Search

CN-224217470-U - Battery cell

CN224217470UCN 224217470 UCN224217470 UCN 224217470UCN-224217470-U

Abstract

The utility model discloses a battery, which comprises a first shell, a second shell, a positive electrode ring, a positive electrode plate and a negative electrode plate which are arranged in an insulating way, wherein an accommodating space is formed by surrounding the first shell and the second shell together. The positive pole ring sets up in accommodation space, and the positive pole ring includes installation department and first conductive part, and the installation department encloses to establish and forms installation space, and first conductive part sets up in one side of installation space, is formed with the space of stepping down between first conductive part and the installation space, and at least partial first conductive part extends to the direction of keeping away from accommodation space, and first conductive part one end is connected in the installation department, and the other end butt takes place elastic deformation in first casing and towards the direction that is close to accommodation space. The positive plate is inserted into the accommodation space and is electrically connected with the first case through the positive ring. The negative plate is arranged in the accommodating space and is electrically connected with the second shell. The battery solves the technical problem that the battery performance is reduced due to the gas generated by the battery in the use process.

Inventors

  • HAN DANDAN
  • CAO LANG
  • SUN PEILING

Assignees

  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260508
Application Date
20250423

Claims (12)

  1. 1. A battery, comprising: The first shell and the second shell are arranged in an insulating manner, and an accommodating space is formed by surrounding the first shell and the second shell together; The positive electrode ring is arranged in the accommodating space, the positive electrode ring comprises an installation part and a first conductive part, the installation part is surrounded to form an installation space, the first conductive part is arranged on one side of the installation space, a yielding space is formed between the first conductive part and the installation space, at least part of the first conductive part extends in a direction away from the accommodating space, one end of the first conductive part is connected with the installation part, and the other end of the first conductive part is abutted to the first shell and elastically deforms in a direction close to the accommodating space; A positive plate inserted in the accommodation space and electrically connected to the first case through the positive ring; And the negative plate is arranged inside the accommodating space and is electrically connected with the second shell.
  2. 2. The battery according to claim 1, wherein the first conductive portion includes a first sub-portion that is disposed on one side of the mounting space and extends in a direction away from the accommodating space, the first sub-portion is surrounded to form the relief space, one end of the first sub-portion is connected to the mounting portion, and the other end of the first sub-portion is abutted to the first housing and is elastically shaped in a direction approaching the accommodating space.
  3. 3. The battery of claim 2, wherein the first conductive portion includes a second sub-portion, the first sub-portion and the second sub-portion are collectively enclosed to form the space for relief, the second sub-portion is disposed on a side of the space for relief away from the mounting space, and an included angle between the second sub-portion and the axis of the accommodating space is greater than an included angle between the first sub-portion and the axis of the accommodating space.
  4. 4. The battery of claim 2, wherein the first sub-portion and the receiving space axis have an included angle C of 60 ° -C +.80°.
  5. 5. The battery according to claim 1, wherein the width of the accommodation space gradually increases in a direction away from the relief space.
  6. 6. The battery according to claim 5, wherein an angle between an inner wall of the mounting portion and an axial direction of the accommodation space is E, and E is 5 ° or more and 13 ° or less.
  7. 7. The battery according to claim 1, wherein the mounting portion has a size H1 and the first conductive portion has a size H2, 0.8≤h1/h2≤3.2 in the axial direction of the accommodating space.
  8. 8. The battery of claim 1, wherein the positive electrode ring has a wall thickness D1,0.1 (millimeters) d1 0.3 (millimeters).
  9. 9. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells, The positive plate protrudes out of the installation space in a direction away from the yielding space; The battery comprises a diaphragm, the diaphragm is covered on the edge of the positive plate and covers the mounting part so as to separate the positive plate from the negative plate, and the positive plate, the diaphragm and the mounting part enclose together to form a spacing space.
  10. 10. The battery according to claim 9, wherein the positive electrode tab protrudes from the mounting space by a dimension H3,0.02 (mm) H3 1 (mm) in the axial direction of the accommodation space.
  11. 11. The battery of claim 1, wherein the first conductive portion is provided with an opening, the opening being in communication with the relief space; The battery comprises a second conductive part, the second conductive part penetrates through the opening to be arranged in the abdication space, one end of the second conductive part is connected with the first shell, and the other end of the second conductive part is abutted to the positive plate.
  12. 12. The cell defined in claim 11, wherein the opening has a radius R1 and the receptacle has a diameter R2,0.2 ∈r1/r2 ∈0.8.

Description

Battery cell Technical Field The utility model relates to the technical field of batteries, in particular to a battery. Background Lithium manganese dioxide batteries are a common battery widely used in the fields of consumer electronics, energy storage systems, electric tools, and the like. The electrolyte comprises a negative bottom shell, a negative electrode, a diaphragm, a positive electrode (comprising a positive current collector), a positive electrode shell and electrolyte. Among these components, the positive electrode current collector plays a role of current conduction, and its design has an important influence on the performance, life span, and use stability of the battery. Currently, the positive electrode current collector of lithium manganese dioxide batteries generally adopts two designs, namely a bowl-shaped ring structure and a current collecting net sheet structure. However, during use, gas may be generated inside the lithium metal button cell, resulting in a higher expansion of the cell. With the occurrence of expansion, the contact surface of the positive current collector and the steel shell is gradually reduced, so that the discharge performance and the pulse capacity of the battery are gradually reduced, and the requirement of high-temperature application cannot be met. Disclosure of utility model An object of the present utility model is to provide a battery, which aims to solve the technical problem of degradation of battery performance caused by gas generated by the battery during use. In order to achieve the purpose, the battery comprises a first shell, a second shell, a positive electrode ring, a positive electrode plate and a negative electrode plate which are arranged in an insulating mode, wherein an accommodating space is formed in the first shell and the second shell in a surrounding mode. The positive pole ring sets up in accommodation space, and the positive pole ring includes installation department and first conductive part, and the installation department encloses to establish and forms installation space, and first conductive part sets up in one side of installation space, is formed with the space of stepping down between first conductive part and the installation space, and at least partial first conductive part extends to the direction of keeping away from accommodation space, and first conductive part one end is connected in the installation department, and the other end butt takes place elastic deformation in first casing and towards the direction that is close to accommodation space. The positive plate is inserted into the accommodation space and is electrically connected with the first case through the positive ring. The negative plate is arranged in the accommodating space and is electrically connected with the second shell. Optionally, the first conductive part includes a first sub-part, the first sub-part is disposed at one side of the installation space and extends towards a direction far away from the accommodation space, the first sub-part encloses and forms an abdication space, one end of the first sub-part is connected with the installation part, and the other end of the first sub-part is abutted to the first shell and generates an elastic component towards a direction close to the accommodation space. Optionally, the first conductive part includes a second sub-part, the first sub-part and the second sub-part enclose together to form a space of stepping down, the second sub-part is arranged on one side of the space of stepping down away from the installation space, and the included angle between the second sub-part and the axis of the accommodation space is larger than the included angle between the first sub-part and the axis of the accommodation space. Optionally, the first sub-portion and the axis of the accommodation space have an angle C of 60 ° or more and 80 ° or less. Optionally, the width of the accommodating space gradually increases in a direction away from the yielding space. Optionally, an included angle between the inner wall of the mounting part and the axial direction of the accommodating space is E, and E is more than or equal to 5 degrees and less than or equal to 13 degrees. Optionally, along the axial direction of the accommodating space, the size of the mounting part is H1, the size of the first conductive part is H2, and H1/H2 is more than or equal to 0.8 and less than or equal to 3.2. Optionally, the wall thickness of the positive electrode ring is D1, and D1 is more than or equal to 0.1 (millimeter) and less than or equal to 0.3 (millimeter). Optionally, the positive plate protrudes out of the mounting space in a direction away from the abdication space; The battery comprises a diaphragm, the diaphragm is covered on the edge of the positive plate and covers the mounting part to separate the positive plate from the negative plate, and the positive plate, the diaphragm and the mounting part enclose together to form a spacing space.