CATL Patente

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Disclosed in the present disclosure are a driving circuit, a control apparatus, and a driving system. The driving circuit comprises a driving control circuit and a plurality of half-bridge circuits, an output end of the driving control circuit being connected to the plurality of half-bridge circuits, wherein the driving control circuit is used for receiving a communication signal and outputting a plurality of control signals; and the plurality of half-bridge circuits are used for determining the operating states of the plurality of half-bridge circuits on the basis of the plurality of control signals, and providing a driving signal to at least one load circuit on the basis of the operating states of the plurality of half-bridge circuits, wherein the driving signal of each load circuit is provided by at least two of the plurality of half-bridge circuits. In this way, the resource occupancy of a GPIO interface of an MCU can be reduced, thereby improving the control efficiency of the circuit, and the complexity of the circuit is also reduced, thereby improving the anti-interference performance of the circuit.

The present application provides an end cover welding apparatus (30) for a battery cell (100), an assembling method and a battery cell (100), in which, the battery cell (100) includes a case (101), and an end cover (102) which is arranged at one end of the case (101); a joint of the case (101) and the end cover (102) is provided with a first connecting seam and a second connecting seam which are arranged along a circumferential direction of the case (101); the end cover welding apparatus (30) includes a material conveying assembly (310) and a welding assembly (340), in which, the material conveying assembly (310) includes a conveying line (311), a first clamp (312) and a second clamp (313), and the first clamp (312) and the second clamp (313) are arranged at an interval on the same conveying line (311); the first clamp (312) is configured to fix the case (101) and make the first connecting seam visible; the second clamp (313) is configured to fix the case (101) and make the second connecting seam visible; and the welding assembly (340) is arranged along the conveying line (311) and is configured to weld the first connecting seam when the first clamp (312) with the battery cell (100) fixed is conveyed to the welding assembly (340), and is also configured to weld the second connecting seam when the second clamp (313) with the battery cell (100) fixed is conveyed to the welding assembly (340).

A terminal post welding device (500) and a battery assembling system (1), wherein the terminal post welding device (500) comprises: a battery cell fixing assembly (510), a first tab pressing plate unit (520a) and a welding assembly (515), wherein the battery cell fixing assembly (510) is used to support and fix a battery cell (100) arranged in a lying-down state; the first tab pressing plate unit (520a) comprises a first driving assembly (521) and a first tab pressing plate (522), the first tab pressing plate (522) is mounted on the first driving assembly (521), and the first driving assembly (521) is used to drive the first tab pressing plate (522) to move so that the first tab pressing plate (522) presses the tab portion (1030) of the battery cell (100) onto the terminal post (104) of the battery cell (100); the welding assembly (515) is configured to weld the tab portion (1030) and the terminal post (104) that are pressed together.

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Provided in the embodiments of the present application are a battery cell, a battery, an electric apparatus, and an energy storage device. The battery cell comprises a casing and an electrode assembly, wherein the casing comprises a casing body and an end cap, the casing body being provided with an opening and comprising a first wall, the first wall comprising a first opening portion and a first body portion, which are distributed in sequence in a first direction, the first direction being parallel to the thickness direction of the end cap, the first body portion being far away from the opening relative to the first opening portion, and the end cap being connected to the first opening portion and sealing the opening; and the electrode assembly is arranged in the casing body and comprises a negative electrode sheet, the negative electrode sheet comprising a negative electrode active material, the negative electrode active material comprising a silicon-based material, and the maximum thickness of the first opening portion being greater than the thickness of the first body portion. On the basis of the technical solution provided in the embodiments of the present application, the reliability of the battery can be improved.

The present application relates to the technical field of batteries. Disclosed in the present application are a battery cell, a battery, and an electric device. The battery cell comprises a shell and a pressure relief notch, wherein the shell comprises a first wall; and the pressure relief notch is arranged in the first wall and comprises an arc section and a first extension section, the arc section having a first end, and the first extension section being connected to the first end and extending from the first end in the direction approaching the central axis of the arc section. In the battery cell according to the embodiments of the present application, the tearing range and tearing direction of a torn part on the shell can be controlled, and partial valve opening can be achieved after thermal runaway of the battery cell and tearing of the pressure relief notch, thereby reducing the probability of tearing over a large area of the shell and reducing the damage to the battery cell caused by uncontrollable cracks.

The present application discloses a battery insertion device, a battery assembly method, and a battery assembly system. The insertion device comprises a machine frame, a bearing mechanism, and an insertion mechanism; the bearing mechanism is arranged on the machine frame, and is used for bearing a bottom cover and an electrode assembly supported above the bottom cover; and the insertion mechanism is arranged on the machine frame, and comprises a case fixing mechanism and a tab part guide mechanism, the case fixing mechanism is used for fixing a case, and the tab part guide mechanism and the case fixing mechanism both can get close to or away from the bearing mechanism, wherein the case fixing mechanism is configured to sleeve the case onto the outer side of the electrode assembly by means of an open end when moving close to the bearing mechanism; and the tab part guide mechanism is configured to guide a tab part to penetrate out of an accommodating cavity through a through hole when the case is sleeved on the electrode assembly. According to the present application, by means of the mode, the tab part smoothly extends out of the case, thereby achieving the accurate insertion of the electrode assembly, reducing the battery preparation difficulty, and improving the assembly efficiency and the yield of batteries.

The present application provides a fixing device and a battery cell production system. The fixing device is used for fixing a battery cell prefabricated part and comprises a first supporting base, a bearing member, a clamping assembly and a driving assembly; the clamping assembly is arranged on the first supporting base; the clamping assembly comprises a first clamping member, a second clamping member, a third clamping member and a fourth clamping member, and the first clamping member and the second clamping member are arranged on two opposite sides of the bearing member in a first direction; the third clamping member and the fourth clamping member are arranged on two opposite sides of the bearing member in a second direction; the driving assembly is configured to be capable of driving the first clamping member and the second clamping member to be far away from or close to each other in the first direction, and driving the third clamping member and the fourth clamping member to be far away from or close to each other in the second direction. In this way, a space for containing the battery cell prefabricated part can be adaptively adjusted in the horizontal direction on the basis of the shape and/or size of the battery cell prefabricated part, and the application range of the fixing device in the present application is widened.

The present application provides a dust removal device and a battery production system. The dust removal device comprises dust removal assemblies and a first driving assembly. Each dust removal assembly comprises a dust removal brush, and the first driving assembly is connected to the dust removal brush and is configured to be capable of driving the dust removal brush to move in a first direction. In this way, the dust removal brush can clean weld spatters while moving, allowing for a large area of removal of weld spatters on hollow poles of battery cell preforms; and furthermore, the dust removal brush can achieve cleaning of strip-shaped weld marks, improving the cleaning effect of the dust removal device.

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