Multi-purpose mobile power supply and assembly of multi-purpose mobile power supply and electric tool

A multi-purpose mobile power supply includes a first discharge interface configured for powering a computer, communication and consumer electronic product; a second discharge interface configured for powering an electric tool; and an assembly of the mobile power supply and the electric tool. The electric tool includes: an motor; a mounting portion configured for a freely assembling and disassembling connection with the multi-purpose mobile power supply; a power supply terminal provided on the mounting portion and electrically connected to the motor, where the power supply terminal is configured for being combined with the second discharge interface; a latch arranged on the mounting portion, where the multi-purpose mobile power supply is provided with a latch groove corresponding to the latch, and the latch is fitted in the latch groove in a latching connection.

TECHNICAL FIELD

The present invention relates to a multi-purpose mobile power supply, and an assembly based on the multi-purpose mobile power supply and an electric tool.

BACKGROUND

The mobile power supply is composed of multiple batteries with high energy density and has a high overall capacity. Specifically, a charge interface and one or more discharge interfaces are arranged on a housing, which can be configured for repeated charging and discharging. The charge interface can be connected to a power socket through a USB data cable and a common charging stand to charge the mobile power supply. The discharge interface can be connected to a portable electronic device through the USB data cable for power supply. Through the USB data cable of different interface forms, the mobile power supply realizes charging various portable electronic devices. Moreover, a lightweight shape and a portable feature make the mobile power supply be used frequently in daily lives. However, the charge and discharge interfaces and functions of the prior mobile power supply are relatively single, and most of them are only configured for powering computer, communication and consumer (3C) electronic products.

SUMMARY

An objective of the present invention is to provide a multi-purpose mobile power supply that guarantees the powering safety.

The present invention provides a multi-purpose mobile power supply, including:

a first discharge interface configured for powering a 3C electronic product; and

a second discharge interface configured for powering an electric tool.

When the second discharge interface is installed and connected to a corresponding interface of the electric tool, the first discharge interface is at least partially covered by the electric tool.

Further, the first discharge interface and the second discharge interface are arranged on the same surface of the multi-purpose mobile power supply.

Further, the first discharge interface is arranged on a first side surface of the mobile power supply, and the second discharge interface is arranged on a second side surface adjacent to the first side surface.

The electric tool is configured with a mounting portion corresponding to the second discharge interface, and the mounting portion is correspondingly provided with a connecting surface opposite to the second discharge interface, and a mounting side surface configured for at least partially covering the first discharge interface.

Further, there is no significant height difference on any surface of the mobile power supply.

The advantages of the present invention are as follows.

The mobile power supply is configured for powering the 3C electronic products, and can be configured for powering the electric tools. Since powering the electric tools is generally in a complex environment, such as powering electric chain saws, where users should avoid using the mobile power supply for simultaneously powering the electric tools and the 3C electronic products, especially mobile phone and other communication equipment, which are often connected by data cables during powering. In this case, it is liable to cause operation accidents and cause unsafe use of the mobile power supply. Therefore, when the second discharge interface is installed and connected to the corresponding interface of the electric tool, the first discharge interface is at least partially covered by the electric tool, so that the first discharge interface for powering the 3C electronic products cannot be used normally, which effectively eliminates the operation situation of simultaneously powering the electric tools and the 3C electronic products by the mobile power supply, ensuring the safety of users.

Another objective of the present invention is to provide a multi-purpose mobile power supply that is easy to operate and use.

The present invention provides a multi-purpose mobile power supply, including a bottom surface, a top surface, two opposite first side surfaces extending along a length direction of the mobile power supply, and two opposite second side surfaces extending along a width direction, further including:

a first discharge interface configured for powering a 3C electronic product; and

a second discharge interface arranged on any one of the second side surfaces.

The second discharge interface at least includes a first terminal, and the first terminal is configured for press-fitting with a corresponding terminal of an electric tool along the length direction.

Further, the mobile power supply is configured for a direct assembling and disassembling connection with the electric tool, and at least one surface of the mobile power supply is in a latching connection with a corresponding surface of the electric tool.

Further, a surface of the mobile power supply adapted to the electric tool for the latching connection is as basically flat as a surface of a housing body of the mobile power supply.

The advantages of the present invention are as follows.

The mobile power supply can meet powering the 3C products, and adapt to the electric tools for powering, and the structure layout is reasonable. When the users operate and use, the users can hold the mobile power supply in the width direction and insert it along the length direction. Since the distance of the width direction is short, the users can conveniently hold, use and operate.

Another objective of the present invention is to provide a multi-purpose mobile power supply that can be adapted to the use of the electric tools, has a simple structure, and is convenient to carry.

The present invention provides a multi-purpose mobile power supply, including:

a first discharge interface configured for powering a 3C electronic product;

a second discharge interface configured for powering an electric tool; and

at least one latch groove arranged on a surface of a housing body of the mobile power supply and configured for a latching connection with the electric tool.

The surface of the housing body where the latch groove is arranged or a surface adjacent thereto has no protrusion.

The advantages of the present invention are as follows.

The mobile power supply can meet powering the 3C products, and adapt to the electric tools for powering, and the structure layout is reasonable. When the surface of the housing body of the mobile power supply is arranged with the latch groove, the traditional battery pack used in matching electric tools generally has the protuberant latch, and the unlocking mechanism linked with the latch for user operation, causing the battery pack to have a complex structure layout and a large structure size, and be inconvenient to carry and use as a mobile power supply. Therefore, in the mobile power supply provided by the present invention, a conventional latch is set as a latch groove, and the traditional unlocking mechanism is omitted, so that the surface of the housing body where the latch groove is arranged or the surface adjacent thereto has no protrusion.

Another objective of the present invention is to provide a multi-purpose mobile power supply that has the bidirectional charging and discharging function, and directly adapts to the electric tools for powering.

The present invention provides a multi-purpose mobile power supply, including:

a bidirectional charging and discharging interface, where the bidirectional charging and discharging interface is configured for charging or discharging the 3C electronic product, and is connected to a built-in bidirectional charging and discharging circuit of the mobile power supply; and

a second discharge interface, where the second discharge interface is configured for powering an electric tool, and includes a first terminal, and the first terminal is configured for press-fitting with a corresponding terminal of the electric tool.

When the first terminal is press-fitted with the corresponding terminal of the electric tool, a surface of the mobile power supply is in contact with the electric tool, and at least one surface is in a latching connection with the corresponding surface of the electric tool.

Further, the bidirectional charging and discharging interface is configured for automatically recognizing whether the external device is a charging power supply or a device that needs to be charged, and automatically switching a charging or discharging state.

The advantages of the present invention are as follows.

On one hand, the mobile power supply is equipped with a bidirectional charging and discharging interface, which is configured to supply power to the 3C electronic products, and can charge itself through the 3C electronic products to facilitate the use of the mobile power supply. On the other hand, it is equipped with the discharge interface adapted to the electric tools. Through the discharge interface, powering the electric tools can be met, which overcomes the phenomenon that the charging and discharging interface and the function of the traditional mobile power supply are single, and the mobile power supply can also be in a direct latching connection with the electric tools to directly meet powering the electric tool, and make the operation and use be simple and convenient. Therefore, the mobile power supply connects the powering of the electric tools with the powering of the 3C electronic products, achieving the powering in two different fields across borders.

In addition, the present invention further provides an assembly of a multi-purpose mobile power supply and an electric tool, including:

the multi-purpose mobile power supply as described above; and

the electric tool, including:

a motor;

a mounting portion configured for a freely assembling and disassembling connection with the multi-purpose mobile power supply;

a power supply terminal, where the power supply terminal is arranged on the mounting portion and is electrically connected to the motor, and the power supply terminal is configured for being combined with the second discharge interface;

a latch arranged on the mounting portion, where the multi-purpose mobile power supply is provided with a latch groove corresponding to the latch, and the latch is fitted in the latch groove in a latching connection; and

at least one unlocking mechanism configured to manually disengage the latch from the latch groove.

Compared with the prior art, the assembly of the multi-purpose mobile power supply and the electric tool has all the advantages of the above-mentioned multi-purpose mobile power supply, and will not be illustrated in detail.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings. The described embodiments are part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work shall fall within the protection scope of the present invention.

Referring toFIG.1,FIG.2andFIG.3, the multi-purpose mobile power supply100includes: the first discharge interface10configured for powering a 3C electronic product; and the second discharge interface20configured for powering an electric tool.

When the second discharge interface20is installed and connected to the corresponding interface of the electric tool200, the first discharge interface is at least partially covered by the electric tool200.

The multi-purpose mobile power supply is configured for powering the 3C electronic products, and can be configured for powering the electric tools. Since powering the electric tools is generally in a complex environment, such as powering electric chain saws, where users should avoid using the multi-purpose mobile power supply for simultaneously powering the electric tools and the 3C electronic products, especially mobile phone and other communication equipment, which are often connected by data cables during powering. In this case, it is liable to cause operation accidents and cause unsafe use of the multi-purpose mobile power supply. Therefore, when the second discharge interface is installed and connected to the corresponding interface of the electric tool, the first discharge interface is at least partially covered by the electric tool, so that the first discharge interface for powering the 3C electronic products cannot be used normally, which effectively eliminates the operation situation of simultaneously powering the electric tools and the 3C electronic products by the multi-purpose mobile power supply, ensuring the safety of users.

It should be noted that: the electric tool200is not limited to cordless hand-held electric tools, but also includes gardening tools, cordless vacuum cleaners, direct current (DC) air compressors and other power operation equipment that use secondary batteries as power supplies. Specifically, in this embodiment, the cordless hand-held electric tool is taken as an example.

In order to ensure that when the second discharge interface20is installed and connected to the corresponding interface of the electric tool200, the first discharge interface is at least partially covered by the electric tool200. There are various implementation methods, such as arranging the first discharge interface10and the second discharge interface20on the same surface of the multi-purpose mobile power supply100.

When the second discharge interface20is installed and connected to the corresponding interface of the electric tool200, since the first discharge interface10and the second discharge interface20are located on the same surface, the first discharge interface10will be covered and blocked by the surface of the electric tool opposite to the surface of the multi-purpose mobile power supply.

At this time, the first discharge interface10can be completely covered and blocked, which ensures the powering safety, prevents external dust, litter, debris, and the like from entering the first discharge interface10when the multi-purpose mobile power supply supplies power to the electric tool, and plays a role in protecting the first discharge interface10so as to prolong the service life of the first discharge interface10.

In addition, there are the following implementation methods:

Referring toFIG.1andFIG.2, the first discharge interface10is arranged on the first side surface100aof the multi-purpose mobile power supply100, and the second discharge interface20is arranged on the second side surface100badjacent to the first side surface100a; and the electric tool200is configured with a mounting portion corresponding to the second discharge interface20, and the mounting portion is correspondingly provided with the connecting surface2000aopposite to the second discharge interface20and a mounting side surface2000bconfigured for at least partially covering the first discharge interface10.

In this way, the mounting side surface2000bof the mounting portion of the electric tool200functions to at least partially cover the mounting side surface2000bof the first discharge interface10. More preferably, the mounting side surface2000bof the mounting portion of the electric tool200functions to completely cover the mounting side surface2000bof the first discharge interface10, which ensures the powering safety, prevents external dust, litter, debris, and the like from entering the first discharge interface10when the multi-purpose mobile power supply supplies power to the electric tool, and plays a role in protecting the first discharge interface10so as to prolong the service life of the first discharge interface10.

More specifically, the multi-purpose mobile power supply100is substantially rectangular, and the first side surface100aextends along the length direction of the multi-purpose mobile power supply100; the second side surface100bextends along the width direction of the multi-purpose mobile power supply100.

In this way, when the users connect the multi-purpose mobile power supply100to the electric tool200, the users can hold the multi-purpose mobile power supply100in the width direction and insert it along the length direction. Since the distance of the width direction is short, the users can conveniently hold the multi-purpose mobile power supply100during operation.

Additionally, the multi-purpose mobile power supply100is configured for a direct assembling and disassembling connection with the electric tool200, and at least one surface of the multi-purpose mobile power supply100is in a latching connection with the corresponding surface of the electric tool200.

The multi-purpose mobile power supply100and the electric tool200are subjected to the direct assembling and disassembling connection without other parts used for switching, such that the operation is quick and convenient.

The first discharge interface10is arranged on the surface of the multi-purpose mobile power supply100in the latching connection with the electric tool200. In this way, the surface of the electric tool200corresponding to the latching connection can at least partially cover the first discharge interface10.

Moreover, the first discharge interface10is preferably arranged above the latch structure30of the multi-purpose mobile power supply100, so that the surface of the electric tool200corresponding to the latching connection will completely cover the first discharge interface10, which ensures the powering safety, prevents external dust, litter, debris, and the like from entering the first discharge interface10when the multi-purpose mobile power supply supplies power to the electric tool, and plays a role in protecting the first discharge interface10so as to prolong the service life of the first discharge interface10.

More specifically, the latch structure30includes the latch groove30bprovided on the surface of the multi-purpose mobile power supply for the latching connection with the corresponding surface of the electric tool200; the electric tool200further includes at least one unlocking mechanism for manually disengaging a latch provided on the electric tool from the latch groove30b.

Since the surface of the multi-purpose mobile power supply100is only provided with the latch groove, and the unlocking mechanism is arranged on the electric tool, there is no significant height difference on any surface of the multi-purpose mobile power supply100, that is, there is no unlocking mechanism for manual operation on the battery pack of a traditional tool.

Furthermore, the latch structure30further includes the assembling and disassembling guide structure30a, and the assembling and disassembling guide structure30alinearly extends toward and is connected to the latch groove.

In addition, it should also be mentioned that the first discharge interface10includes the USB-A interface10aand/or the USB-C interface10b.

Through setting up the USB interface, the basic functions of the mobile power supply are satisfied; for example, during working in the field, when it is required to conduct telephone communication or network communication in a situation where the corresponding communication equipment is out of power, the communication equipment can be connected to the mobile power supply through the USB interface and the data cable to be charged, which is convenient for using the communication equipment. Specifically, the setting of the USB-C interface can further realize a bidirectional charging and discharging function. The setting of the USB-C interface makes the battery of the multi-purpose mobile power supply be charged by connecting the charger of the general mobile power supply to an external power supply without being equipped with a special charger, which is convenient for using and also saves the cost of additional configurations of the charger for the manufacturer.

Referring toFIGS.4to8, the multi-purpose mobile power supply100includes the bottom surface100d, the top surface100c, two opposite first side surfaces100aextending along the length direction l1of the mobile power supply, two opposite second side surfaces100bextending along the width direction l2, and further includes the first discharge interface10and the second discharge interface20.

The first discharge interface10is configured for powering the 3C electronic products, such as computers, tablet computers, mobile phones or digital audio players.

The second discharge interface20is configured to supply power to the electric tool. In order to facilitate users to operate and connect the multi-purpose mobile power supply100to the electric tool200, the second discharge interface20is arranged on any second side surface100b. In addition, in order to rationally lay out the position of the discharge interface, the second discharge interface20and the first discharge interface10are located on different planes, and certainly, they can also be arranged on the same plane. The second discharge interface20includes the first terminal20a, and the first terminal20ais configured for press-fitting with the corresponding terminal of the electric tool200along the length direction l1. In this way, when the users connect the multi-purpose mobile power supply100to the electric tool200, the users can hold the multi-purpose mobile power supply100in the width direction and insert it along the length direction. Since the distance of the width direction is short, the users can conveniently hold, use and operate the multi-purpose mobile power supply.

It should be noted that the electric tool200is not limited to cordless hand-held electric tools, but also includes gardening tools, cordless vacuum cleaners, DC air compressors and other power operation equipment that use secondary batteries as power supplies. Specifically, in this embodiment, the cordless hand-held electric tool is taken as an example.

Additionally, in order to facilitate the installation and arrangement of the second discharge interface20, the first terminal20aextends along the length direction and is parallel to the built-in circuit board300of the multi-purpose mobile power supply100.

Referring toFIG.4andFIG.5, in order to rationally lay out the position of the discharge interfaces, the first discharge interface10is arranged on the arrangement plane opposite to the arrangement plane of the second discharge interface20, that is, on another plane opposite to the second side surface100b, that is, on another second side surface100b, such that based on the design, the arrangement of side interfaces is less crowded and dense, which is more convenient for users to operate and use the discharge interfaces.

The power display lamp600or a display screen configured for power display is further provided on the arrangement plane of the first discharge interface10.

The built-in controller of the mobile power supply can detect the battery power in real time, and then control the power display lamp600or the display screen configured for power display to display the current power. The power display lamp600can be multiple LED lights. The controller can display the power by controlling the number of LED lights to be lit. Certainly, it can also be the display screen, where the controller controls the display of the percentage of power to realize the display of the battery pack power.

In addition, the multi-purpose mobile power supply100is configured for the direct assembling and disassembling connection with the electric tool200, and at least one surface of the multi-purpose mobile power supply100is in a latching connection with the corresponding surface of the electric tool200, so as to directly meet powering the electric tool without other switching structure, which makes the operation and use be simple and convenient, and connects the powering of electric tools with the powering of 3C electronic products, achieving the powering in two different fields across borders.

Specifically, the two opposite first side surfaces100aare respectively provided with a latch groove30bfor the latching connection with the corresponding surface of the electric tool200. The surface of the multi-purpose mobile power supply100adapted to the electric tool200for the latching connection is as basically flat as the surface of the housing body of the multi-purpose mobile power supply100; for example, the distance between the surface of the latch groove30bfor the latching connection and the surface of the housing body of the multi-purpose mobile power supply100is not more than 2.5 mm, for instance, it can be set to 2 mm, 1.5 mm, or 1 mm.

In order to facilitate the assembling and disassembling of the mobile power supply, the first side surfaces100aare respectively provided with the assembling and disassembling guide structure30a, and the assembling and disassembling guide structure30alinearly extends along the length direction l1to be connected to the latch groove30b.

The first discharge interface10at least includes the USB-A interface10aand/or the USB-C interface10b, which is connected to the built-in circuit board300of the multi-purpose mobile power supply100.

Through setting up the USB interface, the basic functions of the mobile power supply are satisfied; for example, during working in the field, when it is required to conduct telephone communication or network communication in a situation where the corresponding communication equipment is out of power, the communication equipment can be connected to the mobile power supply through the USB interface and the data cable to be charged, which is convenient for using the communication equipment. Specifically, the setting of the USB-C interface can further realize a bidirectional charging and discharging function. The setting of the USB-C interface makes the battery of the multi-purpose mobile power supply be charged by connecting the charger of the general mobile power supply to an external power supply without being equipped with a special charger, which is convenient for using and also saves the cost of additional configuration of the charger for manufacturer.

Moreover, the USB-C interface10bis configured for automatically identifying whether the connected external device is a charging device or a smart terminal. When the external device is the charging device, the mobile power supply is charged through the charging device. When the external device is the smart terminal, the smart terminal is charged or configured to charge the mobile power supply.

In addition, the mobile power supply further includes the wireless charging receiving module, which is configured to adapt to a standard wireless charging transmitting module for wireless charging, and the electromagnetic coil of the wireless charging receiving module and the built-in circuit board of the mobile power supply are arranged in parallel.

When wireless charging is required, the controller controls the wireless charging receiving module60A to work, and then charge the battery. The wireless charging receiving module60A further expands the charging method of the mobile power supply, and reduces the restriction on the charging environment of the mobile power supply.

Referring toFIGS.1to8, the multi-purpose mobile power supply100includes: the first discharge interface10configured for powering a 3C electronic product; the second discharge interface20configured for powering the electric tool200; and at least one latch groove30b, which is arranged on the surface of the housing body of the multi-purpose mobile power supply100, and is configured for the latching connection with the electric tool200.

The surface of the housing body where the latch groove30bis arranged or the surface adjacent thereto has no protrusion.

The mobile power supply can meet powering the 3C products, and adapt to the electric tools for powering, and the structure layout is reasonable. When the surface of the housing body of the mobile power supply is arranged with the latch groove, the traditional battery pack used in matching electric tools generally has the protuberant latch, and the unlocking mechanism linked with the latch for user operation, causing the battery pack to have a complex structure layout and a large structure size, and be inconvenient to carry and use as a mobile power supply. Therefore, in the mobile power supply provided by the present invention, a conventional latch is set as a latch groove, and the traditional unlocking mechanism is omitted, so that the surface of the housing body where the latch groove is arranged or the surface adjacent thereto has no protrusion.

Referring toFIG.9toFIG.12, the multi-purpose mobile power supply100includes the bidirectional charging and discharging interface10A and a tool power supply interface20A, that is, the second discharge interface20.

The bidirectional charging and discharging interface10A is configured for charging or discharging the 3C electronic products, such as computers, tablet computers, mobile phones or digital audio players. The bidirectional charging and discharging interface10A is connected to the built-in bidirectional charging and discharging circuit30A of the multi-purpose mobile power supply100.

The bidirectional charging and discharging interface10A is not only configured to supply power to the 3C electronic products, but also can charge itself through the 3C electronic products, which facilitates the use of the multi-purpose mobile power supply and reduces the restrictions on the charging methods of the multi-purpose mobile power supply.

The second discharge interface20is configured for powering the electric tool200, and includes the first terminal20a. The first terminal20ais configured for press-fitting with the corresponding terminal of the electric tool200.

It should be noted that: the electric tool200is not limited to cordless hand-held electric tools, but also includes gardening tools, cordless vacuum cleaners, DC air compressors and other power operation equipment that use secondary batteries as power supplies. Specifically, in this embodiment, the cordless hand-held electric tool is taken as an example.

When the first terminal20ais press-fitted with the corresponding terminal of the electric tool200, the surface of the multi-purpose mobile power supply100is in contact with the electric tool200, and at least one surface is in a latching connection with the corresponding surface of the electric tool200.

The multi-purpose mobile power supply100is improved in aspects of the single charging and discharging interface and the single function of the traditional mobile power supply, and the multi-purpose mobile power supply100can also be in a direct latching connection with the electric tool200to directly meet powering the electric tool200, and make the operation and use be simple and convenient. Therefore, the multi-purpose mobile power supply connects the powering of the electric tools with the powering of the 3C electronic products, achieving the powering in two different fields across borders.

As shown inFIG.9, the multi-purpose mobile power supply100further includes the control switch601which is electrically connected to the bidirectional charging and discharging circuit30A to control the charging or discharging of the bidirectional charging and discharging interface10A.

Specifically, the control switch601is electrically connected to the bidirectional charging and discharging circuit30A through the controller40A to control the charging or discharging of the bidirectional charging and discharging interface10A.

More specifically, the control switch601includes a discharge-starting switch and a charge-starting switch. When it is required to charge the connected external device, the discharge-starting switch is selected to charge the external device, and when it is required to charge the battery pack itself, the charge-starting switch is selected, and the battery pack is charged by the external device.

In addition, in order to more conveniently and intelligently realize the charging or discharging control of the multi-purpose mobile power supply100, the bidirectional charging and discharging interface10A can also be configured to automatically recognize whether the external device is a charging power supply or a device that needs to be charged, and automatically switch the charging or discharging state.

The bidirectional charging and discharging interface10A can automatically identify the connected external device, and then automatically identify whether the bidirectional charging and discharging interface10A is connected to the charging power supply or the device that needs to be charged, so as to control the battery pack to automatically switch between the charging and discharging states, which is convenient for operation and use. In addition, when the voltage of the connected external device is higher than the voltage of the multi-purpose mobile power supply100, the connected external device can also be configured as the charging power supply to charge the multi-purpose mobile power supply100through the bidirectional charging and discharging interface10A.

Additionally, the multi-purpose mobile power supply100may further include the display and control module70A. The display and control module70A is electrically connected to the bidirectional charging and discharging circuit30A, and is configured for controlling the charging or discharging of the bidirectional charging and discharging interface10A according to user operation instructions.

Specifically, the display and control module70A is electrically connected to the bidirectional charging and discharging circuit30A through the controller40A. For example, the display and control module70A is provided with a touch switch, and the touch switch is configured for controlling the charging or discharging of the bidirectional charging and discharging interface10A according to the user operation instructions.

In addition, the multi-purpose mobile power supply100further includes the battery management module50A. The battery management module50A is electrically connected to the built-in battery unit80and is electrically connected to the display and control module70A through the controller40A. The battery management module50A is configured for monitoring the battery status and/or battery capacity of the battery unit and sending the detected battery status and/or battery capacity to the display and control module70A.

The controller40A can control the display screen of the display and control module70A to display the battery working status information, such as charging voltage and charging current, discharging voltage and discharging current, battery temperature, and the like.

In addition, the maximum output power of the bidirectional charging and discharging interface10A is ≤100 W, and the voltage output range is 5-20 V, to meet the charging and discharging requirements of the 3C products such as the mobile phones, laptops and the like.

Moreover, in order to facilitate users to carry and use by air, the maximum capacity of the multi-purpose mobile power supply100is ≤160 WH.

In addition, referring toFIG.11andFIG.12, an assembly of the multi-purpose mobile power supply and the electric tool includes: the multi-purpose mobile power supply100described above; and the electric tool200, including: a motor; the mounting portion200cconfigured for the freely assembling and disassembling connection with the multi-purpose mobile power supply100; the power supply terminal200aarranged on the mounting portion200cand electrically connected to the motor, where the power supply terminal200ais configured for being combined with the first terminal20a; a latch arranged on the mounting portion200c, where the multi-purpose mobile power supply100is provided with a latch groove corresponding to the latch, and the latch is fitted in the latch groove in the latching connection; and at least one unlocking mechanism configured to manually disengage the latch from the latch groove.

Further, the tool power supply interface20A includes at least one second terminal20b, and the second terminal20bis configured for transmitting a control signal for controlling the charging and/or discharging of the built-in battery unit80.

The electric tool200includes the signal terminal200b, the signal terminal200bis arranged on the mounting portion200cand can be combined with the second terminal20b. Since the first terminal20ais configured for circuit conduction, the passing current is relatively large, needing to be tightly and fully contacted, while the second terminal20bis configured for signal transmission, the passing current is singularly small, and the contact is sufficient. Therefore, the fitting pressure of the second terminal20band the signal terminal200bis less than the fitting pressure of the first terminal20aand the power supply terminal200a.

Moreover, when power-on insertion is conducted, in order to let the circuit on the first terminal20awork first, and then to identify the communication through the second terminal20b, so as to allow the signal interface of the second terminal20bto better identify, the distance between the opening end portion of the second terminal20band the corresponding opening of the surface of the power supply is greater than the distance between the opening end portion of the first terminal20aand the corresponding opening of the surface of the power supply.

Finally, it should be noted that the above embodiments are only configured to illustrate the technical solutions of the present invention, not to limit the present invention; although the present invention has been described in detail with reference to the above embodiments, those ordinary skilled in the art should understand that: the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.