US-12616607-B2 - Portable hand warmer charging case and hand warmer assembly

US12616607B2US 12616607 B2US12616607 B2US 12616607B2US-12616607-B2

Abstract

A portable hand warmer charging case includes a case body. A placement chamber configured to place a hand warmer unit for charging is provided on the case body. The case body is provided with a first circuit board, a first charging unit, and a first battery. The first battery and the first charging unit are electrically connected to the first circuit board. When the hand warmer unit is placed in the placement chamber, the first circuit board is configured to output electrical energy, which is output by the first battery, from the first charging unit; and the first charging unit is configured to be adapted to a second charging unit on the hand warmer unit for use and transmit the electrical energy output by the first circuit board to the second charging unit on the hand warmer unit.

Inventors

Xueping Zhu

Assignees

Guangdong Aoyun Technology Co., Ltd.

Dates

Publication Date: 20260505
Application Date: 20250724
Priority Date: 20240709

Claims (12)

1 . A hand warmer assembly, comprising at least one hand warmer unit and a charging case, wherein the charging case comprises a case body, the case body comprises a placement chamber configured to place the hand warmer unit for charging, and the case body further comprises an opening, the hand warmer unit is put into the placement chamber from the opening; the case body further comprises a first circuit board, and a first charging unit; the first charging unit is electrically connected to the first circuit board; the hand warmer unit is provided with a second circuit board, a heating element, a second battery, and a second charging unit; the heating element, the second battery, and the second charging unit are all electrically connected to the second circuit board; when the hand warmer unit is placed in the placement chamber, the second charging unit is close to or in contact with the first charging unit; the first charging unit is configured to output electrical energy, which is output by the first circuit board, to the second charging unit; and the second charging unit charges, via the second circuit board, the second battery with the electrical energy output by the first charging unit, and the hand warmer unit is capable of warming hand through working of the heating element.
2 . The hand warmer assembly according to claim 1 , wherein the first charging unit is a conductive probe; the conductive probe is arranged at the bottom of the placement chamber; the second charging unit is a charging contact; the charging contact is located at a corresponding position of the hand warmer unit, and the charging contact is in contact with the conductive probe when the hand warmer unit is placed in the placement chamber.
3 . The hand warmer assembly according to claim 1 , further comprising another hand warmer unit and another placement chamber; and the two hand warmer units are detachably connected to each other, and the two hand warmer units are charged through the two placement chambers.
4 . The hand warmer assembly according to claim 3 , wherein the first hand warmer comprises a first outer surface and a first connecting surface opposite to the first outer surface; a first connecting portion is arranged on the first connecting surface; the second hand warmer comprises a second outer surface and a second connecting surface opposite to the second outer surface; a second connecting portion is arranged on the second connecting surface; the first connecting portion is connected to the second connecting portion in one of the following manners: a buckle, a hook and loop fastener, and magnetic suction of a plurality of magnetic suction assemblies, so that the first connecting surface is connected to the second connecting surface; and the first hand warmer and the second hand warmer are combined into a whole.
5 . The hand warmer assembly according to claim 1 , wherein the hand warmer unit is further provided with another charging interface configured to be externally connected with a power cable.
6 . A portable hand warmer assembly, comprising at least one hand warmer unit and a portable charging device, and the portable charging device comprises at least one placement portion configured for placing the at least one hand warmer unit; the portable charging device comprise a first charging unit, the at least one hand warmer unit comprises a second charging unit, after the at least one hand warmer unit is placed at the placement portion, the first charging unit is capable of charging the second charging unit; wherein the at least one placement portion is inwardly concave, and the at least one placement portion is exposed without a cover body, the at least one hand warmer unit is placed at the at least one placement portion in a manner that less than a half of length of the at least one hand warmer unit is inserted in the at least one placement portion and more than a half of the length of the at least one hand warmer unit is exposed outside the at least one placement portion, and the at least one hand warmer unit comprises an upper surface along the length direction, with the upper surface being capable of warming hand.
7 . The portable hand warmer assembly according to claim 6 , wherein the first charging unit charges the second charging unit through contact or through wireless manner.
8 . The portable hand warmer assembly according to claim 6 , wherein the upper surface of the at least one hand warmer unit has a switch or display elements.
9 . The portable hand warmer assembly according to claim 6 , wherein portable charging device has a display screen thereon.
10 . The portable hand warmer assembly according to claim 6 , wherein the at least one placement portion comprises two placement portions, and the two placement portions are parallel with each other.
11 . The portable hand warmer assembly according to claim 6 , wherein the first charging unit is a conductive probe; the conductive probe is arranged at the bottom of the placement chamber; the second charging unit is a charging contact; the charging contact is located at a corresponding position of the hand warmer unit, and the charging contact is in contact with the conductive probe when the hand warmer unit is placed in the placement chamber.
12 . A portable hand warmer assembly, comprising at least one hand warmer unit and a portable charging device, and the portable charging device comprises a placement portion configured for placing the at least one hand warmer unit; the portable charging device comprise a first charging unit, the at least one hand warmer unit comprises a second charging unit, after the at least one hand warmer unit is placed at the placement portion, the first charging unit is capable of charging the second charging unit; wherein the placement portion is a flat portion, and a wireless charging assembly is arranged under the placement portion, the wireless charging assembly comprises a first wireless charging coil, and a first magnetic member surrounding the first wireless charging coil, the at least one hand warmer unit comprises a second magnetic member and a second wireless charging coil arranged therein, the at least one hand warmer unit is capable of being attached to the placement portion by abstraction of the first magnetic member and the second magnetic member, and after the at least one hand warmer unit is abstracted to the placement portion, the first wireless charging coil corresponds to the second wireless charging coil to charge the at least one hand warmer unit.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The application is a Continuation-in-Part of the U.S. application Ser. No. 19/089,189 filed on Mar. 25, 2025, and entitled “PORTABLE HAND WARMER CHARGING CASE AND HAND WARMER ASSEMBLY”, which claims priority of Chinese patent application CN202520496218.4, filed on Mar. 19, 2025, and claims priority of Chinese Patent Application No. CN2025214839453, filed on Jul. 15, 2025, the entire disclosures of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of hand warmers, and in particular, to a portable hand warmer charging case and a hand warmer assembly. BACKGROUND Whether it is double-sided or single-sided, existing hand warmers on the market are usually only able to warm one hand or one body part, making it difficult to simultaneously warm both hands or multiple body parts. Especially when a user needs to perform different actions with the hands separately or when a user intends to use the hand warmer to warm multiple body parts, it is hard for the current hand warmers to meet the need of the user. Furthermore, to charge an existing hand warmer, the existing hand warmer needs to be connected to an external power supply through a power cable. However, when people go out, especially at outdoors, it is difficult to find a power supply to charge the hand warmers. Therefore, there is an urgent need on the market for a charging case that is convenient to carry and can charge a hand warmer. SUMMARY The present disclosure aims to provide a portable hand warmer charging case and a hand warmer assembly. The problem of inconvenience of charging of the existing hand warmer unit at outdoors is solved. In order to solve the technical problem, the technical scheme provided by the present disclosure is as follows. A portable hand warmer charging case includes a case body, wherein a placement chamber configured to place a hand warmer unit for charging is provided on the case body; the case body is provided with a first circuit board, a first charging unit, and a first battery; the first battery and the first charging unit are electrically connected to the first circuit board; when the hand warmer unit is placed in the placement chamber, the first circuit board is configured to output electrical energy, which is output by the first battery, from the first charging unit; and the first charging unit is configured to be adapted to a second charging unit on the hand warmer unit for use and transmit the electrical energy output by the first circuit board to the second charging unit on the hand warmer unit. Further, the first charging unit is a conductive probe, and the conductive probe is arranged at a bottom of the placement chamber. Further, the first circuit board is located at the bottom of the placement chamber, and the first battery is located behind the case body. Further, the first circuit board is provided with an indicator lamp unit configured to indicate a battery level state of the first battery and/or a charging state of the hand warmer unit. Further, the indicator lamp unit includes a plurality of light-emitting bodies arranged on the first circuit board, and the plurality of light-emitting bodies are arranged side by side; the case body is further provided with a light guide hood; the light guide hood is provided with an accommodating slot at a position corresponding to each light-emitting body; the light-emitting body is located in the accommodating slot; a first light guide hole that is communicated with the accommodating slots is provided on the light guide hood; and a second light guide hole is provided at a position, corresponding to the first light guide hole, on the case body. Further, the indicator lamp unit includes a battery level indicator lamp and a charging state indicator lamp, and the charging state indicator lamp is located next to the battery level indicator lamp. Further, the first circuit board is provided with a function button; the case body is provided with a pressing member connected to the function button; and when the function button is operated, the first circuit board outputs electrical energy to the first charging unit. Further, a first charging interface is provided on the first circuit board; and a first avoidance hole configured to avoid the first charging interface is provided on the case body. Further, the indicator lamp unit, the function button, and first charging interface are arranged side by side in a thickness direction of the charging case; and the function button is located between the indicator lamp unit and the first charging interface. Further, the case body includes a main body and a cover body connected to the main body to form the placement chamber; and the first circuit board, the first battery, the pressing member, the first avoidance hole, and the second light guide hole are all located on the main body. Further, the placement chamber includes a first placement slot;