Abstract: A battery exchange system and a batteries providing method thereof are disclosed. The battery exchange system is configured to perform the method that includes: receiving a request to exchange a target number of batteries; grouping a plurality of batteries in the battery exchange system based on the target number of batteries into a plurality of battery groups; calculating a plurality of scores for the plurality of battery groups based on a plurality of weights and a plurality of characteristic parameters; and selecting an optimal battery group with the optimal score among the plurality of battery groups to provide the target number of batteries based on the plurality of scores. In this way, issues caused by improper battery selection can be effectively improved.

Abstract: A power converter is provided. The power converter includes first to fourth switches electrically connected in series, a flying capacitor and a controller. Positive and negative terminals of the flying capacitor are electrically connected to the second and third switches respectively. The controller operates the first and fourth switches to perform a first complementary switching with a first dead time, and operates the second and third switches to perform a second complementary switching with a second dead time. The controller determines to regulate the first or second dead time by detecting a capacitor voltage of the flying capacitor, such that the capacitor voltage of the flying capacitor is maintained within a balance voltage range.

Abstract: A power conversion circuit for driving motor and a control method thereof are provided. The control method includes: comparing a control command with a carrier wave to acquire a PWM signal; identifying whether a phase difference between the output voltage and current falls within a range; if the phase difference falling within the range, determining whether a zero-sequence voltage is positive or negative according to the output voltage and current; injecting the zero-sequence voltage into the control command to acquire a synthesized command, and detecting maximum and minimum voltage values of the synthesized command after a period; according to the zero-sequence voltage determined to be positive or negative, selecting the maximum or minimum voltage value to perform a logic reversal operation; after stopping injecting the zero-sequence voltage, acquiring an output expected value; and comparing the output expected value with the carrier wave for adjusting a duty ratio of PWM signal.

Abstract: A connector is disclosed and includes a main body, a sleeving component, a conductive terminal and a signal terminal. The main body has an opening end and a sleeved end opposite to each other. An electronic device end is matched with the connector through the opening end. The sleeving component is slidably disposed on the sleeved end, and includes a conductive contact portion and a signal contact portion arranged in parallel. The conductive terminal is fixed to the main body for connecting with the conductive contact portion. The signal terminal is fixed to the main body for connecting with the signal contact portion. When the connector is detached from the electronic device end, the sleeving component is displaced relative to the main body, the signal contact portion is separated from the signal terminal, and the conductive terminal end and the conductive contact portion are maintained in an electrical connection.

Abstract: An immersion cooling system is provided. The immersion cooling system includes a box, an upper cover, plural fixing components, plural latches and a link module. The box has an opening upwardly. The upper cover covers the opening. The fixing components are disposed on the box and arranged adjacent to the outer perimeter of the opening. The latches corresponding to the fixing components are disposed on the upper cover. The link module includes plural crossbars corresponding to the latches. The link module moves downwardly close to the upper cover, scroll-wheels of the latches roll along limiting surfaces of corresponding fixing components and press against the upper cover, the upper cover closes the opening to form an airtight space. The link module moves upwardly away from the upper cover, the scroll-wheels are separated away from the limiting surfaces of corresponding fixing components, allows the upper cover to separate from the opening.

Abstract: A speed reducer comprises a transmission shaft, an eccentric wheel, a first wheel assembly, a rotating wheel and a second wheel assembly. The first wheel assembly comprises a first wheel disc and at least one first roller. The at least one first roller is disposed on the inner wall of first wheel disc. The rotating wheel comprises a main body comprising an outer ring structure and a concave structure. The outer ring structure comprises at least one first tooth. The at least one first tooth is in contact with the corresponding first roller. At least one second roller is disposed within the concave structure. The second wheel assembly comprises a second wheel disc and at least one second tooth. The at least one second tooth is disposed on an outer periphery of the second wheel assembly. The at least one second tooth is in contact with the corresponding second roller.

Abstract: An electrical connector includes a housing having a front end and a rear end, an insulator including a tongue portion disposed at the front end and a base disposed at the rear end, and plural terminals including plural ground terminals, plural power terminals and plural signal terminals. Each of the plural terminals has a first contact portion, a second contact portion and a connection portion connecting the first contact portion with the second contact portion. The first contact portions are disposed on surfaces of the tongue portion in a widthwise direction perpendicular to a direction from the front end to the rear end, and the second contact portions are extended out from the base. Widths in the widthwise direction of the second contact portions of the plural ground terminals and the plural power terminals are larger than a width of the first contact portion respectively thereof.

Abstract: A circular current suppression method, a switch control device, and a power conversion system are disclosed, which convert a difference between a voltage converted from a common-mode current of several input currents of a power factor corrector and a bus-voltage difference into a reference current, convert a difference between a reference voltage and a total voltage into a total DC current, and add cosine even-numbered-harmonic components of the reference current based on the total DC current, a target current, and one of several input currents to calculate a compensation current that is converted into a voltage as one of at least one switching command output to the power factor corrector, thereby suppressing the circular current in a configuration of parallel power conversion modules.

Abstract: The embodiments of the present application provide a detecting method and a power transmitter in a wireless charging system. The power transmitter includes: a signal sampling circuit, configured to sample a signal generated by an oscillation circuit of the power transmitter; and a control circuit, coupled to the signal sampling circuit, configured to: obtain an oscillation waveform based on the obtained sampled values; perform an integral operation on the oscillation waveform and average the result of the integral operation to obtain an integrated average value; obtain a oscillation frequency of the oscillation waveform; and determine whether there is a foreign object or a power receiver approaching the power transmitter, based on the integrated average value and the oscillation frequency. The power transmitter can effectively improve the accuracy of determining whether there is a foreign object or a power receiver approaching the power transmitter.

Abstract: An inverter assembly is disclosed and includes a base, a contact terminal, an output copper busbar and an elastic component. The output copper busbar is disposed on the base. The output copper busbar includes an output portion configured to electrically connect with the contact terminal. The elastic component is disposed on the base and includes an abutting element, an elastic element and an accommodation seat. The accommodation seat is disposed on the base, the abutting element is connected to the accommodation seat through the elastic element along an axial direction. When the base is docked with the contact terminal, the abutting element of the elastic component abuts against the output portion to attach to the contact terminal, and the contact terminal abuts against the abutting element and the elastic element, so that a restoring force provided by the elastic element keeps the output portion abutting against the contact terminal.

Abstract: A power converter module includes a multilayer printed circuit board, a switching device, a controlling device and a capacitor device. The switching device includes two switching circuit combinations. Each of the switching circuit combinations includes two switching circuits connected in parallel. Each of the switching circuits includes a switching unit. The controlling device is configured for outputting a first control signal and a second control signal to control the switching circuits of the first switching circuit combination and the switching circuits of the second switching circuit combination respectively. The first control signal and the second control signal are out of phase with each other. On a direction, the switching units of the first switching circuit combinations and the switching units of the second switching circuit combinations are alternately arranged, each of a plurality of capacitors of the capacitor device is neighboring to the two adjacent switching units.

Abstract: An adjustable rack assembly, which may be used in a cabinet, includes a rail and a sliding component. The rail extends along a first direction, and includes a rail body, a bent portion and plural positioning grooves. The bent portion protrudes inwardly from an outer edge of the rail body, and the plural positioning grooves are disposed on the bent portion along the first direction. The sliding component includes a sliding body, a limiting portion and a guiding groove. The limiting portion is connected to the sliding body, and the guiding groove and the bent portion are mutually matched. When the sliding component is misaligned with the plural positioning grooves in the first direction, the sliding component is allowed to slide in the first direction. When the sliding component is engaged with the positioning groove, the sliding component is locked on the rail.

Abstract: A magnetic component and a switch power supply device are disclosed. The magnetic component includes a magnetic core and at least three windings, the magnetic core including at least three winding columns, at least one side columns, a first cover plate and a second cover plate opposite to each other, wherein the at least three winding columns are sequentially arranged in adjacent, the first cover plate and the second cover plate are respectively at upper parts or lower parts of the at least three winding columns and the at least one side column to form a closed magnetic flux loop; the at least three windings are wound on the at least three winding columns, respectively; wherein magnetic flux direction of the middle winding column in adjacent three winding columns is opposite to magnetic fluxes direction of the other two winding columns in adjacent three winding columns.

Abstract: The present application provides a learning method for plug-in depth including steps of: (a) utilizing a robot arm to take an electronic component with a plurality of pins; (b) utilizing a first visual device to identify a pin distance; (c) utilizing a second visual device to identify a hole distance; (d) inserting the plurality of pins into the corresponding plurality of holes with a predetermined depth according to the pin distance and the hole distance; (e) determining whether the plurality of pins are inserted into the plurality of holes, performing step (f) when the determination result is satisfied, and performing step (g) when the determination result is not satisfied; (f) recording the predetermined depth and performing the step (a) again; (g) calibrating the predetermined depth and performing the step (a) again; and (h) completing the learning of the plug-in depth after the step (f) is performed multiple times successively.

Abstract: In the initial phase, the master device is configured to disable the connection between the junction device and the last slave device before performing the EtherCAT distributed clock synchronization procedure. After completion, the connection between the junction device and the last slave device is enabled. When a disconnection occurs in a closed loop topology, the junction device can serve to provide a redundant path for forwarding datagrams, thereby achieving cable redundancy. After the disconnection is fixed, the system time delay of each slave device calculated during the initial phase can still be applied without needing to perform again the distributed clock synchronization procedure.

Abstract: An integrated nucleic acid processing apparatus includes a first operation area, a second operation area and a separation wall. The first operation area includes multiple carrying boards for placing objects and reagents for processing nucleic acids in samples, and multiple operation modules for performing operations of nucleic acid processing. The second operation area includes two extraction regions for respectively performing nucleic acid extractions. The separation wall separates the first operation area from the second operation area and includes two openable door sheets spatially corresponding to the two extraction regions. Nucleic acid extraction plates can be moved from the first operation area to the second operation area by means of the carrying boards as the two openable door sheets are opened, and be isolated in the second operation area for performing nucleic acid extractions as the two openable door sheets are closed.

Abstract: A power module of an electric assisted bicycle is disclosed and includes a pedal shaft, a gear-plate-output shaft, a reducer-output shaft and a motor-output shaft. The pedal shaft is arranged along an axial direction. The gear-plate-output shaft includes a first section and a second section arranged in the axial direction. The first section is concentrically sleeved on the pedal shaft through a first one-way bearing along a radial direction. When the pedal shaft is forced to rotate, the gear-plate-output shaft is driven through the first one-way bearing. The reducer-output shaft is concentrically sleeved on an outer surface of the second section through a second one-way bearing along the radial direction. The motor-output shaft is concentrically sleeved on the reducer-output shaft along the radial direction. When the motor-output shaft drives the reducer-output shaft to rotate, the gear-plate-output shaft is driven by the reducer-output shaft through the second one-way bearing.

Abstract: An ORing FET control circuit and method are provided. The circuit includes an ORing FET, a comparator, first, second and third resistors, a first capacitor, a diode and a driving unit. The positive and negative input terminals of the comparator are electrically connected to the input and output voltages. The first resistor, the second resistor, the first capacitor, and the third resistor are electrically connected in series between a reference voltage and a ground terminal sequentially. The reference voltage is lower than a voltage at the positive input terminal. When the input voltage is lower than the output voltage, if a voltage across the ORing FET is larger than a threshold, the comparator outputs a driving signal at low level, and correspondingly the driving unit turns off the ORing FET. The threshold depends on resistances of the first and second resistors.

Abstract: A hot-swappable pump unit (HSPU) and a coolant distribution unit (CDU) using the same are disclosed. The HSPU is connected to a loop inlet element, a loop outlet element and a fixed component of CDU along a matching direction. The HSPU includes a housing, a pump, a pump inlet element, a pump outlet element and a fastening component. The pump inlet element is in communication with the pump by passing through a first lateral wall of the housing. The pump outlet element is in communication with the pump by passing through the first lateral wall. The fastening component is arranged on the housing and configured to engage with the fixed component, to drive the hosing to move along the matching direction. Whereby, the pump inlet element and the loop outlet element are matched and connected, and the pump outlet element and the loop inlet element are matched and connected.