1717results about "Jackets/cases materials" patented technology

The present disclosure is to provide a cylindrical secondary battery that facilitates connecting a busbar by having both positive and negative electrodes on one side, and that has highly reliable electrical contact between an electrode assembly and a case. To that end, the present disclosure provides a secondary battery comprising: an electrode assembly; a case for housing the electrode assembly; a current collector plate welded to the electrode assembly and case; and a cap plate, located above the current collector plate, for sealing the case.

The invention discloses slurry, a battery diaphragm, a preparation method of the battery diaphragm and a battery, and belongs to the technical field of batteries. The slurry comprises the following components: ceramic particles, carbon nanofibers, a binder I and a solvent I, the ceramic particles comprise ceramic particles I and ceramic particles II; the particle size of the ceramic particles I is 0.55-1 [mu] m, and the particle size of the ceramic particles II is 0.05-0.45 [mu] m. The battery diaphragm comprises a base membrane and a composite coating, the composite coating is attached to at least one surface of the base film; the composite coating is formed by curing the slurry provided by the invention. The battery diaphragm provided by the invention has good thermal stability and mechanical strength, the passing rate of the lithium ion battery in coping with safety tests such as extrusion, puncture and heavy object impact is greatly improved, and meanwhile, the electrochemical performance of the lithium ion battery is also improved.

A secondary battery includes: an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a can accommodating the electrode assembly, a lower end of the can being open and being electrical connected to the second electrode plate; a first current collector plate between a top surface of the electrode assembly and the can and electrically connected to the first electrode plate; and a terminal part passing through a top surface of the can, a lower end of the terminal part being electrically and mechanically coupled to a top surface of the first current collector plate. A terminal liquid injection hole, through which an electrolyte is injected, extends through the terminal part.

A cylindrical secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a case accommodating the electrode assembly and having a lower end that is open and electrically coupled to the second electrode plate; a first current collector plate between a top surface of the electrode assembly and the case and that is electrically connected to the first electrode plate; a terminal passing through a top surface of the case and including a lower end electrically and mechanically coupled to a top surface of the first current collector plate; and a cap plate configured to seal the lower end of the case. The terminal includes a lower terminal including a welding groove having a depth from a top surface of the terminal in a downward direction; and an upper terminal in the welding groove of the lower terminal.

A battery cell includes an electrode assembly, a case, an end cover assembly, and a current collecting component. The electrode assembly includes a first tab. The case is used for accommodating the electrode assembly, and the case has an opening. The end cover assembly covers the opening and is provided with an electrode lead-out portion. The current collecting component includes a tab connecting region and an end cover connecting region. The tab connecting region is used for connecting to the first tab. The end cover connecting region is welded to the inner side of the electrode lead-out portion and forms a first welded portion. The penetration depth of the first welded portion formed on the electrode lead-out portion is smaller than or equal to the thickness of the electrode lead-out portion.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case to cover the opening, and a terminal plate thermally fused to the cap plate by a thermal-fusion member, the thermal-fusion member electrically insulating the cap plate and the terminal plate from each other; and a sealing part attached to and located on a side of the thermal-fusion member, a side surface of the terminal plate, and an outer surface of the cap plate.

The invention discloses a rechargeable lithium battery without a charging port and a manufacturing method thereof, and relates to the technical field of lithium batteries, and the lithium battery comprises a first negative electrode metal shell, a voltage regulating circuit board, a low-voltage positive electrode cap, a high-voltage positive electrode connecting piece, a lithium cell, a low-voltage positive electrode and negative electrode insulating spacer and an insulating shell. The upper end of the first negative electrode metal shell is inwards provided with a first flange, the upper surface of the voltage regulating circuit board is provided with a negative electrode copper ring and a positive electrode copper ring, the voltage regulating circuit board is welded on the inner side of the first flange on the first negative electrode metal shell through the negative electrode copper ring, and the high-voltage positive electrode connecting piece is arranged on the inner surface of the voltage regulating circuit board. The lithium battery can stably output low voltage, the voltage regulating circuit board is welded to the inner side of the first flange, the electrical connection performance is very reliable, and sealing is achieved through welding flux; an insulating support does not need to be arranged below the voltage regulating circuit board for supporting, the insulating support is omitted, the height space occupied by the voltage regulating circuit board is compressed, and the capacity of the lithium battery core is improved by lengthening the length of the lithium battery core.

The invention relates to a battery monomer, a battery device and a power utilization device, the battery monomer comprises a shell assembly and an electrode assembly, and the shell assembly comprises a shell and a first electrode terminal arranged on the shell; the electrode assembly is accommodated in the shell and comprises a first pole piece and a second pole piece, each of the first pole piece and the second pole piece comprises a coating part and a tab, the coating part comprises an active material layer, the tab is not provided with the active material layer, one of the first pole piece and the second pole piece is a positive pole piece, and the other one is a negative pole piece; the active material layer in the positive pole piece comprises a positive active material, and the positive active material comprises lithium-containing phosphate with an olivine structure; the tab in the first pole piece is used for electrically connecting the first electrode terminal and the coating part in the first pole piece, and the area of the projection plane of the first electrode terminal along the thickness direction of the first electrode terminal is 300mm < 2 >-500mm < 2 >. According to the invention, the cycle performance and the use reliability of the battery monomer under a fast charge condition can be effectively improved.

The embodiment of the invention provides a shell, a battery monomer, a battery and an electric device. The shell is provided with an opening and comprises a first wall opposite to the opening and at least one second wall, and the first wall and the second wall are arranged in a crossed mode; the first wall and the second wall are connected through a first fillet, and the inner diameter r1 of the first fillet and the minimum thickness T2 of the second wall with the minimum thickness in the at least one second wall meet the condition that r1 / T2 is larger than or equal to 2.0 and smaller than or equal to 30; the yield strength of the shell at the temperature of 25 DEG C is Re, and Re is larger than or equal to 140 MPa and smaller than or equal to 1000 MPa. According to the shell, the battery monomer, the battery and the power utilization device provided by the embodiment of the invention, the processing difficulty of the shell and the space capacity and strength of the battery monomer can be balanced.

Apparatus, systems, and methods described herein relate to the manufacture and use of single pouch battery cells. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a pouch, the first current collector having a first electrode material disposed thereon, a second current collector coupled to a second portion of the pouch, the second current collector having a second electrode material disposed thereon, and a separator disposed between the first electrode material and the second electrode material. The first portion of the pouch is coupled to the second portion of the pouch to enclose the electrochemical cell.

The invention discloses an energy storage device, and particularly discloses a battery pack for supplying power to electronic equipment, the battery pack comprises a shell assembly, a battery cell module, at least one temperature detection device and a detection support, the shell assembly is installed on the electronic equipment and is supported by the electronic equipment; the battery cell module comprises a plurality of battery cells and a battery cell bracket for supporting the plurality of battery cells, and the battery cell module is arranged in the shell assembly; the plurality of temperature detection devices are arranged to detect the temperature of the battery cell; the detection support is arranged to support the temperature detection device so that the position of the temperature detection device in the shell assembly can be fixed. According to the battery pack for supplying power to the electronic equipment, the temperature detection device is fixed through the detection support, it can be ensured that the temperature detection device can detect the temperature of the battery cell, and the temperature detection device can be prevented from falling off.

The system for deicing black ice includes a plurality of laser scanners that are arranged at intervals along a road, each laser scanner including a light source unit, a non-contact temperature sensor, and a control unit that controls an operation of radiating the laser to the area in charge, a weather sensor that measures a temperature and humidity, and an integrated controller that communicates with the plurality of laser scanners. The integrated controller determines whether the laser is radiated to the road surface based on at least one of the measured temperature and humidity, and when the laser radiation is determined, generates a control signal to activate at least one laser scanner, and the control unit determines a heating area, and generates a pulse signal to turn on / off a light source unit so that the laser is radiated in accordance with a shape and range of the heating area.

The present disclosure provides batteries that have a reduced risk or no risk of esophageal or gastrointestinal damage in a conductive aqueous environment, such as when accidentally swallowed. The batteries are, in some embodiments, nominally 9V, 3V or 1.5V coin or button cell-type batteries.

A battery cell, a battery, and an electric device. The battery cell includes a housing assembly, an electrode assembly, and a current collecting member. The housing assembly includes an electrode lead-out portion for inputting or outputting electric energy. The electrode assembly is accommodated in the housing assembly, where the electrode assembly includes a body and a tab, the tab is disposed on the body, and a material of the tab is different from that of the electrode lead-out portion. The current collecting member includes an additional portion having a same material as that of the electrode lead-out portion and a body portion having a same material as that of the tab, the additional portion is connected to the body portion, the additional portion is connected to the electrode lead-out portion through welding, and the body portion is connected to the tab through welding.

The invention relates to the technical field of cell terminal assemblies, and discloses a modular terminal assembly and top cover assembly.The modular terminal assembly and top cover assembly comprises an assembly ring, an injection molding insulating part and a pole which are connected into a whole, the assembly ring is sequentially provided with an annular connecting part, a transition part and a supporting part from bottom to top, and the injection molding insulating part is arranged between the assembly ring and the pole in an injection molding mode; the injection molding insulating part upwards bypasses the supporting part and is glued at the outer side position of the transition part; a plurality of first notches are formed in the inner side of the supporting part in the circumferential direction. A pole flange is arranged at the bottom end of the pole; the outer diameter of the pole flange is greater than the inner diameter of the supporting part; according to the modularized terminal assembly structure, a pole riveting connection mode is canceled, and the prefabricated terminal assembly and the assembling groove are directly subjected to laser welding, so that the installation process is simplified. In addition, an upper pressing plate is omitted in the modularized terminal assembly structure, the problem that the number of parts is too large at present is solved, and the cross section overcurrent capacity is improved.

The utility model relates to the technical field of batteries, and provides a battery shell assembly and a battery. The battery shell assembly comprises a shell part, a pole and a fixing part, the fixing part is fixed on the shell part and is arranged around the same pole through hole, the fixing part and at least part of the shell part are of an integrally formed structure, the fixing part comprises at least two turned-over edges and at least two connecting ribs, and the adjacent turned-over edges are arranged at intervals and are connected through the connecting ribs; the outer edge, deviating from the pole through hole, of the connecting area of the turnup and the shell part comprises an arc line, the extending length of the arc line is a, the extending length of the outer edge, deviating from the pole through hole, of the connecting area of the connecting rib and the shell part is b, and a / b is larger than or equal to 0.3 and smaller than or equal to 2, so that the fixing stability of the turnup to the pole can be improved; and the condition that the stress is excessively concentrated in the forming process due to the fact that the flanging is too long is avoided, so that the damage probability of the flanging can be reduced, the reliable fixation of the post terminal can be ensured by the flanging, and the safe use performance of the battery shell assembly is improved.

The utility model relates to the technical field of batteries, in particular to a top cover assembly, a battery monomer and a battery assembly. The top cover assembly comprises an insulating sheet, a top cover sheet, a negative electrode assembly and a positive electrode assembly, the insulating sheet comprises a first through hole and a second through hole, the top cover sheet comprises a negative electrode part corresponding to the first through hole, a positive electrode part corresponding to the second through hole and a remaining main body part, and the negative electrode assembly is installed on the negative electrode part; the positive electrode part comprises at least one convex part which protrudes towards the direction far away from the insulating sheet relative to the main body part, and the convex part forms the positive electrode assembly; the end surface of one end, far away from the insulating sheet, of the convex part is flush with the end surface of one end, far away from the insulating sheet, of the negative electrode assembly; and the outer convex part and the main body part are integrally formed. The outer convex part formed by stamping the top cover plate is used as the positive electrode, and a sealing ring, a positive electrode terminal, positive electrode upper plastic and other parts in a conventional structure are omitted, so that the cost is greatly reduced.

The electrochemical device includes: a case including a recessed container having a bottom and a side wall, and a cap covering the opening of the recessed container; a power generation element including a laminate having an electrode layer, an electrode layer and a solid electrolyte layer laminated together and contained in the interior space of the case such that the bottom and electrode layer face each other; and a conductive plate located adjacent to the opening of the recessed container and positioned between the electrode layer and cap. The recessed container includes insertion holes with openings in the upper end surface of the side wall. The conductive plate includes elastic locking portions located on edges thereof and corresponding in position to the insertion holes. With each elastic locking portion inserted in an insertion hole, the tip portion of the elastic locking portion presses a side surface of the insertion hole.

The utility model provides a button cell. The button cell comprises a first shell, a second shell, a diaphragm and a second pole piece, the first shell comprises a conducting layer and an insulating layer, a first mounting groove is formed in the middle of the first shell, and the surface of the conducting layer is coated with an active material layer within the range of the first mounting groove; a second mounting groove is formed in the middle of the second shell; the edges of the first shell and the second shell are hermetically connected to form a mounting cavity, at least parts of the first tab and the second tab are exposed out of the mounting cavity, and the diaphragm and the second pole piece are arranged in the mounting cavity. The active material layer is arranged on the surface of the conductive layer of the first shell, so that the problems of non-uniform thickness of the pole piece and falling of the active material layer caused by rolling of the active material layer coated on the pole piece are avoided, the problem of large gram capacity fluctuation is avoided, the gram capacity is more stable, and the battery performance is effectively improved.

The invention relates to a battery, a battery module and a vehicle. The battery comprises a shell, a battery cell and two connecting pieces, at least partial area of the shell is conductive, the battery cell is accommodated in the shell, the two connecting pieces are respectively conducted with two electrodes of the battery cell, one connecting piece is conducted to the conductive area of the shell, and the other connecting piece extends out of the shell and is separated from the conductive area of the shell. And the conductive area of the shell and the connecting sheet extending out of the shell are respectively used for being conducted with an external circuit. According to the battery disclosed by the invention, the connecting sheet conducted with the battery cell electrode is conducted to the conductive area of the shell, so that the battery disclosed by the invention can be conducted with an external circuit through the connecting sheet extending out of the shell and the conductive area of the shell, and thus the current transmission function of the battery disclosed by the invention is realized; the influence of extension of the connecting sheet on the sealing performance is reduced, so that the sealing performance of the battery is improved, and the cost is reduced.

An energy storage device, such as a lithium-ion battery, without tabs connecting the electrode jelly roll to the can, and a method for making the same, is described. A series of flags may be cut, bent, and interleaved with one another to form connection points for upper and lower collector plates within the can. The upper and lower collector plates can be welded directly to the interleaved flags to form connection points for the anode and cathode in the energy storage device.

A disclosed cylindrical lithium primary battery (100) includes: an electrode group (10) in which a positive electrode (1), a negative electrode (2), and a separator (3) are wound; a short-circuit metal sheet (21) disposed on the negative electrode (1); and a battery case that accommodates the electrode group (10) and functions as a negative electrode terminal. The positive electrode (1) includes: a positive electrode current collector having a plurality of through holes; and a positive electrode mixture layer disposed on the positive electrode current collector. The positive electrode has a current collector exposed part (1c) where a part of the positive electrode current collector is exposed. The negative electrode (2) includes a lithium-containing metal sheet. The short-circuit metal sheet (21) contains at least one metal element M selected from the group consisting of copper, iron, nickel, and zinc. At least a part of the short-circuit metal sheet (21) and at least a part of the current collector exposed part (1c) face each other across the separator (3). The short-circuit metal sheet (21) is electrically connected to the battery case not through the lithium-containing metal sheet.

An electrochemical device is provided that allows a conductive plate positioned between the power generation element and cap to be easily mounted and that is capable of maintaining a good electrical connection. The electrochemical device 1 includes: a case 10 including a recessed container 11 having a bottom 111 and a side wall 112, and a cap 12 that covers the opening of the recessed container 11; a power generation element 20 including a laminate having an electrode layer 21, an electrode layer 22 and a solid electrolyte layer 23 laminated together and contained in the interior space of the case 11 such that the bottom 111 and electrode layer 21 face each other; and a conductive plate 30 located adjacent to the opening of the recessed container 11 and positioned between the electrode layer 22 and cap 12. The recessed container 11 includes a plurality of insertion holes 115 with openings in the upper end surface of the side wall 112. The conductive plate 30 includes a plurality of elastic locking portions 31 located on edges thereof and corresponding in position to the insertion holes 115. With each elastic locking portion 31 inserted in an insertion hole 115, the tip portion 311 of the elastic locking portion 31 presses a side surface of the insertion hole 115.

The riveting structure of an electrode terminal for a battery includes a battery housing having a bottom; an electrode terminal riveted through a hole formed in the bottom of the battery housing; and a gasket between the electrode terminal and the battery housing. Also, the electrode terminal includes a body portion inserted into the hole; an outer flange portion extending along an outer surface of the bottom of the battery housing from a first side of the body portion exposed through the outer surface; an inner flange portion extending toward an inner surface of the bottom of the battery housing from a second side of the body portion exposed through the inner surface; and a flat portion on the second side of the body portion.

Provided in the embodiments of the present application are a battery cell, a manufacturing method therefor, a battery and an electrical apparatus. The battery cell comprises a casing (1) provided with a first opening (12); a first end cover (2) sealing the first opening (12) and insulated from the casing (1); and an electrode assembly (3) arranged in the housing (1). The electrode assembly (3) comprises an electrode main body (31), a first tab (32) and a second tab (33), the first tab (32) and the second tab (33) being led out from the electrode main body (31) and having opposite polarities, the first tab (32) being electrically connected to the first end cover (2), and the second tab (33) being electrically connected to the casing (1). The first end cover (2) serves as a first output electrode, and the casing (1) serves as a second output electrode.

An embodiment of the present invention provides a secondary battery capable of concurrently securing a vibration characteristic and an insulation function of an electrode assembly by using one finishing tape. To this end, a secondary battery according to an embodiment of the present invention may comprise: an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate; a can for receiving the electrode assembly; a cap assembly for sealing the can; a first current collection plate provided above the electrode assembly and electrically connected to the first electrode plate and the cap assembly, respectively; a second current collection plate provided under the electrode assembly and electrically connected to the second electrode plate and the can, respectively; and a finishing tape having a first region which has an adhesive layer formed thereat to surround the circumferential surface of the electrode assembly, and a second region which can surround a space beyond the upper end of the electrode assembly.

The invention relates to a battery cell for a high-voltage battery with a cell housing arrangement (4) in which a winding mandrel (14; 38) is arranged, onto which an anode and a cathode foil (48, 50), which are electrically insulated by at least one separator foil (52), are wound, wherein a positive and a negative contact element (16, 18; 34, 36) are provided, which are electrically connected to the corresponding anode and cathode foils, wherein the winding mandrel (14; 38) has an anode and a cathode mandrel part (20, 22; 44, 46) which are electrically insulated from each other by an insulating area (24; 42), wherein an anode and a cathode cover plate (6, 8) are provided at each end of the winding mandrel (14; 38), which are connected to the respective anode and cathode mandrel part (20, 22; 44, 46) and the respective anode and cathode foil (48, 50) are electrically connected.Furthermore, the invention relates to a method for manufacturing such a battery cell.

This cylindrical battery (10) comprises: an outer container which has the shape of a bottomed tube and accommodates an electrode body; a terminal cap (27); a plurality of cathode leads which extend out of the electrode body (14); and an upper current collector plate (50) to which the plurality of cathode leads are connected. The upper current collector plate (50) has a protruding portion (61) which protrudes towards the terminal cap (27) in the axial direction, and the terminal cap (27) has a recessed portion (71) which accommodates at least the tip of the protruding portion (61). Part of the protruding portion (61) at the tip and part of the bottom surface of the recessed portion (71) are connected by a connecting part (75). Between the protruding portion (61) and the recessed portion (71), there is a first passage portion (76) which is radially adjacent to the connecting part (75) and a second passage portion (77) which is linked to the reverse side of the first passage portion (76) from the connecting part in the radial direction and has a maximum axial length that is smaller than the maximum axial length of the first passage portion (76).

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.

An electrochemical device is provided capable of maintaining good electrical connection and providing good sealability. An electrochemical device 1 includes: a case 10 including a recessed container 11 having a bottom 111 and a side wall 112, and a cap 12 that covers the opening of the recessed container 11; a power generation element 20 having a laminate with an electrode layer 21, an electrode layer 22 and a solid electrolyte layer 23 laminated together and housed in the interior space of the case 11 such that the bottom 111 and electrode layer 21 face each other; and a conductive plate 30 positioned adjacent to the opening of the recessed container 11 and between the electrode layer 22 and cap 12. The recessed container 11 includes a plurality of supports 115 on the inner peripheral surface of the side wall 112. The conductive plate 30 includes a plurality of supported portions 31 located on its edges and corresponding in position to the supports 115. With each supported portion 31 supported by its associated support 115, the power generation element 20 is pushed by a spring piece 33 of the conductive plate 30 toward the bottom 111 of the recessed container 11.