Abstract: The present application discloses a winding shaft fixture, a winding device, and a method for preparing an electrode assembly. The winding shaft fixture includes a clamping mechanism and a tensioning mechanism. The clamping mechanism is used to clamp or release an end of a winding shaft. The tensioning mechanism is connected to the clamping mechanism, and the tensioning mechanism is configured to apply a pulling force to the clamping mechanism when the clamping mechanism clamps the end of the winding shaft, so as to apply the pulling force to the winding shaft. According to the technical solutions of the present application, the winding shaft can be allowed to have a higher winding speed to improve the production efficiency of the electrode assembly.

Abstract: The present application relates to an aqueous positive electrode sheet, including a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer including an aqueous binder, where bond strength AT between the positive electrode active substance layer and the current collector and cohesive CT of the positive electrode active substance layer itself satisfy the following relationship: 1?CT/AT?10. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.

Abstract: Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

Abstract: An electrode assembly and a processing method and apparatus therefor, a battery cell, a battery, and a power consuming device are provided. The processing method includes: applying an adhesive on a preset part of a surface of a member to be coated, the adhesive forming a barrier layer, and the member to be coated including at least one of a cathode plate, a separator, and an anode plate; and winding the cathode plate, the anode plate, and the separator to form an electrode assembly. The barrier layer is located between the cathode active material layer and the anode active material layer adjacent to each other after the winding. The barrier layer blocks at least some ions de-intercalated from the cathode active material layer located on one side of the barrier layer from being intercalated into the anode active material layer located on the other side of the barrier layer.

Abstract: The present application relates to an aqueous positive electrode sheet, which may include a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer may include an aqueous binder, where the porosity of a surface area of the positive electrode active substance layer may be greater than the porosity of an inner area of the positive electrode active substance layer, and the average particle size of the positive electrode active material in the surface area may be greater than the average particle size of the positive electrode active material in the inner area. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.

Abstract: The present application provides an electrode assembly and a processing method and device therefor, a battery cell, a battery and a power consuming device. The electrode assembly comprises: a cathode plate, an anode plate and a separator. The cathode plate is bent M times to form M bent parts in a bent region, a first attachment region is formed on an inner surface of an Nth-bend part of the cathode plate, and a second attachment region is formed on an outer surface of the Nth-bend part; at least one part of an ion blocking layer is attached to the first attachment region, and the ion blocking layer is used for preventing ions deintercalated from the first attachment region from being intercalated into the anode plate adjacent to the first attachment region during charging; and at least one part of a reinforcing layer is attached to the second attachment region.

Abstract: The present disclosure provides a display device. The display device includes a display panel and a bonding object; wherein the display panel is provided with a first bonding pad unit and a plurality of second bonding pad units respectively arranged on two sides of the first bonding pad unit, wherein a height of the first bonding pad unit in a second direction is identical to a height of the second bonding pad unit in the second direction; and the bonding object includes a third bonding pad unit corresponding to the first bonding pad unit, and fourth bonding pad units corresponding to the second bonding pad units, wherein a height of the fourth bonding pad unit in the second direction is less than a height of the third bonding pad unit in the second direction.

Abstract: The present invention provides a separator for a lithium ion battery. The separator includes a substrate, an inorganic coating on at least one surface of the substrate, and an organic coating on at least one surface of the inorganic coating, wherein the coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2. Compared with the prior art, the separator of the present invention can improve the deformation of the lithium ion battery and enhance the expansion force that the lithium ion battery can endure, thereby improving the cycle life of the lithium ion battery. In addition, the present invention also provides a lithium ion battery having the separator of the present invention.

Abstract: There is provided a composite separator for a lithium-ion battery, including a polyolefin substrate and a coating layer containing a binder and inorganic particles formed on a surface of the polyolefin substrate, a hydrogen bond being formed between the binder and the inorganic particles. Also provided are a method for preparing the composite separator for a lithium-ion battery and a lithium-ion battery using the composite separator. The composite separator of the present application increases adhesion force between the substrate and the inorganic particles, thereby reducing detachment of the inorganic particles. By using the composite separator, the product quality of the battery is improved, and the risk of influencing the safety performance of the battery caused by the detachment of the inorganic particles in a production process is reduced.

Abstract: A miniature portable multifunctional infusion device includes a liquid bottle (4) and a film box body (16) secured to a support frame (1). The film box body (16) is respectively provided with a directional input interface (17) and a directional output interface (14) in communication with the liquid bottle (4) and a needle via an infusion pipe. The film box body (16) is installed with an elastic film (27), and a transmission system (31) is arranged at a side of the elastic film (27). The transmission system (31) includes a miniature direct current motor (32) connected to a frequency modulating system (28). The miniature direct current motor (32) is connected to a spiral straightening device (34) via a speed reducer (33), and the spiral straightening device (34) is connected to a reciprocating film propping device (36) via a two-order shaft (43). A truncated cone (39) of the reciprocating film propping device (36) at a front end is in contact with the elastic film (27).

Abstract: The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The preparation method of the lithium-rich electrode plate of the lithium-ion battery comprises steps of: (1) in a protective gas environment, melting a lithium ingot to obtain a melting lithium; (2) in a vacuum environment, heating and drying ceramic particles to obtain dried and anhydrous ceramic particles; (3) in a protective gas environment, adding the dried and anhydrous ceramic particles into the melting lithium, stirring to make them uniformly mixed to obtain a modified melting lithium; (4) in a protective gas environment, uniformly coating the modified melting lithium on a surface of an electrode plate to be lithium rich to form a lithium-rich layer, which is followed by cooling to room temperature to obtain a lithium-rich electrode plate of a lithium-ion battery. The lithium-rich electrode plate is prepared according to the preparation method.

Abstract: The present invention provides a separator for a lithium ion battery. The separator includes a substrate, an inorganic coating on at least one surface of the substrate, and an organic coating on at least one surface of the inorganic coating, wherein the coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2. Compared with the prior art, the separator of the present invention can improve the deformation of the lithium ion battery and enhance the expansion force that the lithium ion battery can endure, thereby improving the cycle life of the lithium ion battery. In addition, the present invention also provides a lithium ion battery having the separator of the present invention.

Abstract: A miniature portable multifunctional infusion device includes a liquid bottle (4) and a film box body (16) secured to a support frame (1). The film box body (16) is respectively provided with a directional input interface (17) and a directional output interface (14) in communication with the liquid bottle (4) and a needle via an infusion pipe. The film box body (16) is installed with an elastic film (27), and a transmission system (31) is arranged at a side of the elastic film (27). The transmission system (31) includes a miniature direct current motor (32) connected to a frequency modulating system (28). The miniature direct current motor (32) is connected to a spiral straightening device (34) via a speed reducer (33), and the spiral straightening device (34) is connected to a reciprocating film propping device (36) via a two-order shaft (43). A truncated cone (39) of the reciprocating film propping device (36) at a front end is in contact with the elastic film (27).

Abstract: The present disclosure provides a preparation method of a porous composite separator, which comprises steps of: (1) a forming process of a porous separator substrate: taking organic particles as a raw material to obtain a porous separator substrate; (2) a coating process of a functional material layer: coating a functional material layer on at least one surface of the obtained porous separator substrate to obtain a porous separator substrate having a functional material layer; (3) a heat treating process: drying the functional material layer and heating the porous separator substrate and the functional material layer on the surface of the obtained porous separator substrate to obtain a porous composite separator. The preparation method can prepare a porous composite separator with an excellent performance in high efficiency and low cost, the porous composite separator has high porosity, high air permeability, high binding performance, high mechanical strength and high thermal stability.

Abstract: The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The preparation method of the lithium-rich electrode plate of the lithium-ion battery comprises steps of: (1) in a protective gas environment, melting a lithium ingot to obtain a melting lithium; (2) in a vacuum environment, heating and drying ceramic particles to obtain dried and anhydrous ceramic particles; (3) in a protective gas environment, adding the dried and anhydrous ceramic particles into the melting lithium, stirring to make them uniformly mixed to obtain a modified melting lithium; (4) in a protective gas environment, uniformly coating the modified melting lithium on a surface of an electrode plate to be lithium rich to form a lithium-rich layer, which is followed by cooling to room temperature to obtain a lithium-rich electrode plate of a lithium-ion battery. The lithium-rich electrode plate is prepared according to the preparation method.

Abstract: The present disclosure provides a composite porous separator and an electrochemical device. The composite porous separator comprises: a composite porous substrate; and a composite porous coating coated on at least one surface of the composite porous substrate. The composite porous substrate comprises a filler A and a polymer matrix, the filler A is at least one selected from a group consisting of inorganic particles and organic particles; the composite porous coating comprises a filler B and an adhesive, the filler B is at least one selected from a group consisting of inorganic particles and organic particles. The electrochemical device has the above composite porous separator. The present disclosure improves the thermal stability of the composite porous separator, and improves the anti-deformation capability and the capacity retention rate of the electrochemical device, and further improves the cycle performance and the low temperature dynamic performance of the electrochemical device.

Abstract: The present disclosure provides an organic/inorganic composite porous separator and a preparation method thereof and an electrochemical device. The organic/inorganic composite porous separator comprises: a porous substrate; and an organic/inorganic composite porous coating coated on at least one surface of the porous substrate; the organic/inorganic composite porous coating comprises inorganic particles, an adhesive and organic particles with at least two swelling degrees, and the organic particles are swollen by a plasticizer. A preparation method of an organic/inorganic composite porous separator is used for preparing the previous organic/inorganic composite porous separator. An electrochemical device comprises the organic/inorganic composite porous separator. The separator can form an excellent interface, thereby reducing the risk of organic particles blocking micro pores, helping to improve the permeability of the separator, and improving the conductivity of the separator.

Abstract: The invention pertains to the technical field of a Li-ion battery, in particular to a Li-ion battery positive plate structure, comprising a current collector, a base diaphragm arranged on the surface of the current collector and a top diaphragm arranged on the surface of the base diaphragm; both the base diaphragm and the top diaphragm respectively comprise an active substance, an adhesive and a conductive additive, wherein, the active substance of the base diaphragm is graphite, while the active substance of the top diaphragm is at least one among silicon, silicon alloy and tin alloy. Compared with the prior art, the Li-ion battery positive plate structure of the invention successfully solves the problem of film removal of silicon anode and alloy anode due to swelling in the process of charging because a graphite anode base diaphragm with buffering function is installed between the top diaphragm with swelling trend.

Abstract: The invention pertains to the technical field of a polymer Li-ion battery, in particular to a polymer Li-ion battery separator, comprising porous substrate, wherein at least one surface of the porous substrate is coated with an inorganic coating and an organic coating; the organic coating, shaped like an island and/or linear distribution, is coated on the surface of the porous substrate and/or the inorganic matter coating.