EV+Accelerating Rate Calorimeter
EV+ Accelerating Rate Calorimeter
Designed for EV cells and small modules and to fulfil requirements of US ABC & Freedom Car, SAND-2005-3123; SAE J2464 and other National and International prescribed tests
Many prescribed ‘standard’ tests call for Calorimetry and also call for use of abuse testing (eg SAND, SAE). Tests call for video monitoring, gas detection/analysis, nail penetration and crush under controlled conditions. The EV+ calorimeter from THT has been designed to accommodate many of these tests - and more whilst gaining quality information on heat release.
|The EV+ Calorimeter||Inside the THT EV+ Calorimeter|
The EV+ is an cylindrical calorimeter 40cm in diameter and 44cm depth. Unlike other THT adiabatic calorimeters the lid seals to the base unit. This seal is restricted to below 1 bar and is maintained by electromagnets. This allows for inertion of the environment and the ability to collect products of battery disintegration.
Standard Features of the EV+ calorimeter are:-
- Integrated cables for current and voltage measurement
- Video camera (with light)
- Gas collection line (leading to gas collection bag)
- Ability for battery pressure and temperature measurement
- Ability for purging, evaluation, inerting
Hardware Features & Performance
Exotherm detection sensitivity
Exotherm tracking rate
Inerting/Evacuation/Gas Purging (cooling)
Battery Connector (Current and voltage)
Gas Collection Port
Electro-magnetic Sealed Lid
Automated Electronic Cut Out
specification above subject to change
Installation & training
Sub Ambient Operation, Cryogenic Option
Heat Capacity Measurement Cp
Surface Temperature Distribution
Controlled Speed Nail Penetration
Gas Analysis Options
A full range of spares and consumables are available from our eshop arcspares.com
Low Φ containers
Designed by THT these low Φ containers are designed to enable accelerating rate calorimeter users to bridge the gap into the world of low-phi testing. These cells are available with several different fittings and can also be fitted with magnetic stir bars. Currently these containers are offered in stainless steel although other materials can be produced. Contact us for further details.
Burst Disk Unit
THT has designed this burst disk assembly, which is suitable for any
accelerating rate calorimeter. Designed to sit above the calorimeter, this device enables the user to protect the system from cell ruptures. The user can fit a number of special burst disks which are designed to rupture at specific pressures and will cause the cell to rapidly discharge. Any liquid vented will be contained within the catch pot. This system is ideally used alongside low-phi containers and glass bombs
Battery sample holders
THT manufactures holders for specific batteries to enable testing in both open and closed (with pressure connections) modes. THT are able to manufacture special holders for any battery dependent on a specified minimum order. Please contact us with your specific requirements.
Specific holders for all battery types.
2 cubic meter containment vessel (Blast Box) to allow working space; 3mm reinforced Steel, Proximity Switch, Door bolt;
Burst Disk Assembly. Automated Fume Extraction facility
Adiabatic; Quasi-Isothermal, True Isothermal, Isoperibolic, RampDetection of Endotherms and Tracking of Exotherms
Sample Testing Service
A testing service for larger battery cells is available. Tests include abuse and electro-thermal dynamics.
Abuse type testing will determine heat output when battery is shorted, overcharged or over-discharged.
Testing can also be carried out to determine Cp variation of heat release over surface area (multi-point) and aspects of thermal management.
We offer a full range of tests allowing all information on the safety, efficiency, lifetime of batteries and thermal consequences of their performance to be determined.
Click here to request sample test information