Patents Assigned to CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED
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Publication number: 20220021084Abstract: The invention relates to the technical field of batteries, and provides a battery and a manufacturing method of battery. The battery includes a main body portion and a tab. The tab is arranged on the main body portion. The tab includes a first welding mark and a second welding mark. The second welding mark covers at least a part of the first welding mark. By forming the first welding mark and the second welding mark on the tab, and the second welding mark covers at least part of the first welding mark, that is, when the tab is welded with the cover element, the tab is welded twice.Type: ApplicationFiled: January 19, 2021Publication date: January 20, 2022Applicants: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED, CALB Technology Co., Ltd.Inventors: Binwei Qi, Yongjie Zhang, Jiuling Xu
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Publication number: 20210399388Abstract: The disclosure discloses a battery module. The electrical connection between a first electrode of a first battery and a second electrode of a second battery can be realized by setting a jumper electrode connector, thereby facilitating realization of connection relationship of multiple batteries. Moreover, an insulating structure is provided between the jumper electrode connector and the battery. Also, the jumper electrode connector includes a first through hole, the orthographic projection of the first through hole and the orthographic projection of the explosion-proof valve at least partially overlap each other, and the orthographic projection of the first through hole overlaps the orthographic projection of the insulating structure.Type: ApplicationFiled: December 30, 2020Publication date: December 23, 2021Applicants: CALB Technology Co., Ltd., CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Keqiang Cheng, Xiaoyuan Du, Yong Cao
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Publication number: 20210399377Abstract: A battery module includes a jumper electrode connector a neighbor electrode connector, and batteries. The jumper electrode connector is configured for the electrical connection between the batteries arranged at intervals, and the neighbor is configured for the electrical connection between the adjacent batteries, thereby realizing the connection relationship of the batteries in the battery module. The jumper electrode connector is formed with a notch in a first direction and toward an outside of the battery module, and the neighbor electrode connector is arranged in the notch.Type: ApplicationFiled: January 4, 2021Publication date: December 23, 2021Applicants: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED, CALB Technology Co., Ltd.Inventors: Xiaoyuan Du, Keqiang Cheng, Yong Cao, Qixin Guo
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Publication number: 20210391630Abstract: The disclosure relates to the technical field of batteries, and provides a battery module. The battery module includes battery box elements; a reinforcing member, which is attached to the end portion of the battery box elements, and is connected to the battery box elements. When the battery box element is a cuboid as a whole, it includes two large surfaces and four small surfaces, and the end portion of the battery box element is the small surface of the battery box element.Type: ApplicationFiled: December 22, 2020Publication date: December 16, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Zhiyuan Chang, Xiaoyuan Du, Lihui Chang, Huanfei Li, Licheng Zheng
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Publication number: 20210359363Abstract: A battery and a battery manufacturing method are provided. The battery includes a main body portion, a cover plate assembly, a tab portion, and a connecting piece. The cover plate assembly is located on a top surface of the main body portion and includes a pole. The tab portion extends out from a side surface of the main body portion and is bent toward a first large surface of two opposite large surfaces of the main body portion. The connecting piece is bent into a first section, located on the top surface and connected with the pole, and a second section, parallel or almost parallel to the side surface and welded to a surface of one side of the tab portion facing or facing away from the main body portion. A surface where the connecting piece is connected with the second section is disposed opposite to the main body portion.Type: ApplicationFiled: January 26, 2021Publication date: November 18, 2021Applicants: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED, CALB Technology Co., Ltd.Inventors: Binwei Qi, Yongjie Zhang, Ci Zhang
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Publication number: 20210344089Abstract: A protection assembly of a battery module and a battery module are provided, which include a base disposed with a supporting portion, an accommodating portion, and a separating portion. The supporting portion is configured to dispose a positive lead and/or a negative lead of a busbar. The accommodating portion is configured to accommodate a low-voltage connector for transmitting a signal of the battery module to a battery management system. The supporting portion and the accommodating portion are located on the same side of the battery module. The separating portion is located between the supporting portion and the accommodating portion, and is configured to separate the low-voltage connector from the positive lead and/or the negative lead. In the protection assembly of the battery module, the positive lead and/or the negative lead and the low-voltage connector are respectively disposed on the supporting portion and the accommodating portion.Type: ApplicationFiled: January 21, 2021Publication date: November 4, 2021Applicants: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED, CALB Technology Co., Ltd.Inventors: Xiaoyuan Du, Keqiang Cheng, Liangjie Gu, Lihui Chang, Qixin Guo
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Publication number: 20210305546Abstract: A pouch battery module is provided. The pouch battery module includes a metal housing, wherein a plurality of pouch battery cells arranged along a first direction is disposed inside the metal housing; and a rigid insulation plate being provided between an outermost pouch battery cell and the metal housing along the first direction.Type: ApplicationFiled: September 3, 2020Publication date: September 30, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Zhiyuan Chang, Xiaoyuan Du, Yanbing Zhang, Zhengkun Wan, Yongguang Zhang
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Publication number: 20210296625Abstract: A safety structure of the battery module and a battery module are provided. The safety structure of a battery module includes: a guiding channel, one end of the guiding channel connects the safety valve of battery cell, and the other end of the guiding channel connects the packaging housing of the battery module; a pressure releasing mechanism for discharging high-pressure fluid is provided at a position corresponding to the guiding channel on the packaging housing; and the guiding channel is provided corresponding to the safety valve.Type: ApplicationFiled: September 4, 2020Publication date: September 23, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Zhouli Li, Huanfei Li, Guohua Sun, Lihui Chang, Li Niu, Xiaoyuan Du
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Publication number: 20210296713Abstract: A detection method and a detection device for branch states of a battery system are provided. A current on/off state of each branch is judged according to a first open circuit voltage of the corresponding branch and a second open circuit voltage corresponding to the battery system. Time for detecting and diagnosing each branch state can be reduced. It solves that the problem of longer time consumption and large error caused by the determination of the status of each branch through the change of the voltage of each branch in the prior art. A detection efficiency of branch states and an accuracy of detection results of branch states are both improved. The detection method is simple and quick to operate, and will not cause the complexity to increase rapidly as the number of branches increases. The detection method has good feasibility and practicability, and has a wide range of applications.Type: ApplicationFiled: September 3, 2020Publication date: September 23, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Guanjun Wang, Chaofan Lv
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Publication number: 20210296644Abstract: A cathode material, containing a crystal with a superlattice structure, is provided. A chemical formula of the crystal is xLi2MO3.(1-x)LiNiaCobMn(1-a-b)O2, where 0<x?0.1, 0.8?a<1, b?0.1, and M is selected from one or more of Mn, Co, and Ni. A preparation method of the cathode material and a battery or a capacitor containing the cathode material are also provided.Type: ApplicationFiled: September 3, 2020Publication date: September 23, 2021Applicants: CALB Technology Co., Ltd., CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Kai Cao, Zhimin Wang, Ning Wang, Xuyi Shan
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Publication number: 20210265677Abstract: A battery module is provided. The battery module provided by the disclosure includes a battery and a temperature collecting unit. The temperature collecting unit includes a support plate and a thermal element. The thermal element is disposed on an upper surface of the support plate. A lower surface of the support plate is attached to the battery.Type: ApplicationFiled: September 3, 2020Publication date: August 26, 2021Applicants: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITED, CALB Technology Co., Ltd.Inventors: Qixin Guo, Junhui Liu, Yawei Wang, Zhenqing Wang
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Publication number: 20210197690Abstract: The disclosure provides a method for control a power of a battery, a control apparatus, and an electric vehicle. By adjusting the actual power according to a difference between the rated powers and the current actual power, the power output by the battery and the power fed back to the battery can be controlled.Type: ApplicationFiled: September 6, 2020Publication date: July 1, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventor: Peipei Qiao
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Publication number: 20210190879Abstract: The disclosure provides a state-of-health (SOH) estimation method of a battery pack including the following steps. A corresponding total charge capacity of a battery pack from completion of a first charge to completion of a current charge is determined by accumulating a charge capacity of each charge. Afterwards, a target SOH value may be determined according to the total charge capacity and a predetermined capacity change threshold to characterize the influence of the cyclic charge of the battery pack on its attenuation.Type: ApplicationFiled: September 4, 2020Publication date: June 24, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventor: Yu Zhao
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Publication number: 20210194260Abstract: The disclosure provides state-of-charge (SOC) and state-of-health (SOH) estimation methods of a battery pack. The SOC estimation method of the battery pack includes the following steps. First, a current resting time, a current battery temperature, and a current measured open circuit voltage corresponding to a current initial power-on time of the battery pack are obtained. Next, an SOC value corresponding to the current initial power-on time is determined according to the obtained current resting time, current battery temperature, current measured open circuit voltage, and a relational expression between an open circuit voltage, a resting time, a battery temperature, and an SOC value at predetermined different battery temperatures, so that the battery pack can be characterized according to the obtained SOC value.Type: ApplicationFiled: September 3, 2020Publication date: June 24, 2021Applicant: CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Yu Zhao, Lei Wang
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Publication number: 20210184207Abstract: A silicon-graphite composite, a preparation method thereof, and a lithium battery anode and a lithium battery containing the silicon-graphite composite are provided in an embodiment of the disclosure. The silicon-graphite composite includes graphite and a silicon source fiber. The silicon source fiber is embedded in an interlayer structure of the graphite. The silicon-graphite composite is used as an anode material of the lithium battery in an embodiment of the disclosure.Type: ApplicationFiled: September 3, 2020Publication date: June 17, 2021Applicants: CALB Technology Co., Ltd., CHINA LITHIUM BATTERY TECHNOLOGY CO., LIMITEDInventors: Jianbo Ye, Xuyi Shan, Zhimin Wang