CN214479671U

CN214479671U - Charging device and energy supply device

Info

Publication number: CN214479671U
Application number: CN202023156248.7U
Authority: CN
Inventors: 陆春桃; 严安; 李曦; 郭新忠
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-22
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a charging device and an energy supply device. The charging device comprises: a power supply interface for acquiring external power; a charging part electrically connected with the power supply interface; and at least one charger, wherein the charger can be It is detachably connected to the charging unit and can charge the battery pack. Compared with the prior art, the charging device of the present invention can not only charge a plurality of battery packs, but also can take out the charger and the battery pack as a whole, so as to separately charge the battery pack through the charger.

Description

Charging device and energy supply device

Technical Field

The utility model relates to a charging device and have this charging device's energy supply device.

Background

With the development of economy, household electric tools have entered thousands of households. Even more, many users have multiple power tools simultaneously, such as: blowers, chain saws, power drills, and the like. These power tools are equipped with one or more battery packs. However, the existing charger can only charge a single battery pack, and cannot charge a plurality of battery packs at the same time, so that it takes a long time to charge the battery packs one by one each time the user runs out of the electric tool. Secondly, when a user works outdoors, the user occasionally needs to use other tools than the power tool, and emergency alternating current is needed. However, the user is inconvenient because the commercial power cannot be obtained outdoors.

In view of the above problems, there is a need to provide a new charging device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a charging device, this charging device not only can charge for polylith battery package simultaneously to shortened user latency, improved charge efficiency, under extreme condition, can also take out the charger, insert the battery package in the charger wholly moreover, thereby charge for the battery package through the charger alone.

In order to achieve the above object, the present invention provides a charging device, including: the power interface is used for acquiring external power; the charging part is electrically connected with the power interface; and at least one charger detachably connected to the charging part and capable of charging at least one battery pack.

As a further improvement of the present invention, the charging device further includes: an output portion to output electric power to the outside; the inverter unit is used for inverting the power acquired by the charging part from the battery pack through the charger into alternating current and outputting the alternating current through the output part; and a control unit; when the power interface is connected with external power, the control unit controls the charging part to supply power to the charger; when the power interface is disconnected with external power, the control unit controls the inverter unit to work so as to output the power acquired by the charging part from the battery pack through the charger through the output part.

As a further improvement of the present invention, the output unit includes an ac output interface and a dc output interface.

As a further improvement of the present invention, the charging portion includes a base for carrying the battery pack, and the base is provided with a first docking interface matched with the battery pack and a holding groove for accommodating the first docking interface; when the first butt joint interface is in butt joint with the battery pack, the first butt joint interface protrudes out of the accommodating groove; when the first butt joint interface does not work, the first butt joint interface is contained in the containing groove.

As a further improvement of the present invention, the first docking interface is pivotally mounted in the accommodating groove; when the first butt joint interface is in butt joint with a battery pack, the first butt joint interface is rotated, so that the first butt joint interface is perpendicular to the base and protrudes out of the accommodating groove; when the first butt joint interface does not work, the first butt joint interface is rotated, so that the first butt joint interface is parallel to the base and contained in the containing groove.

As a further improvement of the present invention, the charging device is further provided with a second docking interface; the charger is provided with a second docking port matched with the second docking interface, so that the charger obtains power from the charging device and charges a battery pack inserted into the charger.

As a further improvement of the present invention, the charging portion includes a base for supporting the battery pack, the second butt joint interface is a first conductive terminal, and is disposed on the base.

As a further improvement of the present invention, the second docking interface is further provided with a first elastic element matched with the first conductive terminal; the second butt joint port is a second conductive terminal matched with the first conductive terminal; when the charger is placed on the base, the second conductive terminal abuts against the first conductive terminal, and the first elastic element is elastically deformed.

As a further improvement of the utility model, the base is provided with first slide rail, the charger be provided with first slide rail matched with second slide rail, thereby through the cooperation of first slide rail, second slide rail makes charger sliding insertion the portion of charging.

As a further improvement of the utility model, the first slide rail is provided with a micro switch; when the second slide rail is inserted into the first slide rail in a sliding manner, the second slide rail abuts against the microswitch, and at the moment, the control unit controls the charging device to supply power to the second docking interface.

As a further improvement of the present invention, the first slide rail is a guide groove, and the micro switch is disposed in the guide groove; the second slide rail is a guide rail matched with the guide groove.

As a further improvement of the present invention, the opening direction of the guide groove is parallel to the base, thereby making the guide groove can be perpendicular to the direction of the base is right the charger is spacing.

As a further improvement of the utility model, the base is further provided with a guide groove, and the charger is provided with a supporting leg; when the charger is slidably inserted into the charging portion, the support leg slides along the guide groove.

As a further improvement of the present invention, the charging portion includes a base for supporting the battery pack, the second docking interface is a socket, and is disposed on the base.

As a further improvement of the present invention, the charging part includes a base for carrying the battery pack; the charging device further comprises a shell, the shell comprises a side wall perpendicular to the base, and the second butt joint interface is a socket and is arranged on the side wall.

As a further improvement of the present invention, the charger includes a base and a support portion mounted on the base; the base is provided with a plurality of charging potentials which are distributed around the supporting part; the support part is provided with a first heat dissipation unit for dissipating heat of a battery pack inserted into the charger.

As a further improvement of the present invention, the support portion includes a first wall facing the battery pack and a second wall located between adjacent charging points; the first wall is provided with a first ventilation opening, and the second wall is provided with a second ventilation opening corresponding to the first ventilation opening; the first heat dissipation unit drives air to flow in from one of the first ventilation opening and the second ventilation opening and flow out from the other ventilation opening.

As a further improvement of the present invention, a control circuit and a second heat dissipation unit for dissipating heat of the control circuit are disposed in the base; the base is also provided with an air inlet and an air outlet corresponding to the air inlet; the second heat dissipation unit drives airflow to flow in from the air inlet and flow out from the air outlet, so that the control circuit is dissipated.

As a further improvement of the utility model, a radiating fin for auxiliary heat radiation of the control circuit is arranged in the base; the air flow directions of the air inlet and the air outlet are parallel to the radiating fins.

As a further improvement of the present invention, the charging device is further provided with a display unit for displaying charging and discharging information of the battery pack.

The utility model also discloses an energy supply device, including battery package and aforementioned charging device.

The utility model has the advantages that: the charging device of the utility model not only can charge a plurality of battery packs at the same time, thereby shortening the waiting time of users and improving the charging efficiency, but also can invert the electric power in the battery packs into alternating current, thereby solving the problem that the users need emergency power supply outdoors; meanwhile, under extreme conditions, the charger and the battery pack inserted into the charger can be integrally taken out, so that the battery pack is charged through the charger independently.

Drawings

Fig. 1 is a schematic perspective view of the charging device of the present invention.

Fig. 2 is a schematic perspective view of the charging device of the present invention with the top cover and the charger removed.

Fig. 3A is a partially enlarged view of fig. 2.

Fig. 3B is a schematic diagram of the charging device of fig. 1 with the first docking interface upright.

Fig. 3C is a schematic diagram of the first docking interface of the charging device shown in fig. 1 docking with a battery pack.

Fig. 4 is a sectional view of fig. 2 in the direction CC.

Fig. 5 is a perspective view of the charger.

Fig. 6 is a perspective view of the charger of fig. 5 from another angle.

Fig. 7 is an exploded perspective view of the charger of fig. 6.

Fig. 8 is a perspective view of a charging device according to a second embodiment of the present invention with a charger removed.

Fig. 9 is a schematic diagram of a charger according to a second embodiment of the present invention.

Fig. 10 is a perspective view of a charging device according to a third embodiment of the present invention with a charger removed.

Fig. 11 is a schematic diagram of a charger according to a third embodiment of the present invention.

Fig. 12 is a perspective view of the energy supply device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the present invention discloses a charging device 100 for charging a battery pack, and obtaining power from the battery pack and inverting the power to ac power for the user. The charging device 100 includes a housing 10, a charging unit 20 housed in the housing 10, an output unit 30, an inverter unit (not shown), a control unit (not shown), and a charger 40 associated with the charging unit 20.

Referring to fig. 1 and 2, the housing 10 includes a base 11 and a top cover 12 pivotally mounted on the base 11. The base 11 includes a bottom wall 111, a top wall 112 opposite to the bottom wall 111, a side wall 113 perpendicular to the bottom wall 111, and a control board 114 located between the bottom wall 111 and the top wall 112. The bottom wall 111, the top wall 112, the side wall 113 and the control board 114 together enclose to form a containing cavity 115 for containing at least one circuit board. The circuit board is provided with the inverter unit, the control unit, and the like. The side wall 113 is provided with a vent 1131 and a power interface 1132. The ventilation holes 1131 communicate with the receiving cavity 115 to dissipate heat of the components located in the receiving cavity 115. The power interface 1132 is used to obtain external power, such as commercial power. The control panel 114 is inclined for easy operation by the user. The control board 114 is provided with a power switch 1141, a control switch 1142 and a display unit 1143. The power switch 1141 is used to control the on/off of the charging device 100 and the power interface 1132. When the power interface 1132 is connected to the commercial power, if the power switch 1141 is turned on, the charging device 100 may obtain the commercial power through the power interface 1132; if the power switch 1141 is turned off, the charging device 100 cannot obtain the commercial power through the power interface 1132. The control switch 1142 includes a WIFI switch a, a USB switch b, a BC switch c, and an AC switch d. The WIFI switch a is used for opening a WIFI network so as to connect the network through the WIFI, and therefore data exchange is conducted with the cloud end. Further, the data exchange includes uploading, downloading, software updating, and the like of data. When the USB switch b is turned on, the third output interface 33 may output a direct current to the outside. When the BC switch c is turned on, the display unit 1143 displays low battery information of the battery pack. When the AC switch d is opened, the first output interface 31 outputs an alternating current that can be externally output. The display unit 1143 is used to display the charging and discharging information of the battery pack, the status information of the control switch 1142, and the like. The top cover 12 is pivotally mounted on the base body 11. The top cover 12 is matched with the housing 11 to form a chamber, so as to accommodate the charging part 20 and the charger 40. The top cover 12 is provided with a plurality of ventilation holes 121 so that the charging unit 20, the charger 40, and the like located in the chamber can dissipate heat.

Referring to fig. 1, 2 and 3A, the charging unit 20 is mounted on the top wall 112. In the present embodiment, the number of the charging portions 20 is 3. However, in practical applications, the number of the charging units 20 may be set as required. The charging unit 20 includes a base 21, a first docking interface 22 and a second docking interface 23 provided on the base 21, and a guide groove 24 provided on the top wall 112. The base 21 is used for carrying the charger 40 or the battery pack, and is provided with a receiving groove 211 for receiving the first docking interface 22. The edge of the base 21 is provided with a first slide rail 212. The first docking interface 22 is used to dock with a battery pack to charge the battery pack or obtain power from the battery pack. When the first docking interface 22 needs to be docked with the battery pack, the first docking interface 22 is arranged to protrude out of the accommodating groove 211 and is perpendicular to the base 21; when the first docking interface 22 is not docked with the battery pack, the first docking interface 22 is configured to be received in the receiving groove 211. In this embodiment, the first docking interface 22 is pivotally mounted in the receiving cavity 211. Referring to fig. 3B and fig. 3C, when the first docking interface 22 needs to be docked with the battery pack, only the first docking interface 22 needs to be rotated, and at this time, the first docking interface 22 protrudes out of the accommodating groove 211 and is perpendicular to the base 21. When the first docking interface 22 is not docked with the battery pack, the first docking interface 22 only needs to be reversed, and the first docking interface 22 is accommodated in the accommodating groove 211 and is parallel to the base 21. In this embodiment, the number of the first docking interfaces 22 is two, and the first docking interfaces are respectively located at the front end and the rear end of the base 21. In the present embodiment, the battery pack is configured to be inserted into the first docking interface 22 vertically, but in other embodiments, the battery pack and the first docking interface 22 may be configured to be inserted into and docked horizontally.

Referring to fig. 1 and 2, the output portion 30 is disposed on the control board 114 for outputting power to the outside. The output section 30 includes a first output interface 31, a second output interface 32, and a third output interface 33. The first output interface 31 and the second output interface 32 are used for outputting alternating current, and the third output interface 33 is used for outputting direct current. In the present embodiment, the first output interface 31 is configured to output 120V ac, the second output interface 32 is configured to output 220V ac, and the third output interface 33 is configured to output 5V dc. Of course, in other embodiments, the output voltages of the first output interface 31, the second output interface 32 and the third output interface 33 can be set as required. In this embodiment, the third output interface 33 includes a USB2.0 interface, a USB3.0 interface, a Micro USB interface, and a Type-C interface. The inverter unit is configured to invert the electric power obtained from the battery pack by the first docking interface 22 into an alternating current, and output the alternating current through the output unit 30; or the received ac power is adjusted and then output to the output unit 30.

Referring to fig. 5, 6 and 7, the charger 40 is used for charging the battery pack. The charger 40 includes a base 41 and a support 42 mounted on the base 41. The top of the base 41 is provided with a plurality of charging positions 411 matched with the battery pack. The charge potential 411 is distributed around the support portion 42. In this embodiment, the number of the charging potentials 411 is 2, and the charging potentials are symmetrically distributed on two sides of the supporting portion 42, so that the two charging potentials 411 and the supporting portion 42 are collinear. Of course, it is understood that in other embodiments, the number of the charging potentials 411 may be set as required. Preferably, when the number of the charge potentials 411 is greater than 2, the charge potentials 411 form a regular polygon and are distributed around the support portion 42. The bottom of the base 41 is provided with a second docking port 412 matching with the second docking interface 23, a second slide rail 413 matching with the first slide rail 212, and a supporting leg 414. The second docking interface 412 is docked with the second docking interface 23, so that the charger 40 obtains the power of the charging device 100 and charges the battery pack inserted into the charger 40. In this embodiment, the second docking interface 23 includes a first conductive terminal 231 and a first elastic element (not shown) engaged with the first conductive terminal 231. The second mating port 412 is a second conductive terminal that mates with the first conductive terminal 231. When the charger 40 is inserted into the charging portion 20, the second conductive terminal abuts against the first conductive terminal 231, and at this time, the first elastic element is elastically deformed under the action of the first conductive terminal 231. When the charger 40 is detached from the charging part 20, the first conductive terminal 231 is reset by the first elastic element. By such arrangement, the first conductive terminal 231 can apply a certain force to the second conductive terminal, thereby ensuring that the first conductive terminal 231 and the second conductive terminal are in full contact, and avoiding the occurrence of poor contact. The second slide rail 413 is matched with the first slide rail 212 to guide the charger 20 to be slidably inserted into the charging part 20. Preferably, as shown in fig. 4, the first slide rail 212 is further provided with a micro switch 2121. When the second slide rail 413 is slidably inserted into the first slide rail 212, the second slide rail 413 abuts against the micro switch 2121, and at this time, the control unit controls the charging device 100 to supply power to the second docking interface 23. When the second sliding rail 413 is withdrawn from the first sliding rail 212, the micro switch 2121 is reset, and at this time, the control unit controls the charging device 100 to stop supplying power to the second docking interface 23. The arrangement is such that the second docking interface 23 is powered on when and only when the charger 40 is inserted into the charging portion 20, so that the safety of the charging device 100 is effectively enhanced, and the danger of electric shock caused by the user mistakenly touching the second docking interface 23 is avoided. In this embodiment, the first slide rail 212 is a guide groove, and the second slide rail 413 is a guide rail matched with the guide groove. Preferably, the opening direction AA of the guide groove is parallel to the base 21, so that the guide groove can limit the charger 40 in the direction BB perpendicular to the base 21. The support legs 414 are engaged with the guide slot 24 and slide along the guide slot 24. Preferably, in order to balance the charger 40, the height of the supporting foot 414 is greater than the height of the second sliding rail 413. The base 41 is further provided with a control circuit 415 and a second heat dissipation unit 416 for dissipating heat of the control circuit 415. In this embodiment, the second heat dissipation unit 416 is a heat dissipation fan. The side wall of the base 41 is further provided with an air inlet 417 and an air outlet 418 corresponding to the air inlet 417. The fan-heating fan drives the airflow to flow in from the air inlet 417 and flow out from the air outlet 418, so as to dissipate heat of the control circuit 415. Preferably, the fan heat fans include a first heat dissipation fan 4161 located near the intake opening 417 and a second heat dissipation fan 4162 located near the exhaust opening 418. With such an arrangement, the heat dissipation effect of the second heat dissipation unit 416 can be effectively enhanced. Further, a heat sink 419 for assisting heat dissipation of the control circuit 415 is further provided in the base 41. The airflow directions of the air inlet 417 and the air outlet 418 are parallel to the heat sink 419.

Referring to fig. 5 and 7, the supporting portion 42 includes a first wall 421 facing the battery pack and a second wall 422 located between the adjacent charging points 411. The first wall 421 is provided with a first ventilation opening 4211, and the second wall 422 is provided with a second ventilation opening 4221 corresponding to the first ventilation opening 4211. A first heat dissipating unit 423 for dissipating heat of the battery pack inserted into the charger 40 is further provided in the support portion 42. In this embodiment, the first heat dissipation unit 423 is a ventilation fan. The first heat dissipation unit 423 drives airflow to flow between the first and

second ventilation openings

4211 and 4221, thereby dissipating heat from the inserted battery pack.

When the power interface 1132 is connected to the commercial power, the power switch 1141 is turned on first, and then the battery pack is inserted into the first docking interface 22, at this time, the control unit controls the first docking interface 22 to charge the battery pack. If the BC switch c is pressed, the display unit 1143 displays the electric quantity information of the battery pack. When the charger 40 with the battery pack inserted is inserted into the charging unit 20, the control unit controls the charging device 100 to supply power to the charger 40 through the second docking interface 23 and the second docking port 412, so as to charge the battery pack inserted into the charger 40. At this time, if the BC switch c is pressed, the display unit 1143 displays the power information of the battery pack. When the power interface 1132 is disconnected from the commercial power, the control unit controls the first docking interface 22 to obtain power from the battery pack, and the power is inverted into alternating current through the inverter unit, so that power is output externally through the output unit 30. When the AC switch d is pressed, the first output interface 31 may output 120V of AC power to the outside, and the second output interface 32 may output 220V of AC power to the outside. When the USB switch b is pressed, the third output interface 33 may output 5V dc externally.

Further, as shown in fig. 6, the charger 40 is further provided with a power input interface 43, so that the charger 40 is directly connected to the commercial power, so as to charge the battery pack inserted into the charger 40.

Compared with the prior art, the utility model discloses charging device 100 not only can charge for polylith battery package simultaneously to shortened user waiting time, improved charge efficiency, can become the alternating current with the electric power reversal in the battery package moreover, thereby solved the problem that the user needs emergency power source in the open air. Secondly, since the charger 40 is detachably coupled to the charging part 20, the user can easily take out the charger 40 and the battery pack inserted into the charger 40 as a whole, so that the battery pack can be charged by the charger 40 alone in extreme cases.

Fig. 8 and 9 show a charging device 200 according to a second embodiment of the present invention. The structure of the charging device 200 is substantially the same as that of the charging device 100, except that: the second docking interface 201 is a male receptacle and the second docking port 202 is a female receptacle.

Fig. 10 and 11 show a charging device 300 according to a third embodiment of the present invention. The structure of the charging device 300 is substantially the same as that of the charging device 100, except that: the second docking interface 301 is disposed on a sidewall 303 of the housing 302 and the second docking port 304 is disposed on a sidewall 306 of the charger 305. The second docking interface 301 and the second docking port 304 may be sockets or elastic conductive terminals.

Referring to fig. 12, the present invention further discloses an energy supply device 400, which includes a battery pack 50 and the charging device 100/200/300.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A charging device, comprising:

the power interface is used for acquiring external power;

the charging part is electrically connected with the power interface; and

at least one charger detachably connected to the charging part and capable of charging at least one battery pack.

2. The charging device of claim 1, further comprising:

an output portion to output electric power to the outside;

the inverter unit is used for inverting the power acquired by the charging part from the battery pack through the charger into alternating current and outputting the alternating current through the output part; and

a control unit;

when the power interface is connected with external power, the control unit controls the charging part to supply power to the charger;

when the power interface is disconnected with external power, the control unit controls the inverter unit to work so as to output the power acquired by the charging part from the battery pack through the charger through the output part.

3. A charging arrangement as claimed in claim 2, in which: the output part comprises an alternating current output interface and a direct current output interface.

4. A charging arrangement as claimed in claim 2, in which: the charging part comprises a base for bearing a battery pack, and the base is provided with a first butt joint interface matched with the battery pack and an accommodating groove for accommodating the first butt joint interface; when the first butt joint interface is in butt joint with the battery pack, the first butt joint interface protrudes out of the accommodating groove; when the first butt joint interface does not work, the first butt joint interface is contained in the containing groove.

5. The charging device of claim 4, wherein: the first butt joint interface is pivotally connected and installed in the accommodating groove; when the first butt joint interface is in butt joint with a battery pack, the first butt joint interface is rotated, so that the first butt joint interface is perpendicular to the base and protrudes out of the accommodating groove; when the first butt joint interface does not work, the first butt joint interface is rotated, so that the first butt joint interface is parallel to the base and contained in the containing groove.

6. A charging arrangement as claimed in claim 2, in which: the charging device is also provided with a second butt joint interface; the charger is provided with a second docking port matched with the second docking interface, so that the charger obtains power from the charging device and charges a battery pack inserted into the charger.

7. The charging device of claim 6, wherein: the charging part comprises a base for bearing a battery pack, and the second butt joint interface is a first conductive terminal and is arranged on the base.

8. The charging device of claim 7, wherein: the second butt joint interface is also provided with a first elastic element matched with the first conductive terminal; the second butt joint port is a second conductive terminal matched with the first conductive terminal; when the charger is placed on the base, the second conductive terminal abuts against the first conductive terminal, and the first elastic element is elastically deformed.

9. The charging device of claim 7, wherein: the base is provided with a first sliding rail, the charger is provided with a second sliding rail matched with the first sliding rail, and therefore the charger is enabled to be inserted into the charging portion in a sliding mode through the matching of the first sliding rail and the second sliding rail.

10. A charging arrangement as claimed in claim 9, in which: the first sliding rail is provided with a microswitch; when the second slide rail is inserted into the first slide rail in a sliding manner, the second slide rail abuts against the microswitch, and at the moment, the control unit controls the charging device to supply power to the second docking interface.

11. A charging arrangement as claimed in claim 10, in which: the first sliding rail is a guide groove, and the microswitch is arranged in the guide groove; the second slide rail is a guide rail matched with the guide groove.

12. A charging arrangement as claimed in claim 11, in which: the opening direction of the guide groove is parallel to the base, so that the guide groove can limit the charger in the direction perpendicular to the base.

13. A charging arrangement as claimed in claim 9, in which: the base is also provided with a guide groove, and the charger is provided with supporting legs; when the charger is slidably inserted into the charging portion, the support leg slides along the guide groove.

14. The charging device of claim 6, wherein: the charging portion comprises a base for bearing a battery pack, and the second butt joint interface is a socket and is arranged on the base.

15. The charging device of claim 6, wherein: the charging part comprises a base for bearing a battery pack; the charging device further comprises a shell, the shell comprises a side wall perpendicular to the base, and the second butt joint interface is a socket and is arranged on the side wall.

16. The charging device of claim 6, wherein: the charger comprises a base and a supporting part arranged on the base; the base is provided with a plurality of charging potentials which are distributed around the supporting part; the support part is provided with a first heat dissipation unit for dissipating heat of a battery pack inserted into the charger.

17. A charging arrangement as claimed in claim 16, in which: the support part comprises a first wall facing the battery pack and a second wall located between adjacent charging potentials; the first wall is provided with a first ventilation opening, and the second wall is provided with a second ventilation opening corresponding to the first ventilation opening; the first heat dissipation unit drives air to flow in from one of the first ventilation opening and the second ventilation opening and flow out from the other ventilation opening.

18. A charging arrangement as claimed in claim 17, in which: the base is internally provided with a control circuit and a second heat dissipation unit for dissipating heat for the control circuit; the base is also provided with an air inlet and an air outlet corresponding to the air inlet; the second heat dissipation unit drives airflow to flow in from the air inlet and flow out from the air outlet, so that the control circuit is dissipated.

19. A charging arrangement as claimed in claim 18, in which: a radiating fin for performing auxiliary heat radiation on the control circuit is also arranged in the base; the air flow directions of the air inlet and the air outlet are parallel to the radiating fins.

20. A charging arrangement as claimed in claim 1, in which: the charging device is also provided with a display unit for displaying the charging and discharging information of the battery pack.

21. An energy delivery device, comprising:

a battery pack; and

a charging arrangement as claimed in any one of claims 1 to 20.