Simulation testing device for electrical conductivity of powdery electrode material

Abstract

The invention discloses a simulation testing device for the electrical conductivity of a powdery electrode material. The simulation testing device comprises an outer barrel body, an inner barrel body, a movable terminal, a cushion block, the powdery electrode material, a fixed terminal, lead wires and a tester, wherein the inner barrel body axially penetrates through the outer barrel body and two ends of the inner barrel body are exposed; one end, which is filled with the fixed terminal, of the inner barrel body is fixedly connected with the outer barrel body, and the other end, which is provided with the movable terminal, of the inner barrel body is in sleeving joint with the outer barrel body. An inner cavity of a middle section of the inner barrel body is filled with the powdery electrode material, and the movable terminal, which is mounted in the inner barrel body, is used for pushing the cushion block to compact the powdery electrode material. Stretching-out ends of the fixed terminal and the movable terminal are connected through the lead wires, and the tester is connected between the two lead wires in series to form a testing loop. The simulation testing device is used for testing the electrical conductivity under a simulation state, and an electrical conductivity relative value close to actual application is easy to obtain; the data of the electrical conductivity of the used powdery electrode material is real and reliable, so that research and development progress of novel products of batteries is facilitated.

Description

technical field [0001] The invention relates to a device for testing the conductivity of an electrode material, in particular to a device for simulating the conductivity of a powdered electrode material. Background technique [0002] With the advancement of science and technology of the times, new energy vehicles have become an important development direction of the automobile manufacturing industry in the future. Under the current technical conditions, the supporting power batteries for new energy vehicles mainly include lead-acid batteries, lead-carbon batteries or lithium batteries. The positive and negative electrodes of these three types of power batteries are all powdered electrode material products. The performance of the power battery mainly depends on the conductivity of the powdered electrode material used. In order to achieve quantitative testing, the industry generally uses the four-probe method for conductivity measurement. Before the method is tested, the powd...

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Problems solved by technology

[0003] The present invention mainly aims at the problem that the four-probe method in the prior art is not suitable for accurate measurement of powder electrodes, and proposes a simulation test device for the conductivity of powder electrode materials. The device has a simple structure, is easy to manufacture, and is convenient to operate. Similar conditions of use, accurate and reliable test results

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