Novel wireless power bank

Abstract

The invention discloses a novel wireless power bank which comprises a shell, a battery module, a wireless charging module and a control module, wherein the battery module, the wireless charging module and the control module are arranged in the shell. In order to solve the heat dissipation problem during high-power charging and discharging, a liquid cooling and air cooling combined composite heat dissipation system is adopted. The liquid cooling system comprises a liquid cooling plate in heat conduction contact with the battery pack, a micro-motion water pump and a liquid cooling pipeline, and a circulation loop is formed to efficiently absorb and transfer heat; the air cooling system comprises a heat dissipation air channel composed of a heat dissipation fan and metal heat dissipation fins and is used for cooling the heat dissipation part of the liquid cooling system in a forced convection mode. The liquid cooling plate and the metal cooling fins are in heat conduction contact to form a heat exchange interface, and efficient cooperation of liquid cooling and air cooling is achieved. The control system intelligently starts and stops the heat dissipation component according to feedback of the temperature sensor, and energy consumption and noise are optimized. The device is compact in structure and high in heat dissipation capability, can effectively control the internal temperature, improves the charging efficiency, prolongs the service life of the battery, guarantees the use safety, and is suitable for a high-power wireless charging scene.

Description

Technical Field

[0001] This invention relates to the field of mobile power technology, and in particular to a novel wireless power bank. Background Technology

[0002] With the widespread adoption of electronic devices, wireless power banks have become increasingly popular due to their convenience. However, during high-current wireless charging or fast wired charging, the built-in battery in a power bank generates a significant amount of heat. Traditional power banks typically employ passive cooling or simple air-cooling systems for heat dissipation. These methods have limited efficiency, especially for high-energy-density batteries, where heat often concentrates in localized areas such as the tabs and the center of the cell, forming "hot spots." Simple air cooling cannot quickly and evenly remove this concentrated heat, resulting in persistently high battery temperatures. This not only affects charging efficiency and accelerates battery aging but also poses a safety hazard of thermal runaway, severely hindering the development of wireless power banks towards higher power and higher capacity.

[0003] Therefore, given the shortcomings of existing technologies, it is necessary to design a new type of wireless power bank to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of the present invention and for the convenience of those skilled in the art to understand it. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background of the present invention. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention aims to disclose a novel wireless power bank.

[0006] This invention discloses a novel wireless charging bank, comprising a housing, an air inlet and an air outlet on the housing, and an interior thereof containing:

[0007] Built-in battery module, including a rechargeable battery pack;

[0008] A wireless charging module, including a wireless charging coil;

[0009] The heat dissipation system includes a cooling fan and a heat dissipation duct made of metal heat sinks. The exhaust port of the cooling fan is connected to the heat dissipation duct, and the exhaust port of the housing corresponds to the outlet of the heat dissipation duct.

[0010] The liquid cooling system includes at least one liquid cooling plate that is thermally connected to a rechargeable battery pack, a micro water pump disposed on the liquid cooling plate, and liquid cooling pipes, wherein the micro water pump drives the coolant to circulate within the liquid cooling pipes.

[0011] The control module includes a main control board, which is electrically connected to the wireless charging coil, the rechargeable battery pack, the micro-pump, and the cooling fan.

[0012] The main heat-generating components on the main control board are in thermal contact with the metal heat sink; a portion of the liquid cooling plate is in thermal contact with the metal heat sink, forming a heat exchange interface that transfers heat from the liquid cooling system to the heat dissipation duct; the cooling fan is located on one side of the air inlet, and its air inlet is connected to the air inlet through a non-linear air duct.

[0013] The preferred technical solution involves two liquid cooling plates, each attached to one of the two large, opposite surfaces of the rechargeable battery pack, with one of the liquid cooling plates positioned between the rechargeable battery pack and the wireless charging coil. This design maximizes the heat dissipation area of ​​the battery pack while simultaneously using the liquid cooling plate to isolate the heat between the battery pack and the wireless charging coil.

[0014] Preferred technical solution: The micro-particle pump is a piezoelectric ceramic micro-pump. Piezoelectric ceramic micro-pumps have the advantages of small size, low power consumption, low noise, and precise control. They can also be driven by vibration to reduce heat dissipation energy consumption.

[0015] Preferred technical solution: An auxiliary control board is also provided on the liquid cooling plate. The micro pump is electrically connected to the auxiliary control board, and the auxiliary control board is communicatively connected to the main control board and receives instructions from the main control board to drive the micro pump.

[0016] The preferred technical solution is that the flow path of the liquid cooling pipes within the liquid cooling plate is configured to pass through positions corresponding to the tab area, center area, and edge area of ​​the rechargeable battery pack. This flow path design enables precise and balanced heat dissipation, addressing the uneven heating characteristics of the battery pack.

[0017] The preferred technical solution: The housing surface is equipped with operation buttons and a display screen electrically connected to the main control board, which is connected to a temperature sensor. The control module is configured to simultaneously or sequentially activate the liquid cooling system and the heat dissipation system when the temperature detected by the temperature sensor reaches a preset threshold. This achieves intelligent temperature control, on-demand heat dissipation, and a balance between heat dissipation effect and energy consumption / noise.

[0018] Preferred technical solution: A power switch is connected in series in the power supply circuit between the main control board and the rechargeable battery pack, and the pressing part of the power switch is exposed on the surface of the casing. Providing an independent physical switch enhances safety.

[0019] A preferred technical solution: A contact connector electrically connected to the main control board is embedded on the surface of the housing. The contact connector includes at least one power contact and at least one data contact, used to establish an external conductive connection to achieve charging / discharging or data communication. The power contact can be used as a charging / discharging interface or to power additional expansion modules, while the data contact is used for signal transmission with additional expansion modules. The connection methods for the expansion modules include, but are not limited to, magnetic attraction, external snap-fit, or adhesive bonding.

[0020] Preferred technical solution: The casing is also equipped with a Type-C interface, which is electrically connected to the main control board to realize the charging and discharging management of the rechargeable battery pack.

[0021] Preferred technical solution: The housing has a magnetic base embedded in the area corresponding to the wireless charging coil, and the main body of the housing is made of thermally conductive plastic or metal alloy material.

[0022] Due to the application of the above technical solution, the beneficial effects of this invention compared with the prior art are as follows:

[0023] This invention combines a liquid cooling system and an air cooling system. The liquid cooling system directly contacts the main heat sources, such as the battery pack, through a liquid cooling plate, efficiently absorbing and transferring heat. The air cooling system, through a heat dissipation duct and fan, rapidly dissipates the heat collected at the heat exchange interface by the liquid cooling system and the heat generated by the main control board's heating elements. This heat dissipation mode achieves precise and efficient cooling of critical internal heat sources. Simultaneously, this design optimizes the airflow; the non-direct-connection air intake design prevents external air from being directly sucked away by the cooling fan after entering the casing, promoting airflow within the casing and helping the cooling fan remove accumulated hot air. The control module can intelligently and synchronously or in stages activate the liquid cooling system and the air dissipation system based on temperature sensor feedback, optimizing energy consumption and reducing unnecessary fan noise while ensuring effective heat dissipation. The liquid cooling plate serves both as a heat dissipation device and a structural component; the heat exchange interface design allows for efficient collaboration between the air and liquid paths, achieving maximum heat dissipation efficiency within a limited space. This invention effectively controls the internal operating temperature of the power bank, significantly reducing the risk of damage to the battery and electronic components due to overheating, extending the overall lifespan of the power bank, and improving safety. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a novel wireless power bank according to the present invention;

[0026] Figure 2 This is an exploded view of a novel wireless power bank according to the present invention.

[0027] In the attached diagrams above, 1 is the housing; 11 is the air inlet; 12 is the exhaust outlet; 13 is the magnetic base; 2 is the built-in battery module; 3 is the wireless charging module; 4 is the heat dissipation system; 41 is the cooling fan; 42 is the metal heat sink; 5 is the liquid cooling system; 51 is the liquid cooling plate; 52 is the micro-pump; 53 is the auxiliary control board; 6 is the control module; 61 is the main control board; 62 is the display screen; 7 is the power switch; 8 is the contact connector; and 9 is the Type-C interface. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example:

[0035] like Figure 1 and Figure 2 As shown, this invention discloses a novel wireless power bank. Its casing 1 is made of thermally conductive plastic, and an air inlet 11 and an exhaust outlet 12 are located on opposite sides of the upper part of the casing 1. The casing 1 internally houses a built-in battery module 2, a wireless charging module 3, a heat dissipation system 4, a liquid cooling system 5, and a control module 6.

[0036] The built-in battery module 2 is a rechargeable battery pack, and the wireless charging module 3 includes a wireless charging coil. A magnetic base 13 is embedded on the outside of the wireless charging coil for quick alignment and charging with magnetically compatible devices. Furthermore, the wireless charging coil in this device can not only supply power to external devices but also interface with other wireless chargers to achieve reverse charging functionality.

[0037] The liquid cooling system 5 includes two liquid cooling plates 51, which are tightly attached to the two opposite surfaces of the rechargeable battery pack. One of the liquid cooling plates 51 is positioned between the rechargeable battery pack and the wireless charging coil, serving as both a heat dissipation component and a structural isolator, effectively preventing heat transfer between the battery and the coil. A micro-pump 52, preferably a piezoelectric ceramic micro-pump in this embodiment, is mounted on the liquid cooling plate 51 to drive the coolant to circulate within a closed liquid cooling pipe. The flow path of the liquid cooling pipe within the liquid cooling plate 51 is optimized into a meandering shape to ensure that the coolant flows through all heat-prone areas of the battery pack, including the tab area, center area, and edge area, achieving balanced heat dissipation. An auxiliary control board 53 can also be integrated on the liquid cooling plate 51. The micro-pump 52 is electrically connected to the auxiliary control board 53, which communicates with the main control board 61, receiving commands to independently drive the micro-pump 52, thereby improving system response efficiency.

[0038] The heat dissipation system 4 includes a cooling fan 41 and a heat dissipation duct composed of metal heat sinks 42. The cooling fan 41 is located on one side of the air inlet 11 of the housing 1, ensuring sufficient airflow at the air inlet of the cooling fan 41. The air inlet of the cooling fan 41 is connected to the air inlet 11 through a non-linear duct. This non-direct connection design avoids external air from being directly sucked away by the cooling fan 41 after entering the housing 1, but instead promotes the flow and agitation of air inside the housing 1, helping to evenly carry the accumulated hot air to the heat dissipation duct. The exhaust port of the cooling fan 41 is connected to the heat dissipation duct, and the exhaust port 12 of the housing 1 corresponds to the outlet of the heat dissipation duct.

[0039] The main control board 61 of the control module 6 serves as the control core and is electrically connected to the wireless charging coil, rechargeable battery pack, micro-pump 52, and cooling fan 41. The main heat-generating components on the main control board 61 are in close contact with the metal heat sink 42 via thermally conductive material, achieving direct heat dissipation. Simultaneously, a portion of the liquid cooling plate 51 is in thermal contact with the metal heat sink 42, forming a highly efficient heat exchange interface. This allows the heat absorbed by the liquid cooling system to be quickly transferred to the air cooling system and carried away by airflow. Furthermore, when the temperature at the main control board 61 is too high, the liquid cooling module can also distribute the heat. This design achieves efficient synergy between liquid and air cooling, maximizing heat dissipation within a limited space.

[0040] A temperature sensor is connected to the main control board 61 for real-time monitoring of the internal temperature. The surface of the housing 1 has operation buttons and a display screen 62 electrically connected to the main control board 61 for user interaction and status display. The control module 6 is configured to intelligently and synchronously or in stages activate the liquid cooling system 5 and the heat dissipation system 4 when the temperature detected by the temperature sensor reaches a preset threshold. For example, when the temperature reaches the first threshold (e.g., 40°C), the liquid cooling system is activated first; if the temperature continues to rise to the second threshold (e.g., 50°C), the air cooling system is then activated. This step-by-step control strategy optimizes energy consumption and reduces fan noise while ensuring effective heat dissipation. The display screen 62 can display information such as the remaining power of the power bank, current output power, battery temperature, and the operating status of the heat dissipation system in real time. It can also display various patterns in conjunction with a mobile app for convenient and intuitive user understanding.

[0041] In addition, a power switch 7 is connected in series in the power supply circuit between the main control board 61 and the rechargeable battery pack. Its pressing part is exposed on the surface of the housing, providing a physical switch to enhance safety. The surface of the housing 1 is also embedded with a contact connector 8 that is electrically connected to the main control board 61 and a Type-C interface 9, supporting multiple charging and discharging methods and data communication.

[0042] Working Principle Overview: When the power bank is in operation, the heat generated by the internal heat source is first absorbed and transferred by the liquid cooling system through a liquid cooling plate. The liquid cooling system concentrates the heat at the heat exchange interface, while the air cooling system introduces air through a non-linear airflow duct and uses a cooling fan to efficiently expel heat from the heat exchange interface and the heat-generating components on the main control board. The entire heat dissipation process is intelligently controlled by the control module, which dynamically manages the start, stop, and coordination of liquid cooling and air cooling based on temperature changes, ensuring that the internal temperature is always within a safe range. This significantly reduces the risk of thermal damage to the battery and electronic components, extends the device's lifespan, and improves operational safety.

[0043] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel wireless power bank, characterized in that: Includes a housing, the housing having an air inlet and an air outlet, and the housing containing: Built-in battery module, including a rechargeable battery pack; A wireless charging module, including a wireless charging coil; A heat dissipation system includes a cooling fan and a heat dissipation duct composed of metal heat sinks, wherein the exhaust port of the cooling fan is connected to the heat dissipation duct, and the exhaust port of the housing corresponds to the outlet of the heat dissipation duct. The liquid cooling system includes at least one liquid cooling plate that is thermally connected to the rechargeable battery pack, a micro water pump disposed on the liquid cooling plate, and liquid cooling pipes, wherein the micro water pump drives the coolant to circulate within the liquid cooling pipes; The control module includes a main control board, which is electrically connected to the wireless charging coil, the rechargeable battery pack, the micro-pump, and the cooling fan. The main heat-generating components on the main control board are in thermal contact with the metal heat sink; a portion of the liquid cooling plate is in thermal contact with the metal heat sink, forming a heat exchange interface that transfers heat from the liquid cooling system to the heat dissipation duct; the cooling fan is located on one side of the air inlet, and its air inlet is connected to the air inlet through a non-linear air duct.

2. The novel wireless power bank according to claim 1, characterized in that: The liquid cooling plate consists of two pieces, which are respectively attached to the two large surfaces opposite to each other of the rechargeable battery pack, and one of the liquid cooling plates is disposed between the rechargeable battery pack and the wireless charging coil.

3. The novel wireless charging bank according to claim 1, characterized in that: The micro pump is a piezoelectric ceramic micro pump.

4. The novel wireless power bank according to claim 1, characterized in that: An auxiliary control board is also provided on the liquid cooling plate. The micro-pump is electrically connected to the auxiliary control board. The auxiliary control board is communicatively connected to the main control board and receives instructions from the main control board to drive the micro-pump.

5. The novel wireless power bank according to claim 1, characterized in that: The flow path of the liquid cooling pipe within the liquid cooling plate is configured to pass through positions corresponding to the tab region, center region, and edge region of the rechargeable battery pack.

6. The novel wireless charging bank according to claim 1, characterized in that: The housing surface is provided with operation buttons and a display screen that are electrically connected to the main control board. A temperature sensor is connected to the main control board. The control module is configured to synchronously or stepwise start the liquid cooling system and the heat dissipation system when the temperature detected by the temperature sensor reaches a preset threshold.

7. The novel wireless power bank according to claim 1, characterized in that: A power switch is connected in series in the power supply circuit between the main control board and the rechargeable battery pack, and the pressing part of the power switch is exposed on the surface of the housing.

8. The novel wireless power bank according to claim 1, characterized in that: The housing surface is embedded with a contact connector that is electrically connected to the main control board. The contact connector includes at least one power contact and at least one data contact for establishing an external conductive connection to achieve charging / discharging or data communication.

9. The novel wireless power bank according to claim 1, characterized in that: The housing is also provided with a Type-C interface, which is electrically connected to the main control board to realize the charging and discharging management of the rechargeable battery pack.

10. The novel wireless power bank according to claim 1, characterized in that: The housing has a magnetic base embedded in the area corresponding to the wireless charging coil, and the main body of the housing is made of thermally conductive plastic or metal alloy material.

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