EVE Energy

A battery recharging method, for a battery in a vehicle, wherein the battery is configured to provide a low-voltage power supply, and the method includes: monitoring (110) a preset event for triggering a recharging request, wherein the preset event includes at least a first preset event for a non-sleeping state of the vehicle and a second preset event for a sleeping state of the vehicle; sending (120), in response to the preset event, the recharging request to a target module in the vehicle corresponding to the preset event, to request the target module to charge the battery; and sending (130) a preset instruction to the target module to instruct the target module to cease charging the battery in response to the battery being charged by the target module meeting a preset condition.

A method for determining a State of Health (SOH) battery and an electronic device are provided. The method includes: obtaining (101) a cyclic degradation amount of an SOH of a target battery within a previous usage cycle; obtaining (102) a calendar degradation amount of the SOH of the target battery between the previous usage cycle and a current usage cycle; determining (103) a total degradation amount of the SOH of the target battery within the previous usage cycle based on the cyclic degradation amount and the calendar degradation amount; and determining (104) a current SOH of the target battery based on the total degradation amount relating to the previous usage cycle. This application can reduce estimation errors of the battery's SOH.

The present disclosure relates to a battery thermal management system, a battery pack, and an electrical device. The battery thermal management system includes a battery module, where the battery module includes a frame body as well as a fitting plate and a liquid cooling plate fitted at opposite sides of the frame body, a fitting cavity is formed by the frame body, the fitting plate, and the liquid cooling plate to fit a plurality of battery cells, the liquid cooling plate is provided with a plurality of flow guiding columns protruding from the liquid cooling plate, a liquid cooling flow channel is provided in the liquid cooling plate, each of the flow guiding columns is provided with a flow guiding hole, and the liquid cooling flow channel is in communication with the fitting cavity through the flow guiding holes.

The present disclosure provides a laminated battery cell manufacturing apparatus and a method of operating the laminated battery cell manufacturing apparatus. The laminated battery cell manufacturing apparatus includes a negative electrode conveying mechanism (10), two unwinding rollers (20), two positive electrode conveying mechanisms (40), a first identification element (51), a second identification element (52), a cutter (70), a winding needle (80), and two first thermal bonding rollers (61). Each of the two unwinding rollers (20) is configured to unwind a corresponding separator (21) downstream of the unwinding roller. Each of the two unwinding rollers (20) is externally provided with a remaining amount detection element (30) configured to detect a length of the remaining separator (21) on the corresponding unwinding roller (20). The negative electrode conveying mechanism (10) is configured to intermittently convey a negative electrode plate (18) between the two separators (21). The remaining amount detection element (30) is in a communication connection with the negative electrode conveying mechanism (10). Each of the two positive electrode conveying mechanisms (40) is configured to place a positive electrode plate (48) at a side of the corresponding separator (21) away from the negative electrode plate (18). A first identification element (51) is disposed between the positive electrode conveying mechanism (40) and the unwinding roller (20). A material receiving member (90) is located downstream of the cutter (70). The material strip thermally bonded with the positive electrode plates (48) is stacked in the material receiving member (90).

The application provides a battery case, including: a base; and a holder connected to the base, wherein the holder and the base together form one or more pressure relief channels so that the one or more pressure relief channel is housed by the holder and the base; wherein at least one of the holder and the base has a blocking portion located at an end of each of the one or more the pressure relief channels, and the holder and the base are in sealing connection with each other by the blocking portion to block the end of the pressure relief channel. The battery case of the present application reduces the impact of thermal runaway of the battery on the electrical device.

A button battery is provided in the application, and includes a positive electrode case, a negative electrode case and a sealing sleeve. The positive electrode case includes a support portion and a corner portion connected to an outer side of the support portion. The corner portion includes a first turning segment having a first curvature radius R1 and a second turning segment having a second curvature radius R2. The second turning segment is connected between the support portion and the first turning segment. The negative electrode case includes a covering portion and a bending snap-engage portion having a third curvature radius R3. The covering portion and the support portion are disposed oppositely. The sealing sleeve is sandwiched between the corner portion and the bending snap-engage portion, so as to enable sealing between the positive electrode case and the negative electrode case.

The present application provides a cell holder, a battery module, and a battery pack. The cell holder includes a holder body, and the holder body is provided with a mounting groove. The mounting groove is configured to mount a cell, a bottom surface of the mounting groove is provided with a pressure-relief hole, and the pressure-relief hole is configured to correspond to a position where an explosion-proof valve of the cell is located. The holder body is connected to a flow guide member protruding in a direction away from an opening of the mounting groove. The flow guide member covers part of the pressure-relief hole, and the flow guide member is configured to direct gas to be discharged in a predetermined direction after passing through the pressure-relief hole.

Provided are a liquid cooling device and a battery pack. The liquid cooling device includes multiple liquid cooling plates (1), multiple metal tubes (2), and multiple connectors (3). Each metal tube (2) is configured to connect two liquid cooling plates (1). An end of the metal tube (2) is inserted into a communication port (1) of a liquid cooling plate (12) of the two liquid cooling plates (1) in a sealed manner. A connector (3) is disposed at a joint between the metal tube (2) and the liquid cooling plate (1). The metal tube (2) is connected to the connector (3). The connector (3) is connected to the liquid cooling plate (1). The distance between the connector (3) and the liquid cooling plate (1) is adjustable. The depth to which the metal tube (2) is inserted into the communication port (12) varies with the distance between the connector (3) and the liquid cooling plate (1).

The application provides a battery pack and an electrical device. The battery pack includes a plurality of liquid cooling plates, a plurality of side frames, and a plurality of battery modules. The plurality of the liquid cooling plates are arranged sequentially and spaced apart along a gravitational direction. Each side frame is disposed between adjacent two of the liquid cooling plates, and each side frame has two ends connected to two of the liquid cooling plates. The plurality of the side frames and the plurality of the liquid cooling plates enclose and form a plurality of battery compartments. The plurality of the battery modules are respectively installed in the plurality of the battery compartments, with two ends of each battery module, arranged oppositely along the gravitational direction, thermally connected to the liquid cooling plate.

A battery pack bracket (100), a bracket assembly (10) and a vehicle (1) are provided herein. The vehicle includes a bracket assembly (10); the bracket assembly (10) includes a battery pack bracket (100). The battery pack bracket (10) includes: a supporting platform (100a) and at least two cantilever beams (110). The supporting platform (100a) is configured to install the battery pack; at least two cantilever beams (110) are disposed at intervals on both sides of the supporting platform (100a) along a first direction; a width of at least part of the cantilever beam (110) gradually decreases in a direction away from the connecting structure; the cantilever beam (110) includes a bottom plate (110a) and two side plates (110b), and a plurality of connecting bodies (110c) are connected between the two side plates (110b).