Automobile key with wireless charging function
By incorporating wireless charging and a light-emitting module into the car key, the problem of insufficient button battery power is solved, enabling convenient location and extending battery life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING HAOJIE AUTOMOBILE ELECTRONIC TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-15
AI Technical Summary
The button batteries in existing car keys have a small storage capacity, which leads to rapid power consumption, increases the frequency of replacement, and makes it difficult to easily find lost keys.
Design a car key with wireless charging function, which is continuously powered by a battery module connected to a wireless charging device, and has a light-emitting module on the key surface for easy finding.
It enables the key to be continuously illuminated, making it easier to find, reduces the frequency of battery replacement, increases battery capacity, and supports the display screen to be illuminated for extended periods.
Smart Images

Figure CN224244610U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of car key technology, and more specifically, relates to a car key with wireless charging. Background Technology
[0002] Car keys, as common items in daily life, are often easily forgotten or lost due to their small size. For example, a car key disclosed in patent document CN202220476562.3 (application date March 7, 2022) connects the car key to a mobile phone. When the distance between the car key and the communication mobile device exceeds a preset value, the chip circuit board triggers a prompt module to issue a warning, simultaneously providing a key-finding function to prevent forgetting the car key while using the vehicle. However, existing car keys typically use button batteries, which have a small storage capacity. Some intelligent module functions consume even more power during use, inevitably increasing the power consumption of the button battery and increasing the frequency of battery replacement. Therefore, there is a need for a car key that is easy to find and recharge. Utility Model Content
[0003] The technical problem this invention aims to solve is to provide a car key with wireless charging. This key continuously emits light, attracting attention and making it easy to locate the key, thus facilitating its search if lost. Furthermore, the inclusion of a wireless charging coil allows for wireless charging at any time, reducing the frequency of battery replacements.
[0004] The present invention relates to a car key with wireless charging, which includes a light-emitting module, a battery module, a key shell, and a hollow plate.
[0005] The perforated plate is located on the surface of the key shell; several functional patterns are laser-engraved on the surface of the perforated plate.
[0006] Both the light-emitting module and the battery module are located inside the cavity of the key housing;
[0007] The battery module has wireless charging capability and is electrically connected to the light-emitting module to power it;
[0008] The light-emitting module is located on the inside of the cutout plate and emits light when powered on; the illumination range of the light-emitting module covers the location of the functional pattern on the cutout plate so that the functional pattern can at least continuously emit light.
[0009] As a further improvement of this utility model, the light-emitting module includes an LED bead and a light guide carrier; the LED bead is fixedly disposed on one end of the light guide carrier, and the light guide carrier abuts against the surface of the hollow plate. The surface of the light guide carrier abutting against the hollow plate is the light source surface, so that the light guide carrier transmits the light generated by the LED bead to the outside.
[0010] As a further improvement of this utility model, the battery module includes a battery pack, a charging coil, and a control board;
[0011] The control board is fixedly installed inside the key housing; the battery pack and charging coil are respectively located at both ends of the lower side of the control board; the battery pack and charging coil are electrically connected via connecting wires; the battery pack is electrically connected to the control board to provide power; the battery pack is electrically connected to the light-emitting module to provide power.
[0012] As a further improvement of this utility model, it also includes several function buttons; the function buttons are electrically connected to the battery module and are embedded in the light guide carrier; the function of the function button matches the corresponding function of the function pattern on the cutout plate, and the function pattern is set on the upper side of the corresponding function button; the cutout plate is flexible so that it can be pressed and triggered by external pressure.
[0013] As a further improvement of this utility model, a mounting groove is provided on the upper side of the key shell, and a hollow plate is nested and snapped into the mounting groove.
[0014] As a further improvement of this utility model, the hollow plate and the key shell are integrally formed.
[0015] As a further improvement of this utility model, the key housing includes an upper housing and a lower housing; the upper housing and the lower housing are snapped together, and their interiors cooperate to form a space to accommodate the light-emitting module and the battery module.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. By setting up a light-emitting module, the battery pack provides power to the LED beads, enabling the key body to emit light continuously without interruption. The light source can attract people's attention, making it easy to determine the location of the key and making it easier to find if the key is lost.
[0018] 2. By setting up a battery module and connecting it to a wireless charging device, the battery pack can be charged, allowing the key to be wirelessly charged at any time. This increases the battery capacity, enabling the display to maintain its illumination for extended periods and reducing the frequency of battery replacements for users. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is an exploded view of the light-emitting module of this utility model;
[0021] Figure 3 This is an exploded view of the battery module of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] Light-emitting module 1, LED bead 11, light guide carrier 12, hollow plate 13, mounting slot 14, battery module 2, battery pack 21, charging coil 22, control board 23, key housing 3, upper housing 31, lower housing 32. Detailed Implementation
[0024] Specific Implementation Example 1: Please refer to Figures 1-3 A car key with wireless charging includes a light-emitting module 1, a battery module 2, a key housing 3, and a perforated plate 13. The perforated plate 13 is located on the surface of the key housing 3; several functional patterns are laser-engraved on the surface of the perforated plate 13; both the light-emitting module 1 and the battery module 2 are disposed in the internal cavity of the key housing 3; the battery module 2 has wireless charging function and is electrically connected to the light-emitting module 1 to supply power to it; the light-emitting module 1 is located inside the perforated plate 13 and emits light when powered; the illumination range of the light-emitting module 1 covers the location of the functional patterns on the perforated plate 13, so as to at least make the functional patterns continuously illuminate.
[0025] The key housing 3 includes an upper housing 31 and a lower housing 32. The upper housing 31 and the lower housing 32 are snapped together, and their interiors cooperate to form a space to accommodate the light-emitting module 1 and the battery module 2.
[0026] The light-emitting module 1 includes an LED bead 11 and a light guide carrier 12. It should be noted that in this embodiment, the material of the light guide carrier 12 can be any one of PMMA, PC, or PS. The LED bead 11 is fixedly disposed on one end of the light guide carrier 12, and the light guide carrier 12 abuts against the surface of the perforated plate 13. The surface of the light guide carrier 12 that abuts against the perforated plate 13 is the light source surface, so that the light guide carrier 12 transmits the light generated by the LED bead 11 outwards.
[0027] By emitting light through the LED bead 11 and transmitting light through the light guide carrier 12, the key body can be made to emit light continuously without interruption. The light source can attract people's attention, making it easy to determine the location of the key and making it easier to find if the key is lost.
[0028] As a feasible embodiment, the perforated plate 13 is disposed on the upper side of the light guide carrier 12, and an installation groove 14 is opened on the upper side of the key housing 3, and the perforated plate 13 is nested and snapped into the installation groove 14.
[0029] As another feasible embodiment, the perforated plate 13 is integrally formed with the key housing 3.
[0030] The battery module 2 includes a battery pack 21, a charging coil 22, and a control board 23; the car key also includes several function buttons 24. The function buttons 24 are electrically connected to the control board 23 and are embedded in the light guide carrier 12. The functions of the function buttons 24 correspond to the functions of the functional patterns on the cutout plate 13, and the functional patterns are all located on the upper side of the corresponding function button 24. The cutout plate 13 is flexible, allowing it to press and trigger the function buttons 24 when pressed by external forces. In this embodiment, its functions include at least unlocking, locking, and opening the car trunk. It should be noted that the function buttons are connected to the vehicle device via the signal control module of the control board 23 to control the vehicle, which is a conventional existing technology. The specific connection relationship and working principle are not described here.
[0031] The battery pack 21 and charging coil 22 are respectively located at both ends of the lower side of the control board 24. The battery pack 21 and charging coil 22 are electrically connected via a connecting wire. The battery pack 21 is electrically connected to the control board 23 to provide power. The battery pack 21 is electrically connected to the light-emitting module 1 to provide power.
[0032] The charging coil 22 enables the car key to have wireless charging capabilities, allowing it to work with the vehicle's wireless charging device for charging anytime. The charging area is located on the back of the car key, so when wirelessly charging the car key, simply place the back of the car key on the wireless charging device, and the charging coil 22 will sense the wireless charging device and charge the battery pack 21.
Claims
1. A car key with wireless charging, characterized in that: It includes a light-emitting module (1), a battery module (2), a key housing (3), and a hollow plate (13); The perforated plate (13) is located on the surface of the key shell (3); the surface of the perforated plate (13) is laser-engraved with several functional patterns; The light-emitting module (1) and the battery module (2) are both located in the internal cavity of the key housing (3); The battery module (2) has wireless charging capability and is electrically connected to the light-emitting module (1) to supply power to it; The light-emitting module (1) is located inside the cutout plate (13) and emits light when powered on; the illumination range of the light-emitting module (1) covers the location of the functional pattern on the cutout plate (13) so that the functional pattern can emit light continuously.
2. A car key with wireless charging according to claim 1, characterized in that: The light-emitting module (1) includes an LED bead (11) and a light guide carrier (12); the LED bead (11) is fixedly mounted on one end of the light guide carrier (12), and the light guide carrier (12) abuts against the surface of the hollow plate (13). The surface of the light guide carrier (12) abutting against the hollow plate (13) is the light source surface, so that the light guide carrier (12) transmits the light generated by the LED bead (11) to the outside.
3. A car key with wireless charging according to claim 1, characterized in that: The battery module (2) includes a battery pack (21), a charging coil (22), and a control board (23). The control board (23) is fixedly installed inside the key housing (3); the battery pack (21) and the charging coil (22) are respectively located at both ends of the lower side of the control board (23); the battery pack (21) and the charging coil (22) are electrically connected through a connecting wire; the battery pack (21) is electrically connected to the control board (23) to provide power; the battery pack (21) is electrically connected to the light-emitting module (1) to provide power.
4. A car key with wireless charging according to claim 2, characterized in that: It also includes several function buttons (24); the function buttons (24) are electrically connected to the battery module (2), and the function buttons (24) are embedded in the light guide carrier (12); the function of the function button (24) matches the corresponding function of the function pattern on the cutout plate (13), and the function pattern is set on the upper side of the corresponding function button (24); the cutout plate (13) is flexible so that it can press and trigger the function button (24) when it is pressed by the outside.
5. A car key with wireless charging according to claim 2, characterized in that: A mounting groove (14) is provided on the upper side of the key housing (3), and the hollow plate (13) is nested and snapped into the mounting groove (14).
6. A car key with wireless charging according to claim 1, characterized in that: The perforated plate (13) and the key shell (3) are integrally formed.
7. A car key with wireless charging according to claim 1, characterized in that: The key housing (3) includes an upper housing (31) and a lower housing (32); the upper housing (31) and the lower housing (32) are snapped together, and their interiors cooperate to form a space to accommodate the light-emitting module (1) and the battery module (2).