US 12,237,527 B2
Electric energy storage device and electric tool system
Chuanjun Liu, Changzhou (CN); and An Yan, Changzhou (CN)
Assigned to Globe (Jiangsu) Co., Ltd., Changzhou (CN)
Filed by Globe (Jiangsu) Co., Ltd., Changzhou (CN)
Filed on Jun. 17, 2021, as Appl. No. 17/349,925.
Application 17/349,925 is a continuation of application No. PCT/CN2019/114235, filed on Oct. 30, 2019.
Claims priority of application No. 201811564074.2 (CN), filed on Dec. 20, 2018; application No. 201811564236.2 (CN), filed on Dec. 20, 2018; application No. 201811564279.0 (CN), filed on Dec. 20, 2018; application No. 201811566089.2 (CN), filed on Dec. 20, 2018; application No. 201822145919.6 (CN), filed on Dec. 20, 2018; application No. 201822145933.6 (CN), filed on Dec. 20, 2018; application No. 201822146566.1 (CN), filed on Dec. 20, 2018; application No. 201822146585.4 (CN), filed on Dec. 20, 2018; and application No. 201822146597.7 (CN), filed on Dec. 20, 2018.
Prior Publication US 2021/0313662 A1, Oct. 7, 2021
Int. Cl. H01M 50/00 (2021.01); B25F 5/00 (2006.01); B25F 5/02 (2006.01); H01M 10/04 (2006.01); H01M 10/42 (2006.01); H01M 10/46 (2006.01); H01M 50/204 (2021.01); H01M 50/247 (2021.01); H01M 50/269 (2021.01); H01M 50/50 (2021.01); H01M 50/509 (2021.01); H01M 50/519 (2021.01); H01M 50/543 (2021.01); H01R 13/05 (2006.01); H01R 13/11 (2006.01); H02J 7/00 (2006.01)
CPC H01M 50/269 (2021.01) [B25F 5/00 (2013.01); B25F 5/02 (2013.01); B25F 5/023 (2013.01); H01M 10/0445 (2013.01); H01M 10/4207 (2013.01); H01M 10/46 (2013.01); H01M 50/204 (2021.01); H01M 50/247 (2021.01); H01M 50/50 (2021.01); H01M 50/509 (2021.01); H01M 50/519 (2021.01); H01M 50/543 (2021.01); H01R 13/05 (2013.01); H01R 13/113 (2013.01); H02J 7/0024 (2013.01); H02J 7/0063 (2013.01); H01M 2220/30 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electric tool system, comprising:
an electric energy storage device having:
four energy units with a same rated voltage, wherein the four energy units are divided into two energy modules, each energy module is provided with two energy units, and each energy module is provided with a positive electrode and a negative electrode, and
a socket including four voltage output terminals respectively connected to the positive and negative electrodes of the two energy modules, and the socket is also provided with two control parts which respectively control the two energy units in the two corresponding energy modules to switch between parallel state and series state; and
a plug connected to the socket, wherein the plug is provided with several connecting pieces connected to the four voltage output terminals to connect the two energy modules in parallel or series; wherein
the control part is provided with two parallel switches and one series switch, the parallel switches connect the two energy units in the corresponding energy module in parallel, and the series switch connects the two energy units in the corresponding energy module in series, and
one kind of the parallel switches and the series switch is a normally closed switch, and the other kind is a normally open switch,
the plug is provided with a switching part matching with the control part, and
the switching part includes an insulating part corresponding to the normally closed switch and a conductive part corresponding to the normally open switch, the insulating part disconnects the normally closed switch, and the conductive part turns on the normally open switch to switch the connection state of the two energy units in the energy module.