US 12,355,321 B2
Battery pack, power tool system, and charging system
Chao Meng, Nanjing (CN); Zichun Tang, Nanjing (CN); and Yang Zhang, Nanjing (CN)
Assigned to Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed by Nanjing Chervon Industry Co., Ltd., Nanjing (CN)
Filed on Mar. 10, 2022, as Appl. No. 17/691,338.
Application 17/691,338 is a continuation of application No. PCT/CN2021/096597, filed on May 28, 2021.
Claims priority of application No. 202010499845.5 (CN), filed on Jun. 4, 2020; application No. 202021010608.X (CN), filed on Jun. 4, 2020; and application No. 202120353725.4 (CN), filed on Feb. 8, 2021.
Prior Publication US 2022/0200389 A1, Jun. 23, 2022
Int. Cl. H02K 3/52 (2006.01); H02K 5/15 (2006.01); H02K 7/14 (2006.01); H02K 21/16 (2006.01)
CPC H02K 3/522 (2013.01) [H02K 5/15 (2013.01); H02K 7/145 (2013.01); H02K 21/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A motor, comprising:
a stator assembly comprising a stator core and a winding wound onto the stator core, wherein the winding comprises an input end and an output end;
a rotor assembly comprising a rotor shaft extending along a first straight line; and
a terminal assembly configured to connect or fix the input end and the output end,
wherein the stator core comprises first-type laminations, each of the first-type laminations is provided with connection arms for the winding to be wound around and a special-shaped portion, the connection arms and the special-shaped portion are integrally formed, the special-shaped portions are configured to form an access slot for connecting the terminal assembly when the first-type laminations are stacked along a direction parallel to the first straight line, and the access slot is disposed on an outer sidewall of the stator core, and
wherein a length L at which the access slot extends along the first straight line is greater than or equal to 5 mm and less than or equal to 40 mm.