baber/WOPTO huggingface dataset:
Patent WO-2020078224-A1 (WO)
Title: Logistics object dispatch system and method
Inventor: LI JIANJUN
IPC: B65G1/04
Filed: 2019-10-08
Abstract: Provided are a logistics object dispatch system and method, belonging to the field of manufacturing logistics automation devices. The logistics object dispatch system comprises: a logistics object bearing structural body (2), and at least one carrying device (1) operating on the logistics object bearing structural body (2), wherein the logistics object bearing structural body (2) comprises a plurality of successively arranged mesh units, and a meshed rail (20) for the operation of the carrying device is provided above each mesh unit; a box for the dispatch of logistics objects may be arranged above each mesh unit; the carrying device (1) comprises a carrying device main body (10) and a delivery apparatus (13) located on the carrying device main body (10); and according to the type of delivery apparatus (13), the corresponding method for delivering the logistics object is determined. The system can enable the carrying device (1) to freely walk on the logistics object bearing structural body (2), and the box for the dispatch of the logistics objects may be arranged below each mesh unit, and the design of the box on the logistics object bearing structural body (2) can be maximized.
Patent WO-2020078320-A1 (WO)
Inventor: HAN XIAO
IPC: H04W28/06
Filed: 2019-10-14
Abstract: 本申请提供通信方法和通信装置。本申请提供的通信方法中，第一设备通过控制拖尾向一个或多个第二设备发送用于所述第一设备与所述第二设备之间进行多输入多输出MIMO通信的配置信息，以使得所述第一设备与所述一个或多个第二设备之间可以根据所述配置信息进行MIMO通信。
Patent WO-2020108276-A1 (WO)
Inventor: WANG QUNPU
IPC: B26D7/06
Filed: 2019-11-09
Abstract: A material pressing mechanism of a vegetable cutter, comprising a rocker arm assembly (B1), a support base (B2), a support guide assembly (B3), and a magnetically controlled start switch (B5). The support guide assembly comprises at least one magnetically conductive support column (31) to which the support base is guided and connected. The magnetically controlled start switch is provided at a bottom part of the magnetically conductive support column. The rocker arm assembly is provided thereon with a magnet (6). When the rocker arm assembly is in a downward swing state, the magnet corresponds to a side wall of the magnetically conductive support column, and the magnetically controlled start switch is magnetically controlled by means of the magnetically conductive support column. A magnetic circuit associated with the magnetically controlled start switch is established by means of the magnetically conductive support column, so that the magnetically controlled start switch controls a motor to start working, which thereby achieves the linear and circular arc movement of the trajectory of a material pressing plate on a plane, increases the volume of a feeding barrel, makes the material pressing operation process smoother, and improves the cutting efficiency.
Patent WO-2021097662-A1 (WO)
Title: 抗高温油基钻井液润湿剂的制备方法
Inventor: LI YUGUANG
IPC: C09K23/10
Filed: 2019-11-19
Abstract: 一种抗高温油基钻井液润湿剂的制备方法，该钻井液润湿剂由以下步骤制备：第一步、制备脂肪酸酯；第二步、制备钻井液润湿剂成品。一种抗高温油基钻井液润湿剂的制备方法制备的钻井液润湿剂能提高油基钻井液体系的高温乳化稳定性和对亲水组份的油润湿性能，促进钻井液体系的稳定性。
Patent WO-2021103114-A1 (WO)
Title: 一种igbt器件
Inventor: GONG YI
IPC: H01L29/739
Filed: 2019-12-06
Abstract: 本发明实施例提供的一种IGBT器件，包括MOSFET单元阵列，每个MOSFET单元包括：位于n型漂移区顶部的p型体区，位于p型体区内的n型发射极区，位于p型体区之上栅介质层、栅极和n型浮栅，栅极位于栅介质层之上且靠近n型发射极区的一侧，n型浮栅位于栅介质层之上且靠近n型漂移区的一侧，栅极通过电容耦合作用于n型浮栅；至少有一个MOSFET单元的n型浮栅通过栅介质层与p型体区隔离，且至少有一个MOSFET单元的n型浮栅通过一个位于该n型浮栅下方的栅介质层中的开口与p型体区接触形成p-n结二极管。本申请可以方便的调节IGBT器件的反向恢复速度。
Patent WO-2021097955-A1 (WO)
Inventor: SONG WEI
IPC: H04R9/02
Filed: 2019-12-09
Abstract: Provided in the present invention is a sounding device. The sounding device comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system. The basin frame comprises a bottom plate, an outer wall extending from the periphery of the bottom plate in a bent manner and an inner wall extending from the bottom plate in a bent manner. The magnetic circuit system comprises a magnetic bowl and a magnetic steel unit, wherein the magnetic bowl comprises a bottom wall for fixing the magnetic steel unit and a side wall which is arranged at an interval with the magnetic steel unit and forms a magnetic gap. The vibration system comprises a vibration membrane, a voice coil support and a voice coil; the vibration membrane comprises a first fixing part fixed on the outer wall, a second fixing part fixed on the side wall and/or the inner wall and a vibration part for connecting the first fixing part and the second fixing part; the voice coil support is fixed to the vibration part; and the voice coil is inserted into the magnetic gap by means of the voice coil support so as to be used for driving the vibration part to produce sound. The vertical distance between the maximum amplitude position of the vibration part and the surface of the bottom wall away from the magnetic steel unit is less than or equal to the height of the magnetic bowl in the vibration direction. Compared with the related art, the sounding device of the present invention is high in space utilization rate and small in thickness.
Patent WO-2021103192-A1 (WO)
Inventor: GUO ZHONGPING
IPC: E21D11/10
Filed: 2019-12-16
Abstract: Disclosed is a supporting structure for preventing roadway surrounding rock from transferring heat, relating to the technical field of roadway supporting. The supporting structure comprises supporting anchor rods (1), an anchoring and shotcreting concrete layer (2), a rigid polyurethane foam layer (3) and a gridding cloth mortar layer (4), wherein the supporting anchor rods (1) are arranged on a roadway, the anchoring and shotcreting concrete layer (2) is tightly attached to roadway surrounding rock, the rigid polyurethane foam layer (3) is arranged on the anchoring and shotcreting concrete layer (2) in a pressing manner, the gridding cloth mortar layer (4) is arranged on the rigid polyurethane foam layer (3), the section shape of the anchoring and shotcreting concrete layer (2) is the same as that of the roadway, the anchoring and shotcreting concrete layer (2) is of a solid structure and is smooth in terms of surface, the rigid polyurethane foam layer (3) evenly and smoothly covers the anchoring and shotcreting concrete layer (2), the gridding cloth mortar layer (4) comprises gridding cloth (9) and mortar, the gridding cloth (9) is hung on the rigid polyurethane foam layer (3) via an exposed end of the anchor rod, and the mortar is wrapped around the gridding cloth (9) and cured on the rigid polyurethane foam layer (3). The supporting structure can control deformation of roadway surrounding rock and also prevent heat of the roadway surrounding rock from being transmitted into the roadway.
Patent WO-2020186850-A1 (WO)
Title: Mesh plate steps design method, system, computer readable storage medium and device
Inventor: LIU JISHUO
IPC: G06F16/00
Filed: 2019-12-18
Abstract: The present invention provides a mesh plate steps design method, a system, a computer readable storage medium and a device. The design method comprises: acquiring data of mesh plate openings for electronic devices in a circuit board, and identifying the mesh plate openings one by one so as to judge whether steps are required; if yes, performing steps design for the mesh plate openings where steps are required according to the preset step rule corresponding to the mesh plate openings one by one so as to form a mesh plate steps design file, and outputting the mesh plate steps design file. According to the present invention, 90% or more steps can be automatically designed and the mesh plate steps design is in conformity with processing requirements. The manual intervention process is omitted, the design can be completed in several simple steps, 60%-80% or more time can be saved, and the error probability of the mesh plate steps design is reduced. At the same time, the present invention does not have high requirements on designers for mastery of skills and knowledge, which greatly reduces the risk of enterprises caused by the flow of personnel on the position.
Patent WO-2020143441-A1 (WO)
Title: Procédé de communication, appareil de communication et support de stockage
Inventor: LI SHENGYU
IPC: H04L5/00
Filed: 2019-12-24
Abstract: La présente invention concerne un procédé de communication, un appareil de communication et un support de stockage. Ledit procédé comprend les étapes au cours desquelles : un dispositif terminal détermine des informations de liaison montante ; lorsque les informations de liaison montante sont des premières informations de retour, le dispositif terminal détermine une première ressource de canal de commande de liaison montante correspondant aux premières informations de retour et envoie les premières informations de retour sur la première ressource de canal de commande de liaison montante ; et, lorsque les informations de liaison montante contiennent des informations d'état de canal apériodiques (A-CSI), le dispositif terminal détermine une seconde ressource de canal de commande de liaison montante correspondant aux informations de liaison montante et envoie les informations de liaison montante sur la seconde ressource de canal de commande de liaison montante, la première ressource de canal de commande de liaison montante étant différente de la seconde. Un dispositif de réseau identifie donc, au moyen d'une ressource de canal de commande utilisée par des informations de liaison montante reçues, si les informations de liaison montante contiennent des A-CSI. De plus, le dispositif de réseau peut recevoir correctement des informations de liaison montante, sans avoir à effectuer de multiples détections aveugles, ce qui réduit la complexité de la réception.
Patent WO-2021036154-A1 (WO)
Inventor: ZHU AIDAO
IPC: A61B5/055
Filed: 2020-09-11
Abstract: 本发明涉及一种降噪通话系统，其包括：设置在控制室内的受送话装置；设置在扫描室内的声电转换装置以及与其相连的空气导管麦克风耳机，所述受送话装置与所述声电转换装置连接，所述空气导管麦克风耳机用于控制室与扫描室之间的语音沟通，其中，所述空气导管麦克风耳机与所述声电转换装置的声信号转换为电信号后设有降噪模组。本发明不仅能够实现核磁共振的控制室和扫描室语音信息的双向无线传输，还能够降低控制室和扫描室内内容所接收的语音信息的噪音，进而提高了语音传输质量。
Patent WO-2021103278-A1 (WO)
Title: 直接使用电流加热的全固态电池
Inventor: XU JIAN
IPC: H01M10/04
Filed: 2020-11-10
Abstract: 本发明所描述的直接使用电流加热的全固态电池的制造方法既适用于叠层式成型的电池、也适用于卷绕式成型的电池。该电池在完成由正极与负极构成的部件的制造成型后，在其部件的一个电极集流体的两端连接一个输出电流可控的电流源，操作该电流源使相应形式的电流通过该电极集流体，导致该电极集流体发热升温，直至该部件中与特定固态电解质接触界面相关的特定物质材料熔化变成液体状态，利用其液体的流动性能和其他辅助条件形成新的接触界面，导致新形成的接触界面在冷却固化后其缝隙比原来减小，因此这个新形成的接触界面具有比原来(熔化前)的接触界面更低的离子传导电阻(在相同的常规温度环境下)，改善了全固态电池的性能。
Patent WO-2020192249-A1 (WO)
Inventor: FANG ZHENG
IPC: F16J13/22
Filed: 2020-01-10
Abstract: A wet type granulator, comprising a material cylinder (1). A cylinder cover (2) is rotatably provided at an opening of the material cylinder (1); a locking part (3) is provided on the cylinder cover (3) and comprises a locking housing (31); a first through slot (32) is formed in the locking housing (31), and a lock pin (33) is slidably provided in the first through slot (2) and comprises a middle rod (331) and an abutting rod (332); one end of the abutting rod (332) is connected to one end of the middle rod (331) to form an abutting platform (3321), and the other end extends out of the first through slot (32); one end of the middle rod (331) is provided in the first through slot (32), and the other end extends out of the first through slot (32); a pin head (333) is provided at the end of the middle rod (331) extending out of the first through slot (32); the diameter of the pin head (333) is greater than that of the first through slot (32); a reset spring (34) is sleeved on the middle rod (331); an abutting step (321) is provided in the first through slot (32); one end of the reset spring (34) is fixedly mounted on the abutting step (321), and the other end abuts against the abutting platform (3321), thereby realizing linkage between the lock pin (33) and the reset spring (34); the weight of the lock pin (33) is less than reset elasticity of the reset spring (34), thereby realizing fixation of the lock pin (33) on the first through slot (32); an abutting block (4) is provided at the opening of the material cylinder (1), and a continuous ramp surface (41) is provided on the abutting block (4) and faces the movement direction of the locking part (3).
Patent WO-2020156472-A1 (WO)
Inventor: ZHAO YOUPING
IPC: H04W52/14
Filed: 2020-01-23
Abstract: Provided are an electronic device and method for wireless communication, and a computer-readable storage medium. The electronic device comprises a processing circuit configured to: determine the first power limiting region of the first primary user of a main system, wherein the first power limiting region is a three-dimensional space defined by the directional beams of the first primary user to the third primary user of the main system; and determine one or more secondary users in the first power limiting regions.
Patent WO-2020156558-A1 (WO)
Inventor: CHEN WEI
IPC: H04W72/12
Filed: 2020-02-03
Abstract: 本公开涉及接收设备、发送设备、通信方法以及介质。提供了一种接收设备，包括：处理电路，被配置为从发送设备接收参考信号，其中，所述参考信号承载了基于与发送设备关联的正交序列和随机序列生成的参考序列；基于所述参考信号识别所述发送设备。
Patent WO-2020169032-A1 (WO)
Inventor: GUO JIANJUN
IPC: C07D317/38
Filed: 2020-02-18
Abstract: 本发明涉及一种用于环氧烷烃和二氧化碳制备碳酸亚烷基酯的方法，将含有环氧烷烃和二氧化碳的原料与催化剂接触反应，生成碳酸亚烷基酯；所述催化剂选自由多基配体与锌形成的络合物中的至少一种；其中，所述多基配体包括三苯基膦类化合物和水杨酸类化合物；所述催化剂中，锌、三苯基膦类化合物与水杨酸类化合物的摩尔比为5∶1-50∶1-50范围内的任意值。有益效果是：本方法采用了多基配体与锌形成的络合物催化体系。本发明的方法，环氧烷烃的转化率为99.8％，碳酸亚烷基酯的选择性为99.5％，取得了较好的技术效果。
Patent WO-2020173426-A1 (WO)
Title: 基于戊二酰亚胺骨架的含硫化合物及其应用
Inventor: YANG XIAOBAO
IPC: C07D495/14
Filed: 2020-02-25
Abstract: 本公开涉及式(I)化合物或其盐、溶剂化物、同位素富集类似物、互变异构体、多晶型物、立体异构体、或立体异构体的混合物，以及其治疗肿瘤应用。本公开还提供了式(II)化合物或其医药学上可接受的盐、溶剂化物、同位素富集类似物、互变异构体、多晶型物、立体异构体、或立体异构体的混合物的治疗肿瘤应用。
Patent WO-2021098077-A1 (WO)
Title: 一种真随机数发生器和真随机数发生方法
Inventor: LU YIMING
IPC: G06F7/58
Filed: 2020-02-28
Abstract: 一种真随机数发生器和真随机数发生方法。多个环形振荡器电路（12）以阵列方式排布，且能够通过随机数统计分析电路（15）分析随机数序列并反馈（16）分析结论至配置选择电路（11），配置选择电路（11）根据随机数统计分析电路（15）的分析结论，发送控制信息调整真随机数发生器的配置。通过该真随机数发生器和真随机数发生方法，在不增加后端布局布线难度的情况下，能够自动调节真随机数发生器配置，生成高质量的随机数序列，效率高。
Patent WO-2020200106-A1 (WO)
Title: Terminal device
Inventor: Dan Xinmiao
IPC: G06F1/16
Filed: 2020-03-27
Abstract: Provided by the present disclosure is a terminal device, comprising: a housing, the housing being provided thereon with a display screen, and the housing having an accommodating space; a rotation module, the rotation module being rotatably installed on the housing by means of a connecting shaft; and a drive mechanism, the drive mechanism being arranged in the housing, and the drive mechanism driving the rotation module so as to enter or exit the accommodating space; the connecting shaft is arranged perpendicular to the display screen.
Patent WO-2021155633-A1 (WO)
Title: Use of alkyl resorcinol compound in preparation of drug for preventing or treating alzheimer's disease
Inventor: WANG JING
IPC: A61P25/28
Filed: 2020-03-30
Abstract: Provided in the present invention is the use of an alkyl resorcinol compound in the preparation of a drug for preventing or treating Alzheimer's disease, which falls within the field of biomedicine. The structure of the alkyl resorcinol compound is as represented by general formula (I), and in the formula, R1 is any one of a C5-C50 straight-chain or branched-chain alkyl. By means of experiments, the present invention proves that the alkyl resorcinol compound can prevent or treat Alzheimer's disease by changing the expression of various pathogen-related proteins and pathway proteins in the brain and regulating the composition of intestinal flora and the abundance of characteristic flora.
Patent WO-2021195947-A1 (WO)
Title: 电子标签、电子标签的处理方法及装置
Inventor: SHAO SHUAI
IPC: H04W52/02
Filed: 2020-03-31
Abstract: 本发明公开了一种电子标签、电子标签的处理方法及装置。该方法包括：获取供电组件的剩余电量，其中，供电组件用于为电子标签进行供电；当剩余电量大于或等于电量阈值时，启用第一电子模组与读卡器进行通信；当剩余电量小于电量阈值时，切换至第二电子模组与读卡器进行通信；其中，第二电子模组的功耗小于第一电子模组的功耗。本发明解决了相关技术中缺少一种既能够适用于消费者市场又能够长时间使用的电子标签的技术问题。
Patent WO-2021207959-A1 (WO)
Title: Repeated transmission method and apparatus, and readable storage medium
Inventor: XU WEIJIE
IPC: H04L1/00
Filed: 2020-04-15
Abstract: Embodiments of the present application provide a repeated transmission method and apparatus, and a readable storage medium. The method comprises: processing, according to transmission parameters respectively corresponding to N time slots, OFDM symbols comprised in the N time slots, wherein the N time slots correspond to a same transmission block (TB) or same control information or a same signal. The transmission parameters respectively corresponding to the N time slots are not completely the same, thereby improving the flexibility of repeated transmission and improving the system efficiency.
Patent WO-2021189573-A1 (WO)
Title: 阵列基板及显示面板
Inventor: FANG SHAOMAO
IPC: G02F1/1362
Filed: 2020-04-21
Abstract: 一种阵列基板（100）及显示面板（1000），在阵列基板（100）中，第一数据线（121）电连接蓝色像素电极（141）；第二数据线（122）电连接非蓝色像素电极；蓝色像素电极（141）与其电连接的第一数据线（121）之间具有第一水平距离（D1），非蓝色像素电极与其相邻的数据线（12）之间、蓝色像素电极（141）与相邻的第二数据线（122）之间均具有第二水平距离（D2）；第一水平距离（D1）大于第二水平距离（D2）。
Patent WO-2021022839-A1 (WO)
Inventor: YAN HEXIN
IPC: C12N5/10
Filed: 2020-04-24
Abstract: L'invention concerne un procédé de construction pour une lignée cellulaire du type précurseur hépatique et la lignée cellulaire du type précurseur hépatique ayant pour numéro de dépôt CCTCCNO: C2019120. Le procédé de construction comprend la construction de la lignée cellulaire du type précurseur hépatique à l'aide d'une cellule hépatique primaire en tant que cellule germe; la régulation des paramètres de processus de sous-culture, de nouvelle sous-culture, d'infection virale, de culture d'amplification et de culture de convergence; et la réalisation d'une surexpression sur un facteur de transcription à spécificité de cellule hépatique FOXA3 dans une lignée cellulaire immortalisée, de telle sorte que la lignée cellulaire du type précurseur hépatique obtenue peut facilement mettre en œuvre une désintégration favorable axée sur le foie. L'invention concerne en outre une application de la lignée cellulaire du type précurseur hépatique obtenue par le procédé de construction au domaine des foies bio-artificiels.
Patent WO-2021098147-A1 (WO)
Title: Vr体感数据检测方法、装置、计算机设备及存储介质
Inventor: ZHANG JIE
IPC: G06K9/00
Filed: 2020-04-26
Abstract: 一种VR体感数据检测方法、装置、计算机设备及存储介质。该方法包括通过对标准动作特征数据进行动作分解得到标准3D节点数据（S120）；将标准3D节点数据根据人体动作映射表进行数据转化得到对应的标准动作数据集合（S130）；接收由目标终端上传的当前动作特征数据，依次通过动作分解和根据人体动作映射表数据转化，得到对应的当前动作数据集合（S140）；获取当前动作数据集合中各人体动作序列与标准动作数据集合中对应人体动作序列之间的当前相似度（S150）；若相似度低于相似度阈值，将提醒信息发送至对应的目标终端（S160）。该方法实现了由VR实时扫描人体动作，并和标准动作进行匹配识别，精准识别当前的动作与标准动作的相似度，对于错误动作进行及时提示。
Patent WO-2021217381-A1 (WO)
Inventor: TANG ZIQING
IPC: G05D1/10
Filed: 2020-04-27
Abstract: La présente invention concerne un procédé et un dispositif d'invite de vol, un terminal de commande (10) et un support de stockage. Le procédé comprend les étapes consistant à : afficher, sur une interface interactive du terminal de commande (10), une image transmise capturée par un véhicule aérien sans pilote (20) et/ou une image de carte (S101); obtenir des informations d'obstacle détectées par le véhicule aérien sans pilote (20) (S102); et afficher une icône d'alerte d'obstacle au niveau d'une boîte de délimitation de l'interface interactive en fonction des informations d'obstacle (S103).
Patent WO-2020238532-A1 (WO)
Inventor: XU DONGSHENG
IPC: F21V23/06
Filed: 2020-04-28
Abstract: A modular multifunctional strip lamp, comprising a lamp body assembly (1), an end support (2), a first end assembly (3), and a second end assembly (4). The lamp body assembly (1) comprises a lampshade (11), a lamp panel (12), a lamp bracket (13), and a terminal assembly (14). The lamp panel (12) is snap-fitted into the lamp bracket (13). The lampshade (11) is snap-fitted to one side of the lamp bracket (13). The terminal assembly (14) is provided on the other side of the lamp bracket (13). The end support (2) is connected to both ends of the lamp bracket (13) by means of bolts (7). The first end assembly (3) and the second end assembly (4) are detachably connected to the end support (2) separately. A control assembly (31) is provided in the first end assembly (3). The control assembly (31) comprises a power drive board (311). The input end of the power drive board (311) is electrically connected to the terminal assembly (14) by means of the end support (2), and the output end of the power drive board (311) is electrically connected to the lamp panel (12). Modular assembly can be achieved, disassembly and maintenance are convenient, different functional assemblies can be filled according to user requirements, and the use cost is reduced.
Patent WO-2020238567-A1 (WO)
Inventor: HUO XIANGMING
IPC: G06F16/958
Filed: 2020-05-06
Abstract: 一种资源检测方法及装置，用以实现自动检测网页或文档中的死链。检测装置接收针对待发布资源的第一检测指令，根据第一检测指令获取在待发布资源中所引用的资源的URL链接，检测装置可以根据被引用资源的URL链接判断被引用资源的状态，若被引用资源处于已下线状态，说明发布待发布资源会导致待发布资源不能正常跳转，检测装置可以产生第一提示信息，还可以将第一提示信息发送给CMS，其中，第一提示信息用于提示发布待发布资源会产生失效URL链接。在待发布资源发布之前，可以预先检测待发布资源可能存在的死链状况，在存在死链的情况下，可以有效减少发布的网页或文档存在死链的概率，也可以提高用户体验。
Patent WO-2021169034-A1 (WO)
Title: 转铁蛋白或过表达转铁蛋白在制备治疗和/或预防溃疡性结肠炎的药物中的应用
Inventor: LAI REN
IPC: A61K38/40
Filed: 2020-05-07
Abstract: 本发明提供了转铁蛋白或过表达转铁蛋白在制备治疗和/或预防溃疡性结肠炎的药物中的应用，属于生物医学技术领域。本发明利用转铁蛋白抑制肠道炎症并达到治疗溃疡性结肠炎的目的。转铁蛋白对于治疗急性溃疡性结肠炎和慢性溃疡性结肠炎均有良好的效果。转铁蛋白过表达能够抑制急性溃疡性结肠炎和慢性溃疡性结肠炎导致的结肠组织损伤、结肠缩短，改善急性溃疡性结肠炎导致的疾病指数和抑制急性溃疡性结肠炎导致的体重下降。
Patent WO-2021159618-A1 (WO)
Title: Positive electrode material for high-power lithium ion battery and preparation method therefor
Inventor: GUO XIN
IPC: H01M4/485
Filed: 2020-05-12
Abstract: Disclosed in the present invention is a positive electrode material for a high-power lithium ion battery. Said positive electrode material is a secondary particle having a hollow microsphere structure. The outer shell part of the secondary particles is formed by gathering several primary particles. The particle has a uniform size, a loose and porous surface and a high specific surface area. In addition, the obtained particles have regular shapes, and the material has a stable structure, a higher rate performance and an excellent cycle property. Also disclosed in the present invention is a preparation method for said positive electrode material, comprising the following steps: (1) using a coprecipitation method to synthesize a Ni x Co y M z (OH) 2  precursor, wherein the central part of the precursor consists of minute particles, and the shell part consists of large particles having a particle size larger than that of the minute particles; (2) uniformly mixing the precursor and a lithium salt, adding an oxide of a doping element when mixing, and then performing sintering, so as to obtain a Li a Ni x Co y M z O 2  positive electrode material. The preparation method has a simple process and low costs, and can be used for industrial production.
Patent WO-2021128714-A1 (WO)
Inventor: WANG HONGXING
IPC: H02H11/00
Filed: 2020-05-19
Abstract: A power-on/off circuit for a battery management system, comprising a drive signal input end (VLSP), a power-on drive signal output end (On_Aux_Pwr), a power supply end (DC_IN+, DC_IN-), a power supply signal extraction circuit (100), a trigger circuit (200) and a switch (300). The drive signal input end (VLSP) is connected to the power-on drive signal output end (On_Aux_Pwr) by means of the switch (300); the power supply signal extraction circuit (100) is connected to the power supply end (DC_IN+, DC_IN-) and is used for outputting a control signal on the basis of a power supply signal connected to the power supply end (DC_IN+, DC_IN-); and the trigger circuit (200) is electrically connected to the power signal extraction circuit (100), and the trigger circuit (200) is used for controlling the switch (300) to be turned on or off according to the transition of the control signal. The power-on/off circuit receives, by means of the trigger circuit (200), a power-on or power-off signal output by the power supply signal extraction circuit (100), thereby implementing unified management of power-on/off signals. The power-on/off circuit is easy to expand, and has strong reusability.