A lighting network (100) and methods therefore are disclosed. The lighting network (100) a plurality of lighting units (10) that can operate on AC power and DC back up power if the AC power is removed. A controller (15) is used to redistribute the DC power between the plurality of lighting units (10) in the event that DC power is low or exhausted in one of the plurality of lighting units (10).

A lighting network (100) and methods therefore are disclosed. The lighting network (100) a plurality of lighting units (10) that can operate on AC power and DC back up power if the AC power is removed. A controller (15) is used to redistribute the DC power between the plurality of lighting units (10) in the event that DC power is low or exhausted in one of the plurality of lighting units (10).

A secondary power system is configured to connect to a motor vehicle having a powertrain comprising an engine and a first alternator. The secondary power system includes a second alternator connected to the engine, one or more electro-chemical storage devices coupled to the second alternator and configured to be charged by the alternator, and one or more inverter chargers. The inverter chargers may operate in a first mode to provide AC power to loads on the vehicle or in a second mode to receive alternative power and charge the storage devices. In an embodiment, the secondary power system includes multiple storage devices each comprising at least one electro-chemical storage pack and a logic. The storage devices are interconnected by a junction box. The logics within each storage device may selectively disrupt power flow from the junction box upon detection of an error condition.

A secondary power system is configured to connect to a motor vehicle having a powertrain comprising an engine and a first alternator. The secondary power system includes a second alternator connected to the engine, one or more electro-chemical storage devices coupled to the second alternator and configured to be charged by the alternator, and one or more inverter chargers. The inverter chargers may operate in a first mode to provide AC power to loads on the vehicle or in a second mode to receive alternative power and charge the storage devices. In an embodiment, the secondary power system includes multiple storage devices each comprising at least one electro-chemical storage pack and a logic. The storage devices are interconnected by a junction box. The logics within each storage device may selectively disrupt power flow from the junction box upon detection of an error condition.

The invention relates to a PSE device (2) to be used in a PoE lighting system (1), wherein the PSE device (2) is adapted to receive input power from a power providing system (7). The PSE device (2) comprises a power detection unit for detecting whether the received input power is primary input power or backup input power, wherein the PSE device (2) is adapted to control the power consumption of lighting units (31, 32) depending on the power detection. This allows for an indication of an emergency situation, in which the backup input power is provided, to the PSE device (2) without necessarily requiring data communication means. Moreover, the power consumption of the lighting units (31, 32) can be more efficiently utilized in case of emergency.

The invention relates to a PSE device (2) to be used in a PoE lighting system (1), wherein the PSE device (2) is adapted to receive input power from a power providing system (7). The PSE device (2) comprises a power detection unit for detecting whether the received input power is primary input power or backup input power, wherein the PSE device (2) is adapted to control the power consumption of lighting units (31, 32) depending on the power detection. This allows for an indication of an emergency situation, in which the backup input power is provided, to the PSE device (2) without necessarily requiring data communication means. Moreover, the power consumption of the lighting units (31, 32) can be more efficiently utilized in case of emergency.

The invention relates to a cycle test method for at least one rechargeable battery (1) having, in particular, a single-battery emergency lamp (2) as a load, wherein the battery (1) is connected to a supply device (3) for charging/discharging at the location of use, comprising the following steps: i) charging the battery (1) by means of the supply device (3); ii) interrupting the charging for a time, in particular a specified time, in order to lower the temperature of the battery (1); iii) discharging the battery (1) to a specified remaining voltage value; and iv) performing steps i) to iii) multiple times.

The invention relates to a cycle test method for at least one rechargeable battery (1) having, in particular, a single-battery emergency lamp (2) as a load, wherein the battery (1) is connected to a supply device (3) for charging/discharging at the location of use, comprising the following steps: i) charging the battery (1) by means of the supply device (3); ii) interrupting the charging for a time, in particular a specified time, in order to lower the temperature of the battery (1); iii) discharging the battery (1) to a specified remaining voltage value; and iv) performing steps i) to iii) multiple times.

The invention is in the field of emergency lighting devices and power supply of emergency lighting devices. A LED converter for an emergency lighting unit comprises a LED driver for supplying a current to a LED lighting device, an energy storage interface for connecting an energy storage device, a charging circuit for charging the energy storage, and a control circuit. The energy storage interface is configured to connect at least two different types of energy storage devices. The charging circuit sets at least one energy storage management parameter according to the type of energy storage device connected by the energy storage interface. The control circuit determines the type of energy storage device connected by the energy storage interface and controls the charging circuit to set the energy storage management parameter according to the determined type of energy storage device.

The invention is in the field of emergency lighting devices and power supply of emergency lighting devices. A LED converter for an emergency lighting unit comprises a LED driver for supplying a current to a LED lighting device, an energy storage interface for connecting an energy storage device, a charging circuit for charging the energy storage, and a control circuit. The energy storage interface is configured to connect at least two different types of energy storage devices. The charging circuit sets at least one energy storage management parameter according to the type of energy storage device connected by the energy storage interface. The control circuit determines the type of energy storage device connected by the energy storage interface and controls the charging circuit to set the energy storage management parameter according to the determined type of energy storage device.