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：US20200088801A1

公开(公告)日：2020-03-19

申请号：US16548987

申请日：2019-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Sixia MENG ,  Guoxiu WU ,  Qiandeng LI

IPC: G01R31/382 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48

Abstract: Disclosed is a battery pack temperature detection system, comprising: a battery pack disposed with a plurality of temperature monitoring points; a plurality of sampling circuits, wherein each temperature monitoring point is disposed with at least two of the plurality of sampling circuits, and the at least two of the plurality of sampling circuits disposed for one temperature monitoring point are different sampling circuits; and a control module configured to acquire temperature data of each temperature monitoring point by each of the disposed sampling circuits, and determine a current temperature of the battery pack according to the temperature data to determine whether the temperature of the battery pack exceeds a preset value.

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.

公开(公告)号：US20200274369A1

公开(公告)日：2020-08-27

申请号：US16588775

申请日：2019-09-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huixiu LUO ,  Baohai DU ,  Wei ZHANG ,  Qiandeng LI

IPC: H02J7/00 ,  B60L58/10 ,  H01M10/42 ,  H01M10/44

Abstract: Embodiments of the present disclosure disclose a battery management system. In the system, a first microcontroller is connected to a second microcontroller; a battery monitoring module is configured to monitor a state of the battery pack and transmit the state of the battery pack to the first and the second microcontroller respectively via a state signal of the battery pack, and control the state of the battery pack according to a control instruction from the first and the second microcontroller; a sampling control module is configured to detect the state of a high voltage loop of the battery pack, and transmit the state of the high voltage loop to the first and the second microcontroller respectively via a state signal of the high voltage loop of the battery pack, and control the state of the high voltage loop according to a control instruction from the first and the second microcontroller.

公开(公告)号：US20200094682A1

公开(公告)日：2020-03-26

申请号：US16357558

申请日：2019-03-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Kai WU ,  Wei DAI ,  Chao WANG ,  Qiandeng LI

IPC: B60L3/04 ,  B60L3/00 ,  H03K17/687

Abstract: The present disclosure provides a high-voltage interlock system and a detection method thereof. The high-voltage interlock system includes a target control device and at least one non-target control device connected in sequence. The target control device includes a detection unit, a current generation controller, a current generator, and a second high-voltage component. A controller in the target control device generates a pulse drive signal for driving the current generation controller, receives a detection result signal output from a current detector, and determines a fault of a high-voltage interlock circuit according to the detection result signal; the current generation controller generates an alternating voltage signal according to the pulse drive signal; the current generator outputs an alternating current signal according to the alternating voltage signal; the current detector acquires a voltage signal across a detection resistor set and outputs the detection result signal.

公开(公告)号：US20200072896A1

公开(公告)日：2020-03-05

申请号：US16364390

申请日：2019-03-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Le CHU ,  Qiandeng LI ,  Yanhui FU ,  Qidong LOU

IPC: G01R31/14 ,  G01R31/02 ,  G01R31/389 ,  G01R31/3835 ,  G01R27/14

Abstract: Disclosed is an insulation detection method that includes: a first and second equivalent resistances are calculated; the less one of the first and second equivalent resistances is taken as a first insulation resistance, which is an insulation resistance of the high voltage circuit on the side where the battery pack locates relative to the reference potential terminal; when the first insulation resistance is normal, the switch unit is closed, and a second insulation resistance is calculated according to the first and second equivalent resistances, voltages of a first and second sampling point when the switch unit is closed; the second insulation resistance is an insulation resistance of the high voltage circuit on the side where the load locates relative to the reference potential terminal; the insulation state of the high voltage circuit on the side where the load locates is determined according to the second insulation resistance.

公开(公告)号：US20230064240A1

公开(公告)日：2023-03-02

申请号：US17562079

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fangjie ZHOU ,  Yizhen HOU ,  Xiyang ZUO ,  Qiandeng LI ,  Le CHU

IPC: G01R31/389 ,  G01R31/392 ,  G01N27/02

Abstract: Embodiments of the present application provide a detection apparatus of electrochemical impedance spectroscopy and a battery management system, the detection apparatus including a waveform generator, where the waveform generator is integrated in a battery monitoring chip; an excitation resistor; a detection resistor; and an MOS switch, wherein the waveform generator is configured to generate a pulse waveform, a gate electrode of the MOS switch is configured to receive the pulse waveform; the excitation resistor is configured to enable the battery to generate an excitation current when the gate electrode of the MOS switch receives the pulse waveform; the detection resistor is configured to convert the excitation current into an excitation voltage, the excitation voltage is configured to calculate an electrochemical impedance of the battery, The detection apparatus of electrochemical impedance spectroscopy in embodiments of the present application can lower cost and volume of EIS detection.

公开(公告)号：US20200251918A1

公开(公告)日：2020-08-06

申请号：US16671360

申请日：2019-11-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanhui FU ,  Qidong LOU ,  Xinxin JIANG ,  Qiandeng LI

IPC: H02J7/00

Abstract: The present disclosure provides a control system, comprising a controller and a plurality of power regulating modules; the plurality of power regulating modules comprise at least one first power regulating module and at least one second power regulating module, the first power regulating module is woken up upon receiving an external wake-up signal, the controller is connected to an output end of one of the first power regulating modules, and an output end of the second power regulating module is connected to a load module; the controller is further connected to a wake-up end of the second power regulating module; the first power regulating module connected to the controller supplies power to the controller; the at least one second power regulating module is woken up upon receiving an internal wake-up signal sent by the powered on controller or upon receiving the external wake-up signal.

公开(公告)号：US20200094680A1

公开(公告)日：2020-03-26

申请号：US16364395

申请日：2019-03-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Chao WANG ,  Wei DAI ,  Qiandeng LI

IPC: B60L3/00 ,  H03K19/20 ,  H01H47/00 ,  H01H47/22

Abstract: A control apparatus comprises a microcontroller, an auxiliary circuit, a delay module and a logical circuit; the microcontroller is connected to a first input end of the logical circuit via the auxiliary circuit and connected to a second input end of the logical circuit via the delay module, and an output end of the logical circuit is connected to a device to be controlled; if the microcontroller is reset in a process of outputting the closing control signal, a delay disabling signal becomes invalid, the delay module is enabled to output the closing control signal within a preset delay time, wherein the delay time is greater than or equal to a reset time. A power supply system is also provided to avoid a risk that an automobile suddenly loses power due to unexpected reset of the microcontroller.

公开(公告)号：US20200088778A1

公开(公告)日：2020-03-19

申请号：US16519127

申请日：2019-07-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Jirong HUO ,  Le CHU ,  Yanhui FU ,  Qiandeng LI

IPC: G01R31/00 ,  H02H1/00

Abstract: Disclosed are a load state detection circuit and method. A microcontroller is connected to a switch unit which is connected between a detecting power supply and a load to be tested. A voltage sampling point is formed at either terminal of the load to be tested, and the voltage sampling circuit is connected between the voltage sampling point and the microcontroller. The voltage sampling circuit is configured to sample a voltage at the voltage sampling point. The microcontroller is configured to connect the load to be tested and the detecting power supply by controlling the switch unit, and determine whether a fault exists in the load to be tested according to a received voltage at the voltage sampling point sampled by the voltage sampling circuit, before connecting the load to be tested with the drive power supply.