A battery pack system, a battery pack airtightness detection method, and an electric vehicle
An air-tightness detection and electric vehicle technology, applied in batteries, liquid/vacuum measurement for liquid-tightness, electrical components, etc. The effect of reducing the cost involved and reducing the maintenance time
Active Publication Date: 2021-07-20
BEIJING ELECTRIC VEHICLE
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Problems solved by technology
[0006] The invention provides a battery pack system, a battery pack airtightness detection method and an electric vehicle to solve the problem that the battery pack cannot detect the airtightness at any time in the prior art
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[0036] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0037] Such as Figure 1-3 As shown, the embodiment of the present invention provides a battery pack system, the battery pack system includes:
[0038] The battery pack box 11, the battery pack box 11 is provided with an explosion-proof valve 12;
[0039] The battery pack body, the pressure detection module 13, the air extraction module 14 and the sealing module 15 arranged in the battery pack case 11, the air extraction module 14 includes an ...
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The invention provides a battery pack system, a method for detecting the air tightness of the battery pack and an electric vehicle. The battery pack system includes: a battery pack box body, an explosion-proof valve is arranged on the battery pack box body; package body, pressure detection module, air extraction module and sealing module; the air extraction module includes an air inlet and an air outlet, wherein the air outlet is connected to the explosion-proof valve, and the sealing module is arranged between the air outlet and the explosion-proof valve, including the communication between the explosion-proof valve and the explosion-proof valve. The first state of the gas outlet and the second state of closing the explosion-proof valve and the gas outlet; a controller electrically connected to the pressure detection module, the air extraction module and the sealing module, and the controller controls the sealing module between the first state and the second state switch between, and control the startup and shutdown of the pumping module, and monitor the pressure value in the battery pack box through the pressure detection module. The battery pack system provided by the invention can detect the airtightness of the battery pack at any time, and the process is simple and convenient.
Description
technical field [0001] The invention relates to the field of battery pack air tightness, in particular to a battery pack system, a battery pack air tightness detection method and an electric vehicle. Background technique [0002] The battery pack provides the energy required for driving the electric vehicle and is a particularly important component in the power system of the electric vehicle. Usually, in order to ensure the safety of the battery pack, it is necessary to test the sealing of the battery, so as to effectively avoid the risk of water entering the battery pack. [0003] Usually, the airtightness test is a conventional method for testing the airtightness of the battery pack. By injecting air into the battery pack and detecting its pressure change, the airtightness status of the battery pack can be known. [0004] At present, the airtightness detection device of the battery pack usually detects the airtightness of the battery pack under the condition that the inte...
Claims
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IPC IPC(8): H01M10/48G01M3/26
CPCG01M3/26H01M10/48H01M2220/20Y02E60/10
Inventor 刘凤月田雄威李宁盛军
Owner BEIJING ELECTRIC VEHICLE