Laminated battery cell comprising multilayer composite separator and methods for creating the same
    43.
    发明授权
    Laminated battery cell comprising multilayer composite separator and methods for creating the same 有权
    包含多层复合隔板的叠层电池单元及其制造方法

    公开(公告)号:US08697290B2

    公开(公告)日:2014-04-15

    申请号:US12685838

    申请日:2010-01-12

    IPC分类号: H01M2/16 H01M6/46

    摘要: Electrodes with a multilayer or monolayer composite separator are described. The multilayer composite separator comprises multiple individual composite separator layers. Each individual composite separator layer comprises inorganic particulate material(s) and organic polymer(s) with different inorganic particulate material/polymer weight ratios. The multilayer composite separator layer is constructed in a way such that the composite separator layer adjacent to the electrode active material contains a higher weight percentage of the inorganic particulate material and lower weight percentage of the organic polymer than the composite separator layer outermost from the electrode current collector. Laminated cells comprising a positive electrode, a negative electrode, a laminated multilayer or monolayer composite separator layer are described, wherein at least one of the electrodes has a multilayer or monolayer composite separator disposed onto the surface of the electrode. Methods of making such laminated cells are also described.

    摘要翻译: 描述了具有多层或单层复合隔板的电极。 多层复合隔板包括多个单独的复合隔板层。 每个单独的复合隔离层包括具有不同无机颗粒材料/聚合物重量比的无机颗粒材料和有机聚合物。 多层复合隔离层的构造方式使得与电极活性物质相邻的复合隔离层相比电极电流最外层的复合隔离层含有较高重量百分比的无机颗粒材料和较低重量百分比的有机聚合物 集电极。 描述了包括正极,负极,层压多层或单层复合隔离层的层压电池,其中至少一个电极具有设置在电极表面上的多层或单层复合隔板。 还描述了制造这种层压电池的方法。

    PROTECTION CIRCUIT FOR BATTERY MANAGEMENT SYSTEM

    公开(公告)号:US20240113514A1

    公开(公告)日:2024-04-04

    申请号:US18539110

    申请日:2023-12-13

    申请人: A123 Systems LLC

    摘要: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit electrically coupled to the protection circuit, and a battery pack, a positive supply line of the battery pack being electrically coupled to the cutoff circuit, wherein the protection circuit may include each of an input electrically coupled to a control input of the cutoff circuit, an output electrically coupled to an output of the cutoff circuit, and a control input of the protection circuit electrically coupled to the output of the cutoff circuit. In some examples, the protection circuit may further include a low-current leakage transistor configured to maintain the cutoff circuit in an OFF state upon detection of a reverse bias voltage. In this way, the protection circuit may mitigate unexpected switching ON of the cutoff circuit.

    Reverse bias protection circuit for a vehicle battery system

    公开(公告)号:US11881707B2

    公开(公告)日:2024-01-23

    申请号:US17342462

    申请日:2021-06-08

    申请人: A123 Systems LLC

    摘要: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit electrically coupled to the protection circuit, and a battery pack, a positive supply line of the battery pack being electrically coupled to the cutoff circuit, wherein the protection circuit may include each of an input electrically coupled to a control input of the cutoff circuit, an output electrically coupled to an output of the cutoff circuit, and a control input of the protection circuit electrically coupled to the output of the cutoff circuit. In some examples, the protection circuit may further include a low-current leakage transistor configured to maintain the cutoff circuit in an OFF state upon detection of a reverse bias voltage. In this way, the protection circuit may mitigate unexpected switching ON of the cutoff circuit.

    PROTECTION CIRCUIT FOR BATTERY MANAGEMENT SYSTEM

    公开(公告)号:US20210384720A1

    公开(公告)日:2021-12-09

    申请号:US17342462

    申请日:2021-06-08

    申请人: A123 Systems LLC

    IPC分类号: H02H7/18 H02H1/00 B60L50/60

    摘要: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit electrically coupled to the protection circuit, and a battery pack, a positive supply line of the battery pack being electrically coupled to the cutoff circuit, wherein the protection circuit may include each of an input electrically coupled to a control input of the cutoff circuit, an output electrically coupled to an output of the cutoff circuit, and a control input of the protection circuit electrically coupled to the output of the cutoff circuit. In some examples, the protection circuit may further include a low-current leakage transistor configured to maintain the cutoff circuit in an OFF state upon detection of a reverse bias voltage. In this way, the protection circuit may mitigate unexpected switching ON of the cutoff circuit.

    PROTECTION CIRCUIT FOR BATTERY MANAGEMENT SYSTEM

    公开(公告)号:US20210384560A1

    公开(公告)日:2021-12-09

    申请号:US17342447

    申请日:2021-06-08

    申请人: A123 Systems, LLC

    IPC分类号: H01M10/42 B60L58/10

    摘要: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit coupled to a short-circuit protection circuit, and a battery pack, wherein the short-circuit protection circuit may include a diode array, cathodes of the diode array being coupled to a positive terminal post of the battery pack and anodes of the diode array being coupled to a negative terminal post of the battery pack. In some examples, the cutoff circuit may further be coupled to a reverse bias protection circuit including a switchable current path arranged between a control input of the cutoff circuit and an output of the cutoff circuit. In this way, the vehicle battery system may be protected from unexpected voltage conditions via the BMS redirecting and dissipating excess current away from the cutoff circuit.