CATL Patente

This application relates to the field of power electronics technology and provides an energy storage valve submodule (100), an energy storage valve, and an energy storage station. In the energy storage valve submodule (100), a power module (120) can disconnect an electrical connection from an energy storage module (110) through a switch module (130), forming electrical isolation, thereby achieving the electrical disconnection between the power module (120) and the energy storage module (110). During maintenance of components other than the energy storage module (110) in the energy storage valve, leakage current is prevented, ensuring the personal safety of maintenance personnel. Similarly, in the case of a non-severe fault on the energy storage module (110) side of the energy storage valve, the switch module (130) can be used to isolate the energy storage module (110) from the system under the premise that the energy storage valve is locked, without affecting the safe operation of the entire system, effectively improving system availability.

The present application discloses a support, a support assembly, and a vehicle. The support is configured to be installed on a frame, and the support includes a mounting beam. The mounting beam is provided with a plurality of mounting portions, the plurality of mounting portions are arranged spaced apart in a length direction of the mounting beam, and the plurality of mounting portions are configured to be detachably connected to batteries. A cavity is formed inside the mounting beam, and the cavity extends in the length direction of the mounting beam. The technical solution provided in the present application can improve the degree of weight reduction of the vehicle.

This application provides a locking mechanism, a battery assembly, an electric device, and a locking apparatus, and pertains to the field of battery swapping technology. The locking mechanism includes a sleeve, a locking piece, an adjustment piece, and a fastening assembly. The locking piece is movably provided in the sleeve, the locking piece has a locked state and an unlocked state, and the locking piece is configured to snap into a lock base in the locked state and snap out of the lock base in the unlocked state, enabling the locking mechanism to engage with or disengage from the lock base along a first direction. The adjustment piece is rotatably connected within the sleeve rotatably about an axis extending along the first direction, where the adjustment piece is threadedly connected to the locking piece, and the adjustment piece is configured to drive, when rotating relative to the sleeve, the locking piece to move relative to the sleeve, so that the locking piece switches between the locked state and the unlocked state. The fastening assembly is configured to prevent the locking piece from moving relative to the adjustment piece in a direction from the adjustment piece toward the lock base along the first direction when the locking piece is in the locked state.

Provided are a coating die head and a coating device for an electrode sheet. The coating die head is provided with a feeding port (111), a first flow equalizing cavity (11210), flow channels (11220), and a plurality of coating ports (1410); the first flow equalizing cavity (11210) extends in a first direction and is communicated with the feeding port (111); the plurality of coating ports (1410) are arranged at intervals in the first direction; and the flow channels (11220) are configured to communicate the first flow equalizing cavity (11210) with the plurality of coating ports (1410). Since the minimum cross-sectional areas of the flow channel (11220) between the plurality of coating ports (1410) and the first flow equalizing cavity (11210) are sequentially increased in the direction from the coating ports (1410) close to the feeding port (111) to the coating ports (1410) distant from the feeding port (111), the pressure lost by the slurry flowing to the coating ports (1410) distant from the feeding port (111) during the flow process is lower than the pressure lost by the slurry flowing to the coating ports (1410) close to the feeding port (111), thereby improving the uniformity of slurry coating in the coating process.

Provided are a coating die head and a coating apparatus for an electrode sheet. The coating die head is provided with a feed inlet (111), a first flow equalizing cavity (11210), flow channels (11220), and a plurality of coating ports (1410); the first flow equalizing cavity (11210) extends in a first direction and is communicated with the feed inlet (111); the plurality of coating ports (1410) are arranged at intervals in the first direction; and the flow channels (11220) are configured to communicate the first flow equalizing cavity (11210) with the plurality of coating ports (1410). In the direction of the coating ports (1410) moving away from the feed inlet (111), the minimum lengths of the flow channels (11220) between the coating ports (1410) among the plurality of coating ports (1410) and the first flow equalizing cavity (11210) show a decreasing trend.

Embodiments of this application disclose an adhesive tape attaching device and an adhesive tape attaching method. The device includes: an adhesive tape attaching assembly, where the adhesive tape attaching assembly includes a first adhesive tape attaching mechanism and a second adhesive tape attaching mechanism; and a control assembly configured to control the adhesive tape attaching assembly to move along a first direction toward a to-be-attached workpiece. The first adhesive tape attaching mechanism is configured to adhere a first portion of an adhesive tape to a region of a first wall of the to-be-attached workpiece close to a second wall of the to-be-attached workpiece, the second adhesive tape attaching mechanism is configured to adhere a second portion of the adhesive tape to a region of the second wall close to the first wall, the first portion is connected to the second portion, and the first wall intersects with the second wall. The adhesive tape attaching device and the adhesive tape attaching method provided by the embodiments of this application can improve adhesive tape attachment efficiency.

This application relates to an energy storage valve submodule and an operation method thereof, an energy storage valve apparatus, and an energy storage system. A battery bus connecting a battery module and a capacitor is further connected to a bus power supply module, the bus power supply module is further connected to a control module, and a load power supply module can extract energy from at least one of the capacitor, the battery bus, and the battery module, and ultimately supply power to the control module through the bus power supply module and the load power supply module.

The present application discloses a box body, a battery and an electrical apparatus. The box body is applied to the battery. The box body includes a first box body, a second box body, a first sealing member and a position-limiting portion. The first box body has a first sealing surface. The second box body has a second sealing surface. The first sealing member is arranged between the first sealing surface and the second sealing surface so that the first sealing surface is in sealed connection with the second sealing surface. The position-limiting portion protrudes from the second sealing surface and is configured to limit the movement of the first sealing member. Technical solutions provided in the present application can improve the reliability of the battery.

This application relates to the field of batteries, and provides a battery temperature control method, apparatus, and system, a device, and a storage medium. The method includes: obtaining a first temperature of a first battery and a second temperature of a second battery in an electric device; determining a first temperature difference based on the first temperature and the second temperature; and under a condition that the first temperature difference is greater than a predetermined first temperature difference threshold, performing cooling processing on the first battery, where the first temperature is higher than the second temperature. Under a condition that the first temperature difference is greater than the first temperature difference threshold, the first battery corresponding to the first temperature is cooled. In this way, temperatures between batteries are close, improving overall performance of the batteries, and enhancing battery use experience.

A battery installation frame, a vehicle frame assembly and a vehicle. The battery installation frame (10) comprises a plurality of extension portions (2) arranged at intervals, wherein a battery mounting space (4) running in the direction of height Z of the extension portions (2) is formed between two adjacent extension portions (2); and the battery installation frame (10) is provided with battery mounting structures (3) for mounting batteries (30) in the battery mounting spaces (4).

The present application provides a negative electrode plate, a secondary battery, and an electrical apparatus. The negative electrode plate includes a current collector and a negative electrode film layer, where the negative electrode film layer includes a first film layer, provided on one side or both sides of the current collector; and a second film layer, provided on one side of the first film layer away from the current collector; a negative electrode active material of the first film layer and a negative electrode active material in the second film layer each independently include a silicon-based negative electrode material, the silicon-based negative electrode material in the second film layer includes a porous silicon negative electrode material, and a content of the silicon-based negative electrode material in the first film layer is less than a content of the silicon-based negative electrode material in the second film layer. The charging capability and cycling performance of the secondary battery are improved.

Provided in the present application are an energy storage system (1000) and an energy storage power station. The energy storage system (1000) comprises a battery module (100), a converter (200) and a cooling device (300), wherein a cooling unit (310) of the cooling device (300) is connected to a first liquid inlet (111) and a second liquid outlet (212) by means of pipelines. A bypass structure (320) is configured to be in communication with a first liquid outlet (112) and a second liquid inlet (211), and can bypass part of a coolant, which is discharged from the first liquid outlet (112), to the outside of the second liquid inlet (211); therefore, only part of the coolant enters a second cooling structure (210) from a first cooling structure (110), such that only using one cooling device (300) can meet different flow requirements of both the first cooling structure (110) and the second cooling structure (210), thereby effectively reducing the cost of the energy storage system (1000).

A bracket, a bracket assembly, and a vehicle are provided. The bracket (100) is mounted on a vehicle frame (200) and the bracket is provided with multiple sets of mounting parts (11), each set of mounting parts being configured to detachably connect one battery (2000). The bracket assembly (1000) includes the bracket (100) and multiple first connectors (1001) disposed on the bracket, each first connector being used to connect with a second connector of one battery. The vehicle (10000) includes the bracket assembly (1000) and at least one battery. By providing multiple sets of mounting parts on the vehicle frame, the vehicle is enabled to adjust the number of batteries to be swapped as needed based on different range requirements, thereby effectively reducing the cost of battery swapping.

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