US 12,322,991 B2
Battery pack and an adapter with a voltage conversion circuit
Qing Gao, Nanjing (CN); Hong Zhu, Nanjing (CN); and Zhijian Lu, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Dec. 13, 2021, as Appl. No. 17/549,230.
Application 17/549,230 is a continuation of application No. PCT/CN2020/136005, filed on Dec. 14, 2020.
Application 17/549,230 is a continuation of application No. PCT/CN2019/126426, filed on Dec. 18, 2019.
Claims priority of application No. 201910518043.1 (CN), filed on Jun. 14, 2019; application No. 201911047627.1 (CN), filed on Oct. 30, 2019; and application No. 202010076760.6 (CN), filed on Jan. 23, 2020.
Prior Publication US 2022/0102997 A1, Mar. 31, 2022
Int. Cl. H02J 7/00 (2006.01); H02J 7/02 (2016.01)
CPC H02J 7/0068 (2013.01) [H02J 7/00036 (2020.01); H02J 7/00712 (2020.01); H02J 7/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A combination, comprising:
a battery pack;
a first adapter; and
a second adapter;
wherein the battery pack comprises a battery pack interface at least capable of being detachably connected to a power tool;
wherein the first adapter comprises a plug for access to an alternating current, an alternating current input interface electrically connected to the plug, an alternating current-direct current conversion circuit electrically connected to the alternating current input interface and configured to convert the alternating current into a direct current, and a direct current output interface electrically connected to the alternating current-direct current conversion circuit and configured to output the direct current;
wherein the second adapter is capable of being electrically connected to the first adapter and the battery pack, is capable of charging the battery pack with a charging power greater than 10 W, and comprises an adapter interface configured to be detachably connected to the battery pack interface, a direct current interface configured to be detachably electrically connected to the direct current output interface, a voltage conversion circuit connected in series between the direct current interface and the adapter interface and configured to convert the direct current into an electric power output adapted to the battery pack, and a two-way control module connected between the direct current interface and the adapter interface and connected to the voltage conversion circuit; and
wherein the two-way control module is configured to be capable of controlling a current direction and an output voltage of the voltage conversion circuit according to a signal state of the direct current interface and a signal state of the adapter interface so that the direct current interface is capable of being connected to the first adapter to receive power and is also capable of being connected to an external power consumption device to output power.