Battery cells must be tested for performance and operational reliability from the design phase to the production process, to safeguard its safety, reliability and cost. As batteries are prone to temperature-related issues, like overheating and overcharging, there can be extreme spikes in temperature known as ‘thermal runaway’. In order to evaluate the thermal performance of the battery, calorimetric testing can produce data that indicates defects at an early stage and thus help to predict a ‘thermal runaway’ at a later stage. A German research institute has developed a modular, scalable calorimeter to measure the thermal data of batteries of diverse cell sizes. The scalable system is suitable for applications in thermal monitoring from new module designs to new battery materials and quality assurance.The modules are currently in use at the research institute and this calorimeter has German utility model protection. The research institute is searching for partners for the joint further development in research cooperation agreements or for partners interested in a direct license.
Recycling or refurbishing of lithium-ion batteries is crucial in tackling the challenges of climate change and air pollution. While there is the demand for batteries to have more capacity and longer life cycles, lots of time and investment are also required to dismantle and recycle batteries. Precious metal, such as Lithium, needs to be saved while batteries need to be renewable as well.A start-up company has developed a Battery Management System (BMS) circuit, software and process to refurbish small lithium-ion batteries used in wheelchairs, laptops, tablets, drones and more. The technology enables the consumer to achieve significant cost savings and environmental benefits compared to buying new batteries or using other battery recycling methods, with a wide support for different types of batteries from various battery manufacturers. The company is seeking potential partners in Singapore to collaborate through a licensing agreement, whereby the know-how and the process of battery refurbishing will be transferred to the partner.
Renewable energy sources are intermittent, this means that electricity generation using these sources fluctuates. To supply the world with 100% renewable energy, energy storage system is indispensable. Conventional battery technologies such as lithium-ion or lead-acid batteries uses toxic materials, relatively expensive and unsafe.This invention provides a cost-effective and scalable flow battery that can store excess renewable energy using water (H2O) and table-salt (NaCl) as the storage medium, which is safer than lithium-ion batteries as these materials are non-flammable. These materials are also abundantly available and cost-effective.The flow battery is highly scalable. The power (in kW) and the energy storage capacity (in kWh) are decoupled unlike lithium-ion or lead acid batteries. This means that one can design the flow battery with a relatively small power but high energy storage capacity – enough to store energy for days to weeks. The flow battery is simple to manufacture and easy to implement. It requires a stack of ion-exchange and bipolar membranes to perform charging and discharging and water storage tanks.The technology provider is keen to work with potential technology adopters through technical collaboration and licensing agreement to deploy the technology in Asia.
The technology owner had developed a patented standalone AC battery with a proprietary electrode design that has both the characteristics of anode and cathode. This enables the battery to generate AC power (square / pulsed wave form) from a single battery and a single switch. In a typical direct current (DC) to AC power conversion configuration used for brushless DC motors (BLDC) in drones and electric vehicles – multiple DC batteries, switches, complex battery management system and inverter circuit are needed to generate 3-phase AC to power a BLDC. The novel AC battery uses a simpler circuit design that minimises battery management system, converters and inverters.The use of the third electrode enables the voltage within the battery cells to be divided by half, e.g. while there is 4V between anode and cathode within the conventional Li-ion battery, the electrode can divide the voltage into 2V each, leading to safer operations and longer cycle life. The technology owner is looking at integrating the Cockcroft-Walton Multiplier (CWM), an established circuit that generates high DC voltage from an AC input as part of the AC battery system. The technology owner aims to boost the voltage, e.g. from 1.85V to 20V for industrial drones with an additional cost of USD200, while achieving 30% higher battery capacity with the AC battery and CWM combination.The technology owner had already developed several prototypes including a 100mA pouch cell. They are currently working on optimising the thickness of the electrode and preparing for a pilot test in industrial drones. The technology owner is seeking technical collaboration to scale up the AC battery prototype, develop integrated AC battery with CWM, conduct pilot test in drones, e-bikes, or e-wheelchair and eventually to license their technology to battery or battery parts manufacturers.
The proposed heat management technology focuses on high power applications (above 2C) that result in battery overheating, which can cause significant reduction in lifetime, performance and safety hazards.Thermal Management System (TMS) - During normal operation of batteries, the battery cells emit heat, which could cause the temperature of the battery pack to rise drastically. Without a TMS in place, heat would be trapped in the battery pack and could cause cell-degradation, leading to shortened lifetime, decreased performance and fire hazard. The proposed thermal management solution overcomes battery-overheating issue. The solution consists of liquid cooling and a proprietary material that could effectively prevent fire propagation, extend lifetime and increase performance of the battery. Working Mechanism of TMS - The TMS works by dissipating heat away from the battery cells. The proprietary thermal material is dielectric and can be poured directly into any battery pack. As the material flows into the pack, the material envelops the cells and serves as a protective layer between the cells. The material solidifies when it cools. During battery operation, the material absorbs heat emitted by the battery cells. Heat is then dissipated from the material via a liquid cooling circuit integrated in the TMS.The technology provider is actively seeking potential partnerships and technology licensing for its (i) proprietary TMS and (ii) standard battery module that consist of the TMS. The technology provider is also open to working with potential partners to fast-track their Second Generation phase change material (PCM) development.