公开(公告)号：US20240072291A1

公开(公告)日：2024-02-29

申请号：US18462889

申请日：2023-09-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yu LIU

IPC: H01M10/04

CPC classification number: H01M10/0409

Abstract: This application provides a winding and unwinding device and a battery production system. The winding and unwinding device includes a turret, a driver, and a magnetic powder clutch. The turret includes a rotation shaft and at least one winding shaft, the rotation shaft being parallel to the winding shaft. A drive shaft of the magnetic powder clutch is connected to the driver and a driven shaft of the magnetic powder clutch is connected to the rotation shaft of the turret, such that the driver drives the rotation shaft of the turret to rotate. In this application, with the magnetic powder clutch disposed between the turret and the driver, after the turret rotates to a predetermined position, the rotation of the turret can be stopped without the need to cut off the power supply, ensuring the normal operation of the driver when the turret stops rotation, thus avoiding damage to the driver.

公开(公告)号：US20220137152A1

公开(公告)日：2022-05-05

申请号：US17433998

申请日：2020-02-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huixiu LUO ,  Yu LIU ,  Qidong LOU ,  Qiandeng LI

IPC: G01R31/396 ,  H01M10/48

Abstract: Embodiments of the present disclosure relate to the field of battery monitoring technology, and disclose a storage battery monitoring system and method. The system includes n cell monitoring cells (CMCs), a control module (11), and several daisy chain buses; where n is an integer greater than or equal to 2; the n CMCs are configured to monitor a plurality of cell modules electrically connected in a storage battery, and each CMC is configured to monitor at least one of the cell modules; the n CMCs are connected to the control module (11) through each daisy chain bus; the control module is configured to receive monitoring data of the plurality of cell modules uploaded by then CMCs through a transmission path formed by at least one daisy chain bus; and the control module (11) is further configured to identify a fault location according to the monitoring data when a fault occurring to the transmission path is detected, and adjust the transmission path according to the fault location so as to receive the monitoring data. According to the solutions provided by each embodiment of the present disclosure, the problem of communication failure due to the occurrence of a fault in the current transmission path can be avoided, and safety is improved.

公开(公告)号：US20240076155A1

公开(公告)日：2024-03-07

申请号：US18368582

申请日：2023-09-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu LIU

IPC: B65H18/10 ,  H01M10/04

CPC classification number: B65H18/103 ,  H01M10/0409 ,  B65H2301/515 ,  B65H2403/72 ,  B65H2701/19

Abstract: This application relates to a winding and unwinding apparatus and a preparation system of electrode plate. The apparatus includes supports, a rotating shaft, a rotating turret, and a power assembly. The rotating shaft is rotatably disposed on the support. The rotating turret is disposed on the rotating shaft and capable of rotating along with the rotating shaft so as to switch between at least two target operation positions. The power assembly includes a first power source and a magnetic powder clutch. The rotating shaft and the first power source are in transmission connection with each other via the magnetic powder clutch. The magnetic powder clutch is configured to control the rotating shaft to remain stationary when the rotating turret is hovering at each target operation position.

公开(公告)号：US20210036388A1

公开(公告)日：2021-02-04

申请号：US16965414

申请日：2019-11-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yu LIU ,  Jinglin LI ,  Qiandeng LI

IPC: H01M10/633 ,  H01M10/615

Abstract: The embodiments of the present disclosure disclose a battery heating system and method, and relate to the field of batteries. The battery heating system may include: a temperature sampling module configured to collect a target sampling temperature; a control module configured to control a heating module to enter a first heating mode when the target sampling temperature is not lower than a preset expected heating temperature; the heating module configured to enter the first heating mode to intermittently heat the battery module set by using a first portion of external electric energy, so as to maintain the target sampling temperature at the preset expected heating temperature.

公开(公告)号：US20200350649A1

公开(公告)日：2020-11-05

申请号：US16964314

申请日：2019-11-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yu LIU ,  Qidong LOU ,  Qiandeng LI

IPC: H01M10/6571 ,  H01M10/633 ,  H01M10/615

Abstract: Battery heating systems and methods are provided in the present disclosure. A battery heating system includes: a temperature sampling module configured to collect a target sampling temperature; a first switch configured to be turned on or off based on a driving signal; a control module configured to determine, based on the target sampling temperature and a correspondence between the target sampling temperature and the driving signal, a duration where the first switch is controlled to be turned on and a duration where the first switch is controlled to be turned off, and generate the driving signal; and a heating module configured to heat the battery module set using an output power of the battery module set when the first switch is turned on, and stop heating the battery module set when the first switch is turned off. As a result, fineness of battery heating can be improved.