{"id":21321,"date":"2025-04-15T09:44:43","date_gmt":"2025-04-15T07:44:43","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=21321"},"modified":"2026-03-18T15:44:01","modified_gmt":"2026-03-18T14:44:01","slug":"technotrans-cooling-system-for-charging-stations-with-battery-storage-systems","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/technotrans-cooling-system-for-charging-stations-with-battery-storage-systems_21321\/","title":{"rendered":"Compact power for charging stations with battery storage systems"},"content":{"rendered":"\n

E-mobility plays a crucial role in ensuring the greater sustain\u00adability of day-to-day life. However, it currently takes longer to charge an elec\u00adtric vehicle at a conven\u00adtional charging station than it does to refuel a car with a combus\u00adtion engine. The charging time also varies depending on the charging station. In smaller towns connected to the local power grid, the avail\u00adable grid capacity is often not suffi\u00adcient to allow charging in minutes. This is because the grids tend to be low-voltage. By contrast, the medium- and high-voltage grids that are often found in indus\u00adtrial areas or close to high\u00adways can be used to operate high-power charging stations that allow rapid charging in high output ranges.<\/p>\n\n\n\n

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E-Mobility: About charging stations and charging time<\/h3>\n\n\n\n

According to Statista, there was a total of 120,625 public charging stations in Germany in 2024. In terms of network infra\u00adstruc\u00adture, Germany there\u00adfore ranks second in Europe, followed by France with 119,255 charging stations and the United Kingdom with 72,924. The Nether\u00adlands currently leads the way in Europe with 144,453 charging stations.<\/p>\n\n\n\n

The charging time not only depends on the output of the charging station, but also on envi\u00adron\u00admental factors such as temper\u00ada\u00adture, the tech\u00adnical config\u00adu\u00adra\u00adtion and the elec\u00adtric vehicle\u2019s battery capacity. The higher the battery capacity, the higher the charging capacity and, of course, the range of the vehicle after charging. In prac\u00adtice, however, the onboard elec\u00adtronics of most elec\u00adtric vehi\u00adcles auto\u00admat\u00adi\u00adcally reduce the charging speed during high power charging once the battery level goes above 80 percent in order to protect key power elec\u00adtronics compo\u00adnents.<\/p>\n\n\n\n

Sources: Bundesnet\u00adza\u00adgentur, www.enercity.de, www.statista.com<\/em><\/p>\n<\/div><\/div>\n\n\n\n

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<\/figure>\n\n\n\n

Effi\u00adcient cooling for demanding elec\u00adtro\u00admo\u00adbility<\/h3>\n\n\n\n

ebm-papst offers cooling solu\u00adtions for all systems related to elec\u00adtric vehicle charging. <\/p>\n\n\n\n

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Learn more <\/i><\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

As e-mobility becomes increas\u00adingly popular, there is a general need to upgrade the local elec\u00adtricity grid so that high power charging can be provided in rural areas as well, supporting the energy infra\u00adstruc\u00adture by way of decen\u00adtral\u00adiza\u00adtion. On the one hand, this expan\u00adsion is the task of grid oper\u00ada\u00adtors. On the other hand, increasing the line voltage is not enough in itself to charge elec\u00adtric vehi\u00adcles as quickly as possible. <\/p>\n\n\n\n

For one thing, the vehicle elec\u00adtronics must also be compat\u00adible with the higher voltage, which is not yet the case for every model. However, there is now a solu\u00adtion that already works with the existing grid and the limited capac\u00adi\u00adties provided by low volt\u00adages and the current status of elec\u00adtric vehicle elec\u00adtronics: charging stations with inte\u00adgrated battery storage systems.<\/p>\n\n\n\n

Double charging thanks to battery storage systems<\/h2>\n\n\n\n

Charging stations with inte\u00adgrated battery storage systems are connected to the low-voltage grid. The batteries are charged contin\u00adu\u00adously at the existing line voltage and avail\u00adable grid capacity and store this elec\u00adtrical energy. When the charging process starts, the charging station auto\u00admat\u00adi\u00adcally combines the avail\u00adable grid output with the power stored in the battery storage system. Assuming the charging station has a maximum output of around 300 kilo\u00adwatts, it takes just a few minutes to charge a stan\u00addard elec\u00adtric vehicle suffi\u00adciently to travel more than 100 kilo\u00adme\u00adters. <\/p>\n\n\n\n

The tech\u00adno\u00adtrans cooling system cools charging stations with battery storage by means of a closed air circuit.<\/mark><\/figcaption><\/figure>\n\n\n\n

(Image | tech\u00adno\u00adtrans)<\/p>\n\n\n\n

By compar\u00adison, conven\u00adtional charging stations have an output of between 50 and 100 kilo\u00adwatts. Although the output of high power charging stations is between 100 and 350 kilo\u00adwatts, they can only be used with medium- to high-voltage grids. This is the advan\u00adtage of charging stations with inte\u00adgrated battery storage systems.<\/p>\n\n\n\n

While the car is still charging, the batteries are also being recharged (depending on the grid capacity) and will soon be ready for the next vehicle. It is impor\u00adtant that the charging station batteries do not over\u00adheat during the many charging and discharging processes because this may slow the charging process and over\u00adload the compo\u00adnents and the elec\u00adtric vehicle itself. This is exactly the right task for tech\u00adno\u00adtrans and its experts for the energy manage\u00adment and cooling of power elec\u00adtronics.<\/p>\n\n\n

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Each cooling system contains four fans from the AxiEco 200 series. (Photo | ebm-papst)<\/figcaption><\/figure>\n<\/div>\n\n\n

Air cooling is the ideal solu\u00adtion<\/h2>\n\n\n\n

tech\u00adno\u00adtrans is devel\u00adoping a cooling system for charging stations with battery storage systems. Air cooling is an ideal solu\u00adtion for these charging stations. The tech\u00adno\u00adtrans system uses a closed air circuit to cool the indi\u00advidual battery cells in the storage system. To this end, four AxiEco 200 compact fans are installed in the cooling system to circu\u00adlate the natural ambient air.  In this way, tech\u00adno\u00adtrans ensures that the batteries and power elec\u00adtronics for internal charging and simul\u00adta\u00adneous vehicle charging are cooled, thereby main\u00adtaining the high charging capacity. <\/p>\n\n\n\n

Cooling takes place via an active refrig\u00ader\u00ada\u00adtion circuit, which keeps the air temper\u00ada\u00adture for the batteries constant even in extreme ambient condi\u00adtions. One aspect is partic\u00adu\u00adlarly crucial to cooling the battery cells effi\u00adciently: a high air flow in the most compact space possible. For tech\u00adno\u00adtrans, the 500-watt motor and size of just 200 millime\u00adters were the key factors in favor of the AxiEco 200: a lot of power in a small space.<\/p>\n\n\n

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The AxiEco 200 achieves an air pres\u00adsure of up to 1280 Pascal and a maximum volume flow of up to 1820 cubic meters per hour. (Graphic | ebm-papst)<\/figcaption><\/figure>\n<\/div>\n\n\n

Perfectly adapted<\/h2>\n\n\n\n

In addi\u00adtion to the power density, the demand-based oper\u00ada\u00adtion of EC fans is also crucial. Most charging stations with battery storage systems are located in public places such as super\u00admar\u00adkets or parking lots and only operate at full output when this is neces\u00adsary. The charging stations and their batteries are exposed to fluc\u00adtu\u00adating outdoor temper\u00ada\u00adtures and adverse ambient condi\u00adtions, which may affect the charging process and the dura\u00adbility of the compo\u00adnents. However, this is not a problem thanks to the custom-manu\u00adfac\u00adtured plug connector used in the AxiEco 200. <\/p>\n\n\n\n

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\u201cThe AxiEco 200 enables the elec\u00adtronic system to selec\u00adtively control the fan speed, thus adjusting the temper\u00ada\u00adture in the battery cells for cooling as required.\u201d<\/p>\nBern\u00adhard Th\u00fcrmer, Sales Engi\u00adneer at ebm-papst<\/cite><\/blockquote>\n\n\n\n

Bern\u00adhard Th\u00fcrmer, sales engi\u00adneer at ebm-papst, says: \u201cIn addi\u00adtion to the stan\u00addard oper\u00adating connec\u00adtion, the connector is also fitted with a speed control input and a speed output signal. This enables the elec\u00adtronic system to selec\u00adtively control the fan speed, thus adjusting the temper\u00ada\u00adture in the battery cells for cooling as required.\u201d Thanks to these indi\u00advidual settings, the batteries are kept at the perfect temper\u00ada\u00adture and their output is main\u00adtained, both on hot summer days and when it is icy cold.<\/p>\n","protected":false},"excerpt":{"rendered":"

E-mobility plays a crucial role in ensuring the greater sustain\u00adability of day-to-day life. However, it currently takes longer to charge an elec\u00adtric vehicle at a conven\u00adtional charging station than it does to refuel a car with a combus\u00adtion engine. The charging time also varies depending on the charging station. In smaller towns connected to the [\u2026]<\/p>\n","protected":false},"author":36,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[16,9],"tags":[],"class_list":["post-21321","post","type-post","status-publish","format-standard","hentry","category-fans","category-refrigeration-ventilation"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/users\/36"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=21321"}],"version-history":[{"count":11,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21321\/revisions"}],"predecessor-version":[{"id":22774,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21321\/revisions\/22774"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=21321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=21321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=21321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}