CN212572118U

CN212572118U - Dilatation structure of portable power source

Info

Publication number: CN212572118U
Application number: CN202021129124.7U
Authority: CN
Inventors: 王雷; 吴英荣
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-02-19
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a portable power source's dilatation structure, include: main part, base and dilatation module. The main body includes: a support and a control circuit; the bracket is provided with an accommodating cavity for accommodating the main battery and the control circuit; the bracket is provided with a plurality of connecting holes which are vertically arranged downwards; the connecting hole is provided with an internal thread; the base includes: a bottom plate and a connecting rod; the top end of the connecting rod is provided with an external thread; the dilatation module includes: the fixing frame is used for installing the expansion battery and the second metal terminal; the fixed frame is parallelly and detachably arranged between the bracket and the base; the fixing frame is provided with a position avoiding hole for the connecting rod to pass through; the second metal terminal is arranged upwards and is butted with the first metal terminal so as to realize the parallel connection between the main battery and the expansion battery through the control circuit. Above-mentioned portable power source adopts the design of detachable dilatation module for the user can adjust portable power source's structure according to the demand to output function rate, thereby changes battery capacity.

Description

Dilatation structure of portable power source

Technical Field

The utility model relates to a power design technical field especially relates to a portable power source's dilatation structure.

Background

The portable Power source (english name: Power Bank, commonly known as charge pal) is a portable electric energy storage tool, and can provide electric energy for various mobile electronic devices, such as mobile phones, tablet computers, notebook computers, digital cameras, and mobile workstations. Generally, a mobile power supply includes: the device comprises a storage battery for storing electric energy and a control circuit connected with the storage battery, wherein the control circuit is provided with a regulating unit, a voltage stabilizing unit, a charging unit and the like. The adjusting unit is used for adjusting the voltage, the current, the power and the like output by the mobile power supply. The voltage stabilizing unit is used for stabilizing the output of the mobile power supply. The charging unit is used for connecting an external power supply to charge the storage battery, so that the mobile power supply can be used repeatedly.

The capacity of the storage battery in most mobile power supplies is limited, which means that the output power of the mobile power supply has an upper limit value, and when the output power demand of the electronic device for the mobile power supply increases, the mobile power supply with larger battery capacity can be replaced generally. For example, for devices requiring low power, such as mobile phones, tablet computers, digital cameras, etc., a mobile power supply with low battery capacity can be selected for charging, while for notebook computers and mobile workstations, a mobile power supply with high battery capacity needs to be replaced for charging, and the mobile power supply with high battery capacity inevitably causes the occupied space to be enlarged, which is not favorable for carrying. Therefore, the current mobile power supply has the following defects: the user cannot structurally adjust the mobile power supply to change the battery capacity according to the demand for the output functional rate.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a portable power source's dilatation structure adopts the design of detachable dilatation module for the user can adjust portable power source's structure according to the demand to the output function rate, thereby changes battery capacity.

An expansion structure of a mobile power supply comprises:

a main body; the main body includes: the main battery control system comprises a bracket for mounting the main battery and a control circuit electrically connected with the main battery; the bracket is provided with an accommodating cavity for accommodating the main battery and the control circuit; the outer side of the bracket is provided with a charging port and a discharging port which are respectively and electrically connected with the control circuit; the bottom of the bracket is provided with a first metal terminal which is arranged downwards and is electrically connected with the control circuit; the bracket is provided with a plurality of connecting holes which are vertically arranged downwards; the connecting hole is provided with an internal thread;

a base detachably connected to the main body; the base includes: a bottom plate arranged at the bottom of the bracket in parallel and a connecting rod arranged on the bottom plate in a penetrating way; the shape of the top of the bottom plate matches the shape of the bottom of the bracket; the top end of the connecting rod is provided with an external thread matched with the internal thread; the top end of the connecting rod vertically penetrates through the bottom plate from the bottom of the bottom plate upwards and then is inserted into the connecting hole, and threaded connection is realized; and

the expansion module is detachably connected between the main body and the base; the dilatation module includes: the second metal terminal is used for connecting the expansion battery; the shape of the top of the fixing frame is matched with the shape of the bottom of the bracket; the shape of the bottom of the fixing frame is matched with the shape of the top of the base; the fixed frame is parallelly and detachably arranged between the bracket and the base; the fixing frame is provided with a position avoiding hole for the connecting rod to pass through; the second metal terminal is arranged upwards and is butted with the first metal terminal so as to realize the parallel connection between the main battery and the expansion battery through the control circuit.

The expansion structure of the mobile power supply comprises a main body, a base and an expansion module, wherein the main body, the base and the expansion module can form the mobile power supply with the variable battery capacity after a battery is installed. The main body is used as a main power supply after being installed with a main battery, and is provided with a charging port and a discharging port. When the user needs low battery capacity, through rotatory connecting rod so that connecting rod and the connecting hole separation in the main part, then will install the dilatation module of dilatation battery and take off between main part and the base, then from up installing the connecting rod again to the connecting hole down again to abandon the dilatation module in order to reduce battery capacity, and reduce portable power source's occupation space on the whole. When the user needs high battery capacity, through rotatory connecting rod so that connecting rod and the connecting hole separation in the main part, then place the dilatation module between main part and base, then with the connecting rod from down upwards penetrate bottom plate and mount with this again and install the connecting hole to let second metal terminal and first metal terminal butt joint, make main battery and dilatation battery realize parallelly connected, thereby increase portable power source's battery capacity. Through the design, the design of the detachable capacity expansion module is adopted, so that a user can adjust the structure of the mobile power supply according to the requirement on the output function rate, and the battery capacity is changed.

In one embodiment, a handle is provided at the top of the stand. The handle convenience of customers can carry and transport portable power source through the mode that grips, improves the convenience in use.

In one embodiment, the charging port comprises: the vehicle-mounted solar charging system comprises one or more of a mains supply charging interface, a vehicle-mounted charging interface and a solar charging interface. The charging port is various in types and can be matched with various different power supplies to charge the mobile power supply.

In one embodiment, the discharge port includes: the power supply device comprises one or more of a mains supply discharge interface, a USB discharge interface and a vehicle-mounted discharge interface. The discharge port has various types and can be matched with various electronic devices to realize the discharge function.

In one embodiment, the outside of the bracket is provided with a turnover cover to shield the charging port and/or the discharging port. The charging port and/or the discharging port can be shielded through the flip cover, so that the protection effect is achieved, and the attractiveness is improved.

In one embodiment, the outer side of the bracket is provided with a touch screen electrically connected with the control circuit. The touch screen may provide display functionality and may be operable by a user.

In one embodiment, the body further comprises: and a cooling fan mounted on the bracket. Cooling fan can cool down the main part, reduces portable power source because of overheated safety risk that arouses and the stability that improves the operation.

In one embodiment, the bracket is provided with a flow guide cover connected with the cooling fan and a flow dividing air pipe connected with the flow guide cover; the connecting rod is of a hollow tubular structure, and the outer side of the connecting rod is provided with an exhaust hole; the branch air pipe is communicated with the accommodating cavity to guide the airflow generated by the cooling fan to the accommodating cavity, and the branch air pipe passes through the connecting hole to be communicated with the connecting rod and guides the airflow to the fixed frame and the base through the exhaust hole. Utilize kuppe, reposition of redundant personnel trachea and the connecting rod that the hollow tubular structure set up, shunt the produced air current of cooling fan in order to cool off each region of portable power source.

In one embodiment, the main body is also provided with a first heat dissipation plate attached to the main battery; the expansion module is also provided with a second heat dissipation plate attached to the expansion battery. The first heat dissipation plate can improve the heat dissipation efficiency of the main battery. The second heat dissipation plate can improve the heat dissipation efficiency of the expansion battery.

In one embodiment, the number of the expansion modules is multiple and the expansion modules are arranged between the main body and the base in a parallel stacking manner. The user can select one or more expansion modules to be assembled between the main body and the base according to the requirement on the capacity of the battery.

Drawings

Fig. 1 is a schematic view of an expansion structure of a mobile power supply according to an embodiment of the present invention;

fig. 2 is a view from another perspective of the expansion structure of the portable power source shown in fig. 1;

fig. 3 is a view of another view of the expansion structure of the portable power source shown in fig. 1;

fig. 4 is an exploded view of the expansion structure of the portable power source shown in fig. 1;

fig. 5 is a schematic diagram of a main body in an expansion structure of the mobile power supply shown in fig. 1;

FIG. 6 is a partial view of the body shown in FIG. 5;

FIG. 7 is a partial view from another perspective of the body shown in FIG. 6;

fig. 8 is a schematic view of a base in the expansion structure of the mobile power supply shown in fig. 1;

FIG. 9 is a schematic diagram of the expansion module shown in FIG. 1;

FIG. 10 is a schematic view of another perspective of the flash module of FIG. 9;

fig. 11 is a schematic diagram of another state of the expansion structure of the portable power source shown in fig. 1.

The meaning of the reference symbols in the drawings is:

100-capacity expansion structure of mobile power supply;

10-main body, 11-bracket, 111-first metal terminal, 112-connecting hole, 1131-mains supply charging interface, 1132-vehicle charging interface, 1133-solar charging interface, 1141-mains supply discharging interface, 1142-USB discharging interface, 1143-vehicle discharging interface, 115-flip cover, 116-touch screen, 117-handle, 12-main battery, 13-control circuit, 14-cooling fan and 15-first cooling plate;

20-base, 21-bottom plate, 22-connecting rod, 221-hexagonal inner hole;

30-expansion module, 31-fixing frame, 311-avoiding hole, 32-expansion battery, 33-second metal terminal, 34-second heat dissipation plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 to fig. 11, an expansion structure 100 of a mobile power supply according to an embodiment of the present invention is shown.

As shown in fig. 1 to 4, the capacity expansion structure 100 of the mobile power supply includes: the flash memory device includes a main body 10, a base 20 connected to the main body 10, and a flash module 30 detachably connected between the main body 10 and the base 20. In which the main body 10 serves as a main electric energy storage structure after being mounted with the main battery 13, and serves as a carrier for implementing control, charging and discharging functions. The base 20 is detachably connected with the main body 10. The expansion module 30 is used as an optional additional electrical energy storage structure after installation of the expansion battery 32. As shown in fig. 11, after the main battery 12 is installed on the main body 10, the base 20 and the main body 10 may form a complete portable power source, and as shown in fig. 1, after the main battery 12 and the expansion module 30 are installed on the main body 10, the expansion module 30 may be additionally installed between the base 20 and the main body 10 to form a portable power source with a larger battery capacity.

Next, the expansion structure 100 of the mobile power supply will be further described with reference to fig. 5 to 10 on the basis of fig. 1 to 4.

As shown in fig. 5 to 7, the main body 10 includes: a bracket 11 for mounting the main battery 12, and a control circuit 13 electrically connected to the main battery 12. As shown in fig. 6 and 7, the bracket 11 is provided with a receiving cavity to receive the main battery 12 and the control circuit 13. As shown in fig. 5, the bottom of the bracket 11 is provided with a first metal terminal 111 disposed downward and electrically connected to the control circuit 13. The bracket 11 is provided with a plurality of coupling holes 112 disposed vertically downward, and the coupling holes 112 are provided with internal threads. For example, in the present embodiment, the holder 11 has a cubic shape as a whole, and one connection hole 112 is provided at each of four corners thereof.

In the present embodiment, the outside of the cradle 11 is provided with a charging port and a discharging port that are electrically connected to the control circuit 13, respectively. The types and the number of the charging ports and the discharging ports can be set according to the requirements of users.

For example, as shown in fig. 1 to 2, in the present embodiment, the charging port includes: commercial power interface 1131, on-vehicle interface 1132 that charges, and solar charging interface 1133. The charging port is various in types and can be matched with various different power supplies to charge the mobile power supply.

For example, as shown in fig. 1 to 2, in the present embodiment, the discharge port includes: a commercial power discharge interface 1141, a USB discharge interface 1142, and a vehicle-mounted discharge interface 1143. The discharge port has various types and can be matched with various electronic equipment to realize the discharge function.

Further, considering that the charging port and the discharging port are exposed to the outside of the cradle 11, they are easily corroded by liquid or dust in a non-use state, and therefore, a corresponding protection structure may be provided. For example, as shown in fig. 1, in the present embodiment, the outer side of the cradle 11 is provided with a flip cover 115 that can be turned over to shield the charging port and/or the discharging port. The charging port and/or the discharging port can be shielded by the flip cover 115, so that the charging port and/or the discharging port can be protected, and the appearance can be improved.

In addition, for convenience of use, as shown in fig. 1, in the present embodiment, a touch panel 116 electrically connected to the control circuit 13 is provided on the outer side of the stand 11. The touch screen 116 may provide display functionality and may be operable by a user.

In addition, considering that heat is generated during the operation of the main battery 12 and the control circuit 13 board, which causes the temperature of the device to rise, a corresponding heat dissipation and cooling structure may be provided.

For example, as shown in fig. 6 and 7, in the present embodiment, the main body 10 may further include: and a cooling fan 14 mounted on the bracket 11. The cooling fan 14 may cool the main body 10, thereby reducing the safety risk of the portable power source 100 due to overheating and improving the operation stability.

Further, in some embodiments, a filter screen may be disposed on the cooling fan 14 for reducing the amount of dust entering into the main body 10, and the filter screen may be disposed at the air inlet and/or the air outlet of the cooling fan 14.

In other embodiments, a water cooling circulation structure may be provided to cool the main body 10.

For example, as shown in fig. 5, in the present embodiment, the main body 10 is further provided with the first heat sink 15 attached to the main battery 12, and the heat dissipation efficiency of the main battery 12 can be improved by the first heat sink 15. Further, in this embodiment, the first heat sink 15 is an aluminum plate provided with uniformly distributed heat dissipation holes.

In addition, as shown in fig. 1, in the present embodiment, a handle 117 is provided on the top of the bracket 11. Handle 117 convenience of customers can carry and transport portable power source through the mode of gripping, improves the convenience of use. Further, in this embodiment, the handle 117 is i-shaped, and each end of the handle 117 is connected to each corner of the bracket 11. In order to improve the comfort level of the handle 117, a soft rubber sleeve can be sleeved outside the handle 117, or the handle 117 is made of a flexible rubber material with toughness.

As shown in fig. 8, the base 20 includes: a bottom plate 21 arranged at the bottom of the bracket 11 in parallel and a connecting rod 22 arranged on the bottom plate 21 in a penetrating way. The shape of the top of the bottom plate 21 matches the shape of the bottom of the holder 11. The top end of the connecting rod 22 is provided with an external thread matching the internal thread. The top end of the connecting rod 22 is inserted into the connecting hole 112 after vertically passing through the bottom plate 21 from the bottom of the bottom plate 21 upward and is screw-coupled. It should be noted that the length of the connecting rod 22 is smaller than the depth of the connecting hole 112.

In this embodiment, as shown in fig. 3, a hexagonal inner hole 221 is formed at the bottom end of the connecting rod 22, which is used for abutting against a hexagonal wrench, and in other embodiments, a cross-shaped inner hole, a straight-line-shaped inner hole, a triangular inner hole, etc. may be formed.

As shown in fig. 9 and 10, the capacity expansion module 30 includes: a fixed frame 31 for installing the expansion battery 32 and a second metal terminal 33 for connecting the expansion battery 32. Wherein the shape of the top of the holder 31 matches the shape of the bottom of the holder 11. The shape of the bottom of the holder 31 matches the shape of the top of the base 20. The fixing frame 31 is parallelly and detachably installed between the bracket 11 and the base 20. The fixing frame 31 is provided with a clearance hole 311 for the connecting rod 22 to pass through. The second metal terminal 33 is disposed upward and abuts the first metal terminal 111 to achieve parallel connection between the main battery 12 and the capacity expansion battery 32 through the control circuit 13.

It should be noted that the specific structural arrangement of the first metal terminal 111 and the second metal terminal 33 can be varied as long as the functional requirement for realizing the electrical connection is satisfied. For example, in the present embodiment, as shown in fig. 5, the first metal terminal 111 is a downward metal insert, and as shown in fig. 9, the second metal terminal 33 is an upward metal interface.

As shown in fig. 10, in the present embodiment, the expansion module 30 is further provided with a second heat sink 34 attached to the expansion battery 32. The heat dissipation efficiency of the expanded battery 32 can be improved by using the second heat dissipation plate 34. Further, in the present embodiment, the second heat dissipation plate 34 is an aluminum plate provided with uniformly distributed heat dissipation holes.

In this embodiment, the number of the expansion modules 30 is one, and in other embodiments, the number of the expansion modules 30 may also be multiple and disposed between the main body 10 and the base 20 in a parallel stacking manner. The user may select one or more expansion modules 30 to be assembled between the main body 10 and the base 20 according to the demand for the battery capacity.

In order to cool each region of mobile power supply 100, cooling fan 14 may be provided in main body 10, and an improvement may be made. For example, in other embodiments, the support 11 is provided with a pod to which the cooling fan 14 is connected and a diverging air duct to which the pod is connected. The connecting rod 22 is a hollow tubular structure and has an exhaust hole on the outer side. The branch air duct communicates with the receiving chamber to guide the air flow generated by the cooling fan 14 to the receiving chamber, and passes through the connection hole 112 to communicate with the connection rod 22 and guide the air flow to the fixing frame 31 and the base 20 via the exhaust hole. The airflow generated by the cooling fan 14 is divided by the air guide sleeve, the divided air pipe and the connecting rod 22 arranged in the hollow tubular structure to cool each area of the mobile power supply 100.

In addition, in some embodiments, an insulating first cushion may be provided between the bracket 11 and the main battery 12, thereby enhancing the shock resistance of the main body 10 and protecting the main battery 12. And an insulating second buffer cushion can be arranged between the fixed frame 31 and the expansion battery 32, so that the impact resistance of the expansion module 30 is enhanced, and the expansion battery 32 is protected.

The expansion structure 100 of the portable power source, the main body 10, the base 20, and the expansion module 30 constitute the portable power source with a variable battery capacity after the battery is installed. The main body 10 is used as a main power supply after being mounted on the main battery 13, and is provided with a charging port and a discharging port. As shown in fig. 11, when a user needs a low battery capacity, the connection rod 22 is rotated to separate the connection rod 22 from the connection hole 112 of the main body 10, the expansion module 30 with the expansion battery 32 mounted thereon is removed from between the main body 10 and the base 20, and the connection rod 22 is then mounted again to the connection hole 112 from bottom to top, so that the expansion module 30 is discarded to reduce the battery capacity and reduce the occupied space of the mobile power supply as a whole. As shown in fig. 1, when a user needs a high battery capacity, the connection rod 22 is rotated to separate the connection rod 22 from the connection hole 112 on the main body 10, then the expansion module 30 is placed between the main body 10 and the base 20, then the connection rod 22 is penetrated into the bottom plate 21 and the fixing frame 31 from bottom to top and then is mounted to the connection hole 112, and the second metal terminal 33 is butted with the first metal terminal 111, so that the main battery 12 and the expansion battery 32 are connected in parallel, thereby increasing the battery capacity of the mobile power supply. Through the design, the design of the detachable capacity expansion module 30 is adopted, so that a user can adjust the structure of the mobile power supply according to the requirement on the output function rate, and the battery capacity is changed.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a portable power source's dilatation structure which characterized in that includes:

a main body; the main body includes: the main battery mounting device comprises a bracket for mounting a main battery and a control circuit electrically connected with the main battery; the bracket is provided with an accommodating cavity for accommodating the main battery and the control circuit; a charging port and a discharging port which are respectively and electrically connected with the control circuit are arranged on the outer side of the bracket; the bottom of the bracket is provided with a first metal terminal which is arranged downwards and is electrically connected with the control circuit; the bracket is provided with a plurality of connecting holes which are vertically arranged downwards; the connecting hole is provided with an internal thread;

a base detachably connected to the main body; the base includes: the bottom plate is arranged at the bottom of the bracket in parallel, and the connecting rod penetrates through the bottom plate; the shape of the top of the bottom plate matches the shape of the bottom of the bracket; the top end of the connecting rod is provided with an external thread matched with the internal thread; the top end of the connecting rod penetrates through the bottom plate from the bottom of the bottom plate vertically upwards and then is inserted into the connecting hole, and threaded connection is realized; and

the expansion module is detachably connected between the main body and the base; the dilatation module includes: the second metal terminal is used for connecting the capacity expansion battery; the shape of the top of the fixing frame is matched with the shape of the bottom of the bracket; the shape of the bottom of the fixing frame is matched with the shape of the top of the base; the fixed frame is parallelly and detachably arranged between the bracket and the base; the fixed frame is provided with a position avoiding hole for the connecting rod to pass through; the second metal terminal is arranged upward and is butted with the first metal terminal so as to realize the parallel connection between the main battery and the expansion battery through the control circuit.

2. The capacity expansion structure of the mobile power supply of claim 1, wherein a handle is arranged at the top of the bracket.

3. The expansion structure of the mobile power supply of claim 1, wherein the charging port comprises: the vehicle-mounted solar charging system comprises one or more of a mains supply charging interface, a vehicle-mounted charging interface and a solar charging interface.

4. The capacity expansion structure of a mobile power supply according to claim 1, wherein the discharge port includes: the power supply device comprises one or more of a mains supply discharge interface, a USB discharge interface and a vehicle-mounted discharge interface.

5. The expansion structure of the mobile power supply according to claim 1, wherein a flip cover is provided on an outer side of the bracket to cover the charging port and/or the discharging port.

6. The capacity expansion structure of the mobile power supply according to claim 1, wherein a touch screen electrically connected to the control circuit is disposed outside the bracket.

7. The power expansion structure of claim 1, wherein the main body further comprises: a cooling fan mounted on the bracket.

8. The expansion structure of the mobile power supply of claim 7, wherein the bracket is provided with a diversion cover connected with the cooling fan and a diversion air pipe connected with the diversion cover; the connecting rod is of a hollow tubular structure, and the outer side of the connecting rod is provided with an exhaust hole; the branch air pipe is communicated with the accommodating cavity to guide the airflow generated by the cooling fan to the accommodating cavity, and the branch air pipe passes through the connecting hole to be communicated with the connecting rod and guides the airflow to the fixed frame and the base through the exhaust hole.

9. The capacity expansion structure of the mobile power supply according to claim 1, wherein the main body is further provided with a first heat dissipation plate attached to the main battery; the expansion module is also provided with a second heat dissipation plate attached to the expansion battery.

10. The portable power source expansion structure according to any one of claims 1 to 9, wherein the expansion module is provided in a plurality and disposed between the main body and the base in a parallel stacking manner.