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1. 发明公开

EP4354615A1 BATTERY MODULE, BATTERY PACK, ELECTRIC DEVICE, AND METHOD FOR MANUFACTURING BATTERY MODULE 审中-实审
公开(公告)号：EP4354615A1
公开(公告)日：2024-04-17
申请号：EP21965928.1
申请日：2021-11-30
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Quanguo , YE, Yonghuang , LIU, Qian , HE, Jianfu , XU, Xiaofu
IPC分类号： H01M50/209
CPC分类号： Y02E60/10 , H01M50/209
摘要： The present application provides a battery module. The battery module includes at least two rows of battery cells stacked together along the width direction of the battery cells, the at least two rows of battery cells comprising a first row of battery cells and a second row of battery cells that are adjacent to each other; the first row of battery cells and the second row of battery cells include a plurality of battery cells in total, wherein some of the battery cells in the plurality of battery cells have different lengths from the remaining battery cells, and wherein, along the width direction of the battery cells, a centerline along the length direction of at least one battery cell in the first row of battery cells is not collinear with a centerline along the length direction of at least one battery cell in the second row of battery cells. The present application further provides a battery pack, an electrical apparatus, and a manufacturing method for a battery module.

2. 发明公开

EP4325634A1 BATTERY COOLING DEVICE, BATTERY PACK, ELECTRIC DEVICE, AND METHOD FOR MANUFACTURING BATTERY COOLING DEVICE 审中-实审
公开(公告)号：EP4325634A1
公开(公告)日：2024-02-21
申请号：EP22922613.9
申请日：2022-01-25
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Quanguo , LIU, Qian , YE, Yonghuang , YU, Chunpeng , HUANG, Fajun
IPC分类号： H01M10/613 , H01M10/6568 , H01M10/635 , H01M10/6556
摘要： The present invention relates to a battery cooling device, a battery pack, an electric device, and a method for manufacturing the battery cooling device. A battery cooling device. The battery cooling device comprises: a housing; a cooling channel arranged inside the housing, the cooling channel being used for flow of a cooling fluid and defining a flow direction of the cooling fluid along the cooling channel; a cooling fluid flow adjustment component arranged inside the housing, the adjustment component being deformed from a first opening degree to a second opening degree when a temperature rises, or being deformed from the second opening degree to the first opening degree when the temperature is reduced, wherein a fluid flow under the first opening degree is smaller than a fluid flow under the second opening degree; an adjustment component deformation restriction component arranged inside the housing, the restriction component being deformed from a first configuration to a second configuration when the temperature rises, or being deformed from the second configuration to the first configuration when the temperature is reduced, and the restriction component being positioned immediately adjacent the adjustment component, such that in the first configuration of the restriction component, the deformation of the adjustment component toward the increased opening degree is at least partially hindered by the restriction component, and in the second configuration of the restriction component, the deformation of the adjustment component is basically not hindered by the restriction component, wherein along with the adjustment component being deformed from the first opening degree to the second opening degree, the restriction component changes from the first configuration to the second configuration, and along with the adjustment component being deformed from the second opening degree to the first opening degree, the restriction component changes from the second configuration to the first configuration.

3. 发明公开

EP4228043A1 BATTERY GROUP, BATTERY PACK, ELECTRICAL APPARATUS, MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR BATTERY GROUP, AND CONTROL METHOD FOR BATTERY GROUP 审中-实审
公开(公告)号：EP4228043A1
公开(公告)日：2023-08-16
申请号：EP21962766.8
申请日：2021-11-19
申请人： Contemporary Amperex Technology Co., Limited
发明人： XU, Xiaofu , YE, Yonghuang , ZHANG, Xinyu , PAN, Jianfu , LIU, Qian , LI, Quanguo
IPC分类号： H01M10/0525 , H01M10/42 , H01M10/44
摘要： The present application relates to a battery unit, comprising a first cell type and a second cell type electrically connected at least in series, wherein the first cell type includes N first cells, the second cell type includes M second cells, and N and M are positive integers; the first cell has a discharge cell balance rate of CB1, the second cell has a discharge cell balance rate of CB2, with 0.5 ≤ CB1 ≤ CB2 ≤ 1.4, and when the battery unit is charged to 95%-100% of the state of charge, the first cell has a corresponding open-circuit voltage change rate of not greater than 0.005 V/%SOC, and the second cell type has a corresponding open-circuit voltage change rate greater than that of the first cell.

4. 发明公开

EP4106097A1 BATTERY MODULE, BATTERY PACK, ELECTRICAL APPARATUS, AND MANUFACTURING METHOD AND DEVICE FOR BATTERY MODULE 审中-实审
公开(公告)号：EP4106097A1
公开(公告)日：2022-12-21
申请号：EP21912313.0
申请日：2021-04-30
申请人： Contemporary Amperex Technology Co., Limited
发明人： XU, Xiaofu , HU, Xia , YE, Yonghuang , XU, Guangyu , JIN, Haizu , LIANG, Chengdu , LI, Quanguo
IPC分类号： H01M50/51 , H01M10/42 , H01M50/20
摘要： The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first type of battery cells and the second type of battery cells are battery cells with different chemical systems, the first type of battery cells comprises N first battery cells, and the second type of battery cells comprises M second battery cells, where N and M are integers of no less than 1; and the first battery cells and the second battery cells at least satisfy the following relationships: (1) S1 × CD1 ≤ S2 × CD2; (2) 4.5 × 10 3 ≤ S1 × C1 ≤ 3.6 × 10 4 , in Ah·W·°C/(g·L); and (3) 3 × 10 4 ≤ S2 × CD2 ≤ 8.5 × 10 5 , in Ah·W·°C/(g·L); where S1 is a DSC heat release of a positive electrode plate of the first battery cell per unit mass in a nitrogen atmosphere and a range of from 50°C to 500°C, in W·°C/g; S2 is a DSC heat release of a positive electrode plate of the second battery cell per unit mass in a nitrogen atmosphere and a range of from 50°C to 500°C, in W·°C/g; and CD1 and CD2 are respectively unit volume capacities of the first battery cell and the second battery cell, in Ah/L.

5. 发明公开

EP4398363A1 IONIC COMPOUND, ELECTROLYTE, SECONDARY BATTERY AND ELECTRICAL DEVICE 审中-公开
公开(公告)号：EP4398363A1
公开(公告)日：2024-07-10
申请号：EP22957633.5
申请日：2022-09-05
申请人： Contemporary Amperex Technology Co., Limited
发明人： SUN, Jingxuan , LIU, Qian , LI, Quanguo , WU, Zeli , QIN, Yiming , CHEN, Jiahua , XIAO, Dejun
IPC分类号： H01M10/0566
CPC分类号： H01M10/0566
摘要： The present application relates to an ionic compound, an electrolyte solution, a secondary battery and an electrical apparatus, wherein the ionic compound is represented by formula (1); wherein each R1 is independently selected from alkyl having 1-10 carbon atoms substituted with fluorine or aryl having 6-30 carbon atoms substituted with fluorine, respectively; wherein any two adjacent -OR1 groups and A- can form a ring through the carbon atom in each R1 as a site of attachment; A-represents B- or Si-, and Y+ represents a sodium ion or a potassium ion. The ionic compound can improve the cycling performance of secondary batteries such as sodium-ion batteries and potassium-ion batteries.

6. 发明公开

EP4391206A1 ELECTRIC DEVICE, BATTERY, BATTERY CELL AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：EP4391206A1
公开(公告)日：2024-06-26
申请号：EP22925762.1
申请日：2022-12-29
申请人： Contemporary Amperex Technology Co., Limited
发明人： YU, Chunpeng , LI, Quanguo , LIU, Qian , YE, Yonghuang , XIAO, Dejun
IPC分类号： H01M50/536
CPC分类号： Y02E60/10 , H01M10/0525 , H01M10/058 , H01M4/70 , H01M50/536
摘要： This application relates to an electric device, a battery, and a battery unit and a manufacturing method thereof. The battery unit includes a housing (100), electrode terminals (200), multiple battery cells (300), and current collecting members (400). The electrode terminals (200) are provided at the top of the housing (100). The multiple battery cells (300) are accommodated within the housing (100). At least two of the battery cells (300) have different heights, and the current collecting members (400) are provided within an accommodation space formed by a main body (310) of a shortest battery cell (300) and the top of the housing (100). The battery includes the foregoing battery unit. The electric device includes the foregoing battery. The manufacturing method of the battery unit includes providing current collecting members (400) within an accommodation space formed by a main body (310) of a shortest battery cell (300) and the top of the housing (100). The electric device, battery, and battery unit and manufacturing method thereof improve space utilization and energy density.

7. 发明公开

EP4391171A1 BATTERY PACK AND ELECTRIC APPARATUS 审中-公开
公开(公告)号：EP4391171A1
公开(公告)日：2024-06-26
申请号：EP22908857.0
申请日：2022-01-14
申请人： Contemporary Amperex Technology Co., Limited
发明人： HE, Jianfu , LIU, Qian , YE, Yonghuang , LI, Quanguo , XU, Xiaofu , JIN, Haizu
IPC分类号： H01M50/204
CPC分类号： Y02E60/10 , H01M50/204
摘要： The present application provides a battery pack and a power consuming device. The battery pack includes a battery pack case; and first battery cells and second battery cells that are accommodated in the battery pack case, wherein compared with the second battery cells, the first battery cells are arranged at positions where heat exchange with surroundings is more likely to occur in the battery pack case. It is assumed that the first battery cells each have a capacity C1 and a direct-current impedance R1, wherein X1 = C1*R1, the second battery cells each have a capacity C2 and a direct-current impedance R2, wherein X2 = C2*R2, and X1 and X2 satisfy 1.1 ≤ X1/X2 ≤ 2.0. In this way, the low-temperature discharge capability can be increased.

8. 发明公开

EP4379884A1 SECONDARY BATTERY AND ELECTRIC APPARATUS 审中-实审
公开(公告)号：EP4379884A1
公开(公告)日：2024-06-05
申请号：EP22940511.3
申请日：2022-10-17
申请人： Contemporary Amperex Technology Co., Limited
发明人： XIAO, Dejun , CHEN, Jiahua , LIU, Qian , LI, Quanguo , SUN, Jingxuan
IPC分类号： H01M10/0525 , H01M4/13
摘要： The present application relates to a secondary battery, which includes: a cathode sheet, an anode sheet, and an electrolyte; the cathode sheet includes a cathode film layer containing a cathode active material, and the anode sheet includes an anode film layer containing an anode active material; and the secondary battery meets a following function relationship: 0.22≤ 3× (A1/A2)×(B2-B1)/(B1+B2)≤1.55, the parameters are referred to the description; and an electrical device including the secondary battery. The secondary battery in the present application has both good cycle life and excellent fast charging capacity.

9. 发明公开

EP4358208A1 BATTERY PACK AND ELECTRIC DEVICE THEREOF 审中-实审
公开(公告)号：EP4358208A1
公开(公告)日：2024-04-24
申请号：EP22946286.6
申请日：2022-06-17
申请人： Contemporary Amperex Technology Co., Limited
发明人： SUN, Jingxuan , LIU, Qian , YE, Yonghuang , LI, Quanguo , XU, Xiaofu , WU, Zeli , XIAO, Dejun , YU, Chunpeng
IPC分类号： H01M10/04 , H01M10/056
CPC分类号： Y02E60/10 , H01M10/056 , H01M10/04
摘要： This application relates to a battery pack. The battery pack includes at least a first battery cell and a second battery cell. The battery pack includes a region A and a region B. The region A is a region of a low thermal insulation capability and is located on all sides and/or at a bottom of the battery pack. A remaining region is the region B. A percentage of a number of the first battery cells among battery cells included in the region A is 10% to 100%. A percentage of a number of the second battery cells among battery cells included in the region B is 5% to 100%.
A volumetric energy density D of the first battery cell and a volumetric energy density D of the second battery cell are D1 and D2 respectively. An ionic conductivity σ of an electrolyte solution at -10 °C is σ1 in the first battery cell and σ2 in the second battery cell. It is defined that K = D2 × σ, so that K1 = D12 × σ1 and K2 = D22×σ2.
When D1 = D2, K satisfies 0.2

10. 发明公开

EP4322244A1 NEGATIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC APPARATUS 审中-实审
公开(公告)号：EP4322244A1
公开(公告)日：2024-02-14
申请号：EP22926311.6
申请日：2022-06-27
申请人： Contemporary Amperex Technology Co., Limited
发明人： XIAO, Dejun , YU, Chunpeng , CHEN, Jiahua , LI, Quanguo , SUN, Jingxuan , LIU, Qian
IPC分类号： H01M4/13 , H01M10/0566
摘要： This application relates to a negative electrode plate, including a negative electrode current collector; and a negative electrode film layer located on at least one surface of the negative electrode current collector. The negative electrode film layer includes a middle coating region and edge coating regions located on two opposite sides of the middle coating region. Thickness of the edge coating region in a fully-discharged state is A1, thickness of the edge coating region in a fully-charged state is B1, thickness of the middle coating region in the fully-discharged state is A2, and thickness of the middle coating region in the fully-charged state is B2. A1, A2, B1, and B2 satisfy the following condition: (B1-A1)/A1>(B2-A2)/A2, and B2

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