Technology, patent registration and design

Our battery systems are based on state-of-the-art, long-lasting LiFePO4 cells. They are designed to combine a multitude of advantages while being extremely space-saving and economical. The smaller versions (12V/24V kits) are frequently used in campers, motorhomes, balcony power plants, boats, forklifts, and tiny houses. Our larger versions (48V kits), on the other hand, are ideally suited for conventional PV systems, forklifts, boats, and aerial work platforms. The higher energy storage capacity allows large appliances and entire households to be powered independently by the battery(ies) for several days or even weeks. Increasing the power and capacity is very easy by simply connecting identical batteries in parallel – even as a retrofit.

 

Our battery systems are complex to develop and have undergone extensive testing. Therefore, they are legally protected by various forms of protection. These include a patent application, several utility models, and the visual appearance (design/registered design). Details and sketches from the patent application are shown below as examples.

 

Advantages

Our battery systems consist of several High-performance cells together, which provide high cycle stability and thus a long service life of almost 8000 charging cycles This can be guaranteed. LiFePO4 cells are considered the safest and most economical battery option on the market – and for good reason:

• Their compact size and weight, reduced by up to 70% compared to other batteries, make them ideal for a wide range of applications, from campers and boats to powering entire houses.
• LiFePO4 batteries can be fully discharged and their capacity fully utilized. There is no memory effect like that which occurs with older batteries.
• LiFePo4 cells are intrinsically safe, meaning they do not ignite themselves and do not leak.
• LiFePo4 batteries are among the most modern lithium batteries. Due to a high number of cycles, the lifespan of LiFePo4 batteries is exceptionally long.
• LiFePo4 batteries are not only significantly cheaper and therefore more economical compared to lithium-ion batteries, but also have a higher cycle stability.

 

Patent application and utility model

Our battery systems are protected by patent applications, utility models, and design patents. The utility model certificates for the device for fixing prismatic battery cells, the interconnection cover and modular battery system with this interconnection cover, the protective cover and modular battery system with this protective cover and support element, and a battery cell with this support element are shown below.

 

The intellectual property rights can be found at the German Patent and Trademark Office under the following file numbers.

Designation	File number	Download
Protective cover and modular battery system with this protective cover	20 2022106 257	PDF
Wiring cover and modular battery system with this wiring cover	20 2022 106 264	PDF
Device for fixing prismatic battery cells	20 2022 000 119	PDF
Support elements and a battery cell with this support element	20 2022 107 078	PDF
Protective cover and system with this protective cover	20 2022 107 079	PDF

 

The design (registered design) is also protected and can be found at the German Patent and Trademark Office under the following file numbers.

Design protection (registered design)
009028020-0001
009028020-0002
009028020-0003
009028020-0004
009028020-0005
009028020-0006
009028020-0007
009028020-0008

 

Below we show some example sketches.

This diagram shows the 12V 280Ah variant of our battery system. It represents the basic structure of our classic battery system. It consists of four prismatic LiFePO4 cells, two high-performance plastic end plates, a battery management system, tension straps, insulating washers, and a variety of integrated features such as strap guides and fasteners.

 Battery system 12v 280Ah

 

The battery system consists of several components. One of them is this end plate made of high-performance plastic. It has a variety of functions such as belt guides, fastening mechanisms, and the temperature sensor channel.

End plate made of high-performance plastic

 

End plate made of high-performance plastic
with highlighted temperature sensor channel (9-2, 9-1, 9-3)

 

End plate back made of high-performance plastic

 

Covering the copper connectors with various functions

 

Cover (long version) of the copper connectors with various functions (sectional view)

 

 Coverage shown in an exemplary illustration during application

 

 

One of the advantages of our battery system is its flexibility and scalability. Significantly larger battery systems can be manufactured very easily and in a space-saving manner from the basic components.Below is an example of a 48V 280Ah kit. It consists of 16 cells, with 8 cells installed per row. This results in a very compact design with a stored energy of 14.3 kWh.

 

 

 

Intended uses

Our products are versatile and have a wide range of applications. Thanks to the shared basic structure of the different battery systems, cells can be easily added, thus increasing the battery's power, voltage, and storage capacity. The compact design of the LiFePO4 batteries allows them to be used in a variety of locations and for diverse purposes.

Our LiFePO4 battery kits can be used, for example, as mobile power or energy storage systems. This makes them the perfect basis for an emergency generator that guarantees your continued power supply during power outages, or a mobile battery that provides power for extended camping trips.

Our LiFePO4 batteries can be used not only for power outages or mobile applications, but also for feeding electricity into photovoltaic systems or balcony power plants. You can find more information on this topic in our blog article. How PV systems with LiFePo4 batteries work.

 

 

Here you can see our complete 12V 280Ah LiFePO4-based battery kit, which includes all necessary components. It consists of four EVE Grade A+ cells, a BMS, our heavy-duty mounting kit, and other functional accessories. In addition to the technical specifications, another important aspect is our very detailed, German-language instruction manual. This manual describes every step of the assembly process in detail.

cells 

 

 

The cells can also be arranged in different configurations, i.e., in single or double rows. This ensures maximum flexibility in battery dimensions, allowing the space requirements to be adapted to the specific installation situation.

 

Battery Management System

Our Daly BMS is one of the most advanced battery management systems with a wide range of functions. The BMS can be configured via smartphone, and the state of charge and other parameters can be viewed via the free app.

 

Heavy Duty Fixing Set

The Heavy Duty fixing set holds our battery kits together and is unique in its design. The set, consisting of black painted front and back panels, acts as the outer casing for the battery when used with other accessories.

The design is protected by the European Union Intellectual Property Office.

Below is a brief excerpt and sample images of our protected design.

 

  

  

 

 

 

Cover copper connections

 

 

Application sketch