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Thermal Management
In Detail.
Production Chain.
Thermal Management

Our Thermal Management Systems Keeps Electric Vehicles at Just the Right Temperature.

In Detail.
New Technology. New Demands.

The advent of large electric vehicles poses interesting challenges as well as opportunities. Heat isn’t an ample byproduct, “refueling“ becomes a time-consuming task and batteries need careful temperature management. Our thermal management systems are a complete solution that keeps everything running at the right temperature, as long as possible – day-to-day and year after year.

In Detail.
Just the Right Size.

Our new cooler is designed especially for the lower working temperatures of electric vehicles, offering reductions in both weight and size. By minimizing the use of compressor and fans to save energy, it helps decrease battery usage and increases the vehicle’s operating range.

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Made for
Double Duty.

Our integrated high-voltage compressor supersedes the HVAC compressor and supplies cooling for both the HVAC and battery. It is directly driven from the main high-voltage battery for maximum efficiency.

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High Voltage. High Efficiency.

High-voltage heaters deliver heat for both the battery and HVAC. The heaters (high-voltage driven to eliminate energy losses caused by conversion) are managed by the control system and used sparingly since heat generated from the driveline is used.

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Control System.
The Brains of the Operation.

The control system in our Thermal Management Systems, in conjunction with our expertly programmed ECU, take ambient temperatures and driving cycles into account in order to carefully balance cooling and heating needs throughout the system – always with the aim of conserving the battery to increase the vehicle’s operating range.

Control System.


Our TMS makes sure that every component is cooled to its individual optimal operating temperature. To save energy, excess heat is recycled and used for heating the cabin and battery.


To ensure peak performance and a long life cycle, the battery temperature is constantly monitored and kept at an optimal 25°C.


To keep the system efficient, simple and compact, the HVAC is supplied with heater and compressor

In Short.

We deliver complete Thermal Management Systems characterized by high flexibility and a modular approach where an intelligent ECU works in tandem with coolers, heaters, pumps and compressor – all tailored for electrical vehicles with three goals in mind: smooth operation, energy saving and high efficiency.

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Lower carbon
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Production Chain.
A One-Stop Technology Shop.
We make complete cooling, thermal management and hydraulic systems from the ground up. Combining extensive engineering and application knowledge with state-of-the-art production means we can ensure superior quality, while keeping the time from order to prototype as short as possible.
A One-Stop Technology Shop.
We make complete cooling, thermal management and hydraulic systems from the ground up. Combining extensive engineering and application knowledge with state-of-the-art production means we can ensure superior quality, while keeping the time from order to prototype as short as possible.
To Find the Best Solutions, We Look Into the Future.
Based on our extensive application knowledge and thermodynamic expertise, we have developed Seidr – a state-of-the-art calculation tool that models the behavior of fans, liquids, materials, headers and more. This helps us create a first, optimized layout before we
start modeling.
A First Look at Something Really Cool.
After getting agreement on our layout, we begin modeling the design in exact detail. After we’ve thoroughly examined the 3D-model, it’s sent to you – no more than one week after the agreement is finalized.
Production drawings
Getting Down to the Nitty Gritty.
After your agreement, the final design is broken up into detailed production drawings to enable manufacturing of each individual part. With a complete bill of materials, it’s time to start production.
Component production
Making Sure There is No Weakest Link.
All parts included in the complete BOM of the final product are manufactured. Either internally in our own production facilities – we have full control of the production chain with capacity for aluminum matrix and steel production – or by handpicked and approved suppliers that meet our high demands on quality and delivery times.
Prototype assembly
Ready for Testing.
Every new product will pass a prototype assembly where both production and design thoroughly evaluate the prototype to ensure that all design and customer specifications are met or exceeded.
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January 03, 2023

Ymer Technology’s wind division is acquired by HydraSpecma. The transaction will strengthen the position as a supplier to the wind industry.

Ymer Technology’s wind division that develops and manufactures cooling systems for on- and off- shore wind turbines has been acquired by the Power and Motion company, HydraSpecma. With the transaction HydraSpecma strengthen its position as leading supplier within the wind industry.

With the acquisition of Ymer Technology’s wind division, the international Power & Motion company HydraSpecma headquartered in Skjern, Denmark is becoming an even stronger supplier and development partner to the wind industry. The two companies have recently settled an agreement which will increase strength and capacity to accept even more projects within the wind power segment.

HydraSpecma, that is owned by the Danish industrial conglomerate Schouw & Co, has acquired Ymer Technology’s wind division that is headquartered in Silkeborg, Denmark. HydraSpecma sees a great potential in the wind industry the upcoming years and the two companies will complement each other in multiple areas. HydraSpecma is specialized in lubrication- and filtration systems and pitch-hydraulic, while Ymer Technology have cooling and conditioning of nacelles as their primary business area.

The goal, to achieve an even stronger position in the market has also played a significant role for Ymer Technology Jørgen Krogh, Vice President of Ymer Technology explains. In few years, Ymer Technology has established a robust customer portfolio due to the company’s expertise, especially within cooling systems for wind turbines.

– Through a close cooperation with our customers we have taken significant steps within development. We have gone from being a component supplier to co-developer of systems to some of the largest OEM customers. Now the time has come to take the next large step. The winds of change are blowing within the wind industry and to stand even stronger in that process I see Ymer Technology and HydraSpecma as the perfect match, says Jørgen Krogh.

HydraSpecma have been collaborating with the leading wind turbine manufactures in more than 40 years and are experiencing and increasing demand with the wind power segment. The acquisition of Ymer Technology’s wind division is a prolongation of HydraSpecma’s strategic ambition to strengthen their position with the growing industry.

HydraSpecma and Ymer Technology is similar in many areas. Both companies excel in service excellence and they both have a flexible production on a global scale, which makes us a strong business partner. Together, we are ready to secure our customers the best complete solutions all the way from prototype development to serial production. We are convinced that this acquisition will make us stronger in this area in the future – Morten Kjær, CEO of HydraSpecma

During the discussions on HydraSpecma’s acquisition of Ymer Technology’s wind division, both Morten Kjær and Jørgen Krogh have been confirmed in the fact that the companies’ values are very close to each other. That has strengthened the belief that the acquisition and increased focus on the wind power industry will become a success.

A stronger partner for the wind industry

The acquisition must also be seen in light of the increasing need in the market for consolidation.
– There is no doubt that size matter as a supplier to the wind industry. Our purchase volume and production capacity will increase, and  we will stand stronger as we gain strength and capacity to take more projects from all customers and deliver complete systems. Morten Kjær emphasizes and adds that the acquisition will increase HydraSpecma’s revenue with approximately 575m Danish kroner.

HydraSpecma will be the continuing company and will continue to be headquartered in Denmark. HydraSpecma Group and Ymer Technology’s wind division respectively employs 1.300 and 180 persons and have production facilities in Asia, Europe as well as in North- and South America.

About Ymer Technology

Ymer Technology was founded in Sweden in 2005 under the name Ymer Technology AB. Ymer Technology has specialized in cooling systems and thermal management systems. The company is headquartered in Stockholm and has production facilities in Sweden, China, India and USA. In 2021 Ymer Technology had a revenue of 1bn Swedish kroner and the company has 277 employees.

About HydraSpecma

HydraSpecma was founded in 1974 and today it is Denmark’s largest supplier of Power & Motion systems as well as solutions for the wind power industry. HydraSpecma is a customer driven company that delivers advanced hydraulic and electronic solutions for a wide range of segments within the Power & Motion market on a global scale as well as in the local Nordic aftermarket.
HydraSpecma’s wind division also delivers filtration- and lubrication systems as well as pitch-hydraulic systems for the wind industry. HydraSpecma is headquartered in Denmark and have production facilities in Denmark, Sweden, Norway, Finland, Poland, England, Netherlands, India, China and Brazil. HydraSpecma also operates a series of stores for the aftermarket in the Nordics. In 2021 HydraSpecma had a revenue of 2,3bn Danish kroner and the company have 1.300 employees whereof a large part is employed in Denmark and Sweden. Since 1988 HydraSpecma has been a part of the Danish industrial conglomerate Schouw & Co.

For further information please contact:
Vice President, Jørgen Krogh, Ymer Technology, +45 2042 2838
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