US 12,224,604 B2
Charge control circuit, charging device and charging system
Yanqiang Zhu, Changzhou (CN); and Yanliang Zhu, Changzhou (CN)
Assigned to Globe (Jiangsu) Co., Ltd., Changzhou (CN)
Filed by Globe (Jiangsu) Co., Ltd., Changzhou (CN)
Filed on Jun. 14, 2021, as Appl. No. 17/347,554.
Claims priority of application No. 202010558032.9 (CN), filed on Jun. 18, 2020.
Prior Publication US 2021/0399555 A1, Dec. 23, 2021
Int. Cl. B60L 58/20 (2019.01); B60L 53/65 (2019.01); H01M 10/42 (2006.01); H02J 7/00 (2006.01); H02M 3/335 (2006.01); B60L 58/18 (2019.01); H01M 6/50 (2006.01); H01M 10/44 (2006.01); H02J 1/10 (2006.01); H02M 1/00 (2006.01); H02M 3/158 (2006.01)
CPC H02J 7/0019 (2013.01) [B60L 58/20 (2019.02); H01M 10/4221 (2013.01); H02J 7/00047 (2020.01); H02J 7/0048 (2020.01); H02M 3/33561 (2013.01); B60L 53/65 (2019.02); B60L 58/18 (2019.02); H01M 6/5066 (2013.01); H01M 10/441 (2013.01); H02J 1/102 (2013.01); H02J 7/0013 (2013.01); H02J 2207/20 (2020.01); H02M 1/007 (2021.05); H02M 3/1582 (2013.01); H02M 3/1584 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A charge control circuit, comprising:
a power input end;
a power output end configured to be connected with batteries;
a switch unit connected between the power input end and the power output end, to control the power output end;
a control unit electrically connected with the switch unit, to control the switch unit; and
a detection unit connected with the control unit, to detect rated voltages of the batteries and send a detection signal to the control unit,
wherein the batteries are a plurality of rechargeable batteries and at least comprise a first rechargeable battery and a second rechargeable battery;
the power output end comprises a first power output end connected to the first rechargeable battery, and a second power output end connected to the second rechargeable battery;
the switch unit comprises a first switch connected to the first power output end, and a second switch connected to the second power output end;
a voltage adjustment circuit is further connected between the first switch and the first power output end; and
when the detection unit detects that the rated voltages of the first rechargeable battery and the second rechargeable battery are not the same, the control unit controls the second switch to be closed and the second rechargeable battery is charged, and at the same time the control unit controls the first switch to be closed and activates the voltage adjustment circuit for voltage adjustment, so that the first rechargeable battery is charged simultaneously, and charging currents of the first rechargeable battery and the second rechargeable battery are the same;
wherein the charge control circuit further includes a mode switching unit, connected with the control unit to output a switching signal and transmit the switching signal to the control unit, wherein the charge control circuit comprises three charging modes,
a first charging mode is charging the plurality of rechargeable batteries at the same time but charging powers to the plurality of rechargeable batteries are different,
a second charging mode is charging the plurality of rechargeable batteries individually and sequentially,
a third charging mode is charging the plurality of rechargeable batteries to full at the same time and the charging powers to the plurality of rechargeable batteries are the same,
the control circuit is controlled to select one of the three charging modes.