EVE Energy Patente

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.

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 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.

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 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 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.

The application provides a bracket (100) and a battery pack. The bracket (100) includes a base part (110). The base part (110) is provided with at least one installation hole (120) and at least one communication hole (130). Each installation hole (120) is adapted for installing a corresponding battery cell (200). Each communication hole (130) is defined through an inner sidewall of a corresponding installation hole (120). The base part (110) is further provided with at least one glue injection hole (140). Each glue injection hole (140) communicates with a corresponding installation hole (120) through a corresponding communication hole (130).

Provided are a power distribution unit and a vehicle. The power distribution unit includes a housing (100), a BMS assembly (300), an overcurrent assembly (500), and a wiring harness assembly (700). The housing (100) includes a lid (110) and a bottom wall (130) disposed in a first direction, a first mounting cavity (120) and a second mounting cavity (140) disposed in the first direction being formed between the lid (110) and the bottom wall (130). The BMS assembly (300) is mounted in the first mounting cavity (120), where a wiring space is formed between the housing (100) and a side of the BMS assembly (300) in a second direction. The wiring harness assembly (700) passes through the wiring space to be connected to the BMS assembly (300) and the overcurrent assembly (500) separately.

A battery and a method for manufacturing the same are provided. The battery includes battery cell(s) (1) each provided with a first pole and a second pole, busbars including first busbar(s) (2) and second busbar(s) (3), and a case (4) including a housing (41) and a first case cover (42). The housing includes a body (411) and a partition plate (412) both defining a first cavity arranging with battery cell(s). One end of the battery cell abuts against the partition plate. The first case cover is provided at an end of the housing. Support portion(s) (421) are provided on a side of the first case cover. The first busbar is connected to the first pole. The support portion abuts against the first busbar. The partition plate is provided with pole hole(s) each enabling passage of the second pole to connect the second busbar. The second busbar is on a side of the partition plate away from the battery cell.

Provided in the present application is a negative electrode active material, a negative electrode sheet and a lithium-ion battery containing the same. The negative electrode active material includes a silicon-based material and a coating layer disposed on a surface of the silicon-based material, in which the coating layer contains a copolymer including: a first monomer as shown in Formula I; and a second monomer as shown in Formula II; X in the Formula I and Y in the Formula II independently contain at least one of an aryl group and an alkenyl group.

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).

Provided are a battery thermal management system structure and a battery pack, which relate to the technical field of battery devices. The battery thermal management system structure includes a direct cooling plate (110) and a temperature control assembly. A liquid cooling flow channel (400) is disposed in the direct cooling plate (110), and a liquid inlet (410) and a liquid outlet (420) are connected to the liquid cooling flow channel (400). The temperature control assembly includes a controller (240), a temperature sensor (210), a flow regulating valve (230) and a heating film (220). The flow regulating valve (230) is disposed at the liquid inlet (410), the flow regulating valve (230) is connected to the liquid cooling flow channel (400), and the heating film (220) is disposed between the direct cooling plate (110) and the cells (310).

Provided are an electrode sheet, an electrode assembly, and a battery cell, relating to the field of battery technology. The electrode sheet includes a current collector, an active material layer, and an electrode tab. The current collector includes a body and a protruding portion protruding outwardly from a part of an edge of the body. The active material layer is provided on the body and the protruding portion. The electrode tab is connected to the body.

The present application relates to a battery module and a battery pack. The battery module includes: multiple battery cell groups spaced apart along a first direction; multiple cooling plates spaced apart along the first direction, with a cooling plate arranged between two adjacent battery cell groups; and multiple connection terminals located at one end of the cooling plates, the connection terminals corresponding one-to-one with the cooling plates. Adjacent cooling plates are interconnected via the connection terminals, and the connection terminal on the cooling plate furthest from the downstream end is provided with a shunt port for discharging coolant from the cooling plate.

A battery pack, a method for assembling the battery pack, and an electrical device are disclosed. The battery pack includes a battery case (100), a battery cell assembly (200), and a BMS (300). The battery case (100) defines a first accommodation cavity (110) and a second accommodation cavity (120). The first accommodation cavity (110) is isolated from the second accommodation cavity (120). The battery cell assembly (200) is arranged in the first accommodation cavity (110) and includes battery cells. The BMS (300) is arranged in the second accommodation cavity (120). When a battery cell experiences thermal runaway and ejects high-temperature and high-pressure gases and particles, and the high-temperature and high-pressure gases and particles will not enter the second accommodation cavity and are prevented from being dispersed to the BMS. In this way, it is ensured that the BMS can operate normally during the thermal runaway of the battery cell.

Provided are a thermal management device and a battery pack. The thermal management device includes one or more support members and one or more heating films. Each support member is configured to cool a corresponding battery cell row. Each heating film is configured to heat a corresponding battery cell row. Each heating film is connected to a corresponding support member. The heating film is shaped to adapt to the support member so as to ensure a stable contact between the heating film and the support member.

A bracket and a battery pack are provided. The bracket includes a substrate (110). A side of the substrate (100) away from a battery cell (200) is provided with multiple grooves. A side of the substrate (100) adjacent to the battery cell (200) is provided with multiple bosses (110) corresponding to the grooves. A top of each of the bosses (110) is configured to support a corresponding one of the battery cells (200) to form a channel (190) between at least a portion of a bottom of the battery cell (200) and the substrate (100). A bottom of the boss (110) is provided with a first pressure relief slot (120). The first pressure relief slot (120) is configured to communicate with the battery cell (200) when the battery cell (200) undergoes thermal runaway to relieve pressure in the battery cell (200).

The application provides a battery pack and an electrical device. The battery pack includes a cell assembly and a heat exchange assembly. The cell assembly includes a plurality of battery cells, a side surface of each battery cell where an output terminal is located includes a functional region and a non-functional region, and at least one of the output terminal, a liquid injection port, or an explosion-proof valve is provided on the functional region. The heat exchange assembly includes a first heat exchange component and a first support member, and the first support member abuts between the adjacent first heat exchange component and a non-functional region.

The application provides thermal management components and battery packs, relating to battery technologies. The thermal management component includes a current collector, a thermal management plate and a connecting adhesive layer. The current collector has an inner cavity and a plug hole in communication with the inner cavity. The thermal management plate has a flow channel, an end of the thermal management plate is plugged into the plug hole. The flow channel is communicated with the inner cavity. The connecting adhesive layer is disposed between an inner wall of the plug hole and the thermal management plate, and sealingly connects an outer wall of the thermal management plate to the inner wall of the plug hole.

The application provides a thermal management assembly, a thermal management system, and a battery pack. The thermal management assembly includes a first thermal management unit and a second thermal management unit of identical structure. The first thermal management unit includes a liquid inlet pipe assembly, a liquid outlet pipe assembly, and a plurality of thermal management components having flow channels. The liquid inlet pipe assembly and the liquid outlet pipe assembly respectively connects the liquid inlet of the flow channel to the liquid outlet of the flow channel. The thermal management components of the first thermal management unit and the thermal management components of the second thermal management unit are arranged alternately in sequence. The pipe assemblies are located at a same end of the thermal management components.

A composite separator is disclosed in the present disclosure. The composite separator includes a first separator and a second separator disposed in sequence, the first separator is a nonwoven separator or a cellulose separator, and the second separator is a fiberglass separator; and a porosity of the first separator is not higher than a porosity of the second separator.

This application provides a battery cell (100), a battery module (200), a battery pack and an electrical apparatus. The battery cell (100) includes a cell structure (10) and a temperature detection assembly (20). The temperature detection assembly (20) includes a holder (21) and a temperature detector (22). The cell structure (10) is fixed to the holder (21) which defines a receiving recess (2120), and the temperature detector (22) configured to collect temperature data of the cell structure (10) is at least partially received in the receiving recess (2120).

The invention discloses a laser welding assembly, a laser welding defect detection method and system. The laser welding assembly includes a welding kit and a temperature sensor. The welding kit has a laser incident through-hole. The temperature sensor is disposed between a first end of the welding kit and a busbar. The temperature sensor has an end connected to the first end of the welding kit and another end abut with the busbar. A surface of the busbar away from the temperature sensor abuts with a cell post.

Provided are a liquid cooling assembly, a battery module, and a battery pack. The liquid cooling assembly includes a heat exchange unit and a connecting tube assembly. A respective cylindrical battery column is mounted between two adjacent heat exchange sections of the heat exchange unit. A flow channel of each heat exchange section has a fluid inlet and a fluid outlet. A fluid inlet branch tube of the connecting tube assembly is in communication with multiple fluid inlets. An inlet of the fluid inlet branch tube is disposed away from two heat exchange sections respectively located at two side edges of the multiple heat exchange sections. A fluid outlet branch tube of the connecting tube assembly is in communication with multiple fluid outlets. The fluid outlet branch tube is formed with an outlet.

The present application provides a liquid cooling module and a battery pack. The liquid cooling module includes a second liquid cooling plate and a third liquid cooling plate. A flow channel is arranged in the second liquid cooling plate. The third liquid cooling plate arranged at an interval with the second liquid cooling plate. A first cooling portion is arranged in the third liquid cooling plate, and the first cooling portion is in communication with the flow channel to guide a cooling liquid into the first cooling portion and/or to guide the cooling liquid out of the first cooling portion, thereby simplifying a flow path of the cooling liquid and eliminating the need for bent or excessively long pipelines.

A battery explosion-proof assembly and a battery pack are provided. In the battery explosion-proof assembly, a cover (10) is configured to cover a battery case (40) and defining a through hole (130) capable of being communicated to an outside of the battery case (40). A burst membrane (20) is arranged to cover the through hole (130) and configured to expose the through hole (130) in an event of thermal runaway in the battery case (40), thereby releasing pressure from the battery case (40) through the through hole (130). A flow guiding assembly (30) is arranged on the cover (10), and is in communication with the through hole (130). The flow guiding assembly (30) is configured to guide the gas generated by thermal runaway to the through hole (130) during the thermal runaway in the battery case (40).

The application provides a battery and an electrical device. The battery includes a first cell module, a second cell module and a cooling assembly. The first cell module includes a plurality of first battery cells. The second cell module includes a plurality of second battery cells. The second cell module is arranged opposite to the first cell module. The cooling assembly is located between the first cell module and the second cell module. The cooling assembly includes a heat conductive member, and a first cold plate and a second cold plate that are arranged opposite to each other. The heat conductive member connects the first cold plate and the second cold plate. The first cold plate abuts against the first cell module, and the second cold plate abuts against the second cell module.

The invention provides a battery module (1) and a battery pack (2). The battery module (1) includes a plurality of cells (10), an integrated busbar (20) and a fireproof strip (30). A pressure relief valve (111) is arranged on a top of each cell (10), and the integrated busbar (20) is arranged on a side of all tops of the plurality of cells (10). The fireproof strip (30) is arranged on a side of the integrated busbar (20) away from the cells (10). The fireproof strip (30) is provided with a plurality of through hole (31), and each through hole (31) of the plurality of through holes (31) corresponds to one pressure relief valve (111).

The present application provides a single battery and a battery pack. The single battery includes a cell pack, a casing, an electrode, and a first thermal conductive adhesive. Specifically, the casing includes a shell and a cover plate, the cell pack is accommodated within the shell, and the cover plate is connected to and covers the shell to seal it. The electrode includes a pole and a lead that are electrically connected to each other, the pole is disposed on the cover plate, and an end of the lead away from the pole extends in a length direction of the cell pack and is electrically connected to the cell pack. The first thermal conductive adhesive is disposed between the lead and the inner surface of the shell.

The present application provides an adapter piece structure, a battery cell structure and an assembly process therefor, as well as a battery for large-scale energy storage. The adapter piece structure includes a tab connecting portion and a terminal connecting portion, the tab connecting portion is configured to connect with a tab of a battery cell, and the terminal connecting portion is connected with the tab connecting portion. The terminal connecting portion has a first side, the first side has a clean area provided to be cleaned, and the clean area includes a welding area and an annular area arranged around a circumference of the welding area. The welding area is configured for welding the terminal connecting portion with a terminal of a cover plate.

Provided are a snap-fit structure for a cover plate and a cell bracket, and a battery module, which relate to the technical field of batteries. The snap-fit structure includes a first member (1) and a second member (2). The first member (1) has a clamping hole (11). The clamping hole (11) includes a first hole portion (111), a connecting portion (113) and a second hole portion (112) that are disposed and connected in sequence. The clamping hole (11) is contracted at the connecting portion (113). The second member (2) includes a base (21) and a first snap (22) and a second snap (23) that are disposed on a surface of the base (21). The first snap (22) is engaged with the first hole portion (111), and the second snap (23) is engaged with the second hole portion (112).

The present application provides a battery case and a battery, the battery case includes a case having an inner bottom wall, a first inner side wall and a second inner side wall; a first bracket detachably disposed on the first inner side wall and parallel to the inner bottom wall; a second bracket detachably disposed on the second inner side wall and aligned with the first bracket. The first inner side wall and the second inner side wall are oppositely disposed and connected to the inner bottom wall.

A cell assembly, a battery module, a battery pack and an energy storage system are provided. The cell assembly includes at least two cell units and at least one temperature equalization portion. At least two cell units are arranged at intervals along the Z direction. The temperature equalization portion is provided between two adjacent cell units along the Z direction. Each of the at least one temperature equalization portion is thermally connected to the two adjacent cell units, to equalize the temperatures of the two adjacent cell units.

Provided are a cell bracket and an immersion-type liquid-cooled battery pack. A first surface (4a) of the cell bracket includes a plurality of cell limiting grooves (41) configured to accommodate cells (21) of the battery pack. A protrusion block (42) for supporting a cell (21) is disposed in a respective cell limiting groove (41). In a state where an end surface of the cell (21) abuts against the protrusion block (42), a flow gap (41a) exists between a groove bottom surface of the cell limiting groove (41) and the end surface of the cell (21). The cell bracket further has a second surface (4b) opposite to the first surface (4a). A communication hole (43) penetrating the first surface (4a) and the second surface (4b) is disposed on the cell bracket and is configured to communicate with a liquid hole of a liquid-cooled plate of the battery pack.

The present disclosure relates a battery pack and a vehicle, and relates to the technical field of batteries. The battery pack includes a box (110), a cell module (120), a high-voltage distribution box (160), a battery management system (150), a cells contact system (130), and a total positive and total negative module (140). The cell module (120) is installed in the box (110). The cells contact system (130) includes a high-voltage passage (131) and a low-voltage passage (132), and each cell module (120) is electrically connected to the high-voltage passage (131) and the low-voltage passage (132). The high-voltage passage (131) is electrically connected to the high-voltage distribution box (160) through the total positive and total negative module (140), and the low-voltage passage (132) is electrically connected to the high-voltage distribution box (160) through the battery management system (150).

Provided is a power battery pack. The power battery pack includes a battery cell (1), an electric control module (3), and a casing assembly (2) composed of a lower casing (21) and a protective end cover (22). The lower casing (21) is provided with a receiving groove (211); the protective end cover (22) is configured to enclose the receiving groove (211), an inner wall of the receiving groove (211) is provided with a glue potting structure (212), and the glue potting structure (212) is filled with an insulating gel (4) having a failure temperature lower than the thermal runaway temperature of the battery cell (1); the insulating gel (4) is configured to bond the protective end cover (22) and the lower casing (21) and fix the battery cell (1); and the lower casing is provided with a limit groove (213) communicating with the glue potting structure (212), and a part of the electric control module (3) is accommodated in the limit groove (213).

The application provides a battery pack, which includes at least one battery module (1), an integrated busbar (2) and a first liquid cooling plate (3). The battery module (1) includes a plurality of batteries (11), and the output terminals (110) of the plurality of batteries (11) are located on a same side of the battery module (1). The integrated busbar (2) includes at least one connector (211) connecting the output terminals (110) of two adjacent batteries (11) in the battery module (1). The first liquid cooling plate (3) is arranged on a side of the connector (211) away from the battery module (1). A first liquid cooling channel (31) is arranged in the first liquid cooling plate (2), and the first liquid cooling channel (31) is arranged opposite to the connector (211).