CN220374551U

CN220374551U - Electric carrier

Info

Publication number: CN220374551U
Application number: CN202321550953.6U
Authority: CN
Inventors: 颜秋波; 张文宇
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2023-01-18
Filing date: 2023-06-16
Publication date: 2024-01-23
Anticipated expiration: 2033-06-16
Also published as: CN219969717U; CN219821485U; CN219806849U; CN220009806U; CN219969716U; CN220009805U; CN219821486U; CN220076454U

Abstract

The application discloses an electric carrier, which comprises a carrier body, a driving unit and a power supply unit, wherein the driving unit is used for driving wheels of the carrier body to rotate, the power supply unit is used for supplying power to the driving unit, the carrier body comprises a foldable frame and an operating rod, the power supply unit comprises at least one battery mounting part and a plurality of battery packs, and the battery mounting part at least comprises a socket which is suitable for being mechanically and electrically connected with a power output port of the battery pack; when the battery package is installed in battery installation department, the battery package is suitable for to the power supply of drive unit, and the electric carrier of this application realizes the power supply through setting up a plurality of battery packages, can show the continuation of journey and the power of increase handcart.

Description

Electric carrier

Technical Field

The application relates to the technical field of conveying devices and carrying devices, in particular to an electric carrier.

Background

The trolley is widely applied to production and life, is convenient to operate, has light dead weight and is very convenient to load and transport objects in short distances. The initial cart is pushed and pulled manually, and is very laborious to push or pull by means of two hands for heavier objects or for places with steep gradients, and then the small-sized cart driven by electric power is arranged, so that the burden of workers can be effectively reduced, and the transportation efficiency is improved.

However, the conventional electric carrier has the following drawbacks: the common electric carrier is generally provided with only a single number of power supplies, and when the handcart is used for loading and transporting objects with different weights, the single power supply can provide more limited cruising and power, so that the high-strength use of the handcart is difficult to meet.

Disclosure of Invention

An object of the present application is to provide an electric carrier that is long in cruising and strong in power.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: an electric carrier comprises a carrier body, a driving unit and a power supply unit, wherein the driving unit is used for driving wheels of the carrier body to rotate, the power supply unit is used for supplying power to the driving unit, the carrier body comprises a foldable frame and an operation rod, the power supply unit comprises at least one battery mounting part and a plurality of battery packs, and the battery mounting part at least comprises a socket which is suitable for being mechanically and electrically connected with a power output port of each battery pack; the battery pack is adapted to supply power to the driving unit when the battery pack is mounted to the battery mounting portion.

As an improvement, the battery pack is adapted to be detachably accommodated in the battery mounting portion.

Specifically, at least one battery compartment is arranged on the battery mounting part, and the battery pack is suitable for being accommodated in the battery compartment.

As a modification, the number of the battery mounting portions is one and has a plurality of the battery compartments, and the battery mounting portions are arranged on the operation lever or on the frame.

Preferably, the battery bins are arranged on the battery mounting part in parallel with each other.

As one preferable, the number of the battery mounting parts is plural, and the battery mounting parts are arranged on the frame or on the operation lever or on both the frame and the operation lever.

As another preferable aspect, the battery mounting portion has a plurality of the battery compartments arranged in parallel with each other on the battery mounting portion.

As an improvement, the battery mounts are respectively arranged on the frames at both sides of the operation lever.

Preferably, the battery mounting parts are symmetrically arranged on the frames at both sides of the operating lever.

As an improvement, the frame includes a front bracket to which the operation lever is hinged, and the battery mounting portion is disposed on the front bracket.

As an improvement, the battery mounting portion is detachably connected with the vehicle body; the battery pack is detachably connected with the battery bin.

As an improvement, a plurality of the battery packs supply power to the driving unit one by one or simultaneously.

Preferably, a plurality of the battery packs are supplied to the driving unit one by one, and the power supply sequence of the battery packs is determined by the voltage level at the time of starting the power supply to the driving unit.

An electric carrier comprises a carrier body, a driving unit and a power supply unit, wherein the driving unit is used for driving wheels of the carrier body to rotate, the power supply unit is used for supplying power to the driving unit, the carrier body comprises a foldable frame and an operation rod, the power supply unit comprises at least one battery mounting part and a plurality of battery packs, and the battery mounting part comprises at least one socket which is suitable for being electrically connected with a power output port of each battery pack through an electric connecting wire; the battery pack is mounted on the battery mounting portion and connected with the socket through the electrical connection wire, and is suitable for supplying power to the driving unit.

The electric carrier comprises a carrier body, a driving unit and a power supply unit, wherein the driving unit is used for driving wheels of the carrier body to rotate, the power supply unit is used for supplying power to the driving unit, the carrier body comprises a foldable frame and an operation rod, the power supply unit comprises at least one battery mounting part, a circuit module and a plurality of battery packs, and the battery mounting part at least comprises a socket which is suitable for being mechanically and electrically connected with a power output port of the battery pack; each of the plurality of battery packs is initially configured as a power source for a hand-held power tool; the circuit module is configured to electrically connect at least the battery pack mounted to the battery mounting portion with the driving unit, whereby at least one of the wheels is driven by electric power supplied from the battery pack.

As an improvement, the battery mounting portion is configured to receive a plurality of the battery packs when the plurality of the battery packs are detached from the hand-held power tool.

Preferably, the circuit module is configured to be able to form a parallel circuit in which a plurality of the battery packs are electrically connected in parallel.

Preferably, the circuit module is configured to be able to form a series circuit in which a plurality of the battery packs are electrically connected in series.

Preferably, the circuit module is configured to selectively switch any one of a parallel circuit forming a plurality of battery packs electrically connected in parallel and a series circuit forming a plurality of battery packs electrically connected.

Preferably, the hand-held power tool is selected from the group consisting of an electric drill, an electric screwdriver, an electric wrench, an electric sander, an electric hammer, an electric circular saw, an electric reciprocating saw, an electric chain saw, an electric impact hammer, an electric garden tool, and an electric blower.

Compared with the prior art, the beneficial effect of this application lies in:

1. the utility model provides an electric carrier promotes duration through increasing the quantity of battery package, can let the handcart satisfy the use of longer time, reduces the extravagant time of charging or trading the electricity.

2. The electric carrier of this application promotes power through increasing the quantity of battery package, through promoting voltage and the electric current that carries to drive unit, can promote parameters such as drive unit's moment of torsion and rotational speed, realizes the increase of power, makes the handcart pass through topography and barrier more easily.

Drawings

Fig. 1 is a perspective view of a battery mounting part according to a preferred embodiment of the present application when the battery mounting part is one;

FIG. 2 is a schematic illustration of the mating of a battery mount and a battery pack according to a preferred embodiment of the present application

Fig. 3 is a front view of the battery mounting part according to a preferred embodiment of the present application when one is used;

fig. 4 is a schematic view of the structure of a battery compartment of a battery mounting part according to a preferred embodiment of the present application in a plurality of battery compartments;

fig. 5 is a front view of a battery mounting part according to a preferred embodiment of the present application in two;

fig. 6 is a schematic view of the structure when the battery compartment of the battery mounting part is one according to a preferred embodiment of the present application.

In the figure: 1. a vehicle body; 11. a frame; 111. a chassis; 112. a side bracket; 113. a front bracket; 114. a rear bracket; 12. a wheel; 13. an operation lever; 131. a handle end; 2. a driving unit; 3. a power supply unit; 31. a battery mounting portion; 311. a battery compartment; 3111. a socket; 312. a cover body; 32. and a battery pack.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

The application is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 6, the present application provides an electric carrier, which includes a vehicle body 1, a driving unit 2, and a power supply unit 3, wherein the power supply unit 3 is used for supplying power to the driving unit 2, and the driving unit 2 is used for driving at least one wheel 12 to rotate, so that the vehicle body 1 can advance or retract under the assistance of the driving unit 2.

The handcart that relies on the manpower to pull with the tradition changes electric drive into, and the user only needs the advancing direction of control handcart when using, labour saving and time saving, the transportation of long distance and heavy object that carries out that can be more convenient, the ground of accessible different slopes, runs into steep hillside and also can easily deal with, has improved the use convenience.

The vehicle body 1 comprises a frame 11, wheels 12 and an operating rod 13, wherein the frame 11 is provided with a containing space for containing objects, the wheels 12 are arranged at the bottom of the frame 11, the operating rod 13 is arranged at one end of the frame 11, when a user uses the vehicle body, the objects are placed in the frame 11, and the driving unit 2 drives the wheels 12 to drive the frame 11 to move by pulling the operating rod 13, so that the object carrying purpose is realized.

It should be noted that the vehicle body 1 may further include a fabric layer (not shown in the drawings) disposed on the frame 11, where the accommodating space of the vehicle body 1 is defined by the frame 11 and the fabric layer, and the fabric layer is disposed to facilitate the weight reduction of the vehicle body 1 and improve the accommodating capacity of the vehicle body 1, so that an object placed in the fabric layer is not easy to fall out of the vehicle body 1 through the frame 11.

In some embodiments, the frame 11 is rectangular, is a foldable frame 11, and can be folded for storage after use, so that the occupied space of the electric cart is reduced.

The power supply unit 3 includes at least one battery mounting portion 31 and a plurality of battery packs 32, the battery mounting portion 31 including at least one receptacle 3111 adapted for mechanical and electrical connection with a power outlet of the battery pack 32; when the battery pack 32 is mounted on the battery mounting portion 31, the battery pack 32 is suitable for supplying power to the driving unit 2, the arrangement mode of the battery packs 32 can improve the cruising ability of the handcart and the power parameters of the driving unit 2, the service time of the handcart is prolonged, the time wasted by charging or changing electricity is reduced, and the electric power can pass through terrains and obstacles more easily.

In some embodiments, the battery pack 32 is suitable for being detachably stored and installed on the battery installation part 31, and can be separately charged by separating the battery pack 32 from the battery installation part 31, and when in use, the battery pack 32 is directly installed on the battery installation part 31 and connected with the battery installation part, so that the driving unit 2 can be powered, the electric carrier is prevented from being moved indoors when in charging, the manpower waste and the time are reduced, the standby battery pack 32 can be conveniently used, and the battery pack 32 can also conveniently supply power to other similar machines, thereby greatly facilitating outdoor transportation and activities.

At least one battery compartment 311 is formed in the battery mounting portion 31, the battery packs 32 are suitable for being accommodated in the battery compartment 311, and the battery packs 32 in different numbers can be mounted and accommodated by arranging the battery mounting portion 31, so that space is saved, and the arrangement of the battery packs 32 is more compact.

The power supply unit 3 still includes the lid 312 that can open and shut with battery installation department 31 and be connected, and the lid 312 is suitable for the cover to establish on the up end of battery installation department 31, and the setting of lid 312 is favorable to providing waterproof dirt-proof shielding for the battery package 32, at first avoids dust, steam to get into battery compartment 311 and causes short circuit or damage, and secondly can prevent to run into jolt vibrations in the transportation, and the battery package 32 slips from the opening part of battery installation department 31, is favorable to promoting the stability of power supply unit 3.

At least one group of limiting structures (not shown) are arranged on the inner side of the cover body 312, when the cover body 312 covers the upper end face of the battery mounting part 31 and the opening of the battery pack 32 is closed, the limiting structures are arranged opposite to the battery pack 32 in the battery compartment 311, and a certain gap exists between the limiting structures and the battery pack 32; through limit structure with the displacement distance of restriction battery package 32, avoid using electric carrier's in-process road surface jolt to cause the roll-off of battery package 32 to break even, promote the security that the user used, of course also can set up lid 312 cover and establish when on the up end of battery installation department 31, limit structure offsets with the battery package 32 in the battery compartment 311.

In the embodiment shown in fig. 3 to 4, the number of the battery mounting portions 31 is one and the battery mounting portions 31 are provided with a plurality of battery bins 311, the battery mounting portions 31 are arranged on the operation rod 13 or on the frame 11, and the mounting and accommodating of the plurality of battery packs 32 can be completed through one battery mounting portion 31, so that the occupation of the space of the vehicle body 1 is reduced, the weight of the vehicle body 1 is reduced, and the portability is improved.

In the embodiment shown in fig. 5 to 6, the number of the battery mounting portions 31 is plural, the battery mounting portions 31 are arranged on the frame 11 or on the operation rod 13 or on both the frame 11 and the operation rod 13, the mounting and accommodating of a larger number of battery packs 32 can be realized through the plural battery mounting portions 31, the cruising and power of the trolley can be further improved, the use experience can be improved, various arrangement modes can be realized by arranging the battery mounting portions 31 on the frame 11 and the operation rod 13, the space around the vehicle body 1 can be fully utilized, and the compactness of the structure can be improved.

The battery mounting parts 31 are preferably arranged on the frames 11 at both sides of the operation rod 13, respectively, and since the operation rod 13 protrudes outside the frames 11, the battery mounting parts 31 are arranged at both sides of the operation rod 13 to effectively utilize the space on the frames 11 at both sides of the operation rod 13, and when the handcart is stationary or moving, the battery mounting parts 31 are not easy to protrude from the operation rod 13, so that the whole structure of the folded handcart is more compact.

It is noted that the battery bins 311 are arranged on the battery mounting portion 31 in parallel, so that the appearance structure of the battery mounting portion 31 can be more regular, a larger number of battery bins 311 can be arranged in the same volume, and meanwhile, the battery pack 32 can be conveniently disassembled and assembled.

In the embodiment shown in fig. 4, a plurality of battery compartments 311 are arranged in parallel in the lateral direction of the battery mounting portion 31.

In some embodiments, the plurality of battery compartments 311 are arranged in parallel along the longitudinal direction of the battery mounting portion 31

In the embodiment shown in fig. 5, the battery mounting parts 31 are symmetrically arranged on the frames 11 at both sides of the operation lever 13, and the symmetrical arrangement can make the weight at both sides of the cart more balanced and more beautiful, and when the number of battery packs 32 is large, the overturning due to the weight imbalance does not occur.

In some embodiments, the battery mounting portion 31 is detachably connected to the vehicle body 1, and in actual use, the corresponding battery mounting portion 31 can be mounted according to the number of battery packs 32 used as needed, and after the unnecessary battery mounting portion 31 is detached, the weight of the cart can be reduced and portability of the cart can be improved.

In some embodiments, the battery pack 32 is detachably connected with the battery compartment 311, and the battery pack 32 can be separately charged after being separated from the battery compartment 311, so that the battery pack 32 can be directly contained in the battery compartment 311 and connected to supply power to the driving unit 2 during use, the electric carrier is prevented from being moved indoors during charging, the manpower waste and the time are reduced, the standby battery pack 32 can be conveniently used, the battery pack 32 can also be conveniently used for supplying power to other similar machines, and the outdoor transportation and the activities are greatly facilitated.

In some embodiments, multiple battery packs 32 simultaneously power the drive unit 2, enabling more of the cruising of the cart and the power of the drive unit 2.

In some embodiments, the plurality of battery packs 32 supply power to the driving unit 2 one by one, and the power supply sequence of the battery packs 32 is determined by the voltage level when starting to supply power to the driving unit 2, so that the cruising of the trolley can be greatly improved, and the waste of electric quantity is avoided.

The frame 11 includes a chassis 111, side brackets 112 positioned at both sides of the chassis 111, and front and rear brackets 113 and 114 coupled to the chassis 111 and the side brackets 112, the chassis 111 includes front and rear plates rotatably coupled, the front bracket 113 is rotatably coupled to the front plate, the rear bracket 114 is rotatably coupled to the rear plate, two side brackets 112 are disposed at both sides of the chassis 111, and both ends are respectively coupled to the front and rear brackets 113 and 114, the chassis 111 and the side brackets 112 cooperate to form a receiving space for receiving an object, the front and rear brackets 113 and 114 are non-foldable, and the chassis 111 and the side brackets 112 are configured to be folded.

When folding is required, the front bracket 113 and the rear bracket 114 are close to each other, the junction of the front and rear plates is rotated to be close to each other, and the side brackets 112 are rotated to be deformed at the hinge, so that the frame 11 can be folded together.

It should be noted that the specific structure of the foldable frame 11 may be selected in many ways, and all the frames 11 that can be folded to achieve the volume reduction are within the scope of the present application.

The number of the wheels 12 is at least three, two wheels 12 are in a group, two wheels 12 of each group are arranged at intervals along the width direction of the frame 11, if the number of the wheels 12 is odd, the last wheel 12 is in a group alone, each group of wheels 12 is arranged in parallel along the length direction of the frame 11, wherein one group of wheels 12 or a plurality of groups of wheels 12 closest to the operating rod 13 are universal wheels, the vehicle body 1 is guided to change direction along with the external force applied to the operating rod 13 by a user, and the driving unit 2 drives at least one wheel 12 in the other groups to rotate.

In the embodiment shown in fig. 1, the wheel 12 includes a pair of front wheels provided at a front end of the chassis 111 at intervals, and a pair of rear wheels provided at a rear end of the chassis 111 at intervals.

In some embodiments, a pair of rear wheels are connected by a driving shaft, and the driving unit 2 drives the driving shaft to rotate so that the rear wheels rotate forward, and the driving shaft and the rear wheels are connected in a manner of the related art, which is not described herein.

The operation lever 13 may be provided at the front end of the frame 11 or may be provided at the rear end of the frame 11, and in the embodiment shown in fig. 1, the operation lever 13 is provided at the front end of the frame 11 with the operation lever 13 hinged to the front rail.

The operating lever 13 is hinged to the frame 11 so that the operating lever 13 can rotate between its initial position and a push-pull position.

The handle end 131 is arranged on the operating rod 13, a user can hold the handle end 131 to push and pull the car body 1, the handle end 131 is of an annular structure, fingers of the user can penetrate through the handle end 131 to hold, the operating feeling is improved, and the push and pull difficulty is reduced.

In some embodiments, the battery mounting portion 31 is disposed on the front bracket 113, where the front bracket 113 is generally on the user operation side, i.e. the side on which the operation lever 13 is mounted, and the battery mounting portion 31 is disposed near the user operation side, so that the battery pack 32 can be replaced directly when the battery pack 32 is under-charged, without walking around the vehicle body 1.

When the electric carrier is used by a user, the stopping and starting of the electric carrier can be controlled by using only one hand, the other hand of the user is liberated, and when the electric carrier is used by the user for transportation, the idle hand can be used for making a call or looking at map to guide and other operations, so that the operability and convenience of the electric carrier are improved.

The driving unit 2 and the power supply unit 3 are positioned on different sides of the frame 11, so that the driving unit 2 and the power supply unit 3 are prevented from interfering with each other, the vehicle body 1 can be balanced, and the design is more convenient.

The power supply unit 3 is preferably disposed on the outer side surface of the front bracket 113 and near the top of the front bracket 113, so that it is more convenient for a user to use and it is avoided that the user bends down when inserting and extracting the battery pack 32.

The application also provides an electric carrier, which comprises a carrier body 1, a driving unit 2 and a power supply unit 3, wherein the driving unit 2 is used for driving wheels 12 of the carrier body 1 to rotate, the power supply unit 3 is used for supplying power to the driving unit 2, the carrier body 1 comprises a foldable frame 11 and an operating rod 13, the power supply unit 3 comprises at least one battery mounting part 31 and a plurality of battery packs 32, and the battery mounting part 31 comprises at least one socket 3111 which is suitable for being electrically connected with a power output port of the battery packs 32 through an electric connecting wire; when the battery pack 32 is mounted on the battery mounting portion 31 and connected to the socket 3111 via an electrical connection wire, the battery pack 32 is adapted to supply power to the drive unit 2.

The other type of battery pack 32 is connected with battery mounting portion 31 through the electric connecting wire, is difficult for taking place mechanical disconnection, and the power supply is more stable.

The application also provides an electric carrier, including automobile body 1, drive unit 2 and power supply unit 3, drive unit 2 is used for driving the wheel 12 rotation of automobile body 1, power supply unit 3 is used for supplying power to drive unit 2, automobile body 1 includes collapsible frame 11 and action bars 13, power supply unit 3 includes at least one battery installation department 31, circuit module and a plurality of battery package 32, battery installation department 31 includes at least one socket 3111 that is suitable for carrying out machinery and electricity with the power outlet of battery package 32 and is connected, socket 3111 sets up in battery compartment 311 generally, can realize the quick-operation of battery installation department 31 and battery package 32 through socket 3111 in the battery compartment 311, and is easy and simple to handle.

The circuit module is configured to electrically connect at least the battery pack 32 mounted to the battery mounting portion 31 with the drive unit 2, whereby at least one wheel 12 is driven by the power supplied from the battery pack 32, and power transmission between the battery pack 32 disposed in the battery mounting portion 31 and the drive unit 2 is achieved by the circuit module.

In some embodiments, each battery pack 32 of the plurality of battery packs 32 is initially configured as a power source of the handheld power tool, and the battery packs 32 have strong applicability, and can be used on both the handheld power tool and the electric carrier, and the power supply modes can be unified by disassembling and assembling the use forms of the battery packs 32.

The hand-held power tool may be a tool selected from the group consisting of an electric drill, an electric screwdriver, an electric wrench, an electric sander, an electric hammer, an electric circular saw, an electric reciprocating saw, an electric chain saw, an electric impact hammer, an electric garden tool, and an electric blower.

In some embodiments, the battery mounting portion 31 is configured to be able to receive the plurality of battery packs 32 when the plurality of battery packs 32 are detached from the hand-held power tool, and higher cruising and stronger power can be achieved by receiving the plurality of battery packs 32.

The circuit module is configured to be able to form a parallel circuit in which a plurality of battery packs 32 are electrically connected in parallel.

The circuit module is configured to be able to form a series circuit in which a plurality of battery packs 32 are electrically connected in series.

The circuit module is configured to selectively switch any one of a parallel circuit that forms parallel electrical connection of the plurality of battery packs 32 and a series circuit that electrically connects the plurality of battery packs 32, and the circuit module can automatically or manually switch the electrical connection manner between the plurality of battery packs 32, so that the energy utilization form is more various, and the circuit module is suitable for more use scenes.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an electric carrier, includes automobile body, drive unit and power supply unit, drive unit is used for the drive the wheel of automobile body rotates, power supply unit is used for to drive unit power supply, its characterized in that:

the vehicle body comprises a foldable frame and an operating rod, the power supply unit comprises at least one battery mounting part and a plurality of battery packs, and the battery mounting part at least comprises a socket which is suitable for being mechanically and electrically connected with a power output port of the battery pack; the battery pack is adapted to supply power to the driving unit when the battery pack is mounted to the battery mounting portion.

2. An electric truck as claimed in claim 1, characterized in that: the battery pack is suitable for being detachably accommodated and mounted in the battery mounting part.

3. An electric truck as claimed in claim 1, characterized in that: at least one battery compartment is arranged on the battery mounting part, and the battery pack is suitable for being accommodated in the battery compartment.

4. An electric truck as claimed in claim 3, characterized in that: the number of the battery mounting parts is one and has a plurality of the battery bins, and the battery mounting parts are arranged on the operation lever or on the frame.

5. An electric truck as claimed in claim 4, wherein: the battery bins are arranged on the battery mounting part in parallel.

6. An electric truck as claimed in claim 1, characterized in that: the number of the battery mounting parts is plural, and the battery mounting parts are arranged on the frame or the operating lever or both the frame and the operating lever.

7. An electric truck as claimed in claim 6, wherein: the battery installation part is provided with a plurality of battery bins, and the battery bins are mutually parallel and are arranged on the battery installation part.

8. An electric truck as claimed in claim 6, wherein: the battery mounting parts are respectively arranged on the frames at two sides of the operating rod.

9. An electric truck as claimed in claim 8, wherein: the battery mounting parts are symmetrically arranged on the frames at two sides of the operating rod.

10. An electric truck as claimed in claim 9, wherein: the frame includes a front bracket to which the operation lever is hinged, and the battery mounting portion is disposed on the front bracket.

11. An electric truck as claimed in claim 3, characterized in that: the battery mounting part is detachably connected with the vehicle body; the battery pack is detachably connected with the battery bin.

12. An electric vehicle as claimed in any one of claims 1 to 11, characterized in that: the plurality of battery packs supply power to the driving unit one by one or simultaneously.

13. An electric truck as claimed in claim 12, wherein: the plurality of battery packs supply power to the driving unit one by one, and the power supply sequence of the battery packs is judged by the voltage at the time of starting to supply power to the driving unit.

14. The utility model provides an electric carrier, includes automobile body, drive unit and power supply unit, drive unit is used for the drive the wheel of automobile body rotates, power supply unit is used for to drive unit power supply, its characterized in that:

the vehicle body comprises a foldable frame and an operating rod, the power supply unit comprises at least one battery mounting part and a plurality of battery packs, and the battery mounting part comprises at least one socket which is suitable for being electrically connected with a power output port of the battery pack through an electric connecting wire; the battery pack is mounted on the battery mounting portion and connected with the socket through the electrical connection wire, and is suitable for supplying power to the driving unit.

15. The utility model provides an electric carrier, includes automobile body, drive unit and power supply unit, drive unit is used for the drive the wheel of automobile body rotates, power supply unit is used for to drive unit power supply, its characterized in that:

the vehicle body comprises a foldable frame and an operating rod, the power supply unit comprises at least one battery mounting part, a circuit module and a plurality of battery packs, and the battery mounting part at least comprises a socket which is suitable for being mechanically and electrically connected with a power output port of the battery pack; each of the plurality of battery packs is initially configured as a power source for a hand-held power tool; the circuit module is configured to electrically connect at least the battery pack mounted to the battery mounting portion with the driving unit, whereby at least one of the wheels is driven by electric power supplied from the battery pack.

16. An electric truck as claimed in claim 15, wherein: the battery mounting portion is configured to receive a plurality of the battery packs when the plurality of the battery packs are detached from the hand-held power tool.

17. An electric truck as claimed in claim 15, wherein: the circuit module is configured to be able to form a parallel circuit in which a plurality of the battery packs are electrically connected in parallel.

18. An electric truck as claimed in claim 15, wherein: the circuit module is configured to be able to form a series circuit in which a plurality of the battery packs are electrically connected in series.

19. An electric truck as claimed in claim 15, wherein: the circuit module is configured to selectively switch any one of a parallel circuit that forms a plurality of battery packs electrically connected in parallel and a series circuit that forms a plurality of battery packs electrically connected in series.

20. An electric truck as claimed in claim 15, wherein: the hand-held power tool is selected from the group consisting of an electric drill, an electric screwdriver, an electric wrench, an electric sander, an electric hammer, an electric circular saw, an electric reciprocating saw, an electric chain saw, an electric impact hammer, an electric garden tool, and an electric blower.