CN215474524U

CN215474524U - Charging system for overhead working truck and overhead working truck

Info

Publication number: CN215474524U
Application number: CN202121476397.3U
Authority: CN
Inventors: 朱后; 曹家睿; 何霁鹏
Original assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Current assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-11
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a charging system for an overhead working truck and the overhead working truck. This charging system includes: the vehicle-mounted charger comprises a plurality of power selection ports and is used for receiving the power selection signals and adjusting charging power according to the power selection signals; the adapter plug is connected with the vehicle-mounted charger and is used for being plugged with the first plug or the second plug; the connector is electrically connected with a plurality of power selection ports of the vehicle-mounted charger; the first plug is inserted with the adapter plug and is used for connecting an external power supply matched with the first plug so as to transmit electric energy to the vehicle-mounted charger; the second plug is inserted with the adapter plug and is used for connecting an external power supply matched with the second plug so as to transmit electric energy to the vehicle-mounted charger; and the signal plug is electrically connected with the second plug and is used for being plugged in the connector assembly so as to enable the power selection port corresponding to the second plug to be conducted. Therefore, the charging device can be suitable for various external power supplies, and the charging safety and diversity of the overhead working truck are improved.

Description

Charging system for overhead working truck and overhead working truck

Technical Field

The utility model relates to the technical field of high-altitude operation vehicles, in particular to a charging system for a high-altitude operation vehicle and the high-altitude operation vehicle.

Background

With the gradual electromotion of the high-altitude operation vehicle, more and more electrically-driven high-altitude operation vehicles are available. In order to ensure the cruising ability and meet the requirement of a high-power working condition, the capacity of the power battery is continuously improved. Due to the fact that the aerial work application scenes are many, renting objects are wide, and charging of a charging pile is difficult to adopt. The vehicle-mounted charger has the advantages that the charging voltage is low, the power is high, the charging current is large, the matched charging plug is difficult to meet all charging scenes on the market, and the charging is difficult. The vehicle-mounted charger generally adopts single-phase charging, the voltage is 220V, a 32A plug is arranged, high-power charging can be achieved, and matched external power supplies are difficult to find in scenes such as markets, communities, schools and the like. If the plug of 16A is configured, low power charging is used, the charging time is too long, and if the charging power is not limited, the charging power is still 32A current, which easily causes the charging circuit to trip or even burn out. Therefore, the charging system of the aerial work platform in the prior art has limitations and low safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a charging system for an overhead working truck and the overhead working truck, which are used for solving the problems that the charging system for the overhead working in the prior art has limitation and low safety.

In order to achieve the above object, a first aspect of the present invention provides a charging system for an aerial work platform, comprising:

the vehicle-mounted charger comprises a plurality of power selection ports and is used for receiving the power selection signals and adjusting charging power according to the power selection signals;

the adapter plug is connected with the vehicle-mounted charger and is used for being plugged with the first plug or the second plug;

the connector is electrically connected with a plurality of power selection ports of the vehicle-mounted charger;

the first plug is inserted with the adapter plug and is used for connecting an external power supply matched with the first plug so as to transmit electric energy to the vehicle-mounted charger;

the second plug is inserted with the adapter plug and is used for connecting an external power supply matched with the second plug so as to transmit electric energy to the vehicle-mounted charger;

and the signal plug is electrically connected with the second plug and is used for being plugged in the connector assembly so as to enable the power selection port corresponding to the second plug to be conducted.

In the embodiment of the utility model, the charging power set by the vehicle-mounted charger is the charging power matched with the first plug.

In the embodiment of the utility model, the adapter plug is electrically connected with the vehicle-mounted charger through the ground wire, the live wire and the zero wire respectively.

In the embodiment of the utility model, the connector comprises a plurality of power selection jacks and a grounding jack, each power selection jack is electrically connected with one power selection port of the vehicle-mounted charger, and the grounding jack is grounded through a ground wire.

In an embodiment of the present invention, the signal plug includes a plurality of power selection plugs and a ground plug, and a power selection plug and a ground plug corresponding to the second plug among the plurality of power selection plugs are electrically connected by a wire.

In an embodiment of the present invention, the patch plug is a 32A plug.

In an embodiment of the utility model, the first plug is a 10A plug and the second plug is a 16A or 32A plug.

In the embodiment of the utility model, the vehicle-mounted charger comprises two power selection ports, wherein one power selection port corresponds to the charging power of a 16A plug, and the other power selection port corresponds to the charging power of a 32A plug.

In an embodiment of the utility model, the connector includes a 16A power selection jack, a 32A power selection jack, and a ground jack; the signal plug comprises a 16A power selection plug, a 32A power selection plug and a grounding plug;

in the case where the second plug is a 16A plug, the 16A power selection plug and the ground plug are connected by a wire;

in the case where the second plug is a 32A plug, the 32A power selection plug and the ground plug are connected by a wire.

In an embodiment of the present invention, further comprising:

and the battery is electrically connected with the vehicle-mounted charger and is charged by the vehicle-mounted charger.

According to a second aspect of the embodiments of the utility model, an aerial work platform is provided, which comprises the charging system for the aerial work platform.

Through the technical scheme, the adapter plug, the first plug, the second plug and the signal plug corresponding to the second plug are provided to adapt to various types of external power supplies, the charging requirements of the high-altitude operation platform in multiple scenes such as construction sites, markets and the like are met, the charging power of the vehicle-mounted charger is automatically matched with the second plug through the signal plug and the socket connector, tripping and even burning caused by overlarge power are avoided, and the safety and diversity of the charging system are improved.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a charging system for an aerial platform truck according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a charging system for an aerial lift truck according to an alternative embodiment of the present invention;

fig. 3 is a schematic structural diagram of a signal plug according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a signal plug corresponding to the 16A plug provided in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a signal plug corresponding to the 32A plug provided in the embodiment of the present invention.

Description of the reference numerals

1 vehicle charger 2 adapter plug

3 connector 4 first plug

5 second plug 6 signal plug

7 power supply 6116A power selection plug

6232A Power selection plug 63 ground plug

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a charging system for an aerial platform truck according to an embodiment of the present invention. As shown in fig. 1, the present invention provides a charging system for an aerial cage, which may include:

the vehicle-mounted charger 1 comprises a plurality of power selection ports and is used for receiving power selection signals and adjusting charging power according to the power selection signals;

the adapter plug 2 is connected with the vehicle-mounted charger 1 and is used for being plugged with a first plug 4 or a second plug 5;

the connector 3 is electrically connected with a plurality of power selection ports of the vehicle-mounted charger 1;

the first plug 4 is inserted into the adapter plug 2 and is used for connecting an external power supply matched with the first plug 4 to transmit electric energy to the vehicle-mounted charger 1;

the second plug 5 is inserted into the adapter plug 2 and is used for connecting an external power supply matched with the second plug 5 so as to transmit electric energy to the vehicle-mounted charger 1;

and the signal plug 6 is electrically connected with the second plug 5 and is used for being plugged on the connector 3 so as to conduct the power selection port corresponding to the second plug 5.

In an embodiment of the present invention, an aerial work vehicle refers to a special vehicle that transports workers and uses equipment to the site and performs aerial work. The self-walking overhead working truck is a vehicle which is more than 3 meters, is provided with a plurality of hydraulic oil cylinders by a hydraulic or electric system and can lift up and down to carry out operation. A manned overhead working truck adopting hydraulic transmission is modern advanced special mechanical equipment. With the gradual electromotion of the high-altitude operation vehicle, more and more high-altitude electrically-driven high-altitude operation vehicles come into the market, and the capacity of a power battery is continuously improved in order to meet the endurance. The power battery is generally charged by a vehicle-mounted Charger 1, and the vehicle-mounted Charger (OBC) 1 is a Charger fixedly installed inside the overhead working truck and has the capability of safely and automatically charging the power battery of the electric vehicle. The vehicle-mounted charger 1 may dynamically adjust a charging current or voltage parameter according to data provided by a Battery Management System (BMS), execute a corresponding action, and complete a charging process. The vehicle-mounted charger 1 has the advantages of small volume, good cooling and sealing performance, light weight and the like, is connected with household alternating current or a charging pile through a vehicle interface, converts an alternating current 220V power supply into direct current and charges a power battery. In the charging process, the vehicle-mounted charger and the battery management system are communicated and interacted, so that the safety of the charging process is ensured.

The vehicle-mounted charger 1 generally adopts single-phase charging, the single-phase charging voltage is 220V, a 32A plug is configured, high-power charging is met, and a matched socket is difficult to find in scenes such as markets, communities, schools and the like. If a 16A plug is used, low power charging can be satisfied, but the charging time is too long. Therefore, the embodiment of the present invention configures various charging plugs, a first plug 4 and a second plug 5; and meanwhile, the vehicle-mounted charger 1 can automatically adjust the charging power according to the selected charging plug.

Specifically, the charging system of the present invention includes a patch plug 2, a first plug 4, and a second plug 5, and the plugs may be plugs suitable for use in the industry or plugs suitable for use in other scenarios. The adapter plug 2 can be electrically connected with the vehicle-mounted charger 1 through a ground wire, a live wire and a zero line respectively. The adapter plug 2 is arranged on the surface of the overhead working truck and electrically connected with the vehicle-mounted charger 1, and the adapter plug 2 is used for being connected with the first plug 4 and the second plug 5 in an inserting mode so that the vehicle-mounted charger 1 can be conveniently conveyed with electric energy through an external power supply matched with the first plug 4 or the second plug 5. The charging power of the first plug 4 is matched with the set charging power of the vehicle-mounted charger 1. One side of the first plug 4 is matched with an external power supply, and the other side is matched with the adapter plug 2. Therefore, the first plug 4 is plugged with the adapter plug 2, and the electric energy provided by the corresponding external power supply is transmitted to the vehicle-mounted charger 1, so that the vehicle-mounted charger 1 charges the battery arranged in the aerial work platform.

In the embodiment of the present invention, the charging power set by the vehicle-mounted charger 1 is the charging power adapted to the first plug 4. Therefore, when the first plug 4 is plugged into the adaptor plug 2, the charging power of the vehicle-mounted charger 1 does not need to be adjusted, and the electric energy provided by the external power supply can be transmitted to the vehicle-mounted charger 1.

In an embodiment of the present invention, one side of the second plug 5 is configured to mate with an external power source and the other side is configured to mate with the patch plug 2. Therefore, only the second plug 5 is required to be inserted into the adapter plug 2, so that the adapter plug can adapt to different external power supplies, various plugs can adapt to most charging conditions, and the application range of the charging system is expanded. In one example, the default charging system is set to a charging power corresponding to a 10A plug. Patch plug 2 is 32A, first plug 4 may be 10A, and second plug 5 may be 16A or 32A. Although the second plug 5 is plugged in the conversion plug 2 to use different charging working conditions, the charging power is not limited, so that the circuit load is easily overlarge, the circuit is tripped or even burnt, and the safety hazard is large.

Therefore, in the embodiment of the present invention, the vehicle-mounted charger 1 includes a plurality of power selection ports for receiving the power selection signal and adjusting the charging power according to the power selection signal. The power selection signal can be manually selected by a worker while the plug is replaced, but the manual selection is easy to cause misoperation, and has certain risks. Therefore, the charging system according to the embodiment of the present invention is provided with the connector 3, the connector 3 is electrically connected to a plurality of power selection ports of the vehicle-mounted charger 1, and the second plug 5 is electrically connected to a corresponding signal plug 6. The signal plug 6 and the connector 3 can be plugged, and after the signal plug 6 and the connector 3 are plugged, the power selection port corresponding to the second plug 5 can be conducted. For example, the connector 3 may include power selection jacks and ground jacks of 16A and 32A, the power selection jacks being electrically connected to two power selection ports of the vehicle-mounted charger 1, respectively. The signal plugs 6 may include power selection plugs of 16A and 32A and ground plugs. When the second plug 5 is a 16A plug, the 16A power selection plug and the ground plug in the corresponding signal plug 6 are connected by a wire. Thus, the signal plug 6 is plugged in the connector 3 while the second plug 5 is plugged in the switching plug 2, at this time, the power selection plug 16A of the signal plug 6 is conducted with the ground plug, and the power selection jack 16A in the connector 3 is connected with the power selection port corresponding to the vehicle-mounted charger 1, so that the charging power of the vehicle-mounted charger 1 can be automatically converted into the charging power corresponding to the 16A plug. According to the embodiment of the utility model, the automatic selection of the charging power of the vehicle-mounted charger is realized through the signal plug, the condition of tripping or even burning caused by manual misoperation is reduced, and the safety of the charging system is improved.

The utility model provides the adapter plug, the first plug, the second plug and the signal plug corresponding to the second plug so as to adapt to various types of external power supplies, meet the charging requirements of an aerial work platform in a plurality of scenes such as construction sites, markets and the like, realize that the charging power of the vehicle-mounted charger is automatically matched with the second plug by plugging the signal plug into the connector, avoid tripping or even burning due to overlarge power, and improve the safety and diversity of a charging system.

As shown in fig. 1, in the embodiment of the present invention, the method further includes:

and the battery 7 is electrically connected with the vehicle-mounted charger 1, and the battery 7 is charged by the vehicle-mounted charger 1.

In the embodiment of the present invention, the charging system further includes a battery 7, where the battery 7 is a vehicle-mounted battery, and for an electric vehicle, the vehicle-mounted battery may be a storage battery, and the storage battery is suitable for a pure electric vehicle, and includes, but is not limited to, a lead-acid storage battery, a nickel-metal hydride battery, a sodium-sulfur battery, a secondary lithium battery, an air battery, a ternary lithium battery, and the like. The battery 7 is electrically connected with the vehicle-mounted charger 1, the vehicle-mounted charger 1 acquires electric energy of an external power supply through a plug to charge the battery 7, the vehicle-mounted charger 1 can dynamically adjust charging current and voltage parameters according to data provided by a battery management system, executes corresponding actions to complete a charging process, and has the capability of automatically and safely charging the battery 7.

In an embodiment of the present invention, the connector 3 may include a plurality of power selection jacks and a ground jack, each power selection jack is electrically connected to one power selection port of the vehicle-mounted charger 1, and the ground jack is grounded through a ground wire.

Specifically, the connector 3 includes a plurality of power selection jacks and a ground jack, the ground jack is grounded through a ground wire, and each power selection jack is connected with one power selection port of the vehicle-mounted charger 1 through a wire. Under the condition that no signal plug 6 is inserted into the connector 3, the power selection port of the vehicle-mounted charger 1 is not conducted with the grounding jack, and the charging power of the vehicle-mounted charger 1 at the moment is the default set charging power. In order to reduce the risk of charging, the set charging power of the embodiment of the present invention may be low power, for example, the charging power corresponding to the 10A plug, so as to improve the safety of the charging system.

In an embodiment of the present invention, the signal plug 6 may include a plurality of power selection plugs and a ground plug, and a power selection plug and a ground plug corresponding to the second plug 5 among the plurality of power selection plugs are electrically connected by a wire.

Specifically, the signal plug 6 is electrically connected to the second plug 5, and the worker can plug the signal plug 6 to the socket connector 3 while plugging the second plug 5 to the patch plug 2. The signal plug 6 may include a plurality of power selection plugs and a ground plug, each of which mates with a power selection jack of the socket connector 3. The signal plugs 6 corresponding to the second plugs 5 of different types are different, for example, the signal plug corresponding to the 16A plug is a signal plug in which a 16A power selection plug is conducted with a ground plug; the signal plug corresponding to the 32A plug is a signal plug in which the 32A power selection plug is conducted with the ground plug. Therefore, when the signal plug 6 is plugged in the connector 3, the power selection port matched with the charging power of the second plug 5 can be conducted with the ground end, so that the vehicle-mounted charger 1 can automatically select the charging power matched with the second plug 5.

Fig. 2 is a schematic structural diagram of a charging system for an aerial platform according to an alternative embodiment of the present invention. As shown in fig. 2, in an embodiment of the present invention, the patch plug is a 32A plug, and the first plug 4 may be a 10A plug; the second plug 5 may be a 16A or 32A plug; the onboard charger 1 may comprise two power selection ports P6 and P7, one power selection port P6 corresponding to the charging power of the 16A plug and the other power selection port P7 corresponding to the charging power of the 32A plug.

In the embodiment of the utility model, the charging system comprises a vehicle-mounted charger 1, a patch plug 2, a connector 3, a first plug 4, a second plug 5, a signal plug 6 and a battery 7. The battery 7 is electrically connected with the vehicle-mounted charger, the positive electrode of the battery 7 is connected with the positive electrode DC + of the vehicle-mounted charger 1, and the negative electrode of the battery 7 is connected with the negative electrode DC-of the vehicle-mounted charger 1. The vehicle-mounted charger 1 is electrically connected with the adapter plug 2 through a ground wire PE, a live wire L and a zero line N respectively. The vehicle-mounted charger 1 is provided with charging power selection ports P6 and P7, the default charging power of the charging system is set to be the charging power matched with a 10A plug, the charging power matched with a 16A plug is P6, and the charging power matched with a 32A plug is P7. Connector 3 is connected to power selection ports P6 and P7 by two wires, respectively, and is grounded via a ground line. The patchplug is a 32A plug, the first plug 4 is a 10A plug, and the second plug 5 is a 16A plug or a 32A plug. When the first plug 4 is plugged with the adapter plug 2, the set power of the vehicle-mounted charger 1 is matched with the charging power of the first plug 4, and a corresponding signal plug is not needed. When the second plug 5 is plugged with the adapter plug 2, the second plug 5 is connected with a corresponding signal plug 6.

In one example, in the case that the charging system needs to use a 16A plug, the 16A plug is plugged into the transfer plug, and simultaneously, a signal plug corresponding to the 16A plug is plugged into the plug 3, so that the P6 and the ground form a path, and the vehicle-mounted charger 1 automatically converts into the charging power corresponding to the 16A plug. In another example, in the case that the charging system needs to use a 32A plug (in this example, the 32A plug refers to the second plug 5), the 32A plug is plugged into the transfer plug, and at the same time, a signal plug corresponding to the 32A plug is plugged into the connector 3, so that the P7 and the ground form a path, and the vehicle-mounted charger 1 automatically converts into the charging power corresponding to the 32A plug. In addition, when the 10A plug is required to be used in the charging system, the 10A plug is plugged into the transfer plug, and the default charging power is set to the charging power corresponding to 10A, so that it is not necessary to plug a signal plug into the connector.

Fig. 3 is a schematic structural diagram of a signal plug according to an embodiment of the present invention. As shown in FIG. 3, in an embodiment of the present invention, the connector may include a 16A power selection jack, a 32A power selection jack, and a ground jack; the signal plugs may include a 16A power selection plug 61, a 32A power selection plug 62, and a ground plug 63.

Specifically, in the embodiment of the present invention, the socket connector includes three jacks, the signal plug includes three plugs, the jack of the socket connector is matched with the plug of the signal plug, the 16A power selection jack of the socket connector is the jack electrically connected with P6, and the 32A power selection jack is the jack electrically connected with P7. The 16A power selection plug 61 in the signal plug is the plug matching the 16A power selection jack, and the 32A power selection plug 52 is the plug matching the 32A power selection jack.

Fig. 4 is a schematic structural diagram of a signal plug corresponding to the 16A plug according to an embodiment of the present invention. As shown in fig. 4, in one example, the second plug is a 16A plug, and the 16A power selection plug 61 and the ground plug 63 are connected by a wire. In this way, when the 16A plug is plugged into the patch plug and the corresponding signal plug is plugged into the connector, at this time, the 16A power selection plug 61 and the grounding plug 63 of the signal plug are conducted, and the 16A power selection jack in the connector is connected with the power selection port P6 corresponding to the vehicle-mounted charger, so that a passage is formed between P6 and the ground. Therefore, the charging power of the vehicle-mounted charger can be automatically converted into the charging power corresponding to the 16A plug.

Fig. 5 is a schematic structural diagram of a signal plug corresponding to the 32A plug provided in the embodiment of the present invention. As shown in fig. 5, in one example, the second plug is a 32A plug, and the 32A power selection plug 62 and the ground plug 63 are connected by wires. In this way, when the 32A plug is plugged into the patch plug and the signal plug is plugged into the connector, at this time, the power selection plug 62 and the ground plug 63 of the 32A of the signal plug are conducted, and the 32A power selection jack in the connector is connected with the power selection port P7 corresponding to the vehicle-mounted charger, so that the P7 and the ground form a passage. Therefore, the charging power of the vehicle-mounted charger can be automatically converted into the charging power corresponding to the 32A plug.

According to the embodiment of the utility model, the automatic selection of the charging power of the vehicle-mounted charger is realized through the signal plug, the condition of tripping or even burning caused by manual misoperation is reduced, and the safety of the charging system is improved.

The utility model also provides an overhead working truck which comprises the charging system for the overhead working truck.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A charging system for an aerial lift truck, comprising:

the vehicle-mounted charger comprises a plurality of power selection ports and is used for receiving power selection signals and adjusting charging power according to the power selection signals;

the adapter plug is connected with the vehicle-mounted charger and is used for being plugged with a first plug or a second plug;

the first plug is inserted into the adapter plug and is used for connecting an external power supply matched with the first plug so as to transmit electric energy to the vehicle-mounted charger;

the second plug is inserted into the adapter plug and is used for connecting an external power supply matched with the second plug so as to transmit electric energy to the vehicle-mounted charger;

2. The charging system according to claim 1, wherein the set charging power of the vehicle-mounted charger is a charging power adapted to the first plug.

3. The charging system of claim 1, wherein the patch plug is electrically connected to the vehicle charger via a ground line, a live line, and a neutral line, respectively.

4. The charging system of claim 1, wherein the connector comprises a plurality of power selection jacks and a ground jack, each power selection jack is electrically connected to a power selection port of the vehicle-mounted charger, and the ground jack is grounded via a ground wire.

5. The charging system according to claim 4, wherein the signal plug includes a plurality of power selection plugs and a ground plug, and a power selection plug corresponding to the second plug and the ground plug among the plurality of power selection plugs are electrically connected by a wire.

6. The charging system of claim 1, wherein the patch plug is a 32A plug.

7. The charging system of claim 6, wherein the first plug is a 10A plug and the second plug is a 16A or 32A plug.

8. The charging system according to claim 7, wherein the vehicle-mounted charger comprises two power selection ports, one power selection port corresponds to the charging power of a 16A plug, and the other power selection port corresponds to the charging power of a 32A plug.

9. The charging system of claim 8, wherein the connectors comprise a 16A power selection jack, a 32A power selection jack, and a ground jack; the signal plug comprises a 16A power selection plug, a 32A power selection plug and a grounding plug;

10. The charging system of claim 1, further comprising:

11. An aerial lift truck comprising a charging system for an aerial lift truck as claimed in any one of claims 1 to 10.