Abstract: The present disclosure relates to an electrode component, an electrode assembly and a rechargeable battery. The electrode component includes an electrode body, a conductive structure, and a reinforcement structure. The electrode body includes an insulating substrate and a conductive layer disposed on surfaces of the insulating substrate, the conductive layer includes a first portion coated with an active material and a second portion extending from the first portion and uncoated with the active material. The conductive structure is connected to the second portion. The reinforcement structure reinforces the conductive structure on the second portion. According to the present disclosure, by reinforcing the conductive structure connected to the second portion of the electrode component having the insulating substrate by the reinforcing structure, the reliability of the arrangement of the conductive structure on the second portion can be effectively improved.

Abstract: The present disclosure relates to technical field of energy storage devices, and in particular, to a secondary battery and a vehicle. The secondary battery includes a top cover plate, electrode terminals disposed on the top cover plate, at least one electrode assembly including a main body and a plurality of conductive portions extending from the main body. The plurality of conductive portions is stacked and forms a tab, and the main body is formed by winding a first electrode plate, a second electrode plate and a separator disposed between the first electrode plate and the second electrode plate. The secondary battery also includes connecting pieces for connecting the tab to the electrode terminal. The tabs extend from one side of the main body viewed in thickness direction and are bent with respect to height direction and is connected to the connecting piece.

Abstract: The present disclosure relates to a vent for a secondary battery top cover, a top cover assembly, a secondary battery and a vehicle. The vent includes a flat base and a protrusion protruding outward with respect to flat base. The protrusion has a main nick and at least one branch nick connected to at least one end of the main nick. An angle formed between the main nick and the branch nick is more than zero. When the pressure inside the case increases excessively, gas causes stress concentration at the protrusion such that the vent is torn along the main nick and the at least one branch nick, thereby releasing the gas in the case, reducing explosion risk of the secondary battery, and improving safety of the secondary battery.

Abstract: A cap assembly of a power battery comprises: a cap plate, a first electrode terminal provided to the cap plate, a second electrode terminal provided to the cap plate and electrically insulated from the cap plate, and a resistance member electrically connected to the cap plate and the first electrode terminal. The resistance member comprises: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to the heat-resistant insulating base body. The heat-resistant metal layer and the cap plate and the first electrode terminal are electrically connected to form a conductive path, the conductive path passes along the heat-resistant insulating base body positioned between the cap plate and the first electrode terminal. The formed conductive path is a curved path, therefore the resistance value of the resistance member can be controlled by controlling the conductive path.

Abstract: The present invention relates to the technical field of rechargeable batteries and, in particular, to an electrode member, an electrode assembly and a rechargeable battery. The electrode member of the present invention includes an electrode body. The electrode body includes an insulating base and a conductive layer disposed on a surface of the insulating base. The conductive layer has a first portion and a second portion extending from the first portion, the first portion is adapted to be coated with an active material and the second portion is uncoated with the active material. A portion of the insulating base corresponding to the second portion is provided with a first through-hole throughout a thickness direction.

Abstract: Provided are a top cover assembly and a secondary battery containing the same. The top cover assembly includes a cover plate, and a first terminal assembly; the top cover plate includes a main body and a protrusion connected to the main body, the protrusion protrudes beyond an upper surface of the main body, an accommodation chamber is defined below the protrusion, the protrusion faces the accommodation chamber, the first terminal assembly includes a deformable plate, and the deformable plate is connected to the top cover plate and covers the accommodation chamber. Such solution can sufficiently utilize the space between the upper surface of the top cover plate and the upper surface of the second terminal assembly, improve the space utilization of the secondary battery, improve the deformation resistance of the top cover plate and the strength of the top cover plate, and keep the secondary battery safe.

Abstract: The present application provides a secondary battery including a first terminal component, a second terminal component, a cap plate, an electrode component and a resistance element. One of the first and second terminal components is electrically connected to the cap plate through the resistance element, while the other is insulated from the cap plate. The first terminal component includes a connecting plate and a turnable plate, and the connecting plate is attached to the turnable plate. When the secondary battery is in a normal state, a first electrode plate is electrically connected to the connecting plate through the turnable plate, and the second electrode plate is electrically connected to the second terminal component. When a pressure inside the secondary battery exceeds a reference pressure, the turnable plate can turn over to cut off an electrical connection between the turnable plate and the first electrode plate.

Abstract: The present disclosure provides a secondary battery which comprises: a cap plate provided with a first electrode terminal and a second electrode terminal; an electrode assembly comprising a main body, a first electrode tab and a second electrode tab; a first connecting piece connected between the first electrode tab and the first electrode terminal. The second electrode tab is electrically connected with the second electrode terminal. The first connecting piece includes a first electrode terminal connecting portion, a first electrode tab connecting portion and a first fusing portion. The secondary battery further comprises an insulating piece adhered on a surface of the first connecting piece which is connected with the first electrode tab, and the insulating piece at least covers an edge of the first electrode terminal connecting portion close to the first electrode tab, so as to isolate the first electrode tab from the first electrode terminal connecting portion.

Abstract: A secondary battery, including an electrode assembly, a positive terminal, a negative terminal, a top cover plate, a conductive plate and a contact plate, wherein the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator provided therebetween, the positive electrode plate is electrically connected with the positive terminal, and the negative electrode plate is electrically connected with the negative terminal, the contact plate is attached to the negative terminal, the top cover plate is insulated from the negative terminal and is electrically connected with the positive terminal, the conductive plate is fixedly connected with the top cover plate, the contact plate is configured to deform under gas pressure to be in contact with the conductive plate when an internal pressure of the secondary battery exceeds a reference pressure.

Abstract: This application provides a secondary battery including an electrode assembly, a first terminal, a second terminal, a top cover plate and a contacting plate attached to the first terminal, the electrode assembly includes a first electrode, a second electrode and a separator between the first electrode and the second electrode, the first terminal is electrically connected with the first electrode, the second terminal is electrically connected with the second electrode, the top cover plate is insulated from the first terminal and is electrically connected with the second terminal, when internal pressure of the secondary battery exceeds reference pressure, the contacting plate deforms under the internal pressure and contacts the top cover plate, so as to form an electrical connecting path through the first electrode, the first terminal, the contacting plate, the top cover plate, the second terminal and the second electrode.

Abstract: The present application relates to a top cover structure for a power battery and a power battery, the top cover structure includes a first electrode assembly, a second electrode assembly, a first resistance, a second resistance, a third resistance, a top cover plate, a first short circuit component and a second short circuit component, the first electrode assembly is electrically connected with the top cover plate through the first resistance for all time, the first short circuit component and the second short circuit component are attached to the top cover plate, when internal pressure of the power battery exceeds reference pressure, the first short circuit component and the second short circuit component deform by effect of pressure, so as to form a first electrical connecting path and a second electrical connecting path, the second resistance and the third resistance are connected into the first electrical connecting path in series.

Abstract: The present application relates to a top cover structure for a power battery and a power battery, the top cover structure includes a first electrode assembly, a second electrode assembly, a first resistance, a second resistance, a top cover plate, a first short circuit component and a second short circuit component, the first electrode assembly is electrically connected with the top cover plate through the first resistance for all time, the first short circuit component and the second short circuit component are both attached onto the top cover plate, when an internal pressure of the power battery exceeds a reference pressure, the first short circuit component and the second short circuit component deform by effect of pressure, so as to form a first electrical connecting path and a second electrical connecting path, the second resistance is connected into the first electrical connecting path in series.

Abstract: A safety cap assembly of power battery comprises a cap plate and a first terminal unit, a second terminal unit, a vent, an electrolyte-injection hole and a safety reverse valve provided to the cap plate; the first terminal unit is electrically connected to the cap plate; the second terminal unit is insulated from and assembled to the cap plate; the safety reverse valve is electrically connected to the cap plate; a short circuit protection conducting plate is provided above the cap plate, is electrically connected to the second terminal unit, and is positioned above the safety reverse valve; the first terminal unit comprises a first terminal body, and a metal gasket and a resistance plate around the first terminal body, the resistance plate is provided below the metal gasket and comprises a substrate and a coating on a surface of the substrate.

Abstract: A cap assembly of a power battery comprises: a cap plate, a first electrode terminal provided to the cap plate, a second electrode terminal provided to the cap plate and electrically insulated from the cap plate, and a resistance member electrically connected to the cap plate and the first electrode terminal. The resistance member comprises: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to the heat-resistant insulating base body. The heat-resistant metal layer and the cap plate and the first electrode terminal are electrically connected to form a conductive path, the conductive path passes along the heat-resistant insulating base body positioned between the cap plate and the first electrode terminal. The formed conductive path is a curved path, therefore the resistance value of the resistance member can be controlled by controlling the conductive path.

Abstract: The present disclosure relates to a safety device of a lithium-ion battery comprising a cap plate, a first electrode post, a second electrode post, a deformable plate and a conductive piece, the first electrode post and the second electrode post are provided to the cap plate, the first electrode post is insulated from and assembled to the conductive piece, the deformable plate is provided between the first electrode and the conductive piece, and the deformable plate is electrically connected to the first electrode post and the conductive piece respectively, the conductive piece is provided with a recessed portion, the recessed portion is provided with a notch. The safety device of the lithium-ion battery ensures the recessed portion will be broken effectively by the internal pressure when an internal pressure of the lithium-ion battery reaches a preset value so as to disconnect the charging circuit and provide security protection.

Abstract: The present invention discloses a lithium ion battery, including a battery shell, a battery top cap mounted on the battery shell, and a relief valve provided on the battery shell and/or the battery top cap; the lithium ion battery further includes a safety protection device that is provided on the battery shell and/or the battery top cap and that fixedly fits with the relief valve; where the safety protection device includes a baffle plate opposite to the relief valve, a side wall and a gas flow channel structure; the side wall extends, from the baffle plate, toward the battery shell or the battery top cap, and is connected with the battery shell or the battery top cap; and the gas flow channel structure is formed on the side wall.

Abstract: A safety cap assembly of power battery comprises a cap plate and a first terminal unit, a second terminal unit, a vent, an electrolyte-injection hole and a safety reverse valve provided to the cap plate; the first terminal unit is electrically connected to the cap plate; the second terminal unit is insulated from and assembled to the cap plate; the safety reverse valve is electrically connected to the cap plate; a short circuit protection conducting plate is provided above the cap plate, is electrically connected to the second terminal unit, and is positioned above the safety reverse valve; the first terminal unit comprises a first terminal body, and a metal gasket and a resistance plate around the first terminal body, the resistance plate is provided below the metal gasket and comprises a substrate and a coating on a surface of the substrate.

Abstract: This invention belongs to the field of power battery technologies, and in particular, to a power battery. The power battery comprises a battery shell, a cell accommodated in the battery shell, an electrolyte filled inside the battery shell, and a top cover assembled in a sealed way to the battery shell; a cathode tab and an anode tab are positioned on a front end of the cell; and a cathode transit plate is positioned between the top cover and the cathode tab, wherein a melting region is positioned on the cathode transit plate.

Abstract: This invention belongs to the lithium-ion battery field, and in particular, to a safety device of a lithium-ion battery. The safety device of a lithium-ion battery comprises a top cover plate, a first electrode post, a second electrode post, an explosion-proof valve, and a conductive plate, wherein the first electrode post, the second electrode post, and the explosion-proof valve are respectively positioned on the top cover plate; the first electrode post is electrically connected to the top cover plate; the second electrode post is assembled in an insulated way to the top cover plate; and the second electrode post is electrically connected to the conductive plate; where an air-pressured flip plate is further positioned on the top cover plate, and a cut is positioned on the air-pressured flip plate.

Abstract: The invention pertains to the technical field of a power battery, in particular to a power battery safety cover, comprising a cover plate, and a first terminal, a second terminal, a pressure release valve, a filling hole and a safety turning valve which are arranged on the cover plate, wherein the safety turning valve is electrically connected to the cover plate, on the cover plate is provided with a conducting plate for short-circuit protection which is electrically connected to the second terminal; the conducting plate for short-circuit protection, positioned above the safety turning valve, comprises a conducting plate main body and a first groove arranged on the conducting plate main body, and thickness of bottom of the first groove is less than that of the safety turning valve.