Charger

Abstract

The invention discloses a charger. The charger comprises a shell; a plurality of power supply terminals supported by the housing and a plurality of power lines electrically connected to the plurality of power supply terminals, each power line being configured to supply power to one charging link; the charging circuit comprises a plurality of charging paths, and at least one power supply end can be connected to at least two charging paths; the controller is at least connected with the charging circuit and the plurality of power supply ends; the controller is configured to control the output power of each power supply end at least according to the electrical parameters of the power supply ends.

Description

Technical Field

[0001] The present application relates to a high-power power supply device, and more particularly to a charger. Background Art

[0002] With the development of battery technology, portable electric tools have gradually become the mainstream tools. Different tools may use different battery packs as power supplies. When there are multiple electric tools in a family or a team, there may be multiple identical or different battery packs. Currently, chargers, especially some high-power chargers that can directly charge vehicles such as ride-on lawn mowers, have only one output interface and can only charge the battery pack on one charging link, and cannot charge the battery packs of different tools simultaneously. Users need to manually switch the battery packs. Therefore, chargers that can charge the battery packs of multiple links simultaneously have become one of the mainstream products in the charger field.

[0003] This section provides background information related to the present application, which is not necessarily prior art. Summary of the Invention

[0004] An object of the present application is to solve or at least alleviate part or all of the above problems. To this end, an object of the present application is to provide a high-power multi-head charger that can charge multiple charging links and can distribute the charging power of different charging links.

[0005] To achieve the above object, the present application adopts the following technical solutions: A charger, comprising: a housing; a plurality of power terminals supported by the housing and a plurality of power lines electrically connected to the plurality of power terminals, each power line being configured to supply power to one charging link; a charging circuit including a plurality of charging paths, at least one of the power terminals being capable of accessing at least two charging paths; a controller connected to at least the charging circuit and the plurality of power terminals; the controller being configured to: control the output power of each power terminal at least according to the electrical parameters of the power terminal.

[0006] In one embodiment, the maximum output power of at least one of the power lines is less than or equal to 4000W.

[0007] In one embodiment, at least one of the power lines is fixedly connected to the power terminal.

[0008] In one embodiment, at least one of the power lines is pluggably connected to the power terminal.

[0009] In one embodiment, the port forms of the power output ends of at least two of the power lines are different.

[0010] In one embodiment, the port of the power output end of at least one power cord is a charging gun to adapt to the vehicle charging interface.

[0011] In one embodiment, the charging link includes one or more of a battery pack for power tools, a power supply device, and a vehicle.

[0012] In one embodiment, a switching element is connected in series on each charging path, and the controller is configured to control the switching state of the switching element according to the electrical parameters to change the output power of each charging path.

[0013] In one embodiment, the electrical parameters include at least one of voltage, current, or output power.

[0014] A charger includes: a housing; a plurality of power terminals supported by the housing and a plurality of power cords electrically connected to the plurality of power terminals, each power cord being arranged to supply power to a charging link; a charging circuit including a plurality of charging paths; and the maximum output power of the charger being less than or equal to 4000W.

[0015] A charger includes: a housing; a plurality of power terminals supported by the housing and a plurality of power cords electrically connected to the plurality of power terminals, each power cord being arranged to supply power to a charging link; the plurality of power terminals including at least a main power terminal; the maximum output power of the main power terminal being less than or equal to 4000W; a controller connected to at least the charging circuit and the plurality of power terminals; and the controller being configured to: control the output power of each power terminal at least according to the electrical parameters of the main power terminal.

[0016] In one embodiment, the controller is configured to control the output power of the main power terminal and control the other power terminals except the main power terminal to disconnect the power output when the electrical parameters of the main power terminal are within a first parameter range.

[0017] In one embodiment, the controller is configured to adjust the output power of the main power terminal and adjust the power output of the other power terminals according to the electrical parameters of the other power terminals except the main power terminal when the electrical parameters of the main power terminal are within a second parameter range.

[0018] In one embodiment, the controller is configured to disconnect the power output of the main power terminal when the electrical parameters of the main power terminal are within a third parameter range. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a charging system provided by an embodiment of the present application; Figure 2It is a schematic circuit diagram of a charging system provided by an embodiment of the present application; Figure 3 It is a schematic circuit structure diagram of a charger provided by an embodiment of the present application; Figure 4 It is a schematic circuit structure diagram of a charger provided by an embodiment of the present application. Detailed implementation manners

[0020] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0021] In the present application, the terms "comprise", "include", "have" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0022] In the present application, the term "and / or" is a relationship description of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "and / or" relationship between the associated objects before and after.

[0023] In the present application, the terms "connect", "combine", "couple", "mount" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, by way of example, direct connection means that two parts or components are connected together without the need for an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0024] In this application, those of ordinary skill in the art will understand that relative terms used in connection with quantities or conditions (e.g., "about", "approximately", "substantially", etc.) are intended to include the recited value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances resulting from manufacture, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose ranges defined by the absolute values of two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not employ relative terms should also be disclosed as specific values having tolerances. In addition, "substantially" when expressing a relative angular positional relationship (e.g., substantially parallel, substantially perpendicular) may refer to plus or minus a certain number of degrees (e.g., 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.

[0025] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0026] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as the upper side, the lower side, the left side, the right side, the front side, the rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side may include directly below, lower left, lower right, lower front, and lower rear, etc.

[0027] In this application, the terms "controller", "processor", "central processor", "CPU", "MCU" can be used interchangeably. When using the units "controller", "processor", "central processor", "CPU", or "MCU" to perform specific functions, unless otherwise specified, these functions can be performed by a single one of the above units or multiple ones of the above units.

[0028] In this application, for the terms "device", "module", or "unit" to achieve a specific function, they can be implemented in the form of hardware or software.

[0029] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or a similar electronic computing device (e.g., a controller, a processor, etc.).

[0030] Reference Figure 1 and Figure 2 The charging system 100 shown may include a charger 10 and multiple charging links 20. In this embodiment, the charging interface 11 of the charger 10 is set to access a charging power source, such as AC mains power, to obtain charging electrical energy. The charging interface 11 may be a power interface led out by a charging line 102 formed or installed on a housing 101. Multiple power terminals 12 are also formed, carried, or supported on the housing 101 of the charger 10, and the multiple power terminals 12 are connected to the multiple charging links 20 through multiple power lines 13. Among them, the power input end 131 of the power line 13 is connected to the power terminal 12 of the charger 10, and the power output port 132 of the power line 13 is connected to the charging link 20. In other embodiments, the charger 10 may further include a battery charging terminal that can directly access the battery pack without the power line 13. Among them, the positions of the multiple power terminals 12 on the housing 101 are as Figure 1 shown, and may be located at the lower end, side, back, or top of the housing 101, or may also be located near the leading-out position of the charging line 102. This application does not specifically limit the positions of the multiple power terminals 12 on the charger 10.

[0031] In one embodiment, the power input end 131 of the power line 13 can be fixedly installed to the power terminal 12 of the charger 10, that is, the power line 13 is fixed to the charger 10. In one embodiment, the power line 13 is pluggably installed to the charger 10, that is, the power input end 131 can be pluggably installed to the power terminal 12.

[0032] In this embodiment, the charging link 20 may include at least one of a battery pack 21 for a power tool, a power device 22, and a vehicle 23. That is to say, the charging link 20 may include a device to be charged, or may be a link in which multiple devices to be charged are cascaded.

[0033] In one embodiment, the power device 22 may be an adapter that can access at least one battery pack 21 and convert the electrical energy output by the charger 10 to charge the battery pack 21. The input end of the adapter is connected to the power output port 132, and the output end of the adapter is inserted into the battery pack for the power tool.

[0034] In one embodiment, the power device 22 may be a battery compartment that can accommodate at least one battery pack 21 and convert the electrical energy output by the charger 10 to charge the battery pack 21, or a movable trolley with a battery compartment. The input end of the battery compartment can be connected to the power output port 132, and the battery connection terminals in the battery compartment are plugged into the battery pack.

[0035] In one embodiment, the power supply device 22 can be a DC-DC device that can access different types of battery packs 21 and convert the electrical energy output by the charger 10 to charge at least some of the battery packs, or it can be a DC-DC device that uses the electrical energy output by the charger 10 to charge some of the battery packs and uses the charged battery packs to charge other uncharged battery packs, etc. In other embodiments, the charging link 20 can also include other types of rechargeable energy storage devices, or power tools or electric devices with built-in, installed, or plugged-in energy storage devices.

[0036] In this embodiment, the device to be charged in the charging link 20 can include an energy storage device, such as the battery pack 21. In one embodiment, the device for carrying or installing the device to be charged can also be referred to as the device to be charged, such as the power supply device 22 or the vehicle 23 described in this application, etc.

[0037] In one embodiment, the charging link 20 can also include a power tool. In one embodiment, the battery pack 21 in the charging link 20 or the battery packs installed on the power supply device 22 can supply power to various types of power tools. The power tools involved in this application can be handheld power tools, such as drills, pruning machines, sanders, etc. Or, the power tool can also be a bench-type tool, such as a table saw, miter saw, etc. Or, the power tool can also be a push-type power tool, such as a push-type lawn mower, push-type snow blower. Or, the power tool can also be a ride-on power tool, such as a ride-on lawn mower, ride-on vehicle, all-terrain vehicle, etc. Or, the power tool can also be a robotic tool, such as a lawn mowing robot, snow sweeping robot, etc. In some embodiments, the power tool can be a drill, electric lamp, electric vehicle, etc. In some embodiments, the power tool can also be a gardening tool, such as a pruning machine, blower, lawn mower, chain saw, etc. Or, the power tool can also be a decorating tool, such as a screwdriver, nail gun, circular saw, sander, etc. In some embodiments, the power tool can also be a vegetation care tool, such as a weed trimmer, lawn mower, pruning machine, chain saw, etc. Or, the power tool can also be a cleaning tool, such as a blower, snow blower, cleaning machine, etc. Or, the power tool can also be a drilling tool, such as a drill, screwdriver, wrench, electric hammer, etc. Or, the power tool can also be a sawing tool, such as a reciprocating saw, jigsaw, circular saw, etc. Or, the power tool can also be a bench-type tool, such as a table saw, miter saw, metal cutting machine, router, etc. Or, the power tool can also be a grinding tool, such as an angle grinder, sander, etc. Or, the power tool can also be other tools, such as a lamp, fan, etc. Of course, the load can also include other types of household electrical equipment.

[0038] In this embodiment, the vehicle 23 in the charging link 20 can be a riding lawn mower, a riding snow sweeper, an ATV, a UTV, other large tool equipment, or it can also be a push-type large garden tool, such as a push-type lawn mower, a snow sweeper, etc. When cascading multiple power supply devices 22 or cascading vehicles in the charging link 20, the connecting wire 30 can be used for connection. Among them, the connecting wire 30 can be the same as or different from the above-mentioned power cord 13. As Figure 1 In the charging system 100 shown, the charger 10 has three power supply terminals 12a to 12c, and can access three power cords 13a to 13c. Each power cord 13 can access a charging link 20. Among them, the charging link 20a accessed by the power cord 13a cascades multiple power supply devices 22, specifically including an adapter 221, a battery compartment 222, and a DC-DC device 223. A connecting wire 30 is electrically connected between each power supply device 22. The charging link 20b accessed by the power cord 13b cascades an adapter 221 and a vehicle 23, and the adapter 221 and the vehicle 23 are connected by a connecting wire 30. The charging link 20c accessed by the power cord 13c accesses the vehicle 23. It should be noted that the connecting wires 30 in different charging links 20 can be different, or the multiple connecting wires 30 in the same charging link 20 can also be different, or the connecting wires in different charging links 20 can be mixed. For example, one end of the connecting wire 30 can be connected to the adapter 221 and the other end can be connected to the battery compartment 222. When the output end of the adapter 221 in the charging link 20 is connected to the battery compartment 222, this connecting wire can be used.

[0039] In this embodiment, the port forms of the power output ports 132 of at least two power cords 13 are different. The port form can include the shape, size, etc. of the port. For example, some power output ports 132 are circular ports, some are square ports, or ports of other shapes. Different forms of ports can access different objects. In this application, the power cord 13 with a square port can directly access the vehicle 23 to charge the vehicle 23 or charge the battery pack in the vehicle 23. The power cord 13 with a circular port can access the adapter 221, the battery compartment 222, or the DC-DC device 223. In this embodiment, at least one power cord 13 has a square output port, and the square power output port 132 can also be called a charging gun that can be adapted to the charging port of the vehicle 23.

[0040] In one embodiment, the maximum output power of the charger 10 is less than or equal to 4000W, or less than or equal to 3500W, or less than or equal to 3200W, or less than or equal to 3000W, etc. In one embodiment, the maximum output power of at least one power cord 13, or rather, the maximum output power of at least one power supply terminal 12 is less than or equal to 3500W. The power supply terminal 12 with a maximum output power less than or equal to 3500W is defined as the main power supply terminal, and the charging link 20 connected to this power supply terminal is the main charging link 201. The main charging link 20 can be understood as a link that can obtain the maximum output power of the charger 10. Generally, a power supply device 22, a vehicle 23, or a battery pack 21 that requires a relatively large charging power is connected to the main charging link 201. In this application, the main charging link 20 is set to include at least the vehicle 23.

[0041] In one embodiment, it is possible to determine whether the charging link 20 accessed by the power output port 132 is the main charging link 201 according to the port form of the power output port 132. Exemplarily, the charging link 20 accessed by the square power output port 132 that can access the vehicle 23 is the main charging link 201.

[0042] In this embodiment, when the main charging link 201 accesses a device to be charged, such as accessing the vehicle 23, the charging circuit in the charger 10 preferentially supplies power to the main charging link 201 accessed by the main power supply terminal 12, and can charge the device to be charged on the main charging link 201, such as the vehicle 23, at the maximum charging power. When the main charging link 201 is charged to a certain extent, the charging circuit can supply power to other charging links 20 while reducing the charging power for the main charging link 201. When the main charging link 201 is basically fully charged, the power supply path for outputting electrical energy to the main charging link 201 can be disconnected, and the charging power can be allocated to other charging links 20 according to the electrical parameters on the other charging links 20. Thus, while ensuring that the charger 20 can exert its maximum output power, resource waste can also be avoided.

[0043] In one embodiment, taking the charger 10 with three power supply terminals 12 as an example, refer to Figure 3The charging circuit 400 of the charger 10 shown may include an AC-DC module 401, a first DC-DC module 402, a second DC-DC module 403, multiple charging paths L1 to L4 led out by the first DC-DC module 402 and the second DC-DC module 403, switching elements S1 - S4 respectively connected in series on the charging paths L1 - L4, and a controller 404 capable of at least controlling the switching states of the switching elements S1 - S4. The power supply terminals 12 include a first power supply terminal 121, a second power supply terminal 122, and a third power supply terminal 123. Each power supply terminal is at least connected to one charging path, so that the charging electric energy can pass through the power supply terminals 12 along the corresponding charging paths and charge the charging device in the charging link 20 electrically coupled to the power supply terminals 12 through the power line 13. In this embodiment, the charging powers output from the charging paths L1 and L2 are basically the same, and the charging powers output from the charging paths L3 and L4 are basically the same. In this embodiment, the controller 404 can control the operating states of the power elements in the AC-DC module 401, the first DC-DC module 402, and the second DC-DC module 403 to adjust the output powers of different charging paths. It can be understood that the controller 404 can also control whether each charging path can output charging power by controlling the switching states of the switching elements S1 - S4, or it can be understood that it can control the output power of the charging path by controlling the switching states of the switching elements S1 - S4. It should be noted that since the AC-DC module 401 can be a PFC power module, and the first DC-DC module 402 and the second DC-DC module 403 can be isolated power modules. In this application, the PFC module and the isolated power module can be implemented by borrowing mature circuit modules, and the process of the controller 404 changing the output power through the PFC module and / or the isolated power module is also a relatively common control method, which will not be elaborated here.

[0044] In this embodiment, the charging circuit 400 may further include a parameter detection module 405, which can at least detect the electrical parameters at the power supply terminals 12, for example, it may include current parameters, voltage parameters, power parameters, etc., and can transmit the detected electrical parameters to the controller 404, so that the controller 404 can at least control the output powers of each charging path according to the obtained electrical parameters. In one implementation, as Figure 3The charging circuit 400 shown may further include a plurality of parameter detection modules 405, and each parameter detection module 405 can correspondingly detect the electrical parameters at a power supply terminal 12. In one implementation, the number of parameter detection modules 405 is less than or equal to the number of power supply terminals 12, or at least two power supply terminals 12 can share one parameter detection module 405. In one implementation, at least one parameter detection module 405 is provided in the charging circuit 400 to detect the electrical parameters at all power supply terminals 12. It can be understood that the parameter detection module 405 can also obtain identification information that can characterize the identity of each power supply terminal 12, or can obtain identification information that can characterize the identity of the device to be charged in the charging link 20. Here, it is collectively referred to as identification information. The parameter detection module 405 can send the identification information to the controller 404 so that the controller 404 can confirm the identity of each power supply terminal 12 and the identity of the device to be charged in the charging link 20 connected to the power supply terminal 12. Among them, the identification information can include the identification information of whether the power supply terminal 12 is the main power supply terminal, or can include the type, model, etc. of the device to be charged in the charging link 20.

[0045] It can be understood that the electrical parameters at the power supply terminal 12 can characterize the state of the power supply device in the charging link 20 connected to the power supply terminal 12, such as whether it is charging and the magnitude of the current or voltage during charging. Thus, the controller 404 can control the on / off state of the switching element in the charging path according to the obtained electrical parameters and / or identification information to control the corresponding charging path to be turned on or off, and can control the power elements in the AC-DC module 401, the first DC-DC module 402, and the second DC-DC module 403 to change the charging power output by the turned-on charging path.

[0046] In this embodiment, at least one power supply terminal 12 can access at least two charging paths, and this power supply terminal can be defined as the main power supply terminal. Refer to Figure 3 For the charging circuit 400 shown, the second power supply terminal 122 can be connected to the second charging path L2 and the third charging path L3, the first power supply terminal 121 is electrically connected to the first charging path L1, and the third power supply terminal 123 is electrically connected to the fourth charging path L4. Thus, the second power supply terminal 122 can be used as the main power supply terminal, and the charging link connected to the second power supply terminal 122 can be used as the main charging link 201. Thus, the main charging link 20 charged through the main power supply terminal 122 can charge at the maximum output power of the charger 10.

[0047] It can be understood that the charger 10 can be provided with a plurality of main power supply terminals, and the device to be charged included in the main charging link connected to the main power supply terminal can be determined by the user himself / herself, and the present application does not make any limitation thereto.

[0048] Continue to refer to Figure 3, the controller 404 can control the output power of each power terminal 12 of the charger 10 according to the electrical parameters at the main power terminal 122. Exemplarily, the controller 404 can obtain the magnitude of the discharge current and / or voltage at the main power terminal 122, and then determine whether the battery pack in the vehicle 23 connected to the main power terminal 122 is fully charged or the charging process, i.e., the degree of charging or the current battery level, etc.

[0049] In this embodiment, the controller 404 can control the output power of the main power terminal 122 and control the power output of other power terminals 12 except the main power terminal to be disconnected when the electrical parameters of the main power terminal 122 are within the first parameter range. That is, when the main charging link 20 needs fast charging or high-power charging, priority is given to charging the main charging link 20 to exert the maximum output power of the charger 10. The controller 404 can also adjust the output power of the main power terminal 122 and adjust the power output of other power terminals according to the electrical parameters of the power terminals other than the main power terminal 122 when the electrical parameters of the main power terminal 122 are within the second parameter range. For example, the output power of the main power terminal 122 is reduced, and at least one of the other power terminals is changed from no power output to outputting charging power. The controller 404 can also disconnect the power output of the main power terminal 122 and can control more other power terminals to change from no power output to outputting charging power when the electrical parameters of the main power terminal 122 are within the third parameter range. Among them, the first parameter range, the second parameter range, and the third parameter range can be a parameter value or a parameter segment, and the parameters therein can be current parameters, battery level parameters, voltage parameters, or a combination of multiple parameters. In this embodiment, the electrical parameters at the power terminal 12 can characterize the charging state of the device to be charged in the charging link 20 connected to this power terminal, such as whether it is charging, or the degree of charging, such as the percentage of the charged battery level to the full battery level.

[0050] In one embodiment, the controller 404 may control the conduction of the power supply path connected to the main power supply terminal 122 when the electrical parameters at the main power supply terminal 122 are within the first parameter range, enabling the main power supply terminal 122 to continuously output charging power, and disconnect the power supply paths of other power supply terminals that are not connected to the main power supply terminal 122, so that other power supply terminals do not output power temporarily. For example, when the power of the device to be charged in the main charging link 20 is very low, the charger 10 may output the maximum charging power through the main power supply terminal 122 to supply power to the main charging link 20. When the electrical parameters at the main power supply terminal 122 are within the second parameter range, when the power of the device to be charged in the main charging link 20 is charged to a certain extent, the charger 10 may reduce the power output to the main charging link and open the power output of one or more other charging links. For example, when the power of the device to be charged in the main charging link 20 reaches any level between 50% and 90% of the full charge, the charging power of the main charging link 20 may be reduced. When the electrical parameters at the main power supply terminal 122 are within the third parameter range, the device to be charged in the main charging link 20 is basically fully charged, the power output of the charger 10 to the main charging link may be disconnected, and the output power of different power supply terminals may be allocated according to the parameters of other power supply terminals.

[0051] Since the electrical parameters at the main power supply terminal 122 may be at different orders of magnitude when different devices to be charged are charging in the main charging link 20, the present application does not specifically limit the range of the electrical parameters. The range in which the electrical parameters at the main power supply terminal 122 are located indicates that the power of the device to be charged in the main charging link 20 is very low and requires high-power charging in the first parameter range; it can characterize that the power of the device to be charged in the main charging link 20 can be quickly fully charged even without high-power charging in the second parameter range; and it can characterize that the power of the device to be charged in the main charging link 20 is basically fully charged and does not need to be charged anymore in the third parameter range.

[0052] In one embodiment, the controller 404 evaluates the charging status of the main charging link 20 based on the magnitude of the charging current at the power supply terminal 12. For example, when the voltage at the main power supply terminal 122 is high and the output charging current is greater than the first current threshold, the controller 404 determines that the main charging link 20 requires high-power charging. The controller 404 can control the main power supply terminal 122 to continuously output high-power supply electrical energy, while disconnecting the power output of other power supply terminals. When the charging current at the main power supply terminal 122 is greater than the second current threshold and less than or equal to the first current threshold, it can be determined that the charge level of the device to be charged in the main charging link 20 has reached a certain level. The power output at the main power supply terminal 122 can be adjusted, such as reducing the output power, and the charging power of the charger 10 to other charging links can be adjusted according to the electrical parameters at other power supply terminals 12. When the charging current at the main power supply terminal 122 is less than or equal to the second current threshold, it can be considered that the device to be charged in the main charging link 20 is basically fully charged, and the power output of the main power supply terminal 122 can be disconnected. For example, all power supply paths L2 and L3 connected to the main power supply terminal 122, that is, switches S2 and S3, are disconnected. In other embodiments, the controller 404 can also obtain the charge level parameters of the devices to be charged in the charging links 20 connected to each power supply terminal, and determine whether each charging link, especially the main charging link, is fully charged or the charging level based on the relationship between the charge level parameters and the charge level threshold. In this embodiment, the first current threshold is greater than the second current threshold, and the second current threshold is basically zero.

[0053] In some embodiments, the charger 10 may include at least two main power supply terminals (not shown). When at least two main power supply terminals are connected to the main charging link 20, the controller 404 can allocate the maximum charging power to at least two main charging links according to the electrical parameters at at least two main power supply terminals when the device to be charged in any one of the main charging links requires high-power charging, while disconnecting the charging power output of other power supply terminals. And after all the main charging links are basically fully charged, the power output of all the main charging links can be disconnected and then the charging power can be allocated to other charging links. Or after all the main charging links are charged to a certain extent, the charging power of all the main charging links can be reduced, and the charging power can be allocated to other charging links. It can be understood that when the number of main power supply terminals is different, the control method of the charger 10 for allocating charging power between the main charging link and other charging links may be different, but at least it can ensure high-power charging of the main charging link and at least not waste the output power of the charger to charge all the charging links.

[0054] Since the charger 10 can be connected to multiple charging links, users can use a long period of time to charge all or as many devices as possible in the home. For example, when charging the vehicle 23 at night, it can also ensure that the power supply device 22 connected to other charging links can be charged, greatly meeting the charging needs of users.

[0055] It should be noted that the charger 10 can be a type of household electrical device. Therefore, a high-power charger 10 is also limited by the current-carrying capacity of the power supply line of the user's home. To avoid exceeding the current-carrying capacity of the user's line when the charger operates at full power, which may damage the user's line and cause safety accidents. To solve this problem, the operating current of the charger 10 can be reduced below the current-carrying capacity of a general household line. This method can avoid damaging the user's line, but it will also cause the power of the charger 10 not to be fully utilized and unable to meet the needs of other professional users for high-power chargers.

[0056] To meet the current-carrying capacity of the household user's line and at the same time make full use of the charging power of the charger. The controller or control module in the charger can detect whether the charging power of the current charging link will cause excessive line heating. If so, it will reduce the charging power of the charging link that is charging at high power.

[0057] In one embodiment, at least one voltage-dividing resistor can be provided in the charging circuit 400. For example Figure 4 The shown voltage-dividing circuits R3 and R4, or R5 and R6. Among them, R1 and R2 represent the impedances on the virtual household user lines L and N. It can be understood that when the charger 10 operates, voltage drops will occur on R1 and R2, resulting in the AC voltage (L1 / N1) entering the charger being lower than the grid voltage (L / N). The charger 10 can detect the voltage of line L1 through the voltage division of the voltage-dividing resistors R3 and R4, and detect the voltage of line N1 through the voltage division of R5 and R6. If the voltage of the charging link when the charger 10 is connected during high-power charging can meet the requirements of high-power charging, the current in the charging path will not be too large, and thus the voltage of the voltage-dividing resistor will not be too large. On the contrary, if the voltage of the voltage-dividing resistor is large, the current in the charging path is too large and there is a risk of damaging the user's line.

[0058] In one implementation, the controller (not shown) in the charging circuit can detect the voltage values of AD_L and AD_N when the charger 10 is initially powered on without load; and detect the voltage values of AD_L and AD_N again when the charger 10 is charging at high power with full load; if the deviation between the voltage values detected twice is greater than a preset voltage difference, it is determined that the current charging link 20 for full-load charging is not suitable for high-power charging, otherwise it is considered suitable. When the controller determines that the charging link is not suitable for charging, it can control other modules in the charging circuit to adjust the charging power of the charging link, such as reducing the charging power, so as to avoid damaging the household line.

[0059] The basic principles, main features and advantages of the present application have been shown and described above. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A charger, comprising: case; a plurality of power terminals supported by the housing and a plurality of power lines electrically connected to the plurality of power terminals, each of the power lines being configured to supply power to a charging link; A charging circuit, comprising a plurality of charging paths, wherein at least one of the power supply terminals can be connected to at least two charging paths; A controller, connected at least to the charging circuit and the plurality of power supply terminals; The controller is configured to: The output power of each of the power supply terminals is controlled at least according to the electrical parameters of the power supply terminals.

2. The charger according to claim 1, characterized in that: The maximum output power of at least one of the power lines is less than or equal to 4000W.

3. The charger according to claim 1, characterized in that: At least one of the power lines is fixedly connected to the power terminal.

4. The charger according to claim 1, characterized in that: At least one of the power cords is pluggably connected to the power terminal.

5. The charger according to claim 1, characterized in that: The power output ends of at least two of the power lines have different port forms.

6. The charger according to claim 1, characterized in that: The power output port of at least one power line is a charging gun to adapt to the vehicle charging interface.

7. The charger according to claim 1, characterized in that: The charging link includes one or more of a battery pack for the power tool, a power supply device, and a vehicle.

8. The charger according to claim 1, characterized in that: A switch element is connected in series on each of the charging paths, and the controller is configured to control a switch state of the switch element according to the electrical parameter to change the output power of each of the charging paths.

9. The charger according to claim 1, characterized in that: The electrical parameter includes at least one of voltage, current or output power.

10. A charger, comprising: case; a plurality of power terminals supported by the housing and a plurality of power lines electrically connected to the plurality of power terminals, each of the power lines being configured to supply power to a charging link; A charging circuit, comprising a plurality of charging paths; The maximum output power of the charger is less than or equal to 4000W.

11. The charger according to claim 10, characterized in that: The maximum output power of at least one of the power lines is less than or equal to 4000W.

12. The charger according to claim 10, characterized in that: At least one of the power lines is fixedly connected to the power terminal.

13. The charger according to claim 10, characterized in that: At least one of the power cords is pluggably connected to the power terminal.

14. The charger according to claim 10, characterized in that: The power output ends of at least two of the power lines have different port forms.

15. The charger according to claim 10, characterized in that: The power output port of at least one power line is a charging gun to adapt to the vehicle charging interface.

16. The charger according to claim 10, characterized in that: The charging link includes one or more of a battery pack for the power tool, a power supply device, and a vehicle.

17. A charger, comprising: case; a plurality of power terminals supported by the housing and a plurality of power lines electrically connected to the plurality of power terminals, each of the power lines being configured to supply power to a charging link; The multiple power supply terminals at least include a main power supply terminal; The maximum output power of the main power supply end is less than or equal to 4000W; A controller, connected at least to the charging circuit and the plurality of power supply terminals; The controller is configured to: The output power of each of the power supply terminals is controlled at least according to the electrical parameters of the main power supply terminal.

18. The charger according to claim 17, characterized in that: The controller is configured to control the main power terminal to output power and control other power terminals except the main power terminal to disconnect power output when the electrical parameter of the main power terminal is within a first parameter range.

19. The charger according to claim 18, characterized in that: The controller is configured to adjust the output power of the main power supply terminal when the electrical parameters of the main power supply terminal are within a second parameter range and adjust the power output of other power supply terminals according to the electrical parameters of other power supply terminals except the main power supply terminal.

20. The charger according to claim 19, characterized in that: The controller is configured to disconnect the power output of the main power terminal when the electrical parameter of the main power terminal is within a third parameter range.

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