Tech Bundle

Singapore Battery Consortium

With rapid research advancements in battery technologies, lithium-ion batteries have become an indispensable part of modern life: they provide a reliable power source for portable electronic devices such as mobile phones and laptops, and have led to transformative technologies like electric vehicles. Continued research and development has yielded breakthroughs in new battery materials and chemistries with enhanced performance and lifespan, as well as system level improvements. In recent years, much attention is also given to repurposing batteries for new applications and recycling of end-of-life batteries. The Singapore Battery Consortium Tech Bundle features a curated list of technologies for enterprises to discover new collaboration and co-creation opportunities.

Scalable, Cost-effective Calorimeter for Thermal Monitoring of Batteries
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.
Battery Management System to Refurbish Lithium-ion Batteries
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.
Cost-Effective Energy Storage Solution for Renewable Energy Application
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.
Standalone Alternating Current (AC) Batteries and Cockcroft-Walton Multiplier
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.
High Power Batteries and Thermal Management Solution
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.  
Process for Rejuvenation of Spent Lithium-ion Battery Cathodes
Lithium-ion batteries (LIBs) have been the preferred portable energy source in recent decades. The tremendous growth in the use of LIBs has resulted in a great number of spent LIBs. Disposal of these spent LIBs will cause serious environmental problems due to hazardous components such as heavy metals and electrolytes. Materials contained in the spent LIBs are valuable resources and could be recycled by proper technologies. Current methods are not suitable for LIB recycling due to slow process, low purity of the products (low profits) and the use of non-environmental friendly leaching reagents. The proposed LIB recycling technology is based on a co-precipitation process and control system which can process various types of spent LIBs including lithium cobalt oxide (LCO), lithium manganese oxide (LMO), lithium nickel manganese cobalt oxide (NMC) and lithium nickel cobalt aluminium oxide (NCA). The co-precipitation method allows the recovery of cathode metal salts in their original form, without separation of the metal elements. The obtained metal salts could then serve as the precursor for synthesis of new cathode material.  In summary the process recovers the following products at more than 99% purity levels: (a) graphite and (b) cathode metal salts e.g. LiCo1/3Ni1/3Mn1/3O2, NiCO3, MnCO3, CoC2O4, and Li2CO3. The technology provider is seeking a partner who is willing to fund the prototype development and become an early adopter of the technology. Preferably, the partner should have access to spent LIB sources to support the trial.
Smart Telemetry for e-Mobility Battery Power System
The smart telemetry is a system for remote monitoring of the status and parameters of the battery system in electric vehicles. The system front-end comprises of Global Positioning System (GPS) and 3rd Generation/4th Generation cellular communication (3G/4G) enabled devices with built-in sensors, to provide battery stack monitoring and data-logging capabilities.  Data collected are relayed in real-time to data centre at the back-end.  The system is a plug and play setup and comes with remote system recovery function from the server. The technology is connected to the car's battery management system to collect the basic battery data through CAN bus for State-of-Charge (SoC) and State-of-Health (SoH) determination. The algorithm developed and built in on-board to determine the SoC and SoH of the battery pack, can support individual cell level. The technology will monitor and diagnose different parameters (i.e. Voltage, Temperature, SoC, SoH) of the individual battery cell in real time, and provide notifications of the failure/defective cell.
Redox Targeting Method for Recycling of Spent Lithium-Ion Batteries Material
With the retirement of massive amount of end-of-life lithium ion batteries (LIBs), proper disposal of the hazardous wastes and cost-effective valorization of useful materials have become increasingly pressing and attracted extensive attention worldwide. The state-of-the-art recycling technologies, which are generally based on chemical leaching methods, have critical issues of enormous chemicals consumption, secondary pollution and tedious procedures. The technology relates to an innovative redox targeting-based process for the recycling of spent lithium iron phosphate (LiFePO4) batteries. With 0.20M of ferrocyanide [Fe(CN)6]3- solution as a selective and regenerative redox mediator, LiFePO4 is readily broken down into FePO4 and Li+ via the redox-targeting reaction. An Li-removal efficiency of 99.8% has been achieved with 50 minutes reaction at ambient conditions. The reacted redox species [Fe(CN)6]4- are instantaneously regenerated on the electrode for subsequent round of reaction while Li+ ion is separated from the counter electrode compartment as lithium hydroxide (LiOH).  The technology provider is currently seeking industry partner to scale-up and commercialise the technology.
Novel Flow Frame Design for Redox Flow Battery
With the wide deployment of renewable energy harvesting devices, such as solar cells and wind turbines, there is an urgency to develop efficient and economical energy storage systems to stabilize the intermittent and often unpredictable primary power sources before the power can be channeled to the grid safely or utilized for on-site loads. Redox flow batteries (RFBs) are regarded as promising electrochemical energy storage devices due to their special features of separable energy and power capacity. However, redox flow batteries tend to have lower energy densities than integrated cell architectures. Here our inventions introduce the novel engineering design to and reduce bulk resistance with no significant increase in flow resistance, obtaining uniform flow throughout the battery cell and improving the overall system efficiency.