EVE Energy

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 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.

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 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.

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).

A liquid cooling assembly and a battery pack are provided. The liquid cooling assembly includes a plurality of liquid cooling plates arranged at intervals and a main pipe. An installation space for mounting at least one heat-generating element is formed between two adjacent liquid cooling plates. Each of the liquid cooling plates includes a flow passage portion and a plurality of nozzles in communication with the flow passage portion. The main pipe includes a plurality of connectors, and the connectors are in one-to-one expansion connection to the nozzles and are inserted into the nozzles. An inner wall of each of the connectors is provided with a support ring that overlaps each of the nozzles (11).

The present application provides a battery and a negative electrode sheet thereof. The battery negative electrode sheet includes a current collector and an active layer. The active layer is coated on the surface on at least one side of the current collector. The active layer has a plurality of grooves arranged in sequence along the length direction of the current collector. The grooves each extend along the width direction of the current collector. A plurality of regions in the active layer are separated by the plurality of grooves along the length direction of the current collector. Each region has a plurality of pores.

A battery, a battery pack, a housing, and a housing assembly are provided. The battery includes a housing, a cover assembly and a first sealing element. A first opening is formed at one end of the housing, the cover assembly is connected to the housing and seals the first opening, the first sealing element is disposed between the cover assembly and the housing. The first sealing element wraps a side surface of the cover assembly and forms a sealed connection to the cover assembly and the housing, and a gap is formed between the first sealing element and the side surface of the cover assembly.

A battery pack (10) and a vehicle (50) are provided. The battery pack (10) includes a box (100) and a crossbeam (200). The box (100) is provided with a receiving space and mounting holes connected to the receiving space. The crossbeam is fixedly connected to the box (100) and mounted in the receiving space, and a portion of the crossbeam is positioned in the mounting holes and configured to connect with a vehicle frame (30) to mount the battery pack (10) on the vehicle frame (30).