Method for testing needle bed type battery charging and discharging equipment

Abstract

The invention discloses a method for testing needle bed type battery charging and discharging equipment. The method comprises the following steps: 1, for a battery tray with a plurality of columns ofbattery fixing holes, placing two batteries in each column of battery fixing holes; 2, aligning probe needles on a needle bed of the needle bed type battery charging and discharging equipment with thebatteries on the battery tray, performing multiple preset charging and discharging tests on the batteries, and the current output to each column of probe needles being the rated current value; 3, acquiring the input current of two batteries placed on each column of battery fixing holes corresponding to each column of probe pins in real time, and judging whether the input current value of each battery is in a range of 1 / 16 rated current + / - tolerance allowed by the needle bed type battery charging and discharging equipment, and if so, judging that the row of probes of the battery charging anddischarging equipment is in a normal state. Whether the battery charging and discharging equipment is in a normal state or not can be quickly and reliably judged, and the utilization rate of the battery charging and discharging equipment is increased.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a test method for a bed of needles battery charging and discharging device. Background technique [0002] At present, in the production process of cylindrical lithium-ion batteries, daily maintenance work such as testing and calibration of battery charging and discharging equipment is required on a regular basis, mainly including voltage and current accuracy testing, and whether there are problems such as wiring errors during maintenance. [0003] In the original operation mode, for bed-of-needles full-layer battery charging and discharging equipment, it is necessary to use a special test tool to test point by point (that is, each probe pin, each probe point). The specific operation process is as follows: [0004] Special test tooling→point-by-point inspection of the whole layer→test process→point-by-point test→circular verification confirmation→write revision info...

AI Technical Summary

Problems solved by technology

[0005] It can be clearly seen from the above process that during this operation, the battery charging and discharging equipment will use each layer as a unit to perform charging and discharging tests on a single point (that is, the detection point of a single probe pin) using a test tool, through feedback current, The voltage information is detected point by point. Generally, each point needs to be repeatedly detected more than 3 times, and the cycle test is confirmed. The test time of the whole layer takes 2 to 3 hours, and if it is interrupted in the middle, it needs to be restarted and retested, thus affecting Efficiency of battery charging and discharging equipment

[0006] At the same time, the test frequency and cycle depend on the number of special test tooling and corresponding calibration instruments. At present, equipment manufacturers generally use 1 to 2 sets of calibration special tooling and supporting calibration instruments. Considering the test time, a maximum of 4 tests can be performed in one day. ~6 layers of device calibration, thus resulting in an extended overall calibration cycle on the shop floor

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