Hand-held power tool rechargeable battery

• US 9,984,816 B2
• Filed: 12/18/2013
• Issued: 05/29/2018
• Est. Priority Date: 12/21/2012
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Lohr, Guenter, Krupezevic, Dragan, Mack, Juergen, Rejman, Marcin
• Primary Examiner(s): Williams, Arun
• Application Number:
  US14/654,331
• Publication Number:
  US 20150357683A1
• Time in Patent Office: 1,623 Days
• Field of Search: 320108
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/617 for achieving uniformity or desired distribution of temperature
• CPC Class Codes: H01M 10/6235 Power tools
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/247 specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A hand-held power tool rechargeable battery is provided as including a housing, at least one rechargeable battery cell, and an inductive charging unit, which includes at least one coil core and an inductive charging coil for charging the at least one rechargeable battery cell. It is provided that the inductive charging unit is accommodated detachably in the housing.

Claims

1. A hand-held power tool rechargeable battery, comprising:

a housing;

at least one rechargeable battery cell; and

an inductive charging unit disposed in the housing of the rechargeable battery that includes at least one coil core and an inductive charging coil for charging the at least one rechargeable battery cell, wherein the inductive charging unit including the at least one coil core and the inductive charging coil are disposed in the housing of the rechargeable battery and are accommodated detachably in the housing of the rechargeable battery.

2. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging coil is disposed on a coil plane of the inductive charging coil, and wherein the coil core is disposed on at least one plane in parallel to the coil plane, the inductive charging coil and the coil core having different basic shapes.

3. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging coil has a circular basic shape on the coil plane of the inductive charging coil.

4. The hand-held power tool rechargeable battery as recited in claim 1, wherein the coil core has a rectangular basic shape on the plane in parallel to the coil plane.

5. The hand-held power tool rechargeable battery as recited in claim 1, wherein the coil core spans a larger area on the plane parallel to the coil plane than the inductive charging coil on the coil plane.

6. The hand-held power tool rechargeable battery as recited in claim 1, wherein the coil core has a multipart design.

7. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging unit forms an independently testable assembly.

8. The hand-held power tool rechargeable battery as recited in claim 7, wherein the inductive charging unit is connected with the aid of at least one connecting arrangement to the assembly.

9. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging unit includes inductive charging electronics that are provided to charge the rechargeable battery cell.

10. The hand-held power tool rechargeable battery as recited in claim 8, wherein the inductive charging unit includes a housing part of the hand-held power tool rechargeable battery.

11. The hand-held power tool rechargeable battery as recited in claim 10, wherein the connecting arrangement is implemented on the housing part.

12. The hand-held power tool rechargeable battery as recited in claim 1, further comprising a heat compensation arrangement provided to distribute heat uniformly.

13. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging unit includes a coil carrier that includes a groove for accommodating the inductive charging coil.

14. The hand-held power tool rechargeable battery as recited in claim 13, wherein the coil carrier has at least one receiving area for accommodating the coil core.

16. The hand-held power tool rechargeable battery as recited in claim 1, wherein the inductive charging unit and the rechargeable battery cells are disposed within a single housing.

15. An inductive charging unit, comprising:

at least one coil core; and

an inductive charging coil for charging at least one rechargeable battery cell, wherein the inductive charging unit including the at least one coil core and the inductive charging coil are disposed in the housing and are accommodated detachably in the housing.