Abstract: A battery electrode plate includes a current collector and an electrode active layer disposed on at least one surface of the current collector, where the electrode active layer includes an active material, a solid electrolyte, a binder, and a conductive agent. DV50 of the active material is X, and DV50 of the solid electrolyte is Z, where X:Z is from 5 to 30; and based on a mass of the electrode active layer, a mass percentage of the solid electrolyte is M, where 0.3%?M?5%.

Abstract: Compact reliable connectors and electronic systems thereof are provided. An electronic system includes a receptacle connector configured for mounting on a circuit board, and a plug connector configured for mating with the receptacle connector. The plug connector includes flexible cables directly held by a housing and secured to the housing by latching members. The receptacle connector includes conductive elements disposed in rows. The conductive elements in different rows have tail ends offset in both a mating direction and a vertical direction, and mating ends offset in a longitudinal direction. Techniques described herein enable the connectors to fit in a limited space, provide reliable interconnections in a harsh environment such as one presented by an automobile, and support high voltages such as might be used in a battery management system (BMS).

Abstract: Provided are a fault diagnosis apparatus and method based on fluorescence multivariate correction analysis of transformer oil, relating to the field of transformer fault diagnosis technology. Thus, the problem of large volume and weight of the apparatus, high costs, and inconvenience to use caused when in the related art, a fluorescence spectrometer is directly used to acquire the fluorescence spectrum of transformer oil is solved. The monochromatic excitation light of an optimal excitation wavelength generated by a fluorescence excitation source is used to excite the transformer oil in a fluorescence excitation detection apparatus to generate fluorescence. The fluorescence excitation detection apparatus generates the fluorescence according to the input monochromatic excitation light and inputs the fluorescence to a fluorescence signal acquisition and analysis apparatus.

Abstract: Embodiments of the present disclosure disclose a method for calculating eddy current loss of a transformer, a storage medium and a device. The calculated eddy current loss of the transformer obtained by the method is relatively accurate, and the problem that in the relevant art, a coil temperature field cloud diagram under rated capacity of the transformer is influenced by electric conductivity of an iron core, so that the calculated eddy current loss is inaccurate is solved.

Abstract: A method for charging a battery includes charging the battery with a charging current at a constant current during an mth charge and discharge cycle; a first state of charge SOC1 of the battery when the constant current charging phase in any one charge and discharge cycle ends is the same as a standard state of charge SOC0, SOCb?SOC0?SOCa+k. SOCa is a state of charge or a preset value of the battery at the end of the constant current charging phase during an nth charge and discharge cycle, SOCb is a state of charge or a preset value of the battery at the end of the constant current charging phase during an (m?1)th charge and discharge cycle, SOCb?SOC0?SOCa+k, 0?k?10%, and SOCa+k?100%.

Abstract: A negative electrode plate and an electrochemical apparatus and electronic device including the same. A temperature corresponding to a peak height of the first peak on a DTG curve of the negative electrode plate is higher than 350° C.; and the negative electrode plate includes a negative electrode active material layer, the negative electrode active material layer includes a negative electrode active material, and an active specific surface area of the negative electrode material layer is greater than or equal to K·25 cm2/g, where K represents a correction parameter, K=15 m/Dv50, and Dv50 represents a median particle size of the negative electrode active material.

Abstract: A method of charging a battery, including: in an mth charge and discharge cycle, constant-current charging a battery to a first cut-off voltage Um at a charging current, where m is any two or more integers of 1, 2, 3, . . . , x, and Um has different values in at least two charge and discharge cycles. The method shortens fully charged time of a battery and further ensure that phenomena of lithium precipitation and overcharge do not occur on the battery, thereby prolonging a service life of the battery.

Abstract: A battery charging method is provided, including: constant-current charging the battery with a first charge current I1 to a first voltage U1 and constant-voltage charging the battery with the first voltage U1 to a first charge cut-off current I1? (S1); constant-current charging the battery with the first charge current I1 to a second voltage U2, where U2 is a limited charge voltage of the battery, and U2>U1 (S2); and constant-current charging the battery with a second charge current I2 to a third voltage U3 and constant-voltage charging the battery with the third voltage U3 to a second charge cut-off current I2?, where U3>U2, I2<I1, and I1??I2? (S3). An electronic apparatus and a medium are provided, which can shorten the time of a battery being at high voltage, thus alleviating capacity decay of the battery during charge-discharge cycles.

Abstract: An electrochemical apparatus includes an electrode assembly, where the electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator for separating the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector, a positive electrode active material layer, and a non-active material layer. The positive electrode active material layer is formed on a surface of the positive electrode current collector, and the non-active material layer is formed on a surface of the positive electrode active material layer away from the positive electrode current collector. In a first direction, the non-active material layer has a thickness of 1 µm to 20 µm, where the first direction is a thickness direction of the positive electrode current collector. A diffusion rate of lithium ions in the non-active material layer is less than that in the positive active material layer.

Abstract: A charging method for charging a battery, including the following steps: obtaining a lithium deposition potential of the anode; obtaining a first charging current In at different states of charge (SOC) during an nth charge and discharge cycle based on the lithium deposition potential of the anode, the n is an integer greater than or equal to 0; and during an mth charge and discharge cycle, charging the battery with a second charging current Im, m is an integer greater than n, and Im=k1×In, 0.5?k1?1. The present application also provides an electronic device and a storage medium. The above-mentioned charging method, electronic device and storage medium can quickly charge the battery.

Abstract: A method for charging a battery, and electronic device using the method, includes charging the battery with a first charge current Im at constant current in a mth charge-discharge cycle of the battery, wherein the battery has a first cut-off voltage V1 when the constant current charging stage of the battery is cut off in the mth charge-discharge cycle. The first charge current Im is calculated according to a formula Im=In+k×In, where, 0<k?1, In is the charging current of the constant current charging stage of the battery or another battery identical to the battery in the nth charge-discharge cycle, or In can be a preset value, n is an integer and is greater than or equal to 0, and m is an integer greater than n, the value of k is not the same in at least two charge-discharge cycles of the battery.

Abstract: A method of a charging battery includes the following steps: charging the battery with a first charging current in an nth charge and discharge cycle, where n is an integer greater than or equal to 0; and charging the battery with a second charging current in an (n+m)th charge and discharge cycle, where m is a preset integer greater than or equal to 1, Ib=k1×Ic, 0.5?k1?1, and Ic is a third charging current, where the third charging current is a smaller one of a first maximum charging current and a second maximum charging current in a same state of charge. This application further provides an electronic apparatus and a storage medium.

Abstract: An electrochemical apparatus includes a positive electrode plate. The positive electrode plate includes a positive electrode current collector, a positive electrode active material layer, and a positive electrode coating layer. The positive electrode current collector includes a first zone, a second zone, and a third zone. The positive electrode active material layer includes a first portion, a second portion, and a third portion that are disposed in the first zone, the second zone, and the third zone, respectively. The positive electrode coating layer includes a fourth portion and a fifth portion that are disposed in the first zone and the second zone, respectively. Combined impedance of the first portion and the fourth portion is greater than impedance of the third portion, and combined impedance of the second portion and the fifth portion is greater than the impedance of the third portion.

Abstract: A charging method for battery, including: in an n-th charging process, charging a first battery to a charge cut-off voltage Un and a charge cut-off current In in a first charging manner; then, leaving the first battery standing, and obtaining an open-circuit voltage OCVn of the first battery at a standing time of ti; in an m-th charging process and subsequent charging processes, charging the first battery to the charge cut-off voltage Un and the charge cut-off current In in the first charging manner; then, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, continuing to charge the first battery that has been standing in a second charging manner until the charge cut-off current of the first battery is a first current Im, where Im=(Un?k×OCVn?(1?k)×OCVm)/(Un?OCVm)×In, and 0<k?1.

Abstract: A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage Un in a charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn, of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the charging manner, where m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to a first charge cut-off voltage Um+1 in the charging manner, where Um+1=Un+k×(OCVn?OCVm), and 0<k?1.

Abstract: A charging method for battery. In an n-th charging process, charging a first battery to a charge cut-off voltage Un in a first charging manner, where n is a positive integer; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the first charging manner, where m is a positive integer, and m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, continuing to charge the first battery standing in a second charging manner to a first voltage U?m, where U?m=Un+k×(OCVn?OCVm), and 0<k?1.

Abstract: A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage Un in a first charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the first charging manner; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to the charge cut-off voltage Un in the first charging manner and then continuing to charge the first battery to a first voltage Um+1 in a second charging manner.

Abstract: An electrode plate includes: a current collector, including, in a width direction, a first edge region, a second edge region, and a middle region located between the first edge region and the second edge region; a first coating layer, including a first portion and a second portion disposed on the first edge region and the second edge region respectively; and a second coating layer. A part of the second coating layer is disposed on the middle region, another part of the second coating layer is disposed on the first coating layer. The second coating layer includes an active material. A first bonding force between the first portion and the first edge region and a second bonding force between the second portion and the second edge region are both greater than a third bonding force between the second coating layer and the middle region.

Abstract: An electrode plate includes: a current collector; a first coating applied onto the current collector includes an active material, and the first coating includes a first edge part, a middle part, and a second edge part sequentially in a width direction of the current collector; and a second coating, including a first part disposed on the first edge part and a second part disposed on the second edge part. A first bonding force is exerted by a surface of the first part that is away from the first edge part. A second bonding force is exerted by a surface of the second part that is away from the second edge part. A third bonding force is exerted by a surface of the middle part that is away from the current collector. Both the first bonding force and the second bonding force are greater than the third bonding force.

Abstract: An electrochemical apparatus includes an electrode plate including a current collector, a first coating layer, and a second coating layer. The first coating layer is provided between the current collector and the second coating layer. The second coating layer includes a first active material. R2*d/D<R1, wherein R1 refers to a resistance of the first coating layer, R2 refers to a resistance of the second coating layer, d refers to a thickness of the first coating layer, D refers to a thickness of the second coating layer, R2 and R1 are measured in ohms, and D and d are measured in microns.