Neware Battery tester

Download Brouchure Multi Range mA to Amp Battery Testing System, characterized with 0.01% FS accuracy and down to μA capability, enables users to perform DCIR tests, dQ/dV and other basic tests. It mainly focuses on battery research & development institutions and universities.

Model		CT-4008-5V10mA
Voltage		AC 220V ±10%, 50Hz
Resolution		AD: 16bit  DA: 16bit
Input Resistance		≥1 GΩ
Input Power		25W
Voltage	Constant Voltage Range	25mV-5V
	Discharge Min Voltage	-5V
	Accuracy	± 0.05% of FS
	Stability	± 0.05% of FS
Current	Per Channel Current Range	Range 1: 5uA-1mA, Range 2: 1mA-5mA, Range 3: 5mA-10mA
	Accuracy	± 0.05% of FS
	Constant voltage cutoff current	Range 1: 2uA, Range 2: 0.01mA, Range: 0.02mA
	Stability	± 0.05% of FS
Power	Per Channel Output Power	0.05W
	Stability	± 0.1% of FS
Time	Current Response Time	<500us (10%FS-90%FS)
	Step Time Range	≤(365*24 )hour/step, Time Form Support 00 : 00 : 00 : 00 (h min s ms)
Data Recording	Record Condition	Minimum Time Interval: 100ms
		Minimum Voltage Interval: 10mV
		Minimum Current Interval Range 1: 2uA, Range 2: 0.01mA, Range 3: 0.02mA
	Record Frequency	10Hz
Charge	Charge Mode	Constant Current Charge, Constant Voltage Charge, Constant Current and Constant Voltage Charge, CPC
	End Conditon	Voltage, current, relative time, capacity, -△V
Discharge	Discharge Mode	CCD, CPD, CRD, CVD, Constant Current and Constant Voltage Discharge
	End Condition	Voltage, Current, Relative Time, Capacity, -△V
Pulse	Charge	CCC, CPC
	Discharge	CCD, CPC
	Min Pulse Width	500ms
	Pulse number	A single pulse step supports 32 different pulses
	Automated Switch	Automated swith from charge to discharge for each pulse
	End Condition	Voltage, Test Time
Cycle	Loop Measure Range	1~65535 times
	Max Steps Per Loop	254
	Nested Loop	Nested loop Function, Max Support 3 Layers
Protection	Software Protection	Power-down Data Protection
		Off-line Testing Function
		Setting Protection Condition, Setting Parameter: Low Voltage limit, Upper Voltage limit, Low Current limit, Upper Current limit, Delay Time
	Hardware Protection	Additional Anti-reverse Protection Model
Channel Features		Constant Current Source and Constant Voltage Source with Independent pairs of Closed-loop Structure
Channel Control Mode		Independent Control
DCIR testing		Support
Voltage and Current Testing Sample		4-wire connecting
Noise		<45dB
Database		MySQL Database
A Means of Communication of Upper Machine		TCP/IP Protocol
Data Output		EXCEL、TXT、Graph
Communication Interface		Ethernet Port
Per Unit Main Channels No.		8
Dimensions		483*310*48(mm)

* Specification available: 5V1mA, 5V5mA, 5V10mA, 5V3A, 5V6A, 5V10A and so on Lithium ion Coin Cell Lab Line Equipment for Battery R&D Coin Cell Lab R&D Process - Material preparation （1）Material baking The first is to confirm and bake the battery material. Generally, the battery conductive agent needs to be baked at 120℃ for 8 hours. The PVDF powder should be baked at 80℃ for 8 hours. The cathode active material (LFP, NCM, etc.) depends on the state and process of incoming material whether it needs to be baked and dried. The anode of lithium battery is composed of anode active materials, conductive agent, battery binder and dispersant. The conventional anode electrode system is a water mixing process (the solvent is deionized water), so the incoming material does not require drying. This process requires: Conductivity of deionized water ≤1us/cm. Workshop temperature ≤40℃, Humidity :≤25%RH. （2）Battery Slurry mixing Cathode material mixing About cathode active material mixing. We need to pay attention to the feeding sequence (add cathode active material and conductive agent slowly mix, then add binder), feeding time, feeding ratio, to strictly according to the process. Secondly, it is necessary to strictly control the rotation and rotation speed of equipment, vacuum degree and temperature of stirring. The slurry needs to be filtered when it is turned out, the purpose of filtration is to filter large particles, precipitation and removal of ferromagnetism and other substances. The influence of large particles coating to the final may lead to the battery from the risk of large or short circuit; The size of the ferromagnetic material too high will lead to the battery self-discharge too large and so on. Anode material mixing The anode of lithium battery is composed of anode active materials, conductive agent, battery binder and dispersant. The conventional anode electrode system is a water mixing process (the solvent is deionized water), so the incoming material does not require drying.  After confirmation of the material, prepare glue solution (CMC powder and water composition) first. Pour the graphite powder and conductive agent(Carbon black, CNTs, Graphene, etc.) into the battery slurry mixer for dry mixing.  Finally, pour the SBR binder into the mixer. It is recommended to stir quickly within a short time . The final viscosity (2000 ~ 4000 mPa. S), particle size (35um≤), solid content (40-70%), vacuum sifting (≤100 mesh). The specific process value needs to be different according to material properties, mixing process and so on. 2. Electrode coating The cathode electrode coating is the cathode slurry extrusion coating or spraying on the cathode current collector aluminum foil, the density of one side is 20 to 40 mg/cm2. Anode electrode coating is the anode slurry extrusion coating or spraying on the anode current collector copper foil. 3.Electrode drying The drying of pole piece generally needs to consider 3 points, baking temperature, baking time and baking environment. The baking temperature of NMP needs to be above 100℃. Under the premise of drying, the baking temperature should be reduced as far as possible and the baking time should be increased. For some materials that are easily oxidized or unstable in high temperature air, they need to be baked in an inert atmosphere oven. Drying conditions can also be determined by directly measuring the moisture content of the electrode. 4. Rolling press After coating, the dry composite material coating is relatively loose. If used directly, it is easy to fall off and damage after being infiltrated by electrolyte. Roller machine can be used for tablet pressing. Generally, the positive electrode coating can be pressed to 15~60 μm. The stability, fastness and electrochemical properties of the electrode were improved after the tablet was pressed, and the test performance was better than that of the sample without press. 5. Disc cutting （electrode and separator） The prepared electrode piece is put on the punching machine and rushed out of the small electrode. The diameter of the small electrode can be adjusted according to the size of the punching die of the punching machine. The finished electrode needs to be selected. Try to select the electrode with no burr, no powder dropping, and smooth surface and edge. 6.Electrode and separator drying Put the electrode into a vacuum drying oven, vacuum to 0.1MPa, set the drying temperature and time, can be baked at 120℃ for 6 hours, the purpose of this step is to further remove the moisture in the electrode. 7.Coin cell assembly Transfer the prepared electrodes to an inert atmosphere glove box and prepare the coin cell assembly components: anode case, lithium metal plate, battery separator, gasket, spring plate (nickel foam), cathode case, electrolyte, in addition to the crimper, pipette and insulating tweezers. 8. Coin cell crimping Place the anode side of the coin cell up on the coin cell crimper. Paper towels can be used to absorb the spilled electrolyte. Then crimping the battery, complete assembly and prepare the coin cell, take it out with insulating tweezers, observe whether the appearance of the preparation is complete and wipe clean with paper towels. 9.Tester After completing the above steps, we can use the battery tester to start measuring the coin cell we have prepared.  For further information https://en.neware.com.cn/