High-speed vehicle stays cool thanks to BASF plastics

Battery cooling High-speed vehicle stays cool thanks to BASF plastics

2024-04-19 Source: BASF | Translated by AI 2 min Reading Time

Related Vendor

BASF, an expert in the field of plastics, has supported the RML Group in the development of an innovative, immersion-cooled battery for a high-speed hybrid car ...

Through two Ultramid plastics, BASF has supported the RML Group in the development of an innovative, efficient, immersion-cooled battery for a high-speed hybrid car. Ultramid B3EG7 is used for the stable housing material and the battery unit itself.(Image: RML Group) — Through two Ultramid plastics, BASF has supported the RML Group in the development of an innovative, efficient, immersion-cooled battery for a high-speed hybrid car. Ultramid B3EG7 is used for the stable housing material and the battery unit itself.
(Image: RML Group)

The battery of the RML Group, cooled with the novel immersion cooling technology, is considered powerful and safe. It has a voltage of 800 volts and a capacity of 4.2 kilowatt-hours. It weighs only 75 kilograms and the discharge rate is greater than 100 Coulombs. The extremely high-power output, especially during vigorous acceleration or rapid charging, requires a correspondingly efficient cooling system. According to BASF, immersion cooling is recommended to avoid extreme temperatures and ensure a more homogeneous temperature distribution as it greatly improves the efficiency and lifespan of the entire battery system. Two BASF plastics are used in the RML battery unit. In one case, Ultramid B3EG7 (polyamide-6-GF35) serves as both the housing material for the battery unit itself and is installed in the housing of the electrical components of the battery control. Also on board is Ultramid A3EG6 (polyamide-66-GF30), which is used for the individual battery cell holder in the battery case.

Ultramid B3EG7 is, as mentioned, used for the stable housing material and the battery unit itself. In addition, Ultramid A3EG6 EQ, a particularly pure material, is used in the individual battery cell holders.
(Image:RML Group)

The right plastics for battery applications

The two Ultramid EQ types (EQ = Electronic Quality) are described by BASF as extremely pure. This means they contain hardly any electrically active or corrosion-enhancing ingredients, yet they still offer very good heat-ageing resistance. The material minimises any type of diffusion out of the material when in contact with dielectric fluid. Dielectric fluids serve, among other things, as electrical insulation and as a coolant in high-voltage applications. Contamination by contact materials must therefore be avoided at all costs. In addition to materials, BASF also offers comprehensive services such as component simulation. With Ultrasim, for example, components can be specifically developed for specific requirements to create highly stressable, efficient, and lightweight components according to individual customer needs.

Subscribe to the newsletter now

Don't Miss out on Our Best Content

Business E-mail

Please enter a valid mailadress.

By clicking on „Subscribe to Newsletter“ I agree to the processing and use of my data according to the consent form (please expand for details) and accept the Terms of Use. For more information, please see our Privacy Policy. The consent declaration relates, among other things, to the sending of editorial newsletters by email and to data matching for marketing purposes with selected advertising partners (e.g., LinkedIn, Google, Meta)

Date: 08.12.2025

Naturally, we always handle your personal data responsibly. Any personal data we receive from you is processed in accordance with applicable data protection legislation. For detailed information please see our privacy policy.

Consent to the use of data for promotional purposes

I hereby consent to Vogel Communications Group GmbH & Co. KG, Max-Planck-Str. 7-9, 97082 Würzburg including any affiliated companies according to §§ 15 et seq. AktG (hereafter: Vogel Communications Group) using my e-mail address to send editorial newsletters. A list of all affiliated companies can be found here

Newsletter content may include all products and services of any companies mentioned above, including for example specialist journals and books, events and fairs as well as event-related products and services, print and digital media offers and services such as additional (editorial) newsletters, raffles, lead campaigns, market research both online and offline, specialist webportals and e-learning offers. In case my personal telephone number has also been collected, it may be used for offers of aforementioned products, for services of the companies mentioned above, and market research purposes.

Additionally, my consent also includes the processing of my email address and telephone number for data matching for marketing purposes with select advertising partners such as LinkedIn, Google, and Meta. For this, Vogel Communications Group may transmit said data in hashed form to the advertising partners who then use said data to determine whether I am also a member of the mentioned advertising partner portals. Vogel Communications Group uses this feature for the purposes of re-targeting (up-selling, cross-selling, and customer loyalty), generating so-called look-alike audiences for acquisition of new customers, and as basis for exclusion for on-going advertising campaigns. Further information can be found in section “data matching for marketing purposes”.

In case I access protected data on Internet portals of Vogel Communications Group including any affiliated companies according to §§ 15 et seq. AktG, I need to provide further data in order to register for the access to such content. In return for this free access to editorial content, my data may be used in accordance with this consent for the purposes stated here. This does not apply to data matching for marketing purposes.

Right of revocation

I understand that I can revoke my consent at will. My revocation does not change the lawfulness of data processing that was conducted based on my consent leading up to my revocation. One option to declare my revocation is to use the contact form found at https://contact.vogel.de. In case I no longer wish to receive certain newsletters, I have subscribed to, I can also click on the unsubscribe link included at the end of a newsletter. Further information regarding my right of revocation and the implementation of it as well as the consequences of my revocation can be found in the data protection declaration, section editorial newsletter.