Mobile power supply

Abstract

The embodiment of the utility model discloses a mobile power supply, which comprises a shell and a fan, the shell is provided with a first space and a second space, the shell is provided with an air inlet and an air outlet, the air inlet is communicated with the first space, and the air outlet is communicated with the second space; the draught fan is arranged in the shell, an air suction opening of the draught fan communicates with the first space, an air blowing opening of the draught fan communicates with the second space, and the first space communicates with the second space through the draught fan; the fan is arranged in the shell, the partition piece is arranged in the shell, and the shell is divided into the first space and the second space by the fan and the partition piece together. The shell is divided into the first space and the second space which are relatively independent, and the first space and the second space are communicated through the fan, so that the air inlet duct and the air outlet duct of the fan are relatively independent, hot air exhausted by the fan is prevented from flowing to the air inlet as much as possible, and the heat dissipation efficiency of the mobile power supply is improved.

Description

Technical Field

[0001] The present application relates to the field of mobile power supplies, and in particular to a mobile power supply. Background Art

[0002] Power banks are easy to carry and store electrical energy, allowing them to charge electronic devices at any time. However, charging generates heat, which can affect the battery life. To improve the heat dissipation of power banks, fans are often installed within them. These fans speed up air flow, removing heat from the power bank.

[0003] However, due to the unreasonable air duct setting of some mobile power supplies, the air outlet and air inlet of the fan will affect each other, causing hot air backflow, resulting in low heat dissipation efficiency. Utility Model Content

[0004] The embodiments of the present application provide a mobile power supply, which can reduce interference between the air intake and air outlet of a fan, thereby improving the heat dissipation effect of the mobile power supply.

[0005] An embodiment of the present application provides a mobile power supply, which includes a shell and a fan. The shell has a first space and a second space. An air inlet and an air outlet are provided on the shell. The air inlet is connected to the first space, and the air outlet is connected to the second space. The fan is arranged in the shell, the air suction port of the fan is connected to the first space, and the air blowing port of the fan is connected to the second space, and the first space and the second space are connected through the fan.

[0006] Beneficial effect: Since the shell is divided into two relatively independent spaces, the first space and the second space, and the first space and the second space are connected through the fan, the air inlet duct and the air outlet duct of the fan are relatively independent. When the fan rotates, the air outlet and air inlet of the fan basically do not interfere with each other, and the hot air discharged by the fan is avoided as much as possible to flow to the air inlet, thereby improving the heat dissipation efficiency of the mobile power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 This is a schematic structural diagram of a mobile power supply in one embodiment of the present application;

[0009] Figure 2 This is a schematic diagram of the exploded structure of a mobile power supply in one embodiment of the present application;

[0010] Figure 3 This is a schematic diagram of the exploded structure of a mobile power supply in another embodiment of the present application;

[0011] Figure 4 This is a schematic diagram of the exploded structure of a mobile power supply in another embodiment of the present application;

[0012] Figure 5 This is a schematic diagram of the exploded structure of a mobile power supply in another embodiment of the present application;

[0013] Figure 6 This is a partial structural diagram of a mobile power supply in another embodiment of the present application;

[0014] Figure 7 This is a schematic diagram of the exploded structure of a mobile power supply in another embodiment of the present application;

[0015] Figure 8 This is a schematic diagram of the partial structure of a mobile power supply in another embodiment of the present application.

[0016] Explanation of the accompanying drawings: 100, mobile power supply; 110, shell; 110a, air inlet; 110b, air inlet; 111, surface shell; 111a, receiving groove; 112, bottom shell; 113, middle frame; 114, baffle; 120, partition; 121, supporting foot; 130, fan; 130a, air suction port; 130b, air blowing port; 140, battery; 140a, gap; 150, circuit board; 160, coil assembly; 170, support member; AA, thickness direction; BB, airflow direction. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0018] like Figures 1-3 As shown, an embodiment of the present application provides a mobile power supply 100, which can charge electronic devices such as mobile phones, tablet computers, and headphones. The mobile power supply 100 has good portability and is easy to carry.

[0019] like Figure 1 and Figure 2 As shown, the mobile power supply 100 includes a housing 110 and a fan 130 .

[0020] The housing 110 is used to accommodate other components such as the fan 130, and the housing 110 provides a certain degree of protection for the fan 130 and other components. The housing 110 has a first space and a second space, and the first space and the second space are relatively independent. The housing 110 is provided with an air inlet 110a and an air outlet 110b. The air inlet 110a is connected to the first space, and the air outlet 110b is connected to the second space. The air inlet 110a is used for air inflow, and the air outlet 110b is used for air outflow. The material of the housing 110 can be plastic, so it can be injection molded into different shapes. The plastic housing 110 has good insulation and is relatively lightweight. In order to facilitate portability, the shape of the housing 110 can be roughly flat to reduce the thickness of the mobile power supply 100. For example, the shape of the housing 110 is cubic.

[0021] like Figure 3 As shown, fan 130 is disposed within housing 110. The suction port 130a of fan 130 communicates with the first space, and the blowing port 130b of fan 130 communicates with the second space. The first and second spaces are connected via fan 130. The first space serves as the air inlet duct for fan 130, and the second space serves as the air outlet duct for fan 130. When fan 130 rotates, air outside housing 110 enters the first space through air inlet 110a, is then drawn in by the suction port 130a of fan 130, and is discharged into the second space through blowing port 130b of fan 130. The air then flows out of housing 110 through outlet 110b. Fan 130 can be centrifugal, resulting in higher air pressure and better exhaust efficiency. Fan 130 can be 3-10 mm thick, illustratively, to minimize the weight of the power bank while ensuring sufficient heat dissipation.

[0022] In summary, since the shell 110 is divided into two relatively independent spaces, the first space and the second space, and the first space and the second space are connected through the fan 130, the air inlet duct and the air outlet duct of the fan 130 are relatively independent. When the fan 130 rotates, the air outlet and the air inlet of the fan 130 basically do not interfere with each other, and the hot air discharged by the fan 130 is avoided as much as possible from flowing to the air inlet 110a, thereby improving the heat dissipation efficiency of the mobile power supply 100.

[0023] like Figure 3 and Figure 4 As shown, in some embodiments, the mobile power supply 100 further includes a partition 120, which is disposed in the housing 110. It can be understood that the size of the fan 130 is relatively small and is not sufficient to separate the housing 110. Therefore, by providing the partition 120, the fan 130 and the partition 120 jointly separate the housing 110 into a first space and a second space, and the first space and the second space are connected through the fan 130.

[0024] The separator 120 can be plate-shaped, making it thinner and reducing the space occupied by the housing 110. The separator 120 can be connected to the housing 110 by bonding, snapping, screwing, abutting, etc., or the separator 120 and the housing 110 can be integrally formed. Optionally, the separator 120 is provided with support legs 121 for supporting the separator 120 and thereby securing it relative to the housing 110.

[0025] like Figure 4 As shown, in some embodiments, the mobile power supply 100 further includes a battery 140 and a circuit board 150. The battery 140 is disposed within the separator 120 and within the first space. The separator 120 can support the battery 140. The battery 140 is used to store electrical energy and can be a cylindrical lithium battery or a soft-pack lithium battery. When the battery 140 is charging or discharging, it generates heat. If the temperature of the battery 140 is too high, it will negatively affect the lifespan and safety of the battery 140. Therefore, it is necessary to control the temperature of the battery 140.

[0026] It should be noted that the separator 120 has a certain thermal conductivity. When the battery 140 is placed on the separator 120, the separator 120 can transfer some of the heat from the battery 140 to the second space, thereby assisting in heat dissipation from the battery 140. Optionally, the separator 120 can be made of a material with good thermal conductivity, such as metal, so that the battery 140 can transfer some of the heat to the separator 120. The separator 120 then transfers the heat to the second space. The air discharged from the air outlet 130b of the fan 130, after entering the second space, can remove the heat dissipated by the separator 120, thereby dissipating heat from the separator 120 and further improving the heat dissipation efficiency of the mobile power supply 100. It should also be noted that when the battery 140 is a soft-pack battery, the battery 140 can be placed in a close-fitting manner with the separator 120. In this case, the portion of the separator 120 that contacts the battery can have heat dissipation holes, thereby improving the heat dissipation efficiency of the battery 140 without affecting the sealing effect of the separator 120.

[0027] The circuit board 150 is spaced apart from the battery 140 along a direction AA perpendicular to the thickness of the power bank 100, and is located within the first space. The circuit board 150 controls the charging and discharging of the battery 140 and generates heat during operation. Excessive temperature increases the stability of the circuit board 150 and increases the likelihood of damage.

[0028] When the fan 130 rotates, the air outside the shell 110 flows through the first space, thereby taking away the heat emitted by the battery 140 and the circuit board 150 to reduce the temperature of the battery 140 and the circuit board 150, and when the air discharged by the fan 130 flows through the second space, the heat of the partition 120 can be taken away to further reduce the temperature of the battery, thereby improving the service life of the battery 140, making the battery 140 safer in use, and improving the stability of the circuit board 150, that is, improving the service life of the power bank 100 and increasing the safety of the power bank 100.

[0029] As shown in FIG. 1, in some embodiments, the power bank 100 further comprises a coil assembly 160, which can generate an induced magnetic field, so that the power bank 100 can wirelessly charge electronic devices through the coil assembly 160. Of course, the power bank 100 can also charge electronic devices through the USB-A port and the USB-C port, which are not limited herein. Figure 4

[0030] The coil assembly 160 is arranged in the first space, and when the fan 130 rotates, the air outside the shell 110 flows through the first space, which can also take away the heat emitted by the coil assembly 160, thereby reducing the temperature of the coil assembly 160, improving the power during wireless charging, thereby improving the charging speed and shortening the charging time. The fan 130 of the embodiment of the present application can dissipate heat for the battery 140, the circuit board 150 and the coil assembly 160, and can simultaneously consider multiple heat sources, thereby improving the problem of large local heat and high temperature reducing charging power of the power bank 100, and realizing full charging power or prolonging the time of high power output.

[0031] Optionally, along the thickness direction AA of the power bank 100, the coil assembly 160 is arranged spaced apart from the battery 140. Since the thickness of the coil assembly 160 is usually small, arranging the coil assembly 160 along the thickness direction AA of the power bank 100 only needs to slightly increase the thickness of the power bank 100, thereby avoiding increasing the size of the power bank 100 in the width direction or the length direction, minimizing the volume of the power bank 100, and increasing the portability of the power bank 100. Moreover, the coil assembly 160 is arranged spaced apart from the battery 140, which can also improve the heat dissipation effect of the battery 140 and the coil assembly 160, and avoid heat accumulation. For example, the coil assembly 160 can include a coil and a magnetic separation sheet, the coil is arranged on the magnetic separation sheet, the magnetic separation sheet is used to support the coil, and the magnetic separation sheet can reduce magnetic field interference. The distance between the coil assembly 160 and the battery 140 can be 2-8 mm, so as to ensure that there is enough heat dissipation space between the coil assembly 160 and the battery 140, and the power bank is not too thick and heavy.

[0032] As shown in FIG. 1, in some embodiments, the power bank 100 further comprises a coil assembly 160, which can generate an induced magnetic field, so that the power bank 100 can wirelessly charge electronic devices through the coil assembly 160. Of course, the power bank 100 can also charge electronic devices through the USB-A port and the USB-C port, which are not limited herein. Figure 4 ​As shown, in some embodiments, the coil assembly 160 is positioned near the air inlet 110a. The air entering the air inlet 110a has a relatively low temperature due to a short heat exchange time. Positioning the coil assembly 160 near the air inlet 110a allows the relatively cool air to remove heat from the coil assembly 160, thereby improving the heat dissipation effect of the coil assembly 160.

[0033] like Figure 4 As shown, in some embodiments, the air intake 130a of the fan 130 is arranged away from the air inlet 110a, and the air flowing from the air inlet 110a into the air intake 130a of the fan 130 needs to flow through a relatively long distance, so that the air entering from the air inlet 110a can flow through the entire first space as much as possible, increasing the contact time between the air and the battery 140, the circuit board 150 and the coil assembly 160, enhancing the heat exchange between the air and the battery 140, the circuit board 150 and the coil assembly 160, and improving the heat dissipation effect of the battery 140, the circuit board 150 and the coil assembly 160.

[0034] like Figure 5 As shown, in some embodiments, the blowing port 130b of the fan 130 is set toward the partition 120, and the air discharged from the blowing port 130b of the fan 130 is directly blown toward the partition 120, thereby enhancing the heat dissipation effect of the partition 120, so as to further improve the heat dissipation level of the mobile power supply 100.

[0035] like Figure 6 As shown, in some embodiments, the mobile power supply 100 further includes a support member 170, which is disposed between the battery 140 and the coil assembly 160. The support member 170 is used to support the coil assembly 160, so that the battery 140 and the coil assembly 160 are spaced apart, and the battery 140 and the housing 110 are spaced apart. The support member 170 exposes both sides of the coil assembly 160, thereby providing good heat dissipation effect on both sides of the coil assembly 160, thereby improving the heat dissipation effect of the coil assembly 160.

[0036] like Figure 6 As shown, in some embodiments, the support member 170 is strip-shaped, thereby reducing the contact area between the support member 170 and the battery 140, and reducing the contact area between the support member 170 and the coil assembly 160, so that the battery 140 and the coil assembly 160 have a better heat dissipation effect.

[0037] like Figures 6-7 As shown, in some embodiments, the support member 170 has heat dissipation holes, which are arranged through the support member 170 along the thickness direction AA of the mobile power supply 100, thereby reducing the contact area between the support member 170 and the coil assembly 160, so that the battery 140 and the coil assembly 160 have a better heat dissipation effect.

[0038] As shown in Figures 6-7 In some embodiments, the surface of the support 170 abutting the battery 140 is provided with a first groove, and the extension direction of the first groove is parallel or arranged at an acute angle with the airflow direction BB, which is the direction of the air inlet 110a towards the air inlet 130a of the fan 130. By providing the first groove, the contact area of the support 170 and the battery 140 can be reduced, and the airflow can pass through the first groove, so that the battery 140 assembly has a better heat dissipation effect.

[0039] As shown in Figures 6-7 In some embodiments, the surface of the support 170 abutting the coil assembly 160 is provided with a second groove, and the extension direction of the second groove is parallel or arranged at an acute angle with the airflow direction BB. By providing the second groove, the contact area of the support 170 and the coil assembly 160 can be reduced, and the airflow can pass through the second groove, so that the coil assembly 160 has a better heat dissipation effect.

[0040] As shown in Figure 7 In some embodiments, the power bank 100 can further include a magnetic ring 180, which is arranged at the periphery of the coil assembly 160. When the electronic device approaches the power bank 100, the magnetic ring 180 is magnetically attracted to the magnetic attraction member in the electronic device, thereby assisting the alignment of the electronic device and the power bank 100, and relatively fixing the electronic device and the power bank 100, thereby improving the charging efficiency of the power bank.

[0041] As shown in Figure 7 In some embodiments, the air inlet 130a of the fan 130 is arranged at the gap between the circuit board 150 and the battery 140. For example, the circuit board 150 and the battery 140 have a gap 140a therebetween, and when the fan 130 is working, the air sucked by the fan 130 can flow through the battery 140 and the circuit board 150 at the same time, thereby taking away the heat generated by the battery 140 and the circuit board 150. Alternatively, the connection between the circuit board 150 and the shell 110 is sealed, and the connection between the battery 140 and the shell 110 is sealed, so that the air can only enter the air inlet 130a of the fan 130 through the gap 140a, thereby making the gas flow at the gap 140a larger and the heat dissipation effect better.

[0042] As shown in Figure 2 In some embodiments, the shell 110 includes a face shell 111, a bottom shell 112, and a middle frame 113.

[0043] The face shell 111 is usually placed upward, and the coil assembly 160 is arranged close to the face shell 111. When the electronic device is placed on the face shell 111, the coil assembly 160 can be close to the electronic device, so that the electronic device can sense the coil assembly. As shown in Figure 3As shown, a receiving groove 111a can be provided on the surface shell 111, and the receiving groove 111a is used to accommodate the magnetic coil 180, so that the magnetic coil 180 can be closer to the electronic device, thereby improving the magnetic attraction effect between the magnetic coil 180 and the electronic device. In addition, the magnetic coil 180 is provided in the receiving groove 111a, which can also make the mobile power supply 100 thinner.

[0044] The bottom shell 112 is opposite to the top shell 111 and spaced apart from each other. The bottom shell 112 is usually placed downward and contacts the desktop to support the mobile power supply 100 .

[0045] The middle frame 113 connects the face shell 111 and the bottom shell 112. The middle frame 113 and the bottom shell 112 can be provided as one piece, thereby reducing the number of assembly steps and providing a better sealing line between the middle frame 113 and the bottom shell 112. The middle frame 113 and the face shell 111 can be provided separately, so that the shell 110 can be disassembled and assembled, thereby facilitating the assembly of the partition 120, fan 130, battery 140, circuit board 150 and coil assembly 160 in the shell 110 and facilitating maintenance. The face shell 111 and the middle frame 113 can be connected by welding, bonding, or the like. The four corners of the middle frame can be rounded to reduce the probability of scratching other items when carrying the mobile power bank and to enhance the grip feel. The air inlet 110a and the air outlet 110b are both arranged on the middle frame 113. When the mobile power supply 100 is placed in a normal state (the surface shell 111 is placed upward and the bottom shell 112 is placed downward), when the electronic device is placed against the surface shell 111, the electronic device will not block the air inlet 110a and the air outlet 110b.

[0046] In some embodiments, the air outlet 110b and the air inlet 110a are respectively arranged on different surfaces of the middle frame 113, that is, the air outlet 110b and the air inlet 110a face different directions, thereby minimizing the risk of hot air from the air outlet 110b entering the air inlet 110a.

[0047] Optionally, the air outlet 110b includes a first air outlet and a second air outlet arranged back to back, and the first air outlet, the second air outlet and the air inlet 110a are respectively arranged on different surfaces of the middle frame 113, so that the fan 130 can exhaust air to both sides, making the temperature of the partition more uniform, and even making the temperature of the battery 140 more uniform. Moreover, by setting two air outlets, the exhaust resistance of the fan 130 is smaller, and the probability of the air outlet being blocked is lower.

[0048] Optionally, the air outlet 110b is arranged back to back with the air inlet 110a so that the air outlet 110b is far away from the air inlet 110a, and the air outlet and air inlet directions are the same, so the air outlet has little effect on the air inlet, thereby minimizing the hot air from the air outlet 110b from entering the air inlet 110a.

[0049] like Figure 8As shown, in some embodiments, the housing 110 further includes a baffle 114 disposed on the middle frame 113. The baffle 114 is disposed corresponding to the air outlet 130b of the fan 130 and is used to fill the gap 140a between the middle frame 113 and the fan 130. The baffle 114 can improve the sealing between the fan 130 and the middle frame 113. The baffle 114, the middle frame 113, the bottom shell 112, and the partition 120 enclose an exhaust channel for the fan 130, thereby making the exhaust of the fan 130 smoother, preventing the exhaust of the fan 130 from flowing between the gap between the fan and the housing, and reducing the generation of turbulence.

[0050] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A mobile power supply, characterized in that: include: A housing having a first space and a second space, wherein an air inlet and an air outlet are formed on the housing, wherein the air inlet is connected to the first space, and the air outlet is connected to the second space; a fan disposed in the housing, wherein an air suction port of the fan is in communication with the first space, an air blowing port of the fan is in communication with the second space, and the first space and the second space are in communication through the fan; A partition is provided in the shell, and the fan and the partition jointly divide the shell into the first space and the second space.

2. The mobile power supply according to claim 1, characterized in that: The mobile power supply further includes: a battery, disposed in the partition and located in the first space; The circuit board is spaced apart from the battery in a direction perpendicular to the thickness of the mobile power supply and is located in the first space.

3. The mobile power supply according to claim 2, characterized in that: The gap between the circuit board and the battery is arranged corresponding to the air suction port of the fan.

4. The mobile power supply according to claim 2, characterized in that: The mobile power supply further comprises: a coil assembly, disposed in the first space; The support member is arranged between the battery and the coil assembly. Along the thickness direction of the mobile power supply, the coil assembly, the housing and the battery are all spaced apart.

5. The mobile power supply according to claim 4, characterized in that: The coil assembly is arranged close to the air inlet; and / or The air suction port of the fan is arranged away from the air inlet; and / or The air outlet of the fan is arranged toward the partition.

6. The mobile power supply according to claim 4, characterized in that: The support member is strip-shaped; and / or The support member has a heat dissipation hole, and the heat dissipation hole is arranged through the support member along the thickness direction of the mobile power supply; and / or A first groove is provided on the surface of the support member abutting against the battery, wherein the extension direction of the first groove is parallel to or arranged at an acute angle to the airflow direction, and the airflow direction is the direction from the air inlet to the air suction port of the fan; and / or A second groove is provided on the surface of the support member abutting against the coil assembly. The extension direction of the second groove is parallel to the airflow direction or is arranged at an acute angle.

7. The mobile power supply according to claim 1, characterized in that: The housing comprises: Noodle shell; a bottom shell, opposite to and spaced from the surface shell; The middle frame connects the surface shell and the bottom shell, and the air inlet and the air outlet are both arranged on the middle frame.

8. The mobile power supply according to claim 7, characterized in that: The air outlet and the air inlet are respectively arranged on different surfaces of the middle frame.

9. The mobile power supply according to claim 7, characterized in that: The air outlet comprises a first air outlet and a second air outlet disposed opposite to each other, and the first air outlet, the second air outlet and the air inlet are respectively disposed on different surfaces of the middle frame; or The air outlet is arranged opposite to the air inlet.

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