Apparatus for analyzing battery case
The present disclosure relates to an apparatus and a method for analyzing a battery case, specifically, to the apparatus for analyzing the durability of various types of battery case, such as a pouch type or can type. The apparatus comprises a first plate which is in close contact with an outer surface of a first sheet, the first sheet forming one side of the battery case; a gas injection tube which is inserted into the battery case while penetrating through the first plate and extends along an inner surface of the first sheet; and a pressure gauge which is connected to the gas injection tube.
1. An apparatus for analyzing a battery case, the apparatus comprising:
a first plate which is configured to adhere to an outer surface of a first sheet forming one side of a battery case, the outer surface of the first sheet being the outermost surface of the one side of the battery case;
a gas injection tube which is configured to be inserted into the battery case while penetrating through the first plate and extends along an inner surface of the first sheet, and through which gas is injected into the battery case;
a pressure gauge which is connected to the gas injection tube to measure a pressure of the gas injection tube and which detects internal pressure of the battery case; and
a mass flow controller which is connected to the gas injection tube and controls an amount of gas injected into the battery case,
wherein the first plate is provided with a penetrating hole through which the gas injection tube penetrates, and
wherein the penetrating hole is filled with a curing agent while being penetrated by the gas injection tube.
2. The apparatus according to claim 1 , wherein the surface of the first plate facing the battery case is provided with an insertion groove into which the gas injection tube is inserted.
3. The apparatus according to claim 2 , wherein the insertion groove is formed to extend from the penetrating hole to the end portions of the first plate.
4. The apparatus according to claim 3 , wherein the insertion groove is provided in plural, and each insertion groove extends in different directions.
5. The apparatus according to claim 2 , wherein the width of the insertion groove is larger than the outer diameter of the gas injection tube.
6. The apparatus according to claim 1 , further comprising a cover plate for covering the penetrating hole on the surface opposite to the surface of the first plate facing the battery case,
wherein the gas injection tube is inserted into the battery case while penetrating through the injection hole provided in the cover plate and
the outer peripheral surface of the gas injection tube is adhered to the inner peripheral surface of the injection hole to be sealed.
7. The apparatus according to claim 6 , wherein an adhesion member is inserted between the first plate and the cover plate,
the adhesion member is provided in the form of a closed loop, and
the inlet of the penetrating hole is located inside the closed loop.
8. The apparatus according to claim 1 , further comprising:
a second plate which is in close contact with a second sheet, the second sheet forming the other side of the battery case; and
a fixing unit for fixing the first plate and the second plate to each other while the battery case being pressed with the first plate and the second plate.
9. The apparatus according to claim 8 , wherein materials of the first plate and the second plate comprises at least one of SUS, bakelite and Si.
10. The apparatus according to claim 1 , wherein the pressure gauge is connected to the position of the gas injection tube not inserted into the battery case.
11. The apparatus according to claim 1 , wherein a plurality of exhaust holes are provided on the lateral surface of the portion of the gas injection tube inserted into the battery case.