452results about "Large-sized cells cases/jackets" patented technology

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 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 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 utility model provides a shell assembly, a battery and a battery pack. The shell assembly comprises a shell and a cover plate assembly, the shell is used for containing the battery cell assembly, the cover plate assembly is connected with one end of the shell, the cover plate assembly comprises a first protruding part protruding in the direction away from the shell and a sunken part sunken in the direction close to the shell, and the sunken part is used for abutting against the battery cell assembly. The first convex part, the concave part and the shell are used for enclosing with the battery cell assembly to form a first air chamber. The first gas chamber is formed in the shell assembly, so that the first gas chamber can store the gas generated by the battery cell assembly in the shell when the shell assembly is put into use, the gas storage capacity of the shell assembly is improved, the safety of the shell assembly is improved, and the service life of the shell assembly is prolonged.

The invention relates to a membrane assembly, comprising a bursting membrane and comprising at least one reinforcing frame, wherein the reinforcing frame is connected to the bursting membrane, wherein the reinforcing frame connected to the bursting membrane is designed to be inserted into a cell housing on the inside and to be connected to the cell housing on the outside by a thermal joining method. The invention further relates to a method for connecting a bursting membrane to a battery cell housing, and to a battery cell having a membrane assembly.

A method for manufacturing a pouch-type secondary battery according to an embodiment of the present invention may include: a first sealing operation of fusing a lead film, which is attached to an electrode lead of an electrode assembly, to a sealing portion of a pouch in which the electrode assembly is accommodated; and a second sealing operation of sealing the sealing portion of the pouch. The first sealing operation may include: a heating process of irradiating with a laser beam a region which is present in the sealing portion of the pouch and corresponds to the lead film, thereby heating the lead film and melting a resin layer of the region; and a bonding process of compressing the region, thereby bonding the lead film and the melted resin layer.

A secondary battery according to an embodiment of the present disclosure includes a jelly roll electrode assembly in which a cathode sheet, an anode sheet, and a separator interposed between the cathode sheet and the anode sheet are wound together; and a battery case to which the jelly roll electrode assembly is mounted, wherein the battery case is configured such that a flow path recessed toward the center of the jelly roll electrode assembly is formed in the lower part of the battery case, wherein the flow path comprises a first flow path and a second flow path located in the center of the first flow path, and wherein an upper part of the second flow path is opened toward the upper part of the first flow path.

A secondary battery cell according to an embodiment of the present disclosure may include: a case forming an inner space and including an opening on at least one side thereof; an electrode assembly arranged in the inner space and having a negative electrode and a positive electrode alternately stacked with a separator therebetween; a cap plate arranged to cover the opening; and a vent portion that is opened when the inner space reaches a preset pressure range, and includes a base and a notch portion formed in the base, wherein the notch portion satisfies relational expression 1 with the base. 1.2<100*b*c / a<2.9 (a: Thickness of base, b: Width of notch portion, and c: Thickness of notch portion)

A manufacturing apparatus includes a chamber, a pressure reducing device, and a return pipe. The pressure reducing device is configured to reduce the pressure in the chamber. The return pipe includes a first opening, a conduit, and a second opening. The first opening and the second opening are respectively and independently open to the interior of the chamber. The first opening is connected to an exterior body. The conduit connects the first opening and the second opening. The conduit is configured to once draw gas in the exterior body out of the chamber when the pressure in the chamber is reduced, and return the drawn gas into the chamber.

A battery cell (12), a battery device (100) and an electric device, which relate to the technical field of battery devices (100). The battery cell (12) comprises a casing (1212), an end cap (1211), an electrolyte, an electrode assembly and a blocking member (125), wherein the casing (1212) is provided with an opening. The end cap (1211) covers the opening, and the end cap (1211) and the casing (1212) are hermetically connected to form a connecting portion (126). The electrolyte is disposed in the casing (1212). The electrode assembly is disposed in the casing (1212). The blocking member (125) is connected to the end cap (1211) and the casing (1212), and the blocking member (125) is located on the side of the connecting portion (126) away from the interior of the battery cell (12) and covers the connecting portion (126). Even if the connecting portion (126) fails, since the blocking member (125) covers the connecting portion (126) on the side of the connecting portion (126) away from the interior of the battery cell (12), the blocking member (125) can play the role of blocking the electrolyte, thereby reducing the risk of leakage of the electrolyte to the outside of the battery cell (12), and thus improving the reliability of the battery cell (12).

The utility model discloses a battery shell fixing device and a detection system. The battery shell fixing device comprises a mounting plate, a shell positioning block and a fixing assembly, the shell positioning block is arranged on the mounting plate, and the shell positioning block is used for assembling a battery shell; the fixing assembly and the shell positioning block are arranged on the mounting plate in a spaced mode, and the fixing assembly is used for abutting against the battery shell from the side, away from the shell positioning block, of the battery shell so that the fixing assembly can be matched with the shell positioning block to fix the battery shell. Therefore, the fixing assembly is used for abutting against the battery shell from the side, away from the shell positioning block, of the battery shell, so that the fixing assembly is matched with the shell positioning block to fix the battery shell, the risk that the battery shell shakes during measurement due to the fact that the battery shell is manually fixed can be improved, and the fixing effect on the battery shell is improved; therefore, the accuracy and the reliability of battery shell detection are improved.

This exterior material for a power storage device is constituted of at least an outside layer, a barrier layer, and an inside layer, in that order from the outer side. The inside layer includes a compound represented by general formula (A). (In general formula (A), R11 and R12 each independently represent an alkyl group having 1 to 18 carbons, or a phenyl group that optionally has a substituent).

Battery equipped with a tracking and / or electrical parameter monitoring device. Battery (1) comprising a body (10) and a cover (40) carried by the body, the body housing one or more battery cells electrically connected to output terminals (20). The battery contains an electronic tracking device (50) disposed under the cover (40) and electrically powered by the battery, this tracking device being configured to transmit its geographic coordinates wirelessly to a remote receiver (200), at least when certain predefined conditions are met. Figure for the abbreviation: Fig. 1

A non-aqueous electrolyte secondary battery (10) is characterized by comprising an electrode body (14) in which a positive electrode (11) and a negative electrode (12) face each other with a separator (13) therebetween, and a battery case (15) that accommodates the electrode body (14), wherein: the positive electrode (11) has a positive electrode mixture layer containing a positive electrode active material; and when the non-aqueous electrolyte secondary battery (10) is used in a fixed state, and the electrode body (14) in the fixed state is bisected in the vertical direction, a dibutyl phthalate oil absorption amount of the positive electrode active material contained in the positive electrode mixture layer disposed in the top half region is higher than a dibutyl phthalate oil absorption amount of the positive electrode active material contained in the positive electrode mixture layer disposed in the bottom half region.

The invention discloses a battery monomer, and relates to the technical field of batteries. The battery monomer comprises a shell which is provided with an opening; the side cover plate is arranged in the opening in a covering manner; the battery cell assembly is arranged in the shell, the battery cell assembly is provided with a side surface in the height direction of the shell, and a first gap is formed between the side surface and the shell; the tab is connected to the battery cell assembly along the length direction and extends towards the side cover plate; and the supporting piece is arranged in the first gap, and the supporting piece is positioned on one side far away from the tab or the thickness of the supporting piece in the height direction of the battery monomer is increased from the direction far away from the tab. The battery cell assembly can be prevented from generating concentrated stress points due to the gravity of the battery cell assembly, the risk that the edge of the battery cell assembly on the non-tab side is broken or broken and the tab is torn is reduced, and the integrity of the battery cell assembly is ensured, so that lithium ions can be smoothly embedded into the lithium ion battery in the charging process, the performance of the battery is improved, and the cycle life of the battery is prolonged.

A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly, the case having a bottom surface and long and short sidewalls that extend upwardly from the bottom surface; a cap plate coupled to an upper portion of the case and sealing the case; and an insulation member attached to an outer surface of the case. The insulation member includes a first layer in contact with the outer surface of the case and made of a heat-resistant material, a third layer exposed to the outside and made of a stretchable material, and a second layer between the first and third layers and made of an insulating material.

The utility model provides a battery which comprises a battery cell structure and a connecting structure arranged at one end of the battery cell structure, the connecting structure comprises a PCM (Pulse Code Modulation), a hot melt adhesive and a rubber shell, and the PCM is fixedly connected with the rubber shell in a hot melt adhesive low-pressure injection molding packaging mode. According to the battery disclosed by the utility model, the battery protection module mounted at the head of the battery cell structure and the rubber shell are subjected to low-pressure injection molding packaging by using the hot melt adhesive, so that excellent bonding strength and sealing performance between the battery protection plate and the battery shell are realized, the structural stability of battery assembly can be improved, and the appearance quality of the battery is optimized; and meanwhile, the production efficiency and the environmental protection performance of the product are improved.

Cooling device (2) for a battery (4) of a motor vehicle with a cooling channel (12) arranged between a surface (16) of the battery (4) to be cooled and a counter bearing (10, 22a), - wherein the surface to be cooled (16) and the counter bearing (10, 22a) are spaced apart from each other in a z-direction and the cooling channel (12) has a bottom surface (22a) oriented towards the counter bearing (10, 22a) and a top surface (20a) oriented towards the battery (4), - wherein the cooling channel (12) is formed in two parts with a first profile part (20) and a second profile part (22), - wherein the first profile part (20) having the cover surface (20a) is made of a metal, - wherein the second profile part (22) having the base surface (22a) is made of a plastic, and - wherein the cooling channel (12) can be expanded by at least a partial expansion of the second profile part (22) in the z-direction, so that the cooling channel (12) in the expanded state is in contact with the counter bearing (10, 22a) with its bottom surface (22a) and with the top surface (20a) with the surface (16) to be cooled.

The invention relates to a test device (10) for performing a penetration test on an electrical energy storage device (12) of an at least partially electrically powered motor vehicle, comprising at least one penetration device (14) for penetrating a housing (16) of the electrical energy storage device (12), wherein the penetration device (14) is arranged on a remotely controllable mobile platform (18) of the test device (10).

The embodiment of the utility model provides a self-repairing module battery, a battery pack and electric equipment, and the self-repairing module battery comprises a battery shell which is provided with a containing cavity; the self-repairing assembly is connected with the battery shell, the self-repairing assembly is configured in the accommodating cavity, and the self-repairing assembly is configured to be used for accommodating replenishing liquid; and the battery assembly is configured in the accommodating cavity, and when the battery assembly reacts to enable the air pressure in the battery shell to reach a preset value, the self-repairing assembly is conducted, and the replenishing liquid in the self-repairing assembly is replenished into the accommodating cavity. The method can avoid the obvious difference of battery performance caused by the difference of the replenishment liquid amount in the initial period and the later period of circulation due to the overlarge initial replenishment liquid amount, can also avoid the risk of diving in the later period of the battery circulation due to the insufficient electrolyte amount, and improves the performance stability of the battery in the using process.

A battery pack assembly guide jig for guiding an assembly of a battery pack according to an embodiment of the present disclosure is configured to support a case tray and a case cover of the battery pack when the case tray and the case cover are coupled to each other.

Disclosed are a pouch film shaping apparatus including a preheating lamp configured to preheat a metal barrier layer of a pouch film in order to increase stretching force of the pouch film and a pouch film shaping method.

The invention relates to a pressure equalization device (20) for equalizing an internal pressure in a receiving housing of an electrochemical or electrotechnical device, in particular a battery housing, having a housing (20.3) that has at least one gas passage opening (20.4), which forms a gas-permeable connection between an interior (20.1) and an exterior (20.2) of the housing (20.3), wherein the gas passage opening (20.4) is blocked by means of a gas-permeable or gas-tight diaphragm (40), wherein the diaphragm (40) is assigned a burst element (30), which is designed and positioned such that, when the diaphragm (40) is deformed in the direction of the exterior (20.2), the diaphragm is destroyed at least at one point under the action of the burst element (30) to establish a flow connection from the interior (20.1) to the exterior (20.2) through the gas passage opening (20.4). In order to be able to achieve a reproducible bursting behavior in such a pressure equalization device by simple means, according to the invention provision is made for the diaphragm (40), its inner face (42) facing the interior (20.1) of the housing (20.3), to be connected, in particular by a material bond, to the burst element (30).

A battery pack includes: a case, cell modules, a first electrical connection member, and a second electrical connection member. The case has a receiving cavity, a first opening and a second opening communicated to the receiving cavity. The cell modules are stacked in the receiving cavity; each cell module has a first electrical connection end and a second electrical connection end disposed opposite to each other. One first electrical connection member is connected to first electrical connection ends of two adjacent cell modules; a portion of the first electrical connection member connected to the first electrical connection ends is exposed through the first opening. One second electrical connection member is connected to second electrical connection ends of two adjacent cell modules; a portion of the second electrical connection member connected to the second electrical connection ends is exposed through the second opening.

The present application relates to the technical field of battery, in particular to a battery cell, a battery pack and a power utilization device. The battery cell comprises a shell, a cover plate and an explosion-proof valve. The shell is provided with an open end. The cover plate is arranged at the open end of the shell. The explosion-proof valve is arranged on the cover plate. In the thickness direction of the explosion-proof valve, one side of the explosion-proof valve is provided with a notch. One side of the notch is surrounded to form an opening surface. The notch comprises an opening section and a connecting section. The thickness of the opening section is h. The length of the opening section is L2. The material shear strength of the opening section is τ. When the battery cell is in thermal runaway, the gas production of the battery cell is Q. h, L2, τ and Q satisfy: 0.2N / mm 3 ≤(L2xhxt) / 10Q≤0.4N / mm 3 The battery cell of the present application can timely crack the opening section to timely open the explosion-proof valve when in thermal runaway. The exhaust capacity of the explosion-proof valve and the gas production of the battery cell are matched, so that the battery cell is not gassed and the shell is not cracked and sprayed.

The invention relates to a battery cell and a battery pack, and relates to the technical field of batteries, the battery cell comprises a pole group, a cover plate, a pole column and an electric connecting piece, the pole group is provided with a plurality of tabs distributed along a first direction; the cover plate is arranged at one end of the pole group along the second direction; the pole is arranged on the cover plate; the pole columns and the pole groups are distributed at intervals along a second direction to form a mounting area; the electric connecting piece comprises a first connecting part and a second connecting part which are connected with each other, the first connecting part is connected with one end, close to the pole group, of the pole column, the second connecting part and the pole group are distributed at intervals in the second direction, and the second connecting part divides the mounting area into a first area and a second area which are distributed in the first direction; and the tab positioned in the first area and the tab positioned in the second area are respectively connected with two opposite sides of the second connecting part along the first direction. According to the battery cell and the battery pack, the problem that the lengths of a plurality of tabs are too long can be solved.

A secondary battery cell according to an embodiment of the present disclosure may include: a case forming an inner space and including an opening on at least one side thereof; an electrode assembly arranged in the inner space and having a negative electrode and a positive electrode alternately stacked with a separator therebetween; a cap plate arranged to cover the opening; and a vent portion that is opened when the inner space reaches a preset pressure range, and includes a base and a notch portion formed in the base, wherein the notch portion satisfies relational expression 1 with the base. 1.2<100*b*c / a<2.9 (a: Thickness of base, b: Width of notch portion, and c: Thickness of notch portion)