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1. 发明公开

EP4343942A2 POWER BATTERY PACK AND ELECTRIC VEHICLE 审中-公开
公开(公告)号：EP4343942A2
公开(公告)日：2024-03-27
申请号：EP23220620.1
申请日：2019-06-21
申请人： BYD Company Limited
发明人： HE, Long , SUN, Huajun , JIANG, Wenfeng , LU, Zhipei , ZHENG, Weixin , TANG, Jianglong , ZHU, Yan , WANG, Xinyue , HE, Kefeng
IPC分类号： H01M50/249
摘要： Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body, where an accommodating space is defined in the pack body, the pack body is provided therein with at least one widthwise cross beam or lengthwise cross beam, the widthwise cross beam extends along a width direction of the power battery pack, the lengthwise cross beam extends along a length direction of the power battery pack, and the accommodating space is divided into a plurality of accommodating chambers by the at least one widthwise cross beam or lengthwise cross beam; and a plurality of cells, disposed in the pack body and directly arranged in the accommodating chambers, where at least one cell is arranged in each accommodating chamber to form a cell array. The power battery pack according to the embodiments of this application has advantages of high space utilization, large energy density, long battery life, high reliability, low costs, high quality, and the like.

2. 发明公开

EP4155120A1 POWER BATTERY HEATING METHOD FOR ELECTRIC AUTOMOBILE, DEVICE, AND AUTOMOBILE 审中-实审
公开(公告)号：EP4155120A1
公开(公告)日：2023-03-29
申请号：EP21814346.9
申请日：2021-05-25
申请人： BYD Company Limited
发明人： HE, Long , DENG, Linwang , FENG, Tianyu , LIU, Sijia
IPC分类号： B60L58/27 , B60L58/00 , B60L58/10 , B60L58/24 , H01M10/615 , H01M10/625 , H01M10/6571 , H01M10/637
摘要： The present disclosure discloses a power battery heating method and device for an electric vehicle and a vehicle. The method includes: acquiring a heating power demand of a power battery; acquiring power demand information of a driving module of the electric vehicle in real time, and determining a current heating power of the power battery according to the power demand information; acquiring a compensating heating current according to the heating power demand and the current heating power when the current heating power is less than the heating power demand; causing, during control of the driving motor to drive the electric vehicle into operation according to the power demand information by the motor controller, the motor controller to regulate a control current of the driving motor according to the compensating heating current, so that the driving motor outputs a high-frequency oscillation current equal to the compensating heating current; and causing the power battery to perform self-heating according to the high-frequency oscillation current outputted by the driving motor. According to the present disclosure, the high-frequency oscillation current outputted by the driving motor is increased to satisfy a self-heating demand of the power battery while it is ensured that the power demand information is satisfied, thereby improving the heating rate and efficiency.

3. 发明公开

EP4084203A1 BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC VEHICLE 审中-实审
公开(公告)号：EP4084203A1
公开(公告)日：2022-11-02
申请号：EP21741556.1
申请日：2021-01-04
申请人： BYD Company Limited
发明人： HE, Long , SUN, Huajun , HU, Shichao , YUAN, Wansong , ZHU, Yan
IPC分类号： H01M50/242
摘要： A battery, a battery module, a battery pack, and an electric vehicle are provided. The battery includes a metal shell (11) and a plurality of electrode core assemblies (12) sealed in the metal shell (11) and arranged in sequence. The electrode core assemblies (12) are connected in series. Each of the electrode core assemblies (12) includes at least one electrode core. The electrode core assemblies (12) are sealed in a packaging film (13). An air pressure between the metal shell (11) and the packaging film (13) is lower than an air pressure outside the metal shell (11). An air pressure inside the packaging film (13) is lower than the air pressure between the metal shell (11) and the packaging film (13).

4. 发明公开

EP3907776A1 BATTERY PACK AND ELECTRIC VEHICLE 审中-实审
公开(公告)号：EP3907776A1
公开(公告)日：2021-11-10
申请号：EP19909472.3
申请日：2019-06-21
申请人： BYD Company Limited
发明人： HE, Long , SUN, Huajun , JIANG, Wenfeng , LU, Zhipei , ZHENG, Weixin , TANG, Jianglong , ZHU, Yan , WANG, Xinyue , HE, Kefeng
IPC分类号： H01M2/10 , H01M10/613 , H01M10/625 , H01M10/6554 , H01M10/6556 , H01M10/6568 , B60L50/64
摘要： A battery pack and an electric vehicle are provided. The battery pack includes a housing; and a plurality of cells, provided in the housing, wherein the sum V1 of the volumes of the plurality of cells and the volume V2 of the battery pack satisfy V1/V2≥55%. The battery pack has a first direction and a second direction perpendicular to each other. A length direction of the cell is arranged along the first direction of the battery pack, and the plurality of cells are arranged along the second direction of the battery pack. The cell comprises a cell body, and the length of the cell body is 400-2500 mm.

5. 发明公开

EP3726625A1 BATTERY SYSTEM AND ELECTRIC AUTOMOBILE 审中-公开
公开(公告)号：EP3726625A1
公开(公告)日：2020-10-21
申请号：EP18888794.7
申请日：2018-12-13
申请人： BYD Company Limited
发明人： HE, Long , SHEN, Xi , JIANG, Luxia , JIANG, Wenfeng
IPC分类号： H01M2/34
摘要： A battery system and an electric vehicle are disclosed. The battery system includes at least one series circuit, a pouch battery and at least one first cell connected to the pouch battery in series being disposed in the series circuit, and a current interrupt device being disposed on the first cell; and the current interrupt device of the first cell being configured to interrupt an internal current of the first cell when at least one of the pouch battery and the first cell is abnormal.

6. 发明授权

EP3357109B1 COMPOSITE FILM, METHOD FOR PREPARING THE SAME AND LITHIUM BATTERY COMPRISING SAID COMPOSITE FILM 有权
公开(公告)号：EP3357109B1
公开(公告)日：2020-02-05
申请号：EP16874876.2
申请日：2016-12-15
申请人： BYD Company Limited
发明人： FENG, Dali , SONG, Wei , HU, Jialing , JIN, Lina , SHAN, Jun , HE, Long
IPC分类号： H01M2/14 , H01M2/16 , D01D5/00 , D01F6/74 , H01M10/052 , D01F6/18 , D01F6/76

7. 发明公开

EP3493297A1 POLYMER COMPOSITE FILM AND PREPARATION METHOD THEREFOR AND LITHIUM ION BATTERY COMPRISING THE POLYMER COMPOSITE FILM 有权
公开(公告)号：EP3493297A1
公开(公告)日：2019-06-05
申请号：EP17845206.6
申请日：2017-08-14
申请人： BYD Company Limited
发明人： HU, Jialing , SHAN, Jun , WU, Jinxiang , HE, Long
IPC分类号： H01M2/16 , H01M2/14 , H01M10/052
摘要： The disclosure relates to the field of lithium-ion batteries, and discloses a polymer composite membrane and a method for preparing same. The disclosure further includes a lithium-ion battery for which the foregoing polymer composite membrane is used. The polymer composite membrane includes a porous base membrane and a heat-resistant fiber layer covering at least one side surface of the porous base membrane, where materials of the heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

8. 发明公开

EP3490031A1 LITHIUM ION BATTERY SEPARATOR AND PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY 审中-公开
公开(公告)号：EP3490031A1
公开(公告)日：2019-05-29
申请号：EP17845205.8
申请日：2017-08-14
申请人： BYD Company Limited
发明人： HU, Jialing , LIU, Ronghua , SHAN, Jun , HE, Long
IPC分类号： H01M2/14 , H01M2/16 , H01M10/052
摘要： The disclosure relates to the field of lithium-ion batteries, and discloses a lithium-ion battery separator, a method for preparing same, and a lithium-ion battery. The lithium-ion battery separator includes: a porous basement membrane, and a heat-resistant layer covering at least one side surface of the porous basement membrane, where the heat-resistant layer contains a high-temperature-resistant polymer and inorganic nanometer particles; and the heat-resistant layer has a fiber-network shaped structure.

9. 发明公开

EP3089355A1 DUAL-GLASS PHOTOVOLTAIC CELL MODULE 审中-公开
标题翻译： DOPPELGLAS-PHOTOVOLTAIKMODUL
公开(公告)号：EP3089355A1
公开(公告)日：2016-11-02
申请号：EP14875670.3
申请日：2014-08-15
申请人： BYD Company Limited
发明人： WANG, Shencun , SUN, Xiang , JIANG, Zhanfeng , HE, Long
IPC分类号： H02S30/10 , H01L31/048 , H01L31/052
CPC分类号： H01L31/0488 , H01L31/0543 , H02S30/10 , H02S40/34 , Y02E10/52
摘要： A double-glass photovoltaic cell module includes: a body (1), where the body (1) includes a first glass layer (11), a first encapsulation layer (12), a cell group layer (13), a second encapsulation layer (14), and a second glass layer (15) that are sequentially disposed in a laminated manner, where outer edges of the first glass layer (11) and the second glass layer (15) exceed an outer edge of the cell group layer (13); a reflecting coating provided on the second glass layer (15); an end part sealing block, disposed between the first glass layer (11) and the second glass layer (15), and located at peripheries of the first encapsulation layer (12), the cell group layer (13), and the second encapsulation layer (14); a frame (6), encapsulated at a periphery of the body and having a notch (60); and a connection box (4), disposed at the notch (60).
摘要翻译：双玻璃光伏电池模块包括：主体（1），其中主体（1）包括第一玻璃层（11），第一封装层（12），单元组层（13），第二封装层（14）和第一玻璃层（11）和第二玻璃层（15）的外边缘超过单元组层的外边缘的层叠方式依次设置的第二玻璃层（15） 13）; 设置在所述第二玻璃层（15）上的反射涂层; 设置在第一玻璃层（11）和第二玻璃层（15）之间并位于第一封装层（12），电池组层（13）和第二封装层（12）的周围的端部密封块（14）; 框架（6），其封装在所述主体的周边并具有凹口（60）; 以及设置在所述凹口（60）处的接线盒（4）。

10. 发明公开

EP3089220A1 PHOTOVOLTAIC CELL MODULE 审中-公开
标题翻译： PHOTOVOLTAIKZELLENMODUL
公开(公告)号：EP3089220A1
公开(公告)日：2016-11-02
申请号：EP14875282.7
申请日：2014-08-15
申请人： BYD Company Limited
发明人： WANG, Shencun , SUN, Xiang , JIANG, Zhanfeng , HE, Long
IPC分类号： H01L31/048
CPC分类号： H01L31/0488 , H01L31/0201 , H01L31/048 , H01L31/0481 , H02S30/10 , H02S40/34 , Y02E10/50
摘要： A photovoltaic cell module includes: a transparent upper cover plate, a first liquid silica-gel encapsulation layer, a cell group layer, a second liquid silica-gel encapsulation layer, and a backplane that are sequentially disposed in a laminated manner, where outer edges of the transparent upper cover plate and the backplane exceed outer edges of the first liquid silica-gel encapsulation layer, the cell group layer, and the second liquid silica-gel encapsulation layer, an end part sealing block is further disposed between the transparent upper cover plate and the backplane, and the end part sealing block is located at peripheries of the first liquid silica-gel encapsulation layer, the cell group layer, and the second liquid silica-gel encapsulation layer.
摘要翻译：光伏电池模块包括：以层叠方式依次布置的透明上盖板，第一液体硅胶封装层，单元组层，第二液体硅胶封装层和背板，其中外边缘透明上盖板和底板超过第一液体硅胶封装层，电池组层和第二液体硅胶封装层的外边缘，端部密封块还设置在透明上盖板板和背板，端部密封块位于第一液体硅胶封装层，电池组层和第二液体硅胶封装层的周边。

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