CN111323710B - Test method of needle bed type battery charging and discharging equipment - Google Patents
Test method of needle bed type battery charging and discharging equipment Download PDFInfo
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- CN111323710B CN111323710B CN202010106440.0A CN202010106440A CN111323710B CN 111323710 B CN111323710 B CN 111323710B CN 202010106440 A CN202010106440 A CN 202010106440A CN 111323710 B CN111323710 B CN 111323710B
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- battery
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- needle bed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Abstract
The invention discloses a testing method of a needle bed type battery charging and discharging device, which comprises the following steps: firstly, placing two batteries in each row of battery fixing holes of a battery tray with a plurality of rows of battery fixing holes; secondly, aligning the probe needles on the needle bed of the needle bed type battery charging and discharging equipment to the battery on the battery tray, and carrying out preset charging and discharging tests on the battery for multiple times, wherein the current output to each row of probe needles is a rated current value; and thirdly, acquiring the input current of two batteries placed on each row of battery fixing holes corresponding to each row of probe needles in real time, judging whether the input current value of each battery is within the range of one sixteenth rated current +/-allowed tolerance of the battery charging and discharging equipment of the needle bed type battery, and if so, judging that the row of probe needles of the battery charging and discharging equipment is in a normal state. The invention can quickly and reliably judge whether the battery charging and discharging equipment is in a normal state, and improves the utilization rate of the battery charging and discharging equipment.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a testing method of a needle bed type battery charging and discharging device.
Background
At present, in the production process of a cylindrical lithium ion battery, daily maintenance work such as testing, calibration and the like needs to be regularly carried out on battery charging and discharging equipment, and the problems mainly include voltage and current precision detection, whether wiring errors exist in the maintenance process and the like.
In the original operation mode, for a needle bed type whole-layer battery charging and discharging device, a special test tool needs to be used for testing point by point (namely each probe needle and each probe point). The specific operation flow is as follows:
special test tool → whole layer point-by-point detection → test flow → point-by-point test → cycle check and confirmation → writing revision information → updating test data → ending the test of the needle bed of the layer.
It can be clearly seen from the above process that, in the operation process, the battery charging and discharging device performs charging and discharging tests on a single point (i.e. a probe point of a single probe pin) by using a test tool with each layer as a unit, performs point-by-point detection through feedback current and voltage information, generally, each point needs to be repeatedly detected for more than 3 times, and performs cycle test confirmation, the test time of the whole layer needs 2-3 hours, and if the middle is interrupted, the retest needs to be restarted, so that the use efficiency of the battery charging and discharging device is affected.
Meanwhile, the test frequency and period depend on the number of special test tools and corresponding matched calibration instruments, at present, the number of the special test tools and the matched calibration instruments for calibration is generally 1-2 by equipment manufacturers, and 4-6 layers of equipment calibration can be carried out at most in 1 day by considering the test time, so that the overall calibration period of a workshop site is prolonged.
Disclosure of Invention
The invention aims to provide a testing method of a neilsbed battery charging and discharging device aiming at the technical defects in the prior art.
Therefore, the invention provides a testing method of a needle bed type battery charging and discharging device, a needle plate of the needle bed type battery charging and discharging device comprises a plurality of rows of probe needles, each row of probe needles comprises sixteen probe needles, and the method comprises the following steps:
firstly, placing two batteries in each row of battery fixing holes of a battery tray with a plurality of rows of battery fixing holes; each row of battery fixing holes of the battery tray are arranged right corresponding to the detection needles on the needle plate, and each row of battery fixing holes comprises sixteen battery fixing holes;
secondly, aligning the probe needles on the needle bed of the needle bed type battery charging and discharging equipment to the battery on the battery tray, and carrying out preset charging and discharging tests on the battery for multiple times, wherein the current output to each row of probe needles is a rated current value I;
and thirdly, acquiring the input current of the two batteries placed on each row of battery fixing holes corresponding to each row of probe needles in real time through the needle bed type battery charging and discharging equipment, judging whether the input current value of each battery is within the range of one sixteenth of rated current +/-allowable tolerance of the needle bed type battery charging and discharging equipment, if so, judging that the row of probe needles of the battery charging and discharging equipment is in a normal state, otherwise, judging that the row of probe needles of the battery charging and discharging equipment is in an abnormal state, and prompting maintenance personnel to maintain.
In the first step, for the battery tray, two rows of battery fixing holes are formed into a battery unit from left to right in sequence;
in each battery unit, the batteries in the two rows of battery fixing holes are not on the same transverse line.
Wherein, in the first step, after two batteries are placed in each row of battery fixing holes with respect to a battery tray having a plurality of rows of battery fixing holes, all the batteries are arranged in the shape of letter "X" on the battery tray.
Compared with the prior art, the technical scheme provided by the invention has the advantages that the test method of the needle bed type battery charging and discharging equipment is realized, the battery charging and discharging test process is redesigned, the battery is placed on the tray, the batteries are fixedly arranged in the tray according to the preset mode and are matched with the battery charging and discharging equipment to perform the charging and discharging test for a short time, the existing special test tool can be replaced, whether the battery charging and discharging equipment is in a normal state or not can be judged quickly and reliably, and the utilization rate of the battery charging and discharging equipment is improved.
According to the invention, aiming at single-layer equipment after equipment maintenance, the rapid detection can be realized, and meanwhile, the rapid calibration function can be effectively realized by combining with the analysis of a special data system, so that the time of a calibration test flow is shortened, and the utilization rate of the equipment is improved.
Drawings
FIG. 1 is a flow chart of a testing method of a neilsbed battery charging and discharging device provided by the invention;
fig. 2 is a schematic diagram of a stacking position of a battery on a battery tray in an embodiment of a testing method of a neilsbed battery charging and discharging device provided by the invention, and a gray color block is a position where the battery is placed;
fig. 3 is a schematic diagram showing the arrangement of passage points (points where probe needles are located) on a needle bed type battery charging and discharging device.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.
Referring to fig. 1, the present invention provides a testing method for a needle bed type battery charging and discharging device, a needle plate of the needle bed type battery charging and discharging device includes a plurality of rows of probe needles, each row of probe needles includes sixteen probe needles, the method includes the following steps:
firstly, placing two batteries in each row of battery fixing holes of a battery tray with a plurality of rows of battery fixing holes; each row of battery fixing holes of the battery tray are arranged right corresponding to the detection needles on the needle plate, and each row of battery fixing holes comprises sixteen battery fixing holes;
secondly, aligning the probe needles on the needle bed of the needle bed type battery charging and discharging equipment to the battery on the battery tray, and carrying out preset charging and discharging tests on the battery for multiple times, wherein the current output to each row of probe needles is a rated current value I;
it should be noted that, if the probe pins are not connected in a wrong manner, the output current of each probe pin should be one sixteenth of the rated current value;
and thirdly, acquiring the input current of the two batteries placed on each row of battery fixing holes corresponding to each row of probe needles in real time through the needle bed type battery charging and discharging equipment, judging whether the input current value of each battery is within the range of one sixteenth of rated current +/-allowable tolerance of the needle bed type battery charging and discharging equipment, if so, judging that the row of probe needles of the battery charging and discharging equipment is in a normal state (for example, no wrong connection is formed), otherwise, judging that the row of probe needles of the battery charging and discharging equipment is in an abnormal state, and prompting maintenance personnel to maintain.
In the first step, in the concrete implementation, for the battery tray, two rows of battery fixing holes are formed into a battery unit from left to right in sequence;
in each battery unit, batteries in two rows of battery fixing holes are not on the same transverse line, so that the batteries are guaranteed to be distributed differently.
In the present invention, in the first step, specifically, in the implementation, for a battery tray having a plurality of rows of battery fixing holes, after two batteries are placed in each row of battery fixing holes, all the batteries are arranged on the battery tray in the shape of letter "X".
In the present invention, the needle bed type battery charging and discharging device is a needle bed formation charging and discharging device suitable for 18650 cylindrical batteries, for example, a 3A/5A formation device manufactured by hangke, skyscraper and other manufacturers can be used for initial activation of the battery and testing the capacity of the battery.
It should be noted that, for the invention, the above-mentioned shortcomings in the production field are overcome, the calibration test flow and method of the battery charging and discharging equipment are redesigned, the collection and analysis of the key step data are added, and the rapid detection of the single-layer equipment after the equipment maintenance can be effectively realized by combining the analysis of the special data system on the existing needle bed type battery charging and discharging equipment. The test result of the row of channel points is represented by comparing two channel points (namely the position points of the probe needles) of each row in the charge and discharge needle bed. The voltage and the current of the corresponding channel can be quickly inquired through the display interface of the display, and meanwhile, the state of the equipment can be accurately confirmed according to the position display information of the battery in the tray.
It should be noted that, for the present invention, by redesigning the calibration test flow and method of the battery charging and discharging device, adding the collection and analysis of the key step data, and combining with the analysis of the dedicated data system, the present invention can effectively realize the rapid detection of the single-layer device after the device maintenance.
At present, an upper needle plate and a lower needle plate of a needle bed type battery charging and discharging device are vertically and sequentially arranged according to a Y axis on the arrangement sequence of channels, each row of 16 channel points (one probe needle forms one channel point) form a control unit with 32 channels by taking two rows as a unit, 8 control units on each layer are 256 channels in total, as shown in fig. 3, and the 1 st and 2 nd columns are control units 1; columns 3, 4 are control units 2, and so on until columns 15, 16 are control units 8.
In the invention, the working principle of needle bed type battery charging and discharging equipment is considered, each layer of power supply outputs current to 8 control units through an MCU control chip on the equipment and detects loop voltage for control, each control unit correspondingly inputs the current into 2 corresponding rows of channel points (probe pins), and 16 channel points (probe pins) in each row theoretically share the input current of 1/16. For 2 rows of channel points (probe needles) in each control unit, if a wiring error occurs, the voltage and current information corresponding to the channel is '0' or the corresponding voltage and current values will appear on the wrongly connected channel, so that the abnormal points can be immediately identified easily through the shape arrangement of 'X' on the display interface of the needle bed type battery charging and discharging equipment, and the abnormal points can be conveniently found in time.
Aiming at the control units of every two adjacent columns, through a transmission test process and data acquisition and analysis, whether the final values of the current input from the MCU control chip distributed to different control units and different channel points (probe needles) in the same column meet the range of 1/16 rated values +/-equipment allowable tolerance can be immediately identified, and the equipment state under the conditions of maintenance, starting after long-term shutdown and the like can be effectively judged.
In the invention, the specific implementation process is as follows:
firstly, a test tool is replaced by a mode of placing batteries on a battery tray, and referring to fig. 2, the batteries are fixedly arranged in the tray according to a letter 'X' mode, so that each column in the tray is ensured to have 2 batteries, and meanwhile, the distribution of each column of batteries corresponding to two adjacent columns in each control unit is ensured to be different.
And then, editing the charge-discharge cycle for 2-3 times, wherein the voltage, the current and the time of each charge-discharge can be adjusted according to different equipment requirements, so as to replace a point-by-point repeated long-time calibration test carried out by a matched test tool during conventional equipment calibration.
Through above mode, the current charge-discharge test flow of cooperation carries out the test of short time through needle bed formula battery charging and discharging equipment, to the individual layer equipment after the equipment maintenance, can realize short-term test, combines the special data system on the needle bed formula battery charging and discharging equipment simultaneously, and the analysis can effectively realize quick calibration function, shortens calibration test flow time, has improved equipment utilization simultaneously.
In summary, compared with the prior art, according to the testing method of the needle bed type battery charging and discharging device provided by the invention, by redesigning the battery charging and discharging testing process and using the manner of placing the battery on the tray, the battery can be fixedly arranged in the tray according to the preset manner, and the charging and discharging test can be carried out for a short time by matching with the battery charging and discharging device, so that the existing special testing tool can be replaced, whether the battery charging and discharging device is in a normal state can be rapidly and reliably judged, and the utilization rate of the battery charging and discharging device is improved.
According to the invention, aiming at single-layer equipment after equipment maintenance, the rapid detection can be realized, and meanwhile, the rapid calibration function can be effectively realized by combining with the analysis of a special data system, so that the time of a calibration test flow is shortened, and the utilization rate of the equipment is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A test method for needle bed type battery charging and discharging equipment is characterized in that a needle plate of the needle bed type battery charging and discharging equipment comprises a plurality of rows of probe needles, each row of probe needles comprises sixteen probe needles, and the method comprises the following steps:
firstly, placing two batteries in each row of battery fixing holes of a battery tray with a plurality of rows of battery fixing holes; each row of battery fixing holes of the battery tray are arranged right corresponding to the detection needles on the needle plate, and each row of battery fixing holes comprises sixteen battery fixing holes;
secondly, aligning the probe needles on the needle bed of the needle bed type battery charging and discharging equipment to the battery on the battery tray, and carrying out preset charging and discharging tests on the battery for multiple times, wherein the current output to each row of probe needles is a rated current value I;
thirdly, acquiring the input current of two batteries placed on each row of battery fixing holes corresponding to each row of probe needles in real time through the needle bed type battery charging and discharging equipment, judging whether the input current value of each battery is within the range of one sixteenth of rated current +/-allowable tolerance of the needle bed type battery charging and discharging equipment, if so, judging that the row of probe needles of the battery charging and discharging equipment is in a normal state, otherwise, judging that the row of probe needles of the battery charging and discharging equipment is in an abnormal state, and prompting maintenance personnel to maintain;
in the first step, for a battery tray having a plurality of rows of battery fixing holes, after two batteries are placed in each row of battery fixing holes, all the batteries are arranged on the battery tray in the shape of letter "X".
2. The method of claim 1, wherein in the first step, a battery unit is formed by two rows of battery fixing holes in sequence from left to right with respect to the battery tray;
in each battery unit, the batteries in the two rows of battery fixing holes are not on the same transverse line.
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| CN202010106440.0A CN111323710B (en) | 2020-02-21 | 2020-02-21 | Test method of needle bed type battery charging and discharging equipment |
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| CN202010106440.0A CN111323710B (en) | 2020-02-21 | 2020-02-21 | Test method of needle bed type battery charging and discharging equipment |
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| CN111323710B true CN111323710B (en) | 2022-05-10 |
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Effective date of registration: 20230202 Address after: 300457 No. 38, Haitai South Road, Binhai high tech Industrial Development Zone (outer ring), Binhai New Area, Tianjin Patentee after: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. Patentee after: Tianjin Juyuan New Energy Technology Co.,Ltd. Address before: No.38, South Haitai Road, Binhai high tech Industrial Development Zone, Binhai New Area, Tianjin Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. |