BATTERY MODULE, BATTERY PACK, AND SYSTEM COMPRISING A BATTERY MODULE

• US 20160327226A1
• Filed: 11/05/2014
• Published: 11/10/2016
• Est. Priority Date: 11/08/2013
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Philips Lighting Holding BV (Signify N.V.)
• Inventors: KAAG, BJORN CHRISTIAAN WOUTER, STARING, ANTONIUS ADRIAAN MARIA
• Application Number:
  US15/033,903
• Publication Number:
  US 20160327226A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21S 9/035 the solar unit being integrated within the support for the lighting unit, e.g. within or on a pole
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/623 Portable devices, e.g. mobile telephones, cameras or pacemakers
• CPC Class Codes: H01M 10/627 Stationary installations, e.g. power plant buffering or backup power supplies
• CPC Class Codes: H01M 10/643 Cylindrical cells
• CPC Class Codes: H01M 2220/10 Batteries in stationary systems, e.g. emergency power source in plant
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H05B 45/18 using temperature feedback
• CPC Class Codes: H05B 47/105 in response to determined parameters
• CPC Class Codes: Y02B 20/72 in street lighting
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention relates to a battery pack for battery powered lighting systems comprising: —an outer wall surrounding the battery module made of a thermally insulating material, —a battery holder disposed within the outer wall comprising a plurality of battery receptacles in which batteries fit, and made of a thermally conductive material, and—a wireless power exchanger, comprising a wireless power tube coupled to the battery holder and disposed in the central opening, the wireless power tube being arranged for exchanging energy wirelessly with a wireless power stick that can be inserted into the wireless tube.

Claims

1. A battery module comprising

an outer wall surrounding the battery module made of a thermally insulating material,

a battery holder disposed within the outer wall comprising a plurality of battery receptacles in which batteries fit, and made of a thermally conductive material, a central opening, and a heat source disposed in the central opening of the battery module, wherein the heat source is a wireless power exchanger, comprising a wireless power tube coupled to the battery holder and disposed in the central opening, the wireless power tube being arranged for exchanging energy wirelessly with a wireless power stick that can be inserted into the wireless tube.

2. The battery module of claim 1, wherein the wireless power tube comprises a winding for receiving power from the wireless power stick and for transmitting power to the wireless power stick.

3. The battery module of claim 1, wherein the wireless power tube comprises a first winding for receiving power from the wireless power stick and a second winding for transmitting power to the wireless power stick.

4. The battery module of claim 1, comprising a temperature sensor for sensing the temperature of the batteries in the battery holder.

5. The battery module of claim 4, further comprising a controller arranged for monitoring the temperature sensed by the temperature sensor and for causing the heat source to be activated based on the sensed temperature.

6. The battery module of claim 1, wherein the battery module is shaped like prism or a cylinder, centered around a revolution axis, wherein the central opening is centered around the revolution axis.

7. The battery module of claim 6, further comprising a battery controller, said battery controller extending radially from the revolution axis between the central opening and the outer wall, occupying an arc segment of the base section of the battery holder, the plurality of battery receptacles being spread in a remaining arc segment of the base section of the battery holder.

8. The battery module of claim 1, being shaped so that a plurality of battery modules can be stacked around a wireless power stick.

9. A battery pack comprising a battery module of claim 1 and a wireless power exchanger for exchanging power with a load.

10. A battery pack comprising a plurality of battery modules of claim 8, wherein the plurality of battery modules comprise each a central opening, the battery pack further comprising a wireless power exchanger formed by a plurality of wireless power tubes being each respectively coupled to the battery holder of each battery module of the plurality of battery modules and disposed in their respective central opening, and a wireless power stick inserted into the wireless power tubes of the battery modules and arranged for exchanging energy wirelessly with the plurality of wireless power tubes.

11. The battery pack of claim 9, further comprising a power channel controller which is adapted to control the energy transfer with the battery modules based on at least one of the following parameters:

internal temperature of the respective battery modules, input voltage from an energy harvester, input current from an energy harvester, position of the respective battery module in the battery pack, state of charge of the respective battery module.

12. The battery pack of claim 11, wherein the power channel controller is adapted to control the energy transfer to an operating point having a selected efficiency based on an amount of heat to be injected in the battery module.

13. Lighting system comprising,

an illumination unit,

a battery module in accordance with claim 8 for supplying the illumination unit in power,

an energy source for supplying the battery module or the battery pack in power.