7results about How to "Reduce forming force" patented technology

The utility model provides a battery and electric equipment, and relates to the field of batteries. A battery includes a battery cell and a support. The battery monomer comprises a shell and a pressure relief component, the shell comprises a first wall part, and the pressure relief component is arranged on the first wall part. The pressure relief part comprises a first groove, and the pressure relief part is configured to be capable of cracking along the first groove when the battery monomer is subjected to pressure relief. The supporting piece supports the first wall part and is provided with a supporting face facing the first wall part, and the supporting face is provided with an avoiding part. The projection of the first groove is located in the avoiding part in the thickness direction of the first wall part. The avoiding part is arranged on the supporting piece, and the projection of the first groove in the thickness direction of the first wall part is located in the avoiding part, so that the avoiding part can avoid the first groove, the supporting piece is not easy to abut against the outer side of the first groove when the battery monomer is subjected to pressure relief, the cracking of the first groove is not easy to inhibit, and the service life of the battery monomer is prolonged. Therefore, the first groove can crack in time when the battery monomer is decompressed, and the reliability of the battery is improved.

The utility model provides a battery monomer, a battery and electric equipment. The battery monomer comprises a shell; the shell comprises a first wall part, the first wall part is provided with a first groove, the first groove is sunken from a first surface in the thickness direction of the first wall part to a direction close to a second surface, the first groove defines at least one preset pressure relief area, and the first wall part is configured to be capable of cracking along at least part of the first groove when the battery monomer is subjected to pressure relief; wherein the sum S1 of the areas of all the preset pressure relief areas is 0.03-0.3 time of the area S2 of the first surface, so that the risks of burst, explosion, fire and the like of the shell of the battery monomer caused by untimely pressure relief of the first wall part can be reduced; and the risk of liquid leakage caused by phenomena such as advanced actuation or fatigue cracking of the first wall part after the battery monomer is used for a long time is reduced, so that the service life of the battery monomer is prolonged, and the use reliability of the battery monomer is improved.

The present invention relates to a laser repair system and method based on light alloy powder preheating, the system includes a fixed support structure, a laser light source, a preheating extrusion mechanism, and a powder feeding mechanism. After receiving the surface damage data of the structural part, the intelligent control host intelligently identifies the damaged area of ​​the structural part, slices it in layers, and plans the repair path and preliminary process parameters. At the same time, the powder feeding mechanism and the induction preheating device are controlled to heat and melt the required light alloy powder before the repair process begins, and the damaged area is repaired in conjunction with the laser heat source. Subsequently, the induction heating power is reduced and the laser power is increased, so as to achieve the purpose of improving the powder utilization rate in the laser repair process and improving the surface repair quality of the structural part. The present invention provides a solution for preheating powder consumables before the laser repair process begins, which effectively improves the adhesion of metal consumables on the surface of the damaged area, and provides technical support for improving the powder utilization rate in the laser repair process.

The embodiments of the present application provide a pressure relief device, a battery cell, a battery and an electrical device, which belong to the field of battery technology. Among them, the pressure relief device includes a pressure relief portion and a multi-stage notched groove, and the pressure relief portion has a first surface and a second surface relative to each other in the thickness direction. The multi-stage notched grooves are sequentially arranged on the pressure relief portion along the direction from the first surface to the second surface. In the two adjacent notched grooves in the thickness direction, the first-stage notched groove far away from the first surface is arranged on the bottom surface of the first-stage notched groove close to the first surface. The pressure relief device of this structure adopts a multi-stage notched groove structure, which can reduce the forming depth of each stage of the notched groove, thereby reducing the forming force on the pressure relief portion when forming each stage of the notched groove, reducing the risk of cracks in the pressure relief portion, and the pressure relief device is not easy to fail due to cracks in the pressure relief portion at the position where the notched groove is set, thereby improving the long-term reliability of the pressure relief device.

The utility model discloses a new energy vehicle charging connector body precision forging forming die which comprises a connecting handle part, a head part extending for a set distance along an arc path, a prefabricated stepped hole formed in the back arch position of a connecting area of the connecting handle part and the head part in an inwards-concave mode and perpendicular to the end face of the head part, and a lower die and an upper die which can be opened and closed. The lower die and the upper die form a cavity with a charging connector body in a supine posture, the surface of the cavity used for forming the end face part of the head is horizontally arranged, located on the upper die and located at a high position, and a containing cavity used for containing an extrusion head and a sliding cavity used for guiding the extrusion head in a sliding mode are further formed in the lower die. The extrusion head is used for stretching into the cavity to form a prefabricated stepped hole and a head after the lower die and the upper die are closed.

The application provides a battery cell, a battery device and a power utilization device. The battery cell comprises a shell and a pressure relief mechanism, the shell has a wall portion, and the pressure relief mechanism is arranged on the wall portion. The pressure relief mechanism is provided with a weak portion configured to be at least partially destroyed when the pressure or temperature in the battery cell reaches a threshold value. The pressure relief mechanism is provided with a plurality of grooves, the plurality of grooves comprises a first groove and a second groove, the weak portion is arranged outside the first groove, and the second groove is arranged outside the weak portion. When a part of the pressure relief mechanism located in the area surrounded by the first groove is subjected to an external force, the position of the pressure relief mechanism provided with the first groove is prone to deformation and absorption of the external force; when a part of the pressure relief mechanism located outside the area surrounded by the second groove is subjected to an external force, the position of the pressure relief mechanism provided with the second groove is prone to deformation and absorption of the external force, thereby reducing the stress transmitted to the weak portion, reducing the risk of premature cracking of the weak portion, and being beneficial to improving the service life of the battery cell.

The invention relates to the technical field of rolling forming, and discloses a rolling double-point incremental forming device and method.The rolling double-point incremental forming device comprises a rolling rod, a plate is fixedly arranged on the inner wall of a blank holder, when the rolling rod moves, a fixed shaft is driven to move, a roller synchronously moves along with the fixed shaft, and in the moving process of the rolling rod, pressure is applied to the roller, so that the rolling rod is driven to rotate; according to the incremental forming method, the rolling wheel rolls on the surface of the plate, pressure is applied to the plate, the surface of the plate is gradually recessed by means of continuous rolling of the rolling wheel, the quality of the surface left when the tool head makes contact with the plate is improved, forming force and forming defects in the forming process are reduced, and the application range of incremental forming is further expanded.