IP Library › Granted Patent US 9,722,441
Granted Patent B2
US 9,722,441 · App. 14/315,929 · Granted Aug 1, 2017

Hand tool battery including a bridge rectifier

Inventor: Guenter Lohr (Leinfelden-Echterdingen, DE)
Assignee: ROBERT BOSCH GMBH
H02J7/0052H02M7/219H02J7/0042H02J2007/0059H02M2007/2195Y02B70/1408
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Quick Facts
Patent No.
US 9,722,441
App. No.
14/315,929
Granted
Aug 1, 2017
Kind
B2
Abstract

A hand tool battery includes a charging coil and a bridge rectifier. The bridge rectifier has at least two rectifying arrangements for synchronous rectification.

Claims (15)

1. A hand tool battery, comprising:

a charging coil; and

a bridge rectifier, wherein the bridge rectifier has at least two rectifying arrangements for synchronous rectification,

wherein the bridge rectifier has a shut-off device to switch the at least two rectifying arrangements simultaneously to a passive state at least during a no-load operation.

2. The hand tool battery of claim 1 , wherein a same DC voltage potential is present at one power terminal of each of the two rectifying arrangements.

3. The hand tool battery of claim 1 , wherein the bridge rectifier includes a control arrangement to generate control signals of the rectifying arrangement.

4. The hand tool battery of claim 3 , wherein the control arrangement is configured to adjust the control signals to a switch-off voltage at least during the no-load operation.

5. The hand tool battery of claim 1 , wherein the bridge rectifier has at least one voltage limitation device which limits maximum values of control signals of the rectifying arrangement during a rectifying operation.

6. The hand tool battery of claim 5 , wherein the voltage limitation device includes at least one voltage reference arrangement.

7. The hand tool battery of claim 1 , wherein the shut-off device has at least one switch-off transistor to influence at least the control arrangement as a function of a switch-off signal.

8. The hand tool battery of claim 1 , wherein the bridge rectifier includes a control circuit to control the rectifying arrangement as a function of its switching voltage.

9. A circuit, comprising:

a charging coil; and

a bridge rectifier having at least two rectifying arrangements for synchronous rectification

wherein the bridge rectifier has a shut-off device to switch the at least two rectifying arrangements simultaneously to a passive state at least during a no-load operation.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 10, 2014
From: LOHR, GUENTER
To: ROBERT BOSCH GMBH
Reel/Frame 033714/0865 →
Priority Claims (2)
DE 10 2013 212 731 · Jun 28, 2013 · national
DE 10 2013 215 820 · Aug 9, 2013 · national
Continuity (1)
Related Publication 20150002081A1 · Jan 1, 2015