Cylindrical Battery Cell (High Energy) - Megamedo

Shipment

The company is the world’s best Gb/T 31484-2015 supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

The cell shall be shipped in voltage range of 3.5~ 3.8V or in accordance with customers' requirement. The remaining capacity before charging shall be changed depending on the storage time and conditions

Package

100pcs cells in a small box, 2 small boxes in a big box

Storage

Conditions Permissible time -20℃~ 60℃,   60% RH Max Less than 1 month -20℃~45℃, 60%   RH Max Less than 3 months -20℃~25℃, 60%   RH Max Less than 1 year About long time storage:If the cellneeds to bestored for a long time, the cell’s  storage voltage should be 3.5~ 3.8V. Also, it is recommended to charge the  cellevery six months.

Warranty

The Warranty period of cell is made according to business contract. However, even though the problem occurs within this period, BAK won’t replace a new cell for free as long as the problem is not due to the failure of manufacturing process or is due to customers’ abuse or misuse.

To prevent the possibility of the cell from leaking, heating, explosion, please observe the following precautions: (It should be indicated especially in manual or instruction for users.)

• 1.Do not use and leave the cell near a heat source such as fire or heater.
• 2.Do not use or leave the cell under the blazing sun (or in heated car by sunshine).
• 3.Do not use or leave the cell at very high temperature conditions (e.g., strong direct sunlight or a vehicle in extremely hot conditions). Otherwise, it can overheat or catch fire or its performance will be degenerate and its service life will be decreased.
• 4.Do not short circuit, over-charge or over-discharge the cell.
• 5.Don’t immerse the cell in water and seawater. Please put it in cool and dry environment if no using.
• 6.Don’t reverse the positive and negative terminals
• 7.Do not disassemble or modify the cell.
• 8.Do not transport or store the cell together with metal objects such as necklaces, hairpins, coins, etc.
• 9.Make sure the cell is not with conspicuous damage or deformation.
• 10.Don’t connect the cell to an electrical outlet directly.
• 11.If the cell leaks and the electrolyte splashes into the eyes, rinse the eyes with clean running water immediately for at least 15 minutes, and go to hospital for treatment if necessary.
• 12.Mixed use of cells of different types is not allowed.
• 13.Keep the cell away from babies.
• 14.Do not directly solder the cell and pierce the cell with a nail or other sharp object
• 15.Do not strike, throw or trample the cell.
• 16.Use the cell charger specifically for that purpose when charging.
• 17.Please separate cells of different electrochemical systems from one another when disposing of secondary cells.
• 18.Clean the terminals with a dry cloth before use if the cell terminals are dirty. Otherwise power failure or charge failure may occur due to the poor connection with the instrument.
• 19.Cells should be removed from the device or charger immediately and not used again if they are over heat, give off odor, discolor or deform, or appear abnormally in any way during use, charging and storage.
• 20.The cell replacement shall be done only by either cell supplier or device supplier instead of the user.
• 21.Please tape the terminals to insulate cells before discarding them in case of fire and explosion.
• 22.Do not use cells in strong electrostatic and magnetic occasions, otherwise, it can cause safety problems easily.
• 23.Use of damaged cells is not permitted.
• 24.Make sure package designing will not cause cell damages.
• 25.Cell packing should be conducted strictly according to level range, any misuse of different levels should not be permitted.
• 26.Disassembling cells from pack or module is not permitted unless under the guidance of professional technicians.

Regenerative Battery Pack Test System

Battery Charge Discharge Test Equipment

Product description:

The battery charge discharge test equipment is a professional and reliable regenerative battery pack test system, by charging and discharging battery packs such as EV batteries, HEV batteries, ESS batteries, and telecommunications system batteries, and collecting test data in real time, the battery charge discharge test equipment obtains battery electrical performance test data, which provides an accurate and reliable basis for battery quality control, R&D and application simulation.

The regenerative battery pack test system is equipped with a bidirectional AC/DC converter, which can regenerate battery discharge energy to the AC power grid, saving power and testing costs. 

Scope of application:

The battery charge discharge test equipment can be used to test the electrical performance of various types of batteries such as lithium batteries, Ni-Cd batteries, NiMH batteries, lead-acid batteries, and flow batteries, etc.

In addition, the regenerative battery pack test system can also be used to perform aging tests on various electronic loads, such as charger aging tests.

Main test items:

1. Battery pack capacity test.

2. Battery pack charge/discharge performance test.

3. Battery pack charge/discharge efficiency test.

4. Battery pack charge retention and recovery ability test.

5. Battery pack cycle life test.

6. Battery pack temperature characteristics test.

7. Battery pack DC internal resistance test.

8. Battery pack pulse charge/discharge test.

9. Battery pack working condition simulation test.

10. Battery pack over-charge and over-discharge rate affordability test.

System Topology：

Figure 1. System Topology of Regenerative Battery Pack Test System

Features: 

1. Regenerative design, using a common DC bus topology, energy conversion between DC channels can be achieved. And, battery discharge energy is preferentially regenerated between DC channels.

2. Regenerative design, if the DC channels cannot be balanced, the extra battery discharge energy will be regenerated to the AC power grid, which saves power and test costs.

3. The power control scheme of DSP&IGBT is adopted to achieve high-speed and high-precision control of electric energy.

4. The margin and timely power control algorithm ensures the stable and reliable operation of regenerative battery pack test system.

5. The output voltage range, current range, and power range can be freely set, and it is compatible with battery packs of various specifications and models.

6. AC input adopts adaptive technology and does not need to distinguish the phase sequence of the AC power grid.

7. Advanced software phase locking control technology, THD≤5%.

8. Scan the QR code to automatically bind the test process file, and scan the QR code to automatically start testing, avoiding manual errors and improving testing efficiency.

9. Supports automatic judgment of unqualified batteries to improve testing efficiency.

Technical Specifications of Regenerative Battery Pack Test System 

Product name

Battery Charge Discharge Test Equipment

Product model

WA-BTS-RJ550V500A2CH550kW

Product type

Regenerative type

Regeneration efficiency

≤94% (Full load)

Energy regeneration features

a) Battery discharge energy is preferentially regenerated between DC channels.

b) If the DC channels cannot be balanced, the extra battery discharge energy will be regenerated to the AC power grid.

AC Input Side

AC input power

Voltage: 380VAC±15%

Frequency: 50Hz±2Hz

(Customizable)

a) Three-phase five-wire power distribution system;

b) Grounding resistance ≤5Ω.

Power factor

≥99%

Full load

The Harmonic Distortion

THD≤5%

Full load

AC input protections

AC power grid under-voltage protection

 

AC power grid over-voltage protection

 

AC power grid over-current protection

Includes circuit breaker over-current protection.

AC power grid over-load protection

 

AC power grid input phase loss protection

 

AC power grid frequency exception protection

 

Transformer over-temperature protection

 

Lightning protection

 

Anti-islanding effect protection

 

DC Output Side

Output channel

No. of channels

2 channels/cabinet

Customizable

Channels used in parallel

Yes

Up to 1000A after paralleling of circuits.

Channel control mode

Independent control of each channel

 

Detection and Sampling

Four-wire measurement

 

Voltage/CH

Charge range

DC: 0V~550V

Customizable

Discharge range

DC: 550V~30V

Customizable

Accuracy

±(0.05%FS+0.05%RD)

Customizable

Resolution

0. 1mV

 

Current/CH

Range

DC: ±500A

Customizable

Accuracy

±(0.05%FS+0.05%RD)

Customizable

Resolution

0. 1mA

 

Maximum power/CH

275kW

 

Maximum power/Cabinet

550kW

 

Current rise time

≤30ms

10%~90% (Battery load)

Current switch time

≤60ms

-90%~+90% (Battery load)

Data collection interval

≤10ms

Includes current and voltage values.

DC output protections

Under-voltage protection

 

Over-voltage protection

 

Short-circuit protection

 

Over-temperature protection

 

Reverse connection protection

 

Over-current protection

 

Channel communication exception protection

Automatically disconnect output if communication exception occurs.

Power outage protection

Automatically disconnect contactor during power outage

Emergency stop protection

Includes emergency stop button.

Other Parameters

Heat dissipation

Air forced cooling

 

IP Rating

IP20

 

Sound

≤75dB

Measured from 1 meter away.

Lightning protection level

Level 2

 

AC cable lead-in method

Bottom lead-in

 

DC cable lead-out method

Bottom lead-out

Customizable

Output cable

5 m copper cable with tinned copper nose terminals

Customizable

BMS communication interface

Each channel contains one CAN communication

Each channel is configured with one 12V power supply.

Cabinet color

WinAck standard cabinet colors

Customizable

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Reference dimensions

W1840*D1100*H1900mm

Subject to actual situation.

Usage Environment Requirements

Altitude

≤1000m

 

Working temperature

- 10℃~45℃

 

Relative humidity

≤90%RH

Non-condensing

Storage temperature

-20℃~50℃

 

Installation environment

a) No strong vibration and impact;

b) No strong electromagnetic interference.

a) The intensity of external magnetic field induction shall not exceed 0.5m;

b) The vertical slope of the installation should not exceed 5%.

Usage environment

a) No explosive hazardous media;

b) Does not contain harmful substances that corrode metal and damage insulation;

c) Does not contain conductive media;

d) Mold is not allowed.

 

Software Functions of Regenerative Battery Pack Test System

 

Items

Function description

Remarks

Database type

MYSQL

 

Data storage interval

0.1S~9999S

Configurable

Nested Loop function

Max. support 5 layers

Hierarchical display of process flow.

Editable number of steps

Max. 9999

 

Number of cycles

1~9999

 

DBC file parsing function

Supports importing and editing of standard format DBC files

 

Working condition simulation function

Supports import of EXCEL working condition files

Contains current working condition files and power working condition files; time and moment are optional.

Charge mode

Constant current charge

If you have any other charge mode requirements, please consult us.

Constant voltage charge

Constant current to constant voltage charge

Constant power charge

Constant resistance charge

Power follower

Current follower

Discharge mode

Constant current discharge

If you have any other discharge mode requirements, please consult us.

Constant voltage discharge

Constant power discharge

Constant resistance discharge

Power follower

Current follower

Cut-off condition

(Jump condition or if condition)

Working step time

a) BMS data conditions require BMS to upload relevant data to be valid.

b) If you have any other cut-off condition requirements, please consult us.

Voltage

Current

Capacity (Total capacity, charging capacity, discharging capacity)

Maximum cell voltage

Minimum cell voltage

Maximum cell temperature

Cell voltage difference

Cell temperature difference

SOC

Global control conditions

Output voltage range

BMS data conditions require BMS to upload relevant data to be valid.

Current range

Power range

Cell voltage range

Cell temperature range

Cell voltage difference range

Cell temperature difference range

Unqualified battery judgment conditions

Working step capacity

It is optional to continue to the next work step or stop testing after being judged as unqualified.

Total capacity

End current

Battery voltage

Working Step energy

Battery voltage difference

Battery temperature difference

SOC

Software protections

Output limit protection

The output voltage, current and power range can be set.

BMS data anomaly protection

Including cell voltage, cell temperature, cell voltage difference, cell temperature difference, etc.

Communication abnormality protection

a) PC communication abnormality protection;

b) BMS data abnormality protection.

Abnormal power outage protection

Support work step continuation function.

Voltage over range protection

When the voltage is out of range, the work step cannot be performed.

Reverse connection protection

When the connection is reversed, the work step cannot be performed.

Data output

Support single channel data export.

 

Export data in batches.

 

Export content is optional.

 

Supports curve graph export.

 

Supports exporting after data filtering.

 

Data list content

Detailed data list

 

Cycle list

 

Work step statistics list

 

Log file

 

Test process

 

Test report

 

Curve graphics

 

Permission management

Supports three-level permission management functions of super administrator, test administrator, and test operator.

 

MES uploading function

Upload data to MES as required.

Optional

Scan code function

Scan the barcode or QR code to automatically start the test.

We can set whether to enable this function.

Supports automatic binding test process by scanning barcode or QR code.

Automatically bind the test process to the battery pack coding rules and automatically start the test.

LAN function

Supports automatic synchronization of test process files between multiple PCs in the LAN.

A separate server is required.

Supports searching test data between multiple PCs in the LAN.

Test data between different PCs can be quickly searched, and scan code search is supported.

Test result judgment

Supports automatic judgment of unqualified batteries.

Unqualified conditions can be set freely and test results are automatically generated.

DCIR test

Support

Test parameters can be set.

Support database migration

Support

 

Reference Standards:

1) GB/T 18386.1-2021 Test methods for energy consumption and range of electric vehicles—Part 1: Light-duty vehicles

2) GB/T 18386.2-2022 Test methods for energy consumption and range of electric vehicles—Part 2: Heavy-duty commercial vehicles

3) GB/T 31484-2015 Cycle life requirements and test methods for traction battery of electric vehicle

4) GB/T 31486-2015 Electrical performance requirements and test methods for traction battery of electric vehicle

5) GB 38031-2020 Electric vehicles traction battery safety requirements

6) GB/T 18385-2005 Electric vehicles Power performance Test method

7) GB/T 31467.1-2015 Lithium-ion traction battery pack and system for Electric vehicles—Part 1: Test specification for High power applications

8) GB/T 31467.2-2015 Lithium-ion traction battery pack and system for Electric vehicles—Part 2: Test specification for High energy applications 

Figure 2. Regenerative Battery Pack Test System

* Reference picture (Picture just as reference, please in kind prevail)

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