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CN-224217561-U - Battery and battery module

CN224217561UCN 224217561 UCN224217561 UCN 224217561UCN-224217561-U

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a battery and a battery module, wherein the battery comprises a shell, the shell is provided with a first side wall and a second side wall which are oppositely arranged along a first direction, the first side wall is provided with a first clamping part, and the second side wall is provided with a second clamping part; the first clamping part of one battery of the adjacent batteries is matched with the second clamping part of the other battery in a clamping way, one of the first clamping part and the second clamping part matched in a clamping way is a clamping protrusion, and the other is a clamping groove. The battery module comprises a plurality of batteries, and the batteries are sequentially arranged along the first direction. The adjacent batteries of the battery module are not easy to shake relatively, so that the insulation film is prevented from being adhered and invalid, the insulation performance of the batteries is guaranteed, the heat dissipation of the batteries is not affected, and the cost is not excessively increased.

Inventors

  • HAN BO
  • CHEN KAI
  • LI ZHENG
  • FENG YUCHUAN

Assignees

  • 苏州清陶新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250430

Claims (10)

  1. 1. The battery is characterized by comprising a shell (1), wherein the shell (1) is provided with a first side wall (11) and a second side wall (12) which are oppositely arranged along a first direction, the first side wall (11) is provided with a first clamping part (111), the second side wall (12) is provided with a second clamping part (121), the first clamping part (111) of one of two adjacent batteries is matched with the second clamping part (121) of the other battery in a clamping way, one of the first clamping part (111) and the second clamping part (121) in the clamping way is a clamping protrusion (101), and the other is a clamping groove (102).
  2. 2. The battery according to claim 1, wherein the first clamping portion (111) is arranged through the first side wall (11) along a second direction, and the second clamping portion (121) is arranged through the second side wall (12) along the second direction, and the second direction is perpendicular to the first direction.
  3. 3. The battery according to claim 2, wherein the outer wall of the clamping projection (101) is an arc line in a section perpendicular to the plane of the second direction, and the outer wall of the clamping projection (101) is attached to the inner wall of the clamping groove (102).
  4. 4. The battery according to any one of claims 1 to 3, further comprising a winding core (2), wherein the winding core (2) is arranged in the housing (1), the axial direction of the winding core (2) is in a second direction, two ends of the winding core (2) in a third direction are arc portions, the whole arc portions are semi-cylindrical, the radius of the arc portions is R2, the width of the first clamping portion (111) in the third direction is W1, W1< R2 is satisfied, and the first direction, the second direction and the third direction are perpendicular to each other.
  5. 5. The battery according to claim 4, wherein the second clamping portion (121) has a width W2 in the third direction, satisfying W2< R2.
  6. 6. The battery according to claim 5, wherein a width W1 of the first engaging portion (111) in the third direction and a radius R2 of the circular arc portion satisfy 0.05≤w1/r2≤1; And/or the width W2 of the second clamping part (121) in the third direction and the radius R2 of the arc part meet the condition that W2/R2 is more than or equal to 0.05 and less than or equal to 1.
  7. 7. A battery according to any one of claims 1-3, characterized in that the ratio of the projection height h1 of the snap-in projection (101) to the depression depth h2 of the snap-in groove (102) in the first direction is in the range of 0.8-1.2; and/or, along the first direction, the value range of the protrusion height h1 of the clamping protrusion (101) is 0.3mm-0.7mm; And/or, along the first direction, the value range of the concave depth h2 of the clamping groove (102) is 0.3mm-0.7mm.
  8. 8. A battery according to any one of claims 1-3, characterized in that a plurality of the first clamping parts (111) are arranged on the first side wall (11), a plurality of the second clamping parts (121) are arranged on the second side wall (12), a plurality of the first clamping parts (111) are distributed at two ends of the first side wall (11) along the first direction, and a plurality of the second clamping parts (121) are distributed at two ends of the second side wall (12) along the first direction.
  9. 9. A battery according to any one of claims 1-3, characterized in that the root of the snap-in projection (101) has a curved transition (103); And/or the opening edge of the clamping groove (102) is provided with a curved transition (103).
  10. 10. A battery module, comprising a plurality of batteries according to any one of claims 1 to 9, wherein the plurality of batteries are sequentially arranged along the first direction, and the first clamping part (111) on one of the adjacent two batteries is matched with the second clamping part (121) on the other battery in a clamping way.

Description

Battery and battery module Technical Field The utility model relates to the technical field of energy storage equipment, in particular to a battery and a battery module. Background The metal shell of the battery is easy to be electrically connected with an external structure for short circuit, so that an insulating film is generally covered on the metal shell of the battery, and the use safety of the battery is ensured. Under the working conditions of long-term vibration, temperature change or external force impact and the like, the battery module is easy to shake relatively between adjacent batteries, friction and shearing stress are easy to generate between contact surfaces of the two batteries, adhesion failure between an insulating film and the surface of a battery shell is easy to cause, film material rupture or edge peeling is easy to cause, the insulating performance of the battery is reduced, and short circuit risks are brought. The prior art prevents the separation of the insulating film by increasing the amount of adhesive, but increases the cost and affects the heat dissipation of the battery. In addition, the outer frame is used for reinforcing the arranged batteries, so that relative shaking among the batteries can be reduced, but the weight and the volume of the battery module can be increased by the outer frame. Further, simply thickening the insulating film can prevent the insulating film from cracking, but it causes an increase in thermal resistance. The adoption of the UV glue spraying process can increase the firmness of the bonding of the insulating film and the shell, but the cost is increased, and uneven thickness at the corners of the shell is caused. Disclosure of utility model The utility model aims to provide a battery, adjacent batteries are not easy to shake relatively, so that the bonding failure of an insulating film is avoided, the insulating performance of the battery is ensured, the heat dissipation of the battery is not influenced, and the cost is not excessively increased. To achieve the purpose, the utility model adopts the following technical scheme: The battery comprises a shell, wherein the shell is provided with a first side wall and a second side wall which are oppositely arranged along a first direction, a first clamping part is arranged on the first side wall, a second clamping part is arranged on the second side wall, the first clamping part of one of two adjacent batteries is matched with the second clamping part of the other battery in a clamping way, one of the first clamping part and the second clamping part in the clamping way is a clamping protrusion, and the other is a clamping groove. Optionally, the first clamping portion is arranged on the first side wall in a penetrating manner along a second direction, the second clamping portion is arranged on the second side wall in a penetrating manner along the second direction, and the second direction is perpendicular to the first direction. Optionally, the cross section of the outer wall of the clamping protrusion along the plane perpendicular to the second direction is an arc line, and the outer wall of the clamping protrusion is attached to the inner wall of the clamping groove. Optionally, the roll core is arranged in the shell, the axial direction of the roll core is in a second direction, two ends of the roll core in a third direction are arc portions, the whole arc portions are semi-cylindrical, the radius of each arc portion is R2, the width of each first clamping portion in the third direction is W1, W1< R2 is met, and the first direction, the second direction and the third direction are perpendicular to each other. Optionally, the width of the second clamping portion in the third direction is W2, and W2< R2 is satisfied. Optionally, the width W1 of the first clamping part in the third direction and the radius R2 of the arc part meet the condition that W1/R2 is more than or equal to 0.05 and less than or equal to 1; And/or the width W2 of the second clamping part in the third direction and the radius R2 of the arc part meet the condition that W2/R2 is more than or equal to 0.05 and less than or equal to 1. Optionally, along the first direction, the ratio of the protruding height h1 of the clamping protrusion to the recessed depth h2 of the clamping groove ranges from 0.8 to 1.2; And/or, along the first direction, the value range of the protrusion height h1 of the clamping protrusion is 0.3mm-0.7mm; And/or, along the first direction, the value range of the concave depth h2 of the clamping groove is 0.3mm-0.7mm. Optionally, the first side wall is provided with a plurality of first clamping parts, the second side wall is provided with a plurality of second clamping parts, a plurality of first clamping parts are distributed at two ends of the first side wall along the first direction, and a plurality of second clamping parts are distributed at two ends of the second side wall along the first direction. Optio