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CN-224232759-U - Rechargeable solid-state battery

CN224232759UCN 224232759 UCN224232759 UCN 224232759UCN-224232759-U

Abstract

The utility model discloses a chargeable solid-state battery, which comprises a cap assembly, a winding cell assembly and a metal shell, wherein one side of the metal shell is sealed, the other side of the metal shell is open, a spinning edge is arranged at the opening, a groove is arranged on the side surface of the metal shell, the concave side wall of the groove, the side wall of the metal shell and a connecting wall form a whole, the winding cell assembly is arranged between the bottom of the metal shell seal and the groove, the cap assembly is arranged between the spinning edge and the groove, a corrosion-resistant plastic sealing ring is arranged in the cap assembly and consists of an upper annular side wall, a lower annular side wall and a baffle plate, a through hole is formed in the baffle plate, an explosion-proof valve is arranged in the upper annular side wall, the explosion-proof valve is mechanically pressed with the baffle plate through the spinning edge, the upper annular side wall is tightly matched with the side wall of the metal shell, the lower annular side wall is tightly matched with the concave side wall, and the baffle plate is tightly matched with the connecting wall. The rechargeable solid-state battery disclosed by the utility model has the advantages of low leakage risk, larger cell volume ratio and low assembly cost.

Inventors

  • WEI JINXIANG

Assignees

  • 华以新能源(深圳)有限公司

Dates

Publication Date
20260512
Application Date
20250430

Claims (10)

  1. 1. The utility model provides a chargeable solid-state battery, includes cap subassembly, coiling electric core subassembly and metal casing, and metal casing one side seals the opposite side and opens, and open department is equipped with the spinning limit, and metal casing side still is equipped with the recess, and the indent lateral wall of recess and metal casing lateral wall pass through the connecting wall and connect into a whole, and coiling electric core subassembly is fixed to be set up between metal casing seals bottom and recess, and cap subassembly is fixed to be set up between spinning limit and recess, its characterized in that, the built-in corrosion-resistant plastic sealing washer that has of cap subassembly, corrosion-resistant plastic sealing washer comprises last annular lateral wall, lower annular lateral wall, baffle, and last annular lateral wall external diameter equals with the baffle external diameter, locates baffle one side, and lower annular lateral wall external diameter is less than the baffle external diameter, locates the baffle opposite side, and the baffle is inside to be opened to have the through-hole, and the through-hole internal diameter is less than lower annular lateral wall internal diameter, and explosion-proof valve passes through limit and baffle realization machinery to compress tightly, goes up annular lateral wall and metal casing lateral wall tight fit, lower annular lateral wall tight fit with the indent lateral wall, baffle tight fit, and connecting wall tight fit.
  2. 2. The rechargeable solid state battery of claim 1, wherein the electrolyte inside the wound cell assembly is a solid state electrolyte, and the solid state electrolyte is one of an oxide electrolyte, a sulfide electrolyte, a polymer electrolyte, and a composite electrolyte.
  3. 3. The rechargeable solid-state battery of claim 1, wherein the explosion-proof valve is circular, a connecting part is arranged at the outer side of the explosion-proof valve, a kidney-shaped body which is sunken towards one side is arranged in the middle of the explosion-proof valve, a sinking groove is formed in the middle of the body in a sunken mode, and a notch is arranged on the sinking groove.
  4. 4. The rechargeable solid-state battery of claim 1, wherein the baffle is further provided with a communication channel, the communication channel being disposed between the lower annular sidewall and the through hole.
  5. 5. The rechargeable solid-state battery of claim 1, wherein the cap assembly is further provided with a PTC, steel cap in sequence on the side of the corrosion-resistant plastic seal ring remote from the wound cell assembly.
  6. 6. The rechargeable solid-state battery of claim 5, wherein said cap assembly further comprises a CID on the side of the corrosion-resistant plastic seal adjacent to the wound cell assembly, the CID rapidly cutting off current when the battery is overheated and shorted.
  7. 7. The rechargeable solid-state battery of claim 6, wherein the wound cell assembly comprises a cell, a positive electrode tab, a negative electrode tab, an upper insulating sheet and a lower insulating sheet, the negative electrode tab is folded from the side surface of the wound cell assembly to the bottom surface, a lower insulating gasket is arranged between the bottom surface of the wound cell assembly and the negative electrode tab, the negative electrode tab is electrically connected with the inner side of the metal shell, the positive electrode tab passes through the upper insulating sheet and the CID after being electrically connected with the CID, passes through the explosion-proof valve, is sequentially electrically connected with the PTC and the high-voltage positive electrode of the voltage-reducing plate, is connected with the low-voltage positive electrode of the voltage-reducing plate, and is electrically connected with the negative electrode of the voltage-reducing plate after spinning.
  8. 8. The rechargeable solid-state battery of claim 7, wherein the negative tab is welded inside the metal can.
  9. 9. A rechargeable solid-state battery according to claim 5 or 6, wherein said PTC is replaced by a nickel ring.
  10. 10. The rechargeable solid-state battery of any one of claims 1-7, wherein said metal casing is further provided with an indicator light, said indicator light being connected to the internal circuitry of the battery, said indicator light being on when charged and being on another color or off when full.

Description

Rechargeable solid-state battery Technical Field The utility model relates to the technical field of batteries, in particular to a rechargeable solid-state battery. Background In daily life, the batteries No. 5 and No. 7 are widely applied, most of the batteries on the market are disposable batteries, the batteries cannot be continuously recycled, and the waste dry batteries cannot be recycled, so that the environment is easily polluted. Chinese patent document CN203787480U discloses a variable voltage cylindrical battery device, which converts the high voltage (3.0-4.2V) of a lithium battery into a low voltage of 1.5V through a voltage drop circuit board to replace a common battery. The existing lithium battery electrolyte is easy to leak mainly in liquid state and has the risk of corroding the depressurization plate, and the common depressurization method is to add a depressurization component outside the lithium battery, and then package the lithium battery and the depressurization component into a shell to assemble the 1.5V battery. Although the problem of corrosion and voltage reduction of the voltage reduction plate is solved by the battery after secondary assembly, the voltage reduction assembly is externally arranged, so that the battery cell space is occupied, the battery cell volume ratio is reduced, and the materials and the cost are increased by the one-time packaging process. Disclosure of utility model The utility model aims to provide a rechargeable battery with a built-in voltage reducing component. The technical scheme adopted by the rechargeable battery disclosed by the utility model is as follows: The utility model provides a chargeable solid-state battery, includes cap subassembly, coiling electric core subassembly and metal casing, and metal casing one side seals the opposite side and opens, and open department is equipped with the spinning limit, and metal casing side still is equipped with the recess, and the indent lateral wall of recess and metal casing lateral wall pass through the connecting wall and connect into a whole, and coiling electric core subassembly is fixed to be set up between metal casing seals bottom and recess, and the cap subassembly is fixed to be set up between spinning limit and recess, the built-in corrosion-resistant plastic sealing washer that has of cap subassembly, and corrosion-resistant plastic sealing washer comprises last annular lateral wall, lower annular lateral wall, baffle, and last annular lateral wall external diameter equals with the baffle external diameter, locates baffle one side, and lower annular lateral wall external diameter is less than the baffle external diameter, locates the baffle opposite side, and the baffle is inside to be opened there is the through-hole, and the through-hole internal diameter is less than lower annular lateral wall internal diameter, and explosion-proof valve is arranged in last annular lateral wall, and the mechanical compression is realized through limit and baffle, last annular lateral wall and metal casing lateral wall tight fit, lower annular lateral wall and indent lateral wall tight fit, baffle and connecting wall spinning tight fit, through recess, metal casing and corrosion-resistant sealing washer are realized many times. Further, the electrolyte in the winding cell assembly is a solid electrolyte, and the solid electrolyte is one of oxide electrolyte, sulfide electrolyte, polymer electrolyte and composite electrolyte. Further, the explosion-proof valve is circular, the outer side of the explosion-proof valve is provided with a connecting part, the middle of the explosion-proof valve is provided with a kidney-shaped body which is sunken to one side, the middle of the body is sunken to form a sinking groove, and the sinking groove is provided with a nick. Further, the baffle is also provided with a communication channel, and the communication channel is arranged between the lower annular side wall and the through hole. Furthermore, the cover cap component is further provided with a PTC and a steel cap in sequence at one side of the corrosion-resistant plastic sealing ring, which is far away from the winding cell component. Furthermore, the cover cap component is also provided with a CID at one side of the corrosion-resistant plastic sealing ring, which is close to the winding cell component, and the CID rapidly cuts off current when the battery is overheated and short-circuited. Further, the winding battery core assembly comprises a battery core, a positive electrode tab, a negative electrode tab, an upper insulating sheet and a lower insulating sheet, wherein the negative electrode tab is folded to the bottom surface from the side surface of the winding battery core assembly, a lower insulating gasket is arranged between the bottom surface of the winding battery core assembly and the negative electrode tab, the negative electrode tab is electrically connected with the inner side of a metal shell, the p