WO2021119937A1 - 无线充电线圈模组及无线充电装置 - Google Patents

无线充电线圈模组及无线充电装置 Download PDF

Info

Publication number
WO2021119937A1
WO2021119937A1 PCT/CN2019/125697 CN2019125697W WO2021119937A1 WO 2021119937 A1 WO2021119937 A1 WO 2021119937A1 CN 2019125697 W CN2019125697 W CN 2019125697W WO 2021119937 A1 WO2021119937 A1 WO 2021119937A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
wireless charging
spiral
spiral coil
module
Prior art date
Application number
PCT/CN2019/125697
Other languages
English (en)
French (fr)
Inventor
刘泽南
汪宗
陈勇利
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/125697 priority Critical patent/WO2021119937A1/zh
Publication of WO2021119937A1 publication Critical patent/WO2021119937A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections

Definitions

  • the present invention relates to the technical field of wireless charging, in particular to a wireless charging coil module and a wireless charging device.
  • Wireless charging technology also known as non-contact inductive charging, is based on the principle of inductive coupling, in which energy is transferred from the power supply device to the electrical equipment, and the energy is used to charge the battery after the electrical equipment.
  • the existing wireless charging receiving coils are mainly divided into two types of processes, one is the Litz wire winding process, and the other is the FPC process.
  • the coils under the Litz wire process are more cost-effective, while the FPC process coils are freely routed and easy to implement. Alien structure.
  • the receiving end coil of the existing wireless charging receiving coil is realized by a single-layer winding. In order to ensure that the coil has sufficient self-inductance, the overall occupied area is relatively large.
  • the purpose of the present invention is to provide a wireless charging coil module to solve the problem that the receiving end coil of some wireless charging receiving coil is realized by a single-layer winding. In order to ensure that the coil has sufficient self-inductance, the overall occupied area is too large.
  • one aspect of the present invention provides a wireless charging coil module
  • the wireless charging coil module includes a first spiral coil and a second spiral coil
  • the first spiral coil The coil is formed by winding outwards in a first spiral direction from a first starting point
  • the second spiral-shaped coil is formed by winding outwards in a second spiral direction from the second starting point.
  • a circling direction is opposite to the second circling direction, and the first starting point and the second starting point are directly opposite and electrically connected in the stacking direction.
  • the first spiral coil and the second spiral coil are respectively located on two mutually parallel planes.
  • the number of turns of the first spiral coil and the second spiral coil are both 7 turns, so that the wireless charging coil module can reach a self-inductance value of 8 ⁇ 0.5 uH.
  • the distance from the outermost circle of the first spiral coil to the geometric center of the first spiral coil is 40 ⁇ 3mm, and the outermost circle of the second spiral coil reaches the first spiral coil.
  • the distance range between the geometric centers of the two spiral coils is 40 ⁇ 3mm.
  • the first spiral coil and the second spiral coil are formed on a flat FPC (Flexible Printed Circuit, flexible printed circuit board).
  • the wireless charging coil module is a receiving end wireless charging coil module.
  • a wireless charging device includes a transmitting circuit, a primary coil, a secondary coil, and a receiving circuit electrically connected in sequence, and the secondary coil adopts the above-mentioned wireless charging coil module.
  • the wireless charging coil module includes a first spiral coil and a second spiral coil that are stacked.
  • the first spiral coil is formed by winding outward along a first spiral direction from a first starting point.
  • the two spiral coils are formed by winding outwards in the second spiral direction from the second starting point; thus, the wireless charging coil module can ensure that the module has sufficient self-inductance while reducing the wireless charging coil.
  • the size of the module is not limited to reduce the wireless charging coil.
  • FIG. 1 is a three-dimensional structural diagram of a wireless charging coil module provided by an embodiment of the present invention
  • Figure 2 is a front view of a wireless charging coil module provided by an embodiment of the present invention.
  • Figure 3 is an exploded schematic diagram of a wireless charging coil module provided by an embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a wireless charging device provided by an embodiment of the present invention.
  • FIG. 5 is a diagram of a use state of a wireless charging coil module provided by an embodiment of the present invention.
  • Fig. 6 shows the wiring form of the existing wireless charging coil module.
  • the first spiral coil 11, the first starting point; 20, the second spiral coil; 21, the second starting point; 30, the transmitting circuit; 40, the primary coil; 50, the secondary coil; 60, Receiving circuit; 100, wireless charging coil module; 200, housing.
  • an embodiment of the present invention provides a wireless charging coil module 100.
  • the wireless charging coil module 100 includes a first spiral coil 10 and a second spiral coil 20.
  • the winding directions of a spiral coil 10 and a second spiral coil 20 are opposite and do not intersect each other, the first starting point 11 of the innermost winding of the first spiral coil 10 and the innermost winding of the second spiral coil 20
  • the winding second starting point 21 is electrically connected; preferably, the first starting point 11 and the second starting point 21 are directly opposite and electrically connected in the stacking direction; more preferably, the first spiral coil 10
  • a support member is provided between the second spiral coil 20 and the first spiral coil 10 and the second spiral coil 20 to keep parallel to each other; please refer to FIG.
  • the wireless charging coil module 100 can reduce the size of the wireless charging coil module 100 while ensuring that the module has sufficient self-inductance.
  • the winding direction of the first spiral coil 10 is clockwise, and the winding direction of the second spiral coil 20 is counterclockwise;
  • the first spiral coil The number of turns of 10 and the second spiral coil 20 are both, but not limited to, 7 turns, which can make the wireless charging coil module 100 reach a self-inductance value of 8 ⁇ 0.5uH;
  • the first spiral coil 10 The distance between the outermost circle of the spiral coil and the geometric center O1 point of the first spiral coil 10 is 40 ⁇ 3mm; the outermost circle of the second spiral coil 20 and the geometric center O2 point of the second spiral coil 20
  • the distance of the current single-layer FPC coil is 40 ⁇ 3mm; in order to meet the self-inductance value of about 8uH, 14 turns of wiring are required, and the final self-inductance value is 8.4uH.
  • the wireless charging coil module 100 in this embodiment reduces the size of the wireless charging coil module 100.
  • the first spiral coil 10 and the second spiral coil 20 are formed in a flat FPC (Flexible Printed Circuit, flexible printed circuit board); in one embodiment, the first spiral coil 10 and the second spiral coil 20 are stacked on each other; the existing single-layer FPC coil (please refer to FIG.
  • the lower winding layer and the upper lead layer includes The lower winding layer and the upper lead layer, the lower winding layer is a spiral, and the upper lead layer is a straight line; in this embodiment, the upper lead layer of the existing single-layer FPC coil is replaced with the first spiral coil 10, and according to The self-inductance standard of about 8uH has performed many experiments on the outer diameter length of the two spiral coils after replacement, and finally obtained the optimal result, which is the first spiral coil 10 and the second spiral coil 10 and the second spiral coil.
  • the diameter of the outermost ring of the shaped coil 20 is 40 ⁇ 3mm; since the wireless charging coil in this embodiment only replaces the wire winding method in the thickness direction, compared with the existing single-layer FPC coil, the wireless charging coil The overall thickness will not exceed the thickness of the existing single-layer FPC coil.
  • the wireless charging coil module 100 is a wireless charging coil module 100 at the receiving end.
  • another embodiment of the present invention provides a wireless charging device that includes a transmitting circuit 30, a primary coil 40, a secondary coil 50, and a receiving circuit 60 electrically connected in sequence.
  • the primary coil 50 adopts the above-mentioned wireless charging coil module 100; the transmitting circuit 30 is connected to the direct current, and performs quadrature oscillation and amplification processing on the direct current, and then transmits the amplified signal (that is, energy) to the primary coil 40, Then the amplified signal is coupled to the secondary coil 50.
  • the secondary coil 50 receives the coupled energy, the power becomes larger and converts it into a voltage and current that can charge the battery. After rectification and filtering, it provides electrical energy to complete wireless charging. the process of.
  • FIG. 5 another embodiment of the present invention provides a use state diagram of the wireless charging coil module 100, in which, in the use state, the wireless charging coil module 100 is installed on the inner surface of a housing 200, Its function has been explained in detail in the embodiment of the wireless charging device, so it will not be repeated here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种无线充电线圈模组（100）及无线充电装置，所述无线充电线圈模组（100）包括叠设的第一盘旋状线圈（10）和第二盘旋状线圈（20），所述第一盘旋状线圈（10）从第一起始点（11）开始沿着第一盘旋方向向外逐圈旋绕而成，所述第二盘旋状线圈（20）从第二起始点（21）开始沿着第二盘旋方向向外逐圈旋绕而成；从而使无线充电线圈模组（100）在保证模组拥有足够自感值的同时，又减小了无线充电线圈模组（100）的尺寸。

Description

无线充电线圈模组及无线充电装置 技术领域
本发明涉及无线充电技术领域，尤其涉及一种无线充电线圈模组及无线充电装置。
 背景技术
无线充电技术，又称非接触式感应充电，基于电感耦合原理，由供电设备将能量传输至用电设备，用电设备后将能量用于电池充电的技术。
现有的无线充电接收线圈主要分为两类工艺，一类是利兹线绕线工艺，另一类是FPC工艺，利兹线工艺下的线圈性价比较高，而FPC工艺线圈走线自由，易于实现异形结构。
现有的无线充电接收线圈接收端线圈由单层绕线实现，为确保线圈拥有足够自感，整体占用面积偏大。
 技术问题
本发明的目的在于提供一种无线充电线圈模组，以解决有的无线充电接收线圈接收端线圈由单层绕线实现，为确保线圈拥有足够自感，整体占用面积偏大的问题。
 技术解决方案
本发明的技术方案如下：本发明一方面提供了一种无线充电线圈模组，所述无线充电线圈模组包括叠设的第一盘旋状线圈和第二盘旋状线圈，所述第一盘旋状线圈从第一起始点开始沿着第一盘旋方向向外逐圈旋绕而成，所述第二盘旋状线圈从第二起始点开始沿着第二盘旋方向向外逐圈旋绕而成，所述第一盘旋方向与所述第二盘旋方向相反，所述第一起始点和所述第二起始点在叠设方向正对且电连接。
作为一种改进，所述第一盘旋状线圈和所述第二盘旋状线圈分别位于两个相互平行的平面上。
作为一种改进，所述第一盘旋状线圈和第二盘旋状线圈的旋绕圈数均为7圈、以使所述无线充电线圈模组达到8±0.5uH的自感值。
作为一种改进，所述第一盘旋状线圈的最外圈到所述第一盘旋状线圈的几何中心的距离范围为40±3mm，所述第二盘旋状线圈的最外圈到所述第二盘旋状线圈的几何中心的距离范围为40±3mm。
作为一种改进，所述第一盘旋状线圈和第二盘旋状线圈成型于平面FPC（Flexible Printed Circuit，柔性印刷电路板）。
作为一种改进，所述无线充电线圈模组为接收端无线充电线圈模组。
一种无线充电装置，所述无线充电装置包括依次电连接的发射电路、初级线圈、次级线圈及接收电路，所述次级线圈采用上述的无线充电线圈模组。
 有益效果
本发明的有益效果在于：
无线充电线圈模组包括叠设的第一盘旋状线圈和第二盘旋状线圈，所述第一盘旋状线圈从第一起始点开始沿着第一盘旋方向向外逐圈旋绕而成，所述第二盘旋状线圈从第二起始点开始沿着第二盘旋方向向外逐圈旋绕而成；从而使无线充电线圈模组在保证模组拥有足够自感值的同时，又减小了无线充电线圈模组的尺寸。
 附图说明
图1为本发明一实施例提供的无线充电线圈模组的立体结构图；
图2为本发明一实施例提供的无线充电线圈模组的正视图;
图3为本发明一实施例提供的无线充电线圈模组的爆炸示意图;
图4为本发明一实施例提供的无线充电装置的结构框图；
图5为本发明一实施例提供的无线充电线圈模组的使用状态图；
图6为现有的无线充电线圈模组的走线形式。
图中：10、第一盘旋状线圈；11、第一起始点；20、第二盘旋状线圈；21、第二起始点；30、发射电路；40、初级线圈；50、次级线圈；60、接收电路；100、无线充电线圈模组；200、壳体。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
请参看图1和2，本发明的一实施方式提供了一种无线充电线圈模组100，所述无线充电线圈模组100包括第一盘旋状线圈10和第二盘旋状线圈20，所述第一盘旋状线圈10和第二盘旋状线圈20的旋绕方向相反且相互之间不相交，所述第一盘旋状线圈10最内圈旋绕的第一起始点11与第二盘旋状线圈20最内圈旋绕的第二起始点21电连接；优选地，所述第一起始点11和所述第二起始点21在叠设方向正对且电连接；更为优选地，所述第一盘旋状线圈10与第二盘旋状线圈20之间设有支撑件、以使所述第一盘旋状线圈10与第二盘旋状线圈20相互保持平行；请参看图6，图6为现有的无线充电线圈模组的走线形式（一条螺旋线+与该条螺旋线起始点电连接的一条直线）；在本实施例中，通过将原来的一条螺旋线+一条直线更换为两条螺旋线，将原本面积较大的单层线圈分为两个内径与原线圈一致，绕线圈数较少的小盘旋状线圈，再将这两个小盘旋状线圈通过顺接串联的方式整合在一起来实现大线圈的作用，从而使无线充电线圈模组100在保证模组拥有足够自感值的同时，又减小了无线充电线圈模组100的尺寸。
请参看图3，在本实施例中，所述第一盘旋状线圈10的绕线方向为顺时针方向，第二盘旋状线圈20的绕线方向为逆时针方向；所述第一盘旋状线圈10和第二盘旋状线圈20的旋绕圈数均为但不限于7圈、能够使所述无线充电线圈模组100达到8±0.5uH的自感值即可；所述第一盘旋状线圈10的盘旋状线圈最外圈与第一盘旋状线圈10的几何中心O1点的距离为40±3mm；所述第二盘旋状线圈20的最外圈与第二盘旋状线圈20的几何中心O2点的距离为40±3mm；而现有的单层FPC线圈，为了满足8uH左右的自感值，需要进行14圈的走线，最终自感值为8.4uH，经测量，现有的单层FPC线圈的外径长度为28*2=56mm，整体尺寸偏大，本实施例中的无线充电线圈模组100相对于现有的单层FPC线圈，减小了无线充电线圈模组100的尺寸。
在本实施例中，所述第一盘旋状线圈10和第二盘旋状线圈20成型于一个平面FPC（Flexible Printed Circuit，柔性印刷电路板）；在一实施例中，所述第一盘旋状线圈10与第二盘旋状线圈20相互叠设；现有的单层FPC线圈（请再参看图6），包括下层绕线层和上层引线层，下层绕线层为螺旋线，上层引线层为直线；本实施例中将现有的单层FPC线圈的上层引线层更换为第一盘旋状线圈10，并根据8uH左右的自感值的标准对更换后的两个盘旋状线圈的外径长度进行多次实验，最终得出最优结果，最优结果也就是所述第一盘旋状线圈10和第二盘旋状线圈20的最外圈直径为40±3mm；由于本实施例中无线充电线圈在厚度方向仅做了引线绕线方式的替换，所以与现有的单层的FPC线圈相比，无线充电线圈的整体厚度不会超过现有的单层的FPC线圈的厚度。
作为一种优选，所述无线充电线圈模组100为接收端无线充电线圈模组100。
请参看图4，本发明的另一实施方式提供了一种无线充电装置，所述无线充电装置包括依次电连接的发射电路30、初级线圈40、次级线圈50及接收电路60，所述次级线圈50采用上述无线充电线圈模组100；所述发射电路30与直流电电连接，并对直流电进行正交震荡及放大处理，然后将放大后的信号（也就是能量）输送给初级线圈40，再将放大后的信号耦合给次级线圈50，次级线圈50接收耦合的能量后，功率变大，转换为可以给电池充电的电压和电流，经过整流滤波处理以后，提供电能，完成无线充电的过程。
请参看图5，本发明的另一实施方式提供了一种无线充电线圈模组100的使用状态图，其中，在使用状态时，无线充电线圈模组100安装在一壳体200的内表面，其作用在无线充电装置的实施例中已经详细说明，因此不在赘述。
需要说明的是，本发明实施例中所有方向性指示（诸如上、下、内、外、顶部、底部……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
还需要说明的是，当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (7)

  1. 一种无线充电线圈模组，其特征在于，所述无线充电线圈模组包括叠设的第一盘旋状线圈和第二盘旋状线圈，所述第一盘旋状线圈从第一起始点 开始沿着第一盘旋方向向外逐圈旋绕而成，所述第二盘旋状线圈从第二起始点开始沿着第二盘旋方向向外逐圈旋绕而成，所述第一盘旋方向与所述第二盘旋方向相反，所述第一起始点和所述第二起始点在叠设方向正对且电连接。
  2. 根据权利要求1所述的无线充电线圈模组，其特征在于：所述第一盘旋状线圈和所述第二盘旋状线圈分别位于两个相互平行的平面上。
  3. 根据权利要求1所述的无线充电线圈模组，其特征在于：所述第一盘旋状线圈和第二盘旋状线圈的旋绕圈数均为7圈、以使所述无线充电线圈模组达到8±0.5uH的自感值。
  4. 根据权利要求1所述的无线充电线圈模组，其特征在于：所述第一盘旋状线圈的最外圈到所述第一盘旋状线圈的几何中心的距离范围为40±3mm，所述第二盘旋状线圈的最外圈到所述第二盘旋状线圈的几何中心的距离范围为40±3mm。
  5. 根据权利要求1所述的无线充电线圈模组，其特征在于：所述第一盘旋状线圈和第二盘旋状线圈成型于平面FPC（Flexible Printed Circuit，柔性印刷电路板）。
  6. 根据权利要求1所述的无线充电线圈模组，其特征在于：所述无线充电线圈模组为接收端无线充电线圈模组。
  7. 一种无线充电装置，其特征在于：所述无线充电装置包括依次电连接的发射电路、初级线圈、次级线圈及接收电路，所述次级线圈采用如权利要求1-6任一项所述的无线充电线圈模组。
PCT/CN2019/125697 2019-12-16 2019-12-16 无线充电线圈模组及无线充电装置 WO2021119937A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/125697 WO2021119937A1 (zh) 2019-12-16 2019-12-16 无线充电线圈模组及无线充电装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/125697 WO2021119937A1 (zh) 2019-12-16 2019-12-16 无线充电线圈模组及无线充电装置

Publications (1)

Publication Number Publication Date
WO2021119937A1 true WO2021119937A1 (zh) 2021-06-24

Family

ID=76478113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/125697 WO2021119937A1 (zh) 2019-12-16 2019-12-16 无线充电线圈模组及无线充电装置

Country Status (1)

Country Link
WO (1) WO2021119937A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202584978U (zh) * 2012-04-01 2012-12-05 东莞市健阳达电子有限公司 一种用于无线充电器的线圈
CN203103042U (zh) * 2013-01-16 2013-07-31 西北台庆科技股份有限公司 用于无线充电或nfc近场感应的线圈装置
KR20140098047A (ko) * 2014-07-25 2014-08-07 삼성전기주식회사 무선 충전용 코일 및 이를 구비하는 무선 충전 장치
CN208522076U (zh) * 2018-08-06 2019-02-19 东莞市仕研电子通讯有限公司 一种手机后壳的双层式nfc天线结构
CN109921522A (zh) * 2019-03-07 2019-06-21 上海德门电子科技有限公司 具有无线充电功能的线圈装置
CN110408360A (zh) * 2019-07-31 2019-11-05 横店集团东磁股份有限公司 一种绝缘胶液及其制备方法和应用以及由其得到的隔磁片

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202584978U (zh) * 2012-04-01 2012-12-05 东莞市健阳达电子有限公司 一种用于无线充电器的线圈
CN203103042U (zh) * 2013-01-16 2013-07-31 西北台庆科技股份有限公司 用于无线充电或nfc近场感应的线圈装置
KR20140098047A (ko) * 2014-07-25 2014-08-07 삼성전기주식회사 무선 충전용 코일 및 이를 구비하는 무선 충전 장치
CN208522076U (zh) * 2018-08-06 2019-02-19 东莞市仕研电子通讯有限公司 一种手机后壳的双层式nfc天线结构
CN109921522A (zh) * 2019-03-07 2019-06-21 上海德门电子科技有限公司 具有无线充电功能的线圈装置
CN110408360A (zh) * 2019-07-31 2019-11-05 横店集团东磁股份有限公司 一种绝缘胶液及其制备方法和应用以及由其得到的隔磁片

Similar Documents

Publication Publication Date Title
JP3226466U (ja) コイルモジュールおよびそれを用いたワイヤレス電気エネルギー送信回路
JP5942084B2 (ja) 非接触充電モジュール及びこれを用いた非接触充電機器と携帯機器
US8547058B2 (en) Non-contact charging module and reception-side and transmission-side non-contact charging apparatuses using the same
US11050264B2 (en) Wireless power transmission apparatus
WO2012101731A1 (ja) 非接触充電モジュール及びこれを用いた受信側及び送信側非接触充電機器
JP5845405B2 (ja) 受信側非接触充電モジュール及び受信側非接触充電機器
JP2014112728A (ja) 薄膜コイル及びこれを備える電子機器
CN103931078A (zh) 无线电力中继器
JP6551853B2 (ja) 送電装置、送電装置を搭載した車両及び無線電力伝送システム
JPWO2017038797A1 (ja) フレキシブルプリント配線板及び非接触充電システム
JP2010259171A (ja) 非接触伝送装置
US20160344223A1 (en) Wireless power charging system
WO2021119937A1 (zh) 无线充电线圈模组及无线充电装置
JP2010022098A (ja) 電力変換伝送装置および非接触型被充電装置
JP2013093989A (ja) 非接触充電モジュール及びこれを用いた非接触充電機器及び携帯端末
US9543771B2 (en) Telescopic transmission cable device and mobile terminal
JPS6316289Y2 (zh)
CN111354546A (zh) 无线充电线圈模组及无线充电装置
JP5938559B2 (ja) 非接触充電モジュール及びこれを用いた非接触充電機器
JP2002170925A (ja) 球状半導体装置
CN218676746U (zh) 一种用于中远距离微型胶囊无线供电的柔性接收线圈装置
CN215120164U (zh) 无线充电线圈
US11381117B2 (en) Wireless charging apparatus for preventing magnetic field cancellation between adjacent coils
CN216389026U (zh) 一种绕线板、线圈结构与无线充电装置
JP5358699B2 (ja) 携帯端末

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19956807

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19956807

Country of ref document: EP

Kind code of ref document: A1