CATL Patente

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A battery and an electric device. A battery (1100) comprises a box body (10), insulating members (30), and at least one battery cell (20). The box body (10) comprises first side beams (121) and second side beams (122), and the first side beams (121) and the second side beams (122) are connected and define an accommodating space (101). The at least one battery cell (20) is located in the accommodating space (101), battery cells adjacent to the first side beams (121) are first battery cells (201), the maximum area surface of each first battery cell (201) is a first surface (21), and the first surface (21) of the first battery cell (201) faces the corresponding first side beam (121). The insulating members (30) are located in the accommodating space (101), and each insulating member (30) is provided between the first battery cells (201) and the corresponding first side beam (121), so that when the first side beam (121) is impacted, the first surfaces (21) of the first battery cells (201) bear impact, reducing the impact deformation of the first battery cells (201), reducing the short-circuit risk of the first battery cells (201), thereby improving the use reliability of the battery (1100).

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The present application discloses a battery and an electric device. The battery comprises a case, a heat exchange assembly, and at least one battery cell; the case comprises a plurality of first side beams, and the plurality of first side beams are connected to define a first accommodating cavity; the at least one battery cell is located in the first accommodating cavity; the heat exchange assembly is located in the first accommodating cavity, and comprises at least one heat exchange piece used for exchanging heat with the battery cell; and an accommodating slot is formed in at least one first side beam, and the at least one heat exchange piece is at least partially accommodated in the accommodating slot. In this way, the internal space of the case is saved, the space utilization rate of the battery is improved, and the structural compactness of the battery is improved, thereby improving the volumetric energy density of the battery.

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Provided are a battery (100) and an electrical apparatus, which are applicable to the technical field of battery (100). The electrical apparatus includes the battery (100), the battery (100) including a battery unit (10) and a box body (20), where the battery unit (10) includes at least one battery cell (1). The box body (20) is provided with two first walls (21) opposite to each other along a first direction (Y), the two first walls (21) being each connected with a first connection member (22) configured to be connected to an external device, where in the first direction (Y), the battery unit (10) is disposed between the two first walls (21) and is position-limited by the first walls (21). In a case where the first connection member (22) is connected to the external device, the external device can constrain relative positions of the two first walls (21) in the first direction (Y), such that the two first walls (21) can constrain the battery unit along the first direction (Y) to effectively resist the expansion of the battery cell (1) and to reduce or eliminate the provision of structures such as an expansion beam, which helps to reduce the cost of the battery (100).

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A negative electrode current collector, a battery cell, a battery, and an electric apparatus are provided. The negative electrode current collector includes a foam metal substrate, where the foam metal substrate has a mass-specific electrochemically active surface area of 2.5 cm<2>/g to 20 cm<2>/g and an electrochemically active volumetric surface area of 22 cm<2>/cm<3> to 180 cm<2>/cm<3>. The negative electrode current collector can mitigate dendrite growth, reduce the risk of internal short circuits in the battery, improve the reliability and cycle life of the battery, and enable the battery to undergo high-rate charging.

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The present application discloses a thermal management component, a battery, and an electric device. The thermal management component comprises a heat exchange tube and a first current collector; the heat exchange tube has a first end; a first flow channel used for accommodating a heat exchange medium is formed in the first current collector; the first flow channel has a first inner surface and a second inner surface which are oppositely arranged in a first direction; the first end is inserted into the first flow channel, and the first end is attached to at least one of the first inner surface and the second inner surface. Therefore, the size of the thermal management component in the first direction can be optimized, thereby reducing the space occupied by the thermal management component in the first direction, improving the energy density of a battery using the thermal management component.

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A coating control system is disclosed, including: a rotating mechanism (1) performing a roll change operation, a reeling mechanism (2) performing a reeling operation, a first reader (3) disposed at a standby position, a controller (4) electrically connected to the first reader (3), and a manufacturing execution system (5) electrically connected to the controller (4). The rotating mechanism (1) rotates a roll (6) located at the standby position to a reeling station. The roll (6) is provided with an electronic tag (7), and the electronic tag (7) carries a roll identifier of the roll (6). The first reader (3) reads the electronic tag (7) provided on the roll (6) located at the standby position and sends it to the manufacturing execution system (5) via the controller (4). The manufacturing execution system (5) generates a roll material identifier corresponding to the roll material, where the roll identifier corresponds to the roll material identifier. The coating control system achieves automatic acquisition of the roll material identifier, eliminating the manual process of requesting a film roll number, thereby reducing the probability of failing to acquire the roll material identifier. A coating control method is also included.

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A coating die and a coating apparatus for a battery electrode plate are provided. The coating die includes a first die (1) and a second die (2). The first die (1) includes a first main body (11) and a first component (12), where the first component (12) is detachably connected to the first main body (11). The second die (2) and the first die (1) are arranged along a first direction (Z). A cavity (3) for accommodating a slurry is formed between the second die (2) and the first main body (11). A discharge port (4) in communication with the cavity (3) is formed between the first component (12) and the second die (2). When the first component (12) is worn, the worn first component (12) only needs to be removed, and a new first component (12) is installed, thereby reducing the downtime of the coating die, improving the coating efficiency, and reducing the production costs.

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A cell (20), a battery (100), and an electric device. The cell (20) includes a can (21), an electrode assembly (22), a first insulating member (23), and a second insulating member (24). The can (21) shares a first wall portion (213). The electrode assembly (22) is accommodated in the can (21). The electrode assembly (22) includes a first electrode lead-out portion (222) and a main portion (221). The first electrode lead-out portion (222) is arranged at an end of the main portion (221) facing the first wall portion (213) along a first direction. Along the first direction, the first insulating member (23) is arranged on a surface of the first wall portion (213) facing the electrode assembly (22). The first insulating member (23) is configured to insulate and isolate the first electrode lead-out portion (222) from the first wall portion (213). At least a part of the second insulating member (24) is arranged between the first electrode lead-out portion (222) and the first wall portion (213) along the first direction. A material damage temperature of the second insulating member (24) is higher than a material damage temperature of the first insulating member (23). The second insulating member (24) can insulate and isolate the first electrode lead-out portion (222) from the first wall portion (213) when the first insulating member (23) melts. After the first insulating member (23) melts, the second insulating member (24) can further implement insulation and isolation functions, to reduce a risk of a short circuit and improve reliability of a battery.

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A battery and an electrical device. The battery comprises a case (10), a connector (30) and at least one battery cell (20), wherein the at least one battery cell (20) is located in the case (10); and the connector (30) comprises a first connecting portion (31) and a second connecting portion (32) connected to each other, the first connecting portion (31) being fixedly connected to the at least one battery cell (20), and the second connecting portion (32) being fixedly connected to the case (10), so that the connector (30) can stably connect the battery cell (20) and the case (10) together, the connection reliability of the battery cell (20) and the case (10) is improved, and the structural strength and rigidity of the battery are improved, thereby improving the use reliability of the battery, and prolonging the service life of the battery.