公开(公告)号：US20210245628A1

公开(公告)日：2021-08-12

申请号：US16972574

申请日：2019-01-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang ZUO ,  Zhimin DAN ,  Wei ZHANG ,  Yizhen HOU ,  Guowei LI ,  Xingyuan WU ,  Yanru LI

IPC: B60L58/27 ,  H02P27/08 ,  H02J7/00 ,  H01M10/615 ,  H01M10/63

Abstract: In a battery heating system an inverter includes a first-phase bridge arm, a second-phase bridge arm and a third-phase bridge arm connected in parallel, each of a upper bridge arm and a lower bridge arm is provided with a switch module, the switch module is connected in parallel with a buffer module; and a motor controller in the inverter is provided for providing driving signals to the switch module of a target upper bridge arm and the switch module of a target lower bridge arm to control the switch module of the upper bridge arm of any bridge arm among the three phases of bridge arms and the switch module of the lower bridge arm of at least one bridge arm among the bridge arms except the bridge arm where the switch module of the target upper bridge arm is located to be periodically turned on and off.

公开(公告)号：US20200212520A1

公开(公告)日：2020-07-02

申请号：US16297233

申请日：2019-03-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Xiyang ZUO ,  Wei ZHANG ,  Yizhen HOU ,  Guowei LI ,  Xingyuan WU ,  Yanru LI

IPC: H01M10/63 ,  H02P3/18 ,  H02P27/06 ,  H02J7/00 ,  H01M10/42 ,  H01M10/615 ,  H01M10/48 ,  H01M10/625

Abstract: The present disclosure provides a battery heating system and a control method thereof. The battery heating system includes a main positive switch, a main negative switch, an inverter, a motor, and a battery management unit. The inverter includes a first phase bridge arm, a second phase bridge arm and a third phase bridge arm connected in parallel. A motor controller in the inverter is configured to output a drive signal to a target upper-bridge-arm switch unit and a target lower-bridge-arm switch unit, so as to control the target upper-bridge-arm switch unit and the target lower-bridge-arm switch unit to be periodically turned on and off. The battery management unit is configured to collect state parameters of the battery pack. When the state parameters of the battery pack meet preset heating conditions, a control signal is sent to the motor controller to control the motor controller to output the drive signal.

公开(公告)号：US20190234997A1

公开(公告)日：2019-08-01

申请号：US16233620

申请日：2018-12-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Yizhen HOU ,  Weiping SUN ,  Meng LI ,  Wei ZHANG ,  Teng YU

IPC: G01R27/20 ,  H01M10/42 ,  H01H47/00

CPC classification number: G01R27/205 ,  B60L3/0069 ,  B60L3/12 ,  B60L50/60 ,  G01R31/025 ,  H01H47/002 ,  H01M10/425 ,  H01M2010/4271

Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method comprises steps of: controlling the insulation resistance obtaining circuit to output a low-frequency AC signal; when both the main relay and the pre-charge relay are switched off, obtaining an internal side insulation resistance of the main relay according to the low-frequency AC signal; if the internal side insulation resistance of the main relay is normal, controlling the pre-charge relay to be switched on; and when the main relay is switched off and the pre-charge relay is switched on, obtaining an external side insulation resistance value of the main relay according to the low-frequency AC signal. Therefore, the present disclosure can obtain the internal side and external side insulation conditions of the main relay.

公开(公告)号：US20190158054A1

公开(公告)日：2019-05-23

申请号：US16166478

申请日：2018-10-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhimin DAN ,  Wei ZHANG ,  Yizhen HOU ,  Jia XU

IPC: H03H7/06 ,  H03F3/45 ,  G01R31/36

CPC classification number: H03H7/06 ,  G01R19/0092 ,  G01R19/25 ,  G01R31/36 ,  G01R31/382 ,  G01R31/3835 ,  H03F3/45475 ,  H03F2200/165 ,  H03F2203/45022 ,  H03F2203/45151

Abstract: The present application provides an apparatus for processing signals of a high-voltage loop, a detector, a battery device, and a vehicle. The apparatus includes a filter circuit connected to an element to be detected and configured to filter signals from the element to be detected; a differential amplification circuit connected to the filter circuit and configured to amplify the filtered signals; and a processor connected to the differential amplification circuit and configured to process the amplified signals.

公开(公告)号：US20190120880A1

公开(公告)日：2019-04-25

申请号：US16165925

申请日：2018-10-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei ZHANG ,  Zhimin DAN ,  Jiechao LUO ,  Yizhen HOU

IPC: G01R19/165 ,  H02J7/00 ,  G01R31/36 ,  G01R19/10 ,  B60L11/18

CPC classification number: G01R19/16542 ,  B60L58/10 ,  B60L2240/549 ,  G01R19/10 ,  G01R31/3648 ,  G01R31/382 ,  H02J7/008 ,  Y02T10/7005

Abstract: A current detecting apparatus and a battery management system are provided. In the current detecting apparatus, a positive electrode of a power battery pack is connected to a first terminal of a primary positive circuit, a negative electrode of the power battery pack is connected to a first terminal of a primary negative circuit, and a current sensor is connected in series between the negative electrode of the power battery pack and the first terminal of the primary negative circuit; the current sensor is configured for obtaining and outputting a voltage signal of the power battery pack; a microcontroller unit is configured for implementing current conversion on the voltage signal, transmitting a detected current value, which is obtained by the current conversion, of the power battery pack and receiving a control command for controlling the primary positive and negative circuits to turn on or turn off.

公开(公告)号：US20190064280A1

公开(公告)日：2019-02-28

申请号：US16113424

申请日：2018-08-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhanyu SUN ,  Zhimin DAN ,  Yizhen HOU ,  Jiechao LUO ,  Wei ZHANG

IPC: G01R31/36 ,  G01R31/14

Abstract: The present disclosure provides a battery detection circuit and a battery management system. The battery detection circuit includes a positive relay, a negative relay, a first positive sampling unit, a first negative sampling unit, a second positive sampling unit, a second negative sampling unit, and a reference voltage terminal, wherein: all of the first positive sampling unit, the first negative sampling unit, the second positive sampling unit, the second negative sampling unit and a power battery pack to be detected are connected to the reference voltage terminal. With the battery detection circuit and the battery management system of the present disclosure, both the cost of the battery detection circuit and the complexity of the structure of the battery detection circuit can be reduced.