US-12628302-B2 - Electronic device

US12628302B2US 12628302 B2US12628302 B2US 12628302B2US-12628302-B2

Abstract

An electronic device includes a shell, a contact member, a temperature sensor, and a circuit board. The shell has an accommodating space. The contact member is arranged on the shell, and at least part of a surface of the contact member forms an outer surface of the electronic device. The temperature sensor is arranged in the accommodating space and has a positive electrode and a negative electrode. The circuit board is arranged in the accommodating space and provided with a positive wire and a negative wire. The positive wire is connected to the positive electrode of the temperature sensor. The negative wire is connected to the negative electrode of the temperature sensor. At least one of the positive wire and the negative wire is thermally conductively connected to the contact member.

Inventors

Yinjiong Tan
Liang Bai
Chao Yao
Ruiying SHANG

Assignees

HONOR DEVICE CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220427
Priority Date: 20210826

Claims (13)

1 . An electronic device, characterized by comprising: a shell, having an accommodating space; a contact member, arranged on the shell, wherein at least part of a surface of the contact member forms an outer surface of the electronic device; a temperature sensor, arranged in the accommodating space and having a positive electrode and a negative electrode; and a circuit board, arranged in the accommodating space and provided with a positive wire and a negative wire, wherein the positive wire is connected to the positive electrode of the temperature sensor; the negative wire is connected to the negative electrode of the temperature sensor; at least one of the positive wire and the negative wire is thermally conductively connected to the contact member; the temperature sensor is configured to perform temperature measurement according to a temperature transferred from the at least one of the positive wire and the negative wire; the contact member and the temperature sensor are arranged on two opposite sides of the circuit board; the circuit board comprises a multi-layer wire structure formed by a metal layer and insulating dielectric layers that are alternately arranged in sequence; the positive wire comprises a positive wire body and a first metallized via, the positive wire body is formed on the metal layer, the first metallized via extends through surfaces on the two opposite sides of the circuit board, and the positive wire body is electrically connected to the first metallized via; and the negative wire comprises a negative wire body and a second metallized via, the negative wire body is formed on the metal layer, the second metallized via extends through the surfaces on the two opposite sides of the circuit board, and the negative wire body is electrically connected to the second metallized via.
2 . The electronic device according to claim 1 , wherein a thermal conductivity k1 of the contact member satisfies: k1≥15 W/m·K.
3 . The electronic device according to claim 1 , wherein a thermal conductivity k2 of the at least one of the positive wire or the negative wire satisfies: k2≥10 W/m·K.
4 . The electronic device according to claim 1 , further comprising a thermal insulator wrapped around at least part of an outer surface of the temperature sensor.
5 . The electronic device according to claim 1 , wherein at least one of the first metallized via and the second metallized via is thermally conductively connected to the contact member.
6 . The electronic device according to claim 5 , wherein the positive wire further comprises a first positive pad and a second positive pad arranged opposite to each other on two ends of the first metallized via, and the first positive pad is electrically connected to the positive electrode of the temperature sensor; the negative wire further comprises a first negative pad and a second negative pad arranged opposite to each other on one end of the second metallized via, and the first negative pad is electrically connected to the negative electrode of the temperature sensor; and at least one of the second positive pad and the second negative pad is thermally conductively connected to the contact member.
7 . The electronic device according to claim 1 , further comprising: a charging electrode and a detection electrode configured to detect vital sign information, wherein the charging electrode and the detection electrode are arranged on the shell; at least part of a surface of the charging electrode and at least part of a surface of the detection electrode form the outer surface of the electronic device; and at least one of the charging electrode and the detection electrode forms the contact member.
8 . The electronic device according to claim 7 , wherein an impedance Z of the contact member satisfies: Z≤1Ω.
9 . The electronic device according to claim 7 , wherein the detection electrode comprises a first electrode and a second electrode; the first electrode and the second electrode are both arranged on the shell and are spaced apart from each other; at least part of the first electrode and at least part of the second electrode are exposed from the shell; and the part of the first electrode exposed from the shell and the part of the second electrode exposed from the shell define an annular structure.
10 . The electronic device according to claim 9 , wherein the charging electrode comprises the positive electrode and the negative electrode arranged on an extending path of the annular structure or on an extended line of the extending path.
11 . The electronic device according to claim 9 , further comprising: a photoplethysmography detection device, wherein a detection light window of the photoplethysmography detection device is arranged on an inner side of the annular structure.
12 . The electronic device according to claim 7 , wherein the detection electrode is configured to detect an electrocardiogram electrode of an electrocardiogram.
13 . The electronic device according to claim 1 , wherein the shell comprises a cover plate, a protruding portion protruding away from a center of the accommodating space is arranged on the cover plate; and the contact member is arranged on the protruding portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a National Stage of International Application No. PCT/CN2022/089639, filed Apr. 27, 2022, which claims priority to Chinese Patent Application No. 202122038383.X, filed Aug. 26, 2021, both of which are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the technical field of electronic devices, and in particular, to an electronic device. BACKGROUND As living standards improve, people attach increasing importance to their health statuses. In order to help people learn their health statuses, increasing electronic devices such as watches and bracelets are configured with a health monitoring function, such as temperature measurement. However, accuracy of temperature measurement by current electronic devices is low. SUMMARY This application provides an electronic device, to improve measurement accuracy of a temperature sensor, shorten a measurement time of the temperature sensor, and improve sensitivity of the temperature sensor. To achieve the above purpose, embodiments of this application adopt the following technical solutions: This application provides an electronic device. The electronic device includes a shell, a contact member, a temperature sensor, and a circuit board. The shell has an accommodating space. The contact member is arranged on the shell, and at least part of a surface of the contact member forms an outer surface of the electronic device. That is to say, a part of the surface of the contact member forms the outer surface of the electronic device, or an entire surface of the contact member forms the outer surface of the electronic device. The temperature sensor is arranged in the accommodating space and has a positive electrode and a negative electrode. The circuit board is arranged in the accommodating space and provided with a positive wire and a negative wire. The positive wire is connected to the positive electrode of the temperature sensor. The negative wire is connected to the negative electrode of the temperature sensor. At least one of the positive wire and the negative wire is thermally conductively connected to the contact member. The temperature sensor is configured to perform temperature measurement according to a temperature transferred from the at least one of the positive wire and the negative wire. According to the electronic device provided in this application, heat conduction is enabled between at least one of the positive wire and the negative wire of the circuit board and the contact member, so that the temperature sensor can perform temperature measurement according to the temperature transferred from the at least one of the positive wire and the negative wire. In this way: heat conduction efficiency of heat transfer from a human skin to the temperature sensor is improved, a temperature measurement time is shortened, sensitivity of the temperature sensor is enhanced, and a heat loss during the heat conduction is reduced, thereby improving accuracy of temperature measurement. In a possible implementation, a thermal conductivity k1 of the contact member satisfies: k1≥15 W/m·K. Therefore, heat conduction performance of the contact member can be ensured, so that a temperature of the human skin can be quickly transferred to the contact member, and the temperature in the contact member can be quickly transferred to the temperature sensor for detection. In this way, a temperature transfer time is shortened, thereby shortening a temperature detection time, and improving the detection sensitivity of the temperature sensor. In a possible implementation, the electronic device further includes an insulating and thermally conductive member, and the at least one of the positive wire and the negative wire is thermally conductively connected to the contact member by the insulating and thermally conductive member. In this way: the temperature in the contact member can be transferred to the positive wire and/or the negative wire through the insulating and thermally conductive member. Compared with a solution in which the contact member is directly connected to the positive wire and/or the negative wire, in the solution of the embodiments of this application, the heat can be transferred more effectively, and heat dissipation can be reduced. In addition, even if the contact member is a conductive member, the contact member can still be prevented from being electrified, thereby ensuring use safety of the electronic device. In a possible implementation, a thermal conductivity k2 of the insulating and thermally conductive member satisfies: k2≥10 W/m·K. Therefore, the heat conduction performance of the insulating and thermally conductive member can be ensured, so that the temperature in the contact member can be quickly transferred to the temperature sensor for detection. In a possible implementation, the electronic device further includes a thermal insulator wrapped around at least part of a