Immersion valve assembly and immersion-type secondary battery device with the same

An immersion-type secondary battery device, comprising a box cover, a box body, a battery cell module and an immersion valve assembly, wherein the immersion valve assembly is arranged inside the box cover and comprises:

• a fire-fighting liquid storage chamber, including a fire-fighting liquid outlet facing a battery cell module;
• an immersion valve, and
• a gas exhaust chamber
• wherein an opening/closing cooperation relationship is formed between the fire-fighting liquid outlet and the immersion valve, and the immersion valve is configured to move under the action of a gas pressure and open the fire-fighting liquid outlet when thermal runaway occurs to the battery cell module;
• wherein an opening/closing cooperation relationship is formed between a gas inlet of the gas exhaust chamber and the immersion valve, and the immersion valve is configured to move under the action of the gas pressure and open the gas inlet when the thermal runaway occurs to the battery cell module;
• wherein a partition plate is arranged between the fire-fighting liquid storage chamber and the gas exhaust chamber, and the immersion valve penetrates the partition plate;
• wherein an upper part of the immersion valve extends outwards and forms an upper sealing plate, a seal being formed between the upper sealing plate and the fire-fighting liquid outlet;
• wherein a lower part of the immersion valve extends outwards and forms a lower sealing plate, a seal being formed between the lower sealing plate and the gas inlet;
• wherein each of two opposite sides of the immersion valve are configured as an inwardly recessed surface, and the inwardly recessed surface includes a first inclined surface and a second inclined surface;
• and
• wherein the first inclined surface is configured to abut against or separate from the partition plate, and the second inclined surface is configured to guide fire-fighting liquid to flow to the fire-fighting liquid passage.

An immersion valve assembly, comprising:

• a fire-fighting liquid storage chamber, including a fire-fighting liquid outlet configured to face a battery cell module;
• an immersion valve, and
• a gas exhaust chamber;
• wherein an opening/closing cooperation relationship is formed between the fire-fighting liquid outlet and the immersion valve, and the immersion valve is configured to move under the action of a gas pressure and open the fire-fighting liquid outlet;
• wherein an opening/closing cooperation relationship is formed between a gas inlet of the gas exhaust chamber and the immersion valve, and the immersion valve is configured to move under the action of the gas pressure and open the gas inlet;
• wherein a partition plate is arranged between the fire-fighting liquid storage chamber and the gas exhaust chamber, and the immersion valve penetrates the partition plate;
• wherein an upper part of the immersion valve extends outwards and forms an upper sealing plate, a seal being formed between the upper sealing plate and the fire-fighting liquid outlet;
• wherein a lower part of the immersion valve extends outwards and forms a lower sealing plate, a seal being formed between the lower sealing plate and the gas inlet;
• wherein an end face of the immersion valve includes a first groove and a second groove crossing each other;
• wherein the first groove is configured to connect the fire-fighting liquid storage chamber with the gas exhaust chamber, and the second groove is configured to connect the gas exhaust chamber on both sides of the immersion valve;
• and
• wherein the first groove and the second groove are configured to avoid the gas inlet.