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Device and method for simulating full sea depth pressure battery performance test

A technology for testing device and battery performance, which is applied in the direction of measuring device, measuring electricity, measuring electric variables, etc., and can solve the problems that lithium iron phosphate batteries have never been tested.

Active Publication Date: 2019-12-31
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on battery test equipment and test methods in deep sea environment is basically blank at home and abroad, and the relevant test of lithium iron phosphate battery in a water depth of 10,000 meters has never been carried out.

Method used

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  • Device and method for simulating full sea depth pressure battery performance test
  • Device and method for simulating full sea depth pressure battery performance test
  • Device and method for simulating full sea depth pressure battery performance test

Examples

Experimental program
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Embodiment Construction

[0024] The experimental equipment in this example uses power battery testing equipment, a milliohm meter, a 100MPa pressure test barrel, and a manual booster pump; the test object is a 3AH lithium iron phosphate soft pack battery; the test temperature is 20°C and 3°C; the test pressure is 0.1MPa -100Mpa.

[0025] The structure of this device is as figure 1 As shown: the cast iron pressure vessel 7 and the pressurizing mechanism 16 are connected with a high-pressure pipeline through a valve 8 and a pressurized pipeline interface 9 . The test battery tab 12 is connected with the circuit plug 10 and the sealing socket 5 on the top of the cast iron pressure vessel through bolts 13, and the plug 10 is connected with the battery test platform 2 through wires. The thermocouple 4 is arranged on the surface of the cast iron pressure vessel and connected with the auxiliary channel 3 . The battery test platform communicates with the host computer by connecting the auxiliary channel.

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Abstract

The invention relates to a device and method for simulating a full-ocean-depth pressure battery performance. The device is composed of an iron-casting pressure container, a pressurizing mechanism, a to-be-tested soft lithium iron phosphate battery arranged inside the iron-casting pressure container, an insulating medium and a sensing mechanism. The iron-casting pressure container includes a pressure tank with a pressure gauge and pressure relief valve; and a circuit plugging port, the pressure gauge, and a pressurized pipe plugging port are arranged on the top of the iron-casting pressure container with the 140-MPa pressure-resistant performance. Therefore, a full-ocean-depth environment with the 100-MPa pressure and low temperature can be simulated; the lithium iron phosphate battery withpoor stability can be pressurized to be at the voltage of 100MPa; and the changing situation of electrical parameters of the bathyscaphe battery with depth changes is tested.

Description

technical field [0001] The invention relates to a technology in the field of battery testing, in particular to a device and method for testing the performance of a soft-packed lithium iron phosphate battery under a pressure of 100 MPa simulating the full sea depth. Background technique [0002] In order to improve the battery life of the deep submersible, the current development trend is not to place the lithium-ion battery pack in a heavy pressure-resistant container, but to arrange the lithium-ion battery pack in a lighter oil-filled pressure compensation box. This causes the temperature and pressure of the working environment of the battery pack to change drastically with the depth of the dive, which has a strong impact on the electrical characteristics of the battery. The research on the electrical characteristics of the battery provides the basis and necessary conditions for the establishment of the battery management system, and is of great significance to ensure the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/396G01R31/385G01R31/00
Inventor 陈自强周诗尧郑昌文黄德扬刘健
Owner SHANGHAI JIAOTONG UNIV
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