baber/WOPTO huggingface dataset:
Patent WO-2020258513-A1 (WO)
Inventor: WANG CHENG
IPC: B61C17/00
Filed: 2019-09-04
Abstract: The invention belongs to the technical field of train operation protection, and discloses a control method and system for detecting braking force of a train. The control method comprises: measuring in real time and determining the actual deceleration of a train with two or more groups of accelerometers; judging whether the actual braking force satisfies the braking requirement according to the actual deceleration; determining that the actual braking force of the train is insufficient and taking emergency protective measures. The method uses accelerometers to directly measure the actual deceleration of a train, and has the characteristics of simple structure, easy implementation and small error. The method combines the monitoring of actual braking force with the speed protection, strengthening the functions of an automatic train control system and effectively guaranteeing the safety of train operation.
Patent WO-2020088395-A1 (WO)
Inventor: XIAO JIEHUA
IPC: H04W72/04
Filed: 2019-10-28
Abstract: 本申请提供一种资源配置方法及装置，其中方法包括：第一终端设备确定带宽部分BWP的边链路资源；并根据所述边链路资源在所述BWP上和第二终端设备进行sidelink通信。本申请提供的资源配置方法及装置，实现了在进行边链路通信时节省终端设备的功率，以及提供更加灵活的资源配置和信号收发方式。
Patent WO-2020088449-A1 (WO)
Inventor: ZHOU XIWEI
IPC: H01M10/42
Filed: 2019-10-29
Abstract: The present invention relates to the technical field of electrochemical battery energy storage system applications, and particularly relates to a battery energy storage BMS system enabling dual path-based information sampling and detection and protection control. Each battery module unit cell detection and sampling module of a battery string monitoring management module in a battery string direct current bus and string balancing management control device acquires electrical parameters, such as voltage, current, and charge, and a temperature parameter of each battery string and all battery units in real-time, and compares the same against pre-configured operation assurance parameters of an energy storage system so as to perform string-level electrical energy balancing. Upon detecting that a parameter of a unit battery has reached a preset hazardous state range, a corresponding battery module unit cell detection and sampling module directly drives a corresponding battery string direct current power line on-off switch and protection circuit to disconnect a power path connecting a corresponding battery string to a battery string direct current busbar. The invention saves investment costs while significantly improving controllability and safety of the energy storage system.
Patent WO-2020088467-A1 (WO)
Inventor: WANG JIAN
IPC: H04W8/22
Filed: 2019-10-29
Abstract: 本申请实施例提供一种终端通信能力发送、接收方法及装置，该方法包括：网络设备向终端设备发送第一消息，然后终端设备根据接收的第一消息确定N个通信能力信息，并将N个通信能力信息发送至网络设备。其中，N个通信能力信息分别承载在不同的消息中，其中N个通信能力信息中的一个能力信息包括以下任一项：通信能力容器字段的部分或者全部，通信能力容器字段指示所述终端设备的K种RAT的任意一种RAT的通信能力信息；通信能力字段的部分或者全部，通信能力字段指示所述终端设备的K种RAT中的任意一种RAT的通信能力信息；通信能力容器列表字段的部分，该方法用以使得网络设备从终端设备获取通信能力消息，从而与终端设备成功建立通信。
Patent WO-2020103657-A1 (WO)
Inventor: YUAN JIAPING
IPC: H04N21/472
Filed: 2019-10-30
Abstract: Disclosed in the present application are a video file playback method and apparatus, and a storage medium. The video file playback method comprises: playing, in a process of playing a video file, an animation file frame by frame according to the playback time of the video file, the video file comprising at least one display object, and the animation file comprising animation elements generated according to the display object; if a screen tap event is detected in the process of playing the video file, determining tap position information of the screen tap event; determining, according to the tap position information of the screen tap event, an animation element display region matching tap position information of the screen tap event in the animation file; determining, according to the matched animation element display region, an animation element that the screen click event hits; and determining an interaction operation corresponding to the hit animation element, and executing the interaction operation.
Patent WO-2020155718-A1 (WO)
Inventor: WU CHANJUAN
IPC: A01G7/04
Filed: 2019-11-01
Abstract: 植物照明技术领域的一种面板式组合植物灯，至少包括一个面板灯（2），面板灯（2）任一端设置有转动连接部（5,15），转动连接部（5,15）与面板灯（2）连接处设置有滑动套板（1,8,17），滑动套板（1,8,17）包括抽板（3,7,12,13）和底板，底板与面板灯（2）或转动连接部（5,15）固定，抽板（3,7,12,13）与面板灯（2）或转动连接部（5,15）固定，面板灯（2）的厚度为3-40mm，滑动套板（1,8,17）的内部且沿长度方向开设滑动槽，滑动槽两侧均开口，滑动套板（1,8,17）的侧壁沿长度方向设限位通孔（4），限位通孔（4）与滑动槽连通。该面板式组合植物灯灵活性强，便于组装和拆卸，同时能够实现光照密度与范围的调节，能够改变多个面板灯（2）组合后的配光，避免造成光源浪费，有利于植物生长。
Patent WO-2020098597-A1 (WO)
Inventor: Liao ting
IPC: H04L45/50
Filed: 2019-11-11
Abstract: 本申请实施例公开了一种组播的方法及路由设备，方法包括：当第一路由设备上有组播组接入时，所述第一路由设备为所述组播组分配组播分段标识，所述组播分段标识用于指示当前承载的业务为组播业务；所述第一路由设备将携带所述组播分段标识的报文通告给分段路由域中的其他路由设备；当第二路由设备根据接收到的所述报文，创建用于承载组播数据的隧道之后，所述第一路由设备接收通过所述隧道转发的组播数据；其中，所述第二路由设备为所述组播组的源接入节点设备。采用本申请实施例，可实现组播业务在SR网络中的灵活承载，充分发挥SR网络的工作效率。
Patent WO-2020228285-A1 (WO)
Inventor: SHUAI YAO
IPC: H03H3/02
Filed: 2019-11-13
Abstract: 本发明涉及空腔型体声波谐振器制备技术领域，尤其是涉及一种空腔型体声波谐振器的制备方法及空腔型体声波谐振器；包括如下步骤：通过单晶晶圆损伤处理工艺对单晶晶圆进行损伤处理，得到具有损伤层的单晶晶圆；在具有损伤层的单晶晶圆的下表面依次制备下电极和牺牲层，在牺牲层表面制备厚度大于等于牺牲层和下电极厚度总和的聚合物键合层，将衬底与聚合物键合层进行键合工艺处理及单晶晶圆劈裂工艺处理后，得到具有下电极的单晶薄膜；在具有下电极的单晶薄膜的上表面制备上电极，在单晶薄膜层上表面开设与牺牲层连通的牺牲层释放孔，释放牺牲层，得到空腔型体声波谐振器；制备得到的空腔型体声波谐振器具有较高Q值。
Patent WO-2021092838-A1 (WO)
Inventor: WU JIE
IPC: A01B1/20
Filed: 2019-11-14
Abstract: A multifunctional shovel for crop cultivation, comprising a support rod (1). A handle (2) is disposed on top of the support rod (1), and a shearing mechanism (3) is disposed within the handle (2) at a lower portion thereof. An anti-slip ring (26) is disposed in a middle portion of the support rod (1). A first fixing mechanism (4) is disposed at a bottom portion of the support rod (1). A portable rake (5) is disposed on a rear end of the first fixing mechanism (4), and a blade (6) is disposed below a front end of the first fixing mechanism (4).
Patent WO-2020103898-A1 (WO)
Title: Led light bulb manufacturing method
Inventor: JIANG LIUYANG
IPC: H01L33/48
Filed: 2019-11-21
Abstract: An LED light bulb manufacturing method, comprising: S10, manufacturing a fluorescent film (1); S20, attaching the fluorescent film (1) to a high temperature-resistant first supporting film surface, and evenly attaching flip-chip LED chips (2) to the fluorescent film (1); S30, printing and curing an adequate amount of transparent silicone (3) between adjacent LED chips (2), the transparent silicone (3) being cured in an arced shape around the LED chips (2); S40, cutting along grooves between the LED chips (2) to produce individual LED chips (2) having the fluorescent film (1); fixing the LED chips (2) having the fluorescent film (1) on the surface of a support frame (4) with the side having the fluorescent film (1) facing up; S60, filling and curing a white adhesive (5) between adjacent LED chips (2); S70, cutting along the grooves between the LED chips (2), and laminating a lens (6) or preparing a transparent silicone layer (7) on the surface of the fluorescent film (1) to produce LED light bulbs. With the fluorescent film (1) directly cured on the surface of the flip-chip LED chips (2), the curing of the fluorescent film (1) can be implemented without having to drip the transparent silicone (3) on the surface of the LED chips (2), thus effectively avoiding possible technical problems such as film position offset and film temperature resistance, and greatly increasing the central illumination of the flip-chip LED chips (2).
Patent WO-2020155837-A1 (WO)
Inventor: NIU QINGFENG
IPC: G06Q10/02
Filed: 2019-12-03
Abstract: L'invention concerne un procédé, un appareil, un système et un dispositif d'affichage d'informations de covoiturage, le procédé comprenant les étapes suivantes : un utilisateur d'un premier type envoie un itinéraire à une extrémité de service ; selon l'itinéraire de l'utilisateur du premier type, l'extrémité de service effectue une mise en correspondance avec des itinéraires d'utilisateurs d'un second type ; un lot d'itinéraires des utilisateurs du second type qui contiennent des degrés de correspondance est filtré ; et le lot est envoyé à un client. Selon les degrés de correspondance, le client trie les itinéraires des utilisateurs du second type, trie les itinéraires des utilisateurs du second type dans l'ordre décroissant pendant l'affichage et affiche les degrés de correspondance.
Patent WO-2020258731-A1 (WO)
Inventor: LIU ZHIBING
IPC: A45D19/00
Filed: 2019-12-06
Abstract: A dye kit comprises: (A) a dyeing composition comprising: (I) a colorant composition comprising at least one oxidative dye (s) and at least one reducer; and (II) a developer composition (II), comprising at least one oxidant; wherein the composition (I) is placed separate from the composition (II), and an AMPS polymer is placed in the composition (I) and/or composition (II).
Patent WO-2021109135-A1 (WO)
Title: Method and access network node for beam control
Inventor: LIU KANGQI
IPC: H04W16/28
Filed: 2019-12-06
Abstract: A method and an access network node are disclosed for beam control. According to an embodiment, the access network node determines first spatial domain information of a channel between a first terminal device and the access network node, based on second spatial domain information of the channel estimated by uplink signals received previously from the first terminal device at multiple time points. The access network node determines beamforming weights for the first terminal device based on the first spatial domain information.
Patent WO-2021062948-A1 (WO)
Inventor: DING CHEN
IPC: G06F3/0484
Filed: 2019-12-16
Abstract: An element adding method and apparatus, and an electronic device. The method comprises: in response to an adding instruction for a target element displayed in a second region in a second window, outputting a pop-up window in a first region of a first window, the pop-up window being used for displaying the target element (201); receiving an operation instruction for the target element in the pop-up window (202); and adding the element in the second region of the second window into the first window based on the operation instruction (203). Therefore, when the elements in the second window are added into the first window, only the pop-up window in the first window needs to be used for operation, and related operation does not need to be carried out on the second window.
Patent WO-2021109240-A1 (WO)
Inventor: JIA YU
IPC: G01S19/42
Filed: 2019-12-17
Abstract: 本申请公开了一种射频架构及移动终端。本申请通过单独设置B13双工器的射频通路，使得LTE_B13主波信号由功率放大器输出经过B13双工器后，不经过任何非线性器件，直接由第二主天线发射出去，从而B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合，极大地减小射频通路对GPS通路的干扰。
Patent WO-2021072964-A1 (WO)
Inventor: ZENG JINHUI
IPC: H02J7/00
Filed: 2019-12-17
Abstract: A multifunctional intelligent wireless charging compatible mobile phone transverse and longitudinal placing device, comprising a hollow main body rear housing (12). A protective door assembly (9) is fixedly mounted in the main body rear housing (12); a main PCB (10) is mounted at the top of the protective door assembly (9); one side of the main PCB (10) abuts against a wireless charging PCB (8); one side of the wireless charging PCB (8) is connected to a main body front housing (4); one side of the main body front housing (4) away from the main body rear housing (12) is slidably connected to a wireless charging bottom housing (3); a wireless charging surface housing (1) is mounted on one side of the wireless charging bottom housing (3). A special-shaped spring (6) is deformed, a special-shaped spring pressing block (7) fixes one end of the special-shaped spring (6) to the main body front housing (4), a sliding groove T-shaped pressing block (5) fixes the other end of the special-shaped spring (6), and the sliding groove T-shaped pressing block (5) is fixed to the wireless charging surface housing (1), so that the device can adapt to charging of a mobile phone in transverse and longitudinal states during wireless charging; moreover, the device is also suitable for charging in a wired manner when wireless charging is not performed.
Patent WO-2020135288-A1 (WO)
Title: 屏幕振动发声装置和电子产品
Inventor: ZHU YUEGUANG
IPC: H04R9/02
Filed: 2019-12-23
Abstract: 本发明公开了一种屏幕振动发声装置和电子产品。该屏幕振动发声装置包括：振动组件，所述振动组件包括屏幕和固定件，所述屏幕被配置为能相对于所述固定件振动；驱动组件，所述驱动组件包括线圈和磁体组，所述线圈与所述屏幕或固定件的其中之一固定连接，所述磁体组与所述屏幕和固定件中不与线圈固定连接的一个固定连接；所述线圈由导线沿一个方向绕制呈封闭的环形结构，所述线圈的轴线垂直于所述屏幕的表面，所述磁体组的各磁体之间形成有磁间隙，所述磁间隙中具有磁场，所述线圈伸入所述磁间隙中，所述线圈被配置为能通入交变的电流信号，所述线圈穿过所述磁体组产生的磁场，所述磁体组与线圈之间产生垂直于所述屏幕的表面的安培力；所述驱动组件被配置为能驱动所述屏幕相对于所述固定件振动发声。
Patent WO-2020140983-A1 (WO)
Inventor: LE BOURGEOIS BENOIT
IPC: G08C17/02
Filed: 2020-01-03
Abstract: La présente invention concerne un procédé et un appareil pour fournir un accès à un système à l'aide d'un dispositif d'accès sans fil. Le procédé peut comprendre l'activation d'une pluralité d'émetteurs-récepteurs de balise du véhicule. Le procédé peut également comprendre le fait de déterminer, sur la base au moins en partie d'au moins un message de balise reçu par les émetteurs-récepteurs de balise, par le dispositif d'accès sans fil ou par une combinaison de ceux-ci, quand une position du dispositif d'accès sans fil relative au véhicule satisfait un seuil d'accès. Le procédé peut également comprendre, en réponse au fait de déterminer que le seuil d'accès a été satisfait, la configuration d'un ou de plusieurs systèmes du véhicule sur la base de la position du dispositif d'accès sans fil par rapport au véhicule.
Patent WO-2021103288-A1 (WO)
Title: 可在生物体内示踪的细胞、其制备方法及其在细胞药代动力学研究中的用途
Inventor: Peng Huige
IPC: G01N21/64
Filed: 2020-01-03
Abstract: 一种可在生物体内示踪的细胞、其制备方法及其在细胞药代动力学研究中的用途以及细胞药物。该可在生物体内示踪的细胞，其标记有荧光染料，荧光染料通过化学键偶联且以不可逆的方式结合于细胞的表面。该细胞直接被标记荧光染料，且荧光染料的标记对细胞增殖没有影响，该细胞药物具有较好的稳定性，其可以在体内示踪，并准确快捷地反映细胞在体内的变化过程或分布情况，可应用于细胞药代动力学研究。
Patent WO-2020168867-A1 (WO)
Inventor: YE JIAN
IPC: G06F1/16
Filed: 2020-01-15
Abstract: Disclosed is a terminal device, comprising: a driven component; a housing provided with an opening; an extension/retraction drive mechanism provided within the housing, the extension/retraction drive mechanism being connected to the driven component and driving the driven component to move to extend or retract from the opening; and a rotation drive mechanism provided within the housing, the rotation drive mechanism being connected to the driven component and driving the driven component to rotate after the extension/retraction drive mechanism drives the driven component to extend out, and the rotation axis of the driven component being parallel to the axis of the opening.
Patent WO-2021036193-A1 (WO)
Inventor: HE ZUWEI
IPC: C07D403/10
Filed: 2020-01-17
Abstract: 本发明提供了一种氯沙坦的制备方法，由式(Ⅰ)所示的含氰基中间体与叠氮试剂在催化剂存在下于甲苯中反应制得，其中，反应结束后通过以下过程除去叠氮离子：加入水使反应体系分为三层，分出中间层并向其中加入正丁醇进行稀释，向所得的稀释液中加入三苯基膦以除去所述稀释液中残留的叠氮离子。本发明提供的制备方法无需使用亚硝酸钠，从根本上杜绝了基因毒性杂质亚硝胺的形成，所得的目标产物纯度好，收率高，制备工艺简便，操作条件温和易控制，安全性好，适宜大规模的工业化生产。
Patent WO-2020200194-A1 (WO)
Inventor: LIU TA-JO
IPC: A61M37/00
Filed: 2020-03-31
Abstract: 一种微针装置(1)及其制法，微针装置(1)包含多个针体(11)，多个针体(11)各包含一针尖层(111)、一结构层(112)与一基底层(113)，可以减少为了增加结构强度而需额外添加的材料的量，同时也能获得具有足够机械强度的微针装置(1)。一种利用微针装置(1)的制作方法所获得的淡化色素微针装置，具有微针装置(1)的优点，且因淡化色素微针装置能穿透皮肤角质层后在表皮层释放有效成分，可达到淡化色素的效果。
Patent WO-2021217546-A1 (WO)
Inventor: LI WENQIANG
IPC: H01L21/77
Filed: 2020-04-30
Abstract: A display substrate and a manufacturing method therefor, and a display device. The display substrate comprises: a base substrate (101), a shift register unit (104), a first clock signal line (GCK) and a second clock signal line (GCB). The shift register unit (104) comprises an input circuit (1041), an output circuit (1043), a first control circuit (1042), a second control circuit (1045), and a voltage stabilizing circuit (1046). A first electrode (SD71) of a first noise reduction transistor (T7) of the second control circuit (1045) of the shift register unit (104) and a first electrode (SD81) of a voltage stabilizing transistor (T8) of the voltage stabilizing circuit (1046) of the shift register unit (104) are located at a first source/drain electrode layer, the first source/drain electrode layer comprises a first bridge electrode (E1), the first bridge electrode (E1) comprises a first portion (E11) and a second portion (E12), the first portion (E11) is connected to the first electrode (SD71) of the first noise reduction transistor (T7) and the first electrode (SD81) of the voltage stabilizing transistor (T8), and the second portion (E12) is connected to a gate electrode (G2) of a first control transistor (T2) of the first control circuit (1042). The wiring of the shift register unit (104) is simpler, which is beneficial for increasing the space utilization rate of the display substrate, such that it is easier to achieve a narrow frame of the display substrate.
Patent WO-2021139060-A1 (WO)
Title: Electric motor for washing machine
Inventor: SHEN ENMING
IPC: H02K1/12
Filed: 2020-05-06
Abstract: Disclosed is an electric motor for a washing machine, the electric motor comprising a stator (1) and a rotor (2). The stator (1) comprises an annular mounting portion (101), wherein 21 to 26 pairs of magnetic poles are arranged on an outer side of the mounting portion (101), and the mounting portion (101) is provided with a plurality of connecting portions (103) uniformly distributed around the axis of the mounting portion (101). The magnetic poles comprise a plurality of first magnetic poles (102) disposed on the outer side of the mounting portion (101) and second magnetic poles (201) disposed on outer sides of the first magnetic poles (102), and the second magnetic poles (201) are fixed to an inner side wall of the rotor (2). The present invention has the advantage of low noise.
Patent WO-2021051901-A1 (WO)
Title: Method for machining workpiece by means of cutting same to obtain surface with high integrity
Inventor: LI ANHAI
IPC: B23B1/00
Filed: 2020-06-12
Abstract: Disclosed is a method for machining a workpiece by means of cutting same to obtain a surface with high integrity. In the method, after rough cutting, a workpiece is subjected to at least one instance of forward fine cutting and at least one instance of reverse fine cutting. Each instance of forward fine cutting and reverse fine cutting is carried out in multiple steps, and in two adjacent steps, the cut machined surface that has been subjected to the cutting of the previous step is subjected to the cutting of the later step. The specific steps of the forward fine cutting comprise: feeding a cutting tool forward from a forward feeding starting point, cutting the surface of the workpiece within the range of a first set distance to complete a first step of forward cutting for the workpiece, the workpiece returning to the starting point, feeding the workpiece forward again, and cutting the surface of the workpiece within a range twice the first set distance to complete a second step of forward cutting for the workpiece. The method for machining a workpiece by means of cutting same to obtain a surface with high integrity can reduce the residual tensile stress and the surface roughness of the surface of the workpiece and stabilize the hardness within a rational range.
Patent WO-2020253786-A1 (WO)
Inventor: CHEN XIAO
IPC: H04L12/24
Filed: 2020-06-18
Abstract: The present application discloses a decentralization processing method, a communication proxy, a host and a storage medium, being applied to a microservice system. A first communication proxy in the microservice system receives a first microservice request sent by a first microservice application. The first communication proxy determines, according to a target control plane rule, a microservice access address corresponding to the first microservice request. The first communication proxy sends the first microservice request to the second communication proxy having the microservice access address, and the second communication proxy is configured to forward the first microservice request to the second microservice application. Hence, the first communication proxy is able to send a microservice request to a corresponding second communication proxy, without the need for a control plane to route the microservice request, thereby effectively reducing traffic of the control plane for processing the microservice request, and effectively avoiding the impact on the control plane.
Patent WO-2021258332-A1 (WO)
Inventor: XUE ZHENG
IPC: G10L21/0232
Filed: 2020-06-24
Abstract: A sound processing method and apparatus, an unmanned aerial vehicle (110), and a computer readable storage medium. The sound processing method is applicable to the unmanned aerial vehicle (110). The unmanned aerial vehicle (110) comprises: a first sound acquisition apparatus (130) and a second sound acquisition apparatus (130). The method comprises: obtaining a first sound signal acquired by the first sound acquisition apparatus (130), the first sound signal comprising an effective sound signal transmitted to the first sound acquisition apparatus (130) by means of a first transmission path and a first noise signal of an unmanned aerial vehicle (S101); obtaining a second sound signal acquired by the second sound acquisition apparatus (130), the second sound signal comprising a second noise signal transmitted to the unmanned aerial vehicle (110) of the second sound acquisition apparatus (130) by means of a second transmission path (S102); and estimating the first noise signal according to the second sound signal to carry out denoising processing on the first sound signal (S103).
Patent WO-2022000537-A1 (WO)
Inventor: GUO SHUN
IPC: G02B7/02
Filed: 2020-07-10
Abstract: Provided is a lens module, comprising a housing provided with an accommodation cavity, a lens arranged in the accommodation cavity and being movable or in motion relative to the housing, and piezoelectric driving devices which connect the lens and the housing, wherein the housing comprises a bottom plate and side plates arranged on the bottom plate and circumferentially arranged around the lens; the bottom plate and the side plates enclose to form the accommodation cavity; at least two piezoelectric driving devices are provided such that, when the lens shakes, the two or more piezoelectric driving devices jointly act on the lens to drive the lens to make a tilting motion so as to achieve an anti-shake purpose; each piezoelectric driving device comprises a first piezoelectric plate and a second piezoelectric plate arranged in a stacked manner, the first piezoelectric plates are fixedly connected to the bottom plate, the second piezoelectric plates are fixedly connected to the lens, and by means of applying voltages to the first piezoelectric plates and the second piezoelectric plates in different directions, the piezoelectric driving devices are controlled to generate a driving force to drive the lens to make a tilting motion.
Patent WO-2022006907-A1 (WO)
Title: Communication method and apparatus
Inventor: LIU JING
IPC: H04W28/06
Filed: 2020-07-10
Abstract: Embodiments of the present application provide a communication method and apparatus. The method comprises: a user equipment (UE) determines first information corresponding to uplink data, the first information being used for identifying a service type or a bearer corresponding to the uplink data under a first standard; the UE determines second information according to the first information, the second information being used for identifying a service type or a bearer corresponding to the uplink data under a second standard, the second standard being different from the first standard; the UE sends the uplink data according to the second information using air interface technology of the second standard. On the basis of the solution, a UE obtains, according to first information, second information identifiable by the UE under a second standard, such that the UE can send uplink data according to the second information using air interface technology of the second standard, thus ensuring normal communication of the UE under cross-standard scenarios.
Patent WO-2021013031-A1 (WO)
Inventor: ZHAO WEI
IPC: H01M10/0567
Filed: 2020-07-16
Abstract: 本申请提供一种电解液及其制备方法和锂离子电池。该电解液包括如下重量份的组分：锂盐1～70份、添加剂0.01～60份以及溶剂20～99份；其中，前述添加剂是由环状多酮与金属锂进行配位反应得到，环状多酮的分子式为C nO n，n≥4。本申请提供的电解液，通过加入特定的添加剂，使锂离子电池的电池首次充放电效率显著提升，从而提升了锂离子电池的能量密度及循环寿命。