公开(公告)号：US20200025833A1

公开(公告)日：2020-01-23

申请号：US16286557

申请日：2019-02-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fuming YE ,  Fupeng CAI ,  Qiandeng LI ,  Changjian LIU

IPC: G01R31/396 ,  G01R31/367

Abstract: The disclosure discloses a sampling detection circuit and a method for detecting a circuit malfunction. The method includes: receiving a detection instruction and controlling a plurality of equalization modules to be turned off in response to the detection instruction; collecting first sampled data of sampled equalization modules; controlling odd numbered equalization modules among the sampled equalization modules to be turned on and even numbered equalization modules among the sampled equalization modules to be turned off; collecting second sampled data of the sampled equalization modules; controlling the odd numbered equalization modules among the sampled equalization modules to be turned off and the even numbered equalization modules among the sampled equalization modules to be turned on; collecting third sampled data of the sampled equalization modules; and determining, according to the first sampled data, second sampled data and third sampled data, a malfunction in a sampling detection circuit and locating the malfunction.

公开(公告)号：US20220121262A1

公开(公告)日：2022-04-21

申请号：US17566723

申请日：2021-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Liansong WANG ,  Zhimin DAN ,  Fupeng CAI ,  Yizhen HOU ,  Wei ZHANG

IPC: G06F1/3212 ,  G06F1/16

Abstract: This application discloses a power supply guarantee system and method. The power supply guarantee system is applied to a battery management system. The power supply guarantee system includes: a main control module, configured to send a received wake-up time to a timing device; a high voltage power module, configured to power the timing device according to electrical energy in a high voltage battery pack; the timing device, configured to set a wake-up clock according to the wake-up time, start timing when the BMS enters sleep, and send a discharge instruction to the high voltage battery pack when the timing reaches the wake-up time; and a power conversion module, configured to convert high voltage electrical energy into low voltage electrical energy, and use the low voltage electrical energy to power the BMS, where the high voltage electrical energy is output by the high voltage battery pack according to the discharge instruction.

公开(公告)号：US20200006955A1

公开(公告)日：2020-01-02

申请号：US16382778

申请日：2019-04-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fupeng CAI ,  Fuming YE ,  Qiandeng LI ,  Changjian LIU

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/44 ,  H01M2/10 ,  H01M2/34

Abstract: A battery pack management system includes a controller, an isolation unit, a plurality of battery pack management units, and a plurality of battery packs. The plurality of battery pack management units are connected in series by a first daisy chain, and the plurality of battery pack management units are also connected in series by a second daisy chain. The first daisy chain transmits sampled data that is collected by the battery pack management units from corresponding battery packs and transmits control instructions of the controller. The second daisy chain transmits a failure prompt signal which is generated by a battery pack management unit that detects a failure. A first battery pack management unit and a last battery pack management unit of the plurality of battery pack management units connected in series are connected to the controller through the isolation unit.