Battery Cooling Air Filter – Transit Bus Industry

hybrid-bus hybrid-bus-battery-packmobile-cabin-air-hvac-systemIndustry: Commercial & Transit Vehicles
Application: Hybrid Bus Battery Pack Inlet Filter

A Tier 1 battery manufacturer required a higher performance air filter to the current filter used to filter cooling air entering a roof mounted battery pack for Hybrid transit buses. They needed a cartridge/panel style filter with the ability to quantifiably capture 85% of 0.5 micron particles with a 0.22″ pressure drop across the filter and they needed prototype samples for testing within two weeks.

APC required a $5000 retainer to cover engineering time, proto-type filter development and testing costs. Any remaining funds would be used towards filter production after filter testing and pre-production QC sample approvals.

APC manufactured two different prototype filter samples within 7 days for client testing. Based on their feedback, a third prototype filter was made to fine-tune filter efficiency, pressure drop, and operational temperature requirements. Initial filter testing and prototype filter submission was all completed within a 4 week timeframe.

The next phase required 20 prototype filters for 6 month field testing:

  • Test 1: New York City. Wintertime testing subjected the filters to sub zero temperatures, wind, snow, sleet, ice, and road salt.
  • Test 2: Arizona. Filters subjected to superfine Arizona road dust, below 0.5 micron, and high operating temperatures.
  • Test 3: California. Filters subjected to sea salt spray, heat, battery draw and stress from steep roads.

All three tests challenged the filters’ air cooling and filtration capabilities to keep battery cells clean and operating temperatures in check to maximize battery performance.

To learn more about this hybrid bus battery pack inlet filter project, or about our other products and services, please contact APC Filtration, Inc.

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Manufactured Battery Cooling Filter Specifications:

Product Description Air Inlet Filter for battery and fuel cell powered vehicles.
Filtration Efficiency Capabilities
MERV Rating ASHRAE 52.2-2007 BS EN779:2002
60 – 65%
70 – 75%
80 – 90%
90 – 95%
F6 – 60-80%
F6 – 60-80%
F7 – 80-90%
F8 – 90-95%
F9 – >95%
BS EN1822:2009 IEST RP-CC001.5 – (0.3 µm)
E10 (formerly H10)
E11 (formerly H11)
E12 (formerly H12)

Custom designed filters to meet any filtration efficiency.

Filter Frame Sizes Custom frame sizes available in any size, Radial or Panel Filter.
Frame Materials Plastic – high impact ABS, PVC, PS and custom molded or extruded profiles as required.
Metal – extruded aluminum, 22g and 24g galvanized metal, roll formed in any gauge as required.
Minimum Order Quantity (MOQ) Custom Design – 100 pcs (plus any applicable tooling)
Delivery Time Production: 3- 4 weeks
Tooling: 4 weeks
Delivery Location FOB: Manufacturing & Warehouse Locations
Brantford, Ontario Canada
Buffalo, New York, USA
Rancho Dominguez, California, USA
Port of Shanghai, China
Quality Management System ISO 9001:2015
Laboratory Testing Capabilities U shaped Duct Testing to ASHRAE 52.2 and EN779 standards.

LMS2000 the most accurate test system for HEPA and ULPA Filters.

Horizontal Duct Testing to ASHRAE 52.1 and old EN779 Standards for Dust Spot Efficiency, Arrestance and Holding Capacity.

Maximum Panel Filter size for test lab = 72″ x 24″ x 24″ deep.
Maximum Radial Filter size for test lab = 48″ diameter x 24″ deep.

Product Design & Graphic Software Capabilities Solidworks 3D Design
AutoCAD 2D
Adobe Illustrator
Other Applications for Panel Filters
Air Purifier Equipment & Appliances
Appliances, Industrial, Commercial & Domestic
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Food & Beverage Manufacturing Government Buildings
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Health Care Facilities Hospital Equipment
Hotels (Public Spaces)
Industrial Plants – Offices, Plant Air
Infection Isolation Rooms, Surgical Suites Institutional Facilities
Medical Appliances & Equipment
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Processing, Food Processing, Storage, Soiled Holding Areas
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Research Facilities
Sensitive Processes
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Train Stations, Bus Depots
University Laboratories
Wind Turbines