Abstract: Disclosed is an electric vehicle charging gun, including: a housing, an elastic connector, first cables, and a locking module detachably electrically connected to the elastic connector. The housing is provided with a first cavity where the locking module is disposed, a second cavity where the first cables are disposed, and a first opening which connects the first cavity and the second cavity and where the elastic connector is disposed. The first cables are connected to the elastic connector and a power supply unit. The locking module includes a control switch and an electronic lock integrated together. The control switch controls the electronic lock to lock the electric vehicle charging gun. The electronic lock transmits a feedback signal to the power supply unit through the elastic connector and the first cables, and receives an unlock signal from the power supply unit to unlock the electric vehicle charging gun.

Abstract: Provided are a charging gun cooling system and a charging gun, relating to the technical field of charging guns. In the charging gun cooling system, a head cooling assembly includes a support frame and a cooling cavity, the cooling cavity is provided with a liquid inlet and a liquid outlet, the support frame is configured to accommodate a connection end of a first terminal and a connection end of a second terminal, the cooling cavity is disposed in the support frame and between the first terminal and the second terminal, a liquid inlet pipe communicates with the liquid inlet, a liquid outlet pipe communicates with the liquid outlet, a first cable is laid on the outer surface of the liquid inlet pipe, and a second cable is laid on the outer surface of the liquid outlet pipe.

Abstract: Provided are a liquid cooling system of a charging gun and a charging gun. The liquid cooling system includes a head cooling assembly, a tail cooling assembly, a liquid input pipe and a liquid output pipe. The head cooling assembly includes a cooling pipe assembly. The cooling pipe assembly is connected to a charging terminal of the charging gun. The tail cooling assembly includes a connection box and a first conductive member. One end of the first conductive member is disposed in the connection box. A cable connected to the charging terminal is connected to the first conductive member in the connection box. Another end of the first conductive member is connected to an external power supply. The liquid input pipe extends through the connection box and communicates with the inlet of the cooling pipe assembly. The liquid output pipe communicates with the outlet of the cooling pipe assembly.

Abstract: A sample transport method, applied to a test instrument including a conveyor belt, and a loading platform and a grab position sequentially disposed along a transport direction of the conveyor belt, wherein a plurality of sample holder transport positions are disposed on the conveyor belt; the method including: pushing a first sample holder from the loading platform to a sample holder transport position of the conveyor; when a sample position on the first sample holder moves to the grab position, determining whether the sample position moved the grab position is a target sample position; if so, then determining whether all samples positions on the first sample holder before the target sample holder other than a predetermined number of sample positions have completed testing, wherein the predetermined number is sample position number corresponding to a delay time in outputting information indicating whether a sample needs to be retested.

Abstract: A sample transport method, applied to a test instrument including a conveyor belt, and a loading platform and a grab position sequentially disposed along a transport direction of the conveyor belt, wherein a plurality of sample holder transport positions are disposed on the conveyor belt; the method including: pushing a first sample holder from the loading platform to a sample holder transport position of the conveyor; when a sample position on the first sample holder moves to the grab position, determining whether the sample position moved the grab position is a target sample position; if so, then determining whether all samples positions on the first sample holder before the target sample holder other than a predetermined number of sample positions have completed testing, wherein the predetermined number is sample position number corresponding to a delay time in outputting information indicating whether a sample needs to be retested.

Abstract: The present invention discloses a device for inductively suppressing acid mist from electrowinning. The device comprises a polar plate. A first isolation net and a second isolation net are respectively provided at two sides of the polar plate. Gaps are left between the first and second isolation nets and the two sides of the polar plate respectively. A first isolation piece and a second isolation piece are respectively provided to two sides of a top of the polar plate and are respectively located above the first and second isolation nets. The present invention also discloses a process for inductively suppressing acid mist from electrowinning by using the above device. The acid mist suppressing device and process of the present invention can prevent formation of acid mist during an electrowinning process so that pollution of acid mist can be eliminated and clean production can be realized.