EVE Energy Patente

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).

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).

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.

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).

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.

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 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 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).

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 present application provides a pole piece, a preparation method thereof and a battery. The pole piece includes a current collector and a composite layer, and the composite layer is disposed on the current collector. The composite layer includes a first active material layer, and the first active material layer has a first surface away from the current collector. A recess extending from the first surface to inside of the first active material layer is defined on the first active material layer.

Disclosed in the present disclosure is a battery assembly, including: a battery row unit (1) having a plurality of arranged battery cells; a heat exchange element (2) extending along a first direction, where the first direction is an arrangement direction of the plurality of battery cells (11), and the heat exchange element (2) is configured to cool each battery cell (11); and a heating element (3) mounted on the heat exchange element (2), in close contact with each battery cell (11) and configured to heat each battery cell (11). Meanwhile, further disclosed is a battery pack using the battery assembly, which achieves the purpose of quickly adjusting the battery cells (11) within an optimal temperature range on the premise of a simplified structure.

Provided is a battery pack including: a case, cell modules, first electrical connection member(s), and a second electrical connection member (s). The case includes a receiving cavity, and first opening(s) and second opening(s) in communication with the receiving cavity. The cell modules are stacked in the receiving cavity; each cell module includes a first electrical connection end and a second electrical connection end disposed opposite to each other. The first electrical connection member is connected to first electrical connection ends of two adjacent cell modules. A portion of the first electrical connection member connected to the first electrical connection ends is exposed through the first opening. The second electrical connection member is connected to second electrical connection ends of two adjacent cell modules. A part of the second electrical connection member connected to the second electrical connection ends is exposed through the second opening.

A top cover assembly, a battery cell, and a battery pack are provided in this application. The top cover assembly includes a cover plate, a terminal plate, and a sealant. A through hole is formed through the cover plate. The through hole is configured to be in communication with an interior of the battery cell. The terminal plate is installed on the cover plate and covers the through hole. A first overflow groove is formed in the terminal plate at a position corresponding to the through hole, and a groove opening of the first overflow groove faces the through hole. The sealant is interposed between the cover plate and the terminal plate, and the sealant is partially filled into the first overflow groove.

A battery box and a battery pack, wherein the battery box comprises a box body (10) having a frame and a bottom plate (12), wherein the frame and the bottom plate (12) are enclosed to form an accommodating cavity (11), and the accommodating cavity (11) is used for accommodating cells (20); a bracket (30) disposed in the accommodating cavity (11), the bracket (30) is used for bearing the cells; and a supporting member for supporting the bracket (30), so as to form a pressure relief space (13) between the bracket (30) and the bottom plate (12).

The application discloses a power limiting method for a power battery, including steps of: acquiring a real-time voltage of the power battery during charging and discharging processes of the power battery; performing a current limiting operation on the power battery when the real-time voltage exceeds a voltage allowable range, wherein an upper limit of the allowable voltage range is less than a high voltage protection threshold of the power battery, and a lower limit of the allowable voltage range is greater than a low voltage protection threshold of the power battery; ceasing the current limiting operation after the real-time voltage recovers to be in a voltage recovery range, wherein the voltage recovery range is within the voltage allowable range and is smaller than the voltage allowable range.

A beam structure, being configured for a battery pack, comprising an expansion-resistant beam (310), a first side of the expansion-resistant beam (310) being configured to abut against a battery cell of the battery pack; and a frame beam (320) being connected to a second side of the expansion-resistant beam (310), the frame beam (320) being located at a outermost side of a box body of the battery pack to serve as a side frame of the box body; wherein the expansion-resistant beam (310) and the frame beam (320) are integrally arranged.

A voltage detection circuit (1) and a voltage detection method are provided. The voltage detection circuit (1) includes a voltage conversion module (10), a logic processing module (20), and a high-side driver module (30). The voltage conversion module (10) is configured to convert an analog signal corresponding to a target voltage of a target battery cell into a target voltage digital quantity. The logic processing module (20) is connected to the voltage conversion module (10) and configured to output a target signal to the high-side driver module (30) based on a comparison detection result between a preset threshold and the target voltage digital quantity. The high-side driver module (30) is connected to the logic processing module (20) and configured to determine whether to cut off an external power supply based on the target signal.

A case of a battery pack, a battery pack, and a vehicle are provided. The case of the battery pack includes a side beam and a mounting block. A side wall of the side beam is provided with a mounting groove. At least a part of the mounting block being accommodated within the mounting groove. The mounting block is fixedly connected to the side beam, and is configured to be connected to an external device.

A current detection circuit (1) and a current detection method are provided. The current detection circuit (1) comprises a current conversion module (10), a logic processing module (20), and a high-side driver module (30). The current conversion module (10) is configured to convert an analog signal corresponding to the target current of a target battery cell into a target current digital quantity. The logic processing module (20) is connected to the current conversion module (10) and configured to output a target signal to the high-side driver module (30) based on a comparison detection result between a preset threshold value and the target current digital quantity. The high-side driver module (30) is connected to the logic processing module (20) and configured to determine whether to cut off an external power supply based on the target signal.

A method for processing an event message in an in-vehicle network is provided. The method includes: acquiring (101) a plurality of event message signals associated with the event message, each event message signal carried in a separate frame; determining (102) whether the event message is valid based on an accumulation rate of the number of valid signals within the plurality of event message signals; and executing (103) logic corresponding to the event message in response to determining that the event message is valid.

An immersion liquid cooling box and a battery pack are provided in this application. The immersion liquid cooling box includes a box body. An immersion chamber for placing battery cells are formed in the box body. A liquid inlet and a liquid outlet of the immersion chamber are formed on an outer surface of the box body. The liquid inlet and the liquid outlet are formed on two opposite sides of the box body in a width direction.

Provided are a battery pack explosion-proof structure, a battery pack, and an electric vehicle. The battery pack explosion-proof structure includes a bottom cover plate (10) and an explosion-proof valve (20). The bottom cover plate (10) includes a cover plate body (11) and an exhaust pipe (12) that are integrally formed. The exhaust pipe (12) is disposed on a side of the cover plate body (11) and extends in a direction away from the cover plate body (11). The gas inlet (121) of the exhaust pipe (12) is opened in the cover plate body (11). The explosion-proof valve (20) is connected to a side of the cover plate body (11) away from the exhaust pipe (12). A valve port (21211) of the explosion-proof valve (20) is directly opposite to the gas inlet (121) or is connected into the exhaust pipe (12).

A battery housing (100) and a battery pack are disclosed. The battery housing (100) includes a main body (10), a cover (20), and a shell cover assembly (30). The main body (10) defines a battery compartment receiving battery units (300) of the battery pack. The cover (20) is connected to the main body (10) and seals the battery compartment. The shell cover assembly (30) is connected to a side of the cover (20) opposite the battery compartment and forms an electrical compartment (301) receiving electrical units (200) of the battery pack. The cover (20) includes an opening (201) corresponding to the electrical compartment (301), the opening (201) communicates the battery compartment and the electrical compartment (301). The battery units (300) are arranged along the length and width directions of the battery housing (100), while the electrical units (200) and the battery units (300) are arranged along the thickness direction of the battery housing (100).

An information acquisition assembly (4) includes a circuit board and a conductive bar. The circuit board includes a circuit board body (1) and a plurality of circuit board branches (2). The conductive bar includes a plurality of conductive components (3). At least one of the circuit board branches (2) is electrically connected between the circuit board body (1) and one of the conductive components(3), and is separate from the circuit board body (1) and the one of the conductive components (3).

A battery pack is provided. The battery pack includes a housing (1), a battery cell group (2), and a plurality of reinforcing plates (3). Each of the plurality of reinforcing plates (3) includes a foam adhesive layer and a fiberglass cloth layer. The foam adhesive layer encapsulates the fiberglass cloth layer. The battery cell group (2) is arranged in the housing (1). Each of two side walls of the battery cell group (2) along a length direction of the battery cell group (2) is arranged with a corresponding one of the plurality of reinforcing plates (3). The foam adhesive layer is attached to a corresponding one of the two side walls of the battery cell group (2).

A semi-solid battery electrolyte precursor, a semi-solid battery electrolyte, a semi-solid battery, and a preparation method of the semi-solid battery are provided. The semi-solid battery electrolyte precursor includes a first polymer monomer, a second polymer monomer, and an initiator. The first polymer monomer is an acrylic acid monomer or an acrylate monomer. The second polymer monomer is a fluorine-containing unsaturated monomer.

The present application discloses a connecting terminal for acquisition wire harness, a battery module, and a power-consuming device. The connecting terminal for acquisition wire harness includes an intermediate connecting portion, a wire harness connecting portion, and a busbar connecting portion. The intermediate connecting portion is fixedly connected to the wire harness connecting portion and the busbar connecting portion. The wire harness connecting portion and the acquisition wire harness are pressed and fixed. The busbar connecting portion is clampable to an accommodating portion preset on a busbar.

The present disclosure provides a battery module. The battery module includes a plurality of battery cells and an exhaust structure. The extension portions of the exhaust structure are provided to be fixedly connected with the plurality of busbars. By connecting the extension portions to the busbars, the exhaust structure is fixed on the top of the battery cells. The exhaust structure is integrally mounted on top of the battery cells, resulting in a structurally stable battery module. Meanwhile, mutual clearance between the busbars and the exhaust structure is avoided, facilitating subsequent connections between the busbars and the negative and positive electrodes, as well as facilitating subsequent sealing connection of the exhaust structure to the explosion-proof valves.

A battery case and a battery pack are provided. The battery case includes a top cover, a case body, and a pressing frame. The case body and the top cover cooperatively define an accommodating space configured to accommodate a battery module. The pressing frame is connected to the case body. At least a portion of the pressing frame abuts against a top portion of the battery module and presses the battery module toward a bottom portion of the case body.

The present application provides a battery thermal runaway warning method and apparatus, an electronic device and a storage medium. With the method, electrical performance data sequences of a battery to be detected are obtained, filtering and detection processing is performed on the electrical performance data sequences to obtain filtered electrical performance data, it is determined whether the battery meets a preset alarm condition based on the filtered electrical performance data, and a warning signal is output when the battery meets the preset alarm condition, thereby improving the accuracy and effectiveness of the warning of thermal runaway of the battery.

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