DH-DL5000ABattery short-circuit testing machine

Product Overview:

1The remote control high current short-circuit device is designed to meet the requirements of multiple battery short-circuit test standards, namely GB/IEC/EN/UN38.3/

UL/QC/T 743-2006 "Lithium ion Batteries for Electric Vehicles" and GB/T 31467.3-2015Lithium ion power for electric vehicles

Battery Pack and System3 Part: Safety Requirements and Testing MethodsMajor Project of Energy Conservation and New Energy Vehicles under the 863 Program

eyeStandard specifications for performance testing of lithium-ion power batteries for electric vehicles in 2008; According to the standard requirements, the short-circuit device must comply with the internal requirements

Range of obstruction≤ 20m Ω or (5m Ω), in order to obtain the required maximum short-circuit current for the test.

2. Equipment design description:This device is designed to meet the requirements of various battery short-circuit test standards, and the short-circuit device must comply with the internal resistance range according to the standard requirements≤ 20m Ω or (5m Ω) to obtain the required maximum short-circuit current for the test; In addition, the circuit design of the short-circuit device must also be able to withstand the impact of high current. Therefore, we have selected industrial grade DC electromagnetic contactors, all copper terminals, and internal copper plates for guidance. The wide and thick copper plates effectively improve the heat dissipation effect, making the high current short-circuit device safer, effectively reducing the loss of testing equipment, and ensuring the accuracy of test data.

3 Control modes:The PLC human-machine interface control method is adopted, with the contactor of the People's Electrical Appliances as the switching element. The testing conditions are set on the PLC interface, and the contactor is closed and emits a strong short-circuit current to short-circuit the entire circuit, achieving the required current for the test. During the equipment process, the circuit resistance (i.e. contactor resistance+connection terminal wiring+battery fixture, all three are less than 20m Ω or 5m Ω). The maximum short-circuit current emitted by the contactor is 5000A, and the maximum short-circuit current that the test circuit can withstand is 5000A. The battery surface temperature, voltage change data, and current change data during the testing process are detected by the acquisition components and fed back to the PLC main control program.

4. Detailed description of testing methods：

GB/T 31467.3-2015Lithium ion power battery packs and systems for electric vehicles3 Part: Safety Requirements and Testing Methods

Short circuit protection

The test object is the battery system.

All control systems of the test object are in working condition during the test.

Short circuit the terminals of the test object for 10 minutes.

The short-circuit resistance shall not exceed 20m Ω, as mutually agreed upon by both parties. Observe for 2 hours.

Requirement: The protective device is functioning and the battery system is leak free The shell has ruptured Phenomena such as fire or explosion. The insulation resistance after the test shall not be less than 100 Ω/v.

GB/T 31485-2015Safety Requirements and Test Methods for Power Batteries Used in Electric Vehicles

short circuitThe external short circuit of the battery module lasts for 10 minutesThe external circuit resistance should be less than20m Ω, observe for 1 hour.

5. Meet the standards:

QC/T 743-2006《Lithium ion batteries for electric vehicles

QC/T 744-2006《Metal hydride nickel battery for electric vehicles

GB/T 31467.3-2015Lithium ion power battery packs and systems for electric vehicles3 Part: Safety Requirements and Testing Methods

GB/T 31485-2015Safety Requirements and Test Methods for Power Batteries Used in Electric Vehicles

GB 31241-2014《 Safety requirements for lithium-ion batteries and battery packs used in portable electronic products

GB/T 18287-2013 General specification for lithium-ion batteries for cellular phones

GB/T 8897.4-2008 "Primary batteries - Part 4: Safety requirements for lithium batteries"

YD/T 2344.1-2011 "Lithium iron phosphate battery packs for communication - Part 1: Integrated batteries"

GB/T 21966-2008 "Safety Requirements for Lithium Primary and Secondary Batteries during Transportation"

MT/T 1051-2007 "Lithium ion batteries for mining lamps"

YD 1268-2003 "Safety Requirements and Test Methods for Lithium Batteries and Chargers in Mobile Communication Handheld Devices"

GB/T 19521.11-2005 "Safety Specification for Inspection of Dangerous Characteristics of Lithium Battery Pack Dangerous Goods"

YDB 032-2009 "Backup Lithium ion Battery Pack for Communication"

UL 1642:2012 "Lithium Battery Standard"

UL 2054: 2012 "Household and Commercial Battery Pack"

UN38.3 (2012) Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria, Part 3

IEC62133-2012 "Safety requirements for batteries and battery packs containing alkaline or non acidic electrolytes"

IEC 62281: 2004 "Safety requirements for lithium primary and secondary batteries during transportation"

IEC 60086: 2007 "Primary batteries - Part 4: Safety requirements for lithium batteries"

6. Overview of Equipment Features:

1. Control system:

Characteristics of Control SystemPLC touch human-machine interface, simple and intuitive operation.

Record the surface temperature, current, and voltage of the battery throughout the entire process.

Automatic control of the experimental process.

2. Characteristics of box structure:

Equipment material：Inner box made of 1.5mm SUS # 201 stainless steel,

Outer box: 2.0mm cold-rolled steel plate treated with baking paint

Smoke exhaust and ventilation function:Open the air inlet on the left side of the device and the exhaust outlet on the top. The exhaust gas generated during the testing process can be discharged outdoors through the top blower and reserved exhaust duct

Safety and explosion-proof function:The observation window is made of three-layer tempered glass, and explosion-proof wire mesh is added in the glass window

The test box structure is divided into an inner layer, an outer layer, and a middle interlayer

The test box door is made of all stainless steel high-strength hinges, which are safe and reliable.

3. Introduction to Electrical Accessories

Characteristics of contactors:Remote connection and disconnection of DC working voltage up to 660V

Rated working current 5000A DC, equipped with a series magnetic blowing longitudinal partition ceramic arc extinguishing hood arc extinguishing system

The electromagnetic system and the main contact arc extinguishing system are respectively fixed on the installation chassis, using a angular rotating snap on electromagnetic system and a double winding attraction coil, with edge pressing devices installed on the rotating edges;

The main contact is made of purple copper. Low contact resistance and fast response speed of the contacts

The contactor operates reliably, safely, has a long lifespan, and is easy to maintain and repair

Remote control:Long distance wireless control;

Reliable and stable work, with self-locking and interlocking functions, strong anti-interference ability, and long service life

Voltage acquisition and measurement:Measurement voltage: 0-100V, ensuring test accuracy

Display accuracy: F.S ± 0.2% rdg ± 1digit

Action mode: 2-fold integration mode

Collection frequency: 2 times/second

Current collection and measurement: 0-1000A

Display accuracy: F.S ± 0.2% rdg ± 1digit

Action mode: 2-fold integration mode

Collection frequency: 2 times/second

Temperature collection and measurement: -10～ 500℃

Temperature sensors: K-type thermocouple and PT 100

Collection frequency: 50MS/time

7. Product specifications and parameters:

8. List of basic components of the product: