Green Cubes offers custom battery chargers and docking stations for portable and handheld devices. As a complete power system solution provider, Green Cubes has the fundamental battery chemistry knowledge that is the keystone of charger design. This allows Green Cubes to design and manufacture a charger that seamlessly integrates with the battery pack for exceptional ease of use and maximum energy delivery with a minimum charge time. Green Cubes maintains a catalogue of in-house reference designs for use in configuring individual battery charger solutions. Green Cubes‘s high efficiency chargers can be either a circuit board embedded in your device or a stand alone charger in a configuration that best suites the usage model of the portable device.
The range of handheld devices supported by Green Cubes includes bar code scanners, handheld readers, portable printers, rugged PDAs, handheld computers, handheld radios, GPS devices and wearable computers.
Green Cubes has experience designing medical battery chargers for:
- Defibrillators (AED)
- Patient monitoring equipment
- Surgical tools (saws, drills, reamers)
- Multi-parameter monitors
- Critical care monitors
- Glucose monitors
- Infusion pumps
- Enteral pumps
In order for an user to take full advantage of a portable device, it must be charged quickly and remain in a high state of readiness. Multi-bay battery chargers are the best way to keep the most demanding users up and running through multiple shifts and our customer can optimize charge time according to the battery chemistry and the current available to the system. Green Cubes routinely designs chargers with the number of bays ranging from one to eight. Our multi-bay chargers employ our unique microcontroller-based charging system and are available with the following features:
- Configurable LCD or LED status indicators for various battery conditions
- AC or DC inputs
- Battery management features including battery conditioning and gas gage calibration
- Battery health and status-of-charge indication
- Power management and conditional charging
- Fast charge regimens
- Custom enclosures that are rugged and have industrial design consistency with the device
- Custom electrical contacts and battery latching schemes
- Custom configurations such as vehicular-mount or desktop versions
- Relevant safety and EMC certifications
Green Cubes offers stand-alone single-bay chargers in addition to the larger multi-bay chargers. These units offer many of the same features as the multi-bay chargers, such as a customer defined charge time, custom plastic and LED status indicators. Many device manufacturers require both single and multi-bay chargers for the same device because of different usage models. Green Cubes can design custom chargers that are easily applied to numerous configurations.
Mobile and desktop docking solutions offer features beyond those expected of other chargers. Docking cradles provide the user with a repository for the portable device when it is not in active use. Our docking stations can be designed to be mechanically robust for the most demanding office or surgical environments.
Microcontroller based Charging
Our software-controlled microcontroller architectures have the advantages of flexibility and efficiency while low parts count minimize cost. The microcontroller performs multiple duties, including, pulse width modulation control for the charge bays, multi-channel control, user interface control, system communications and logic functions based on dynamic input and output power conditions. Integration of all blocks of the power subsystem into one module yields lower cost and smaller size with less heat, fewer interconnects and superior Electromagnetic Compatibility (EMC) performance.
Smart Battery Chargers
Green Cubes develops battery chargers with varying degrees of intelligence. Smart battery chargers are instructed through the SMBus (or I2C or HDQ bus) by a smart battery pack as to the voltage and current required by the pack. Smart battery chargers allow the battery pack to dictate the charge termination, however, they still have timers to limit each charging phase. The degree of intelligence embedded within smart chargers includes:
- Level 2 smart battery charger is a slave device. A smart battery transmits voltage and current instructions and sets the appropriate values.
- Level 3 smart battery charger can initiate commands to the smart battery. The smart battery charger suggests charging voltages and currents and can request charge initiation due to a system change such as the presence of an AC current or some other event.
Embedded Charging Circuitry
Charging circuitry can be embedded in the portable device, Green Cubes designs charging circuitry that seamlessly integrates in your medical devices and deliver a fully qualified, reliable charger with minimal component count and flexible features. Embedded charger subassemblies can be used to power the entire device as well as charge the batteries. This provides a clean, regulated DC source voltage to the main system power supply, simplifying design and lowering cost. As an integrated solution, the charger electronics can be accommodated on the same circuit board as the device electronics; this reduces design costs and valuable device real estate.