecting bosses (3), and the connecting bosses (3) are inserted into the openings of the casing (4), so that the cover plates close the casing (4) to form an accommodating cavity (8). A weld seam (9) is formed at the junction of the casing (4) and each cover plate, the weld seam (9) has a weld width n, the thickness of the area of the cover plate in which the connecting boss (3) is provided is a, and a weld width ratio is X=n / a, with a range of 0.16≤X≤1.

The invention discloses a battery cell and a power utilization device, the battery cell comprises a shell and an electrode assembly, the shell forms a containing cavity filled with electrolyte, the electrode assembly is arranged in the containing cavity, the surface of an active substance layer of the electrode assembly is recessed inwards to form a groove, and the groove extends to the edge of a pole piece; the thickness of the active material layer is M, and the thickness of the isolating membrane in the thickness direction is C; the isolating membrane is laminated with the first pole piece along the thickness direction, and the porosity of the isolating membrane is F; the interval between every two adjacent grooves in the second direction is H, the sectional area of each groove in the section perpendicular to the extending direction is G, and 0.03 M * H < = (G + (0.1 C * F * H)). Through reasonable arrangement of the isolating membrane and the groove, the isolating membrane and the groove can transmit sufficient electrolyte to the active substance layer to infiltrate the interior of the electrode assembly and meet the requirement of the electrode assembly for electrolyte consumption, so that the electrolyte in the electrode assembly can be supplemented in time in the circulation process, and the cycle life of the battery cell can be prolonged.

The utility model provides a cylindrical battery monomer, a battery and a power utilization device. The cylindrical battery monomer comprises a shell, an electrode assembly and a binding piece, the electrode assembly is contained in the shell and comprises an electrode body and a tab, and the tab is led out from the end of the electrode body. The binding piece is arranged between the shell and the electrode assembly, the binding piece is arranged around the peripheral side of the electrode body in the circumferential direction of the electrode body, the binding piece is provided with a first end and a second end which are arranged in the circumferential direction, and the first end and the second end are arranged at an interval. The cylindrical battery monomer provided by the embodiment of the utility model is beneficial to improving the reliability of the cylindrical battery monomer.

The utility model belongs to the technical field of batteries, and discloses a battery shell and a battery, the battery shell comprises a shell body, a cover plate module, a composite cover plate, a composite pole and a protective end plate, the cover plate module comprises a first cover plate body and a connecting pole penetrating through the first cover plate body, the composite cover plate is provided with a penetrating structure for the pole lug to extend out, the composite pole column is arranged on one side, deviating from the cover plate module, of the composite cover plate, the pole lug extending out of the accommodating cavity realizes current conduction through the composite pole column, and the protective end plate is provided with an avoiding through hole for the pole lug to penetrate through. The tab on one side and the composite pole located on the outer side of the containing cavity achieve current conduction through the penetrating structure, the space occupied by the composite pole and the space for connecting the bent tab and the composite pole are saved, the space utilization rate is increased, space is provided for increasing the size of the pole set, the energy density is increased, and the service life of the pole set is prolonged. And the pole lug is prevented from skewing during passing through the protection end plate, so that the reliability of the structure is improved.

The invention relates to a high-voltage battery (1) as a traction battery for a motor vehicle, comprising a plurality of individual battery cells (2) whose battery terminals (8, 10) are arranged on a first side of a cell housing (4) and connected to current collectors (13, 14), wherein each of the individual battery cells (2) has a pressure relief element (12) which opens the cell housing (4) when a predetermined pressure is reached. The high-voltage battery according to the invention is characterized in that the The overpressure relief element (12) is arranged together with the battery terminals (8, 10) of the battery cell (2) on a first side of the cell housing (4), wherein the battery terminals (8, 10) connected to the current collectors (13, 14) and the overpressure relief element (12) are covered with an electrically insulating, chemically, mechanically and temperature-resistant potting compound (20), which is designed such that it bursts open in the area of ​​the affected battery cell (2) in the event of an activation of the overpressure relief element (12).

A battery cell, a battery and an electric device. The battery cell (100) comprises a casing (110), an electrode assembly (120), an isolating structure (170), and an insulating piece (160), wherein the casing (110) is provided with an inner cavity and a first wall (111); the electrode assembly (120) is arranged in the inner cavity, the isolating structure (170) is at least partially located between the first wall (111) and the electrode assembly (120), and the isolating structure (170) is provided with a first through hole (150); and the insulating piece (160) comprises a first portion (161), and the first portion (161) covers the first through hole (150). In the battery cell (100), the first portion (161) of the insulating piece (160) covers the first through hole (150), such that the probability of powder on one side of the electrode assembly (120) moving to one side of the first wall (111) through the first through hole (150) is reduced to a certain extent, thereby improving the reliability of the battery cell (100).

Flexible electronic devices may be provided. A flexible electronic device may include a flexible display, a flexible housing and one or more flexible internal components configured to allow the flexible electronic device to be deformed. Flexible displays may include flexible display layers, flexible touch-sensitive layers, and flexible display cover layers. The flexible housing may be a multi-stable flexible housing having one or more stable positions. The flexible housing may include a configurable support structure that, when engaged, provides a rigid support structure for the flexible housing. The flexible internal components may include flexible batteries, flexible printed circuits or other flexible components. A flexible battery may include flexible and rigid portions or may include a lubricious separator layer that provides flexibility for the flexible battery. A flexible printed circuit may include flexible and rigid portions or openings that allow some rigid portions to flex with respect to other rigid portions.

The utility model discloses a battery which comprises a battery cell main body, a bottom adhesive layer and a head adhesive layer, the battery cell main body comprises a top surface and a bottom surface, and a first side surface, a second side surface, a third side surface and a fourth side surface which are positioned between the top surface and the bottom surface and are sequentially connected end to end along the circumferential direction, the step face comprises a first side face area, a vertical face area and a second side face area which are sequentially connected, and the second side face area protrudes outwards relative to the first side face area. The bottom adhesive layer is positioned at the bottom of the battery cell main body, and a first notch is formed in a position close to or corresponding to the vertical surface area; the head adhesive layer is positioned at the top of the battery cell main body, and a second notch is formed in a position close to or corresponding to the vertical surface area. The battery can be matched with a battery compartment structure with a local bulge through the stepped surface, so that the space utilization rate of a complete machine end is improved, and the battery capacity is improved.

The utility model provides a battery monomer, a battery and electric equipment. The battery monomer comprises a shell and a protection piece, the shell comprises a first wall part, the first wall part is provided with a first surface, the first surface is provided with a pressure relief groove, and the first wall part is configured to be capable of cracking along the pressure relief groove when the battery monomer is subjected to pressure relief. The protection piece is arranged on the first surface and shields the pressure relief groove, and the protection piece and a groove opening of the pressure relief groove are arranged in a clearance mode in the thickness direction of the first wall part. The first wall part of the battery monomer is provided with the protection piece, and the protection piece can resist external force interference, protect the pressure relief groove, limit the deformation of the first wall part, and reduce the risk that the first wall part cracks in advance along the pressure relief groove due to the change of the pressure in the battery monomer on the pressure relief groove. According to the battery, the protection piece and the notch gap of the pressure relief groove are arranged, so that the protection piece is not easy to prevent the first wall part from cracking along the pressure relief groove when the battery monomer is subjected to pressure relief, the pressure relief groove can be quickly cracked for pressure relief when the battery monomer is subjected to pressure relief, and the reliability of the battery monomer is favorably improved.

An etching machine is disclosed. The etching machine according to an embodiment of the present disclosure includes a laser source; a scanner configured to deflect light from the laser source to an electrode current collector coated with an electrode active material; and a processor configured to control at least one of the laser source or the scanner to keep a pulse distance of the light incident on the electrode current collector constant.

The utility model relates to the technical field of batteries, in particular to a battery. The battery core coating film comprises a film body which is provided with two film bodies opposite to the two side surfaces of a battery core in the thickness direction respectively; the supporting assembly is arranged on the surface, facing the battery cell, of the membrane body, the supporting assembly comprises a supporting piece and an elastic telescopic piece, the supporting piece comprises a central area and an edge area surrounding the central area, the central area is connected with the membrane body, and a gap is formed between the edge area and the membrane body; the elastic telescopic piece is arranged in a gap between the edge area and the membrane body, and the two ends of the elastic telescopic piece are connected with the membrane body and the supporting piece respectively. According to the battery disclosed by the utility model, the positive plate and the negative plate of the battery cell are stably attached through the supporting assembly, so that the service life of the battery is prolonged, and the satisfaction degree of a user is improved.

The invention provides an improved explosion-proof valve, a battery shell and a battery pack aiming at the problems that an existing explosion-proof valve is easy to crack in charge-discharge circulation and cannot be normally opened under extreme conditions. Annular and directional nicks are arranged on the valve plate of the anti-explosion valve to form a weak area, and the mechanical property is optimized and the structural strength and the pressure relief sensitivity are balanced by accurately controlling the nick size (a = c = b / 2, and d: c = (0.25-0.45)). The nick layout comprises transverse nicks, longitudinal nicks and oblique nicks, a multi-dimensional stress release network can be formed through combination, the response speed is increased, and the anti-fatigue performance is improved. The battery shell comprises the anti-explosion valve and is installed on a pressure relief hole in the bottom wall of the shell, electric arc discharge is avoided, and the space utilization rate and the overall protection performance are improved. The battery pack is composed of a battery shell, a pole group and an end cover, the explosion-proof valve is installed at the bottom, high-temperature gas is prevented from impacting electronic elements, the risk of secondary damage is reduced, meanwhile, a pressure relief channel is kept unblocked through gravity, and the safety of a battery system is remarkably improved.

Housing (1) for a battery cell arrangement, in particular for use in an electrically powered motor vehicle, comprising: at least one first housing part (2); and at least one second housing part (3), which second housing part (3) is or can be detachably connected to the first housing part (2); in which, in a connected state, a housing interior (5) for accommodating a number of battery cells (11) is formed between the first housing part (2) and the second housing part (3); in which at least one of the two housing parts (2, 3) has the following structure: a first cover layer (2a, 3a) made of sheet metal; a second cover layer (2b, 3b) made of sheet metal; an intermediate layer (2c, 3c) arranged between the first cover layer (2a, 3a) and the second cover layer (2b, 3b) made of a shear and compression-resistant, formable material, which material is permanently connected to the cover layers (2a, 2b, 3a, 3b); in which at least one of the cover layers (3a) is formed from at least two adjacent metal sheets (3aa, 3ab), of which at least one (3ab) has a structure, so that channels (6, 6', 6") for a heat-conducting fluid for dissipating heat from the housing (1) are formed between the two metal sheets, in which a supply line (8) and a discharge line are formed on at least one of the two metal sheets (3aa) for supplying a heat conduction fluid to the channels (6, 6', 6") and for discharging a heat conduction fluid from the channels (6, 6', 6").

The invention relates to the technical field of lithium battery manufacturing, and discloses a quality control method for an automatic stamping process of a lithium battery shell. According to the method, a multi-dimensional monitoring system is constructed by collecting a stamping pressure time sequence waveform, plate thickness distribution data and a mold vibration frequency spectrum signal in real time. Analyzing the pressure waveform deviation by using a dynamic time warping algorithm, and forming a coupling characteristic matrix by combining the thickness data; wavelet packet decomposition is adopted to process the vibration signal, a frequency band energy distribution spectrum is generated, and a mold structure stability coefficient is calculated. And fusing the characteristics and the coefficients to generate a quality evaluation index, and dynamically adjusting the control parameters of the stamping equipment according to the quality evaluation index to realize closed-loop control. According to the method, the limitation of single parameter monitoring is broken through, dynamic changes in the stamping process are accurately captured through multi-source information coupling analysis, factors such as plate differences and die state changes can be responded in real time, and the comprehensiveness and timeliness of quality control are improved.

The invention discloses a battery safety assembly, a battery monomer, a control method, a battery pack and a power utilization device, the battery safety assembly comprises a mounting plate, an exhaust assembly and a controller, the mounting plate is connected with a shell of the battery monomer, a containing cavity for containing a pole core is formed in the shell, the exhaust assembly is arranged on the mounting plate and comprises an exhaust valve, and the exhaust valve is connected with the controller. An exhaust channel is arranged in the exhaust valve and has a conducting state and a cut-off state, the exhaust valve can be switched between the conducting state and the cut-off state, the exhaust channel is conducted in the conducting state to communicate with the containing cavity for exhausting, and the exhaust channel is cut off in the cut-off state; the controller is electrically connected with the exhaust valve and used for controlling the exhaust valve to be switched between the on state and the off state. According to the battery safety assembly disclosed by the embodiment of the invention, the controller is used for controlling the exhaust valve to be switched between the on state and the off state, so that the battery safety assembly can be switched between the exhaust state and the state of sealing the accommodating cavity, the long-acting operation of the battery monomers is facilitated, and the safety of the battery monomers is ensured.

The invention provides a battery cell and electric equipment, a shell of the battery cell further comprises a first wall and a second wall which are oppositely arranged along the thickness direction of the battery cell, the first wall comprises a first main body wall and a first step wall, and the first step wall is sunken towards the direction close to the second wall relative to the first main body wall. The battery cell further comprises an electrode assembly and an electrode terminal, the electrode assembly is arranged in the shell, and the electrode assembly comprises a first pole piece and a second pole piece which are opposite in polarity. The electrode terminal is arranged on the first step wall and electrically connected with the first pole piece, and the thickness H0 of the first step wall meets the condition that H0 is smaller than or equal to 0.2 mm. The reinforcing structure is formed between the first main body wall and the first step wall, so that the possibility that the first step wall deforms after being stressed is low, the sealing effectiveness between the electrode terminal and the first step wall can be kept, the risk of electrolyte leakage is reduced, and the safety of the battery cell is improved.

The utility model belongs to the technical field of batteries, and discloses a battery shell and a battery, the battery shell comprises a shell body and a cover plate assembly, the shell body is a hollow shell mechanism with an opening at one side, the cover plate assembly comprises a cover plate body, a first insulating part and a composite pole, the cover plate body is arranged at the opening of the shell body and seals the shell body, and the composite pole is arranged on the first insulating part. The cover plate body is used for forming an accommodating cavity for accommodating a pole group, the cover plate body is provided with a first penetrating structure through which a lug extends out of the accommodating cavity, the first insulating part is arranged on the cover plate body in an injection molding manner and is used for isolating the cover plate body from the lug, and the composite pole column is arranged on one side, deviating from the pole group, of the cover plate body and realizes current conduction with the lug. Through the arrangement of the first penetrating structure, the tab can realize current conduction with the composite pole located on the outer side of the accommodating cavity through the first penetrating structure, so that the space occupied by the composite pole and the space for connecting the bent tab with the composite pole are saved, the extra space occupation is reduced, the volume of the pole group can be further increased, and the energy density is improved.

A battery cell has asymmetrically formed electrode leads, and a battery module including the same. The spatial efficiency and the mechanical strength of the battery module are improved.

Flexible electronic devices may be provided. A flexible electronic device may include a flexible display, a flexible housing and one or more flexible internal components configured to allow the flexible electronic device to be deformed. Flexible displays may include flexible display layers, flexible touch-sensitive layers, and flexible display cover layers. The flexible housing may be a multi-stable flexible housing having one or more stable positions. The flexible housing may include a configurable support structure that, when engaged, provides a rigid support structure for the flexible housing. The flexible internal components may include flexible batteries, flexible printed circuits or other flexible components. A flexible battery may include flexible and rigid portions or may include a lubricious separator layer that provides flexibility for the flexible battery. A flexible printed circuit may include flexible and rigid portions or openings that allow some rigid portions to flex with respect to other rigid portions.

A thermal management method of a battery wherein the battery comprises at least one cell, and wherein a heating device is configured to heat the battery in response to a heating instruction. The method comprises the following steps: determining the charge state of the battery cell and the battery cell current of the battery cell; a first value of a first parameter of the heating device; a reference cell temperature of the cell; the maximum battery cell temperature and the minimum battery cell temperature of the battery cell are obtained. Under the condition that the maximum battery cell temperature is lower than a first threshold temperature; the minimum cell temperature of the cell is lower than a second threshold temperature; the charge state of the battery cell is higher than a charge state threshold value; the method also includes instructing a heating device to heat the electrical core.