Flame-retardant explosion-proof battery pack
A flame-retardant and explosion-proof technology for battery packs, which is applied to battery pack components, batteries, secondary batteries, etc., can solve problems such as combustion, battery damage, leakage, and life reduction, so as to ensure safety performance, prolong service life, and avoid short circuit effect
Active Publication Date: 2014-03-26
MICROVAST POWER SYST CO LTD
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Problems solved by technology
[0003] As the main energy storage device of electric vehicles, the power battery pack is generally formed by connecting multiple batteries in series and parallel. Due to the occurrence of some side reactions during the charging and discharging process of the battery, the side reactions will generate a certain amount of gas. When the generated gas When the internal pressure of the battery pack is increased to a certain level, the gas will open the aluminum-plastic film on the surface of the battery, resulting in battery damage and leakage; after the battery is damaged, oxygen and water in the air may enter the battery, and the battery will The active ingredients in the battery have side reactions, which lead to the attenuation of battery capacity and the reduction of life, and even cause combustion
Method used
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[0028] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] like Figure 1-Figure 3 As shown, the flame-retardant and explosion-proof battery pack provided by the present invention includes a sheet battery 1 provided with electrodes, a battery box 2, a battery box cover 21 and an insulating flame-retardant liquid 5 arranged in the battery box 2. The battery box 2 A sealing rubber pad 3 is provided between the battery case cover 21, and a one-way pressure relief valve 4 is provided on the battery case cover 21; the sheet battery 1 is placed upside down, and a support frame 6 is provided at the bottom of the battery case 2, and the sheet battery 1 is buckled upside down on the support frame 6, the sheet battery 1 is overhead by the support frame 6, and the bottom of the sheet battery 1 is provided with a leakage point 11; the leakage point 11 is the most vulnerable part of the sheet...
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Abstract
The invention provides a flame-retardant explosion-proof battery pack comprising sheet batteries with electrodes, a battery box, a battery box cover and insulating flame-retardant liquid filled in the battery box, wherein a sealing rubber gasket is arranged between the battery box and the battery box cover; an one-way pressure release valve is arranged on the battery box cover; the sheet batteries are placed upside down and a support frame is arranged at the bottom of the battery box so as to overhead the sheet batteries; the electrodes of the sheet batteries are soaked in the insulating flame-retardant liquid. By adopting the technical scheme provided by the invention, gas or electrolyte leaked out of cracked sheet batteries can be avoided being in contact with oxygen or moisture in air, so that the service life of battery pack is prolonged, and the safety performance of the battery pack is guaranteed.
Description
technical field [0001] The invention relates to a flame-retardant and explosion-proof battery pack. Background technique [0002] At present, battery-powered electric vehicles and electric buses are gradually replacing traditional cars and buses. The battery cell is the main energy storage device on the electric vehicle, and the battery box, as a device for loading the battery cell, is a key component of the electric vehicle, which directly affects the performance of the battery cell and thus affects the performance of the electric vehicle. Due to its excellent power output characteristics and long life, lithium-ion power batteries are currently widely used in electric vehicles. [0003] As the main energy storage device of electric vehicles, the power battery pack is generally formed by connecting multiple batteries in series and parallel. Due to the occurrence of some side reactions during the charging and discharging process of the battery, the side reactions will genera...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01M2/10H01M2/02H01M50/143H01M50/244H01M50/249
CPCH01M10/4235H01M2200/00H01M50/24Y02E60/10
Inventor 杨从明丁易
Owner MICROVAST POWER SYST CO LTD