Abstract: The application discloses a battery top cover sheet and a battery. The battery top cover sheet includes a top cover body, an electrolyte filling structure, a boss, and a process groove are arranged on the top cover body, the electrolyte filling structure includes a sinking groove located on an upper surface of the top cover body and a filling port penetrating through the top cover body, the boss is located on a lower surface of the top cover body and arranged around the filling port, and the process groove is arranged on a lower surface of the top cover body and arranged around the boss.

Abstract: The present application discloses a battery cell module and a battery system. The battery cell module includes a plurality of battery cells and a plurality of end covers. Each of the battery cells is provided with one of the end covers, and adjacent two of the end covers are detachably connected to each other, so that the plurality of battery cells are relatively fixed into a group.

Abstract: The present disclosure provides a chassis assembly and a vehicle. The chassis component includes: a chassis provided with a plurality of mounting positions and configured to install a battery module; a quick-release device through which the battery module is installed on the mounting positions, wherein the quick-release device is controlled by a control system; and a voltage electrical connecting assembly electrically connected to the battery module, wherein the voltage electrical connecting assembly is controlled by the control system. The vehicle includes the chassis assembly.

Abstract: A battery pack and a vehicle are provided. The battery pack includes a base plate assembly, a side beam assembly, and at least one battery cell group. The side beam assembly is disposed at an outer periphery of the base plate assembly. The side beam assembly and the base plate assembly define an accommodating cavity, and the accommodating cavity includes at least one installation area. The installation area is provided with the battery cell group. The battery cell group includes a plurality of battery cells, and the plurality of battery cells are fixedly disposed on the base plate assembly. According to the battery pack and the vehicle, each battery cell is fixedly disposed on the base plate assembly in the installation area. The plurality of the battery cells disposed in installation area defines a battery cell group.

Abstract: The present application provides a battery module and an electric vehicle. The battery module includes a case, a longitudinal beam, and a tray. The case is provided with at least one exhaust port. The longitudinal beam is disposed in the case and is abutted against a bottom surface of the case to partition accommodating areas in the case on both sides of the longitudinal beam along a width direction. The tray is disposed in one of the accommodating areas and is configured to install a battery cell. A through hole opposite to an end of the battery cell is defined on the tray, the tray is spaced from the bottom surface of the case to define a pressure relief cavity, the through hole and the exhaust port are respectively communicated with the pressure relief cavity.

Abstract: The present application discloses a battery cell module and a battery system. The battery cell module includes a plurality of battery cell assemblies. Each of the battery cell assemblies includes a battery cell, an end cover, and a base. A first end of the battery cell is connected to the end cover, and a second end of the battery cell is connected to the base. End covers of adjacent ones of the battery cell assemblies are detachably connected to each other, and bases of the adjacent ones of the battery cell assemblies are detachably connected to each other.

Abstract: The present application provides a battery box body and a battery module. The battery box body incudes a base plate assembly and a side beam assembly, where the base plate assembly is divided into a first region and a second region. Where a first pressure relief cavity is defined by an outer plate and an inner plate of the base plate assembly, the battery cells are occluded on a portion of a cavity wall of the first pressure relief cavity. A second pressure relief cavity is defined by the support plate and the inner plate, and other portion of the cavity wall of the first pressure relief cavity is communicated with the second pressure relief cavity. A third pressure relief cavity is defined by an inner cavity of the side beam assembly, the side beam assembly is installed with a pressure relief valve communicated with the third pressure relief cavity.

Abstract: The present disclosure discloses a battery module and a wire harness isolation plate disposed on the battery cell module and including a plurality of battery cells and a plurality of busbars, each of the busbars connect with at least two battery cells in the battery cell module, and a first electrode and a second electrode of each of the battery cells is disposed on a same side of the battery cell; the wire harness isolation plate includes a first fixed unit including a first fixed plate, a first side of the first fixed plate is configured to position the busbar, a second side of the first fixed plate is configured to position an end of the battery cell provided with the first electrode and the second electrode and to expose a part of the first electrode and a part of the second electrode of the battery cell.

Abstract: A cover plate of a cylindrical battery and the cylindrical battery are provided by the present application. The cover plate of the cylindrical battery includes a pole column. A bottom of the pole column is connected with a current collecting plate. The pole column is sleeved with a sealing ring. A first insulating element and a cover slip are sequentially sleeved on an outside of the sealing ring along a vertical direction. The first insulating element insulates the current collecting plate from the cover slip.

Abstract: An insulation bracket and a battery module are provided. The insulation bracket is disposed on a battery cell group including a plurality of battery cells. A first electrode and a second electrode of each of battery cells are disposed on a same side of battery cell. The insulation bracket includes a plurality of insulation plates connected to each other. Each of insulation plates is disposed a corresponding one of battery cells, and is provided with a limiting groove. The limiting groove of each of insulation plates covers an end of the corresponding one of battery cells. A wall of the limiting groove of each of insulation plates is configured to position the corresponding one of battery cells, and a part of the first electrode and a part of the second electrode of each of battery cells are exposed from the insulation plate corresponding to the battery cell.

Abstract: The present application relates to the field of battery technologies, for example, to a battery, a battery module, and a battery pack. The battery includes a housing, a terminal pole column, and an upper plastic member. A first through hole is defined on a top cover of the housing. The terminal pole column passes through the first through hole. The upper plastic member is disposed above the top cover of the housing. The terminal pole column is capable of passing through the upper plastic member and bending outward to form a flange, and the terminal pole column abuts against the upper plastic member, and an upper top surface of the terminal pole column and an upper top surface of the upper plastic member are flush with each other.

Abstract: A battery module and an electric vehicle are provided by the present application. The battery module includes a case body and at least one tray; at least one exhaust port is defined in the case body, at least one tray mounting cavity is defined in the case body, and the case body includes a first mounting surface surrounding a periphery of the tray; the tray is disposed in the tray mounting cavity to divide the tray mounting cavity into a cell accommodating cavity located above the tray and a pressure relief cavity located below the tray, the tray is provided with through holes facing battery cells, the pressure relief cavity is communicated with the through holes and the exhaust port, respectively, and the cell accommodating cavity is configured to accommodate the battery cells; the tray includes a second mounting surface, and the second mounting surface abuts against the first mounting surface.

Abstract: The present application discloses a fusing device and a power battery. The fusing device includes: a conductive sheet and an insulating connection component, wherein a clearance portion is arranged on the conductive sheet, and the conductive sheet defines a fusing portion at the clearance remaining position on at least one side of the clearance portion; and the insulating connection component is provided with a connection portion and a load bearing portion, the insulating connection component is connected to the conductive sheet through the connection portion, the load bearing portion is located below the fusing portion, and molten beads formed after the fusing portion is blown are enabled to fall into the load bearing portion.

Abstract: The present disclosure provides a chassis assembly and a vehicle. The chassis component includes: a chassis provided with a plurality of mounting positions and configured to install a battery module; a quick-release device through which the battery module is installed on the mounting positions, wherein the quick-release device is controlled by a control system; and a voltage electrical connecting assembly electrically connected to the battery module, wherein the voltage electrical connecting assembly is controlled by the control system. The vehicle includes the chassis assembly.

Abstract: Provided in the present application is a cathode material, a preparation method thereof and a lithium-ion battery, in which the cathode material includes a manganese-containing cathode active substance core, a fluorine-doped carbon coating layer, and a lithium ferrate shell layer, sequentially from inside to outside.

Abstract: A modified lithium manganese iron phosphate positive electrode material and a preparation method and an application thereof are provided. The modified lithium manganese iron phosphate positive electrode material includes a doped lithium manganese iron phosphate core; and a coating layer disposed on a surface of the doped lithium manganese iron phosphate core. The doped lithium manganese iron phosphate core comprises an Nb element, and the coating layer comprises LiNbO3 and Nb2O5.

Abstract: This disclosure provides a composite positive electrode material and a preparation method and application thereof. The method includes the following steps: (1) mixing a first lithium source, a manganese source, an iron source, and a phosphorus source with a solvent to obtain a lithium manganese iron phosphate precursor, performing thermal treatment on the lithium manganese iron phosphate to obtain lithium manganese iron phosphate powder, mixing a nickel cobalt manganese hydroxide with a second lithium source, and performing sintering treatment to obtain a nickel-cobalt-lithium manganese oxide positive electrode material; (2) mixing the lithium manganese iron phosphate powder and lithium nickel cobalt manganese oxide positive electrode material obtained in step (1) with a metal-organic framework (MOF) material, and stirring to obtain mixed powder; and (3) performing calcination treatment on the mixed powder obtained in step (2) to obtain the composite positive electrode material.

Abstract: An electrode thickness control method and a control system is provided. The control method includes: obtaining an initial thickness and a target thickness of a to-be-rolled electrode; controlling, according to the initial thickness and the target thickness, a target device to roll the to-be-rolled electrode; obtaining first thickness change data of the to-be-rolled electrode, second thickness change data of a rolled electrode formed through rolling, and current rolling speed data of the target device; and adjusting, according to the first thickness change data, the second thickness change data, or the current rolling speed data, a current rolling pressure or a current rolling temperature of the target device, to cause a thickness of the rolled electrode to reach the target thickness.

Abstract: Specifically disclosed in the present application is a lithium iron manganese phosphate cathode material, preparation method and application thereof. The lithium iron manganese phosphate cathode material includes a lithium iron manganese phosphate substrate and a coating layer on a surface of the lithium iron manganese phosphate substrate; the coating layer includes carbon quantum dots containing amino groups; and a mass ratio of manganese ions to carbon quantum dots containing amino groups is (4.5˜5.5):1 in the lithium iron manganese phosphate cathode material.

Abstract: A cylindrical battery module including at least two rows of cell assemblies, two brackets, and a cooling plate is provided. The cell assemblies in each row include cylindrical cells arranged along a first direction. The brackets are disposed at two sides of the cell assemblies along a second direction. The bracket is provided with fixing holes, and the cylindrical cell is plugged into two fixing holes on the brackets. The cooling plate is clamped between adjacent rows of the cell assemblies. The cooling plate is provided with arc grooves arranged at intervals and along the first direction. A first inserting portion is formed between two adjacent arc grooves. The arc grooves are respectively mated with the cylindrical cells of the cell assemblies in one row, and the first inserting portion is inserted into a gap between two adjacent cylindrical cells of the cell assemblies in the one row.