Abstract: A battery includes a casing assembly which includes a terminal post and a first casing. The first casing includes a first casing portion and a second casing portion connected to the first casing portion. The first casing portion protrudes from the second casing portion to define a receiving space. The terminal post is fixed to the first casing portion and partially received in the receiving space. A battery including the battery casing assembly is further provided.

Abstract: A battery includes a battery cell and a casing assembly for receiving the battery cell. The battery cell includes a first electrode tab. The battery further includes an insulating member and a conductive member, the insulating member is connected between the casing assembly and the conductive member. The casing assembly defines a first through hole, and the insulating member defines a second through hole connected to the first through hole. The first electrode tab is electrically connected to the conductive member. A power consuming device including the battery is further provided. The conductive member of the present disclosure substitutes for the terminal post of existing art, increasing the energy density of the battery.

Abstract: The present disclosure provides an electrode plate, a battery cell, and a battery. The electrode plate includes a current collector, a plurality of first electrode tabs, and a plurality of second electrode tabs. The current collector has first and second sides and the first electrode tabs are coupled to the current collector and protrude from the first side. The second electrode tabs, also coupled to the collector, protrude from the second side. The first and second electrode tabs on the electrode plate being arranged on opposite sides of the current collector reduce the internal resistance of the electrode plate, and the energy output efficiency of the electrode plate is improved. The accumulation of heat when the electrode plate is working is reduced. Energy is output at both sides of the electrode plate, which improves the performance of the electrode plate.

Abstract: An electrode plate for a lithium battery includes a composite current collector, a first active material layer, and a first electrode tab. The composite current collector includes a polymer layer and first metallic layer thereon. The first active material layer is disposed on a surface of the first metallic layer facing away from the polymer layer. The first active material layer defines a first receiving groove at an edge of the first active material layer. The first electrode tab is received in the first receiving groove, and is electrically connected to the first metallic layer. The thickness of the first electrode tab can be varied according to the electrical resistance desired. Thus, a high resistance of the first electrode tab is avoided.

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 battery includes a battery cell and a terminal post. The first casing includes a first arc sidewall and a flat sidewall connected to the first arc sidewall and the first sidewall. The terminal post is disposed on the flat sidewall. Instead of disposing the terminal post on top of the battery, increased thickness of the battery due to the terminal post is avoided in the present disclosure. The internal space of an electrode device can be fully utilized. In addition, it can prevent the terminal post from occupying the top of the battery and decreasing the number of the electrode plates. Thus, the present disclosure can avoid the reduce of the number of the electrode plates and increase the energy density of the battery.

Abstract: A separator includes a porous substrate and a first coating located on at least one surface of the porous substrate. The first coating includes a first polymer binder and first inorganic particles, and the first polymer binder comprising core-shell structured particles. 0.3×Dv50 of the first polymer binder?Dv50 of the first inorganic particles?0.7×Dv50 of the first polymer binder. Dv50 represents a particle size which reaches 50% of a cumulative volume from a side of small particle size in a granularity distribution on a volume basis The first inorganic particles are used in the first coating, ensuring that the first polymer binder has a bonding function, electrolyte transport is promoted, and the rate performance of the electrochemical device is improved.

Abstract: A negative electrode material includes a silicon-based material, where a particle of the silicon-based material includes at least one recessed portion, and the recessed portion is 50 nm to 20 ?m in width, and 50 nm to 10 ?m in depth. The recessed structure leaves room for the silicon-based material to swell, thereby solving the problem of large volume swelling of the silicon-based material. In addition, when the silicon-based material with the recessed structure is composited with a carbon material, a conductive agent, and the like to form a negative electrode plate, small particles of the carbon material and the conductive agent are embedded into the recessed portion of the silicon-based material, solving the problem of low compacted density of the silicon-based negative electrode material with a recessed structure, and compensating for the low volumetric energy density of the recessed structure.

Abstract: A negative electrode plate includes: a current collector; and a negative electrode framework located on the current collector, where the negative electrode framework includes at least a first negative electrode framework layer and a second negative electrode framework layer, the first negative electrode framework layer is located between the current collector and the second negative electrode framework layer, and a porosity of the first negative electrode framework layer is higher than a porosity of the second negative electrode framework layer. With this design, side reactions between lithium metal and an electrolyte can be reduced, formation of lithium dendrites can be inhibited, and drastic swelling and contraction of the negative electrode plate in volume due to intercalation and deintercalation of lithium ions can be greatly alleviated or even eliminated, thereby improving safety and stability of the electrochemical apparatus.

Abstract: An electrochemical device includes a negative electrode plate including a negative current collector provided with a negative active material layer and a positive electrode plate including a positive current collector provided with a positive active material layer. The positive active material layer includes a first region. The first region includes a second region and a third region that does not overlap the second region by any area. A first insulation layer is disposed on a surface of the second region. The negative active material layer includes a fourth region facing towards the third region. An area S2 mm2 of the second region and an area S1 mm2 of the first region satisfy: S2<S1?1.5S2, and a ratio CB of a unit-area capacity of the fourth region to a unit-area capacity of the third region is greater than or equal to 1.1.

Abstract: An electrode assembly includes an electrode subassembly forming by winding a first electrode plate and a second electrode plate. The first electrode plate includes a first electrode plate unit. The first electrode plate unit includes a bipolar current collector, a first active layer, and a second active layer. The bipolar current collector is disposed between the first active layer and the second active layer. The first active layer is electrically connected to the second active layer. The second electrode plate includes a composite current collector, a third active layer, and a fourth active layer. The composite current collector is disposed between the third active layer and the fourth active layer. The third active layer is electrically insulated from the fourth active layer. The disclosure further provides a battery including the electrode assembly.

Abstract: An impact-proofed battery includes a packaging film, an electrode assembly received in the packaging film, tabs extending from an end portion of the electrode assembly, and insulating layers. Each tab includes a connecting region, a packaging region, and an exposed region connected in the order written. The connecting region is electrically connected to the electrode assembly, and the exposed region is exposed from the packaging film. Each insulating layer includes a packaging portion and a protective portion connecting to the packaging portion. The packaging portion covers the packaging region and is between the packaging film and the packaging region. The protective portion is between the connecting region and the packaging film, and an area of the protective portion is greater than an area of the connecting region. The disclosure also provides a device using the battery.

Abstract: A composite electrode plate of increased robustness and with better electrical properties for incorporation in a battery cell includes a composite current collector, a positive active material layer, a negative active material layer, a first isolation layer, and a second isolation layer. The composite current collector is disposed between the positive active material layer and the negative active material layer. The first isolation layer connects to a surface of the positive active material layer away from the composite current collector. The second isolation layer connects to a surface of the negative active material layer away from the composite current collector.

Abstract: An electrode assembly includes a cathode electrode plate, an anode electrode plate, and a separator disposed between the cathode electrode plate and the anode electrode plate. At least one of the cathode electrode plate and the anode electrode plate is an electrode plate which includes a current collector and a first conductive connector. The current collector includes an insulating layer having opposite side surfaces, a first conductive layer, a second conductive layer, and two electrode active substance layers. The first conductive layer and the second conductive layer are arranged on opposite side surfaces, and the two electrode active substance layers are coated onto the first conductive layer and the second conductive layer. The first conductive connector electrically connects the first conductive layer and the second conductive layer. The electrode assembly is formed by coiling the cathode electrode plate, the separator, and the anode electrode plate.

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: The present disclosure provides an electrode plate, a battery cell, and a battery. The electrode plate includes a current collector, a plurality of first electrode tabs, and a plurality of second electrode tabs. The current collector has first and second sides and the first electrode tabs are coupled to the current collector and protrude from the first side. The second electrode tabs, also coupled to the collector, protrude from the second side. The first and second electrode tabs on the electrode plate being arranged on opposite sides of the current collector reduce the internal resistance of the electrode plate, and the energy output efficiency of the electrode plate is improved. The accumulation of heat when the electrode plate is working is reduced. Energy is output at both sides of the electrode plate, which improves the performance of the electrode plate.

Abstract: The present application is related to an electrolyte and a lithium-ion battery containing the same, wherein the electrolyte comprises lithium salt, a non-aqueous organic solvent and additives, the non-aqueous organic solvent comprising a carboxylate compound, and the additives comprising a fluoro-ether compound and a dinitrile compound comprising an ether bond. The electrolyte applied to the lithium-ion battery, particularly to an irregular-shaped lithium-ion battery, can improve the high temperature storage performance, the high temperature cycle life performance and the rate performances of the lithium-ion battery.

Abstract: A surface modified lithium titanate and preparation method thereof is provided. In the surface modified lithium titanate, the deactivating groups distributed on the surface of the lithium titanate are —O—P—RR?R?, —O—P—(OR)R?R?, —O—P—(OR)(OR?)R?, and —O—P—(OR)(OR?)(OR?), where R, R? and R? are identical or different C1˜C8 alkyl or alkenyl groups. The deactivating groups are bonded to the lithium titanate via a bond or a bridge. The exemplary surface modified lithium titanate can effectively lower its catalytic activity, reduce the gassing of lithium ion batteries, and therefore improve the high temperature storage and high temperature cycle performance of lithium titanate batteries. The exemplary preparation method is simple, has great repeatability, a low cost, low pollution to the environment, and is suitable for industrial production.

Abstract: The present disclosure provides a lithium ion secondary battery and electrolyte solution thereof. The electrolyte solution of the lithium ion secondary battery includes a nonaqueous organic solvent, and a lithium salt dissolved in the nonaqueous organic solvent. The nonaqueous organic solvent includes a dicyano ester compound of a structure shown by Formula I, Formula II, or Formula III. Formula I represents dicyano carbonate ester compounds, Formula II represents dicyano sulfite ester compounds, Formula III represents dicyano sulfate ester compounds, and the value n is an integer between 1 and 4. The lithium ion secondary battery according to the present disclosure includes the aforementioned electrolyte solution. At a working voltage of 4.3 V or higher, the lithium ion secondary battery according to the present disclosure can effectively suppress the oxidation of the electrolyte solution and improve the storage performance of the lithium ion secondary battery at high temperature.

Abstract: A surface modified lithium titanate and preparation method thereof is provided. In the surface modified lithium titanate, the deactivating groups distributed on the surface of the lithium titanate are —O—P—RR?R?, —O—P—(OR)R?R?, —O—P—(OR)(OR?)R?, and —O—P—(OR)(OR?)(OR?), where R, R? and R? are identical or different C1˜C8 alkyl or alkenyl groups. The deactivating groups are bonded to the lithium titanate via a bond or a bridge. The exemplary surface modified lithium titanate can effectively lower its catalytic activity, reduce the gassing of lithium ion batteries, and therefore improve the high temperature storage and high temperature cycle performance of lithium titanate batteries. The exemplary preparation method is simple, has great repeatability, a low cost, low pollution to the environment, and is suitable for industrial production.