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公开(公告)号：US20220352842A1
公开(公告)日：2022-11-03
申请号：US17858812
申请日：2022-07-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang WANG , Jiyang LI , Wen YE
Abstract: This application provides a powertrain, a coolant flow rate estimation method, and an electric vehicle. Coolant in a first cooling loop of the powertrain is configured to cool an inverter. An electronic pump drives the coolant to circulate in the first cooling loop. When a phase current of a motor is greater than or equal to a preset current value, a controller determines a rotation speed of the electronic pump at a first moment as a first rotation speed, and determines a coolant flow rate at the first moment based on a temperature at a first position in the first cooling loop, a temperature at a second position in the inverter, and a power loss of the inverter. In the solution of this application, data does not need to be separately calibrated for different thermal management systems. This reduces time consumed by data calibration and improves practicability.
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公开(公告)号：US20220348175A1
公开(公告)日：2022-11-03
申请号：US17868108
申请日：2022-07-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuhui HE , Jianjun HE , Yongjian WAN , Hui NI
Abstract: An electronic mechanical brake system and a vehicle. The electronic mechanical brake system includes a brake pedal, an electronic brake mechanism, a mechanical brake mechanism, a brake, and a switch mechanism with a first state and a second state. The electronic brake mechanism includes a controller and an electronic signal sensor. The controller, the electronic signal sensor, and the brake are electrically connected. When the switch mechanism is in the first state, the electronic signal sensor is configured to receive a braking signal of the brake pedal and transmit the braking signal to the controller. The controller controls the brake to brake based on the braking signal. The electronic mechanical brake system can improve driving safety. In addition, reliability of the mechanical brake system is high, and costs are low.
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公开(公告)号：US20220321005A1
公开(公告)日：2022-10-06
申请号：US17848155
申请日：2022-06-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Haitao CHEN , Xingzhong ZHANG
Abstract: A converter circuit is provided in this application, which includes a capacitor module and a balance module. The capacitor module includes at least a first capacitor and a second capacitor. The balance module includes at least a first resonant circuit. The first resonant circuit includes at least two switch groups connected in parallel and a first resonant cavity bridged between the two switch groups. The first capacitor and the second capacitor are connected in series. The first resonant circuit is separately bridged between two ends of the first capacitor and between two ends of the second capacitor. The balance module controls each switch in the first resonant circuit, so that each switch works with the first resonant cavity to affect a current, to balance a voltage between the two ends of the first capacitor and a voltage between the two ends of the second capacitor.
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公开(公告)号：US11463009B2
公开(公告)日：2022-10-04
申请号：US17103250
申请日：2020-11-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yiming Jiang
Abstract: This application provides a flying capacitor charging method and apparatus, applied to a multi-level topology circuit, to provide a flying capacitor charging solution with a small occupation area and strong applicability. The circuit is connected to an input power source by using a first switch, and is connected to an output power source by using a second switch. A first end of a first capacitor in flying capacitors in the circuit is connected to a first electrode of a first semiconductor switch transistor, a second end of the first capacitor in the flying capacitors in the circuit is connected to a second electrode of a second semiconductor switch transistor, and a second electrode of the first semiconductor switch transistor is connected to a first electrode of the second semiconductor switch transistor by using a second capacitor. The second capacitor is an input capacitor, an output capacitor, or another flying capacitor.
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公开(公告)号：US20220311113A1
公开(公告)日：2022-09-29
申请号：US17838533
申请日：2022-06-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Li YANG , Zhenghua ZOU
IPC: H01P1/37
Abstract: An electrical isolation apparatus. A signal is transmitted between a first transmission circuit, a first reference circuit, a second transmission circuit, and a second reference circuit according to a principle of electric field coupling between conductors. Therefore, the electrical isolation apparatus can be applied to isolation and transmission for a signal with a relatively high frequency between a first signal device and a second signal device. In addition, a material used by the electrical isolation apparatus may be a common metal conductor, which greatly reduces a size and costs of the electrical isolation apparatus and facilitates manufacturing and implementation of the electrical isolation apparatus.
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Patent Agency Ranking
196.发明申请公开(公告)号：US20220302831A1
公开(公告)日：2022-09-22
申请号：US17715337
申请日：2022-04-07
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Petar GRBOVIC , Roland HUEMPFNER , Jose Antonio COBOS , Pedro ALOU , Jesus Angel OLIVER , Miroslav VASIC
Abstract: A DC/DC power converter comprises three or more capacitors connected in series between an output terminal and a ground terminal, the three or more capacitors being connected in series by means of two or more capacitor connection points, and an input voltage switching unit configured to connect an input terminal to one of a group of switching connection points, the group of switching connection points comprising the two or more capacitor connection points and the output terminal. With such a DC/DC power converter it is possible, for example, to convert a variable DC voltage at the input into a variable DC voltage at the output, wherein the voltage range of the output voltage is smaller than the voltage range of the input voltage.
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197.发明申请公开(公告)号：US20220294381A1
公开(公告)日：2022-09-15
申请号：US17828930
申请日：2022-05-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Chaoqiang WU , Mengxuan LIN , Haojie LI
Abstract: A method for controlling heating of a motor includes: obtaining a heating target temperature value; determining, based on the heating target temperature value, a heating motor that needs to generate heat from a plurality of motors of a multi-motor drive system and heat generation power of the heating motor; and sending a first control instruction to the heating motor. The first control instruction is used to respectively input harmonic currents to three phases of windings of the motor, so that the heating motor generates heat based on the heat generation power. In this way the heating target temperature value is obtained. Therefore, the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power.
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公开(公告)号：US20220294340A1
公开(公告)日：2022-09-15
申请号：US17827454
申请日：2022-05-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang LIU
Abstract: This application discloses a voltage regulation module, a charging module, and a charging pile that may be used to charge an electric vehicle, to regulate an output voltage in a wide range, and implement seamless switching without power-off in a process of switching from a low-voltage output state to a high-voltage output state. The voltage regulation module includes a first DC/DC converter group and a second DC/DC converter group. Both a parallel circuit and a series circuit exist between the first DC/DC converter group and the second DC/DC converter group. In addition, a controllable switch group is disposed in each of the series circuit and the parallel circuit, and a semiconductor power transistor group is connected in parallel with two terminals of each controllable switch group.
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公开(公告)号：US20220290730A1
公开(公告)日：2022-09-15
申请号：US17828242
申请日：2022-05-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuhui HE , Jianjun HE
IPC: F16D65/18 , F16D55/226
Abstract: This application relates to a brake apparatus. The brake apparatus is connected to a rotating part. The brake apparatus includes a housing connected to the rotating part, a brake part, a transmission part, a drive part, a gain mechanism, and a compensation mechanism. The drive part drives, by using the transmission part, the brake part to move along a direction close to or away from the rotating part for braking and braking release. A moving member of the compensation mechanism is connected to the gain mechanism, and a transmission member of the compensation mechanism is connected to the drive part, to drive the gain mechanism to move along a direction close to the brake part. Such a design improves resetting efficiency of the brake part, and compensation is performed by using a mechanical structure, which helps simplify a structure of the brake apparatus and better meets an actual use requirement.
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公开(公告)号：US20220289085A1
公开(公告)日：2022-09-15
申请号：US17826741
申请日：2022-05-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaojing HE , Yanzhong WANG
Abstract: This application provides a thermal management system and an electric vehicle. The thermal management system includes a battery water circuit and a seat water circuit. The battery water circuit includes a cooling water pump and a battery cooling/heating plate connected through a cooling water pipe. The seat water circuit has a liquid inlet end and a liquid outlet end. The liquid inlet end is connected between a liquid outlet of the cooling water pump and a liquid inlet of the battery cooling/heating plate through a seat water pipe and the cooling water pipe, and the liquid outlet end is connected between a liquid inlet of the cooling water pump and a liquid outlet of the battery cooling/heating plate through the seat water pipe and the cooling water pipe. The seat water circuit can be cooled by using the battery water circuit, to improve energy efficiency of the thermal management system.
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