Huawei Digital Power Technologies Co., Ltd.

Shanghai Liangxin Electrical Co., Ltd

Huawei Technologies Co., Limited

Xiaokang Tian

Xiufeng Zhang

Hao Wang

Jian Shi

Fugao Zhao

Taixian Chen

Jisheng Sun

Jianfei Ma

Yanzhong Zhang

Yazhu Zhao

Shanbo Ren

Guangming Huang

Wei Shi

Jiang Zhang

Guangchao Yan

Fangpo Zhang

Yuhan He

Jichang Huang

Jiajing Wu

Xiaogang Guo

An energy storage status monitoring structure and a rotary switch are provided and relate to the field of electrical technologies. The energy storage status monitoring structure includes an operation mechanism, an energy storage assembly, and a release assembly. The operation mechanism includes an upper cover, a rotating shaft rotatably connected to the upper cover, and an energy storage tray connected to the rotating shaft. The energy storage assembly is connected to the energy storage tray. A sensing portion is disposed on the energy storage tray. A sensing component is disposed on the release assembly. When the energy storage tray rotates to enable the energy storage assembly to store energy, the sensing portion corresponds to the sensing component, so that the sensing component outputs a corresponding sensing signal.

Energy storage status monitoring structure and rotary switch

This application discloses a protection circuit for preventing a misconnection at an input end and a photovoltaic power generation system, and relates to the field of power electronics technologies. The protection circuit includes an input end, a misconnection detection unit, a mechanical interlocking unit, and a switch unit. The input end is configured to connect to an output end of a direct current power supply. A first input end of the misconnection detection unit is connected to a first port of the input end, and a second input end of the misconnection detection unit is connected to a second port of the input end. An output end of the misconnection detection unit is coupled to the mechanical interlocking unit. The mechanical interlocking unit is connected to the switch unit. A first end of the switch unit is configured to connect to the input end, and a second end of the switch unit is configured to connect to a next circuit. The misconnection detection unit is configured to: when connection wires of the first port and the second port are incorrect, control the mechanical interlocking unit to keep the first end of the switch unit and the second end of the switch unit in a disconnected state. When positive and negative poles of a power supply connected to the input end are misconnected, the protection circuit can be used to prevent a circuit from being affected by the misconnection.

Protection circuit for preventing misconnection at input end and photovoltaic power generation system

A power supply system includes a control unit, a switch, a direct current source, and a power change unit. The switch includes a switch unit and an operation mechanism. The operation mechanism is configured to receive a switch-off signal and control the switch unit to be turned on or off. The switch unit includes a first static contact, a movable contact, and a first arc extinguishing structure. When the switch unit is turned off, the movable contact rotates about a rotation center relative to the first static contact by a first included angle to be separated from the first static contact, to generate a first arc. The first arc extinguishing structure includes a first arc extinguishing end part and a second arc extinguishing end part. A connection line between the first arc extinguishing end part and the rotation center of the movable contact is a first line.

Power supply system and switch unit

An opening switch and a remote circuit breaker are provided. The opening switch includes a base, and an energy storage assembly and a lock catch assembly that are disposed on the base; the energy storage assembly is disposed on an inner wall of the base, one end of the lock catch assembly is hinged to the base, a lock catch protrusion is disposed on the lock catch assembly, and the lock catch protrusion includes a barrier wall; and when the barrier wall is configured to abut against an energy storage arm of the energy storage assembly, under an action force of the energy storage arm, the lock catch assembly has a rotation tendency, so that the energy storage assembly maintains an energy storage state.

Opening switch and remote circuit breaker

A power mechanism, a switch, a power conversion apparatus, and a power supply system. The switch includes a contact component, a knob, and a power mechanism connected between the contact component and the knob. The power mechanism includes a fastening bracket, a knob connector, a contact connector, a transmission component, a trip unit, and a cradle. Both the knob connector and the contact connector are rotatively connected to the fastening bracket, and rotation centers of the knob connector and the contact connector are collinear. The transmission component is configured to implement power transmission between the knob connector and the contact connector. The trip unit is configured to receive a switch-off signal, to implement tripping of the trip unit and the cradle. The transmission component is driven to move by using the cradle, to separate the movable contact from the static contact, so that the switch is switched off.

Power mechanism, switch, power conversion apparatus, and power supply system

A photovoltaic system includes at least one first direct current module, an electromagnetic apparatus, a direct current switch-on/off apparatus, and a second direct current module. First connection ends of all first direct current modules in the at least one first direct current module are connected in parallel and then connected to a first connection end of the electromagnetic apparatus, a second connection end and a third connection end of the electromagnetic apparatus are connected to a first connection end of the second direct current module by using the direct current switch-on/off apparatus, and second connection ends of all the first direct current modules are connected in parallel and then connected to a second connection end of the second direct current module. The electromagnetic apparatus is configured to control the direct current switch-on/off apparatus to disconnect a loop between each first direct current module and the second direct current module.

Photovoltaic system and direct current overcurrent protection apparatus

A contact apparatus includes a base body, two fixed contacts, and a moving contact component. The base body has an inner cavity. The two fixed contacts are fastened to the base body at intervals and extend into the inner cavity of the base body. The moving contact component includes a pushing member and a moving contact. The pushing member is movably disposed through the base body. The moving contact is mounted on the pushing member and is located in the inner cavity of the base body. The pushing member is configured to drive the moving contact to move, so that the moving contact is in contact with or is separated from the two fixed contacts.

Contact apparatus, electromagnetic switch, onboard charger, and new energy vehicle

A rotary switch includes an operating mechanism, an on-off apparatus, and a tripping component. The operating mechanism includes an energy storage component and a drive component. The drive component is in driving connection with the energy storage component and the on-off apparatus. The energy storage component includes a latch and an energy storage spring that cooperates with the latch. The energy storage spring can be connected to the latch and the drive component in a snap-fit manner, such that rotation of the drive component stores energy in the energy storage component. Rotation of the drive component also drives the on-off apparatus to an on position. The latch the tripping component interact such that the latch locks or unlocks the energy storage spring.

Rotary switch

A remote switch-off mechanism and a rotary switch relates to the field of electrical technologies. A housing, an energy storage component, and a tripping component are provided. The energy storage component includes a latch, an energy storage spring, a rotating shaft, and an energy storage panel connected to the rotating shaft, an abutting portion is disposed on the energy storage panel, a first end of the energy storage spring is clamped to the housing, and a second end of the energy storage spring abuts against the abutting portion. The latch includes a hinged portion hinged to the housing, a limiting portion for limiting the second end of the energy storage spring, and a tripping portion that cooperates with the tripping component, and an elastic member is disposed between the latch and the housing, so that the tripping portion has a trend of moving toward the tripping component.

Remote switch-off mechanism and rotary switch

An electromagnetic switch, including a driving apparatus and a contact apparatus. The contact apparatus includes a moving contact assembly, a chamber, and two spaced fixed contacts disposed on a top part of the chamber. The moving contact assembly includes an insulating part, a push rod, a moving contact, and an elastic part. One end of the push rod is mounted on the driving apparatus, and the other end of the push rod is mounted on the insulating part. The moving contact is mounted on one side that is of the insulating part and that is back to the push rod. The elastic part is clamped between the insulating part and the moving contact, so that the moving contact is in contact with or separated from the pair of fixed contacts under the action of the push rod.

Contact apparatus and electromagnetic switch

A contact apparatus includes a fixed contact and a moving contact component. The moving contact component includes a push rod, a contact bracket, an insulated sleeve, a moving contact, and a contact spring. The insulated sleeve is fixedly sleeved on a first end of the push rod, a second end of the push rod is configured to connect a drive apparatus, the contact bracket is fixedly sleeved on the insulated sleeve, the moving contact and the contact spring are both flexibly sleeved on the insulated sleeve, the contact spring elastically abuts between the moving contact and the contact bracket, the moving contact and the fixed contact are disposed relative to each other in an extension direction of the push rod, and the moving contact can be driven by the push rod to be connected to the fixed contact.

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Shanghai, China

Xiaokang Tian