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1. 发明公开

EP3734746A1 THERMAL RUNAWAY DETECTION CIRCUIT AND METHOD 有权转让
公开(公告)号：EP3734746A1
公开(公告)日：2020-11-04
申请号：EP19196066.5
申请日：2019-09-06
申请人： Contemporary Amperex Technology Co., Limited
发明人： WANG, Xiao , ZENG, Chao , XU, Jia , DAN, Zhimin , HOU, Yizhen , ZHANG, Wei , HU, Guoliang
IPC分类号： H01M10/48 , H01M10/42 , H02J7/00 , H01M10/657 , G01R15/04
摘要： The disclosure provides a thermal runaway detection circuit and method, and relates to batteries. The thermal runaway detection circuit includes: a sensing module (P1) including a sensing cable, wherein a distance between at least a portion of the sensing cable and a cell of a battery pack is less than a temperature sensitive distance threshold; a detection module (P2) connected to the sensing cable and including at least one set of voltage dividing resistors, wherein one end of each set of voltage dividing resistors is connected to a first power supply terminal (VI), and the other end of each set of voltage dividing resistors is connected to the ground, and each set of voltage dividing resistors includes at least two voltage dividing resistor sets connected in series; a processing module (P3) connected to the detection module (P2), wherein the processing module (P3) is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data, wherein the thermal runaway detection data includes battery pack data and sampled data collected from sampling points, and the sampling points are disposed between the two connected voltage dividing resistor sets. The technical solutions in the present disclosure can improve safety of the battery pack.

2. 发明公开

EP3796416A1 BATTERY PACK 有权转让
公开(公告)号：EP3796416A1
公开(公告)日：2021-03-24
申请号：EP19926776.6
申请日：2019-07-02
申请人： Contemporary Amperex Technology Co., Limited
发明人： ZHU, Xianchun , ZENG, Chao , CAO, Hua
IPC分类号： H01M2/12 , H01M2/34 , H01M10/48 , H01M10/42
摘要： The present application relates to the field of energy storage devices, and in particular to a battery pack. The battery pack comprises: two or more battery modules, each of the battery modules comprising a plurality of battery cells which are stacked in sequence, wherein each of the battery cells is provided with an explosion-proof valve; the battery pack further comprising a thermal alarm device and a battery management system, wherein the thermal alarm device is arranged corresponding to the explosion-proof valve; the thermal alarm device and the battery management system are connected to form a circuit; and a break of the circuit can be caused when the explosion-proof valve is exploded. The present application provides the thermal alarm device to correspond to the explosion-proof valve, and when thermal runaway occurs in the battery module, a circuit break is formed between the thermal alarm device and the battery management system, thus the thermal runaway status of the battery pack can be accurately reflected, and the safety of the battery is enhanced.

3. 发明公开

EP4395110A1 CHARGING METHOD AND APPARATUS, AND ELECTRONIC DEVICE AND STORAGE MEDIUM 审中-实审
公开(公告)号：EP4395110A1
公开(公告)日：2024-07-03
申请号：EP22942021.1
申请日：2022-05-18
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Zhiqiang , ZENG, Chao , LUO, Shaohua , WANG, Shengwei
IPC分类号： H02J7/00
CPC分类号： H02J7/00
摘要： Disclosed in the present application are a charging method and apparatus, and an electronic device and a storage medium. The method comprises: acquiring a charging parameter of each battery module in a battery pack in the current charging mode, wherein the battery pack has a plurality of battery modules, and the current charging mode comprises a series charging mode; and if it is determined, on the basis of the charging parameters of the battery modules, that any two battery modules meet a charging conversion condition, then controlling the plurality of battery modules to be switched from the series charging mode to a parallel charging mode. In this way, conversion from series charging to parallel charging is realized before charging and discharging currents of a battery pack become excessive, such that the risk of lithium precipitation of a battery is reduced, and the charging safety of the battery pack is improved.

4. 发明公开

EP3734747A1 BATTERY MODULE AND BATTERY PACK 有权转让
公开(公告)号：EP3734747A1
公开(公告)日：2020-11-04
申请号：EP19210175.6
申请日：2019-11-19
申请人： Contemporary Amperex Technology Co., Limited
发明人： HU, Guoliang , ZENG, Chao , ZHU, Xianchun , YANG, Quan
IPC分类号： H01M10/48 , H01M2/10
摘要： The present disclosure relates to a battery module and a battery pack. The battery module (1) includes a plurality of secondary batteries (11) arranged side by side, each of which includes a vent (111); a monitoring assembly (12), disposed above the plurality of secondary batteries (11) and including a base plate (121) and a monitoring wire (122), wherein the monitoring wire (122) is coupled to the base plate (121); the monitoring wire (122) is disposed corresponding to positions of the vents (111) of the plurality of secondary batteries (11), and can be broken off when any of the vents (111) bursts, so as to monitor a state of the battery module (1). The battery module according to the embodiments of the present disclosure can monitor the secondary batteries in real time, and send out a bursting signal when any of the secondary batteries bursts, thereby improving use safety of the battery module.

5. 发明公开

EP4401198A1 HOLDER FOR BATTERY CELL, AND BATTERY CELL, BATTERY AND ELECTRIC DEVICE 审中-实审
公开(公告)号：EP4401198A1
公开(公告)日：2024-07-17
申请号：EP23755733.5
申请日：2023-02-09
申请人： Contemporary Amperex Technology Co., Limited
发明人： ZENG, Chao , LI, Zhiqiang , CHEN, Qingrong , WANG, Shengwei
IPC分类号： H01M10/617 , H01M50/103
CPC分类号： H01M50/103 , H01M10/617 , H01M10/654 , H01M10/625 , H01M10/647 , H01M10/613 , Y02E60/10
摘要： This application relates to a bottom support for battery cell, a battery cell, a battery, and an electric device. The bottom support is configured for supporting a jelly roll, and the bottom support includes a bottom plate, where the bottom plate includes a central region and a peripheral region surrounding the central region. The bottom plate is constructed to form at least one recessed group, and a recessed area increases gradually among the recessed group(s) in a direction from the peripheral region to the central region of the bottom plate. The bottom support for battery cell, the battery cell, the battery, and the electric device provided in this application reduce the probability of thermal runaway in the battery cell.

6. 发明公开

EP3920306A1 BATTERY MODULE 有权转让
公开(公告)号：EP3920306A1
公开(公告)日：2021-12-08
申请号：EP19927371.5
申请日：2019-07-01
申请人： Contemporary Amperex Technology Co., Limited
发明人： HU, Guoliang , ZENG, Chao , CHEN, Shaozhen , YANG, Quan
IPC分类号： H01M10/42 , H01M10/48 , H01M2/12
摘要： The present application relates to a battery module, which may include: a plurality of secondary batteries disposed in a row, the plurality of secondary batteries are provided with explosion-proof valves; an insulating plate disposed above the secondary batteries; a monitoring cable set connected with the insulating plate, and the monitoring cable set is corresponding to a position of each of the explosion-proof valves; the monitoring cable set comprises two monitoring cables, and the monitoring cables includes wires and thermomelting insulating layers cladding the wires; when the explosion-proof valve of any of the secondary batteries explodes, the thermomelting insulating layers of the two monitoring cables melt, and two wires are in contact with each other and short-circuited. The battery module according to embodiments of the present application is able to monitor the working state of the secondary battery, and improve the safety during the use of the battery module.

7. 发明公开

EP3800725A1 THERMAL RUNAWAY DETECTION METHOD, DEVICE AND SYSTEM FOR BATTERIES, AND BATTERY MANAGEMENT UNIT 有权转让
公开(公告)号：EP3800725A1
公开(公告)日：2021-04-07
申请号：EP19926818.6
申请日：2019-08-13
申请人： Contemporary Amperex Technology Co., Limited
发明人： WANG, Xiao , ZENG, Chao , XU, Jia , DAN, Zhimin , HOU, Yizhen , ZHANG, Wei , HU, Guoliang
IPC分类号： H01M10/42
摘要： This application provides a method, an apparatus, a system for detecting battery thermal runaway, and a battery management unit. The method for detecting battery thermal runaway includes: obtaining an output signal of an air pressure sensor provided in a battery pack, and obtaining parameter information of the battery pack; determining state information of the air pressure sensor based on the output signal of the air pressure sensor; and generating an alarm signal indicating occurrence of thermal runaway in the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack. In this application, the thermal runaway detection for the battery pack may be implemented by considering parameter information of both the air pressure sensor and the battery pack, improving the reliability of the thermal runaway detection for the battery pack, reducing the probability of false positives and false negatives, and improving driving safety.

8. 发明公开

EP3761397A1 BATTERY MODULE AND BATTERY PACK 有权转让
公开(公告)号：EP3761397A1
公开(公告)日：2021-01-06
申请号：EP19912228.4
申请日：2019-09-23
申请人： Contemporary Amperex Technology Co., Limited
发明人： ZHU, Xianchun , ZENG, Chao , CAO, Hua , WANG, Chong
IPC分类号： H01M2/12 , H01M10/42
摘要： This application discloses a battery module and a battery pack. The battery module includes: a battery set including a plurality of batteries arranged in an array, each of the batteries includes an explosion-proof valve; a cover plate disposed on the battery set; and a thermosensitive assembly disposed between the battery set and the cover plate, the thermosensitive assembly being connected with the cover plate, the thermosensitive assembly including a thermosensitive wire, and thermosensitive wire can provide a prompt signal indicating that the explosion-proof valve of the battery is burst. The battery module according to embodiments of the present disclosure can accurately and effectively transmit the information regarding thermal runaway occurring in the battery to the outside, such that the battery module has a performance of alerting the thermal runaway. ( Fig. 2 )

9. 发明公开

EP3734308A1 THERMAL RUNAWAY DETECTION CIRCUIT AND METHOD 有权转让
公开(公告)号：EP3734308A1
公开(公告)日：2020-11-04
申请号：EP19198158.8
申请日：2019-09-18
申请人： Contemporary Amperex Technology Co., Limited
发明人： DAN, Zhimin , ZENG, Chao , WANG, Xiao , XU, Jia , HOU, Yizhen , ZHANG, Wei , HU, Guoliang
IPC分类号： G01R31/392 , H01M2/34 , H01M10/48
摘要： The present disclosure provides a thermal runaway detection circuit and a method, which is directed to field of batteries. The thermal runaway detection circuit includes: a sensing module (P1) including a terminating resistor (R3), wherein the terminating resistor (R3) is connected to a temperature sensitive cable (A, B), and wherein a distance between at least a portion of the temperature sensitive cable (A, B) and a cell of a battery pack is less than a temperature sensitive distance threshold; a detection module (P2) including a first voltage dividing resistor set (R1) and a second voltage dividing resistor set (R2), wherein the first voltage dividing resistor set (R1), the terminating resistor (R3), and the second voltage dividing resistor set (R2) are connected in series via the temperature sensitive cable (A, B), and wherein one end of the first voltage dividing resistor set (R1) is connected to a first power supply terminal (V1), and one end of the second voltage dividing resistor set (R2) is connected to ground; and a processing module (P3) connected to the detection module (P2), wherein the processing module (P3) is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data. The thermal runaway detection data includes first sampled data and second sampled data. The technical solutions in the present disclosure can improve safety of the battery pack.

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